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WO2006107158A1 - Tire retread system - Google Patents

Tire retread system Download PDF

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Publication number
WO2006107158A1
WO2006107158A1 PCT/KR2006/001136 KR2006001136W WO2006107158A1 WO 2006107158 A1 WO2006107158 A1 WO 2006107158A1 KR 2006001136 W KR2006001136 W KR 2006001136W WO 2006107158 A1 WO2006107158 A1 WO 2006107158A1
Authority
WO
WIPO (PCT)
Prior art keywords
tire
box
arm
repair device
rotating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2006/001136
Other languages
French (fr)
Inventor
Su Jae Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2006107158A1 publication Critical patent/WO2006107158A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
    • B29D30/54—Retreading

Definitions

  • the present invention relates to a tire retread system, and more particularly, to a tire retread system, which can easily recycle waste tires by only one machine without needing a wide tire retreading factory and various facilities.
  • the present invention has been filed with Korean Intellectual Property Office (KIPO) on April 7, 2005 with Korean Patent Application No. 2005-28811 and patented on September 15, 2005 with Korean Patent No. 516783 through a preferential examination.
  • the tire is worn during the use since it is generally made of natural rubber and synthetic rubber. So, the tire must be periodically exchanged with a new one since driving force and braking force are reduced due to abrasion of the tire.
  • 'waste tire' means a tire which is worn near or above the abrasion limit and requires bonding of a new tread.
  • a process for recycling the waste tire includes the steps of: ® inspecting the waste tire, removing foreign matters stuck on the tire, and repairing inside damaged portions of the tire; ® cutting and removing the tread of the waste tire; ⁇ repairing damaged portions on the outer periphery of the tire; ® bonding a new tread on the outer periphery of the tire from which the old tread was removed; ⁇ surrounding the tire with an envelop tube; ⁇ holding the tire surrounded with the envelope tube in a high temperature and high pressure chamber, supplying compressed air into the envelop tube and the high temperature and high pressure chamber, and applying high temperature in such a way that the new tread can closely and perfecting contacting with the tire.
  • ® an inside repair device for inspecting the waste tire and repairing the inside damaged portions of the tire
  • ® a cutting device for cutting and removing the tread portion of the waste tire
  • ⁇ an outside repair device for repairing the damaged portions on the outer periphery of the tire
  • ® a bonding device for bonding the new tread on the waste tire
  • ⁇ a tube expanding device for spreading and expanding the envelope tube to surround the tire with the envelope tube
  • the inside repair device (10) for inspecting the inside of the collected waste tires and removing repaired marks existing on the inside of the waste tire and foreign matters, for example nails, stuck on the surface of the tire will be described.
  • the tire has an inner ring of a narrow width (L)
  • L narrow width
  • a device capable of spreading the inner ring of the tire in a width direction and allowing an operator to see the inside of the inner ring is needed.
  • Such an inside repair device is called a spreader.
  • a spreader body 12 includes: a spreader body 12; a power generator (not shown) mounted inside the spreader body 12; a pair of spreader support rollers 14 located at the lower end portion of the spreader body for supporting the tire in such a way as to rotate the tire loaded thereon; a pair of spreader arms 16, each having a cylindrical front end 18 being in contact with the inner periphery of the tire for spreading the tire in the width direction; and a spreader arm driving part (not shown) receiving driving power from the power generator for spreading the spreader arms 16.
  • the spreader arm driving part which receives driving power from the power generator and drives a pair of the spreader arms so as to spread the inner ring of the tire in the width direction, includes a motor and a group of gears or cylinders.
  • the waste tire from which foreign matters are removed is moved to the cutting device, and then, the tread portion is cut.
  • the cutting device is called a buffer.
  • the cutting device 20 shown in FIG. 2 includes: a buffer body 22 rotatably mounted on a rotating plate 23 and being movable in a straight line along grooves 21 formed on a lower board; an electric motor 24 mounted on the buffer body 22; a buffer cutting part 26 receiving driving force from the electric motor 24 to cut the tread portion of the tire while rotating a cutting blade; two support poles 28 standing on the lower board on which the buffer body 22 is mounted; a compressed air supply pipe 30 mounted on one of the support poles 28 for supplying compressed air to the inside of the tire; a buffer actuating part 32 mounted on the other support pole 28 for generating driving force to rotate the tire; and a tire mounting part 27 receiving compressed air from the compressed air supply pipe 30 to inject compressed air into the tire and rotating by receiving driving force from the buffer actuating part 32.
  • the tire is generally made of rubber material
  • the buffer cutting part 26 when the buffer cutting part 26 is in close contact with the tire for cutting, the tire is transformed by contact pressure, so that it is difficult to obtain uniform cut surface. So, it is necessary to prevent transformation of the tire by the internal pressure of the tire by filling the inside of the tire with air like the common tire condition.
  • the tire is held on the tire mounting part 27 in such a way as to compress and fix the tire, and compressed air is injected into the tire to expand the tire.
  • Such tire mounting part has been well known in the tire retreading field and the subject matter of the present invention is not the tire mounting part, and so, a detailed description of the tire mounting part will be omitted.
  • the tire includes a belt having a steel wire therein.
  • the belt is exposed to the air and gets rusty due to abrasion or damage of the tire. So, the operator has to find and grind the rusted belt from the surface of the tire from which the tread portion is completely removed by the cutting device 20, and fills the grinded portion with unvulcanized rubber and compresses them. It is important to prevent contamination of the cut surface of the tire from which the tread portion is removed. So, the inside repair device 10 shown in FIG. 1 cannot be used since the outer surface of the tire is in contact with the spreader support rollers 14 of the inside repair device 10.
  • the outside repair device 100 shown in FIG. 3 must be used, and is called a skiving device or a repair device.
  • the outside repair device 100 includes: a repair body 120; a power generator (not shown) mounted inside the repair body 120; a fixed repair arm 140 protruding from the repair body 120; a repair driving motor 160 mounted on the fixed repair arm 140 and rotating its shaft by receiving driving force from the power generator or a power source; a repair driving roller 180 connected to the shaft of the repair driving motor and rotating the tire in contact with the inner ring of the tire; a rotatable repair arm 190 rotatably mounted on the repair body 120; a rotating tool 197 for rotating the rotatable repair arm 190; and a repair slave roller 195 mounted on the rotatable repair arm for supporting the tire in contact with the inner ring of the tire.
  • the operator winds a bonding belt made of un vulcanized rubber on the surface of the repaired tire from which all partially damaged portions are removed, and then, bonds a new tread on the bonding belt.
  • the bonding device (called as a builder) shown in FIG. 4 is used.
  • the bonding device 40 includes: a builder body 42 having a motor or a pneumatic generator therein for rotating the tire; a tire mounting part 45 connected to the builder body for mounting the tire; a builder support board 44 for supporting the bonding belt and the tread; a tread compression roller 45 for compressing the tread onto the tire; and a compression arm 43 for closely contacting the tread compression roller 45 toward the tire.
  • a spring or an operating device for providing rotational force to the arm can closely contact the compression roller 45 toward the tire by the compression arm 43.
  • the bonding device 40 may further include a builder containing case 46 for containing the bonding belt or the tread therein, a control board 48 for controlling rotational speed for rotating the tire, or a cutting part 49 for cutting the bonding belt and the tread.
  • the tire mounting part 45 used in the bonding device 40 increases the diameter of the outer diameter portion thereof on which a rubber band is mounted in such a way as to contact the rubber band with the inner ring of the tire and supplies compressed air to the inside of the tire so as to expand the mounted tire.
  • the tire mounting part 45 of the bonding device 40 is equal to the tire mounting part 27 of the cutting device 20 shown in FIG. 2 in that it determines a mounting position of the tire, fixes the tire, and supplies compressed air into the tire.
  • Detailed description of the tire mounting part 45 will be omitted, since the structure and operation relation of the tire mounting part 45 shown in FIG. 4 have been widely known in the tire retread field.
  • the bonding belt made of unvulcanized rubber and a new tread 43 are wound and bonded on the tire mounted on the tire mounting part 45 in order.
  • the tire mounting part 45 on which the tire is mounted is slowly rotated by rotational force generated from the builder body 42, and then, the bonding belt and the tread 43 held on the upper portion of the builder support board 44 are pulled toward the outer periphery of the tire in order and wound on the tire.
  • the envelop tube is generally made of rubber material, has a form to surround the outer periphery of the tire, and serves to firmly compress the tread to the tire by elastic force of rubber and the injected air.
  • the envelope tube must be spread wider than the outer diameter of the tire, but it is impossible manually since the elastic force of the envelope tube is great. Therefore, the tube expanding device (called an enveloper) shown in FIG. 5 capable of radially expanding the envelope tube and mounting the tire in the expanded tube is needed.
  • the tube expanding device 60 includes: an enveloper body 62 having a motor or a pneumatic generator therein; enveloper arms 66 receiving driving force generated from the motor or the pneumatic generator and radially spreading the envelope tube; and enveloper rollers 68, each being rotatably mounted at an end of each enveloper arm 66 for holding the envelope tube.
  • the envelope tube surrounds the outer periphery of the tire by the tube expanding device 60, and then, the tire surrounded with the envelope tube is heated and compressed in a chamber 80 shown in FIG. 6.
  • the envelope tube 92 surrounding the tire as shown in FIG. 7 is connected with a compressed air supply part 84 mounted inside the chamber 80 via pipes.
  • a compressed air supply part 84 mounted inside the chamber 80 via pipes.
  • the tread 96 together with the bonding belt 94 made of unvulcanized rubber is in close contact with the tire by the elastic force of the envelope tube 92 and the air pressure.
  • a chamber door 86 is closed and compressed air is supplied into the chamber to keep a high pressure state, the envelope tube 92 more firmly contacts to the tire 90 and temperature is increased to keep the high temperature and high pressure state.
  • the chamber 80 includes a compressed air and high temperature generator 82 for supplying compressed air and increasing temperature.
  • the tread is more firmly in contact with the tire by the high pressure atmosphere of the chamber 80, elastic force of the envelope tube and pneumatic pressure, and the unvulcanized rubber layer is hardened by the high pressure state inside the chamber 80, so that the tread is permanently bonded to the tire, whereby the tire retread is finished.
  • the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a tire retread system, which can retread waste tires in a place where the waste tires are collected.
  • a tire retread system comprising: a container type box having a power supply line mounted along a side therein, a power connection part disposed on a side of the outer surface thereof and connected with an external power source for supplying power from the outside to the inside through the power supply line, and an entrance; and a tire retreading part mounted inside the container type box, the tire retreading part having at least one of an inside repair device, a first outside repair device, a second outside repair device, an inside and outside and repair device, a tube expanding device, and a cutting and bonding device,
  • the inside repair device includes: a inside repair device body combined with and mounted on the surface of the inner wall or an inner pole of the box; a pair of first support rollers connected to the inside repair device body for supporting the tire; a pair of first arms, each having a cylindrical front end contacting with the inner periphery of the mounted tire for spreading the tire in a width direction; and a first arm actuating part receiving power from the power supply line for actuating the first arms,
  • the first outside repair device includes: a second arm protruding from the surface of the inner wall or the inner pole of the box; a first driving motor mounted on the second arm and having a shaft rotated by power received from the power supply line to generate driving force for rotating the tire; a first driving roller connected to the shaft of the first driving motor and rotating the tire in contact with an inner ring of the tire; a third arm rotatably mounted on the surface of the inner wall or the inner pole of the box; a first rotating unit for rotating the third arm; and second support rollers mounted on the third arm for supporting the tire in contact with the inner ring of the tire,
  • the second outside repair device includes: an eighth arm rotatably mounted on the surface of the inner wall or the inner pole of the box; a sixth driving motor mounted on the eighth arm and having a shaft rotating by receiving power from the power supply line to generate driving force for rotating the tire; a third driving roller connected to the shaft of the sixth driving motor for rotating the tire in contact with the inner ring of the tire; a third rotating unit for rotating the eighth arm; and a fourth support roller mounted on the eighth arm in a state where it is spaced apart from the third driving roller, and supporting the tire in contact with the inner ring of the tire,
  • the inside and outside repair device includes: a fourth arm protruding from the surface of the inner wall or the inner pole of the box; a second driving motor mounted on the fourth arm and having a shaft rotating by receiving power from the power supply line to generate driving force for rotating the tire; a second driving roller connected to the shaft of the second driving motor for rotating the tire in contact with the inner ring of the tire; a fifth arm rotatably mounted on the inner pole of the box; a second rotating unit for rotating the fifth arm; a pair of sixth arms, each having a third support roller mounted on the front end thereof and fit to the inside of the tire for supporting the tire, hinged to the fifth arm to spreading the tire in the width direction; and a sixth arm actuating part positioned between the sixth arms for rotating the sixth arms,
  • the tube expanding device includes: a third driving motor mounted therein for generating driving force by receiving power from the power supply line; a tube expanding device body mounted on the inner pole of the box; a number of seventh arms for radially spreading an envelope tube by rotation of a number of rotary shafts receiving power generated from the third driving motor, and a number of wheels, each rotatably mounted on each seventh arm for supporting the envelope tube, and
  • the cutting and bonding device includes: a fourth driving motor mounted inside the inner pole of the box for rotating the tire by receiving power from the power supply line; a fourth driving motor transmission part mounted inside the inner pole of the box where the fourth driving motor is mounted, the fourth driving motor transmission part converting a speed of the fourth driving motor; a horizontally movable guide rail mounted in such a way as to connect the inner pole in which the fourth driving motor and the fourth driving motor transmission part are mounted with an adjacent pole together; a tire mounting part for contacting a rubber band with the inner ring of the tire, fixing the tire on the inner ring of the tire and supplying compressed air to the inside of the tire by increasing the diameter of the outer diameter portion where the rubber band is mounted; a tread support board mounted at a side of the tire mounting part for supporting a bonding belt and a tread, the tread support board being connected with the horizontally movable guide rail in such a way as to be moved horizontally; and a tread cutting part having a tread cutting blade and a fifth driving motor and mounted at
  • the inside repair device body is combined to the surface of the inner wall or the inner pole of the box in such a way that the inside repair device body is connected to the mounting bracket mounted on the surface of the inner wall or the inner pole of the box via two or more pins so that the inside repair device body is rotated on one pin and fixed to the inner wall or the inner pole of the box by the other pin.
  • the inside repair device body is fixed in an operation space of a vertically movable cylinder mounted on the surface of the inner wall of the box so that the inside repair device body is vertically movable by operation of the cylinder.
  • the first support roller may be rotated by a first support roller driving motor mounted separately.
  • the tube expanding device body may be connected to the surface of the inner wall or the inner pole of the box in such a way that the surface of the inner wall or the inner pole of the box becomes one side wall of the tube expanding device body.
  • the tube expanding device body is connected to the surface of the inner wall or the inner pole of the box by hinge portions, or by a connection structure, the connection structure including: a first guide mounting member attached on the surface of the inner wall or the inner pole of the box; a second guide mounting member spaced apart from the first guide mounting member; a guide member supported by the first and second guide mounting members and horizontally mounted between the first and second guide mounting members; a sliding member sliding along the guide member and mounted on the lower end of the tube expanding device body; and a conveying unit slidably moving the tube expanding device body along the guide member in a horizontal direction.
  • the driving motors, driving units, and rotating units are to provide a rotational movement or a rectilinear movement, and may be an electric or pneumatic motor or a cylinder, and may further include a deceleration device or a converter for converting the rectilinear movement or the rotational movement into a rotational movement or a rectilinear movement.
  • a rail is mounted on the inner ceiling of the box so as to easily hold and convey the tire on the ceiling.
  • the inside repair device, the first outside repair device, the second outside repair device, the inside and outside repair device, the tube expanding device, and the cutting and bonding device respectively have their own control boards, but in the case where two or more of the devices are mounted inside the box, the tire retreading system further includes an integrated control board for controlling the entire process of retreading the tire. At this time, each control board controls only matters related with operation of the corresponding device.
  • the tire retread system can be easily moved even though a tire retreading factory is moved to other place, since all devices necessary for retreading the tire are mounted inside the container type box without disassembling and reinstalling the tire retreading system.
  • adjacent car repairing companies may cooperate with one another to be equipped with the entire retreading system, or the car repairing company may partially buy some devices and partially lease the other devices.
  • the tire retread system can improve work environments by reducing noise since power used for each device mounted inside the box is supplied from the outside.
  • the tire retread system can retread the waste tire in a place where the waste tire is separated from a vehicle, the system can reduce time and money required for transporting waste tires to a retreading factory, allows car repair centers which has a small installation space to easily retread tires because the system does not need a site to store collected waste tires or a factor for installing retreading facilities and equipments, thereby easily retreading waste tires and reducing retreading costs.
  • the tire retread system according to the present invention can reduce an occupied space of each device since the wall surface of the container type box is used as a frame.
  • FIG. 1 is a view of a conventional inside repair device
  • FIG. 2 is a view of a conventional cutting device
  • FIG. 3 is a view of a conventional outside repair device
  • FIG. 4 is a view of a conventional bonding device
  • FIG. 5 is a view of a conventional tube expanding device
  • FIG. 6 is a view of a conventional chamber
  • FIG. 7 is a view showing a combined relation between an envelope tube and a tire
  • FIG. 8 is an arrangement view of a tire retread system according to a preferred embodiment of the present invention
  • FIG. 9 is a view of a tire retread system according to another preferred embodiment of the present invention
  • FIG. 10 is a view showing an installation state of an inside repair device according to the present invention
  • FIG. 11 is a view showing a folded state of the inside repair device when it is not used
  • FIG. 12 is a view showing another installation state of the inside repair device according to the present invention
  • FIG. 13 is a view showing an installation state of a first outside repair device according to the present invention
  • FIG. 14 is a view showing a structure and an installation state of an inside and outside repair device according to the present invention.
  • FIG. 15 is a view showing a mounted state of a tube expanding device according to the present invention.
  • FIG. 16 is a view showing another mounted state of the tube expanding device according to the present invention.
  • FIG. 17 is a view showing a further mounted state of the tube expanding device according to the present invention.
  • FIG. 18 is a view showing a structure and an installation state of a cutting and bonding device according to the present invention; and
  • FIG. 19 is a view showing a structure and an installation state of a second outside repair device according to the present invention. [77]
