Coating device

Abstract

To provide a coating device which can suppress a change in the posture of a varnish plate in which a gripper side end is inserted to a gripper side vice.SOLUTION: A coating device comprises: a varnish cylinder 1A around which a varnish plate supplied with varnish coated on a coating object material is wound; and a varnish impression cylinder which is arranged so as to be arranged opposed to the varnish cylinder 1A to transfer the varnish of the varnish plate 11 to the coating object material. The varnish cylinder 1A comprises: a gripper side vice 15 to which a gripper side end of the varnish plate 11 is inserted to hold it in order to wind the varnish plate 11 around the peripheral surface; and a tail side vice 16 to which a tail side end of the wound varnish plate 11 is inserted to hold it. The coating device includes a plate guide 17 which can switch between the pressing position that can press the varnish plate 11 in the state where the gripper side end is inserted to the gripper side vice 15 and the non-pressing position that does not press the varnish plate.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present invention relates to a coating device for coating a coating material with varnish.

Background Art

[0002] Such a coating device includes a varnish cylinder to which varnish for coating a coating material, for example, a printed surface of a printed matter, is supplied, and a varnish pressure cylinder for conveying the printed matter and pressing the varnish of the varnish cylinder against the conveyed printed matter.

[0003] A varnish plate for coating varnish is manually attached to the varnish cylinder. When attaching the varnish plate to the varnish cylinder, the holding-side end portion of the varnish plate is manually inserted into the open holding-side vise and the holding-side vise is closed. However, if the posture of the varnish plate changes before the holding-side vise is closed after the insertion of the varnish plate, the varnish plate will be in a floating state. If the holding-side vise is closed in this state to attach the varnish plate, the varnish plate will be attached to the varnish cylinder with wrinkles. Therefore, usually, when attaching the varnish plate, it is necessary to manually press the varnish plate so as to align it with the varnish cylinder side.

[0004] In particular, in the case of a manually openable and closable holding-side vise as in Patent Document 1, since it is impossible to hold down the varnish plate by hand when closing the holding plate with respect to the vise base using a tool, the posture of the varnish plate is likely to change and the varnish plate is likely to wrinkle. Further, in the case where the holding plate is divided in the left-right direction and each is closed individually using a tool, since one of the left and right holding plates is closed first and then the other holding plate is closed, the possibility of the varnish plate wrinkling as described above is further increased.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The present invention has been made to solve the above problems, and an object thereof is to provide a coating device capable of suppressing a change in the posture of a varnish plate in which the holding-side end portion is inserted into the holding-side chuck.

Means for Solving the Problems

[0007] To achieve the above object, a coating device according to the present invention includes a varnish cylinder around which a varnish plate supplied with varnish to be coated on a material to be coated is wound, and a varnish pressure cylinder disposed opposite to the varnish cylinder for transferring the varnish of the varnish plate to the material to be coated. The varnish cylinder includes a holding-side chuck for inserting and holding the holding-side end portion of the varnish plate in order to wind the varnish plate around the circumferential surface, and a tail-side chuck for inserting and holding the tail-side end portion of the wound varnish plate. The coating device is characterized by including a plate guide that can be switched between a pressing position where the varnish plate in a state where the holding-side end portion is inserted into the holding-side chuck can be pressed and a non-pressing position where it is not pressed.

[0008] According to the above configuration, when the plate guide is in the non-pressing position, the holding-side end portion of the varnish plate is inserted into the holding-side chuck, and the inserted varnish plate is pressed by the plate guide switched from the non-pressing position to the pressing position, so that the varnish plate can be held by the holding-side chuck in a stretched state. Thereby, it is possible to suppress a change in the posture of the varnish plate inserted into the holding-side chuck until the holding-side chuck is closed and the varnish plate floats. Therefore, it is possible to suppress the varnish plate from being mounted on the varnish cylinder in a wrinkled state.

[0009] Further, the coating device according to the present invention may be provided on the inner surface side of an openable and closable cover that covers the varnish cylinder.

[0010] According to the above configuration, by providing the plate guide on the inner surface side of the openable and closable cover that covers the varnish cylinder, a special member for providing the plate guide becomes unnecessary, and the number of components can be reduced.

[0011] Further, in the coating device according to the present invention, the cover may be configured to be openable and closable by rotation, and the plate guide may be switched from the non-pressing position to the pressing position by rotating the cover from the open state to the closed state side by a predetermined angle.

[0012] According to the above configuration, by rotating the cover from the open state to the closed state side by a predetermined angle, the plate guide is switched from the non-pressing position to the pressing position, and the varnish plate can be reliably pressed by the plate guide.

[0013] Further, in the coating device according to the present invention, the plate guide may be configured to be position-changeable between an operating position close to the varnish cylinder in a state where the cover is open and a retracted position spaced apart from the varnish cylinder relative to the operating position.

[0014] According to the above configuration, in a state where the cover is open, the plate guide can be position-changed between an operating position close to the varnish cylinder and a retracted position spaced apart from the varnish cylinder relative to the operating position.

[0015] Further, the coating device according to the present invention may include a regulating member for regulating the movement of the plate guide toward the varnish cylinder side in a closed state of the cover.

[0016] According to the above configuration, since the movement of the plate guide toward the varnish cylinder side is regulated in a closed state of the cover, it is possible to avoid the plate guide moving unpredictably and contacting the varnish cylinder.

[0017] Further, in the coating device according to the present invention, the plate guide may be arranged along the inner surface of the cover in the retracted position.

[0018] According to the above configuration, if the plate guide is arranged along the inner surface of the cover at the retracted position, the arrangement space of the plate guide in the thickness direction of the cover can be reduced, and the enlargement of the coating device can be suppressed.

[0019] Further, in the coating device according to the present invention, a guiding member for guiding the varnish plate wound around the varnish cylinder may be provided on the outer surface side of the cover.

[0020] According to the above configuration, when winding the varnish plate, by guiding the varnish plate with the guiding member provided on the outer surface side of the cover, it is possible to prevent the varnish plate from contacting and being damaged by surrounding members.

Effects of the Invention

[0021] According to the present invention, there is provided a coating device capable of suppressing a change in the posture of a varnish plate by pressing the varnish plate with the plate guide having its holding-side end inserted into the holding-side chuck switched from the non-pressing position to the pressing position.

Brief Description of the Drawings

[0022]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Embodiments for Carrying Out the Invention

[0023] Hereinafter, the coating device of the present invention will be described with reference to the drawings.

[0024] FIG. 1 shows an example of a printing machine in which a coating device 1 for performing surface treatment by coating (applying) a varnish (also referred to as a resin varnish) to the printed surface of printed paper (coating material) is incorporated.

[0025] This printing machine includes a paper stacker 2, a paper feeding unit 4 for feeding printing paper P (sheet-fed paper) one by one from the paper stacker 2 to a feeder device 3, a printing unit 5 for printing on the printing paper P fed from the paper feeding unit 4, a coating device 1 for coating the printed paper printed by the printing unit 5 with varnish (ultraviolet curable resin varnish), a paper discharging unit 6 for conveying and discharging the printing paper coated with varnish by the coating device 1, and an ultraviolet drying device 7 provided in the paper discharging unit 6 for curing the varnish of the printing paper conveyed by the paper discharging unit 6. Infrared drying devices 8A and 8B are provided before and after the printing paper conveying direction of the ultraviolet drying device 7, and these infrared drying devices 8A and 8B are used when drying the aqueous varnish (aqueous varnish) coated on the printing paper. In FIG. 1, with the side of the paper stacker 2 as the front side, the side of the paper discharging unit 6 as the rear side, and the direction passing through the paper surface as the left-right direction (or width direction), the following description will be given.

