JP6298319B2 - Plate supply / discharge device - Google Patents

Description

  The present invention relates to a plate supply / discharge device that supplies a printing plate to a plate cylinder of a printing unit and discharges the printing plate from the plate cylinder.

  In general, a box making machine includes, in order from the upstream side, a paper feeding unit, a plate feeding / discharging device, a printing unit, a slotter unit, a die cutter, a gluer, a folder, and a counter unit. Examples of the sheet-like workpiece to be processed by the box making machine include a corrugated cardboard sheet and cardboard, and a composite material of these with a resin, a metal, and the like. A typical one is a corrugated cardboard sheet. The printing unit prints the sheet-like workpiece, and the printing plate is wound around the plate cylinder of the printing unit. The printing plate is fed and discharged by a printing plate feeding / discharging device.

  As the printing plate, a printing plate is fixed to one surface of a plastic sheet, a front end side locking bar is arranged on a front end side of the plastic sheet, and a rear end side engagement is provided on a rear end side of the plastic sheet. Those with stop bars are generally used.

  As a technique for winding the printing plate around the plate cylinder of the printing unit, Patent Literature 1 and Patent Literature 2 are publicly known. As a technique for unwinding the printing plate from the plate cylinder of the printing unit, Patent Document 2 is publicly known.

  In Patent Document 1, a locking bar provided at an opening end of a printing plate by closing and closing the locking lid is provided with a retaining piece provided at an opening and closing end of the locking lid. There is a retaining groove on the outer periphery that holds the retaining state in the outer periphery, and the plate clamping shaft is incorporated in the receiving groove provided in the vicinity of the retaining groove, and the end side of the printing plate on the outer periphery of the plate clamping shaft A plate cylinder in which an engagement groove of a locking bar provided in the portion is formed, and a hanging member that detachably holds the locking bar at the bottom end of the printing plate. A plate feeding device that feeds the plate supported by hanging toward the outer circumferential side of the plate cylinder by lowering the hanging member, and the plate plate that is disposed on the outer circumferential side of the plate cylinder when the printing plate is fed by the plate feeding device. A lid opening device that makes the locking lid in an inclined open state, and can be moved forward and backward toward the outer peripheral side of the plate cylinder, and is opened during forward movement. A guide plate that extends upward from the upper end of the retaining piece of the locking lid and guides the locking bar at the holding side end of the fed printing plate onto the open / close end of the locking lid; and the locking groove Rotation that the locking bar is prevented from being pulled out, and when the printing plate is wound by the rotation of the plate cylinder, it moves forward toward one side of the outer periphery of the plate cylinder and presses the bottom end of the printing plate against the outer periphery of the plate cylinder. A plate press roller that can move forward and backward with the guide plate, and presses the bottom end of the printing plate wound around the outer periphery of the plate cylinder when moving forward, against the outer periphery of the plate cylinder, and the plate cylinder winds the printing plate in the pressed state. A printing plate mounting device is described which comprises a bar pushing member which is rotated in the direction opposite to the direction and pushes the locking bar into the engaging groove when the locking bar faces the engaging groove of the plate clamping shaft. .

  In Patent Document 2, a locking bar provided at the holding side end of the printing plate by closing and closing the locking lid is provided with a retaining piece provided at the opening and closing end of the locking lid. There is a retaining groove on the outer periphery that holds the retaining state in the outer periphery, and the plate clamping shaft is incorporated in the receiving groove provided in the vicinity of the retaining groove, and the end side of the printing plate on the outer periphery of the plate clamping shaft A plate cylinder in which an engagement groove of a locking bar provided in the portion is formed, and a hanging member that detachably holds the locking bar at the bottom end of the printing plate. A plate feeding device that feeds the plate supported by hanging toward the outer circumferential side of the plate cylinder by lowering the hanging member, and the plate plate that is disposed on the outer circumferential side of the plate cylinder when the printing plate is fed by the plate feeding device. A lid opening device that makes the locking lid in an inclined open state, and can be moved forward and backward toward the outer peripheral side of the plate cylinder, and is opened during forward movement. A guide plate that extends upward from the upper end of the retaining piece of the latching lid and guides the latching bar at the end on the gripper side of the fed plate to the open / close end of the latching lid, together with the guide plate The end of the printing plate wound around the outer periphery of the printing drum during advancement is pressed against the outer periphery of the printing drum, and in this pressed state, the printing drum is rotated in the direction opposite to the winding direction of the printing plate, and the locking bar Is opposed to the engagement groove of the plate clamping shaft, and is moved up and down at a position upstream of the hoistway of the suspension member so as to push the locking bar into the engagement groove. It has a holding member that receives and holds the butt end of the printing plate that falls to the outside from one side of the outer periphery of the plate cylinder in a descending stop state arranged on the side, and the butt end is held by the holding member A plate removing device that lifts the printed plate upward by the upward movement of the holding member. Exchange device is described.

Japanese Patent No. 4651655 Japanese Patent No. 4651656

  However, the known devices described in Patent Document 1 and Patent Document 2 have insufficient automation. That is, conventionally, when the printing plate is wound around the plate cylinder and the front end side of the printing plate is warped, it does not fit in the locking groove of the locking lid when the locking lid of the plate cylinder is opened. In some cases, the distal end side locking bar cannot be retracted. As for the warpage of the printing plate, both warpage to the upstream side and warpage to the downstream side occur. This is considered to be largely affected by the state of the plastic sheet and the printing plate and their adhesion state.

  Accordingly, in view of the above-described problems of the prior art, the object of the present invention is to provide the front-end-side locking bar when the front-end side of the printing plate is warped, even when the front-end side of the plate cylinder is opened. It is an object of the present invention to provide a novel printing plate supply / discharge device having a configuration in which a machine automatically and stably performs an operation of guiding so as to be surely received in a locking groove of the locking lid.

  The printing plate feeding / discharging device of the present invention is for tightening a plate with a locking lid formed with a locking groove for anchoring the front-end side locking bar of the printing plate and the rear-end side locking bar of the printing plate. A plate cylinder on which a plate clamping shaft in which an engagement groove is formed is disposed, a first plate feeding guide plate, a plate feeding guide unit in which a second plate feeding guide plate and a push bar are disposed, A printing plate pressing roller, a plate feeding device, and a plate discharging device, and the first plate feeding guide plate and the second plate for guiding the front end side locking bar to the locking groove in a plate feeding operation. The plate supply guide plates are arranged to face each other. When the plate supply device that suspends the printing plate is lowered to a predetermined position and the locking lid is opened, the first plate supply guide plate is When the second plate supply guide plate approaches the front end side of the printing plate and the second plate supply guide plate approaches the front end side of the printing plate, the front end side locking bar is moved. The characterized in that it induces the position directly above the locking groove.

  According to the present invention, when the plate supplying apparatus that suspends the printing plate in a plate supplying operation is lowered to a predetermined position and the locking lid is opened, the first plate supplying guide plate is moved to the front end of the printing plate. Since the leading end side locking bar is guided to a position directly above the locking groove by the movement of the second plate feeding guide plate approaching the leading end side of the printing plate, the warpage is caused. It is possible to reliably guide the predetermined printing plate to a predetermined position.

  In the present invention, the plate supply guide unit is provided with a third plate supply guide plate in addition to the second plate supply guide plate, and the plate supply device that suspends the printing plate is in a predetermined position. When the locking lid is opened and the plate supply guide unit approaches the locking lid, the second plate supply guide plate and the third plate supply guide plate are moved to the front end of the printing plate. Approaching the side, the plate feeder further descends, the leading end side locking bar fits in the locking groove, and then the third plate feeding guide plate pushes the leading end side locking bar into the locking groove. And the third plate feeding guide plate closes the locking lid and stores the leading edge side locking bar in a state where the third plate feeding guide plate pushes the leading edge side locking bar into the locking groove. And