  • a tire retread system includes a container type box 200, and at least one of an inside repair device 300, a first outside repair device 400, an inside and outside repair device 500, a tube expanding 600, and a cutting and bonding device 700 mounted inside the container type box 200.
  • all the above devices together with a chamber 800 may be mounted inside the container type box 200 as shown in FIG. 8, but each of the above devices may be mounted inside the box 200 one by one as shown in FIG. 9.
  • car repairing companies may cooperate with one another to be equipped with the entire retreading system, partially buy some devices and partially lease the other devices so that the company may withdraw a bond when the rent is not paid.
  • the container type box 200 may be used by converting an existing container box, or manufactured separately.
  • the container type box 200 includes a power supply line (not shown) mounted along a side therein, a power connection part (not shown) disposed on a side of the outer surface thereof and connected with an external power source for supplying power from the outside to the inside through the power supply line, and an entrance 210 for passing an operator and articles therethrough.
  • the driving force used in the retreading system is electric power and pneumatic pressure. Electric power is supplied through the power supply line using the external power source, but pneumatic pressure is generated from an external pneumatic generator and supplied through the power supply line, or directly supplied from a pneumatic generator mounted in the retreading system. If electric power and pneumatic pressure are used together, it is preferable to form individual power supply lines.
  • the power supply line may be mounted inside the wall body of the container type box, or mounted along the surface of the inner wall, the floor or the ceiling. Connection of the power supply line to each device can be easily carried out by those skilled, and so a detailed description will be omitted.
  • the inside repair device 300 shown in FIG. 10 includes: an inside repair device body 310 combined with and mounted on the surface of the inner wall of the box 200; a pair of first support rollers 320 connected to the inside repair device body 310 for supporting the tire; a pair of first arms 340, each having a cylindrical front end 330 contacting with the inner periphery of the mounted tire for spreading the tire in a width direction; and a first arm actuating part 350 receiving driving force from the power supply line for actuating the first arms.
  • the inside repair device body 310 includes a protrusion 312 protruding in such a way as to be combined with the surface of the inner wall of the box 200; and a receiving portion 314 to which the protrusion 312, the first support rollers 320, the first arms 340 and the first arm actuating part 350 are combined.
  • the inside repair device body 310 can be mounted on the surface of the inner wall of the box 200 in such a way as to fix the protrusion of the inside repair device body 310 to the surface of the inner wall of the box 200 by welding.
  • a mounting bracket 360 mounted on the surface of the inner wall of the box 200 as shown in FIG. 10 may be connected to an end of the protrusion 360 of the inside repair device body via at least two pins in such a way that the inside repair device body is rotated on one of the pins 362 and fixed by the other pin 364.
  • FIG. 11 shows a state where the mounting bracket 360 is mounted on an inner pole of the box.
  • various repair devices are mounted on a wall body, they may be mounted on the surface of the inner wall of the box or on the inner pole of the box.
  • the mounting position is not restricted to this embodiment.
  • a vertically movable cylinder 370 may be mounted on the surface of the inner wall of the box 200 and the inside repair device body 310 is fixed in an operation space of the cylinder, so that the inside repair device body 310 can be moved vertically by operation of the cylinder 370.
  • another vertically movable cylinder may be further mounted on the surface of the inner wall or the inner pole of the box.
  • the protrusion of the inside repair device body may be connected with the mounting bracket via at least two pins in such a way that the inside repair device body is rotated on one of the pins and fixed by the other pin.
  • first support rollers 320 may be rotated by a support roller actuating motor separately mounted so as to rotate the tire.
  • the first outside repair device 400 shown in FIG. 13 includes: a second arm 410 protruding from the pole mounted inside the box 200; a first driving motor 420 mounted on the second arm 410 and having a shaft rotated by power received from the power supply line to generate driving force for rotating the tire; a first driving roller 430 connected to the shaft of the first driving motor 420 and rotating the tire in contact with the inner ring of the tire; a third arm 440 rotatably mounted on the inner pole of the box 200; a first rotating unit 450 for rotating the third arm 440; and second support rollers 460 mounted on the third arm 440 for supporting the tire in contact with the inner ring of the tire.
  • the present invention is characterized in that the inner pole and the power supply line are used inside the box. Since other operational relations of the first outside repair device are the same as the prior arts, their description will be omitted.
  • the second outside repair device 900 shown in FIG. 19 includes: an eighth arm 910 rotatably mounted on the inner pole of the box 200; a sixth driving motor 920 mounted on the eighth arm 910 and having a shaft rotating by receiving power from the power supply line to generate driving force for rotating the tire; a third driving roller 970 connected to the shaft of the sixth driving motor 920 for rotating the tire in contact with the inner ring of the tire; a third rotating unit 950 for rotating the eighth arm 910; and a fourth support roller 960 mounted on the eighth arm 910 in a state where it is spaced apart from the third driving roller 970, and supporting the tire in contact with the inner ring of the tire.
  • the inside and outside repair device 500 shown in FIG. 14 includes: a fourth arm
  • a second driving motor 520 mounted on the fourth arm 510 and having a shaft rotating by receiving power from the power supply line to generate driving force for rotating the tire; a second driving roller 530 connected to the shaft of the second driving motor 520 for rotating the tire in contact with the inner ring of the tire; a fifth arm 540 rotatably mounted on the inner pole of the box 200; a second rotating unit 550 for rotating the fifth arm 540; a pair of sixth amis 570, each having a third support roller 560 mounted on the front end thereof and fit to the inside of the tire for supporting the tire, hinged to the fifth arm 540 to spreading the tire in the width direction; and a sixth arm actuating part (not shown) positioned between the sixth arms 570 for rotating the sixth arms 570.
  • the inside and outside repair device 500 is a combination of the inside repair device and the outside repair device, and so, can rotate the tire by the second driving roller 530, spread the tire in the width direction by the sixth arms 570 to allow the operator to inspect and repair the inside of the tire, and prevent contamination of the outer periphery of the cut tire by preventing the tire from touching the floor.
  • the sixth arm actuating part for actuating the sixth arms may be a cylinder.
  • the tube expanding device 600 shown in FIG. 15 includes: a third driving motor
  • a tube expanding device body 610 mounted on the inner pole of the box; a number of seventh arms 630 for radially spreading an envelope tube by rotation of a number of rotary shafts 620 receiving power generated from the third driving motor, and a number of wheels 640, each rotatably mounted on each seventh arm 630 for supporting the envelope tube.
  • the tube expanding device body 610 may be combined to the surface of the inner wall of the box in such a way that the surface of the inner wall of the box 200 becomes a wall of the tube expanding device body 610 as shown in FIG. 17, or combined to the inner pole of the box 200 via hinge portions 650 as shown in FIG. 15. Since the tube expanding device body 610 is rotatably combined to the inner pole of the box via the hinge portions 650, the operator can rotate it for a convenient use during work, and rotate it toward the wall surface of the box 200 after work to effectively utilize a space.
  • the tube expanding device may include: a first guide mounting member 660 attached on the surface of the inner wall or the inner pole of the box; a second guide mounting member 662 spaced apart from the first guide mounting member 660; a guide member 664 supported by the first and second guide mounting members 660 and 662 and horizontally mounted between the first and second guide mounting members 660 and 662; a sliding member 666 sliding along the guide member 664 and mounted on the lower end of the tube expanding device body 610; and a conveying unit 664 slidably moving the tube expanding device body 610 in a horizontal direction along the guide member 664.
  • a cylinder for the conveying unit 664, a cylinder, a motor, or a power transmitting unit (chain, wire, or gear) may be used.
  • the cutting and bonding device 700 shown in FIG. 18 includes: a fourth driving motor (not shown) mounted inside the inner pole 710 of the box for rotating the tire by receiving power from the power supply line; a fourth driving motor transmission part (not shown) mounted inside the pole 710 where the fourth driving motor is mounted, and converting a speed of the fourth driving motor; a horizontally movable guide rail 732 mounted in such a way as to connect the pole 710 in which the fourth driving motor and the fourth driving motor transmission part are mounted with an adjacent pole 711 together; a tire mounting part 720 for contacting a rubber band with the inner ring of the tire, fixing the tire on the inner ring of the tire and supplying compressed air to the inside of the tire by increasing the diameter of the outer diameter portion where the rubber band is mounted; a tread support board 730 mounted at a side of the tire mounting part 720 for supporting a bonding belt and a tread, the tread support board 730 being connected with the horizontally movable guide rail 732 in such a way as to be moved horizontally
  • the cutting and bonding device 700 may further include a chip collecting and discharging part sucking rubber chips of the tread cut by the cutting blade 742 of the tread cutting part 740 and discharging them to the outside of the box.
  • the cutting and bonding device 700 is characterized in that the tire mounting parts and the tire mounting part actuators of the prior art cutting device and bonding device are united into one.
  • the tire mounting part is rotated at a rapid speed to cut the tread of the tire.
  • the cutting and bonding device 700 further includes a fourth driving motor transmission part.
  • the fourth driving motor transmission part may be a gear or a belt, or an inverter in the case of an electric motor.
  • the tread support board 730 may further include a compression roller 734 for compressing the tread and the bonding belt to the tire, and a ninth arm for closely contacting the compression roller 734 to the tire.
  • the ninth arm can be actuated by any actuating unit which can rotate the arm.
  • the tire retreading system according to the present invention is usable in various fields related with a waste tire recycling industry.

