Rotating seat device of welding robot

Abstract

The utility model belongs to the field of rotating seat devices, and particularly relates to a rotating seat device of a welding robot, which comprises a base, a rotating seat is mounted at the upper end of the base through a bearing, a driving mechanism is arranged in the base, an oil groove ring is fixedly connected to the outer side of the base, and an upper ring is fixedly connected to the lower end of the rotating seat. A lower ring is slidably connected to the upper portion of the inner wall of the oil groove ring, a plurality of evenly-distributed steel balls are arranged between the upper ring and the lower ring, and a supporting frame is fixedly connected to the lower end of the lower ring. Due to the fact that the oil groove ring, the spring, the oil conveying hole and other structures are additionally arranged on the base, the steel ball can be driven to roll in the rotating process of the rotating base, and the steel ball can drive the lower ring to vibrate in the rolling process. And in the vibration process of the lower ring, lubricating oil in the oil groove ring can be smeared on the outer sides of the steel balls through oil conveying holes through extrusion, and therefore lubricating is more convenient through rotation of the rotating base.

Description

Technical Field

[0001] This utility model relates to the technical field of rotating seat devices, specifically a rotating seat device for a welding robot. Background Technology

[0002] In the process of working, the main body of the welding robot needs to be installed on the top of the rotating seat device, and then the rotating seat device can drive the main body of the robot to rotate. According to the welding robot proposed in patent authorization announcement number: CN107020452B, this invention relates to a welding robot, including a turntable rotatably set on the base, a large arm hinged on the turntable with the hinge axis horizontal, a small arm hinged at the other end of the large arm with the hinge axis parallel to the hinge axis of the large arm, a support frame rotatably set at the other end of the small arm with the hinge axis perpendicular to the hinge axis of the small arm, a welding head set on the support frame, a welding wire delivery pipe set inside the welding head with the welding wire extending out of the pipe end, a cooling water channel set inside the welding head, the cooling water channel being connected to a cooling water source, and the cooling water channel running through the entire welding head;

[0003] However, in existing welding robots, the rotating seat is driven by a motor and gears. The robot's large mass results in significant inertia during rotation. This inertial force can easily act on the motor's output shaft, causing damage and shortening its lifespan. Furthermore, lubrication is difficult during rotation, increasing friction. Therefore, improvements to the existing technology are necessary. Utility Model Content

[0004] The purpose of this invention is to provide a rotating seat device for a welding robot, which solves the problems of motor damage caused by the robot's rotational inertia and the difficulty in lubricating the rotating seat.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rotating seat device for a welding robot, comprising a base, a rotating seat mounted on the upper end of the base via a bearing, a drive mechanism disposed inside the base, an oil groove ring fixedly connected to the outer side of the base, an upper ring fixedly connected to the lower end of the rotating seat, a lower ring slidably connected to the upper part of the inner wall of the oil groove ring, a plurality of evenly distributed steel balls disposed between the upper and lower rings, a support frame fixedly connected to the lower end of the lower ring, a connecting pin fixedly connected to the lower end of the support frame, a plurality of evenly distributed support bars fixedly connected to the lower middle part of the inner wall of the oil groove ring, and a spring disposed on the outer side of the connecting pin.

[0006] Preferably, the upper end of the rotating seat is fixedly connected with a plurality of evenly distributed mounting screws, and a support frame is provided on the outer side of the plurality of steel balls. The rotating seat can be connected to the welding robot through the mounting screws.

[0007] Preferably, a filling pipe is fixedly connected to the outer left side of the oil groove ring, and an end cap is threaded to the upper end of the filling pipe, so that lubricating oil can be added to the inside of the oil groove ring through the filling pipe.

[0008] Preferably, the lower ring has multiple evenly distributed oil supply holes inside, the support frame is slidably connected to the oil groove ring, the connecting pin is slidably connected to the support bar, and the oil supply holes can supply lubricating oil to the steel balls through the vibration of the lower ring.

[0009] Preferably, one end of the spring is fixedly connected to the support bar, and the other end of the spring is fixedly connected to the support frame. The spring can support the support frame through its elastic force.

[0010] Preferably, the drive mechanism includes a connecting shaft, which is mounted inside the base via bearings. A worm gear is fixedly connected to the lower outer side of the connecting shaft. Two symmetrically distributed mounting brackets are fixedly connected to the bottom inner side of the base. A worm is mounted between the two mounting brackets via bearings. A large gear is fixedly connected to the outer side of the worm. A motor is fixedly mounted to the bottom inner side of the base. A small gear is fixedly connected to the outer side of the motor's output shaft. The worm and worm gear have self-locking properties.

[0011] Preferably, the connecting shaft is fixedly connected to the rotating seat, the pinion meshes with the large gear, and the worm meshes with the worm wheel. The diameter of the pinion is smaller than the diameter of the large gear, which can improve the rotational accuracy of the worm.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model adds an oil groove ring, a spring, and an oil supply hole to the base. During the rotation of the rotating seat, the steel ball can be driven to roll. During the rolling of the steel ball, the lower ring can be driven to vibrate. During the vibration, the lower ring can squeeze the lubricating oil inside the oil groove ring to the outside of the steel ball through the oil supply hole, thereby making the rotation of the rotating seat more convenient for lubrication.

[0014] 2. This utility model, by adding a worm, worm wheel, and connecting shaft inside the base, allows the motor to drive the gear set to rotate, and the gear set to drive the worm to rotate. During the rotation of the worm, the worm can drive the rotating seat to rotate through the meshing with the worm wheel, and the worm wheel cannot drive the worm to rotate. Thus, the self-locking property between the worm wheel and the worm protects the motor. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 For the present utility model Figure 1 Stereoscopic section Figure 1 ;

[0017] Figure 3 For the present utility model Figure 1 Stereoscopic section Figure 2 ;

[0018] Figure 4 For the present utility model Figure 2 Enlarged view of the A-section structure;

[0019] Figure 5 For the present utility model Figure 4 A three-dimensional diagram of the lower ring.

[0020] In the diagram: 1. Base; 2. Rotary seat; 3. Drive mechanism; 4. Mounting screw; 5. Oil groove ring; 6. Oil filling pipe; 7. End cap; 8. Upper ring; 9. Steel ball; 10. Support frame; 11. Lower ring; 12. Support frame; 13. Connecting pin; 14. Support bar; 15. Spring; 16. Oil inlet hole; 31. Connecting shaft; 32. Worm gear; 33. Mounting frame; 34. Worm; 35. Large gear; 36. Motor; 37. Small gear. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5A rotating seat device for a welding robot includes a base 1, a rotating seat 2 mounted on the upper end of the base 1 via a bearing, a drive mechanism 3 inside the base 1, an oil groove ring 5 fixedly connected to the outer side of the base 1, an upper ring 8 fixedly connected to the lower end of the rotating seat 2, a lower ring 11 slidably connected to the upper part of the inner wall of the oil groove ring 5, a plurality of evenly distributed steel balls 9 arranged between the upper ring 8 and the lower ring 11, a support frame 12 fixedly connected to the lower end of the lower ring 11, a connecting pin 13 fixedly connected to the lower end of the support frame 12, a plurality of evenly distributed support bars 14 fixedly connected to the lower middle part of the inner wall of the oil groove ring 5, and a spring 15 arranged on the outer side of the connecting pin 13.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The upper end of the rotating seat 2 is fixedly connected with multiple evenly distributed mounting screws 4. The outer sides of multiple steel balls 9 are jointly provided with a support frame 10. The rotating seat 2 can be connected to the welding robot through the mounting screws 4. The outer left side of the oil groove ring 5 is fixedly connected with a filling pipe 6. The upper end of the filling pipe 6 is connected with an end cap 7 through a thread. Lubricating oil can be added to the inside of the oil groove ring 5 through the filling pipe 6. The lower ring 11 has multiple evenly distributed oil supply holes 16 inside. The support frame 12 is slidably connected to the oil groove ring 5. The connecting pin 13 is slidably connected to the support bar 14. The oil supply holes 16 can supply lubricating oil to the steel balls 9 through the vibration of the lower ring 11. One end of the spring 15 is fixedly connected to the support bar 14, and the other end of the spring 15 is fixedly connected to the support frame 12. The spring 15 can support the support frame 12 through its elasticity.

[0024] Please see Figure 1 , Figure 2 , Figure 3 The drive mechanism 3 includes a connecting shaft 31. The connecting shaft 31 is mounted inside the base 1 via bearings. A worm gear 32 is fixedly connected to the lower outer side of the connecting shaft 31. Two symmetrically distributed mounting brackets 33 are fixedly connected to the bottom inner side of the base 1. A worm 34 is mounted between the two mounting brackets 33 via bearings. A large gear 35 is fixedly connected to the outer side of the worm 34. A motor 36 is fixedly mounted to the bottom inner side of the base 1. A small gear 37 is fixedly connected to the outer side of the output shaft of the motor 36. The worm 34 and the worm gear 32 are self-locking. The connecting shaft 31 is fixedly connected to the rotating seat 2. The small gear 37 meshes with the large gear 35, and the worm 34 meshes with the worm gear 32. The diameter of the small gear 37 is smaller than the diameter of the large gear 35, which can improve the rotational accuracy of the worm 34.

[0025] The specific implementation process of this utility model is as follows: When in use, open the end cover 7, and then add lubricating oil into the oil groove ring 5 through the oil filling pipe 6. After the oil filling is completed, tighten the end cover 7. After tightening, start the motor 36. The motor 36 drives the small gear 37 to rotate. The small gear 37 drives the worm 34 to rotate through the large gear 35. During the rotation, the worm 34 drives the connecting shaft 31 to rotate through the meshing with the worm wheel 32. During the rotation, the connecting shaft 31 can drive the rotating seat 2 to rotate. During the rotation of the rotating seat 2, the welding robot installed above can rotate. When the rotation is completed and needs to be stopped, the motor 36 stops rotating. At the same time, the inertia generated by the robot cannot drive the connecting shaft 31 and the worm wheel 32 to rotate, thereby effectively avoiding damage to the motor 36.

[0026] During the rotation of the rotating seat 2, the upper ring 8 drives the steel ball 9 to roll. During the rolling process, the steel ball 9 will drive the lower ring 11 to vibrate. During the vibration of the lower ring 11, the vibration is amplified by the spring 15. During the vibration, the lower ring 11 can make the lubricating oil inside the oil groove ring 5 flow to the outside of the steel ball 9 through the oil supply hole 16, so as to facilitate the lubrication of the steel ball 9.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotating seat device for a welding robot, comprising a base (1), characterized in that: A rotating seat (2) is mounted on the upper end of the base (1) via a bearing. A drive mechanism (3) is provided inside the base (1). An oil groove ring (5) is fixedly connected to the outer side of the base (1). An upper ring (8) is fixedly connected to the lower end of the rotating seat (2). A lower ring (11) is slidably connected to the upper part of the inner wall of the oil groove ring (5). A plurality of evenly distributed steel balls (9) are arranged between the upper ring (8) and the lower ring (11). A support frame (12) is fixedly connected to the lower end of the lower ring (11). A connecting nail (13) is fixedly connected to the lower end of the support frame (12). A plurality of evenly distributed support bars (14) are fixedly connected to the lower part of the inner wall of the oil groove ring (5). A spring (15) is provided on the outer side of the connecting nail (13).

2. The rotating seat device for a welding robot according to claim 1, characterized in that: The upper end of the rotating seat (2) is fixedly connected with a plurality of evenly distributed mounting screws (4), and a support frame (10) is provided on the outer side of the plurality of steel balls (9).

3. The rotating seat device for a welding robot according to claim 1, characterized in that: The oil tank ring (5) is fixedly connected to the left side of the outer side with an oil filling pipe (6), and the upper end of the oil filling pipe (6) is connected to an end cap (7) by a thread.

4. The rotating seat device for a welding robot according to claim 1, characterized in that: The lower ring (11) has multiple evenly distributed oil delivery holes (16) inside. The support frame (12) is slidably connected to the oil groove ring (5), and the connecting pin (13) is slidably connected to the support bar (14).

5. The rotating seat device for a welding robot according to claim 1, characterized in that: One end of the spring (15) is fixedly connected to the support bar (14), and the other end of the spring (15) is fixedly connected to the support frame (12).

6. The rotating seat device for a welding robot according to claim 1, characterized in that: The drive mechanism (3) includes a connecting shaft (31). The connecting shaft (31) is installed inside the base (1) via a bearing. A worm gear (32) is fixedly connected to the lower outer side of the connecting shaft (31). Two symmetrically distributed mounting brackets (33) are fixedly connected to the bottom inner side of the base (1). A worm (34) is installed between the two mounting brackets (33) via a bearing. A large gear (35) is fixedly connected to the outer side of the worm (34). A motor (36) is fixedly installed at the bottom inner side of the base (1). A small gear (37) is fixedly connected to the outer side of the output shaft of the motor (36).

7. The rotating seat device for a welding robot according to claim 6, characterized in that: The connecting shaft (31) is fixedly connected to the rotating seat (2), the small gear (37) meshes with the large gear (35), and the worm (34) meshes with the worm wheel (32).

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