JPS6377684A - Industrial robot - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a robot, particularly an industrial robot suitable for use in an air cleaning room.

[Conventional technology]

In a conventional industrial robot, at least one side of a sliding shaft supported by an arm is exposed to the outside air, as described in Japanese Patent Application Laid-Open No. 59-224290.

[Problem that the invention seeks to solve]

In the above conventional technology, the grease adhering to the surface of the sliding shaft exposed to the outside air turns into mist and scatters into the air around the robot, and the dust adhering to the grease is released and enters the air from the gap between the slide bearings H. There was a problem that they would scatter together and pollute the indoor air.

Is the purpose of the present invention a robot that prevents dust from scattering? It is about providing.

[Means for solving problems]

The above object includes a bearing attached to an arm, a first cover attached to the arm to cover an upper part of the bearing, and a second cover attached to the arm to cover a lower part of the bearing; It consists of a negative pressure generator that communicates with the interior of either one of the first and second covers, and a passage attached to the bearing, and the passage is connected to the first cover.
This is achieved by communicating with the inside of the second cover.

[Effect]

The air inside the cover is sucked together with dust through the air flow path using suction piping and a negative pressure generator.

This prevents dust from scattering into the air purification chamber.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

The figure is a partial sectional view of an industrial robot according to the present invention.

1 is a main body base, 2 is a support, 3 is an arm support having a rotation axis parallel to the support 2, and a first arm 5 and a 27th arm.
- The arm 6 pivots in a direction perpendicular to the column 2.

Each 1st. The second arms 5 and 6 are driven by motors 8 and 9.

Further, 7 is a sliding shaft that linearly reciprocates up and down. This sliding shaft can be slid by a motor 10 and a drive shaft 11, is supported by the second arm 6 via a slide bearing 12, and has a hand 15 connected to its lower end to serve as a working shaft. Moreover, the upper side of the sliding shaft 7 and the sliding drive shaft 11. The motor 10 is covered by an upper cover 16, and the lower sliding shaft 7 of the second arm 6 is covered by a lower cover 17. Reference numeral 14 denotes an air pipe connected to the upper bar 16 to suck air and dust from inside the main body. This air pipe 14 is connected to a negative pressure generator 18. Reference numeral 19 is an exhaust pipe for discharging the air and dust sucked by the negative pressure generator 18 to the outside of the air cleaning room. On the other hand, reference numeral 13 denotes an air flow path provided near the slide bearing 12 supported by the second arm 6, which communicates the inside of the lower cover 17 with the upper cover 13.

In the robot configured as described above, when the sliding shaft 7 repeatedly slides, dust passes through the gap between the sliding bearings 12 and dust is generated, and the grease on the surface of the sliding shaft 7 turns into mist. According to this embodiment, the upper cover 16. which houses the dust generating parts such as the sliding shaft 71, the sliding bearing 12, and the sliding shaft driving part 10°11. Through the air passage 13 communicating with the inner space of the lower cover 17 and the second arm 6, the suction pipe 14 and the negative pressure generator 18 extract the air in the cover 16.17 space together with the dust generated in the dust generating section. Since the robot is sucked in and discharged through the exhaust pipe 19 to the outside of the air cleaning room in which the robot is installed, it is possible to prevent dust from scattering into the air cleaning room.

〔Effect of the invention〕

According to the present invention, it is possible to prevent the dust generated in the dust generating section of the robot body from scattering, so that there is an effect that the air in the air cleaning room in which the robot is installed is not contaminated.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional side view of a robot showing an embodiment of the present invention. 1...Base, 2...Strut, 3...Arm support 4
．． 4... Cable support, 5... First arm, 6...
...Second arm, 7...Sliding shaft, 8...Motor 1%
9...Motor 2゜lO...Motor 3.11...Sliding shaft drive unit, 12...Slide bearing, 13...Air flow path, 14...Suction piping, 15... huff 1', 16
...Top cover, 17...Bottom cover.

Claims (1)

[Claims] 1. A bearing attached to the arm, a first cover attached to the arm to cover the upper part of the bearing, a second cover attached to the arm to cover the lower part of the bearing, and the first cover attached to the arm to cover the lower part of the bearing. It consists of a negative pressure generator that communicates with the inside of either one of the first and second covers, and a passage attached to the bearing, and the passage communicates with the inside of the first and second covers. An industrial robot characterized by: