JPH03221396A - Cable support tool for industrial robot - Google Patents

Abstract

PURPOSE:To prevent the occurrence of dust by arranging a spring supporting a robot member erected on the joint or arm of an industrial robot with a cable, a bearing provided in the support member, and fixing members provided on a vertical shaft rotatably supported on the bearing to support the cable. CONSTITUTION:The cable 8 of an industrial robot is pinched and fixed by a pair of fixing members 16. The occurrence and diffusion of dust due to sliding can be prevented, and the pollution of a clean room can be surely prevented. The force applied to the cable 8 at the time of the bending action of the cable 8 is damped and absorbed by the flexible inclination of a spring 10. The effective maintenance of the function of the cable 8 over a long period can be surely expected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement of a cable support for an industrial robot used in a clean room or the like.

(Prior Art) Figures 2 and 3 show cable supports for conventional industrial robots used in clean rooms, etc. In the figures, (1) is the main body of the industrial robot; 1) is provided with an elevating body (2) that can move up and down, as shown in Fig. 2, and on the top of this elevating body (2) is a first motor with a built-in motor.
A joint (3) is pivotally connected, and this first joint (3) has a
A rotatable first arm (4) extends horizontally. Further, a second joint (5) with a built-in motor is provided at the tip of the first arm (4), and the second joint (5) has the following functions:
A rotatable second arm (6) is horizontally pivoted, and a third joint (7) for detachably holding a hand, etc. (not shown) is provided at the tip of the second arm (6). are doing.

(8) is a plurality of cables that supply signals, power, etc., and 0) is a support that is erected on the top of the first and second joints (3) and (5) via fasteners, respectively. This support (9) is the first and second joint (3) as shown in Figure 3.
, a main body (9a) vertically screwed onto the top of the main body (9a), and a substantially U-shaped support portion (9b) curved at the top of the main body (9a). The cable (8) is placed inside the cable (9b) to prevent the cable (8) from falling or sagging.

However, the support tool (9) is the first and second arms (4).

The cable (8), which bends at a constant curvature as the cable (6) rotates, is supported to prevent the cable from falling or drooping. The cable (8) having a predetermined bending rigidity slides on the curved inner surface of the support portion (9b) during the bending operation.

Furthermore, as a prior art document of this kind, Japanese Patent Application Laid-Open No. 1341-1983
There are publications such as Publication No. 89.

(Problems to be Solved by the Invention) A conventional cable support for an industrial robot is configured as described above, and the cable (8) slides on the curved inner surface of the support part (9b) while bending at a constant curvature. Therefore, there is a problem in that dust is generated and diffused due to the sliding movement, and the interior of the clean room is significantly contaminated.

The present invention has been made in view of the above, and an object of the present invention is to provide a cable support for an industrial robot that can reliably prevent contamination in a clean room.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention includes a spring that is erected at the top of a joint or arm of an industrial robot equipped with a cable and supports a support member, and a spring that supports a support member. The present invention is characterized in that a cable support for an industrial robot is constituted by a bearing disposed on the bearing, and a fixing member provided on the upper part of the vertical shaft rotatably supported by the bearing and supporting the cable.

(Function) According to the present invention, the force that bends the cable due to the rotation of the arm is attenuated and absorbed by the rotating action of the bearing and the tilting action of the spring, thereby preventing the generation of dust, maintaining the function of the cable, and Contamination of the clean room can be prevented.

(Example) Hereinafter, the present invention will be described in detail based on an example shown in FIG. 1. In the figure, (10) is a fixed plate (11 ), and a support member (12) is placed on the top of this coiled spring (lO).
A spring (1) is arranged at the bottom of this support member (12).
A fixing plate (13) that fits on the top of 0) is screwed on.
Further, a bearing (14) is arranged horizontally inside the support member (12). A rotatable vertical shaft (15) is vertically inserted into this bearing (14), and a pair of vertically opposed fixing members (16) are arranged at the top of this vertical shaft (15). A cable (8) is sandwiched between the pair of fixing members (16).

However, since the cable (8) is clamped and fixed to the pair of fixing members (!6), it is possible to prevent the generation and spread of dust due to sliding, and it is possible to reliably prevent clean room contamination. . Furthermore, when the cable (8) is bent, the force acting on the cable (8) is vertical it! th
Since it is attenuated and absorbed by the rotation of the cable (15) and the flexible inclination of the spring (lO), it can be reliably expected that the function of the cable (8) will be effectively maintained over a long period of time.

In addition, in the above embodiment, the cable support according to the present invention is
, the second joints (3) and (5) are shown standing up above, but the present invention is not limited to this.
It goes without saying that the arms (41, (61) may be erected on the upper part of the arm, etc.).

(Effects of the Invention) As described above, according to the present invention, there is provided a spring that is erected at the top of a joint or arm of an industrial robot equipped with a cable and supports a support member, and a bearing disposed within the support member. The cable support of the industrial robot is composed of the fixed member provided on the upper part of the vertical shaft which is rotatably supported by the bearing and supports the cable, thereby preventing the generation of dust.
It is possible to prevent contamination of the clean room and maintain the functionality of the cable over a long period of time.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing one embodiment of the cable support for an industrial robot according to the present invention, FIG. 2 is an overall view showing a conventional cable support for an industrial robot, and FIG. I
It is a II-III line arrow view. In the figure, (3) is the first joint, (5) is the second joint, (8) is the cable, (10) is the spring, (12) is the support member, (1
4) is a bearing, (15) is a vertical shaft, and (16) is a pair of fixing members. Note that the same reference numerals in the figures indicate the same or corresponding parts. Figure 1 Figure 1 Figure 1

Claims (1)

[Claims] A spring installed on the joint or arm of an industrial robot equipped with a cable to support a support member, a bearing disposed within the support member, and a vertical shaft rotatably supported by the bearing. 1. A cable support for an industrial robot, comprising a fixing member provided on the upper part and supporting the cable.