JP2001047604A - Automatic press plate fitting and removing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely engage without deforming the angle of the gripping side of a press plate when the press plate is fitted. SOLUTION: An automatic press plate is provided with press mechanisms 39 and 46 for pressing one end 14 of a new press plate 13 to the side opposite to a press plate fitting section 10 of the plate cylinder 9a to bend the press plate 13, and then separating one end side from the press plate 13 and engaging one end side 14 with the press plate fitting section 10 when a new press plate 13 is fitted on a plate cylinder 9a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a printing press,
The present invention relates to a printing plate automatic attachment / detachment device for automatically changing a printing plate mounted on a plate cylinder.

[0002]

2. Description of the Related Art As shown in FIG. 14, a printing unit 7 of a printing press is provided with a plate cylinder 9 for mounting a printing plate 13 on which a pattern to be printed is printed. The ink is supplied from the device to cause the ink to adhere to the picture portion of the printing plate 13. Then, the pattern is transferred to the blanket cylinder 8 by the ink, and the pattern is further transferred to the web 16.
And printing is performed. When printing is completed, plate cylinder 9
Is removed, and a new printing plate 13 for the next printing is mounted on the plate cylinder 9.

Conventionally, the work of removing and mounting the printing plate 13 has been performed manually. However, in recent years, a device has been developed which is automatically attached and detached by a machine, and is now equipped in a printing press. Was. As a known example of such a device, there is a technique disclosed in Japanese Utility Model Laid-Open No. 4-9736, for example. In this technique, as shown in FIGS. 13 and 14, a plate mounting / detaching robot (4-axis robot) 1 having four axes is provided. This printing plate attaching / detaching robot 1 includes:
Normally, the printer stands by on the side of the printing press, and travels inside the machine when the printing plate is attached / detached to attach / detach the printing plate 13.

Here, the operation when the printing plate 13 is mounted on the plate cylinder 9 will be described. When the printing plate 13 is mounted, the suction pad 2 of the printing plate attaching / detaching robot 1 causes the gripping side 1 of the printing plate 13 to be held.
4 is sucked and held, and the plate mounting portion 10 of the plate cylinder 9 is held.
And is locked to the gripping side engaging portion 11. At this time, printing plate 1
The printing plate 13 is inserted into the holding-side engaging portion while matching the shape of the holding-side engaging portion of the plate cylinder 9 with the shape of the holding-side at the time of carrying in the plate 3.

[0005] In the above prior art, by using a multi-axis robot 1 as shown in FIGS.
The operation according to the grip shape of the printing plate 13 was performed when the printing plate was automatically attached and detached. In this device, the first shaft 3 is configured to be able to travel in the machine width direction, and the second shaft 4 and the third shaft
The shaft 5 and the fourth shaft 6 are configured to be operable to correspond to any angle.

[0006]

However, the above technique has an advantage that it can cope with various shapes and states of the printing apparatus, but has a problem that the structure is complicated and expensive. Another known example is disclosed in, for example, JP-A-7-2.
There is a technique disclosed in Japanese Patent No. 90689. In this technique, as shown in FIGS. 15A and 15B, when a new printing plate 13 is held by a revolvable holding / supplying device 17, an actuator 18 is actuated to print on the surface of a plate cylinder 9. The holding side 14 of the plate 13 is pressed by using elasticity, and the plate cylinder 9 is configured to rotate forward in the direction of the arrow. When the plate cylinder 9 rotates and the plate mounting unit 10 reaches the position of the holding side 14 of the printing plate 13, the holding side 1
4 is configured to enter the plate mounting portion 10.
Further, the rotation of the plate cylinder 9 locks the gripping side 14 with the gripping side engaging portion 11 of the plate mounting portion 10.

However, the surface of the plate cylinder 9 is formed to be non-slip so as to prevent the printing plate 13 from shifting during printing, and the printing plate mounting portion 10 holds the holding tail side 15 of the printing plate 13. Since the attachment for attaching to the buttocks side engaging portion 12 is provided, the tip of the gripping side 14 is bent and does not engage with the gripping side engaging portion 11, so that the position of the plate 13 shifts during printing or The plate 13 was sometimes cut.

That is, as shown in FIG. 16B, the gripping side 14 of the printing plate 13 is raised by the resistance of the surface of the plate cylinder 9 and should be the same as the angle θ of the gripping side engaging portion 11. The angle θ1 of the gripping side 14 is larger than the angle θ, and the gripper 14 is mounted in a state as shown in FIG. In this case, when the mounting of the printing plate 13 is completed, as shown in FIG. 16 (a), a raised portion 21 is generated, and the raised portion 21 is repeatedly pressed down by printing, thereby causing plate breakage. Further, since the above-mentioned θ1 does not coincide with θ, the bent portion on the gripping side 14 does not completely match the plate mounting portion 10, and as shown in FIG. May shift.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and as described above, when the printing plate is mounted, the gripping side engagement portion does not deform the gripping side angle of the printing plate. It is an object of the present invention to provide a printing plate automatic attachment / detachment device that engages with a plate.

[0010]

According to the present invention, there is provided an automatic plate attaching / detaching apparatus for automatically exchanging a plate attached to a plate cylinder of a printing press. When a new printing plate is mounted on the plate cylinder, one end of the new printing plate is pressed against the side opposite to the plate mounting portion of the plate cylinder to bend the printing plate. It is characterized in that it is provided with a pressing mechanism for locking the one end side to the printing plate mounting portion so as to be separated from the printing plate.

According to a second aspect of the present invention, there is provided an automatic plate attaching / detaching apparatus for automatically exchanging a plate attached to a plate cylinder of a printing press. A press mechanism for pressing one end of the new plate toward the plate cylinder when a new plate is mounted is provided, and the press plate is bent by the press mechanism, and the press plate is attached to the plate mounting portion of the plate cylinder. One end of the printing plate is pushed in, and then the plate cylinder is rotated, and the pressing mechanism is separated from the printing plate to lock the one end to the plate mounting portion.

According to a third aspect of the present invention, there is provided an automatic plate attaching / detaching apparatus according to the present invention, wherein the one end side of the plate is locked to the plate mounting portion. The printing apparatus further comprises a braking mechanism for generating a braking force against the pulling force when the plate cylinder is rotated and the printing plate is pulled. According to a fourth aspect of the present invention, there is provided an automatic plate attaching / detaching apparatus according to the fourth aspect of the present invention.
The invention is characterized in that the braking mechanism is configured to abut on the back surface of the printing plate.

According to a fifth aspect of the present invention, there is provided an automatic plate attaching / detaching apparatus according to any one of the first to fourth aspects, wherein the one end of the plate is attached to the plate mounting portion. After the side is locked, a press mechanism for pressing the printing plate against the plate cylinder is provided, and the printing plate is attached to the plate cylinder while the printing plate is pressed against the surface of the plate cylinder by the pressing mechanism. It is characterized by having.

According to a sixth aspect of the present invention, there is provided an automatic printing plate attaching / detaching apparatus according to any one of the first to fifth aspects, wherein a plate attached to the plate cylinder is removed. And a guide mechanism for guiding the printing plate into the apparatus main body after the other end of the printing plate is separated from the plate cylinder, wherein the guide mechanism rotates while abutting on the plate cylinder; It is characterized by comprising an actuator for pressing the rotating member against the plate cylinder.

According to a seventh aspect of the present invention, there is provided an automatic plate attaching / detaching apparatus according to the present invention, wherein one end of the plate is detached from the plate cylinder when the plate is removed. A plate detaching mechanism for detaching the plate, the plate detaching mechanism is configured to be switchable between a state in which the plate is held and a state in which the plate is released, and the plate is held in a state in which the plate is held. The printing plate is detached from the plate cylinder by rotating the cylinder.

According to an eighth aspect of the present invention, there is provided an automatic plate attaching / detaching apparatus according to the present invention, wherein one end of the plate is detached from the plate cylinder when the plate is removed. A plate detaching mechanism for detaching the plate, wherein the plate detaching mechanism is configured to be switchable between a state in which the plate is pressed to bend the plate and a state in which the plate is separated from the plate; The printing plate is detached from the plate cylinder by rotating the plate cylinder in a state where the plate is bent.

According to a ninth aspect of the present invention, there is provided an automatic printing plate attaching / detaching apparatus according to any one of the sixth to eighth aspects, wherein the plate is taken into the apparatus main body. A catching mechanism is provided. The catching mechanism includes an actuator, a guide provided along an operation direction of the actuator, and a claw that can be attached to the actuator and lock the other end of the printing plate. When the actuator is actuated, the pawl is guided by the guide and rotated to lock the pawl on the plate, so that the plate is taken into the apparatus main body. It is characterized by being constituted.

According to a tenth aspect of the present invention, there is provided an automatic plate attaching / detaching apparatus according to any one of the sixth to eighth aspects, wherein the plate is taken into the apparatus main body. The printing mechanism includes a take-up mechanism, the take-up mechanism has two rollers that can be separated from and brought into contact with each other, the plate is held between the two rollers, and one of the rollers is driven so that the plate becomes the main body of the apparatus. It is characterized by being configured to be taken in.

According to a eleventh aspect of the present invention, in addition to the configuration of the tenth aspect, at least one of the rollers has a built-in motor. It is a roller with a built-in motor.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (a) Description of a first embodiment A description will now be given of an automatic plate attaching / detaching apparatus according to a first embodiment of the present invention with reference to the drawings.
Are schematic side views for explaining the operation when the printing plate is attached and detached, FIG. 2 is a schematic front view for explaining the operation when the printing plate is attached and detached, and FIGS. 4A to 4E are schematic side views for explaining in detail the operation at the time of removing the old version, and FIGS. 4A to 4E are schematic side views for describing the operation at the time of attaching the new version in detail. Side view, FIG. 5
FIG. 2 is a schematic perspective view partially showing the configuration. In the following, the same parts as those of the above-described conventional one are denoted by the same reference numerals in the drawings, and overlapping description will be omitted.

In FIGS. 1A to 1C and FIG.
Denotes a printing unit (printing machine), 8a and 8b denote blanket cylinders for transferring a pattern onto the web 16, and 9a and 9b denote printing plates 13 on which a printed pattern is baked (see FIGS. 3A to 3D).
, Of which the upper and lower printing cylinders 8a and 9a are respectively an upper blanket cylinder and an upper printing cylinder for printing the upper surface of the web 16, and 8b and 9b are a lower blanket cylinder and a lower printing cylinder. .

Reference numeral 20 denotes a plate exchange device which is arranged to prepare for the next operation at the standby position shown in FIG. 2 during printing, and to move to the exchange position to perform the exchange operation when the plate is exchanged. ing. Further, the plate exchange device 20 is configured to be movable between a standby position shown in FIG. 2 and a plate exchange position on the traveling route of the web 16, and up to the plate exchange position as shown in FIG. It moves in the state shown.

Here, the plate changing device 20 includes an upper plate changing device 20a for attaching and detaching the printing plate 13 wound around the upper plate cylinder 9a, and a printing plate wound around the lower plate cylinder 9b. Edition 13
And a lower plate exchange device 20b for attaching and detaching the lower plate. Each plate changing device 20a, 20b is configured to be rotatable to a predetermined plate changing angle shown in FIG. 1B by an air cylinder (not shown) or the like.
It is configured to be extendable to a predetermined plate exchange position shown in (c).

By the way, these upper plate exchange devices 20
a and the lower plate exchange device 20b have the same configuration except that the attachment position is different. For this reason, the following description focuses on the upper plate exchange device 20a, mainly of the upper plate exchange device 20a and the lower plate exchange device 20b. Further, each plate exchange device 20a, 20b
As shown in FIGS. 3A to 3D, the old plate holding device 24 for removing the plate 13 (old plate) currently mounted on the plate cylinder 9a, and then the new plate 13 (new plate) are transferred to the plate cylinder. 9a. Therefore, the configuration and operation of the old version holding device 24 will be described first, and then the configuration and operation of the new version holding device 43 will be described.

Now, as shown in FIGS. 3 (a) to 3 (d),
An actuator 45 is provided below the plate cylinder 9a, and a plate pressing roller (rotating member) 26 is rotatably provided at the tip of the actuator 45. The plate holding roller 26, the actuator 45, etc.
A guide mechanism is configured to guide the printing plate 13 into the main body of the automatic printing plate removing device when the printing plate 13 is removed.

Further, the old plate holding device 24 is provided with two guides 32 and 34. The mounting device (not shown) is loosened and the holding edge side (other end side) 15 of the old plate 13 is removed from the plate cylinder 9a. When the plate cylinder 9a is reversed in the direction of the arrow shown in FIG. 3A, the printing plate 13 is guided by the two guides 32 and 34 so as to be introduced into the space between these two guides 32 and 34. It has become.

As shown in FIG. 3 (a), the plate changing device 20a includes an actuator 28 having a guide roller 27 rotatably supported at the tip thereof. A printing plate releasing mechanism for releasing the printing plate 13 from the plate cylinder 9a is constituted by 28. That is, when the actuator 28 operates, the guide roller 27 is pushed up to the bar 31, as shown in FIG. 3C, and the printing plate 13 is sandwiched between the bar 31 and the guide roller 27. At this time, the plate pressing roller 26 is separated from the surface of the plate cylinder 9a by moving the actuator 45 downward, and the printing plate 13 is continuously rotated in the reverse direction. The plate cylinder 9a is pushed outward along the tangential direction of the plate cylinder 9a and detaches from the plate mounting portion 10 (see FIG. 3C).

The old plate holding device 24 is provided with a take-in mechanism for taking the printing plate 13 removed from the plate cylinder 9 a into the old plate holding device 24.
The take-in mechanism mainly includes a hook (claw portion) 22, a guide 33, and an actuator 30. A guide 33 is fixedly mounted on the outer cylindrical portion of the actuator 30 as shown in FIG.
A hook 22 is attached to a tip portion of the device via a pin 23. The hook 22 is urged by a torsion spring (not shown) so that a rotational force acts clockwise around the pin 23 which is the center of rotation. When the actuator 30 is retracted, the end face 36 of the hook 22 is brought into contact with the guide 33. In contact therewith, the hook 22 rotates about 90 degrees counterclockwise against the urging force of the torsion spring. And
When the actuator 30 is further retracted, the end surface 36 of the hook 22 moves rightward in the figure with the end surface 36 in contact with the lower surface of the guide 33.

The tip of the hook 22 is formed so as to be able to engage with the edge (the other end) 15 of the printing plate 13, and as shown in FIG. As a result, the holding edge 15 of the printing plate 13 is hooked on the hook 22, and the actuator 30 is further contracted, so that the printing plate 13 is drawn rightward in the drawing. Therefore, the old edition 13 is removed by the old edition holding device 24 configured as described above in the following manner. First, the plate cylinder 9a is stopped at the attachment / detachment position, and FIG.
As shown in (1), the actuator 45 is actuated to press the printing plate 13 on the plate cylinder 9a with the plate pressing roller 26, and the holding device (not shown) of the attached front plate 13 is loosened and the mounting device (not shown) is removed.

Next, the plate cylinder 9a is reversed in the direction shown by the arrow in FIG. Then, the printing plate 13 comes out in the tangential direction of the plate cylinder 9a as shown by a two-dot chain line in FIG. It is introduced into the old version holding device 24 between the guides 34. When the state shown in FIG. 3C is reached, the guide roller 27 is pushed up to the bar 31 by the actuator 28, and the printing plate 13 is nipped between the bar 31 and the guide roller 27, and at the same time, the plate holding roller is pressed. 26 moves downward and separates from the surface of the plate cylinder 9a. When the plate cylinder 9a continues to rotate in the reverse direction, the printing plate 13 is pushed out in the tangential direction of the plate cylinder 9a along the inclined shape of the gripping side 14 and detaches from the plate mounting portion 10, and as shown in FIG. The state shown by the chain line is obtained.

Next, when the actuator 30 is retracted (moves rightward in the drawing), the hook 22 is
Is rotated in the counterclockwise direction, and the edge 15 of the printing plate 13 is locked by the hook 22. Then, due to such contraction of the actuator 30, the hook 22 further moves rightward, and the printing plate 13 is pulled in. The guide roller 27 is moved downward by the actuator 28 at the same time when the actuator 30 starts to retract, whereby the printing plate 13 held between the guide roller 27 and the bar 31 is released.

As described above, the printing plate (old plate) 13 is accommodated in the old plate holding device 24, and the removal of the used printing plate 13 is completed. Next, the configuration and operation of the new plate holding device 43 that supplies a new printing plate 13 will be described with reference to FIGS. The new plate holding device 43 is provided below the old plate holding device 24 as shown in FIG.
The old plate holding device 24 is separated from the old plate holding device 24 by a guide 34.

The new plate holding device 43 has suction pads 41a and 41b as a braking mechanism, and sucks and holds a new plate 13 by these suction pads 41a and 41b at the standby position shown in FIG. (New version) is mounted on the plate cylinder 9a. As shown in FIG. 5, a roller follower 4 rotatably supported on the front and rear of a frame 43a on both sides outside of the new plate holding device 43 is provided.
The roller follower 4 is provided along a guide 37 provided on a main body side plate of the plate exchange device 20a.
7 is guided.

As shown in FIG. 4A, a pin 48 is provided at the rear end of the frame 43a.
And the rod end of the actuator 38 are rotatably connected. Further, the actuator 38 has a cylinder rear end rotatably supported by the plate changing device 20a by a pin 38a. Therefore, when the actuator 38 is operated, the new plate holding device 43 moves back and forth. At this time, since the roller follower 47 moves while being guided by the guide 37, the new plate holding device 43 moves upward while moving forward.

By the way, as shown in FIG.
A bracket 43b is fixed to 3a, and a lever 46 is rotatably supported on the bracket 43b via a pin 40. Also, at one end of the lever 46,
The plate pressing roller 44 is rotatably supported, and the other end of the lever 46 is rotatably connected to the tip of an actuator 39. By the operation of the actuator 39, the lever 46 is centered on the pin 40. It is designed to rotate. And mainly these actuators 3
9, a lever 46, a bracket 43b, a pin 40, and a plate pressing roller 44 constitute a pressing mechanism.

On the other hand, as shown in FIG. 4A, the holding side 14 of the printing plate 13 held by the new plate holding device 43
The plate press roller 44 protrudes forward from the suction pad 41a, and when the actuator 39 is operated, the plate holding roller 44 presses the printing plate 13 in front of the suction pad 41a.
3 and so on. FIG.
7A and 7B show a state in which the protruding portion is pressed by the plate pressing roller 44, and the front end of the printing plate 13 is bent downward. When the plate press roller 44 separates from the printing plate 13, the printing plate 13 is restored (straightened) by its own elastic force, and the printing plate mounting portion 1 is restored.
The holding side 14 of the printing plate 13 enters at 0 and is locked.

Further, a pressing mechanism for pressing the printing plate 13 against the plate cylinder 9 after the holding side 14 is locked to the plate mounting portion 10 is provided. It can be attached to the plate cylinder while being pressed against. This pressing mechanism is configured using the above-described guide mechanism, and includes the plate pressing roller 26 and the actuator 45.

Therefore, when the plate 13 is mounted on the plate cylinder 9a, the plate cylinder 9a is stopped at the plate exchange position as shown in FIG.
The actuator 38 is actuated in a state where the plate press roller 44 presses the plate holder 3 to push the whole new plate holding device 43 forward. Thereby, the plate exchange device 20a is in the state shown in FIG.

Then, as shown in FIG.
When the gripper side 3 is positioned on the printing plate mounting portion 10 and the rod of the actuator 39 is operated to retract in this state, the plate holding roller 44 is separated from the printing plate 13 and FIG. The state shown in c) is obtained. At this time, the gripping side 14 of the printing plate 13 is restored by its own elastic force and enters the printing plate mounting portion 10 to be in a state shown in FIG.

In this state, when the plate cylinder 9a is rotated in the forward direction indicated by the arrow in FIG.
Comes into contact with the gripping side engaging portion 11 of the plate cylinder 9a, and when the plate cylinder 9a further rotates, the printing plate 13 is brought into contact with the suction pads 41a, 41a.
Since the printing plate 13 is held by b, the printing plate 13 is pulled in a state where tension is applied. When such a tension (braking force) is applied to the printing plate 13, the gripping side 14 of the printing plate 13 is moved by the wedge action to the gripping side engaging portion 11 of the plate cylinder 9a.
Fit into.

When the plate cylinder 9a is rotated by a predetermined angle after the gripping side 14 is fitted into the gripping side engaging portion 11 of the plate cylinder 9a, the actuator 45 is operated, and the surface of the plate cylinder 9a is moved by the plate pressing roller 26. It is suppressed. At this time, the suction force of the suction pad 41b is released, and when the plate cylinder 9a is further rotated, the suction force of the suction pad 41a is also released, and the printing plate 13 is released.
Is released.

