JP7055408B2 - 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 wound foil in a state of not being used for embossing can be reduced to some extent.
However, the transfer device disclosed in Patent Document 1 is a case where there is one embossing gold plate, and the transfer device when there are a plurality of embossing gold plates is not disclosed.
Therefore, the present inventors have developed a transfer device capable of significantly reducing waste of the transfer material by controlling the transfer of the transfer material when there are a plurality of transfer surfaces.

The transfer apparatus developed by the present inventors will be described with reference to FIGS. 10 to 14.
FIG. 10 is a schematic view of a transfer unit of a 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 first transfer surface 103, a second transfer surface 104, and a third transfer surface 105 at intervals in the rotation direction, and the first, second, and third transfer surfaces 103, 104, 105 is provided in the embossed version 106. The surfaces of the plate cylinder 100 other than the first, second, and third transfer surfaces 103, 104, and 105 are non-transfer surfaces 107.
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 108 and the substrate 109 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 material 108 and the transfer base material 109 are conveyed in the positive direction and pass between the plate cylinder 100 and the impression cylinder 101 in a superposed state, and the transfer material 108 is transferred to the transfer base material by the first transfer surface 103. After being transferred to the 109, the transfer material 108 is transferred to the transfer base material 109 by the second transfer surface 104, and then the transfer material 108 is transferred to the transfer base material 109 by the third transfer surface 105.

The transfer of the transfer material 108 and the transfer base material 109 to the plate cylinder 100 and the transfer operation by the first, second, and third transfer surfaces 103, 104, and 105 will be described with reference to FIG.
In FIG. 11, the transfer material 108 and the transfer base material 109 are provided with frames corresponding to the distances required for transfer of one transfer surface, respectively, to facilitate the understanding of transport and transfer operations. In the actual transfer device, the transfer material 108 and the transfer base material 109 are not provided with a frame. The frame of the shaded area of the substrate 109 to be transferred is a non-transferred area (a region used for other than transfer such as printing), and the blank area frame (hereinafter referred to as a blank area) is a transfer area.
The broken line is the transfer position 110 where the transfer material 108 and the transfer base material 109 are nipped on one transfer surface of the plate cylinder 100 and the peripheral surface of the impression cylinder 101.
The distance between the first transfer surface 103 and the second transfer surface 104 of the plate cylinder 100 and the distance between the second transfer surface 104 and the third transfer surface 105 do not transfer the transfer base material 109. It is determined by the distance of the region (diagonal region in FIG. 11).

FIG. 11A shows a state before the start of transfer, and the first, second, and third transfer surfaces 103, 104, and 105 are displaced from the transfer position 110.
From this state, the plate cylinder 100 rotates, and the transfer material 108 and the transfer base material 109 are synchronously conveyed in the positive direction (arrow a direction) at the same transfer rate.
As shown in FIG. 11B, when the first transfer surface 103 moves to the transfer position 110, the first transfer surface 103 transfers the transfer material 108 to the transfer base material 109. The region used for the transfer of the transfer material 108 is referred to as (1), and the region to which the transfer material 108 of the transfer base material 109 is transferred is referred to as (A).
As shown in FIG. 11C, when the second transfer surface 104 moves to the transfer position 110, the second transfer surface 104 transfers the transfer material 108 to the transfer base material 109. The region used for the transfer of the transfer material 108 is referred to as (2), and the region to which the transfer material 108 of the transfer base material 109 is transferred is referred to as (B).

As shown in FIG. 11D, when the third transfer surface 105 moves to the transfer position 110, the third transfer surface 105 transfers the transfer material 108 to the transfer substrate 109. The region used for the transfer of the transfer material 108 is referred to as (3), and the region to which the transfer material 108 of the transfer base material 109 is transferred is referred to as (C).
The transfer material 108 and the substrate 109 to be transferred are simultaneously conveyed at the same transfer rate, and the regions (1) to regions (3) used for the transfer of the transfer material 108 in FIGS. 11B to 11D are described as regions (1) to regions (3). The blank area between 1) and the area (2) and the blank area between the area (2) and the area (3) are unused areas that are not used for transcription. The distance of this unused region is the same as the distance of the shaded region of the transferred substrate 109.
If the transfer material 108 is collected and discarded by a collection unit (not shown) while the unused area is left in the transfer material 108, the unused area is wasted. In particular, when gold leaf or silver leaf is used as the transfer material 108, the cost is high if there are many unused areas because the gold leaf or silver leaf is expensive.

Therefore, as shown in FIG. 11E, when the non-transfer surface region 111 between the third transfer surface 105 and the first transfer surface 103 in the plate cylinder 100 passes through the transfer position 110, the transfer material 108 is moved in the opposite direction. The transfer material 108 is transferred in the opposite direction (arrow b direction) by a predetermined distance through the gap between the non-transfer surface 107 of the plate cylinder 100 and the peripheral surface of the impression cylinder 101. This operation is step back. It should be noted that the step back includes control of acceleration and deceleration during transportation in the reverse direction. The details of step back will be described later. After that, by transporting the transfer material 108 in the forward direction, as shown in FIG. 11F, when the first transfer surface 103 moves to the transfer position 110 in the second rotation of the plate cylinder 100, the region of the transfer material 108 ( 4) coincides with the transfer position 110, and the region (4) is used for transfer of the first transfer surface 103. The region (4) is a region adjacent to the region (1) of the transfer material 108 used for transfer by the first transfer surface 103 on the upstream side in the transport direction in the first rotation of the plate cylinder 100.

In the state shown in FIG. 11E, the substrate 109 to be transferred is conveyed in the opposite direction to perform step back, and is returned by a predetermined distance. The return distance of the transfer base material 109 is different from the return distance of the transfer material 108. After that, by transporting the transfer base material 109 in the positive direction in synchronization with the transfer material 108, as shown in FIG. 11F, the first transfer surface 103 is moved to the transfer position 110 in the second rotation of the plate cylinder 100. When moved, the blank region (D) of the substrate 109 to be transferred coincides with the transfer position 110, and the transfer material 108 is transferred to the blank region (D). The blank region (D) is the blank region closest to the upstream side in the transport direction of the region (C) of the substrate 109 to be transferred on which the transfer material 108 is transferred on the third transfer surface 105 in the first rotation of the plate cylinder 100. be.
As shown in FIG. 11G, when the second transfer surface 104 moves to the transfer position 110 in the second rotation of the plate cylinder 100, the region (5) of the transfer material 108 coincides with the transfer position 110, and the region (5) ) Is used for the transfer of the second transfer surface 104. The region (5) is a region adjacent to the region (2) of the transfer material 108 used for transfer by the second transfer surface 104 on the upstream side in the transport direction in the first rotation of the plate cylinder 100.

In the substrate 109 to be transferred, the blank region (E) coincides with the transfer position 110, and the transfer material 108 is transferred to the blank region (E). The blank region (E) is a blank region closest to the upstream side in the transport direction of the region (D) of the substrate 109 to be transferred on which the transfer material 108 is transferred on the first transfer surface 103 in the second rotation of the plate cylinder 100. be.
As shown in FIG. 11H, when the third transfer surface 105 moves to the transfer position 110 in the second rotation of the plate cylinder 100, the region (6) of the transfer material 108 coincides with the transfer position 110, and the region (6) ) Is used for the transfer of the third transfer surface 105. The region (6) is a region adjacent to the region (3) of the transfer material 108 used for transfer by the third transfer surface 105 on the upstream side in the transport direction in the first rotation of the plate cylinder 100.
In the substrate 109 to be transferred, the blank region (F) coincides with the transfer position 110, and the transfer material 108 is transferred to the blank region (F). The blank region (F) is the blank region closest to the upstream side in the transport direction of the region (E) of the substrate 109 to be transferred on which the transfer material 108 is transferred on the second transfer surface 104 in the second rotation of the plate cylinder 100. be.
In the transfer from the first transfer surface 103 to the third transfer surface 105 of FIGS. 11F to 11H, the transfer material 108 and the transfer base material 109 are synchronized and the same as in the case of FIGS. 11B to 11D. It is conveyed at the transfer rate.

By performing this operation two more times, an unused region between the region (1) and the region (2) of the transfer material 108 used for transfer in the first rotation of the plate cylinder 100, and the region (2). The unused region between and region (3) can be used for transcription.
That is, the transfer material 108 and the substrate 109 to be transferred are decelerated after transfer, step back, and accelerated before transfer after transfer on the third transfer surface 105 (last transfer surface) for each rotation of the plate cylinder 100. The transfer material 108 adjusts the position of the region used for transfer so that the unused region can be used for transfer, and the transfer base material 109 adjusts the position of the region used for transfer so that the transfer material 108 can be transferred at the next position after transfer. The unused region of the transfer material 108 can be eliminated by adjusting the position of the region to which the transfer material 108 is transferred four times.

The transfer control of the transfer material 108 will be described with reference to FIGS. 12 and 13. FIG. 12 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. 13 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. 12, the distance required for transfer of one transfer surface 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. The distance between the transfer surfaces (distance from the transfer start position of one transfer surface to the transfer start position of the next transfer surface) is M, and the number of transfer surfaces of the plate cylinder 100 (number of transfers per rotation of the plate cylinder) is S. Define. In this description, the number S of transfer surfaces is 3.
The number of times the transfer material 108 can be transferred between the transfer surfaces (that is, the number of transfers between the transfer surfaces) can be derived by the distance M between the transfer surfaces and the distance L required for transfer of one transfer surface. If the number of transferable times is defined as N, then N = M ÷ L. This N is transferred by the first transfer surface 103 of the first rotation (in the region (1)), taking the transfer of the first transfer surface 103 and the second transfer surface 104 of the first rotation as an example. The number of times including transcription).
Therefore, the number of transferable times within the unused region of the transfer material 108 generated in the first rotation of the plate cylinder 100 (for example, between the region (1) and the region (2) in FIG. 13) is N-1. Become.

As shown in FIG. 12, since M = 4L, by substituting M = 4L for N = M ÷ L, N = 4.
From this, the unused region of the transfer material 108 generated in the first rotation is performed by rotating the plate cylinder 100 once to transfer the first rotation and then rotating the plate cylinder 100 three times to transfer three rotations. It turns out that all can be used for transcription. That is, by rotating the plate cylinder 100 four times and transferring four rotations, the entire area between the transfer surfaces of the transfer material 108 can be used for transfer.

As shown in FIG. 12, in the first rotation of the plate cylinder 100, the region (1) of the transfer material 108 is used for transfer by the first transfer surface 103, and the region of the transfer material 108 is used by the second transfer surface 104. (2) is used for transfer, and the region (3) of the transfer material 108 is used for transfer by the third transfer surface 105.
When the plate cylinder 100 shifts from the first rotation to the second rotation, that is, after the transfer by the third transfer surface 105, which is the last transfer surface of the first rotation, is completed, the plate cylinder 100 is conveyed in the positive direction at the transfer speed. The speed of the transfer material 108 is reduced and stopped. After that, the transfer material 108 steps back, and the step back is as follows.
The stopped transfer material 108 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 to reach a predetermined transport speed is defined as the acceleration distance during step back, and the distance from the predetermined transport speed to 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, the stopped transfer material 108 is accelerated and conveyed in the positive direction at the transfer speed by the time the transfer is started on the first transfer surface 103, which is the first transfer surface, at the second rotation of the plate cylinder 100.
The distance from the state in which the transfer material 108 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 108 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 region 111 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 deceleration distance during step back, the acceleration distance during step back, and the transfer speed during step back for transporting the transfer material 108 in the reverse direction (return direction) can also be set as 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 108 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. 12, the region (4) of the transfer material 108 used for transfer by the first transfer surface 103 in the second rotation of the plate cylinder 100 is the first transfer surface in the first rotation of the plate cylinder 100. 103 is a region adjacent to the upstream side in the transport direction of the region (1) of the transfer material 108 used for transfer. The regions (5) and (6) of the transfer material 108 used by the second and third transfer surfaces 104 and 105 in the second rotation of the plate cylinder 100 are the second and third regions in the first rotation of the plate cylinder 100. The transfer surfaces 104 and 105 of the above are regions adjacent to the regions (2) and (3) of the transfer material 108 used for transfer on the upstream side in the transport direction.

Therefore, the return distance R10 can be derived from the following equation (10).
R10 = M × (S-1) + α + β ... Equation (10)
Since the number S of the transfer surfaces of the plate cylinder 100 is 3 and the distance M between the transfer surfaces is 4 times L as shown in FIG. 12, the return distance R10 from the equation (10) is 4L × 2 + α + β. , 8L + α + β. In FIG. 12, since α = 2L and β = 2L, the return distance R10 is a distance of 12L. Further, the transport distance R in the positive direction in one rotation of the plate cylinder is a distance of 13 L.
As shown in FIG. 13, the transfer material is transferred when the plate cylinder 100 shifts from the first rotation to the second rotation, from the second rotation to the third rotation, and from the third rotation to the fourth rotation. It is sufficient to transport 108 in the opposite direction by a distance of 12 L. In FIG. 13, the distance between α and β is set to 0 (α = 0, β = 0), and the figure is simplified for easy understanding.

As shown in FIG. 13, in the third rotation of the plate cylinder 100, the first transfer surface 103 is the region (7) of the transfer material 108 used for transfer, and the second transfer surface 104 is the transfer material 108 used for transfer. The region (8) and the region (9) of the transfer material 108 used by the third transfer surface 105 for transfer are the first transfer surface 103, the second transfer surface 104, and the third transfer surface 105 in the second rotation. Is a region adjacent to the region (4), (5), (6) of the transfer material 108 used for transfer on the upstream side in the transport direction.
At the fourth rotation of the plate cylinder 100, the first transfer surface 103 is the region of the transfer material 108 used for transfer (10), the second transfer surface 104 is the region of the transfer material 108 used for transfer (11), and the third. The region (12) of the transfer material 108 used by the transfer surface 105 for transfer is the transfer material used by the first transfer surface 103, the second transfer surface 104, and the third transfer surface 105 at the third rotation. Areas (7), (8), and (9) of 108 are adjacent to the upstream side in the transport direction.

As described above, the unused area of the transfer material 108 generated in the first rotation of the plate cylinder 100 is completely used in the fourth rotation, so that it is newly used in the fifth rotation. Since a region that can be formed is required, the transfer of the plate cylinder 100 at the fifth rotation is performed in the same manner as the transfer at the first rotation.
For example, the region (13) of the transfer material 108 used for transfer by the first transfer surface 103, which is the first transfer surface, at the fifth rotation of the plate cylinder 100 is the last transfer surface at the fourth rotation. The third transfer surface 105 is a region adjacent to the upstream side in the transport direction of the region (12) of the transfer material 108 used for transfer. The return distance R10 due to the step back at this time is a value determined by α and β, unlike the above equation (10), and can be derived from the equation (11).
R10 = α + β ... Equation (11)

The transfer of the fifth rotation of the plate cylinder 100 is sequentially transferred by the first, second, and third transfer surfaces 103, 104, and 105 in the same manner as the transfer of the first rotation. The region used for the transfer of the transfer material 108 at that time is a new region on the upstream side in the transport direction from the region used for the transfer of the first rotation. The region used for the transfer of the first transfer surface 103 is (13), the region used for the transfer of the second transfer surface 104 (14), and the region used for the transfer of the third transfer surface 105. (15).
The transfer of the sixth rotation of the plate cylinder 100 is performed in the same manner as the transfer of the second rotation, and the regions (16), (17) used for the transfer on the first, second, and third transfer surfaces 103, 104, and 105. ), (18) convey the regions (13), (14), (15) of the transfer material 108 used for transfer by the first, second, and third transfer surfaces 103, 104, and 105 at the fifth rotation. It is an area adjacent to the upstream side in the direction.
Therefore, the return distance R10 by step back after the fifth rotation transfer of the plate cylinder 100 is completed is the distance derived from the above equation (10).

Although not shown, the transfer of the 7th rotation of the plate cylinder 100 is performed in the same manner as the transfer of the 3rd rotation, so that the return distance R10 by the step back after the final transfer of the 6th rotation is completed is the above equation. It is a distance derived from (10).
Although not shown, the transfer of the 8th rotation of the plate cylinder 100 is performed in the same manner as the transfer of the 4th rotation, so that the return distance R10 by the step back after the final transfer of the 7th rotation is completed is the above equation. It is a distance derived from (10).
Although not shown, the transfer of the 9th rotation of the plate cylinder 100 is performed in the same manner as the transfer of the 5th rotation, so that the return distance R10 by the step back after the final transfer of the 8th rotation is completed is the above equation. It is a distance derived from (11).
That is, when the number of rotations of the plate cylinder 100 is a multiple of 4, the unused region of the transfer material 108 is completely used by the completion of the final transfer. Therefore, the step after the final transfer is completed. The return distance R10 by the back is a distance derived from the above equation (11), and when the number of rotations of the plate cylinder 100 is not a multiple of 4, there is an unused region in the transfer material 108 even after the final transfer is completed. Since it is in a state, the return distance R10 by step back after the last transfer is completed is the distance derived from the above equation (10).

In the above description, since the distance M between the transfer surfaces of the plate cylinder 100 is 4 L, N is 4, but if M is not an integral multiple of L, a remainder is generated in N. The remainder of N means a range that does not reach the distance L required for transfer of one transfer surface and remains unusable for transfer when transferred in an unused region as shown in FIGS. 11 to 13. In the following description, N is treated as an integer value with the remainder rounded down. When N changes depending on the values of M and L, the return distance R10 can be determined as follows.
When the natural number (positive integer) is defined as k and the number of rotations of the plate cylinder 100 is defined as P, the return distance R10 by the step back of the P rotation is the first when P satisfies the following equation (12). The distance is derived from the above equation (11), and if the equation (12) is not satisfied, the distance is derived from the above equation (10).
P = k × N ... Equation (12)
The case where P satisfies the equation (12) is the case where the rotation speed of the plate cylinder is an integral multiple of N, and the case where P is not satisfied is the case where the rotation speed of the plate cylinder is not an integral multiple of N.

The control method of the transfer apparatus developed by the present inventors will be described with reference to the flowchart shown in FIG.
In the control unit of the transfer device, 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. Step 1 (S1).
Select to start the transfer operation. Step 2 (S2).
The distance derived from the equation (10), the distance derived from the equation (11), and the like are set according to the input parameters, and the transfer material 108 and the transfer base material 109 are started to be transferred. At this time, the variable i for counting the number of rotations of the plate cylinder 100 is set to 0 (i = 0). Step 3 (S3).
The transfer material 108 and the substrate 109 to be transferred are simultaneously conveyed at a constant transfer rate, and transfer for one rotation of the plate cylinder is performed. At this time, 1 is added to the variable i (i = i + 1). Step 4 (S4).

The transfer base material 109 is stepped back for each rotation of the plate cylinder. Step 5 (S5).
After the transfer for one rotation of the plate cylinder, the presence or absence of an unused region of the transfer material 108 is confirmed from the condition of i = N, and the step back setting of the transfer material 108 is determined. As described above, N is determined by the value rounded down to the nearest whole number. Step 6 (S6).
If the conditions are not satisfied, an unused region exists within the transferred range of the transfer material 108, so a step back of the distance (M × (S-1) + α + β) derived from the equation (10) is performed. Step 7 (S7).
When the condition is satisfied, since all the unused regions of the transfer material 108 are used, the step back of the distance (α + β) derived from the equation (11) is performed. Step 8 (S8).
When the process of step 8 (S8) is executed, the variable i is returned to 0 (i = 0). Step 9 (S9).

When the process of step 7 (S7) or step 9 (S9) is executed, the process returns to step 4 (S4) and the process of step 4 (S4) is executed.
By repeating the processes of steps 4 (S4) to 9 (S9), transfer using the unused region generated in the transfer material 108 for transfer is performed by the transfer including the step back.
It should be noted that the control of the end of transfer is omitted in the flowchart because it is a known control that ends according to the condition specified for the control unit in step 1 or the stop operation by the operator of the transfer device, as in a normal transfer device or printing device. are doing.
According to the transfer device developed by the present inventors, the unused region of the transfer material 108 generated by the transfer of the plate cylinder 100 in the first rotation can be used for the transfer in the second and subsequent rotations, and the transfer material can be used. The amount of the region to be conveyed without being used for the transfer of the 108 is significantly reduced, and the transfer material 108 can be effectively used without wasting it.

When transferring with the transfer device developed by the present inventors, the following problems may occur.
When the transfer material 108 is stepped back and the transport 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 the longer the return distance of the transfer material 108 by the step back, the longer. , It is necessary to increase the transfer speed of the transfer material 108 in the reverse direction.
Of the non-transfer surface 107 of the plate cylinder 100, the range of the non-transfer surface region 111 without the transfer surface between the third transfer surface 105 and the first transfer surface 103 is the deceleration and step after transfer of the transfer material 108. It is a range that can be used for backing and acceleration before transfer, and is used for deceleration after one transfer of transfer material 108, step back, and acceleration before transfer due to the range of this non-transfer surface region 111 and the rotation speed of the plate cylinder 100. The time you can do is decided.
In the case of the same plate cylinder 100, the longer the return distance of the transfer material 108, the longer the range of the transfer surface 103 to 105, and the relatively shorter the range of the non-transfer surface region 111, so that the transfer material 108 is transferred. The time available for post-deceleration, step-back, and pre-transfer acceleration is reduced.
That is, when the return distance is long, the transfer of the transfer material 108 in the reverse direction shortens the time that can be used for deceleration after transfer, step back, and acceleration before transfer, and increases the return distance itself. However, it is necessary to increase the transport speed.
If the transfer speed of the transfer material 108 becomes high, the speed change at the time of switching the rotation direction also becomes abrupt, so that the rotational inertia force of the step back roller (not shown) becomes large. When the rotational inertia force of the step back roller (not shown) is large, the rotational speed control and stop position control of the step back roller (not shown) become unstable due to the rotational inertia force of the step back roller (not shown) when the transfer direction of the transfer material 108 is switched. As a result, the behavior of the transfer material 108 may become unstable.
Further, when the transfer direction of the transfer material 108 is switched, an inertial force acts on the transfer material 108 in the transfer direction before the switching. Similar to the rotational inertial force of the step back roller (not shown), this inertial force also increases as the return distance R10 becomes longer. If the inertial force is large and the transfer material 108 has poor followability to changes in the forward and reverse rotation of the step back roller (not shown) that carries out the transfer, the transfer material 108 may be distorted or torn, and the transfer material 108 may be distorted or torn. The transfer of the material 108 was sometimes unstable.

Since the behavior of the transfer material 108 is unstable and the transfer is not stable, transfer errors occur and the yield is deteriorated. This occurs more often as the return distance of the transfer material 108 due to step back is longer.

The present invention has been made to solve the above problems, and an object of the present invention is that when there are a plurality of transfer surfaces, the transfer material can be effectively used without wasting it, and the transfer material can be transferred according to the transport state. It is an object of the present invention to provide a transfer apparatus and a transfer method thereof capable of shortening the return distance by step back, stabilizing the transfer of transfer material, and improving the yield.

The first 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 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 transferred. The material is conveyed in the opposite direction, and the transfer base material transporting portion 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. By rotating the back roller in the reverse direction, the substrate to be transferred is conveyed in the opposite direction, and the step back roller of the transfer material transfer section and the step back roller of the transfer substrate transfer section are rotated in the forward direction, and the transfer material is 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 transfer material transfer portion is used. By rotating the step back roller and the step back roller of the transfer base material transporting portion in the reverse direction, the transfer material and the transfer base material are placed between the non-transfer surface of the plate cylinder and the peripheral surface of the impression cylinder. In a transfer device that transports and steps back in the opposite direction through a gap between the transfer surfaces, the plate cylinder of the transfer unit has two or more transfer surfaces, and the distance between the transfer surfaces is the transfer of one transfer surface. The transfer material is sequentially transferred to the transfer base material by two or more transfer surfaces during one rotation of the plate cylinder, and the control unit controls the plate cylinder. After one rotation is completed, the region of the transfer material used for transfer by the first transfer surface by the next rotation is the transport direction of the region of the transfer material used by the second transfer surface in the previous rotation. The transfer apparatus is characterized in that the step back for transporting the transfer material in the reverse direction is controlled so as to be a region adjacent to the downstream side.

In the first transfer device of the present invention, the transfer material used for transfer from the transfer end position of the region of the transfer material used for transfer by the transfer surface during one rotation of the plate cylinder. The number of times transfer is possible within the interval to the transfer start position of the region can be the same as the number of transfer surfaces of the plate cylinder.
According to the transfer device having this configuration, more unused regions that are not used for transfer of the transfer material can be used for transfer.

The second 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 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 transferred. The material is conveyed in the opposite direction, and the transfer base material transporting portion 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. By rotating the back roller 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 to transfer the transfer material. 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 transfer material transfer portion is used. By rotating the step back roller and the step back roller of the transfer base material transporting portion in the reverse direction, the transfer material and the transfer base material are placed between the non-transfer surface of the plate cylinder and the peripheral surface of the impression cylinder. In a transfer device that transports and steps back in the opposite direction through a gap between the transfer surfaces, the plate cylinder of the transfer unit has two or more transfer surfaces, and the distance between the transfer surfaces is the transfer of one transfer surface. The transfer material is sequentially transferred to the transfer base material by two or more transfer surfaces during one rotation of the plate cylinder, and the control unit performs the previous rotation. If a specific region adjacent to the transfer direction downstream side of the region of the transfer material used for transfer by the second transfer surface in the above is available for transfer, after one rotation of the plate cylinder is completed, the next The control unit controls the step-back for transporting the transfer material in the reverse direction so that the region of the transfer material used for the transfer is the first transfer surface due to the rotation of the transfer material. If the region cannot be used for transfer, after one rotation of the plate cylinder is completed, the region of the transfer material used for transfer by the first transfer surface in the next rotation is the region most upstream in the transport direction in the previous rotation. It is characterized in that the step back for transporting the transfer material in the opposite direction is controlled so as to be a region adjacent to the upstream side in the transport direction of the region of the transfer material used for transfer. It is a transfer device as a sign.

