JP6642198B2 - Workpiece supply device - Google Patents

Description

  The present invention relates to a workpiece supply device that supplies a workpiece to a processing device.

  2. Description of the Related Art Conventionally, a plurality of workpieces on which a design such as a picture is applied are simultaneously created by continuously applying the design at equal intervals to a band-shaped workpiece by a processing apparatus. When a large amount of this workpiece is manufactured, a workpiece supply device is provided in front of the processing device, and a new belt-shaped workpiece is being supplied before the belt-shaped workpiece being supplied to the processing device is exhausted. A so-called paper splicing process for bonding and connecting to a workpiece is performed, and the processing of the workpiece is continuously performed without stopping the processing of the processing apparatus.

In addition, such a processed product may be subjected to so-called additional printing, in which, after a specific design is applied, a processing for applying another design is performed in order to improve the design.
When applying another design by this additional printing method, when a new workpiece is spliced with the workpiece being supplied to the processing device, the workpiece being supplied (old workpiece) is processed. The old workpiece and the new workpiece are adhered in a state where the applied design and the design applied to the newly supplied workpiece (new workpiece) that have been spliced are shifted. There was a case. In this case, the space between the designs provided at equal intervals on each workpiece is not equal between the old workpiece and the new workpiece, and another design applied to the new workpiece. However, there is a case where the applied design is shifted with respect to the already applied design, and the design of the processed product is deteriorated.

  As described above, various techniques have been proposed to suppress the deviation of the design between the old workpiece and the new workpiece (for example, see Patent Document 1). In the invention of Patent Literature 1, an adjustment mechanism for correcting a deviation of a design pattern of a new workpiece after the splicing process is completed by the workpiece supply apparatus is provided on the processing apparatus side. However, when the adjustment mechanism is provided on the processing apparatus side, it is possible to correct the misregistration of the design of the workpiece transported after the splicing process until the misalignment is corrected by the adjustment mechanism. In some cases, the part was not turned into a product and was discarded.

JP 2015-111692 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide a printing material supply apparatus capable of reducing the amount of a work to be discarded due to a misalignment of a design after a splicing process.

  The present invention solves the above problem by the following means. In addition, in order to make it easy to understand, description is given with reference numerals corresponding to the embodiment of the present invention, but the present invention is not limited to this. Further, the configurations described with reference numerals may be appropriately improved, or at least a part thereof may be replaced with another component.

According to a first aspect of the present invention, a plurality of register marks (M) are provided at equal intervals, and a plurality of register marks (M) are provided on a strip-shaped first workpiece (P1) supplied to a processing device (40). A workpiece supply device (10) for connecting strip-shaped second workpieces (P2) provided at intervals and supplying the processed workpiece to the processing apparatus, wherein the first workpiece supplied to the processing apparatus is provided. A first detector (20A) for detecting the register mark, a roll (14B) for unwinding the second workpiece, and a drive for rotating the roll on which the second workpiece is wound. And a second detector (20B) for detecting the register mark of the second workpiece rotated by the drive unit, and bonding the second workpiece to the first workpiece. And an adhesive portion for joining the first workpiece and the second workpiece ( 7), a speed changing unit (19) for changing a transfer speed of the first workpiece in the bonding unit, and a speed changing unit (19) of the bonding unit based on detection information of the first detection unit and the second detection unit. A control unit (21) for controlling driving and driving of the speed varying unit, wherein the control unit controls the speed varying unit to control the registration mark of the first workpiece in the bonding unit. And after substantially matching the timing of passing the register mark of the second workpiece, driving the bonding portion to bond the first workpiece and the second workpiece. Workpiece supply device.
According to a second aspect, in the workpiece supply device (10) according to the first aspect, the speed varying section (19) is configured by a compensator roll, and the processing apparatus (40) is more than the bonding section (17). ) Side is provided on the workpiece supply device.

  ADVANTAGE OF THE INVENTION According to this invention, the amount of workpieces discarded due to misalignment of a design after a splicing process can be reduced.

FIG. 1 is a diagram illustrating an overall configuration of a printing system according to an embodiment. It is a figure showing the details of the supply device of an embodiment. It is a block diagram of a supply device of an embodiment. FIG. 6 is a diagram illustrating an operation of the supply device according to the embodiment during a splicing process. FIG. 6 is a diagram illustrating an operation of the supply device according to the embodiment during a splicing process. FIG. 7 is a diagram illustrating an operation after the splicing process of the supply device according to the embodiment.

(Embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings and the like.
FIG. 1 is a diagram illustrating an overall configuration of a printing system 1 according to the embodiment.
FIG. 2 is a diagram illustrating details of the supply device 10 of the embodiment.
FIG. 3 is a block diagram of the supply device 10 of the embodiment.
1 and 2 and the following description, the XYZ orthogonal coordinate system is used to set the vertical direction of the printing system 1 to the Z direction and the depth direction of the printing system 1 to the Y direction for clarity. The front-back direction orthogonal to the vertical direction and the depth direction of the printing system 1 is defined as an X direction. Here, the vertical upper side in the vertical direction is defined as + Z side, the vertical lower side is defined as -Z side, the depth side is defined as + Y side, the near side is defined as -Y side, and further, the front and rear direction is defined. The front side is the -X side, and the rear side is the + X side.

In the following description, as a processing apparatus for processing a workpiece, an example of a printing apparatus for performing printing on a workpiece will be described. However, the present invention is not limited to this. It may be a processing device or the like for applying to a workpiece.
The printing system 1 is used for printing a workpiece such as a product package. In the present embodiment, an example in which the workpiece is the resin sheet P formed in a belt shape is shown, but the invention is not limited to this, and the workpiece may be paper or the like formed in a belt shape. .
The printing system 1 according to the present embodiment is used for printing another pattern, character, or the like on a resin sheet P on which a specific pattern has already been printed by another printing apparatus or the like, that is, for additional printing. .
As shown in FIG. 1, the printing system 1 includes a supply device (workpiece supply device) 10, an infeed mechanism 30, an outfeed mechanism 31, four printing devices 40 (40A to 40D), and a winding device. 50 and the like.

The supply device 10 is a device that is disposed at the forefront (−X side) of the printing system 1 and supplies the resin sheet (workpiece) P to the printing device 40. In addition, the supply device 10 can perform a so-called paper splicing process in which a new resin sheet P2 is adhered to the resin sheet P1 being supplied while supplying the resin sheet P1 to the printing device 40.
As shown in FIGS. 2 and 3, the supply device 10 includes a frame unit 11, a holding member 12, a holding member driving unit 13, a roll unit 14, a roll driving unit 15, a feed roll 16, a bonding unit 17, a cutting unit 18, It comprises a speed change unit 19, a detection unit 20, a control unit 21, and the like.
The frame portion 11 is a frame-shaped member serving as a base of the supply device 10, and has a holding member 12 rotatably attached thereto.

The holding member 12 is a member that holds the roll unit 14 rotatably. The holding member 12 of the present embodiment includes four arm members 12A to 12D, and the arm members 12A to 12D are arranged in a cross shape. The holding member 12 is provided with a holding member driving unit 13 at the center of the cross, and is held rotatably with respect to the frame unit 11.
The arm member 12A is provided with a roll drive unit 15A at an end thereof, and the roll unit 14A is rotatably held via the roll drive unit 15A, and the roll unit 14A rotates with respect to the arm member 12A. (See arrow A in FIG. 2).
The arm member 12B is provided with a roll driving unit 15B at an end thereof, and the roll unit 14B is rotatably held via the roll driving unit 15B, and the roll unit 14B rotates with respect to the arm member 12B. (See arrow B in FIG. 2). The arm member 12B is arranged at a position facing the arm member 12A so as to sandwich the holding member driving unit 13.

The feed roll 16 is rotatably held at an end of each of the arm members 12C and 12D. The arm member 12C and the arm member 12D are opposed to each other so as to sandwich the holding member drive unit 13, and are arranged so as to be perpendicular to the adjacent arm members 12A and 12B.
The holding member drive unit 13 is a part that holds the holding member 12 so as to be rotatable with respect to the frame unit 11, and includes a rotation motor (not shown) and the like. As shown in FIG. 3, the holding member driving unit 13 is connected to the control unit 21, and can rotate the holding member 12 with respect to the frame unit 11 based on a driving signal output from the control unit 21. (See arrow C in FIG. 2).

As shown in FIG. 2, the roll portion 14 is a columnar member wound around a band-shaped resin sheet P as a workpiece, and is rotated with respect to the holding member 12 by the roll drive unit 15 as described above. can do. In the present embodiment, the roll unit 14 is provided with two, that is, a roll unit 14A and a roll unit 14B.
The roll portion 14A is rotatably held by the arm member 12A, and the resin sheet P1 is wound on a cylindrical peripheral side surface thereof. 1 and 2, the resin sheet P1 wound up by the roll portion 14A is unwound to the printing device 40 side.

  The roll portion 14B is rotatably held by the arm member 12B, and the resin sheet P2 is wound on a cylindrical peripheral side surface thereof. The resin sheet P2 wound by the roll portion 14B is a resin sheet that is unwound to the printing device 40 side after the resin sheet P1. The resin sheet P2 is provided with an adhesive layer N at the winding end portion, and adheres to the resin sheet P1 before the resin sheet P1 being unwound toward the printing apparatus 40 is completely unwound from the roll portion 14A. By being adhered by the layer N, it is unwound toward the printing device 40 (details will be described later).

A specific pattern has already been printed at regular intervals on the resin sheet P1 and the resin sheet P2, and another pattern, character, or the like is printed (printed again) by the printing system 1 in accordance with the pattern. Further, on the resin sheet P1 and the resin sheet P2, register marks M for confirming the positions of the patterns are printed at regular intervals for each of the patterns already printed (see FIG. 4).
The roll drive unit 15 is a part that rotates the roll unit 14 with respect to the holding member 12, and is configured by a rotation motor. The roll drive unit 15 of the present embodiment is provided with two units, that is, a roll drive unit 15A and a roll drive unit 15B, which are respectively disposed on the rotation axes of the roll units 14A and 14B. Each of the roll driving units 15A and 15B is connected to the control unit 21 as shown in FIG. 3, and can rotate each of the roll units 14A and 14B based on a drive signal output from the control unit 21. .

As shown in FIG. 2, the feed roll 16 is a columnar roll that assists in sending the resin sheet P unwound from the roll unit 14 to the bonding unit 17 side. In the present embodiment, the feed roll 16 is provided on each of the arm member 12C and the arm member 12D.
The bonding section 17 presses the resin sheet P1 being supplied to the printing apparatus 40 against the bonding layer N provided at the end of winding of the new resin sheet P2 to bond the resin sheet P1 and the resin sheet P2. This is a part for performing a so-called paper splicing process.
The bonding portion 17 of the present embodiment is disposed vertically above (+ Z side) the resin sheet P1 unwound from the roll portion 14. The bonding section 17 includes a cylindrical nip roll 17a and a nip roll drive section 17b that drives the nip roll 17a vertically downward (−Z side, the roll section 14B side shown in FIG. 2). The nip roll 17a is disposed above (+ Z side) the roll portion 14 so as to face the roll portion 14 (roll portion 14B in FIG. 2) disposed behind (+ X side) the frame portion 11. Have been. As the nip roll driving unit 17b, for example, a pneumatic cylinder or a hydraulic cylinder is used.

The cutting section 18 is a section for cutting the resin sheet P1 being supplied after a new resin sheet P2 is bonded to the resin sheet P1 being supplied. The cutting portion 18 is disposed on the rear side (+ X side) of the feed roll 16 held by the holding member 12 and on the front side (−X side) of the bonding portion 17. Further, the cutting portion 18 is disposed vertically above the resin sheet P unwound from the roll portion 14.
The cutting unit 18 includes a cutter 18a and a cutter driving unit 18b that drives the cutter 18a vertically downward, and drives the cutter driving unit 18b to move the cutter 18a vertically downward so that the resin sheet is moved. P can be cut. As the cutter driving unit 18b, for example, a pneumatic cylinder or a hydraulic cylinder is used.

The speed changing unit 19 is arranged closer to the printing device 40 (+ X side) than the bonding unit 17 and changes the transport speed of the resin sheet P1 on the rear side (printing device 40 side) of the speed changing unit 19. In other words, it is a mechanism that can change the transport speed of the resin sheet P1 on the front side (on the side of the bonding portion 17) before the speed changing portion 19. The speed variation unit 19 of the present embodiment is configured by a so-called compensator roll including a guide roll 19a, a variation roll 19b, a guide roll 19c, a variation roll driving unit 19d, and the like.
The guide roll 19a is a cylindrical roll disposed on the front side (−X side) of the speed fluctuation unit 19, and guides the resin sheet P1 unwound from the roll unit 14A to the fluctuation roll 19b. The guide roll 19a is rotatably held by the connection member (not shown) with respect to the frame portion 11.

The fluctuating roll 19b is a cylindrical roll disposed between the two guide rolls 19a and 19c, is rotatably held by the fluctuating roll driving unit 19d, and is driven vertically by the driving force of the fluctuating roll driving unit 19d. (Z direction). The moving roll 19b can change the conveying distance of the resin sheet P1 by moving in the vertical direction, and can temporarily change the conveying speed in the changing process.
The guide roll 19c is a columnar roll disposed on the rear side (−X side) of the speed fluctuation unit 19, and guides the resin sheet P1 abutting on the peripheral side surface of the fluctuation roll 19b to the in-feed mechanism unit 30 side. are doing. The guide roll 19c is rotatably held by the connection member (not shown) with respect to the frame portion 11.
The variable roll drive unit 19d is a part that drives the variable roll 19b in the vertical direction, and is configured by, for example, a pneumatic or hydraulic cylinder. The variable roll drive unit 19d is held by the connection member (not shown) with respect to the frame unit 11. Further, the variable roll drive unit 19d is connected to the control unit 21 and moves the variable roll 19b in the vertical direction based on the drive signal output from the control unit 21.

In the present embodiment, as shown in FIG. 2, the guide rolls 19a, 19c are arranged at the same height in the vertical direction along the front-rear direction (X direction). Further, the variable roll 19b disposed between the guide rolls 19a and 19c is disposed such that a position vertically above (+ Z side) the respective guide rolls is a neutral position T, and is vertically moved with respect to the neutral position T. (See arrow E in FIG. 2).
The resin sheet P1 unwound from the roll portion 14A is guided vertically upward (+ Z side) by the guide roll 19a, and is guided vertically downward (−Z side) by contacting the peripheral side surface of the variable roll 19b. The guide roll 19c is guided to the in-feed mechanism 30 disposed on the rear side (+ X side) of the supply device 10.

With the above configuration, the speed varying unit 19 can shorten the transport distance of the resin sheet P1 by moving the varying roll 19b to the lower side (−Z side) than the neutral position T. Then, in the process of changing the transport distance, the roll section 14A is controlled so that the tension applied to the resin sheet P1 is constant without changing the transport speed of the resin sheet P1 on the rear side (+ X side) of the speed varying section 19. , The transport speed of the resin sheet P1 on the front side (−X side) of the speed variation unit 19 can be temporarily reduced.
Further, the speed changing unit 19 can increase the transport distance of the resin sheet P1 by moving the changing roll 19b to the upper side (+ Z side) than the neutral position T. Then, in the process of changing the transport distance, the roll section 14A is controlled so that the tension applied to the resin sheet P1 is constant without changing the transport speed of the resin sheet P1 on the rear side (+ X side) of the speed varying section 19. By increasing the rotation speed, the transport speed of the resin sheet P1 on the front side (−X side) of the speed variation unit 19 can be temporarily increased.

The detection unit 20 is a sensor that detects a register mark M provided on the resin sheet P, and for example, a photoelectric sensor or the like is used. Two detection units 20 of the present embodiment are provided, and one detection unit 20A is provided for detecting the register mark M of the resin sheet P1 unwound from the roll unit 14, and the other detection unit 20A is provided. Reference numeral 20B is provided to detect a register mark M appearing on the outermost surface of the resin sheet P2 wound around the roll portion 14B in preparation for the next printing.
The detection unit 20A of the present embodiment is disposed on the rear side (+ X side) of the bonding unit 17 and on the front side (−X side) of the speed variation unit 19, and the detection unit 20B is configured of a roll unit 14B. It is arranged behind the resin sheet P2 wound up.

  As shown in FIG. 3, the control unit 21 includes a holding member driving unit 13, a roll driving unit 15 (15A, 15B), a nip roll driving unit 17b, a cutter driving unit 18b, a variable roll driving unit 19d, and a detecting unit 20 (20A, 20B) and the like, and is a control circuit that integrally controls each drive unit of the supply device 10 based on detection information of the detection unit 20 and the like, and includes, for example, a CPU and the like. The control unit 21 realizes various functions according to the present invention in cooperation with the hardware described above by appropriately reading and executing various programs stored in a storage unit (not shown).