When the plate cylinder 9a makes a full rotation, the plate side 1
5 enters the printing plate mounting section 10 and, while being pressed by the plate pressing roller 26, activates a plate mounting device (not shown) and tightens the rear side 15 to complete plate mounting. Then, the actuator 45 is operated to operate the plate pressing roller 2.
6 is separated from the surface of the plate cylinder 9a. Printing plate 1
3 is completed. After the attachment / detachment of the printing plate 13 is completed,
The plate changing device 20 is retracted from the position shown in FIG. 1 (c) to the state shown in FIG. 1 (b).
0 rotates to the state shown in FIG. Thereafter, the printing plate 13 is moved from the exchange position shown in FIG. 2 to the standby position, and a series of exchange operations of the printing plate 13 is completed.

As described above, in the automatic plate attaching / detaching apparatus according to the first embodiment of the present invention, when the new printing plate 13 is mounted, the gripping side 14 of the new printing plate 13 being held is set. After being deflected by the plate press rollers 44 and approaching the plate mounting portion 10 of the plate cylinder 9a, the plate press rollers 44 are separated and restored by the elastic force of the plate 13 itself.
The holding side 14 of the printing plate 13 enters the printing plate mounting section 10.
From this state, the suction pads 41a, 41
When the plate cylinder 9a is rotated in the forward direction while holding the suction force of 1b, the gripping side 14 of the printing plate 13 bites into the gripping side engaging portion 11 of the printing plate mounting portion 10 by the wedge action and is securely engaged. .

Thereafter, the plate is held down by the plate pressing roller 26 and mounted, so that a floating portion as in the prior art does not occur. Therefore, the leading end of the gripping side 14 is not deformed on the surface of the plate cylinder 9a, and it is possible to prevent the plate from shifting or being cut in the printing state. Further, since the gripping side 14 can be engaged with the gripping side engaging portion 11 with a simple plate holding roller 44, the plate gripping side 14 can be mounted with a device having a relatively simple configuration, and it is inexpensive and reliable. An automatic printing plate attaching / detaching device can be provided.

When the printing plate 13 is removed, the printing plate 13 wound around the plate cylinder 9a can be easily removed along the tangential direction of the plate cylinder by a guide mechanism including the plate pressing roller 26 and the actuator 45. Can be. The plate cylinder 9a is rotated in the reverse direction while holding the plate 13 by the plate detachment mechanism including the guide roller 27 and the actuator 28, so that the gripping side 15 of the plate 13 can be easily removed from the plate mounting portion 10. be able to.

Further, by configuring the capturing mechanism with the hook 22, the guide 33, and the actuator 30, the capturing mechanism can be made inexpensive and simple. Therefore, the cost of the entire apparatus can be reduced, and the reliability is improved. (B) Description of Second Embodiment Next, a description will be given of an automatic plate attaching / detaching apparatus according to a second embodiment of the present invention. FIGS. 7 is a schematic side view for performing
8A to 8E are schematic front views for explaining the operation when removing the printing plate, and FIGS. 8A to 8E are schematic side views for explaining the operation when removing the old plate in detail. FIG.
(A) to (e) are schematic side views for describing in detail the operation when the new version is attached.

6 (a), 6 (c) and FIG.
Denotes a printing unit (printing machine), 8a and 8b denote blanket cylinders for transferring a pattern onto a web 16, 9a and 9b denote plate cylinders on which a printing plate 13 having a printed pattern printed thereon is wound, and among these, 8a and 9a 8b and 9b are upper blanket cylinders and upper plate cylinders for printing the upper surface of the web 16, respectively.
b is a lower blanket cylinder and a lower plate cylinder.

Further, reference numeral 20 denotes a plate exchange device, which prepares for the next operation at a standby position shown in FIG. 7 during printing, and moves to the exchange position to perform an exchange operation when the plate is exchanged. ing. The plate exchange device 20 is configured to be movable between a standby position shown in FIG. 7 and a plate exchange position on the traveling route of the web 16, and up to the plate exchange position as shown in FIG. It moves in the state shown.

Here, the plate changing device 20 includes an upper plate changing device 20a for attaching and detaching the printing plate 13 wound around the upper plate cylinder 9a, and a printing plate wound around the lower plate cylinder 9b. Edition 13
And a lower plate exchange device 20b for attaching and detaching the lower plate. Each plate changing device 20a, 20b is rotatable to a predetermined plate changing angle shown in FIG. 6B by an air cylinder (not shown) or the like, and stops at a predetermined plate changing position. Is configured.

The upper plate replacing device 20a and the lower plate replacing device 20b have the same configuration except that the mounting positions are different. For this reason, in the following, the upper plate changing device 20a and the lower plate changing device 20
The description will be made focusing on the upper plate exchange device 20a, mainly. Further, each plate exchange device 20a, 20b is configured as shown in FIG.
As shown in (a) to (d), the old plate holding device 24 for removing the printing plate 13b (old plate) currently mounted on the plate cylinder 9a.
And a new plate holding device 43 for attaching a new printing plate 13a (new plate) to the plate cylinder 9a thereafter. Therefore, the configuration and operation of the old version holding device 24 will be described first, and then the configuration and operation of the new version holding device 43 will be described.

Now, as shown in FIGS. 8A to 8D,
An actuator 45 is provided below the plate cylinder 9a, and a plate pressing roller (rotating member) 26 is rotatably provided at the tip of the actuator 45. The plate holding roller 26 and the actuator 45 constitute a guide mechanism for guiding the plate 13b into the main body of the automatic plate attaching / detaching device when the plate 13b is removed.

The old plate holding device 24 is provided with two guides 132 and 133, and the plate mounting device (not shown) of the plate cylinder 9a is loosened so that the holding edge side (other end side) 15 of the old plate 13b is placed on the plate. After removing the plate cylinder 9a from the cylinder 9a,
When the printing plate 13b is reversed in the direction of the arrow shown in FIG.
The two guides 132 and 133 are guided and introduced into a space between the two guides 132 and 133.

As shown in FIG. 8A, the plate changing device 20a includes a driving roller 131 and a discharge roller 130.
The printing plate 13 removed from the plate cylinder 9a by the drive roller 131 and the discharge roller 130, etc.
A capturing mechanism for further capturing “b” into the old version holding device 24 is configured. The take-in mechanism also has a part of the function of a plate detaching mechanism described later.

The discharge roller 130 is rotatably supported, and is configured to be attached to and detached from the drive roller 131 by the operation of an actuator (not shown). That is, the assembling side 15 of the plate 13b is connected to the plate cylinder 9a.
When the actuator (not shown) is actuated after being removed from the roller, the discharge roller 130 is pressed against the drive roller 131 as shown in FIG.
The printing plate 13b is sandwiched between 131. At this time, the printing plate 13b can be taken in by driving the drive roller 131. The feed speed of the drive roller 131 is set to be equal to or higher than the surface speed of the plate cylinder 9a, and when the printing plate 13b is driven by both the plate cylinder 9a and the drive roller 131, the drive roller 131 is driven. Slip is allowed at the holding portion of the.

Here, the drive roller 131 is configured as a motor built-in type roller as shown in FIG. 8 (e). The driving and stopping of the drive roller 131 is controlled by a control device (not shown).
By controlling the driving state of the drive roller 131 while holding the plate 13b, the plate 13b can be taken in or braked.

As shown, an actuator 128 is provided below the plate 13b. The base end of the actuator 128 is attached to the frame of the plate changing device 20a, and the center (bending portion) of a substantially L-shaped lever 127R is rotatably connected to the rod end of the actuator 128. I have. A pin 127P protrudes from the frame of the plate changing device 20a, and one end of a lever 127R is rotatably connected to the pin 127P. A guide roller 127 is rotatably supported at the other end of the lever 127R.

Therefore, the guide roller 127 is moved by the expansion and contraction operation of the actuator 128 so that the pin 127 is moved.
In this case, the guide roller 127 mainly moves up and down. And, mainly, these actuator 128 and lever 12
The plate release mechanism for releasing the plate 13b from the plate cylinder 9a is constituted by the 7R, the pin 127P, and the guide roller 127. The plate detaching mechanism also has a function as a pressing mechanism in a new plate holding device 43 described later, which will be described later in detail.

Then, as shown in FIG.
When the grip side (one end side) 3b of the plate cylinder 9a is at a position suitable for detachment from the plate mounting portion 10 of the plate cylinder 9a, the actuator 45 is retracted and the plate pressing roller pressed against the plate cylinder 9a. 26 is detached from the plate cylinder 9a, and at this time, the drive of the drive roller 131 is stopped.
The guide roller 127 is pressed against the printing plate 13b by the actuator 128 to bend the printing plate 13b. Then, in this state, the plate cylinder 9a continues to reversely rotate in the direction of the arrow in the figure, so that the gripping side 14 of the printing plate 13b is pushed outward in the radial direction of the plate cylinder 9a along the slope shape, and FIG. As shown in (c) and (d), the printing plate 13b is detached from the printing plate mounting unit 10.

Therefore, the old edition 13 is removed by the old edition holding device 24 configured as described above in the following manner. First, the plate cylinder 9a is stopped at a predetermined attachment / detachment position, and as shown in FIG.
5, the printing plate 13b on the plate cylinder 9a is pressed by the plate pressing roller 26, and the gripping side 15 of the mounted old plate 13 is loosened and removed from the printing plate mounting device (not shown) of the plate cylinder 9a.

Next, the plate cylinder 9a is reversed in the direction shown by the arrow in FIG. At this time, the printing plate 13b comes out in the tangential direction of the plate cylinder 9a as shown by a two-dot chain line in FIG.
It is introduced into the old version holding device 24 through the space between the guides 132 and 133 shown in FIG. Here, the printing plate 13b
The holding butt 15 has a driving roller 131 and a discharging roller 130.
And the discharge roller 130 is driven by the driving roller 1
31 to hold the printing plate 13b,
1 is driven to assist in discharging the printing plate 13b.

Then, the plate cylinder 9a is rotated substantially one revolution, and FIG.
When the state shown in (c) is reached, the actuator 128 is operated to press the guide roller 127 against the printing plate 13b, thereby deforming (deflecting) the printing plate 13b. When the plate pressing roller 26 is moved downward in this state, the plate 13b is separated from the surface of the plate cylinder 9a due to the deformation of the plate 13b. At the same time, the driving of the drive roller 131 holding the printing plate 13b is stopped, so that a braking force is applied to the printing plate 13b. In this state, if the plate cylinder 9a continues to rotate in the reverse direction, the printing plate 13b is pushed outward in the radial direction of the plate cylinder 9a along the slope of the holding side 14, and the printing plate mounting portion 1
0, and the state shown by the two-dot chain line in FIG.

Next, the guide roller 127 is returned to the original position by the actuator 128, and the driving of the driving roller 131 is restarted. As a result, the printing plate 13b sandwiched between the discharge roller 130 and the driving roller 131 is further taken in and stored in the old plate holding device 24, and when the state shown in FIG. 8D is reached, the driving roller 131 is stopped. Then, the removal of the printing plate 13b used up to that point is completed.

Next, the structure and operation of the new plate holding device 43 for supplying a new printing plate 13a will be described with reference to FIGS. 9A to 9E. It is provided below the holding device 24. Also,
As shown in FIG. 9A, the new plate holding device 43 is provided with the actuator 1 installed on the frame of the plate changing device 20a.
A suction pad 41 as a braking mechanism is rotatably connected to the rod end of the actuator 138. Further, the suction pad 41 is used for the printing plate 13.
A plurality is provided in the width direction of a.

Then, the printing plate 1 is moved by the suction pad 41.
3a is held by suction, and the printing plate 13a is moved back and forth by the expansion and contraction operation of the actuator 138. As shown in the figure, the suction pad 41 comes into contact with the back surface of the printing plate 13a, thereby preventing the picture of the printing plate 13a from being damaged. Also, when changing the plate,
At the standby position shown in FIG. 7, a new printing plate 13a is already suction-held by the suction pad 41, and the printing plate (new plate) 13a is quickly mounted on the plate cylinder 9a.

The holding side 14 of the printing plate 13a is
After the plate 13a is held by the suction pad 41 even after the plate 13a is engaged with the plate mounting portion 10, the braking force acts on the plate 13a and the plate 13a is pulled. I have. The new plate holding device 43 is provided with a pressing mechanism. This holding mechanism is an old version holding device 2
4, the actuator 128 and the lever 1
27R, a pin 127P, and a guide roller 127. The guide roller moves up and down when the actuator 128 expands and contracts.

As shown in FIG. 9A, the holding side 14 of the printing plate (new plate) 13a held by the new plate holding device 43 projects forward from the suction pad 41, and the actuator 138 is actuated. By doing so, the gripping side 14 of the printing plate 13a approaches the plate cylinder 9a as shown by the solid line. Then, in this state, the guide roller 127 is driven upward at the timing when the protruding portion (the holding side 14 of the printing plate 13a) and the printing plate mounting portion 10 of the plate cylinder 9a coincide with each other, thereby obtaining FIG. As shown in a two-dot chain line in FIG. 9A and FIG. 9B, the printing plate 13a is pushed upward and bent so as to be warped, and the gripping side 1 of the printing plate 13a is bent.
4 is pushed into the plate mounting portion 10 of the plate cylinder 9a.

When the leading end of the gripping side 14 is pushed into the plate mounting portion 10, as shown in FIG. 9 (e), the rotational force of the plate cylinder 9a, the braking force by the suction pad 41, the slope shape of the gripping side 14, and the like. As a result, the holding side 14 of the printing plate 13a is
Of the plate cylinder 9a.
The engaging portion 11 is securely engaged with the holding side engaging portion 11.

The new plate holding device 43 has the printing plate 13a
Is pressed against the plate cylinder 9a. This pressing mechanism is configured using the guide mechanism described in the configuration and operation of the old plate holding device 24 described above, and includes the plate pressing roller 26 and the actuator 4.
It has five. Then, after the gripping side 14 is locked to the plate mounting portion 10, the press plate 13a is pressed by the pressing mechanism.
Is attached to the plate cylinder 9a while being pressed against the surface of the plate cylinder 9a.

Therefore, when the plate 13 is mounted on the plate cylinder 9a, as shown in FIGS. 9A and 9B, the plate 13a is held by the suction pad 41, and the actuator 138 is operated in this state. Then, the printing plate 13a is pushed forward. When the plate mounting portion 10 of the plate cylinder 9a, which is rotating forward in the direction of the arrow in the drawing, comes to a predetermined position (plate replacement position), the actuator 128 is operated in synchronization with this, and the guide roller 127 The holding side 14 of the printing plate 13a is pressed.

Then, by bending the printing plate 13a from the state shown by the solid line in FIG. 9A to the state shown by the two-dot chain line, the state shown in FIGS. 9B and 9E is obtained. As a result, as the plate cylinder 9a rotates in the forward direction, the gripping side 14 is further pushed into the plate mounting portion 10, and the gripping side 14 of the plate 13a is inserted into the gripping side engaging portion 11 by the rotational force of the plate cylinder 9a. Engage.

On the other hand, since the printing plate 13a is held by the suction pad 41, the printing plate 13a is pulled while sliding between the printing plate 13a and the suction pad 41. Therefore, a braking force acts on the printing plate 13a by the action of the suction pad 41, and this acts as a tension (tensile force) on the printing plate 13a. Then, the printing plate 13 is moved by the tension.
9 (c), by pressing the printing plate 13a against the plate cylinder 9a by the plate holding roller 26 after the actuator 45 is extended after the gripping side 14 of the plate a is securely engaged with the gripping side engaging portion 11 of the plate cylinder 9a. ). In the state shown in FIG. 9C, the printing plate 13a is wound around the plate cylinder 9a by the plate pressing roller 26, so that the suction force of the suction pad 41 is cut off, and the guide roller 127 holding the printing plate 13a is moved to the actuator. Then, the new plate holding device 43 is returned to the original position by retracting the actuator 138 to return to the state shown in FIG. 9D.

Further, when the plate cylinder 9a is rotated in the forward direction in the direction of the arrow and makes one revolution, the gripping side 15 of the plate enters the plate mounting portion 10 and the plate cylinder 9a is shown as being pressed by the plate pressing roller 26. The plate mounting device not to be operated is operated, and the butt side 15 is tightened. Finally, the actuator 45 is operated to separate the plate pressing roller 26 from the surface of the plate cylinder 9a.

Thus, the installation of the new printing plate 13a is completed. After the plate 13 has been attached and detached, the plate exchange device 2
In FIG. 6A, the plate changing device 20a rotates from the position shown in FIG. 6B to the state shown in FIG. Thereafter, the printing plate 13 is moved from the exchange position shown in FIG.
Is completed. As described above, the second aspect of the present invention
In the automatic plate removing device according to the embodiment, the new plate 13
When the plate cylinder 9a is mounted, the plate cylinder 9a is rotated in the forward direction indicated by an arrow in FIGS. 9A to 9D, and a new printing plate 13a held for mounting is brought close to the plate cylinder 9a. At the timing when the plate mounting portion 10 of the plate cylinder 9a comes to the mounting position,
The guide roller 127 is pressed against the printing plate 13a. Then, the printing plate 13 a is bent by the pressing force at this time, and the gripping side 14 enters the printing plate mounting unit 10.

In this state, when the plate cylinder 9a rotates in the forward direction while holding the suction force of the suction pad 41 of the new plate holding device 43, the gripping side 14 of the printing plate 13a is moved by the wedge action to the gripping side of the printing plate mounting portion 10. It bites into the engaging portion 11 and is securely engaged. Thereafter, the plate 13a is wound around the plate cylinder 9a while pressing the plate 13a with the plate pressing roller 26, thereby preventing the occurrence of a floating portion as in the related art. Therefore,
The leading end of the gripping side 14 is not deformed on the surface of the plate cylinder 9a, and it is possible to prevent the plate from shifting or being cut during printing.

Further, the guide roller 127 holds the holding side 14
Can be engaged with the holding side engaging portion 11,
A relatively simple and inexpensive plate automatic attachment / detachment device can be provided. When removing the printing plate 13b, the printing plate 13b wound around the plate cylinder 9a can be easily removed along the tangential direction of the plate cylinder by the guide mechanism including the plate pressing roller 26 and the actuator 45.

The plate cylinder 9 is held while holding the plate 13b by a plate releasing mechanism mainly composed of the actuator 128, the lever 127R, the pin 127P, and the guide roller 127.
By reversely rotating a, the gripper side 15 of the printing plate 13 can be easily removed from the printing plate mounting portion 10. Further, the printing plate 13 is removed from the printing plate mounting unit 10 by rotating the plate cylinder 9a in the reverse direction while holding and holding the printing plate 13 by a take-in mechanism including a driving roller 131 and a discharge roller 130 and appropriately driving and stopping the printing plate. The gripper side 15 can be easily housed in the old version holding device 24. In addition, the capturing mechanism can be configured simply and inexpensively, so that the cost of the entire apparatus can be reduced and the reliability is improved.

Further, by forming the driving roller 130 using a roller with a built-in motor, there is an advantage that the size of the apparatus can be reduced. (C) Description of Third Embodiment Next, an automatic plate removing device according to a third embodiment of the present invention will be described. FIGS. 10 (a) to 10 (e) show details of the operation when removing the old plate. 11 (a) to 11 (d) are schematic side views for explaining in detail the operation when the new version is attached.

In the third embodiment, the second
The configuration of the plate separating mechanism (pressing mechanism) is different from that of the embodiment. That is, in the second embodiment, the guide roller 127 constituting the plate detaching mechanism is configured to abut from the surface side of the plate 13 to press the plate 13. In the embodiment, the guide roller 127 is used.
Are pushed back from the back side of the printing plate 13.

First, differences between the configuration and operation of the old version holding device 24 and the second embodiment will be described, and then differences between the configuration and operation of the new version holding device 43 and the second embodiment will be described. As shown in FIG. 10 (e), the printing plate (old plate) 13b has a surface on the outer side when it is wound around the plate cylinder 9a, which is a “front surface” on which a printing pattern is printed, and the printing plate 9a.
Is the "back surface".

Here, as shown in FIGS. 10 (a) to 10 (d), the normal standby position of the guide roller 127 constituting the plate separating mechanism is located on the front side of the plate 13 in the second embodiment. In contrast, in the present embodiment, it is set on the back side. In other respects, the configuration is the same as that of the plate release mechanism of the second embodiment. Therefore, as shown in FIG. 10C, when the gripping side 14 of the printing plate 13b is removed from the printing plate mounting portion 10 of the plate cylinder 9, as shown in FIG. 127 is lowered, and the back side of the printing plate 13b is pushed down by the guide roller 127 to remove the holding side 14. The rest is the same as the second embodiment.

Next, the difference between the structure and operation of the new plate holding device 43 for supplying the new printing plate 13a from the second embodiment will be described with reference to FIGS. 11 (a) to 11 (d). As in the case of the holding device 24, the normal standby position of the guide roller 127 constituting the pressing mechanism is set to the front side of the printing plate 13a in the second embodiment, but is set to the back side in the present embodiment. Have been.

A guide 134 is provided behind the guide roller 127. This is because, as shown in FIG. 11A, when the actuator 138 operates and the printing plate 13a is pushed forward by the new plate holding device 43, the posture of the printing plate 13a is indicated by a two-dot chain line in the drawing. However, this is to prevent the plate cylinder 9a and the printing plate 13a from colliding with each other.

That is, before the actuator 138 is actuated to push the new plate holding device 43 forward, the actuator 128 is actuated to bring the guide roller 127 to the position where the solid line printing plate 13 is depressed. Is moved forward, the gripping side 14 of the printing plate 13a is guided by the guide 134 and the guide roller 127 so as to be in a state shown by a solid line.

With the above arrangement, the printing plate 13a is transferred to the plate cylinder 9a.
When the plate roller 13 is lowered, the guide roller 127 is lowered to make the printing plate 13a protrude forward, and the guide roller 127 is moved at the timing when the plate mounting portion 10 of the plate cylinder 9a rotating in the forward direction comes to the mounting position. Returning to the original position (standby position) indicated by the two-dot chain line in FIG. 11A, the printing plate 13a is brought into the state indicated by the two-dot chain line. Thereby, the printing plate mounting unit 10 and the printing plate 13a
With the grip side.

Thereafter, the printing plate 13a is mounted according to the procedure shown in FIGS. 11B to 11D. The mounting operation in this case is the same as that of the second embodiment, and therefore the description is omitted. I do. The guide roller 127 may be a fixed rod. Since the printing plate automatic attachment / detachment device according to the third embodiment of the present invention is configured as described above, the same operation and effect as those of the second embodiment can be obtained, and a pressing mechanism (guide roller 127 and guide 134). Is in contact with the back surface of the printing plate 13, so that there is no danger of damaging the printed pattern of the printing plate 13. (D) Description of Fourth Embodiment Next, a description will be given of a printing plate automatic attaching / detaching device according to a fourth embodiment of the present invention. FIG. 12 is a schematic side view showing a main part thereof.

The fourth embodiment differs from the second embodiment only in the structure of the braking mechanism, and is otherwise the same as the second embodiment. Therefore,
Hereinafter, the braking mechanism will be mainly described, and other description will be omitted. By the way, in the second embodiment described above, the suction pad 41 as a braking mechanism has a function of sucking and holding the new plate 13a and a function of applying a braking force to the new plate 13a. , The functions of suction and braking are independently configured.

That is, as shown in FIG. 12, in the present embodiment, the suction pad 41 and the suction body 13 serve as a braking mechanism.
6 are provided, the suction pad 41 is formed of a relatively soft material, and the suction body 136 is formed of a highly rigid material that hardly deforms. The suction hole 136 is provided on the side of the suction body 136 that contacts the printing plate 13a.
37 are provided.

The automatic plate attaching / detaching apparatus according to the fourth embodiment of the present invention is configured as described above.
The performance of absorbing the printing plate 13a can be improved by performing the suction of the printing plate 13a by a somewhat flexible pad 41, and the deformation of the suction pad 41 during braking can be prevented stably by providing the suction body 136 separately. There is an effect that power can be applied.

The automatic plate mounting / removing device of the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the spirit of the present invention. For example, the braking mechanism of the fourth embodiment may be applied to the first embodiment.

[0090]

As described above in detail, according to the automatic plate attaching / detaching apparatus of the present invention, one end side of the plate is pressed and bent by the pressing mechanism to utilize the elasticity of the plate. By doing so, there is an advantage that the end of the printing plate can easily and reliably enter the engaging portion of the plate cylinder. Further, according to the present apparatus, there is an advantage that the printing plate can be automatically attached with a simple configuration, and an inexpensive and reliable printing plate automatic attaching / detaching device can be provided.

Further, according to the printing plate automatic attaching / detaching device of the present invention, one end side of the printing plate is pressed by the pressing mechanism toward the plate cylinder side to bend, thereby utilizing the elasticity of the printing plate. In addition, there is an advantage that the end of the printing plate can easily and reliably enter the engaging portion of the plate cylinder. Further, according to the present apparatus, there is an advantage that the printing plate can be automatically attached with a simple configuration, and an inexpensive and reliable printing plate automatic attaching / detaching device can be provided.

According to the third aspect of the present invention, when the plate is mounted, tension is applied to the plate by the braking mechanism, and the end of the plate is moved by the wedge action. There is an advantage that the engaging portion of the plate can be engaged with the engaging portion of the plate cylinder so that the end of the printing plate can reliably engage with the engaging portion of the plate cylinder. Further, according to the printing plate automatic attaching / detaching device of the present invention, when the printing plate is attached, the braking mechanism is configured to contact the back surface of the printing plate, so that the picture of the printing plate is damaged. There is an advantage that high quality printing can be ensured without such problems.

According to the printing plate automatic attaching / detaching device of the present invention, since the printing plate is attached while pressing the printing plate against the surface of the plate cylinder by the pressing mechanism, a floating portion unlike the related art is not generated. There is an advantage. Thus, there is an advantage that the printing plate is not deformed on the surface of the plate cylinder, and it is possible to prevent the printing plate from being shifted or cut in the printing state.

According to the printing plate automatic attaching / detaching device of the present invention, after the other end of the printing plate is detached from the plate cylinder, the plate cylinder is reversely rotated while pressing the rotating member against the plate cylinder. This has the advantage that the printing plate wound around the plate cylinder can be easily removed along the tangential direction of the plate cylinder. According to the printing plate automatic attaching / detaching device of the present invention, when the printing plate is removed, the plate cylinder is rotated in the reverse direction while holding the printing plate. There is an advantage that the other end of the plate can be easily detached.

Further, according to the printing plate automatic attachment / detachment device of the present invention, when removing the printing plate, the printing plate is mounted by a simple operation of rotating the plate cylinder in a state where the printing plate is bent. There is an advantage that the other end side of the printing plate can be easily detached from the section. Further, according to the printing plate automatic attachment / detachment device of the present invention, the printing plate can be reliably taken into the apparatus main body by the taking-in mechanism when the printing plate is removed. At this time, in the loading mechanism, when the actuator operates, the claw portion is guided by the guide and rotates to lock the claw portion on the printing plate, and the printing plate is taken into the apparatus body by further operating the actuator. Therefore, when removing the printing plate, the printing plate can be reliably taken into the apparatus main body with a simple configuration.

According to the printing plate automatic attaching / detaching device of the present invention, the printing plate can be reliably taken into the apparatus main body by the taking-in mechanism when the printing plate is removed.
At this time, in the loading mechanism, the printing plate is held by two rollers that can be separated from and brought into contact with each other, and the printing plate is loaded into the apparatus main body by driving one of the rollers. Therefore, when removing the printing plate, the printing plate can be reliably taken into the apparatus main body with a simple configuration.

Further, according to the printing plate automatic attaching / detaching device of the present invention, since at least one of the rollers is constituted by a roller with a built-in motor, a light and compact take-in mechanism is provided. be able to. Further, there is an advantage that the printing plate can be reliably taken into the apparatus main body with a simple configuration.

[Brief description of the drawings]

FIGS. 1A to 1C are schematic side views for explaining the operation of the automatic plate attaching / detaching apparatus according to the first embodiment of the present invention when the plate is attached / detached.

FIG. 2 is a schematic front view for explaining the operation of the automatic plate attaching / detaching apparatus according to the first embodiment of the present invention when the plate is attached / detached.

FIGS. 3A to 3D are schematic side views illustrating the operation of the automatic plate removing device according to the first embodiment of the present invention when the old plate is removed.

FIGS. 4A to 4E are schematic side views illustrating the operation of the automatic plate attaching / detaching apparatus according to the first embodiment of the present invention when a new plate is attached.

FIG. 5 is a schematic perspective view partially showing a configuration of the automatic plate attaching / detaching apparatus according to the first embodiment of the present invention.

FIGS. 6 (a) and 6 (b) are schematic side views for explaining the operation of the automatic plate attaching / detaching apparatus according to the second embodiment of the present invention when the plate is attached / detached.

FIG. 7 is a schematic front view for explaining the operation of the automatic plate attaching / detaching apparatus according to the second embodiment of the present invention when the plate is attached / detached.

FIGS. 8A to 8E are schematic side views illustrating the operation of the automatic plate removing device according to the second embodiment of the present invention at the time of removing the old plate.

FIGS. 9A to 9E are schematic side views for explaining in detail the operation of the automatic plate attaching / detaching device according to the second embodiment of the present invention when a new plate is attached.

FIGS. 10A to 10E are schematic side views for describing in detail the operation of the automatic plate removing device according to the third embodiment of the present invention when the old plate is removed.

FIGS. 11A to 11D are schematic side views for explaining in detail the operation of the automatic plate attaching / detaching device according to the third embodiment of the present invention when a new plate is attached.

FIG. 12 is a schematic side view illustrating a main part of an automatic plate attaching / detaching device according to a fourth embodiment of the present invention.

FIG. 13 is a diagram for explaining a conventional technique.

FIG. 14 is a diagram for explaining a conventional technique.

FIG. 15 is a diagram for explaining a conventional technique.

FIG. 16 is a diagram for explaining a conventional technique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Printing plate attaching / detaching robot 2 Suction pad 3 1st axis 4 2nd axis 5 3rd axis 6 4th axis 7 Printing unit 8a, 8b Blanket cylinder 9a, 9b Plate cylinder 10 Plate mounting part 11 Gripper side engaging part 12 Gripper Butt side engaging portion 13, 13a, 13b Plate 14 Holding side (one end side) 15 Holding side (other end side) 16 Web 17 Holding / supplying device 18, 38 Actuator 20 Plate changing device 20a Upper plate changing device 20b Lower plate exchange device 21 Floating portion 22 Hook (claw portion) constituting capture mechanism 23, 40, 48 Pin 24 Old plate holding device 25 New plate holding device 26 Plate holding roller (rotating member) constituting a pressing mechanism and a guide mechanism 27) Guide Roller Constituting Plate Detachment Mechanism 28 Actuator Constituting Plate Detachment Mechanism 30 Constructing Capture Mechanism Actuator 41, 41a, 41b suction pad (braking mechanism) 43 New plate holding device 44 Plate pressing roller 45 Pressing mechanism and guide mechanism Actuator 46 that constitutes the pressing mechanism 47 roller that constitutes the pressing mechanism 47 roller follower 127 guide roller that constitutes the plate detaching mechanism and the pressing mechanism 128 actuator that constitutes the plate releasing mechanism and the pressing mechanism 130 discharge roller 131 that constitutes the taking-in mechanism 131 taking-in mechanism Drive rollers 132 to 134 constituting guide 136 Suction body (braking mechanism) 137 Suction hole 138 Actuator

Claims (11)

[Claims] 1. A printing plate automatic attaching / detaching device for automatically changing a printing plate attached to a plate cylinder of a printing press, wherein when a new printing plate is mounted on the plate cylinder, the new printing plate is removed. A pressing mechanism that presses one end side of the plate cylinder to the opposite side of the plate mounting portion to bend the printing plate, and then separates from the printing plate and locks the one end side to the plate mounting portion. An automatic printing plate mounting device, characterized in that it is provided. 2. A printing plate automatic attaching / detaching device for automatically exchanging a printing plate attached to a plate cylinder of a printing press, wherein when a new printing plate is mounted on the plate cylinder, the plate is automatically replaced. A press mechanism for pressing one end side of the plate cylinder against the plate cylinder; bending the plate by the press mechanism to push one end of the plate into a plate mounting portion of the plate cylinder; An automatic plate mounting device, wherein the press mechanism is separated from the plate and the one end side is locked to the plate mounting portion. 3. When the plate cylinder is rotated and the printing plate is pulled in a state where the one end side of the printing plate is locked in the printing plate mounting portion, a braking force against the pulling force is generated. 3. The printing plate automatic attachment / detachment device according to claim 1, further comprising a braking mechanism. 4. The automatic plate mounting apparatus according to claim 3, wherein said braking mechanism is configured to abut on a back surface of the plate. 5. A pressing mechanism for pressing the printing plate against the plate cylinder after the one end side of the printing plate is locked to the printing plate mounting portion, and the pressing mechanism presses the printing plate to the surface of the printing drum. The printing plate automatic attachment / detachment device according to any one of claims 1 to 4, wherein the printing plate is attached to the plate cylinder while being pressed against the plate cylinder. 6. A guide mechanism for guiding the printing plate into the apparatus body after the other end of the printing plate is detached from the plate cylinder when removing the printing plate attached to the plate cylinder. The mechanism according to any one of claims 1 to 5, wherein the mechanism includes a rotating member that rotates while abutting on the plate cylinder, and an actuator that presses the rotating member against the plate cylinder. The automatic plate attaching / detaching device as described in the above. 7. A printing plate releasing mechanism for releasing one end of the printing plate from the plate cylinder when removing the printing plate, wherein the printing plate releasing mechanism holds the printing plate in a state where the printing plate is clamped. The printing plate is configured to be switchable to a release state, and is configured to be detached from the plate cylinder by rotating the plate cylinder while holding the printing plate. 7. The automatic plate attaching / detaching device according to claim 6. 8. A plate detaching mechanism for detaching one end of the plate from the plate cylinder when removing the plate, the plate detaching mechanism pressing the plate to bend the plate. The printing plate is configured to be switchable between a curling state and a state separating from the printing plate, and is configured to separate the printing plate from the plate cylinder by rotating the plate cylinder in a state where the printing plate is bent. The printing plate automatic attachment / detachment device according to claim 6, wherein: 9. An apparatus according to claim 9, further comprising a take-in mechanism for taking the printing plate into the apparatus main body, wherein the take-in mechanism is provided with an actuator, a guide provided along an operation direction of the actuator, and And a claw that can lock the other end of the plate. The claw is engaged with the plate by the guide being rotated by the guide when the actuator is operated. 9. The apparatus according to claim 6, wherein the printing plate is stopped so as to be taken into the apparatus main body.
Automatic plate mounting and dismounting device according to the item. 10. A printing apparatus comprising a take-in mechanism for taking the printing plate into the apparatus main body, the taking mechanism having two rollers which can be separated from and brought into contact with each other, and holding the printing plate between the two rollers. The printing plate automatic attachment / detachment device according to any one of claims 6 to 8, wherein the printing plate is taken into the apparatus main body by driving one of the rollers. . 11. The automatic plate mounting / removing apparatus according to claim 10, wherein at least one of said rollers is a motor built-in roller having a motor built therein.