CN108453786B - An inverted side-mounted cable protection structure for industrial robots - Google Patents

Abstract

The present invention relates to an inverted side-mounted cable protection structure for an industrial robot, comprising a base assembly, a reducer mounted on the base assembly, and a swivel assembly mounted on the reducer, wherein a rotating protective sleeve is provided in the base assembly, which moves around the cable in a region and allows the cable to pass through, and a cable protective sleeve is provided in the swivel assembly, which is used to install the cable and prevent the cable from contacting the swivel assembly; a square notch as a cable outlet is provided on the outer side of the rotating protective sleeve; an arc-shaped boss is provided on the cable protective sleeve, and an arc-shaped notch matched with the arc-shaped boss is provided on the swivel; both the rotating protective sleeve and the cable protective sleeve are made of noise-proof ABS material, and the present invention respectively adds protective sleeves on the robot swivel and the base to form double-layer protection, so that when the robot is in an inverted or side-hanging state, friction with a casting is avoided, and at the same time, the material of the protective sleeve is noise-proof ABS, which will not generate loud noise, thereby increasing the service life of the cable and reducing the maintenance cycle and cost.

Description

An inverted side-mounted cable protection structure for industrial robots

Technical Field

The invention relates to the technical field of cable arrangement of industrial robots, in particular to an inverted side-mounted cable protection structure for industrial robots.

Background Art

As an important component of the robot, the robot cable directly affects the service life of the robot. For general six-axis industrial robots, especially light-load robots, the robot cables are arranged inside the robot body. When the robot axes are in a linked state, the robot cables at the joints will be subjected to the combined action of bending moment, torsion and stretching. If the robot cables at this position are not processed or structurally optimized, long-term torsion will cause damage to the cables, which will cause robot alarms, shutdowns and other faults.

At present, the treatment of robot cables includes two aspects. First, optimize the material and process of the cable; second, improve the working environment of the cable and optimize the wiring structure. Under normal circumstances, the internal cables of robots used for ground installation or high-platform installation will be fixed and treated by applying cable grease according to the pre-set installation method. With the development of industrial robot technology and the rapid expansion of application fields, robots used in logistics warehousing, machine tools, unloading and other fields require robots to be able to be installed upside down or on the side. The main advantage of inverted installation is that the robot can work upside down on the rack to save floor space and facilitate the flow of objects on the ground. However, when the robot is in an inverted state, the robot's cables will be affected by reverse gravity, detach from the pre-fixed position, fall in the opposite direction, and contact the casting surface of the robot, which will accelerate the wear of the cables, thereby reducing the service life of the robot and increasing maintenance costs.

Summary of the invention

In order to avoid and solve the above technical problems, the present invention proposes an inverted side-mounted cable protection structure for an industrial robot.

The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

A cable protection structure for an inverted side-mounted industrial robot comprises a base assembly, a reducer mounted on the base assembly, and a swivel assembly mounted on the reducer. The base assembly is provided with a rotating protective sleeve that moves around the cable in a region and allows the cable to pass through; the swivel assembly is provided with a cable protective sleeve that is used to install the cable and prevent the cable from contacting the swivel assembly.

As a further improvement of the present invention, the rotating protective sleeve is an integrated shell structure composed of two concentric cylinders, and the outer side surface of the rotating protective sleeve is provided with a square notch serving as a cable outlet.

As a further improvement of the present invention, the base assembly includes a base for mounting a rotating protective sleeve, and a first cable fixing sheet metal connected to the base by screws.

As a further improvement of the present invention, the base inner ring is provided with a plurality of first fixing grooves, the bottom of the rotating protective sleeve is provided with a first boss matching with the first fixing grooves and having the same number. The rotating protective sleeve is connected to the first fixing grooves on the base by screws.

As a further improvement of the present invention, the swivel seat portion includes a swivel seat installed at the upper end of the cable protective cover, and a second cable fixing sheet metal fixed in the swivel seat by screws.

As a further improvement of the present invention, the bottom of the rotating seat is provided with a plurality of second fixing grooves, the upper end of the cable protective sleeve is provided with a second boss matching with the second fixing grooves and having the same number. The cable protective sleeve is connected to the second fixing groove on the rotating seat by screws.

As a further improvement of the present invention, the cable protective cover is provided with an arc-shaped boss serving as a cable outlet, and the swivel seat is provided with an arc-shaped notch matching with the arc-shaped boss.

As a further improvement of the present invention, the rotating protective cover and the cable protective cover are both made of noise-proof ABS material.

As a further improvement of the present invention, a gap is provided between the rotating protective cover and the cable protective cover.

As a further improvement of the present invention, a sealing ring is provided at the connection between the base assembly and the swivel assembly, and the sealing ring is a VR-type sealing ring.

The beneficial effects of the present invention are:

Compared with the existing technology, by adding protective covers on the robot's swivel seat and base respectively, double-layer protection is formed. When the robot is in an inverted or side-hanging state, the cable is guaranteed to contact the protective cover to avoid friction with the casting. At the same time, the material of the protective cover is noise-proof ABS, which can not only ensure the low-friction contact movement of the cable, but also ensure that no loud noise is generated during the movement, thereby increasing the service life of the robot cable, reducing the maintenance cycle and cost, meeting different application scenarios, and providing a more comfortable working environment.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a cross-sectional view of the overall structure of the present invention;

FIG2 is a schematic diagram of the three-dimensional structure of the base of the present invention;

FIG3 is a schematic diagram of the three-dimensional structure of the rotating protective sleeve of the present invention;

FIG4 is a schematic diagram of the three-dimensional structure of the first cable fixing sheet metal of the present invention;

FIG5 is a schematic diagram of the three-dimensional structure of the transposition device of the present invention;

FIG6 is a schematic diagram of the three-dimensional structure of the cable protective cover of the present invention;

FIG7 is a schematic diagram of the three-dimensional structure of the second cable fixing sheet metal of the present invention;

FIG8 is a schematic diagram of the structure of the present invention when installed with a robot cable.

DETAILED DESCRIPTION

In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below.

As shown in Figures 1 to 8, an inverted side-mounted cable protection structure for an industrial robot includes a base assembly 1, a reducer 2 installed on the base assembly 1, and a swivel assembly 3 installed on the reducer 2. The base assembly 1 is provided with a rotating protective cover 12 that moves around a cable 4 in a region and allows the cable 4 to pass through; the swivel assembly 3 is provided with a cable protective cover 32 for installing the cable 4 and preventing the cable 4 from contacting the swivel assembly 3.

The rotating protective cover 12 is an integrated shell structure composed of two concentric cylinders, and a square notch 12b as a cable outlet is provided on the outer side of the rotating protective cover 12. When in use, the square notch 12b of the cable outlet facilitates the arrangement of the cable 4, and the rotating protective cover 12 can block the contact between the cable 4 and the base 11.

The base assembly 1 includes a base 11 on which a rotating protective cover 12 is installed, and a first cable fixing sheet metal 13 connected to the base 11 by screws.

The base 11 is provided with a plurality of first fixing grooves 11a in its inner ring, and the bottom of the rotating protective cover 12 is provided with a first boss 12a which matches with the first fixing grooves 11a and is equal in number. The rotating protective cover 12 is fixed in the first fixing grooves 11a on the base 11 by screws.

The swivel portion 3 includes a swivel 31 installed on the upper end of the cable protection cover 32 and a second cable fixing sheet metal 33 fixed in the swivel 31 by screws.

The bottom of the rotating seat 31 is provided with a plurality of second fixing grooves 31a, and the upper end of the cable protective cover 32 is provided with a second boss 32a that matches the second fixing grooves 31a and is equal in number. The cable protective cover 32 is connected to the second fixing grooves 31a on the rotating seat 31 by screws. When in use, the second boss 32a on the upper end of the cable protective cover is placed in the second fixing groove 31a of the rotating seat 31, so as to fix the cable protective cover 32.

The cable protective cover 32 is provided with an arc-shaped boss 32b as a cable outlet, and the rotating seat 31 is provided with an arc-shaped notch 31b that cooperates with the arc-shaped boss 32b. When in use, the cooperation between the arc-shaped boss 31b and the arc-shaped notch 32b can prevent the cable 4 from contacting the casting.

The rotating protective cover 12 and the cable protective cover 32 are both made of anti-noise ABS material. Since the anti-noise ABS material with a low friction coefficient is used, the low friction contact between the cable 4 and the rotating protective cover 12 and the cable protective cover 32 is ensured, the service life of the cable 4 is protected, and the noise generated by the friction between the cable 4 and the protective cover can be reduced.

A gap is provided between the rotating protective cover 12 and the cable protective cover 32. Due to the rotation of the rotating seat 31, a certain gap is reserved to ensure that there is no motion interference between the rotating protective cover 12 and the cable protective cover 32.

A sealing ring 34 is provided at the connection between the base assembly 1 and the swivel assembly 3. The sealing ring 34 is a VR type sealing ring. The VR type sealing ring can prevent dust and water vapor from entering the interior of the base 11, improve the protection level, and prevent the cable 4 from being affected by the external working environment.

When the present invention is used, the reducer 2 is mounted on the upper end of the base 11, the first boss 12a of the rotating protective cover 12 is placed in the first fixing groove 11a of the base 11, the rotating protective cover 12 is fixed by screws, the arc boss 32b is placed in the arc notch 31a of the rotating seat 31, the second boss 32a of the cable protective cover 32 is placed in the second fixing groove 31a of the rotating seat 31, the cable protective cover 32 is fixed by screws, the sealing ring 34 is installed on the lower end of the rotating seat 31, and finally, the rotating seat 31 is fixed on the reducer 2, the cable 4 enters from the base 11, passes through the inside of the rotating protective cover 12, and the cable 4 is fixed to the rotating seat 31. , spirally arranged, one end is fixed to the first cable fixing sheet metal 13, and the other end is fixed to the second cable fixing sheet metal 33. When the robot is running, the swivel seat 31 and the base 11 move relative to each other. Since both ends of the cable 4 are fixed, it is ensured that the cable 4 only runs inside the rotating protective cover 12. When the robot is installed on the ground, the cable 4 contacts and moves with the rotating protective cover 12. When the robot is inverted or sideways, the cable 4 is affected by the reverse gravity, and the cable 4 will fall in the reverse direction and touch the cable protective cover 32, avoiding contact between the cable 4 and the casting surface of the swivel seat 31, thereby increasing the service life of the cable 4.

The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims (8)

1. An inverted side-mounted cable protection structure for an industrial robot, characterized in that it comprises a base assembly (1), a reducer (2) mounted on the base assembly (1), and a swivel assembly (3) mounted on the reducer (2); the base assembly (1) is provided with a rotating protective sleeve (12) which moves around a cable in a region and allows the cable to pass through; the swivel assembly (3) is provided with a cable protective sleeve (32) which is provided with the cable and prevents the cable from contacting the swivel assembly (3); the rotating protective sleeve (12) is an integrated shell structure composed of two concentric cylinders, and the outer side surface of the rotating protective sleeve (12) is provided with a square notch (12b) as a cable outlet; the swivel assembly (3) comprises a swivel (31) mounted on the upper end of the cable protective sleeve (32), and a second cable fixing sheet metal (33) fixed in the swivel (31); when the robot is inverted or side-mounted, the cable (4) is affected by the reverse gravity and falls in the reverse direction and touches the cable protective sleeve (32), thereby preventing the cable (4) from contacting the casting surface of the swivel (31). 2. An inverted side-mounted cable protection structure for an industrial robot according to claim 1, characterized in that: the base assembly (1) includes a base (11) on which a rotating protective cover (12) is installed, and a first cable fixing sheet metal (13) connected to the base (11). 3. According to claim 2, an inverted side-mounted cable protection structure for an industrial robot is characterized in that: the inner ring of the base (11) is provided with a plurality of first fixing grooves (11a), and the bottom of the rotating protective cover (12) is provided with first bosses (12a) that match the first fixing grooves (11a) and are equal in number. 4. According to claim 1, an inverted side-mounted cable protection structure for an industrial robot is characterized in that: a plurality of second fixing grooves (31a) are provided around the bottom of the swivel seat (31), and an equal number of second bosses (32a) are provided at the upper end of the cable protection sleeve (32) to match the second fixing grooves (31a). 5. The inverted side-mounted cable protection structure for an industrial robot according to claim 1 is characterized in that: the cable protection sleeve (32) is provided with an arc-shaped boss (32b) serving as a cable outlet, and the swivel seat (31) is provided with an arc-shaped groove (31b) that cooperates with the arc-shaped boss (32b). 6. The inverted side-mounted cable protection structure for an industrial robot according to claim 1, characterized in that the rotating protection cover (12) and the cable protection cover (32) are both made of noise-proof ABS material. 7. The inverted side-mounted cable protection structure for an industrial robot according to claim 1, characterized in that a gap is provided between the rotating protection cover (12) and the cable protection cover (32). 8. An inverted side-mounted cable protection structure for an industrial robot according to claim 1, characterized in that a sealing ring (34) is provided at the connection between the base assembly (1) and the swivel assembly (3), and the sealing ring (34) is a VR type sealing ring.