In the second transfer device of the present invention, the control unit is a region used for the next transfer of the transfer material from the rotation speed of the plate cylinder and the transfer start position of the region used for the transfer of the transfer material. If the number of transferable times within the interval to the transcription start position is the same, it is determined that the specific region cannot be used for transcription, and if they do not match, the specific region is used for transcription. It can be a transfer device having a determination unit for determining that it can be performed.

The transfer method of the first transfer device of the present invention has two or more transfer surfaces, and the distance between the transfer surfaces is three times or more the distance required for transfer of one transfer surface. A transfer unit with an impression cylinder, a step back roller that conveys the transfer material in the forward and reverse directions by forward and reverse rotation, and a transfer substrate that conveys the substrate to be transferred in the forward and reverse directions by forward and reverse rotation. In the transfer method of the transfer device provided with the step back roller, the step back roller is rotated in the forward direction during one rotation of the plate cylinder to transport the transfer material and the substrate to be transferred in the positive direction. Regions spaced apart in the transport direction of the transfer material are sequentially transferred to the transfer substrate by one or more transfer surfaces, and after the transfer is completed, the step back roller is rotated in the reverse direction to transfer the transfer material and the transfer material. The substrate is conveyed in the opposite direction by a predetermined distance and stepped back, and the stepback roller is rotated in the forward direction again to convey the transfer material and the substrate to be transferred in the forward direction for transfer. After one rotation of the body is completed, the first transfer surface due to the next rotation transfers the region adjacent to the downstream side in the transport direction of the region of the transfer material used for the transfer by the second transfer surface in the previous rotation. It is a transfer method of a transfer apparatus characterized by transporting the transfer material in the reverse direction and stepping back as used in the above.

The transfer method of the second transfer device of the present invention has two or more transfer surfaces, and the distance between the transfer surfaces is three times or more the distance required for transfer of one transfer surface. A transfer unit with an impression cylinder, a step back roller that conveys the transfer material in the forward and reverse directions by forward and reverse rotation, and a transfer substrate that conveys the substrate to be transferred in the forward and reverse directions by forward and reverse rotation. In the transfer method of the transfer device provided with the step back roller, the step back roller is rotated in the forward direction during one rotation of the plate cylinder to transport the transfer material and the transfer base material in the positive direction. Regions spaced apart in the transport direction of the transfer material are sequentially transferred to the transfer substrate by one or more transfer surfaces, and after the transfer is completed, the step back roller is rotated in the reverse direction to transfer the transfer material and the transfer material. The substrate is conveyed in the opposite direction by a predetermined distance and stepped back, and the stepback roller is rotated in the forward direction again to convey the transfer material and the substrate to be transferred in the forward direction for transfer. During one rotation of the body, transfer is possible within the interval from the transfer end position of the transfer material region used for transfer by the transfer surface to the transfer start position of the transfer material region used for transfer by the next transfer surface. When the number of times is equal to or greater than the number of transfer surfaces of the plate cylinder, the first transfer surface due to the next rotation is transferred to the second transfer surface in the previous rotation after one rotation of the plate cylinder is completed. The transfer material is transported in the opposite direction and stepped back so that a specific region adjacent to the downstream side in the transport direction of the region of the transfer material used in the above can be used for transfer, and the transfer is performed during one rotation of the plate cylinder. The number of times the plate cylinder can be transferred within the interval from the transfer end position of the transfer material region used for transfer to the transfer start position of the transfer material region used for transfer by the next transfer surface. If it is less than the number of transfer surfaces, after one rotation of the plate cylinder is completed, the first transfer surface by the next rotation can determine whether the specific region can be used for transfer and can be used for transfer. If it is determined that the transfer material can be transported in the opposite direction and stepped back so that the specific region can be used for transfer, and if it is determined that the transfer material cannot be used for transfer, the most upstream side in the transport direction in the previous rotation. A transfer method for a transfer device, which comprises transporting the transfer material in the opposite direction and stepping back to a region adjacent to the upstream side of the region of the transfer material used for the transfer in the reverse direction so that the region can be used for transfer. Is.

In the transfer method of the second transfer device of the present invention, the transfer of the region used for the next transfer of the transfer material is performed from the rotation speed of the plate cylinder and the transfer start position of the region used for the transfer of the transfer material. If the number of transferable times within the interval to the start position matches, it is determined that the specific region cannot be used for transcription, and if they do not match, the specific region can be used for transcription. It can be a transfer method of the transfer device for determination.

According to the transfer device and the transfer method thereof of the present invention, when there are a plurality of transfer surfaces, the transfer material can be effectively used without wasting it, and the return distance by step back is shortened according to the transfer state of the transfer material. , The transfer of 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 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 of the 1st rotation and the 2nd rotation of a plate cylinder in 1st Embodiment. It is a schematic diagram of the transfer control of the transfer material from the 1st rotation to the 6th rotation of a plate cylinder in the 1st 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 schematic diagram of the transfer control of the transfer material from the 1st rotation to the 6th rotation of a plate cylinder in the second embodiment. It is a schematic diagram of the transfer control of the transfer material from the 1st rotation to the 6th rotation of a plate cylinder in the third embodiment. 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 first rotation and the second 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. It is a flowchart of the control method of the transfer apparatus 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 first transfer surface 22, a second transfer surface 23, and a third transfer surface 24 at intervals in the rotational direction, and has first, second, and second transfer surfaces. The transfer surfaces 22, 23, and 24 of No. 3 are provided on the embossed plate 25, which is shorter than the entire circumference of the plate cylinder 20. The surfaces other than the first, second, and third transfer surfaces 22, 23, and 24 of the plate cylinder 20 are non-transfer surfaces 26.

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 transfer base material 7 are nipped at the first, second, and third transfer surfaces 22, 23, 24 of the plate cylinder 20 and the peripheral surface of the impression cylinder 21, and the non-transfer surface 26 of the plate cylinder 20 is inserted. The peripheral surface of the impression cylinder 21 has a gap, and 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 one transfer surface of the plate cylinder 20 and the peripheral surface 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 covered by heating the transfer surface of the plate cylinder 20 to, for example, about 150 ° C. to 200 ° C. This is a transfer unit that thermally transfers to the transfer substrate 7. 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 substrate to be transferred 7 are nipped on one heated transfer surface of the plate cylinder 20 and the impression cylinder 21.
The layer of glue is melted by the heated transfer surface, and the region in contact with the transfer surface of the transfer material 6 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, 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 one transfer surface of the plate cylinder and the peripheral surface of the impression cylinder. do. 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 first, second, and third transfer surfaces 22, 23, and 24 will be described.
In FIG. 3, a frame corresponding to a distance required for transfer of one transfer surface is provided on the transfer material 6 and the transfer substrate 7, respectively, so that the transfer and transfer operations can be easily understood. 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 broken line is the transfer position 27 where the transfer material 6 and the transfer substrate 7 are nipped on one transfer surface of the plate cylinder 20 and the peripheral surface of the impression cylinder 21.
The distance between the first transfer surface 22 and the second transfer surface 23 of the plate cylinder 20 and the distance between the second transfer surface 23 and the third transfer surface 24 do not transfer the transfer base material 7. It is determined by the distance of the region (diagonal region in FIG. 3). 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.

FIG. 3A shows a state before the start of transfer, and the first, second, and third transfer surfaces 22, 23, and 24 are displaced from the transfer position 27.
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 first transfer surface 22 moves to the transfer position 27, the first transfer surface 22 transfers the transfer material 6 to the transfer substrate 7. 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, when the second transfer surface 23 moves to the transfer position 27, the second transfer surface 23 transfers the transfer material 6 to the transfer substrate 7. The region used for the transfer of the transfer material 6 is referred to as (2), and the region to which the transfer material 6 of the substrate 7 to be transferred is transferred is referred to as (B).

As shown in FIG. 3D, when the third transfer surface 24 moves to the transfer position 27, the third transfer surface 24 transfers the transfer material 6 to the transfer substrate 7. The region used for the transfer of the transfer material 6 is referred to as (3), and the region to which the transfer material 6 of the substrate 7 to be transferred is transferred is referred to as (C).
The transfer material 6 and the substrate 7 to be transferred are simultaneously conveyed at the same transfer rate, and the regions (1) to regions (3) used for the transfer of the transfer material 6 in FIGS. 3B to 3D are described as regions (3). The blank area between 1) and the area (2) and the blank area between the area (2) and the area (3) are unused areas that are not used for transcription. The distance of this unused region is the same as the distance of the shaded region of the transferred substrate 7.
If the transfer material 6 is collected and discarded by the transfer material recovery unit 4 while the unused area remains in the transfer material 6, the unused area is wasted. In particular, when gold leaf or silver leaf is used as the transfer material 6, the cost is high if there are many unused areas because the gold leaf or silver leaf is expensive.

Therefore, as shown in FIG. 3E, when the non-transfer surface region 28 between the third transfer surface 24 and the first transfer surface 22 in the plate cylinder 20 passes through the transfer position 27, the transfer material 6 is moved in the opposite direction ( Perform step back to convey in the direction of arrow b). That is, the transfer material 6 is conveyed in the opposite direction by a predetermined distance through the gap between the non-transfer surface 26 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 step back will be described later.
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. As a result, as shown in FIG. 3F, when the first transfer surface 22 moves to the transfer position 27 in the second rotation of the plate cylinder 20, the region (4) of the transfer material 6 coincides with the transfer position 27. The region (4) is used for the transfer of the first transfer surface 22. The region (4) is a region adjacent to the region (2) of the transfer material 6 used for transfer by the second transfer surface 23 on the downstream side in the transport direction in the first rotation of the plate cylinder 20.

In the state shown in FIG. 3E, the substrate 7 to be transferred is conveyed in the opposite direction, stepped back, and returned by a predetermined distance. The return distance of the transfer base material 7 is different from the return distance of the transfer material 6. After that, by transporting the transfer base material 7 in the positive direction in synchronization with the transfer material 6, as shown in FIG. 3F, the first transfer surface 22 is moved to the transfer position 27 in the second rotation of the plate cylinder 20. When the substrate 7 is moved, the blank region (D) of the substrate 7 to be transferred coincides with the transfer position 27, and the transfer material 6 is transferred to the blank region (D). The blank region (D) is a blank region 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 third transfer surface 24 in the first rotation of the plate cylinder 20. be.
As shown in FIG. 3G, when the second transfer surface 23 moves to the transfer position 27 in the second rotation of the plate cylinder 20, the region (5) of the transfer material 6 coincides with the transfer position 27, and the region (5) ) Is used for the transfer of the second transfer surface 23. The region (5) is a region adjacent to the region (3) of the transfer material 6 used for transfer by the third transfer surface 24 on the downstream side in the transport direction in the first rotation of the plate cylinder 20.

In the substrate 7 to be transferred, the blank region (E) coincides with the transfer position 27, and the transfer material 6 is transferred to the blank region (E). The blank region (E) is a blank region closest to the upstream side in the transport direction of the region (D) of the substrate 7 to be transferred on which the transfer material 6 is transferred on the first transfer surface 22 in the second rotation of the plate cylinder 20. be.
As shown in FIG. 3H, when the third transfer surface 24 moves to the transfer position 27 in the second rotation of the plate cylinder 20, the region (6) of the transfer material 6 coincides with the transfer position 27, and the region (6) ) Is used for the transfer of the third transfer surface 24. The region (6) is a region upstream of the region (3) of the transfer material 6 used for transfer by the third transfer surface 24 in the first rotation of the plate cylinder 20.
In the substrate 7 to be transferred, the blank region (F) coincides with the transfer position 27, and the transfer material 6 is transferred to the blank region (F). The blank region (F) is the blank region closest to the upstream side in the transport direction of the region (E) of the substrate 7 to be transferred on which the transfer material 6 is transferred on the second transfer surface 23 in the second rotation of the plate cylinder 20. be.

In the transfer from the first transfer surface 22 to the third transfer surface 24 of FIGS. 3F to 3H, the transfer material 6 and the substrate to be transferred 7 are synchronized and the same as in the case of FIGS. 3B to 3D. It is conveyed at the transfer rate.
By repeating this operation, a part of the unused region and the region (2) between the region (1) and the region (2) of the transfer material 6 used for the transfer in the first rotation of the plate cylinder 20 and the region ( A portion of the unused region between 2) and region (3) can be used for transcription.
That is, the transfer material 6 and the substrate 7 to be transferred are decelerated after transfer, step back, and accelerated before transfer after transfer on the third transfer surface 24 (last transfer surface) for each rotation of the plate cylinder 20. The transfer material 6 adjusts the position of the region used for the transfer so that the unused region can be used for the transfer, and the transfer base material 7 adjusts the position of the region used for the transfer so that the transfer material 6 can be transferred at the next position after the transfer. By repeatedly adjusting the position of the region to which the transfer material 6 is transferred, the unused region of the transfer material 6 can be reduced.

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 in the first rotation and the second rotation of the plate cylinder in the first embodiment, and FIG. 5 is a sixth rotation from the first rotation of the plate cylinder in the first embodiment. It is a schematic diagram of the transfer control of the transfer material to the eye.
As shown in FIG. 4, the distance required for transfer of one transfer surface 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. The distance between the transfer surfaces (distance from the transfer start position of one transfer surface to the transfer start position of the next transfer surface) is M, and the number of transfer surfaces of the plate cylinder 20 (number of transfers per rotation of the plate cylinder) is S. Define. In this description, the number S of transfer surfaces is 3.

The number of times transfer is possible between the transfer surfaces of the transfer material 6 (between the transfer start position of one transfer surface and the transfer start position of the next transfer surface) (the number of transfers between transfer surfaces) is the distance M between the transfer surfaces. And the distance L required for transfer of one transfer surface can be derived. If the number of transferable times is defined as N, then N = M ÷ L. This N is transferred by the first transfer surface 22 of the first rotation (in the region (1)), taking the transfer by the first transfer surface 22 and the second transfer surface 23 of the first rotation as an example. The number of times including transcription).
Therefore, the number of times that the transfer material 6 can be transferred within the unused region (for example, between the region (1) and the region (2) of FIG. 4) generated in the first rotation of the plate cylinder 20 is N-1. Become.
That is, in N-1, the next transfer is performed from the transfer end position (1) a of the region (1) in the transfer material 6 in FIG. 3D, where the transfer surface is the region of the transfer material 6 used for transfer. The number of times the surface can be transferred within the interval to the transfer start position of the region of the transfer material 6 used for transfer (for example, the transfer start position (2) b of the region (2) in FIG. 3D). Times.

As shown in FIG. 4, in the first rotation of the plate cylinder 20, the region (1) of the transfer material 6 is used for transfer by the first transfer surface 22, and the region of the transfer material 6 is used by the second transfer surface 23. (2) is used for transfer, and the region (3) of the transfer material 6 is used for transfer by the third transfer surface 24.
When the plate cylinder 20 shifts from the first rotation to the second rotation, that is, after the transfer by the third transfer surface 24, which is the last transfer surface of the first rotation, is completed, the plate cylinder 20 is conveyed in the positive direction at the transfer speed. The speed of the transfer material 6 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 to reach a predetermined transport speed is defined as the acceleration distance during step back, and the distance from the predetermined transport speed to 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 first transfer surface 22 which is the first transfer surface at the second rotation of the plate cylinder 20, the stopped transfer material 6 is accelerated and conveyed in the positive direction at the transfer speed.
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 region 28 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 deceleration distance during step back, the acceleration distance during step back, and the transfer speed during step back for transporting the transfer material 6 in the reverse direction (return direction) can also be set as the deceleration distance β after transfer and the acceleration distance before transfer. It is determined in the same way as 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 first transfer surface 22 in the second rotation of the plate cylinder 20 is the second transfer surface in the first rotation of the plate cylinder 20. Reference numeral 23 is a region adjacent to the downstream side in the transport direction of the region (2) of the transfer material 6 used for transfer. The region (5) of the transfer material 6 used by the second transfer surface 23 in the second rotation of the plate cylinder 20 is the transfer material 6 used by the third transfer surface 24 in the first rotation of the plate cylinder 20. Area (3) adjacent to the downstream side in the transport direction. The region (6) of the transfer material 6 used for transfer by the third transfer surface 24 in the second rotation of the plate cylinder 20 is the region used for transfer by the third transfer surface 24 in the first rotation of the plate cylinder 20. It is a newly supplied area located on the upstream side in the transport direction from (3).

Therefore, the return distance R1 can be derived from the following equation (1).
R1 = M × (S-2) + 2L + α + β ... Equation (1)
Since the number S of the transfer surfaces of the plate cylinder 20 is 3 and the distance M between the transfer surfaces is 4 times L as shown in FIG. 4, the return distance R1 from the equation (1) is 4L × 1 + 2L + α + β. Since α and β are each at a distance of 2 L, the return distance R1 is a distance of 10 L. Further, the transport distance R in the positive direction in one rotation of the plate cylinder is a distance of 13 L.
As shown in FIG. 4, when the plate cylinder 20 shifts from the first rotation to the second rotation, the transfer material 6 may be conveyed in the opposite direction by a distance of 10 L. As shown in FIG. 5, when the plate cylinder 20 shifts to the third rotation, the fourth rotation, the fifth rotation, and the sixth rotation, the transfer material 6 may be conveyed in the opposite direction by a distance of 10 L. In FIG. 5, the distance between α and β is set to 0 (α = 0, β = 0), and the figure is simplified for easy understanding.

As shown in FIG. 5, in the third rotation of the plate cylinder 20, the first transfer surface 22 is the region (7) of the transfer material 6 used for transfer, and the second transfer surface 23 is the transfer material 6 used for transfer. The region (8) is located on the downstream side in the transport direction of the regions (5) and (6) of the transfer material 6 used for transfer by the second transfer surface 23 and the third transfer surface 24 in the second rotation of the plate cylinder 20. Adjacent areas. The region (9) of the transfer material 6 used by the third transfer surface 24 for transfer in the third rotation of the plate cylinder 20 is larger than the region (6) used by the third transfer surface 24 in the second rotation. It is located on the upstream side in the transport direction and is a newly supplied area.
At the fourth rotation of the plate cylinder 20, the first transfer surface 22 is the region of the transfer material 6 used for transfer (10), and the second transfer surface 23 is the region of the transfer material 6 used for transfer (11). The second transfer surface 23 and the third transfer surface 24 are regions adjacent to the regions (8) and (9) of the transfer material 6 used for transfer on the downstream side in the transport direction at the third rotation of the body 20. The region (12) of the transfer material 6 used by the third transfer surface 24 for transfer at the fourth rotation of the plate cylinder 20 is the region (12) used for transfer by the third transfer surface 24 at the third rotation of the plate cylinder 20. It is located on the upstream side in the transport direction from 9) and is a newly supplied area.

At the fifth rotation of the plate cylinder 20, the first transfer surface 22 is the region of the transfer material 6 used for transfer (13), and the second transfer surface 23 is the region of the transfer material 6 used for transfer (14). The second transfer surface 23 and the third transfer surface 24 are regions adjacent to the regions (11) and (12) of the transfer material 6 used for transfer on the downstream side in the transport direction at the fourth rotation of the body 20. The region (15) of the transfer material 6 used for transfer by the third transfer surface 24 at the fifth rotation of the plate cylinder 20 is the transfer material used for transfer by the third transfer surface 24 at the fourth rotation of the plate cylinder 20. It is a newly supplied region located on the upstream side in the transport direction from the region (12) of 6.
At the sixth rotation of the plate cylinder 20, the first transfer surface 22 is the region of the transfer material 6 used for transfer (16), and the second transfer surface 23 is the region of the transfer material 6 used for transfer (17). The second transfer surface 23 and the third transfer surface 24 are regions adjacent to the regions (14) and (15) of the transfer material 6 used for transfer on the downstream side in the transport direction at the fifth rotation of the body 20. The region (18) of the transfer material 6 used by the third transfer surface 24 for transfer at the sixth rotation of the plate cylinder 20 is the transfer material used for transfer by the third transfer surface 24 at the fifth rotation of the plate cylinder 20. It is located on the upstream side in the transport direction from the region (15) of No. 6 and is a newly supplied region.

As shown in FIG. 5, a part of the unused region of the transfer material 6 generated in the first rotation of the plate cylinder 20 remains unused for the transfer, but all the unused regions generated in the second and subsequent rotations are transferred. It can be used for transcription.
Further, the return distance R1 is the same distance derived from the equation (1) regardless of the number of rotations of the plate cylinder 20.

A comparison of the return distance R1 by step back by the transfer device 1 of the embodiment and the return distance R10 by step back of the transfer device developed by the present inventors is as follows.
R1 = M × (S-2) + 2L + α + β
R10 = M × (S-1) + α + β
Assuming that M, S, α, and β are the same in each equation, and deriving the difference between R10 and R1, the following equation (2) is obtained.
Since R10-R1 = M-2L and N = M ÷ L to M = N × L,
R10-R1 = N × L-2L = (N-2) × L ... Equation (2)

From equation (2), it can be seen that if N is 3 or more, R1 is smaller than R10, and the larger N is, the larger the difference between R10 and R1 is. That is, the transfer device 1 of the embodiment can have a shorter return distance than the transfer device developed by the present inventors if N is 3 or more. Further, in the transfer device 1 of the embodiment, the return distance can be shortened as N is larger (when the number of times transfer is possible between transfer surfaces is larger).
Here, since M is a length including L, M is at least L or more.
Therefore, the minimum value of N is 1 from N = M ÷ L. However, when N = 1, there is no gap between the transfer surfaces, which is synonymous with the case where the plate cylinder 20 has one transfer surface.
Since this embodiment has two or more transfer surfaces as described above, N = 1 cannot be set.
When N = 2, R10-R1 = 0, and the return distance R1 by the step back of the transfer device 1 of the embodiment and the return distance R10 by the step back of the transfer device developed by the present inventors are the same. be. This is because, in the case of N = 2, the unused region is only for one transfer by one transfer surface, so that the return distance of either the transfer device 1 of the embodiment or the transfer device developed by the present inventor or the like is returned. This is because even if it is determined by the above method, it will be transferred to the same unused area as a result.
Therefore, in the transfer device 1 of the embodiment, N = M ÷ L is 3 or more.

Further, in the embodiment, the region of the transfer material 6 used for the transfer by the first transfer surface 22 which is the first transfer surface in the second rotation of the plate cylinder 20 is the second region in the first rotation of the plate cylinder 20. Since the second transfer surface 23, which is the transfer surface, is a region adjacent to the downstream side in the transport direction of the region used for transfer, in the transfer device 1 of the embodiment, the number S of the transfer surfaces of the plate cylinder 20 is at least 2. More than one.
In the transfer device 1 of the embodiment, since the return distance R1 by step back is shorter than the return distance R10 by step back of the transfer device developed by the present inventors, the deceleration distance β after transfer and the acceleration distance α before transfer In addition, the acceleration distance and deceleration distance during step back can be lengthened to slow down and accelerate. That is, the acceleration during deceleration and acceleration can be moderated.
Therefore, the inertial force acting on the step back rollers 33 and 40 on the supply side and the recovery side and the transfer material 6 can be reduced, and the transfer stability of the transfer material 6 can be improved.
Shortening the return distance is necessary when the transfer of the transfer material 6 is unstable. Therefore, in the transfer device 1 of the embodiment, when the transfer speed is slow and the transfer of the transfer material 6 is stable, transfer is executed by step back by the return distance R10 of the transfer device developed by the present inventors. If the transfer speed is high and the transfer of the transfer material 6 is unstable, transfer may be executed by step back with the return distance R1.
By properly using the return distances R1 and R10 according to the transfer conditions such as the transfer speed, it is possible to effectively use the transfer material 6 without wasting it, and to stabilize the transfer of the transfer material 6 and improve the yield. , It is possible to achieve both optimally.

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 108 and the transfer state of the transfer base material 109 in the transfer device developed by the present inventors. Is shown in FIG. 6 in comparison with each other.
FIG. 6 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 with the transfer state of the transfer material and the substrate to be transferred of the transfer device developed by the present inventors. The horizontal axis indicates the number of rotations of the plate cylinder, and the vertical axis indicates the normalized value obtained by dividing the transfer distance between the transfer material and the substrate to be transferred by the distance L required for transfer of one transfer surface. 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 and the transfer base material 109 is shown by the same solid line X, and step back is performed for each rotation of the plate cylinder to control the position of the transfer region of the transfer base materials 7 and 109. ing.

The transport state of the transfer material 6 in the transfer device 1 of the embodiment is shown by the broken line Y, and the transport state of the transfer material 108 in the transfer device developed by the present inventors is shown by the alternate long and short dash line Z.
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 108 are while changing negatively. Corresponds to the absolute value of the distance.
From this, the transfer base material 7 in the transfer device 1 of the embodiment and the transfer base material 109 of the transfer device developed by the present inventors are conveyed at the same transfer distance R (13L). It can be confirmed that the return distance R1 (10L) of the transfer material 6 in the transfer device 1 of the embodiment is shorter than the return distance R10 (12L) of the transfer material 108 in the transfer device developed by the present inventors.
Further, since the comparison is performed under the same conditions except for the return distance, the transfer distance R conveyed in the positive direction during the transfer operation of the transfer material 6 and the transfer base material 7 in the transfer device 1 of the embodiment is 13 L. The transfer distance R of the transfer material 108 and the substrate 109 to be transferred in the transfer device developed by the present inventors is also 13 L in the positive direction during the transfer operation, and the transfer distances R of both are the same. Is.

Further, as shown by the broken line Y in FIG. 6, switching of the transport direction at the time of step back of the transfer material 6 of the embodiment (switching from transport in the forward direction to transport in the reverse direction, and from transport in the reverse direction to positive). Switching to transport in the direction) and switching of the transport direction at the time of step back of the substrate 7 to be transferred according to the embodiment (from transport in the forward direction to transport in the reverse direction) as shown by the solid line X in FIG. Switching, switching from reverse transport to forward transport) is performed at the same timing of rotation of the plate cylinder 20, and the transfer material 6 and the transfer base material 7 start transport in the reverse direction at the same timing, in the forward direction. The transportation is started. In this case, as described above, since the return distance of the transfer material 6 and the return distance of the transfer base material 7 are different, the transfer speed of the transfer material 6 in the reverse direction and the transfer speed of the transfer base material 7 in the reverse direction are different. Only the difference is changed and the difference in the return distance is adjusted.
However, since the timing of switching from the forward transfer to the reverse transfer at the time of step back of the transfer material 6 and the transfer base material 7 does not have to be the same timing, the transfer material 6 and the transfer base material 7 need to be transferred at the same timing. Depending on the difference in the return distance, both the timing of the transfer start in the reverse direction and the timing of the transfer start in the forward direction and the transfer speed in the reverse direction may be changed.
This also applies to the transfer material 108 and the transfer base material 109 of the transfer device developed by the present inventors, as shown by the alternate long and short dash line Z and the solid line X in FIG.

In the transfer device 1 of the embodiment, the number of times N that can be transferred between the transfer surfaces is 4, the number S of the transfer surfaces of the plate cylinder is 3, and (N-1) = S. That is, the number of times N-1 that can be transferred within the interval from the transfer end position of the region used for the transfer of the transfer material 6 to the transfer start of the region used for the next transfer of the transfer material 6 is the transfer surface of the plate cylinder. Matches the number.
However, it is not necessary to set (N-1) = S.
For example, (N-1) <S may be set, or (N-1)> S may be set.

FIG. 7 is a schematic diagram of transfer control of the transfer material from the first rotation to the sixth rotation of the plate cylinder in the second embodiment in which (N-1) <S.
In this embodiment, the number of times N that can be transferred between the transfer surfaces is 3, the number S of the transfer surfaces of the plate cylinder is 3, and (N-1) <S. In addition, the distance between α and β is set to 0 (α = 0, β = 0), and the figure is simplified for easy understanding).
In the first, second, and third rotations of the plate cylinder 20, the return distance R1 is transferred as the distance of 5 L derived from the equation (1), as in the first embodiment, but the plate cylinder 20 Assuming that the return distance R1 is a distance of 5 L derived from the equation (1) when transferring to the fourth rotation, the region of the transfer material 6 to be used by the first transfer surface 22 for transfer at the fourth rotation is It becomes the region (3) used for the transfer in the first rotation, and the transfer cannot be performed.

Therefore, at the time of transition from the third rotation to the fourth rotation, that is, after the transfer by the third transfer surface 24 which is the final transfer surface of the third rotation is completed, the return distance R1 is set to the following formula (3). The transfer direction of the region (9) of the transfer material 6 used by the first transfer surface 22 for transfer at the fourth rotation and the region (9) used by the third transfer surface 24 at the third rotation. The area (10) adjacent to the upstream side is used.
R1 = α + β ... Equation (3)
When shifting from the 4th rotation to the 5th rotation of the plate cylinder 20, the return distance R1 is set to the distance of 5L derived from the equation (1). Even when shifting from the 5th rotation to the 6th rotation, the return distance R1 is set to the distance of 5L derived from the equation (1).
That is, when the rotation speed P of the plate cylinder 20 satisfies the above-mentioned P = k × N and the equation (12), the distance derived from the equation (3) is set as the return distance R1 and the equation (12) is satisfied. If not, the distance derived from the equation (1) is used as the return distance R1.

FIG. 8 is a schematic diagram of transfer control of the transfer material from the first rotation to the sixth rotation of the plate cylinder in the third embodiment in which (N-1)> S.
In this embodiment, the number of times N that can be transferred between the transfer surfaces is 5, the number S of the transfer surfaces of the plate cylinder is 3, and (N-1)> S. Further, the distance between α and β is set to 0 (α = 0, β = 0), and the figure is simplified for easy understanding.
Regardless of the number of rotations of the plate cylinder 20, the distance of 7 L derived from the equation (1) is transferred as the return distance R1 as in the first embodiment.

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 distance derived from the equation (1), the distance derived from the equation (3), and the like are set according to the input parameters, and the transfer of the transfer material 6 and the transfer base material 7 is started. Step 3 (S3).
Based on the input parameters, it is determined that (N-1) ≧ S, and the step back setting is determined. As described above, N is determined by the value rounded down to the nearest whole number. Step 4 (S4). That is, the control unit 5 has a determination unit (not shown) for determining (N-1) ≧ S.
When (N-1) ≥ S is satisfied, that is, when (N-1) is S or more, the transfer material 6 and the transfer base material 7 are simultaneously transferred at a constant transfer rate, and the plate cylinder is used. Transfer for one rotation is performed. That is, when (N-1) = S, the transcription of the first embodiment is started, and when (N-1)> S, the transcription of the third embodiment is started. Step 5 (S5).

The transfer base material 7 is stepped back every one rotation of the plate cylinder. Step 6 (S6).
The transfer material 6 always steps back with the distance (M × (S-2) + 2L + α + β) derived from the equation (1) as the return distance R1 regardless of the number of rotations of the plate cylinder. Step 7 (S7).
That is, when (N-1) ≧ S is satisfied, the transfer operation of the first embodiment or the third embodiment is performed by repeating the processes of steps 5 (S5) to 7 (S7). Performs morphological transfer operation.
When (N-1) ≧ S is not satisfied, that is, when (N-1) is less than S, the variable i for counting the number of rotations of the plate cylinder is set to 0 (i = 0). Step 8 (S8).
The transfer material 6 and the substrate 7 to be transferred are simultaneously transferred at a constant transfer rate, and transfer for one rotation of the plate cylinder is started. At this time, 1 is added to the variable i that counts the number of rotations of the plate cylinder (i = i + 1). Step 9 (S9).
The transfer base material 7 is stepped back for each rotation of the plate cylinder. Step 10 (S10).

After the transfer for one rotation of the plate cylinder, the return distance R1 for step back is determined from the condition of i = N. As described above, N is determined by the value rounded down to the nearest whole number. Step 11 (S11).
That is, the control unit 5 has a determination unit (not shown) for determining whether or not the variable i for counting the number of rotations of the plate cylinder 20 and the number of transferable times N between the transfer surfaces of the transfer material 6 match. Have.
If the condition of i = N is not satisfied, there is an unused area that can be used by returning only the distance derived from the equation (1). Therefore, the return distance R1 is derived from the equation (1) (M × (S). -2) + 2L + α + β). Step 12 (S12).
When the condition of i = N is satisfied, since there is no unused area that can be used by returning only the distance derived from the equation (1), the return distance R1 is set to the distance (α + β) derived from the equation (3). Step 13 (S13).
When the process of step 13 (S13) is executed, the variable i is returned to 0 (i = 0). That is, the count of the number of rotations of the plate cylinder is reset. Step 14 (S14).

When (N-1) ≧ S is not satisfied, the transfer material 6 is generated by intermittent transfer (transport including step back) by repeating the processes from step 9 (S9) to step 14 (S14). Unused areas are used for transcription.
That is, when (N-1) ≧ S is not satisfied, the transfer operation of the second embodiment is performed.
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.
By performing the transfer operation as shown in the flowchart shown in FIG. 9, the transfer operation according to the parameters required for transfer such as L, M, and S can be automatically selected, so that the operator of the transfer device needs to perform the transfer. The operation is simple because various parameters may be input to the control unit 5.
Not limited to this, since it is known in advance from the plate cylinder 20 whether or not (N-1) ≧ S, the plate cylinder 20 performs the steps S1, S2, S3, S5, S6, and S7 in the flowchart of FIG. The control unit 5 having the configuration to be performed may be the control unit 5 that performs the steps of S1, S2, S3, S8, S9, S10, S11, S12, S13, and S14 in the flowchart of FIG.
Further, the determination unit for determining step 4 (S4) and the determination unit for determining step 11 (S11) may be independent determination units, and both step 4 (S4) and step 11 (11) may be used. It may be one determination unit for determination.
As is clear from the above description, the transfer device 1 of the embodiment can shorten the return distance R1 by the step back of the transfer material 6 with respect to the transfer device developed by the present inventors.
When the return distance R1 of the transfer material 6 is short, if the time for one rotation of the plate cylinder 20 is the same, it takes time to decelerate the transfer material 6 after transfer, accelerate before transfer, decelerate during step back, and accelerate. Therefore, it is possible to switch between acceleration and deceleration slowly, and the inertial force acting on the step back rollers 33 and 40 on the supply side and the recovery side and the transfer material 6 during acceleration and deceleration of the transfer material 6 is reduced. can.

This is because the transfer of the transfer material 6 can be stabilized by reducing the inertial force acting on the step back rollers 33 and 40 on the supply side and the recovery side and the transfer material 6 during acceleration and deceleration of the transfer material 6. , There are few transfer mistakes and the yield can be improved.

In particular, when the number of times N that can be transferred between the transfer surfaces and the number S of the transfer surfaces of the plate cylinder 20 satisfy (N-1) = S, the efficiency of using the unused region of the transfer material 6 is the present. Compared with the transfer device developed by the inventors, the difference is slightly less than the unused area for one rotation of the plate cylinder, and there is not much influence in practical use. Rather than this, it is important that the return distance R1 can be made shorter than the return distance R10 of the transfer device developed by the present inventors to improve the yield caused by the instability of the transfer of the transfer material 6. The transfer device 1 of the embodiment is advantageous in terms of production cost to the transfer device developed by the present inventors. The larger the amount to be transferred, the more advantageous in terms of production cost.

In the embodiment, the distance L required for transfer of one transfer surface, the distance between transfer surfaces (distance from the transfer start position of one transfer surface to the transfer start position of the next transfer surface) M, and the plate cylinder 20. It was explained that the number of transfer surfaces (number of transfers per rotation of the plate cylinder) S and the like are input to the control unit 5, but instead of either M or S, the transferred cover produced by one rotation of the plate cylinder 20 is produced. The length C of the transfer base material 7 may be input to the control unit 5. Since the relationship between M, S, and C is C = M × S, any two values may be input to the control unit 5 from M, S, and C.
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 25 of the plate cylinder 20.
The distance L required for transfer of one transfer surface 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).
Further, the distance L required for transfer of one transfer surface cannot be set larger than the length C of the transferred substrate 7 to be produced, and L> C cannot be set.
That is, since C = M × S and S is an integer of 1 or more, C ≧ M, and M ≧ L from the definition of M, so C ≧ L holds. Therefore, since L needs to satisfy C ≧ L, the maximum value that can be set for L is the maximum value of C.
The distance between the transfer surfaces (distance from the transfer start position of one transfer surface to the transfer start position of the next transfer surface) M can be set to a value in the range of 355.6 mm (maximum value of C) from L. ..
In the present invention, in addition to the settable range of each of the above parameters, it is satisfied that N = M ÷ L is 3 or more and the number S of the transfer surfaces of the plate cylinder 20 is at least 2 or more as described above. There is a need.

In the embodiment, when the values of L, M, S, and C input to the control unit 5 are outside the above configurable range, and when L> C, control is performed because the transferable condition is not satisfied. Part 5 determines that an error is performed 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, M, S, and C shown here are examples. The upper limit and the lower limit of the values of L, M, S, and C are determined according to 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 ... The impression cylinder, 22 ... the first transfer surface, 23 ... the second transfer surface. 24 ... 3rd transfer surface, 26 ... non-transfer surface, 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 ... collection side shock absorber, 42 ... collection side feed roller, 43 ... take-up shaft.

Claims (7)

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 two or more transfer surfaces, and the distance between the transfer surfaces is three times or more the distance required for transfer of one transfer surface. During rotation, the transfer material is sequentially transferred to the transfer substrate by two or more transfer surfaces.
In the control unit, after one rotation of the plate cylinder is completed, the region of the transfer material used for transfer by the first transfer surface by the next rotation is used for transfer by the second transfer surface in the previous rotation. A transfer device comprising controlling a step-back for transporting the transfer material in the opposite direction so as to be a region adjacent to the downstream side of the transfer material region in the transport direction. In the transfer apparatus according to claim 1,
Within the interval from the transfer end position of the transfer material region used for transfer by the transfer surface to the transfer start position of the transfer material region used for transfer by the next transfer surface during one rotation of the plate cylinder. A transfer device in which the number of transferable times matches the number of transfer surfaces of the plate cylinder. 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 two or more transfer surfaces, and the distance between the transfer surfaces is three times or more the distance required for transfer of one transfer surface. During rotation, the transfer material is sequentially transferred to the transfer substrate by two or more transfer surfaces.
When the specific region adjacent to the downstream side in the transport direction of the region of the transfer material used for the transfer by the second transfer surface in the previous rotation is available for the transfer, the control unit of the plate cylinder. After one rotation is completed, the step back for transporting the transfer material in the reverse direction so that the region of the transfer material used for the transfer by the first transfer surface by the next rotation becomes the specific region is controlled.
If the specific region cannot be used for transfer, the control unit may use the region of the transfer material for which the first transfer surface by the next rotation is used for transfer after one rotation of the plate cylinder is completed. The transfer is characterized in that the step back for transporting the transfer material in the reverse direction is controlled so as to be a region adjacent to the region upstream in the transport direction of the region of the transfer material used for the transfer on the most upstream side in the transport direction in rotation. Device. In the transfer apparatus according to claim 3,
The control unit can transfer within the number of rotations of the plate cylinder and the interval from the transfer start position of the region used for transferring the transfer material to the transfer start position of the region used for the next transfer of the transfer material. If the number of times is the same, it is determined that the specific region cannot be used for transcription, and if they are not the same, the determination unit is provided to determine that the specific region can be used for transcription. Transfer device. A transfer unit having a plate cylinder and an impression cylinder having two or more transfer surfaces and having a distance between the transfer surfaces three times or more the distance required for transfer of one transfer surface.
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.
During one rotation of the plate cylinder, the step back roller is rotated forward to transport the transfer material and the transfer base material in the positive direction, and the transfer material is spaced by two or more transfer surfaces in the transfer direction. The regions to be transferred are sequentially transferred to the transfer base material, and after the transfer is completed, the step back roller is rotated in the reverse direction to transport the transfer material and the transfer base material in the opposite directions by a predetermined distance and step. Back, the step back roller is rotated forward again to transport the transfer material and the transfer base material in the positive direction for transfer.
After one rotation of the plate cylinder is completed, the first transfer surface due to the next rotation forms a region adjacent to the downstream side in the transport direction of the region of the transfer material used for transfer by the second transfer surface in the previous rotation. , A method for transferring a transfer device, which comprises transporting the transfer material in the reverse direction and stepping back so as to be used for transfer. A transfer unit having a plate cylinder and an impression cylinder having two or more transfer surfaces and having a distance between the transfer surfaces three times or more the distance required for transfer of one transfer surface.
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.
During one rotation of the plate cylinder, the step back roller is rotated forward to transport the transfer material and the transfer base material in the positive direction, and the transfer material is spaced by two or more transfer surfaces in the transfer direction. The regions to be transferred are sequentially transferred to the transfer base material, and after the transfer is completed, the step back roller is rotated in the reverse direction to transport the transfer material and the transfer base material in the opposite directions by a predetermined distance and step. Back, the step back roller is rotated forward again to transport the transfer material and the transfer base material in the positive direction for transfer.
Within the interval from the transfer end position of the transfer material region used for transfer by the transfer surface to the transfer start position of the transfer material region used for transfer by the next transfer surface during one rotation of the plate cylinder. When the number of transferable times is equal to or greater than the number of transfer surfaces of the plate cylinder,
After one rotation of the plate cylinder is completed, the first transfer surface due to the next rotation is adjacent to the specific downstream side in the transport direction of the region of the transfer material used for transfer by the second transfer surface in the previous rotation. The transfer material is transported in the reverse direction and stepped back so that the region can be used for transfer.
Within the interval from the transfer end position of the transfer material region used for transfer by the transfer surface to the transfer start position of the transfer material region used for transfer by the next transfer surface during one rotation of the plate cylinder. When the number of transferable times is less than the number of transfer surfaces of the plate cylinder,
After one rotation of the plate cylinder is completed, it is determined whether the first transfer surface by the next rotation can use the specific region for transfer.
If it is determined that the transfer material can be used for transfer, the transfer material is conveyed in the reverse direction and stepped back so that the specific region can be used for transfer.
If it is determined that the transfer material cannot be used for transfer, the transfer material is used so that the region adjacent to the upstream side in the transport direction of the region of the transfer material used for the transfer on the upstream side in the transfer direction in the previous rotation can be used for transfer. A transfer method for a transfer device, which comprises transporting in the opposite direction and stepping back. In the transfer method of the transfer device according to claim 6,
The number of rotations of the plate cylinder and the number of times that transfer is possible within the interval from the transfer start position of the region used for transferring the transfer material to the transfer start position of the region used for the next transfer of the transfer material is one. A transfer method of a transfer device that determines that the specific region cannot be used for transcription, and if they do not match, determines that the specific region can be used for transcription.

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