JP3554313B2 - Plate processing equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate processing apparatus for forming a positioning hole and a locking piece on opposite side edges of a plate mounted on a plate cylinder of a rotary press used for printing newspapers or the like.
[0002]
[Prior art]
In order to mount the printing plate on the plate cylinder of a newspaper rotary printing press, a positioning hole for positioning is formed in the opposite side edge of the printing plate, and the side edge is bent into a predetermined shape for mounting. Form a locking piece.
[0003]
7A is a plan view of a printing plate, FIGS. 7B and 7C are cross-sectional views, and FIGS. 7D and 7E are views showing a state where the printing plate is mounted on a plate cylinder. A positioning hole 2 serving as a reference is formed at two places with respect to the top side and the ground side of the printing plate 1 on which the image of the newsprint and the image of the reference mark (so-called registration mark) 1a are formed, using a puncher for the printing plate. . Next, a plate bender or the like performs plate bending on the gripping side (ground side) and gripping side (top side) of the printing plate 1, and a locking piece for attaching the printing plate 1 to the plate cylinder. Form 3
[0004]
When the printing plate 1 is mounted on the plate cylinder 4, in the case of a so-called narrow gap type printing plate 1 shown in FIG. 7B, as shown in FIG. Insert the retaining piece 3 on the butt side and mount it. In the case of the printing plate 1 shown in FIG. 7 (c), as shown in FIG. 7 (e), the retaining piece 3 on the grip side is hooked, and the retaining piece 3 on the grip side is engaged with the spring 5a of the plate clamping mechanism 5. It is attached by pushing and pulling with the cam 5b.
[0005]
As described above, the shape and angle of the bending of the locking piece, the bending length, and the like vary depending on the rotary press manufacturer and model. In particular, the bending angle is strictly controlled so as to fall within a tolerance of about ± 1 ° in order to avoid plate breakage due to plate floating during printing.
[0006]
As a device for forming the positioning holes 2 and the locking pieces 3 in the printing plate 1, for example, Japanese Patent Application Laid-Open No. 2002-144529 discloses a device capable of supporting and mounting a printing plate having marker marks formed on both upper and lower ends in a horizontal posture. Image sensors installed at both sides of the table to detect the positions of the marking marks on the printing plate on the table, and printing wheels provided at both upper and lower ends of the printing plate A punch mechanism for forming a positioning hole on the plate cylinder of a printing press, and a bending and locking piece disposed on both sides of the table for mounting to the plate cylinder of a printing press at both upper and lower ends of the plate material. The image sensor camera detects the position of the sign of the plate on the table by the image sensor camera, and adjusts the position of the plate by moving and adjusting the table based on the detected value. and In a punch bender in which a positioning hole and a bending locking piece are respectively formed at upper and lower ends of a printing plate by a bender mechanism, the image sensor camera, the punch mechanism and the bender mechanism can be reciprocated toward the table side. The configured punch bender is described. This is particularly effective for improving the color registration quality of a printing plate used for multicolor printing.
[0007]
[Problems to be solved by the invention]
The punch bender described in JP-A-2002-144529 allows the punch mechanism and the bender mechanism to reciprocate with respect to the table so that the positioning hole and the bending locking piece can be formed regardless of the length of the plate. In addition, there is a problem that the structure of the punch bender is complicated because the table on which the printing plate is supported and mounted is movable.
[0008]
Further, regarding the conventional plate bender function, for example, as shown in the conventional plate manufacturing process of FIG. 8 as a method for obtaining a plate having a bent shape shown in FIG. Is positioned on the table 31 and overhangs from the ends of the anvils 32a and 32b provided at both ends of the printing plate 1, and the printing plate 1 is fixed to the table 31 by vacuum suction or the like (FIG. 8 ( a)). Next, the printing plate 1 is formed by lowering the plate holding bars 33a, 33b and the bending bars 34a, 34b integrally formed and pressing the printing plate 1 on the anvils 32a, 33b at the plate holding bars 33a, 33b. The anvil 32b and the plate holding bar 33b are formed with irregularities and the like to form the bent shape shown in FIG. 7C. The printing plate sandwiched between the rods 34b is bent in the shape of "F" (see FIG. 8B). Further, in this state, the bending bar 34b provided outside the plate holding bar 33b is rotated about the bending edge of the anvil 32b to obtain a predetermined bending shape (see FIG. 8C).
