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EP4638114A1 - Procédé et appareil d'assemblage de pailles télescopiques - Google Patents

Procédé et appareil d'assemblage de pailles télescopiques

Info

Publication number
EP4638114A1
EP4638114A1 EP23848707.8A EP23848707A EP4638114A1 EP 4638114 A1 EP4638114 A1 EP 4638114A1 EP 23848707 A EP23848707 A EP 23848707A EP 4638114 A1 EP4638114 A1 EP 4638114A1
Authority
EP
European Patent Office
Prior art keywords
tube
tubes
sensor
conveyor
controller
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.)
Pending
Application number
EP23848707.8A
Other languages
German (de)
English (en)
Inventor
Radoslaw Owczarek
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.)
International Tobacco Machinery Poland Sp zoo
Original Assignee
International Tobacco Machinery Poland Sp zoo
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 International Tobacco Machinery Poland Sp zoo filed Critical International Tobacco Machinery Poland Sp zoo
Publication of EP4638114A1 publication Critical patent/EP4638114A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D5/00—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles
    • B31D5/0095—Making drinking straws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • A47G21/18—Drinking straws or the like
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • A47G21/18—Drinking straws or the like
    • A47G21/189—Drinking straws or the like telescoping
    • 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
    • B29D23/00—Producing tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/205—Corrugating tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
    • B65G47/24—Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/002—Handling tubes, e.g. transferring between shaping stations, loading on mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/565—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits involving interference fits, e.g. force-fits or press-fits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/843—Machines for making separate joints at the same time in different planes; Machines for making separate joints at the same time mounted in parallel or in series
    • B29C66/8432—Machines for making separate joints at the same time mounted in parallel or in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/922—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9221—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force or the mechanical power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/008—Drinking straws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers

Definitions

  • the object of the invention is a method and an apparatus for assembling telescopic drinking straws.
  • the invention relates to checking quality parameters of beverage drinking straws, in particular, the quality of manufacture of the connection between an inner tube and an outer tube, and tightness of the straw.
  • straws which are usually made of plastic or biodegradable material such as paper, for drinking various types of beverages.
  • Two-part straws, so-called telescopic straws usually have in their structure a locking latch that connects the two parts so that, when one part is pushed into the other, the beverage can be consumed with the straw already assembled without risk of a leaky connection.
  • This connection allows the straw to be folded, for example before the straw is wrapped in foil and attached to a beverage. Before the beverage is consumed, the straw is removed from the foil and unfolded to its maximum length.
  • a telescopic drinking straw provided with an outer tube and an inner tube is known from the document EP 4000474A1.
  • the straw has a locking latch, which allows the telescopic straw to be folded by pushing the inner tube into the outer tube while maintaining its tightness.
  • the tightness and proper functioning of the telescopic straw is ensured by a locking latch in the form of embossing on the inner surface of the outer tube and on the outer surface of the inner tube.
  • the publication EP 3903649A1 discloses an apparatus for assembling a telescopic straw from two tubes, an inner tube of smaller diameter and an outer tube of larger diameter.
  • the tubes are conveyed transversely to the conveying direction in grooves situated on the outer surface of the conveyor drum.
  • a rotating element in the form of a roller By means of a rotating element in the form of a roller, the tubes are moved longitudinally in the grooves so that the smaller diameter tube enters the larger diameter tube.
  • the publication EP 0172395 shows a machine and a method for assembling a telescopic straw on a drum conveyor onto which straws with a larger diameter from one tray and straws with a smaller diameter from another tray are fed. By means of pushers, the two straws are then pushed towards each other until the smaller diameter straw is placed inside the larger diameter straw in the correct position.
  • the object of the invention is an apparatus for assembling telescopic straws for the food industry composed of tubes, comprising: a conveyor provided with seats adapted to convey inner tubes and outer tubes transversely to the conveying direction. The tubes are conveyed in pairs in the seats and the inner tubes are longitudinally aligned with the outer tubes.
  • the apparatus further comprises a displacing element adapted to vary the mutual position of the tubes so that the inner tube is partially in the outer tube.
  • the apparatus according to the invention is characterised by being provided with a pressure force measuring sensor adapted to measure the pressure force, in the axial direction, arising during the longitudinal displacement of at least one of the tubes.
  • the apparatus according to the invention is characterised in that at the end of the seat (6), on the side of the outer tube (B), there is a stop element (17) adapted to block the longitudinal movement of the outer tube (B).
  • the apparatus according to the invention is characterised in that at the end of the pocket, on the side of the inner tube, there is a stop element adapted to block the longitudinal movement of the inner tube.
  • the apparatus according to the invention is characterised in that the sensor is situated in the area of the stop element on the side of the pocket.
  • the apparatus according to the invention is characterised in that the sensor is situated on the element displacing the tube.
  • the apparatus according to the invention is characterised in that the sensor is a strain gauge, a measuring matrix, a force transducer or another force measuring device.
  • the apparatus according to the invention is characterised by comprising a controller comparing the reading of the sensor value with at least one nominal value.
  • the apparatus according to the invention is characterised by comprising a rejecting unit adapted to reject defective telescopic straws outside the conveyor.
  • the apparatus according to the invention is characterised in that the rejecting unit rejects defective telescopic straws after a signal from the controller.
  • the apparatus according to the invention is characterised in that the signal from the controller is transmitted to the forming unit for adjusting and/or checking the quality parameters of the embossing on the tube.
  • the object of the invention is a method of assembling telescopic straws for the food industry comprising steps wherein: the inner tubes and the outer tubes are conveyed in pairs in the seats of the conveyor transversely to the conveying direction, the outer tubes being longitudinally aligned with the inner tubes. Furthermore, at least one tube is displaced axially in the seat by varying the mutual position of the tubes by means of the displacing element so that the inner tube is partly in the outer tube.
  • the method according to the invention is characterised in that during the longitudinal displacement of at least one of the tubes, the force of pressure in the axial direction of at least one tube on the sensor is measured.
  • the method according to the invention is characterised in that the force measurement is carried out continuously.
  • the method according to the invention is characterised in that the obtained result of the pressure force measurement is compared with at least one nominal value in the controller.
  • the method according to the invention is characterized by further comprising a step wherein defective straws are rejected from the conveyor by means of a rejecting unit after a signal from the controller.
  • the method according to the invention is characterised in that a signal is transmitted from the controller to the forming unit for adjusting and/or to checking the quality parameters of the embossing on the tubes.
  • the method according to the invention is characterised in that the measurement of the pressure force of the tube on the sensor is carried out by means of a strain gauge, and the front edge of the tube abuts against the strain gauge.
  • An advantage of the invention is an easy way to control the quality of physical parameters of a telescopic straw constituting the quality of the telescopic connection, in particular the diameter of the tubes and the height and depth of the embossing on the tubes, by measuring the force required to overcome the resistance occurring when folding or unfolding the straw. Furthermore, with the described apparatus, it is possible to take measurements during the straw assembling process in real time and, on the basis of measured values, to carry out a quick adjustment of the machine settings if required. Another advantage of the invention is the possibility of checking the tightness of the telescopic straw's locking latch without the need of destroying the straw.
  • Fig. 1 shows a telescopic tube assembling apparatus in a side view
  • Fig. 2 shows the telescopic tube assembling apparatus in a top view
  • Fig. 3 shows the telescopic tube assembling apparatus in a bottom view in the first embodiment
  • Fig. 4 shows the telescopic tube assembling apparatus in a bottom view in the second embodiment
  • Fig. 5 shows the telescopic tube assembling apparatus in a bottom view in another embodiment
  • Fig. 6 shows the process of displacing a tube in a seat by means of a roller
  • Fig. 7 shows the process of displacing a tube in the seat by means of the roller in the final stage
  • Fig. 8 shows the process of displacing the tube in the seat by means of pushers in the first position
  • Fig. 9 shows the process of displacing the tube in the seat by means of pushers in the second position
  • Fig. 10 shows a diagram of the tube pressure force on the sensor in the axial direction
  • Fig. 11 shows the tubes before assembling in a cross-sectional view
  • Fig. 12 shows the process of assembling the telescopic straw in the first stage
  • Fig. 13 shows the process of assembling the telescopic straw in the second stage
  • Fig. 14 shows the process of assembling the telescopic straw in the next stage
  • Fig. 15 shows the process of assembling the telescopic straw in the next stage
  • Fig. 16 shows the process of assembling the telescopic straw in the next stage
  • Fig. 17 shows the process of assembling the telescopic straw in the next stage
  • Fig. 18 shows the process of assembling the telescopic straw in the next stage
  • Fig. 19 shows the process of assembling the telescopic straw in the final stage.
  • Fig. 1 shows an apparatus 1 for assembling telescopic straws 40 in a side view.
  • the apparatus comprises a hopper 2, 3 for supplying tubes of types A and B, the tubes A being generally longer and having an outer diameter smaller than the inner diameter of the tubes B. Furthermore, one end of the tube A may be bevelled at an angle, preferably an acute angle.
  • a drum conveyor 4 having seats 5, 6 on its outer circumferential surface is shown. It is possible to carry out such an embodiment wherein a belt or chain conveyor with seats situated on the working surface conveying individually, parallel to each other, one after another, longitudinally aligned pairs of the tubes A and B will be used.
  • the hoppers 2 and 3 are placed above the conveyor 4, tangentially to its working surface, so that during the rotation of the conveyor 4, the tubes A and B are picked up from the hoppers 2 and 3 into the seats 5, 6.
  • the tube A placed in the seat 5 has its bevelled end directed towards the tube B which is coaxially aligned with it and placed in the adjacent seat 6, the tubes being conveyed in pairs, transversely to the conveying direction.
  • the tubes A and B are pushed apart towards the lateral edges of the conveyor 4 by means of a assembling unit 18 where they are placed onto mandrels 9, 10 forming a telescopic straw lock 40, as shown in more detail in the following figures.
  • Telescopic straws 40 thus formed are transferred to a receiving apparatus 41 , for example a conveyor transferring the telescopic straws 40 to a packaging machine.
  • Fig. 2 shows the apparatus for assembling the telescopic straws 40 according to the invention in the first embodiment in a top view.
  • the tubes A and B are picked up from the hoppers 2 and 3, respectively, into the seats 5 and 6 arranged on the working surface of the conveyor 4.
  • the tubes may be picked up from the hopper by means of vacuum supplied to the seats 5 and 6 which will be deactivated in the operating area of the assembling unit 18.
  • the assembling unit 18 in this embodiment consists of two rollers 19 and 20 which are arranged tangentially to the circumferential surface of the conveyor 4 in such a way that the working surfaces of the rollers are in contact with the tubes situated in the seats 5, 6. It is also possible to carry out an embodiment wherein the assembling unit 18 will be in the form of strips, at least partially winding around the circumference of the conveyor 4 and remaining in contact with the conveyed tubes A and B.
