JPH11235690A - Exhaust structure in industrial robot and industrial robot provided with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an industrial robot capable of displaying sufficient exhaust performance even if the robot is small-sized. SOLUTION: In an industrial robot A provided with a thin and long frame 30 extending in the front and rear directions, a guide rail 32 extending in a straight line along the frame 30 on the upper surface of the frame 30 and a moving body 34 provided so that the moving body 34 may freely move back and forth on the guide rail 32, a cylindrical exhaust duct 35 extending along the guide rail 32 is provided in a state that the exhaust duct 35 retreats from a traveling area of the moving body 34 on the left side and/or the right side of the guide rail 32, the exhaust duct 35 is constituted by being provided with an inlet port 36 opened to the side of the guide rail 32 for every prescribed interval of the longitudinal direction, and exhaust on the frame 30 is taken into the exhaust duct 35 from the inlet port 36 and is exhausted from an opening tip part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an exhaust structure for an industrial robot and an industrial robot.

[0002]

2. Description of the Related Art Conventionally, there has been an industrial robot (A ') as shown in FIG. That is, an elongated and rectangular parallelepiped-shaped frame (10) having left and right ends in the width direction, respectively,
A pair of guide rails (12) provided on the left and right sides of the upper surface of the frame (10), respectively; and a movable body (14) provided reciprocally on the guide rails (12). There was an industrial robot (A ′) equipped with When a robot having such a configuration is used in a clean room of a manufacturing factory for semiconductors or the like, dust and the like generated from movable parts such as the guide rails and movable bodies are prevented from scattering into the clean room to prevent the cleanness from being reduced. Therefore, exhaust facilities are provided.
The conventional exhaust structure has the following configuration. That is, the inside of the frame (10) is hollow, and the frame internal space (16) is open at the front end face (18) and the rear end face (not shown). In addition, an air inlet (20) penetrating from the upper surface to the internal space (16) is provided on the upper surface of the frame.
Are arranged side by side at predetermined intervals in the front-rear direction. The air on the frame (10) is taken into the frame internal space (16) from the above-described intake port (20), flows through the internal space (16), and is discharged from the front end face (18) or the rear end face. As a result, air containing dust generated in the frame is sucked, and dust from the robot is prevented from scattering into the clean room.

[0003] However, with the recent miniaturization of the industrial robot (A '), it has become difficult to machine the frame (10) into a hollow, and it has become difficult to employ the conventional exhaust structure.

[0004] The dust collecting structure of the orthogonal robot is as follows.
There is the following proposal (see JP-A-5-16092). That is, a housing having a storage space for housing a ball screw and a nut that moves linearly by rotation of the ball screw, and a connection for connecting the moving member and the nut to support the moving member outside the housing. The passage through which the part passes is a dust collecting structure of an orthogonal robot in which a casing is formed, and a dust collecting pipe having an intake hole is arranged along the passage, and the dust collecting pipe is used as a pressure reducing means. A dust collection structure of an orthogonal robot has been proposed in which the inside of the dust collection pipe is maintained at a negative pressure by connecting.

[0005] However, in the dust collection structure of the orthogonal robot described above, since the dust collection pipe is arranged outside the frame (housing), the space therefor is located outside the frame (housing). It had to be provided separately, which also led to an increase in size.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an exhaust structure capable of sufficiently exhibiting exhaust performance even with a small industrial robot. Another object of the present invention is to provide an industrial robot having the exhaust structure.

[0007]

The exhaust structure of the industrial robot according to the present invention is provided with a guide rail extending linearly along the upper surface of an elongated frame extending in the front-rear direction and moving on the guide rail. An exhaust structure for an industrial robot in which a body is provided so as to be able to reciprocate, wherein a tubular exhaust duct extending along the guide rail is provided on a left and / or right side of the guide rail. The exhaust duct is provided in a retracted state, and the exhaust duct is provided with an intake port opened on the guide rail side at predetermined intervals in the longitudinal direction, and exhausts the frame from the intake port to the exhaust duct. It is taken in and discharged from the opening end.

[0008] In the exhaust structure according to the second aspect, since the exhaust duct is provided inside at least one of the left and right walls, the exhaust structure can be reduced in size.
Further, if the exhaust duct has a rectangular cylindrical shape, and the opening end of the exhaust duct is larger in the vertical direction extending in the vertical direction than in the horizontal side extending in the width direction, without increasing the dimension in the width direction. This is even more preferable because exhaust can be efficiently performed even in a narrow space.

An industrial robot according to the present invention is provided with an elongated frame extending in the front-rear direction, a guide rail extending linearly along the frame on the upper surface of the frame, and reciprocally traveling on the guide rail. An industrial robot having a movable body, wherein a left and / or right side of the guide rail has a cylindrical exhaust duct extending along the guide rail in a state where the exhaust duct is retracted from a traveling area of the movable body. Provided, the exhaust duct is provided with an intake port opened on the guide rail side at predetermined intervals in the longitudinal direction thereof, and takes in exhaust gas on the frame from the intake port into the exhaust duct. It is designed to be discharged from the opening end.