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Abstract

Disclosed therein is a tire retread system, which can easily recycle waste tires by only one machine without needing a wide tire retreading factory and various facilities. The tire retread system includes: a container type box having a power supply line mounted along a side therein, a power connection part disposed on a side of the outer surface thereof and connected with an external power source for supplying power from the outside to the inside through the power supply line, and an entrance; and a tire retreading part mounted inside the container type box, the tire retreading part having at least one of an inside repair device, a first outside repair device, a second outside repair device, an inside and outside repair device, a tube expanding device, and a cutting and bonding device.

Description

Description TIRE RETREAD SYSTEM
Technical Field
[1] The present invention relates to a tire retread system, and more particularly, to a tire retread system, which can easily recycle waste tires by only one machine without needing a wide tire retreading factory and various facilities. The present invention has been filed with Korean Intellectual Property Office (KIPO) on April 7, 2005 with Korean Patent Application No. 2005-28811 and patented on September 15, 2005 with Korean Patent No. 516783 through a preferential examination.
[2]
Background Art
[3] Since the advent of vehicles as main transportation means, a tire has occupied its position as an important part necessary for supporting weight of the vehicle, transmitting driving force and braking force, and relieving impact from the road.
[4] However, the tire is worn during the use since it is generally made of natural rubber and synthetic rubber. So, the tire must be periodically exchanged with a new one since driving force and braking force are reduced due to abrasion of the tire.
[5] When the tire which reaches the abrasion limit is treated, since it is difficult to decompose rubber which is the main ingredient of the tire, after the tire is cut finely and a wire belt embedded in the tire is removed, rubber is recycled. Meanwhile, recently, people are very concerned about to recycle worn tires through a retreading method of cutting and removing the tread of the worn tire and bonding a new tread. Furthermore, since all parts of the world are very concerned about environmental pollution problems, they unsparingly support industries that do not burn up but recycle waste tires.
[6] In the present invention, 'waste tire' means a tire which is worn near or above the abrasion limit and requires bonding of a new tread.
[7] A process for recycling the waste tire includes the steps of: ® inspecting the waste tire, removing foreign matters stuck on the tire, and repairing inside damaged portions of the tire; ® cutting and removing the tread of the waste tire; © repairing damaged portions on the outer periphery of the tire; ® bonding a new tread on the outer periphery of the tire from which the old tread was removed; © surrounding the tire with an envelop tube; © holding the tire surrounded with the envelope tube in a high temperature and high pressure chamber, supplying compressed air into the envelop tube and the high temperature and high pressure chamber, and applying high temperature in such a way that the new tread can closely and perfecting contacting with the tire.
[8] For the above process, various devices are needed, namely, ® an inside repair device for inspecting the waste tire and repairing the inside damaged portions of the tire; ® a cutting device for cutting and removing the tread portion of the waste tire; © an outside repair device for repairing the damaged portions on the outer periphery of the tire; ® a bonding device for bonding the new tread on the waste tire; © a tube expanding device for spreading and expanding the envelope tube to surround the tire with the envelope tube; and © a chamber for hardening the tire at high temperature and high pressure.
[9] Hereinafter, structures and using methods of the above devices will be described.
[10] First, the inside repair device (10) for inspecting the inside of the collected waste tires and removing repaired marks existing on the inside of the waste tire and foreign matters, for example nails, stuck on the surface of the tire will be described. As shown in FIG. 7, since the tire has an inner ring of a narrow width (L), it is difficult to observe and remove foreign matters stuck inside the inner ring. So, a device capable of spreading the inner ring of the tire in a width direction and allowing an operator to see the inside of the inner ring is needed. Such an inside repair device is called a spreader. The inside repair device 10 shown in FIG. 1 includes: a spreader body 12; a power generator (not shown) mounted inside the spreader body 12; a pair of spreader support rollers 14 located at the lower end portion of the spreader body for supporting the tire in such a way as to rotate the tire loaded thereon; a pair of spreader arms 16, each having a cylindrical front end 18 being in contact with the inner periphery of the tire for spreading the tire in the width direction; and a spreader arm driving part (not shown) receiving driving power from the power generator for spreading the spreader arms 16.
[11] For the power generator for the spreader, a motor or a pneumatic generator mounted inside the spreader body is generally used. The spreader arm driving part, which receives driving power from the power generator and drives a pair of the spreader arms so as to spread the inner ring of the tire in the width direction, includes a motor and a group of gears or cylinders.
[12] As shown in FIG. 1, after the tire is held on the spreader support rollers 14, when the cylindrical front end 18 of the spreader arm 16 is inserted into the inner ring of the tire and the inside repair device is operated by a control board 19, the spreader arms 16 are spread, so that the inner ring of the tire is also spread. After the operator finds and removes foreign matters stuck on the inner and outer peripheries of the tire while rotating the tire automatically or manually, the operator grinds the inner periphery damaged by the foreign matters, and then, injects unvulcanized rubber to the grinded portion to fill it with unvulcanized rubber. [13] To automatically rotate the tire, the spreader support rollers 14 receive driving power to rotate.
[14] The waste tire from which foreign matters are removed is moved to the cutting device, and then, the tread portion is cut. The cutting device is called a buffer.
[15] The cutting device 20 shown in FIG. 2 includes: a buffer body 22 rotatably mounted on a rotating plate 23 and being movable in a straight line along grooves 21 formed on a lower board; an electric motor 24 mounted on the buffer body 22; a buffer cutting part 26 receiving driving force from the electric motor 24 to cut the tread portion of the tire while rotating a cutting blade; two support poles 28 standing on the lower board on which the buffer body 22 is mounted; a compressed air supply pipe 30 mounted on one of the support poles 28 for supplying compressed air to the inside of the tire; a buffer actuating part 32 mounted on the other support pole 28 for generating driving force to rotate the tire; and a tire mounting part 27 receiving compressed air from the compressed air supply pipe 30 to inject compressed air into the tire and rotating by receiving driving force from the buffer actuating part 32.
[16] Since the tire is generally made of rubber material, when the buffer cutting part 26 is in close contact with the tire for cutting, the tire is transformed by contact pressure, so that it is difficult to obtain uniform cut surface. So, it is necessary to prevent transformation of the tire by the internal pressure of the tire by filling the inside of the tire with air like the common tire condition. For this, the tire is held on the tire mounting part 27 in such a way as to compress and fix the tire, and compressed air is injected into the tire to expand the tire. Such tire mounting part has been well known in the tire retreading field and the subject matter of the present invention is not the tire mounting part, and so, a detailed description of the tire mounting part will be omitted.
[17] When the tire mounted on the tire mounting part 27 is rotated by the buffer actuating part 32 and the cutting blade of the buffer cutting part 26 is rotated in the opposite direction of the rotating direction of the tire, the tread portion of the tire is cut. The cut depth and width are adjustable when the buffer cutting part 26 is moved in all directions by the grooves 21 and the rotating plate 23 of the buffer body 22.
[18] In general, the tire includes a belt having a steel wire therein. However, the belt is exposed to the air and gets rusty due to abrasion or damage of the tire. So, the operator has to find and grind the rusted belt from the surface of the tire from which the tread portion is completely removed by the cutting device 20, and fills the grinded portion with unvulcanized rubber and compresses them. It is important to prevent contamination of the cut surface of the tire from which the tread portion is removed. So, the inside repair device 10 shown in FIG. 1 cannot be used since the outer surface of the tire is in contact with the spreader support rollers 14 of the inside repair device 10.
[19] Therefore, the outside repair device 100 shown in FIG. 3 must be used, and is called a skiving device or a repair device. The outside repair device 100 includes: a repair body 120; a power generator (not shown) mounted inside the repair body 120; a fixed repair arm 140 protruding from the repair body 120; a repair driving motor 160 mounted on the fixed repair arm 140 and rotating its shaft by receiving driving force from the power generator or a power source; a repair driving roller 180 connected to the shaft of the repair driving motor and rotating the tire in contact with the inner ring of the tire; a rotatable repair arm 190 rotatably mounted on the repair body 120; a rotating tool 197 for rotating the rotatable repair arm 190; and a repair slave roller 195 mounted on the rotatable repair arm for supporting the tire in contact with the inner ring of the tire.
[20] The tire having the inner ring supported by the repair driving roller 180 and the repair slave roller 195 of the repair device 100 in a contact state is rotated by rotation of the repair driving roller 180. So, the operator finds damaged portion while rotating the tire, and then, repairs the damaged portion after stopping the rotation of the tire.
[21] The operator winds a bonding belt made of un vulcanized rubber on the surface of the repaired tire from which all partially damaged portions are removed, and then, bonds a new tread on the bonding belt. For this, the bonding device (called as a builder) shown in FIG. 4 is used.
[22] The bonding device 40 includes: a builder body 42 having a motor or a pneumatic generator therein for rotating the tire; a tire mounting part 45 connected to the builder body for mounting the tire; a builder support board 44 for supporting the bonding belt and the tread; a tread compression roller 45 for compressing the tread onto the tire; and a compression arm 43 for closely contacting the tread compression roller 45 toward the tire. A spring or an operating device for providing rotational force to the arm can closely contact the compression roller 45 toward the tire by the compression arm 43. The bonding device 40 may further include a builder containing case 46 for containing the bonding belt or the tread therein, a control board 48 for controlling rotational speed for rotating the tire, or a cutting part 49 for cutting the bonding belt and the tread.
[23] The tire mounting part 45 used in the bonding device 40 increases the diameter of the outer diameter portion thereof on which a rubber band is mounted in such a way as to contact the rubber band with the inner ring of the tire and supplies compressed air to the inside of the tire so as to expand the mounted tire. The tire mounting part 45 of the bonding device 40 is equal to the tire mounting part 27 of the cutting device 20 shown in FIG. 2 in that it determines a mounting position of the tire, fixes the tire, and supplies compressed air into the tire. Detailed description of the tire mounting part 45 will be omitted, since the structure and operation relation of the tire mounting part 45 shown in FIG. 4 have been widely known in the tire retread field.
[24] The bonding belt made of unvulcanized rubber and a new tread 43 are wound and bonded on the tire mounted on the tire mounting part 45 in order. For this, the tire mounting part 45 on which the tire is mounted is slowly rotated by rotational force generated from the builder body 42, and then, the bonding belt and the tread 43 held on the upper portion of the builder support board 44 are pulled toward the outer periphery of the tire in order and wound on the tire.
[25] The tire to which the bonding belt made of un vulcanized rubber is inserted between the new treads goes through a process of surrounding the tire with the envelope tube, injecting air into the envelope tube, and firmly bonding the tread to the tire.
[26] The envelop tube is generally made of rubber material, has a form to surround the outer periphery of the tire, and serves to firmly compress the tread to the tire by elastic force of rubber and the injected air. However, to surround the envelope tube made of rubber and having elastic force on the tire, the envelope tube must be spread wider than the outer diameter of the tire, but it is impossible manually since the elastic force of the envelope tube is great. Therefore, the tube expanding device (called an enveloper) shown in FIG. 5 capable of radially expanding the envelope tube and mounting the tire in the expanded tube is needed.
[27] The tube expanding device 60 includes: an enveloper body 62 having a motor or a pneumatic generator therein; enveloper arms 66 receiving driving force generated from the motor or the pneumatic generator and radially spreading the envelope tube; and enveloper rollers 68, each being rotatably mounted at an end of each enveloper arm 66 for holding the envelope tube.
[28] The envelope tube surrounds the outer periphery of the tire by the tube expanding device 60, and then, the tire surrounded with the envelope tube is heated and compressed in a chamber 80 shown in FIG. 6.
[29] The envelope tube 92 surrounding the tire as shown in FIG. 7 is connected with a compressed air supply part 84 mounted inside the chamber 80 via pipes. When air is injected to the inside of the tube, the tread 96 together with the bonding belt 94 made of unvulcanized rubber is in close contact with the tire by the elastic force of the envelope tube 92 and the air pressure. Furthermore, when the tire is located inside the chamber 80, a chamber door 86 is closed and compressed air is supplied into the chamber to keep a high pressure state, the envelope tube 92 more firmly contacts to the tire 90 and temperature is increased to keep the high temperature and high pressure state. Moreover, the chamber 80 includes a compressed air and high temperature generator 82 for supplying compressed air and increasing temperature. The tread is more firmly in contact with the tire by the high pressure atmosphere of the chamber 80, elastic force of the envelope tube and pneumatic pressure, and the unvulcanized rubber layer is hardened by the high pressure state inside the chamber 80, so that the tread is permanently bonded to the tire, whereby the tire retread is finished. [30] As described above, to retread the waste tire through the above machine and process, after waste tires separated from vehicles must be collected from a car repair center or a tire shop where the tires are exchanged, the waste tires are delivered to a retreading factory and go through the above retreading process, and then the retreaded tires are carried and sold to the tire shop or the car repair center. Therefore, a great deal of expenses and time are required for transport, and a waste tire retreading system of a single machine unit used in the retreading factory is very expensive. In addition, to dispose all of the collected waste tires, it is necessary to construct a large scale factory. However, it is very difficult to secure a place to construct the large scale factory due to civil appeals of residents who are opposed to collect and load waste tires. Moreover, even when the factory is moved due to civil appeals, it is very complicated to move and reinstall the retreading system after disassembling it.
[31]
Disclosure of Invention Technical Problem
[32] Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a tire retread system, which can retread waste tires in a place where the waste tires are collected.
[33] It is another object of the present invention to provide a tire retread system, which is inexpensive, easy in movement and installation since it is formed in a box shape, and installed in a small place since it does not need a large scale site for a factory.
[34] It is a further object of the present invention to provide a tire retread system, which can save transport expenses and time for collecting and retreading waste tires and selling the retreaded tires.
[35]
Technical Solution
[36] To accomplish the above object, according to the present invention, there is provided a tire retread system comprising: a container type box having a power supply line mounted along a side therein, a power connection part disposed on a side of the outer surface thereof and connected with an external power source for supplying power from the outside to the inside through the power supply line, and an entrance; and a tire retreading part mounted inside the container type box, the tire retreading part having at least one of an inside repair device, a first outside repair device, a second outside repair device, an inside and outside and repair device, a tube expanding device, and a cutting and bonding device,
[37] wherein the inside repair device includes: a inside repair device body combined with and mounted on the surface of the inner wall or an inner pole of the box; a pair of first support rollers connected to the inside repair device body for supporting the tire; a pair of first arms, each having a cylindrical front end contacting with the inner periphery of the mounted tire for spreading the tire in a width direction; and a first arm actuating part receiving power from the power supply line for actuating the first arms,
[38] wherein the first outside repair device includes: a second arm protruding from the surface of the inner wall or the inner pole of the box; a first driving motor mounted on the second arm and having a shaft rotated by power received from the power supply line to generate driving force for rotating the tire; a first driving roller connected to the shaft of the first driving motor and rotating the tire in contact with an inner ring of the tire; a third arm rotatably mounted on the surface of the inner wall or the inner pole of the box; a first rotating unit for rotating the third arm; and second support rollers mounted on the third arm for supporting the tire in contact with the inner ring of the tire,
[39] wherein the second outside repair device includes: an eighth arm rotatably mounted on the surface of the inner wall or the inner pole of the box; a sixth driving motor mounted on the eighth arm and having a shaft rotating by receiving power from the power supply line to generate driving force for rotating the tire; a third driving roller connected to the shaft of the sixth driving motor for rotating the tire in contact with the inner ring of the tire; a third rotating unit for rotating the eighth arm; and a fourth support roller mounted on the eighth arm in a state where it is spaced apart from the third driving roller, and supporting the tire in contact with the inner ring of the tire,
[40] wherein the inside and outside repair device includes: a fourth arm protruding from the surface of the inner wall or the inner pole of the box; a second driving motor mounted on the fourth arm and having a shaft rotating by receiving power from the power supply line to generate driving force for rotating the tire; a second driving roller connected to the shaft of the second driving motor for rotating the tire in contact with the inner ring of the tire; a fifth arm rotatably mounted on the inner pole of the box; a second rotating unit for rotating the fifth arm; a pair of sixth arms, each having a third support roller mounted on the front end thereof and fit to the inside of the tire for supporting the tire, hinged to the fifth arm to spreading the tire in the width direction; and a sixth arm actuating part positioned between the sixth arms for rotating the sixth arms,
[41] wherein the tube expanding device includes: a third driving motor mounted therein for generating driving force by receiving power from the power supply line; a tube expanding device body mounted on the inner pole of the box; a number of seventh arms for radially spreading an envelope tube by rotation of a number of rotary shafts receiving power generated from the third driving motor, and a number of wheels, each rotatably mounted on each seventh arm for supporting the envelope tube, and
