JP2015199606A - splice device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a splice device which cuts and removes a defective bag-like web from a bag-like web connected in a sheet shape, and splices non-defective bag-like webs to each other.SOLUTION: A splice device comprises: web conveyance means 3, 4 for intermittently conveying a bag-like web; an upstream cutting receiving table 5 and a downstream cutting receiving table 6; an upstream cutting plate 7 and a downstream cutting plate 8; upstream chucks 17a, b; an upstream adsorption plate 19 and downstream chucks 15a, b for adsorbing and holding the top surface of the bag-like web; cameras 11a, b for detecting the images of a cutting position of the bag-like web and a cut surface; and a control unit for moving the bag-like web on the upstream side to a bonding position by the upstream chucks while adsorbing it by the upstream adsorption plate after a defective bag-like web is cut by the upstream cutting plate and the downstream cutting plate, and bonding the bag-like web on the upstream side in a state of holding the bag-like web on the downstream side by an adsorption groove provided in the downstream cutting reception table.

Description

  The present invention relates to a splicing device that cuts a defective portion of a web and connects non-defective webs when conveying the web on a sheet.

  In order to continuously supply a web such as a knit material having elasticity, there is known a splicing device that joins end portions of an old web and a new web (for example, Patent Document 1).

  As the type of web, in addition to knit material, etc., two sheet-like laminated webs are run up and down, the ends are bonded by thermal bonding, and predetermined intervals are bonded by thermal bonding in the running direction, Webs that create bag-like containers at regular intervals are also produced industrially. These webs are cut at regular intervals, and each bag-like container is filled with liquid.

JP2011-131981

  The bag-like web connected to the sheet is inspected for pinholes and poor bonding during sheet conveyance, and marks such as NG are attached to individual bags on the defective portions. The liquid filling is performed in a separate process from the web manufacturing process, and is performed on the web connected in a sheet form. Therefore, the defective bag-like web is manually cut and extracted by the operator in the web manufacturing process, and further, the work of joining the good bag-like webs manually is performed. This is because the end portions of the web are bonded together by heat treatment, so that the web is uneven and wrinkled, the shape stability of the cut surface is not ensured, and automation is difficult. Therefore, there is a problem that the production efficiency is greatly reduced.

  Accordingly, an object of the present invention is to provide a splicing device that cuts and removes a defective bag-like web from a bag-like web connected in a sheet shape, and joins good bag-like webs together.

In order to solve the above-mentioned problem, a splicing device according to claim 1 of the present invention provides:
A splicing device that cuts and pulls out defective bag-like webs from bag-like webs connected in a sheet shape, and joins good bag-like webs together.
Web conveying means for intermittently conveying the bag-shaped web;
With respect to the web conveyance direction, the upstream side is the side on which the bag-like web is supplied, the downstream side is the discharge side, and the upstream cutting receiving table and downstream cutting corresponding to the distance between the upstream and downstream sides of the bag-like web A receiving table is arranged,
An upstream cutting plate is disposed above the upstream cutting receiving table, and a downstream cutting plate is disposed above the downstream cutting receiving table,
In the vicinity of the upstream cutting plate, an upstream chuck that grips the bag-like web and intermittently feeds from the upstream side to the downstream side, and an upstream suction plate that sucks and holds the upper surface of the bag-like web are arranged,
A downstream chuck for gripping the bag-like web is arranged in the vicinity of the downstream cutting plate,
In the vicinity of the downstream chuck, a position for cutting the bag-like web and a camera for detecting an image of the cut surface are arranged.
Between the upstream cutting receiving table and the downstream cutting receiving table and the upstream cutting plate and the downstream cutting plate, the bag-shaped web connected in a sheet shape is conveyed, and the defective bag-shaped web is cut by the upstream cutting plate and the downstream cutting plate. Then, the upstream bag-shaped web is moved to the bonding position by the upstream chuck while being sucked by the upstream suction plate, and the downstream bag-shaped web is held upstream by the suction groove provided in the downstream cutting receiving table. It is a splicing apparatus provided with the control part which bonds the bag-like web of the side.

The invention according to claim 2 is the invention according to claim 1,
An air nozzle that blows air from the lower part of the bag-shaped web when the cut upstream bag-shaped web is moved to the bonding position by the upstream chuck while being sucked by the upstream suction plate is provided near the downstream cutting receiving table. Splicing device.

The invention according to claim 3 is the invention according to claim 1,
The downstream cutting receiving table is divided into an upstream receiving table that holds the upstream bag-like web and a downstream receiving table that holds the downstream bag-like web,
The upstream receiving table has a lifting function,
A splice having a mechanism in which the upstream receiving table is lowered from the downstream receiving table when the cut upstream bag-like web is adsorbed by the upstream adsorbing plate and moved to the bonding position by the upstream chuck. Device.

  According to the invention described in claim 1, the bag-shaped web connected in a sheet shape is conveyed between the upstream cutting receiving table and the downstream cutting receiving table, and the upstream cutting plate and the downstream cutting plate, so that a defective bag shape is formed. Since the web is cut by the upstream cutting plate and the downstream cutting plate, the defective bag-like web can be efficiently removed.

  Furthermore, since the image of the position to be cut by the camera and the cut surface is detected and the non-defective bag-like webs are bonded together, the production efficiency is increased. Even if the wrinkle of the bag-like web is generated by heat treatment or the cut surface of the bag-like web is pulled due to the conveyance tension, the upstream bag-like web is adhering to the upstream chuck while adsorbing to the upstream adsorption plate. Since the downstream bag-like web is bonded together in a state of being held by the suction grooves provided in the downstream cutting receiving table, the good bag-like webs can be bonded together with high accuracy.

  According to the second aspect of the present invention, when the cut upstream bag-like web is moved to the bonding position, the air nozzle is blown from the lower portion by the air nozzle. Can be prevented from drooping, and can be reliably conveyed to the bonding position, so that bonding failure can be prevented.

  According to the third aspect of the present invention, when the cut upstream bag-shaped web is moved to the bonding position, the upstream receiving table is lowered, so that it sags below the bag-shaped web. Even if it occurs, it does not contact the side surface of the upstream receiving table. After the bag-shaped web is moved to the pasting position, the upstream receiving table is raised, so that poor pasting can be prevented.

It is a schematic perspective view of the splicing device of the present invention. It is a schematic perspective view explaining the normal conveyance state of a bag-shaped web. It is a schematic perspective view explaining the detection of a defective bag-like web. It is a schematic perspective view explaining the state which cut | disconnects a defective bag-like web. It is a schematic perspective view explaining the state which extracts a defective bag-like web. It is a schematic perspective view explaining the state which prepares sticking of a good quality bag-like web. It is a schematic perspective view explaining the state which moves the upstream good quality bag-like web. It is a schematic perspective view explaining the state which bonds good quality bag-like webs together. It is a schematic perspective view explaining the state which bonding completed. It is a schematic perspective view explaining the state which has arrange | positioned the air nozzle. It is a schematic perspective view explaining the state which divided | segmented and arrange | positioned the downstream cutting | disconnection receiving table.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view of a splicing device of the present invention. In FIG. 1, the bag-like web 2 connected in a sheet shape with the left direction being the upstream side and the right direction being the downstream side toward the splice device 1 is intermittently operated and conveyed from the upstream side to the downstream side. .

  The bag-like web 2 connected in the form of a sheet is conveyed from the upstream side to the downstream side by a conveyance drive roll 3 provided on the downstream side and a free roll 4 provided on the upstream side. The conveyance drive roll 3 is driven by a connected servo motor so that the bag-like web 2 can be gripped by a nip roller and intermittently conveyed by a predetermined amount. The conveyance drive roll 3 and the free roll 4 form the web conveyance means of the present invention.

  An upstream cutting receiving table 5 and a downstream cutting receiving table 6 are arranged below the bag-like web 2 connected in a sheet shape. An upstream cutting plate 7 is disposed above the upstream cutting receiving table 5 and a downstream cutting plate 8 is disposed above the downstream cutting receiving table 6 so as to sandwich the bag-shaped web 2. The distance between the upstream cutting plate 7 and the downstream cutting plate 8 is set according to the size of the bag-like web 2 to be conveyed. When the size of the bag-shaped web 2 differs depending on the type, alignment is performed by driving a ball screw (not shown) attached to the upstream cutting receiving table 5 and the upstream cutting plate 7 by a servo motor or manually. On the downstream side of the downstream cutting receiving table 6, a plurality of suction holes 61 connected to a vacuum pump (not shown) are provided. A suction groove 62 is formed on the outer periphery of the suction hole 61. Thereby, the bag-like web 2 can be reliably sucked and held. The suction hole 61 and the suction groove 62 are indicated by dotted lines.

  A lower plate 9 is provided on the upstream side of the downstream cutting receiving table 6. The lower plate 9 is pivotable downward about a fulcrum 10 provided on the downstream cutting table 6 side. Above the lower plate 9, cameras 11a and 11b for recognizing images of the end portions 2a and 2b of the bag-like web 2 are provided. Between the bag-shaped web 2 and the cameras 11a and 11b, a work pressing plate 12 that presses the bag-shaped web 2 against the lower plate 9 is provided. The work pressing plate 12 is a transparent plate shape and is configured to press the bag-shaped web 2 across the width direction. Due to the transparent plate shape, images of the cut ends 2a and 2b of the bag-like web 2 can be easily recognized by the cameras 11a and 11b. Further, by pressing the bag-like web 2 that fluctuates in the vertical direction by the conveyance against the lower plate 9 with the work pressing plate 12, the focus of the cameras 11a and 11b can be stabilized and a clear image can be acquired.

  Downstream chucks 15 a and 15 b are provided on both sides of the downstream cutting receiving table 6. The downstream chucks 15 a and 15 b can grip the end portions 2 a and 2 b of the bag-like web 2 and stretch the wrinkles of the bag-like web 2 on the downstream cutting receiving table 6. The downstream chucks 15a and 15b are individually driven, and grip the non-defective bag-like web 2 when the camera 11a, 11b recognizes an image of the cut portion of the defective bag-like web 2 on the lower plate 9. Thereafter, the boundary between the defective bag-like web 2 and the non-defective bag-like web 2 can be moved onto the downstream cutting receiving table 6. When moving, the positions of the left and right downstream chucks 15a and 15b are adjusted so that the cut surface of the defective bag-like web 2 is perpendicular to the transport direction.

  Upstream chucks 17 a and 17 b are provided on the upstream side of the upstream cutting receiving table 5 with the bag-shaped web 2 interposed therebetween. The upstream chucks 17 a and 17 b can move to the downstream cutting receiving table 6 by gripping both ends of the cut non-defective bag-like web 2. The upstream chucks 17a and 17b are individually driven by a servo motor, and can correct the distortion of the cut surface of the bag-like web 2.

  An upstream suction plate 19 for sucking and holding the bag-like web 2 from above is provided at the center of the upstream chucks 17a and 17b. The upstream suction plate 19 is connected to a vacuum pump (not shown) via a pipe. Similarly to the upstream chucks 17a and 17b, the upstream suction plate 19 also moves while holding the bag-shaped web 2 up to the downstream cutting receiving table 6. Since the central portion of the bag-like web 2 is held by suction, the bag-like web 2 can be moved without causing the bag-like web 2 to bend due to the tension of the sheet. Therefore, when bonding the non-defective bag-like webs 2 on the downstream cutting receiving table 6, the cut surfaces can be aligned with no gap. The bag-like webs 2 are bonded together using the adhesive tape 20 after aligning the cut surfaces. The adhesive tape 20 is attached only to one side of the bag-like web 2. For this reason, if a gap is generated at the bonding position, there arises a problem that the adhesive tape 20 sticks to the conveyance drive roller 3 or a later-process roller via the gap. This greatly reduces the operating rate of the splicing device 1 and requires a long time for recovery. The splicing device of the present embodiment that can match the cut surfaces of the bag-like webs 2 without any gaps does not have the stop time of the splicing device 1 and is a device with high production efficiency.

  An NG label 31 is attached to the defective bag-like web 2 at a predetermined position, and the reflection type sensor 32 provided between the upstream cutting receiving table 5 and the downstream cutting receiving table 6 is used for the NG label 31. Detection is performed.

  A method for cutting and removing defective bag-like webs from bag-like webs connected in a sheet form using the splicing device 1 having such a configuration and joining good bag-like webs together is shown in FIGS. It explains using. These operation commands are issued by the control unit 30 that controls the splicing device 1. In addition, the joint part of the bag-shaped web 2 shall be described with a dotted line in the figure.

  First, as shown in FIG. 2, the bag-like web 2 connected in a sheet form is intermittently conveyed from the upstream side to the downstream side. When the bag-like web 2 is stopped, the NG label 31 is confirmed by the reflective sensor 32. Moreover, the joint parts 2c and 2d of the bag-like web 2 are confirmed using the cameras 11a and 11b on the upper part of the lower plate 9. The joint portions 2c and 2d are confirmed at the end portions 2a and 2b of the bag-like web 2. When the joint portions 2c and 2d are deviated from the predetermined positions, the driving amount of the transport driving roll 3 is corrected and the feeding amount of the bag-like web 2 is made constant. In this way, the accumulated positional deviation that occurs during intermittent feeding is prevented. When the non-defective bag-like web 2 is being conveyed, the gripping operation of the downstream chucks 15a and 15b and the upstream chucks 17a and 17b is not performed.

  Next, a state where the NG label 31 is detected is shown in FIG. When the NG label 31 is detected, after the cameras 11a and 11b confirm the joint portions 2c and 2d of the bag-like web 2, the bag-like web 2 is gripped by the downstream chucks 15a and 15b, and the joint portions 2c and 2d are detected. It moves so that it may be just under the downstream cutting board 8. FIG. When the movement is completed, the joint portions 2c and 2d also come directly under the upstream cutting plate 7 arranged at the interval of the bag-like web 2. In this state, the upstream chucks 17a and 17b operate to grip the bag-like web 2.

  Next, as shown in FIG. 4, the bag-shaped web 2 is cut. Cutting is performed by lowering the upstream cutting plate 7 to the upstream cutting receiving table 5 and the downstream cutting plate 8 to the downstream cutting receiving table 6. At the time of cutting, the downstream bag-like web 2 is sucked and held by the suction groove 62 provided in the downstream cutting receiving table 6, and the upstream bag-like web 2 is sucked and held by the upstream suction plate 19. By carrying out like this, it can prevent that the center part of the bag-shaped web 2 is pulled by tension | tensile_strength after a cutting | disconnection, and a cutting location deform | transforms.

  Next, as shown in FIG. 5, the defective bag-like web 2 is extracted. The extraction is performed by turning the lower plate 9 downward about the fulcrum 10. The defective bag-like web 2 falls.

  Next, as shown in FIG. 6, preparation for joining is performed. In preparation, first, the lower plate 9 is turned back and flattened, and the upstream cutting plate 7 and the downstream cutting plate 8 are raised and returned to the standby position.

  Next, as shown in FIG. 7, the bag-shaped web 2 is moved. For the movement, first, the cut surface of the bag-like web 2 is moved onto the lower plate 9 while the upstream-side bag-like web 2 is gripped by the upstream chucks 17 a and 17 b and held by the upstream suction plate. Next, the images of the end portions 2a and 2b of the upstream bag-like web 2 are recognized by the cameras 11a and 11b. Further, the downstream bag-like web 2 is moved to the tape application position while being gripped by the downstream chucks 15a and 15b. During the movement, the suction of the downstream cutting receiving table 6 is once released, and the suction holding is continued after the movement of the bag-like web 2 is completed. The downstream bag-like web 2 may be moved by moving the downstream cutting receiving table 6 to the tape application position together with the movement of the downstream chucks 15a and 15b. In this case, the suction of the downstream cutting receiving table 6 is not released.

  Next, as shown in FIG. 8, the upstream bag-like web 2 is moved to the tape application position. When the movement is completed, the end portions 2a and 2b of the bag-like web 2 are aligned with high accuracy based on the image data acquired by the cameras 11a and 11b. When the alignment is completed, an adhesive tape 20 (hatched portion in the figure) for bonding the bag-like webs 2 is pasted from above. If wrinkles or deformations due to thermal bonding occur in the pasting location, the sticking of the adhesive tape 20 becomes unstable (may occur even if it does not stick), but by holding the bag-like webs 2 by suction Can be pasted stably.

  Next, as shown in FIG. 9, the suction of the downstream cutting receiving table 6 is released. Next, the chucks of the upstream chucks 17a and 17b and the downstream chucks 15a and 15b are unchucked, and the gripping of the bag-like web 2 is released.

  3 to 9, the removal of the defective bag-like web 2 and the joining of the bag-like webs 2 are completed. When the non-defective bag-like webs 2 are bonded together, the upstream bag-like web 2 is sucked and held by the upstream suction plate 19, and the downstream bag-like web 2 is sucked by the suction groove 62 provided in the downstream cutting table 6. Since it is held, even if wrinkles of the bag-like web 2 due to heat treatment or tensile deformation of the cut surface of the bag-like web 2 due to the transport tension occurs, it is aligned accurately and bonded with the adhesive tape 20 Is done.

  Furthermore, in order to prevent the end of the bag-shaped web 2 from drooping downward during the movement of the bag-shaped web 2 shown in FIG. 7, an air nozzle 70 is provided in the vicinity of the downstream cutting receiving table 6 as shown in FIG. Provide. The air nozzle 70 is supplied with air from a compressed air supply device (not shown), and the bag-like web 2 being moved can be blown from the lower side to prevent the air nozzle 70 from sagging.

  Further, as shown in FIG. 11, the downstream cutting receiving table 6 is divided into an upstream receiving table 71 and a downstream receiving table 72, and the upstream receiving table 71 is provided with a lifting function. If the upstream receiving table 71 is lowered from the downstream receiving table 72 during the movement of the bag-shaped web 2, contact with the side surface of the upstream receiving table 71 is prevented even if the bag-shaped web 2 hangs down during the movement. can do. After the bag-like web 2 has moved to the bonding position, the upstream receiving table is raised to the normal position, so that the bonding operation can be reliably performed even if the bag-like web 2 hangs down.

DESCRIPTION OF SYMBOLS 1 Splice apparatus 2 Bag-shaped web 2a End part 2b End part 2c Joint part 2d Joint part 3 Conveyance drive roll 4 Free roll 5 Upstream cutting receiving table 6 Downstream cutting receiving table 7 Upstream cutting plate 8 Downstream cutting plate 9 Lower plate 10 Support point 11a Camera 11b Camera 12 Workpiece holding plate 15a Downstream chuck 15b Downstream chuck 17a Upstream chuck 17b Upstream chuck 19 Upstream suction plate 20 Adhesive tape 30 Control unit 31 NG label 32 Reflective sensor 61 Suction hole 62 Suction groove 70 Air nozzle 71 Upstream receiving Table 72 Downstream receiving table

Claims (3)

A splicing device that cuts and pulls out defective bag-like webs from bag-like webs connected in a sheet shape, and joins good bag-like webs together.
Web conveying means for intermittently conveying the bag-shaped web;
With respect to the web conveyance direction, the upstream side is the side on which the bag-like web is supplied, the downstream side is the discharge side, and the upstream cutting receiving table and downstream cutting corresponding to the distance between the upstream and downstream sides of the bag-like web A receiving table is arranged,
An upstream cutting plate is disposed above the upstream cutting receiving table, and a downstream cutting plate is disposed above the downstream cutting receiving table,
In the vicinity of the upstream cutting plate, an upstream chuck that grips the bag-like web and intermittently feeds from the upstream side to the downstream side, and an upstream suction plate that sucks and holds the upper surface of the bag-like web are arranged,
A downstream chuck for gripping the bag-like web is arranged in the vicinity of the downstream cutting plate,
In the vicinity of the downstream chuck, a position for cutting the bag-like web and a camera for detecting an image of the cut surface are arranged.
Between the upstream cutting receiving table and the downstream cutting receiving table and the upstream cutting plate and the downstream cutting plate, the bag-shaped web connected in a sheet shape is conveyed, and the defective bag-shaped web is cut by the upstream cutting plate and the downstream cutting plate. Then, the upstream bag-shaped web is moved to the bonding position by the upstream chuck while being sucked by the upstream suction plate, and the downstream bag-shaped web is held upstream by the suction groove provided in the downstream cutting receiving table. A splicing device provided with a control unit for bonding the bag-like web on the side. In the invention of claim 1,
An air nozzle that blows air from the lower part of the bag-shaped web when the cut upstream bag-shaped web is moved to the bonding position by the upstream chuck while being sucked by the upstream suction plate is provided near the downstream cutting receiving table. Splicing equipment. In the invention of claim 1,
The downstream cutting receiving table is divided into an upstream receiving table that holds the upstream bag-like web and a downstream receiving table that holds the downstream bag-like web,
The upstream receiving table has a lifting function,
A splice having a mechanism in which the upstream receiving table is lowered from the downstream receiving table when the cut upstream bag-like web is adsorbed by the upstream adsorbing plate and moved to the bonding position by the upstream chuck. apparatus.

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