JP3068680U - Rubber deburring device for rolls for OA equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an OA roll rubber burr removing device excellent in working efficiency, capable of mechanically removing a rubber burr adhered to a shaft at the time of forming an OA roll mechanically with high accuracy and safely. A rubber burr removing device for an OA roll according to the present invention includes an elastic rubber body having a concave portion having the same shape as a shaft.
And a drive motor 4 for rotating this via a coupling 5, and a recess 8 formed in the elastic rubber body 3 is provided with an OA
It is formed so as to have the same shape as the tip of the shutter 2 exposed from the rubber portion 1 of the roll.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a device for removing rubber burrs attached to a shaft of a rubber roll for OA equipment formed by press molding, and particularly to a heat generating material having elasticity of JIS hardness of 20Hs or more such as NBR, SBR, silicone, fluorine rubber, urethane rubber and the like. The present invention relates to an apparatus for removing rubber burrs of an OA rubber roll made of a curable resin.

[0002]

[Prior art]

 Normally, a roll (hereinafter simply referred to as an “OA roll”) 31 for OA equipment such as a copying machine, a printer, a facsimile, etc., formed by press molding, as shown in FIG. A rubber burr 34 generated during pressure molding adheres to the surface of the shaft 33 exposed from the rubber portion 32 after being removed from the mold. Since the rubber burr 34 is not preferable in terms of performance and appearance of the OA roll 31, it must be accurately and neatly removed.

For this reason, as shown in FIG. 4, conventionally, one shaft 33 of the OA roll 31 is held by a holding chuck 36 connected to a motor 35, and the other shaft 33 is held by a rotary center chuck 37. With the motor 35 driven and the OA roll 31 rotated, the worker presses the scraper 38 held in one hand against the rubber burr 34 attached to the shaft 33 to remove the rubber burr 34. The rotation center chuck 37 is configured to be moved back and forth by an actuator 39 via a bearing mechanism 40.

[0004]

[Problems to be solved by the invention]

 However, since this work is manual work, the work efficiency gradually decreases due to fatigue generated with the lapse of time, and the accuracy of removing rubber burrs also decreases. Furthermore, because the scraper is pressed onto the curved surface of the rubber burr attached to the shaft, the scraper slips, and there is a danger that the finger tip will touch the shaft rotating at high speed and cause injury. Improvement was desired.

Therefore, an object of the present invention is to provide an OA roll rubber burr removing apparatus with excellent work efficiency, which can remove the rubber burr adhered to the shaft at the time of forming the OA roll mechanically with high precision and safely. To provide.

[0006]

[Means for Solving the Problems]

 That is, the device for removing rubber burrs of the OA roll according to the present invention is a device for removing rubber burrs attached to the shaft during compression molding of the OA roll. The device is provided with an elastic rubber body having a recess having the same shape as the shaft and a coupling. It has a drive motor to rotate. The recess formed in the elastic rubber body can be formed by, for example, spot facing so as to have the same shape as the tip of the shaft exposed from the rubber portion of the OA roll.

The material of the elastic rubber body in which the concave portion is formed is preferably a thermosetting resin such as NBR, SBR, silicone, fluoro rubber, urethane rubber, etc., and has a JIS hardness of 5 to 90 Hs, preferably 20 to 90 Hs. A material having the following elasticity is particularly suitable for deburring OA rolls. An elastic rubber body selected from such materials and hardness can effectively transmit a removing force due to rotation to rubber burrs.

[0008] By adopting the configuration as in the present invention, the deburring work conventionally performed with both hands can be easily performed with one hand, like sharpening a pencil with an electric pencil sharpener (electric sharpener). The work efficiency is improved, and the fingertip does not come into contact with the rotating body, thereby improving safety.