According to the present invention, the third plate supply guide plate pushes the front end side locking bar into the inner wall of the locking groove, and the third plate supply guide plate engages the front end side locking bar with the engagement. Since the locking lid closes and retracts the leading edge side locking bar while being pushed into the retaining groove, the leading edge side locking bar is securely guided to the predetermined position even with respect to the warped printing plate. The machine automatically performs the operation of storing in the machine in a stable and accurate manner.
Here, the plate-feeding device is lowered either when the plate-feeding device as a whole is lowered or when the component part of the plate-feeding device relating to the storage of the front end side locking bar is lowered. Point to both. Similarly, the plate-feeding device rises either when the plate-feeding device as a whole rises or when the component part of the plate-feeding device related to storage of the front end side locking bar rises. Point to both.

The present invention, the first feed guide plate, the movable plate is coupled rotatably on the support portion, and guiding the distal end side locking bar by the movable plate rotates, When the distal-side locking bar the plate feeder is further lowered fits into the locking groove, the movable plate, characterized in that the return to the original position by turning.

According to the present invention, the operation of the first plate supply guide plate can be minimized and a rational apparatus configuration can be obtained.
Here, the upstream direction is the direction in which the sheet-like workpiece to be processed by the box making machine approaches, and the downstream direction is the direction in which the sheet-like workpiece moves away. When the printing plate feeding / discharging device of the present invention is used as a reference, a paper feeding unit is disposed upstream, and a slotter unit and a die cutter are disposed downstream.

In the present invention, the third plate supply guide plate moves downward from the second plate supply guide plate from a state where it is built in the second plate supply guide plate, so that the front end side locking is achieved. push the bar with the locking groove, the engagement when the locking lid to store the distal-side locking bar closed, original position the third feed guide plate with the plate feeding guide unit moves moves It is characterized by returning to.

  According to the present invention, the operation of the third plate supply guide plate can be minimized and a rational apparatus configuration can be obtained.

  According to the printing plate supply / discharge device of the present invention, the machine automatically and stably performs the operation of reliably guiding the warped printing plate to a predetermined position and securely storing the leading end side locking bar. The configuration is as follows. According to the present invention, the operation of the first plate supply guide plate and the operation of the third plate supply guide plate can be minimized, and a rational apparatus configuration is obtained.

It is the principal part side view which looked at the printing plate supply / discharge device of the embodiment to which the present invention is applied from the operator side (OP side). It is a side view of the plate supply / discharge device of the embodiment. It is a front view of the printing plate supply / discharge device of the embodiment. It is a rear view of the printing plate supply / discharge device of the embodiment. It is a figure which shows the driving | running state of the box making machine provided with the printing plate supply / discharge device of the said embodiment. It is a figure which shows the plate supply start state of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the plate rear end holding | grip state of the plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate front-end | tip guidance state of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate front-end | tip contact state of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate storage preparation state of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate front-end | tip storage state of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate winding start state of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate rear end open state of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate winding state of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate fixation preparation state 1 of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate fixation preparation state 2 of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate fixation preparation state 3 of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate winding completion state of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the driving | running preparation state of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the plate release start state of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate rear end detachment preparation state 1 of the printing plate supply / discharge device of the embodiment. It is a figure which shows the printing plate rear end detachment preparation state 2 of the printing plate supply / discharge device of the embodiment. It is a figure which shows the printing plate rear end detachment | leave state 1 of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate rear end detachment | leave state 2 of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate rear end clamping state of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate drawing start state of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the printing plate front-end | tip detached state of the printing plate supply / discharge device of the said embodiment. It is a figure which shows the plate completion state of the printing plate supply / discharge device of the said embodiment.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings.

(Embodiment of the present invention)
FIG. 1 is a side view of a main part of a printing plate supply / discharge device according to an embodiment to which the present invention is applied as viewed from the OP side (operation side). FIG. 2 is a side view of the printing plate supply / discharge device of the present embodiment. FIG. 3 is a front view of the printing plate supply / discharge device of the present embodiment. FIG. 4 is a rear view of the printing plate supply / discharge device of the present embodiment. In side views such as FIGS. 1 and 2, the right side of the figure is the upstream side, and the left side of the figure is the downstream side. The rotation directions of the plate cylinder 5 and the plate presser roller 91 are the clockwise direction in the figure and the counterclockwise direction in the figure. 1, 2, and 5 to 28 are all side views.

  The printing plate 26 has a printing plate fixed to one side of a plastic sheet, a front end side locking bar 27 is disposed on the front end side of the plastic sheet, and a rear end side engagement on the rear end side of the plastic sheet. The one provided with the stop bar 28 is used.

  The printing plate supply / discharge device 1 of the present embodiment is as shown in FIGS. Reference numeral 30 denotes a main body frame. Reference numeral 202 denotes a sheet conveying surface. Reference numeral 203 denotes a sheet, particularly a cardboard sheet. Reference numeral 204 denotes an impression cylinder. Reference numeral 5 denotes a plate cylinder having a fixed position stop function. Reference numeral 206 denotes an ink roller. The plate cylinder 5 includes a locking lid 7 that opens and closes and a plate clamping shaft 8 that rotates. The locking lid 7 is formed with a locking groove 71 for anchoring the front end side locking bar 27. When the locking groove 71 is outside the plate cylinder 5, the front end side locking bar 27 is opened. When the locking groove 71 is located inside the plate cylinder 5, the leading end side locking bar 27 is anchored. The plate clamping shaft 8 has a fixed position stop function. An engagement groove 81 is formed in the plate clamping shaft 8 to wind the rear end side locking bar 28 and clamp the plate. When the plate clamping shaft 8 rotates in the forward direction, the rear end side locking bar 28 is moved. When the plate clamping shaft 8 rotates in the reverse direction, the rear end side locking bar 28 is unwound and released.

  As shown in FIGS. 5 to 28, the main body frame 30 includes a first plate supply guide plate 10. A movable plate 11 is rotatably connected to the first plate supply guide plate 10 on a support portion 12.

  As shown in FIGS. 5 to 28, the main body frame 30 includes a plate supply guide unit 13. The plate supply guide unit 13 is provided with a second plate supply guide plate 14, a third plate supply guide plate 15, and a pushing bar 16, and the second plate supply guide plate 14 moves back and forth. 3 plate feed guide plate 15 is moved back and forth, and push bar 16 is moved back and forth. Here, the back and forth motion refers to an operation of moving from the upstream side to the downstream side and moving from the downstream side to the upstream side. The main body frame 30 includes a plate pressing roller 91 that rotates following the plate cylinder 5.

  As shown in FIGS. 3 to 4, the main body frame 30 has a gate shape, and includes a plate supply device 50 for hanging the printing plate 26 and a plate discharging device 100 for lifting the printing plate 26. . The main body frame 30 has a pair of side portions 30a and a lower piece 30b. On the upstream side of the plate supply device 50, a plate removal device 100 is arranged. The plate feeding device 50 has a fixed position stop function in the horizontal direction and the vertical direction. Reference numeral 51 denotes a plate feeding suspending machine. The plate supply suspending machine 51 is provided with a plate supply suspending lid 53 that opens and closes. A plate groove 26 is formed in a holding groove 54 formed between the plate supply suspending lid 53 and the support portion 52 when the plate supply suspending lid 53 is closed. The front end side locking bar 27 is hooked and hung (FIG. 1). A plate feeding suction device 59 is provided below the plate feeding device 50. The plate removal apparatus 100 has a fixed position stop function in the horizontal direction and the vertical direction. Reference numeral 121 denotes a discharged plate lifting machine. The plate lifting machine 121 is provided with a plate lifting lid 123 that opens and closes, and a retaining groove 124 formed between the plate lifting plate 123 and the support portion 122 when the plate lifting lid 123 is closed is engaged with the rear end side of the printing plate 26. The bar 28 is hooked and lifted (FIG. 1). The plate removal apparatus 100 includes a plate removal adsorber 129. On the lower side of the plate discharging apparatus 100, there is a plate discharging guide portion 140 in which a plate discharging guide groove 141 is formed (FIG. 1).