As shown in FIG. 1, the infeed mechanism 30 is a device that conveys the resin sheet P sent from the supply device 10 to the printing device 40A. The infeed mechanism section 30 is provided with a plurality of rolls for transporting the resin sheet P, and is adjusted so that a change in the tension of the resin sheet P generated in the paper splicing process or the like in the supply apparatus 10 does not affect the printing apparatus 40 side. are doing.
The out-feed mechanism 31 is a device that conveys the resin sheet P sent from the printing device 40D to the winding device 50. The outfeed mechanism section 31 is provided with a plurality of rolls for transporting the resin sheet P, so that the fluctuation of the tension of the resin sheet P generated in the winding process of the winding device 50 or the like does not affect the printing device 40 side. I am adjusting.

As described above, in the present embodiment, four printing devices 40, that is, the printing devices 40A to 40D are provided. Among the printing apparatuses, the printing apparatus 40A is arranged at the forefront side (-X side, the side to which the resin sheet P is supplied) of the printing system 1, and is arranged side by side in the order of the printing apparatus 40B and the printing apparatus 40C. The printing device 40 </ b> D is disposed on the rearmost side (+ X side, the side on which the resin sheet P is wound up). Hereinafter, the printing device 40A will be described, but the same applies to the printing devices 40B to 40D.
The printing device 40A is a gravure printing machine that prints a specific pattern, character, or the like on the resin sheet P in a predetermined color. The printing device 40A includes a plurality of transport rolls 41A, a plate cylinder 42A, an impression cylinder 43A, a drying unit 44A, a cooling roll 45A, and the like.
The transport roll 41A is a cylindrical roll that regulates the transport direction of the resin sheet P until the resin sheet P sent from the in-feed mechanism 30 is sent from the printing device 40A.

The plate cylinder 42A is a columnar roll plate for printing a predetermined pattern or the like on the resin sheet P, and a plurality of cells (micro holes, not shown) corresponding to the pattern are provided on a peripheral side surface thereof. A predetermined pattern is printed on the resin sheet P by pressing the resin sheet P by the impression cylinder 43A against the plate cylinder 42A in which each cell is filled with ink.
The impression cylinder 43A is a cylindrical roll that sandwiches the resin sheet P with respect to the plate cylinder 42A and applies a predetermined pressure.
The drying unit 44A is a furnace that heats the ink attached to the resin sheet P printed by the plate cylinder 42A to evaporate the solvent.
The cooling roll 45A is a cylindrical hollow roll that cools the resin sheet P heated by the drying unit 44A, and circulates cooling water therein.

The winding device 50 is a device that is disposed on the rearmost side (−X side) of the printing system 1 and winds the resin sheet P sent out from the outfeed mechanism 31.
The winding device 50 includes two roll portions 51A and 51B, an adhesive portion 52, a cutting portion 53, and the like. The winding device 50 winds the resin sheet P sent out from the outfeed mechanism 31 by one of the rolls 51 (the roll 51A in FIG. 1). The resin sheet P can be continuously wound by bonding, cutting, or the like.

With the above configuration, the printing system 1 sends the resin sheet P supplied from the supply device 10 to the printing device 40 via the in-feed mechanism unit 30 as shown in FIG. After a predetermined pattern or the like is printed by -40D, it is sent to the winding device 50 via the outfeed mechanism 31. Then, in the winding device 50, the resin sheet P having a predetermined length is wound around the roll portion 51, and the printing process is completed.
Here, as shown in FIGS. 1 and 2, the supply device 10 is prepared for the next printing separately from the resin sheet P1 being supplied, so that printing (additional printing) on the resin sheet P can be continued. The resin sheet P2 is arranged in a state wound around the roll portion 14B. When the number of the supplied resin sheets P1 decreases, the supply device 10 performs a so-called paper splicing process of bonding the resin sheet P2 to the resin sheet P1.

