EP3815901A1 - Appareil de transfert et procédé de transfert correspondant - Google Patents

Appareil de transfert et procédé de transfert correspondant Download PDF

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Publication number
EP3815901A1
EP3815901A1 EP20201346.2A EP20201346A EP3815901A1 EP 3815901 A1 EP3815901 A1 EP 3815901A1 EP 20201346 A EP20201346 A EP 20201346A EP 3815901 A1 EP3815901 A1 EP 3815901A1
Authority
EP
European Patent Office
Prior art keywords
transfer
area
plate cylinder
transferred
cycle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20201346.2A
Other languages
German (de)
English (en)
Other versions
EP3815901B1 (fr
Inventor
Seiko Sugiyama
Shinobu UOZUMI
Toshihiro Takahashi
Kazuya OKUYAMA
Toshihiro Saga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miyakoshi Printing Machinery Co Ltd
Original Assignee
Miyakoshi Printing Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication of EP3815901A1 publication Critical patent/EP3815901A1/fr
Application granted granted Critical
Publication of EP3815901B1 publication Critical patent/EP3815901B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/02—Apparatus or machines for carrying out printing operations combined with other operations with embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F16/00—Transfer printing apparatus
    • B41F16/0006—Transfer printing apparatus for printing from an inked or preprinted foil or band
    • B41F16/004—Presses of the reciprocating type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F16/00—Transfer printing apparatus
    • B41F16/0006—Transfer printing apparatus for printing from an inked or preprinted foil or band
    • B41F16/002—Presses of the rotary type
    • B41F16/0033—Presses of the rotary type with means for applying print under pressure only, e.g. using pressure sensitive adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F16/00—Transfer printing apparatus
    • B41F16/0006—Transfer printing apparatus for printing from an inked or preprinted foil or band
    • B41F16/002—Presses of the rotary type
    • B41F16/0026—Presses of the rotary type with means for applying print under heat and pressure, e.g. using heat activable adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F16/00—Transfer printing apparatus
    • B41F16/0006—Transfer printing apparatus for printing from an inked or preprinted foil or band
    • B41F16/006—Arrangements for moving, supporting or positioning the printing foil or band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F16/00—Transfer printing apparatus
    • B41F16/0006—Transfer printing apparatus for printing from an inked or preprinted foil or band
    • B41F16/0093—Attachments or auxiliary devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/20—Arrangements for moving, supporting or positioning the printing foil

Definitions

  • a transfer apparatus in which a transfer material is transferred to a base material to be transferred is disclosed in Japanese Patent No. 3650197 .
  • the transfer apparatus disclosed in Japanese Patent No. 3650197 is provided with an embossing mechanism (corresponding to a transfer part of the present invention) constituted by a cylinder for embossing (corresponding to a plate cylinder of the present invention) and an impression cylinder, a carrying means for carrying wound foil for embossing (corresponding to a transfer material of the present invention), and a layer of material (corresponding to a base material to be transferred of the present invention) etc.
  • wound foil for embossing and the layer of material are advanced and passed between the cylinder for embossing and the impression cylinder while being stacked together, so that the wound foil is embossed (corresponding to "transferred” in the present invention) to the layer of material by a metal plate for embossing of the cylinder for embossing (corresponding to a transfer face of the present invention).
  • an amount of area in the wound foil for embossing which is carried while being unused for embossing may be reduced to some extent, however such reduced amount of area is small and the waste of the wound foil for embossing can be hardly reduced.
  • inventors of the present invention developed a transfer apparatus in which an amount of area of a transfer material which is carried while being un-transferred can be reduced, so that the waste of the transfer material can be significantly reduced.
  • the transfer apparatus rotates the plate cylinder 100 and the impression cylinder 101 at the transfer speed in synchronization with each other, and carries the transfer material 106 and the base material to be transferred 107 in the forward direction by forwardly rotating the step-back rollers (not shown) to make them pass between the plate cylinder 100 and the impression cylinder 101 while being stacked each other.
  • the transfer material 106 is transferred to the base material to be transferred 107 by the transfer face 103 of the plate cylinder 100 and a peripheral surface of the impression cylinder 101 while the plate cylinder 100 makes one rotation (revolution).
  • the transfer apparatus rotates the step-back rollers (not shown) in the backward direction, while the plate cylinder 100 makes one rotation, to perform (or take) step back of the transfer material 106 and the base material to be transferred 107 by carrying them in the backward direction by a prescribed distance, so that an area available for transfer of the transfer material 106 and an area of the base material to be transferred 107 where the transfer material 106 is to be transferred are adjusted.
  • the transfer apparatus carries the transfer material 106 and the base material to be transferred 107 in the forward direction by forwardly rotating the step-back rollers (not shown) again to perform transfer at the time of second rotation of the plate cylinder 100.
  • step back control of the transfer material 106 and the base material to be transferred 107 includes acceleration and deceleration control while being backwardly carried.
  • the step back control will be detailed later.
  • frames each corresponding to a distance needed for transfer by the transfer face 103 are provided on the transfer material 106 and the base material to be transferred 107 to facilitate an understanding of the carrying action and the transfer operation. Note that, in an actual transfer apparatus, such frames are not provided on the transfer material 106 and the base material to be transferred 107.
  • a framed hatched area of the base material to be transferred 107 indicates an area where the transfer is not performed (area for use in other purpose such as printing other than transfer), a framed blank area (hereinafter referred to a blank area) indicates an area where the transfer is to be performed.
  • a dot line indicates a transfer position 108 where the transfer material 106 and the base material to be transferred 107 are nipped by the transfer face 103 of the plate cylinder 100 and the peripheral surface of the impression cylinder 101.
  • Fig.9A shows a state before starting transfer, in which the transfer face 103 is displaced from the transfer position 108.
  • the plate cylinder 100 is rotated, and the transfer material 106 and the base material to be transferred 107 are carried in a forward direction (direction of the arrow a) at a same transfer speed in synchronization with each other.
  • the step back of the base material to be transferred 107 is performed to carry backwardly and return it by a prescribed distance in a state shown in Fig.9C .
  • a return distance of the base material to be transferred 107 is different from a return distance of the transfer material 106.
  • an area (3) of the transfer material 106 is matched with the transfer position 108 so that the area (3) is used for transfer by the transfer face 103.
  • the area (3) of the transfer material 106 is an area adjacent to and on the upstream side of the area (2) of the transfer material 106 in the carrying direction, the area (2) having been used for transfer at the time of second rotation of the plate cylinder 100.
  • the transfer material 106 at a stop is accelerated and carried at the transfer speed in the forward direction, until starting the transfer by the transfer face 103 at the time of second rotation of the plate cylinder 100.
  • a distance until stopping the transfer material 108 from a state that it is forwardly carried at the transfer speed by decelerating it is defined as ⁇ .
  • a distance until the transfer material 108 reaches at the transfer speed by forwardly accelerating it from a state that it is at a stop after performing the step back is defined as ⁇ .
  • the deceleration distance ⁇ after transferring and the acceleration distance ⁇ before transferring are parameters determined depending on characteristics of a driving motor for rotationally driving the step-back rollers (not shown), the carrying speed, a return distance due to the step back, and a length of the non-transfer face 105 of the plate cylinder 100.
  • a distance over which the transfer material 106 is backwardly carried during one step back is defined as a return distance R10.
  • the return distance R10 will be described below.
  • the area (5) of the transfer material 106 which is used for transfer at the time of fifth rotation of the plate cylinder 100 is an area adjacent to and on the upstream side of the area (4) in the carrying direction, the area (4) having been used for transfer at the time of fourth rotation.
  • the return distance R10 is the distance of 4L.
  • an inertia force may act on the transfer material 106 in the carrying direction before switching. Due to such inertia force, when the transfer material 106 has poor followability to a change of the forward or backward rotation of the step-back rollers (not shown) for carrying the transfer material 106,the transfer material 106 would likely be deformed or split so that the carrying action of the transfer material 106 would sometimes become unstable.
  • a transfer apparatus of the present invention may comprise a transfer part, a carrying part of a transfer material carrying the transfer material to the transfer part, a carrying part of a base material to be transferred carrying the base material to be transferred to the transfer part and a control part, wherein the transfer part has an impression cylinder and a plate cylinder, the plate cylinder has a transfer face which contacts with a peripheral surface of the impression cylinder and a non-transfer face which does not contact with the peripheral surface of the impression cylinder, the carrying part of the transfer material has step-back rollers and carries the transfer material forwardly by rotating forwardly the step-back rollers and the transfer material backwardly by rotating backwardly the step-back rollers, the carrying part of the base material to be transferred has step-back rollers and carries the base material to be transferred forwardly by rotating forwardly the step-back rollers and the base material to be transferred backwardly by rotating backwardly the step-back rollers, the step-back rollers of the carrying part of the transfer material and the step-back rollers of the carrying
  • control part may control the step back for backwardly carrying the base material to be transferred for each rotation of the plate cylinder.
  • the method may further comprise the steps of: judging whether an available area for transfer exists within the range of the used transfer material for transfer until the previous cycle after finishing one cycle and when performing transfer at the next cycle, and performing the step back of the transfer material to carry it backwardly by rotating the step-back rollers backwardly, wherein the distance over which the transfer material is carried backwardly is a distance making it possible that the area of the transfer material to be used for the first transfer at the next cycle comes to the area adjacent to and on the upstream side of the area in the carrying direction, which has been used for the first transfer at the previous cycle, when judged that it exists, and, performing the step back of the transfer material to carry it backwardly by rotating the step-back rollers backwardly, wherein the distance over which the transfer material is carried backwardly is a distance making it possible that the area of the transfer material to be used for the first transfer at the next cycle comes to the area adjacent to and on the upstream side of an area in the carrying direction, which has been used
  • the method may further comprise the steps of: judging that the available area for transfer does not exist, when the number of times of repeated cycle is matched with an available number of times of transfer within a distance between transfer faces corresponding to a length of an outer periphery of the plate cylinder, and judging that the available area for transfer exists, when being not matched.
  • the method may further comprise the step of: performing the step back for carrying the base material to be transferred backwardly by rotating the step-back rollers backwardly for each rotation of the plate cylinder.
  • the transfer material can be effectively utilized without wasting, and the number of times of step backs can be reduced so that the carrying action of the transfer material can be stabilized and the yield can be improved.
  • Fig.1 is a front view of the whole of one example of the transfer apparatus of an embodiment of the present invention.
  • a transfer apparatus 1 of the present invention comprises a transfer part 2, a supply part 3 of a transfer material, a collection part 4 of the transfer material, a control part 5, and a carrying part of a base material to be transferred (not shown), etc., and a carrying part of the transfer material is constituted by the supply part 3 of the transfer material and the collection part 4 of the transfer material.
  • the transfer part 2, the supply part 3 of the transfer material, the collection part 4 of the transfer material, and the control part 5 are provided on a main body 1a of the apparatus. Note that, a portion on which the control part 5 is provided is not limited to the main body 1a of the apparatus, it may be provided on other portion than the main body 1a of the apparatus.
  • the plate cylinder 20 has a transfer face 22, the transfer face 22 is provided on an embossing plate 23 which is shorter than the whole peripheral length of the plate cylinder 20.
  • a face of the plate cylinder 20 other than the transfer face 22 is a non-transfer face 24. In other words, the plate cylinder 20 has only one transfer face 22.
  • the plate cylinder 20 and the impression cylinder 21 are synchronously rotated by one drive motor (not shown) at a fixed speed according to the transfer speed.
  • the plate cylinder 20 is rotated in the counterclockwise direction and is not rotated in the clockwise direction.
  • the impression cylinder 21 is rotated in the clockwise direction and is not rotated in the counterclockwise direction.
  • a transfer material 6 supplied from the supply part 3 of the transfer material and a base material to be transferred 7 carried by the carrying part of the base material to be transferred (not shown) are carried through a gap between the plate cylinder 20 and the impression cylinder 21.
  • the transfer material 6 and the base material to be transferred 7 are nipped by the transfer face 22 of the plate cylinder 20 and a peripheral surface of the impression cylinder 21, the non-transfer face 24 of the plate cylinder 20 and the peripheral surface of the impression cylinder 21 have a gap there-between, the transfer material 6 and the base material to be transferred 7 are carried through the gap.
  • the control part 5 which is for example a CPU (Central Processing Unit) controls a carrying action of the transfer material 6 and the base material to be transferred 7 and rotations of the plate cylinder 20 and the impression cylinder 21.
  • CPU Central Processing Unit
  • the supply part 3 of the transfer material has an unwinding shaft 30, a feed roller 31 on the supplying side provided on the downstream side of the unwinding shaft 30 in the supplying direction, a buffer device 32 on the supplying side provided on the downstream side of the feed roller 31 on the supplying side in the supplying direction, and a step-back roller 33 on the supplying side provided on the downstream side of the buffer device 32 on the supplying side in the supplying direction.
  • the feed roller 31 on the supplying side is rotationally driven, so that the transfer material 6 in a roll shape which is fitted to the unwinding shaft 30 is unwound and carried toward the buffer device 32 on the supplying side.
  • the buffer device 32 on the supplying side is a loop-vacuum which holds the transfer material 6 downward in the shape of U in a box 35 using vacuum pressure.
  • the collection part 4 of the transfer material has a step-back roller 40 on the collecting side, a buffer device 41 on the collecting side provided on the downstream side of the step-back roller 40 on the collecting side in the collecting direction, a feed roller 42 on the collecting side provided on the downstream side of the buffer device 41 on the collecting side in the collecting direction, and a winding shaft 43 provided on the downstream side of the feed roller 42 on the collecting side in the collecting direction.
  • the step-back roller 40 on the collecting side is rotated forwardly and backwardly by a driving motor (not shown), and around the outer peripheral surface of it, the transfer material 6 which has not been used is wound.
  • 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 collecting side, so that the transfer material 6 which has not been used for transfer can be carried while being held by the step-back roller 40 on the collecting side and the nip roller 44.
  • the buffer device 41 on the collecting side is a loop vacuum which holds the transfer material 6 which has not been used for transfer downward in the shape of U in a box 45 using vacuum pressure.
  • the transfer material 6 held in the buffer device 41 on the collection side having not been used for transfer is carried toward the winding shaft 43 by rotationally driving the feed roller 42 on the collecting side.
  • the winding shaft 43 is rotationally driven only in the winding direction (counterclockwise direction) by a driving motor (not shown) and collects the transfer material 6 which has not been used for transfer by winding it.
  • the step-back roller 33 on the supplying side and the step-back roller 40 on the collecting side are repeatedly rotated forwardly or backwardly in synchronization with each other, so that the transfer material 6 is intermittently carried while the transfer material 6 is carried alternatively forwardly or backwardly. This operation will be described later.
  • the buffer device 32 on the supplying side absorbs a change of tension generated in the transfer material 6 between the feed roller 31 on the supplying side and the step-back roller 33 on the supplying side, when the transfer material 6 is carried backwardly.
  • the buffer device 41 on the collecting side absorbs a change of tension generated in the transfer material 6 between the feed roller 42 on the collecting side and the step-back roller 40 on the collecting side, when the transfer material 6 is carried backwardly.
  • the base material to be transferred 7 is carried toward the transfer part 2 from a sheet feeding device of the carrying part of the base material to be transferred (not shown) provided at a distance from the transfer apparatus 1, and the base material to be transferred 7 to which the transfer material 6 is transferred at the transfer part 2 is collected by a sheet discharge device of the carrying part of the base material to be transferred (not shown) provided at a distance from the transfer apparatus 1.
  • a printing unit is provided between the transfer apparatus 1 and the sheet feeding device of the carrying part of the base material to be transferred (not shown), the base material to be transferred 7 is carried to the transfer part 2 after having been subject to printing and the transfer is performed to the printed base material to be transferred 7.
  • a printing unit is provided between the transfer apparatus 1 and the sheet discharge device (not shown) of the carrying part of the base material to be transferred, printing is performed on the base material to be transferred 7 to which the transfer has been finished.
  • the step-back roller on the upstream side (not shown) and the step-back roller on the downstream side (not shown) are forwardly (in the direction of the arrow a) and backwardly (in the direction of the arrow b) rotated in synchronization with each other, and forwardly and backwardly carry the base material to be transferred 7, so that the position of the area of the base material to be transferred 7 where the transfer material 6 is to be transferred is adjusted.
  • the transfer material 6 is mainly composed of 4 layers of a film layer, a releasing layer, a foil layer and a glue layer, gold foil and silver foil are available as foil.
  • the transfer material 6 is not limited thereto.
  • the transfer by the transfer part 2 is performed in such manner as follows.
  • the transfer material 6 and the base material to be transferred 7 are carried to the gap between the plate cylinder 20 and the impression cylinder 21, while the glue layer of the transfer material 6 and the surface substrate of the base material to be transferred 7 are in contact and overlapped with each other, the transfer material 6 and the base material to be transferred 7 are nipped by a heated transfer face 22 of the plate cylinder 20 and the impression cylinder 21.
  • the foil of the transfer material 6 is separated by a releasing roller (not shown) provided between the transfer part 2 and the step-back roller 40 on the collecting side into an area pasted to the surface substrate of the base material to be transferred 7 and an area unpasted to the surface substrate of the base material to be transferred 7.
  • the foil in the unpasted area is carried by the step-back roller 40 on the collecting side toward the winding shaft 43 together with the film layer and the releasing layer of the transfer material 6.
  • the foil in the unpasted area is separated, only glued foil remains on the base material to be transferred 7 and the transfer is finished.
  • the transfer material 6 and the base material to be transferred 7 may be provided with frames each corresponding to a distance needed for transfer by the transfer face 22, so as to facilitate an understanding of the carrying action and the transfer operation.
  • the transfer material 6 and the base material to be transferred 7 are not provided with the frames.
  • the framed hatched area of the base material to be transferred 7 is an area where the transfer is not performed (an area used for other purpose than transfer e.g. printing), the framed blank area (herein after referred to as a blank area) is an area where the transfer is performed.
  • the area of the base material to be transferred 7 where the transfer is not performed is determined depending on a design of a product to be manufactured by the transfer apparatus.
  • the transfer face 22 performs first transfer of the transfer material 6 to the base material to be transferred 7, when the transfer face 22 is moved to the transfer position 25 at the time of first rotation of the plate cylinder 20.
  • An area used for transfer of the transfer material 6 is defined as (1), and an area of the base material to be transferred 7 to which the transfer material 6 has been transferred is defined as (A).
  • the base material to be transferred 7 is carried backwardly (in the direction of the arrow b), whereby the step back is performed.
  • the base material to be transferred 7 is backwardly carried by a prescribed distance through the gap between the non-transfer face 24 of the plate cylinder 20 and the peripheral surface of the impression cylinder 21.
  • This motion is the step back.
  • this step back includes controls of the acceleration and the deceleration of the base material to be transferred 7 while it is backwardly carried. The details of such step back control will be described later.
  • the base material to be transferred 7 is carried forwardly in synchronization with the transfer material 6.
  • the distance over which the base material to be transferred 7 is, as shown in Fig. 3D , backwardly carried (the return distance due to the step back) is determined, so that a blank area (B) of the base material to be transferred 7 is matched with the transfer position 25, when the transfer face 22 is moved to the transfer position 25 at the time of second rotation of the plate cylinder 20.
  • the blank area (B) of the base material to be transferred 7 is a blank area nearest to and on the upstream side of the area (A) of the base material to be transferred 7 in the carrying direction, to which the transfer material 6 has been transferred by the transfer face 22 at the time of first rotation of the plate cylinder 20.
  • the transfer material 6 is transferred to the blank area (B) of the base material to be transferred 7, when the transfer face 22 is moved to the transfer position 25 at the time of second rotation of the plate cylinder 20.
