JP2837324B2 - Printing machine fan-out adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan-out adjusting device for adjusting the width of a vise at the rear side when a fan-out occurs during printing.

[0002]

2. Description of the Related Art Conventionally, an outer peripheral surface of a plate cylinder is provided with a grip-side plate vise for holding a starting edge of the plate and a grip-side plate vise for holding an end of the plate. By holding the plate, the plate is mounted around the plate cylinder. Then, in order to eliminate the fan-out in which the printing paper extends in the axial direction of the plate cylinder from the beginning to the end due to the pressure and moisture of printing, the width of the vice on the back side is reduced, and the width of the plate is reduced. I am trying to respond.

[0003] In order to adjust the width of the vise on the side of the gripper side, the vise on the side of the gripper side is divided into two parts. The width of the vise on the butt side is reduced or widened by alternately rotating and adjusting a pair of end adjustment screws provided at both ends of the vise on the butt side.

[0004]

However, in this conventional apparatus, the center adjustment screw and the pair of end adjustment screws need to be adjusted alternately, so that the operation is troublesome.

[0005] The present invention has been made in view of the problems existing in such prior art, and an object of the present invention is to provide a width of the vise on the side of the butt-side plate in the axial direction of the plate cylinder. It is an object of the present invention to provide a fan-out adjusting device for a printing press, which can easily adjust the fan-out.

[0006]

According to the present invention, in order to solve the above-mentioned problems, a groove is formed in the plate cylinder along the axial direction of the plate cylinder, and the groove is formed in the groove with respect to the plate cylinder. In a fan-out adjusting device for a printing press having a gripping side gripping mechanism for gripping a start end and a gripping side gripping mechanism for gripping an end of a plate, the gripping side gripping mechanism includes a plurality of fixed grippers and a plurality of fixed grippers. The fixed gripper is supported by a movable gripper capable of gripping the plate in cooperation with the fixed gripper, and each fixed gripper has a threaded portion whose ends are threaded in opposite directions. With the connecting member provided, the fixing member is connected so as to be able to expand and contract in the axial direction of the plate cylinder, and is biased between the end of the fixed holding body and the inner wall of the groove in the direction in which the buttocks side holding mechanism is contracted. The gist of the present invention is that a biasing member is provided.

[0007]

Therefore, according to the present invention, when adjusting the width of the gripping side gripping mechanism with respect to the axial direction of the plate cylinder,
The width of the gripping side gripping mechanism is reduced by moving the fixing member by the connecting member, but the end of the gripping side gripping mechanism is pressed and supported by the inner wall of the groove by the biasing member. Therefore, the width of the gripping side gripping mechanism with respect to the axial direction of the plate cylinder can be easily adjusted.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
This will be described with reference to FIG. As shown in FIGS. 1 and 16, a plate cylinder 1 is rotatably supported between the side walls 4a and 4b of the offset printing press, and a holding edge of a plate 3 (not shown in FIGS. 1 and 16). A plate holding mechanism F is provided for holding the terminal edge on the side.

As shown in FIG. 1, a mounting groove 2 is provided on the outer periphery of the plate cylinder 1 so as to extend in the axial direction of the plate cylinder 1. In the mounting groove 2, a grip vice A as a gripping mechanism for gripping is provided.
And a vise B on the gripping side as a gripping mechanism on the gripping side are provided so as to face each other in the circumferential direction of the plate cylinder 1. An adjusting mechanism C for adjusting the fan-out or twisting of the plate 3 (not shown in FIG. 1) with respect to the plate cylinder 1 is provided at the center and both ends in the longitudinal direction of the grip-side plate vise B.
Is provided. Further, a clamp operating mechanism D is provided at the left end of the front surface of the plate cylinder 1 for automatically holding the plate on the holding side plate vice A and the holding rear side plate vice B. On the other hand, a moving mechanism E is provided at the right end of the front surface of the plate cylinder 1 to move the grip-side plate vise B so as to be movable back and forth in the circumferential direction of the plate cylinder 1.

(Heavy plate vise A) FIGS. 1, 10, and 1
As shown in FIG. 5, a bolt 9 is provided on the inner bottom surface of the mounting groove 2.
The fixed grip portion 10 extending in the axial direction of the plate cylinder 1 is rotatably supported by being penetrated by the bolt 9 at the center thereof. Fixed gripper 1
0, a pair of movable gripping plates 12 divided into two near the center of the fixed gripping part 10 in the longitudinal direction are provided with a plurality of bolts 1.
By means of 3, they are secured with play to each other in the up-down direction via washers 14. A plurality of receiving holes 16 in which the open coil springs 15 are stored are formed in the upper part of the fixed gripping portion 10 so that the upper surface of the fixed gripping portion 10 is opened. It is arranged along. That is, the open coil spring 15 is
0 and the movable gripping plate 12, and the leading edge of the movable gripping plate 12 is constantly urged by the open coil spring 15 in the opening direction with the bolt 13 as a fulcrum. Reference numeral 19 denotes a bearing fixed to the fixed gripping part 10.

