JP2021167234A - Work processing method and work processing device - Google Patents

Abstract

To provide a work processing method capable of positioning automatically and continuously a working unit with a work conveyed on a conveyor when a length of the conveyor in a workpiece conveying means under driving is varied.SOLUTION: In the work processing method, expansion and contraction of a conveyor constituting a workpiece conveyance path L1 is detected by expansion and contraction detecting means 41 to correct an arrangement position of a working unit 11 mounted on a tracking unit 31 with respect to the workpiece conveyance path L1 based on the detected result of the detecting means when the tracking unit 31 in tracking processing means 19 returns to a moving start point.SELECTED DRAWING: Figure 5

Description

In the present invention, in a predetermined processing area provided on the work transfer path of the conveyor, the follow-up unit equipped with the work unit is reciprocated between the movement start point and the movement end point, and the work unit is moved on the work transfer path. The present invention relates to a work processing method for performing a predetermined process on the work by using the work unit while following and synchronizing the work to be conveyed, and a work processing device thereof.

Conventionally, line-type packaging machines such as air cleaners for cleaning containers filled with liquid, filling machines for filling containers with liquid, and cappers for attaching caps to containers filled with liquid can hold containers as workpieces. A work transporting means for transporting the container and a work unit incorporating processing means such as a cleaning head, a filling head, and a cap chuck are mounted on the conveyor, and a predetermined process is provided on the container transport path of the conveyor. In the region, a work processing apparatus provided with a follow-up processing means for performing each process such as cleaning, filling, and capping while following and synchronizing the container to which the conveyor is conveyed is used (see Patent Document 1).

As a specific configuration of the work transporting means, a pair of sprockets are provided with a top chain in which holding transport members for holding the work are mounted at equal intervals on a belt member formed in an annular shape by connecting a single belt member. The workpiece held by the workpiece holding and conveying member is predetermined by running the top chain between the two and supporting the top chain with guide rails arranged along the conveying path by driving a servomotor. (Refer to Patent Document 2), it is possible to exemplify a configuration in which the components are transported to the processing area (regardless of whether they are intermittent or continuous).

Further, as a specific configuration of the follow-up processing means, a work unit transport path is arranged within an appropriate length range parallel to the container transport path of the conveyor, and the work unit is transported by driving the servomotor. A follow-up processing operation and work in which the work unit corresponding to the container is moved in accordance with the container transport operation of the conveyor from the start point position to the end point position of the road, and a predetermined process is performed in synchronization with the container transfer operation of the conveyor. It is possible to exemplify a configuration in which the follow-up operation is stopped at the end point position of the unit transport path, and then the work unit is returned to the start point position of the work unit transport path by driving the servomotor, and the return operation is alternately repeated. See Patent Document 1).

Japanese Unexamined Patent Publication No. 2003-104490 Japanese Unexamined Patent Publication No. 10-202479

However, in the work processing apparatus as described above, the conveyor of the work transfer means may be stretched or loosened in the work transfer direction. For example, when a top chain in which a single belt member is connected as described above is used as a conveyor, the connecting portion of each belt member may bend due to the weight of the work, and the container as the work is heated to a high temperature. In a work processing device that fills a filling liquid, a conveyor such as a top chain may expand due to the heat of the filling liquid.

If the length of the conveyor increases due to such loosening or thermal expansion, the transfer pitch of the workpieces to be conveyed at equal intervals by the conveyor naturally fluctuates. There was a gap between the position of the work being conveyed and the position of the work unit that moves following the container transfer operation of the conveyor, and the predetermined processing by the work unit may not be performed properly.

In response to this problem, conventionally, the elongation of the conveyor is visually confirmed, and the setting of the servomotor as a drive source regarding the start point position and the end point position of the work unit of the follow-up processing means in the work unit transport path is changed each time. I had to do it. In addition, at the time of the change, in order to position the work unit at the starting point position after the change, it is necessary to restart the device itself, and in that case, the work transported on the conveyor must be manually removed. Therefore, there is a problem that the work efficiency of the entire work processing apparatus is lowered.

The present invention has been made in view of such problems, and an object of the present invention is to automatically and continuously perform a work transfer path of a work unit when the length of the conveyor of the driven work transfer means fluctuates. It is an object of the present invention to provide a work processing method and a work processing apparatus capable of correcting the arrangement position with respect to the work unit and aligning the work unit with the work conveyed on the conveyor.

