JP2005238510A - Printing plate processing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printing plate processing device which can easily change the bending R or the bending angle of a fastening piece of the printing plate so as to enable the printing plate to be tightly mounted on a variety of plate cylinders. <P>SOLUTION: In the printing plate processing device equipped with bending units 7a and 7b which position the printing plate 1 on a table 26 and form the fastening piece on each of the top and the bottom side of the printing plate 1, the bending units 7a and 7b are each equipped with fixtures 19a and 19b for fixing a plurality 9 of anvils 17a and 17b arranged on the top and the bottom side of the printing plate 1 on the table 26 respectively; a press member for fixedly pressurizing the printing plate 1 to the anvils 17a and 17b; and bending bars 9a and 9b for bending the printing plate 1. In addition, the anvils 17a and 17c with the differing bending R and/or bending angle, are installed on at least one fixture 19a and one anvils 17a can be selected according to the desired bending R and/or the desired bending angle of the fastening piece. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a printing plate processing apparatus for forming a locking piece on a printing plate mounted on a plate cylinder of a rotary press used for printing newspapers and the like.

  Conventionally, in order to mount a printing plate on a plate cylinder of a newspaper rotary printing press, a positioning hole for positioning is formed on the opposite side edge of the printing plate, and the side edge is bent into a predetermined shape and attached. For this purpose, a locking piece is formed.

  FIG. 8 shows the printing plate and the mounting state of the printing plate, (a) is a plan view of the printing plate, (b) and (c) are cross-sectional views of the printing plate, and (d) and (e) are printing plates. It is a figure which shows the state mounted | worn with the plate cylinder. As shown in FIG. 8 (a), reference positioning holes are provided at two positions relative to the top side and the ground side of the printing plate 1 on which an image of the newspaper page content and the reference mark (so-called register mark) 1a is formed. 2 is formed with a plate puncher or the like. Next, the printing plate 1 is bent on the holding side (ground side) and the holding bottom side (top side) of the printing plate 1 with a printing plate vendor or the like, and a locking piece for mounting the printing plate 1 on the printing cylinder. 3 is formed.

  In the case of the so-called narrow gap type printing plate 1 shown in FIG. 8B, the plate 1 is mounted on the plate cylinder 4 as shown in FIG. This is done by inserting the locking piece 3 on the side of the mouth. In the case of the printing plate 1 shown in FIG. 8C, as shown in FIG. 8E, the holding piece 3 on the holding side is hooked, and the holding piece 3 on the holding side is attached to the spring 5a of the plate clamping mechanism 5. The cam 5b is attached by being pushed and pulled.

  As described above, there are various methods for mounting the printing plate on the plate cylinder, and the bending R, bending angle, and bending length of the locking piece vary depending on the manufacturer and model of the rotary press. In particular, the bending R and the bending angle are strictly controlled in order to avoid plate breakage problems due to plate floating during printing.

  As a bender mechanism for forming a locking piece on a printing plate, there is one described in Patent Document 1. The bender mechanism includes a bending receiving blade longer than the width of the printing plate, a printing plate presser for pressing and fixing the printing plate to the bending receiving blade, and a receiving blade for bending the protruding portion of the printing plate pressed and fixed by these. A bending movable blade that bends and deforms downward along the plate, and the protruding portion of the printing plate fixed by the bending receiving blade and the plate presser is bent along the bending receiving blade by the bending movable blade. Thus, substantially V-shaped locking pieces are formed at the top and bottom ends of the printing plate.

  However, as described above, the bending R and the bending angle of the locking piece of the printing plate vary depending on the plate cylinder of each company's rotary press. Therefore, the vendor mechanism described in Patent Document 1 is mounted on the plate cylinder of each company's rotary press. It was not possible to form a printing plate locking piece suitable for the above. That is, in the bender mechanism described in Patent Document 1, the bending R and bending angle of the locking piece of the printing plate are uniquely defined by the shape of the bending receiving blade, so that it is not necessary unless the bending receiving blade is replaced. The bending R and bending angle of the stop piece cannot be changed.