  • the rollers 19 and 20 are arranged substantially perpendicular to the axis X of the conveyor 4 and the conveyed tubes A, B. It is also possible to work out an embodiment wherein the rollers 19, 20 will be positioned at an angle to the axis X of the conveyor 4.
  • Each of the rollers 19 and 20 has its own drive (not shown in the figure) which puts the rollers 19, 20 into a rotational motion, whereas the roller 19 makes a rotational movement causing the tube A to move towards the first stop element 16, and the roller 20 makes a rotational movement causing the tube B to move towards the second stop element 17.
  • the rollers 19 and 20, by making the rotational movement, cause the tubes A and B to be put into an axial motion towards the flanges 16 and 17.
  • the conveyor 4 makes a rotational movement in the direction R, which causes the tubes A and B to make an additional rotational movement when making the axial movement forced by the rotation of the rollers 19 and 20, as shown in Fig. 2.
  • the rotational movement of the rollers 19 and 20 is adjustable, which allows precise moving of the tubes A and B in the seats of the conveyor 4 so that the tubes A, B are correctly placed on the forming mandrels 9, 10 when they exit from below the contact area of the assembling unit 18.
  • the apparatus 1 can be further provided with sensors 31 for checking the presence of the tube on the forming mandrels 9, 10. This is aimed at eliminating such situation where the tube is not placed onto the forming mandrel or is incorrectly placed, for example it is not pressed against the stop element 16, 17, which results in a locking structure being made at a wrong place on the tube. If the lack of the tube or its incorrect placing on the mandrel is detected, the sensors 31 send a signal to the controller 34 which then stops the operation of the apparatus 1 .
  • each forming mandrel 9, 10 can be put into rotational motion by means of a drive unit which is not shown in the figure.
  • At least one notch 23 is arranged on the outer circumferential surface of the forming roller 12 which presses the tube B against the forming mandrel 10.
  • the forming roller 12 is made to rotate by means of a drive, while the forming mandrel 10 may rotate, powered by a drive (not shown), in the opposite direction to the rotation of the roller 12.
  • the forming roller 12 is arranged with respect to the mandrel 10 in such a way that the notch 23 presses the tube B locally into the groove 24 of the forming mandrel 10 thus making an embossing 28 on the tube B towards its inner surface, as shown in more detail in the following figures.
  • at least two grooves 24 are arranged on the circumferential surface of the forming mandrel 10.
  • the forming of embossing of the locking latch on the tube A is carried out.
  • the tube A Once the tube A has been placed onto the forming mandrel 9, it is pressed against the mandrel 9 from the outside by the forming roller 11 .
  • at least two grooves 25 are arranged next to each other.
  • the forming roller 11 is made to rotate by means of a drive (not shown).
  • the forming mandrel 9 may rotate in the opposite direction to the rotation of the roller 11 .
  • the rotation of the forming mandrel 9 may be assisted by a drive (not shown).
  • the forming roller 11 On the outer circumferential surface of the forming mandrel 9, there is arranged at least one notch 26.
  • the forming roller 11 is arranged with respect to the mandrel 9 in such a way that the notch 26 presses the tube A locally into the groove 25 of the forming roller 11 thus making an embossing 29 on the tube A towards its outer surface.
  • at least two notches 26 are arranged on the circumferential surface of the forming mandrel 9. It is also possible to carry out such an embodiment of the forming unit 7, 8 wherein the forming rollers 11 , 12 or the forming mandrels 9, 10 do not have a rotational drive.
  • the forming roller 11 , 12 is rotatably driven by an external drive, its rotational movement, the contact with the tube A, B placed on the forming mandrel 9, 10 and the friction occurring between them will cause putting the forming mandrel 9, 10 with the tube A, B placed on it in rotational motion.
  • each of the forming units 7, 8 may have its own adjusting unit (not shown in the fig.), which can vary the pressure of the roll 11 , 12 against the forming mandrel 9, 10 depending on the result of the measurement obtained during the quality control, for example to increase or decrease the height of the embossing 28, 29 formed on the tube A, B.
  • the displacing element 13 is in the form of a conical roller 14 having a concave working surface, however, it may also have a flat working surface or be in the form of a belt winding at least partially around the outer surface of the conveyor so that, remaining in contact with the conveyed tubes A, it is rotated in the direction Ri by means of driving units and will move the tubes A longitudinally in the groove 5, 6.
  • the tubes A subjected to the action of the displacing element 13 are pulled off the forming mandrels 9 and displaced axially longitudinally in the seats 5, 6 from the stop element 16 of the conveyor 4 towards the tube B.
  • the tubes A also make a rotational movement about their longitudinal axis.
  • the roller 14 may have different lengths of the working surface.
  • working surface means the lateral surface of the roller 14 which is in contact with the tube A and causes its rotation and/or longitudinal axial movement.
  • the tube A must be displaced by such a distance that it can be inserted at least partially into the tube B.