[0009]

[Embodiment of the invention]

 Hereinafter, the rubber burr removing device of the present invention will be described in more detail with reference to FIGS. FIG. 1 is a schematic perspective view showing the entire rubber burr removing device of the present invention, and FIGS. 2A, 2B and 2C are schematic front views showing a procedure of rubber burr removal using the device of FIG. It is a figure, and only an elastic rubber body (concave rubber body 3) and a metal frame 9 are drawn in a sectional view.

The rubber burr removing device of the OA roll according to the present invention includes a concave rubber body 3 made of elastic rubber subjected to spot facing so as to have the same shape as the shaft 2 exposed from the rubber portion 1. The motor comprises a rotary drive motor 4 for rotating, a concave rubber body 3, a metal frame 9 for fixing the same, a coupling 5 for connecting the motor 4, and a base 6 for supporting these.

In order to remove the rubber burr 7 attached to the shaft 2, the motor 4 is driven to rotate the metal frame 9 and the concave rubber body 3 via the coupling 5 (see FIG. 2A). At this time, only the concave rubber body 3 may be used, but the provision of the metal frame 9 further fixes the concave rubber body 3 and improves rotation. In this state, the shaft 2 with the rubber burr 7 attached is inserted into the concave portion 8 of the concave rubber body 3 (see FIG. 2B). The rubber burr 7 attached to the shaft 2 is peeled off by rotation in the concave rubber body 3 (see FIG. 2C). The rotation speed of the motor 4 at this time is desirably selected from the range of 100 to 500 rpm in consideration of the removal effect of the rubber burr 7 and safety.

[0012]

【Example】

 The apparatus for removing rubber burrs of the OA roll of the present invention shown in FIG. 1 was used. The concave rubber body was made of NBR resin having a JIS hardness of 40 Hs, and was subjected to spot facing to form a concave portion. An AC speed control motor 15 W (manufactured by Oriental) was used as a drive motor, and the number of revolutions was set to 300 rpm. The coupling used was of a helical type (Miki Booley). Using this apparatus, the operation of removing rubber burrs attached to the shaft during compression molding of the OA roll was performed according to the procedure shown in FIG.

The time required for removing the rubber burrs of the shaft using the apparatus of the present invention was as short as 3 seconds, compared to 30 seconds in the conventional method by hand. In addition, compared to the conventional work that used a scraper by hand, fine powder burrs after removal did not remain in the corners of the shaft, and the removal work was completed accurately and in a short time.

[0014]

[Effect of the invention]

 According to the OA roll rubber burr removing device of the present invention, it is possible to accurately remove rubber burr which is important in terms of product quality and appearance, and to provide a practically desirable OA roll. Further, in addition to shortening the working time, it is possible to relieve the worker from dangerous work and to avoid the worker's fatigue.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing the entire rubber burr removing device of the present invention.

FIG. 2 is a schematic front view showing a procedure of removing rubber burrs using the apparatus of FIG. 1, wherein (a) is a state before removing rubber burrs;
(B) shows a state during removal of rubber burrs, and (c) shows a state after removal of rubber burrs.

FIG. 3 is a perspective view of the OA roll, showing a state in which rubber burrs adhere to a shaft when the OA roll is formed.

FIG. 4 is a perspective view showing a conventional manual operation of removing rubber burrs.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rubber part 31 ... Rubber roll 2 ... Shaft 32 ... Rubber part 3 ... Recessed rubber body 33 ... Shaft 4 ... Motor 34 ... Rubber burr 5 ... Coupling 35 ... Motor 6 ... Base 36 ... Holding chuck 7 ... Rubber burr 37 ... Rotation center Chuck 8 ... concave portion 38 ... scraper 9 ... metal frame 39 ... actuator 40 ... bearing mechanism

Claims (1)

[Utility model registration claims] An apparatus for removing rubber burrs attached to a shaft during compression molding of a roll for OA equipment, comprising: an elastic rubber body having a concave portion having the same shape as the shaft; and a drive motor for rotating the elastic rubber body via a coupling. A rubber burr removing device for a roll for OA equipment, comprising: