JPH0536687Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a plate bending machine for a printing press that bends both ends of a printing plate at a predetermined angle before being attached to the peripheral surface of a printing press.

[Conventional technology]

When a printing plate for printing (hereinafter referred to as a plate) is mounted on the plate cylinder of a printing press, the plate is placed on the surface plate of a separately provided plate bending machine, and its gripping side and bottom side are The work is performed by holding down the presser with a presser mechanism, and bending the gripper side and the butt side of the presser at a predetermined angle with a bending mechanism. Then, the bent plate is wrapped around the circumferential surface of the cylinder, and both bent ends are held by a plate winding device in the notch around the cylinder circumference and tightened.

[Problem that the invention attempts to solve]

However, in this type of conventional plate bending machine, in order to operate a total of four levers, the plate holding levers on the gripper side and the bottom side, and the plate bending levers on the gripper side and the bottom side, a total of four levers are required on the gripper side of the machine base. Since it is necessary to go back and forth between the front side and the bottom side many times each time one plate is bent, there is a problem in that it is a burden on the operator and the working time is extended.

[Means for solving problems]

In order to solve these problems, the present invention provides an operating shaft that is drive-coupled with and orthogonal to the drive shaft for the bottom side presser mechanism that extends along the bottom side of the machine.
The operating member is fixed to the end of the machine by extending to the machine's grip side, and the operating end of the operating handle for the butt side plate bending mechanism is made to face the machine's grip side.

[Effect]

After placing and fixing the plate on the surface plate, when the operation member for the plate presser is operated on the gripper side, the presser mechanism on the gripper side and the presser mechanism on the bottom side, which are connected by the drive shaft, operate simultaneously and press the plate. The grip side and butt side of the machine are pressed against the surface plate. Next, the plate bending operation member on the gripping side is operated to bend the gripping side of the plate, and then the plate bending operation handle on the bottom side extending to the gripping side is operated to bend the bottom side of the plate. After bending the plate, each member is returned to its original position by the reverse operation described above, and the plate is released from the presser.

〔Example〕

1 to 6 show an embodiment of a printing press plate bending machine according to the present invention, FIG. 1 is a plan view thereof, FIG. 2 is a side view from A in FIG. 1, and FIG. B in Figure 1
Figure 4 is a perspective view, Figure 5 is a side view of Figure 1.
The CC sectional view and FIG. 6 are the DD sectional view of FIG. 1.
In the figure, a surface plate 1 is formed of a base plate 2, a gripper side surface plate 3 and a bottom side surface plate 4 placed and fixed on the base plate 2, and vertical bearings and mounting plates are provided on the four corner sides of the base plate 2. A gripper-side bearing 5 integrally formed with
6 and rear bearings 7 and 8 are bolted to each other. 9, 10 and 11, 12 are each bearing 5,
6, 7, and 8 are vertically movable support shafts, one pair each for the gripper side and the butt side. The support shafts 11 and 12 are shown rising. At the upper ends of the left and right gripper side support shafts 9, 10,
The block portions 13b at both ends of the plate holding plate 13, which has a plurality of ribs 13a and has an inverted T-shaped cross section, are fixed, and the plate holding plate 13 and the left and right support shafts 9, 10 move up and down as one. It is configured as follows. Also, both end block portions 14b of a long plate holding plate 14 having an inverted T-shaped cross section and having a plurality of ribs 14a are fixed to the upper ends of the left and right butt side support shafts 11 and 12. The left and right support shafts 11 and 12 move up and down in unison.

Next, the plate positioning device and plate holding device will be explained. A pair of left and right positioning devices, generally designated by reference numeral 15, are supported on the grip side end surface of the surface plate 1 by bolting the brackets 16, and the brackets 16 have projections 17 at their tips.
Locating pin 1 with handle 17b with a
7 is supported by a shaft so as to be vertically movable, and is constructed such that its vertical movement is lightly stopped by a magnet mechanism at an upper limit position shown by a solid line in the figure and a lower limit position shown by a chain line in the figure. Reference numeral 18 refers to a plate placed on the flat surface of the surface plate 1, with its grip side and bottom side ends protruding from the surface plate 1, and a pair of left and right plates 18 on the grip side end. A punch hole is drilled at a predetermined position. By doing so, the plate 18 is positioned on the surface plate 1 and placed at a predetermined position by engaging the punch hole with the protrusion 17a of the raised positioning pin 17 and placing the plate 18 thereon. In addition,
Although shown only in FIG. 4 and omitting detailed explanation,
At locations corresponding to both ends of the central portion of the plate 18, holding devices 19 with register marks for holding down the positioned plate 18 are provided.

Each of the grip side bearings 5 and 6 has a shaft hole 20,
Bearing portions 5a and 6a each having a diameter of 21 are integrally formed, and a connecting shaft 22 extending parallel to the gripper side end surface of the surface plate 1 is provided in the shaft holes 20 and 21.
Both ends are rotatably supported. Further, an operating shaft 24 having a handle 23 pivoted on the protruding end is supported perpendicularly to the connecting shaft 22 on one of the bearings 5a, and a worm 25 pivoted on the operating shaft 24. , which is pivotally attached to the connecting shaft 22 and meshes with the worm wheel 26. Furthermore, the connecting shaft 22
levers 27 and 28 fixed to both ends of the
are each block 13b at both ends of the plate holding plate 13.
The free ends of the links 29 and 30 are pivotally connected to each other, and the levers 27 and 28 and the links 29 and 30 form the three-bar links 31 and 32.
is formed. By doing this, when the handle 23 is rotated, the connecting shaft 22 is rotated through the engagement between the worm 25 and the worm wheel 26, and the three-bar links 31 and 32 on both sides make the same link movement to connect the blocks 13b on both sides. plate holding plate 1 having
3 is configured to move up and down while maintaining a horizontal state. When the plate holding plate 13 is in the lowered position, the gripping side of the plate 18 is pressed and fixed to the surface plate 1. Furthermore, shaft holes 33 and 34 are provided in each of the bearings 7 and 8 on the butt side.
Bearing portions 7a and 8a, respectively, are integrally formed, and both ends of a connecting shaft 35 extending parallel to the bottom end surface of the surface plate 1 are rotatably supported in the shaft holes 33 and 34. There is. On the other hand, an operating shaft 39 with a handle 38 is connected to the connecting shaft 35 in the shaft holes 36 and 37 provided in the grip side bearing 6 and the butt side bearing 8 on one side.
The worm 40 is rotatably supported above and perpendicular to the operating shaft 39, and the worm 40 is pivotally mounted on the operating shaft 39 and meshes with a worm wheel 41 that is pivotally mounted on the connecting shaft 35. Furthermore, both ends of the connecting shaft 35 and both end blocks 14b of the rear plate presser plate 14 are as follows.
They are connected by three-bar links 46 and 47, each consisting of levers 42, 43 and links 44, 45, which have the same structure as the three-bar links 31, 32 on the gripping side. By doing this, when the handle 38 is rotated, the operating shaft 39 rotates and the connecting shaft 35 rotates due to the engagement between the worm 40 and the worm wheel 41, and the three-bar links 46 and 47 on both sides perform the same link movement. The plate holding plate 14 having the blocks 14b on both sides is configured to descend while maintaining a horizontal state. Then, in the lowered position of the plate holding plate 14, the bottom side of the plate 18 is pressed and fixed to the surface plate 1.

