JPH068402A - Device for automatic mounting and dismounting of form plate in imprinter - Google Patents

Abstract

PURPOSE:To automatically mount a base plate in a predetermined position of a plate cylinder and dismount the same therefrom, which base plate has a form plate surface of a smaller size than a total width size of a plate cylinder of an imprinter. CONSTITUTION:A plurality of positioning holes are provided in a plate cylinder 2 of an imprinter 1 which has a magnetized outer peripheral surface. Nonused holes among such positioning holes are filled by magnetic pins, and a base plate 25 made of a ferromagnetic material and having a form plate surface is mounted on the base plate 25 by the positioning holes. A form plate changing robot 10 for automatically performing such mounting action has the base plate engaged by L-shaped hooks of hands 14 and moves the hands 14 to a predetermined position of the plate cylinder 2 where the base plate is to be mounted. In this position, the base plate is positioned upon insertion of the L-shaped hooks into the positioning holes of the plate cylinder to be held by magnetic attraction acting between the ends of the base plate and the plate cylinder. Then, after the L-shaped hooks are turned to a position where engagement of the hooks with the base plate can be released, they are drawn out by moving the hands back. The plate cylinder is rotated to wind the base plate thereon to thereby mount thereto the entire base plate by means of magnetic attraction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an imprinter for printing by imprinting on a part of the text of a printing paper surface, and more particularly to an automatic printing plate for an imprinter with improved ease of replacement and handling of a base plate having a plate surface. Desorption device.

[0002]

2. Description of the Related Art Department stores, supermarkets, convenience stores, car dealers, home electric appliance stores, etc., sell common products in multiple stores and in wide area sales. In such industries, leaflet advertisements common to all stores are often used. When distributing this leaflet advertisement or inserting it into a newspaper or the like for home delivery, the name of the store in the area or an advertisement unique to the store, for example, the sale date and the sale period are imprinted and printed. In the case of imprinting printing on a part of the body of such a leaflet advertisement, the rotary printing press is configured such that an imprinter for imprinting is arranged before and after a color printing unit for printing the body.

For example, in a rotary printing machine in which an imprinter is installed in front of a printing unit, a sheet of paper supplied from a paper roll of a paper feeder is imprinted by passing through the imprinter and then printed in a plurality of printing units. Color, eg 4
The text is printed in color, then the ink is dried with a dryer and then sent to a folder where it is cut and discharged in the form of sheets or signatures.

In a conventional letterpress type imprinter,
To attach the imprinted plate (hereinafter referred to as “press plate”) to the plate cylinder, for example, a method of using a double-sided tape on the plate cylinder surface to attach the plate is used. FIG. 12 shows an example of mounting the printing plate on the plate cylinder. A ruled line 8 for positioning the printing plate 7 is drawn on the plate cylinder 6, and the printing plate is adhered in line with the ruled line 8. The adhering position of this plate is determined by the position of the ad text to be imprinted,
As for the number of printing plates to be prepared, two printing plates 7A and 7B are prepared when there are a plurality of imprinting places, for example, two printing places shown in FIG.

In the case of imprinting a predetermined number of copies of a leaflet advertisement by imprinting different sentences, pictures, etc. for each fixed number of copies, first, the printing plate is adhered to the plate cylinder of the imprinter for printing. When the printing is completed, the rotary printing press is temporarily stopped and the printing plate is peeled off from the plate cylinder. Another plate is then glued in and printing is continued. As the number of imprinted prints increases, the number of times the plates are replaced increases.

[0006]

Since the plate exchange in the method of directly adhering the plate to the plate cylinder of the imprinter must be performed inside the machine, the workability is deteriorated and the plate is prepared in advance. Even if it is done, the process of adhering to the plate cylinder and the process of peeling it off are always included, so if a large number of plate replacements are required, it will take a long time for the work, which will reduce the printing efficiency. It was connected.

