JPH0365343A - Printing plate vice for printer - Google Patents

Abstract

PURPOSE:To shorten preparing time by forming a tail side plate vice of a vice base and an engaging plate, rockably coupling the end of the plate through a shaft, and providing a cam mechanism for closing the engaging face and engaging the plate at the initial stage of rotation and moving the base and the plate circumferentially of a body at the final stage of rotation. CONSTITUTION:A tail side plate vice 30 for engaging one end of a printing plate in a cutout 2 at the periphery of a body is formed of a vice base 35 having plate engaging faces 35a, 35b extended radially of the body to engage the bending end of the plate, and an engaging plate 14. The base 30 is rockably coupled to the end of the plate 14 at the engaging face side through a shaft 33, a cam 38 opposed with the cam face is provided at the base 35, and a cam mechanism for closing the faces 35a, 35b at the initial stage of rotation through rotation of the cam 38 to engage the plate and for moving the base 35 and the plate 14 circumferentially of the body 1 to apply tension to the plate at the final stage of rotation is provided. Thus, the engaging and application of tension of the plate can be continuously conducted merely by rotating the cam 38 thus shortening the preparing time and improving productivity.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a plate that is provided on a plate cylinder of a printing press and that fixes the grip side and tail side of the plate wrapped around the cylinder circumferential surface within a cylinder circumferential notch. It concerns a vise device.

[Conventional technology]

The outer periphery of the plate cylinder of various printing presses is provided with a notch that extends the entire length of the cylinder and has a rectangular cross section. and a plate vise device that grips the butt end of the plate wrapped around the body circumferential surface, and a plate vise device is fixed to the bottom of the notch and extends in the axial direction of the body. It is set up.

These conventional grip-side and tail-side plate vises have a long vise base extending in the direction of the axis of the body, and a plurality of bolts at the end of the vise base to allow the vise to swing freely. It is equipped with a plurality of gripping plates that are opened and closed by movement to hold and release the plate from the vise table, and a plurality of cams that engage with notches at the end edges of each of these gripping plates. A plurality of cams are fixed in parallel on a rotatable cam shaft. Furthermore, a plurality of compression coil springs are interposed between the vice stand and the grip plate to bias the grip plate in the opening direction.

With this structure, when holding a plate in your mouth, by turning the camshaft +JJ, the gripping plate, which is divided into multiple pieces in the lengthwise direction of the body, is released from the engagement of the plate, and the compression coil is released. They open all at once due to the elastic force of the spring, so after inserting the @ of the plate between the grip plate and the vise stand, and rotating the camshaft in the opposite direction, the grips will be compressed by the action of the cam. Resisting the elastic force of the coil spring, it swings closed and grips the edge of the plate.

In addition, the vise stand of the butt side version vise is supported on the bottom of the notch around the trunk so that it can move freely in the direction of the trunk circumference, and at multiple locations in the longitudinal direction of this vise stand, multiple plate The tip is screwed into contact with the wall surface 6 of the notch around the trunk.

With this structure, after the end of the gripper is held in the vise on the gripper side and wrapped around the torso as described above, the end of the butt side is wrapped in the vise on the butt side. The gripped plate is tensioned by the movement of the butt side plate vise in the circumferential direction of the trunk by tightening the plate tensioning bolt, and is brought into close contact with the circumferential surface of the trunk. Note that a spring member is interposed between the butt side plate vise and the notch side, and when the plate tension bolt is loosened, the plate vise becomes 1
Due to the spring force of the second spring member, the plate is loosened by moving toward the wall surface of the notch.

However, in such conventional plate vise devices, the edge of the plate is bent and stretched out, and the plate is inserted between the vise stand and the grip plate from the tangential direction of the plate cylinder. Because of this, it is technically difficult to hold the plate straight without distorting it, and after the plate is tightened, the tension on the plate becomes uneven in the width direction of the plate, making it easy to lose the printing register.

To solve this problem, an apparatus disclosed in, for example, Japanese Unexamined Patent Publication No. 1-127346 has been proposed. In this device, the vise stand and the gripping plate are arranged in the radial direction of the plate cylinder so that the gripping surface on the bottom side of the plate, which was conventionally formed in the circumferential direction of the plate cylinder, is formed in the radial direction of the plate cylinder. The edges of the plate are set separately.
It is oiled at right angles by a vertical plate bending machine.

With this configuration, the butt end of the plate that is held by the gripper side end of the hoe λ side and wrapped around the body circumferential surface is folded between the vice stand and the gripper plate. The folded piece of the plate is held in the plate by swinging the gripping plate using the cam mechanism.4Then, by moving the entire bottom plate vise in the same direction in the circumferential direction, the plate is evenly distributed. It is stretched and tightly adheres to the circumference of the torso.

[Problem to be solved by the invention]

However, in such conventional plate vise devices, the gripping of the plate and the tensioning of the plate are performed by separate mechanisms, respectively, as described above, resulting in a complicated structure, increased man-hours, and There is a problem that good workability cannot be obtained.

[Means to solve the problem]

In order to solve these problems, the present invention has a rear plate vise that is located in the notch around the body and grips one end of the plate, and extends in the radial direction of the body so as to grip the bent end of the plate. It is formed by a vise stand having a plate gripping surface and a gripping plate, the vise stand and the gripping plate's plate gripping end portions are swingably connected by a shaft, and the cam surface is opposed to the vise stand. Attach the six-cam, and as the cam rotates, at the beginning of the rotation, the plate is held in its mouth with the plate gripping surface closed, and at the end of the rotation, it is held in the vise stand so as to tension the plate held in its mouth. A cam mechanism was provided to move the plate in the circumferential direction of the barrel.

[For production]

After inserting one end of the plate between the open grip plate of the grip side vise and the hook, wrap the plate around the circumference of the body, and then press the open grip plate of the rear side vise and the vise. Insert the bent part of the other end of the plate between it and the stand.

Then, when the camshaft is rotated, the gripping plate closes and grips the folded part of the plate, and when the camshaft continues to be rotated, the vise gripping plate moves in the circumferential direction of the barrel. 1. The plate is stretched and tightly adheres to the circumferential surface of the trunk.

〔Example〕

1 to 5 show an embodiment of the plate vise device for a printing press according to the present invention. -■ sectional view, FIG. 3 is a sectional view taken along ■--■ in FIG. 1, FIG. 4 is a sectional view taken along line IV--IV in FIG. 1, and FIG. In the figure, on the outer periphery of the plate cylinder l, there is a notch 2 formed into a rectangular cross section. 'A pair of saddle-shaped guides 3 and 4 are bolted to the bottom of the notch at both ends of the notch 2.

The cross section of the gripper side vise, which is indicated by the symbol 5 as a whole, is! It is equipped with a vise stand 6 formed in a square shape and extending in the direction of the barrel axis, and the thin walled portions 6a at both ends of the vise stand 6 are restricted from vertical movement by the left and right guides 3 and 4, and extend in the circumferential direction. They are fitted with slight movement allowed. Note that the vise stand 6 is slidably pressed at its intermediate portion by a plurality of guides (not shown) fixed to the bottom surface of the notch 2 to prevent it from rising.

Screw holes 6b, the cross section of which is shown in FIG. A flanged pin 8 whose flanged portion is inserted into the gap between the vise stand 6 and the wall surface of the notch 2 is inserted into the pin hole corresponding to the adjustment screw 7, and the tip thereof is inserted into the pin hole at the location corresponding to the adjustment screw 7. It is slidably inserted into contact with the tapered surface of the By doing so, when the adjusting screw 7 is rotated, the vise table 6 is adjusted to move by a small amount in the circumferential direction due to the action of the tapered surface. The one indicated by reference numeral 9 in FIG. 5 is interposed between the stud 15 on the vise stand 6 side and the wall surface of the recessed hole 2a of the notch 2, and urges the entire plate vise 5 outward in the circumferential direction. It is a compression coil spring.

A single-shaped grip plate holder 11 shown in FIG. A gripping plate 14 having the same overall length as the vise stand 6 and having a dogleg-shaped cross section divided into three parts in the direction of the axis of the body is swingably supported, and its gripping surface 14a is attached to the vise stand 6. It faces the gripping surface. Although not shown, the gripping surface 14
A has a plurality of protrusions formed thereon and engages with grooves on the opposing gripping surface. A plurality of stands 15, the cross section of which is shown in FIG. A compression coil spring 17 is interposed between the pin 16 screwed into the screw hole and the recessed hole at the lower end of the gripping plate 14 to bias the gripping plate 14 in the direction in which its gripping surface 14a closes. There is.

On the other hand, the center part of the bottom of the notch 2 has 0. A plurality of rectangular bearings 18 are fixed in parallel in the axial direction of the cylinder with bolts, and a camshaft 19 with a hexagonal cross section is fitted into these bearings 18 with circular cross sections to rotate. A plurality of plate gripping cams 20 each having a large diameter portion and a small diameter portion are mounted on the cam shaft 19 in parallel in the axial direction. The cam surface of each plate gripping cam 20 is in contact with the vertical surface of each gripping plate 14, and by rotating the cam shaft 19 by applying a wrench to the protrusion from the guide 3, the plate gripping cam 20 is rotated. The large diameter portion 20 is configured to swing the grip plate 14 counterclockwise in the figure against the elastic force of the compression coil spring 17, thereby opening the grip surface 14a.

In the notch 2, a butt-side vise, which is generally designated by reference numeral 30, is provided parallel to the gripping side blade 5. The butt side vise 30 is formed to have the same length as the body length, and the spring bearing whose vertical surface is attached to the vertical surface of the bearing 18 is a bar 31.
The spring bearing bar 31 is fixed to the bottom surface of the notch 2 by a plurality of ports 32. The spring bearing bar 31 is a regulating surface 31a extending in the radial direction of the plate cylinder 1.
This regulating surface 31a and the wall surface 2b of the notch 2 are provided.
A support shaft 33 extends with both ends close to the disc-shaped bearers 34 at both ends of the plate cylinder 1, and a vice stand 35 and a gripping plate 36, which are each divided into three parts in the cylinder axis direction. The gripping surfaces 35a and 36a extending in the radial direction of the plate cylinder 1 are opposed to each other, and the side opposite to the gripping surface is swingably connected by this support shaft 33. Reference numeral 37 denotes an adjustment screw that connects the three divided vise stands 35, and a right-hand screw and a left-hand screw are screwed into screw holes of each vise stand 35, so that both vise stands 35 The distance between both vise stands 35 is adjusted by inserting a tool into a hole in a collar portion 37a integrally formed between the two and rotating the tool. In the four parts 2C formed on the wall surface 2b of the notch 2, there is a flat small diameter part 3.
A cam 3B formed into a rod shape by an arcuate large diameter portion 38b and a cam 3B is rotatably supported by the bearer 34,
The protruding portion 38c from the bearer 34 is formed in a hexagonal shape. , three are brackets formed in a U-shape and fixed to the hair roller 34, and the circular portion formed at the tip of the cam 38 and the circular portion at the tip of the hexagonal portion 19a of the cam shaft 19 are attached to this bracket. It is rotatably supported in the shaft hole of 39. Further, reference numeral 40 denotes a guide for guiding the rotation of the cam 38, and the four parts 2C of the notch wall surface 2h are connected with bolts 41.
Fixed. Furthermore, between the bottom surface of the plurality of spring holes formed at the opposite end of the vise stand 35 and the bottom surface of the plurality of spring holes formed with the spring receiver bar 314,
A compression coil spring 42 is interposed between the vise stand 35 and the spring holder, which forces the bar 31 apart from each other by 44 times. A compression coil is provided between the bottom of the spring hole 31b and the bottom of the spring hole 31b and the spring shaft 44, which is provided in the spring shaft 44 and whose end of movement is regulated by a double nut 43, is configured to bias the gripping plate 36 away from the spring bar 31. A spring 45 is loaded. In addition, in the spring hole of the vise stand 35 part, there is a vise stand 3
A compression coil spring 46 is loaded which biases the gripper 5 in the direction of separating the gripper plate 36 from the gripping plate 36.

The operation of the plate vise device configured as described above will be explained using the above-mentioned figures as well as the vertical cross-sectional view of the bottom side plate vise before gripping the plate shown in FIG. From the state shown, camshaft 1
When the protruding portion 19a from the bearer 34 of 9 is operated with a spanner, the plate gripping cam 20 rotates, its large diameter portion pushes the gripping plate 14, and the gripping plate 14 is pressed against the elastic force of the compression N coil spring 17. It resists the force and swings counterclockwise in the figure, so
The gripping surface 14a of the gripping plate 14 opens (4), and one end of the plate is inserted between the gripping surface 14a and the gripping surface of the vice stand 6. Then, when the cam shaft 19 is rotated in the opposite direction, the plate gripping cam 20 rotates and its small diameter portion comes into contact with the vertical surface of the gripping plate 14, and the gripping plate 14 holds the plate gripping cam 20. The gripping plate 14 moves clockwise in the drawing due to the elastic force of the compression coil spring 17, and the gripping surface 14a closes, gripping one end of the plate.

After holding one end of the plate in your mouth, lift the plate cylinder 1! 1
When rotated, the plate is wound around the circumferential surface of the plate cylinder 1, and the other end of the plate bent at right angles by a plate bending machine etc. is placed in the bottom plate vise 30.
guided by. At this time, as shown in FIG.
The small diameter portion 38a is in contact with the vise stand 35 to release the vise stand 35 from pressure, and the vise stand 35 and the gripping plate 36 are connected to the compression coil springs 42, 45, 46. Due to the elastic force, they are tilted in opposite directions about the support shaft 33. Therefore, the bent part of the plate is placed on the gripping surface 3 of the vice stand 35.
5a and the gripping surface 36a of the gripping plate 36, and when the projecting end 38c of the cam 38 from the bearer 34 is rotated with a wrench, the force l and the force 3 are rotated and its magnitude is increased. As shown in FIG. 2, the radial portion 381) begins to come into contact with the vise stand 35, and at the beginning of the rotation of the cam 38, the vise stand 35 and the gripping plate 36 are compressed by the compression coil spring 45.46.
Stand upright against the spring force and hold the folded part of the plate in your mouth. Furthermore, the angler continued to rotate for 3 days, and the large diameter part 381)
When you press , the rotation of this cam 38 is finished! At t1N,
The vise stand 35 and the gripping plate 36 move together in the circumferential direction of the plate pi against the elastic force of the raw cotton coil springs 42, 45, 46, so that the plate is stretched and the plate cylinder l Closely adheres to the surrounding surface. At this time, the spring shaft 44 is pushed, and a gap is formed between the double nut 43 and the spring bearing bar 31. In this way, the plate can be waded and tensioned continuously simply by rotating the cam 38.

When removing the plate from this state, when the cam 38 is rotated, the vise table 35 and grip plate 36 move to loosen the plate, and the double nand 43
After the spring receiver contacts the bar 31, the small diameter portion 3 of the cam 38
When 8a comes into contact with the vise stand 35, due to the elastic force of the compression coil spring 46, the vise stand 35 and the grip plate 36 are tilted j-, as shown in FIG. 6, and the plate grip is released. Therefore,
After rotating the plate cylinder 1 once to unwind the plate, the force J and the shaft l9 are rotated to bring the large diameter part of the plate gripping cam 20 into contact with the gripping plate 14, and the gripping plate 14 is opened, the other end of the plate is released, and the removal work of the plate is completed. In this way, both ends of the plate can be gripped and released, and the plate can be tensioned and loosened by rotating the camshaft at one location.

Although this embodiment shows an example in which the camshaft 19 and the cam 38 are rotated manually, for example, a lever may be fixed to both ends of the camshaft 19 and the cam 38, and this lever and an air cylinder may be connected. By connecting the cam shaft 19 and the cam 38 with a link mechanism and rotating the cam shaft 19 and the cam 38 at a predetermined timing by operating an air cylinder, it is also possible to automate the gripping and tensioning of the plate.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, in the plate vise device of a printing press, the rear plate vise, which is located in the circumferential notch and holds one end of the plate, is adapted to hold the bent end of the plate. It is formed by a vise stand and a gripping plate having a plate gripping surface extending in the radial direction of the cylinder, and the vise stand and the plate gripping surface end of the gripping plate are swingably connected by a shaft, and the vise The cam has a cam surface facing the base, and when the cam rotates, the plate gripping surface is closed and the plate is held in its mouth at the beginning of the rotation, and the plate is tightened at the end of the rotation. By installing a cam mechanism that moves the force table and the gripping plate in the circumferential direction of the barrel, the gripping and tensioning of the plate by the butt side plate vise, as well as the release and loosening of the plate grip, can be performed by rotating the cam shaft. Since it can be performed continuously by simply moving the machine, preparation time is shortened, productivity is improved, and labor is reduced.

[Brief explanation of drawings]

1 to 6 show an embodiment of a plate vise device for a printing press according to the present invention, FIG. 1 is a plan view of a plate cylinder in which this is implemented, and FIG. Cross-sectional view, Figure 3 is shown in Figure 1.
-■ Cross-sectional view, Figure 4 is the IV-IV cross-sectional view of Figure 1, and Figure 5 is
The figure is a sectional view taken along the line V-■ in FIG. 1, and FIG. 6 is a longitudinal sectional view of the butt-side plate vise before the plate is held in its grip. l... Plate cylinder, 2... Notch, 30... Bottom side plate vise, 33... Vise stand, 35a, 36a-... Cam, 38a... ...Large diameter part, 42, 45°il spring.・Shaft, 35... ・Gripping surface, 38 ・Small diameter part, 38b 46... ・Compression coil

Claims (1)

[Claims] The butt-side plate vise, which is located in the notch around the body and holds one end of the plate, is formed by a vise stand having a plate gripping surface extending in the radial direction of the cylinder so as to hold the bent end of the plate, and a gripping plate. ,
The ends of the vise stand and the gripping plate opposite to the gripping surface are swingably connected to each other by a shaft, and a cam is provided with a cam surface facing the vise stand, and the cam rotates when the cam rotates. In the initial stage, the plate is held with the plate gripping surface closed, and at the end of the rotation, the vise table and the grip plate are integrally moved in the circumferential direction of the cylinder so as to tension the plate. A plate vise device for a printing press, which is characterized by being provided with a plate vise device.