[0026] The printing unit 5 includes a plurality (five colors) of printing units 5A to 5E. These printing units 5A to 5E include printing impression cylinders 5a to 5e, and transfer cylinders 9a to 9e for passing the printing paper P to the respective printing impression cylinders 5a to 5e are provided on the upstream side in the conveying direction of these printing impression cylinders 5a to 5e. Incidentally, the small-diameter transfer cylinder 9a located at the starting end side (front side) in the conveying direction among the transfer cylinders 9a to 9e is also referred to as a paper feeding cylinder, and the paper feeding unit 4 is constituted by this transfer cylinder 9a and the feeder device 3. Although not shown, each of the cylinders 5a to 5e and the transfer cylinders 9a to 9e is provided with grippers for gripping the fed printing paper P with a jaw base and a jaw at a plurality of locations (or even one location) in the circumferential direction. Incidentally, although not shown, the small-diameter transfer cylinder 9a is also provided with a gripper for gripping the printing paper with a jaw base and a jaw at one location in the circumferential direction.

[0027] The coating device 1 includes an ink cylinder 1A on which an ink plate 11 (showing the ink plate 11 before being wound around the ink cylinder 1A in FIGS. 2 and 3) to which ink is supplied is mounted, an ink supply roller 10 for supplying ink to the ink plate 11 of the ink cylinder 1A, and an ink pressure cylinder 1B disposed opposite to the lower side of the ink cylinder 1A for conveying the printed paper and transferring the ink on the ink plate 11 to the conveyed printed paper.

[0028] Further, the coating device 1 is provided with moving means (not shown) capable of switching the ink cylinder 1A between an approaching position where the ink cylinder 1A approaches the ink pressure cylinder 1B and the ink supply roller 10 to transfer ink and a separated position where the ink cylinder 1A is separated from the ink pressure cylinder 1B and the ink supply roller 10. At the separated position, in addition to performing the mounting operation of the ink plate 11 described later, maintenance of the equipment is to be performed. Incidentally, a transfer cylinder 1G (see FIG. 1) for passing the printed paper to the ink pressure cylinder 1B is provided on the upstream side (front side) in the conveying direction of the ink pressure cylinder 1B. This transfer cylinder 1G is provided with grippers for gripping the fed printed paper with a claw base and claws at a plurality of locations (or even one location) in the circumferential direction. The ink plate 11 is made of a synthetic resin having flexibility and has more flexibility than a printing plate mounted on a plate cylinder. Therefore, wrinkles are likely to occur in the ink plate 11 when the ink plate 11 is mounted on the ink cylinder 1A.

[0029] Also, as shown in FIGS. 2 and 3, the coating device 1 includes a protective cover 18 having a front side portion 18A that extends upward above the varnish cylinder 1A and a top side portion 18B that extends rearward from the upper end of the front side portion 18A, and an openable and closable metal cover 12 that covers the varnish cylinder 1A from above. The cover 12 is configured to be openable and closable by rotating around the left-right axis X1 at the rear end. Further, the cover 12 has a large number of rectangular holes 12K that are long in the left-right direction, an inclined plate portion 12A that is inclined downward toward the front end side, a vertical plate portion 12B that is bent downward from the front end of the inclined plate portion 12A, and a bent portion 12C that is bent rearward from the lower end of the vertical plate portion 12B and then bent upward. In the closed state of the cover 12, the closed state of the cover 12 is restricted by the rear end of the bent portion 12C abutting against a rubber 31 (see FIG. 3) provided on the coating device main body side. And, protrusions 13, 13 (only one side (right side) is shown in FIG. 2) that extend in the front-rear direction and protrude outward on the outer surface side are formed at both left and right ends of the inclined plate portion 12A, and the rear ends of arm portions 14, 14 (only one side (right side) is shown in FIG. 2) that extend in the front-rear direction and are fixed to the inner surfaces of these protrusions 13, 13 are pivotally supported on the machine body side of the coating device 1. By this pivotal support, the cover 12 rotates around the left-right axis X1, and in addition to when mounting the varnish plate 11, during maintenance, the cover 12 is rotated around the axis X1 and lifted upward to be in an open state in a vertical posture (see FIGS. 4 to 6), a closed state that covers the varnish cylinder 1A (see FIGS. 2 and 3), and an intermediate state that is rotated by a predetermined angle from the open state toward the closed state (see FIG. 9).