  FIG. 5 is a diagram showing an operating state of the box making machine provided with the printing plate supply / discharge device 1 of the present embodiment, and shows a state when the sheet 203 is printed. As shown in FIG. 5, the printing plate 26 is wound around the plate cylinder 5 and is in close contact therewith. The first plate supply guide plate 10, the plate supply guide unit 13, and the printing plate pressing roller 91 are in their standby positions. As shown in FIG. 5, the ink roller 206 and the plate cylinder 5 rotate to supply ink from the ink roller 206 to the plate cylinder 5, and the plate cylinder 5 and the impression cylinder 204 rotate to rotate the sheet 203 on the sheet conveying surface 202. Is sent out from the upstream side to the downstream side.

(Plate work)
6-19 is a figure which shows the plate feeding operation | movement procedure of the printing plate feeding / discharging apparatus 1 of this embodiment.

  FIG. 6 is a diagram showing a plate feeding start state of the plate feeding / discharging device 1 of the present embodiment. As shown in FIG. 6, the first plate supply guide plate 10 and the second plate supply guide plate 14 are arranged to face each other in order to guide the leading end side locking bar 27 to the locking groove 71 in the plate supply operation. It has become the composition. The first plate supply guide plate 10 is on the downstream side (on the left side in FIG. 6), and the second plate supply guide plate 14 is The upstream side (the right side in FIG. 6). The distance between the first plate supply guide plate 10 and the second plate supply guide plate 14 is narrower from the top to the bottom. Thus, the arrangement configuration is such that the front end side locking bar 27 is easily guided to the locking groove 71.

  As shown in FIGS. 5 to 19, in the first plate supply guide plate 10, the movable plate 11 is rotatably connected to the support portion 12, and the movable plate 11 rotates in the upstream direction. When the leading end side locking bar 27 is guided and the leading end side locking bar 27 is received in the locking groove 71, the movable plate 11 is rotated in the downstream direction to return to the original position.

  As shown in FIGS. 5 to 19, the plate supply guide unit 13 is provided with a third plate supply guide plate 15 in addition to the second plate supply guide plate 14. By approaching the stop cover 7, the second plate supply guide plate 14 and the third plate supply guide plate 15 approach the front end side of the printing plate 26, the lock cover 7 is closed, and the front end side locking bar 27 is moved. When stored, the plate feeding guide unit 13 moves in the upstream direction and the third plate feeding guide plate 15 moves in the upstream direction to return to the original position, and the second plate feeding guide plate 14 is moved to the third plate feeding. The guide plate 15 is built in. In this built-in state, the exposed surface on the downstream side of the second plate supply guide plate 14 and the exposed surface on the downstream side of the third plate supply guide plate 15 are flush with each other. As a result, when the third plate supply guide plate 15 is built in the second plate supply guide plate 14, there is no unevenness on the exposed surface on the downstream side. It is easy to guide to the groove 71.

  In the example shown in FIG. 4, three third plate supply guide plates 15 are arranged at a predetermined interval and are built in the second plate supply guide plate 14. This is because it is easy to ensure the strength of the second plate supply guide plate 14 by dividing the third plate supply guide plate 15.

  In the example shown in FIG. 6, first, the plate cylinder 5 is raised to a predetermined position and temporarily stops. This is to prevent the printing plate 26 from coming into contact with the conveying surface 202 and being damaged when the printing plate 26 is wound around the plate cylinder 5. On the other hand, since the plate supply hanging lid 53 of the plate supply device 50 is closed, the rear end side locking bar 28 of the printing plate 26 is horizontally placed in the holding groove 54 of the plate supply hanging lid 53 from the OP side by manual work or the like. The plate feeding suction device 59 is actuated to actuate the plate 26 by air suction, and the plate feeding device 50 is moved horizontally to the plate feeding position (FIG. 6).