[0009]
At this time, as means for rotating the bending rod, as shown in FIG. 9, a spur gear 35 fitted to the center of rotation of the bending rod 34a and a rack 36 meshed with the gear 35 are attached to an air cylinder 37. 9A, there is a method of changing the state of FIG. 9A to the rotational movement of the bending rod 34a as shown in FIG. 9B. However, since the bending angle is determined by the stroke of the air cylinder as described above, it is not possible to cope with the diversification of the bending angle described above. That is, in order to cope with the change of the bending shape and angle, an air cylinder having a stroke corresponding to the bending shape and angle is manufactured each time, or a mechanical stopper portion for limiting the stroke of the cylinder is provided. It is necessary to provide them, etc., and there is a problem that the mechanical structure becomes complicated and large-scale, and the cost increases.
[0010]
Furthermore, in addition to the case where the bending shape of the plate differs depending on the rotary press, the bending angle also requires high precision as described above, but the printing plate is generally made of high-purity aluminum material, The degree of work hardening slightly varies depending on slight impurities and the degree of processing at the time of forming the aluminum plate. When the printing plate is bent by one printing plate bender, a slight difference occurs in the bending angle, and the bending angle may not be within the tight tolerance described above. In such a case, it is not easy to adjust the stroke of the air cylinder by a conventional printing plate bender or the like.
[0011]
Therefore, the present invention provides a plate processing apparatus for forming a plate positioning hole and a locking piece, which simplifies the structure of the plate processing apparatus and can easily and accurately obtain a predetermined bending angle. To provide.
[0012]
[Means for Solving the Problems]
A plate processing apparatus according to the present invention moves and positions a plate on which an image including a reference mark is formed, and forms a positioning hole and a locking piece on a top side and a ground side of the plate, respectively. A table for holding and moving the printing plate conveyed by the conveying device and moving it in the front-rear, left-right and rotational directions, and a positioning unit, and a reference unit formed on the printing plate fixed to a punch unit for processing the positioning hole . position and recognizes CCD camera, is arranged on the plate of the top side and Chigawa on the table, and bent rod to rotate to any position by a controllable motor rotational position, at least during the unloading of the plate one is an anvil movable, and a bending unit and a pressing member for pressing the plate in is lowered to the anvil, after recognizing the reference mark in the CCD camera, input And the engaging piece of the bending position based on the distance data up to the bending position from the reference mark had been is positioned by Ri bending unit with the movement of the table, and fixed in the anvil and the pressing member at a bending rod is rotated It is characterized in that a locking piece is formed on the printing plate . Further, the present invention provides a printing plate processing apparatus that moves and positions a printing plate on which an image including a reference mark is formed, and processes positioning holes and locking pieces on a top side and a ground side of the printing plate, respectively. A table that holds the printing plate conveyed by the device and moves it in the front-rear, left-right, and rotation directions to position it, and is placed on the top and bottom sides of the printing plate on the table to form positioning holes with punches and dies. A punch unit, at least one of which is fixed, a CCD camera fixed to the punch unit and recognizing the position of a reference mark formed on the plate, and arranged on the table on the top side and the ground side of the plate, respectively. A bending unit for forming a locking piece by bending with a rotatable bending bar and an anvil which is movable at least when the printing plate is carried out. After recognizing the mark, the punch position of the positioning hole and the bending position of the locking piece are moved based on the input data of the distance from the reference mark to the punch position and the bending position by moving the table. It is characterized by being positioned.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a front view of a plate processing apparatus of the present invention, and FIG. 2 is a plan view of the same. Punch units 6a and 6b, bending units 7a and 7b, and CCD cameras 8a and 8b fixed to the punch units 6a and 6b are arranged on both sides of a frame (not shown) of the plate processing apparatus. The punch unit 6b and the bending unit 7b on the ground side of the printing plate 1, which serve as a reference, are fixed to a gantry. The punch unit 6a on the top side of the printing plate 1 is provided so as to be retractable when the bending bar 9a interferes with the punch unit 6a during the bending operation of the bending bar 9a of the bending unit 7a. It moves from the position and strikes a stopper (not shown) to stop exactly at the specified position. The punch unit 6a on the top side is provided with a pusher 10 that can move forward and backward to push the printing plate 1 toward the ground side.
[0014]
The punch units 6a and 6b are composed of punches 11a and 11b and perforated dies 12a and 12b, similarly to the conventional plate puncher, and perforated dies 12a and 12b are arranged below the vertically moving punches 11a and 11b. .
[0015]
3A and 3B show an example of the bending unit of the present invention, wherein FIG. 3A is a front view and FIG. 3B is a side view. The rotation of the bending rod 9a (9b) of the bending unit is performed by attaching a timing pulley 13 to the outside of the bending rod 9a (9b) that is freely rotatably supported so as to coincide with the center of rotation. The timing pulley 15 is connected to a motor 16 having a shaft. As the motor 16, a motor capable of controlling the rotational position, such as a servomotor or a stepping motor, is used. With this configuration, by inputting a predetermined control pulse (for example, data conforming to a desired arbitrary bending angle) to the motor 16, the motor 16 rotates by an amount corresponding to this pulse, and is connected to the timing pulleys 13 and 15. The rotation is transmitted as a rotation angle of the bending rods 9a and 9b through the timing belt 14, and the printing plate 1 is pressed by the anvils 17a and 17b, and can be bent to a required bending angle. Reference numeral 18a denotes a holding member that moves down during bending to hold the printing plate.
[0016]
Here, the connection between the motor 16 and the bending rod 9a (9b) may be one without phase shift, for example, a link chain. Further, the rotation center axis of the bending rod 9a (9b) and the motor axis may be directly connected by a coupling or the like. Further, although the driving force of the motor 16 may be transmitted from only one of the bending rods 9a (9b), the other shaft 19 may be simultaneously driven using the connecting shaft 18 as shown in FIG. Good. If this method is used, the bending of the bending bar 9a (9b) during the plate bending operation can be suppressed to a minimum, which leads to an improvement in the bending accuracy of the printing plate 1.
[0017]
When the printing plate 1 on which the locking piece 3 after forming is formed is discharged, the anvil 17a temporarily escapes to separate the bent locking piece 3 and the anvil 17a from each other. It moves to the position and strikes the mechanical stopper to maintain the correct position. Note that both the anvils 17a and 17b may be movable so as to temporarily escape.
[0018]
Returning to FIGS. 1 and 2, as a transfer device for transferring the printing plate onto the table 21 and another fixed table 21a with a vacuum, for example, between the ground side and the top side punch units 6a and 6b, A transport conveyor 20 composed of several belts for transporting the printing plate 1 is arranged. A table 21 that is linearly movable in the front-rear and left-right directions and that is rotatable is disposed between the belts at the center of the conveyor 20. The table 21 is installed in a hole cut into a square so that the table 21 can be moved to another fixed vacuum-equipped table 21 a provided between the belts of the conveyor 20 (transfer). Between the belts of the conveyor 20, three other fixed vacuumed tables 21a are provided, respectively, and the table 21 is provided by a fixed vacuumed table provided between the central belts. 21a). The conveyor 20 can be moved up and down, and the plate 1 is carried in and out at a higher level than the table 21 and the other fixed vacuum table 21a. Is placed on the vacuumed table 21a.
[0019]
The printing plate 1 transported by the transport conveyor 20 is lowered onto the table 21 and another fixed table 21 a with the transport conveyor 20 lowered, and firstly held by a vacuum suction function of the table 21, The table 21 is positioned by linear movement or rotation. The table 21 has a function of sucking and holding the printing plate at the time of positioning and after positioning by vacuum. Further, the other fixed vacuum table 21a also has a vacuum suction function, and when the punching process of the positioning holes 2 or the plate bending process of the locking pieces 3 after positioning by the table 21, the entire printing plate 1 is used. Are firmly cooperated to hold and fix and position. Naturally, while the table 21 is linearly moved or rotated for positioning, the other fixed vacuum-attached table 21a does not attract the printing plate 1. Conversely, when the printing plate 1 is transported and unloaded by the transport conveyor 20 and while the table 21 is being positioned, air is blown out from another fixed vacuum-equipped table 21a, and the plate 1 is transported by the transport conveyor 20. It is also possible to assist during transport / unloading and during positioning movement of the table 21.
[0020]
An entrance stopper 22 for stopping the printing plate 1 conveyed by the conveyance conveyor 20 and a ground side stopper 23 for moving the printing plate 1 to the ground side and stopping by pressing the pusher 10 provided on the top side respectively move up and down. It is arranged as possible.
[0021]
Next, a processing procedure by the plate processing apparatus of the present invention will be described. 4 is a front view showing a processing procedure, FIG. 5 is a plan view of the same, and FIG. 6 is a front view showing movement of a printing plate.
[0022]
(1) In FIG. 1, FIG. 5 (a) and FIG. 6, the printing plate 1 on which the image including the reference mark is formed is raised to a higher level than the table 21 and the other fixed vacuum table 21a. The plate 1 is conveyed by the conveyor 20 and stopped by abutting against the entry stopper 22. Thereafter, the printing plate 1 is abutted by the pusher 10 on the top side (left side in the drawing) to the stopper 23 on the ground side (right side in the drawing), and then transferred. The conveyer 20 is lowered to place the printing plate 1 on the table 21 and another fixed table 21a with vacuum, and the table 21 is temporarily positioned by vacuum suction.
[0023]
(2) The positions of the reference marks are recognized by the CCD cameras 8a and 8b fixed to the punch units 6a and 6b, and the table 21 is operated such that the reference marks match the position information of the reference marks of the CCD cameras 8a and 8b. Position.
[0024]
(3) In FIGS. 4 (a) and 5 (a), after positioning the printing plate 1 on the table 21, vacuum suction is also performed on the other fixed vacuum-equipped table 21a, and the entire printing plate 1 is cooperated. Make sure that the holding / fixing and positioning do not shift. Thereafter, the punches 11a and 11b of both punch units 6a and 6b are lowered to the die 12a to process the positioning holes 2.
[0025]
(4) In FIG. 4 (b), FIG. 5 (b) and FIG. 6 (b), after the positioning hole 2 is formed, the table 21 is vacuum-adsorbed to a position where one-step bending on the top side is possible, and The printing plate 1 is moved. At this time, the vacuum suction of the other fixed vacuum table 21a is released, and after the positioning of the table 21 is completed, the fixed vacuum table 21a again performs vacuum suction and cooperates with the printing. The plate 1 is fixed, and then a one-step bending on the top side is formed by the bending bar 9a of the bending unit 7a and the anvil 17a. At the time of bending on the top side, the punch unit 6a on the top side is retracted to the retracted position so as not to interfere with the bending rod 9a.
[0026]
(5) In FIGS. 4 (c), 5 (c) and 6 (c), the table 21 is vacuum-adsorbed to the position where the top-side bending and the ground-side bending can be performed after the top-side one-step bending. Then, the printing plate 1 is moved to the top side for positioning, and the other fixed vacuum-attached table 21a also performs vacuum suction to cooperate to fix the printing plate 1, and thereafter each of the top side and the ground side is fixed. Two-stage bending on the top side and bending on the ground side are performed by the bending rods 9a and 9b of the bending units 7a and 7b and the anvils 17a and 17b.
[0027]
(6) In FIG. 4 (d), FIG. 5 (d) and FIG. 6 (d), after finishing the processing of the locking piece 3, the top side anvil 17a is moved to the ground side to release the locking piece 3, and thereafter The printing plate 1 was moved to the ground side while vacuum-sucking on the table 21 (the vacuum suction of the other fixed vacuum-equipped table 21a was also released), and the locking pieces 3 were released from the anvil 17b. Thereafter, the vacuum suction is released, the transport conveyor 20 is raised, and the printing plate is placed and carried out.
[0028]
According to the above procedure, the positioning hole 2 and the locking piece 3 can be formed in the printing plate 1. Basically, as described above, the other fixed vacuum-attached table 21a does not perform vacuum suction of the printing plate 1 while the table 21 is positioned for each process, and performs each process after the positioning is completed. At this time, since the suction force of only the table 21 is weak (positioning is shifted), the vacuum suction of the printing plate 1 is also performed on the other fixed vacuum-equipped table 21a to ensure the positioning and improve the quality of plate making. Things.
[0029]
The plate processing apparatus of the present invention shifts the positioning hole 2 from a normal position based on a pin register system (see “Newspaper Printing Handbook” published on April 10, 1997, pp. 30 to 31). Necessary double ender and double gate type printing plates can be easily processed. Double-end printing is performed using roll D (4 pages in total width—paper A, 3/4 of total width in 3 pages—C in volume, 2 pages in width—D in rolls) as a web. After printing on the front and rear sides with the half width (drive side) of the set, the sheet is turned over with the turn bar and the bay wind roller, and the paper is returned to the other half width (operation side) of the color printing section again and the back side is printed. (See October 31, 1980, published by The Nippon Shimbun, “Newspaper Printing (Revised Edition)” on page 62). In this case, when the printing plate is positioned so that the papers (webs) that are continuously printed and turned over by the turn bar and the bay wind roller alternately intersect alternately so that the papers do not touch each other (do not rub). It is necessary to set the position of one of the printing plates (usually the drive side) at a position different from the normal positioning of the printing plate.
[0030]
FIG. 10 is a diagram showing the positional relationship between each printing plate and the punch positions of the positioning holes 2, reference marks, and symbols when positioning various printing plates. In the case of the double-end plate making shown in FIG. 10B, the dimension A from the plate edge to the reference mark 1a and the dimension B from the plate to the design are the same as those of the normal plate making shown in FIG. However, it is necessary to change the dimension from the reference mark 1a to the positioning hole 2 from C1 to C2. As a result, when the mounting position is viewed from the center of the machine, the printing plate is mounted at a position slightly distant from the normal position. In this case, the printing plate on the normal drive side is targeted, and the printing plate on the operation side is often punched at a normal positioning position. As a result, printing can be performed such that a gap is formed between papers (webs) that are printed on both sides and alternately flow, and printing can be performed without interference between the papers.
[0031]
Further, in the case of printing a double-gate type newsprint or the like in which a folded paper surface is formed inside both pages by using the manufacturing apparatus described in Japanese Patent Application Laid-Open No. 2000-335820 according to the present applicant, When using a roll of paper or C roll paper, the entire width of 4 pages and 3 pages of width will be used without slitting. In some cases, when advertising paper etc. is posted using the entire paper, it is as if the picture on the paper is In order to make it look like a continuous one, as shown in FIG. 10 (c), the pattern (image portion) is printed inwardly than usual, and the mounting positions of the printing plate and the printing plate on the driving side and the printing plate on the operation side are also set. Must be zero. Similarly, the dimension A from the printing plate end to the reference mark 1a is the same as that of a normal plate making. That is, it is necessary to move the mounting positions of the printing plates inward, and the positioning holes are used to correct the movement of the pins. 2 (dimension C3) is required (this positional relationship is for a printing plate mounted on the left side facing away. In the case of a printing plate mounted on the right side facing away, the positioning hole is located at the position of dimension C4. 2 will be punched). For this reason, the punch position of the register positioning hole 2 is also provided at a position slightly farther than the machine center when viewed from the machine center, as compared with the normal punch position.
[0032]
As described above, by inputting predetermined data according to the application at the time of double ender printing or double gate type paper printing, if the plate is moved in the direction perpendicular to the top and bottom and punched, It is not necessary to shift the fiducial mark at the time of plate making to shift the position of the positioning hole as in the past, and it is not necessary to install multiple separate stopper pins for each printing application, so accurate positioning is possible, and another work and installation can be done. It becomes unnecessary.
[0033]
Along with such diversification of newspaper printing based on the pin register system, the plate processing apparatus of the present invention can flexibly cope.
[0034]
【The invention's effect】
According to the present invention, the punch unit and the bending unit are not moved during processing, but are fixed at a fixed position, and the printing plate is moved on the table. Therefore, the structure of the apparatus can be simplified, and the positioning holes and the locking holes can be accurately formed. Pieces can be processed.
[0035]
When bending in the next step from the positioning hole punch after positioning, the conventional machine operates the top and bottom positioning hole punches and bends without moving the plate, whereas in the case of the present invention, basically Has the advantage that it can be operated by moving the printing plate to a predetermined position without moving each mechanism.
[0036]
In addition, since the table is used to move the printing plate, the movement of the table was several mm within the field of view of the camera in the conventional machine.However, it is only necessary to extend the stroke with the mechanism using the same servomotor, which leads to an increase in cost. Not. Rather, the main mechanical parts such as the punch unit and the bending unit do not have to be moved by using an expensive servo mechanism as in the conventional machine, so that there is a great advantage in manufacturing.
[0037]
The bending unit is a heavy object, and it is easier to move the lighter object or move the lighter plate or move the lighter plate if the heavy object is fixed. The accuracy of the punching and bending of the positioning holes is improved, which leads to the improvement of the color registration quality at the time of printing.
[0038]
In addition, the plate processing apparatus of the present invention uses a servomotor or the like that can control the rotation degree of the bending bar that directly contacts the printing plate and performs bending, so that the rotation angle of the bending bar can be freely set. As compared to using a conventional air cylinder or adding a mechanical stopper to it, it can respond to a wide range of plate bending shapes set by rotary presses and can perform high-precision plate bending. . Further, since the structure becomes simple from the mechanical structure, there is an advantage in manufacturing the device.
[Brief description of the drawings]
FIG. 1 is a front view of a plate processing apparatus according to the present invention.
FIG. 2 is a plan view of the plate processing apparatus of the present invention.
3A and 3B show an example of a bender unit of the present invention, wherein FIG. 3A is a front view and FIG. 3B is a side view.
FIG. 4 is a front view showing a processing procedure by the plate processing apparatus of the present invention.
FIG. 5 is a plan view showing a processing procedure by the plate processing apparatus of the present invention.
FIG. 6 is a front view showing the movement of the plate by the plate processing apparatus of the present invention.
7A is a plan view of a printing plate, FIGS. 7B and 7C are cross-sectional views, and FIGS. 7D and 7E are views showing a state where the printing plate is mounted on a plate cylinder.
FIG. 8 is a view showing a conventional plate manufacturing process.
FIG. 9 is a view showing an example of a conventional means for rotating a bending rod.
FIG. 10 is a diagram illustrating a positional relationship between each printing plate, a punch position, a reference mark, and a symbol when positioning various printing plates.
[Explanation of symbols]
1: Plate 1a: Reference mark 2: Positioning hole 3: Locking piece 4: Plate cylinder 5: Plate clamping mechanism 5a: Spring 5b: Cam 6a, 6b: Punch unit 7a, 7b: Bending unit 8a, 8b: CCD camera 9a, 9b: bending rod 10: pusher 11a, 11b: punch 12a, 12b: die 13: timing pulley 14: timing belt 15: timing pulley 16: motor 17a, 17b: anvil 18: connecting shaft 19: shaft 20: transport conveyor 21: Table 21a: Vacuum Table 22: Entry Stopper 23: Ground Side Stopper 31: Table 32a, 32b: Anvil 33a, 33b: Plate Holder Bar 34a, 34b: Bending Bar 35: Gear 36: Rack 37: Air Cylinder

Claims (3)

In a printing plate processing apparatus that moves and positions a printing plate on which an image including a reference mark is formed, and processes a positioning hole and a locking piece on a top side and a ground side of the printing plate,
A table for positioning by moving the printing plate that has been transported held in longitudinal and lateral directions and the rotational direction of the conveying device,
A CCD camera fixed to a punch unit for processing the positioning hole and recognizing a position of a reference mark formed on the printing plate;
Are arranged on a printing plate of the top side and Chigawa on the table, and bent rod to rotate to any position by a controllable motor rotational position, and at least one of which is movable anvil during unloading of the plate, A bending unit having a holding member for lowering the printing plate with the anvil and moving down ,
Wherein after recognizing the reference marks by a CCD camera, the bending position of the locking piece on the basis of the distance data to the bending position from a reference mark which has been input is positioned by Ri bending unit with the movement of the table,
A printing plate processing apparatus , wherein a locking piece is formed on a printing plate fixed by an anvil and a holding member with a rotated bending rod . In a printing plate processing apparatus that moves and positions a printing plate on which an image including a reference mark is formed, and processes a positioning hole and a locking piece on a top side and a ground side of the printing plate,
A table that holds the printing plate conveyed by the conveying device and moves and positions the plate in the front-rear, left-right, and rotation directions, and
A punch unit, which is arranged on the top side and the ground side of the printing plate on the table, respectively, and forms a positioning hole with a punch and a die, at least one of which is fixed,
A CCD camera fixed to the punch unit and recognizing a position of a reference mark formed on the printing plate;
A bending unit that is disposed on the top side and the ground side of the printing plate on the table, and that is formed by bending with a rotatable bending bar and an anvil at least one of which is movable when the printing plate is carried out, to form a locking piece. With
After recognizing the fiducial mark with the CCD camera, the punch position of the positioning hole and the bending position of the locking piece are adjusted by moving the table based on the input data of the distance from the fiducial mark to the punch position and the bending position. A plate processing apparatus characterized by being positioned by a unit and a bending unit . The plate processing apparatus according to claim 2 , wherein the bending unit has a structure in which a shaft of the rotatable bending bar is rotated to an arbitrary position by a motor whose rotation position can be controlled .

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