  • An area used for transfer of the transfer material 6 at this time is defined as (2).
  • the transfer material 6 is transferred to the blank area (C) of the base material to be transferred 7, when the transfer face 22 is moved to the transfer position 25 at the time of third rotation of the plate cylinder 20.
  • An area used for transfer of the transfer material 6 at this time is defined as (3).
  • the plate cylinder 20 is rotated 3 times, while the transfer material 6 is continuously carried in the forward direction, the transfer material 6 is transferred 3 times in succession to the base material to be transferred 7 by performing the step back of the base material to be transferred 7 for each rotation of the plate cylinder 20. This operation is performed at one cycle.
  • the return distance of the base material to be transferred 7 due to the step back is the same as previously described and determined, as shown in Fig. 3H , so that the blank area (D) of the base material to be transferred 7 is matched with the transfer position 25, when the transfer face 22 is moved to the transfer position 25 at the time of fourth rotation of the plate cylinder 20.
  • the blank area (D) of the base material to be transferred 7 is the blank area closest to and on the upstream side of the blank area (C) of the base material to be transferred 7 in the carrying direction, to which the transfer material 6 has been transferred by the transfer face 22 at the time of third rotation of the plate cylinder 6.
  • the return distance of the transfer material 6 due to the step back is determined so that an area (4) of the transfer material 6 is matched with the transfer position 25, when the transfer face 22 is moved to the transfer position 25 at the time of fourth rotation of the plate cylinder 20 (at the time of first transfer at second cycle).
  • the area (4) of the transfer material 6 is the area adjacent to and on the upstream side of the area (1) of the transfer material 6 in the carrying direction, the area (1) having been used for transfer by the transfer face 22 at the time of first rotation of the plate cylinder 20.
  • the area (4) of the transfer material 6 is transferred to the blank area (D) of the base material to be transferred 7 by the transfer face 22.
  • the transfer operation at one cycle is performed by the control part 5 as follows.
  • the control part 5 counts the number of times of rotation of the plate cylinder 20, and judges whether count number of times of rotation of the plate cylinder 20 agrees with the number of times of rotation of the plate cylinder at one cycle.
  • the transfer material 6 which is carried at the transfer speed in the forward direction is decelerated to stop, then the step back of the transfer material 6 is performed. After having been performed the step back, the transfer material 6 is accelerated up to the transfer speed and transfer at the next cycle is started.
  • the step back of the transfer material 6 is performed as follows.
  • step-back roller 33 on the supplying side and the step-back roller 40 on the collecting side are backwardly rotated in synchronization with each other to carry the transfer material 6 in the backward direction (direction of the arrow b) by the prescribed distance.
  • the rotational speed of the step-back roller on the downstream side is controlled to be faster than the rotational speed of the step-back roller on the upstream side in the carrying direction.
  • this control such condition would be maintained that sufficient tension capable of carrying the transfer material 6 always acts between the step-back roller 33 on the supplying side and the step-back roller 40 on the collecting side, so that the transfer material 6 is stably carried.
  • the step-back rollers for carrying the base material to be transferred 7 (not shown) as well may be similarly controlled.
  • tension of the transfer material 6 between the step-back roller 33 on the supplying side and the feed roller 31 on the supplying side and tension of the transfer material 6 between the step-back roller 40 on the collecting side and the feed roller 42 on the collecting side may change respectively, but such changes of tension may be absorbed by the buffer device 32 on the supplying side and the buffer device 41 on the collecting side respectively.
  • the step back of the base material to be transferred 7 is performed by controlling the step-back roller (not shown) on the upstream side and the step-back roller (not shown) on the downstream side of the carrying part of the base material to be transferred (not shown), in the same manner as that previously described with respect to the step-back roller 33 on the supplying side and the step-back roller 40 on the collecting side.
  • a distance between the transfer faces that is, an outer peripheral length of the plate cylinder 20 (a distance from a position where the transfer face starts to transfer at the time of first rotation of the plate cylinder to a subsequent position where the transfer face starts to transfer at the time of second rotation of the plate cylinder) is defined as M.
  • the outer peripheral length of the plate cylinder 20 is a length of an outer periphery of a virtual circle having a radius of distance from the rotation center of the plate cylinder 20 to the transfer face 22.
  • the number of times of rotation of the plate cylinder 20 at one cycle (the number of times of transfer at one cycle) is defined as S.
  • the number of times of rotation at one cycle S of the plate cylinder 20 is 3.
  • the distance L needed for transfer by the transfer face 22 is determined based on accuracy of the top-and-bottom size of the transfer face 22 and of the carrying action of the transfer material 6, the distance M between the transfer faces (length of the outer periphery of the plate cylinder) is determined based on the size of the plate cylinder 20, and as the available number of times of transfer N within the distance between the transfer faces can be derived from L and M, N can be also determined based on a size of the plate cylinder 20 etc..
  • N 6
  • the available number of times of transfer within the distance between the transfer faces includes the first transfer.
  • the available number of times of transfer in the unused areas is N-1.
  • the area (1) of the transfer material 6 is used for transfer by the transfer face 22 at the time of first rotation of the plate cylinder 20
  • the area (2) of the transfer material 6 is used for transfer by the transfer face 22 at the time of second rotation of the plate cylinder 20
  • the area (3) of the transfer material 6 is used for transfer by the transfer face 22 at the time of third rotation of the plate cylinder 20.
  • a distance until stopping the transfer material 6 from a state that it is forwardly carried at the transfer speed by decelerating it is defined as ⁇ .
  • a distance until the transfer material 6 reaches at the transfer speed by forwardly accelerating it from a state that it is at a stop after performing the step back is defined as ⁇ .
  • a distance over which the transfer material 6 is carried by one step back in the backward direction is defined as a return distance R1, the return distance R1 will be described in the followings.
  • the area (4) of the transfer material 6 which is used for transfer by the transfer face 22 at the time of first rotation of the plate cylinder 20 at the second cycle is an area adjacent to and on the upstream side of the area (1) of the transfer material 6 in the carrying direction, the area (1) having been used for transfer by the transfer face 22 at the time of first rotation of the plate cylinder 20 at the first cycle.
  • the area (5) of the transfer material 6 which is used for transfer by the transfer face 22 at the time of second rotation of the plate cylinder 20 at the second cycle is an area adjacent to and on the upstream side of the area (2) of the transfer material 6 in the carrying direction, the area (2) having been used for transfer by the transfer face 22 at the time of second rotation of the plate cylinder 20 at the first cycle.
  • the return distance R1 is 6L ⁇ 2+ ⁇ + ⁇ , and as ⁇ and ⁇ each have the distance of 2L, the return distance R1 is the distance of 16L. Moreover, the carrying distance R in the forward direction at one cycle is the distance of 17L.
  • the return distance R1 when the second cycle shifts from second cycle to third cycle is each the distance of 16L.
  • the area (7) of the transfer material 6 which is used for transfer by the transfer face 22 at the time of first rotation of the plate cylinder 20 at the third cycle is an area adjacent to and on the upstream side of the area (4) in the carrying direction, the area (4) having been used for transfer by the transfer face 22 at the time of first rotation of the plate cylinder 20 at the second cycle.
  • the area (8) of the transfer material 6 which is used for transfer by the transfer face 22 at the time of second rotation of the plate cylinder 20 at the third cycle is an area adjacent to and on the upstream side of the area (5) in the carrying direction, the area (5) having been used for transfer by the transfer face 22 at the time of second rotation of the plate cylinder 20 at the second cycle.
  • the area (9) of the transfer material 6 which is used for transfer by the transfer face 22 at the time of third rotation of the plate cylinder 20 at the third cycle is an area adjacent to and on the upstream side of the area (6) in the carrying direction, the area (6) having been used for transfer by the transfer face 22 at the time of third rotation of the plate cylinder 20 at the second cycle.
  • the area (11) of the transfer material 6 which is used for transfer by the transfer face 22 at the time of second rotation of the plate cylinder 20 at the fourth cycle is an area adjacent to and on the upstream side of the area (8) in the carrying direction, the area (8) having been used for transfer by the transfer face 22 at the time of second rotation of the plate cylinder 20 at the third cycle.
  • the area (12) of the transfer material 6 which is used for transfer by the transfer face 22 at the time of third rotation of the plate cylinder 20 at the fourth cycle is an area adjacent to and on the upstream side of the area (9) in the carrying direction, the area (9) having been used for transfer by the transfer face 22 at the time of third rotation of the plate cylinder 20 at the third cycle.
  • the area (14) of the transfer material 6 which is used for transfer by the transfer face 22 at the time of second rotation of the plate cylinder 20 at the fifth cycle is an area adjacent to and on the upstream side of the area (11) in the carrying direction, the area (11) having been used for transfer by the transfer face 22 at the time of second rotation of the plate cylinder 20 at the fourth cycle.
  • the area (15) of the transfer material 6 which is used for transfer by the transfer face 22 at the time of third rotation of the plate cylinder 20 at the fifth cycle is an area adjacent to and on the upstream side of the area (12) in the carrying direction, the area (12) having been used for transfer by the transfer face 22 at the time of third rotation of the plate cylinder 20 at the fourth cycle.
  • the area (17) of the transfer material 6 which is used for transfer by the transfer face 22 at the time of second rotation of the plate cylinder 20 at the sixth cycle is an area adjacent to and on the upstream side of the area (14) in the carrying direction, the area (14) having been used for transfer by the transfer face 22 at the time of second rotation of the plate cylinder 20 at the fifth cycle.
  • the transfer is performed by using the return distance R1 derived from the formula (1)
  • the area (19) to use for transfer by the transfer face 22 at the time of first rotation of the plate cylinder 20 at the seventh cycle will be an area adjacent to and on the upstream side of the area (16) in the carrying direction, the area (16) having been used for transfer by the transfer face 22 at the time of first rotation of the plate cylinder 20 at the sixth cycle, the area(16) has been already used for transfer.