  Then, as shown in FIG. 7, the plate feeding device 50 is lowered to a predetermined position and stopped in a state where the printing plate 26 is suspended.

  Next, as shown in FIG. 8, the locking lid 7 is opened, the locking groove 71 is opened, and the distal end side locking bar 27 is opened by rotating the movable plate 11 in the upstream direction. To the position directly above the locking groove 71 at the time. As an order at this time, the movable plate 11 may be rotated in the upstream direction after the locking groove 71 is opened, or the locking groove 71 is opened after the movable plate 11 is rotated in the upstream direction. Alternatively, the operation of opening the locking groove 71 and the operation of rotating the movable plate 11 in the upstream direction may be performed simultaneously. In the example shown in FIG. 8 and the like, the movable plate 11 is shaped like a dogleg bent downstream in a side view in order to guide the printing plate 26. The movable plate 11 may have a dogleg shape, an L shape, a round shape, or a straight shape. As the rotating means for rotating the movable plate 11, known driving means such as an air cylinder and an electric motor are applied.

  Next, as shown in FIG. 9, the plate supply guide unit 13 approaches the plate cylinder 5 and contacts the locking lid 7. When the plate feeding device 50 is further lowered and stopped at a fixed position, the leading end side locking bar 27 is accommodated in the locking groove 71. For example, the front end side locking bar 27 comes into contact with the lower surface of the locking groove 71 and the plate feeding device 50 stops. On the other hand, the movable plate 11 rotates in the downstream direction and returns to the original position.

  Next, as shown in FIG. 10, the third plate supply guide plate 15 is moved to the second plate supply guide plate 15 with the plate supply guide unit 13 approaching the plate cylinder 5 and in contact with the locking lid 7. 14, the distal end side locking bar 27 is pushed to the back of the locking groove 71. For example, the third plate supply guide plate 15 presses the front end side locking bar 27 against the back wall of the locking groove 71.

  And as shown in FIG. 11, the latching lid 7 closes and the front end side latching bar 27 is stored. Until the front end side locking bar 27 is retracted, the third plate feeding guide plate 15 moves in the downstream direction and the operation of pushing the front end side locking bar 27 into the locking groove 71 is performed. Further, the state where the plate feeding guide unit 13 approaches the plate cylinder 5 and is in contact with the locking lid 7 is maintained until the front end side locking bar 27 is stored.

  Next, as shown in FIGS. 12 to 14, the printing plate 26 is wound around the plate cylinder 5 in a tension state. As shown in FIG. 12, the plate cylinder 5 is rotated in the forward direction while the plate feeder 50 is lowered, and the printing plate 26 starts to be wound around the plate cylinder 5 in a tensioned state. On the other hand, the plate feeding guide unit 13 moves upstream and the third plate feeding guide plate 15 moves upstream and is built in the second plate feeding guide plate 14. Return to position. Then, as shown in FIG. 13, the printing plate pressing roller 91 moves downstream and comes into contact with the printing plate 26 of the plate cylinder 5. In the example shown in FIG. 13, the plate cylinder 5 is temporarily stopped during winding in a state in which the plate pressing roller 91 is in contact with the plate 26 of the plate cylinder 5, and the plate feeding device 50 is engaged with the rear end side during the winding. The stop bar 28 is opened. Then, as shown in FIG. 14, the plate feeding device 50 is raised and moved back horizontally to the initial position where the printing plate 26 is inserted. Next, the plate cylinder 5 is rotated in the forward direction and the plate pressing roller 91 is driven to rotate, so that the printing plate 26 is wound around the plate cylinder 5 in a tensioned state. The plate cylinder 5 does not need to be temporarily stopped if the timing for opening the rear end side locking bar 28 is appropriate.

  Next, as shown in FIG. 15, the plate cylinder 5 is temporarily stopped at a position where the rear end side locking bar 28 faces the plate pressing bar 12. Then, as shown in FIG. 16, the plate supply guide unit 13 approaches the plate cylinder 5 and blocks the upper side of the rear end side locking bar 28, and the plate pressing bar 12 contacts the rear end side locking bar 28. . Next, as shown in FIG. 17, the plate cylinder 5 is rotated in the reverse direction and the engagement groove 81 of the plate clamping shaft 8 stops at a position facing the rear end side locking bar 28, and the printing plate is pushed in. The bar 12 pushes the rear end side locking bar 28 into the engaging groove 81. Then, the plate clamping shaft 8 is rotated by a predetermined amount in the reverse direction, and the rear end side locking bar 28 is wound to bring the printing plate 26 into close contact with the plate cylinder 5 (FIG. 18).

  Then, as shown in FIG. 19, the plate supply guide unit 13 and the plate pressing roller 91 are retracted to the standby position, and the plate cylinder 5 is lowered to return to the operation position.

(Discarding work)
20 to 28 are diagrams illustrating a plate discharging operation procedure of the printing plate supply / discharge device 1 of the present embodiment.

  FIG. 20 is a diagram illustrating a plate discharge start state of the plate supply / discharge device 1 of the present embodiment. In the example shown in FIG. 20, first, the plate cylinder 5 is raised to a predetermined position and temporarily stops. This is to prevent the printing plate 26 from coming into contact with the conveying surface 202 and being damaged when the printing plate 26 is wound around the plate cylinder 5. Next, the plate removal apparatus 100 moves horizontally to the plate removal position and descends to a predetermined position. Next, as shown in FIG. 21, the discharged plate lifting machine 121 is lowered, and the discharged plate guide roller 126 comes into contact with the copying surface of the discharged plate guide groove 141 of the discharged plate guide portion 140. Then, as shown in FIG. 22, the lowermost plate discharging guide roller 126 reaches the end of the plate discharging guide groove 141, the plate discharging lifting cover 123 is opened, and the plate discharging press roller 128 protrudes to contact the printing plate 26 of the plate cylinder 5. Touch the plate 26 in contact.

Next, as shown in FIGS. 23 to 27, the printing plate 26 is unwound from the plate cylinder 5. First, as shown in FIG. 23, the plate clamping shaft 8 rotates by a predetermined amount in the forward direction, and the rear end side locking bar 28 is detached from the engagement groove 81. Next, as shown in FIG. 24, the plate cylinder 5 rotates by a predetermined amount in the reverse direction to eliminate the catch of the rear end side locking bar 28 on the plate cylinder 5, and then the plate cylinder 5 is positioned in the forward direction. After a fixed amount of rotation, the rear end side locking bar 28 enters between the discharged plate lifting cover 123 and the support portion 122. Then, as shown in FIG. 25, the discharged plate lifting cover 123 is closed and the rear end side locking bar 28 is pinched. In other words, the plate discharging apparatus 100 stores the rear end side locking bar 28.

  Next, as shown in FIG. 26, the plate cylinder 5 is rotated in the reverse direction while the plate lifting machine 121 is lifted, and the range from the intermediate portion to the tip of the plate 26 and the plate cylinder 5 are in tension. Unwind the plate cylinder 5 gradually. Then, as shown in FIG. 27, the plate cylinder 5 rotates in the reverse direction while the plate lifting machine 121 is further lifted, and the plate cylinder 5 is located at a predetermined position where the locking lid 7 faces the plate pressing bar 12. Stops. Then, the locking lid 7 is opened and the distal end side locking bar 28 is detached from the locking groove 71. Next, as shown in FIG. 28, the locking lid 7 is closed. Then, the plate discharger 129 is operated to air-suck the printing plate 26, and the plate release apparatus 100 is moved horizontally to the initial position (see FIG. 1). Then, the operation of the discharged plate adsorption machine 129 is stopped to release the air adsorption of the printing plate 26, and the printing plate 26 is removed from the discharged plate adsorption machine 129 by manual work or the like. Eventually, the plate cylinder 5 descends and returns to the operating position (see FIG. 19).

  As described above, the present invention is not limited to the embodiment described above. In the above-described embodiment, the rear end side locking bar 28 of the printing plate 26 is manually inserted into the holding groove 54 of the plate feeding suspension lid 53 and hooked, and the plate feeding suction device 59 is operated to remove the printing plate 26. Although it has been described that the plate-feeding device 50 is horizontally moved to the plate-plate feeding position by air adsorption, it is also possible to automate the operation of hanging the plate 26 to the plate-feeding device 50. Similarly, it is possible to automate the operation of removing the printing plate 26 from the discharged-plate adsorption machine 129. Thus, it goes without saying that the present invention can be modified as appropriate without departing from the spirit of the present invention.

1 Plate supply / discharge device of the present invention,
5 plate cylinder,
7 Locking lid, 71 Locking groove,
8 plate clamping shaft, 81 engagement groove,
10 First feed plate,
11 Movable plate,
12 support part,
13 Feeding guide unit,
14 Second plate guide plate,
15 Third plate guide plate,
16 Push bar,
26 printing plate, 27 front end side locking bar, 28 rear end side locking bar,
30 body frame,
50 plate feeder,
51 Plate Feed Suspension Machine, 52 Support Unit 53 Plate Feed Suspension Cover, 54 Holding Groove,
59 Plate adsorber,
91 printing plate pressing roller,
100 plate removal device,
121 waste plate lifting machine, 122 support part 123 waste plate lifting lid, 124 holding groove,
126 Displacement guide roller,
128 Displacement presser roller,
129 Discharge plate adsorption machine,
140 Displacement guide section,
141 Discharge plate guide groove,
202 sheet conveying surface, 203 sheet,
204 impression cylinder,
206 Ink roller

Claims (4)

  A locking lid formed with a locking groove for anchoring the front end side locking bar of the printing plate and a plate clamping shaft formed with an engagement groove for winding the plate end side locking bar around the printing plate A plate cylinder, a first plate supply guide plate, a plate supply guide unit in which a second plate supply guide plate and a push bar are arranged, a plate press roller, and a plate supply device, The first plate supply guide plate and the second plate supply guide plate are arranged to face each other in order to guide the leading end side locking bar to the locking groove in a plate feeding operation. When the plate feeding device that suspends the printing plate is lowered to a predetermined position and the locking lid is opened, the first plate feeding guide plate approaches the front end side of the printing plate, In addition, when the second plate supply guide plate approaches the front end side of the printing plate, the front end side locking bar is moved to a position directly above the locking groove. Plate supply and discharge device, characterized in that the induced.   The plate feeding guide unit is provided with a third plate feeding guide plate in addition to the second plate feeding guide plate, and the plate feeding device that suspends the printing plate is lowered to a predetermined position. When the locking lid is opened, the plate feeding guide unit approaches the locking lid, so that the second plate feeding guide plate and the third plate feeding guide plate approach the leading end side of the printing plate. The plate feeding device is further lowered so that the leading end side locking bar fits in the locking groove, and then the third plate feeding guide plate places the leading end side locking bar on the back wall of the locking groove. The locking lid closes and stores the leading end side locking bar in a state where the third plate feeding guide plate is pushed in and the leading end side locking bar is pressed into the locking groove. The printing plate supply / discharge device according to 1. Said first feed guide plate, the movable plate is coupled rotatably on the support portion, and guiding the distal end side locking bar by the movable plate is rotated, the plate feeder The plate feeding / discharging device according to claim 1 or 2, wherein the movable plate is rotated to return to the original position when the leading edge side locking bar is fitted in the locking groove. . The third plate supply guide plate is moved downward from the second plate supply guide plate from a state where it is built in the second plate supply guide plate, thereby engaging the front end side locking bar with the engagement. pushing the locking groove and the locking lid is closed to store the distal-side locking bar to return to its original position the third feed guide plate with the plate feeding guide unit moves moves The printing plate supply / discharge device according to claim 2, wherein: