Rotary joint of industrial robot

Abstract

The utility model provides a rotational joint of industrial robot, including driving box, rotating shaft, rotating seat and locating seat, the both sides of one end of driving box are welded and fixed with arc-shaped driving plate, the both ends of one side of rotating seat are welded and fixed with arc-shaped rotating plate, the driving box is rotatingly connected with the arc-shaped rotating plate on the rotating seat through the arc-shaped driving plate, and the rotating shaft is rotatably connected with the locating seat through the arc-shaped rotating plate. One end of the bottom of the rotating shaft is fixedly mounted on the arc-shaped rotating plate, a first bevel gear is fixedly mounted between the rotating shaft and the arc-shaped rotating plate, positioning seats are fixedly mounted at the centers of one sides of the driving box and the rotating seat, and a plurality of cable holes are uniformly formed in one side of the bottom of each positioning seat. A rotating shaft on a first bevel gear drives an arc-shaped rotating plate on an arc-shaped driving plate to drive the arc-shaped rotating plate to rotate, a bearing rotating structure is stable, stable rotating connection is achieved through meshing between the bevel gears, after a cable penetrates through, compression reset is achieved through a telescopic spring, so that the cable in a cable hole is supported and fixed through an arc-shaped pressing plate, and safety is greatly improved.

Description

Technical Field

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

[0002] As an irreplaceable important equipment and means in advanced manufacturing, industrial robots have become an important symbol to measure a country's manufacturing and technological levels. Robots have basic characteristics such as perception, decision-making, and execution. They can assist or even replace humans to complete dangerous, heavy, and complex tasks, improve work efficiency and quality, serve human life, and expand or extend the scope of human activities and capabilities.

[0003] In modern industrial production, the working accuracy of industrial robots is required to be relatively high. When the joints of industrial robots rotate, they are bound to wear. After the wear occurs, the accuracy of the meshing of the two joints is affected. The longer the work, the more serious the wear, thus affecting its working accuracy. In addition, the interior of the robot is full of wires, and the wires are exposed to the outside and are easily damaged by bumps, squeezing, and causing the robot to malfunction. In this regard, this plan specially proposes a rotating joint of an industrial robot to solve the above problems. Utility Model Content

[0004] In order to overcome the defects of the prior art, the utility model provides a rotary joint of an industrial robot.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is implemented as follows: a rotating joint of an industrial robot comprises a driving box, a rotating shaft, a rotating seat and a positioning seat, wherein an arc-shaped driving plate is welded and fixed on both sides of one end of the driving box, and an arc-shaped rotating plate is welded and fixed on both ends of one side of the rotating seat, the driving box is rotatably connected with the arc-shaped rotating plate on the rotating seat through the arc-shaped driving plate, bearings are fixedly installed at the center of the arc-shaped rotating plate by bolts, the rotating shaft is fixedly installed at the center between the bearings, and one end of the bottom of the rotating shaft is fixedly installed on the arc-shaped rotating plate, and the rotating shaft is fixedly installed on the arc-shaped rotating plate. A first bevel gear is fixedly installed between the moving plates, the positioning seat is fixedly installed at the center of one side of the driving box and the rotating seat by bolts, a plurality of cable holes are evenly opened on one side of the bottom of the positioning seat, a positioning cavity is opened in the positioning seat on one side of the cable hole, a plurality of telescopic springs are evenly installed on the positioning seat at the center of one side of the positioning cavity, a positioning plate movable in the positioning cavity is fixedly installed between the top ends of the telescopic springs by bolts, a plurality of positioning rods matching the cable holes are evenly installed at the center of the other side of the positioning plate, and one end of the top of the positioning rod extends through and into the cable hole.

[0006] Preferably, a motor is provided in the drive box, one side of the first bevel gear is meshedly connected with a second bevel gear, and the center of one side of the second bevel gear is connected to an output end of the motor in the drive box via a rotating shaft.

[0007] Preferably, the rotating shaft extends through the bearing into the driving box, and the bearing is fixedly installed at the center of one side of the driving box by bolts.

[0008] Preferably, the top end of the positioning rod is located in the cable hole and is fixed with an arc-shaped wire pressing plate by bolts, and the width of the arc-shaped wire pressing plate matches the cable hole.

[0009] Preferably, a non-slip pad made of rubber is bonded and fixed to one side of the top of the arc-shaped wire pressing plate.

[0010] Preferably, a T-shaped pull ring is fixedly installed on the positioning plate at the center of one side close to the telescopic spring by bolts, and the T-shaped pull ring movably passes through a positioning hole provided at the center of the positioning seat.

