JP2010208719A - Work transfer device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a work transfer device with a simple structure capable of enhancing treatment ability by canceling waste of action, reducing generation of failure, being manufactured at low cost and being constituted to a small size. <P>SOLUTION: A pair of work retaining units 42 having a work retaining means 41 for retaining a cup beverage 1 as a work is provided with a pair of work retaining units 42 provided at both sides while clamping a rotation shaft 43; and a position switching means 44 for transferring one work retaining unit 42 from a receiving position of a cup vessel to a giving position by rotation motion making the rotation shaft 43 as a center and linear motion in an axial direction of the rotation shaft, transferring the other work retaining unit 42 from the giving position of the cup beverage to the receiving position and alternately position-switching both work retaining units 42 to the receiving position and the giving position. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a workpiece transfer device that can be suitably used to load and transfer a work such as a cup beverage formed by filling a soft drink such as coffee in a cup-shaped container into a storage box.

  As a workpiece transfer device of a boxing device for packing a workpiece such as a cup beverage, a workpiece holding means for holding a plurality of workpieces by suction or clamping, a lifting means for raising and lowering the workpiece holding means, and a workpiece holding position for receiving the workpiece And a transfer means for transferring substantially horizontally across the delivery position are widely adopted. In this workpiece transfer apparatus, first, a plurality of workpieces transferred to the receiving position are held by the workpiece holding means, then lifted together with the workpiece holding means by the lifting means, and then received together with the workpiece holding means by the transferring means. The workpiece is transferred from the position to the upper position of the delivery position, and then lowered to the lowered position together with the workpiece holding means, and a plurality of workpieces are loaded and transferred into the storage box arranged at the delivery position (for example, Patent Documents 1 and 2).

Japanese Patent Laid-Open No. 11-91704 JP 2000-168707 A

  By the way, in the boxing apparatus described in Patent Documents 1 and 2, after loading and transferring a plurality of workpieces in the storage box, the workpiece is not held in order to pack the next workpiece, that is, an empty state. Therefore, it is necessary to transfer the work holding means to the receiving position, and there is a problem that the transfer processing capacity of the work is reduced accordingly. In addition, such a workpiece transfer apparatus that transfers a workpiece only by a linear motion by the lifting means and the transfer means has a problem that it is large in size and complicated in structure and easily breaks down.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a workpiece transfer device that can improve processing capacity by reducing waste of operation, reduce the occurrence of failure, can be manufactured at a low cost, and can be manufactured in a small size. .

  The workpiece transfer device according to the present invention is a set of workpiece holding units having workpiece holding means for holding a workpiece, the set of workpiece holding units provided on both sides of the rotating shaft, One workpiece holding unit is transferred from the workpiece receiving position to the delivery position by the rotational movement around the rotation axis and the linear movement of the rotation axis in the axial direction, and the other workpiece holding unit is moved from the workpiece delivery position. A position switching means for transferring the workpieces to the receiving position and alternately switching the workpiece holding unit between the receiving position and the delivery position, while the workpiece is being received by one workpiece holding unit, The workpiece transfer operation is performed by the workpiece holding unit.

  In this workpiece transfer device, the workpiece at the receiving position is held by the workpiece holding unit, the workpiece holding unit is transferred from the receiving position to the delivery position by the position switching means, and the workpiece held by the workpiece holding unit is moved to the delivery position. Although a pair of work holding units are provided on both sides of the rotating shaft, while the work is being transferred from the receiving position to the delivery position by one of the work holding units, It is possible to transfer the workpiece holding unit from the delivery position to the receiving position in an empty state, eliminating the waste of operation when returning the workpiece holding unit to the receiving position, and greatly increasing the processing speed of the workpiece transfer work. Can be increased. In addition, since the workpiece can be transferred by moving the workpiece holding unit by the rotation motion around the rotation axis and the linear motion in the axial direction of the rotation shaft, the workpiece transfer device that transfers the workpiece only by the linear motion. Compared to the above, the configuration of the position switching means can be simplified, the manufacturing cost can be reduced, the occurrence of failure can be reduced, and the position switching means can be made compact.

  Here, it is preferable to provide a plurality of workpiece holding means in the workpiece holding unit. With this configuration, a plurality of workpieces can be transferred at the same time, which is preferable for improving transfer efficiency. For example, when a plurality of workpieces are sequentially packed in a storage box or the like, a number of workpiece holding means corresponding to the number of workpieces to be packed in one storage box are provided in the workpiece holding unit, and the plurality of workpiece holding units are provided in the workpiece holding unit. It is possible to increase the efficiency of the transfer operation by simultaneously holding the workpieces and simultaneously loading and transferring the plurality of workpieces to the storage box at the delivery position. However, it is also possible to configure such that a plurality of workpieces are loaded and transferred to the storage box in a plurality of times.

  Receiving a plurality of workpieces transferred simultaneously by the workpiece holding unit while holding the middle portions in the height direction of each workpiece so that the plurality of workpieces are arranged at set intervals at the receiving position. It is a preferred embodiment to provide a screw conveyor that moves to a position. In this case, a plurality of workpieces can be efficiently transferred to the receiving position by the screw conveyor, and the interval between the workpieces at the receiving position can be accurately set to an appropriate interval by the screw conveyor. For this reason, when holding a workpiece | work by a workpiece | work holding means, the malfunction that a workpiece | work is damaged can be prevented by the positional relationship of a workpiece | work holding means and a workpiece | work shifting | deviating.

  It is also preferable that a belt conveyor for transferring the plurality of workpieces to the receiving position while supporting the plurality of workpieces from the lower side is provided in the screw conveyor, and the transfer speed by the belt conveyor is set faster than the transfer speed by the screw conveyor. It is. The workpiece can be transferred to the receiving position only by the screw conveyor, but the workpiece may fall down due to the frictional resistance of the workpiece against the transfer surface, so the screw conveyor and belt conveyor are used together. It is preferable to transport it. In addition, the transfer speed of the belt conveyor can be set to be the same as that of the screw conveyor. However, by setting it slightly faster, it becomes possible to hold the workpiece reliably with respect to the spiral groove of the screw conveyor. It is possible to prevent the workpiece from being poorly held.

  It is also a preferred embodiment that the position switching means is provided with cam means for converting rotational motion into linear motion in order to linearly move the rotary shaft in the axial direction. Although it is possible to reciprocate linearly the rotating shaft with a cylinder, etc., it is necessary to reciprocate the rotating shaft in synchronism with the rotation of the rotating shaft. It is preferable to use a thin film because it can be manufactured at low cost and the reliability of the operation becomes high.

  It is also a preferred embodiment that the position switching means is provided with a transfer restricting means for restricting the transfer of the work holding unit when the transfer resistance of the work holding unit exceeds a set value. With this configuration, when the workpiece is transferred by the workpiece holding unit, for example, when the workpiece holding unit comes into contact with a foreign object, the transfer of the workpiece holding unit is restricted by the transfer restriction unit. It is preferable because an excessive load is prevented from acting and damage to the workpiece transfer device can be prevented.

  As the workpiece holding means, a plurality of holding claws that detachably hold the workpiece, an opening / closing means that simultaneously opens and closes the plurality of holding claws, and a lock means that mechanically locks the plurality of holding claws to a workpiece holding state. Can be used. Although it is possible to employ a work holding means configured to hold the work by suction, if there is no part that can be sucked at an appropriate place, the work is held by a plurality of holding claws. A holding means can be employed. In addition, when such a workpiece holding means is adopted, in order to reliably prevent the held workpiece from falling off, one having a locking means for mechanically locking a plurality of holding claws to the workpiece holding state is adopted. It is preferable to do.

  A packaging box in which the workpiece is a cup-shaped container, a plurality of containers stored in one packaging box are transferred to a receiving position, the plurality of containers are held by a workpiece holding unit, and are transferred to a delivery position. It is a preferred embodiment to load and transfer inside. The workpiece transfer device of the present invention can be suitably applied to such a container boxing device.

