JPH06250406A - Punching device - Google Patents

Abstract

PURPOSE:To easily bore exact punch holes in a color plate. CONSTITUTION:This punching device is a device to bore the punch holes in plural sheets of original plates for multicolor printing baked images and plural register marks in order to position these original plates relative to each other. The device has a table 1, CCD cameras 2, 3, 4, positioning arms, a punching mechanism 22, a moving frame 21 and a movement holding part 29. This table 1 is used to place the original plates thereon. The CCD cameras 2, 3, 4 and the positioning arms function to detect the register marks and register the original plates to the specified position on the table 1 on the basis of the centers of the original plates. The punching mechanism 22 bores the punch holes in the original plates. The moving frame 21 moves the punching mechanism 22 relative to the registered original plates. The movement holding part 29 stores the movement positions of the moving frame 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching device, and more particularly to punching a color plate for relative positioning between a plurality of color plates for multicolor printing having a pattern and a plurality of positioning marks printed thereon. The present invention relates to a punch device for making holes.

[0002]

2. Description of the Related Art For example, a printing plate set in a printing machine is produced by printing a pattern of a collective film on an unexposed printing plate. An assembly film is a plate-sized film printed with images and characters collected, and is created by printing multiple original plates on a transparent sheet and printing it on a plate-sized photosensitive film. . In recent years,
An image setter is also used to print an image or character data in a plate-collected state directly on a photosensitive film to form an aggregate film.

A printing plate for printing can be prepared by printing the design of the aggregate film thus created on the printing plate with a printing machine. In the baking process with this baking machine,
The punching holes of the printing plate and the punching holes of the aggregate film are aligned with a pin, and the assembly film and the printing plate are brought into close contact with each other and exposed.
This is repeated a number of times according to the printing color to create a plurality of printing plates.

Since the pattern of the obtained printing plate is printed on one sheet of paper, the relative positional relationship between the pattern and the punch holes is accurate between the grouped films in the configuration in which the grouped films are aligned. Must match. As a conventional device that meets this requirement, there is a punch device disclosed in Japanese Patent Laid-Open No. 58-36333. This punching device includes a light table on which a color plate such as a collective film or a printing plate is placed so that a part thereof faces the punching portion, and a light receiving means for detecting a positioning mark printed on the color plate corresponding to a design. When,
A moving guide for moving the light receiving means vertically and horizontally on the light table, and a moving means for moving the light table vertically and horizontally according to the light receiving result of the light receiving means are provided.

In this punching device, first, the first color plate serving as a reference is set at a predetermined position on the light table so that one side is located at the punching part. Then, the light receiving means is moved in the vertical and horizontal directions to be arranged at a position facing the positioning mark of the color plate. When the operation of the device starts, the light table moves according to the light receiving result of the light receiving means, and the positioning mark is arranged at the center of the light receiving means. Then, punch holes are formed in the color plate. Punch holes are similarly formed for the other color plates, but in this case, the light receiving means is left fixed. As a result, the punch positions are unified among the color plates.

[0006]

SUMMARY OF THE INVENTION In the above conventional configuration,
When registering the first color plate, the light receiving means must be moved vertically and horizontally so that the light receiving means faces the positioning mark. The operation of moving the light receiving means must be performed each time the size of the color plate is changed. At this time, since the light receiving means has to be moved in two vertical and horizontal directions, it is not easy to make the light receiving means face the positioning mark, and the operation is troublesome.

An object of the present invention is to make it possible to easily make accurate punch holes for a color plate.

[0008]

SUMMARY OF THE INVENTION A punching device according to the present invention provides a color plate for relative positioning between a plurality of color plates for multicolor printing on which a pattern and a plurality of positioning marks are printed. This is a device for punching holes. This device comprises a table, a registering means, a punching means, a relative moving means and a storing means.

The table is for mounting color plates.
The registration means detects the positioning mark and registers the color plate at a fixed position on the table based on the center of the color plate. The punching means is to punch holes in the color plate. The relative movement means relatively moves the color plate and the punch means registered by the registration means. The storage means stores the movement amount of the relative movement means.

[0010]

In the punching device according to the present invention, when the first color plate is placed on the table, the registration means detects the positioning mark, and the color plate is placed at a fixed position on the table with the center reference of the color plate. Register. Then, the relative moving means relatively moves the registered color plate and the punching means, and the punching means punches a punch hole in the color plate. This relative movement amount is stored in the storage means. Next, when punching holes in the next color plate with the same pattern, after performing registration in the same manner with the center of the color plate as the reference, the relative moving means is moved by the stored movement amount, and the punch means punches. Make a hole.

Here, since the registration is performed based on the central reference,
Even if the size of the color plate changes, the registration means can easily detect the positioning mark without making a complicated movement.
Therefore, an accurate punch hole can be easily formed in the color plate.

[0012]

1 and 2, a punching device according to an embodiment of the present invention mainly comprises a table 1, three CCD cameras 2, 3 and 4 movable in the table 1, and an original plate moving device. The positioning arm 5 of FIG. Above the rear side of the positioning arm 5, a monitor unit 10 having three CRTs 7, 8 and 9 corresponding to the CCD cameras 2, 3 and 4 is arranged. On Table 1,
A pair of knobs 11 and 12 for manually moving the CCD cameras 2, 3 and 4, a key panel 13, and a punch unit 14 for punching holes on one side of the original plate are provided.

Of the three CCD cameras 2, 3 and 4, the first CCD camera 2 can move along a slit 15 extending from the approximate center of the table 1 to the base side of the positioning arm 5. On the other hand, the second CCD camera 3 and the third CCD camera 4
Means 1 extending in the left-right direction across the substantially center of the table 1.
It can move along the pair of slits 16, 17. Both slits 16 and 17 are arranged on the same straight line, and the slit 15 is orthogonal to both slits 16 and 17.

CCD cameras 2, 3, 4 and knobs 11, 1
2 are connected by a mechanism incorporated in the table 1 and shown in FIG. In FIG. 3, the knob 11 is
An annular wire 19 extending along the left-right direction of the table 1.
It is connected to a pair of CCD cameras 3 and 4 via.
As a result, when the knob 11 is turned, both CCD cameras 3 and 4 move toward and away from the approximate center of the table 1 by the same distance. On the other hand, the knob 12 and the CCD camera 2 are connected via a wire 20, and when the knob 12 is turned, the CCD camera 2 is moved to both CCD cameras 3, 2.
It moves in a direction orthogonal to the moving direction of 4.

The positioning arm 5 is rotatable up and down about its base, and can take the upper position shown in FIG. 1 and the lower position on the table 1. An actuator (not shown) is attached to the base of the positioning arm 5, and the positioning arm 5 can move and rotate on the table 1 by the actuator. Further, a suction mechanism (not shown) is attached to the positioning arm 5, and the suction mechanism can suck the original plate arranged on the table 1 by a vacuum pump (not shown).

The punch section 14 is arranged on the front side portion of the table 1. The punch unit 14 includes a moving frame 21 having a flat plate shape arranged in the left-right direction and a moving frame 2
It has five punch mechanisms (only three are shown) 22 which are arranged on the upper surface of the punch 1 at a distance in the left-right direction. A drive shaft 23 for driving the punch mechanism 22 extends in the left-right direction on the moving frame 21.

The drive shaft 23 is rotatably supported by the moving frame 21. A drive gear 24 is fixed to the drive shaft 23 at a position facing each punch mechanism 22. The drive gear 24 meshes with a driven gear (not shown) provided in the punch mechanism 22 to operate the punch mechanism 22. At the left end of the drive shaft 23, an operation lever 2 for rotating the drive shaft 23 to manually operate the punch mechanism 22.
5 are arranged. The punch mechanism 22, the drive shaft 23, and the drive gear 24 on the moving frame 21 are provided on the cover 2
Covered by 6.

A moving guide 27 is attached to the left end of the moving frame 21. The moving guide 27 is movably supported by a guide rail 28 arranged along the depth direction at the left end of the table 1. A moving holding mechanism 29 for storing the moving amount of the moving frame 21 is arranged at the right end of the moving frame 21. As shown in FIG. 4, the movement holding mechanism 29 includes a pin guide 30 that can move back and forth within the table 1 by 10 mm, and a pin guide 3.
Support member 31 for slidably supporting 0 and pin guide 3
The contact member 38 regulates the maximum amount of movement when 0 is moved in the depth direction of the table 1, and the insertion pin 32 for screwing the moving frame 21 to the pin guide 30. On the upper surface of the pin guide 30, holes 33 having female thread portions 33a that can be screwed into the insertion pins 32 and pin hole portions 33b that fit into the insertion pins 32 are formed at 10 mm intervals. Further, the pin guide 30 is a fine movement dial 3 rotatably supported on the front side surface of the table 1.
4 (FIG. 2) makes it possible to make a fine movement back and forth by 10 mm. This amount of fine movement can be known by a scale formed at the tip of the pin guide 30 at intervals of 1 mm and a scale formed on the support member 31.

At the lower end of the insertion pin 32, as shown in FIG. 5, a male screw portion 32 that is screwed into the female screw portion 33a of the hole 33 is formed.
In addition, a pin portion 32b that fits into the pin hole portion 33b of the hole 33 is formed above the male screw portion 32a of the insertion pin 32. The male screw portion 32a and the female screw portion 33a are screwed together to form the pin portion 32b and the pin hole portion 33.
By fitting with b, the moving frame 21 is securely fixed to the pin guide 30. A rotary knob 36 is fixed to the upper end of the insertion pin 32. Inside the rotary knob 36, the rotary knob 36 and the moving frame 2
A spring 37 is arranged in a compressed state between the first and second springs. Therefore, the male threaded portion 32a with respect to the female threaded portion 33a
When the screwing of a is released, the insertion pin 32 moves up to the position shown by the chain double-dashed line, and the movable frame 21 becomes movable. Further, at the right end of the moving frame 21, a support member 31
A guide wheel 40 rolling above is arranged.

Next, the operation and operation procedure of the above punching device will be described. First, the operator places the positioning arm 5 in an upward posture and places the original plate of the first color on the table 1.
Here, it is arranged so that the center of the original plate substantially coincides with the center of the table 1. After setting the original plate, the operator lowers the positioning arm 5 onto the table 1. As a result, the original plate is sandwiched between the table 1 and the positioning arm 5.

When the operator inputs an operation start command through the key panel 13, it is judged whether or not the CCD cameras 2, 3 and 4 are projecting three of the four register marks formed on the original plate. . This judgment is made by CCD cameras 2, 3,
It is determined by performing image processing on the image pickup data of No. 4.
Note that the dragonfly is printed on the basis of the center of the design printed on the original plate. If each of the CCD cameras 2, 3 and 4 does not display the register mark, CR
An error occurrence is displayed on T7,8,9. In this case, the operator adjusts a defective portion in the positional relationship between the register mark and the CCD cameras 2, 3, 4.
This adjustment is performed by rotating the knob 11 and the knob 12, and manually shifting the original plate.

When the register mark enters the field of view of the CCD cameras 2, 3 and 4, the positioning arm 5 starts the suction operation. As a result, the original plate is in a state of being attracted to the positioning arm 5. Then, the original plate is registered at a predetermined position on the table 1 according to the image processing result. Here, based on the image information from the CCD cameras 2, 3 and 4, the original plate is moved so that the register mark of the original plate and the reference position on the table 1 coincide with each other. The movement of the original plate is realized by horizontally moving and rotating the positioning arm 5 holding the original plate on the table 1.

When the registration operation is completed, the operator
The punch unit 14 is moved in the depth direction of FIG. 2 to be placed at a desired punch position on the original plate. Then, the operator screws the insertion pin 32 into the closest hole 33. At this time,
If necessary, rotate the fine movement dial 34 to rotate the pin guide 3
Finely move 0 back and forth. When the arrangement of the punch section 14 is completed, the operator rotates the operation lever 25 and operates the punch mechanism 22 to open five punch holes in the original plate. When the operator instructs the operation panel 13 to complete the operation, the suction operation by the positioning arm 5 is released.
Then, the operator places the positioning arm 5 on the upper side and takes out the original plate having punch holes.

When punching holes in the 2nd to 4th color original plates, the punch section 14 is used in a state where the moving position is fixed when punching holes in the 1st color original plate. Here, punch holes that are exactly aligned with the punch holes formed in the first color original plate are formed on the second to fourth color original plates that are registered on the basis of the center. Here, the original plate is registered at a fixed position on the table with the center of the original plate as a reference.
Therefore, even if the size of the original changes, the center of the original does not change.
The operations of 3 and 4 are sufficient in the fixed direction regardless of the size of the original plate. Therefore, the device is simplified, and punch holes can be easily and accurately formed.

If a punch hole is punched in the original plate in a state where the pin guide 30 is in contact with the member 38, even if the pin guide 30 is moved thereafter, which hole 33 the insertion pin 32 was inserted into is determined. It becomes possible to easily and accurately position the punch portion 14 at the position of the previous process simply by storing it. For example, if a punch hole is made in the original plate for four colors while the pin guide 30 is in contact with the contact member 38, this one can be recreated for one color later.
Even if it becomes necessary to punch holes in the color original plate,
It is possible to quickly and accurately punch holes at positions corresponding to the punch holes of the original plates for the other three colors.

Other Embodiments (a) Instead of manually performing the punching operation by the punching section 14, punching holes may be automatically opened. Here, the punching operation of the punching unit 14 and the movement of the punching unit 14 can be automated. The punching operation can be realized by using a cam mechanism, and the movement can be realized by using a driving mechanism using a ball screw and a stepping motor. The amount of movement of the punch unit 14 by the stepping motor is stored in the memory, and the same value is used for the original plates of each color. (B) Instead of moving the punch unit 14 to dispose the punch unit 14 at the punch position of the original plate, the original plate may be moved to dispose the punch unit 14 at the punch position of the original plate.

In this case, it can be realized by fixing the punch section 14 and sucking the original plate by the positioning arm 5 to move it to the punch section 14. (C) Instead of moving the CCD cameras 2, 3, 4 in the table 1, the CCD cameras 2, 3, 4 may be moved on the table 1.

[0028]

In the punch device according to the present invention, the color plate is registered at a fixed position on the table with the center as a reference, and the relative movement amount between the color plate and the punch means is stored. Even if the size changes, you can easily make accurate punch holes for the color plate.

[Brief description of drawings]

FIG. 1 is a perspective view of a punch device as an embodiment of the present invention.

FIG. 2 is a perspective partial view thereof.

FIG. 3 is a perspective view of a CCD camera driving unit.

FIG. 4 is a partially cutaway perspective view of a moving holding mechanism.

5 is a partial sectional view taken along line VV of FIG.

[Explanation of symbols]

 1 table 2 first CCD camera 3 second CCD camera 4 third CCD camera 5 positioning arm 14 punching part 21 moving frame 22 punching mechanism 27 moving guide 28 guide rail 29 moving holding mechanism

Claims (1)

[Claims] 1. A punching device for punching holes in a color plate for relative positioning between a plurality of color plates for multicolor printing, in which a pattern and a plurality of positioning marks are printed. A table on which a plate is placed, a registration means for detecting the positioning mark, and registering the color plate at a fixed position on the table with a center reference of the color plate, and a punch hole in the color plate. A punch device comprising: punching means for opening; relative moving means for relatively moving the color plate registered by the registering means and the punching means; and storage means for storing a moving amount of the relative moving means.