JP7055407B2 - Transfer device and its transfer method - Google Patents

Description

The present invention relates to a transfer device for transferring a transfer material to a substrate to be transferred using a plate cylinder and an impression cylinder, and a transfer method thereof.

Patent Document 1 describes an apparatus for transferring a transfer material to a substrate to be transferred.
The transfer device described in Patent Document 1 includes an embossing mechanism (corresponding to a transfer portion of the present invention) composed of an embossing cylinder (corresponding to a plate cylinder of the present invention) and an impression cylinder, and an embossing wound foil (corresponding to the present invention). It is provided with a transport means for transporting (corresponding to the transfer material of the present invention), a material layer (corresponding to the substrate to be transferred of the present invention), and the like.
Then, by superimposing the winding foil for embossing and the material layer and advancing forward to pass between the cylinder for embossing and the impression cylinder, the embossing metal plate (corresponding to the transfer surface of the present invention) of the embossing cylinder is used for embossing. The wound foil is embossed on the material layer (corresponding to the transfer of the present invention).

Further, by controlling the transport means to slow down and retreat the transport speed of the embossing wound foil between the end of one embossing and the next embossing, the previously embossed region in the embossing wound foil. And, by shortening the distance from the area to be embossed next, and reducing the amount of the area to be conveyed in the embossing winding foil in a state where it is not used for embossing, the waste of the embossing winding foil is reduced. There is.

Japanese Patent No. 3650197

According to the transfer device disclosed in Patent Document 1, the amount of the region to be conveyed in the embossing winding foil in a state where it is not used for embossing can be reduced to some extent, but the amount that can be reduced is small, and the embossing winding foil. Waste cannot be reduced very much.
Therefore, the present inventors have developed a transfer device capable of reducing the amount of the region to be transferred without being transferred in the transfer material and significantly reducing the waste of the transfer material.

The transfer apparatus developed by the present inventors will be described with reference to FIGS. 8 to 11.
FIG. 8 is a schematic view of a transfer unit of the transfer device developed by the present inventors, and the plate cylinder 100 and the impression cylinder 101 form a transfer unit 102. The plate cylinder 100 has a transfer surface 103, and the transfer surface 103 is provided on the embossed plate 104. The surfaces of the plate cylinder 100 other than the transfer surface 103 are non-transfer surfaces 105.
The plate cylinder 100 rotates in the counterclockwise direction at a constant speed according to the transfer speed, and does not rotate in the clockwise direction. The impression cylinder 101 rotates clockwise at the same speed as the plate cylinder 100, and does not rotate counterclockwise.
The transfer material 106 and the substrate 107 to be transferred are conveyed in the forward direction (arrow a direction) and the reverse direction (arrow b direction), respectively, by a step back roller (not shown).

The transfer device rotates the plate cylinder 100 and the impression cylinder 101 at the transfer speed in synchronization with each other, and rotates the step back roller (not shown) in the forward direction to convey the transfer material 106 and the substrate to be transferred 107 in the positive direction to the plate cylinder. Pass between 100 and the impression cylinder 101 in a superposed state. While the plate cylinder 100 makes one rotation, the transfer material 106 is transferred to the transfer base material 107 by the transfer surface 103 of the plate cylinder 100 and the peripheral surface of the impression cylinder 101.
When the transfer is completed, the transfer device reversely rotates a step back roller (not shown) during one rotation of the plate cylinder 100 to convey the transfer material 106 and the substrate 107 to be transferred in the opposite directions by a predetermined distance and step back. Then, the region used for the transfer of the transfer material 106 and the region to which the transfer material 106 of the transfer base material 107 is transferred are adjusted. Then, the transfer device rotates the step back roller (not shown) in the forward direction again to convey the transfer material 106 and the transfer base material 107 in the forward direction to transfer the second rotation of the plate cylinder 100.
The step back of the transfer material 106 and the transfer base material 107 includes control of acceleration and deceleration during transportation in the opposite direction. The details of the step back control will be described later.

The transfer of the transfer material 106 and the transfer base material 107 to the plate cylinder 100 and the transfer operation by the transfer surface 103 will be described with reference to FIG.
In FIG. 9, the transfer material 106 and the transfer base material 107 are provided with frames corresponding to the distances required for transfer of the transfer surface 103, respectively, so that the transfer and transfer operations can be easily understood. In the actual transfer device, the transfer material 106 and the transfer base material 107 are not provided with a frame. The frame of the shaded area of the substrate 107 to be transferred is a non-transferred area (a region used for other than transfer such as printing), and the frame of the blank area (hereinafter referred to as a blank area) is a transfer area.
The broken line is the transfer position 108 where the transfer material 106 and the transfer base material 107 are nipped on the transfer surface 103 of the plate cylinder 100 and the peripheral surface of the impression cylinder 101.

FIG. 9A shows a state before the start of transfer, and the transfer surface 103 is displaced from the transfer position 108.
From this state, the plate cylinder 100 rotates, and the transfer material 106 and the transfer base material 107 are synchronously conveyed in the positive direction (arrow a direction) at the same transfer rate.
As shown in FIG. 9B, when the transfer surface 103 moves to the transfer position 108, the transfer surface 103 transfers the transfer material 106 to the transfer base material 107. The region used for the transfer of the transfer material 106 is referred to as (1), and the region to which the transfer material 106 of the transfer base material 107 is transferred is referred to as (A).
As shown in FIG. 9C, when the non-transfer surface 105 of the plate cylinder 100 passes through the transfer position 108, the transfer material 106 is conveyed in the opposite direction (arrow b direction) by a predetermined distance and stepped back to perform the transfer material 106. Is returned by the specified distance. After that, by transporting the transfer material 106 in the positive direction, as shown in FIG. 9D, the transfer surface 103 is set to the transfer position 108 at the second rotation of the plate cylinder 100.

At this time, the region (2) of the transfer material 106 is made to match the transfer position 108, and the region (2) is used for transfer of the transfer surface 103. The region (2) of the transfer material 106 is a region adjacent to the upstream side in the transport direction of the region (1) of the transfer material 106 used for transfer in the first rotation of the plate cylinder 100.
In the state shown in FIG. 9C, the substrate 107 to be transferred is conveyed in the reverse direction, stepped back, and returned by a predetermined distance. The return distance of the transfer base material 107 is different from the return distance of the transfer material 106. After that, by transporting the transfer base material 107 in the positive direction in synchronization with the transfer material 106, as shown in FIG. 9D, when the transfer surface 103 moves to the transfer position 108 in the second rotation of the plate cylinder 100, The blank region (B) of the substrate 107 to be transferred is made to match the transfer position 108, and the transfer material 106 is transferred to the blank region (B). The blank region (B) of the transfer base material 107 is closest to the upstream side in the transport direction of the region (A) of the transfer base material 107 on which the transfer material 106 is transferred on the transfer surface 103 in the first rotation of the plate cylinder 100. It is a blank area.

As shown in FIG. 9E, when the non-transfer surface 105 of the plate cylinder 100 passes through the transfer position 108, the transfer material 106 is conveyed in the opposite direction by a predetermined distance and stepped back, and the transfer material 106 is transferred by a predetermined distance. return. After that, by transporting the transfer material 106 in the positive direction, as shown in FIG. 9F, the transfer surface 103 is set to the transfer position 108 at the third rotation of the plate cylinder 100.
At this time, the region (3) of the transfer material 106 is made to match the transfer position 108, and the region (3) is used for transfer of the transfer surface 103. The region (3) of the transfer material 106 is a region adjacent to the upstream side in the transport direction of the region (2) of the transfer material 106 used for transfer in the second rotation of the plate cylinder 100.
In the state shown in FIG. 9E, the substrate 107 to be transferred is conveyed in the opposite direction, stepped back, and returned by a predetermined distance. After that, by transporting the transfer base material 107 in the positive direction in synchronization with the transfer material 106, as shown in FIG. 9F, when the transfer surface 103 moves to the transfer position 108 at the third rotation of the plate cylinder 100, The blank region (C) of the substrate 107 to be transferred is made to match the transfer position 108, and the transfer material 106 is transferred to the blank region (C). The blank region (C) of the transfer base material 107 is closest to the upstream side in the transport direction of the region (B) of the transfer base material 107 on which the transfer material 106 is transferred on the transfer surface 103 in the second rotation of the plate cylinder 100. It is a blank area.

The transfer control of the transfer material 106 will be described with reference to FIGS. 10 and 11. FIG. 10 is a schematic diagram of transfer control of the transfer material of the first and second rotations of the plate cylinder of the transfer device developed by the present inventors, and FIG. 11 is a plate cylinder of the transfer device developed by the present inventors. It is a schematic diagram of the transfer control of the transfer material from the 1st rotation to the 6th rotation.
As shown in FIG. 10, the distance required for transfer of the transfer surface 103 is defined as L. L is the distance obtained by adding the minimum margin required for transfer to the top-bottom size (length in the rotation direction) of the transfer surface 103.
The distance in the rotation direction of the plate cylinder 100 of the frame shown in FIGS. 9, 10 and 11 is L.
When the plate cylinder 100 shifts from the first rotation to the second rotation, that is, after the transfer by the transfer surface 103 of the first rotation is completed, the speed of the transfer material 106 conveyed in the positive direction at the transfer speed is reduced. And stop. After that, the transfer material 106 steps back, and the step back is as follows.
The stopped transfer material 106 is accelerated in the reverse direction (return direction) to a predetermined transfer speed and transferred at a predetermined transfer speed. After that, in order to stop the step back, the speed is reduced from the predetermined transport speed, and the transport in the opposite direction is stopped at a predetermined distance. Transporting a predetermined distance including acceleration and deceleration in the opposite direction is step back. The distance from the stop to the predetermined transport speed is defined as the acceleration distance during step back, and the distance from the transport speed to the stop is defined as the deceleration distance during step back. The transport during the step back may be switched to deceleration immediately after accelerating to a predetermined transport speed without providing a distance for transport at a predetermined transport speed.

Then, by the time the transfer is started on the transfer surface 103 at the second rotation of the plate cylinder 100, the stopped transfer material 106 is accelerated and conveyed in the positive direction at the transfer speed.
The distance from the state in which the transfer material 106 is conveyed in the positive direction at the transfer rate to the deceleration and stop (deceleration distance after transfer) is defined as β. Further, the distance (acceleration distance before transfer) until the transfer material 106 stopped after stepping back is accelerated in the positive direction to reach the transfer speed is defined as α.
The deceleration distance β after transfer and the acceleration distance α before transfer are the characteristics of the drive motor that rotationally drives the step back roller (not shown), the transport speed, the return distance by step back, and the length of the non-transfer surface 105 of the plate cylinder 100. It is a parameter determined by.
The deceleration distance β after transfer and the acceleration distance α before transfer are automatically determined using a known control device recommended by the characteristics of the drive motor.
Further, the acceleration distance during step back, the deceleration distance during step back, and the transfer speed during step back for transporting the transfer material 106 in the reverse direction (return direction) are also set for the deceleration distance β after transfer and the acceleration before transfer. It is determined in the same way as the distance α.

The distance for transporting the transfer material 106 in the reverse direction in one step back is defined as a return distance R10, and the return distance R10 will be described below.
As shown in FIG. 10, the region (2) of the transfer material 106 used for transfer by the transfer surface 103 in the second rotation of the plate cylinder 100 is the transfer used by the transfer surface 103 in the first rotation of the plate cylinder 100. It is a region adjacent to the upstream side of the region (1) of the material 106 in the transport direction.
Therefore, since the second rotation of the region (1) is started from the upstream position (transfer end position) in the transport direction, the return distance R10 can be derived by α + β.
In FIG. 10, since α = 2L and β = 2L, the return distance R10 is a distance of 4L. Further, the transport distance R in the positive direction in one rotation of the plate cylinder is a distance of 5 L.

As shown in FIG. 11, the region (3) of the transfer material 106 used for the transfer in the third rotation of the plate cylinder 100 is adjacent to the upstream side in the transport direction of the region (2) used for the transfer in the second rotation. It is an area.
The region (4) of the transfer material 106 used by the plate cylinder 100 for transfer at the fourth rotation is a region adjacent to the upstream side in the transport direction of the region (3) used for transfer at the third rotation.
The region (5) of the transfer material 106 used by the plate cylinder 100 for transfer at the fifth rotation is a region adjacent to the upstream side in the transport direction of the region (4) used for transfer at the fourth rotation.
The region (6) of the transfer material 106 used by the plate cylinder 100 for transfer at the sixth rotation is a region adjacent to the upstream side in the transport direction of the region (5) used for transfer at the fifth rotation.
Further, when the plate cylinder 100 shifts from the second rotation to the third rotation, shifts from the third rotation to the fourth rotation, shifts from the fourth rotation to the fifth rotation, and shifts from the fifth rotation to the sixth rotation. In some cases, the return distance R10 is a distance of 4L.
In FIG. 11, α and β are set to 0 (α = 0, β = 0), and the figure is simplified for easy understanding.
Similarly, in the case of the sixth and subsequent rotations of the plate cylinder 100, by repeating the step back at the return distance R10 = 4L for each rotation of the plate cylinder 100, transfer without waste is always performed on the transfer material 106.

According to the transfer apparatus developed by the present inventors, the region adjacent to the upstream side in the transport direction of the region used for transfer of the transfer material 106 is sequentially used for transfer, so that the transfer material 106 can be effectively used without wasting it. can.

When transferring with the transfer device developed by the present inventors, the following problems may occur.
When the transfer material 106 is stepped back and the transfer direction is switched between the forward direction and the reverse direction, the rotation direction and the rotation speed of the step back roller (not shown) are controlled, but when the transfer direction of the transfer material 106 is switched, the illustration is shown. No The rotational inertia force of the step back roller may cause the rotation speed control and stop position control of the step back roller (not shown) to become unstable, and the behavior of the transfer material 106 may become unstable.
Further, when the transfer direction of the transfer material 106 is switched, an inertial force acts on the transfer material 106 in the transfer direction before the switching. Due to this inertial force, if the transfer material 106 has poor followability to changes in forward and reverse rotation of a step back roller (not shown) that conveys the transfer material 106, the transfer material 106 may be distorted or torn. In some cases, the transfer of the transfer material 106 was not stable.

Since the behavior of the transfer material 106 is unstable and the transfer is not stable, transfer errors occur and the yield is deteriorated. This occurs every time the transfer material 106 is stepped back.

The present invention has been made to solve the above problems, and an object of the present invention is to make effective use of the transfer material without wasting it, and to reduce the number of step backs of the transfer material. It is an object of the present invention to provide a transfer apparatus and a transfer method thereof capable of stabilizing transport and improving yield.

The transfer device of the present invention includes a transfer unit, a transfer material transfer unit that conveys the transfer material to the transfer unit, a transfer base material transfer unit that conveys the transfer base material to the transfer unit, and a control unit. The transfer unit has an impression cylinder and a plate cylinder, and the plate cylinder has a transfer surface in contact with the peripheral surface of the impression cylinder and a non-transfer surface not in contact with the peripheral surface of the impression cylinder. The material transfer unit has a step back roller, and by rotating the step back roller in the forward direction, the transfer material is conveyed in the forward direction, and by rotating the step back roller in the reverse direction, the transfer material is reversed. The transfer base material transfer unit has a step back roller, and by rotating the step back roller in the forward direction, the transfer base material is conveyed in the forward direction and the step back roller is conveyed. By rotating in the reverse direction, the transfer base material is conveyed in the opposite direction, and the step back roller of the transfer material transfer unit and the step back roller of the transfer base material transfer unit are rotated in the forward direction, and the transfer material and the transfer material are transferred. By transporting the transfer base material in the forward direction, the transfer material is transferred to the transfer base material on the transfer surface of the plate cylinder and the peripheral surface of the impression cylinder, and the step back roller of the transfer material transfer unit. By rotating the step back roller of the transfer base transfer unit in the reverse direction, the transfer material and the transfer base material are passed through the gap between the non-transfer surface of the plate cylinder and the peripheral surface of the impression cylinder. In a transfer device that transports in the opposite direction and steps back
The plate cylinder of the transfer unit has only one transfer surface, and one rotation of the plate cylinder performs one transfer, and the control unit continuously conveys the transfer material in the positive direction. In this state, the transfer operation of one cycle in which the plate cylinder is rotated arbitrarily a plurality of times to perform the transfer multiple times is repeated a plurality of times in succession, and the transfer of one cycle is completed, and the next cycle is completed. The region of the transfer material used for the first transfer in the next cycle is adjacent to the region upstream in the transport direction of the region used for the first transfer in the previous cycle. It is a transfer device characterized by controlling a step back for transporting a transfer material in the reverse direction.

In the transfer device of the present invention, when the transfer of one cycle is completed and the transfer of the next cycle is performed, the control unit is within the used range of the transfer material used for the transfer by the previous cycle. It is determined whether there is a region that can be used for transfer, and if so, the region of the transfer material used for the first transfer in the next cycle is the region used for the first transfer in the previous cycle. The step back for transporting the transfer material in the opposite direction is controlled so that the region is adjacent to the upstream side in the transport direction, and if not, the region of the transfer material used for the first transfer in the next cycle is the region. It can be a transfer device that controls a step-back for transporting the transfer material in the reverse direction so as to be a region adjacent to the upstream side in the transport direction of the region used for the last transfer in the previous cycle.

In the transfer device of the present invention, the control unit is used for the transfer when the number of repeated cycles matches the number of transferable times within the distance between the transfer surfaces corresponding to the outer peripheral length of the plate cylinder. The transfer apparatus may be such that it is determined that there is no possible region, and if they do not match, it is determined that there is a region that can be used for the transfer.

In the transfer device of the present invention, the control unit can be a transfer device that controls a step back for transporting the transfer base material in the reverse direction for each rotation of the plate cylinder.

The transfer method of the transfer device of the present invention comprises a plate cylinder and an impression cylinder having only one transfer surface, a transfer unit that transfers the transfer material to the substrate to be transferred, and a transfer material by forward rotation and reverse rotation. In a transfer method of a transfer device including a step back roller that conveys in the forward and reverse directions and a step back roller that conveys the substrate to be transferred in the forward and reverse directions by forward rotation and reverse rotation.
In a state where the transfer material is continuously conveyed in the positive direction, rotating the plate cylinder a plurality of times to perform the transfer a plurality of times is defined as one cycle, and the one cycle is continuously repeated a plurality of times. Each time the transfer operation by one rotation of the plate cylinder is completed, it is determined whether the number of rotations of the plate cylinder matches the number of rotations of the plate cylinder in one cycle, and the transfer method does not match. In that case, the transfer material is continuously transported in the forward direction, the transfer of the cycle is continued, and if they match, the step back roller is rotated in the reverse direction to transport the transfer material in the reverse direction and step back. Then, the transfer of the next cycle is completed so that the transfer of the next cycle is performed, and the distance for transporting the transfer material in the reverse direction is set to the region of the transfer material used for the first transfer of the next cycle. It is a transfer method of a transfer apparatus, characterized in that the distance is set to a region adjacent to the upstream side in the transport direction of the region used for the first transfer in the cycle of.