After mounting the printing plate, actual imprinting printing is performed to check whether the printing plate is in the correct position. At this time, if the position of the printing plate is misaligned, the printing plate is peeled off again and the positioning is performed again, so that it takes time to replace the printing plate.

Further, even when there are few imprinted portions with respect to the text, since the plate used is the full width size of the plate cylinder, the plate is not effectively used and the plate having a large size is used. Storage space for cost increase and reuse becomes large.

By the way, in a rotary printing press, a plate automatic attachment / detachment device for automatically mounting a plate on a plate cylinder or removing it from the plate cylinder is disclosed in, for example, Japanese Patent Laid-Open No. 62-2717444.
It is disclosed in Japanese Patent Laid-Open No. 62-74654.
However, even if the conventional plate automatic attachment / detachment device can be applied to the plate width of the imprinter with the full width size of the plate cylinder, the plate width of various sizes including the smaller size is accurately placed at the predetermined position of the plate cylinder. It is not designed to be worn or removed from its place of attachment. In the current situation, the plate changing robot and the plate cylinder are installed in a one-to-one relationship with automatic plate replacement, and this type of device has two plate cylinders for one impression cylinder. It cannot be directly applied to the printer.

From such a background, it has been desired to develop an automatic plate removing / mounting device for an imprinter in order to solve a peculiar problem in mounting / dismounting the plate of the imprinter.

An object of the present invention is to provide an automatic plate removing / attaching device for an imprinter which automatically attaches / detaches a base plate having a plate surface including a size smaller than the full width of the plate cylinder of the imprinter.

[0012]

In order to achieve the above object, the present invention provides a plurality of positioning holes in an imprinting plate cylinder having a magnetized outer peripheral surface and fills unused positioning holes with magnetic pins. Along with an automatic plate attachment / detachment device for an imprinter, in which a base plate made of a ferromagnetic material having a plate surface is mounted through a positioning hole, the plate plate is penetrated through an elongated hole of the base plate provided in alignment with the positioning hole of the plate cylinder. It has an L-shaped hook that can be locked by rotating it later,
The L-shaped hook is provided with a plate changing robot which is inserted into the positioning hole of the plate cylinder and then rotated to lock or unlock the base plate. Further, the plate cylinder for imprinter is characterized in that the outer peripheral surface is magnetized or a magnetic sheet is attached to the surface.

The base plate also includes a plate width size smaller than the full width size of the plate cylinder. Further, the plate changing robot is characterized by being applied to a printing unit having two plate cylinders for one impression cylinder.

Further, the hand of the plate changing robot is characterized in that a suction cup for sucking the base plate is provided.

Furthermore, the hand of the plate changing robot is characterized in that it is provided with a plate pressing roller for pressing the base plate against the surface of the plate cylinder.

[0016]

The required number of base plates are prepared according to different imprinting, and the plates are prepared in advance. The unused positioning pin hole of the plate cylinder is filled with a magnet pin. The plate changing robot locks the base plate on the L-shaped hook of the hand and moves the hand to a predetermined mounting position of the plate cylinder. In this position, when the L-shaped hook is inserted into the positioning hole of the plate cylinder, the base plate is positioned and held by magnetic attraction between the plate end and the plate cylinder. Next, the L-shaped hook is rotated to a position where the locking with the base plate can be released, and then the hand is retracted and pulled out. Then, by rotating the plate cylinder and winding the base plate, the whole plate is attached by suction. The replacement of the base plate can be performed by the reverse operation to the above mounting.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an overall configuration diagram of an automatic plate removing / attaching device of an imprinter of the present invention incorporated in a rotary printing press. In the rotary printing machine, the paper 3 supplied from the paper feeder is imprinted and printed through the plate cylinder 2 and the impression cylinder 4 of the imprinter 1 and then the color printing unit 5 of the first stage of the multicolor printing unit prints the first color. Printing is performed.