  • the return distance R1 shall be the distance derived from the formula (2) and an area of the transfer material 6 used for transfer by the transfer face 22 at the time of first rotation of the plate cylinder 20 in the seventh cycle is defined as (19) adjacent to and on the upstream side of the area (18) in the carrying direction, the area (18) having been used for transfer by the transfer face 22 at the time of third rotation of the plate cylinder 20 at the sixth cycle, when the sixth cycle shifts to seventh cycle, after finishing transfer by the transfer face 22 at the time of third rotation of the plate cylinder 20 at the sixth cycle.
  • the control part 5 judges that there does not exist any area available for transfer within the used range, and determines the return distance R1 due to the step back of the transfer material 6 as the distance ( ⁇ + ⁇ ) derived from the formula (2).
  • the area (20) of the transfer material 6 to be used for transfer by the transfer face 22 at the time of second rotation of the plate cylinder 20 at the seventh cycle and the area (21) of the transfer material 6 to be used for transfer by the transfer face 22 at the time of third rotation of the plate cylinder 20 at the seventh cycle are new areas.
  • the return distance R1 shall be the distance derived from the formula (1).
  • the area (22) of the transfer material 6 to be used for transfer by the transfer face 22 at the time of first rotation of the plate cylinder 20 at the eighth cycle is an area adjacent to and on the upstream side of the area (19) in the carrying direction, the area (19) having been used for transfer by the transfer face 22 at the time of first rotation of the plate cylinder 20 at the seventh cycle.
  • the area (23) of the transfer material 6 to be used for transfer by the transfer face 22 at the time of second rotation of the plate cylinder 20 at the eighth cycle is an area adjacent to and on the upstream side of the area (20) in the carrying direction, the area (20) having been used for transfer by the transfer face 22 at the time of second rotation of the plate cylinder 20 at the seventh cycle.
  • the area (24) of the transfer material 6 to be used for transfer by the transfer face 22 at the time of third rotation of the plate cylinder 20 at the eighth cycle is an area adjacent to and on the upstream side of the area (21) in the carrying direction, the area (21) having been used for transfer by the transfer face 22 at the time of third rotation of the plate cylinder 20 at the seventh cycle.
  • the return distance R1 of the transfer material 6 due to the step back at the time of shifting of cycle shall be the distance derived from the former formula (1) until the cycle number reaches the available number of times of transfer N within the distance between the transfer faces. In the embodiment, it is the distance of 16L.
  • the transfer material 6 can be effectively used without wasting.
  • the return distance R1 can be determined as follows when N is changed by values of M, L.
  • the transfer cycle is defined as P
  • the return distance R1 due to the step back at the P-th cycle shall be the distance derived from the former formula (2) when P satisfies the following formula (3)
  • P k ⁇ N
  • the effect of inertia force acting on the transfer material 6 when being decelerated after transferring, when being accelerated before transferring and when being accelerated and decelerated during step the back can be reduced, the carrying action of the transfer material 6 can be thereby stabilized. From those, the yield can be improved.
  • Fig. 6 provides a diagraph comparably showing a carrying state of the transfer material 6 and a carrying state of the base material to be transferred 7 in the transfer apparatus 1 of the embodiment, and a carrying state of the transfer material 106 and a carrying state of the base material to be transferred 107 in the transfer apparatus developed by the inventors.
  • Fig.6 is the diagraph comparably showing carrying states of the transfer material and the base material to be transferred
  • a horizontal axis indicates the number of times of rotation of the plate cylinder
  • a vertical axis indicates normalized values of values provided by dividing carrying distances of the transfer material and the base material to be transferred with the distance L needed for transfer by the transfer face 22.
  • one scale is L. Change toward a negative direction with respect to the vertical axis indicates the carrying action in the backward direction due to the step back.
  • the carrying state of the base material to be transferred 7 in the transfer apparatus 1 of the embodiment and the carrying state of the base material to be transferred 107 in the transfer apparatus developed by the inventors are shown by the same solid line X, and it can be confirmed that the base material to be transferred 7 in the transfer apparatus 1 of the embodiment and the base material to be transferred 107 in the transfer apparatus developed by the inventors are carried in an identical manner and each position of areas where the base materials to be transferred 7,107 are transferred is controlled by performing the step back at every rotation of the plate cylinders.
  • the carrying state of the transfer material 6 in the transfer apparatus 1 of the embodiment is indicated by a broken line Y, it can be confirmed that step back is performed for each 3 times of rotation (one cycle) of the plate cylinder 20 and the position of area to be used for transfer of the transfer material 6 is controlled.
  • step back of the transfer material 106 in the transfer apparatus developed by the inventors is performed 3 times, while the step back of the transfer material 6 in the transfer apparatus 1 of the embodiment is performed once.
  • the maximum value is determined by the distance M between the transfer faces (the length of the outer periphery of the plate cylinder 20) and characteristics of the driving motor (not shown) for controlling a rotational drive of the step-back rollers 33, 40.
  • the maximum value is used as the number of times of rotation S of the plate cylinder 20 at one cycle, so that the number of times of step back of the transfer material 6 becomes the least value.