In the transfer method of the transfer device of the present invention, when the transfer of one cycle is completed and the transfer of the next cycle is performed, the transfer is performed within the used range of the transfer material used for the transfer by the previous cycle. It is determined whether or not there is a usable area, and if it is determined that there is, the step back roller is rotated in the reverse direction to transport the transfer material in the reverse direction, step back, and transport in the opposite direction. The distance to be performed is defined as the distance that the region of the transfer material used for the first transfer in the next cycle is adjacent to the region upstream in the transport direction of the region used for the first transfer in the previous cycle, and it is determined that there is no region. If so, the step back roller is rotated in the reverse direction to transport the transfer material in the opposite direction to step back, and the distance to be conveyed in the opposite direction is used for the first transfer in the next cycle. Can be used as a transfer method of a transfer device having a distance such that the region of 1 is adjacent to the region upstream in the transport direction of the region used for the last transfer in the previous cycle.

In the transfer method of the transfer device of the present invention, it can be used for the transfer when the number of repeated cycles matches the number of transferable times within the distance between the transfer surfaces corresponding to the outer peripheral length of the plate cylinder. It is possible to use a transfer method of a transfer device in which it is determined that there is no region, and if they do not match, it is determined that there is a region that can be used for the transfer.

In the transfer method of the transfer device of the present invention, the transfer device transfer method in which the step back roller is rotated in the reverse direction for each rotation of the plate cylinder to convey the substrate to be transferred in the reverse direction and step back. Can be.

According to the transfer device and the transfer method thereof of the present invention, the transfer material can be effectively used without wasting it, the number of step backs can be reduced, the transfer of the transfer material can be stabilized, and the yield can be improved.

It is an overall front view which shows an example of embodiment of the transfer apparatus of this invention. It is a schematic diagram of the plate cylinder of the transfer part of this invention shown in FIG. It is explanatory drawing of the transfer operation by the transfer material and the transfer base material of the transfer apparatus of this invention, and the transfer surface. It is a schematic diagram of the transfer control of the transfer material from the 1st cycle of the plate cylinder to the 2nd cycle of the plate cylinder of the embodiment. It is a schematic diagram of the transfer control of the transfer material from the 1st cycle of the plate cylinder to the 8th cycle of the plate cylinder of the embodiment. It is a chart comparing the transfer state of the transfer material and the substrate to be transferred of the transfer device of the present invention, and the transfer state of the transfer material and the substrate to be transferred of the transfer device developed by the present inventors. It is a flowchart of the control method of the transfer apparatus of this invention. It is a schematic diagram of the transfer part of the transfer apparatus developed by the present inventors. It is explanatory drawing of the transfer operation by the transfer material and the transfer base material of the transfer apparatus developed by the present inventors, and the transfer surface. It is a schematic diagram of the transfer control of the transfer material of the 1st rotation and the 2nd rotation of the plate cylinder of the transfer apparatus developed by the present inventors. It is a schematic diagram of the transfer control of the transfer material from the 1st rotation to the 6th rotation of the plate cylinder of the transfer device developed by the present inventors.

The overall configuration of the transfer apparatus of the present invention will be described with reference to FIG. FIG. 1 is an overall front view showing an example of an embodiment of the transfer device of the present invention.
The transfer device 1 of the present invention includes a transfer unit 2, a transfer material supply unit 3, a transfer material recovery unit 4, a control unit 5, a transfer base material transfer unit (not shown), and the like, and supplies the transfer material. The transfer material transport unit is composed of the unit 3 and the transfer material recovery unit 4. The transfer unit 2, the transfer material supply unit 3, the transfer material recovery unit 4, and the control unit 5 are provided in the apparatus main body 1a. The control unit 5 is not limited to the device main body 1a, and may be provided in other than the device main body 1a.
The transfer unit 2 has a plate cylinder 20 and an impression cylinder 21.

As shown in FIG. 2, the plate cylinder 20 has a transfer surface 22, and the transfer surface 22 is provided on the embossed plate 23 which is shorter than the entire circumference of the plate cylinder 20. The surfaces of the plate cylinder 20 other than the transfer surface 22 are non-transfer surfaces 24. That is, the plate cylinder 20 has only one transfer surface 22.

As shown in FIG. 1, the plate cylinder 20 and the impression cylinder 21 are synchronously rotated at a constant speed according to the transfer speed by one drive motor (not shown). The plate cylinder 20 rotates counterclockwise and does not rotate clockwise. The impression cylinder 21 rotates in the clockwise direction and does not rotate in the counterclockwise direction.
The transfer material 6 supplied from the transfer material supply unit 3 and the transfer base material 7 conveyed by the transfer base material transfer unit (not shown) are conveyed between the plate cylinder 20 and the impression cylinder 21. The transfer material 6 and the substrate 7 to be transferred are nipped between the transfer surface 22 of the plate cylinder 20 and the peripheral surface of the impression cylinder 21, and the non-transfer surface 24 of the plate cylinder 20 and the peripheral surface of the impression cylinder 21 have a gap. The transfer material 6 and the transfer base material 7 are conveyed through the gap.
By niping the transfer material 6 and the transfer base material 7 on the transfer surface 22 of the plate cylinder 20 and the peripheral surfaces of the impression cylinder 21, the transfer material 6 is transferred to the transfer base material 7.
The control unit 5 is, for example, a CPU (Central Processing Unit) that controls the transfer of the transfer material 6 and the transfer base material 7 and the rotation of the plate cylinder 20 and the impression cylinder 21.

The transfer unit 2 of the embodiment is provided with a heating mechanism (not shown) in the plate cylinder 20, and the transfer material 6 is heated by heating the transfer surface 22 of the plate cylinder 20 to, for example, about 150 ° C. to 200 ° C. This is a transfer unit that is thermally transferred to the substrate 7 to be transferred. The plate cylinder 20 may be used as a transfer portion that does not heat. In the case of a transfer portion that does not heat the plate cylinder 20, a gluing device is provided on the upstream side in the transport direction of the plate cylinder, and glue is applied to the substrate to be transferred for transfer.

The transfer material supply unit 3 conveys the transfer material 6 toward the plate cylinder 20 and the impression cylinder 21 of the transfer unit 2.
The transfer material supply unit 3 is provided on the unwinding shaft 30, the feed roller 31 on the supply side provided on the downstream side of the unwind shaft 30 in the supply direction, and the feed roller 31 on the supply side on the downstream side in the supply direction. It has a shock absorber 32 on the supply side and a step back roller 33 on the supply side provided on the downstream side of the shock absorber 32 on the supply side in the supply direction.
A roll-shaped transfer material 6 is attached to the unwinding shaft 30.
The feed roller 31 on the supply side is rotationally driven only in the unwinding direction (counterclockwise direction) by a drive motor (not shown), and the transfer material 6 is wound around the outer peripheral surface. A nip roller 34 is provided at least at one position within the winding range of the transfer material 6 of the feed roller 31 on the supply side, and the transfer material 6 is sandwiched between the feed roller 31 and the nip roller 34 on the supply side.

By rotationally driving the feed roller 31 on the supply side, the roll-shaped transfer material 6 attached to the unwinding shaft 30 is unwound and conveyed toward the shock absorber 32 on the supply side.
The shock absorber 32 on the supply side is a loop vacuum that holds the transfer material 6 in the box 35 in a downward U-shape using vacuum pressure.
The step back roller 33 on the supply side is rotated in the reverse direction of the forward rotation by a drive motor (not shown), and the transfer material 6 sent out from the shock absorber 32 on the supply side is wound around the outer peripheral surface. A nip roller 36 is provided at least at one position within the winding range of the transfer material 6 of the step back roller 33 on the supply side, and the transfer material 6 is sandwiched between the step back roller 33 and the nip roller 36 on the supply side to hold the transfer material 6. It is designed so that it can be transported in the direction opposite to the forward direction.

The transfer material recovery unit 4 collects the transfer material 6 other than the region used for transfer in the transfer unit 2, that is, the transfer material 6 not used for transfer.
The transfer material recovery unit 4 has a recovery-side step back roller 40, a recovery-side shock absorber 41 provided downstream of the recovery-side step back roller 40 in the recovery direction, and a recovery-side shock absorber 41 in the recovery direction. It has a feed roller 42 on the collection side provided on the downstream side and a take-up shaft 43 provided on the downstream side in the collection direction of the feed roller 42 on the collection side.
The step back roller 40 on the recovery side is rotated in the reverse direction of the forward rotation by a drive motor (not shown), and the transfer material 6 not used for transfer is wound around the outer peripheral surface.

A nip roller 44 is provided at least at one position within the winding range of the transfer material 6 of the step back roller 40 on the collection side, and the transfer material 6 not used for transfer is sandwiched between the step back roller 40 and the nip roller 44 on the collection side. However, it is possible to carry in the direction opposite to the forward direction.
The shock absorber 41 on the recovery side is a loop vacuum that holds the transfer material 6 that was not used for transfer in a downward U-shape in the box 45 by using vacuum pressure.
The feed roller 42 on the recovery side is rotationally driven only in the recovery direction (counterclockwise direction) by a drive motor (not shown), and the transfer material 6 not used for transfer is wound around the outer peripheral surface.