[0030] When the cover 12 is in the open state, the cover 12 approaches the front side portion 18A of the protective cover 18 located behind the cover 12, and the cover 12 is attracted to the first magnets M1, M1 (only one (right side) is shown in FIG. 2) installed on the front side portion 18A, thereby maintaining the open state of the cover 12. Further, in the intermediate state of the cover 12, as shown in FIG. 10, the push bolt 24 attached to the front left end (one end) in the front-rear direction of the inner surface of the cover 12 is engaged and disengaged with the hole 23A formed in the left side wall portion 23 of the left and right side wall portions 23, 23, thereby maintaining the intermediate state of the cover 12. Incidentally, the push bolt 24 is engaged with the hole 23B formed in the left side wall portion 23 even in the open state of the cover 12, so that the cover 12 can be prevented from moving to the closed side by detaching from the first magnets M1, M1. Incidentally, the push bolt 24 may be provided on each of the left and right sides of the cover 12.

[0031] Regarding the varnish cylinder 1A in detail, as shown in FIG. 3, in the recess 1K formed in the varnish cylinder 1A, there are provided a clamping side vise 15 for inserting and clamping the clamping side end portion of the varnish plate 11 in order to wind the varnish plate 11 around the circumferential surface, and a butt side vise 16 for inserting and clamping the butt side end portion of the wound varnish plate 11.

[0032] The clamping side vise 15 includes a vise base 15A fixed to the upstream side in the rotation direction (see FIG. 1) of the varnish cylinder 1A in the recess 1K, and a clamping plate 15B disposed opposite to the vise base 15A and capable of changing its position between a closed position where the clamping end portion of the varnish plate 11 is clamped by the vise base 15A and an open position where the insertion of the clamping end portion of the varnish plate 11 is possible. By rotating the varnish cylinder 1A by a predetermined angle while the clamping side end portion of the varnish plate 11 is clamped by the clamping side vise 15, the varnish plate 11 is wound around the varnish cylinder 1A. Incidentally, the vise base 15A and the clamping plate 15B (only the clamping plate 15B is visible in FIGS. 5 and 6) are distributed left and right and arranged in two pieces each.

[0033] On the inner surface side of the cover 12, a plate guide 17 is installed which can press backward the surface of the varnish plate 11 with its gripping end inserted into the gripping-side chuck 15 in the open position at a position spaced upward from the varnish cylinder 1A. Also, as shown in FIG. 3, the plate guide 17 can be positioned along the inner surface of the cover 12. Thereby, the protruding amount of the plate guide 17 from the cover 12 toward the varnish cylinder 1A side (downward) can be suppressed. Therefore, the arrangement space of the plate guide 17 in the thickness direction of the cover 12 can be made small, and the enlargement of the coating device 1 can be suppressed. As shown in FIG. 5, the plate guide 17 includes a rotatable roller 19 having a substantially same diameter extending in the left-right direction and a dimension longer than the width dimension of the varnish plate 11, a pair of left and right brackets 20, 20 which rotatably support the left and right ends of the roller 19 at one longitudinal end (tip end portion) and are configured to be rotatable about the left-right axis with the other longitudinal end (base end portion) as a rotation fulcrum X2 and extending in the front-rear direction (vertical direction in FIG. 5), and guide pins 21, 21 protruding outward in the left-right direction from the brackets 20, 20 at the left and right end positions of the roller 19. Therefore, in a state where the cover 12 is open, the plate guide 17 can be rotated about the rotation fulcrum X2 to change the position between a retracted position (see FIGS. 4 and 7) where the roller 19 is separated from the varnish cylinder 1A and an operating position (see FIG. 8) where the roller 19 approaches the varnish cylinder 1A. Also, the roller 19 is separated from the varnish cylinder 1A more than the axis X1 which is the rotation center of the cover 12 in the retracted position and approaches the varnish cylinder 1A more than the axis X1 in the operating position. The roller 19 constitutes a pressing member for pressing the varnish plate 11 inserted into the gripping-side chuck 15.

