Roller positioning device for automatically assembling inner assembly of large-taper-angle bearing

Abstract

The utility model relates to the technical field of assembly of bearing inner components, in particular to a roller positioning device for automatic assembly of large-taper-angle bearing inner components, which comprises a rotating base, a roller positioning mechanism arranged in the middle of the rotating base and a jacking component arranged on the rotating base and positioned on one side of the roller positioning mechanism. The roller positioning mechanism comprises a transmission shaft, a movable circular truncated cone, a positioning tray, a positioning core and a limiting assembly. The transmission shaft is vertically arranged at the bottom of the rotating base in a sliding mode, the movable circular truncated cone is arranged at the end of the transmission shaft, the positioning core is composed of three congruent fan-shaped cylinders, the bottoms of the three fan-shaped cylinders are in sliding connection with the upper end face of the positioning tray in a matched mode, and the inner walls of the three fan-shaped cylinders are all attached to the outer wall of the movable circular truncated cone. The limiting assembly is arranged at the bottom of the rotating base and connected with the positioning tray. By adjusting the ascending distance of the transmission shaft and controlling the distance between the three fan-shaped cylinders and the bearing retainer, bearing rollers of different specifications are supported and prevented from toppling over, and assembly of assemblies in the large-taper-angle bearing is not affected.

Description

Technical Field

[0001] This utility model relates to the field of bearing internal component assembly technology, specifically a roller positioning device for automatic assembly of internal components of a large tapered bearing. Background Technology

[0002] During the automated production and assembly process of the large tapered angular bearing internal components, the rollers inevitably tilt after exiting the feeder. Due to the limitation of the cage bottom hole size, the design of the roller positioning core is restricted and cannot achieve the intended target.

[0003] To address the aforementioned issues, Chinese Patent (CN221401415U) proposes a novel positioning device for assembling rollers of large tapered bearings. The device includes a rotating base, a cage positioning disc connected to the top of the rotating base, a cage body mounted at the center of the top of the cage positioning disc, a roller body within the inner cavity of the cage body, a roller positioning core within the inner cavity of the roller body, a first connecting bolt penetrating the bottom of the inner cavity of the roller positioning core, and a push rod connected to the other end of the first connecting bolt. A lifting mold assembly is located within the inner cavity of the rotating base, a lifting plate connected to the top of the lifting mold assembly, and a lifting structure connected to one end of the lifting plate. The device uses a robotic arm to grab the cage and place it in the corresponding position on the cage positioning disc. Subsequently, the roller body falls from the roller feeder into the corresponding position on the cage, and then the roller positioning core moves upward to hold the roller body in place, preventing it from tipping over.

[0004] In this patent, the roller positioning core is an integral structure that assists in positioning the roller by moving it straight up and down to prevent tipping. Because the roller positioning core is an integral structure, it needs to be replaced as a whole when it is damaged, which is inconvenient for maintenance and optimization, and it is also inconvenient to adapt to rollers of different specifications. Utility Model Content

[0005] The purpose of this invention is to provide a roller positioning device for automatic assembly of internal components of a large tapered bearing, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a roller positioning device for automatic assembly of internal components of a large tapered bearing, comprising a rotating base, a roller positioning mechanism disposed in the middle of the rotating base, and a lifting component disposed on the rotating base and located on one side of the roller positioning mechanism. The roller positioning mechanism includes a drive shaft, a movable truncated cone, a positioning tray, a positioning core, and a limiting component. The drive shaft is vertically slidably disposed at the bottom of the rotating base, the movable truncated cone is disposed at the end of the drive shaft, and the positioning tray is disposed on the upper part of the drive shaft. The positioning tray is a cylindrical structure with an inwardly inclined end face. The positioning core is composed of three congruent sector columns. The bottom of the three sector columns is adapted to and slidably connected to the upper end face of the positioning tray. The inner walls of the three sector columns are all in contact with the outer wall of the movable truncated cone. The limiting component is disposed at the bottom of the rotating base and connected to the positioning tray.

[0007] Furthermore, the rotating base includes a cylindrical base and a retainer positioning plate; the base has an open structure and a sliding hole at the bottom, the drive shaft slides into the sliding hole, the retainer positioning plate is connected to the upper end of the base by screws, the retainer positioning plate has an inlet and outlet, and the positioning core is located inside the inlet and outlet.

[0008] Furthermore, the lifting assembly includes a lifting rod, a connecting plate, and a roller lifting mold; the lifting rod is vertically slidably mounted on a cylindrical base, the connecting plate is connected to the lifting rod by screws, the roller lifting mold is mounted on the connecting plate, and both the connecting plate and the roller lifting mold have openings. The diameter of the opening on the connecting plate is larger than the diameter of the positioning tray, and the diameter of the opening on the roller lifting mold is larger than the diameter of the positioning core. The roller lifting mold has a ring structure and its upper end face is located inside the inlet and outlet and is adapted to the inlet and outlet.

[0009] Furthermore, the limiting component includes a limiting screw and a limiting spring; the limiting screw passes through the base and is connected to the positioning tray, the limiting screw slides with the base, and the limiting spring is sleeved on the limiting screw and located between the base and the positioning tray.

[0010] Furthermore, a tension spring connects the fan column to the positioning tray.

[0011] Furthermore, the outer wall of the fan column is provided with a mold hole.

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

[0013] 1. This utility model is used to assemble bearing rollers of different specifications during the assembly of the internal components of a large tapered bearing. When the moving platform and positioning tray are driven to move upward synchronously by the drive shaft, the three fan columns are driven to move upward and move away from each other synchronously. The distance between the three fan columns and the bearing retainer can be controlled by adjusting the upward distance of the drive shaft, thereby supporting the bearing rollers of different specifications and preventing them from tipping over and affecting the assembly of the internal components of the large tapered bearing.

[0014] 2. By setting the positioning core in the prior art as a structure of three equally divided fan columns, when the positioning core is damaged, only one fan column needs to be replaced, without the need to replace the entire positioning core. This facilitates maintenance and optimization, and also reduces production costs. Attached Figure Description

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

[0016] Figure 2 This is a cross-sectional view of the present invention in its working state;

[0017] Figure 3 This is a top view of the present invention.

[0018] In the diagram: 1. Rotating base; 2. Roller positioning mechanism; 3. Lifting assembly; 4. Sector column; 5. Drive shaft; 6. Moving truncated cone; 7. Positioning tray; 8. Positioning core; 9. Limiting assembly; 10. Base; 11. Retainer positioning plate; 12. Lifting rod; 13. Connecting plate; 14. Roller lifting mold; 15. Inlet / outlet; 16. Opening; 17. Limiting screw; 18. Limiting spring. Detailed Implementation

[0019] Please see Figures 1 to 3A roller positioning device for automatic assembly of internal components of a large tapered bearing comprises a rotating base 1, a roller positioning mechanism 2 located in the middle of the rotating base 1, and a lifting component 3 located on the rotating base 1 and on one side of the roller positioning mechanism 2. The roller positioning mechanism 2 includes a drive shaft 5 vertically slidably mounted at the bottom of the rotating base 1, a movable truncated cone 6 located at the end of the drive shaft 5, a positioning tray 7 located on the upper outer wall of the drive shaft 5, and a limiting component 9 located at the bottom of the rotating base 1 and connected to the positioning tray 7. The positioning tray 7 is a cylindrical structure with an inwardly inclined end face. Three equally spaced grooves are formed circumferentially on the inwardly inclined end face of the positioning tray 7. Sector-shaped columns 4 are slidably mounted in the three grooves respectively. Each of the three fan-shaped columns 4 forms the positioning core 8, and the inner walls of the three fan-shaped columns 4 are all in contact with the outer wall of the movable circular platform 6. When the cylinder or electric push rod drives the transmission shaft 5 upward, it drives the movable circular platform 6 upward, and simultaneously drives the positioning tray 7 upward. Since the outer wall of the movable circular platform 6 is a circular platform structure with an inclined surface, it will drive the three fan-shaped columns 4 to move upward while moving away from each other. In order to facilitate the reset of the three fan-shaped columns 4 after the transmission shaft 5 moves downward, an oblique tension spring is connected between the three fan-shaped columns 4 and the positioning tray 7. When the fan-shaped columns 4 move upward, the tension spring is stretched. After the restriction is lost, the tension spring contracts, driving the fan-shaped columns 4 to reset.

[0020] The rotating base 1 consists of a cylindrical base 10 and a retainer positioning plate 11. When in use, the base 10 is used in conjunction with a motor or rotating base to drive the base 10 to rotate. The base 10 has an open structure and a sliding hole at the bottom. The drive shaft 5 slides in the sliding hole. The retainer positioning plate 11 is connected to the upper end of the base 10 by screws. The retainer positioning plate 11 has an inlet and outlet 15. The positioning core 8 is located in the inlet and outlet 15. The retainer positioning plate 11 has a bayonet adapted to the bearing retainer. The bearing retainer is placed in the bayonet by a robot to fix the position of the bearing retainer.

[0021] The lifting assembly 3 is used to position the bearing roller between the bearing retainer and the positioning core 8, pushing the bearing roller into the window openings on the outer walls of the bearing retainer and the three sector pillars 4. The bearing retainer and the three sector pillars 4 have the same number of window openings, which are arranged in a one-to-one correspondence. The assembly includes a lifting rod 12 that is vertically slidably mounted on a cylindrical base 10, a connecting plate 13 connected to the lifting rod 12 by screws, and a roller lifting mold 14 mounted on the connecting plate 13; wherein, in the connecting plate 13 and the roller... Each lifting mold 14 has an opening 16. The diameter of the opening 16 on the connecting plate 13 is larger than the diameter of the positioning tray 7, and the diameter of the opening 16 on the roller lifting mold 14 is larger than the diameter of the positioning core 8, so as to ensure that the positioning tray 7 and the positioning core 8 can move up or down normally. The roller lifting mold 14 is set as an annular structure and its upper end face is located inside the inlet and outlet 15 and is adapted to the inlet and outlet 15, so as to push multiple bearing rollers placed between the bearing retainer and the positioning core 8 into the bearing retainer window hole.

[0022] The upward distance of the drive shaft 5 is limited by setting a limiting component 9. The above-mentioned function is achieved by setting a limiting screw 17 that passes through the base 10 and is connected to the positioning tray 7, and a limiting spring 18 that is sleeved on the limiting screw 17 and located between the base 10 and the positioning tray 7. When the drive shaft 5 moves upward to the length of the limiting screw 17, it prevents the drive shaft 5 from moving upward. At this time, the limiting spring 18 is stretched. When the drive shaft 5 moves downward, the limiting spring 18 is stretched to assist the drive shaft 5 in moving downward.

[0023] The working principle of this utility model is as follows: When assembling the internal components of the large tapered bearing, the bearing retainer is first clamped into the slot on the retainer positioning plate 11 by a robotic arm or other equipment. Then, the transmission shaft 5 is moved upward by a cylinder or electric actuator. During the movement, the movable platform 6 and the positioning tray 7 connected to it are moved upward. Under the constraint of the inclined end face of the positioning tray 7 and the push of the inclined outer wall of the movable platform 6, the three sector columns 4 are moved upward and simultaneously move away from each other. The upward distance of the drive shaft 5 can be controlled according to the specifications of the bearing rollers to ensure the distance between the bearing retainer and the positioning core 8. Then, the rotating base 1 is driven to rotate by a motor or rotating base, and the bearing rollers used for assembly are put into the bearing retainer and the positioning core 8 by the roller feeder. After all the rollers are installed, the lifting rod 12 is driven to move upward by another cylinder, which in turn drives the roller lifting mold 14 connected to it by the connecting plate 13 to move upward, pushing multiple rollers smoothly into the window holes on the bearing retainer. Then, the positioning core 8 moves downward with the drive shaft 5, and the robot grabs the bearing inner ring into the inner assembly. One set of inner assemblies is assembled. The assembled inner assemblies are then moved by the robot and the above steps are repeated to assemble multiple sets of bearing inner assemblies.

Claims

1. A roller positioning device for automatic assembly of internal components of a large tapered bearing, comprising a rotating base (1), a roller positioning mechanism (2) disposed in the middle of the rotating base (1), and a lifting assembly (3) disposed on the rotating base (1) and located on one side of the roller positioning mechanism (2), characterized in that, The roller positioning mechanism (2) includes a drive shaft (5), a movable truncated cone (6), a positioning tray (7), a positioning core (8), and a limiting component (9). The drive shaft (5) is vertically slidably disposed at the bottom of the rotating base (1). The movable truncated cone (6) is disposed at the end of the drive shaft (5). The positioning tray (7) is disposed on the upper part of the drive shaft (5). The positioning tray (7) is a cylindrical structure with an inwardly inclined end face. The positioning core (8) is composed of three congruent sector columns (4). The bottom of the three sector columns is adapted to and slidably connected to the upper end face of the positioning tray (7). The inner wall of the three sector columns is in contact with the outer wall of the movable truncated cone (6). The limiting component (9) is disposed at the bottom of the rotating base (1) and connected to the positioning tray (7).

2. The roller positioning device for automatic assembly of internal components of a large tapered bearing as described in claim 1, characterized in that, The rotating base (1) includes a cylindrical base (10) and a retainer positioning plate (11); the base (10) is an open structure and has a sliding hole at the bottom. The drive shaft (5) is slidably engaged with the sliding hole. The retainer positioning plate (11) is connected to the upper end of the base (10) by screws. The retainer positioning plate (11) has an inlet and outlet (15) and the positioning core (8) is located inside the inlet and outlet (15).

3. The roller positioning device for automatic assembly of internal components of a large tapered bearing as described in claim 2, characterized in that, The lifting assembly (3) includes a lifting rod (12), a connecting plate (13), and a roller lifting mold (14). The lifting rod (12) is vertically slidably mounted on a cylindrical base (10). The connecting plate (13) is connected to the lifting rod (12) by screws. The roller lifting mold (14) is mounted on the connecting plate (13). Both the connecting plate (13) and the roller lifting mold (14) have openings (16). The diameter of the opening (16) on the connecting plate (13) is larger than the diameter of the positioning tray (7). The diameter of the opening (16) on the roller lifting mold (14) is larger than the diameter of the positioning core (8). The roller lifting mold (14) has a ring structure and its upper end face is located inside the inlet and outlet (15) and is adapted to the inlet and outlet (15).

4. The roller positioning device for automatic assembly of internal components of a large tapered bearing as described in claim 3, characterized in that, The limiting component (9) includes a limiting screw (17) and a limiting spring (18); the limiting screw (17) passes through the base (10) and is connected to the positioning tray (7); the limiting screw (17) is slidably engaged with the base (10); and the limiting spring (18) is sleeved on the limiting screw (17) and located between the base (10) and the positioning tray (7).

5. The roller positioning device for automatic assembly of internal components of a large tapered bearing as described in claim 2, characterized in that, A tension spring connects the fan column (4) to the positioning tray (7).

6. The roller positioning device for automatic assembly of internal components of a large tapered bearing as described in claim 2, characterized in that, The outer wall of the fan column (4) is provided with a mold hole.

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