Industrial robot waist section bearing with flange

Abstract

The utility model discloses a kind of industrial robot waist part bearing with flange, belong to industrial robot technical field, including the recess formed by inner ring, outer ring is set with the sponge piece of absorbing and storing lubricating oil in recess, and rubber sheet is covered in recess opening place and plays the sealing effect;Scheme is also fixedly connected with fixed mechanism on inner ring side wall, fixed mechanism is made of extension block, cylinder, upper fixed shell and lower fixed shell, and the quick clamping fixation of external equipment is realized by cylinder drive upper fixed shell and lower fixed shell.The utility model passes through built-in lubricating sealing structure, effectively solve the problem that lubricating oil is easily lost and lubrication is insufficient, reach the effect of prolonging bearing life;Through the fixed mechanism of pneumatic clamping, the problem that traditional installation mode is complicated and time-consuming is solved, and the efficiency of assembly and maintenance is significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of industrial robot technology, and in particular to a flanged bearing for the waist section of an industrial robot. Background Technology

[0002] As a core piece of equipment in automated production, the flexibility and reliability of the joints of industrial robots are of paramount importance. The waist section, as the key hub connecting the robot base and the upper arm, usually uses a large slewing bearing with flanges to withstand huge loads and achieve a wide range of rotational movements.

[0003] In actual operation, sufficient and continuous lubrication is essential to ensure that such bearings can work smoothly and accurately for a long time. Existing bearing lubrication methods mostly rely on periodically injecting grease or lubricating oil. However, during the high-speed rotation or long-term reciprocating motion of the robot, the lubricant is prone to leakage or splashing out due to centrifugal force or poor sealing. This not only contaminates the equipment and working environment, but also causes dry friction in the bearing raceway and steel balls due to insufficient lubrication, thereby aggravating wear and reducing the motion accuracy and service life of the bearing.

[0004] In addition, the installation process of such large flange bearings directly affects the production and maintenance efficiency of robots. Traditionally, flanges are fixedly connected to the robot base or body by a large number of bolts. On mass production assembly lines or in scenarios where on-site maintenance and replacement are required, the process of tightening each bolt one by one and ensuring that each bolt reaches the predetermined torque is very cumbersome, consumes a lot of manpower and time, and becomes a bottleneck affecting the overall assembly efficiency.

[0005] Therefore, this utility model proposes a flanged bearing for the waist section of an industrial robot to address the shortcomings of existing technologies. Utility Model Content

[0006] In view of the problems existing in the bearings of the waist part of flanged industrial robots, such as easy loss of lubricating oil leading to insufficient lubrication and accelerated wear, as well as cumbersome and inefficient installation process, this utility model aims to provide a flanged bearing for the waist part of industrial robots with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a flanged bearing for the waist section of an industrial robot, comprising: an inner ring, an outer ring, steel balls, a groove, and a flange; as well as a sponge sheet, a rubber sheet, and a fixing mechanism.

[0008] The groove has a sponge sheet inside and a rubber sheet covering the opening side of the groove; the fixing mechanism includes an extension block, a cylinder, an upper fixing shell, and a lower fixing shell.

[0009] Furthermore, the extension block is fixedly connected to the side wall of the inner ring by screws, and the cylinder is mounted on the extension block. The actuating end of the cylinder is linked with the upper and lower fixed shells to drive the upper and lower fixed shells to move towards each other or away from each other.

[0010] Preferably, friction pads are provided on the inner surfaces of the upper and lower fixed shells facing each other to increase friction and protect the contact surfaces.

[0011] Preferably, the outer ring wall has an oil inlet that communicates with the groove.

[0012] Preferably, the flange has multiple screw holes for bolt fixing evenly distributed along the circumference.

[0013] Preferably, a flanged bearing for the waist section of an industrial robot further includes a retainer disposed among a plurality of steel balls, the retainer being used to isolate the steel balls from each other.

[0014] Preferably, the retainer consists of two ring-shaped parts, which are connected and fixed together by rivets.

[0015] Preferably, the rubber sheet is arranged in a ring shape and fits between the sidewalls of the groove to seal the outer opening of the sponge sheet.

[0016] Preferably, the friction pad is made of rubber or polyurethane material.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problem of insufficient lubrication, increased wear, and shortened life of existing bearings caused by easy loss of lubricating oil by setting a sponge sheet for absorbing and storing lubricating oil inside the bearing raceway groove and using a rubber sheet to seal the groove. It achieves the technical effect of providing long-term, low-loss lubrication for steel balls, thereby significantly extending the overall service life of the bearing. 2. This utility model solves the problem of the existing bearing installation process relying on cumbersome bolt tightening operations, which is time-consuming, labor-intensive, and inefficient, by integrating a clamping and fixing mechanism driven by a cylinder and equipped with friction pads on the inner ring of the bearing. It achieves the technical effect of quickly clamping, fixing, and positioning the bearing with external equipment, greatly simplifying the installation process and significantly improving the efficiency of robot assembly and maintenance. Attached Figure Description

[0018] Figure 1 A perspective view of the front side of a flanged bearing for the waist section of an industrial robot, as proposed in this utility model. Figure 2 This is a top view of a flanged bearing for the waist section of an industrial robot, as proposed in this utility model. Figure 3 This is a partial structural diagram of the sponge sheet for the bearing in the waist section of an industrial robot with a flange, as proposed in this utility model. Figure 4 This is a partial structural diagram of the steel ball in the bearing of the waist part of an industrial robot with a flange, as proposed in this utility model.

[0019] Legend: 1. Inner ring; 2. Fixing mechanism; 201. Extension block; 202. Cylinder; 203. Upper fixing shell; 204. Lower fixing shell; 205. Friction pad; 206. Screw; 3. Groove; 4. Steel ball; 5. Outer ring; 6. Oil inlet; 7. Sponge sheet; 8. Cage; 9. Rubber sheet; 10. Rivet; 11. Flange; 12. Screw hole. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] Example: Please refer to Figure 1 and Figure 2As shown, the basic frame of a flanged bearing for the waist section of an industrial robot mainly consists of an inner ring 1 and an outer ring 5 rotatably fitted around the inner ring 1. Grooves 3 for forming rolling channels are formed on the inner wall of the inner ring 1 and the outer wall of the outer ring 5, respectively. Multiple steel balls 4 are rolled within the grooves 3, and are equidistantly separated by a retainer 8 and rivets 10 for fixing the retainer 8. A flange 11 is integrally fixed to the outer wall of the outer ring 5. Multiple screw holes 12 for mounting and fixing are evenly distributed along the circumference of the flange 11. To achieve continuous lubrication of the steel balls 4 and reduce lubricant leakage, the grooves 3 are filled with a substance capable of absorbing and storing lubricant. The outer ring 5 has a cotton pad 7, and a rubber pad 9 is also sealed at the outer opening of the groove 3. In order to facilitate the replenishment of lubricating oil, an oil filling port 6 connected to the internal space of the groove 3 is also provided on the wall of the outer ring 5. In order to realize the quick installation and fixation of the entire bearing, a fixing mechanism 2 is also fixedly connected to the side wall of the inner ring 1. The fixing mechanism 2 mainly includes an extension block 201 fixed on the inner ring 1 by screws 206, a cylinder 202 installed on the extension block 201, an upper fixing shell 203 and a lower fixing shell 204. The inner side of the upper fixing shell 203 and the lower fixing shell 204 is also provided with a friction pad 205. By starting the cylinder 202, the upper fixing shell 203 and the lower fixing shell 204 can be driven to achieve the clamping action.

[0022] Please refer to Figure 1 and Figure 2 The fixing mechanism 2 is connected to the inner ring 1 via an extension block 201. Specifically, the mounting surface of the extension block 201 is attached to the outer wall of the inner ring 1 and fixedly connected by screws 206. The extension block 201 serves as a mounting base, with a cylinder 202 serving as a power source mounted on its top. An upper fixing shell 203 and a lower fixing shell 204 are movably mounted on its left and right sides, respectively. The output piston rod of the cylinder 202 is connected to the upper fixing shell 203 and the lower fixing shell 204 via a transmission linkage mechanism, thus driving them synchronously when the cylinder 202 is in operation. The upper fixed shell 203 and the lower fixed shell 204 contract towards each other or expand away from each other. On the inner working surfaces of the upper fixed shell 203 and the lower fixed shell 204 facing each other, a friction pad 205 with a high coefficient of friction is also fixed by adhesive. This clamping structure, which uses a cylinder 202 as a power source and drives the jaws to open and close via a connecting rod, can quickly clamp the upper fixed shell 203 and the lower fixed shell 204 onto other equipment when installation is required. It uses the huge friction force provided by the friction pad 205 to achieve stable fixation, while avoiding damage to the surface of the equipment, ensuring the efficiency and convenience of the installation process.

[0023] As a preferred embodiment, to further improve the stability of clamping and protect the surface of the clamped device, please refer to... Figure 1 and Figure 2 Friction pads 205 are fixedly provided on the inner surfaces of the upper fixed shell 203 and the lower fixed shell 204 that contact the external equipment. The friction pads 205 are preferably made of rubber or polyurethane material. This material has a high coefficient of friction and good elasticity, which can provide sufficient friction to prevent slippage when clamped. At the same time, it can adapt to the micro-unevenness of the contact surface through its own elastic deformation, increase the contact area and buffer the clamping force, thereby avoiding damage to the equipment.

[0024] As another preferred embodiment, for easier lubrication and maintenance of the bearing interior, please refer to... Figure 2 An oil inlet 6 is machined on the radial wall of the outer ring 5. The channel of the oil inlet 6 is directly connected to the internal groove 3. When it is necessary to add lubricating oil, it can be directly injected into the groove 3 through the oil inlet 6. The injected lubricating oil will be quickly absorbed and stored by the sponge sheet 7.

[0025] As another preferred embodiment, please refer to Figure 3 In order to achieve long-term storage and supply of lubricating oil and block contaminants to a certain extent, the sponge sheet 7 is filled in the internal space of the groove 3 in a ring shape. On the outside of the sponge sheet 7, a rubber sheet 9 in the same ring shape is tightly covered. The inner and outer edges of the rubber sheet 9 are respectively attached to the side walls of the inner ring 1 and the outer ring 5, thereby forming an effective seal for the groove 3 and greatly reducing the evaporation and loss of lubricating oil.

[0026] As another preferred embodiment, please refer to Figure 4 In order to ensure that the steel balls 4 can maintain stable operation at equal intervals when rotating at high speed and to avoid collisions and abnormal wear between the steel balls 4, a retainer 8 is provided between the multiple steel balls 4. The retainer 8 is preferably composed of two stamped ring parts, which are connected and fixed by multiple rivets 10 to stably accommodate the steel balls 4 in the pocket formed between them.

[0027] Working principle: First, grooves 3 are provided on the inner wall of the inner ring 1 and the outer wall of the outer ring 5. The retainers 8 are installed on both sides of the steel ball 4 and fixed with rivets 10. Finally, the ball is installed in the groove 3 and rotated. Then, the flange 11 fixed on the outer wall of the outer ring 5 is fixed to other parts through the screw holes 12. At the same time, when the equipment is not in use, oil can be injected into the groove 3 through the oil injection port 6 on the inner wall of the outer ring 5 to lubricate the steel ball 4. The sponge 7 is also wetted to lubricate the steel ball 4 during use. The rubber sheet 9 reduces the loss of lubricating oil, thereby reducing friction during use and improving service life. First, when using the bearing, a fixing mechanism 2 is required for fixation. During use, the extension block 201 is fixed to the side of the inner ring 1 with screws 206. Then, the cylinder 202 is activated, causing the cylinder 202 to extend inward with the upper fixing shell 203 and the lower fixing shell 204, so that the upper fixing shell 203 and the lower fixing shell 204 are clamped on other equipment. At the same time, the friction pad 205 is used to enhance the friction and reduce damage to other equipment, thus achieving the effect of quick installation of the equipment.

Claims

1. A flanged bearing for the waist section of an industrial robot, comprising: Inner ring (1), outer ring (5) disposed outside the inner ring (1), and steel ball (4) rolling between the inner ring (1) and the outer ring (5); The inner ring (1) and the outer ring (5) are provided with grooves (3) for the steel ball (4) to roll. A flange (11) is fixed on the outer wall of the outer ring (5); Its features are, The groove (3) is provided with a sponge sheet (7) for absorbing and storing lubricating oil, and the opening side of the groove (3) is covered with a rubber sheet (9) for preventing lubricating oil from leaking out. Furthermore, a fixing mechanism (2) for quick clamping and installation is connected to the side wall of the inner ring (1). The fixing mechanism (2) includes an extension block (201) fixedly connected to the inner ring (1) by screws (206), and a cylinder (202), an upper fixing shell (203) and a lower fixing shell (204) mounted on the extension block (201). The actuating end of the cylinder (202) is linked with the upper fixed shell (203) and the lower fixed shell (204) to drive the upper fixed shell (203) and the lower fixed shell (204) to move towards each other or away from each other, thereby clamping or releasing the external equipment.

2. The flanged bearing for the waist section of an industrial robot according to claim 1, characterized in that, The upper fixed shell (203) and the lower fixed shell (204) are each provided with friction pads (205) on their inner surfaces facing each other to increase friction and protect the contact surfaces.

3. A flanged bearing for the waist section of an industrial robot according to claim 1, characterized in that, The outer ring (5) has an oil inlet (6) that communicates with the groove (3) on its wall.

4. A flanged bearing for the waist section of an industrial robot according to claim 1, characterized in that, The flange (11) has multiple screw holes (12) evenly distributed along the circumference for bolt fixing.

5. A flanged bearing for the waist section of an industrial robot according to claim 1, characterized in that, A retainer (8) is provided between the plurality of steel balls (4) to isolate the steel balls (4) from each other.

6. A flanged bearing for the waist section of an industrial robot according to claim 5, characterized in that, The retainer (8) consists of two annular parts, which are connected and fixed by rivets (10).

7. A flanged bearing for the waist section of an industrial robot according to claim 1, characterized in that, The rubber sheet (9) is arranged in a ring shape and fits between the sidewalls of the groove (3) to seal the outer opening of the sponge sheet (7).

8. A flanged bearing for the waist section of an industrial robot according to claim 2, characterized in that, The friction pad (205) is made of rubber or polyurethane material.

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