Rotary joint of industrial robot

Abstract

The utility model relates to the technical field of industrial robots, and solves the problems that rotating joints of the industrial robot are realized through gear meshing between two joints, the gear is abraded after being used, the meshing precision of the two joints is influenced, the longer the work is, the more serious the abrasion is, and the greater the influence on the precision is. The rotating joint of the industrial robot comprises a positioning cylinder, a driving motor is arranged in the positioning cylinder, a telescopic rotating rod is fixedly installed at the output end of the driving motor, a positioning plate is fixedly installed on the surface of the rotating rod, and an extrusion assembly is arranged on the surface of the positioning plate. Two meshed gears are arranged at one end of the rotating rod, the extrusion assembly comprises a telescopic rod fixedly installed on the surface of the positioning plate, a stopping block is fixedly installed at one end of the telescopic rod, a spring is fixedly installed at the bottom of the stopping block, and the bottom of the spring is connected with the surface of the positioning plate.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial robots, in particular to a rotary joint of an industrial robot. Background Art

[0002] The disclosure number CN213165451U discloses a rotary joint of an industrial robot, which includes an active device and a driven device. A circular groove is provided inside the active device, and a fixed disk is fixedly connected to the right end of the active device. A latch is fixedly connected to one side of the fixed disk, and the latch runs through the fixed disk and the active device. An axial hole is provided on one side of the fixed disk, and a driving shaft is inserted in the axial hole. A driving gear is fixedly connected to the end of the driving shaft away from the fixed disk. When in use, the driving shaft is driven to rotate with the rotation of the motor, and the rotation of the driving shaft causes the bearing inside the active device to start rotating. Since there are steel balls in the bearing grooves on the bearing surface, the steel balls are used to rotate on the inner wall of the circular groove to realize the overall work. The rotation of the active shaft drives the driving gear to start rotating, and the rotation of the driving gear drives the driven gear to start rotating, and then drives the driven shaft of the driven device to transmit the power.

[0003] It simplifies the internal device to achieve the same effect and reduce maintenance costs.

[0004] However, the rotation joints of industrial robots are achieved through the meshing of gears between the two joints. The gears wear out after use, which affects the meshing accuracy of the two joints. The longer they work, the more severe the wear, and the greater the impact on the accuracy. The rotation joint accuracy of this solution is poor. Utility Model Content

[0005] In order to address the deficiencies in the prior art, the utility model provides a rotating joint of an industrial robot, which solves the problem that the rotating joints of industrial robots are all achieved by meshing of gears between two joints, and the gears wear out after use, which affects the meshing accuracy of the two joints. The longer the work lasts, the more serious the wear becomes, and the greater the impact on the accuracy becomes.

[0006] To achieve the above object, the utility model provides the following technical solution: a rotary joint of an industrial robot, comprising a positioning cylinder, a driving motor is arranged inside the positioning cylinder, a retractable rotating rod is fixedly installed on the output end of the driving motor, a positioning plate is fixedly installed on the surface of the rotating rod, an extrusion assembly is arranged on the surface of the positioning plate, and two meshing gears are arranged at one end of the rotating rod;

[0007] The extrusion assembly comprises a telescopic rod fixedly mounted on the surface of the positioning plate, a stop block fixedly mounted on one end of the telescopic rod, a spring fixedly mounted on the bottom of the stop block, and the bottom of the spring is connected to the surface of the positioning plate.

[0008] In a specific embodiment, a sealing cover is fixedly mounted on the surface of the positioning cylinder, and a through groove having a size matching that of the output end of the driving motor is opened on the surface of the sealing cover.

[0009] In a specific embodiment, a mounting plate is fixedly mounted on the back of the positioning tube, and positioning bolts for fixing are provided on both sides of the surface of the mounting plate.

[0010] In a specific embodiment, a guide groove is provided in the middle of the surface of the stop block, the size of the guide groove is matched with the size of the rotating rod, and the rotating rod passes through the stop block.

[0011] In a specific embodiment, the diameter of the blocking block is larger than the diameter of one end of the telescopic rod, and the diameter of the spring is smaller than the diameter of the blocking block.

[0012] In a specific embodiment, a sliding groove is provided inside the rotating rod, a clamping rod is slidably connected inside the sliding groove, and a gear is fixedly mounted on one end of the clamping rod.

[0013] Compared with the prior art, the utility model provides a rotary joint of an industrial robot, which has the following beneficial effects:

[0014] In the technical solution disclosed by the utility model, the rotating rod, the positioning plate and the extrusion assembly are used in coordination. When the gear is rotating, the spring will drive the stop block to push one of the gears, so that the two gears are meshed more closely, reducing the occurrence of reduced accuracy due to wear of the gears and increasing the service life of the gears.

[0015] Through the setting of the extrusion assembly provided by the utility model, during use, the personnel install the telescopic rod on the surface of the positioning plate, and when the rotating rod rotates, it will drive the positioning plate to rotate. The telescopic rod will push the stop block due to the automatic reset characteristic of the spring, and the stop block will push the gear. When the gear is pushed, it will move forward and mesh more closely with another gear, thereby improving the accuracy of the gear transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0019] Figure 3This is a schematic diagram of the positioning cylinder structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the extrusion component of the utility model.

[0021] In the figure: 1. positioning cylinder; 2. driving motor; 3. rotating rod; 4. positioning plate; 5. extrusion assembly; 51. telescopic rod; 52. stop block; 53. spring; 6. gear; 7. sealing cover; 8. mounting plate. DETAILED DESCRIPTION

[0022] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0023] Figure 1-Figure 4 An embodiment of the utility model is a rotary joint of an industrial robot, comprising a positioning cylinder 1, a driving motor 2 is provided inside the positioning cylinder 1, a retractable rotating rod 3 is fixedly installed on the output end of the driving motor 2, a positioning plate 4 is fixedly installed on the surface of the rotating rod 3, an extrusion assembly 5 is provided on the surface of the positioning plate 4, and two meshing gears 6 are provided at one end of the rotating rod 3.

[0024] The specific problem addressed by this specific embodiment is to solve the problem that the rotation joints of industrial robots are all realized by the meshing of the gears 6 between the two joints, and the gears 6 are worn after use, which affects the meshing accuracy of the two joints. The longer the work, the more serious the wear, and the greater the impact on the accuracy. The utility model uses the coordinated use of the rotating rod 3, the positioning plate 4 and the extrusion assembly 5. During the rotation of the gear 6, the spring 53 will drive the blocking block 52 to push one of the gears 6, so that the two gears 6 are meshed more closely, reducing the occurrence of the reduction in accuracy of the gear 6 due to wear, and increasing the service life of the gear 6.

[0025] The extrusion assembly 5 includes a telescopic rod 51 fixedly mounted on the surface of the positioning plate 4, one end of the telescopic rod 51 is fixedly mounted with a stop block 52, the bottom of the stop block 52 is fixedly mounted with a spring 53, the bottom of the spring 53 is connected to the surface of the positioning plate 4, a guide groove is opened in the middle of the surface of the stop block 52, the size of the guide groove is adapted to the size of the rotating rod 3, the rotating rod 3 passes through the stop block 52, the diameter of the stop block 52 is larger than the diameter of one end of the telescopic rod 51, and the diameter of the spring 53 is smaller than the diameter of the stop block 52. In this specific embodiment, during use, personnel install the telescopic rod 51 on the surface of the positioning plate 4. When the rotating rod 3 rotates, the positioning plate 4 will be driven to rotate. The telescopic rod 51 will push the stop block 52 due to the automatic reset characteristic of the spring 53, and the stop block 52 pushes the gear 6. When the gear 6 is pushed, it will move forward and mesh more closely with another gear 6, thereby improving the transmission accuracy of the gear 6.

[0026] In this specific embodiment, a sealing cover 7 is fixedly installed on the surface of the positioning cylinder 1, and a through groove of a size matching the output end of the driving motor 2 is opened on the surface of the sealing cover 7. A mounting plate 8 is fixedly installed on the back of the positioning cylinder 1, and positioning bolts for fixing are provided on both sides of the surface of the mounting plate 8. A sliding groove is opened inside the rotating rod 3, and a clamping rod is slidably connected inside the sliding groove, and a gear 6 is fixedly installed on one end of the clamping rod.

[0027] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0028] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary joint of an industrial robot, comprising a positioning cylinder (1), characterized in that: A driving motor (2) is provided inside the positioning cylinder (1); a retractable rotating rod (3) is fixedly mounted on the output end of the driving motor (2); a positioning plate (4) is fixedly mounted on the surface of the rotating rod (3); a pressing assembly (5) is provided on the surface of the positioning plate (4); and two meshing gears (6) are provided at one end of the rotating rod (3); The extrusion assembly (5) comprises a telescopic rod (51) fixedly mounted on the surface of the positioning plate (4); a stop block (52) is fixedly mounted on one end of the telescopic rod (51); a spring (53) is fixedly mounted on the bottom of the stop block (52); and the bottom of the spring (53) is connected to the surface of the positioning plate (4).

2. The rotary joint of an industrial robot according to claim 1, characterized in that: A sealing cover (7) is fixedly mounted on the surface of the positioning cylinder (1), and a through groove having a size matching that of the output end of the driving motor (2) is provided on the surface of the sealing cover (7).

3. The rotary joint of an industrial robot according to claim 1, characterized in that: A mounting plate (8) is fixedly mounted on the back of the positioning cylinder (1), and positioning bolts for fixing are provided on both sides of the surface of the mounting plate (8).

4. The rotary joint of an industrial robot according to claim 1, characterized in that: A guide groove is provided in the middle of the surface of the stop block (52), the size of the guide groove matches the size of the rotating rod (3), and the rotating rod (3) passes through the stop block (52).

5. The rotary joint of an industrial robot according to claim 1, characterized in that: The diameter of the blocking block (52) is larger than the diameter of one end of the telescopic rod (51), and the diameter of the spring (53) is smaller than the diameter of the blocking block (52).

6. The rotary joint of an industrial robot according to claim 1, characterized in that: A sliding groove is provided inside the rotating rod (3), a clamping rod is slidably connected inside the sliding groove, and a gear (6) is fixedly mounted on one end of the clamping rod.

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