In order to achieve the above-mentioned object, the work processing method of the present invention reciprocates a tracking unit equipped with a work unit between a movement start point and a movement end point in a predetermined processing area provided on a work transfer path of a conveyor. This is a work processing method in which the work unit is used to perform a predetermined process on the work while following and synchronizing the work unit with the work transported on the work transfer path, and the expansion and contraction of the conveyor is expanded and contracted. It is characterized in that it is detected by the detecting means, and based on the detection result of the expansion / contraction detecting means, the control is performed to correct the arrangement position of the working unit with respect to the work transport path when the following unit returns to the moving start point. ..

According to the work processing method of the present invention, when the length of the conveyor of the work transporting means fluctuates, the work unit is automatically and continuously corrected for the arrangement position with respect to the work transport path and transported on the conveyor. It can be aligned with.

Further, the work processing device of the present invention is a device that executes the above-mentioned work processing method, and performs a predetermined process on the work and a work transfer means for transporting the works arranged at equal intervals on the upper surface of the conveyor. The correction unit moves by driving the first drive source on the correction unit movement path on which the work unit and the work unit are mounted and arranged parallel to the transport path of the work on the conveyor. A correction unit capable of arranging the work unit at a stop position set on the path, and a follow-up unit movement path on which the correction unit is mounted and arranged parallel to the transfer path of the work on the conveyor. A follow-up unit is provided that can be reciprocated by driving a second drive source between a movement start point on the upstream side in the transport direction of the work set above and a movement end point on the downstream side. A follow-up processing means for performing a predetermined process on the work by the work unit while following and synchronizing the transfer of the work, an expansion / contraction detecting means for detecting the expansion / contraction of the conveyor of the work transfer means, and the first driving means. A position correction means that controls the drive of the work unit and moves the work unit to the set position moved by the correction amount based on the detection result of the expansion / contraction detection means on the correction unit movement path. It is characterized by being prepared.

According to the work processing apparatus of the present invention, in addition to returning the tracking unit to the movement start point by the second drive source, the first operation is based on the detection result of the change in the conveyor length of the work transfer means of the expansion / contraction detection means. The drive of the drive source is controlled to correct the stop position of the correction unit on the correction unit movement path on the follow-up unit. As a result, the arrangement position of the work unit mounted on the correction unit with respect to the follow-up unit is also corrected, so that even if the length of the conveyor of the work transport means fluctuates, the work unit is automatically and continuously moved on the conveyor. The work to be conveyed and the work unit can be aligned.

In addition, another work processing device of the present invention is a device that executes the above-mentioned work processing method, and is a work transporting means for transporting works arranged at equal intervals on the upper surface of a conveyor. A work unit that performs a predetermined process on the work, and a work unit that is set on a follow-up unit movement path that is arranged parallel to the work transfer path on the conveyor. A work unit is provided with a follow-up unit that can reciprocate from the start point of movement on the upstream side in the direction to the end point of movement on the downstream side by driving a drive source, and the follow-up unit follows and synchronizes with the transport of the work on the conveyor. The detection result of the follow-up processing means for performing a predetermined process on the work, the expansion / contraction detection means for detecting the expansion / contraction of the conveyor of the work transfer means, and the expansion / contraction detection means for detecting the expansion / contraction of the follow-up unit on the movement path of the follow-up unit. It is characterized by including a position correction means for performing correction with the position moved by the amount of correction based on the above as the movement start point.

According to the work processing apparatus of the present invention, when the tracking unit is returned to the movement start point, the position of the movement start point is corrected based on the detection result of the change in the length of the conveyor of the work transfer means of the expansion / contraction detecting means. As a result, even if the length of the conveyor of the work transporting means fluctuates, the work transported on the conveyor is automatically and continuously aligned with the work unit mounted on the follow-up unit. Can be done.

As described above, according to the work processing apparatus of the present invention described above, when the length of the conveyor of the work transporting means expands and contracts due to heat or the like, the position of the work unit is automatically and continuously corrected. It is possible to easily align the work with the work to be conveyed on the conveyor, prevent the work from becoming dirty, execute a predetermined process reliably, and maintain the work efficiency of the device itself.

Schematic front view showing an embodiment of the work processing apparatus of the present invention. (A) is a plan view of a main part, (B) is a transparent front view of (A), and (C) is a left view of (A) for explaining the expansion / contraction detecting means in one embodiment of the work processing device of the present invention. (A) is a plan view of a main part (movement start point), and (B) is a front view of a main part of (A) for explaining the follow-up processing means in one embodiment of the work processing device of the present invention. Front view of a main part (moving end point) for explaining the follow-up processing means in one embodiment of the work processing apparatus of the present invention. Front view of a main part (movement start point) for explaining the correction of the correction unit in one embodiment of the work processing apparatus of the present invention.

<First Embodiment>
As shown in FIG. 1, the work processing apparatus of the present embodiment includes a work transfer means 1 for transporting a container B as a work, and the container B is placed on a work transfer path (work transfer path) L1. On the other hand, a cap is wound around the filling region in which the filling machine 12 as the working unit 11 for filling the liquid filling as the contents is arranged and the mouth portion of the container B filled with the contents on the downstream side thereof. A winding region is provided in which a winding device 60 provided with a tightening chuck is provided. Has been done.

Specifically, in the work transporting means 1, the drive side chain foil 7A and the driven side chain foil 7B are separated from each other on the downstream side and the upstream side in the transport direction of the container B, and their respective rotation axes (rotation centers) are horizontal. In addition, they are arranged in parallel on the frame 2 of the work transfer means 1. In the present embodiment, the drive-side chain wheel 7A can rotate by transmitting the driving force of the servomotor 3 as a driving source via a transmission system (not shown).

Then, between the pair of chain wheels 7A and 7B, a work transfer path L1 provided above the rotation axis of the chain wheels 7A and 7B and a work transfer path L1 provided below the rotation axis are opposite to the work transfer path L1. A top chain 5 as an endless conveyor is hung so as to circulate with the return transport path L2 traveling in the direction. That is, of the traveling paths of the top chain 5, the section in which the container B can be held and transported on the surface of the top chain 5 is defined as the work transfer path L1.

Here, the top chain 5 is made of resin or the like, and as shown in FIGS. 2A and 2B, a flat plate-like member on which a work can be placed and a pair of chain foils 7A are provided. , 7B has a known configuration in which a plurality of single belt members 5A integrally formed with a tooth portion formed on the outer circumference and a chain portion that meshes with each other are connected by a joint pin (not shown) to form an endless shape. There is. The belt member 5A of the top chain 5 is equipped with an attachment 8 for holding the container B in the work transfer path L1 with its mouth facing upward. It should be noted that the arrangement of the attachments 8 does not have to be all the belt members 5A, and the arrangement interval can be adjusted by, for example, arranging the attachments 8 on every four belt members 5A.

Then, in the transport device 1 of the present embodiment, in the top chain 5 spanned between the pair of chain wheels 7A and 7B, the drive side chain wheel 7A to which the driving force of the servomotor 3 is transmitted rotates. The chain wheel 7B on the driven side also travels in a predetermined direction, and the chain wheel 7B on the driven side also rotates driven by the driving force transmitted from the traveling top chain 5.

The filling machine 12 provided with the nozzle 13 for filling the liquid filling in the filling region with respect to the container B transported through the work transport path L1 is a work unit 11 that performs a predetermined process on the container B. In the embodiment, the nozzle 13 is arranged in the follow-up processing means 10 so that the nozzle 13 can follow the transport of the container B of the top chain 5.

The follow-up processing means 10 is composed of a work unit 11, a correction unit 21 on which the work unit 11 is mounted, and a follow-up unit 31 on which the correction unit 21 is mounted.

As shown in FIGS. 1 and 3, the follow-up unit 31 has a wall portion 37 erected from the table 32 of the filling machine 12 provided on one side of the work transfer path 1 in the filling region of the work transfer means 1. The slider stage 33C on which the correction unit 21 is mounted is configured by an actuator 33 that can be reciprocated in parallel and horizontally with respect to the work transfer path L1. Specifically, the actuator 33 includes a ball screw (not shown) arranged in the case 33A, a servomotor (second drive source) 33B for rotating the ball screw, and the case 33A due to the rotation of the ball screw. It has a slide stage 33C that can slide and move along a linear guide (not shown) formed in.

On the movement path (following unit movement path) 35 of the follow-up unit 31 in which the slide stage 33C is slidable, the movement start point on the upstream side to the movement end point on the downstream side, which is the work area for actually executing the filling work, are located. The slide stage 33C is set, and is controlled by the drive control unit 50 so as to reciprocate from the movement start point to the movement end point by the drive of the servomotor 33B as the second drive source.

The correction unit 21 mounted on the stage of the follow-up unit 31 is also composed of an actuator 23 configured in the same manner as the follow-up unit 31, and the slide stage 23 on which the nozzle 13 of the filling machine 12 as the work unit 11 is mounted is used as the work transfer path L1. It is possible to reciprocate in parallel and horizontally with respect to.

A stop position is set on the movement path (correction unit movement path) 25 on which the slide stage 23 of the case 23A of the correction unit 21 can slide and move in consideration of the current extension (looseness) state of the top chain 5. The slide stage 23 equipped with the nozzle 13 of the filling machine 12 is moved by the drive of the servomotor 23B as the first drive source, and is controlled by the drive control unit 50 so as to be arranged at the stop position. ..

As shown in FIG. 3B, the slide stage 23 of the correction unit 21 has a bearing base end portion 27A of the module base 27 that supports the six nozzles 13 used in the filling process performed in the filling region. The main body 27B of the module base 27 is connected, extends horizontally above the work transfer path L1, and the six nozzles 13 are arranged in the transfer direction of the container B according to the set interval of the container B to be transferred. I support it.

Then, in the work processing apparatus of the present embodiment, as shown in FIGS. 1 and 5, the filling region in the work transfer path L1 is appropriately aligned with the container B reaching the filling area and the nozzle 13. On the upstream side, a sensor 42 constituting the expansion / contraction detecting means 41 for detecting the expansion / contraction of the top chain 5 is arranged.

In the present embodiment, as the sensor 42 of the expansion / contraction detecting means 41, a photoelectric sensor composed of a light emitting unit 42A that emits light and a light receiving unit 42B that receives light is used, and the sensor 42 is a top chain 5 of the work conveying means. As shown in FIG. 2C, a frame near the driven chain wheel 7B can detect a change in the amount of light entering the receiver 42B due to the passage of attachments 8 arranged at equal intervals on the belt member 5A. The light emitting portion 42A and the light receiving portion 42B are arranged so as to face each other with the belt member 5A of the top chain 5 interposed therebetween.

The work processing device of the present embodiment is set to be capable of transmitting data to the sensor 42 by the communication means C, and includes a position correction means 51 that processes the detection result of the sensor 42. That is, the position correction means 51 functions as one of the drive control units 50, controls the drive of the servomotor 23A which is the first drive means, and based on the detection result of the sensor 42, the distance between the adjacent attachments 8. The dimension, that is, the distance dimension of the center of the adjacent container B to be transported is obtained, and the expansion / contraction amount (dimension) of the top chain 5 is determined by comparing with the currently set numerical value. In the present embodiment, the amount of expansion and contraction of the top chain 5 is obtained from the difference between the time interval of detection of the attachment 8 by the sensor 42 and the reference time interval. Alternatively, the amount of expansion and contraction of the top chain may be obtained from the rotation angle of the encoder by using the encoder of the servomotor 3 arranged on the chain wheel 7A on the drive side.

When the detected expansion / contraction amount is the expansion / contraction amount that requires correction, the position correction means 51 controls the drive of the servomotor 23A, which is the first drive means, and mounts the nozzle 13 on the slide stage 23C. Is controlled to move by the corresponding correction amount on the correction unit movement path 25.

As for the correction amount, the expansion / contraction amount requiring correction and the corresponding correction amount are obtained in advance in association with each other. In the case of the present embodiment, the correction amount according to the expansion / contraction amount of the top chain 5 is determined in consideration of the opening diameter of the container B into which the nozzle 13 is loosely inserted and the thickness of the nozzle 13.

Subsequently, the operation of the work processing apparatus of the present embodiment configured in this way will be described.

In the work processing apparatus of the present embodiment, in the filling step, the filling liquid is simultaneously filled into the corresponding six empty containers B by using the six nozzles 13. That is, each nozzle 13 has six empty containers B corresponding to each nozzle 13 at the timing when the slide stage 33C of the follow-up unit 31 is located at the movement start point shown in FIG. It is simultaneously loosely inserted into the opening of the empty container B of. When the slide stage 33C moves the follow-up unit movement path 35 from the movement start point to the movement end point by driving (forward rotation) of the servomotor 33B of the follow-up unit 31 of the follow-up processing means 10, the slide stage 33C follows and synchronizes with the transport of the container B. Filling is performed while measuring the filling liquid from the liquid supply tank (not shown) through the liquid supply tube (not shown). When the filling is completed, each nozzle 13 is simultaneously removed from each container B. When the slide stage 33C of the follow-up unit 31 reaches the movement end point shown in FIG. 4, the slide stage 33C is returned to the movement start point by driving (reverse rotation) of the servomotor 33B of the follow-up unit 31, and the nozzle 13 moves to the next container B. Use for filling.

For example, as shown in FIGS. 3 and 4, the moving start point to the moving end point are set to the transport distances for four containers B, and the follow-up unit 31 is supplied while the four containers B are supplied to the work transport path L1. The slide stage 33C is moved from the moving start point to the moving end point to fill the six containers B, and the slide stage 33C is returned from the moving end point to the moving start point while the two containers B are supplied to the work transfer path L1. .. When the slide stage 33C returns to the movement start point, the work processing device is set so that six empty containers B are supplied and conveyed to the corresponding positions of the nozzles 13 at the movement start point.

At this time, the sensor 42 of the expansion / contraction detecting means 41 detects the passage of the attachment 8 passing through the upstream side of the filling region. In this way, by detecting the passage of the attachment 8 in the vicinity of the work unit 11 that adjusts the position with the container B, the alignment with the container B becomes more appropriate.

The position correction means 51 obtains the distance dimension between the adjacent attachments 8 from the detection result of the sensor 42, that is, the distance dimension of the center of the adjacent container B to be transported, and the expansion / contraction amount is the expansion / contraction amount that needs to be corrected. If there is, the correction amount corresponding to it is obtained. Then, the drive of the servomotor 23A, which is the first driving means, was controlled, and as shown in FIG. 5, the slide stage 23C equipped with the nozzle 13 was moved by the corresponding correction amount on the correction unit moving path 25. Move to the set position. In FIG. 5, the position of the nozzle 13 before correction is indicated by a broken line. As a result, when the slide stage 33C of the following unit returns to the movement start point, the arrangement position of each nozzle 13 of the work unit with respect to the work transfer path 1 can be corrected.

The nozzle 13 shown by the broken line in FIG. 5 is supported so as to be inserted into the substantially center of the openings of the six containers B arranged in the container transport path L1 on the top chain 5 in which the original elongation does not occur. With respect to the openings of the six containers B which are transported by the top chain 5 and lined up in the container transport path L1, the openings are deviated from the substantially center of the openings and face the inside and outside of the openings. Therefore, if there is a misalignment that cannot be inserted into the opening, the filling of the container B will contaminate the container B and become incomplete.

Therefore, as described above, with the slide stage 23C of the correction unit 21 in the reference position, the servomotor 23B of the correction unit 21 is driven, and the slide stage 23C of the correction unit movement path 25 is moved and mounted. By correcting the position of the existing nozzle 13 as shown in FIG. 5, all of the six nozzles 13 can be changed without changing the distance between the six nozzles 13, the moving start point and the moving end point of the following unit 31. It can be loosely inserted into the opening of the container B. Therefore, the correction amount is determined according to the expansion / contraction amount of the top chain 5 in consideration of the distance dimension between the adjacent attachments 8, the opening diameter of the container B into which the nozzle 13 is loosely inserted, and the thickness of the nozzle 13.

For example, when it is detected that the distance dimension between the adjacent attachments 8 is extended, the servomotor 23B of the correction unit 21 is driven and the slide stage 23C is controlled to be moved upstream by an appropriate dimension. do. By this control, the position of the module base 27 fixed to the slide stage 23C and the position of the nozzle 13 of the filling machine 12 supported by the module base 27 also move to the upstream side. If it is detected that the distance between the adjacent attachments 8 has become shorter, the servomotor 23B of the correction unit 21 may be driven and the slide stage 23C may be controlled to move downstream. .. Further, when the power is turned on again or the like, the slide stage 23C of the correction unit 21 is positioned at the reference position before the correction.

By correcting the arrangement position of the nozzle 13 on the correction unit 21 in this way, it seems that the top chain 5 is stretched due to the influence of the heat of the filling liquid filled in the container B, the weight of the filled container B, and the like. Even in this case, the arrangement position of the work unit with respect to the work transfer path is automatically and continuously corrected without changing the control of the reciprocating movement of the slide stage 33B from the movement start point to the movement end point of the follow-up unit 31. The corresponding nozzle 13 can be loosely inserted into the opening of each container B.

<Second Embodiment>
Hereinafter, only the differences between the work processing apparatus of the present embodiment and the work processing apparatus of the first embodiment will be described.

The work processing device of the present embodiment is configured such that the tracking processing device and the correction control means are different from each other. Specifically, in the follow-up processing device, the correction unit in the work processing device of the first embodiment is omitted, and the module-based bearing base end portion that supports the six nozzles is connected to the slide stage of the follow-up unit.

Then, the correction control means corrects the position of the movement start point of the follow-up unit based on the detection result of the expansion / contraction detection means according to the correction control of the first embodiment. Then, in the present embodiment, when the tracking unit is returned to the movement start point, it is returned to the movement start point corrected based on the detection result of the change in the length of the top chain of the work transport means.

Thereby, also in the present embodiment, it is possible to automatically and continuously align the container transported on the top chain with the nozzle of the filling machine mounted on the follow-up unit.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention. For example, in the present embodiment, a container is assumed as a work, and a filling machine and a winding device are assumed as processing devices that require positioning with the work provided in the work transfer path, but the processing device is limited to this. is not it. Similarly, in the present embodiment, the alignment of the nozzle and the container as the work in the filling machine has been described, but it is also possible to correct the alignment of the chuck and the container as the work in the winding device. Further, although the filling machine has been described in the case where filling is performed with six nozzles at a time, the number of nozzles may be one or a plurality. For example, when processing is performed on one container (one nozzle or chuck), the correction amount may be the same as the detected extension dimension of the top chain.

1 Work transfer means 2 Frame 3 Servo motor 5 Top chain 5A Belt member 7A Chain wheel 7B Chain wheel 8 Attachment 10 Follow-up processing means 11 Work unit 12 Filling machine 13 Nozzle 21 Correction unit 23 Actuator 23A Case 23B Servo motor (1st drive) source)
23C slide stage 25 correction unit movement path 27 module base 27A bearing base end 31 follow-up unit 32 filling table 33 actuator 33A case 33B servo motor (second drive source)
33C Slide stage 35 Follow-up unit movement path 37 Wall part 41 Expansion / contraction detection means 42 Sensor 42A Light projector 42B Light receiving part 50 Drive control unit 51 Position correction means 60 Winding device L1 Work transfer path L2 Return transfer path B Container S Carry-in part E Recovery unit C Communication means

Claims (3)

In a predetermined processing area provided on the work transfer path of the conveyor, the follow-up unit equipped with the work unit is reciprocated between the movement start point and the movement end point, and the work unit is conveyed on the work transfer path. This is a work processing method in which a predetermined process is performed on the work by using the work unit while following and synchronizing with.
The expansion and contraction of the conveyor is detected by the expansion and contraction detecting means, and based on the detection result of the expansion and contraction detecting means, control is performed to correct the arrangement position of the work unit with respect to the work transfer path when the following unit returns to the movement start point. A work processing method characterized by performing. Work transport means for transporting workpieces arranged at equal intervals on the upper surface of the conveyor, and
A work unit that performs a predetermined process on the work, the work unit is mounted, and the work unit moves on the correction unit movement path arranged parallel to the transport path of the work on the conveyor by driving the first drive source. By doing so, the correction unit capable of arranging the work unit at the stop position set on the correction unit movement path and the correction unit are mounted and parallel to the transfer path of the work on the conveyor. Follow-up unit arranged on the movement path A follow-up unit that can be reciprocated by driving a second drive source from the movement start point on the upstream side in the transport direction of the work to the movement end point on the downstream side. A follow-up processing means for performing a predetermined process on the work by the work unit while following and synchronizing the follow-up unit with the transport of the work on the conveyor.
An expansion / contraction detecting means for detecting the expansion / contraction of the conveyor of the work transporting means, and an expansion / contraction detecting means.
The drive of the first driving means is controlled, and the position correction for moving the working unit to the set position moved by the correction amount based on the detection result of the expansion / contraction detecting means on the correction unit moving path is executed. Position correction means and
A work processing device characterized by comprising. Work transport means for transporting workpieces arranged at equal intervals on the upper surface of the conveyor, and
A work unit that performs a predetermined process on the work, a work unit that is mounted on the work, and is set on a follow-up unit movement path that is arranged parallel to the work path on the conveyor. The work unit is provided with a follow-up unit that can reciprocate from the start point of movement on the side to the end point of movement on the downstream side by driving a drive source, and the follow-up unit follows and synchronizes with the transport of the work of the conveyor. A follow-up processing means that performs a predetermined process on the work, and
An expansion / contraction detecting means for detecting the expansion / contraction of the conveyor of the work transporting means, and an expansion / contraction detecting means.
A position correction means that controls the drive of the drive source and performs correction with the movement start point at a position where the follow-up unit is moved by a correction amount based on the detection result of the expansion / contraction detection means on the follow-up unit movement path. ,
A work processing device characterized in that

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