JP2000120985A - Lubricant feeding structure of cam mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lubricant feeding structure of a cam mechanism to continue a reliable feed of a lubricant for a long period. SOLUTION: A storage chamber 2a to store grease is formed on one end face side of a cam 2 and a grease pump 4 to feed grease is coupled to the storage chamber 2a through a connection pipe 5. A lubricant feed hole 2b which is communicated with a position on the outer peripheral surface of the cam 2 and through which grease in the storage chamber 2a is caused to flow out on the outer peripheral surface of the cam 2 is formed in a position closer to the lower part of the storage chamber 2a and an air intake hole 2c which is communicated with a position on the outer peripheral surface of the cam 2 and through which air is inputted from the external part to the interior of the storage chamber 2a is formed in a position closer to the upper part of the storage chamber 2a. This constitution causes grease gradually flows out through a lubricant feed hole 2b on the outer peripheral surface of the cam 2 under its gravity by feeding grease in the storage chamber 2a of the cam 2 to the interior of the storage chamber 2a through the working of the grease pump 4 and feeds it to the wholes of the outer peripheral surface of the cam 2 and a cam follower 3 by rolling the cam follower 3 over the outer peripheral surface of the cam 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a lubricant supply structure for a cam mechanism.

[0002]

2. Description of the Related Art In a folding machine attached to a printing machine (see, for example, Japanese Utility Model Publication No. 7-43097), operating tools such as grippers, knives, and needles for delivering, cutting, and bending printed webs. Is provided with a cam mechanism for periodically operating these operating tools. As shown in FIGS. 4 and 5, the cam mechanism has a cam 1 having a predetermined shape on one end surface side of a cylinder 11.
2 is supported so as to be able to move to a position for periodically operating the operating tool, and a cylinder 11 is provided so that a cam follower 13 in the form of a roller can roll along the outer peripheral surface (cam surface) of the cam 12. Of the cylinder 11 is rotatably supported while being urged radially inward of the cylinder 11.

In such a cam mechanism, when the cylinder 11 rotates, the rotation of the cylinder 11 causes
The cam follower 13 revolves and rolls on the outer peripheral surface of the cam 12, and moves in the radial direction of the cylinder 11 according to the shape of the cam 12, thereby interlocking with the radial movement of the cam 12. The tool can be activated periodically.

In rolling the cam follower 13 on the outer peripheral surface of the cam 12 in this way, in order to prevent the outer peripheral surfaces of the cam 12 and the cam follower 13 from being worn or damaged,
The cam mechanism can supply a lubricant between the cam 12 and the cam follower 13. Specifically, as shown in FIGS. 4 and 5, the nozzle 15 having the brush 16 provided at the tip is fixedly supported so that the brush 16 comes into contact with the outer peripheral surface of the cam follower 13, and is a lubricant. Grease pump 1 for feeding grease
4 is connected to the base end of the nozzle 15.

Therefore, when the grease pump 14 is operated to supply grease to the nozzle 15, the grease is fed to the brush 16, and the cam follower 13 comes into contact with the brush 16 at the time of revolving, so that the brush 16 Grease is applied to the outer peripheral surface of the cam follower 13 and the cam 1
Grease can be supplied between the outer peripheral surfaces of the cam follower 2 and the cam follower 13.

[0006]

However, the lubricant supply structure of the cam mechanism as described above has the following problems. Since the brush 16 is easily deformed or worn, it has been difficult to reliably supply grease for a long time. Since the grease easily adheres to and remains on the brush 16, the grease solidifies and falls off with the brush 16 and scatters around, so that the surrounding may be soiled.

[0007]

According to the present invention, there is provided a lubricant supply structure for a cam mechanism, comprising: an outer peripheral surface of a cam follower rolling on a cam surface of a cam; and the cam surface of the cam. And a lubricant supply hole for supplying the lubricant on the cam surface of the cam on the cam surface of the cam. It is characterized by.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which a lubricant supply structure for a cam mechanism according to the present invention is applied to a cylinder (barrel) of a folding machine attached to a printing press will be described with reference to FIGS.
1 is a schematic structural view of a main part thereof, FIG. 2 is an extracted enlarged view of an arrow II portion in FIG. 1, and FIG.

As shown in FIGS. 1 to 3, a predetermined shape is formed on one end surface side of a cylinder 1 provided with an operating tool such as a claw, a knife or a needle for transferring, cutting, or bending a printed web. The cam 2 to be formed is supported so as to be able to move to a position for periodically operating the operating tool. The one end surface of the cylinder 1 rotates while being urged radially inward of the cylinder 1 so that the cam follower 3 in the form of a roller can roll along the outer peripheral surface (cam surface) of the cam 2. Supported as possible.

That is, when the cylinder 1 rotates, the cam follower 3 revolves and rolls on the outer peripheral surface of the cam 2 with the rotation of the cylinder 1, and the radial direction of the cylinder 1 depends on the shape of the cam 2. , The actuating tool can be periodically operated in conjunction with the radial movement of the cam 2.

As shown in FIGS. 1 to 3, one end surface of the cam 2 has a storage chamber 2 for storing grease as a lubricant.
a is formed. A grease pump 4 for supplying grease is connected to the storage chamber 2a of the cam 2 via a connection pipe 5. By operating the grease pump 4, grease is supplied through the connection pipe 5 to the storage chamber 2a. 2a.

A lubrication supply hole 2 is provided below the storage chamber 2a of the cam 2 so as to communicate with the outer peripheral surface of the cam 2 so that the grease in the storage chamber 2a flows out to the outer peripheral surface.
b is formed. An air intake hole 2c is formed near the upper side of the storage chamber 2a of the cam 2 and communicates with the outer peripheral surface of the cam 2 to take in air from the outside into the storage chamber 2a.

In such a lubricant supply structure, when the grease pump 4 is operated to send grease into the storage chamber 2a of the cam 2 and store it, the grease is
Due to gravity, the lubricant gradually flows out of the lubricant supply hole 2b onto the outer peripheral surface of the cam 2 (at this time, air flows into the storage chamber 2a from the air intake hole 2c). Is supplied over the entire outer peripheral surface of the cam 2 and the cam follower 3 as the cam follower 3 rolls.

Therefore, according to the lubricant supply structure of the cam mechanism, the grease can be gradually discharged from the lubricant supply hole 2b to the outer peripheral surface of the cam 2, so that
Grease can be reliably supplied for a long period of time, and solidification of grease can be eliminated.
It is possible to prevent the grease from being scattered and to prevent contamination to the surroundings.

Further, since the grease stored in the storage chamber 2a of the cam 2 can be gradually discharged, the grease can be continuously supplied without operating the grease pump 4, thereby simplifying maintenance and inspection. Can be achieved.

[0016]

According to the lubricant supply structure of the cam mechanism according to the present invention, the grease can be gradually discharged from the lubricant supply hole onto the outer peripheral surface of the cam, so that the grease can be reliably supplied for a long time. The grease can be prevented from solidifying and falling off, and the grease can be prevented from being scattered, thereby preventing contamination of the surroundings.

[Brief description of the drawings]

FIG. 1 is a schematic structural view of a main part of an embodiment when a lubricant supply structure of a cam mechanism according to the present invention is applied to a cylinder (body) of a folding machine attached to a printing press.

FIG. 2 is an enlarged view of an arrow II in FIG. 1;

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a schematic structural view of an example of a lubricant supply structure of a conventional cam mechanism applied to a cylinder (body) of a folding machine attached to a printing press.

FIG. 5 is a partially extracted enlarged view as viewed from the direction of arrow V in FIG. 4;

[Explanation of symbols]

 Reference Signs List 1 cylinder 2 cam 2a storage room 2b lubricant supply hole 2c air intake hole 3 cam follower 4 grease pump 5 connection pipe

Claims (1)

[Claims] 1. A lubricant supply structure of a cam mechanism for supplying lubricant between an outer peripheral surface of a cam follower rolling on a cam surface of a cam and the cam surface of the cam, wherein the cam of the cam is provided with a lubricant. A lubricant supply structure for a cam mechanism, wherein a lubricant supply hole for supplying the lubricant on a surface is formed on the cam surface of the cam.