[42] wherein the cutting and bonding device includes: a fourth driving motor mounted inside the inner pole of the box for rotating the tire by receiving power from the power supply line; a fourth driving motor transmission part mounted inside the inner pole of the box where the fourth driving motor is mounted, the fourth driving motor transmission part converting a speed of the fourth driving motor; a horizontally movable guide rail mounted in such a way as to connect the inner pole in which the fourth driving motor and the fourth driving motor transmission part are mounted with an adjacent pole together; a tire mounting part for contacting a rubber band with the inner ring of the tire, fixing the tire on the inner ring of the tire and supplying compressed air to the inside of the tire by increasing the diameter of the outer diameter portion where the rubber band is mounted; a tread support board mounted at a side of the tire mounting part for supporting a bonding belt and a tread, the tread support board being connected with the horizontally movable guide rail in such a way as to be moved horizontally; and a tread cutting part having a tread cutting blade and a fifth driving motor and mounted at the other side of the tire mounting part in such a way as to perform rectilinear movement and rotational movement.
[43] The inside repair device body is combined to the surface of the inner wall or the inner pole of the box in such a way that the inside repair device body is connected to the mounting bracket mounted on the surface of the inner wall or the inner pole of the box via two or more pins so that the inside repair device body is rotated on one pin and fixed to the inner wall or the inner pole of the box by the other pin.
[44] Alternatively, the inside repair device body is fixed in an operation space of a vertically movable cylinder mounted on the surface of the inner wall of the box so that the inside repair device body is vertically movable by operation of the cylinder.
[45] Moreover, the first support roller may be rotated by a first support roller driving motor mounted separately.
[46] Furthermore, the tube expanding device body may be connected to the surface of the inner wall or the inner pole of the box in such a way that the surface of the inner wall or the inner pole of the box becomes one side wall of the tube expanding device body.
[47] In addition, the tube expanding device body is connected to the surface of the inner wall or the inner pole of the box by hinge portions, or by a connection structure, the connection structure including: a first guide mounting member attached on the surface of the inner wall or the inner pole of the box; a second guide mounting member spaced apart from the first guide mounting member; a guide member supported by the first and second guide mounting members and horizontally mounted between the first and second guide mounting members; a sliding member sliding along the guide member and mounted on the lower end of the tube expanding device body; and a conveying unit slidably moving the tube expanding device body along the guide member in a horizontal direction.
[48] The driving motors, driving units, and rotating units are to provide a rotational movement or a rectilinear movement, and may be an electric or pneumatic motor or a cylinder, and may further include a deceleration device or a converter for converting the rectilinear movement or the rotational movement into a rotational movement or a rectilinear movement.
[49] In the case where two or more of the inside repair device, the first outside repair device, the second outside repair device, the inside and outside repair device, the tube expanding device, and the cutting and bonding device are mounted inside the box, it is preferable that a rail is mounted on the inner ceiling of the box so as to easily hold and convey the tire on the ceiling.
[50] In addition, the inside repair device, the first outside repair device, the second outside repair device, the inside and outside repair device, the tube expanding device, and the cutting and bonding device respectively have their own control boards, but in the case where two or more of the devices are mounted inside the box, the tire retreading system further includes an integrated control board for controlling the entire process of retreading the tire. At this time, each control board controls only matters related with operation of the corresponding device.
[51]
Advantageous Effects
[52] According to the present invention, the tire retread system can be easily moved even though a tire retreading factory is moved to other place, since all devices necessary for retreading the tire are mounted inside the container type box without disassembling and reinstalling the tire retreading system.
[53] Furthermore, since only wanted devices can be selectively mounted inside the box, adjacent car repairing companies may cooperate with one another to be equipped with the entire retreading system, or the car repairing company may partially buy some devices and partially lease the other devices.
[54] Moreover, the tire retread system can improve work environments by reducing noise since power used for each device mounted inside the box is supplied from the outside.
[55] In addition, since the tire retread system can retread the waste tire in a place where the waste tire is separated from a vehicle, the system can reduce time and money required for transporting waste tires to a retreading factory, allows car repair centers which has a small installation space to easily retread tires because the system does not need a site to store collected waste tires or a factor for installing retreading facilities and equipments, thereby easily retreading waste tires and reducing retreading costs. [56] Additionally, the tire retread system according to the present invention can reduce an occupied space of each device since the wall surface of the container type box is used as a frame. [57]
Brief Description of the Drawings
[58] FIG. 1 is a view of a conventional inside repair device;
[59] FIG. 2 is a view of a conventional cutting device;
[60] FIG. 3 is a view of a conventional outside repair device;
[61] FIG. 4 is a view of a conventional bonding device;
[62] FIG. 5 is a view of a conventional tube expanding device;
[63] FIG. 6 is a view of a conventional chamber;
[64] FIG. 7 is a view showing a combined relation between an envelope tube and a tire;
[65] FIG. 8 is an arrangement view of a tire retread system according to a preferred embodiment of the present invention; [66] FIG. 9 is a view of a tire retread system according to another preferred embodiment of the present invention; [67] FIG. 10 is a view showing an installation state of an inside repair device according to the present invention; [68] FIG. 11 is a view showing a folded state of the inside repair device when it is not used; [69] FIG. 12 is a view showing another installation state of the inside repair device according to the present invention; [70] FIG. 13 is a view showing an installation state of a first outside repair device according to the present invention; [71] FIG. 14 is a view showing a structure and an installation state of an inside and outside repair device according to the present invention; [72] FIG. 15 is a view showing a mounted state of a tube expanding device according to the present invention; [73] FIG. 16 is a view showing another mounted state of the tube expanding device according to the present invention; [74] FIG. 17 is a view showing a further mounted state of the tube expanding device according to the present invention; [75] FIG. 18 is a view showing a structure and an installation state of a cutting and bonding device according to the present invention; and [76] FIG. 19 is a view showing a structure and an installation state of a second outside repair device according to the present invention. [77]
Best Mode for Carrying Out the Invention
[78] Reference will be now made in detail to the preferred embodiment of the present invention with reference to the attached drawings.
[79] A tire retread system according to the present invention includes a container type box 200, and at least one of an inside repair device 300, a first outside repair device 400, an inside and outside repair device 500, a tube expanding 600, and a cutting and bonding device 700 mounted inside the container type box 200. In this case, all the above devices together with a chamber 800 may be mounted inside the container type box 200 as shown in FIG. 8, but each of the above devices may be mounted inside the box 200 one by one as shown in FIG. 9.
[80] Since all devices of the tire retreading system are mounted inside the container type box, even though a tire retreading factory is moved to other place, there is no need to disassemble and reinstall the tire retreading system.
[81] Furthermore, in the case of the tire retreading system that at least one of the inside repair device, the first outside repair device, the second outside repair device, the inside and outside repair device, the tube expanding device and the cutting and bonding device are mounted inside the box, car repairing companies may cooperate with one another to be equipped with the entire retreading system, partially buy some devices and partially lease the other devices so that the company may withdraw a bond when the rent is not paid.
[82] The container type box 200 may be used by converting an existing container box, or manufactured separately.
[83] The container type box 200 includes a power supply line (not shown) mounted along a side therein, a power connection part (not shown) disposed on a side of the outer surface thereof and connected with an external power source for supplying power from the outside to the inside through the power supply line, and an entrance 210 for passing an operator and articles therethrough.
[84] The driving force used in the retreading system according to the present invention is electric power and pneumatic pressure. Electric power is supplied through the power supply line using the external power source, but pneumatic pressure is generated from an external pneumatic generator and supplied through the power supply line, or directly supplied from a pneumatic generator mounted in the retreading system. If electric power and pneumatic pressure are used together, it is preferable to form individual power supply lines.
[85] The power supply line may be mounted inside the wall body of the container type box, or mounted along the surface of the inner wall, the floor or the ceiling. Connection of the power supply line to each device can be easily carried out by those skilled, and so a detailed description will be omitted.
[86] It is preferable to temporarily install a rail on the ceiling of the box for holding and moving a tire.
[87] Hereinafter, methods for combining the inside repair device 300, the first outside repair device 400, the second outside repair device 900, the inside and outside repair device 500, the tube expanding device 600, the cutting and bonding device 700 and the chamber 800 to the inside the container type box 200 will be described.
[88] First, the inside repair device 300 shown in FIG. 10 includes: an inside repair device body 310 combined with and mounted on the surface of the inner wall of the box 200; a pair of first support rollers 320 connected to the inside repair device body 310 for supporting the tire; a pair of first arms 340, each having a cylindrical front end 330 contacting with the inner periphery of the mounted tire for spreading the tire in a width direction; and a first arm actuating part 350 receiving driving force from the power supply line for actuating the first arms.
[89] The inside repair device body 310 includes a protrusion 312 protruding in such a way as to be combined with the surface of the inner wall of the box 200; and a receiving portion 314 to which the protrusion 312, the first support rollers 320, the first arms 340 and the first arm actuating part 350 are combined.
[90] The inside repair device body 310 can be mounted on the surface of the inner wall of the box 200 in such a way as to fix the protrusion of the inside repair device body 310 to the surface of the inner wall of the box 200 by welding. However, to locate the inside repair device body 310 in a small space to be fit to the operator's height, a mounting bracket 360 mounted on the surface of the inner wall of the box 200 as shown in FIG. 10 may be connected to an end of the protrusion 360 of the inside repair device body via at least two pins in such a way that the inside repair device body is rotated on one of the pins 362 and fixed by the other pin 364. By the above combination, the operator can carry out wanted work without fatigue by lifting up the inside repair device body 310 as shown in FIG. 10, and after the use, as shown in FIG. 11, rotates the inside repair device body 310 downwardly to save the occupied space.
[91] FIG. 11 shows a state where the mounting bracket 360 is mounted on an inner pole of the box. Hereinafter, when various repair devices are mounted on a wall body, they may be mounted on the surface of the inner wall of the box or on the inner pole of the box. The mounting position is not restricted to this embodiment.
[92] Furthermore, as shown in FIG. 12, a vertically movable cylinder 370 may be mounted on the surface of the inner wall of the box 200 and the inside repair device body 310 is fixed in an operation space of the cylinder, so that the inside repair device body 310 can be moved vertically by operation of the cylinder 370.
[93] Not shown in the drawings, but another vertically movable cylinder may be further mounted on the surface of the inner wall or the inner pole of the box. After the mounting bracket is combined in the operation space of the cylinder, the protrusion of the inside repair device body may be connected with the mounting bracket via at least two pins in such a way that the inside repair device body is rotated on one of the pins and fixed by the other pin.
[94] Moreover, the first support rollers 320 may be rotated by a support roller actuating motor separately mounted so as to rotate the tire.
[95] The first outside repair device 400 shown in FIG. 13 includes: a second arm 410 protruding from the pole mounted inside the box 200; a first driving motor 420 mounted on the second arm 410 and having a shaft rotated by power received from the power supply line to generate driving force for rotating the tire; a first driving roller 430 connected to the shaft of the first driving motor 420 and rotating the tire in contact with the inner ring of the tire; a third arm 440 rotatably mounted on the inner pole of the box 200; a first rotating unit 450 for rotating the third arm 440; and second support rollers 460 mounted on the third arm 440 for supporting the tire in contact with the inner ring of the tire. Instead of the conventional repair body and the power generator mounted inside the repair body, the present invention is characterized in that the inner pole and the power supply line are used inside the box. Since other operational relations of the first outside repair device are the same as the prior arts, their description will be omitted.
[96] The second outside repair device 900 shown in FIG. 19 includes: an eighth arm 910 rotatably mounted on the inner pole of the box 200; a sixth driving motor 920 mounted on the eighth arm 910 and having a shaft rotating by receiving power from the power supply line to generate driving force for rotating the tire; a third driving roller 970 connected to the shaft of the sixth driving motor 920 for rotating the tire in contact with the inner ring of the tire; a third rotating unit 950 for rotating the eighth arm 910; and a fourth support roller 960 mounted on the eighth arm 910 in a state where it is spaced apart from the third driving roller 970, and supporting the tire in contact with the inner ring of the tire.
[97] The inside and outside repair device 500 shown in FIG. 14 includes: a fourth arm
510 protruding from the inner pole of the box; a second driving motor 520 mounted on the fourth arm 510 and having a shaft rotating by receiving power from the power supply line to generate driving force for rotating the tire; a second driving roller 530 connected to the shaft of the second driving motor 520 for rotating the tire in contact with the inner ring of the tire; a fifth arm 540 rotatably mounted on the inner pole of the box 200; a second rotating unit 550 for rotating the fifth arm 540; a pair of sixth amis 570, each having a third support roller 560 mounted on the front end thereof and fit to the inside of the tire for supporting the tire, hinged to the fifth arm 540 to spreading the tire in the width direction; and a sixth arm actuating part (not shown) positioned between the sixth arms 570 for rotating the sixth arms 570.
[98] The inside and outside repair device 500 is a combination of the inside repair device and the outside repair device, and so, can rotate the tire by the second driving roller 530, spread the tire in the width direction by the sixth arms 570 to allow the operator to inspect and repair the inside of the tire, and prevent contamination of the outer periphery of the cut tire by preventing the tire from touching the floor.
[99] The sixth arm actuating part for actuating the sixth arms may be a cylinder.
[100] The tube expanding device 600 shown in FIG. 15 includes: a third driving motor
(not shown) mounted therein for generating driving force by receiving power from the power supply line; a tube expanding device body 610 mounted on the inner pole of the box; a number of seventh arms 630 for radially spreading an envelope tube by rotation of a number of rotary shafts 620 receiving power generated from the third driving motor, and a number of wheels 640, each rotatably mounted on each seventh arm 630 for supporting the envelope tube.
[101] The tube expanding device body 610 may be combined to the surface of the inner wall of the box in such a way that the surface of the inner wall of the box 200 becomes a wall of the tube expanding device body 610 as shown in FIG. 17, or combined to the inner pole of the box 200 via hinge portions 650 as shown in FIG. 15. Since the tube expanding device body 610 is rotatably combined to the inner pole of the box via the hinge portions 650, the operator can rotate it for a convenient use during work, and rotate it toward the wall surface of the box 200 after work to effectively utilize a space.
[102] As shown in FIG. 16, the tube expanding device may include: a first guide mounting member 660 attached on the surface of the inner wall or the inner pole of the box; a second guide mounting member 662 spaced apart from the first guide mounting member 660; a guide member 664 supported by the first and second guide mounting members 660 and 662 and horizontally mounted between the first and second guide mounting members 660 and 662; a sliding member 666 sliding along the guide member 664 and mounted on the lower end of the tube expanding device body 610; and a conveying unit 664 slidably moving the tube expanding device body 610 in a horizontal direction along the guide member 664.
[103] For the conveying unit 664, a cylinder, a motor, or a power transmitting unit (chain, wire, or gear) may be used.
[104] The cutting and bonding device 700 shown in FIG. 18 includes: a fourth driving motor (not shown) mounted inside the inner pole 710 of the box for rotating the tire by receiving power from the power supply line; a fourth driving motor transmission part (not shown) mounted inside the pole 710 where the fourth driving motor is mounted, and converting a speed of the fourth driving motor; a horizontally movable guide rail 732 mounted in such a way as to connect the pole 710 in which the fourth driving motor and the fourth driving motor transmission part are mounted with an adjacent pole 711 together; a tire mounting part 720 for contacting a rubber band with the inner ring of the tire, fixing the tire on the inner ring of the tire and supplying compressed air to the inside of the tire by increasing the diameter of the outer diameter portion where the rubber band is mounted; a tread support board 730 mounted at a side of the tire mounting part 720 for supporting a bonding belt and a tread, the tread support board 730 being connected with the horizontally movable guide rail 732 in such a way as to be moved horizontally; and a tread cutting part 740 having a tread cutting blade 742 and a fifth driving motor 744 and mounted at the other side of the tire mounting part 720 in such a way as to perform rectilinear movement and rotational movement.
[105] It is also preferable that the cutting and bonding device 700 may further include a chip collecting and discharging part sucking rubber chips of the tread cut by the cutting blade 742 of the tread cutting part 740 and discharging them to the outside of the box.
[106] The cutting and bonding device 700 is characterized in that the tire mounting parts and the tire mounting part actuators of the prior art cutting device and bonding device are united into one. The tire mounting part is rotated at a rapid speed to cut the tread of the tire. However, when the tread and the bonding belt are wound on the tire, since the tire mounting part must be rotated at a slow speed, the cutting and bonding device 700 further includes a fourth driving motor transmission part.
[107] The fourth driving motor transmission part may be a gear or a belt, or an inverter in the case of an electric motor.
[108] Moreover, the tread support board 730 may further include a compression roller 734 for compressing the tread and the bonding belt to the tire, and a ninth arm for closely contacting the compression roller 734 to the tire. The ninth arm can be actuated by any actuating unit which can rotate the arm.
[109]
Industrial Applicability
[110] The tire retreading system according to the present invention is usable in various fields related with a waste tire recycling industry.
[I l l]

