JPH0211428B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic plate changing device.

There are generally two types of printing units in paper processing machines: top printing and bottom printing.In both cases, the conventional top printing shown in Figure 1 is used to attach and remove the printing plate sheet from the printing cylinder. As in the example of this method, the printing section 2 and paper feeding section 2a are separated from the paper discharging section 1, space is secured for attaching the printing plate sheet 3 to the printing cylinder 4, and then everything is done manually. It's been coming. The outline of this work procedure is as follows.

First, the installation work of the printing plate sheet 3 will be explained. It is inserted into the mounting groove S of the printing cylinder 4 shown, and the front end of the printing plate sheet 3 is mounted on the printing cylinder 4.

(a) Next, operate the push button switch (not shown) to rotate the printing cylinder 4 in the direction of the arrow.

(c) Next, wrap the printing plate sheet 3 around the printing cylinder 4 with one hand.

(D) Next, fit the trailing plate 7 of the printing plate sheet 3 into the groove e of the printing cylinder 4 (FIG. 3A).

(e) Further turn the tightening shaft 8 shown in FIG. It is finally tightened by the claws 10. In addition, the second
5 in the figure is a printing plate.

Next, the operation for removing the printing plate sheet 3 will be explained. (a) First, remove the claw 10 in the state shown in FIG. 3B from the claw wheel 9.

(a) Next, turn the tightening shaft 8 in the opposite direction of the arrow to loosen the printing plate sheet 3 (the state shown in Fig. 3a), and remove the back stop plate 7.

(c) Next, while turning the printing cylinder 4 in the opposite direction to the arrow in FIG. 1, unwind the printing plate sheet 3 from the rear side.

(d) Furthermore, remove the front stop plate 6 from the groove s of the printing cylinder 4, and remove the printing plate sheet 3.

However, the conventional methods described above generally have the following drawbacks. That is, in preparation for replacing the printing plate sheet 3, it was necessary to move the printing section 2 and paper feed section 2a from the paper discharge section 1 shown in FIG. 1 from the chain line position to the solid line position. Also, printing plate sheet 3
All replacements had to be done manually, and it was also necessary to return the freed printing section 2 and paper feeding section 2a to the chain line positions as described above, so it took a lot of effort and time to restart operation. There were flaws.

The present invention was proposed to solve the above-mentioned conventional drawbacks, and the distance can be expanded and contracted by an elastic body.
A printing plate with a mounting jig attached to the front and rear ends each having an inwardly facing anchor-like engagement part, and a chain with a V-shaped beam on which the mounting jig for the printing plate is suspended are mounted on both sides in an almost horizontal position. In addition, the chain is provided with a drive mechanism capable of rotating the same chain, and is engaged with the V-shaped beam to sequentially feed the printing plates arranged in order in advance to a predetermined position, and in the case of a collection operation, the same as described above is provided. A presetting device that performs reverse operation, a chain located above the presetting device that moves up and down, and having an upper claw and a lower claw on the chain capable of engaging the printing plate mounting jig; a printing plate carrier that receives the printing plate held on the V-shaped beam by upper and lower claws, conveys it to a predetermined position above the printing plate unit, and performs a reverse operation to the above in the case of a collection operation; A claw band having an anchor-shaped cross section that can be engaged with the mounting jig is provided on the circumference, and the claw band receives the printing plate from the printing plate carrier, and performs the reverse operation in the case of a collection operation. A printing cylinder having a receiving roll and a groove that can be engaged with a printing plate mounting jig, into which the printing plate is delivered from the receiving roll, and which performs a reverse operation in the case of a collection operation; It has a printing plate changing device equipped with a feeding cam device that moves the receiving roll up and down, and printing plate sheets that need to be replaced one after another can be preset in advance in a cartridge type at any location outside the machine, and the preset printing plate sheets can be It is an object of the present invention to provide an automatic printing plate changing device that can be automatically attached to and removed from a printing cylinder in sequence with the help of cylinders by simply operating a push button.

The present invention will be explained below with reference to the embodiments shown in the drawings.
FIG. 4 is a perspective view showing a state in which a special mounting jig is attached to the conventional printing plate sheet 3 in order to automatically attach and detach printing plates to the apparatus according to the embodiment of the present invention. Fifth
The figure shows a preset device 1 for storing printing plate sheets 3 in an orderly manner according to the order in which they will be used that day.
6 is shown. FIG. 6 shows a printing plate conveying device 41 for conveying the printing plate sheet 3 from the preset 16 to the printing plate changing device 18. Note that the printing plate carrier 17 on the left side of FIG. 6 is shown in a sectional view taken along line B-B in FIG. 7.

FIG. 7 is a side view of the printing plate conveying device 41, FIG. 8A is a front view of the printing plate changing device 18, and D to D in FIG.
A cross-sectional view is shown. FIG. 9 shows a front view of the printing plate changing device 18, the printing plate conveying device 41 and the presetting device 16. FIG. 10 is a state diagram when the printing plate sheet 3 is fed from the printing plate carrier 17 to the presetting device 16, and FIG.
6 shows a state diagram when feeding the printing plate to the printing plate carrier 17.

The apparatus according to the embodiment of the present invention described above is comprised of a printing plate sheet 3 having a special jig, a presetting device 16, a printing plate carrier 17, and a printing plate changing device 18, as shown in FIG. First, as shown in FIG. 4, a mounting jig 14 that fits onto the front stopper plate 6 of the conventional printing plate sheet 3 is connected to a rubber band 13, and the other end of the rubber band 13 has an anchor-shaped protrusion. Mounting jig 1 with
It is combined with 2. Also, the trailing plate 7 of the printing plate sheet 3
is fitted into a mounting jig 15 having an anchor-shaped protrusion similar to the mounting jig 12 described above.

Next, the preset device 16 shown in FIG. 5 has casters 19 attached to the four corners of its lower surface to make it movable. Further, a U-shaped handle 20 is provided at the lower center portion, and a hook 22 attached to the front end of the cylinder 21 is connected to the parallel portion 2 of the U-shaped handle 20.
0' and can be detachably connected to it.
The cylinder 21 is rotatably supported by a support member 24.

Further, at the upper part of the preset device 16, a shaft 25,
25' is rotatably mounted on a shaft, and sprockets 26, 26' are mounted on the same shaft.
As shown in FIG. 5B, the one-way clutch 27
5' and the same direction clutch 2
A sprocket 36 is fixed to the side surface of the sprocket 7. The sprocket 26, which is rotatably mounted, is connected to the sprocket 26' by a chain 29.
is connected to.

At one end of the special attachment 30 provided on the chain 29, there is a V for suspending the printing plate sheet 3.
A character-shaped beam 31 is rotatably attached, and a cuff lower 32 is attached to the other end. Also, the track 3 provided inside the preset device 16
3 and 33', the cuffor lower 32 is held between them. Furthermore, at the bottom of the preset device 16,
A sprocket 34 is provided rotatably,
The sprocket 34 is connected to the sprocket 36 by a chain 35.

38 is a cylinder, and the rod end 37 of the cylinder 38 is connected to the chain 35 via point a in FIG. 5 so that the sprocket 36 can be rotated manually. Further, the lower end of the cylinder 38 is connected to the frame 11 by a support member 40.
Fixed to 0. As a result, one reciprocating movement of the cylinder 38 causes the sprocket 26' to rotate clockwise by a certain angle.

Further, as shown in FIG. 6, the printing plate conveying device 41 is made up of a track lifting device 42 and a printing plate conveying carrier 17. 43 is a track, an inverted L-shaped beam 44,
It is suspended from the end of 44'. Inverted L-shaped beam 44,
The vertical portion 44'' of the frame 79 of the printing section 2
It is slidably fitted into a support beam 45 provided on the upper end surface of the support beam 45 . Further, a piston rod 47 is connected to a pin 46 provided on the side surface of the inverted L-shaped beam 44.
The cylinder 48 is fixed to the support beam 45. Rack 49 fixed to the other side
is a shaft 50 mounted between the support beams 44, 44'.
It meshes with pinions 51, 51' provided at the ends of.

Next, in FIG. 7, wheels 53 rotatably provided on the frame 52 come into contact with the inner surface of the flange of the I-shaped track 43, allowing the printing plate carrier 17 to run along the surface of the track 43. ing. A rack 54 is fixed to the bottom surface of the flange portion of the raceway 43, and a pinion 55 is provided at a position that meshes with the rack 54. A motor 56 connected to the pinion 55 is connected to the frame 52.
It is fixed to the bottom plate 57 of.

Further, as shown in FIG. 6, a fulcrum 58 is provided at the center of the bottom surface of the frame 52.
A frame 59 is rotatably attached to the frame 59. Rotary drive shafts 61, 61' are rotatably mounted on the upper part of the frame 59 through a support base 60, one end of which is connected to a drive motor 62, 62', and the other end is connected to a universal drive motor 62, 62'. The rotational drive shafts 64, 6 of the adjacent carrier 17' are connected via joints 63, 63'.
4'.

Further, a cylinder 65 is fixed to the bottom surface of the support stand 60, and a support beam 67 is attached to the lower end of the piston rod 66, and sprockets 68 and 69 are rotatably mounted in one groove of the support beam 67. It is set in. The rotational drive shaft 61, 6
Sprockets 70 and 70' are installed on 1', respectively, and a frame 5 is attached as shown in FIG.
A sprocket 71 is also rotatably attached to the lower part of the sprocket 9. And these sprocket 6
8, 69, 70, 70', 71 are chain 72,
72'.

As shown in the printing plate carrier 17' on the right side of Figure 6,
An upper claw 73 is attached to the chain 72, and a lower claw 74 is attached to the chain 72', and these are attached to the anchor-like protrusions 1 of the mounting jigs 12 and 15 of the printing plate sheet 3.
2', 15'. The printing plate carrier 17 shown on the left side of FIG. 6 is shown in a sectional view taken along line B-B in FIG. 7, and the piston rod 66 of the cylinder 65 is shown in an unextended state. Further, the stamp carrier 17' shown on the right side of FIG. 6 is a view taken in the direction of arrow C in FIG.

Next, as shown in FIG. 8, the printing plate changing device 18 is comprised of a feed cam device 75, a receiving roll 76, a printing cylinder 77, and a respective drive device 78. And in the frame 79 of the printing section 2,
A cam shaft 80 is rotatably mounted on a shaft, and a plurality of cam claws 83 consisting of a rear end claw portion 81 and a front end claw portion 82 are mounted on the shaft. Further, a gear 84 is provided at the end of the shaft, and the gear 84
A gear 85 meshing with the motor 87 is connected via a coupling 86 to a motor 87 . The motor 87 is fixed on the frame 79 by a support stand 88. Further, a pulse transmitter 89 for detecting the rotational position is attached to the other end of the camshaft 80.

The receiving roll 76 is mounted parallel to the camshaft 80 between frames 79, 79, and its shaft end 76
6' is rotatably supported by an eccentric bearing 90. Further, the eccentric bearing 90 is rotatably attached to the frame 79. Furthermore, a fan-shaped gear 91 is geared on the eccentric bearing 90, and the fan-shaped gear 91 meshes with a pinion 93 that is mounted parallel to the receiving roll 76 and has a pinion shaft 92 at its end.

A shaft end of the pinion shaft 92 is connected to a motor 95 via a coupling ring 94 . motor 95
At the other end, there is a pulse oscillator 96 for detecting rotational position.
is installed. Further, by rotating the motor 95, the gap between the receiving roll 76 and the printing cylinder 77 can be adjusted. A gear 97 is connected to the shaft end of the receiving roll 76, and a gear 98 that meshes with the gear 97 is connected to a motor 100 via a clutch 99. motor 100
is fixed to the frame 79 by a support stand 88. Further, a pulse oscillator 101 for detecting the rotational position is attached to the other shaft end of the receiving roll 76.

On the other hand, the outer circumference of the receiving roll 76 or the printing cylinder 7
The receiving roll 76 rotates once for every rotation of the printing cylinder 77. Also, the receiving roll 76
A claw band 102 having an anchor-shaped cross section is fixed to the outer periphery of the plate, and the anchor shape has a shape that can be engaged with the mounting jigs 12 and 15 of the printing plate sheet 3.

The printing cylinder 77 is axially mounted parallel to the receiving roll 76 and rotatably supported by a frame 79, and the gear 10 is connected to the shaft end of the printing cylinder 77.
2' and the rotor portion 103' of the clutch 103 are rotatably supported. The rotor part 103' is the gear 10
2', and the armature portion 103'' engages with the shaft end of the printing cylinder 77. Therefore, the transmission of driving force from the printing cylinder 77 to the receiving roll shaft 76 can be attached and detached. A pulse transmitter 104 for detecting the rotational position is attached to the other shaft end.

A gear 105 that meshes with the gear 102' is rotatably mounted on the frame 79, and
It is connected to a motor 107 via a clutch 106. The motor 107 is fixed to the frame 79 by a support member 108. On the other hand, the outer peripheral surface of the printing cylinder 77 is provided with a groove 109 having a shape capable of engaging with the projections 12'', 15'' of the printing plate mounting jigs 12, 15.

Next, the effect will be explained. First, the operation of collecting the printing plate sheet 3 from the printing plate carrier 17 to the presetting device 16 will be explained. As shown in FIG. 9, the printing plate carrier 17 stops at a fixed position on a predetermined track 43 above the presetting device 16. The cylinder 48 is activated and the track 43 is moved to the position shown by the two-dot chain line in FIG. descend until

Further, the V-shaped beam 31 of the presetting device 16 is waiting at the position i shown in FIG. The upper claw 73 and lower claw 74 that are holding the plate are lowered, and the printing plate sheet 3 is also lowered. When the lower pawl 74 passes to the left side of the sprocket 69, the lower pawl 74 disengages from the printing plate mounting jig 12, continues to move, and is attached to the sprocket 69.
Stop and wait when the vehicle passes point 9 in the right direction.

V waiting at the position i shown in FIG.
When the mounting jig 12 passes on the right side of the letter-shaped beam 31, the air cylinder 65 is activated and the sprocket 69 is lowered. As a result, rear printing plate mounting jig 1
A guide surface is formed that allows the V-shaped beam 31 to easily engage with the V-shaped beam 31. The position of the sprocket 69 at this time is the position shown by the two-dot chain line in FIG.

When the upper claw 73 passes on the right side of the V-shaped beam 31, the printing plate sheet 3 is engaged with and held by the V-shaped beam 31, and the upper claw 73 continues to move and reaches the right side of the sprocket 69. When this happens, the motor 62 stops and the pawl 73 stops moving. The position of the printing plate sheet 3 at that time is shown by the two-dot chain line in FIG. After that, the air cylinder 65 operates again, and the sprocket 6
8 and 69 return from the position shown by the two-dot chain line to the position shown by the solid line in FIG. 10, and the collection of the printing plate sheet 3 to the presetting device 16 is completed.

Next, the printing plate carrier 17 is transferred from the preset device 16.
To explain the operation of carrying the printing plate sheet 3 into the preset device 1 in the position shown in FIG.
6 is moved to the position shown in FIG. 11 by the pulling action of the cylinder 21, and at the same time, the V-shaped beam 31 suspending the printing plate sheet 3 is moved to the position j in FIG. and hold it in place.

Next, the drive motors 62 and 62' for the upper claw 73 and lower claw 74 of the printing plate carrier 17, which were waiting in the upper part, are activated simultaneously, and the upper claw 73 and the lower claw 74 are lowered to the first position.
When reaching positions k and l shown by solid lines in FIG. 1, they are stopped and held. Next, air cylinder 6
5 is operated, and the sprocket 69 moves from the position shown by the solid line in FIG. 11 to the position shown by the two-dot chain line.

Next, the drive motor 6 for the upper claw 73 and lower claw 74 is operated again.
2 and 62' move, the upper pawl 73 and the lower pawl 74 move, and when the upper pawl 73 passes the left side of the sprocket 26, the upper pawl 73 and the printing plate mounting jig 1 move.
2 engage, and the printing plate sheet 3 begins to rise at the same speed as the upper claw 73. As the lower claw 74 continues to rise, when it reaches point m in FIG. 11, only the lower claw 74 stops and maintains that position.

As the upper claw 73 and the printing plate sheet 3 continue to rise, the rear printing plate mounting jig 1 is removed a few centimeters before the point n in Fig. 11.
5 engages with the lower claw 74, and when the upper claw 73 further rises, the rubber band 13 provided on the printing plate sheet 3 stretches, and tension acts uniformly on the printing plate sheet 3. In such a state, the upper claw 73 reaches point n in FIG. 11 and is stopped and held.

Therefore, since tension is applied to the printing plate sheet 3, the printing plate sheet 3 is prevented from shifting when the printing plate carrier 17 is moved from the presetting device 16 to the printing plate changing device 18. Then air cylinder 6 again
5 is operated, and the sprocket 69 moves from the position shown by the two-dot chain line in FIG. 11 to the position shown by the solid line. The above operations complete the conveyance of the printing plate sheet 3 from the presetting device 16 to the printing plate carrier 17.

Next, the presetting device 1 using the printing plate carrier 17
6 to the printing unit 2 will be explained. Now, when the cylinder 48 operates, the ninth
Trajectory 43 in the position indicated by the two-dot chain line in the figure
rises to the position shown by the solid line in FIG. Next, the drive motor 56 provided on the printing plate carrier 17' is activated, and the printing plate carrier 17 moves from right to left on the track 43 in FIG. 9 to a predetermined position P on the printing unit 2. It will stop automatically when it reaches. Its position is shown by the broken line in FIG.

Next, the operation of collecting the used printing plate sheet 3 from the printing plate changing device 18 to the printing plate carrier 17 will be explained.As shown in FIG. 7, the sprocket 69 is lowered by the operation of the air cylinder 65, It moves to the position shown in and stops. At that position, the center of the camshaft 80 and the center of the sprocket 69 are aligned on the horizontal line.

Next, the receiving roll 76 and the printing roll 77 are moved to the twelfth
Roll the receiving roll 7 until it reaches the position shown in Figure C.
6 and printing cylinder 77 are simultaneously rotated by motor 100. At this time, the clutch 103 is connected to the gear 102', the clutch 106 is released, and the clutch 99 is in the connected state.

Next, by operating the motor 95 and rotating the eccentric gear 90 via the pinion 93, the receiving roll 76 is raised from the position shown by the solid line in FIG. 12C to the position shown by the two-dot chain line. Further, by the operation of the motor 100, only the receiving roll 76 is rotated to the left, and then the receiving roll 76 is lowered by an operation opposite to that when the receiving roll 76 is raised. At this time clutch 10
3. Clutches 106 are both in the released state and clutch 99 is in the connected state. Receiving roll 7 at this time
6 is shown by the broken line in FIG. 12C.

Next, in the clutch state, the motor 100 is operated to rotate only the receiving roll 76 clockwise until it reaches the position shown by the two-dot chain line in FIG. 12B. When the motor 95 is further activated to raise the receiving roll 76,
The state shown by the solid line in FIG.
It is completely removed from the protrusion 9.

Next, connect the clutch 103 to the gear 102',
With the clutch 106 released and the clutch 99 connected, the motor 100 is operated again to move the receiving roll 7.
6. Rotate the printing cylinder 77 at the same time, and
02 until it reaches the position shown in FIG. 12A and then stopped. Before reaching this state,
By operating the motor 87, the camshaft 80 is retracted from the position shown by the solid line in FIG. 12A to the position shown by the two-dot chain line.

Next, the motor 87 is operated to move the rear end claw part 81, which has been retracted to the position shown by the two-dot chain line, to the receiving roll 7.
Rotate clockwise at the same speed as the outer peripheral speed of 6. At the moment when the rear printing plate mounting jig 15 and the rear end claw part 81 are engaged, the receiving roll 76 and the printing cylinder 77 are moved by the motor 1.
It is rotated by the operation of 00. From this moment on, the claw band 102 of the receiving roll 76 disengages from the rear mounting jig 15, and the rear mounting jig 15 moves along the camshaft 80. In the above state, the camshaft 80, receiving roll 76, and printing cylinder 77 continue to rotate, and when the rear mounting jig 15 reaches the position shown by the solid line in FIG. Stop.

Next, the upper claw 73, which was in the q position in Fig. 12A,
Due to the operation of the motor 87, the receiving roll 76 rotates clockwise at the same speed as the circumferential speed of the outer peripheral surface, and when it engages with the rear mounting jig 15 at the r position, at that moment the receiving roll 76 and the printing cylinder, which had been stopped until then, rotate clockwise. 77 rotates at the same speed, the rear mounting jig 15 disengages from the rear end pawl 81 of the camshaft 80, and begins to rise along the chain 72 of the carrier 17'.

On the other hand, the rear end claw portion 81 that has disengaged from the rear mounting jig 15 rotates to the left by the operation of the motor 87 in preparation for the next engagement with the front mounting jig 12, and then
They are waiting at positions 81' and 82' indicated by two-dot chain lines in FIG. Similarly, the claw portion 102 of the receiving roll 76, which has disengaged from the rear mounting jig 15, engages with the front mounting jig 12 of the printing plate sheet 3, and rotates with the movement of the rotating printing cylinder 77. And nail band 10
2 reaches the S position in FIG. 13B, the motors 87 and 100 stop, and the movement of the claw band 102 also stops.

Next, after releasing the clutch 103 that has been connected until now and disconnecting it from the printing cylinder 77, only the receiving roll 76 is rotated clockwise by the operation of the motor 100.
It stops at the position shown by the solid line in FIG. 13B. Furthermore, the receiving roll 76 is lowered by the operation of the motor 95 and waits at a position where it can be engaged with the front mounting jig 12.

Next, the clutches 103 and 106 are connected, the clutch 99 is released, and the motor 107 is operated, so that only the printing cylinder 77 rotates to the left, and the front mounting jig 12 engages with the protrusion of the groove 109 of the printing cylinder 77. The mounting jig 12 and the claw band 102 are disconnected from each other.
and become engaged. The rotation of the printing cylinder 77 is stopped when the groove 109 reaches the position shown by the solid line from the position shown by the two-dot chain line in FIG. 13B. Then, the receiving roll 76 is raised again by the operation of the motor 95, and the engagement is completely removed. This state is the 13th
Shown in Figure B.

Subsequently, when the clutches 106 and 103 are released and the clutch 99 is connected to operate the motors 100 and 62, the rear mounting jig 15 of the printing plate sheet 3 rises again along the chain 72, and the front mounting jig 12 reaches the position shown by the two-dot chain line in FIG.
2, and the front end claw portion 8 of the camshaft 80
2, the front mounting jig 12 moves along the camshaft 80.

On the other hand, the claw band 102 disengaged from the front mounting jig 12 stops when it reaches the position shown by the two-dot chain line in FIG. 13A. While the front mounting jig 12 is moving along the camshaft 80, the rear pawl 74 is rotated clockwise from the t position shown in FIG. , Stop and wait.

Next, when the front mounting jig 12 reaches the position shown by the solid line in FIG. It disengages from the use claw portion 82, engages with the rear claw 74, and rises together with it. On the other hand, the disengaged front end claw portion 82 continues to rotate 180 degrees to the left, then stops, and waits for the next printing plate sheet 3 to be attached and processed. Further, the upper claw 73 and the lower claw 74, which are rising together with the printing plate sheet 3, stop together when the upper claw 73 reaches the upper limit, and the collection of the used printing plate sheet 3 is completed.

Next, the operation of attaching the printing plate sheet 3 will be explained. Since this operation is entirely the reverse operation of the collecting operation of the printing plate sheet 3, detailed explanation will be omitted. Note that this operation is sequentially shown in FIG. 14 A, B, C, and D. Each process is carried out in the order shown in FIG. 14A, B, C, and D, and the installation of the printing plate sheet 3 is completed in FIG. 14D.

Since the present invention is configured as described above in detail, it is not necessary to open the frames of the printing section and the paper feeding section to take up work space each time a printing plate is replaced, compared to the conventional manual method. In addition, the printing plate sheets can be preset outside the machine, and the system can be expanded by connecting the printing plate warehouse instead of the presetting device and controlling operations such as plate replacement and stocking with a microcomputer. In addition, the printing plate sheet can be automatically attached and detached from the printing cylinder, which greatly reduces the time required for setup, increasing productivity. At the same time, it is possible to save labor by expanding the system. Since there is no need to open or close the frame, safety can be further improved.

[Brief explanation of drawings]

Figure 1 is a side view of the top printing method in the printing section of a conventional paper processing machine, Figure 2 is a perspective view of a printing sheet with front and rear stop plates attached, and Figures 3A and 3B are views of the printing cylinder in Figure 1. FIG. 4 is a perspective view of a printing plate sheet showing an embodiment of the present invention, FIG. 5A is a perspective view of a presetting device showing an embodiment of the present invention, and FIG. A-A sectional view of A,
Fig. 6 is a front view of the same printing plate conveying device, the printing plate carrier on the left is a sectional view taken from B to B in Fig. 7, and the printing plate carrier on the right is a view taken along arrow C in Fig. 7. is a side view of Fig. 6, Fig. 8A is a front view of the printing plate changing device, Fig. 8
Figure 9 is a sectional view from D to D of the same plate, and Figure 9 is a front view of the printing plate changing device, conveying device, and presetting device.
Figures 10 and 11 are side views of the same preset device in different operating states, Figures 12 A, B, and
13A, 13B, and 14A, 14B, 2C, and 2C are explanatory diagrams showing the engagement states of the receiving roll and the printing cylinder in different operating states, respectively. Explanation of the main parts of the diagram, 3...Print plate sheet (print plate), 12, 15...Mounting jig (print plate holding means),
12', 12'', 15', 15''... Anchor-like projection (anchor-like engagement part), 13... Rubber band, 16... Preset device (feeding means), 17, 17'... Printing plate Carrier (transportation means), 18... Plate changing device (print plate delivery means), 41... Plate transport device (transportation means), 76... Receiving roll (print plate delivery means), 77
...Printing cylinder.

Claims (1)

[Claims] 1. A printing plate with mounting jigs attached to the front and rear ends of which the spacing can be expanded/contracted using an elastic body and each having an inwardly facing anchor-like engagement part, and a V for suspending the mounting jigs for the printing plate.
A chain with a shaped beam attached thereto is provided almost horizontally on both sides, and a driving mechanism is provided to rotate the chain, and the chain is engaged with the V-shaped beam to sequentially move the printing plates arranged in order in advance. It is equipped with a presetting device that feeds the printing plate to a predetermined position and performs the reverse operation in the case of collection operation, and a chain that is located above the presetting device and moves up and down. It has an upper claw and a lower claw that can be combined, and receives the printing plate held on the V-shaped beam by the upper and lower claws, transports it to a predetermined position above the printing plate part, and in the case of a collection operation. A printing plate carrier that performs a reverse operation to the above, a claw band having an anchor-shaped cross section that can be engaged with the mounting jig for the printing plate is provided on the circumference, and the printing plate is received from the printing plate carrier by the claw band. , has a receiving roll that performs a reverse operation to the above in the case of the simultaneous collecting operation, and a groove that can be engaged with a printing plate mounting jig, and the printing plate is delivered from the receiving roll to the groove, and the simultaneous collecting operation is performed. In this case, an automatic printing plate changing device comprising a printing plate changing device equipped with a printing cylinder that operates in the opposite direction to that described above, and a feeding cam device that moves the receiving roll up and down.