  Here, in the conventional supply device, in the additional printing, the pattern already printed on the resin sheet being supplied to the printing apparatus is shifted from the pattern already printed on the newly supplied resin sheet. In some cases, splicing was performed. In this case, the intervals between the patterns printed at equal intervals on each resin sheet are not equal intervals between the resin sheet P1 and the resin sheet P2, and another pattern or the like printed on the resin sheet P2 is already present. In some cases, printing is performed in a state shifted from the printed pattern, and the design of the product is deteriorated. In order to correct this shift, it is conceivable to take measures such as providing an adjustment mechanism in the printing apparatus.However, after the paper splicing process, the resin sheet conveyed until the shift is corrected by the adjustment mechanism is considered. Cannot correct the misregistration of the pattern, and the portion may not be a product and may be discarded.

Therefore, in the paper splicing process, the supply device 10 of the present embodiment connects the two resin sheets while adjusting the position of the pattern of the resin sheet being supplied and the position of the pattern of the newly supplied resin sheet. As described above, the amount of resin sheet discarded due to misregistration of a picture or the like is reduced. Hereinafter, the details of the splicing process of the supply device 10 of the present embodiment will be described.
FIG. 4 is a diagram for explaining the operation of the supply device 10 during the splicing process.
FIG. 5 is a diagram illustrating the operation of the supply device 10 during the splicing process.
4 and 5 are views showing the vicinity of the roll section 14B of the supply device 10, and include a frame section 11, a holding member 12, a holding member driving section 13, a roll section 14A, a roll driving section 15A, and a feed roll. The illustration of 16 etc. is omitted.
FIG. 6 is a diagram for explaining the operation of the supply device 10 after the splicing process, and is a diagram corresponding to FIG. In addition, in each drawing of FIG. 6, illustration of the bonding part 17, the cutting part 18, and the detection part 20 is omitted.

As shown in FIG. 2, the control unit 21 of the supply device 10 rotates the roll driving unit 15A, unwinds the resin sheet P1 from the roll unit 14A, and sends out the resin sheet P1 to the printing device 40 side.
When the remaining amount of the resin sheet P1 remaining on the roll unit 14A becomes small, the control unit 21 drives the roll driving unit 15B to wind the resin sheet P2 as shown in FIG. The roll unit 14B is rotated (pre-drive). At this time, the control unit 21 controls the peripheral speed of the resin sheet P2 wound around the roll unit 14B on the peripheral side surface to be equal to the transport speed of the resin sheet P1 supplied to the printing device 40 side. Then, the roll driving unit 15B is driven.

After rotating the roll driving unit 15B, the control unit 21 detects the register mark M of the resin sheet P1 by the detection unit 20A and detects the register mark M of the resin sheet P2 by the detection unit 20B. Then, the register mark M provided on each resin sheet is positioned on a position S (the line connecting the rotation center of the nip roll 17a and the rotation center of the roll portion 14B, where the roll portion 14B and the bonding portion 17 face each other (FIG. 4). The timing of passing (a) (dashed line portion) is confirmed.
If the timing of passing the register mark M provided on the resin sheet P1 at the position S and the register mark M provided on the resin sheet P2 is different as shown in FIG.
The control unit 21 controls the variable roll driving unit 19d to move the variable roll 19b in the vertical direction to temporarily change the transport speed of the resin sheet P1 at the position S, as shown in FIG. In this way, the timing of the passage of the register mark M of the resin sheet P1 at the position S and the register mark M of the resin sheet P2 is substantially matched.

Note that the moving direction of the variable roll 19b can be appropriately determined according to the amount of deviation of the register mark M of each resin sheet. For example, when the passing of the register mark M1 of the resin sheet P1 at the position S is slower than the register mark M of the resin sheet P2, the moving roll 19b is moved vertically upward (+ Z side) to temporarily reduce the transport speed of the resin sheet P1. The timing of passing the register mark M of each resin sheet is made substantially the same.
When the registration mark M1 of the resin sheet P1 passes through the register mark M1 at the position S earlier than the registration mark M of the resin sheet P2, the moving roll 19b is moved vertically downward (−Z side), and the conveyance speed of the resin sheet P1 is increased. Is temporarily delayed so that the timing of passing the register mark M of each resin sheet is substantially matched.

Here, to make the timing of passing the register mark M of the resin sheet P1 at the position S substantially coincide with the timing of passing the register mark M of the resin sheet P2 means that the shift amount of the passing timing of each register mark M at the position S is zero. In other words, not only the case where the timing of passing each register mark M is completely matched, but also the case where the shift amount of the timing of passing each register mark M is within a range of 5 mm.
In addition, the amount of the timing deviation can be appropriately set within the above-described range according to the size, fineness, and the like of the pattern already printed on the resin sheet P, the pattern printed in the printing system 1, and the like. .

When the timing of passing the register mark M of the resin sheet P1 at the position S and the register mark M of the resin sheet P2 substantially match, the control unit 21 controls the variable roll driving unit 19d to move the variable roll 19b up and down. Stop moving. Thereby, the transport speed of the resin sheet P1 at the position S returns to the same speed as the circumferential speed on the circumferential side surface of the resin sheet P2 wound around the roll portion 14B.
In addition, the detection unit 20A and the detection unit 20B more smoothly match the registration mark M of the resin sheet P1 to be described later with the registration mark M of the resin sheet P2 at the bonding portion 17 (position S) substantially. Therefore, it is desirable to be arranged near the bonding portion 17.
Subsequently, the control unit 21 controls the nip roll driving unit 17b of the bonding unit 17 at a timing when the bonding layer N provided on the resin sheet P2 passes over the position S, as shown in FIG. The nip roll 17a is moved to the roll portion 14B side, and the resin sheet P1 and the resin sheet P2 are bonded via the bonding layer N.

As a result, the resin sheet P1 and the resin sheet P2 are adhered to each other in a state where the timing of the register marks M provided on the resin sheet P1 and the resin sheet P2 are substantially coincident with each other. Interval. Therefore, the supply device 10 can suppress as much as possible a pattern printed in the printing process after the splicing process from being printed in a state shifted from the already printed pattern, The amount of resin sheet discarded due to the displacement can be reduced.
Further, since the paper splicing process is performed by the bonding portion 17 after the feeding speed of the resin sheet P1 being supplied is made equal to the circumferential speed on the peripheral side surface of the resin sheet P2, the resin sheet P1 and the resin sheet P2 And the resin sheets can be smoothly brought into contact with each other and bonded without causing breakage, wrinkles, or the like.
The position of the adhesive layer N may be detected by the detection unit 20B, or may be separately provided by a detection unit.

Subsequently, the control unit 21 controls the cutter driving unit 18b of the cutting unit 18, moves the cutter 18a to the resin sheet P1 side, and cuts the resin sheet P1.
As described above, as shown in FIG. 5B, the splicing process of the resin sheet P1 and the resin sheet P2 is completed, and the resin sheet P2 adhered to the resin sheet P1 is unwound toward the printing device 40. start.

The roll portion 14A on which the resin sheet P1 has been wound is removed from the arm member 12A of the holding member 12, and the arm member 12A is attached with a roll portion on which a new resin sheet P1 has been wound in preparation for the next printing. Can be
Subsequently, the control unit 21 controls the holding member driving unit 13 to slightly move the holding member 12 in the direction of arrow D (counterclockwise in FIG. 6A) as shown in FIG. Rotate by 180 degrees.
By rotating the holding member 12 by 180 degrees, the roll portion 14B on which the resin sheet P2 has been wound up is moved from the rear side (+ X side) to the front side (-X side) as shown in FIG. 6B. Then, the resin sheet P2 comes into contact with the feed roll 16 and is sent out to the printing device 40 side.
Further, the control unit 21 controls the variable roll driving unit 19d to return the variable roll 19b to the neutral position T.
Then, when the remaining amount of the resin sheet P2 unwound from the roll portion 14B becomes small, the above-described operation is performed, and the paper splicing process is performed again.

  As described above, the supply device 10 of the present embodiment controls the speed varying unit 19 to vary the conveying speed of the resin sheet P1, and the register mark M of the resin sheet P1 and the register mark M of the resin sheet P2 in the bonding unit 17. After the passage timings are substantially matched, the bonding portion 17 is driven to bond the resin sheet P1 and the resin sheet P2. As a result, it is possible to minimize a situation in which a pattern printed in the additional printing process after the splicing process is printed in a state shifted from the already printed pattern. Thus, the amount of resin sheet discarded can be reduced.

  In addition, in the supply device 10 of the present embodiment, the speed fluctuation unit 19 is configured by a compensator roll, and is disposed closer to the printing device 40 than the bonding unit 17. Therefore, by moving the variable roll 19b from the neutral position T, the transport distance of the resin sheet P1 can be changed, and in the process of changing the transport distance, the resin on the rear side (+ X side) of the speed varying section 19 The transport speed of the resin sheet P1 on the front side (-X side) of the speed variation unit 19 can be temporarily changed without changing the transport speed of the sheet P1. Thereby, the conveying speed of the resin sheet P at the bonding portion 17 (position S) can be changed without changing the conveying speed of the resin sheet P on the printing device 40 side, which affects a printing process of additional printing. Thus, the timing of the register mark M of each resin sheet at the position S can be substantially matched.

  Further, when the bonding unit 17 is driven to bond the resin sheet P1 and the resin sheet P2, the feeding device 10 of the present embodiment adjusts the conveying speed of the resin sheet P1 to the resin sheet P2 wound around the roll unit 14B. Can be matched with the circumferential speed on the circumferential side surface. Thereby, each resin sheet can be smoothly brought into contact with each other and bonded without causing breakage, wrinkles, and the like.

  As described above, the embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made as in the modifications described below. Within technical scope. Further, the effects described in the embodiments merely enumerate the most preferable effects resulting from the present invention, and the effects according to the present invention are not limited to those described in the embodiments. Note that the above-described embodiment and the modified examples described later can be used in appropriate combinations, but detailed description is omitted.

(Modified form)
(1) In the above-described embodiment, an example has been described in which the detection unit 20B is configured by a photoelectric sensor and directly reads the register mark M provided on the resin sheet P2 to detect the position of the register mark M. It is not limited. For example, the detection unit 20B detects the amount of rotation of the rotation shaft of the roll unit 14B that has taken up the resin sheet P2, and based on the amount of rotation, registers the top surface of the resin sheet P2 that has been taken up by the roll unit 14B. The position of the mark M may be detected.
The configuration of the detection unit in this manner is particularly effective when, for example, the resin sheet P2 is a transparent sheet. Specifically, when the resin sheet P2 is a transparent sheet, the register mark M is detected by the photoelectric sensor as in the above-described embodiment. In some cases, the register mark M may be erroneously detected, or the register mark M on the outermost surface and the register mark M on the lower layer may not be properly detected. Therefore, as described above, if the position of the outermost register mark M is detected based on the rotation amount of the roll portion 14B, the above problem can be avoided. Note that, for example, a rotary encoder can be used to detect the rotation amount of the roll unit.

(2) In the above-described embodiment, an example has been described in which the processing apparatus includes four printing apparatuses 40A to 40D. However, the present invention is not limited to this. It may be. Further, instead of the printing device 40, an embossing device for processing unevenness such as embossing may be applied, or the printing device and the embossing device may be mixed.

DESCRIPTION OF SYMBOLS 1 Printing system 10 Supply device 11 Frame part 12 Holding member 13 Holding member drive part 14 Roll part 15 Roll drive part 16 Feed roll 17 Adhesion part 18 Cutting part 19 Speed fluctuation part 20 Detection part 21 Control part 30 In-feed mechanism part 31 Out Feed mechanism 40 Printing device 50 Winding device P Resin sheet

Claims (2)

A plurality of register marks are provided at equal intervals, and a band-shaped second workpiece in which the plurality of register marks are provided at equal intervals is joined to a strip-shaped first workpiece supplied to the processing apparatus. A workpiece supply device that supplies the workpiece to the processing device,
A first detection unit that detects the register mark of the first workpiece supplied to the processing device;
A roll section for unwinding the second workpiece;
A drive unit configured to rotate the roll unit around which the second workpiece is wound;
A second detection unit that detects the register mark of the second workpiece rotated by the driving unit;
An adhesion unit that adheres the second workpiece to the first workpiece and joins the first workpiece and the second workpiece;
A speed varying unit that varies a transport speed of the first workpiece in the bonding unit;
A control unit that controls driving of the bonding unit and driving of the speed varying unit based on detection information of the first detection unit and the second detection unit,
The control unit controls the speed variation unit, and after approximately matching the timing of passing the register mark of the first workpiece and the register mark of the second workpiece in the bonding unit, Driving the bonding unit to bond the first workpiece and the second workpiece;
A workpiece supply device. The workpiece supply device according to claim 1,
The speed change unit is configured by a compensator roll, and is provided on the processing device side than the bonding unit,
A workpiece supply device.

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