JP2003276163A - Punching device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drawing apparatus which can accurately position a printing plate on a printing machine regardless of unevenness of the printing plate. <P>SOLUTION: Above a recording drum 1, a carrying unit 9 is rockably arranged. The carrying unit 9 has a first carrying path 91 for carrying in a printing plate, and a carrying path 92 for carrying out the printing plate. On the distal end side of the carrying unit 9, this punching device 10 is arranged on the printing plate 100. The printing plate 100 is carried to the punching device 10 through the first carrying path 91 of the carrying unit 9 before carrying onto the recording drum 1, and on the distal end of the printing plate 100, a positioning hole for the recording drum and a positioning hole for the printing machine are formed. The positioning hole for the recording drum of the printing plate 100 is fitted on a positioning pin 15 which is provided on the outer peripheral surface of the recording drum 1. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching device for punching a printing plate used in a drawing device for drawing on a printing plate mounted on the outer peripheral surface of a drum.

[0002]

2. Description of the Related Art A drawing device is used to irradiate a printing plate used for printing with light for drawing. In a drum-type drawing device, a printing plate is mounted on a recording drum that can rotate in the main scanning direction, and a recording head equipped with a laser diode or the like moves in the sub-scanning direction parallel to the rotation axis of the recording drum. To draw.

FIG. 9 is a schematic perspective view of a recording drum of a conventional drawing apparatus. A printing plate 160 made of aluminum is mounted on the recording drum 150 shown in FIG. 9 as a photosensitive material. On the outer peripheral surface of the recording drum 150, a leading end clamp 170 that fixes one end of the printing plate 160 and a trailing end clamp 180 that fixes the other end of the printing plate 160 are attached. The trailing end clamp 180 has a built-in magnet and is fixed by magnetic force to the outer peripheral surface position of the recording drum 150 according to the size of the printing plate 160.

Recording drum 1 to which a printing plate 160 is attached
The reference numeral 50 is rotationally driven at a relatively low speed around the rotary shaft 190, and drawing is performed on the surface of the printing plate 160.

[0005]

In the conventional drawing apparatus,
Positioning pins (not shown) for positioning the printing plate 160 are provided on the outer peripheral surface of the recording drum 150.
A recording drum positioning hole that fits into a positioning pin is formed at one end of the printing plate 160. When the plate 160 is mounted on the recording drum 100, the plate 160 is accurately positioned on the outer peripheral surface of the recording drum 150 by fitting the recording drum positioning holes of the plate 160 to the positioning pins of the recording drum 150. Can be positioned.

On the other hand, the cylinder of the printing machine is also provided with a positioning pin for positioning the printing plate 160. The position of the positioning pin differs depending on the specifications of each printing machine. Therefore, it is necessary to form a positioning hole for the printing press on the printing plate 160 at a position according to the specifications of the printing press.

Usually, after drawing on the printing plate 160 by a drawing device, a punching machine is used to form a positioning hole for the printing machine at a predetermined position of the printing plate 160 with the end face of the printing plate 160 as a reference. By fitting the positioning holes for the printing press formed in the printing plate 160 with the positioning pins of the printing press, the printing plate 160
Can be positioned on the cylinder of the printing press.

However, since the printing plate 160 varies in size, when the positioning holes for the printing press are formed with the end surface of the printing plate 160 as a reference after drawing by the drawing device,
A deviation occurs in the relationship between the image formed on the plate 160 and the positioning holes for the printing press. In this case, it is necessary to look at the printing result obtained by the printing press using the printing plate 160 and shift the printing plate 160 mounted on the cylinder of the printing press to correct the shift of the printing position. Therefore, the printing work becomes complicated.

An object of the present invention is to provide a punching device capable of accurately positioning a printing plate on a printing machine regardless of variations in the dimensions of the printing plate.

[0010]

[Means for Solving the Problems and Effects of the Invention] (1)
1st invention The punching device which concerns on 1st invention has a cylindrical drum which has a rotating shaft, and the positioning pin was provided in the outer peripheral surface on which a printing plate is mounted, and a drum mainly around a rotating shaft. A punching device for punching a printing plate used in a drawing device provided with a rotation driving means for rotating in a scanning direction and a recording head for drawing on a printing plate mounted on an outer peripheral surface of a drum, The punch base holding the printing plate on its upper surface, and the printing plate drawn by the drawing device and the first positioning hole fitted to the positioning pin of the drawing device are wound around the printing plate held by the punch base. A plurality of punching means forming a second positioning hole to be fitted into a positioning pin provided in the mounted printing machine, and the plurality of punching means are configured to be replaceable with respect to the punch base. It is a thing.

In the punch device according to the present invention, the printing plate is held on the upper surface of the punch base, and the first positioning hole and the second positioning hole are formed in the printing plate held by the punch base by a plurality of punching means. Are formed at the same time.

After that, the printing plate is mounted on the outer peripheral surface of the drum in a state where the first positioning hole of the printing plate is fitted into the positioning pin of the drawing device. It is possible to draw on the plate on the outer peripheral surface of the drum by the recording head, while rotating the drum on which the plate is mounted in the main scanning direction around the rotation axis by the rotation driving means. At the time of printing, the printing plate drawn by the recording head is wound around the printing machine, the positioning holes of the printing plate are fitted into the positioning pins provided in the printing machine, and printing is performed using the printing plate.

In this way, the first positioning hole and the second positioning hole are simultaneously formed in the printing plate, and drawing is performed by the recording head with the positioning pin of the drawing device fitted with the positioning hole of the printing plate. Therefore, the relationship between the image formed on the printing plate and the second positioning hole can be kept constant regardless of variations in dimensions. Therefore, when printing on the printing press using the printing plate, the printing plate can be accurately positioned on the printing press, and the printing position does not shift. As a result, the work of correcting the printing position shift is unnecessary. Therefore, the efficiency of printing work is improved.

Further, by exchanging a plurality of punching means of the punching device, the first positioning hole and the second positioning hole are formed at appropriate positions of the plate according to the size of the plate and the specifications of the printing machine. can do.

(2) Second Invention A punching device according to a second invention is the structure of the punching device according to the first invention, further comprising positioning means for positioning the printing plate with respect to the punch base. .

In this case, the plate can be positioned with respect to the punch base by the positioning means. Thereby, the first and second positioning holes can be accurately formed at the predetermined positions of the printing plate.

(3) Third Invention A punching device according to a third invention is the same as the punching device according to the second invention, further comprising an operation panel for inputting the dimensions of the printing plate, and the positioning means. The plate is positioned with respect to the punch base according to the size of the plate input from the operation panel.

In this case, the size of the plate is input by the operation panel, and the plate is positioned with respect to the punch base by the positioning means according to the size of the plate input by the operation panel.

(4) Fourth Invention A punching device according to a fourth invention is the punching device according to any one of the first to third inventions, in which the printing plate is an aluminum printing plate. is there.

In this case, the first positioning hole and the second positioning hole are simultaneously formed in the aluminum plate.

(5) Fifth Invention A punching device according to a fifth invention is the punching device according to any one of the first to fourth inventions, wherein the drawing device prints on an outer peripheral surface of a cylindrical drum. A clamp for pressing and fixing a part of the plate is provided, and both the first positioning hole and the second positioning hole are formed near a part of the printing plate pressed by the clamp. .

In this case, a part of the printing plate is pressed and fixed on the outer peripheral surface of the cylindrical drum by the clamp. The first positioning hole and the second positioning hole are formed in the vicinity of a part of the printing plate pressed by the clamp.

[0023]

1 is a schematic side view of a drawing apparatus provided with a punching device according to an embodiment of the present invention, and FIG.
FIG. 2 is a schematic front view of the drawing device of FIG. 1.

1 and 2, the drawing apparatus includes a cylindrical recording drum 1. The recording drum 1 is rotationally driven in the direction of arrow A (main scanning direction) around the rotary shaft 1a by the rotary drive device 4. A printing plate 100 made of aluminum is mounted on the outer peripheral surface of the recording drum 1 as a photosensitive material. One end of the plate 100 is fixed to the outer peripheral surface of the recording drum 1 by a plurality of front end clamps 2, and the other end of the plate 100 is fixed to the outer peripheral surface of the recording drum 1 by a plurality of rear end clamps 3.

As shown in FIG. 2, a recording head 8 having a plurality of laser diodes 81 is arranged on the front side of the recording drum 1. The recording head 8 is movably attached to the guide 82, and moves in the direction of arrow B (sub-scanning direction) in synchronization with the rotation of the recording drum 1.

A plurality of laser diodes 8 of the recording head 8
1 is driven by the laser diode drive circuit unit 110. The laser diode drive circuit unit 110 includes a plurality of laser diode drive circuits 111 corresponding to the plurality of laser diodes 81 of the recording head 8.

The image signal generation circuit 130 generates a serial image signal. Serial / parallel converter 120
Converts the serial image signal generated by the image signal generation circuit 130 into a parallel image signal, and supplies these image signals to the plurality of laser diode drive circuits 111 of the laser diode drive circuit unit 110, respectively. As a result, each laser diode 81 of the recording head 8 is driven by the corresponding laser diode drive circuit 111,
The plate 100 is irradiated with laser light.

As shown in FIG. 1, a clamp driving device 5 is provided on the rear side of the recording drum 1. The clamp driving device 5 is used for mounting the trailing end clamp 3 on the recording drum 1, removing the trailing end clamp 3 from the recording drum 1, and releasing the leading end clamp 2 on the recording drum 1.

The clamp driving device 5 is provided with a pair of clamp arms 6 which are swingable in the direction of arrow C. A drive bar 60 is attached between the pair of clamp arms 6, and a plurality of first drive devices 7 are attached to the drive bar 60. As shown in FIG. 2, a drive pin 75 for fixing and releasing the rear end clamp 3, two holding pins 76 for holding the rear end clamp 3, and a plate 100 are attached to the first drive device 7. A release pin 78 is provided for releasing the tip clamp 2 at times. Also, the clamp driving device 5
Includes a second drive device (not shown) that releases the tip clamp 2 when the printing plate 100 is removed.

Further, as shown in FIG. 1, a transport unit 9 is disposed above the recording drum 1 so as to be swingable in the direction of arrow R. The transport unit 9 is a first for loading a printing plate.
And a second transport path 92 for carrying out the printing plate. When the printing plate 100 is loaded, the first of the transport unit 9
The printing plate 100 is supplied onto the recording drum 1 through the transport path 91. When the printing plate 100 is unloaded, the recording drum 1
The printing plate 100 removed from is conveyed to the outside through the second conveyance path 92 of the conveyance unit 9.

A plate 100 is provided on the leading end side of the transport unit 9.
A punching device 10 for arranging a recording drum positioning hole and a printing machine positioning hole is provided therein. Printing plate 1
00 is a transport unit 9 before being supplied onto the recording drum 1.
It is supplied to the punching device 10 through the first transport path 91, and the recording drum positioning hole and the printing machine positioning hole are formed at the tip of the printing plate 100. The positioning hole for the recording drum of the printing plate 100 engages with the positioning pin 15 provided on the outer peripheral surface of the recording drum 1.

The control unit 600 of FIG. 1 comprises a CPU (central processing unit), an input / output interface, etc., and controls each unit of the drawing apparatus. An operation panel 700 for an operator to input various information such as the dimensions of the printing plate 100 and various commands is connected to the control unit 600.

FIG. 3A is a plan view of the punching device 10, and FIG. 3B is a front view of the punching device 10. Also, FIG.
FIG. 6 is a plan view showing replacement of a template of the punch device 10.

As shown in FIG. 3, the punch device 10 includes a punch base 200. Width-shifting motors 201 are attached to both ends of the front surface of the punch base 200, respectively. Further, a pair of ball screws 204 extending horizontally along the front surface of the punch base 200 are rotatably provided. Each ball screw 204 is rotationally driven by the width-shifting motor 201.

A width-shifting bearing 202 is screwed onto each ball screw 204. A cylindrical holding portion 203 is rotatably provided on the upper surface of the width-shift bearing 202. When the width-shifting motor 201 rotates, the width-shifting bearing 202 moves in the direction of arrow X. Printing plate 100
Are mounted between a pair of offset bearings 202.