A nip roller 46 is provided at least at one position within the winding range of the transfer material 6 of the feed roller 42 on the collection side, and the transfer material 6 not used for transfer is sandwiched between the feed roller 42 on the collection side and the nip roller 46.
By rotationally driving the feed roller 42 on the collection side, the transfer material 6 held in the shock absorber 41 on the collection side and not used for transfer is conveyed toward the take-up shaft 43.
The take-up shaft 43 is rotationally driven only in the take-up direction (counterclockwise direction) by a drive motor (not shown), and the transfer material 6 not used for transfer is taken up and collected.
The step back roller 33 on the supply side and the step back roller 40 on the recovery side are synchronously rotated in the forward direction at the time of transfer, and the transfer material 6 is conveyed in the positive direction.

When adjusting the position of the region used for transfer of the transfer material 6, the step back roller 33 on the supply side and the step back roller 40 on the recovery side are synchronously repeated forward rotation and reverse rotation to rotate the transfer material 6 in the forward direction. Intermittent transportation is performed in the opposite direction. This operation will be described in detail later.
The shock absorber 32 on the supply side absorbs the tension change that occurs in the transfer material 6 between the feed roller 31 on the supply side and the step back roller 33 on the supply side when the transfer material 6 is conveyed in the opposite direction.
The shock absorber 41 on the recovery side absorbs the tension change that occurs in the transfer material 6 between the feed roller 42 on the recovery side and the step back roller 40 on the recovery side when the transfer material 6 is conveyed in the opposite direction.

The transfer base material 7 is conveyed toward the transfer unit 2 from a paper feeding device of a transfer base material transfer unit (not shown) provided at a location away from the transfer device 1, and the transfer material 6 is transferred by the transfer unit 2. The transferred substrate 7 is collected by a paper ejection device of a transfer substrate transport unit (not shown) provided at a place away from the transfer device 1.
A printing unit is provided between the transfer device 1 and the paper feeding device of the transfer base material transfer unit (not shown), and after printing on the transfer base material 7, the transfer base material 7 is transferred to the transfer unit 2 and printed. It may be transferred to.
Further, a printing unit may be provided between the transfer device 1 and the paper ejection device of the transfer base material transport unit (not shown) so that printing can be performed on the transfer base material 7 that has already been transferred.

In order to adjust the position of the transferred region of the transfer base material 7 with respect to the rotation of the plate cylinder 20, on the upstream side in the transfer direction and the downstream side in the transfer direction with the transfer portion 2 as a boundary in the transfer path of the transfer base material 7. For example, a paper feeding device and a paper discharging device of a transfer base material transporting portion (not shown) are provided with a step back roller on the upstream side and a step back roller on the downstream side, respectively, which are not shown.
The upstream step back roller and the downstream step back roller (not shown) are synchronously rotated forward and reverse, and convey the substrate 7 to be transferred in the forward direction (arrow a direction) and the reverse direction (arrow b direction). By doing so, the position of the region where the transfer material 6 of the transfer base material 7 is transferred is adjusted.
The transfer material 6 and the substrate 7 to be transferred control the step back roller 33 on the supply side, the step back roller 40 on the recovery side, the step back roller on the upstream side and the step back roller on the downstream side (not shown) by the control unit 5. Is transported intermittently.

The transfer material 6 is mainly composed of four layers of a film layer, a peeling layer, a foil and glue, and gold leaf or silver leaf is used as the foil. The transfer material 6 is not limited to this material.
As the transfer base material 7, a seal tack paper composed of a surface base material, an adhesive, and a release paper is mainly used. The substrate 7 to be transferred is not limited to this one.
The transfer by the transfer unit 2 is performed as follows.
The transfer material 6 and the transfer base material 7 are transferred between the plate cylinder 20 and the impression cylinder 21 in a state where the glue layer of the transfer material 6 and the surface base material of the transfer base material 7 are in contact with each other. , The transfer material 6 and the transfer base material 7 are nipped on the heated transfer surface 22 and the impression cylinder 21 of the plate cylinder 20.
The layer of glue is melted by the heated transfer surface 22, and the region of the transfer material 6 in contact with the transfer surface 22 is glued to the surface substrate of the transfer base material 7. When the transfer material 6 and the substrate 7 to be transferred are transported and released from the nip of the heated transfer surface 22, the temperature drops and the glue solidifies.

After the glue has solidified, the foil of the transfer material 6 has a region glued to the surface base material of the transfer base material 7 by a peeling roller (not shown) provided between the transfer portion 2 and the step back roller 40 on the recovery side. Separated into unglued areas.
The foil in the non-glued region is conveyed toward the take-up shaft 43 by the step back roller 40 on the recovery side together with the film layer and the release layer of the transfer material 6. When the foil in the unglued region is separated, only the glued foil remains on the substrate 7 to be transferred, and the transfer is completed.
The transfer unit 2 can be a transfer unit that does not heat the plate cylinder 20, but the transfer unit that does not heat the plate cylinder 20 uses glue applied to the substrate to be transferred on the upstream side of the transfer unit to transfer the transfer material. This is a method of gluing to a substrate to be transferred. After applying glue to the substrate to be transferred, transfer is performed by niping the substrate to be transferred and the transfer material on the transfer surface of the plate cylinder and the peripheral surface of the impression cylinder. Therefore, when a transfer unit that does not heat the plate cylinder 20 is used, a gluing device is provided on the upstream side of the transfer unit.

Based on FIG. 3, the transfer of the transfer material 6 and the transfer base material 7 to the plate cylinder 20 and the transfer operation by the transfer surface 22 will be described.
In FIG. 3, the transfer material 6 and the transfer base material 7 are provided with frames corresponding to the distances required for transfer of the transfer surface 22, respectively, to facilitate the transfer and transfer operations. In the actual transfer device, the transfer material 6 and the transfer base material 7 are not provided with a frame. The frame of the shaded area of the substrate 7 to be transferred is a non-transferred area (a region used for other than transfer such as printing), and the frame of the blank area (hereinafter referred to as a blank area) is a transfer area. The non-transferred region (hatched region in FIG. 3) of the substrate 7 to be transferred is determined by the design of the product manufactured by the transfer device.
The broken line is the transfer position 25 where the transfer material 6 and the transfer base material 7 are nipped on the transfer surface 22 of the plate cylinder 20 and the peripheral surface of the impression cylinder 21.

FIG. 3A shows a state before the start of transfer, and the transfer surface 22 is displaced from the transfer position 25.
From this state, the plate cylinder 20 rotates, and the transfer material 6 and the transfer base material 7 are synchronously conveyed in the positive direction (arrow a direction) at the same transfer rate.
As shown in FIG. 3B, when the transfer surface 22 moves to the transfer position 25 in the first rotation of the plate cylinder 20, the transfer surface 22 transfers the transfer material 6 to the transfer substrate 7 for the first time. The region used for the transfer of the transfer material 6 is referred to as (1), and the region to which the transfer material 6 of the substrate 7 to be transferred is transferred is referred to as (A).

As shown in FIG. 3C, after the transfer of the first rotation of the plate cylinder 20 is completed, when the non-transfer surface 24 of the plate cylinder 20 passes through the transfer position 25, the transferred substrate 7 is moved in the opposite direction (arrow b direction). Transport and step back. That is, the transferred substrate 7 is conveyed in the opposite direction by a predetermined distance through the gap between the non-transfer surface 24 of the plate cylinder 20 and the peripheral surface of the impression cylinder 21. This operation is step back. It should be noted that this step back includes control of acceleration and deceleration during transportation in the reverse direction. The details of the step back control will be described later.
At this time, the transfer material 6 continues to be conveyed in the positive direction.
After the transfer base material 7 is conveyed in the opposite direction by a predetermined distance, the transfer base material 7 is conveyed in the forward direction in synchronization with the transfer material 6. As shown in FIG. 3D, the distance conveyed in the reverse direction of the substrate 7 to be transferred (return distance by step back) is the distance transferred when the transfer surface 22 moves to the transfer position 25 in the second rotation of the plate cylinder 20. Make sure that the blank area (B) of the transfer substrate 7 matches the transfer position 25. The blank region (B) of the transfer base material 7 is closest to the upstream side in the transport direction of the region (A) of the transfer base material 7 to which the transfer material 6 is transferred on the transfer surface 22 in the first rotation of the plate cylinder 20. It is a blank area.

As shown in FIG. 3D, when the transfer surface 22 moves to the transfer position 25 in the second rotation of the plate cylinder 20, the transfer material 6 is transferred to the blank region (B) of the substrate 7 to be transferred. At this time, the region used for the transfer of the transfer material 6 is referred to as (2).
As shown in FIG. 3E, after the second rotation of the plate cylinder 20 is completed, when the non-transfer surface 24 of the plate cylinder 20 passes through the transfer position 25, the transferred substrate 7 is conveyed in the reverse direction and stepped back. do. At this time, the transfer material 6 continues to be conveyed in the positive direction.
After the transfer base material 7 is conveyed in the opposite direction by a predetermined distance, the transfer base material 7 is conveyed in the forward direction in synchronization with the transfer material 6. The return distance of the substrate 7 to be transferred by step back is the same as the above description, and as shown in FIG. 3F, when the transfer surface 22 moves to the transfer position 25 at the third rotation of the plate cylinder 20, the transfer group is transferred. Make sure that the blank area (C) of the material 7 matches the transfer position 25. The blank region (C) of the substrate 7 to be transferred is closest to the upstream side in the transport direction of the region (B) of the substrate 7 to be transferred on which the transfer material 6 is transferred on the transfer surface 22 in the second rotation of the plate cylinder 20. It is a blank area.