  • a control method of the transfer apparatus 1 of the embodiment will be described based on a flowchart shown in Fig.7 .
  • Step 1 S1
  • Step 2 S2 .
  • Step back of the base material to be transferred 7 is performed for each rotation of the plate cylinder 20. Step 5 (S5).
  • Step 6 (S6).
  • finishing control of transfer is a known control in which transfer is finished according to a condition designated to the control part 5 in Step 1 or a stop operation by an operator of the transfer apparatus, which is the same as in the usual transfer apparatus or printing apparatus, it is omitted from the flowchart.
  • the transfer apparatus 1 of the embodiment can reduce the number of times of step back of the transfer material 6 compared to the transfer apparatus developed by the inventors.
  • the distance L needed for transfer by the transfer face 22 is entered according to a pattern to be transferred.
  • the distance L can be set at a value between 5 mm and 355.6 mm (the maximum value of C).
  • the length C is the length of the transferred base material to be transferred 7 which is generated during one rotation of the plate cylinder 20, and the length C is longer than the distance L needed for transfer by the transfer face 22.
  • the maximum value of the number of times of rotation S at one cycle of the plate cylinder 20 is determined according to the distance M between transfer faces (the outer peripheral length of the plate cylinder 20) and the characteristics of the driving motor for controlling the rotational drive of the step-back rollers 33, 40.
  • the value S of the embodiment can be set up to 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Methods (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Decoration By Transfer Pictures (AREA)
  • Manufacturing Of Printed Wiring (AREA)
EP20201346.2A 2019-10-30 2020-10-12 Appareil de transfert et procédé de transfert correspondant Active EP3815901B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019197872A JP7055407B2 (ja) 2019-10-30 2019-10-30 転写装置及びその転写方法

Publications (2)

Publication Number Publication Date
EP3815901A1 true EP3815901A1 (fr) 2021-05-05
EP3815901B1 EP3815901B1 (fr) 2022-09-28

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EP20201346.2A Active EP3815901B1 (fr) 2019-10-30 2020-10-12 Appareil de transfert et procédé de transfert correspondant

Country Status (5)

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EP (1) EP3815901B1 (fr)
JP (1) JP7055407B2 (fr)
KR (1) KR20210052215A (fr)
CN (1) CN112743969B (fr)
AU (1) AU2020256354A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113459655B (zh) * 2021-08-14 2022-11-15 浙江圣林包装有限公司 一种塑料袋生产的双面不间断印刷设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3713666A1 (de) * 1987-04-24 1988-11-17 Armin Steuer Praege-rotationsmaschine
JPH08230152A (ja) * 1994-12-24 1996-09-10 Armin Steuer 回転式エンボス機
EP0987205A1 (fr) * 1998-09-17 2000-03-22 Armin Steuer Accumulateur à boucle pour matériau en bande et son utilisation

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3419018B2 (ja) * 1993-03-29 2003-06-23 凸版印刷株式会社 転写装置
US6277230B1 (en) * 1999-10-01 2001-08-21 Vits-America, Inc. Method and system for efficiently using media that can be stamped on a substrate
JP5450967B2 (ja) * 2007-05-31 2014-03-26 株式会社小森コーポレーション 箔転写装置
JP5401136B2 (ja) * 2009-03-19 2014-01-29 リョービ株式会社 転写装置の速度制御方法及び速度制御装置
JP5808125B2 (ja) * 2011-03-25 2015-11-10 株式会社ミヤコシ デジタル印刷方法及びその装置
JP6351068B2 (ja) * 2014-05-30 2018-07-04 サトーホールディングス株式会社 熱転写プリンタ
JP6278356B2 (ja) 2014-09-08 2018-02-14 三菱重工機械システム株式会社 紙巻防止装置及び印刷機
WO2018055645A1 (fr) * 2016-09-26 2018-03-29 Ashok Chaturvedi Appareil d'estampage à la feuille repéré et procédé pour celui-ci
CN207594548U (zh) * 2017-12-12 2018-07-10 镭德杰标识科技武汉有限公司 一种热转印打码机色带自动检测装置
JP2020199682A (ja) * 2019-06-10 2020-12-17 凸版印刷株式会社 プリンタおよび間接転写記録方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3713666A1 (de) * 1987-04-24 1988-11-17 Armin Steuer Praege-rotationsmaschine
JPH08230152A (ja) * 1994-12-24 1996-09-10 Armin Steuer 回転式エンボス機
JP3650197B2 (ja) 1994-12-24 2005-05-18 シュトイヤー アルミン 回転式エンボス機
EP0987205A1 (fr) * 1998-09-17 2000-03-22 Armin Steuer Accumulateur à boucle pour matériau en bande et son utilisation

Also Published As

Publication number Publication date
JP2021070221A (ja) 2021-05-06
KR20210052215A (ko) 2021-05-10
CN112743969B (zh) 2022-08-26
JP7055407B2 (ja) 2022-04-18
AU2020256354A1 (en) 2021-05-20
CN112743969A (zh) 2021-05-04
EP3815901B1 (fr) 2022-09-28

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