JP3386591B2 - Deburring method of rubber roll - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a method for removing burrs from rubber rolls installed in office equipment such as facsimiles, printers and copiers.

[0002]

2. Description of the Related Art In the manufacturing process of the above rubber roll, a core metal is used as a shaft, and a cylindrical metal mold is arranged around the core metal leaving both ends of the core metal, and rubber is press-fitted and vulcanized. The rubber is slightly extruded from the joining portion between the mold and the core metal, and burrs are formed on the end face of the rubber portion of the rubber roll and the outer peripheral surface of the core metal at the end. In order to remove these burrs, conventionally, a cutter blade or a blade knife was used, and it was done manually by a person so as not to damage the core metal.

[0003]

However, in the above-mentioned conventional method, it is difficult to completely remove burrs from the rubber roll, and if a rubber roll with burrs is used in office equipment, the rubber roll may cause rotation failure or office equipment. However, there was a problem that the original function of the rubber roll could not be exerted because there was a problem that it could not be incorporated into. The present invention is
It is an object of the present invention to solve the above-mentioned conventional problems and to provide a method for completely and efficiently removing burrs adhering to a rubber roll.

[0004]

According to the present invention, while rotating a rubber roll, the wire is brought into contact with both end faces of a rubber portion of the rubber roll, so that the wire moves from the outer peripheral surface toward the core metal.
Or by moving from the core bar toward the outer peripheral surface,
And the wire in contact with the core metal,
Is a method for removing burrs from a rubber roll, which removes burrs by moving the burrs by moving the burrs by moving the wrapping tape along the core bar with the wrapping tape in contact with the core bar The gist is the method for removing burrs.

The present invention will be described below with reference to the accompanying drawings. FIG. 1 is an explanatory view showing a state in which burrs attached to the ends of the rubber portion of a rubber roll are removed with a wire.
FIG. 2 is an explanatory diagram showing an example of a state in which tension is applied to a wire for removing burrs of a rubber roll. Figure 3
It is explanatory drawing which shows an example of the operating state of a wrapping tape, and FIG. 4 is explanatory drawing of the state which applied tension to the wrapping tape.

A rubber part is integrally molded in a roll shape on a core metal,
Rubber roll 1 obtained by vulcanizing has been coated with a rubber part, leaving both ends of the core metal 2, as shown in FIG. 1, a rubber
To remove the burrs from both ends of the
While rotating the ruler 1 , the wire 3 is moved downward along the both end faces of the rubber portion from the outer peripheral face toward the core metal .
Alternatively , the burr 4 generated at both ends of the rubber portion is removed by moving the core metal 2 upward toward the outer peripheral surface.

[0007] burr if from the outer peripheral surface along the end surfaces of the rubber part to the metal core direction, occurs at both ends of the rubber part
After removing 4 and 4, the wires 3 and 3 are kept in contact with the cored bars 2 and 2 of the rubber roll 1 and moved to the outside of the rubber roll 1 , that is , the direction of the holding members 5 and 6. The burr adhering to the core metal 2 is removed. When going from the core metal 2 to the outer peripheral surface of the rubber part, at the end of the rubber part
Before removing the burrs 4 that occurred, inwardly along the metal core, to
That is, the rubber portion is moved in the direction of the end face to remove the burr 4 attached to the core metal 2, and then the wires 3 , 3 are pulled in the direction of the arrow to remove the burr attached to the end face. The rotation of the rubber roll 1 is usually performed by attaching both ends of the cored bar 2 of the rubber roll 1 to holding members 5 and 6 such as a chuck as shown in FIG. The rotation speed of the rubber roll 1 at this time is 1200 rpm to 2300 rpm, preferably 1600 rpm.

The wire 3 is pressed against the rubber roll 1 under tension with a pair of wire rolls 7 and 8 as shown in FIG. Wire 3 in this case
Is usually 5 mm / sec to 12 mm / sec, preferably 10 mm / sec. The tension applied to the wire 3 by the wire rolls 7 and 8 is 1.3k.
It is from gf to 1.6 kgf, preferably 1.6 kgf. Furthermore, the moving speed of the wire 3 outward while in contact with the core metal 2 is
It is 3 mm / sec to 6 mm / sec, preferably 5 mm / sec.

The wire 3 used has a diameter of 0.20 mm.
~ 0.30 mm, preferably 0.25 mm, made of a metal that has sufficient cutting force for rubber such as brass, but is soft to some extent to the core metal (usually made of stainless steel such as SUS) 2. Used. Further, the wire 3 preferably has a tensile strength of 40 kgf / mm ² or more, and if it is less than that, it is easily broken and the working efficiency is deteriorated.

The burr 4 attached to the core metal 2 is the wire 3 described above.
However, in the rubber roll 1 used for precision equipment, a slight amount of fine burrs is not allowed to remain, so the surface of the cored bar 2 is covered with the wrapping tape 10.
Will remove the burr more carefully. In this case, after the burrs 4 on both end surfaces of the rubber portion are removed by the wire 1 and then the burrs 9 remaining on the surface of the cored bar 2 are removed and finished, while rotating the rubber roll 1 as shown in FIG. The wrapping tapes 10 and 10 are run at a constant speed and pressed against the exposed metal cores 2 and 2 of the rubber roll 1, and in that state, they are moved to the outside of the rubber roll 1 to remove burrs 9 remaining on the metal core surface. Then, the wrapping tape 10 is pulled up.

The rotation of the rubber roll 1 in this case is usually
Both ends of the metal cores 2 and 2 of the rubber roll 1 are attached to the holding members 11 and 12 as shown in FIG . The rotation speed of the rubber roll 1 at this time is 1200 rpm to 2300 rpm, preferably 1600 rpm. The wrapping tape 10 is for finishing by removing the burrs 9 remaining on the surface of the core metal 2, for example, polyethylene terephthalate (PET),
A plastic sheet such as polycarbonate (PC) or a flat plate made of non-woven fabric made of these is adopted, and has a proper strength, a thickness of 0.2 to 0.3 mm and a width of 3.5 to
It is preferably 4.5 mm.

The pressing of the rubber roll against the core metal 2 by the wrapping tape 10 is performed by wrapping the wrapping tape 10 with the wrapping tape rolls 13 and 1 as shown in FIG.
Apply tension at 4. The running speed of the wrapping tape 10 in this case is 2.5 mm / sec to 3.5 mm / sec, preferably 3 mm / sec, and the wrapping tape 10 pressed against the core metal 2 is 3 mm / sec. from sec
The rubber roll 1 is moved to the outside at a moving speed of 10 mm / sec, preferably 5 mm / sec, and then pulled up.

The wrapping tape rolls 13 and 1
In 4, the tension applied to the wrapping tape 10 is 0.7 kgf.
To 1.0 kgf, preferably 0.8 kgf. By the above combination process, burrs attached to the rubber roll and the core metal thereof are completely removed, and a high quality rubber roll is obtained.

[0014]

In the rubber roll deburring method of the present invention,
Wire moves along both ends of a rotating rubber roll
By contacting the metal core was removed by cutting the burr adhering to the end surfaces of the rubber roll. In addition, the wire that contacts the core bar keeps the contact state and
Move along and remove the burr adhering to the core metal. Since the wire is applied with a relative speed and tension by a pair of wire rolls, the burr can be cut smoothly and the core metal is not damaged. Furthermore, the wrapping tape contacts the core metal along both end faces of the rotating rubber roll with appropriate tension applied , and moves along the core metal in this contact state to completely remove the burr remaining on the core metal. To remove. As described above, by combining the wire with appropriate tension and the wrapping tape, it becomes possible to mechanically completely remove the burr of the rubber roll, and the technical problem of the present invention is solved.

[0015]

[Example] A cylindrical split mold having an inner diameter of 18 mm and a length of 320 mm was applied to a stainless steel core having a diameter of 6 mm and a length of 330 mm, and silicone rubber (manufactured by Shin-Etsu Polymer Co., Ltd., compound name ZB2511R ) Injection molding, 180 ° C for 10 minutes,
A rubber roll was manufactured by heat vulcanization. As shown in FIG. 1, the rubber roll thus obtained is sandwiched between chucks 5 and 6, and the wire 3 traveling at 10 mm / sec is moved along both end faces of the rubber portion of the rubber roll 1 while rotating at a speed of 1600 rpm. Then, the core metal 2 was brought into contact with the core metal 2 to remove burrs 4 generated at both ends of the rubber roll. Further, while keeping the above-mentioned wire 3 in contact with the cored bar 2, it was moved to the outside of the cored bar 2 at a speed of 5 mm / sec to remove the burr 4 attached to the cored bar 2. The wire 3 used is made of brass and has a tensile strength of 50 kgf / mm ² and a diameter of 0.25 mm. The wire 3 has a pair of wire rolls when removing the burr 4.

Next, after removing the burrs by the wire, as shown in FIG. 3, the rubber roll 1 was held between chucks 11 and 12, and was rotated at a speed of 1600 rpm for 3 mm / sec.
The wrapping tape 10 which runs at a constant speed on the core metal 2 of the rubber roll 1 and the pair of wrapping tape rolls 1
Adjust the 3 and 14 (see Fig. 4) so that a tension of 0.8 kgf will be applied and make contact, and in that state the rubber roll 1
It was moved to the outside at a speed of 5 mm / sec to remove burrs remaining on the surface of the cored bar. The wrapping tape 10 was made of PET and had a thickness of 0.3 mm and a width of 3.5 mm. When the rubber roll obtained by the above steps was inspected, burrs adhering to the rubber roll and the core metal thereof were completely removed.

[0017]

According to the present invention, burrs adhering to both ends of a rubber roll and a cored bar can be removed completely mechanically and efficiently, and efficiently.

[Brief description of drawings]

FIG. 1 is an explanatory view showing positions where burrs adhering to a rubber roll are cut with a wire in the method for removing burrs of a rubber roll of the present invention.

FIG. 2 is an explanatory diagram showing an example of a state in which tension is applied to a wire that cuts a rubber roll.

FIG. 3 is an explanatory diagram showing an example of an operating state of a wrapping tape.

FIG. 4 is an explanatory diagram of a state in which tension is applied to the wrapping tape.

[Explanation of symbols]

1 rubber roll 2 Metal core of rubber roll 3 wires 4,9 Bali 5,6 clamping member Roll for 7,8 wire 10 wrapping tape 11, 12 clamping member 13, 14 Roll for wrapping tape

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-1-301213 (JP, A) JP-A-58-98233 (JP, A) JP-A-6-182778 (JP, A) 58311 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B29C 37/00-37/04

Claims (2)

(57) [Claims] 1. A wire is brought into contact with both end faces of a rubber portion of the rubber roll while rotating the rubber roll ,
From the outer peripheral surface to the core metal or from the core metal to the outer peripheral surface.
The wire to the core metal.
By moving along the core bar while touching,
A method for removing burrs from a rubber roll, characterized by removing burrs. 2. The method of removing burr according to claim 1, wherein
A method for removing burrs from a rubber roll, which comprises moving the wrapping tape along the core metal after the burrs are removed from the rubber roll by a yarn maker, while the wrapping tape is in contact with the core metal .