Improved universal mechanical arm

Abstract

The utility model relates to the technical field of mechanical arms, and discloses an improved universal mechanical arm which comprises an arm body and mounting heads arranged at the two ends of the arm body, the middle of the arm body is hollow to form a wire passing channel, and each mounting head comprises an assembling part, a connecting part and an assembling ring located between the assembling part and the connecting part. The outer diameter of the assembling ring is larger than that of the assembling part and that of the connecting part. The end part of the arm body is inserted and fixed with the connecting part; one end, close to the connecting part, of the assembling ring is used for stopping and abutting against the arm body; the assembling part is used for being in inserting fit with an external power unit. The end, close to the assembling part, of the assembling ring is used for stopping and abutting against the power unit. According to the mechanical arm, the assembly ring abuts against the arm body and the power units in a stopping mode, so that vibration generated when the power units work is buffered and eliminated, excessive vibration frequency is prevented from being transmitted through the arm body, the vibration elimination effect is achieved, the influence of vibration on the power units is effectively avoided, and then the service life of the mechanical arm is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical arms, in particular to an improved universal mechanical arm. Background Art

[0002] A robotic arm is a machine that imitates the movements of a human arm. It is equipped with multiple mechanical joints, and each mechanical joint is driven by a motor, thereby achieving multi-angle adjustment of the robotic arm. At the same time, due to its unique operational flexibility, the robotic arm has been widely used in industrial assembly, safety and explosion-proof and other fields. An arm body is connected between each motor, and the motor is supported by the arm body to achieve the connection of each mechanical joint in the robotic arm. The arm body and the motor of the existing robotic arm are usually connected by welding. After welding, the motors at both ends of the arm body will vibrate when working. Different motors have different working frequencies, and the vibration frequencies they generate will also be different. When different vibration frequencies are transmitted to the arm body, they will cause a certain impact on the arm body. Long-term use will cause damage to the motor and reduce the service life of the robotic arm, so improvement is needed. Utility Model Content

[0003] The main purpose of the utility model is to provide an improved universal mechanical arm, aiming to provide a mechanical arm with a long service life.

[0004] To achieve the above-mentioned purpose, the utility model proposes an improved universal mechanical arm, including an arm body and mounting heads arranged at both ends of the arm body. The middle part of the arm body is hollow and formed into a wire passing channel. The mounting head includes an assembly part, a connecting part and an assembly ring located between the assembly part and the connecting part. The outer diameter of the assembly ring is larger than the outer diameter of the assembly part and the outer diameter of the connecting part. The end of the arm body is plugged and fixed with the connecting part, and the end of the assembly ring close to the connecting part is used to stop and resist the arm body. The assembly part is used to plug and cooperate with an external power unit, and the end of the assembly ring close to the assembly part is used to stop and resist the power unit.

[0005] Specifically, a through hole is provided in the middle of the mounting head, which is connected to the wire passing channel, and a circular arc-shaped anti-scratch surface is formed on the inner side of the mounting head; a shock-absorbing bump is provided at the end of the assembly part, and an assembly hole is provided on the end face of the shock-absorbing bump, and the assembly hole is used to connect with the power unit.

[0006] Specifically, the arm body is cylindrical, the connecting portion is circular, the radius of the connecting portion is smaller than the radius of the arm body, and the outer wall of the connecting portion is in close contact with the inner wall of the cylinder.

[0007] Specifically, an abutment clamping platform is provided on one side of the assembly ring facing the connecting portion, and the end of the arm body abuts against the abutment clamping platform.

[0008] Specifically, a limiting surface is provided on one side of the assembly ring facing the assembly portion, the limiting surface is planar, and the limiting surface is used to abut against the power unit.

[0009] Specifically, the mounting head and the arm body are separately arranged, the inner wall of the arm body is provided with a first welding surface, the outer wall of the connecting part is provided with a second welding surface, and the mounting head and the arm body are welded and fixed to each other through the first welding surface and the second welding surface.

[0010] Specifically, a limiting groove is provided at the end of the inner wall of the arm body, and the first welding surface is located in the limiting groove.

[0011] Specifically, the outer wall of the arm body is coated with an antistatic coating.

[0012] Specifically, a dust-proof brush is provided on the inner wall of the arm body, and the dust-proof brush is provided on one side close to the end of the arm body.

[0013] Specifically, a dustproof clamping platform is provided on one side of the assembly ring facing the connecting portion, the dustproof clamping platform is located below the abutting clamping platform, and the radius of the dustproof clamping platform is greater than the radius of the abutting clamping platform.

[0014] The technical solution of the utility model is to arrange a mounting head at the end of the arm body, and then arrange an assembly part, a connecting part and an assembly ring at the assembly part of the mounting head, and the end of the assembly ring close to the assembly part is stopped and abutted against the arm body, and then the end of the assembly ring close to the connecting part is stopped and abutted against the power unit, so as to buffer and eliminate the vibration generated when the power unit is working, so as to avoid excessive vibration frequency from being transmitted through the arm body, so as to achieve the effect of vibration elimination, effectively avoid the influence of vibration on each power unit, and thus improve the service life of the mechanical arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 This is one of the schematic diagrams of the partially exploded state of the utility model.

[0017] Figure 3 This is the second schematic diagram of the partially exploded state of the utility model.

[0018] Figure 4 It is a cross-sectional view of the connection state of the utility model and the power unit.

[0019] The reference numerals include: 10, arm body; 11, first welding surface; 12, limiting groove; 13, dust-proof brush; 20, mounting head; 21, connecting portion; 211, second welding surface; 22, assembly portion; 221, shock-absorbing bump; 222, assembly hole; 23, assembly ring; 231, abutment clamp; 232, dust-proof clamp; 233, limiting surface; 24, through hole; 30, power unit. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figures 1 to 4 As shown, an improved universal robotic arm includes an arm body 10 and mounting heads 20 arranged at both ends of the arm body 10. The middle part of the arm body 10 is hollow to form a wire-passing channel. The mounting head 20 includes an assembly portion 22, a connecting portion 21, and an assembly ring 23 located between the assembly portion 22 and the connecting portion 21. The outer diameter of the assembly ring 23 is larger than the outer diameter of the assembly portion 22 and the outer diameter of the connecting portion 21. The end of the arm body 10 is plugged and fixed with the connecting portion 21, and the end of the assembly ring 23 close to the connecting portion 21 is used to stop and resist the arm body 10. The assembly portion 22 is used to plug and cooperate with an external power unit, and the end of the assembly ring 23 close to the assembly portion 22 is used to stop and resist the power unit. By arranging a mounting head 20 at the end of the arm body 10, and then arranging an assembly part 22, a connecting part 21 and an assembly ring 23 at the assembly part 22 of the mounting head 20, an end of the assembly ring 23 close to the assembly part 22 is stopped and abutted against the arm body 10, and an end of the assembly ring 23 close to the connecting part 21 is stopped and abutted against the power unit, so as to buffer and eliminate the vibration generated when the power unit is working, so as to avoid excessive vibration frequency from being transmitted through the arm body 10, so as to achieve the effect of vibration elimination, effectively avoid the influence of vibration on each power unit, and thus improve the service life of the robot arm.

[0022] A through hole 24 is provided in the middle of the mounting head 20, and the through hole 24 is connected to the wire passage, and a circular arc-shaped anti-scratch surface is formed on the inner side of the mounting head 20. In this embodiment, a through hole 24 is provided in the middle of the mounting head 20, so that the connecting wire of the robot arm can enter the wire passage through the through hole 24, so as to realize electrical connection between different power units 30 through the connecting wire. At the same time, a circular arc-shaped anti-scratch surface is provided on the inner side of the mounting head 20, so as to prevent the connecting wire from being scratched during use, thereby improving the stability of the robot arm when in use.

[0023] The arm body 10 is cylindrical, the connecting portion 21 is circular, the radius of the connecting portion 21 is smaller than the radius of the arm body 10, and the outer wall of the connecting portion 21 is in close contact with the inner wall of the cylinder. In this embodiment, the arm body 10 is cylindrical, and the dustproof effect in the arm body 10 is improved by the inner wall of the arm body 10 and the outer wall of the connecting portion 21 being in close contact.

[0024] An abutment clamping platform 231 is provided on one side of the assembly ring 23 facing the connection portion 21, and the end of the arm body 10 abuts against the abutment clamping platform 231. In this embodiment, an abutment clamping platform 231 is provided on one side of the assembly ring 23, and the abutment clamping platform 231 abuts against the end surface of the end of the arm body 10, thereby achieving abutment limiting, and at the same time improving the stability of the arm body 10 after being connected to the mounting head 20, and further improving the dustproof effect.

[0025] A limiting surface 233 is provided on one side of the assembly ring 23 facing the assembly portion 22. The limiting surface 233 is planar and is used to abut against the power unit 30. In this embodiment, the limiting surface 233 is provided on one side of the assembly ring 23, and the limiting surface 233 abuts against the power unit 30, thereby facilitating the connection between the mounting head 20 and the power unit 30 while improving the sealing, thereby further improving the dustproof effect of the robot arm.

[0026] The mounting head 20 is separately provided with the arm body 10, the inner wall of the arm body 10 is provided with a first welding surface 11, the outer wall of the connecting portion 21 is provided with a second welding surface 211, and the mounting head 20 and the arm body 10 are welded and fixed to each other through the first welding surface 11 and the second welding surface 211. In this embodiment, the first welding surface 11 is provided on the inner wall of the arm body 10, and the second welding surface 211 is provided on the outer wall of the connecting portion 21, and the first welding surface 11 and the second welding surface 211 are welded to each other to achieve a fixed connection between the mounting head 20 and the arm body 10, thereby improving the connection stability of the mounting head 20 and the arm body 10.

[0027] The end of the inner wall of the arm body 10 is provided with a limiting groove 12, and the first welding surface 11 is located in the limiting groove 12. In this embodiment, the limiting groove 12 is provided inside the arm body 10, and by arranging the first welding surface 11 in the limiting groove 12, it is convenient to limit the mounting head 20 while welding the mounting head 20, so as to avoid the connection portion 21 of the mounting head 20 being too long.

[0028] The outer wall of the arm body 10 is coated with an antistatic coating. In this embodiment, the outer wall of the arm body 10 is coated with an antistatic coating to improve the antistatic ability of the arm body 10 to meet the working requirements of the robot arm in a dusty environment.

[0029] The inner wall of the arm body 10 is provided with a dustproof brush 13, and the dustproof brush 13 is provided on one side close to the end of the arm body 10. In this embodiment, the dustproof brush 13 is provided on the inner wall of the arm body 10, and the dustproof brush 13 is located at the ends of both ends of the arm body 10. The dustproof brush 13 can be used to brush the connecting wire when the connecting wire is installed, and the dustproof effect of the robot arm is further improved by the dustproof brush 13 during use.

[0030] A dustproof clamping platform 232 is provided on one side of the assembly ring 23 facing the connecting portion 21. The dustproof clamping platform 232 is located below the abutting clamping platform 231. The radius of the dustproof clamping platform 232 is greater than the radius of the abutting clamping platform 231. In this embodiment, the dustproof clamping platform 232 is provided on one side of the assembly ring 23. By providing the dustproof clamping platform 232, the dustproof effect of the assembly ring 23 is improved, and at the same time, liquid can be prevented from flowing along the abutting clamping platform 231 to the dustproof clamping platform 232, thereby improving the waterproof and dustproof effect of the robot arm.

[0031] In addition, an easy-plug interface is reserved on the outer side of the arm body 10, through which auxiliary parts such as a locator or a CCD camera can be installed on the arm body 10, so as to expand the use requirements and usage methods of the robotic arm.

[0032] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. An improved universal mechanical arm, comprising an arm body (10) and mounting heads (20) arranged at both ends of the arm body (10), wherein the middle portion of the arm body (10) is hollow to form a wire-passing channel, the mounting head (20) comprises an assembly portion (22) and a connecting portion (21) and an assembly ring (23) located between the assembly portion (22) and the connecting portion (21), wherein the outer diameter of the assembly ring (23) is greater than the outer diameter of the assembly portion (22) and the outer diameter of the connecting portion (21); the end of the arm body (10) is plugged and fixed to the connecting portion (21), and one end of the assembly ring (23) close to the connecting portion (21) is used to stop and abut the arm body (10); the assembly portion (22) is used to plug and match with an external power unit, and one end of the assembly ring (23) close to the assembly portion (22) is used to stop and abut the power unit.

2. An improved universal mechanical arm according to claim 1, characterized in that: A through hole (24) is provided in the middle of the mounting head (20), the through hole (24) is connected to the wire passage, and an arc-shaped anti-scratch surface is formed on the inner side of the mounting head (20); a shock-absorbing protrusion (221) is provided at the end of the assembly portion (22), and an assembly hole (222) is provided on the end surface of the shock-absorbing protrusion (221), and the assembly hole (222) is used to connect with the power unit (30).

3. The improved universal mechanical arm according to claim 1, characterized in that: The arm body (10) is cylindrical, the connecting portion (21) is circular, the radius of the connecting portion (21) is smaller than the radius of the arm body (10), and the outer wall of the connecting portion (21) is in close contact with the inner wall of the cylinder.

4. The improved universal mechanical arm according to claim 1, characterized in that: A contact clamping platform (231) is provided on one side of the assembly ring (23) facing the connecting portion (21), and an end of the arm body (10) is in contact with the contact clamping platform (231).

5. The improved universal mechanical arm according to claim 1, characterized in that: A limiting surface (233) is provided on one side of the assembly ring (23) facing the assembly portion (22); the limiting surface (233) is planar and is used to abut against the power unit (30).

6. The improved universal mechanical arm according to claim 1, characterized in that: The mounting head (20) and the arm body (10) are arranged separately; the inner wall of the arm body (10) is provided with a first welding surface (11); the outer wall of the connecting portion (21) is provided with a second welding surface (211); the mounting head (20) and the arm body (10) are welded and fixed to each other through the first welding surface (11) and the second welding surface (211).

7. An improved universal mechanical arm according to claim 6, characterized in that: A limiting groove (12) is provided at the end of the inner wall of the arm body (10), and the first welding surface (11) is located in the limiting groove (12).

8. The improved universal mechanical arm according to claim 1, characterized in that: The outer wall of the arm body (10) is coated with an antistatic coating.

9. The improved universal mechanical arm according to claim 1, characterized in that: The inner wall of the arm body (10) is provided with a dustproof brush (13), and the dustproof brush (13) is arranged on one side close to the end of the arm body (10).

10. The improved universal mechanical arm according to claim 4, characterized in that: A dustproof clamping platform (232) is provided on one side of the assembly ring (23) facing the connecting portion (21); the dustproof clamping platform (232) is located below the abutting clamping platform (231); and the radius of the dustproof clamping platform (232) is greater than the radius of the abutting clamping platform (231).

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