As shown in FIG. 3F, when the transfer surface 22 moves to the transfer position 25 at the third rotation of the plate cylinder 20, the transfer material 6 is transferred to the blank region (C) of the substrate 7 to be transferred. At this time, the region used for the transfer of the transfer material 6 is referred to as (3).
That is, in a state where the transfer material 6 is continuously conveyed in the positive direction, the plate cylinder 20 is rotated three times, and the transfer base material 7 is stepped back for each rotation of the plate cylinder 20, so that the transfer material 6 is transferred. Is transferred to the substrate 7 to be transferred three times in succession. This operation is defined as one cycle.

As shown in FIG. 3G, when the non-transfer surface 24 of the plate 20 passes through the transfer position 25 after the end of the transfer of the third rotation of the plate 20 (after the end of the last transfer of the first cycle), the transfer material. 6 and the transfer base material 7 are conveyed in opposite directions and stepped back, and the transfer material 6 and the transfer base material 7 are placed in the gap between the non-transfer surface 24 of the plate cylinder 20 and the peripheral surface of the impression cylinder 21. They are conveyed in the opposite directions through each of them and returned by a predetermined distance. The return distance of the transfer material 6 and the return distance of the transfer base material 7 are different. After that, the transfer material 6 and the transfer base material 7 are synchronously transported in the positive direction (see FIG. 3H).
The return distance of the transfer base material 7 by step back is the same as the above description, and as shown in FIG. 3H, when the transfer surface 22 moves to the transfer position 25 at the fourth rotation of the plate cylinder 20, the transfer base material 7 is transferred. Make sure that the blank area (D) of 7 matches the transfer position 25. The blank region (D) of the substrate 7 to be transferred is closest to the upstream side in the transport direction of the region (C) of the substrate 7 to be transferred on which the transfer material 6 is transferred on the transfer surface 22 at the third rotation of the plate cylinder 20. It is a blank area.
As shown in FIG. 3H, the return distance of the transfer material 6 by step back is transferred when the transfer surface 22 moves to the transfer position 25 at the fourth rotation of the plate cylinder 20 (at the time of the first transfer in the second cycle). Make sure that the region (4) of the material 6 coincides with the transfer position 25. The region (4) of the transfer material 6 is a region adjacent to the upstream side in the transport direction of the region (1) of the transfer material 6 used for the transfer of the transfer surface 22 in the first rotation of the plate cylinder 20. The region (4) of the transfer material 6 is transferred to the blank region (D) of the substrate 7 to be transferred by the transfer surface 22.

The transfer operation for one cycle is performed by the control unit 5 as follows.
The control unit 5 counts the number of rotations of the plate cylinder 20 and determines whether the counted number of rotations of the plate cylinder 20 matches the number of rotations of the plate cylinder 20 in one cycle.
If it is determined that the control unit 5 does not match, the transfer operation for one cycle has not been completed, so that the transfer material 6 is continuously conveyed in the positive direction and the transfer is continued.
If it is determined that the control unit 5 matches, the transfer operation for one cycle is completed, so that the transfer material 6 conveyed at the transfer speed in the positive direction is decelerated and stopped, and then the transfer material 6 is transferred. Step back. After the step back, the transfer material 6 is accelerated to the transfer rate and the transfer of the next cycle is started.

The step back of the transfer material 6 is performed as follows.
For example, the step back roller 33 on the supply side and the step back roller 40 on the recovery side are synchronously rotated in the reverse direction to convey the transfer material 6 in the opposite direction (direction of arrow b) by a predetermined distance.
In order to stabilize the transfer of the transfer material 6, the rotation speed of the step back roller on the downstream side is controlled to be faster than the rotation speed of the step back roller on the upstream side with respect to the direction during transfer. By this control, a state in which sufficient tension is always applied between the step roller 33 on the supply side and the step back roller 40 on the recovery side to transfer the transfer material 6 is maintained, and the transfer material 6 is stably transferred. can. A step back roller (not shown) that conveys the transfer substrate 7 is also controlled in the same manner.

At this time, the tension of the transfer material 6 between the step back roller 33 on the supply side and the feed roller 31 on the supply side and the tension of the transfer material 6 between the step back roller 40 on the recovery side and the feed roller 42 on the recovery side. However, the change in tension is absorbed by the shock absorber 32 on the supply side and the shock absorber 41 on the recovery side, respectively.
After the transfer material 6 is conveyed in the opposite direction and returned by a predetermined distance, the step back roller 33 on the supply side and the step back roller 40 on the recovery side are synchronously rotated in the forward direction to convey the transfer material 6 in the forward direction. do.
The step back of the transfer base material 7 includes a step back roller on the upstream side and a step back roller on the downstream side of the transfer base material transport portion (not shown), the step back roller 33 on the supply side and the step on the recovery side described above. It is controlled in the same manner as the back roller 40.

The transfer control of the transfer material 6 will be described with reference to FIGS. 4 and 5. FIG. 4 is a schematic diagram of transfer control of the transfer material from the first rotation (1st cycle) to the 6th rotation (second cycle) of the plate cylinder of the embodiment, and FIG. 5 is the plate cylinder 1 of the embodiment. It is a schematic diagram of the transfer control of the transfer material from the rotation (1st cycle) to the 24th rotation (8th cycle).
As shown in FIG. 4, the distance required for transfer of the transfer surface 22 is defined as L. L is the distance obtained by adding the minimum margin required for transfer to the top-bottom size (length in the rotation direction) of the transfer surface 22.
The distance between the transfer surfaces, that is, the outer peripheral length of the plate cylinder 20 (the distance from the position where the transfer surface starts transfer at the first rotation of the plate cylinder to the position where the transfer surface starts transfer at the next second rotation of the plate cylinder) is defined as M. Define.
The outer peripheral length of the plate cylinder 20 is the length of the peripheral surface of the virtual circle whose radius is the distance from the rotation center of the plate cylinder 20 to the transfer surface 22.

The number of rotations of the plate cylinder 20 in one cycle (the number of transfers in one cycle) is defined as S. In this explanation, the number of rotations S of the plate cylinder 20 in one cycle is 3.
The number of times transfer is possible within the distance between the transfer surfaces is defined as N. N can be derived by the distance M between the transfer surfaces and the distance L required for transfer of the transfer surface 22. That is, N = M ÷ L.
The distance L required for transfer of the transfer surface 22 is determined by the top-bottom size of the transfer surface 22 and the accuracy of transporting the transfer material 6. The distance M between the transfer surfaces (the outer peripheral length of the plate cylinder) M is determined by the size of the plate cylinder 20, and the number of times N that can be transferred within the distance between the transfer surfaces can be derived by L and M, so N is also a plate. It is determined by the size of the body 20 and the like.
In this embodiment, N is 6, and there are 5 frames between the regions used for the transfer of the transfer material 6 in one cycle, for example, between the regions (1) and the regions (2). That is, the number of times transferable within the distance between transfer surfaces includes the first transfer.
Further, in the transfer material 6 after the transfer in the first cycle of FIG. 4, a blank region between the region (1) and the region (2) and a blank region between the region (2) and the region (3). Is an unused area generated in the first cycle.
That is, the number of times that the unused region can be transcribed is N-1.
The embodiment is a case where N is an integer, but when M is not an integral multiple of L, a remainder occurs in N. The remainder of N means a range that does not reach the distance L required for transfer of the transfer surface 22 and remains unusable for transfer when transferred in an unused region, as shown in FIGS. 3 to 5. In the following description, N is treated as an integer with the remainder rounded down.

As shown in FIG. 4, in the first cycle, the region (1) of the transfer material 6 is used for transfer by the transfer surface 22 in the first rotation of the plate cylinder 20, and in the second rotation of the plate cylinder 20. The region (2) of the transfer material 6 is used for transfer by the transfer surface 22, and the region (3) of the transfer material 6 is used for transfer by the transfer surface 22 at the third rotation of the plate cylinder 20.
At the time of transition from the first cycle to the second cycle, that is, after the final transfer of the first cycle is completed, the speed of the transfer material 6 conveyed in the positive direction at the transfer speed is reduced and stopped. After that, the transfer material 6 steps back, and the step back is as follows.
The stopped transfer material 6 is accelerated in the reverse direction (return direction) to a predetermined transfer speed and transferred at a predetermined transfer speed. After that, in order to stop the step back, the speed is reduced from the predetermined transport speed, and the transport in the opposite direction is stopped at a predetermined distance. Transporting a predetermined distance including acceleration and deceleration in the opposite direction is step back. The distance from the stop to the predetermined transport speed is defined as the acceleration distance during step back, and the distance from the transport speed to the stop is defined as the deceleration distance during step back. The transport during the step back may be switched to deceleration immediately after accelerating to a predetermined transport speed without providing a distance for transport at a predetermined transport speed.