  • the tube B is positioned in the seat 6 so that its front edge 33 is in contact with the sensor 30 which is positioned, at least partially, in the inside diameter of the seat 6, between the tube B and the stop element 17 adapted to block the longitudinal movement of the outer tube B.
  • the sensor 30 may be a strain gauge sensor, a measuring matrix, a force transducer or any other apparatus for measuring the pressure force, and may be placed on the surface of the stop element 17 or may itself constitute the stop element 17.
  • the sensor 30 measures the pressure force on its surface exerted by the front edge 33 of the tube B in the axial direction when the tube A is inserted therein.
  • the measurement result is transmitted to the controller 34 which compares the reading of the value from the sensor 30 with at least one preset nominal value.
  • the apparatus is provided with a pressure force measuring sensor 30 adapted to measure the pressure force, in the axial direction, arising during the longitudinal displacement of at least one of the tubes A, B. If the measurement result exceeds the tolerance limits, then the controller 34 sends a signal to the rejecting unit 35 which rejects the defective straw outside the conveyor 4.
  • the rejecting unit 35 in this embodiment, is shown as holes arranged at the bottom of the seats 6 into which, after a signal from the controller 34, compressed air can be supplied, for example, causing the defective straw to be blown out of the seat 6 of the conveyor 4 to the outside.
  • the controller 34 upon receiving the measurement from the sensor 30, can send a signal to the forming unit 7, 8 to vary the quality parameters of the formed embossing 28, 29 on the tubes A, B. For example, it can increase or decrease the pressure force of the forming rollers 11 , 12 on the tubes A, B placed on the forming mandrels 9, 10 so as to increase or decrease the height I depth of the embossing.
  • the adjustment of the quality parameters of the formed embossing 28, 29 can be made until the desired measurement values of the sensor 30 on the subsequent tubes A, B are reached.
  • the apparatus 1 may be further provided with sensors 32 for checking the presence of the tube A, B on the forming mandrels 9, 10. This is to eliminate a situation where the tube, after forming the embossing, is not pulled off the mandrel 9, 10 by the displacing element 13, resulting in lacking space on the mandrel 9, 10 for another tube and incorrect assembling of the telescopic straw 40.
  • the sensors 32 send a signal to the controller 34 which then stops the operation of the apparatus 1 .
  • Fig. 4 shows an apparatus 1 for assembling the telescopic straws 40 in a bottom view in the second embodiment wherein the displacing element 13 in the form of the roller 14 displaces the tubes B in the seats 6, 5 from the stop element 17 of the conveyor 4 towards the tubes A, by making a rotational movement with the roller 14 in the direction R2 so that the tubes A are inserted into the displaced tube B.
  • the sensor 30 measuring the pressure force is arranged on the stop element 16 in the area of the seat 5 on the side of the tube A, and is adapted to block the longitudinal movement of the inner tube A.
  • the sensor 30 may also be arranged in the area of the stop element 16, 17 on the side of the seat 5, 6.
  • the displacing element 13 will be in the form of pushers 21 , displacing the tubes A, B longitudinally in the seats 5, 6, as shown in Fig. 5.
  • the pushers 21 in the form of long rod-like elements are inserted into the seat 5 in which the tubes A are conveyed.
  • the sliding movement of the pushers 21 parallel to the axis X of the conveyor 4, may be forced by a cam (not shown in fig.), by actuators or by any other driving element 22 known in the state of the art, forcing the sliding or reciprocating movement.
  • the length to which the pusher 21 is inserted into the seat 5 and into the seat 6 depends on the length of the tube A, the length of the tube B, the distance between the tubes A and B and on how deep the tube A is to be inserted into the tube B. It is preferable to insert the tube A into the tube B to such a depth that the front surface of the tube A, which is in contact with the pusher 21 , is inside the tube B. With this internal positioning of the tube A in the tube B, it will be possible to make a crease in the front edge of the tube B and block the possibility of the tube A being accidentally pushed out of the tube B.
  • the apparatus 1 for assembling the telescopic straws 40 composed of the tubes A, B provided with the embossing 28, 29. Then, the apparatus 1 will be able to operate without the assembling unit 18 and the forming units 7, 8, and the tubes A, B with already formed locking structure in the form of the embossing 28, 29 will be supplied to the tray 2, 3 and then picked up from the trays 2, 3 to the seats 5, 6 of the conveyor 4, appropriately oriented and, by means of the displacing element 13, pushed together so as to form the already assembled telescopic straw 40.
  • Fig. 6 shows the process of displacement of the tube A in the seats 5 and 6 towards the tube B, by means of the displacing element 13 in the form of the roller 14. After forming the embossments 28, 29 on the tubes
  • the conveyor 4 makes a rotational movement and brings the roller 14 into contact with the tube A, conveyed in the seat 5.
  • the roller 14 rotates in the direction R1 coming into contact with the tube A and forcing its longitudinal movement towards the tube B.
  • the distance over which the tube A will be moved depends on the time during which the roller 14 is in contact with the tube A and the speed of rotation of the roller 14. The minimum distance is such in which the tube A will be, at least partially, inserted into the tube
