JP5600951B2 - Feeder - Google Patents

Description

  The present invention relates to a feeding device used for feeding a long object such as a heat transfer tube of an air conditioner.

  Conventionally, as this type of feeding device, as shown in FIG. 9, two flat belts 301 and 302 are arranged to face each other, and a groove having a substantially arc-shaped cross section provided on the opposed surfaces of the flat belts 301 and 302 is provided. There is one in which the heat transfer tube 303 is sandwiched between 301a and 302a (Patent Document 1: Japanese Patent Laid-Open No. 2008-126268, FIG. 3).

  However, in the above-described conventional feeding device, the arc-shaped grooves 301a and 302a have to have a size into which the heat transfer tube 303 fits. There was a problem that it was not versatile because it had to be replaced with a flat belt having grooves.

  Further, in the above-mentioned conventional feeding device, since the heat transfer tube 303 is pressed by the arc-shaped grooves 301a and 302a of the flat belts 301 and 302 from the upper and lower directions, when viewed microscopically, it becomes a two-point contact, There was a possibility that the heat transfer tube 303 would become flat.

  Furthermore, since the above-described conventional feeding device uses special flat belts 301 and 302 having arc-shaped grooves 301a and 302a, a dedicated die is required for the special flat belts 301 and 302. As a result, there are problems that the manufacturing cost increases and the delivery time from the ordering becomes longer.

FIG. 3 of Japanese Patent Laid-Open No. 2008-126268

  Therefore, the object of the present invention is to be able to transport long objects of various diameters and is versatile, and there is no risk of flattening the long objects, and it is inexpensive and can be manufactured with a short delivery time. An object of the present invention is to provide a feeding device that can perform the above.

In order to solve the above problems, the feeding device of the present invention is:
A round belt having a substantially circular cross section,
A pulley around which the round belt is wound;
A driving device for driving the pulley,
The four round belts are arranged so as to come into contact with the periphery of a long object having a substantially circular cross section ,
A pressing mechanism having a pressing roller for pressing the round belt toward a long object;
A sensor for detecting that the long object has come to a predetermined position;
A control unit that weakens the force with which the pressing roller of the pressing mechanism presses the round belt when receiving a signal from the sensor indicating that the long object has come to a predetermined position;
It is characterized in that <br/> comprising.

  Since the four round belts are in contact with and transport the four round belts at four locations around a long object having a substantially circular cross section such as a heat transfer tube, the feeding device having the above-described configuration can transport long objects having various wide diameters. Can be versatile. Further, by changing the crushing cost of the four round belts or replacing the round belt, which is a general-purpose product, with a round belt having a different diameter, it is possible to transport long objects having various diameters.

The feeding device does not press a long object such as a heat transfer tube by a two-point contact with an arc-shaped groove of a flat belt, but presses four places around the long object with four round belts. Therefore, the long object does not become flat and can prevent partial deformation.
Moreover, in this invention, since a round belt can be pressed toward a long thing with a press roller, the conveyance force of a round belt can be increased.
Further, according to the present invention, the sensor detects that the long object has come to a predetermined position, and based on a signal indicating that the long object has come to the predetermined position, the control unit Since the force with which the pressing roller presses the round belt can be weakened and the conveying force can be reduced, the buckling of the long object and the deformation of the tip of the long object can be prevented.

  The feeding device is not a specially shaped belt such as an arc-shaped grooved flat belt, but a general round belt is used, so that it can be manufactured at low cost and with short delivery time.

In one embodiment,
The two round belts are wound around the first pulley,
The other two round belts are wound around a second pulley.

  According to the above embodiment, since the two round belts are wound around each of the first and second pulleys, the two round belts can be easily synchronized, and the structure becomes simple and inexpensive. .

In one embodiment,
The pulley around which the two round belts are wound is provided with a protrusion that is positioned between the two round belts and that makes surface contact with the two round belts.

  According to the above-described embodiment, the presence of the protrusions that are in surface contact with the two round belts increases the contact area between the two round belts and the pulley, thereby increasing the conveyance capability.

In one embodiment,
The pressing roller is a roller with a hook having a hook that prevents the round belt from moving.

  According to the above embodiment, when the round belt is pressed against a long object by the roller with a hook, the round belt tries to escape in the lateral direction with respect to the pressing direction. Therefore, the conveyance force can be increased.

  Further, the ridge is a part of a roller with a ridge and rotates, so that even if the lateral movement of the round belt is restricted, the round belt is not damaged.

In one embodiment,
A gear mechanism for synchronizing the pulleys that drive the four round belts is provided.

  In the above embodiment, since the pulley is synchronized by the gear mechanism, the feed speeds of the four round belts can be easily made the same.

  In the feeding device of the present invention, four round belts are brought into contact with four locations around a long object having a substantially circular cross section such as a heat transfer tube, etc., so that the long object is conveyed. It has the advantages that it can be transported, is versatile, has a long object that does not become flat, can prevent partial deformation, and can be manufactured at low cost and with short delivery times.

FIG. 1 is a schematic diagram of a vendor using a feeding device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a main part of the feeding device of the embodiment. FIG. 3 is a perspective view of the feeding device of the embodiment. FIG. 4 is a perspective view seen from the rear of the feeding device of the embodiment. FIG. 5 is a perspective view seen from the front of the feeding device according to the embodiment. FIG. 6 is a perspective view showing a part of the gear mechanism of the feeding device of the embodiment. FIG. 7 is a schematic diagram illustrating a pressing mechanism and a support mechanism of the feeding device according to the embodiment. It is a figure which shows the modification of the press roller and support roller of FIG. It is a schematic diagram which shows the conventional feeder.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

  FIG. 1 is a front view showing a vendor using a feeding device according to an embodiment of the present invention.

  This vendor includes a cutter unit 100 and a vendor unit 200. The cutter unit 100 includes a leveler 2 that removes wrinkles such as bending of a heat transfer tube 10 of an air conditioner as an example of a long object, and a heat transfer tube 10 in which wrinkles from the leveler 2 are corrected. And a cutter mechanism 4 capable of moving back and forth to cut the heat transfer tube 10 at a predetermined location. On the other hand, the bender unit 200 can be moved back and forth to adjust the cutting position of the heat transfer tube 10 by the cutter mechanism 4, and is positioned by the stopper 5 that contacts the tip of the heat transfer tube 10 and is positioned. And a bending mechanism 6 for bending the heat transfer tube 10.

  As shown in the schematic diagram of FIG. 2, the feeding device 3 is in contact with four substantially equal intervals around the heat transfer tube 10 of an air conditioner as an example of a long object having a circular cross section. Round belts 11, 12, 13, and 14 are provided. The round belts 11, 12, 13, and 14 are made of, for example, rubber or flexible synthetic resin.

  Specifically, as shown in FIG. 3, the first pulleys 21 and 23 and the second pulleys 22 and 24 are rotatably attached to the main body 20, and the second pulleys 22 and 24 are opposed to the first pulleys 21 and 23. ing. 4 is an enlarged perspective view of the feeding device of FIG. 3 as viewed from the rear, and FIG. 5 is an enlarged perspective view of the feeding device of FIG. 3 as viewed from the front.

  Two sets of round belts 11 and 12 having a substantially circular cross section are wound around the first pulleys 21 and 23, and two sets of round belts having a substantially circular cross section are wound around the second pulleys 22 and 24. The belts 13 and 14 are wound so that the two round belts 11, 12 and 13, 14 are synchronized.

  As shown in FIG. 6, the first gear 31 is fixed to the shaft of the first pulley 23, the second gear 32 is fixed to the shaft of the second pulley 24, and the first and second gears 31, 32 are connected to each other. By meshing, the first and second pulleys 23 and 24 are synchronized, and the four round belts 11, 12, 13 and 14 are synchronized and conveyed at the same speed. The first and second gears 31 and 32 are examples of a gear mechanism that synchronizes the first and second pulleys 23 and 24 in order to feed the four round belts 11, 12, 13, and 14 at the same feeding speed. Configure. The second gear 32 is engaged with a gear 39 driven by a motor as an example of a drive device (not shown), and the gear mechanisms 31 and 32 are driven by this motor.

  Since the gear mechanisms 31 and 32 and the motor are used in this way, the first and second pulleys 23 and 24 are synchronized with a simple and inexpensive structure, and the four round belts 11, 12, 13 and 14 are the same. Can be sent at a feed rate.

  On the other hand, as shown in FIG. 2, in each of the first pulley 21 and the second pulley 22, two arc-shaped belt grooves 25, 25; 26, 26 into which the two round belts 11, 12; 26 is provided.

  Further, the first pulley 21 and the second pulley 22 are respectively positioned between the two round belts 11, 12; 13, 14 and are in surface contact with the two round belts 11, 12; Protrusions 27 and 28 each having a substantially circular arc in cross section are provided. Although not shown, the other first pulley 23 and second pulley 24 are also provided with the same protrusions as the protrusions 27 and 28.

  Contact between the round belts 11, 12; 13, 14 and the first and second pulleys 21, 23; 22, 24 due to the presence of the protrusions 27, 28 in surface contact with the two round belts 11, 12; 13, 14 The area increases and the carrying capacity increases.

  On the other hand, as shown in FIG. 3, the inner sides of the round belts 11 and 12 wound around the first pulleys 21 and 23 are pressed so that the round belts 11 and 12 are directed toward the heat transfer tube 10, that is, the first A holding mechanism 50 that presses against the round belts 13 and 14 wound around the two pulleys 22 and 24; and a support mechanism 60 that supports the round belts 13 and 14 wound around the second pulleys 22 and 24 from the inside. Is provided in the main body 20.

  As shown in FIG. 7, the support mechanism 60 includes a support roller 61 having a cylindrical surface that supports the round belts 13 and 14 wound around the second pulleys 22 and 24 (see FIG. 3) from the inside, and the support roller 61. The roller 61 is rotatably supported by a shaft 65 and includes a roller support member 62 attached to the main body 20.

  Further, the holding mechanism 50 allows the round belts 11 and 12 wound around the first pulleys 21 and 23 (see FIG. 3) to be attached to the round belts 13 and 14 wound around the second pulleys 22 and 24 from the inside. A pressing roller 51 having a cylindrical surface to be pressed, a support member 52 that rotatably supports the pressing roller 51 by a shaft 55, and the support member 52 that can be pressed downward and attached to the main body 20. And a pneumatic cylinder 53.

  By pressing the pressing roller 51 toward the round belts 11 and 12 by the pneumatic cylinder 53 of the pressing mechanism 50, the round belts 11 and 12 and the round belts 13 and 14 supported by the support roller 61 The heat transfer tube 10 is strongly pressed from four locations, and a large conveying force is obtained.

  The portions 52a and 52a of the support member 52 located on the outer side in the radial direction of the pressing roller 51 of the support member 52 of the pressing mechanism 50 are located on both sides of the round belts 11 and 12 in the lateral direction. The portions 62a and 62a of the support member 62 located on the outer side in the radial direction of the support roller 61 of the support member 62 of the support mechanism 60 are prevented from moving in the lateral direction to maintain the conveying force for the heat transfer tube 10. Located on both lateral sides of the round belts 13 and 14, the round belts 13 and 14 are prevented from moving in the lateral direction to maintain the conveying force for the heat transfer tube 10.

  The pneumatic cylinder 53 is controlled by the control unit 70 shown in FIG. The control unit 70 detects that the heat transfer tube 10 as a long object has come to a predetermined position by the sensor 71 provided on the stop 5, that is, that the tip of the heat transfer tube 10 has come into contact with the stop 5. Then, the pneumatic cylinder receives the signal indicating that the tip of the heat transfer tube 10 has come into contact with the stopper 5 from the sensor 71 and weakens the force with which the pressing roller 51 of the pressing mechanism 50 presses the round belts 11 and 12. The pressure of the air supplied to 53 is controlled to be low. When this control receives a signal from the sensor 71 indicating that the tip of the heat transfer tube 10 has come into contact with the stopper 5, a pressure control valve (not shown) built in the control unit 70 is operated with the air pressure when the heat transfer tube 10 is conveyed. This is done by automatically setting a predetermined low pressure lower than the air pressure supplied to the cylinder 53.

