JPH0436918Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an oil supply device for supplying lubricating oil to the shaft support of a cylinder removable eccentric bearing which pivotally supports a printing cylinder in a rotary printing press.

[Conventional technology]

In various types of rotary printing presses, a so-called attachment/detachment operation is performed in which an impression cylinder or the like is brought into contact with and separated from a mating cylinder during printing and non-printing. This is done by rotating an eccentric bearing. On the other hand, each cylinder bearing is equipped with an oil supply device for lubrication.
In the case of the above eccentric bearing, since the bearing rotates,
Conventionally, this has been dealt with by connecting a flexible oil supply pipe to the eccentric bearing.

[Problem that the invention attempts to solve]

However, in such conventional oil supply devices for eccentric bearings, the cylinder is repeatedly attached and detached, so the oil supply pipe is easily damaged due to fatigue due to repeated bending operations or contact with surrounding gears, etc. If this happens, remove the gear, etc.
There was a problem in that it took a long time to restore the system.

[Means for solving problems]

In order to solve these problems, in the present invention, the oil sump member is supported by a support member located outside the outer peripheral surface of the eccentric bearing and fixed to the side of the frame so that it can move forward and backward in the radial direction of the eccentric bearing. The inner circular arc surface is pressed against the outer circumferential surface of the eccentric bearing by a spring member, and an oil reservoir is provided in this oil reservoir member to communicate with the inner circumferential lubricated part of the eccentric bearing, and an oil supply source is connected to this oil reservoir member. .

[Effect]

Oil from the oil supply source is supplied to the inner circumference of the eccentric bearing via the oil supply piping and oil reservoir. When the eccentric bearing is rotated to attach and detach the shell, the eccentric bearing rotates while sliding on the inner peripheral surface of the oil sump member, which is fixed in the circumferential direction, and the oil supply pipe does not move and oil can be supplied. I can continue.

〔Example〕

1 and 2 show an example in which the oil supply device according to the present invention is applied to an impression cylinder of a sheet-fed printing press, and FIG.
The figure is a sectional view taken along AA in FIG. In the figure, an eccentric bearing 2 is rotatably supported on the left and right frames 1, and the eccentric bearing 2 has an axis F of an outer circumference 2a that fits into a bearing hole 1a of the frame 1, and an inner The axis _F1 of the circumferential circle 2b is eccentrically indicated by the symbol t in the figure, and the inner circumferential circle 2b has a roller bearing 3.
The impression cylinder 4 is rotatably supported via the shaft. A blanket cylinder 5 is rotatably supported on a frame 1 diagonally above the impression cylinder 4. By rotating an eccentric bearing 2 via a lever 6 using an air cylinder or the like, the blanket cylinder 5 is moved by an eccentric action. It is configured so that it can be attached to and detached from it. 7 is a nut for fixing the roller bearing ring 3, and 8 is an impression cylinder gear which is drivingly connected to the driving side via a rubber cylinder gear and rotationally drives the impression cylinder 4.

The oil supply device, designated as a whole by reference numeral 9, is formed into a rectangular parallelepiped shape, is located outside the outer circumferential circle 2c of the flange of the eccentric bearing 2, and is fixed to the outer surface of the frame 1 with bolts 10 as a support member. It is equipped with a holder 11, and this holder 11 and an eccentric bearing 2
An adapter 12 serving as an oil reservoir member is provided between the flange outer circumferential surface 2c and the eccentric bearing 2 so as to be movable toward and away from the eccentric bearing 2, with its inner circular arc surface facing the flange outer circumferential surface 2c. The adapter 12 is inserted into the spring hole 11a provided in the holder 11 so that the arcuate surface of the adapter 12 is brought into pressure contact with the flange outer peripheral surface 2c.
A compression coil spring 13 is loaded to bias the . 14 is a bolt for fixing the holder 11 and the adapter 12 to the outer periphery 2a of the eccentric bearing 2;
11b is integrally formed with the holder 11 and is connected to the adapter 1.
This is a guide that guides the advance and retreat of 2. Note that the flange outer circumferential surface 2c is concentric with the outer circumferential circle 2a.

The adapter 12 includes an oil sump 1 that is isolated from the outside.
2a is provided, and this oil reservoir 12a is communicated with a roller bearing 3 serving as an oiled portion through an oil passage 2d provided in the eccentric bearing 2. The position of the oil passage 2d is set so that it opens into the oil reservoir 12a at each rotation end when the eccentric bearing 2 is attached or removed. A joint 15 is fixed to the holder 11 and connected to an oil supply source (not shown) through an oil supply pipe 16, and communicates with the oil reservoir 12a through a flexible pipe 17 and a port. , oil from an oil supply source is supplied to the roller bearing 3 through these paths.

The operation of the oil supply device configured as above will be explained. During the printing operation, the eccentric bearing 2 is in the position shown in the figure, with the impression cylinder 4 facing the blanket cylinder 5. When the printing operation is interrupted, the eccentric bearing 2 rotates and the axis F ₁
rotates around the axis F, so the impression cylinder 4 is separated from the blanket cylinder 5. When the eccentric bearing 2 rotates,
Although its outer peripheral surface 2c rotates eccentrically, the adapter 12
is constantly pressed against the outer circumferential surface 2c by the compression coil spring 13 without separating from the outer circumferential surface 2c.
The oil from the oil supply source passes through the oil supply pipe 16, the joint 15, and the pipe 17, and then flows from the port to the oil sump 12a.
The oil is fed into the roller bearing 3 through the oil passage 2d to lubricate it. When these cylinders are attached and detached, the eccentric bearing 2 rotates, but the adapter 12 moves only slightly and the holder 11 is fixed and does not move, so the oil supply pipe 16 etc. remain stationary. , these do not repeatedly bend or come into contact with the gear 8 or the like.

Although this example shows an example in which the present invention is applied to an impression cylinder of a sheet-fed printing press, the invention is not limited to the type of printing machine or cylinder, and the same applies to any cylinder as long as it has an eccentric bearing. can be implemented.

[Effect of idea]

As is clear from the above explanation, according to the present invention, in an oil supply device for a rotary printing press, an oil reservoir member is attached to a support member located outside the outer peripheral surface of the eccentric bearing and fixed to the outer surface of the frame. The oil sump member is supported so as to be movable forward and backward in the radial direction, and its inner circular arc surface is pressed against the outer periphery of the eccentric bearing by a spring member, and the oil sump member is provided with an oil sump that communicates with the inner periphery of the eccentric bearing to be oiled. By connecting a refueling source to this, not only can refueling be carried out smoothly, but also
Since the oil supply piping remains stationary regardless of the rotation of the eccentric bearing for attaching and removing the fuselage, the oil supply piping, etc. does not repeatedly bend or come into contact with other parts, so the oil supply piping, etc. does not get damaged and can last for a long time. In addition to improving productivity, downtime for damage recovery is eliminated, which improves productivity.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the oil supply device for a rotary printing press according to the present invention.
It is a sectional view along AA of the figure. DESCRIPTION OF SYMBOLS 1... Frame, 2... Eccentric bearing, 2a... Outer circumference circle, 2b... Inner circumference circle, 2c... Flange outer circumferential surface, 2d... Oil path, 3... Roller bearing, 4
... Impression cylinder, 5 ... Rubber cylinder, 8 ... Gear, 9 ... Oil supply device, 10 ... Bolt, 11 ... Holder, 11
a... Spring hole, 12... Adapter, 12a... Oil reservoir, 13... Compression coil spring, 15... Joint, 16... Oil supply piping, 17... Piping, F...
Axis center of outer circumference circle, F ₁ ...Axis center of inner circumference circle, t... Eccentricity dimension.

Claims (1)

[Scope of utility model registration request] In the rotary printing press described above, the rotary printing press is equipped with an eccentric bearing that rotates for attaching and detaching the cylinder by eccentrically making the axis of the outer circumferential circle that fits into the bearing hole of the frame and the axis of the inner circumferential circle that pivotally supports the cylinder end shaft. a support member located outside the outer peripheral surface of the eccentric bearing and fixed to the side surface of the frame; and an inner circular arc surface of the eccentric bearing is brought into pressure contact with the outer peripheral surface of the eccentric bearing by means of a spring member. An oil sump member supported so as to be freely advanced and retracted in a radial direction is provided, and an oil sump is formed in this oil sump member and communicates with the inner periphery of the eccentric bearing to be oiled, and an oil supply source is connected to this oil sump. A lubrication device for a rotary printing press characterized by the following.