JP2936064B2 - Plate cylinder device in rotary printing press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a plate cylinder device in a rotary printing press.

[0002]

2. Description of the Related Art A known type of plate cylinder device is disclosed in Japanese Patent Application Laid-Open No. Hei 6-270386 proposed by the present applicant. This plate cylinder device receives both the rotation of the plate cylinder body of the plate cylinder and the rotation of the shell cylinder from the drive side, and the drive side includes shell cylinder circumferential direction adjusting means, shell cylinder axial direction adjusting means and plate cylinder body circumferential means. A total of three adjustment means of direction adjustment means are incorporated, and one plate cylinder body axial direction adjustment means is incorporated on the operation side. A long hole (inner hole) for adjusting the axial direction of the shell cylinder is provided on the drive side of the plate cylinder main body, and an adjustment shaft is incorporated therein.

[0003]

The conventional plate cylinder device is as described above, and has three adjusting means on the driving side.
There is a problem that the structure of the driving side becomes extremely complicated. Further, there is a problem that the cost is increased due to the drilling of the shell cylinder adjusting shaft and the securing of the drilling accuracy.

Accordingly, the present invention provides a plate cylinder device for a rotary printing press as described above, in which the plate cylinder body and the shell cylinder can both be rotationally driven from the drive side, and three adjusting means are provided on the drive side. It is an object of the present invention to provide a plate cylinder device which can eliminate the necessity, can simplify the adjustment structure on the drive side, does not need a hole or an adjustment shaft for adjusting the axial direction of the shell cylinder, and can reduce the manufacturing cost.

[0005]

In order to achieve the above object, according to the present invention, 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. The cylinder is constituted by a plate cylinder main body on which the drive-side plate is mounted, and a shell cylinder on which the operation-side plate is mounted, and the shell cylinder is rotatable about a small-diameter portion formed substantially in a half portion of the plate cylinder main body. In a plate cylinder device that can be inserted in a direction movable and the plate mounted on the plate cylinder main body and the shell cylinder can be adjusted separately, one journal of the plate cylinder main body can be rotated and moved axially on the drive side frame. Helical gear is mounted on the end of one of the journals so as to be movable only in the axial direction, and the helical gear is moved in the axial direction to adjust the circumferential direction of the plate cylinder body. Providing direction adjustment means That. At the end of one of the journals, there is provided a plate cylinder main body axial direction adjusting means for moving one journal in the axial direction to adjust the plate cylinder main body in the axial direction.

On the other hand, the other journal of the plate cylinder main body is rotatably supported on the operation side frame via a bearing together with the small cylindrical portion of the shell cylinder inserted into the other journal. It is movably supported in the axial direction via a sleeve mounted in the fitting hole of the side frame, and the spline of the spline helical gear is engaged with the spline formed at the end of the other journal by being engaged therewith. The helical external teeth of the helical gear are meshed with the helical internal teeth of the sleeve coupled with the small cylindrical portion of the shell cylinder, and the spline helical gear is axially moved and rotated to adjust the circumferential direction of the shell cylinder. Shell cylinder circumferential direction adjusting means is provided. Further, the sleeve is provided with shell cylinder axial direction adjusting means for adjusting the axial direction of the shell cylinder by moving the sleeve in the axial direction.
Further, when the plate cylinder body is driven and rotated by the drive system, the rotational driving force is transmitted from the end of the other journal to the shell cylinder via the spline helical gear and the sleeve.

[0007]

[0008]

[0009]

[0010]

FIG. 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). Reference numeral 1 denotes a plate cylinder. The plate cylinder 1 has a half of one side having a diameter smaller than that of an opposite side portion 2 and an outer peripheral surface 2a for mounting a plate on the opposite side portion. A small cylindrical portion 6 which is rotatably and axially movably fitted to a portion (small diameter portion) 4 having a reduced diameter, has the same outer diameter as the opposite portion 2, and has an outer peripheral surface 5a on which a plate is mounted. Attached cylindrical shell cylinder 5. Then, the plate cylinder body 3 is driven A
, And the shell cylinder 5 is disposed on the operation side B.

Reference numerals 7 and 8 denote journals on the drive side A and the operation side B of the plate cylinder main body 3, and one of the journals 7 serving as the drive side A.
Is rotatably supported by the drive side frame 9 via a bearing 11. The journal 7 can be moved in the axial direction together with the bearing 11 via a sleeve 15 mounted in the fitting hole 13 of the frame 9. Reference numeral 18 denotes a blanket cylinder, and reference numerals 19 and 20 denote journals of the blanket cylinder 18, which are supported via bearings 21 and 22, similarly to the journal 7 of the plate cylinder main body 3. 2
Reference numerals 3 and 24 are sleeves. A helical gear 26 is fixed to an end of the journal 19 projecting from the frame 9.
On the other hand, a helical gear 27 meshing with the helical gear 26 is mounted on an end of the journal 7 protruding from the frame 9 so as to be movable in the axial direction by a spline 28.

A bracket 29 is fixed to the helical gear 27, and a nut gear 31 is rotatably connected to the bracket via a bearing 30. A female screw hole is formed on the inner diameter side of the nut gear 31, and a screw shaft 32 is screwed into the female screw hole. One end of the screw shaft 32 is connected to a shaft hole formed at the end of the journal 7 via a bearing 37, is supported by a nut bush 38 provided on a plate 34 fixed to the frame 9, and projects from the plate 34. A gear 39 is mounted on the other end. The teeth on the outer diameter side of the nut gear 31 mesh with a gear 33 rotatably supported by a plate 34. This gear
33 is connected to the motor 36 via a chain 35 and the like,
When the motor 36 drives and rotates through the chain 35 and the like, the nut gear 31 rotates and moves in the axial direction with respect to the screw shaft 32, and the movement of the nut gear 31 causes the bracket 29 and the helical gear via the bearing 30. 27 moves in the axial direction, so that the plate cylinder main body 3 can move in the circumferential direction (vertical direction).

The gear 39 on the screw shaft 32 is a gear 40, a chain 41
The screw shaft 32 rotates and moves in the axial direction when the motor 42 rotates via the chain 41 or the like by driving the motor 42. Therefore, the journal 7 of the plate cylinder main body 3 also moves in the axial direction, and the plate cylinder main body 3 can be adjusted in the axial direction.

On the other hand, the other journal 8 is rotatably supported on the operation side frame 10 via a bearing 12 together with the small cylindrical portion 6 of the shell cylinder 5. The journal 8 can move in the axial direction integrally with the small cylindrical portion 6 of the shell cylinder 5 through a sleeve 16 mounted in a fitting hole 14 of the frame 10 together with the bearing 12. The journal 8 protrudes from the frame 10 and has a spline at its protruding end having a spline that meshes with a spline 43 formed at the end.
The helical gear 44 is mounted so as to be movable only in the axial direction. The outer periphery of the spline helical gear 44 has helical external teeth. A sleeve 51 having helical internal teeth meshing with the spline helical gear 44 is mounted in combination with the small cylindrical portion 6 of the shell cylinder 5. A bracket 45 is fixed to the spline helical gear 44, and a nut gear 47 is rotatably connected to the bracket via a bearing 46. The spline helical gear 44 and the sleeve 51 constitute a connecting member for connecting the journal 8 and the small cylindrical portion 6 of the shell cylinder 5.

A female screw hole is formed on the inner diameter side of the nut gear 47, and a screw shaft 48 is screwed into the female screw hole. Screw shaft
48 has a head fixed to a bracket 49 fixed to the sleeve 16. The teeth on the outer diameter side of the nut gear 47 mesh with a gear 50 rotatably supported by the bracket 49. This gear 50
Is connected to the motor 52 via the chain 61 and the like, and when rotated via the chain 61 and the like by driving the motor 52,
The nut gear 47 rotates and moves in the axial direction with respect to the screw shaft 48, and the movement of the nut gear 47 causes the bracket 45 and the spline helical gear 44 to move in the axial direction via the bearing 46, and this spline helical When the meshing position of the internal helical teeth of the sleeve 51 that meshes with the external helical teeth of the gear 44 moves, the sleeve 51 moves in the circumferential direction (rotation).
In the circumferential direction of the shell cylinder 5 (vertical direction)
Can be moved.

A screw shaft 54 is attached to the bracket 49 via a bearing 53.
Are connected at one end. This screw shaft 54 is
Is supported by a nut bush 55 provided on a fixed plate 56, and a gear 57 is mounted on the other end protruding from the plate 56. The gear 57 meshes with a gear 58 rotatably supported by the plate 56. The gear 58 is connected to a motor 60 via a chain 59 or the like.
When driven through the chain 59 etc.
Is rotated, the screw shaft 54 moves in the axial direction with respect to the nut bush 55, and the movement of the screw shaft 54 moves the bracket 49 and the sleeve 16 incorporated therein via the bearing 53 in the axial direction. The axial movement of the shell cylinder 5 becomes possible.

As described above, the helical gear is driven by the motor 36.
27 is adjusted in the circumferential direction by moving the plate cylinder body 3 in the axial direction, and the screw shaft 32 is moved in the axial direction by the motor 42 to adjust the plate cylinder body 3 in the axial direction. By moving the spline helical gear 44 in the axial direction by the motor 52, the sleeve 51 is caused to move in the circumferential direction to adjust the shell cylinder 5 in the circumferential direction. By moving the sleeve 16 in the axial direction, the axial adjustment of the shell cylinder 5 is performed. By controlling these four motors, the plate mounting outer peripheral surface 2a and the plate mounting outer peripheral surface 5a are moved in the circumferential direction, respectively. , Axial adjustments can be made.

In the above-described embodiment, the plate cylinder body 3 and the shell cylinder 5 are both rotationally driven from the drive side. That is, when the plate cylinder body 3 is driven and rotated by a drive system (not shown) on the drive side, the rotational driving force is transmitted from the protruding end of the journal 8 through the spline helical gear 44 and the sleeve 51 which are the connecting members to the shell cylinder. 5 is transmitted.

[0019]

It should be noted that the various members described in the above-described embodiment are merely preferred examples, and are not limited to those described in the embodiment.

[0021]

The present invention is as described above, and it is not necessary to provide two adjusting means on each of the driving side and the operating side, and it is not necessary to provide three adjusting means on the driving side as in the prior art. Can be simplified. In addition, a hole and an adjusting shaft for adjusting the axial direction of the shell cylinder as in the conventional case are not required, and both the rotational drive of the plate cylinder body and the shell cylinder can be received from the driving side as in the conventional case. The rotation drive transmission mechanism of (1) is also used as the rotation direction adjusting means of the shell cylinder on the operation side, so that the rotation driving force of the plate cylinder body and the shell cylinder is received by one helical gear provided on the drive side, thereby simplifying the structure. It has excellent effects such as reduction in manufacturing cost.

[Brief description of the drawings]

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

[Explanation of symbols]

 1 plate cylinder 3 plate cylinder body 5 shell cylinder 6 small cylinder 7,8 journal 9,10 frame 18 blanket cylinder 26,27 helical gear 31,47 nut gear 32,48,54 screw shaft 36,42,52,60 motor 44 Spline and helical gear 51 Sleeve

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B41F 13/12 B41F 13/20 B41F 33/14

Claims (1)

(57) [Claims] 1. A printing plate of a rotary printing press, wherein a divided plate cylinder is arranged between a driving-side frame and an operation-side frame of a printing unit. A shell cylinder for mounting the plate, and this shell cylinder is rotatably and axially movably inserted into a small diameter portion formed in substantially a half portion of the plate cylinder main body, and mounted on the plate cylinder main body and the shell cylinder. In the plate cylinder device capable of separately adjusting the formed plates, the drive-side frame (9) supports one journal (7) of the plate cylinder body (3) so as to be rotatable and axially movable. A helical gear (27) is mounted on the end of the journal so as to be movable only in the axial direction, and the helical gear is moved in the axial direction to adjust the circumferential direction of the plate cylinder body (3). A direction adjusting means, and an end of the one journal; A means for axially adjusting the plate cylinder main body (3) by moving one journal in the axial direction to adjust the axial direction of the plate cylinder main body (3), and the other of the plate cylinder main body (3) is provided on the operation side frame (10). The journal (8) of the shell together with the small cylindrical portion (6) of the shell cylinder (5) inserted into the other journal is mounted on the operation side frame by the bearing (1).
2), while being rotatably supported via the other journal, while being rotatably supported in the axial direction via a sleeve (16) attached to the fitting hole (14) of the operation side frame together with the bearing. The spline of the spline-helical gear (44) is fitted and fitted to the spline (43) formed at the end, and the small cylindrical portion (6) of the shell cylinder (5) is fitted to the external helical teeth of the spline-helical gear (44). A shell cylinder circle which meshes and attaches the internal helical teeth of the sleeve (51) coupled with the shell cylinder and adjusts the circumferential direction of the shell cylinder (5) by moving and rotating the spline helical gear (44) in the axial direction. A circumferential direction adjusting means, and a sleeve cylinder axial adjusting means for adjusting the axial direction of the shell cylinder (5) by moving the sleeve in the axial direction to the sleeve (16); ) When rotated, the rotational driving force is transmitted from the end of the other journal (8) to the shell cylinder (5) through the spline helical gear (44) and the sleeve (51). Plate cylinder device in a rotary printing press.