[0010] In the industrial robot according to the fourth aspect,
Since the exhaust duct is provided inside at least one of the left and right walls, the size of the industrial robot can be reduced. Further, if the exhaust duct has a rectangular cylindrical shape, and the opening end of the exhaust duct is larger in the vertical direction extending in the vertical direction than in the horizontal side extending in the width direction, without increasing the dimension in the width direction. This is even more preferable because exhaust can be efficiently performed even in a narrow space.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An industrial robot (A) showing one embodiment of the present invention will be described with reference to FIGS. A guide rail (32) extending in the front-rear direction is provided on the upper surface of an elongated plate-shaped frame (30) extending in the front-rear direction, with both left and right ends rising in the width direction. On this guide rail (32), a movable body (running) that linearly reciprocates (runs) on the guide rail (32) by a conveying means (not shown) such as a belt or a ball screw provided inside the frame (30). 34)
Is provided.

An exhaust duct (35) formed of a tubular body having a square cross section is provided on both left and right sides in the width direction of the frame (30) (inside the rising portion on the frame (30)).
Is provided. The exhaust duct (35) extends along the guide rail (32) and is provided in a state of being retracted from the traveling area of the movable body (34). The square shape of the opening at the opening end of the exhaust duct (35) is shown in FIG.
As shown in FIG. 3, the vertical side extending in the vertical direction (vertical direction) is larger than the horizontal side extending in the width direction (horizontal direction).

One end of the exhaust duct (35) is open at the front end (30a) of the frame (30) (the other end (rear end of the exhaust duct (35) [shown in the figure]). Zu]) is closed). The exhaust duct (35) is provided with an intake port (36) opened at the guide rail (32) side at predetermined intervals in the longitudinal direction. The intake port (36)
The exhaust duct (3) is clearly shown in FIG.
5) penetrates the peripheral wall. The exhaust duct (3
5) can be provided on either the left or right side of the guide rail (32).

In the industrial robot (A) having the above configuration,
The air containing dust on the frame (30) is taken into the exhaust duct (35) through the intake port (36) as shown by arrows in FIGS. 1 to 3, and the open end of the exhaust duct (35). The air is discharged to the outside by a suction device (not shown) such as a vacuum pump connected to the section (35a).

Note that the exhaust duct (3
The cross-sectional shape of 5) has a vertically long "b" shape as shown in FIG. 4A, but is not limited to this, and is not limited to this, as shown in FIG. 4B. The shape may be a letter shape or an inverted "L" shape as shown in FIG. By doing so, there is an operational effect that the industrial robot (the exhaust structure in the industrial robot) can be further reduced in size.

[0016]

According to the industrial robot of the present invention, there is no need to make the frame hollow, and only the exhaust duct is mounted on the frame. As described above, according to the present invention, even if the industrial robot is small, sufficient exhaust performance can be provided.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of an industrial robot showing one embodiment of the present invention.

FIG. 2 is a partial cross-sectional plan view of the previous figure.

FIG. 3 is an enlarged perspective view of a main part showing a flow of air to an exhaust duct.

FIG. 4 is a sectional view showing a shape of an exhaust duct;
(A) is the shape of the exhaust duct in FIGS. 1 to 3, (b)
(C) shows the shape of an exhaust duct according to another embodiment.

FIG. 5 is a partial perspective view of a conventional industrial robot.

[Description of Signs] A: Industrial robot 30: Frame 32: Guide rail 34: Movable body 35: Exhaust duct 35a: Open end of exhaust duct 36: Inlet

Claims (4)

[Claims] 1. An exhaust system for an industrial robot in which a guide rail extending linearly along the frame is provided on an upper surface of an elongated frame extending in the front-rear direction, and a movable body is provided on the guide rail so as to be able to reciprocate. A tubular exhaust duct extending along the guide rail is provided on the left and / or right side of the guide rail in a state of being retracted from a traveling area of the movable body. An intake port opened to the guide rail side is provided at predetermined intervals in the longitudinal direction, and exhaust gas on the frame is taken into the exhaust duct from the intake port and discharged from the open end. An exhaust structure for an industrial robot characterized by what is done. 2. The frame is provided with walls extending upward at both ends in the width direction of the frame, and the exhaust duct is provided inside at least one of right and left walls, and the exhaust duct is provided. Has a square cylindrical shape, and the shape of the opening at the opening end of the exhaust duct is such that the vertical side extending in the vertical direction is larger than the horizontal side extending in the width direction. The exhaust structure according to claim 1. 3. An elongated frame extending in the front-rear direction, a guide rail extending linearly along the upper surface of the frame, and a movable body provided reciprocally on the guide rail. An industrial robot comprising: a left and / or right side of the guide rail, wherein a cylindrical exhaust duct extending along the guide rail is provided in a state of being retracted from a traveling region of the movable body; The duct is provided with an intake port opened on the guide rail side at predetermined intervals in the longitudinal direction thereof, and takes in exhaust gas on the frame from the intake port into the exhaust duct and discharges the exhaust gas from the open end. An industrial robot characterized by doing so. 4. The frame is provided with walls extending upward at both ends in the width direction of the frame, and the exhaust duct is provided inside at least one of right and left walls, and the exhaust duct is provided. Has a square cylindrical shape, and the shape of the opening at the opening end of the exhaust duct is such that the vertical side extending in the vertical direction is larger than the horizontal side extending in the width direction. The industrial robot according to claim 3.