A cam receiving groove 10a extending in the longitudinal direction is formed at the base end edge of the upper surface of the fixed gripping portion 10. On the other hand, a step 12a is formed at the base edge of the lower surface of the movable gripping plate 12 so as to extend in the longitudinal direction thereof and to face the cam receiving groove 10a. This fixed grip 1
A camshaft S1 extending along the longitudinal direction of the holding plate vise A is housed between the 0 cam housing groove 10a and the step 12a of the movable gripping plate 12. The leading edge of the movable holding plate 12 is constantly pressed toward the fixed holding portion 10 with the bolt 13 as a fulcrum by the opening coil spring 15. The left end of the camshaft S1 is connected via a cylindrical coupling 17 to a connecting shaft 18 rotatably supported by the left side wall 2b of the mounting groove 2 so as to be rotatable. The coupling 17 has the same structure as the coupling 27 of the vice-side vise B described later, and the coupling shaft 18 and the camshaft S1 are coupled to the coupling 17 in the same manner as the coupling 27. I have.

(Hand Vice Side Vice B) As shown in FIGS. 1 and 10, the inner bottom surface of the mounting groove 2 is fixed as a pair of fixed grippers extending in the axial direction of the plate cylinder 1. Gripper 20
Are arranged at predetermined intervals. Each fixed gripper 20
A movable gripping plate 21 serving as a movable gripping body is fixed to the upper surface of the upper surface of the base plate 1 with a plurality of bolts 22 with play therebetween in a vertical direction via a washer 23. A plurality of receiving holes 25 in which the open coil springs 24 are stored are formed in the upper part of the fixed gripping part 20 so that the upper surface of the fixed gripping part 20 is opened.
These accommodation holes 25 are provided along the longitudinal direction of the fixed grip portion 20.

That is, the opening coil spring 24 is interposed between the fixed holding portion 20 and the movable holding plate 21, and the leading edge of the movable holding plate 21 is
It is urged to always open with the fulcrum as a fulcrum. Note that the distal end surface of the fixed gripping portion 20 projects beyond the distal end portion of the movable gripping plate 21, and the distal end corner of the fixed gripping portion 20 has a tapered portion 20c.
Are formed.

A cam receiving groove 20a extending in the longitudinal direction is formed at the base edge of the upper surface of the fixed grip portion 20, while the base edge of the upper surface of the movable grip plate 21 extends in the longitudinal direction, A step 21a is formed opposite to the cam receiving groove 20a. Between the cam accommodating groove 20a of the fixed gripper 20 and the step 21a of the movable gripper plate 21, a camshaft S2 extending along the longitudinal direction of the butt-side vise B is accommodated. The leading edge of the movable gripping plate 21 is fixed to the bolt 2 by the opening coil spring 24.
It is pressed toward the fixed gripping portion 20 with 2 as a fulcrum. The left end of the camshaft S2 is connected to a drive shaft 27 via a cylindrical coupling 26, and the drive shaft 27 is connected to the plate cylinder 1
Is rotatably penetrated through the left side wall 2b of the mounting groove 2.

As shown in FIG. 3, the coupling 26
A pair of recesses 26a and 26b are formed at both ends in the axial center direction of the, and the recesses 26a and 26b are formed so as to be orthogonal to each other at 90 °. And each recess 26a, 2
6b has a projection 28 formed at the left end of the camshaft S2.
And a protrusion 27a formed on the right end of the drive shaft 27 are slidably engaged.

As shown in FIGS. 2 and 14, the fixed holding portion 20 is provided with a plurality of spring receiving holes 20b for accommodating a coil spring 29 along the longitudinal direction of the fixed holding portion 20. . The tip of the coil spring 29 protrudes from the spring receiving hole 20b toward the inner surface of the mounting groove 2, and the mounting groove 2
Is in contact with the inner surface of the That is, the coil spring 29
Is fixed between the fixed holding portion 20 and the side wall of the mounting groove 2, and the fixed holding portion 20 is always urged by the coil spring 29 toward the fixed holding portion 12 on the holding plate vise A side.

(Adjustment mechanism C) As shown in FIGS.
A block 34 is connected between the fixed gripping portions 20 of the butt-side plate vise B. The block 34 is provided with a through hole 34 a extending in the axial direction of the plate cylinder 1.
Inside, a connecting rod 30 as a connecting member for connecting the fixed holding parts 20 to each other is supported so as to be rotatable in the left-right direction.
Both ends of the connecting rod 30 have threaded portions 30a and 30b which are threaded in opposite directions to each other. The female threaded portions 32 formed at positions facing each other on the side surface of each fixed gripping portion 20. It is screwed in so that it can advance and retreat. A worm wheel gear 30c is provided at a central portion of the connecting rod 30 excluding the screw portions 30a and 30b.

The block 34 has a mounting hole 3 extending in the radial direction of the plate cylinder 1 and communicating with the through hole 34a.
4b is drilled. The adjusting worm gear 32 meshed with the worm wheel gear 30c is supported by the mounting hole 34b so as to be rotatable in the left-right direction. By rotating the adjusting worm gear 32, the fixed gripping portion 20 can be moved in the axial direction of the plate cylinder 1, that is, the width in the longitudinal direction of the gripper side plate vise B. Can be adjusted to contract freely.

It should be noted that the side plate vise A of the through hole 34a
Guide pins 33 extending in the axial direction of the plate cylinder 1 protrude from both sides of the block 34 located on the side. The guide pin 33 is slidably inserted into an insertion hole 46 formed in the opposite side surface of the fixed gripping portion 20, and guides the movement of the fixed gripping portion 20 when adjusting the width of the vice B on the butt side. I do.

As shown in FIG. 4, a spring insertion hole 36 in which a coiled spring 35 as an urging member is inserted is provided on the left end side surface of the fixed gripping portion 20 located at the front left end of the vise B on the side of the holding buttocks. Are drilled. A plunger 37 is inserted into the spring insertion hole 36 via a spring 35 so as to be slidable in the axial direction of the plate cylinder 1. A ball 37 abutting on the inner surface of the left side wall 2b of the mounting groove 2 is provided at the left end of the plunger 37.
a is rotatably supported in an arbitrary direction. The left end of the plunger 37 is constantly urged by the spring 35 in the direction of pressing against the inner surface of the left side wall 2b of the mounting groove 2.

On the other hand, as shown in FIG.
A female screw portion 38 is screwed into the right end of the female screw portion 38.
, A twist adjustment bolt 39 is screwed in so as to be able to advance and retreat. The right end of the twist adjustment bolt 39 has a mounting groove 2
The ball 39a which is in contact with the inner side surface of the right side wall 2c is rotatably supported in an arbitrary direction. A nut 39b is integrally provided at an end of the twist adjustment bolt 39. By adjusting the screwing position of the twist adjustment bolt 39 into the female screw portion 38, the entire grip-side plate vice B can be moved in the axial direction of the plate cylinder 1.

(Clamp operating mechanism D) The clamp mechanism D is composed of a clamp operating mechanism D1 for the gripping side vice A and a clamp operating mechanism D2 for the gripping side vice B. First, the clamp operating mechanism D1 on the grip side plate vise A side
Will be described.

As shown in FIGS. 8, 10 and 11, a plate holding lever 40 is fixed to the front left end of the connecting shaft 18 connected to the camshaft S1 of FIG. A roller 41 for holding the plate is provided at the tip of the shaft 41.
It is rotatably supported at a. The drive arm 42 is reciprocated in the radial direction of the plate cylinder 1 by an air cylinder (not shown), and can be brought into contact with the plate holding roller 41 at its tip. And the side version vise A is version 3
When the plate cylinder 1 is rotated, the plate holding roller 41 is positioned on the movement locus of the drive arm.

A plate-opening lever 43 is rotatably supported by a support shaft 43a on the left side wall 2b of the mounting groove 2 located near the connection shaft 18. This plate release lever 43
Is formed at one end thereof with a tapered hitting portion 43b extending on the rotation locus of the plate holding roller 41. The hitting portion 43b
Is in contact with the plate holding roller 41. On the other hand, when releasing the plate 3 from the gripping plate vise A, the other end of the plate release lever 43 is connected to the drive arm 42.
A plate opening roller 45 that can contact the tip of the
It is rotatably supported at a. When the plate cylinder 1 is rotated in the case of releasing from the gripping side vice A, the plate releasing roller 45 is positioned on the movement locus of the drive arm 42.

When the gripper side vice A grips the plate 3, the drive arm 42 moves the plate gripper roller 41.
8 in the radial direction of the plate cylinder 1, the plate holding lever 40 rotates clockwise as shown by a chain line in FIG. 8, and the plate opening lever 43 rotates counterclockwise. It has become. That is, the camshaft S1 rotates in the same direction as the plate holding lever 43 via the connecting shaft 18, and the movable holding plate 12 holds the plate 3 against the urging force of the opening coil spring 15. I have.

On the other hand, when the gripper side vise A releases the plate 3, the drive arm 42 hits the plate releasing roller 45 in the radial direction of the plate cylinder 1 so that the plate releasing lever 4 is released.
Numeral 3 is adapted to return from the chain line position to the solid line position in FIG. That is, the camshaft S1 is rotated in the opposite direction to the holding, and the movable gripping plate 12 opens the plate 3 by the urging force of the opening coil spring 15.

Next, the clamp operating mechanism D2 on the side of the vice B will be described. As shown in FIGS. 9 and 12, a lever 50 is fixed to the front left end of the drive shaft 27 connected to the camshaft S2. At one end of the lever 50, a plate holding roller 51 is rotatably supported by a shaft 51a. At the other end of the lever 50, a plate holding roller 52 is rotatably supported by a shaft 52a. The plate holding roller 51 can contact the tip of the drive arm 42.

When the plate-side vise B holds the plate 3, the plate cylinder 1 is rotated so that the plate holding roller 51 is positioned on the movement locus of the drive arm 42. ing. Further, when the plate 3 is opened, the plate cylinder 1 is rotated so that the plate opening roller 5 is opened.
2 is located on the movement locus of the drive arm 42.

When the vice B holds the plate 3, the drive arm 42 causes the lever 5 to move.
Numeral 0 rotates counterclockwise as indicated by a chain line in FIG. That is, the camshaft S2 rotates in the same direction as the plate holding lever 50, and the movable holding plate 12 holds the plate 3 against the urging force of the open coil spring 24.

On the other hand, when the plate-side vise B releases the plate 3, the plate cylinder 1 rotates the plate-opening roller 52 on the movement locus of the drive arm 42. At the position indicated by the solid line in FIG.
That is, the camshaft S2 is rotated in the opposite direction to the gripping, and the movable holding plate 12
Release the plate 3.

(Moving Mechanism E) As shown in FIGS. 1 and 2, a plurality of block-like bases are provided on the inner bottom surface of the mounting groove 2 between the gripper-side vise A and the gripper-side vise B. Stand 6
0 is fixed along the axial direction of the plate cylinder 1. A rail groove 60a extending in the circumferential direction of the plate cylinder 1 is formed in each base 60, and a plurality of rails 60 fixed to the base side surface of the fixed gripping portion 20 of the rear side vice B are formed in the rail groove 60a. A rack gear 62 is supported. The rack gear 62 is slidable in the rail groove 60a.

A drive shaft S3 extending in the axial direction of the plate cylinder 1 is rotatably mounted via a metal (not shown) between both side walls 2b and 2c of the mounting groove 2. A pinion gear 62 is threaded on the peripheral surface of the drive shaft S3 corresponding to the rack gear 62.
2 and the rack gear 62 are meshed.

As shown in FIGS. 13 and 14, a ring gear 63 is fitted and fixed to the right end of the drive shaft S3 in FIG. On the right side wall 2c of the mounting groove 2 located in the vicinity of the ring gear 63, a first lever 6 for moving the grip-side plate vise B in the circumferential direction of the plate cylinder 1 when holding the plate 3 is provided.
4 is rotatably supported by a support shaft 64a. When the plate is opened, the right side wall 2c has a vise B on the bottom side.
The second lever 65 for moving the roller in the circumferential direction of the plate cylinder 1 is rotatably supported by a support shaft 65a. Spur gears 64 are provided on the outer periphery of the base end of the first lever 64 and the second lever 65.
b, 65b are formed. Both spur gears 64a, 65b
Is meshed with the ring gear 63.

On the other hand, the first lever 64 and the second lever 65
Are formed with tapered tapping portions 64c, 65c that can be brought into contact with the distal end of an operating arm 66 that reciprocates in the radial direction of the plate cylinder 1 by an air cylinder (not shown). Then, in the case where the grip-side plate vise B holds the plate 3, the plate cylinder 1 is rotated so that the beating portion 64c of the first lever 64 is positioned on the movement locus of the operation arm 66. Has become. Further, when the plate cylinder 1 is rotated at the time of opening, the hitting portion 65c of the second lever 65 is positioned on the movement locus of the operating arm 66 when the plate 3 is opened.

In the case where the grip-side plate vice B holds the plate 3, the operating arm 66 taps the tapping portion 64c of the first lever 64 in the radial direction of the plate cylinder 1, whereby
The first lever 64 is configured to rotate clockwise as indicated by a chain line in FIG. That is, the drive shaft S
3 rotates, the fixed gripper 20 moves along the circumferential direction of the plate cylinder 1 against the urging force of the coil spring 29.

After the clamp 3 has been clamped to the clamp vice B by the clamp operating mechanism D2, the coil spring 29
The urging force causes the fixed gripping portion 20 to return to the position near the plate holding position shown by the chain line position in FIG. Accordingly, the first lever 64 and the second lever 65 return to the position near the solid line before holding the plate 3 shown in FIG.

Conversely, in the case where the vise B on the butt side releases the plate 3, the plate cylinder 1 is brought into contact with the hitting portion 65 of the second lever 65.
c moves on the movement trajectory of the operation arm 66. Then, the operating arm 66 moves in the radial direction of the plate cylinder 1 and strikes the striking portion 65c of the second lever 65, whereby the second lever 65 rotates clockwise as shown by a chain line in FIG. It has become. That is, as the drive shaft S3 rotates, the fixed gripping portion 20 moves along the circumferential direction of the plate cylinder 1 against the urging force of the coil spring 29. Further, after the plate is opened from the grip-side plate vise B, the fixed gripper 20 is returned from the chain line position shown in FIG. 12 to the solid line position by the urging force of the coil spring 29.

(Plate Holding Mechanism F) As shown in FIGS. 16 and 18, the upper part of the rod 70a of the air cylinder 70 is
A connecting metal fitting 71 having a forked tip is connected. A connection link 72 is rotatably connected to a distal end of the connection fitting 71 by a pin 73. The distal end of the connection link 72 is fixed to the front left end of a support shaft 74 rotatably supported by the side walls 4a and 4b. A link 75 is fixed to the support shaft 74 between the side walls 4a and 4b.

As shown in FIGS. 17 and 18, a roller support shaft 76 is fixed to the leading end of the link 75 through a roller (not shown).
A roller 79 extending along the axial direction of the roller is rotatably supported. At the left end of the roller support shaft 76, a rocking lever 78 moves between a plate holding position shown in FIG. 19 and a plate non-pressing position shown in FIG. 20 via a kick spring 77 loosely inserted into the roller support shaft 76. It is swingably supported. A roller 80 is rotatably supported by a shaft 81 at the tip of the swing lever 78. One end of the kick spring 77 is mounted on a base end of the swing lever 78, and the other end is mounted on a distal end of the link 75. And the roller 80 of the swing lever 78
The kick spring 77 is urged to always contact the cam surface 87b of the cam 87 described later.

A pair of driven levers 82 are fixed to both ends of the roller support shaft 76. The driven lever 82 swings around the roller support shaft 76 between the standby position shown in FIG. 19 and the operating position shown in FIG. 20 with the swinging of the swing lever 78. ing. A support rod 83 extending along the axial direction of the roller 79 is fixed to the distal ends of both driven levers 82 with screws 84. A pair of gripping plates 85 extending along the axial direction of the roller 79 are fixed to the distal end surface of the support rod 83, and a blade 86 made of a rubber material is fastened between the gripping plates 85 with screws (not shown) or the like. It is pinched by being done. The tip of the blade 86 protrudes from the gripping plate 85, and the tip of the blade 86 is formed obliquely.

As shown in FIGS. 16, 19 and 20,
A plate holding cam 87 is provided on the left side of the plate cylinder 1 with a pair of screws 88.
, So that the position can be adjusted via the mounting elongated hole 87a. With the rotation of the plate cylinder 1, the roller 80 of the swing lever 78 is pressed by the kick spring 77 against the cam surface 87 b of the plate pressing cam 87, and the plate non-pressing surface M
1 can be moved to the plate holding surface M2.

That is, as shown in FIG.
7b, the swinging lever 78 and the driven lever 82 are moved to the plate holding position, and the leading end of the blade 86 moves the end of the plate 3 to the plate cylinder 1 as shown in FIG.
To be pressed in the radial direction of the axial center portion.

Next, the operation of the printing machine thus configured will be described. (Automatic plate holding operation) First, before carrying out the plate 3 holding operation, the screw 88 is loosened and the position adjustment of the plate holding member 87 is completed. As shown in FIGS. 8, 10 and 11, the starting edge of the plate 3 is fixed to the fixed gripping portion 10 while the fixed gripping portion 10 and the movable gripping plate 12 of the gripping plate vise A are opened.
And an operation start switch (not shown) is operated. Then, when the drive arm 42 is moved by the air cylinder (not shown) in the direction of the arrow indicated by the chain line in the drawing, which is the radial direction of the plate cylinder 1, the plate holding roller 41 is hit and the plate holding lever 40 is moved. It is rotated clockwise. Accordingly, the camshaft S1 is rotated clockwise, the movable gripping plate 12 is closed against the urging force of the open coil spring 15, and the leading edge of the plate 3 is held by the holding plate vise A. In addition, since the distal end of the fixed grip 20 protrudes beyond the distal end of the movable grip 21, the terminal edge of the plate 3 is securely inserted between the fixed grip 20 and the movable grip 21. .

Further, following the movement of the plate holding roller 41 shown in FIG.
3b is pressed, and the plate release lever 43 is rotated counterclockwise in FIG. The drive arm 42 returns to its original position after hitting the plate holding roller 41.

Here, as shown in FIGS. 18 and 19,
The air cylinder 70 is actuated to protrude the rod 70a. At the same time, the connecting link 75 is rotated clockwise in FIG.
Is brought into contact with the outer peripheral surface. FIG. 11 shows the plate cylinder 1
Is rotated counterclockwise, the plate 3 is wound around the plate cylinder 1 while being sandwiched between the roller 79 and the plate cylinder 1 which rotate as the plate cylinder 1 rotates.

Then, while the roller 79 keeps pressing the plate 3, as shown in FIG. 20, the roller 80 of the swinging lever 78 is pressed against the urging force of the kick spring 77 (FIG. 17) to hold the plate pressing cam 87. Is moved to the plate pressing surface M2 while rotating from the plate non-pressing surface M1. Then, the rocking lever 78 is rocked from the plate non-pressing position to the plate pressing position, and the driven lever 82 is rocked from the plate non-pressing position to the plate pressing position. At the same time, the tip of the blade 86 is moved into the mounting groove 2 of the plate cylinder 1, and the terminal edge of the plate 3 is pressed by the tip of the blade 86.

At this time, as shown in FIG.
Is stopped at a position where the plate holding roller 51 has moved on the movement locus of the drive arm 42. In this state, FIG.
As shown in FIG. 5, when the operating arm 66 of the moving mechanism E is rotated in the direction of the arrow indicated by the chain line in FIG.
Tapping portion 64c of first lever 64 of clamp operating mechanism D2
And the first lever 64 and the second lever 6
5 is rotated clockwise in FIG. Accordingly, the drive shaft S3 is rotated counterclockwise in FIG.

Then, as shown in FIG. 14, each pinion gear 61 of the drive shaft S3 is rotated counterclockwise in the figure, and each rack gear 62 meshed with this pinion gear 61.
Is moved together with the fixed gripping portion 20 in the direction of the arrow shown by the broken line in the figure against the urging force of the coil spring 29. At this time, the end edge of the printing plate 3 is inserted between the fixed holding portion 20 and the movable holding plate 21 while sliding on the inclined portion 20 c of the fixed holding portion 20. The operating arm 66 is held in a state where the operating arm 66 is hit by the hitting portion 64c of the first lever 64.

When the drive arm 42 is moved in the radial direction of the plate cylinder 1 in the direction of the arrow shown in FIG. 9 while maintaining this state, the plate holding roller 51 is beaten. At the same time, the lever 50 is rotated counterclockwise in FIG. Accordingly, as shown in FIG. 12, the camshaft S2 is rotated counterclockwise in FIG. 12, the movable gripping plate 21 is closed against the urging force of the open coil spring 15, and the end edge of the plate 3 is held. It is added to the vice version B on the buttocks side.

After that, the drive arm 42 hits the plate holding roller 51, and then the drive arm 42 returns to the original position. The air cylinder 70 is actuated to return the rod 70a to its original state, and the roller 79 and the blade 86 are separated from the plate 3 in the reverse order of contact with the plate 3 described above.

That is, after the starting edge and the ending edge of the plate 3 are rotated around the plate cylinder 1 while being held by the plate vises A and B, as shown in FIG. It is moved in the direction of the dashed line in FIG. Accordingly, the first lever 64 and the second lever 65 are rotated in the counterclockwise direction in the figure, so that the ring gear 63 and the pinion gear 61 are rotated in the clockwise direction in the figure. Accordingly, the plate 3 is tensioned with respect to the plate cylinder 1 by moving the rack gear 62 in the direction opposite to the arrow indicated by the broken line in FIG.

When the plate 3 is to be removed from the plate cylinder 1, by operating an operation switch (not shown), the hitting portion 65c of the second lever 65 shown in FIG. As a result, the tip of the operating arm 66 is hit by the hitting portion 65c. Then, as described above when the plate 3 is held, the ring gear 63 and the drive shaft S3 are rotated by the operating arm 66 in the same direction as when the plate 3 is held, and the fixed gripper 20 is moved in the direction of the arrow shown by the broken line in FIG. Then, the tension of the plate 3 on the plate cylinder 1 is released. At this time, the distal end of the operating arm 66 is
5 remains in contact with the beating portion 65c.

In this state, the plate cylinder 1 is rotated and the lever 5
The plate release roller 52 of 0 is moved on the movement locus of the drive arm 42. The tip of the drive arm 42 shown in FIG.
0 is rotated in the opposite direction when the plate 3 is held. Therefore, the drive shaft 27 and the camshaft S2 are rotated in the opposite direction to the gripping direction, the movable gripping plate 21 of the plate vise B on the gripping side is opened by the urging force of the coil spring 24, and the terminal edge of the plate 3 is opened. In addition, it is released from the vise B on the butt side. The drive arm 42 returns to its original position after hitting the plate releasing roller 45. After the plate 3 is released, the operating arm 66 is moved to a position before the operation, and the fixed gripper 20 is also moved to the original position.

Then, as shown in FIGS. 8 and 10, the plate cylinder 1 is rotated and the plate releasing roller 43 of the plate releasing lever 43 is rotated.
After 5 moves on the movement locus of the drive arm 42, the tip end of the drive arm 42 moves in the direction of the arrow shown by the dashed line in FIG. Along with this, the plate holding roller 41 is beaten by the hitting portion 43b of the plate opening lever 43, and the plate holding lever 40 is rotated in the opposite direction when the plate 3 is held. Accordingly, the camshaft S1 is rotated in the opposite direction when the plate 3 is held, the movable holding plate 12 of the plate-side vise A is opened by the biasing force of the opening coil spring 15, and the starting edge of the plate 3 is held in the plate-side plate holder. Released from force A. The drive arm 42 returns to its original position after hitting the plate releasing roller 45.

(Twist Adjustment of Plate) As shown in FIG. 6, after the plate 3 is attached to the plate cylinder 1, the twist of the plate 3 is adjusted by the twist adjusting bolt 39 to hold the plate vise B on the rear side. Is moved in the axial direction of the plate cylinder 1, that is, in the horizontal direction in FIG. Here, the side version vise A of version 3
In the following, a description will be given of a case in which the starting edge positioned at the right side of FIG. 3 is shifted to the right side in the figure, and the terminal edge positioned at the grip-side side vise B is shifted to the left side of the drawing, and the entire plate 3 is twisted.

As shown in FIGS. 2 and 4, by rotating the nut 39b of the twist adjustment bolt 39, the twist adjustment bolt 39 is moved in the direction of the arrow shown by the chain line in FIG. At the same time, the spring 35 is compressed in the fixed gripping portions 20 of the grip-side plate vise B, and is moved to the left in the direction of the arrow shown by the chain line in FIG. 4 against the urging force.

That is, as shown in FIG. 6, the grip-side plate vise B is moved to the left side with respect to the plate cylinder 1 so that the plate 3 is centered on the bolt 9 located at the starting edge of the plate 3.
Is moved in the direction of the arrow indicated by the chain line in FIG. Therefore, the position of the printing plate 3 is corrected by moving the end edge of the printing plate 3 by the amount that the starting edge is relatively displaced from the terminal edge, and the printing plate 3 is stretched straight along the circumferential direction of the printing drum 1.

(Fan-out adjustment) If a fan-out occurs during printing, the operation of an operation switch (not shown) is performed to stop the rotation of the plate cylinder 1. And FIG.
As shown in FIG. 7, by rotating the adjusting worm gear 32 in a predetermined direction, the worm wheel gear 30c of the connecting rod 30 is rotated. At the same time, connecting rod 30
By rotating the screw portions 30a, 30b of the plate 3, the fixed plate vises 20 are moved toward each other in the axial center of the plate cylinder 1 while being guided by the guide pins 33, and the terminal edge of the plate 3 is moved. Is narrowed in the axial direction of the plate cylinder 1. That is, the width of the terminal edge of the plate 3 is reduced in the direction of the broken line shown in FIG.
It is narrowed according to the movement amount of zero. At this time, each fixed plate vice 20 is attached to the mounting groove 2 by the urging force of the spring 35 shown in FIG.
Are supported by the side walls 2b and 2c.

As described above, the printing press of this embodiment has excellent effects as described below. (1) Unlike the conventional case, the plate 3 can be made to revolve around the plate cylinder 1 in a state where the end edge of the plate 3 is not bent. In addition, the trailing edge of the plate 3 can be automatically added to the vice B on the rear side. In addition, after the plate 3 is added, the plate 3 can be automatically stretched with respect to the plate cylinder 1 by moving the fixed gripping portion 20 by the urging force of the spring 35. Accordingly, the time for holding and tensioning the plate 3 with respect to the plate cylinder 1 can be greatly reduced.

(2) In the case where the plate 3 is twisted with respect to the plate cylinder 1, the twist adjusting bolt 3 is not adjusted with a plurality of adjusting bolts and the like, unlike the related art.
By screwing the screw back into or out of the plate 9, it is possible to easily move the rear side vice B in the axial direction of the plate cylinder 1. Therefore, the twist adjustment of the plate 3 becomes easy.

(3) By rotating the adjusting worm gear 32, each of the fixed gripping portions 20 can be moved in the axial direction of the plate cylinder 1. It can be made stretchable. Therefore, even if a fan-out occurs during printing, the width of the plate 1 can be easily changed.

(4) When the plate 3 is wound around the outer peripheral surface of the plate cylinder 1, the plate 3 is
The plate 3 is wound while being securely pressed against the outer peripheral surface of the plate 3. Therefore, the printing plate 3 is reliably wound while minimizing the bending of the printing plate cylinder 1, so that the printing plate 3 does not come off from the printing drum 1 during winding.

(5) The end edge of the plate 3 is added, and the vice B at the buttocks side
Before the addition, the leading end of the blade 86 presses the terminal edge of the printing plate 3, so that the printing plate 3 is reliably held by the holding-side plate vise B.

(6) By adjusting the position of the plate pressing cam 87, the timing at which the blade 86 presses the plate 3 can be freely changed. Therefore, it is possible to cope without depending on the type of the plate 3.

The present invention is not limited to the above-described embodiment, and may be appropriately changed as follows without departing from the spirit of the present invention. (1) In the above embodiment, the plunger 37 is urged by the coiled spring 35, but the plunger 37 may be omitted and only the spring 35 may be used. Further, any spring such as a leaf spring may be used.

(2) The gripper side mechanism and the moving mechanism operate the drive arm 42 and the operating arm 66 with an air cylinder to add the plate to the plate vise or move the plate vise. Plate holding lever 40, plate opening lever 43, lever 50, first and second levers 64, 6
5 may be omitted, and a motor may be used instead, and the rotating shaft of the motor, the two camshafts S1, S2, and the drive shaft S3 may be connected and driven as necessary except during printing.

(3) Although a plurality of pinion gears and rack gears are provided in the moving mechanism so that the fixed gripper 20 can be moved along the circumferential direction of the plate cylinder, any number may be used.

(4) The shape of the plate holding cam 87 is not limited to the above-mentioned embodiment, and may be any shape.

[0069]

As described above in detail, according to the present invention, there is an excellent effect that the width of the gripping side gripping mechanism in the axial direction of the plate cylinder can be easily adjusted.

[Brief description of the drawings]

FIG. 1 is a plan view of a printing press according to an embodiment.

FIG. 2 is a plan view showing the right end of the grip-side plate vise and the grip-side plate vise.

FIG. 3 is a plan view showing the left end of the vise on the side of the butt.

FIG. 4 is a plan view showing the left end of the vise on the side of the butt.

FIG. 5 is a plan view of the adjustment mechanism.

FIG. 6 is a development view of the plate cylinder.

FIG. 7 is a sectional view of the adjustment mechanism.

FIG. 8 is also a front view of the clamp mechanism in the vice on the grip side.

FIG. 9 is a front view of the clamp mechanism in the vice on the side of the butt similarly.

FIG. 10 is a cross-sectional view taken along the line XX in FIG. 1, showing a state before the holding-side plate vise holds the plate;

11 is a cross-sectional view taken along the line XX in FIG. 1, showing a state after the plate-side vise is added to the plate.

FIG. 12 is a cross-sectional view taken along the line XX in FIG. 1, showing the state after the vice on the side of the butt side has added the plate;

FIG. 13 is a front view of the moving mechanism.

FIG. 14 is a sectional view taken along the line YY in FIG. 1, showing a state in which the vice on the side of the butt is moved by the moving mechanism.

FIG. 15 is a sectional view of a longitudinally central portion of the vice on the grip side.

FIG. 16 is a plan view showing the arrangement of a plate cylinder and a plate bottom pressing mechanism.

FIG. 17 is a plan view showing an end of the plate edge pressing mechanism.

FIG. 18 is a sectional view taken along the line ZZ in FIG. 16, showing a state before the rollers of the plate edge pressing mechanism press the plate cylinder.

19 is a sectional view taken along the line ZZ in FIG. 16, showing a state in which the roller of the plate bottom pressing mechanism presses the plate cylinder.

FIG. 20 is a sectional view taken along the line ZZ in FIG. 16, showing a state in which the blade of the plate bottom pressing mechanism presses the terminal edge of the plate.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... plate cylinder, 2 ... groove part, 2b ... side wall, 3 ... plate, 20 ... fixed holding part (fixed holding body), 21 ... movable holding part (movable holding body), 30 ... connecting rod as a connecting member, 35 ... Spring as a biasing member, A: Vice on the grip side (grip mechanism on the grip side), B: Vice on the grip side (grip mechanism on the grip side)

Claims (1)

(57) [Claims] A groove is formed in the plate cylinder along the axial direction of the plate cylinder, and a gripping mechanism for gripping a starting end of the plate with respect to the plate cylinder and a gripper for gripping an end of the plate in the groove. In a fan-out adjusting device for a printing press provided with a side gripping mechanism, the gripping side gripping mechanism is supported by a plurality of fixed grippers and can be opened and closed with respect to the fixed gripper, and cooperates with the fixed gripper. Each fixed gripper is a connecting member having a threaded portion whose end is threaded in a direction opposite to each other, and the fixed member is an axis of the plate cylinder. And a biasing member fixed between the end of the fixed gripping body and the inner wall of the groove to bias the butt-side gripping mechanism in the contracting direction and to fix the biasing member in the groove. Characteristic fan-out adjustment device for printing press.