JP2541746B2 - Plate cylinder device in rotary printing press - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate cylinder device for a rotary printing press.

[0002]

2. Description of the Related Art As a device of this type, Japanese Patent Laid-Open No.
The one disclosed in Japanese Patent No. 279347 is proposed. But,
In this device, the circumferential direction adjusting means of the plate cylinder body and the shell cylinder are separately arranged on one journal side, that is, the driving side of the plate cylinder body, and the axial direction adjusting means of the plate cylinder body and the shell cylinder are respectively distributed on the operating side. Therefore, the adjustment shaft must be provided so as to penetrate in the axial direction of the plate cylinder main body. Therefore, processing and assembly work of the long hole through which this adjustment shaft penetrates,
There is a problem that the cost increases due to factors such as difficulty in securing processing accuracy and complexity of structure.

Therefore, according to the present invention, in the plate cylinder device of the rotary printing press as described above, it is not necessary to provide the adjusting shaft penetrating in the axial direction of the plate cylinder main body, and the structure can be simplified and the manufacturing cost can be reduced. An object is to provide a trunk device.

[0004]

In order to achieve the above object, the invention of claim 1 is a plate cylinder device for a rotary printing press as described above, wherein both journals of the plate cylinder main body are provided on the drive side frame and the operation side frame. Rotatably and movably in the axial direction, one of the journals is projected from the drive-side frame, and the helical gear is attached to the projected end so as to be movable only in the axial direction. A plate cylinder body circumferential direction adjusting means for moving the plate cylinder body in the circumferential direction is provided. An adjusting shaft is rotatably and axially movably provided in the inner hole of one of the journals, and one end of the adjusting shaft is connected to a shell cylinder via a coupling member, and a helical gear is axially attached to the other end. There is provided shell cylinder circumferential direction adjusting means for movably mounting the helical gear and moving the helical gear in the axial direction to adjust the circumferential direction of the shell cylinder. Further, a shell cylinder axial direction adjusting means for adjusting the axial direction of the shell cylinder by moving the adjusting shaft in the axial direction is provided at the other end of the adjusting shaft. Further, the other journal serving as the operation side frame is provided with a plate cylinder main body axial direction adjusting means for axially adjusting the plate cylinder main body by moving the journal in the axial direction.

[0005]

As described above, the plate cylinder body circumferential direction adjusting means, the shell cylinder circumferential direction adjusting means and the shell cylinder axial direction adjusting means are provided on the driving side, and the plate cylinder body axial direction adjusting means is provided on the operating side. With this configuration, it is not necessary to provide the adjustment shaft in the axial direction of the plate cylinder main body.

[0006]

1 is a schematic sectional view showing an embodiment of the present invention in which one half of a plate cylinder of an offset rotary press is a so-called shell cylinder (divided plate cylinder). In FIG. 1, reference numeral 1 designates a plate cylinder, one half of which has a smaller diameter than the opposite side portion 2, and a plate cylinder main body 3 having an outer peripheral surface 2a for mounting a plate on the opposite side portion, and this plate cylinder An outer peripheral surface 5a, which is rotatably and axially movably fitted to the reduced-diameter portion 4 of the main body 3, has the same outer diameter as the opposite-side portion 2, and on which the plate is mounted.
And a cylindrical shell cylinder 5 having The shell cylinder 5 is arranged on the driving side A, and the plate cylinder body 3 is arranged on the operating side B.

Numerals 7 and 8 are journals on the driving side A and the operating side B of the plate cylinder main body 3, which are rotatably supported by the left and right frames 9 and 10 via bearings 11 and 12. Also journal 7,
Reference numeral 8 indicates bearings 11 and 12, and fitting holes 13 and 14 on the frames 9 and 10.
It is movable in the axial direction via sleeves 15 and 16 mounted on the. Reference numeral 18 is a blanket cylinder, 19 and 20 are journals of the blanket cylinder 18, journals of the plate cylinder body 3,
Similarly to the No. 8, it is supported via bearings 21 and 22. 23, 24
Is a sleeve. A helical gear 26 is fixed to the end of the journal 19 protruding from the frame 9. on the other hand,
A helical gear 27 that meshes with the helical gear 26 is attached to the end of the journal 7 protruding from the frame 9 by a spline 28 so as to be movable in the axial direction.

The shell cylinder 5 is connected to the adjusting shaft 31 by a coupling member 30 which penetrates through the hole 29 of the journal 7 and is not buffered (impacts) during circumferential and axial registration. ing. The adjusting shaft 31 is supported by the inner hole portion 33 of the journal 7 so as to be rotatable and axially movable. Further, the adjusting shaft 31 is the inner hole 33 of the journal 7.
A helical gear 35 that meshes with the helical gear 26 is attached to this one end by a spline 36 so as to be movable in the axial direction. Reference numeral 37 denotes a screw shaft whose one end is connected to a shaft hole 38 formed at one end of the adjusting shaft 31 via a bearing 39. One end of the screw shaft 37 has a helical gear 35 on the outer peripheral surface.
And a hollow screw shaft 41 connected via a bearing 40 is fitted therein, and this screw shaft 41 is formed with a male screw portion 41a that is screwed into a female screw portion 42a formed on a frame 42 fixed to the frame 9. ing.

The helical gear 27 includes a plurality of guide rods in the axial direction.
43 are provided, these guide rods 43 penetrate through the same number of through holes 44 formed in the helical gear 35, and a connecting member 45 is attached to the tip end thereof. This connecting member 45 is connected via a bearing 46 to a spur gear 47 screwed with the external thread 41a of the screw shaft 41,
The spur gear 47 is connected to the motor 50 via the gear 48, the chain 49, etc., and when the spur gear 47 is rotated by the motor 50,
The spur gear 47 moves in the axial direction, and the helical gear 27 also moves in the axial direction via the connecting member 45 and the guide rod 43. Also, the mount 42
A gear 52 is attached to the other end of the screw shaft 41 protruding from the
This gear 52 is connected to a motor 55 via a gear 53, a chain 54, etc. When the motor 52 rotates the gear 52,
The screw shaft 41 screw-fitted to the frame 42 also rotates and moves in the axial direction, and the helical gear 35 also moves in the axial direction. Therefore, the helical gear 26 of the blanket cylinder 18
By rotating 7, 35, the plate cylinder body 3 and the shell cylinder 5 can be adjusted in the circumferential direction (vertical direction).

Reference numeral 61 designates a bearing 63 in a shaft hole 62 formed in the journal 8.
A male screw portion 61a is formed on the screw shaft 61. The male screw portion 61a is screwed to the female screw portion 64a formed on the frame 64 fixed to the frame 10. A gear 65 is attached to the other end of the screw shaft 61 protruding from the gantry 64, and the gear 65 is connected to a motor 68 via a gear 66, a chain 67, etc., and when the motor 68 rotates the gear 65, Stand 64
The screw shaft 61, which is screw-fitted with, rotates and moves in the axial direction, and the plate cylinder body 3 also moves in the axial direction, and adjustment in the axial direction (left-right direction) becomes possible. On the other hand, a male screw 37a that is screwed with the female screw 71a of the bracket 71 attached to the frame 42 is formed on the other end screw portion protruding from the screw shaft 41 fitted and inserted in the screw shaft 37. A gear 73 is attached to the other end of the screw shaft 37. The gear 73 is connected to a motor 76 via a gear 74, a chain 75, etc. When the gear 76 is rotated by the motor 76, the bracket 73 is screw-fitted to the bracket 71. The screw shaft 37 rotates and moves in the axial direction, and the adjustment shaft 31 also moves in the axial direction. Therefore, the shell cylinder 5 can also be moved in the axial direction and adjusted in the axial direction.

As described above, the helical gear is driven by the motor 50.
By moving 27 in the axial direction, the plate cylinder body 3 is adjusted in the circumferential direction, and by moving the helical gear 35 in the axial direction by the motor 55, the shell cylinder 5 is adjusted in the circumferential direction. The motor 68 moves the screw shaft 61 in the axial direction to adjust the plate cylinder main body 3 in the axial direction, and the motor 76 moves the screw shaft 37 and the adjusting shaft 31 in the axial direction to rotate the shaft of the shell cylinder 5. Orientation is adjusted so that each can be registered separately, and each registration does not affect the results of other registrations.

[0012]

As described above, according to the present invention, it is not necessary to provide the adjusting shaft in the axial direction of the plate cylinder main body unlike the conventional one, so that the manufacturing cost can be reduced. Also,
Since the processing time of the plate cylinder body is shortened, it leads to a shorter delivery time. Further, since it is not necessary to provide a hole for penetrating the adjustment shaft, the strength of the plate cylinder main body can be increased, and the operation side space can be widened.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention.

[Explanation of symbols]

 1 plate cylinder 3 plate cylinder body 5 shell cylinder 7,8 journal 9,10 frame 18 blanket cylinder 26,27,35 helical gear 30 coupling member 31 adjusting shaft 37,41 screw shaft

Claims (1)

(57) [Claims] 1. A divided plate cylinder is arranged between a drive side frame and an operation side frame of a printing unit of a rotary printing press, and the divided plate cylinder is provided with a plate cylinder body on which an operation side plate is mounted and a drive side frame. A shell cylinder to which a plate is mounted, and this shell cylinder is rotatably and axially movably fitted into a small diameter portion formed in substantially half of the plate cylinder body, and is mounted on the plate cylinder body and the shell cylinder. In the plate cylinder device capable of separately adjusting the formed plates, both journals of the plate cylinder main body are rotatably and axially movably supported by the drive-side frame and the operation-side frame, and one journal is driven from the drive-side frame. Adjust the circumference of the plate cylinder main body by adjusting the circumference of the plate cylinder main body by moving the helical gear in the axial direction so that the helical gear is attached to the protruding end so that it can move only in the axial direction. Means The adjustment shaft is provided in the inner hole of one of the journals so as to be rotatable and movable in the axial direction.One end of the adjustment shaft is connected to the shell cylinder through a coupling member, and the helical gear is attached to the other end. Installed so that it can be moved only in the direction, the helical gear is moved in the axial direction to adjust the circumferential direction of the shell cylinder, and a shell cylinder circumferential direction adjusting means is provided. Direction adjustment means for adjusting the axial direction of the shell cylinder by adjusting the axial direction of the shell cylinder by adjusting the axial direction of the shell cylinder by adjusting the axial direction of the shell cylinder. A plate cylinder device in a rotary printing press, which is provided with means for adjusting the axial direction of the plate cylinder body.