  • the tip 15 of the tube A extends beyond the second end of the tube B on the opposite side with respect to the side from which it is inserted, as shown in Fig.7.
  • the second end of the tube B abuts with its edge 33 against the sensor 30 which measures the force with which the tube B presses with its edge 33 against its surface.
  • the apparatus 1 may comprise a rejecting unit 35 adapted to reject defective telescopic straws 40 outside the conveyor 4.
  • the signal from the sensor 30 is transmitted to the controller 34 which, on the basis of previously entered data, compares the result of the measurement with the desired value. If the result of the measurement is outside the limits of set tolerance, the controller 34 can transmit a signal to the rejecting unit 35 (not shown in the figure) which, in response to the signal from the controller 34, rejects the defective straw.
  • Fig. 8 shows the process of displacing the tube A in the seat 5, 6 by means of the displacing element 13 in the form of the pusher 21 in the first position.
  • the pusher 21 by making a sliding movement parallel to the rotational axis X of the conveyor 4 in the direction T, causes a displacement of the tube A in a longitudinal axial direction from the seat 5 to the seat 6 and then into the tube B.
  • the tube A is inserted into the tube B by means of the pusher 21 so that its end 15 protrudes from the tube B.
  • the tube A is inserted into the tube B in such a way that the end 36 of the tube A is positioned inside the tube B, as shown in Fig.9.
  • the pressure force of the tube B with the edge 33 on the sensor 30 arranged on the stop element 17 is measured.
  • the result of the measurement after transmitting to the controller 34 and comparing with the preset value, allows determining the correctness of the embossing 28, 29 which is responsible for the tightness of the connection of the telescopic straw 40.
  • the sensor 30 is arranged on the displacing element 13 at a point where it is in contact with the edge 36 of the tube A being displaced.
  • Fig. 10 shows a graph of the force of pressure of the tube B with its edge 33 on the sensor 30 during the displacement of the tube A relative to the tube B.
  • the nominal measurement value 39 gradually increases as a function of the distance travelled by the tube A.
  • the upper permissible limit 39a and the lower permissible limit 39b are marked by a dashed line. In the case the measurement result from the sensor 30 exceeds the upper limit 39a or the lower limit 39b of measurement at any stage of insertion of the tube A into the tube B, then such straw 40 will be regarded as defective and will be rejected from further production stage.
  • the tube A is inserted with its end 15 into the tube B (Figs.11 -12).
  • the pressure force of tube B on the sensor 30 caused by the resistance created between the tube A and the tube B is low and remains essentially the same along the section C. In the diagram in Fig.10, this value is indicated by the straight line C.
  • the second edge 37b of the tube A shown in Fig.15 comes into contact with the first embossing 28a of the tube B, which is indicated by the point F in the diagram of Fig. 10.
  • a further displacement of the tube A brings the first embossing 29a of the tube A into contact with the inner wall 38 of the tube B at the point G (Fig.16).
  • Fig. 17 shows the contact of the second edge 37b of the tube A with the second embossing 28b of the tube B at the point H.
  • the second embossing 29b of the tube A is inserted into the tube B and comes into contact with its inner wall 38 thus increasing the pressure force on the sensor 30 to the level indicated in the diagram by the point I.
  • a further displacement of the tube A inside the tube B does not substantially increase the pressure force on the sensor 30.
  • the pusher 21 is withdrawn to its initial position outside the seat 5, 6.
  • the telescopic straw 40 formed in this way is transferred to the further production process.
  • This straw manufacturing process ensures that the quality requirements for physical parameters of the telescopic straw 40 and the tightness of the telescopic connection are met.
  • a method of assembling the telescopic straws 40 for the food industry comprises steps wherein: the inner tubes A and the outer tubes B are conveyed in pairs in the seats 5, 6 of the conveyor 4, transversely to the conveying direction, the outer tubes B being longitudinally aligned with the inner tubes A. Furthermore, at least one tube A, B is displaced axially in the seat 5, 6 by varying the mutual position of the tubes A, B by means of the displacing element 13 so that the inner tube A is partly in the outer tube B.
  • the force of pressure in the axial direction of at least one tube A, B on the sensor 30 is measured.
  • the force may be measured continuously.
  • the result of the pressure force measurement result is compared with at least one nominal value 39 in the controller 34.
  • the method according to the invention comprises a step wherein defective straws 40 are rejected from the conveyor 4 by means of the rejecting unit 35 after a signal from the controller 34.
  • a signal from the controller 34 is transmitted to the forming unit 7, 8 to adjust and/or check the quality parameters of the embossing 28, 29 on the tubes A, B.
  • the measurement of the pressure force of the tubes A, B on the sensor 30 is performed by means of a strain gauge, and the front edge 33 of the tube A, B abuts against the strain gauge.
  • Stop element A Tube
  • Pushers R1 Direction of rotation of tapered roller

