JP3012353B2 - Rubber roller manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[Object of the Invention]

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a rubber roller, particularly a fixing roller coated with a liquid silicone rubber.

[0003]

2. Description of the Related Art When coating liquid silicone rubber directly on a roller core shaft or via a rubber layer or a plastic layer, the outer peripheral surface of the journal is preliminarily protected so that the liquid silicone rubber does not adhere to the journals at both ends of the core shaft. A covering cylindrical masking is attached and sent to the rubber coating process. The mask is removed after a certain period of time after coating the liquid silicone rubber.

[0004]

In the conventional method of manufacturing a rubber roller, the steps of feeding the roller with the masking attached to the rubber coating step, the step of removing the roller, and the step of removing the masking, etc., often depend on human labor.

[0005] For this reason, the work efficiency is poor. In particular, since the masking is simply formed in a cylindrical shape, not only the work of removing the masking from the journal is troublesome, but also it is difficult to remove the masking closely with the roller by human power. In this case, there was a problem that the rubber at the end of the roller protruded because the masking was forcibly pulled out, and the appearance was poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and a method of manufacturing a rubber roller in which the movement of the roller is automated, the handling of masking is simplified, and the rubber roller can be manufactured efficiently. The purpose is to provide.

[0007]

According to the present invention, a method of manufacturing a rubber roller for coating a liquid rubber on the outer periphery of a roller in a state where a cylindrical masking is put on a journal of a roller core shaft includes the following steps. It is assumed that.

A step of supporting a mask having a concave portion on the outer peripheral surface and detachably mounted on the journal by a work lift to raise the roller to a predetermined position.

A step of center-clamping both end faces of the journal supported by the work lift with a clamp rod, and then lowering only the work lift.

A step of coating the outer periphery of the roller body which is center-clamped with the clamp rod with liquid rubber;

A step of operating the masking gripping arm in a state where the roller is center-clamped, gripping the concave portion on the outer peripheral surface of the masking, sliding the masking outward along the clamp rod, and detaching from the journal.

A step of raising the work lift to support the journal, moving the clamp rod away from both end faces of the journal, and moving the rollers by the work lift.

[0013]

In the present invention, the roller is raised to the rubber coating position by the work lift in the above,
In the above, the roller is center-clamped with a clamp rod, and the outer periphery of the roller is coated with liquid rubber in the above. Thereafter, the masking grip arm is operated in the above to release the masking from the journal,
In the above, the rubber roller can be automatically and efficiently manufactured by repeatedly moving the roller by the work lift while separating the clamp rod from the journal.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for manufacturing a rubber roller according to the present invention will be described with reference to the illustrated embodiments.

FIG. 1 to FIG. 3 are a series of operation diagrams showing a manufacturing method of the present invention.

FIG. 1 shows a liquid silicone rubber (not shown).
Roller 1 having rubber layer 1a as a pre-stage for applying
Is supported by a work lift 4 via a masking 3 detachably attached to journals 2a at both ends of the core shaft 2 and is lifted. Then, both ends of the journal 2a are center-clamped by the horizontally moving clamp rod 5 with the roller 1 raised to a predetermined position. afterwards,
Only the work lift 4 is lowered.

Although not shown, a liquid rubber is coated on the outer periphery of the roller body, which is center-clamped by the clamp rod 5, by a known appropriate means.

The masking 3 is mounted so that the liquid silicone rubber does not adhere to the journal 2a, has a cylindrical shape, and is provided with a circumferential groove 3a on the outer peripheral surface. An O-ring 6 is mounted on the inner peripheral surface of the masking 3. O
The ring 6 has a role of preventing the journal 2a from slipping.

Next, with the roller 1 center-clamped as shown in FIG. 2, the masking gripping arm 7 is actuated to grip the masking outer peripheral surface as shown in FIG. Slide it outward along with the journal 2a. Reference numeral 7 denotes a hook-shaped tip that is fitted into the circumferential groove 3a on the outer peripheral surface of the masking to pull out the masking 3 from the journal 2a.

Then, the work lift 4 is raised to support the journal 2a, the clamp bar 5 is separated from both end faces of the journal, and the roller is moved to a predetermined position by the work lift.

By repeating the above operation, the rubber roller of the present invention is manufactured sequentially.

[0022]

As described above, according to the present invention, the movement of the roller can be automated and the masking can be easily removed from the journals at both ends of the core shaft by appropriately operating the work lift, the clamp, the masking gripping arm and the like. be able to. Therefore, a rubber roller having excellent quality can be manufactured efficiently.

[Brief description of the drawings]

FIG. 1 is an operation diagram of an embodiment of the method of the present invention.

FIG. 2 is another operation diagram of the embodiment.

FIG. 3 is still another operation diagram of the embodiment.

[Explanation of symbols]

 1 Roller 2 Core shaft 2a Journal 3 Masking 4 Work lift 5 Clamp rod 7 Masking gripping arm

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B29D 31/00 G03G 15/20

Claims (1)

(57) [Claims] 1. A method of manufacturing a rubber roller, comprising coating a liquid rubber on the outer periphery of a roller in a state where a cylindrical mask is put on a journal of a roller core shaft, comprising the following steps. A step of supporting a mask having a concave portion on the outer peripheral surface and detachably mounted on the journal with a work lift to raise the roller to a predetermined position. A step of center-clamping both ends of a journal supported by a work lift with a clamp rod, and then lowering only the work lift. A step of coating liquid rubber on the outer periphery of the roller which is center-clamped by the clamp rod; A step of operating the masking gripping arm in a state where the roller is center-clamped, gripping the concave portion on the outer peripheral surface of the masking, sliding the masking outward along the clamp rod, and detaching from the journal. Raise the work lift to support the journal,
A step of moving the roller by a work lift while separating the clamp rod from both end faces of the journal.