Next, the plate bending device will be explained. As shown in FIG. 5, a triangular plate bending guide 3a having a predetermined angle indicated by the symbol θ in the figure is formed at the grip side end of the upper end surface of the surface plate 1 over the entire width of the surface plate 1. The plate 18 is bent along this guide 3a. That is, in each block 13b on both sides,
Bearings 48 and 49 formed in an inverted L shape are fixed with a plurality of bolts 50.
is provided with a shaft hole 51 coaxial with a radius formed at the tip of the guide 3a of the surface plate 1. Reference numeral 52 denotes a plate bending bar formed in the shape of a long plate with a rectangular cross section, and has end shafts 53 fitted and fixed in shaft holes at both ends.
54 is rotatably supported in a shaft hole 51, and a thin liner 55 is adhered to the lower end of the plate bending bar 52 so as to be in contact with the plate 18 over its entire length. This plate bending bar 52 is moved to the position shown by the solid line and chain line in FIG. 5 around the end shafts 53 and 54 by gripping and rotating the handles 56 provided in the two notches at the upper end. It is configured to bend the plate 18 by rising and falling and the liner 55 rotating. Reference numeral 57 denotes a stopper with a knob pivotally attached to the plate holding plate 13, which engages with a groove 59 formed in the narrow portion 58 when the plate bending bar 52 is raised, and when the plate bending bar 52 is laid down. In this case, the stopper 57 is flipped up to disengage from the groove 59 and then laid down.

On the other hand, as shown in FIG. 6, a plate bending guide 4a having a dogleg-shaped edge at a predetermined angle, indicated by the symbol θ ₁ in the figure, is provided at the rear end of the upper end of the surface plate 1. It is formed over the entire width, and the plate 18 is bent along this guide 4a. That is, each block 14b on both sides has a bearing 6 formed in an inverted L shape.
0 and 61 are fixed with a plurality of bolts 62, and each bearing 60 and 61 is provided with a guide 4a of the surface plate 1.
A shaft hole 63 is provided that is coaxial with the radius formed at the tip. Reference numeral 64 is a plate bending bar formed in the shape of a long plate with a rectangular cross section, and end shafts 65 and 66 fitted and fixed in shaft holes at both ends are rotatably supported in the shaft hole 63. At the lower end of this plate bending bar 64, bars 67 and 68 of the same length are attached to bolts 69.
and a countersunk screw 70. The lower end edges of the bars 67, 68 are formed in a U-shape to match the end edge of the guide 4a. One end shaft 65 of the both end shafts 65 and 66 is connected to the bearing 6
0, and an operating lever 71 is pivoted to this protruding portion with a handle 72 at the tip facing the grip side. By rotating clockwise from the position shown, the plate bending bar 64 rotates as shown by the chain line in FIG. 6, and the bars 67 and 68 bend the plate 18 so that it follows the guide 4a. It is configured. A stopper 73 is slidably supported in a pin hole of a support fitting 74 bolted to the block 14b and is biased outwardly by a compression coil spring 75. Its rotation is regulated, and when the operating lever 71 is rotated, the stopper 73 is slid against the elastic force of the compression coil spring 75 to disengage from the operating lever 71. ing.

The plate bending operation by the plate bending machine configured as above will be explained. After the left and right positioning pins 17 are raised and locked by the magnetic mechanism, the plate 18 is placed on the surface plate 1 with the punched holes engaged with the protrusions 17a of the positioning pins 17. After holding down the central part of the plate 18 with the holding device 19, when the handle 23 is rotated from the gripping side, the connecting shaft 22 rotates due to the engagement between the worm 25 and the worm wheel 26, so that both sides of the plate 18 are rotated. 3rd section link 31,
32 make the same link movement at the same time, and their upper ends are pivotally connected to the left and right blocks 13b.
descends and holds the grip side of the plate 18 and fixes it to the surface plate 1. Also located on the gripping side is the handle 38.
When the operation shaft 39 is rotated, the connecting shaft 35 on the butt side rotates due to the engagement between the worm 40 and the worm wheel 41, so the three-bar links 46 and 47 on both sides simultaneously perform the same link movement. Then, the plate holding plate 14 whose upper ends are pivotally connected to the left and right blocks 14b descends to press the bottom side of the plate 18 and fix it to the surface plate 1. After fixing the plate 18 in this way,
The positioning pin 17 is lowered and removed from the punch hole of the plate 18, and then the plate is bent. In other words, after flipping up the stopper 57 to disengage it from the groove 59, by grasping the handle 56 and rotating the plate bending bar 52 toward the front side, the liner will move as shown by the chain line in FIG. 55 guides the gripper side edge of the plate 18 to the guide 3
It goes around while bending along the guide 3a, and bends it at the same angle as the guide 3a. Next, the stopper 73 is slid against the elastic force of the compression coil spring 75 to close the operating lever 7.
1 and then move the operating lever 71 to the gripping side and rotate it, the end shaft 65 rotates and the plate bending bar 64 rotates from the solid line position to the chain line position in FIG. 6. Therefore, the rear end of the plate 18 is bent along the guide 4b by the circulating bars 67 and 68, and is bent into the same predetermined shape as the guide 4b. After bending the plate 18 in this manner, the plate bending bar 52 and the operating lever 71 are rotated in the opposite direction to the plate bending direction to return to the solid line position in FIG. 5, and the stoppers 57, 73 are rotated. Operate the plate bending bar 5
2 and the operating lever 71 are locked. When the left and right handles 23, 38 are rotated in the opposite direction to the direction of the plate presser, the plate presser plate 13 on the grip side and the plate presser plate 14 on the tail side rise to release the plate 18 from the presser foot. , and further operates the presser device 19 in the center to release the presser in the center. As a result, the plate 18 can be removed and the plate bending operation is completed. Each of the above operations can be performed without moving around to the rear of the machine.

[Effect of idea]

As is clear from the above explanation, according to the present invention, in a plate bending machine for a printing press, an operating shaft is drivingly connected to and perpendicular to the drive shaft for the bottom side presser mechanism that extends along the bottom side of the machine. is extended to the machine's grip side and the operating member is fixed to the end of the machine's grip, and the operating end of the operation handle for the butt side plate bending mechanism is made to face the machine's grip side. Since the holding mechanism and bending mechanism for the plate placed on the machine can all be operated from the grip side of the machine, it is possible to reduce labor and operation time. Also,
There is no need to provide a work space on the butt side of the machine,
The installation space for the machine is reduced.

[Brief explanation of the drawing]

1 to 6 show an embodiment of a printing press plate bending machine according to the present invention, FIG. 1 is a plan view thereof, FIG. 2 is a side view from A in FIG. 1, and FIG. B in Figure 1
Figure 4 is a perspective view, Figure 5 is a side view of Figure 1.
The CC sectional view and FIG. 6 are the DD sectional view of FIG. 1. 1... Surface plate, 3... Grip side surface plate, 3a... Guide, 4... Bottom side surface plate, 4a... Guide for plate bending, 5, 6, 7, 8... Bearing, 9, 10, 11,
12... Support shaft, 13, 14... Plate holding plate, 18...
...Version, 20, 21...Shaft hole, 22...Connection shaft, 2
3...Handle, 24...Operation axis, 25...Worm, 26...Worm foil, 31, 32...
3-section link, 33, 34...Shaft hole, 35...Connection shaft, 36, 37...Shaft hole, 38...Handle, 3
9... Operating axis, 40... Worm, 41... Worm foil, 46, 47... 3-section link, 48,
49... bearing, 51... shaft hole, 52... plate bending bar, 53, 54... end shaft, 60, 61... bearing,
63...Shaft hole, 64...Bend bending bar, 65, 66
... End shaft, 71 ... Operation lever.

Claims (1)

[Scope of utility model registration request] A plate for a printing press that is equipped with a holding mechanism that presses the grip side and bottom side of a printing plate placed and fixed on a plate bending plate, and a bending mechanism that bends the grip side and bottom side of the pressed printing plate. In a bending machine, an operation shaft is drivingly connected to and orthogonal to the drive shaft for the rear presser mechanism extending along the rear side of the machine base, and an operating shaft is installed to extend toward the machine base gripper side to form a gripper side end thereof. A plate bending machine for a printing press, characterized in that an operating member is fixed to the plate bending machine, and an operating end of the operating handle for the rear plate bending mechanism faces the machine gripping side.