The plate automatic attachment / detachment device of the imprinter 1 removes the plate changing robot 10 for attaching / detaching the base plate to / from the plate cylinder 2, the stocker 30 for accommodating the base plate, and the base plate from the stocker 30, or for accommodating the stocker 30 in the stocker 30. It is composed of a pickup unit 40 for performing.

The plate changing robot 10 includes a frame 11, an arm 12 supported by the frame 11 and the arm 1.
It is configured by the hand 14 provided on the No. 2.

The frame 11 has an arcuate structure composed of upper and side frames. The frame 11 is arranged in parallel along the longitudinal direction of the plate cylinder 2 of the imprinter 1. A hand feeding mechanism 13 for moving the arm 12 in a suspended state along the frame is provided inside the upper frame.

As shown in FIG. 2, the arm 12 has a base arm 12A connected to the hand feeding mechanism 13, a first arm 12B at the tip of the base arm 12A, and a first arm 12B.
The second arm 12C is axially supported at the tip of the arm 12B. Further, a hand 14 for handling a base plate described later is attached to the second arm 12C. The shaft support portions of the base arm 12A and the first arm 12B are the upper plate cylinder 2
It is located approximately in the middle of A and the lower plate cylinder 2B, and is configured so that the base plate 25 can be attached to and detached from either the upper or lower plate cylinder 2.

As shown in FIG. 3, the hand 14 includes a base portion 14A axially supported by the tip of the second arm 12C and a base plate holding member 14B movably provided in the axial support portion direction of the base portion 14A. There is. The base plate holding member 14B is provided so as to face the plate cylinder 2. In this base plate holding member 14B,
A pair of hook mechanisms 15 are provided at positions along the longitudinal direction of the plate cylinder 2.
Is provided.

In the hook mechanism 15, the mounting portion 15A is fixed to the front surface side of the base plate holding member 14B, and the rotary actuator 16 is arranged on the back surface side of the base plate holding member 14B. As shown in FIG. 4, the rotary shaft of the rotary actuator 16 penetrates the mounting portion 15A, and an L-shaped hook 17 for hooking the base plate 25 is attached to the shaft end thereof. The rotary actuator 16 is, for example, of pneumatic type, and the L-shaped hook 17 and the locking position of the base plate 25 shown by the solid line in FIG.
It is rotated by 0 degrees and is rotated to a lock release position with the base plate 25, which is shown by the diagonal lines in the figure.

A plate pressing roller 18 is arranged on the base plate holding member 14B between the hook mechanisms 15. The plate pressing roller 18 is attached to a piston of a cylinder (not shown) arranged on the back side of the base plate holding member 14B, and presses the base plate 25 positioned on the plate cylinder 2 to magnetically attract it to the surface of the plate cylinder. To ensure that.

A plurality of suction cups 19, for example, four suction cups 19 are provided to suck the base plate 25 hooked on the L-shaped hook 17.

In the stocker 30, a plurality of base plates 25 to which the plates 7 necessary for imprinting of leaflet advertisements prepared in advance are adhered are stored side by side in the order of printing.

The pickup unit 40 is constructed so as to be movable in the arrow direction of the stocker frame 31 which is parallel to the storage direction of the base plate of the stocker 30. This pickup unit 40 is used for the stocker 30.
The base plate 25 is taken out from the plate changing robot 10
The base plate 25 is attached to the hand 14, or the base plate is removed from the hand 14 and stored in the stocker 30 to transfer the base plate 25.

Next, the structures of the plate cylinder and the base plate will be described.

As shown in FIG. 5, the plate cylinder main body 20 has a plate mounting groove 21 formed on the cylinder surface in parallel with the rotation axis, and the magnet sheet 22 is formed on the cylinder surface excluding the plate mounting groove 21.
Are glued together. A positioning hole 23 that penetrates the magnet sheet 22 in the vicinity of the plate mounting groove in the direction opposite to the direction of rotation of the cylinder (a arrow in FIG. 6) and reaches a predetermined depth of the plate cylinder main body 20.
Is provided. The positioning hole 23 is formed to have a hole diameter into which the hook of the hand 14 can be inserted. Further, the positioning holes 23 are provided in a plurality of pairs, for example, three pairs (23A, 23B, 23A, 23B, etc.) depending on the base plate 25 of various sizes and the mounting position of the base plate 25 corresponding to the place for imprint printing.
23C) are arranged at predetermined intervals. As shown in FIG. 7, a magnet pin 24 is provided in the unused positioning hole 23.
Is fitted.

The magnet pin 24 has a permanent magnet 24B fixed to a pin body 24A, and as shown in FIG.
The screw 24C of the pin body is screwed into and attached to the screw 23A of the unused positioning hook hole. At this time, the permanent magnet 2
Since a part of the surface of 4B is substantially flush with the surface of the plate cylinder, the lack of magnetic force on the plate cylinder surface of the magnet sheet 22 due to the positioning holes 23 can be compensated for near the end of the base plate 25, and the base plate 25 is lifted up. To be prevented.

As shown in FIG. 9, the base plate 25 is made of a magnetic material having a necessary minimum plate width sufficiently smaller than the entire width of the plate cylinder and being attracted by the magnetic force of the magnet sheet 22. As shown in FIG. 4, the base plate 25 has a bent portion 25A formed on one side to be inserted and locked in the plate mounting groove 21 of the body, and an L-shaped hook is provided near the bent portion 25A. A pair of long holes penetrating 25B
Is provided. The intervals of the long holes 25B are equal to the intervals of the positioning holes 23 of the plate cylinder, for example, 23A.

Next, the mounting of the base plate on the plate cylinder body will be described. FIG. 10 shows the plate cylinder 2 after the base plate is attached.

A required number of base plates 25 are prepared according to different imprinting printing, and the plates 7A, 7B, ... Are attached in advance and stored in the stocker 30 in the order of printing. The unused positioning hole 23 of the plate cylinder 2 is filled with a magnet pin 24.

The hand 14 of the plate changing robot is moved to the delivery position of the base plate 25. On the other hand, the base plate 25 is taken out of the stocker 30 by the pickup unit 40 and is transported to the delivery position. Here, the hand 14 is passed through the elongated hole of the base plate 25 through the L-shaped hook 17 at the locking release position (see FIG. 9A), and then rotated to the locking position (see FIG. 9B) to be hooked and hung. At the same time, the suction plate 19 sucks and holds the base plate 25. In this state, the hand 14 is moved by the hand feeding mechanism 13 so that the base plate 25 faces the upper plate cylinder or the lower plate cylinder. Next, the L-shaped hook 17 of the hand is inserted into a predetermined positioning hole of the plate cylinder. As a result, the bent portion 25A of the base plate is positioned in the plate mounting groove 21 of the plate cylinder. At this time, the base plate 25 is supported in a state where the vicinity of the bent portion is attracted to the magnet sheet 22 and the magnet pin 24 of the plate cylinder.
After that, the L-shaped hook 17 is turned to the unlocking position and pulled out from the positioning hole 23. Here, the suction action of the suction cup 19 is released, and the base plate holding member 14B is slightly separated from the plate cylinder 2. At the same time, the plate pressing roller 18 is operated to press the base plate 25 against the surface of the plate cylinder. After that, the plate body 2
0 is rotated in the direction of arrow b shown in FIG. 11, the base plate 25 is wound around the plate cylinder 2 while being pressed by the plate pressing roller 18, and the base plate 25 is attracted to and retained by the magnet sheet 22. When the base plate 25 is mounted on the plate cylinder, the pressing of the plate pressing roller 18 is released, and the hand 14 moves to the base plate transfer position.

This sequence operation is programmed in advance according to the type of imprint printing, the position, the number of copies, and the like. By executing this program, the operation of attaching / detaching the base plate to / from the plate cylinder is automatically performed.