A vacuum suction groove 205 is formed on the front side of the center of the upper surface of the punch base 200. The vacuum suction groove 205 is connected to a suction source (not shown) such as a vacuum pump or an aspirator via a pipe. By operating the suction source, the back surface of the plate 100 on the vacuum suction groove 205 is sucked, and the plate 100 is suction-held on the upper surface of the punch base 200.

1 is on the rear side of the upper surface of the punch base 200.
A pair of rectangular recesses 206 are provided (see FIG. 4).
The template 300 is mounted in each of the recesses 206. The template 300 has a recording drum positioning hole that fits with the positioning pin 15 of the recording drum 1.
A punch block 301 for one or a plurality of recording drums for forming 0 is attached. Further, the template 300 is provided with one or a plurality of punch blocks 302 for a printing machine for forming a printing machine positioning hole that fits with a positioning pin of the printing machine on the printing plate 100.

One end surface of the template 300 is provided with a recess 2
The template 300 is positioned in the concave portion 206 by abutting on one side surface of the No. 06 which becomes the reference surface 206a and urging the other end surface in the direction toward the reference surface 206a by an urging means such as a spring.

A plurality of types of templates 300 are prepared according to the size of the printing plate 100 and the specifications of the printing machine. The template 300 shown in FIG. 3 has a punch block 301 for one recording drum and a punch block 302 for one printing machine. The template 300 shown in FIG. 3 can be removed and replaced with the template 300 shown in FIG. The template 300 of FIG.
A punch block 301 for one recording drum and a punch block 302 for two printing machines are mounted.

Each template 300 has a plurality of punch blocks 301 corresponding to a plurality of types of printing plates 100.
It is also possible to select the punch block 301 used for forming the positioning holes for the recording drum by inputting from the operation panel 700 of FIG. 1 according to the size of the printing plate 100 used. Further, a plurality of punch blocks 302 corresponding to a plurality of types of printing machines are provided, and punch blocks used to form the positioning holes for the printing machine by input from the operation panel 700 of FIG. 1 according to the specifications of the printing machine used for printing. It is also possible to select 302.

At the center of the upper surface of the punch base 200,
Plate edge detection sensor 207 for detecting the edge of the plate 100
Is provided. The printing plate 100 is a width-shifting bearing 20.
The plate 30 is arranged between the two, and the tip of the plate 100 is the template 30.
When inserted into the punch blocks 301 and 302 attached to 0, the plate edge detection sensor 207 is turned on.

When the pair of width-adjusting bearings 202 is moved to the center by rotating the width-adjusting motor 201 from a predetermined origin position, the outer peripheral surfaces of the holding portions 203 of the width-adjusting bearings 202 are located on both sides of the plate 100. Abut the end face,
The plate 100 is positioned at the center of the punch base 200. After that, the back surface of the printing plate 100 is sucked by the suction source through the vacuum suction groove 25. As a result, the printing plate 100
Is fixed to a predetermined position of the punch base 200.

In this state, the punching block 301 for the recording drum forms a positioning hole for the recording drum at the tip of the printing plate 100, and at the same time, the punching block 302 for the printing machine places the printing plate 100 at a predetermined position on the printing plate. Positioning holes are formed.

It should be noted that the template 300 matching the dimensions of the printing plate 100 and the specifications of the printing press may be mounted in the recess 206 of the punch base 200, or a plurality of types of printing press 100 and a plurality of types of printing presses can be used. A template 30 having a plurality of punch blocks 301 and 302
0 may be mounted and the punch block 301 or 302 to be used may be selected based on the information input from the operation panel 700.

FIG. 5A is a plan view of the printing plate 100 in which the positioning holes for the recording drum and the positioning holes for the printing machine are formed. FIG. 5B shows the positioning of the printing plate 100 on the outer peripheral surface of the recording drum 1. It is a top view showing the state where it did.

In FIG. 5A, two U-shaped recording drum positioning holes 101 are formed at the leading end of the printing plate 100, and two printing machine positioning holes 102 are formed near the leading end of the printing plate 100. There is.

In FIG. 5B, the recording drum positioning hole at the front end of the plate 100 is positioned by the positioning pin 15 on the outer peripheral surface of the recording drum 1, and the front end of the plate 100 is moved by the front end clamp 2 to the recording drum 1. Is fixed to the outer peripheral surface of.

FIG. 6 is a side view showing the structure of the transport unit 9. The transport unit 9 includes a first transport path 91 for loading a plate, a second transport path 92 for unloading a plate, a transport path switching mechanism 93, and a first transport mechanism 9 in the unit main body 900.
4 and a second unloading mechanism 95.

The transport path switching mechanism 93 comprises a transport path switching motor 930, a gear 931, a cam gear 932, a cam follower 933 and a cam follower guide 934. A gear 931 is attached to the transport path switching motor 930, a cam gear 932 meshes with the gear 931, and the cam follower 933 is fixed to the cam gear 932. The cam follower 933 is the cam follower guide 9
34 is engaged. The cam follower guide 934 is fixed to the unit main body 900, and the unit main body 900 is swingably supported by a predetermined support member (not shown) around the rear portion.

When the conveyance path switching motor 930 rotates, the cam gear 932 rotates via the gear 931 and the cam follower 933 fixed to the cam gear 932 moves the cam follower guide 934 up and down. As a result, the transport unit 9 swings in the direction of arrow R.

The first transport mechanism 94 comprises a transport roller drive motor 940, pulleys 941a, 941b, 941c, 9
41d, belt 942, and three transport rollers 94
3, 944 and 945. A pulley 941a is attached to the conveying roller drive motor 940, and the pulleys 941 are attached to the conveying rollers 943, 944 and 945, respectively.
b, 941c, 941d are attached. The rotational force of the transport roller drive motor 940 is generated by the pulleys 941a, 941c, 94 via the belt 942 from the pulley 941a.
It is transmitted to 1d. Thereby, the transport rollers 943, 9
44 and 945 rotate.

The second transport mechanism 95 comprises a transport roller drive motor 950 and transport rollers 951 and 952. The transport roller drive motor 950 drives the transport rollers 951 and 952 to rotate.

Further, the transport roller 94 of the first transport path 91
A nip roller 963 is disposed adjacent to the No. 3 unit. The nip roller 963 is swingably supported by a swing member 962. Gear 9 to nip roller drive motor 960
61a is attached. The gear 961a meshes with a gear 961b attached to the swing member 962. When the nip roller drive motor 960 rotates, the swing member 962 swings via the gears 961a and 961b,
The nip roller 963 contacts the transport roller 943. Accordingly, the transport roller 943 and the nip roller 963
Thus, the printing plate 100 is held.

The printing plate 10 is provided at the tip of the first transport path 91.
A plate leading edge detection sensor 970 for detecting the leading edge of 0 is disposed, and a plate trailing edge detecting sensor 971 for detecting the trailing edge of the plate 100 is disposed at the center of the first transport path 91. There is.

Next, the operation of the transport unit 9 and the punching device 10 will be described with reference to FIGS.

First, as shown in FIG. 6, the transport path switching motor 930 moves the transport unit 9 to the upper position. The plate 10 is placed on the first transport path 91 of the transport unit 9.
0 is set, and the plate 100 is operated from the operation panel 700 of FIG.
Enter the printing plate information such as dimensions and give work instructions.

When a plurality of punch blocks 301 and 302 are mounted on the template 300 shown in FIG. 3,
Information on the positioning holes for the recording drum and the positioning holes for the printing machine can also be input as printing plate information from the operation panel 700.

The conveyance roller drive motor 940 of the first conveyance mechanism 94 is rotated to convey the plate 100 to the punch device 10, and the width adjustment motor 201 shown in FIG. Offset bearing 202
Is moved to the vicinity of both ends of the punch base 200. When the plate leading edge detection sensor 207 of the punching device 10 is turned on, the width adjusting motor 201 moves the width adjusting bearing 202 to the center of the punch base 200 according to the size of the plate 100 while the transport roller driving motor 940 is rotated. Move towards. As a result, the printing plate 100 is positioned at the center of the punch base 200.

The back surface of the printing plate 100 is vacuum-sucked through the vacuum suction groove 205 to fix the printing plate 100 to the punch base 200. Then, the transport roller drive motor 940 and the width-shifting motor 201 are stopped.

In this state, the recording drum punch block 301 of the punching device 10 forms the recording drum positioning hole 101 at the front end of the printing plate 100, and at the same time, the punch block 302 for the printing machine makes a predetermined position of the printing plate 100. A positioning hole 102 for a printing machine is formed in the.

When a plurality of punch blocks 301 and 302 are mounted on the template 300, the punch blocks 301 and 302 selected from the plurality of punch blocks 301 and 302 are punched simultaneously based on the plate information. To do.

Next, the nip roller drive motor 960 lowers the nip roller 963 to bring it into contact with the conveying roller 943, and holds the printing plate 100. Further, the vacuum suction by the vacuum suction groove 205 of the punch base 200 is released.
Next, the transport roller drive motor 940 is rotated in the reverse direction, and the plate 100 is pulled back to the first transport path 91 in the transport unit 9 until the plate edge detection sensor 970 is turned off.

Next, as shown in FIG. 7, the transport path switching motor 930 swings the transport unit 9 to the lower position. Further, the nip roller drive motor 960 separates the nip roller 963 from the transport roller 943.

Further, the clamp arm 6 is swung to move the first
The drive device 7 is brought close to the outer peripheral surface of the recording drum 1, and the release pin 78 of the first drive device 7 presses the rear end portion of the front end clamp 2. As a result, a gap is formed between the front end of the tip clamp 2 and the outer peripheral surface of the recording drum 1.

In this state, the transport roller drive motor 940
Is rotated to convey the printing plate 100 toward the recording drum 1, insert the leading end of the printing plate 100 into the gap between the front end portion of the leading end clamp 2 and the outer peripheral surface of the recording drum 1, and The recording drum positioning hole 101 is fitted to the positioning pin 15 on the recording drum 1.

After stopping the conveying roller drive motor 940, the clamp arm 6 is returned in the reverse direction, and the first drive device 7
The release pin 78 of is separated from the tip clamp 2. As a result, the front end of the printing plate 100 is fixed to the outer peripheral surface of the recording drum 1 by the front end clamp 2.

After that, the conveying roller drive motor 940 is rotated and the recording drum 1 is rotated, and the printing plate 100 is rotated.
After being wound around the outer peripheral surface of the recording drum 1, the rear end of the printing plate 100 is fixed to the outer peripheral surface of the recording drum 1 by the rear end clamp 3 as shown in FIG.

In this way, the printing plate 100 is fixed to the outer peripheral surface of the recording drum 1, and drawing is performed on the printing plate 100 by the recording head 8 of FIG.

When the drawing of the printing plate 100 by the recording head 8 is completed, the rear end clamp 3 is released by the first driving device 7 of the clamp driving device 5, and then the recording drum 1 is rotated in the opposite direction.

As shown in FIG. 8, the leading edge of the plate 100 is fed to the feeding roller 95 of the second feeding mechanism 95 of the feeding unit 9.
1 and 952, and feed roller drive motor 950
The transport rollers 951 and 952 are rotated by the
0 is drawn into the second transport path 92 in the transport unit 9.
After that, the second driving device 62 of the clamp driving device 5 releases the front end clamp 2 on the recording drum 1, and the plate 100
To the outside through the second transport path 92 of the transport unit 9.

In the drawing apparatus of this embodiment, the punching device 10 simultaneously forms the recording drum positioning hole 101 and the printing machine positioning hole 102 by the punching device 10 before drawing by the recording head 8. 1
Drawing is performed by the recording head 8 with 01 being positioned by the positioning pin 15 of the recording drum 1. As a result, the printing plate 1 can be printed regardless of variations in the dimensions of the printing plate 100.
It is possible to keep the relationship between the image formed on No. 00 and the positioning hole 102 for the printing press constant. Therefore, the printing plate 10
When printing is performed by a printing machine using 0, the printing position does not shift. As a result, the work of correcting the deviation of the printing position becomes unnecessary, and the efficiency of the printing work is improved.

The punch base 20 of the punching device 10 is also used.
By replacing the template 300 mounted on the plate 0, the recording drum positioning hole 101 is provided at an appropriate position on the plate 100 according to the size of the plate 100 and the specifications of the printing machine.
Further, the positioning hole 102 for the printing press can be formed.

Alternatively, a plurality of punch blocks 30 corresponding to a plurality of types of printing plates 100 or a plurality of types of printing machines.
By using the template 300 on which the plates 1 and 302 are mounted and selecting the punch blocks 301 and 302 according to the type of the printing plate 100 and the type of the printing press, the printing plate can be matched to the dimensions of the printing plate 100 and the specifications of the printing press. The recording drum positioning hole 101 and the printing machine positioning hole 102 can be formed at appropriate positions of 100.

Therefore, the working cost for manufacturing the printing plate 100 corresponding to various printing machines can be reduced.

When the positioning pin 15 is provided on the recording drum 1 at a position corresponding to the positioning pin of the printing machine, the recording drum positioning hole 101 and the printing machine positioning hole 102 can be made common. . In this case, the template 300 having the punch block 302 for the printing machine is mounted on the punch base 200 of the punching device 10.

In the above-described embodiment, the recording drum positioning hole 101 is formed in a U shape, but the shape of the recording drum positioning hole 101 is not limited to the U shape, and it is fitted to the positioning pin 15 on the recording drum 1. Other shapes may be used as long as they have the desired shape.

[Brief description of drawings]

FIG. 1 is a schematic side view of a drawing device including a punch device according to an embodiment of the present invention.

FIG. 2 is a schematic front view of the drawing apparatus of FIG.

3A and 3B are a plan view and a front view of a punch device in the drawing device of FIG.

FIG. 4 is a plan view showing replacement of a template of the punch device of FIG.

5A and 5B are a plan view of a printing plate on which a positioning hole for a recording drum and a positioning hole for a printing machine are formed and a plan view showing a state in which the printing plate is positioned on the outer peripheral surface of the recording drum.

6 is a side view showing a configuration of a transport unit in the drawing apparatus of FIG.

FIG. 7 is a side view showing the operation of the transport unit shown in FIG.

FIG. 8 is a side view showing the operation of the transport unit shown in FIG.

FIG. 9 is a perspective view of a recording drum in a conventional drawing device.

[Explanation of symbols]

1 recording drum 2 Tip clamp 3 Rear end clamp 4 rotary drive 5 Clamp drive 6 Clamp arm 7 First drive 8 recording head 9 Transport unit 10 punch device 15 Positioning pin 62 Second drive device 91 First transport path 92 Second transport path 93 Transport path switching mechanism 94 First transport mechanism 95 Second transport mechanism 100 printing plates 101 Recording drum positioning hole 102 Positioning hole for printing machine 200 punch base 201 width adjustment motor 202 Width bearing 300 templates 301,302 punch block

Claims (5)

[Claims] 1. A cylindrical drum having a rotary shaft and provided with positioning pins on an outer peripheral surface on which a printing plate is mounted, and a rotary drive for rotating the drum in the main scanning direction around the rotary shaft. A punching device for punching a printing plate used in a drawing device comprising a means and a recording head for drawing on the printing plate mounted on the outer peripheral surface of the drum. The punch base held, the first positioning hole fitted to the positioning pin of the drawing device, and the printing plate drawn by the drawing device are wound around the printing plate held by the punch base. A plurality of perforation means forming a second positioning hole that fits into a positioning pin provided in the printing machine mounted, and the plurality of perforation means are configured to be replaceable with respect to the punch base. Punching equipment characterized by Place 2. The punching device according to claim 1, further comprising a positioning means for positioning the printing plate with respect to the punch base. 3. An operation panel for inputting the size of the plate is further provided, wherein the positioning means positions the plate with respect to the punch base according to the size of the plate input from the operation panel. The punch device according to claim 2, wherein 4. The punching device according to claim 1, wherein the printing plate is a printing plate made of aluminum. 5. The drawing device includes a clamp for pressing and fixing a part of the printing plate on an outer peripheral surface of the cylindrical drum, and the first positioning hole and the second positioning hole. Are formed in the vicinity of a part of the printing plate pressed by the clamp.
The punch device according to any one of to 4.