In addition, some newspaper companies use a plurality of rotary presses to print various types of newspapers. In this case, the printing plate is locked to fit the plate cylinders of a plurality of companies by a single vendor mechanism. It is virtually impossible to form a piece. Therefore, there is a case where the bending R or bending angle of the locking piece does not match the plate clamping mechanism of the plate cylinder, and as a result, the printing plate floats from the plate cylinder, causing problems such as plate breakage during printing. There was a fear.
JP 2002-144529 A

  Accordingly, the present invention provides a printing plate processing apparatus capable of easily changing the bending R and the bending angle of the locking piece of the printing plate so that the printing plate can be mounted in close contact with various plate cylinders. With the goal.

  The present invention relates to a printing plate processing apparatus provided with a bending unit that positions a printing plate on a table and forms locking pieces on the top side and the ground side of the printing plate, respectively. A fixed body that is disposed on each of the side and the ground side and fixes the anvil; a pressing member that presses and fixes the printing plate to the anvil; and a bending rod that bends the printing plate. A plurality of anvils having different bending angles are fixed, and one anvil can be selected according to a desired bending R and / or bending angle of the locking piece.

  In the present invention, the fixed body is provided so as to be rotatable around the horizontal axis, and one anvil can be selected by rotating the fixed body. A stopper mechanism that stops the rotation of the fixed body can also be provided.

  Further, the fixed body can be rotated by a control motor capable of controlling the rotation angle.

  According to the present invention, a plurality of anvils having different bending Rs and / or bending angles are fixed to at least one fixed body, and one anvil can be selected from these anvils. The bending angle can be easily changed. Also, by selecting one anvil according to the desired bending R and / or bending angle of the locking piece, it is possible to process a locking piece that fits the plate cylinder and to attach the printing plate in close contact with the plate cylinder. It becomes like this.

  In addition, by providing the fixed body so as to be rotatable around the horizontal axis, the desired anvil can be easily selected, and by providing a stopper mechanism for stopping the rotation of the fixed body, the position of the fixed body after selecting the desired anvil. Can be securely fixed.

  Further, by rotating the fixed body by the control motor, the position of the desired anvil can be surely matched with the bending position.

  Embodiments of the present invention will be described below based on examples shown in the drawings.

    FIG. 1 is a front view of a printing plate processing apparatus according to the present invention, and FIG. 2 is a plan view thereof. On both sides of a pedestal (not shown) of the plate processing apparatus, 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. The base side punch unit 6b and bending unit 7b of the printing plate 1 serving as a reference are fixed to a frame. The punch unit 6a on the top side of the printing plate 1 is provided so as to be retractable when the bending rod 9a interferes with the punch unit 6a during the bending operation of the bending rod 9a of the bending unit 7a. It moves from the retracted position, hits a stopper (not shown), and stops at the specified position accurately. Further, the top punch unit 6a is provided with a pusher 10 capable of moving forward and backward to push the printing plate 1 to the ground side.

  Like the conventional plate puncher, the punch units 6a and 6b are composed of punches 11a and 11b and perforated dies 12a and 12b, and perforated dies 12a and 12b are arranged below the vertically moving punches 11a and 11b. .

  FIG. 3 shows details of the bending unit 7a (7b), (a) is a front view, and (b) is a side view. The bending rod 9a (9b) of the bending unit 7a (7b) is rotatably supported, and a timing pulley 13 is attached to the outside of the bending rod 9a (9b) so as to coincide with the rotation center, and the timing belt 14 is attached. It is possible to rotate by connecting to a control motor 16 having a timing pulley 15 as a shaft.

  As the control motor 16, a servo motor, a stepping motor or the like capable of controlling the rotation angle is used. With this configuration, by inputting a predetermined control pulse (for example, data according to a desired arbitrary bending angle) to the control motor 16, the control motor 16 rotates by an amount corresponding to this pulse, and the timing pulley 13, 15 and the timing belt 14, the rotation is transmitted as the rotation angle of the bending rod 9a (9b), and the printing plate 1 is pressed by the anvil 17a (17b) and can be bent to a desired bending angle. Reference numeral 18a (18b) denotes a presser member that descends and presses the plate 1 during bending.

  The anvil 17a (17b) is detachably attached to one end of a fixed body 19a (19b) disposed on the top side and the ground side by a bolt. An anvil 17c (17d) having a bending R and / or a bending angle different from that of the anvil 17a (17b) is detachably attached to the other end of the fixed body 19a (19b) with a bolt. Further, the fixed body 19a (19b) is rotatably provided around the horizontal axis 20a (20b).

  4A and 4B show a rotational drive mechanism of the fixed body, where FIG. 4A is a front view and FIG. 4B is a side view. The fixed body 19a (19b) can be rotated by attaching a timing pulley 21 to a horizontal shaft 20a (20b) serving as a center of rotation and connecting the timing pulley 22 to a control motor 24 having the timing pulley 23 as an axis. It has become.

  As the control motor 24, a servo motor, a stepping motor or the like capable of controlling the rotation angle is used. Then, by inputting a predetermined control pulse to the control motor 24, the control motor 24 rotates by an amount corresponding to this pulse, and the rotation is fixed to the fixed body 19a (via the timing pulleys 21 and 23 and the timing belt 22). 19b) as a rotation angle (180 ° rotation in the embodiment). Accordingly, it is possible to select either the anvil 17a (17b) or the anvil 17c (17d) fixed to the fixed body 19a (19b) and to make sure that it matches the bending position.

  Note that the connection between the control motor 24 and the fixed body 19a (19b) may be performed with a phase shift, for example, a link chain. Further, the horizontal shaft 20a (20b) of the fixed body 19a (19b) and the shaft of the control motor 24 may be directly connected by coupling or the like.

  Here, the setting range of the bending R of each anvil 17a to 17d is usually about 0.4 to 1.0 mm. However, in the embodiment, the bending R of the anvils 17a and 17b is 0.5 mm, and the anvils 17c and 17d The bend R was 1.0 mm. On the other hand, the setting range of the bending angle is usually about 40 ° to 50 ° on the ground side, and on the top side, the first step is about 30 ° to 40 °, and the second step is about 20 ° to 30 ° from the horizontal. However, in the embodiment, since the locking piece is processed by rotating the bending rod to an arbitrary bending angle with the control motor, the bending angle of each anvil is about 10 ° smaller than the desired bending angle. The ground side was set to 30 ° and the top side was set to 20 °. In addition, when rotating a bending rod with an air cylinder and pressing against an anvil to form a locking piece, the bending angle of each anvil is set to a desired bending angle.

  As shown in FIG. 4, stopper mechanisms 25, 25 are arranged at both lower ends of the fixed body 19 a (19 b). As shown in FIG. 4A, the stopper mechanism 25 includes a stopper body 25a having a bifurcated tip that can contact the fixed body 19a (19b) and the anvil 17c (17d). The stopper main body 25a is connected to the air cylinder 25c via a link 25b, and the stopper main body 25a moves up and down by expanding and contracting the air cylinder 25c. When the stopper main body 25a is lifted, its bifurcated tip comes into contact with the fixed body 19a (19b) and the anvil 17c (17d), thereby preventing the rotation of the fixed body 19a (19b). That is, by selecting either the anvil 17a (17b) or the anvil 17c (17d) according to the rotation of the control motor 24 and making it coincide with the bending position, the fixed body 19a ( 19b) can be fixed securely.

  Returning to FIG. 1 and FIG. 2, as a transport device for transporting the plate 1 onto the table 26 and other fixed vacuum table 26a, for example, between the ground side and the top side punch units 6a and 6b. Is provided with a conveyor 27 composed of several belts for conveying the printing plate 1. A table 26 that can move linearly in the front-rear and left-right directions and that can rotate horizontally is disposed between the belts in the center of the conveyor 27. The table 26 is installed in a hole cut out in a square so that the table 26 can be moved to another fixed vacuum-equipped table 26a provided between the belts of the conveyor 27 (conveyance). Three other fixed vacuum-equipped tables 26a are installed between the belts of the conveyor 27, and the table 26 is installed at a fixed vacuum-equipped table provided between the central belts. 26a). The conveyor 27 can move up and down, and the plate 1 is carried in and out in a state where it is raised to a higher level than the table 26 and other fixed vacuum table 26a, and the plate 1 is fixed to the table 26 and other fixed by lowering. Is placed on the vacuum-equipped table 26a.

  The plate 1 transported by the transport conveyor 27 is lowered on the transport conveyor 27 and placed on the table 26 and other fixed vacuum table 26a, and is first held by the vacuum suction function of the table 26. The table 26 is positioned by linear movement or horizontal rotation. The table 26 has a function of adsorbing and holding the printing plate 1 during positioning and after positioning by vacuum. Further, the other fixed vacuum table 26a also has a vacuum suction function, and the entire printing plate 1 is removed during the punching process of the positioning hole 2 after the positioning by the table 26 or the processing process of the locking piece 3. Position, fix and hold in close cooperation. Of course, while the table 26 is linearly moved or horizontally rotated for positioning, the other fixed vacuum table 26a does not attract the printing plate 1. On the contrary, when the printing plate 1 is conveyed and carried out by the conveying conveyor 27 or while the table 26 is positioned, air is blown out from the other fixed vacuum-equipped table 26 a so that the printing plate 1 is conveyed by the conveying conveyor 27. You may make it assist at the time of conveyance and carrying out, and the positioning movement of the table 26. FIG.

  Further, an approach stopper 28 for stopping the printing plate 1 conveyed by the conveying conveyor 27 is provided on the downstream side of the conveying direction of the printing plate 1, and the printing plate 1 moved to the ground side by the pusher 10 is stopped. Therefore, a ground stopper 29 is provided on the ground side. Each of the entry stopper 28 and the ground side stopper 29 is provided so as to move up and down.

  Hereinafter, a processing procedure by the printing plate processing apparatus of the present invention will be described. FIG. 5 is a front view showing a processing procedure, FIG. 6 is a plan view thereof, and FIG. 7 is a front view showing movement of the printing plate.

(1) In FIGS. 5 (a) and 6 (a), the printing plate 1 on which an image including a reference mark is formed is raised to a level higher than that of the table 26 and the other fixed vacuum table 26a. Is transported by the transport conveyor 27, stopped by abutting against the entrance stopper 28, and then the printing plate 1 is abutted against the ground side stopper 29 by the top pusher 10, and then the transport conveyor 27 is lowered and the printing plate 1 is removed. It is placed on the table 26 and another fixed vacuum-equipped table 26 a and temporarily positioned by vacuum suction by the table 26.

(2) After recognizing the position of the reference mark by the CCD cameras 8a and 8b fixed to the punch units 6a and 6b, the punch position of the positioning hole based on the inputted distance data from the reference mark to the punch position Is positioned at the positions of the punch units 6 a and 6 b by moving the table 26.

(3) After positioning the printing plate 1 with the table 26, vacuum suction is also performed with the other fixed vacuum-equipped table 26a, and the entire printing plate 1 is held and fixed in cooperation so that the positioning is not displaced. Thereafter, the punches 11a and 11b of both punch units 6a and 6b are moved down to the dies 12a and 12b to process the positioning holes.

(4) In FIG. 5 (b), FIG. 6 (b) and FIG. 7 (b), after forming the positioning hole, vacuum suction is performed on the table 26 to the position where the top side bending is possible, and printing is performed on the ground side. Move plate 1 At this time, the vacuum suction of the other fixed vacuum table 26a is released, and after the positioning of the table 26 is finished, the vacuum table 26a fixed again performs vacuum suction and cooperates for printing. After the plate 1 is fixed, the top side one-step bending is formed by the bending rod 9a and the anvil 17a of the bending unit 7a. When the top side bending is performed, the top side punch unit 6a is retracted to the retracted position so as not to interfere with the bending rod 9a.

(5) In FIG. 5 (c), FIG. 6 (c) and FIG. 7 (c), the table 26 is vacuum-adsorbed to a position where the top side two-step bending and the ground side bending can be performed after the top one-step bending Then, the printing plate 1 is moved and positioned to the top side, and the other vacuumed table 26a is also vacuum-sucked to cooperate to fix the printing plate 1, and then each of the top side and the ground side is fixed. The bending units 7a and 7b of the bending units 9a and 9b and the anvils 17a and 17b perform two-step bending on the top side and bending on the ground side. The anvils 17a and 17b used in the bending process for forming the locking piece 3 are selected by rotating the fixing bodies 19a and 19b as described above with reference to FIG. Has a bending angle. Further, at the time of bending, the fixing bodies 19a and 19b for fixing the anvils 17a and 17b are securely fixed by the stopper mechanism 25 as described with reference to FIG.

(6) In FIG. 5 (d), FIG. 6 (d) and FIG. 7 (d), after finishing the locking piece 3, the top and bottom fixed bodies 19a and 19b are slightly rotated (10 ° to 15 °). As a result, the anvils 17a and 17b are released from the locking pieces 3 and the printing plate 1 is lifted, and then the conveying conveyor 27 is raised to load the printing plate 1 and carry it out.

  The positioning hole 2 and the locking piece 3 can be formed in the printing plate 1 by the above procedure.

  In the embodiment, the locking pieces 3 are formed using the anvils 17a and 17b. However, the anvils 17c and 17d are selected and used according to the desired bending R and / or bending angle of the locking pieces 3. May be. In the embodiment, two anvils are fixed to one fixed body, but three anvils may be fixed at a pitch of 120 °. In this case, the fixed body is rotated at a 120 ° pitch by the control motor to select a desired anvil. In short, the number of anvils fixed to the fixed body is not limited as long as an anvil that is not selected during plate processing does not hinder the processing. Further, in the embodiment, the rotation angle of the bending rods 9a and 9b is controlled by the control motor to form the locking piece. However, the bending rod is rotated by the air cylinder so that the bending rod is pressed against the anvil. A locking piece may be formed.

It is a front view of the printing plate processing apparatus of this invention. It is a top view of the plate processing apparatus of the present invention. The detail of the vendor unit of this invention is shown, (a) is a front view, (b) is a side view. The rotational drive mechanism of a fixed body is shown, (a) is a front view, (b) is a side view. It is a front view which shows the process sequence by the printing plate processing apparatus of this invention. It is a top view which shows the process sequence by the printing plate processing apparatus of this invention. It is a front view which shows the movement of the printing plate by the printing plate processing apparatus of this invention. The printing plate and the mounting state of the printing plate are shown, (a) is a plan view of the printing plate, (b) and (c) are sectional views of the printing plate, and (d) and (e) are mounting the printing plate on the plate cylinder. It is a figure which shows the state which carried out.

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: control motor 17a, 17b, 17c, 17d: anvil 18a, 18b: presser member 19a, 19b: Fixed body 20a, 20b: Horizontal shaft 21: Timing pulley 22: Timing belt 23: Timing pulley 24: Control motor 25: Stopper mechanism 25a: Stopper body 25b: Link 25c: Air cylinder 26: Table 26a: Vacuum With table 27: the conveyor 28: entry stopper 29: earth side stopper

Claims (3)

In a printing plate processing apparatus equipped with a bending unit for positioning a printing plate on a table and forming locking pieces on the top side and the ground side of the printing plate,
The bending unit includes a fixing body that is arranged on each of the top side and the ground side of the printing plate on the table and fixes the anvil, a pressing member that presses and fixes the printing plate to the anvil, and a bending rod that bends the printing plate. A plurality of anvils having different bending R and / or bending angles are fixed to at least one fixed body, and one anvil can be selected according to a desired bending R and / or bending angle of the locking piece. Printing plate processing equipment.   The printing plate processing apparatus according to claim 1, further comprising a stopper mechanism capable of rotating the fixed body around a horizontal axis and stopping the rotation of the fixed body.   The printing plate processing apparatus according to claim 1, wherein the fixed body is rotated by a control motor capable of controlling a rotation angle.

Images