[0011] Preferably, a plurality of movable holes matching the size of the positioning rod are evenly opened on the positioning seat between the cable hole and the positioning cavity, and the positioning rods are movably inserted through the movable holes.

[0012] The beneficial effects of the utility model are embodied in:

[0013] The utility model drives the rotating shaft on the bearing to rotate stably through the motor in the driving box, and the second bevel gear on the rotating shaft rotates synchronously with the meshing rotation to drive the first bevel gear to rotate, and the rotating shaft on the first bevel gear drives the arc rotating plate to drive and rotate on the arc driving plate. The bearing rotation structure is stable, and the meshing between the bevel gears realizes stable rotation connection. The structure is simple and the operation is stable. The cable at the rotating connection passes through the cable hole to be compressed and fixed to avoid cable damage. The T-shaped pull ring is used in the positioning hole to drive the positioning plate to compress the telescopic spring, and the positioning rod on the positioning plate drives the arc clamping plate to contract. After the cable passes through, the telescopic spring is compressed and reset so that the arc clamping plate supports and fixes the cable in the cable hole. The operation is simple, and the cable guide damage caused by external extrusion is effectively avoided, thereby greatly improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In the attached picture:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the rotating shaft connection structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the positioning seat structure of the utility model;

[0018] Figure 4 It is a schematic side view of the internal structure of the positioning seat of the utility model;

[0019] Figure 5 for Figure 4 A schematic enlarged diagram of the structure in the middle.

[0020] Description of reference numerals:

[0021] 1. Drive box; 11. Arc-shaped drive plate; 12. Rotating shaft; 2. Rotating shaft; 21. First bevel gear; 22. Second bevel gear; 3. Rotating seat; 31. Arc-shaped rotating plate; 4. Positioning seat; 40. Positioning hole; 41. Cable hole; 42. Positioning cavity; 43. Telescopic spring; 44. Positioning plate; 45. Positioning rod; 46. Arc-shaped wire pressing plate; 47. Anti-slip pad; 48. T-shaped pull ring; 49. Positioning hole; 5. Bearing. DETAILED DESCRIPTION

[0022] The utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in 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.

[0023] It should be noted that if the utility model embodiments involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, "multiple" means more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0025] Example: Figure 1 — Figure 5As shown: it includes a driving box 1, a rotating shaft 2, a rotating seat 3 and a positioning seat 4, an arc-shaped driving plate 11 is welded and fixed on both sides of one end of the driving box 1, and an arc-shaped rotating plate 31 is welded and fixed on both ends of one side of the rotating seat 3. The driving box 1 is rotatably connected with the arc-shaped rotating plate 31 on the rotating seat 3 through the arc-shaped driving plate 11, and the arc-shaped driving plate and the arc-shaped rotating plate are connected through the rotating shaft, and the center of the arc-shaped rotating plate 31 is fixedly installed with a bearing 5, and the center between the bearings 5 ​​is fixedly installed with a rotating shaft 2, and stable rotation is achieved by using the bearing, and one end of the bottom of the rotating shaft 2 is fixedly installed on the arc-shaped rotating plate 31, and the rotating shaft 2 is fixedly installed between the arc-shaped rotating plates 31. There is a first bevel gear 21, and a positioning seat 4 is fixedly installed at the center of one side of the driving box 1 and the rotating seat 3. The cable holes 41 opened on the positioning seat 4 are used to position and support the peripheral cables. A plurality of telescopic springs 43 are evenly installed at the center of one side of the positioning cavity 42 on the positioning seat 4. The telescopic springs are used to compress the cables. A positioning plate 44 movable in the positioning cavity 42 is fixedly installed between the top ends of the telescopic springs 43. A plurality of positioning rods 45 that match the cable holes 41 are evenly installed at the center of the other side of the positioning plate 44. The top end of the positioning rod 45 extends through the cable hole 41 to achieve compression and fixation of the cables to avoid damage to the rotating traction cables.

[0026] See also Figure 1 and Figure 2 A motor is provided in the drive box 1, and a second bevel gear 22 is meshedly connected to one side of the first bevel gear 21. The center of one side of the second bevel gear 22 is connected to the motor output end in the drive box 1 through a rotating shaft 12. The rotating shaft 12 extends through the drive box 1 through a bearing 5. The bearing 5 is fixedly installed at the center of one side of the drive box 1, so that the rotating joint structure is simple and stable, and the rotation of the bevel gear is more stable.

[0027] See also Figure 3 , Figure 4 and Figure 5 The top of the positioning rod 45 is located in the cable hole 41 and is fixedly installed with an arc-shaped pressing plate 46. The width of the arc-shaped pressing plate 46 matches the cable hole 41, which provides a stable pressing effect on the cable. The top side of the arc-shaped pressing plate 46 is bonded with an anti-slip pad 47 to increase the friction performance between the cable and the cable. A T-shaped pull ring 48 is fixedly installed on the positioning plate 44 at the center of one side close to the telescopic spring 43. The T-shaped pull ring is used to tighten or loosen the cable. A number of movable holes 40 that match the size of the positioning rod 45 are evenly opened on the positioning seat 4 between the cable hole 41 and the positioning cavity 42. The positioning rods 45 are all movable and penetrate the movable holes 40, which are connected through and have a stable structure.

[0028] When in use, the motor in the drive box drives the rotating shaft on the bearing to rotate stably, and the second bevel gear on the rotating shaft rotates synchronously and meshes to drive the first bevel gear to rotate. The rotating shaft on the first bevel gear drives the arc rotating plate to drive and rotate on the arc driving plate. The bearing rotation structure is stable, and a stable rotation connection is achieved through the meshing of the bevel gears. The structure is simple and the operation is stable. The cables at the rotating connection are passed through the cable holes for compression and fixation to avoid cable damage. The T-shaped pull ring is used in the positioning hole to drive the positioning plate to compress the telescopic spring, and the positioning rod on the positioning plate drives the arc clamping plate to contract. After the cable is passed through, the telescopic spring is compressed and reset so that the arc clamping plate supports and fixes the cable in the cable hole. The operation is simple, and the cable guide damage caused by external extrusion is effectively avoided, thereby greatly improving safety.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary joint of an industrial robot, comprising a drive box (1), a rotary shaft (2), a rotary seat (3) and a positioning seat (4), characterized in that: An arc-shaped driving plate (11) is welded and fixed on both sides of one end of the driving box (1), and an arc-shaped rotating plate (31) is welded and fixed on both ends of one side of the rotating seat (3). The driving box (1) is rotatably connected to the arc-shaped rotating plate (31) on the rotating seat (3) through the arc-shaped driving plate (11). A bearing (5) is fixedly installed at the center of each arc-shaped rotating plate (31) by bolts. The rotating shaft (2) is fixedly installed at the center between the bearings (5), and one end of the bottom of the rotating shaft (2) is fixedly installed on the arc-shaped rotating plate (31). A first bevel gear (21) is fixedly installed on the rotating shaft (2) between the arc-shaped rotating plates (31). The positioning seat (4) is fixedly installed at the center of each side by bolts, a plurality of cable holes (41) are evenly opened on one side of the bottom of the positioning seat (4), a positioning cavity (42) is opened in the positioning seat (4) on one side of the cable hole (41), a plurality of telescopic springs (43) are evenly installed on the positioning seat (4) at the center of one side of the positioning cavity (42), a positioning plate (44) movable in the positioning cavity (42) is fixedly installed between the top ends of the telescopic springs (43) by bolts, and a plurality of positioning rods (45) matching the cable holes (41) are evenly installed at the center of the other side of the positioning plate (44), and one end of the top of the positioning rod (45) extends through the cable hole (41).

2. The rotary joint of an industrial robot according to claim 1, characterized in that: A motor is arranged in the drive box (1); one side of the first bevel gear (21) is meshedly connected to a second bevel gear (22); the center of one side of the second bevel gear (22) is connected to an output end of the motor in the drive box (1) via a rotating shaft (12).

3. The rotary joint of an industrial robot according to claim 1, characterized in that: The rotating shaft (12) extends through the bearing (5) into the drive box (1), and the bearing (5) is fixedly mounted at the center of one side of the drive box (1) by means of bolts.

4. The rotary joint of an industrial robot according to claim 1, characterized in that: The top end of the positioning rod (45) is located in the cable hole (41) and is fixedly mounted with an arc-shaped wire pressing plate (46) by means of bolts. The width of the arc-shaped wire pressing plate (46) matches that of the cable hole (41).

5. The rotary joint of an industrial robot according to claim 4, characterized in that: A rubber anti-skid pad (47) is bonded and fixed to one side of the top of the arc-shaped wire pressing plate (46).

6. The rotary joint of an industrial robot according to claim 1, characterized in that: A T-shaped pull ring (48) is fixedly mounted on the positioning plate (44) at the center of one side close to the telescopic spring (43) by means of bolts, and the T-shaped pull ring (48) movably penetrates a positioning hole (49) provided at the center of the positioning seat (4).

7. The rotary joint of an industrial robot according to claim 1, characterized in that: A plurality of movable holes (40) having a size matching that of the positioning rod (45) are evenly arranged on the positioning seat (4) between the cable hole (41) and the positioning cavity (42), and the positioning rod (45) is movably inserted into the movable holes (40).

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