Then, by the time the transfer is started on the transfer surface 22 in the second cycle, the stopped transfer material 6 is accelerated and conveyed in the positive direction at the transfer rate.
The distance from the state in which the transfer material 6 is conveyed in the positive direction at the transfer rate to the deceleration and stop (deceleration distance after transfer) is defined as β. Further, the distance (acceleration distance before transfer) until the transfer material 6 stopped after stepping back is accelerated in the positive direction to reach the transfer speed is defined as α.
The deceleration distance β after transfer and the acceleration distance α before transfer are the characteristics of the drive motor that rotationally drives the step back roller 33 on the supply side and the step back roller 40 on the recovery side shown in FIG. 1, the transport speed, and the return by step back. It is a parameter determined by the distance and the length of the non-transfer surface 24 of the plate cylinder 20.
The deceleration distance β after transfer and the acceleration distance α before transfer are automatically determined using a known control device recommended by the characteristics of the drive motor.
Further, the acceleration distance during step back, the deceleration distance during step back, and the transfer speed during step back for transporting the transfer material 6 in the reverse direction (return direction) are also set for the deceleration distance β after transfer and the acceleration before transfer. It is determined in the same way as the distance α.

The distance for transporting the transfer material 6 in the reverse direction in one step back is defined as a return distance R1, and the return distance R1 will be described below.
As shown in FIG. 4, the region (4) of the transfer material 6 used for transfer by the transfer surface 22 in the first rotation of the plate cylinder 20 in the second cycle is the first rotation of the plate cylinder 20 in the first cycle. It is a region adjacent to the upstream side in the transport direction of the region (1) of the transfer material 6 used for transfer by the transfer surface 22.
The region (5) of the transfer material 6 used for transfer by the transfer surface 22 in the second rotation of the plate cylinder 20 in the second cycle is used for transfer by the transfer surface 22 in the second rotation of the plate cylinder 20 in the first cycle. It is a region adjacent to the upstream side in the transport direction of the region (2) of the transferred transfer material 6.
The region (6) of the transfer material 6 used for transfer by the transfer surface 22 at the third rotation of the plate cylinder 20 in the second cycle is used for transfer by the transfer surface 22 at the third rotation of the plate cylinder 20 in the first cycle. It is a region adjacent to the upstream side in the transport direction of the region (3) of the transferred transfer material 6.

Therefore, the return distance R1 can be derived from the following equation (1).
R1 = M × (S-1) + α + β ... Equation (1)
Since the number of rotations S of the plate cylinder 20 in one cycle is 3 and the distance M between the transfer surfaces is 6 times L as shown in FIG. 4, the return distance R1 from the equation (1) is 6L × 2 + α + β. Since α and β are each at a distance of 2 L, the return distance R1 is a distance of 16 L. Further, the transport distance R in the positive direction in one cycle is a distance of 17 L.
As shown in FIG. 4, when shifting from the first cycle to the second cycle, the transfer material 6 may be conveyed in the opposite direction by a distance of 16 L.

As shown in FIG. 5, the return distance R1 when shifting from the second cycle to the third cycle, the return distance R1 when shifting from the third cycle to the fourth cycle, and when shifting from the fourth cycle to the fifth cycle. The return distance R1 and the return distance R1 at the time of transition from the 5th cycle to the 6th cycle are each 16L. In FIG. 5, α and β are set to 0 (α = 0, β = 0), and the figure is simplified for easy understanding.
The region (7) of the transfer material 6 used for transfer by the transfer surface 22 in the first rotation of the plate cylinder 20 in the third cycle is used for transfer by the transfer surface 22 in the first rotation of the plate cylinder 20 in the second cycle. It is a region adjacent to the upstream side in the transport direction of the region (4).
The region (8) of the transfer material 6 used for transfer by the transfer surface 22 in the second rotation of the plate cylinder 20 in the third cycle is used for transfer by the transfer surface 22 in the second rotation of the plate cylinder 20 in the second cycle. It is a region adjacent to the upstream side in the transport direction of the region (5).
The region (9) of the transfer material 6 used for transfer by the transfer surface 22 at the third rotation of the plate cylinder 20 in the third cycle is used for transfer by the transfer surface 22 at the third rotation of the plate cylinder 20 in the second cycle. It is a region adjacent to the upstream side in the transport direction of the region (6).

The region (10) of the transfer material 6 used for transfer by the transfer surface 22 in the first rotation of the plate cylinder 20 in the fourth cycle is used for transfer by the transfer surface 22 in the first rotation of the plate cylinder 20 in the third cycle. It is a region adjacent to the upstream side in the transport direction of the region (7).
The region (11) of the transfer material 6 used for transfer by the transfer surface 22 in the second rotation of the plate cylinder 20 in the fourth cycle is used for transfer by the transfer surface 22 in the second rotation of the plate cylinder 20 in the third cycle. It is a region adjacent to the upstream side in the transport direction of the region (8).
The region (12) of the transfer material 6 used for transfer by the transfer surface 22 at the third rotation of the plate cylinder 20 in the fourth cycle is used for transfer by the transfer surface 22 at the third rotation of the plate cylinder 20 in the third cycle. It is a region adjacent to the upstream side in the transport direction of the region (9).

The region (13) of the transfer material 6 used for transfer by the transfer surface 22 in the first rotation of the plate cylinder 20 in the fifth cycle is used for transfer by the transfer surface 22 in the first rotation of the plate cylinder 20 in the fourth cycle. It is a region adjacent to the upstream side in the transport direction of the region (10).
The region (14) of the transfer material 6 used for transfer by the transfer surface 22 in the second rotation of the plate cylinder 20 in the fifth cycle is used for transfer by the transfer surface 22 in the second rotation of the plate cylinder 20 in the fourth cycle. It is a region adjacent to the upstream side in the transport direction of the region (11).
The region (15) of the transfer material 6 used for transfer by the transfer surface 22 at the third rotation of the plate cylinder 20 in the fifth cycle is used for transfer by the transfer surface 22 at the third rotation of the plate cylinder 20 in the fourth cycle. It is a region adjacent to the upstream side in the transport direction of the region (12).

The region (16) of the transfer material 6 used for transfer by the transfer surface 22 in the first rotation of the plate cylinder 20 in the sixth cycle is used for transfer by the transfer surface 22 in the first rotation of the plate cylinder 20 in the fifth cycle. It is a region adjacent to the upstream side in the transport direction of the region (13).
The region (17) of the transfer material 6 used for transfer by the transfer surface 22 in the second rotation of the plate cylinder 20 in the sixth cycle is used for transfer by the transfer surface 22 in the second rotation of the plate cylinder 20 in the fifth cycle. It is a region adjacent to the upstream side in the transport direction of the region (14).
The region (18) of the transfer material 6 used for transfer by the transfer surface 22 at the third rotation of the plate cylinder 20 in the sixth cycle is used for transfer by the transfer surface 22 at the third rotation of the plate cylinder 20 in the fifth cycle. It is a region adjacent to the upstream side in the transport direction of the region (15).

As shown in FIG. 5, from the 6th cycle (the same number of times N that can be transferred within the distance between the transfer surfaces) to the 7th cycle (the cycle N + 1 that can be transferred within the distance between the transfer surfaces). In the case of transition, if the return distance R1 is to be transferred as the distance derived from the equation (1), the region (19) to be used for transfer by the transfer surface 22 in the first rotation of the plate cylinder 20 in the 7th cycle. Is a region adjacent to the upstream side in the transport direction of the region (16) used for transfer by the transfer surface 22 in the first rotation of the plate cylinder 20 in the sixth cycle, and that region has already been used for transfer.
That is, when the transcription in the 6th cycle is completed, the region (within the used range) on the downstream side in the transport direction of the region (18) used for the transcription at the end of the 6th cycle is all used for the transcription. New areas are needed that can be used.

Therefore, when shifting from the 6th cycle to the 7th cycle, the return distance R1 is defined as the distance derived from the equation (2) after the transfer by the transfer surface 22 at the 3rd rotation of the plate cylinder 20 in the 6th cycle is completed. The region of the transfer material 6 used by the transfer surface 22 for transfer in the first rotation of the plate cylinder 20 in the 7th cycle, and the region used by the transfer surface 22 in the transfer in the third rotation of the plate cylinder 20 in the 6th cycle ( The area (19) adjacent to the upstream side in the transport direction of 18) is used. This area (19) is a new area.
R1 = α + β ... Equation (2)

This is done by the control unit 5. For example, the control unit 5 counts the number of cycles (hereinafter referred to as the number of cycles), and if the counted number of cycles does not match the number of times N that can be transferred within the distance between the transfer surfaces, the control unit 5 has been used. Assuming that there is a region that can be used for transfer within the range, the return distance R1 by step back of the transfer material 6 is defined as the distance (M × (S-1) + α + β) derived from the equation (1).
If the counted number of cycles matches the number of times N that can be transferred within the distance between the transfer surfaces, the control unit 5 assumes that there is no area that can be used for transfer within the used range, and returns the transfer material 6 by step back. Let the distance R1 be the distance (α + β) derived from the equation (2).
The region (20) of the transfer material 6 used by the transfer surface 22 for transfer in the second rotation of the plate cylinder 20 in the seventh cycle, and the transfer surface 22 used for transfer in the third rotation of the plate cylinder 20 in the seventh cycle. The region (21) of the transfer material 6 is a new region.