  According to the workpiece transfer apparatus of the first aspect, since the configuration in which one set of workpiece holding units is provided on both sides of the rotation shaft is adopted, the receiving position is transferred to the delivery position by one workpiece holding unit. While transferring the workpiece, it becomes possible to transfer the other workpiece holding unit from the delivery position to the receiving position in an empty state, eliminating waste of operation when returning the workpiece holding unit to the receiving position, The processing speed of the workpiece transfer work can be greatly increased. In addition, since the workpiece can be transferred by moving the workpiece holding unit by the rotation motion around the rotation axis and the linear motion in the axial direction of the rotation shaft, the workpiece transfer device that transfers the workpiece only by the linear motion. Compared to the above, the configuration of the position switching means can be simplified, the manufacturing cost can be reduced, the occurrence of failure can be reduced, and the position switching means can be made compact.

Explanatory drawing of the downstream part of the production line for cup beverages Plan view of the main part of the boxing machine Front view of workpiece transfer means Front view of box transport means Sectional view taken along the line V-V in Fig. 2 with the belt conveyor removed. Front view of position switching means IIV arrow view of FIG. Front view of part of the work holding unit Side view of work holding unit Bottom view of work holding means (A) of the inner lever and outer lever is a plan view, and (b) is a front view.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of a downstream part of a production line of a cup beverage 1 in which a cup-like container is filled with a soft drink such as coffee. The cup beverage 1 in which a soft drink is filled and a sealing film is attached to an opening is shown. While being transported along the production line L, the upper lid 2 is fitted by the lid fitting device 10 at the downstream portion of the production line L, and the expiration date is printed on the side surface of the cup-shaped container by the printing device 11 and pasted. The stroking device 12 attaches the strut to the side surface of the cup-shaped container. Then, it is divided into two lines of transport lines La and Lb and conveyed to the boxing device 13, and a total of ten cup beverages 1 arranged in 5 rows × 2 columns by the boxing device 13 as one set, from a cardboard box or the like The storage boxes 3 are sequentially boxed. Reference numeral 14 denotes a supply adjusting device that temporarily stores the cup beverage 1 and adjusts the supply of the cup beverage 1 to the boxing device 13. Further, reference numeral 15 is a discharge line for discharging NG products such as defective sticking of struts, and reference numeral 16 is a discharge line for discharging sample products.

  The present embodiment is a case where the workpiece transfer device according to the present invention is applied to the boxing device 13 for packing the cup beverage 1 as a workpiece in the storage box 3 in such a production line L of the cup beverage 1. It is. However, the workpiece transfer device according to the present invention can be applied to a boxing device 13 for workpieces made of various articles other than the cup beverage 1, and can also be applied to a workpiece transfer device other than boxing.

  As shown in FIGS. 1 to 4, the boxing device 13 constitutes two lines of transport lines La and Lb that sequentially transfer the cup beverage 1 in two rows from the supply adjustment device 14 to the receiving position P1 of the boxing device 13. A pair of workpiece transfer means 20, a box transfer means 30 for sequentially transferring the storage box 3 to a delivery position P2 arranged adjacent to the front side of the reception position P1, and a transfer to the reception position P1 in two rows. A workpiece transfer means 40 is provided for loading and transferring a total of 10 cup beverages 1 arranged in two rows and columns into the storage box 3 transferred to the delivery position P2. However, the number and arrangement of the cup beverages 1 arranged at the receiving position P1 can be arbitrarily set according to the number and arrangement of the cup beverages 1 loaded in the storage box 3. In addition, the code | symbol 3a is a loading hole formed in the insole of the storage box 3, and by loading the cup beverage 1 into this loading hole 3a, 10 cups with good stability with respect to the storage box 3 It is comprised so that the drink 1 can be boxed.

  As shown in FIGS. 1 to 3 and 5, the workpiece transfer means 20 includes two belt conveyors 21 provided before and after extending from the supply adjustment device 14 to the receiving position P <b> 1 of the boxing device 13, and both belt conveyors 21. And a screw conveyor 22 provided above the receiving position P1.

  The belt conveyor 21 has a known configuration including an endless loop belt 24 that is stretched between a pair of pulleys 23 and driven to circulate. Above the belt conveyor 21, an upper guide rod 25 that restricts the upward movement of the cup beverage 1 and the front and rear sides of the middle portion of the cup beverage 1 in the height direction are arranged so A pair of front and rear side guide rods 26 to be prevented are provided along the belt conveyor 21 so that the cup beverage 1 is sequentially transferred while being guided by the upper guide rod 25 and the side guide rod 26. Has been.

  At the receiving position P1, a pair of front and rear screw conveyors 22 are provided substantially parallel to each other above the front and rear belt conveyors 21, and a middle portion in the height direction of the cup beverage 1 is transferred between the screw conveyors 22. A guide rod 27 for guiding in the direction is provided. A spiral groove 22a that can hold the middle portion of the cup beverage 1 in the height direction is formed on the outer periphery of the screw conveyor 22, and the cup beverage 1 transferred by the belt conveyor 21 is screw screw conveyor immediately before the receiving position P1. The belt 22 is held between the spiral groove 22a and the guide rod 27, and is transferred to the receiving position P1 by the belt conveyor 21 and the screw conveyor 22 at set intervals while being adjusted in the transfer direction by the screw conveyor 22. Further, the front and rear belt conveyors 21 and the front and rear screw conveyors 22 are driven synchronously, and five cup beverages 1 are sequentially transferred to the receiving position P1 in two rows in the front and rear. Reference numeral 28 denotes driving means for driving the front and rear screw conveyors 22 to rotate synchronously.

  The transfer speed by the belt conveyor 21 is set to be slightly higher than the transfer speed by the screw conveyor 22, and is configured so that the cup beverage 1 can be reliably held in the spiral groove 22a of the screw conveyor 22 and transferred to the receiving position P1. Yes.

  As shown in FIGS. 1, 2, and 4, the box transfer means 30 includes a belt conveyor having two endless loop-like belts 32 stretched between a pair of pulleys 31 and driven to circulate, and a belt An interval setting tool 33 provided in a protruding shape on the upper side of the belt 32 is provided so that a constant interval is formed between the storage boxes 3 transported by 32. The box transfer means 30 is arranged substantially in parallel with the work transfer means 20 on the front side of the work transfer means 20. In this box transfer means 30, every time the cup beverage 1 is transferred and loaded into the storage box 3, a new empty storage box 3 is sequentially supplied to the delivery position P2, and the cup beverage 1 is transferred (packed). The container 3 that has been completed is transferred to the outside of the delivery position P2. In the storage box 3, ten cup beverages 1 are stored in an array of 5 rows and 2 columns.

  The workpiece transfer means 40 is a set of workpiece holding units 42 having a workpiece holding means 41 for holding the cup beverage 1, and a set of workpiece holding units 42 provided on both sides of the rotating shaft 43. The workpiece holding unit 42 is transferred from the receiving position P1 of the cup beverage 1 to the delivery position P2 by the rotational motion around the rotational shaft 43 and the linear motion of the rotational shaft 43 in the axial direction, and the other A position switching means 44 for transferring the work holding unit 42 from the delivery position P2 of the cup beverage 1 to the receiving position P1 and switching the positions of the two work holding units 42 alternately between the receiving position P1 and the delivery position P2. While the work holding unit 42 is receiving the cup beverage 1, the other work holding unit 42 delivers the cup beverage 1. It is intended to perform the operation.

  As shown in FIGS. 2 and 6 to 9, a guide sleeve 45 is erected and fixed on the machine frame of the boxing device 13 between the receiving position P <b> 1 and the delivery position P <b> 2, and the rotary shaft 43 is rotatable on the guide sleeve 45. Further, it is guided and supported so as to be movable up and down at a certain height. At the upper end portion of the rotating shaft 43 protruding upward from the guide sleeve 45, an arm 46 extending to both sides of the rotating shaft 43 is provided, and the work holding unit 42 is fixedly supported at the end portions of both arms 46, respectively. . Specifically, a base plate 47 of a work holding unit 42 extending substantially horizontally from the arm 46 to both sides is fixed to an end portion of the arm 46, and the cup beverage 1 to be loaded in the storage box 3 is arranged on the base plate 47. 10 workpiece holding means 41 are provided in a 5 × 2 array. An air cylinder 48 is provided on the base plate 47 between two adjacent rows of workpiece holding means 41 with the piston rod 48a facing upward, and two adjacent workpiece holding means 41 are provided at the upper end of the piston rod 48a. Operation arms 49 for opening and closing are respectively fixed, and ten work holding means 41 can be simultaneously driven by these five air cylinders 48.

  The work holding means 41 will be described. As shown in FIGS. 6 to 9, the guide sleeve 50 is erected and fixed on the upper surface side of the base plate 47 at the position where the work holding means 41 is disposed. The rod 51 passes through the base plate 47 and is inserted so as to be movable in the vertical direction. A support member 52 is fixed to the lower surface side of the base plate 47 at the position where the work holding means 41 is disposed, and four holding claws 53 that extend downward extend around the operation rod 51 around the support member 52. Provided at regular intervals in the direction, the upper ends of the holding claws 53 are rotatably supported by the support member 52 via pin members 54. An operation piece 55 disposed between the base end portions (upper end portions) of the four holding claws 53 is fixed to the lower end portion of the operation rod 51, and the operation rod 51 is moved upward by a spring member 56 provided on the upper end portion thereof. It is energized. A pair of upper and lower protrusions 53a and 53b are formed on the surface of the holding claw 53 facing the operation piece 55. When the operation rod 51 is operated upward by the air cylinder 48 via the operation arm 49, the operation piece 55 is moved upward. When the operating rod 51 is operated downward, the operation piece 55 comes into contact with the lower protrusion 53b. The four holding claws 53 are configured so as to be in an open state illustrated by phantom lines in FIG. At the lower end portion of the holding claw 53, a key claw-like claw portion 53c is formed so as to protrude toward the center of the four holding claws 53, and the claw portions 53c of the four holding claws 53 are connected to the cup beverage 1. The cup beverage 1 can be held by the work holding means 41 by being engaged with the upper part of the side surface. Further, in the closed state, even if the air cylinder 48 is stopped, the operation rod 51 is biased upward by the biasing force of the spring member 56, so that the engagement between the operation piece 55 and the upper protrusion 53a is mechanical. The cup beverage 1 held by the four holding claws 53 is prevented from being inadvertently dropped. As shown in FIG. 10, the operation piece 55 is formed in a square cross section, and the protrusions 53a and 53b are in surface contact with each other, so that the operation piece 55 is worn by the sliding portion between the operation piece 55 and the protrusions 53a and 53b. Durability degradation is prevented. The locking means for mechanically locking the four holding claws 53 to the workpiece holding state includes a spring member 56, an operation piece 55, and the like.

  The position switching means 44 will be described. As shown in FIGS. 2, 6, and 7, the lower end portion of the rotation shaft 43 is inserted through the guide sleeve 45 and protrudes downward, and the rotation that protrudes downward from the guide sleeve 45. A pulley 57 is fixed to the upper portion of the lower end portion of the shaft 43, and a timing belt 58 that rotates synchronously with the screw conveyor 22 is stretched around the pulley 57.

  In order to make the rotary shaft 43 reciprocate linearly in the vertical direction, cam means 60 for converting the rotary motion into the reciprocating linear motion is provided. The cam means 60 will be described. As shown in FIGS. 6, 7, and 11, a pair of support plates 61 are provided on the side of the rotating shaft 43 protruding downward from the guide sleeve 45 downward from the machine frame. The cam plate 62 is supported between the support plates 61 so as to be rotatable about the support shaft 63. A timing belt 65 is stretched on a pulley 64 fixed to the support shaft 63. It is configured to rotate in conjunction with the rotating shaft 43. A pivot shaft 66 is installed between the support plates 61 on the side of the pivot shaft 63, and a pair of inner levers 67 and a pair of outer levers 68 disposed outside the pivot shaft 66 are rotatable. A cam roller 69 is rotatably supported between the middle portions of the inner lever 67 and is in contact with the outer periphery of the cam plate 62. The outer lever 68 protrudes outward from the distal ends of the inner levers 67. A receiving plate abutting from the lower side is fixed to the vicinity of the front end of the head, and the outer lever 68 is configured to be operated upward by the inner lever 67 through the receiving plate. A pair of upper and lower flanges 43a are formed on the rotary shaft 43 below the pulley 57, and an upper and lower driving roller 71 fitted between the upper and lower flanges 43a is rotatable at the distal end of the outer lever 68. When the outer lever 68 is pivoted about the pivot shaft 66 and the tip of the outer lever 68 moves up and down, the rotary shaft is rotated via the vertical driving roller 71 and the flange 43a. 43 is configured to reciprocate in the vertical direction.

  In the position switching means 44, the cam plate 62 rotates to cause the tip of the inner lever 67 to reciprocate in the vertical direction about the pivot shaft 66 via the cam roller 69. The tip of the outer lever 68 reciprocates in the vertical direction around the pivot shaft 66 together with the inner lever 67 via the receiving plate 70 at the tip. Then, the rotary shaft 43 is reciprocated in the vertical direction via the outer lever 68, and the work holding unit 42 is reciprocated in the vertical direction across the ascending position illustrated by the solid line and the descending position illustrated by the phantom line in FIG. Will do. In addition, when the work holding unit 42 is moved to the raised position, the rotation shaft 43 rotates 180 °, so that one work holding unit 42 moves from the position above the receiving position P1 of the cup beverage 1 to the position above the delivery position P2. While being transferred to the position, the other work holding unit 42 is transferred from the position above the delivery position P2 of the cup beverage 1 to the position above the receiving position P1. Then, after switching the position of the work holding unit 42 around the rotation shaft 43, the work holding unit 42 is lowered to the lowered position, and one work holding unit 42 is transferred from the receiving position P1 to the delivery position P2. The other work holding unit 42 is transferred from the delivery position P2 to the reception position P1. In addition, when a movement resistance downward of the work holding unit 42 becomes equal to or larger than a set value due to a foreign object or the like sandwiched under the work holding unit 42, the receiving plate 70 is moved to the outside as shown by a virtual line in FIG. By moving away from the lever 68 and rotating only the inner lever 67 downward, an unreasonable force is prevented from acting on the work holding means 41. Reference numeral 72 denotes a sensor that detects that the inner lever 67 has rotated downward relative to the outer lever 68. The sensor 72 detects that a foreign object or the like is caught by the sensor 72. While stopping, it is comprised so that an operator may be warned.

  When the cup beverage 1 is boxed by the boxing device 13, first, 10 cup beverages 1 are sequentially transferred to the receiving position P1 by the work transfer means 20 in 5 rows and 2 columns, and the storage box 3 is placed at the delivery position P2. Transport. Next, the workpiece holding unit 42 is moved to the lowered position, and the ten cup beverages 1 of the ten workpiece holding means 41 provided on the workpiece holding unit 42 are transferred to the receiving position P1. The ten workpieces are raised together with the workpiece holding unit 42 to the raised position, rotated 180 degrees, then lowered to the lowered position, transferred from the receiving position P1 to the delivery position P2, and delivered to the delivery position. In P2, it is transferred into the storage box 3. Next, the empty work holding unit after boxing the cup drink 1 is moved to the ascending position, rotated 180 degrees, then lowered to the descending position, and the next cup drink 1 transferred to the receiving position is taken as a work piece. The operation of holding the holding means 41 and sequentially transferring to the delivery position in the same manner as described above is repeated, and the cup beverages 1 are sequentially packed in the storage box 3. On the other hand, in this boxing device 13, since a pair of work holding units 42 are provided on both sides of the rotating shaft 43, the cup beverage 1 is transferred from the receiving position P1 to the delivery position P2 by one work holding unit 42. In the meantime, the other work holding unit 42 is transferred from the delivery position P2 to the receiving position P1 in an empty state, and the cup beverage 1 is sequentially packed in the storage box 3 by the two work holding units 42. .

  As described above, the boxing device 13 has a simple configuration in which the work holding units 42 are provided on both sides of the rotating shaft 43, and one of the work holding units 42 is transferred from the delivery position P2 to the receiving position P1. Since the other work holding unit 42 can be transferred from the receiving position P1 to the delivery position P2 by using the dead time, the efficiency of the boxing operation can be greatly improved. Moreover, the cup beverage 1 can be transferred by moving the work holding unit 42 by the rotational motion around the rotational shaft 43 and the linear motion of the rotational shaft 43 in the axial direction, so that the cup beverage 1 can be transferred only by the linear motion. Compared to the workpiece transfer device to be transferred, the configuration of the position switching means 44 can be simplified, the manufacturing cost can be reduced, the occurrence of failure can be reduced, and the position switching means 44 can be made compact. .

  In addition, since the plurality of cup beverages 1 are transferred to the receiving position P1 by the screw conveyor 22, the interval between the cup beverages 1 at the receiving position P1 can be set to an appropriate interval with high accuracy. When the cup is held, the positional relationship between the work holding means 41 and the cup beverage 1 is prevented from deviating, and the work holding means 41 hits the cup beverage 1 to prevent the cup beverage 1 from being damaged. .

DESCRIPTION OF SYMBOLS 1 Cup drink 2 Upper lid 3 Storage box 3a Loading hole 10 Lid fitting apparatus 11 Printing apparatus 12 Adhering apparatus 13 Box filling apparatus 14 Supply adjustment apparatus 15 Discharge line 16 Discharge line 20 Work transfer means 21 Belt conveyor 22 Screw conveyor 22a Spiral groove 23 Pulley 24 Belt 25 Upper guide rod 26 Side guide rod 27 Guide rod 28 Drive means 30 Box transfer means 31 Pulley 32 Belt 33 Interval setting tool 40 Work transfer means 41 Work holding means 42 Work holding unit 43 Rotating shaft 43a Hook 44 Position switching means 45 Guide sleeve 46 Arm 47 Base plate 48 Air cylinder 48a Piston rod 49 Operation arm 50 Guide sleeve 51 Operation rod 52 Support member 53 Holding claw 53a Projection part 53b Projection part 53c Claw part 54 Pin member 55 Top 56 Spring member 57 Pulley 58 Timing belt 60 Cam means 61 Support plate 62 Cam plate 63 Support shaft 64 Pulley 65 Timing belt 66 Pivot shaft 67 Inner lever 68 Outer lever 69 Cam roller 70 Receiving plate 71 Vertical drive roller 72 Sensor P1 delivery position P2 delivery position

Claims (8)

A set of work holding units having work holding means for holding a work, the set of work holding units provided on both sides of the rotating shaft;
One workpiece holding unit is transferred from the workpiece receiving position to the delivery position and the other workpiece holding unit is moved to the workpiece delivery position by the rotational movement around the rotation axis and the linear movement in the axial direction of the rotation axis. A position switching means for transferring the workpiece holding unit to a receiving position and a delivery position alternately,
Have
While the workpiece is being received by one workpiece holding unit, the workpiece is being transferred by the other workpiece holding unit.
A workpiece transfer device characterized by that.   The workpiece transfer apparatus according to claim 1, wherein the workpiece holding unit is provided with a plurality of workpiece holding means.   Receiving a plurality of workpieces transferred simultaneously by the workpiece holding unit while holding the middle portions in the height direction of each workpiece so that the plurality of workpieces are arranged at set intervals at the receiving position. The workpiece transfer apparatus according to claim 2, further comprising a screw conveyor for transferring to a position.   4. The workpiece according to claim 3, wherein a belt conveyor for transferring the plurality of workpieces to a receiving position while supporting the plurality of workpieces from the lower side is provided at the screw conveyor, and a transfer speed by the belt conveyor is set faster than a transfer speed by the screw conveyor. Transfer device.   The workpiece transfer apparatus according to any one of claims 1 to 4, wherein the position switching means is provided with cam means for converting rotational motion into linear motion in order to linearly move the rotary shaft in the axial direction.   The workpiece according to any one of claims 1 to 5, wherein the position switching unit is provided with a transfer regulating unit that regulates the transfer of the workpiece holding unit when a transfer resistance of the workpiece holding unit exceeds a set value. Transfer device.   As the workpiece holding means, a plurality of holding claws that detachably hold the workpiece, an opening / closing means that simultaneously opens and closes the plurality of holding claws, and a lock means that mechanically locks the plurality of holding claws to a workpiece holding state. The workpiece transfer apparatus according to any one of claims 1 to 6, wherein a workpiece transfer device is used. A packaging box in which the workpiece is a cup-shaped container, a plurality of containers stored in one packaging box are transferred to a receiving position, the plurality of containers are held by a workpiece holding unit, and are transferred to a delivery position. The workpiece transfer device according to claim 1, wherein the workpiece transfer device is loaded and transferred into the workpiece.

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