JPH038441Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plate mounting device for mounting and fixing a printing plate for lithographic offset printing or the like on a printing press plate cylinder.

Conventionally, a plate mounting device for mounting and fixing a sheet-like printing plate on the plate cylinder of a printing press has a notch of a predetermined width cut out in the plate cylinder peripheral surface 1 in the plate cylinder axial direction, as shown in FIG. A plate clamp base plate 6 and a plate clamp base plate 7 for fixing the front and rear ends of the printing plate wound around the plate cylinder peripheral surface 1 are provided on the bottom surface 3 of the plate cylinder 2.
A plate clamp claw plate 12 is supported by a shaft 9 on the base plates 6 and 7 and can be opened and closed with respect to the base plate, respectively.
Plate clamp cams 10 and 1 which lift the rear end of 2 and press the tip thereof onto base plates 6 and 7, respectively.
0, interposed between the side surfaces 4 and 5 of the notch 2 and the clamp base plates 6 and 7 opposing thereto, and supported by a shaft 16 in the bearings 17 of the clamp base plates 6 and 7, By rotating the shaft 16, the clamp base plate 6,
A plate tensioning cam 15 for moving the plate 7 is provided. Opening/closing of the plate clamp claw plate 12 and movement of the base plates 6 and 7 are performed by a rotary operating section 14 provided at an appropriate location on the shaft 9 and a rotating operating section 18 provided at one end of the shaft 16.
This was done by rotating it with a tool.

However, in order to press the tip of the clamp claw plate against the base plate to clamp the plate and fix it to the plate cylinder, and further to move the clamp base plate in the plate tensioning direction to tension and mount the plate, the rotation operating portion 14 is used. , 18, it is necessary to rotate the cams 10 and 15 by fitting an auxiliary tool such as an insert tool into the cams 10 and 15, and it is necessary to insert and remove the tool each time. Further, since the process is carried out by hand using a special tool, there are problems such as the difficulty in always clamping and mounting the plate with a predetermined clamping force and tensile force.

The present invention solves the above-mentioned inconveniences and makes it possible to smoothly mount a sheet-like printing plate onto a plate cylinder, thereby allowing quick and stable operation.

If the present invention is explained according to FIGS. 3 and 4,
A plate clamp base plate 6 and a plate clamp base plate for fixing the front and rear ends of the printing plate wound around the plate cylinder circumferential surface 1 to a notch 2 of a predetermined width cut out in the plate cylinder axial direction on the plate cylinder circumferential surface 1. 7, which are supported by a shaft 11 on the base plates 6 and 7, and a plate clamp claw plate 12 which can be opened and closed with respect to the base plate, respectively, and a shaft 9 is attached to the bearing 8 of the base plates 6 and 7. Plate clamping cams 10, 10 are pivotally supported and lift the rear end of the claw plate 12 and press their tips onto the base plates 6, 7, respectively, the side surface 4 of the notch 2, and the clamp facing this A plate tensioning cam 15 is provided between the clamp base plate 6 and the clamp base plate 6, is pivotally supported by a shaft 16 on a bearing 17 of the clamp base plate 6, and is configured to move the clamp base plate 6 by rotation of the shaft 16. , plate clamp cam rotation handles 19 and 20 for rotating the shaft 9 at appropriate locations on the shaft 9 on the base plate 6 side and at the end of the shaft 9 on the base plate 7 side, respectively; and the end of the shaft 16. A handle 21 for rotating the plate tension cam is provided so as to be able to be stored inside the rotation circle of the plate cylinder, and the handle 19 is in the storage position.
This is a plate mounting device for a plate cylinder of a printing press, characterized in that a camshaft 9 on the side of the base plate 7 is provided on the inner side.

The device of the present invention will be explained in detail according to the drawings.
FIG. 4 The clamp claw plate 12 is opened and closed with respect to the clamp base plates 6 and 7 by the rotation of the cam 10, and one clamp base plate 6 is slid against the bottom surface 3 of the fitting part 1.
3, the other clamp base plate 7 is attached and fixed to the bottom surface 3 in close contact with the wall surface 5 of the notch 2. Like the base plate 6, it may be made to be able to slide with respect to the bottom surface 3. Shafts 9 and 11 are supported on the bearing 8 of the base plate 6, and a shaft 11 is supported on the bearing 8 of the base plate 7 at substantially equal distances from the bottom surface 3, respectively. In addition, the bearing 8 of the clamp base plate 7 has a shaft 9.
is located lower than each of the axes with respect to the bottom surface 3,
The cam 10 of the shaft 9 on the base plate 7 lifts the rear end of the clamp claw plate 12 by its maximum diameter, and when pressing the tip of the upper plate 12 against the base plate 7, the cam 10 of the shaft 9 on the base plate 6 The attached handle 19 is adapted to be stored in the storage position. Fig. 3: A cam 10 for each of the base plates 6 and 7 that opens and closes the claw plate 12, and a cam 15 for moving the base plate 6 and pulling the plate, each having a handle 19, 20 and a handle 21 on the shafts 9 and 16, respectively. There is. The handle 19 on the base plate 6 side is pushed into the upper side of the claw plate 12 on the base plate 7 side, and is fixed by a fixing magnet 22 attached to a bearing (not shown) that pivotally supports the shaft 9 on the lower side of the handle 19. It's summery. Handle 20, 21
can be stored between the sides of the base plates 6 and 7 and the plate cylinder bearer 23, and the fixing magnet 2 attached to the bottom surface 3
2 to be fixed.

Next, the plate mounting method using the device of the present invention will be explained in detail according to an embodiment. First, the handle 20 of the mounting device shown in FIG. is opened, the front end of the sheet-like printing plate P is inserted between the base plate 7 and the claw plate 12 from above, and the handle 21 is pushed into the plate cylinder side and clamped.
The handle 21 is fixed by a fixing magnet 22.

Next, the plate cylinder a is rotated one turn by slow rotation or inching rotation and then stopped, the handles 19 and 21 are pulled toward the front side of the plate cylinder a, the claw plate 12 of the clamp base plate 6 is opened, and the base plate 6 is cut out. Move the rear end of the printing plate P to the wall surface 4 side of the section 2, and place the rear end of the printing plate P between the clamp base plate 6 and the claw plate 1.
2, insert the plate from below while pressing it against the circumferential surface 1 without loosening the plate. The handle 19 is pushed into the plate cylinder a side to the storage position, the claw plate 12 is closed, and the rear end of the plate is clamped. The handle 19 is fixed by a fixing magnet 22. After securing the plate by clamping its front and rear ends and winding it around the plate cylinder,
While pushing the plate tensioning handle 21 to the storage position on the plate cylinder a side, the clamp base plate 6 is moved, and the plate P is tensioned and attached to the plate cylinder peripheral surface 1 by pulling it. The handle 21 is fixed by a fixing magnet 22.

In the device of the present invention, handles are provided on the claw plate opening/closing camshaft that clamps the front and rear ends of the printing plate and the plate tensioning camshaft, and the inner metal surface of the handle is magnetically attached by a fixing magnet to fix the plate. The handle can be stored inside the rotation circle of the cylinder, which eliminates the need to use special work tools and other auxiliary tools when installing the plate, and allows the plate to be installed smoothly, quickly, stably and reliably. It is possible to carry out mounting.

[Brief explanation of drawings]

FIG. 1 is a front view of a conventional plate mounting device, FIG. 2 is a side view of FIG. 1, FIG. 3 is a front view of the device of the present invention, and FIG. 4 is a side view of FIG. 3. be. 1... Plate cylinder circumferential surface, 2... Notch, 6, 7... Clamp base plate, 8... Bearing, 9... Shaft, 10... Cam, 11... Shaft, 12... Clamp claw plate, 15...
...Cam, 16...Shaft, 17...Bearing, 20, 21
...Handle, 22...Fixed magnet.

Claims (1)

[Scope of utility model registration request] A clamp base plate 6 and a clamp base plate 7 fix the front and rear ends of the printing plate wound around the plate cylinder circumferential surface 1 to a notch 2 of a predetermined width cut out in the plate cylinder axial direction on the plate cylinder circumferential surface 1.
A plate clamp claw plate 12 is supported by a shaft 11 on the base plates 6 and 7 and can be opened and closed relative to the base plate, and a shaft 9 is attached to the bearing 8 of the base plates 6 and 7. plate clamping cams 10, 10 that are supported and lift the rear end of the upper plate 12 and press their tips onto the base plates 6, 7, respectively, the side surface 4 of the cutout 2, and the clamp base opposite thereto; A plate tensioning cam 15 is provided between the plate 6 and the clamp base plate 6, is pivotally supported by a shaft 16 in a bearing 17 of the clamp base plate 6, and is configured to move the clamp base plate 6 by rotation of the shaft 16. Plate clamp cam rotation handles 19 and 20 are provided at appropriate locations on the shaft 9 on the base plate 6 side and at the end of the shaft 9 on the base plate 7 side, respectively, for rotating the shaft 9, and at the end of the shaft 16. A handle 21 for rotating the plate tension cam is provided so as to be able to be stored inside the rotation circle of the plate cylinder, and the handle 19 is in the storage position.
A plate mounting device for a plate cylinder of a printing press, characterized in that a cam shaft 9 on the side of the base plate 7 is provided on the inner side.