Claims

Claims
[1] A tire retread system comprising: a container type box having a power supply line mounted along a side therein, a power connection part disposed on a side of the outer surface thereof and connected with an external power source for supplying power from the outside to the inside through the power supply line, and an entrance; and a tire retreading part mounted inside the container type box, the tire retreading part having at least one of an inside repair device, a first outside repair device, a second outside repair device, an inside and outside repair device, tube expanding device, and a cutting and bonding device, wherein the inside repair device includes: an inside repair device body combined with and mounted on the surface of the inner wall or an inner pole of the box; a pair of first support rollers connected to the inside repair device body for supporting the tire; a pair of first arms, each having a cylindrical front end contacting with the inner periphery of the mounted tire for spreading the tire in a width direction; and a first arm actuating part receiving power from the power supply line for actuating the first arms, wherein the first outside repair device includes: a second arm protruding from the surface of the inner wall or the inner pole of the box; a first driving motor mounted on the second arm and having a shaft rotated by power received from the power supply line to generate driving force for rotating the tire; a first driving roller connected to the shaft of the first driving motor and rotating the tire in contact with an inner ring of the tire; a third arm rotatably mounted on the surface of the inner wall or the inner pole of the box; a first rotating unit for rotating the third arm; and second support rollers mounted on the third arm for supporting the tire in contact with the inner ring of the tire, wherein the second outside repair device includes: an eighth arm rotatably mounted on the surface of the inner wall or the inner pole of the box; a sixth driving motor mounted on the eighth arm and having a shaft rotating by receiving power from the power supply line to generate driving force for rotating the tire; a third driving roller connected to the shaft of the sixth driving motor for rotating the tire in contact with the inner ring of the tire; a third rotating unit for rotating the eighth arm; and a fourth support roller mounted on the eighth arm in a state where it is spaced apart from the third driving roller, and supporting the tire in contact with the inner ring of the tire, wherein the inside and outside repair device includes: a fourth arm protruding from the surface of the inner wall or the inner pole of the box; a second driving motor mounted on the fourth arm and having a shaft rotating by receiving power from the power supply line to generate driving force for rotating the tire; a second driving roller connected to the shaft of the second driving motor for rotating the tire in contact with the inner ring of the tire; a fifth arm rotatably mounted on the inner pole of the box; a second rotating unit for rotating the fifth arm; a pair of sixth arms, each having a third support roller mounted on the front end thereof and fit to the inside of the tire for supporting the tire, hinged to the fifth arm to spreading the tire in the width direction; and a sixth arm actuating part positioned between the sixth arms for rotating the sixth arms, wherein the tube expanding device includes: a third driving motor mounted therein for generating driving force by receiving power from the power supply line; a tube expanding device body mounted on the inner pole of the box; a number of seventh arms for radially spreading an envelope tube by rotation of a number of rotary shafts receiving power generated from the third driving motor, and a number of wheels, each rotatably mounted on each seventh arm for supporting the envelope tube, and wherein the cutting and bonding device includes: a fourth driving motor mounted inside the inner pole of the box for rotating the tire by receiving power from the power supply line; a fourth driving motor transmission part mounted inside the inner pole of the box where the fourth driving motor is mounted, the fourth driving motor transmission part converting a speed of the fourth driving motor; a horizontally movable guide rail mounted in such a way as to connect the inner pole in which the fourth driving motor and the fourth driving motor transmission part are mounted with an adjacent pole together; a tire mounting part for contacting a rubber band with the inner ring of the tire, fixing the tire on the inner ring of the tire and supplying compressed air to the inside of the tire by increasing the diameter of the outer diameter portion where the rubber band is mounted; a tread support board mounted at a side of the tire mounting part for supporting a bonding belt and a tread, the tread support board being connected with the horizontally movable guide rail in such a way as to be moved horizontally; and a tread cutting part having a tread cutting blade and a fifth driving motor and mounted at the other side of the tire mounting part in such a way as to perform rectilinear movement and rotational movement.
[2] A tire retread system according to claim 1, wherein the inside repair device body is connected to a mounting bracket mounted on the surface of the inner wall or the inner pole of the box via at least two pins in such a way that the inside repair device body is rotated on one of the pins and fixed to the mounting bracket by the other pin, or wherein the inside repair device body is fixed in an operation space of a vertically movable cylinder mounted on the surface of the inner wall or the inner pole of the box so that the inside repair device body is vertically movable by operation of the cylinder.
[3] A tire retread system according to claim 1, wherein a vertically movable cylinder is mounted on the surface of the inner wall or the inner pole of the box, a mounting bracket is combined in an operation space of the cylinder, and the inside repair device body is connected to the mounting bracket via at least two pins in such a way that the inside repair device body is rotated on one of the pins and fixed to the mounting bracket by the other pin.
[4] A tire retread system according to claim 1, wherein the tube expanding device body is connected to the surface of the inner wall or the inner pole of the box by hinge portions, or by a connection structure, the connection structure including: a first guide mounting member attached on the surface of the inner wall or the inner pole of the box; a second guide mounting member spaced apart from the first guide mounting member; a guide member supported by the first and second guide mounting members and horizontally mounted between the first and second guide mounting members; a sliding member sliding along the guide member and mounted on the lower end of the tube expanding device body; and a conveying unit slidably moving the tube expanding device body along the guide member in a horizontal direction.
[5] A tire retread system according to any one of claims 1 to 4, wherein the box includes a rail temporarily mounted on the ceiling thereof for holding and moving the tire on the ceiling.
[6] A tire retread system according to any one of claims 1 to 4, wherein the power supply line is mounted along the inner side or the inside of the inner wall of the container type box.
PCT/KR2006/001136 2005-04-07 2006-03-29 Tire retread system Ceased WO2006107158A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020050028811A KR100516783B1 (en) 2005-04-07 2005-04-07 Tire retread equipment
KR10-2005-0028811 2005-04-07

Publications (1)

Publication Number Publication Date
WO2006107158A1 true WO2006107158A1 (en) 2006-10-12

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WO (1) WO2006107158A1 (en)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN101665006B (en) * 2008-09-03 2013-08-28 软控股份有限公司 Upper annular tire tread forming machine and method thereof
US20230219314A1 (en) * 2022-01-11 2023-07-13 Bridgestone Bandag, Llc Envelope spreader system for enveloping a retreaded tire
CN117207573A (en) * 2023-08-07 2023-12-12 青岛森麒麟轮胎股份有限公司 Aviation tire repair equipment

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
KR100771690B1 (en) 2006-09-21 2007-10-31 금호타이어 주식회사 Tire Sidewall Repair
US8357254B2 (en) 2010-01-29 2013-01-22 Bridgestone Bandag, Llc Method and apparatus for improved tread splicing
WO2018056482A1 (en) * 2016-09-23 2018-03-29 (주) 대호산업 Molding apparatus and molding method for remanufactured tire

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EP0086766A2 (en) * 1982-02-17 1983-08-24 Hugo Verner Elm Plant for the vulcanization of tyres
JPS6356438A (en) * 1986-08-28 1988-03-11 Bridgestone Corp Preparation of retreaded tire
US5658419A (en) * 1996-01-05 1997-08-19 Herron; Thomas F. Curing envelope spreader for use in a tire retreading process
KR20010034838A (en) * 1998-05-05 2001-04-25 레카믹 에스.에이. Tyre retreading plant
JP2002347136A (en) * 2001-05-24 2002-12-04 Bridgestone Corp System for molding retreaded tire

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Publication number Priority date Publication date Assignee Title
EP0086766A2 (en) * 1982-02-17 1983-08-24 Hugo Verner Elm Plant for the vulcanization of tyres
JPS6356438A (en) * 1986-08-28 1988-03-11 Bridgestone Corp Preparation of retreaded tire
US5658419A (en) * 1996-01-05 1997-08-19 Herron; Thomas F. Curing envelope spreader for use in a tire retreading process
KR20010034838A (en) * 1998-05-05 2001-04-25 레카믹 에스.에이. Tyre retreading plant
JP2002347136A (en) * 2001-05-24 2002-12-04 Bridgestone Corp System for molding retreaded tire

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101665006B (en) * 2008-09-03 2013-08-28 软控股份有限公司 Upper annular tire tread forming machine and method thereof
US20230219314A1 (en) * 2022-01-11 2023-07-13 Bridgestone Bandag, Llc Envelope spreader system for enveloping a retreaded tire
US12257798B2 (en) * 2022-01-11 2025-03-25 Bridgestone Bandag, Llc Envelope spreader system for enveloping a retreaded tire
CN117207573A (en) * 2023-08-07 2023-12-12 青岛森麒麟轮胎股份有限公司 Aviation tire repair equipment

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