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Abstract

L'objet de la demande porte sur un appareil d'assemblage de pailles télescopiques (40) pour l'industrie alimentaire se composant de tubes (A, B), comprenant : un transporteur (4) pourvu de sièges (5, 6) conçus pour transporter des tubes internes (A) et des tubes externes (B) transversalement à la direction de transport, les tubes (A, B) étant transportés par paires dans les sièges (5, 6) et les tubes internes (A) étant alignés longitudinalement avec les tubes externes (B), un élément de déplacement (13) conçu pour faire varier la position mutuelle des tubes (A, B) de telle sorte que le tube interne (A) est partiellement dans le tube externe (B). L'appareil est caractérisé en ce qu'il est pourvu d'un capteur de mesure de force de pression (30) conçu pour mesurer la force de pression, dans la direction axiale, survenant pendant le déplacement longitudinal d'au moins l'un des tubes (A, B). L'objet de la demande porte également sur un procédé d'assemblage des pailles télescopiques.
EP23848707.8A 2022-12-19 2023-12-18 Procédé et appareil d'assemblage de pailles télescopiques Pending EP4638114A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL443183A PL246792B1 (pl) 2022-12-19 2022-12-19 Sposób i urządzenie do składania słomek teleskopowych
PCT/IB2023/062871 WO2024134453A1 (fr) 2022-12-19 2023-12-18 Procédé et appareil d'assemblage de pailles télescopiques

Publications (1)

Publication Number Publication Date
EP4638114A1 true EP4638114A1 (fr) 2025-10-29

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EP23848707.8A Pending EP4638114A1 (fr) 2022-12-19 2023-12-18 Procédé et appareil d'assemblage de pailles télescopiques

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EP (1) EP4638114A1 (fr)
PL (1) PL246792B1 (fr)
WO (1) WO2024134453A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6013614A (ja) * 1983-06-30 1985-01-24 昭和電工株式会社 棒状体の包装装置
JP3751094B2 (ja) * 1996-11-20 2006-03-01 東洋キャップ製造株式会社 組立装置を備えたダブルストロー製造装置
JPH10156941A (ja) * 1996-11-27 1998-06-16 Toyo Cap Kk 間接加熱による成形装置を備えた飲料用ストロー製造装置
KR102291705B1 (ko) * 2019-09-25 2021-08-20 주식회사 서일 신축형 종이 빨대의 제조장치 및 방법
PL241940B1 (pl) * 2020-04-28 2022-12-27 Int Tobacco Machinery Poland Spolka Z Ograniczona Odpowiedzialnoscia Urządzenie do montażu rurek teleskopowych oraz sposób montażu rurek teleskopowych
PL243147B1 (pl) * 2021-01-18 2023-07-03 Int Tobacco Machinery Poland Spolka Z Ograniczona Odpowiedzialnoscia Urządzenie składające i układ do składania papierowych rurek teleskopowych

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PL443183A1 (pl) 2024-06-24
WO2024134453A1 (fr) 2024-06-27
PL246792B1 (pl) 2025-03-10

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