  As described above, when the tip of the heat transfer tube 10 comes into contact with the stopper 5, the control unit 70 reduces the force with which the pressing roller 51 of the pressing mechanism 50 presses the round belts 11 and 12 toward the heat transfer tube 10. Since the conveying force is reduced, buckling of the heat transfer tube 10 and deformation of the tip of the heat transfer tube 10 can be prevented.

  In FIG. 3, 57 is a synchronous cylinder that synchronizes the ascending or descending speed, and in FIGS. 3 and 5, 82 is a guide portion that guides the heat transfer tube 10.

  The feeding device having the above-described configuration operates as follows.

  Now, as shown in FIGS. 1, 3 and 4, it is assumed that a heat transfer tube 10 having a substantially circular cross section is supplied from the leveler 2 to the feeding device 3. Then, as shown in FIGS. 2 and 7, the four round belts 11, 12, 13, and 14 having a substantially circular cross section come into contact with four equally spaced locations around the heat transfer tube 10 having a substantially circular cross section. . As shown in FIGS. 3, 4, 5, and 6, the round belts 11, 12, 13, and 14 are wound around the first pulleys 21, 23 and the second pulleys 22, 24, and the first and second pulleys 23. 24 are synchronously rotated by a motor as an example of a drive device (not shown) via a gear mechanism having first and second gears 31 and 32 meshing with each other and a gear 39. The belts 11, 12, 13, and 14 are sent at the same speed, and press the four equally spaced locations around the heat transfer tube 10 to convey the heat transfer tube 10 forward.

  Thus, as shown in FIGS. 2 and 7, the feeding device 3 includes four round belts 11, 12, 13, and 14 that are in contact with each other at four equally spaced locations around the substantially circular heat transfer tube 10. Since it is transported, it is possible to transport heat transfer tubes of various diameters by simply replacing the round belt or changing the crushing cost of the round belt, which is versatile.

  Further, the feeding device 3 does not press the heat transfer tube 303 by two-point contact with the arc-shaped grooves 301a and 302a of the flat belts 301 and 302 as in the conventional example of FIG. Since the four round belts 11, 12, 13, and 14 are pressed at four equally spaced locations, the heat transfer tube 10 does not become flat, and uneven deformation can be prevented.

  This feeder 3 is not a specially shaped belt such as a flat belt with an arcuate groove, but uses general round belts 11, 12, 13, and 14, so it can be manufactured at a low cost and with a short delivery time. it can.

  Further, as shown in FIG. 2, the first pulleys 21 and 23 (only 21 is shown in FIG. 2) and the second pulleys 22 and 24 (only 22 are shown in FIG. 2). The two round belts 11, 12; 13, 14 are located between the two round belts 11, 12; 13, 14, and the two round belts 11, 12; Since it is provided, the contact area between the two round belts 11, 12; 13, 14 and the first and second pulleys 21, 23;

  Further, as shown in FIGS. 3 and 7, the round belts 13 and 14 wound around the second pulleys 22 and 24 are supported by the support rollers 61 of the support mechanism 60 from the inside, and are wound around the first pulleys 21 and 23. The inside of the rotated round belts 11 and 12 is pressed by the pressing roller 51 of the pressing mechanism 50, and the round belts 11 and 12 are pressed toward the round belts 13 and 14, that is, toward the heat transfer tube 10. Therefore, the heat transfer tube 10 can be strongly sandwiched by the round belts 11, 12;

  Then, when the sensor 71 shown in FIG. 1 detects that the tip of the heat transfer tube 10 has come into contact with the stop 5, the control unit 70 represents that the tip of the heat transfer tube 10 has come into contact with the stop 5 from the sensor 71. In response to the signal, the pressure of the air supplied to the pneumatic cylinder 53 is controlled so as to weaken the force with which the pressing roller 51 of the pressing mechanism 50 presses the round belts 11 and 12.

  As described above, when the tip of the heat transfer tube 10 comes into contact with the stopper 5, the control unit 70 reduces the force with which the pressing roller 51 of the pressing mechanism 50 presses the round belts 11 and 12 toward the heat transfer tube 10. Since the conveying force is reduced, buckling of the heat transfer tube 10 and deformation of the tip of the heat transfer tube 10 can be prevented.

  In the above embodiment, as shown in FIG. 7, the pressing roller 51 of the pressing mechanism 50 and the supporting roller 61 of the supporting mechanism 60 have a cylindrical shape without wrinkles. However, in the modified example shown in FIG. The flanged roller 41 includes a cylindrical main body portion 41a and a flange 41b, and the support roller 42 includes a flanged roller 42 and includes a cylindrical main body portion 42a and a flange 42b.

  In the modification shown in FIG. 8, when the round belts 11 and 12 are pressed by the cylindrical surface-shaped main body 41a of the pressing roller 41 with the flange, the round belts 11 and 12; The heel 41b that rotates with the main body portion 41a of the pressing roller 41 prevents the round belts 11, 12, 13 and 14 from escaping, and the heel 42b that rotates together with the main body portion 42a of the support roller 42. Therefore, the conveying force can be increased without damaging the round belts 11, 12;

  In the above embodiment and the modification, as shown in FIGS. 7 and 8, the pressing rollers 51 and 41 and the supporting rollers 61 and 42 press or support the round belts 11, 12, 13, and 14 on their cylindrical surfaces. However, similarly to the first and second pulleys 21, 23, 22, and 24, the round belts 11, 12, 13, and 14 may be pressed or supported by arc-shaped grooves.

  In the above embodiment, the round belts 11, 12, 13, and 14 have the same diameter, but the four round belts may have different diameters. Further, the four round belts may come into contact with a long object such as a heat transfer tube at irregular intervals around the circumference.

  In the above embodiment, an example of conveying a heat transfer tube of an air conditioner as a long object has been described. However, the present invention is not limited to a heat transfer tube, and any long object can be conveyed as long as the cross section is substantially circular. The inventive feeder can be used.

3 Feeder 10 Heat Transfer Tube 11, 12, 13, 14 Round Belt 20 Body 21, 23 First Pulley 22, 24 Second Pulley 25, 26 Groove 27, 28 Projection 31, 32, 39 Gear 41, 42 Barbed Roller 41b , 42b 鍔 50 pressing mechanism 51 pressing roller 52, 62 supporting member 60 supporting mechanism 61 supporting roller 70 control unit 71 sensor

Claims (5)

Four belts (11, 12, 13, 14) having a substantially circular cross section;
Pulleys (21, 23; 22, 24) around which the round belts (11, 12, 13, 14) are wound;
A driving device for driving the pulleys (21, 23; 22, 24),
The four round belts (11, 12, 13, 14) are arranged so as to contact the periphery of a long object (10) having a substantially circular cross section ,
A pressing mechanism (50) having pressing rollers (41, 51) for pressing the round belts (11, 12) toward the long object (10);
A sensor (71) for detecting that the long object (10) has come to a predetermined position;
When the signal indicating that the long object (10) has come to a predetermined position is received from the sensor (71), the pressing roller (51) of the pressing mechanism (50) is a round belt (11, 12). A control unit (70) for weakening the force of pressing
Feed device according to claim <br/> comprise a. The feeding device according to claim 1,
The two round belts (11, 12) are wound around the first pulleys (21, 23),
The other two round belts (13, 14) are wound around a second pulley (22, 24), and the feeding device is characterized by the above. The feeding device according to claim 2,
The pulleys (21, 23; 22, 24) around which the two round belts (11, 12; 13, 14) are wound are interposed between the two round belts (11, 12; 13, 14). A feeding device characterized by being provided with protrusions (27, 28) that are positioned and in surface contact with the two round belts (11, 12). In the feeding device according to any one of claims 1 to 3 ,
The feeding device according to claim 1, wherein the pressing roller (41) is a flanged roller (41) having a flange (41b) that prevents movement of the round belt (11, 12). In the feeding device according to any one of claims 1 to 4 ,
Gear mechanism (31, 32) for synchronizing pulleys (21, 23; 22, 24) for driving the four round belts (11, 12, 13, 14)
A feeding device comprising:

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