[0034] The plate guide 17 can be held in position on the cover 12 in either the retracted position or the operating position. That is, as shown in FIGS. 5 and 7, a metal plate 22 configured in a substantially Z shape in a side view is attached between the brackets 20, 20 of the plate guide 17. In the retracted position of the plate guide 17, a pair of left and right second magnets M2, M2 (only one is shown in FIG. 7) for magnetically attracting and holding the first portion 22A on the roller 19 side of the plate 22 are provided at the left and right ends on the opposite axis core X1 side of the inner surface of the cover 12. Also, in the operating position of the plate guide 17, a pair of left and right third magnets M3, M3 (only one is shown in FIG. 7) for magnetically attracting and holding the second portion 22B on the side separated from the roller 19 of the plate 22 are provided at the left and right ends on the axis core X1 side of the inner surface of the cover 12. The installation position of the rotation fulcrum X2 with respect to the cover 12 is set closer to the rear end than the center in the front-rear direction of the inner surface of the cover 12. By providing the plate guide 17 on the inner surface side of the cover 12, a special member for providing the plate guide 17 becomes unnecessary, and the number of parts can be reduced.

[0035] Also, on the outer surface side of the cover 12, as shown in FIG. 9, three guide members 25 for guiding the varnish plate 11 are provided when the varnish plate 11 is wound around the varnish cylinder 1A. The guide member 25 is composed of a rotatable guide roller. The guide roller 25 (guide member 25) is a roller long in the left-right direction, and is provided at intervals in the front-rear direction between the protruding portions 13, 13 formed at the left and right ends of the cover 12. Note that the number of guide rollers 25 may be other than three.

[0036] The guide pins 21, 21 provided on the plate guide 17 constitute a regulating member (first regulating member) for regulating the movement of the plate guide 17 toward the varnish cylinder 1A in cooperation with an engaged member 27 described later when the cover 12 is in the closed state.

[0037] As shown in Fig. 11, the guide pins 21, 21 engage with the engaged members 27, 27 attached to the left and right side wall portions 23, 23 (see Fig. 5) of the coating device main body in the closed state of the cover 12, thereby restricting the movement of the plate guide 17 toward the varnish cylinder 1A.

[0038] As shown in Fig. 3, each engaged member 27 includes a plate-like main body 27A disposed above the varnish cylinder 1A, and a linear groove 27M extending in the front-rear direction and formed with substantially the same width on the inner side in the left-right direction of the main body 27A. At the front end portion of the groove 27M, a guide surface 27S is provided for guiding the guide pin 21 to securely engage with the groove 27M. This guide surface 27S is configured as an inclined surface that is positioned lower toward the engagement start end side (front side). On the lower surface of each engaged member 27, a pair of left and right guide covers 28, 28 extending forward are attached. These guide covers 28, 28 function as a second restricting member to prevent the plate guide 17 from moving toward the varnish cylinder 1A and interfering when the plate guide 17 held in the retracted position by the magnetic force of the second magnets M2, M2 disengages from the second magnets M2, M2 for some reason in the closed state of the cover 12 shown in Fig. 3. The guide covers 28, 28 are configured in a substantially inverted L shape when viewed in the front-rear direction, and are provided with contact portions 28A, 28A formed so as to be positioned above the varnish cylinder 1A when viewed in the side direction.

[0039] There are a plurality of types of the varnish plates 11 having different thicknesses. When attaching the varnish plate 11 to the varnish cylinder 1A, a thickness adjustment sheet member (not shown) may be interposed between the varnish plate 11 and the varnish cylinder 1A.