When shifting from the 7th cycle to the 8th cycle, the return distance R1 is taken as the distance derived from the equation (1).
The region (22) of the transfer material 6 used for transfer by the transfer surface 22 in the first rotation of the plate cylinder 20 in the eighth cycle is used for transfer by the transfer surface 22 in the first rotation of the plate cylinder 20 in the seventh cycle. It is a region adjacent to the upstream side in the transport direction of the region (19).
The region (23) of the transfer material 6 used for transfer by the transfer surface 22 in the second rotation of the plate cylinder 20 in the eighth cycle is used for transfer by the transfer surface 22 in the second rotation of the plate cylinder 20 in the seventh cycle. It is a region adjacent to the upstream side in the transport direction of the region (20).
The region (24) of the transfer material 6 used for transfer by the transfer surface 22 at the third rotation of the plate cylinder 20 in the eighth cycle is used for transfer by the transfer surface 22 at the third rotation of the plate cylinder 20 in the seventh cycle. It is a region adjacent to the upstream side in the transport direction of the region (21).

That is, until the number of cycles performed reaches the number N that can be transferred within the distance between the transfer surfaces, the return distance R1 by step back of the transfer material 6 when shifting the cycle is set to the above equation (1). The distance derived from. In the embodiment, the distance is 16L.
Transfer material 6 when shifting from the 6th cycle (the same number of cycles as the number of transfers N within the distance between the transfer surfaces) to the 7th cycle (the cycle of the number of transfers N + 1 within the distance between the transfer surfaces). Let the return distance R1 by the step back of the above be the distance derived from the equation (2). In the embodiment, the distance is 4L.
According to the transfer device 1 of the embodiment, all the unused regions of the transfer material 6 generated in the first cycle can be used for transfer in the sixth cycle.
Therefore, the transfer material 6 can be effectively used without wasting it.
In the above description, since the distance M between the transfer surfaces of the plate cylinder 20 is 6 L, the number of times N that can be transferred is 6 depending on the distance between the transfer surfaces, but when N changes depending on the values of M and L. The return distance R1 can be determined as follows.
When a natural number (positive integer) is defined as k and the transcription cycle is defined as P, the return distance R1 by step back in the P cycle is the above equation (3) when P satisfies the following equation (3). The distance is derived from 2), and if the equation (3) is not satisfied, the distance is derived from the above equation (1).
P = k × N ... Equation (3)
The case where P satisfies the equation (3) is a case where the transcription cycle is an integral multiple of N, and the case where P is not satisfied is a case where the transcription cycle is not an integral multiple of N.

A comparison of the number of step backs of the transfer material 6 by the transfer device 1 of the embodiment and the number of step backs of the transfer material 106 by the transfer device developed by the present inventors is as follows.
The transfer device 1 of the embodiment steps back the transfer material 6 every cycle in which the plate cylinder 20 is rotated a plurality of times, whereas the transfer device developed by the present inventors is 1 of the plate cylinder 100. Since the transfer material 106 is stepped back for each rotation, the number of steps back of the transfer materials 6 and 106 is smaller in the transfer device 1 of the embodiment.
Therefore, by reducing the number of step backs of the transfer material 6, the rotational inertia forces acting on the step back rollers 33 and 40 during deceleration after transfer, acceleration before transfer, acceleration during step back, and deceleration. The influence of the above is reduced, and the rotational inertia force of the step back rollers 33 and 40 makes the rotation speed control and the stop position control of the step back rollers 33 and 40 unstable, and the behavior of the transfer material 6 becomes unstable. It can be reduced and the transfer of the transfer material 6 can be stabilized. Further, the influence of the inertial force acting on the transfer material 6 during deceleration after transfer, acceleration before transfer, acceleration during step back, and deceleration is reduced, and the transfer of the transfer material 6 can be stabilized. By these things, the yield can be improved.

The transfer state of the transfer material 6 and the transfer state of the transfer base material 7 in the transfer device 1 of the embodiment, the transfer state of the transfer material 106 and the transfer state of the transfer base material 107 in the transfer device developed by the present inventors. Is shown in FIG. 6 in comparison with each other.
FIG. 6 is a table showing a comparison of the transfer states of the transfer material and the substrate to be transferred. The horizontal axis indicates the number of rotations of the plate cylinder, and the vertical axis indicates the transfer distance of the transfer material and the substrate to be transferred. The normalized value is shown by dividing by the distance L required for the transfer of 22. That is, one scale is L. The change in the negative direction with respect to the vertical axis represents the transportation in the opposite direction by step back.
The transport state of the transfer base material 7 in the transfer device 1 of the embodiment and the transfer base material 107 in the transfer device developed by the present inventors is shown by the same solid line X, and the transfer device 1 of the embodiment is shown. The transferred base material 7 in the above and the transferred base material 107 in the transfer device developed by the present inventor and the like are conveyed in the same manner, and step back is performed for each rotation of the plate cylinder to transfer the transferred base materials 7 and 107. It can be confirmed that the position of the area is controlled.

The transport state of the transfer material 6 in the transfer device 1 of the embodiment is indicated by a broken line Y, and step back is performed every three rotations (one cycle) of the plate cylinder 20 to control the region used for the transfer of the transfer material 6. You can confirm that you are doing it.
The transport state of the transfer material 106 in the transfer device developed by the present inventors is indicated by the alternate long and short dash line Z, and step back is performed for each rotation of the plate cylinder 100 to control the region used for transfer of the transfer material 106. It can be confirmed that it is.
As described above, since the vertical axis is the transport distance and the change in the negative direction is the step back, the return distance R1 of the transfer material 6 and the return distance R10 of the transfer material 106 are while changing negatively. Since it corresponds to the absolute value of the distance, the return distance R1 of the transfer material 6 in the transfer device 1 of the embodiment is a distance of 16 L, and the return distance R10 of the transfer material 106 in the transfer device developed by the present inventors is 4 L. It can be confirmed that the distance is reached.
Then, it can be confirmed that the transfer material 106 in the transfer device developed by the present inventors performs step back three times while the transfer material 6 in the transfer device 1 of the embodiment steps back once.

Further, the transfer distance r1 conveyed in the positive direction when the plate cylinder 20 of the transfer base material 7 in the transfer device 1 of the embodiment makes one rotation is 5 L, and the transfer group in the transfer device developed by the present inventors and the like. The transport distance r1 transported in the positive direction when the plate cylinder 100 of the material 107 makes one rotation is also 5 L, and the transport distance r1 transported in the positive direction of both is the same.
As described above, while the transfer material 6 in the transfer device 1 of the embodiment steps back once, the transfer material 106 in the transfer device developed by the present inventors performs step back three times. The transport distance R that is conveyed in the positive direction during the transfer operation of the transfer material 6 in the transfer device 1 of the embodiment is a distance of 17 L, which is positive when the transfer material 106 is transferred in the transfer device developed by the present inventors. Since the transport distance R transported in the direction is 5 L, the transport distance R transported in the positive direction of both is different.
Further, from the broken line Y in FIG. 6, it can be seen that the larger the number of rotations S of the plate cylinder 20 in one cycle, the smaller the number of step backs of the transfer material 6.
The number of rotations S of the plate cylinder 20 in one cycle can be arbitrarily set, but the maximum value thereof is the rotation drive of the distance M between the transfer surfaces (the outer peripheral length of the plate cylinder 20) and the step back rollers 33 and 40. It is a value determined by the characteristics of a drive motor (not shown) to be controlled.
In this embodiment, the maximum number of rotations S of the plate cylinder 20 in one cycle is used, and the number of step backs of the transfer material 6 is minimized.

The control method of the transfer device 1 of the embodiment will be described with reference to the flowchart shown in FIG.
Parameters required for transfer such as L, M, and S, and parameters used in a normal transfer device and a printing device such as a transfer speed are input to the control unit 5 of the transfer device. Step 1 (S1).
Select to start the transfer operation. Step 2 (S2).
The return distance R1 ((M × (S-1) + α + β), (α + β)) and the like are set according to the input parameters, and the transfer material 6 and the transfer base material 7 are started to be transferred. At this time, the variable i for counting the number of transfer cycles is set to 0, and the variable j for counting the number of rotations (number of transfers) of the plate cylinder 20 is set to 0 (i = 0, j = 0). Step 3 (S3).
The transfer material 6 and the substrate 7 to be transferred are simultaneously conveyed at a constant transfer rate, and transfer for one rotation of the plate cylinder 20 is performed. At this time, 1 is added to the variable j that counts the number of rotations of the plate cylinder 20 (j = j + 1). Step 4 (S4).

The transfer base material 7 is stepped back every one rotation of the plate cylinder 20. Step 5 (S5).
It is determined that the variable j for counting the number of rotations of the plate cylinder 20 is (j = S), that is, whether the transcription for one cycle is completed, and the processes of steps 4 and 5 are repeated until the condition is satisfied. Step 6 (S6).
When the condition of j = S is satisfied and the transcription for one cycle is completed, the variable j is returned to 0 (j = 0). That is, the count of the number of rotations of the plate cylinder 20 is reset. At the same time, 1 is added to the variable i that counts the number of transcription cycles (i = i + 1). Step 7 (S7).
After the transfer for one cycle, the presence or absence of an unused region not used for the transfer is confirmed from the condition of i = N, and the step back setting (return distance R1) of the transfer material 6 is determined. Step 8 (S8).

If the condition of i = N is not satisfied, an unused region exists in the used range. Therefore, the return distance R1 is defined as the distance derived from the equation (1) (M × (S-1) + α + β) as the transfer material. Step back to 6. Step 9 (S9).
When the condition of i = N is satisfied, since all the unused regions within the used range are used for transfer, the transfer material 6 is used with the return distance R1 as the distance (α + β) derived from the equation (2). Step back. Step 10 (S10).
At the same time, the variable i is returned to 0 (i = 0). That is, the count of the number of transcription cycles is reset. Step 11 (S11).
By repeating the processes from step 4 (S4) to step 11 (S11), the unused region generated in the transfer material 6 is used for transfer by intermittent transfer (transport including step back).

It should be noted that the control of the end of the transfer is the same as that of the normal transfer device and the printing device, and is a known control that ends according to the condition specified for the control unit 5 in step 1 or the stop operation by the operator of the transfer device. It is omitted.
As is clear from the above description, the transfer device 1 of the embodiment can reduce the number of step backs of the transfer material 6 with respect to the transfer device developed by the present inventors.
In the embodiment, it has been described that the distance L required for transfer of the transfer surface 22, the number of rotations S of the plate cylinder 20 in one cycle, and the like are input to the control unit 5, but in addition to these, 1 of the plate cylinder 20 The length C of the transferred substrate 7 that has been transferred produced by rotation is input to the control unit 5.
The length C of the transferred base material 7 produced by one rotation of the plate cylinder 20 is determined by the design of the product to be produced. The possible value of the length C is a value in the range of 127.0 mm to 355.6 mm, and the upper limit and the lower limit thereof are determined by the length of the embossed plate 23 of the plate cylinder 20.

The distance L required for transfer of the transfer surface 22 is input according to the pattern to be transferred. The distance L can be set to a value in the range of 5 mm to 355.6 mm (maximum value of C).
Since the length C is the length of the transferred substrate 7 that has been transferred produced by one rotation of the plate cylinder 20, the length C is a length of a distance L or more required for transfer of the transfer surface 22. ..
Therefore, since L needs to satisfy C ≧ L, the maximum value that can be set for L is the maximum value of C.
Further, the distance M between the transfer surfaces is the outer peripheral length of the plate cylinder 20. Since the plate cylinder 20 is not replaced in the embodiment, M becomes a specific value depending on the configuration of the transfer device 1.
As described above, in the present invention, the maximum value of the number of rotations S of the plate cylinder 20 in one cycle is controlled by rotationally driving the distance M between the transfer surfaces (the outer peripheral length of the plate cylinder 20) and the step back rollers 33 and 40. It depends on the characteristics of the drive motor. In the embodiment, the value of S can be set up to 20.
In the embodiment, when the values of L, S, and C input to the control unit 5 are outside the range of the above settings, and when L> C, the transferable condition is not satisfied. If the transferable condition is not satisfied, the control unit 5 determines that an error is made and does not perform the transfer operation. At the same time, an error is displayed by means (not shown).
The upper and lower limits of the values of L, S, and C shown here are examples. The upper limit and the lower limit of the values of L, S, and C are determined by the configuration of the transfer device 1 such as the outer peripheral length of the plate cylinder 20.
Further, the length C of the transferred base material 7 produced by one rotation of the plate cylinder 20 determines the return distance of the transferred base material 7 by step back.

1 ... Transfer device, 2 ... Transfer unit, 3 ... Transfer material supply unit, 4 ... Transfer material recovery unit, 5 ... Control unit, 6 ... Transfer material, 7 ... Transfer base material, 20 ... Plate cylinder, 21 ... Impressor, 22 ... Transfer surface, 24 ... Non-transfer surface, 25 ... Transfer position, 30 ... Unwinding shaft, 31 ... Supply side feed roller, 32 ... Supply side shock absorber, 33 ... Supply side step back roller, 40 ... Recovery side step back roller, 41 ... Recovery side shock absorber, 42 ... Recovery side feed roller, 43 ... Winding shaft.

Claims (8)

A transfer unit, a transfer material transfer unit that transports the transfer material to the transfer unit, a transfer base material transport unit that transports the transfer base material to the transfer unit, and a control unit are provided.
The transfer unit has an impression cylinder and a plate cylinder, and the plate cylinder has a transfer surface in contact with the peripheral surface of the impression cylinder and a non-transfer surface not in contact with the peripheral surface of the impression cylinder.
The transfer material transport unit has a step back roller, and by rotating the step back roller in the forward direction, the transfer material is conveyed in the forward direction, and by rotating the step back roller in the reverse direction, the transfer material is conveyed. In the opposite direction,
The transfer base material transport unit has a step back roller, and by rotating the step back roller in the forward direction, the transfer base material is conveyed in the forward direction, and the step back roller is rotated in the reverse direction. , The transfer base material is conveyed in the opposite direction,
By rotating the step back roller of the transfer material transfer unit and the step back roller of the transfer base material transport unit in the forward direction and transporting the transfer material and the transfer base material in the positive direction, the transfer surface of the plate cylinder is transferred. And the peripheral surface of the impression cylinder, the transfer material is transferred to the transfer base material, and the transfer material is transferred to the substrate to be transferred.
By rotating the step back roller of the transfer material transfer unit and the step back roller of the transfer base material transfer unit in the reverse direction, the transfer material and the transfer base material can be transferred to the non-transfer surface of the plate cylinder and the impression cylinder. In a transfer device that transports in the opposite direction through a gap between the peripheral surface and steps back.
The plate cylinder of the transfer unit has only one transfer surface, and one rotation of the plate cylinder makes one transfer.
The control unit continuously performs a one-cycle transfer operation in which the transfer material is continuously conveyed in the positive direction and the plate cylinder is rotated arbitrarily a plurality of times to perform the transfer a plurality of times. When the transfer of one cycle is completed and the transfer of the next cycle is performed, the region of the transfer material used for the first transfer of the next cycle is used for the first transfer in the previous cycle. A transfer device characterized by controlling a step-back for transporting the transfer material in the opposite direction so that the region is adjacent to the upstream side in the transport direction of the region. In the transfer apparatus according to claim 1,
When the transfer of one cycle is completed and the transfer of the next cycle is performed, the control unit has a region that can be used for the transfer within the used range of the transfer material used for the transfer by the previous cycle. Whether or not it is determined, and if so, the region of the transfer material used for the first transfer in the next cycle is adjacent to the upstream side of the transport direction of the region used for the first transfer in the previous cycle. The step back for transporting the transfer material in the reverse direction is controlled so as to be a region, and if not, the region of the transfer material used for the first transfer in the next cycle is the last transfer in the previous cycle. A transfer device that controls a step-back for transporting the transfer material in the reverse direction so as to be a region adjacent to the upstream side in the transport direction of the region used for the transfer material. In the transfer apparatus according to claim 2,
The control unit determines that there is no region that can be used for the transfer when the number of repeated cycles matches the number of transferable times within the distance between the transfer surfaces corresponding to the outer peripheral length of the plate cylinder. , A transfer device that determines that there is a region that can be used for the transfer when they do not match. In the transfer apparatus according to claim 1,
The control unit is a transfer device that controls a step back for transporting the transfer base material in the reverse direction for each rotation of the plate cylinder. It consists of a plate cylinder and an impression cylinder having only one transfer surface, and a transfer unit that transfers the transfer material to the substrate to be transferred.
A step back roller that conveys the transfer material in the forward and reverse directions by forward and reverse rotation,
In a transfer method of a transfer device provided with a step back roller that transports a substrate to be transferred in the forward and reverse directions by forward rotation and reverse rotation.
In a state where the transfer material is continuously conveyed in the positive direction, rotating the plate cylinder a plurality of times to perform the transfer a plurality of times is defined as one cycle, and the one cycle is continuously repeated a plurality of times. As a transfer method to transfer
Every time the transfer operation by one rotation of the plate cylinder is completed, it is determined whether the rotation speed of the plate cylinder matches the rotation speed of the plate cylinder in one cycle, and if not, the transfer material is continuously transferred. Then, the transfer material is conveyed in the forward direction, and the transfer of the cycle is continued. To perform the transcription of the next cycle,
The region of the transfer material used for the first transfer in the next cycle is adjacent to the region upstream of the transport direction of the region used for the first transfer in the previous cycle, with the distance to transport the transfer material in the reverse direction. A transfer method of a transfer device, characterized in that the distance is set to be. In the transfer method of the transfer device according to claim 5,
When the transfer of one cycle is completed and the transfer of the next cycle is performed, it is determined whether or not there is a region that can be used for the transfer within the used range of the transfer material used for the transfer by the previous cycle. Judgment,
If it is determined that there is, the step back roller is rotated in the reverse direction to transport the transfer material in the reverse direction and step back, and the distance conveyed in the reverse direction is used for the first transfer in the next cycle. The distance is set so that the region of the transfer material becomes a region adjacent to the upstream side in the transport direction of the region used for the first transfer in the previous cycle.
If it is determined that there is no step back roller, the step back roller is rotated in the reverse direction to transport the transfer material in the reverse direction and step back, and the distance conveyed in the reverse direction is used for the first transfer in the next cycle. A transfer method of a transfer device in which the region of the transfer material is set to a distance adjacent to the region upstream in the transport direction of the region used for the last transfer in the previous cycle. In the transfer method of the transfer device according to claim 6,
When the number of repeated cycles matches the number of transferable times within the distance between the transfer surfaces corresponding to the outer peripheral length of the plate cylinder, it is determined that there is no region available for the transfer, and the cases do not match. , A transfer method of a transfer device for determining that there is a region that can be used for the transfer. In the transfer method of the transfer device according to claim 5,
A transfer method of a transfer device in which the step back roller is rotated in the reverse direction for each rotation of the plate cylinder to convey the substrate to be transferred in the reverse direction and step back.

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