JPS6330858B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a trip device for a metal rotary printing press that uses a metal plate as a printing material.

An object of the present invention is to enable accurate and easy fine adjustment of the distance between the axes of the rolls, that is, the gap, in a roll configuration consisting of an impression cylinder and a rubber cylinder, and to make it possible to accurately and easily finely adjust the distance between the axes of the rolls, that is, the gap corresponding to the thickness of the metal plate. It is an object of the present invention to provide a trip device that ensures high precision by automatically controlling the trip device to a free state and, when returning to the original position, correctly reproducing the set fine adjustment gap.

In the conventional device for adjusting the gap between rolls, the impression cylinder is directly displaced by a turnbuckle. In this case, the following problems occurred.

In other words, it is extremely difficult to ensure the precision of fine adjustment of the gap due to back crushing of the turnbuckle screws, and it is necessary to adjust the two bearings on the left and right sides of the roll, which increases the setup work time and labor required for fine adjustment. was large, and there was a considerable amount of lost time before starting work when changing the thickness of the metal plate used for printing. In addition, when the metal plate does not pass between the rolls, the distance between the axes of the impression cylinder and blanket cylinder is widened to prevent printing ink from transferring to the blanket cylinder, and a large gap is created to create a free state. Fine adjustment of position When returning to the gap, it is necessary to accurately reproduce the set gap.

In order to solve the conventional problems as mentioned above,
The applicant for this patent is Japanese Patent Application No. 54-110273
34457), the present invention further simplifies the structure and reduces the number of component parts.
It is characterized by easy and reliable adjustment operations and improved scale alignment accuracy.

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is an impression cylinder, and 2 is a rubber cylinder that is in line contact with the impression cylinder 1. As shown in FIG. 3, the impression cylinder 1 has a support shaft 28 at the axis of both ends,
It is supported by a. Furthermore, the bearing 28a is supported within a bearing housing 27 whose outer diameter is eccentric with respect to the axis, and the bearing housing 27 is fitted into the frame 3 so as to be eccentrically rotatable. Therefore, when the bearing housing 27 is rotated, the axial center position of the impression cylinder 1 is displaced by eccentric rotation according to the amount of rotation, and the gap N between the impression cylinder 1 and the blanket cylinder 2 is adjusted, and the distance between the axial centers is increased. Can be pulled apart. Therefore, the bearing housing 27 is rotated to finely adjust the gap N to correspond to the thickness of the metal plate.
The device that allows the two to be separated by a large distance is constructed by the following mechanism.

That is, as shown in FIGS. 1 and 2, a support shaft 6 is rotatably supported on the frame 3 along an axis parallel to the impression cylinder 1, and an outer shaft eccentric to the axis of the support shaft 6 is mounted on both ends of the support shaft 6. An eccentric boss 7 having a diameter is attached via a key 9, and one end of the support shaft 6 is connected to a worm reducer 5 fixed to the frame 3 by a bracket 4. 22 is an adjustment handle for operating the worm reducer 5.

A relay connecting member 11 is rotatably fitted on the outer diameter of both eccentric bosses, and the relay connecting member 11 and the bearing housing 27 of the impression cylinder 1 are connected by a turnbuckle 12. 13 and 14 are connecting pins thereof.

Further, an operating shaft 18 is rotatably supported on the frame 3 below the support shaft 6 along a parallel axis. A first arm 19 is fixed to this operating shaft 18 in a direction perpendicular to the axis.
A piston rod 17 of a cylinder 15 is connected to the cylinder 9 so as to be pivotable by a pivot 16.

Further, second arms 20 are provided at both ends of the operating shaft 18.
This second arm 20 and the relay connection member 11 are connected by a link 21.

A flange 8 concentric with the support shaft 6 is integrally formed on the eccentric boss 7 on the side of the worm reducer 5,
A scale 10 is engraved on its outer peripheral surface. Furthermore, a presser 26 is screwed onto the threaded portion 24 at the tip of the lock handle 23 and is attached to a receiving member 25 that moves forward and backward with forward and reverse rotation of the lock handle 23. The locking action is performed by pressing the button.

Next, the operation of the present invention will be explained. First, the flange 8 is unlocked by inserting the lock handle 23. Fine adjustment of the gap N between the impression cylinder 1 and the blanket cylinder 2 to correspond to the thickness of the metal plate to be printed is made by operating the adjustment handle 22 and rotating the support shaft 6 via the worm reducer 5. . As a result, the eccentric boss 7 rotates integrally with the support shaft 6, and the turnbuckle 1 rotates in accordance with the amount of eccentric rotation.
The rotational action is transmitted to the bearing housing 27 via the bearing housing 27. Due to this rotation of the bearing housing 27, the axial center of the impression cylinder 1 is displaced with respect to the blanket cylinder 2 due to the amount of eccentricity of the outer diameter of the bearing housing 27, and the gap N can be finely adjusted to increase or decrease.

In addition, when increasing the distance between the axes of the impression cylinder 1 and the blanket cylinder 2, the cylinder 15 is operated and the first arm 19, second arm 20, link 21
and by actuating the turnbuckle 12 with a large stroke via the relay connection member 11. Incidentally, when the cylinder 15 returns to the original position, the initially set gap N is restored. The purpose of this large distance between the axes is to prevent ink from transferring to the blanket cylinder 2 when the metal plate is not passed between the rolls, and to prevent ink from adhering to the back side of the metal plate that is subsequently passed between the rolls. The goal is to prevent it.

The present invention has the following advantages. That is, the structure is extremely simplified and the number of parts is reduced, resulting in cost reduction and the elimination of causes of failure. Furthermore, the precision of the fine adjustment is improved by adjusting the scale, and since both the left and right ends of the impression cylinder are set to the same amount at the same time by operating the adjustment handle on one side, particularly high-precision adjustment settings can be obtained.
It is possible to reproduce the set gap without disturbing the set gap even if the gap is separated by a large distance.

[Brief explanation of the drawing]

FIG. 1 is a side view of the apparatus of the present invention, FIG. 2 is a sectional view of the main part thereof, and FIG. 3 is a sectional view of the impression cylinder bearing section. 1...impression cylinder, 2...rubber cylinder, 3...frame,
5... Worm reducer, 6... Support shaft, 7... Eccentric boss, 8... Flange, 9... Key, 10...
Scale, 11... Relay connection member, 12... Turnbuckle, 15... Cylinder, 17... Piston rod, 18... Operating shaft, 19... First arm,
20...Second arm, 21...Link, 22...
...Adjustment handle, 23...Lock handle, 26
... Presser, 27 ... Bearing housing, 28 ...
Support axis.

Claims (1)

[Claims] 1. In a metal rotary printing press having an impression cylinder and a blanket cylinder in line contact, the bearing part of the impression cylinder is supported by a bearing housing that can rotate eccentrically, so that the distance between the axes with respect to the blanket cylinder can be adjusted; The support shaft is rotatably supported on an axis parallel to the impression cylinder, and an eccentric boss having an outer diameter eccentric with respect to the axis of the support shaft is attached to both ends with a key,
One end of the support shaft is connected to a worm reducer operated by an adjustment handle, and a relay connecting member is rotatably fitted to the outer diameter of both eccentric bosses, and the intermediate connecting member and the impression cylinder are connected to each other. A first arm is connected to the bearing housing by a turnbuckle, and an operating shaft is rotatably supported on the frame along an axis parallel to the lower part of the support shaft, and a first arm is fixed to the operating shaft in a direction orthogonal to the axis. Connect with cylinder device,
Further, the second arm fixed to both ends of the operating shaft and the relay connecting member are connected by a link, and the eccentric boss on the worm reducer side is integrally formed with a flange concentric with the support shaft. A trip device for a metal rotary printing press, characterized in that a scale is engraved on the outer peripheral surface of the flange, and a pressing lock piece that is moved forward and backward by a lock handle is in contact with the flange surface.