[0040] The tail-side vise 16 includes a vise base 16A fixed to the downstream side in the rotation direction of the varnish cylinder 1A (see FIG. 1) within the recess 1K, and a tail-side clamping plate 16B disposed opposite to the vise base 16A and capable of changing its position between a closed position where the tail-side end of the varnish plate 11 is clamped by the vise base 16A and an open position where the insertion of the tail-side end of the varnish plate 11 is enabled. Further, the clamping tail-side vise 16 is configured to be rotatable about a horizontal axis by a rotation mechanism (not shown). By this rotation, the clamping-side end portion can be clamped by the clamping-side vise 15 and the tail-side end portion can be clamped by the tail-side vise 16, respectively, to apply tension to the varnish plate 11 wound around the varnish cylinder 1A. Note that the vise base 16A and the clamping plates 16B (only the clamping plates 16B are visible in FIGS. 5 and 6) are arranged in two each, being distributed left and right, and the clamping plates 16B can be opened and closed separately on the left and right.

[0041] As shown in FIGS. 2 and 3, at both left and right ends in the horizontal direction of the upper end portion of the front side portion 18A, there are provided a pair of left and right guide rollers 29, 29 (only the right side is visible in FIG. 2) rotatable about the left and right axes, and a rotatable clamping roller 30 configured to be swingable about a horizontal axis between a clamping position (see FIG. 7) where the varnish plate 11 is clamped by these guide rollers 29, 29 and a release position (see FIG. 3) where the clamping is released by being separated from the guide rollers 29, 29. The clamping roller 30 has a dimension longer than the full width of the varnish plate 11. On the front surface of the front side portion 18A, a plurality of strip-shaped sheets 18K (see FIG. 10) made of a material with low contact resistance with the varnish plate 11 are attached at predetermined intervals in the horizontal direction. Further, as shown in FIG. 3, the lower portion of the front side portion 18A includes an inclined portion 18a bent obliquely rearward so that the lower side is located more rearward, a vertical portion 18b extending downward from the lower end of the inclined portion 18a, a bottom portion 18c bent forward from the lower end of the vertical portion 18b, and a rising portion 18d bent upward from the front end of the bottom portion 18c. The vertical portion 18b, the bottom portion 18c, and the rising portion 18d constitute a receiving portion for receiving the lower end portion of the varnish plate 11.

[0042] Using the above configuration, the procedure for attaching the varnish plate 11 to the varnish cylinder 1A will be described.

[0043] First, temporarily place the varnish plate 11 to be attached along the front side portion 18A from the top side portion 18B of the protective cover 18 (see FIGS. 2 and 3). At this time, the lower end portion (the gripping side end portion) of the varnish plate 11 is placed in a state of being received by the receiving portion at the lower end portion of the front side portion 18A. Subsequently, rotate the cover 12 to the open state and hold it in position by the first magnets M1, M1 (see FIG. 2) (see FIGS. 4 to 6). Next, swing the clamping roller 30 to switch to the clamping position (see FIG. 7), clamp the varnish plate 11 with the guide roller 29 and the clamping roller 30, and then insert the gripping side end portion of the varnish plate 11 between the vise base 15A and the vise plate 15B of the gripping side vise 15 (see FIG. 7). Subsequently, rotate the plate guide 17 at the retracted position approximately 180 degrees around the rotation fulcrum X2 to position it at the operating position protruding downward from the cover 12 (see FIG. 8). After that, rotate the cover 12 from the open state to the intermediate state, and then engage the push bolt 24 with the hole 23A to hold the cover 12 in the intermediate state (see FIG. 9). At this time, the plate guide 17 at the non-pressing position is switched to the pressing position for pressing the varnish plate 11, and the varnish plate 11 with the butt side end disengaged from the clamping roller 30 falls toward the cover 12 side and is supported by the guide rollers 25, 25, 25 provided on the cover 12. At this pressing position, the roller 19 of the plate guide 17 presses the surface of the varnish plate 11 with the gripping side end portion inserted into the gripping side vise 15 substantially rearward above the varnish cylinder 1A, so that the varnish plate 11 can be held by the gripping side vise 15 in a stretched state. Also, the varnish plate 11 can be pressed against the outer surface of the varnish cylinder 1A near the gripping side vise 15. Thereby, it is possible to suppress a change in the posture of the varnish plate 11 inserted into the gripping side vise 15 until the gripping side vise 15 is closed, resulting in a floating state or a displaced state of the varnish plate 11. Therefore, it is possible to suppress the varnish plate 11 from being attached to the varnish cylinder 1A with wrinkles. Incidentally, in the intermediate state of the cover 12, the plate guide 17 has an inclined posture in which it is positioned lower toward the roller 19 side at the tip as shown in FIG. 9, but it may be configured to be in a horizontal posture.

[0044] Next, by manually rotating the cam 33 on one side in the left - right direction clockwise using the tool 32 shown in FIGS. 9 and 10, the holding plate 16B on one side in the left - right direction is closed to hold (clamp) one side in the left - right direction of the holding side end of the varnish plate 11. Subsequently, the cam 33 on the other side in the left - right direction is also manually rotated clockwise in the same manner to close the holding plate 16B on the other side in the left - right direction and hold (clamp) the other side in the left - right direction of the holding side end of the varnish plate 11. After clamping the holding side of the varnish plate 11, the varnish cylinder 1A is rotated clockwise by a predetermined angle so that the varnish plate 11 is wound around the varnish cylinder 1A. At the time of this winding, the guide rollers 25, 25, 25 and the roller 19 rotate while guiding the varnish plate 11, thereby suppressing the occurrence of scratches on the varnish plate 11. After winding, the end portion on the tail side of the varnish plate 11 is held and inserted between the vise base 16A of the tail - side vise 16 and the holding plate 16B. After closing the left and right tail - side vises 16, 16 using the tool 32 in the same manner as the holding - side vises 15, 15, tension is applied to the varnish plate 11 as described above, and the mounting of the varnish plate 11 is completed. After completion, the push bolt 24 is disengaged, and then the intermediate - state cover 12 is rotated downward to be in the closed state (see FIG. 11). At this time, as the cover 12 rotates downward, the guide pins 21, 21 further move to the inner side (rear side) of the grooves 27M, 27M of the engaged members 27, 27, and the engagement is continued. As a result, the cover 12 is in the closed state while the movement of the plate guide 17 toward the varnish cylinder 1A side is restricted.

[0045] In this embodiment, the cover 12 is closed while the plate guide 17 is in the operating position. However, the cover 12 may be rotated from the intermediate state to the upper open state to change the position of the plate guide 17 from the operating position to the retracted position, and then the cover 12 may be rotated to the closed state (the state of FIG. 3). In the closed state of this cover 12, the plate guide 17 is adsorbed and held by the cover 12 by the second magnets M2, M2. When the plate guide 17 is detached from the second magnets M2, M2 for some reason, the guide pins 21, 21 come into contact with the contact portions 28A, 28A of the guide covers 28, 28, thereby preventing the plate guide 17 from moving (falling) toward the varnish cylinder 1A and interfering.

[0046] Furthermore, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

[0047] In the above embodiment, the printing unit 5 including five printing units 5A to 5E is shown, but the number of printing units is not limited to five. Also, the printing unit may be omitted. Further, the paper discharge unit 6 is configured by a chain conveyance device including grippers, but a printing machine without this paper discharge unit 6 may also be used, and the specific configuration of each part constituting the printing machine is not limited to that shown in the figure. Also, although single-sheet paper is used as the printing paper, a film or continuous long paper may be used. Further, as the material to be coated, an unprinted paper or film may be used.

[0048] Also, in the above embodiment, the plate guide 17 is rotated with respect to the cover 12 to change its position between the retracted position and the operating position, but the plate guide 17 may be slid with respect to the cover 12 to change its position between the retracted position and the operating position.

[0049] Also, in the above embodiment, the plate guide 17 is provided on the cover 12, and when the plate guide 17 is positioned at the operating position and the cover 12 is in an intermediate state, the plate guide 17 is switched from the non-pressing position where the varnish plate 11 is not pressed to the pressing position where the varnish plate 11 is pressed. However, a configuration may be adopted in which a plate guide is provided on a fixing member other than the cover, and the plate guide can be switched from the non-pressing position where the varnish plate 11 is not pressed to the pressing position where the varnish plate 11 is pressed only by positioning the plate guide from the retracted position to the operating position.

[0050] Also, in the above embodiment, the roller 19 and the guide roller 25 are constituted by a single rotating body extending in the left-right direction with the same diameter, but a single rotating body having a plurality of large-diameter portions may be used, or a configuration in which a plurality of independent rotating bodies (rollers or spheres) are provided at intervals in the left-right direction may also be used.

[0051] In the above-described embodiment, the pressing member is constituted by the rotatable roller 19, and the guiding member is constituted by the rotatable guide roller 25. However, the pressing member and the guiding member may be constituted by non-rotating members. In this case, for example, it is preferable that the member that contacts the varnish plate 11 is constituted by a soft material (e.g., rubber, synthetic resin, non-woven fabric, etc.) or a brush.

[0052] In the above-described embodiment, two clamping bases 15A and 16A and two clamping plates 15B and 16B are provided on the left and right, respectively. However, any number of three or more may be provided, or only one may be provided.

Explanation of Reference Numerals

[0053] 1... Coating device, 1A... Varnish cylinder, 1B... Varnish pressure cylinder, 1G... Transfer cylinder, 1K... Recess, 2... Stacking table, 3... Feeder device, 4... Feeding section, 5... Printing section, 5A - 5E... Printing units, 5a - 5e... Printing pressure cylinders, 6... Discharging section, 7... Ultraviolet drying device, 8A, 8B... Infrared drying devices, 9a - 9e... Transfer cylinders, 10... Varnish supply roller, 11... Varnish plate, 12... Cover, 12A... Inclined plate section, 12B... Vertical plate section, 12C... Bent section, 12K... Hole, 13... Protrusion, 14... Arm section, 15... Clamping side vice, 15A... Vice base, 15B... Clamping plate, 16... Rear side vice, 16A... Vice base, 16B... Clamping plate, 17... Plate guide, 18... Protective cover, 18A... Front side section, 18B... Top side section, 18K... Band-shaped sheet, 18a... Inclined section, 18b... Vertical section, 18c... Bottom section, 18d... Upright section, 19... Roller (pressing member), 20... Bracket, 21... Guide pin, 22... Plate material, 23... Side wall section, 23A, 23B... Holes, 24... Push bolt, 25... Guide roller (guiding member), 27... Engaged member, 27A... Body, 27M... Groove, 27S... Guide surface, 28... Guide cover, 28A... Contact section, 29... Guide roller, 30... Clamping roller, 31... Rubber, 32... Tool, 33... Cam, P... Printing paper, X1... Axis center, X2... Rotation fulcrum

Claims

1. The apparatus includes a varnishing cylinder around which a varnishing plate is wound to supply varnish to be applied to a material to be coated, and a varnishing impression cylinder disposed opposite the varnishing cylinder to transfer the varnish from the varnishing plate to the material to be coated, The varnishing cylinder is provided with a leading edge vice into which a leading edge end of the varnishing plate is inserted and clamped in order to wrap the varnishing plate around its circumferential surface, and a trailing edge vice into which a trailing edge of the wrapped varnishing plate is inserted and clamped, This coating device is characterized by being equipped with a plate guide that can be switched between a pressing position where it can press the surface of the varnish plate at a position spaced above the varnish cylinder when the gripping side end, which is the lower end, is inserted into the gripping side vice from above, and a non-pressing position where it does not press the surface.

2. The coating apparatus according to claim 1 , wherein the plate guide curves the varnish plate by switching from the non-pressing position to the pressing position.

3. 3. The coating apparatus according to claim 1, wherein the plate guide is disposed so as to be movable relative to an openable cover which covers the varnishing cylinder.

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