To replace the plate, the base plate is removed from the plate cylinder by performing the operation opposite to the above-described mounting operation, and another base plate is mounted as described above.

In this embodiment, a magnet sheet is adhered to the surface of the plate cylinder, but the main body of the plate cylinder itself may be magnetized.

In this embodiment, the plate mounting groove is provided on the plate cylinder, but the plate mounting groove is not necessarily provided. In this case, the base plate having no bent portion is used.

[0039]

As described above, according to the present invention, the plate changing robot is configured to position the plate by inserting the L-shaped hook of the hand hooked in the long hole of the base plate into the positioning hole of the plate cylinder. Therefore, the transfer of the base plate is ensured, and the base plate does not drop off from the hand during movement.

Also, since one plate changing robot can automatically change the base plate for a plurality of plate cylinders, the plate can be replaced quickly and the printing efficiency is improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a plate automatic attachment / detachment device for an imprinter showing an embodiment of the present invention.

FIG. 2 is a side view of an imprinter and a version change robot.

FIG. 3 is a perspective view of a hand of the plate changing robot.

FIG. 4 is a side view of a hook mechanism.

FIG. 5 is a perspective view of a plate cylinder.

6 is a cross-sectional view taken along the line AA of FIG.

FIG. 7 is a diagram showing a state in which the magnet is fitted into a positioning hole of a maggnet pin.

FIG. 8 is a structural diagram of a magnet pin showing a partially broken surface.

9A is a plan view of the base plate, FIG. 9A is a view showing a non-locking state with the L-shaped hook, and FIG. 9B is a view showing a locking state with the L-shaped hook and when the suction cup 19 is in operation. .

FIG. 10 is a perspective view of the plate cylinder when the plate is mounted.

11 is a side view taken along the line BB of FIG.

[Explanation of symbols]

 1 Imprinter 2 Plate Cylinder 3 Paper 5 Printing Unit 7 Plate 10 Plate Change Robot 13 Hand Feed Mechanism 14 Hand 15 Hook Mechanism 17 Hook 18 Plate Pushing Roller 19 Sucker 20 Plate Cylinder Body 22 Magnet Sheet 23 Positioning Hole 24 Magnet Pin 25 Base Plate 30 Stocker 40 pickup unit

Claims (7)

[Claims] 1. An imprinting plate cylinder having a magnetized outer peripheral surface is provided with a plurality of positioning holes, unused positioning holes are filled with magnetic pins, and a base plate made of a ferromagnetic material having a plate surface is attached by the positioning holes. A plate automatic attachment / detachment device for an imprinter, comprising: an L-shaped hook that is locked by rotation after being penetrated into an elongated hole of the base plate provided corresponding to a positioning hole of the plate cylinder, An automatic plate attaching / detaching device for an imprinter equipped with a plate changing robot that inserts the L-shaped hook into a positioning hole of the plate cylinder and then rotates the plate hook to lock or unlock the base plate. 2. The automatic plate removing / attaching device for an imprinter according to claim 1, wherein the imprinter plate cylinder has a magnet sheet attached to the surface of the plate cylinder. 3. The automatic plate removing / attaching device for an imprinter according to claim 1, wherein an outer peripheral surface of the imprinter plate cylinder is magnetized or a magnetic sheet is attached to the surface. 4. The automatic plate mounting / demounting device for an imprinter according to claim 1, wherein the base plate includes a plate width size smaller than the full width size of the plate cylinder. 5. The automatic plate removing / attaching device for an imprinter according to claim 1, wherein the plate changing robot is applied to a printing unit having two plate cylinders for one impression cylinder. 6. The automatic plate removing / attaching device for an imprinter according to claim 1, wherein a hand of the plate changing robot is provided with a suction cup for sucking the base plate. 7. The automatic plate removing / attaching device for an imprinter according to claim 1, wherein the hand of the plate changing robot is provided with a plate pressing roller for pressing the base plate against the surface of the plate cylinder.