JPS5967055A - Plate backup device for sheet-fed rotary press - Google Patents

Abstract

PURPOSE:To shorten the preparing time, by a method wherein an arcuate form tip surface of each tension bolt for a backup means on the side opposite to the gripper end side is brought into contact with a cam surface on a sliding bar, and all of the tension bolts are simultaneously moved by reciprocating the bar to advance or retract the backup means on the opposite side. CONSTITUTION:A press shaft 15 for the plate backup means on the gripper end side is rotated clockwise, a press plate 10 is opened, a printing plate 14 is inserted between the plate 10 and a plate backup base 6, and reference pin holes are engaged with reference pins of the backup base 6. When the press shaft 15 is rotated counterclockwise, the plate 14 is gripped between the shaft 15 and the backup base 6. The printing plate 14 is thus wound around a form cylinder, is gripped between the press plate and the backup base on the opposite end side in the same procedure as above, and is fastened. Namely, when a plate-fastening pin 32 is rotated, a position indicated by F1 is reached, the sliding bar 28 is moved, bolts 31 making contact with the cam 29 are brought to positions on a high flat surface of the cam 29 through a slanted surface of the cam 29, all of the bolts 31 are moved simultaneously toward the backup means on the gripper end side, the backup means on the opposite end side is drawn toward the side of the backup means on the gripper end side, and the plate 14 is drawn to be pressed against the peripheral surface of the form cylinder. Accordingly, the plate-mounting and plate-dismounting periods are shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plate vise device that grips and holds both ends of a printing plate mounted on a plate cylinder in a sheet-fed rotary printing press.

When a printing plate for printing (hereinafter referred to as a plate) is mounted on the peripheral surface of a plate cylinder of a sheet-fed rotary printing press, one of the pair of plate vises provided in the outer peripheral notch of the plate cylinder is Hold one end of the plate in the grip-side plate vise that leads in the direction of rotation, wrap it around the circumference of the plate cylinder, and then place the plate in the plate vise on the bottom side that lags in the rotation direction of the cylinder. This is done by holding the other end of the stone in your mouth. After the plate is held in the butt side plate vise, the plate vise on the butt side must be pulled in the same direction around the circumference of the body to tighten the plate so that it comes into close contact with the circumferential surface of the body. Conventionally, the following structure has been generally adopted.

In other words, a plurality of bolts with their tips cut out and attached to the wall surface are screwed into the butt side plate vise, and by fully rotating these bolts, the plate vise holding the plate in its mouth can be removed from the bolts. Notch due to screw action @
The plate is tightened by pulling it away from the wall. However, in this case, the same operation must be repeated for several bolts parallel to each other in the width direction of the plate, and in order to even out the plate tightening in the width direction of the plate, the bolts must be tightened little by little. I had to repeat the process of moving on to the next one. Furthermore, since it is difficult to hold a rigid plate under considerable tension, it takes a considerable amount of time to tighten the bolts, so this plate tightening operation conventionally required an extremely large amount of time and effort.

When replacing the plate, this many loosening operations must be repeated even when removing the used plate, and during the time required to replace the plate, it is necessary to tighten the loosened plate. Since the amount of time required is extremely large, there is a need for improvement in the current situation where it is necessary to shorten the preparation time due to the miniaturization of μ-nodes accompanying the diversification of printed matter in recent years.

The present invention is based on the above-mentioned points, and a plurality of tension bolts are screwed in parallel to the bottom plate vise provided in the outer circumferential notch of the plate cylinder, and each tension bolt has an arc shape. the tip surface,
Place M-J on the inclined cam surface of each cam on the slide bar extending along the notch wall surface, and move all the tension bolts at once by reciprocating the slide bar to advance and retreat the butt side vise. By configuring it as such, it is possible to uniformly move the rear vise against the notch wall surface over the entire length in a short time, thereby reducing the preparation time including the time for attaching and dismounting the body, and improving the printing machine. The present invention provides a plate vise system R'fr for sheet-fed rotary printing presses designed to improve operating efficiency. Embodiments of the present invention will be described in detail below with reference to the drawings.

Figures 1 to 6 show an embodiment of the plate vise device according to the present invention, in which Figure 1 is a plan view of the plate cylinder in which the plate vise is carried out, and Figure 2 is the main part of the plate vise on the gripping side. A plan view, Fig. 3 is a sectional view along line AA in Fig. 2, Fig. 4 is a plan view of the main part of the butt plate vise, and Fig. 5 is a sectional view of the plate tightening part, its BB sectional view, and CC sectional view. figure,
FIG. 6 is a DD sectional view of FIG. 4. In the figure, plate cylinder 1
A notch 2 is provided on the outer periphery of the printing plate 1 excluding the bearer 3 at both ends.
A cutout 9 is provided over the entire length of the notch 2, and within this notch 2, a side gripping blade, generally designated by reference numeral 4, and a rear side vise, designated by reference numeral 5, are provided in parallel. A vice 6 having a rectangular cross section and slightly shorter than the entire length of the notch 2 is attached to the side blade 4 of the grip, and a vice 6 with a rectangular cross section, which is slightly shorter than the entire length of the notch 2, is attached to the side edge 4 by a bolt 7 whose head is in contact with the bearer 3. It is positioned and provided between the sides.゛Also, there are multiple grooves (not shown) on the back side of the vice stand 6.
is provided, and by engaging a floating prevention plate (not shown) fixed to the bottom surface of the notch 2 with the groove, the floating of the anchor stand 6 is regulated. In addition, the vise stand 6 is a movable mark in the front, back, left and right directions with respect to the levitation prevention plate.

In addition, at multiple locations in the longitudinal direction of the vise stand 6, bolts 8 for positioning the vise stand 6 in the circumferential direction of the metal plate cylinder 1 have notched tips.
It is screwed into the wall of No. 2 in an abutting manner. Reference numeral 9 denotes an auxiliary bolt that assists the fixed foot after positioning with the bolt 8.

The reference numeral 10 is a long and short glazed holding plate that divides the vice 6 into three along the length and stacks them on top of each other, with two or four glazes perforated in each leg holding plate 10. A bolt 12 is inserted into the bolt hole 11 that has been made, and the threaded part of the bolt 12 is screwed into the threaded hole of the vice stand 6, and the slack is regulated by a set screw (not shown). There is.

A semicylindrical washer 13 is inserted between the head of the bolt 120 and the holding plate 10, and is in contact with the arc-shaped concave surface of the holding plate 100. It is configured to move and hold the plate 14 between it and the vise stand 6. Reference numeral 15 denotes a presser shaft for rotating the presser plate 10, which is rotatably supported by a concave 16 formed over the entire length of the end edge of the vise table 6, and is divided into sections for each leg plate 10. A notch 15 is provided on the outer circumferential surface of the holding plate 10 so that the holding plate 10' can be opened by engaging the edge portion of the holding plate 10 by engaging δ. The presser plate 10 is biased in the opening direction by a compression coil spring 17 loaded into the spring hole of the vise stand 6 and a bottle 18, and a large-diameter portion provided at the medium heat portion of each presser shaft 15 By inserting a handle (not shown) into the handle hole 19 and rotating the presser shaft 15, the presser foot 10 can be removed.
The end line of the presser shaft 150 is selectively engaged with the arc b5 of the presser shaft 150 and the notch 15a to open and close the holding plate 10.

The above has explained the side blade 4, but the butt side vise 5 also includes the structure of the vise base 6 and the holding plate 10, and the b of the holding plate 10.
Since it has the same structure as the closed four-fiber vise, it will be given the same reference numerals and its explanation will be omitted. However, the vise stand 6 of the butt side hook 5 is divided into three long and short parts corresponding to the presser plate 10, and bolts 20 are provided between the vise stands 6 to restrict their movement. . Also both vise 4,
5, i' (:: i': I face 1j, the plurality of pins 22 that were fired by the coil springs 21 are removed).

Next, the structure of the positioning device for the plate 14 will be explained. The plate 14 is provided with U-shaped reference pin holes that open toward the edge at three locations: two on the edge of the mouth side and the center of the edge on the buttock side.
- Both vise 4° and 50 vise 6 and notch 2
A bottle stand 23. A vise stand 6 and a presser plate 10 are cut out between the wall and the bottle stand 23 is positioned and fixed to the bottom of the plate cylinder notch 2.
24 is a reference pin 2 that fits into the reference pin hole of the plate 14.
5°26 is the setting temperature. In addition, the rear vise 5 is equipped with an M narrowing device that pulls and tightens the plate 14, which has been held in the two-sided vises 4 and 5, to the plate cylinder 1 as if it were an indulgence. There is. That is, a groove 21 is provided on the butt side wall surface 2a of the notch 2 and extends over the entire length of the notch 2. A slide par 28 having the same length in the horizontal direction is supported so as to be able to reciprocate in the longitudinal direction. slide par 28
The slide par 2 is integrally formed with four cams 29 each having a cam surface consisting of an inclined surface and a flat surface that follows the slope in the reciprocating direction.
8, a U-shaped top 30 is integrally formed by welding with the entire opening facing toward the center of the body, as shown in a front view in FIG. 5 CC). - Vise stand 6 with vise 5 on the butt side
, each of the four ports 31 has its tip connected to the cam 29.
It is screwed in from the side surface of the mouth so that it can move forward and backward so that it comes into contact with the cam surface of the mouth. The reference numeral 32 denotes a slider 28'ff: a plate tightening pin that can be moved back and forth, and is held in the vice stand 6 in correspondence with the top 30 (it is rotatably inserted from the +11 side). The head 33 has two handle holes 33a for direct firing, and is biased toward the trench 30 by a compression coil spring 34 interposed in the step. The tip of the pin 32 has a fifth
As shown in Figure (c), the pin 32, the Go guard 32a, and the eccentric pin 32b eccentric from the axis F of the pin 32 by an amount indicated by the symbol t in the figure are integrally formed.
4) is engaged with the U-shaped groove of the top 30. By doing this, when the plate clamping pin 32 is rotated approximately 20 degrees clockwise from the position shown in FIG. 5 in the clockwise direction as shown in FIG. about 20 minutes in the direction
The slider 28, which has rotated 0° and is engaged with the eccentric pin 32b through the entire top 30, moves to the left in the figure by twice t, resulting in the state shown in FIG. Therefore, the bolt 31 that was facing the lower part of the six-piece 29 moves up the slope '(r) of the cam 29 and faces the flat part, and as the port 31 moves, the entire butt side vise 5 is held in its mouth by the lift of the cam 29. In order to make this movement completely smooth, the sliding surface of the bolt 31 against the cam 29 is formed into an arc shape, and as shown in Fig. 5 (c). ), each relative position is set so that the eccentric pin 32b rotates a little more than 18o0, passes the dead center, and then comes into contact with the bottom of the U-shaped groove of the top 30 at both ends of rotation. If the port 31 is further rotated from the state shown in FIG.
can be pulled further towards the mouth. 35 is inserted between the vise stand 6 and the wall of the notch @2, and the vise stand 6 is inserted into the plate 1.
This is a block gauge that is used for positioning before installing No. 4.

Plate mounting operation 1 on the plate cylinder configured as above [
I will clarify. First, before assembling the pin bases 23 and 24'' in a vise of 4°5, accurately position and fix them on the bottom of the notch 2, and place the reference pins 25 and 2La accurately in relation to the axis of the plate cylinder 1. After positioning, support the vices 4 and 5 on the bottom of the notch 2 so that they can be moved forward, backward, left, and right, and use the block gauge 35 to position them so that they are parallel to the wall of the notch 2.
, Temporarily fix at 9°20. After preparing in this way, when the handle is inserted into the large diameter portion 19 of the presser shaft 15 of the side gripper blade 4 and rotated clockwise from the position shown in FIG. 5, the end edge of the presser plate 10 corresponds to the notch 15a of the presser shaft 15, so the presser plate 10 is opened by the elastic force of the compression coil spring 17. Therefore, insert the
to fit. When the presser shaft 15 is rotated in the counterclockwise direction in FIG. The plate 14 is rotated against the force and holds the plate 14 between it and the vise stand 6. In this way, each foot shaft 15 is rotated in sequence to grip the plate 14, and then the plate 14 is all wrapped around the circumferential surface of the plate cylinder 1, and the plate 1
The reference pin hole 4 is fitted into the reference pin 26 on the rear side, and the plate 14 is held between the presser plate 10 on the rear side and the vice stand 6 in the same procedure as on the gripping side. In this state, the plate 14 is loose and does not come into close contact with the circumferential surface of the cylinder, so the plate is tightened after the temporary fixation with the bolts 7 is released.

That is, when the plate clamping pin is rotated approximately 200° clockwise in FIG. 5(e) in the state shown in FIG. 5, the eccentric pin 32b
The top 30, which is engaged with this in a U-shaped groove, rotates around the axis F of the pin 32 by about 200° while moving to the left in the full view, and reaches the position indicated by the symbol F1 in the figure. Therefore, the slider 28 moves, and the bolt 31 that was in contact with the lower part of the cam 29 ascends the inclined 6-1 surface of the cam 29 and comes into contact with the plane of the connecting part of the cam 29, as shown in FIG. All the bolts 31 are gripped together and moved in the direction of the lateral force 4. This causes the butt vise 5 to be held in the mouth and pulled toward the side blade 4.
The first plate 14 is pulled and comes into close contact with the surface of the plate cylinder 1.

After this, if the plate 14 is too tight, the bolts 31 are tightened individually, but by operating the plate tightening bolts 32, the plate 14 is tightened.
Since the bolt 310 is highly tensioned, the rotation stroke of the bolt 310 only needs to be small. Note that when the plate 14 is stretched, the eccentric pin 32b has passed the dead center until it comes into contact with the bottom of the U-shaped groove, so that a stable state is maintained.

The above description has been about attaching the plate 14 to the seventh plate cylinder 1, but when removing the plate 14, first slightly loosen the bolt 31 that was tensioning the plate 14, and a gap will be created between it and the cam 29. By rotating the plate tightening bolt 32 in the opposite direction for plate tightening, the plate 14 is completely loosened. After that, the plate 14 is removed by opening the holding plate 10 of the vise on the butt side and the grip side 11i.

Note that the reciprocating means of the slider 28 is not limited to the structure of this embodiment, and for example, the structure of the reciprocating means of the slider 28 is
It is also possible to adopt a structure in which the slide nozzles 28 are pushed and pulled from the outside using screws or the like.

As is clear from the above description, according to the present invention, in a plate vise device for a sheet-fed rotary printing press, the arc-shaped tip surfaces of a plurality of bolts screwed in parallel into the rear vise are connected to the notch wall surface. The slide bar extended along the (-) valley cam is placed in contact with the inclined cam surface, and the reciprocating movement of the slide bar moves all the bolts at once, moving the rear vise forward and backward. When attaching and detaching the plate, there is no need to rotate the many holes that have to be tightened like in the past, which greatly shortens the time and labor required for attaching and detaching the plate. Since the force moves evenly over the entire length and the plate does not twist 9, there is less registration time at the start of printing, and the direct time for the plate to come off 1 m, and the non-printing time of the entire machine are significantly shortened. As a result, the operating rate of the printing press can be improved, and the current trend of small-lot production due to diversification of printing can be dealt with efficiently and with cylinder quality, which has a remarkable effect.

[Brief explanation of drawings]

1 to 6 show an embodiment of a plate vise device for a sheet-fed rotary printing press according to the present invention, FIG. 1 is a plan view of a plate cylinder implementing this method, and FIG. A plan view of the main part of the plate vise, Fig. 3 is a sectional view taken along line AA in Fig. 2, Fig. 4 is a plan view of the main part of the plate vise on the bottom side, and Fig. 5 (a) is a sectional view of the plate tightening operation part. , Figure 5~)
is the BB sectional view of Figure 5(a), and Figure 5(e) is the BB cross-sectional view of Figure 5(a).
a) is a CC sectional view, and FIG. 6 is a DD sectional view of FIG. 4. 1... Plate cylinder, 2... Φ/notch, 2a... Bottom side wall surface, 5... Bottom side vise, 14... Plate, 28...
...Slide bar, 29@@ll'll cam, 30...
・e? C 塘, 31, Φ, bolt, 32, plate tightening pin, 32b, eccentric pin, 34, compression coil spring. Procedural amendment ar. Director G D's ``”' ”
"8'U-581, Jff Cow Indication 1982 Patent Application No. 178152 2, Title of Invention Plate vise device 3 for sheet-fed rotary printing press, Relationship with the case of the person making the amendment Patent Amendment by applicant It's a command, you're a □-day;: Showa year
The number of inventions that increases due to the date correction... (1) Two orthogonal inventions in the third line from the bottom of page 8 of the specification.
Delete. (21 Figure 5 (b) is corrected in the attached sheet. Above Figure 5-335-

Claims (1)

[Claims] A plate vise for a sheet-fed rotary printing press that holds the entire bottom side of the printing plate in its grip.The plate vise for a sheet-fed rotary printing press tensions and loosens the printing plate by moving it in the circumferential direction of the plate cylinder within a notch on the outer periphery of the plate cylinder. 2 on the power device,
a plurality of tension bolts arranged in parallel in the longitudinal direction of the plate vise and screwed into the plate vise with one arc-shaped end face facing the plate grip side wall surface of the outer peripheral notch; and the plate grip side The slide has a slide bar extending reciprocatingly along the wall surface, and a cam surface that slopes vertically in the direction of the reciprocating movement of the slide bar and slides into contact with the arcuate end surface of each of the tension bolts. A plurality of cams integrally formed on the bar, a spring member for biasing the plate vise toward the wall surface of the plate grip, and means for reciprocating the slide bar are provided. Plate vise device for sheet-fed rotary printing presses.