Assembly mechanism for bearing spring snap ring

Abstract

The utility model relates to the technical field of bearing snap ring installation, in particular to a bearing spring snap ring assembling mechanism which comprises a workbench, the workbench is used for containing a bearing frame, a frame is arranged on the workbench, a movable frame located on the workbench is arranged in the frame, and a lifting piece used for controlling the movable frame to move up and down is arranged in the frame. A fixing sleeve connected with the frame is arranged above the workbench, a movable groove is formed in the fixing sleeve, an ejector pin is fixedly or detachably arranged in the movable groove, an expansion clamping pipe located below the ejector pin is movably matched with the interior of the movable groove, the expansion clamping pipe is located over the clamping ring groove of the bearing frame, and an extending hole matched with the ejector pin is formed in the upper end face of the expansion clamping pipe. The lower portion of the expansion clamping pipe is provided with a magnetic piece attracted to the spring clamping ring, and the diameter of the lower portion of the expansion clamping pipe is smaller than the inner diameter of the spring clamping ring. The assembling efficiency of assembling the spring clamping ring into the clamping ring groove in the bearing frame is improved, and the assembling difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing snap ring installation, in particular to an assembly mechanism of a bearing spring snap ring. Background Art

[0002] The spring snap ring of the tripod bearing is assembled by putting the spring snap ring on the mandrel, and then using the sleeve on the outside of the mandrel to move downward to expand the spring snap ring on the outer wall of the mandrel and press it into the snap ring groove on the bearing frame to complete the assembly. However, the spring snap ring is required to be manually expanded and put on the mandrel by the staff, which is time-consuming and labor-intensive, and the assembly is difficult.

[0003] For example, a patent with publication number CN110587269A, entitled a three-pronged bearing retaining ring automatic assembly device, was disclosed on December 20, 2019. The patent includes a base, a bearing placement rod is provided on the base, the processed bearing is placed on the bearing placement rod, a retaining ring installation head is provided above the bearing placement rod, and the retaining ring installation head is driven by the installation cylinder provided at the upper end to perform a downward pressing installation action, a retaining ring loading platform is provided next to the bearing placement rod, a retaining ring placement groove is provided on the retaining ring loading platform, and a pushing cylinder is provided behind the retaining ring placement groove. The retaining ring is pushed by the pushing cylinder to be sleeved on the bearing rod, and the retaining ring installation is automatically completed without manual intervention; however, the inventor found that the inner diameter of a common spring retaining ring is smaller than the diameter of the bearing rod on the bearing frame, and it is very difficult to directly push the spring retaining ring onto the retaining ring groove on the bearing frame. The spring retaining ring is relatively directly sleeved onto the retaining ring groove on the bearing frame, which reduces work efficiency. Summary of the invention

[0004] In view of this, the purpose of the utility model is to provide an assembly mechanism for a bearing spring retaining ring to solve the problem of low assembly efficiency.

[0005] Based on the above purpose, the utility model provides an assembly mechanism for a bearing spring retaining ring, including a workbench, the workbench is used to place a bearing frame, the workbench is provided with a frame, a movable frame located on the workbench is provided in the frame, a lifting member for controlling the upward and downward movement of the movable frame is provided in the frame, a fixed sleeve connected to the frame is provided above the workbench, a movable groove is provided in the fixed sleeve, a ejector pin is provided in the movable groove, an expansion clamp tube located under the ejector pin is movably cooperated in the movable groove, the expansion clamp tube is arranged directly above the retaining ring groove of the bearing frame, an insertion hole cooperated with the ejector pin is provided on the upper end surface of the expansion clamp tube, a magnetic member arranged to be adsorbed with the spring retaining ring is provided at the lower part of the expansion clamp tube, and the diameter of the lower part of the expansion clamp tube is smaller than the inner diameter of the spring retaining ring.

[0006] Optionally, a spring pressure plate is fixedly disposed in the fixing sleeve, and the ejector pin is connected to the fixing sleeve via the spring pressure plate.

[0007] Optionally, an elastic spring is arranged between the spring pressure plate and the expansion and clamping tube.

[0008] Optionally, the lower end of the elastic spring is connected to a spring baffle that abuts against or is connected to the upper end of the expansion and clamping tube.

[0009] Optionally, the lower end of the expansion tube is rotatably connected to at least two rotating shafts, and the multiple rotating shafts are symmetrically arranged about the axis of the expansion tube. The rotating shaft is connected to a push plate, and a torsion spring is sleeved on the rotating shaft. The two ends of the torsion spring are respectively abutted against the side wall of the expansion tube and the push plate.

[0010] Optionally, the expansion tube includes at least two separate petals, a plurality of the separate petals are arranged in a circle, and a gap is provided between two adjacent separate petals.

[0011] Optionally, the magnetic component is a magnet coated on the expansion tube magnetic coating or disposed in the expansion tube.

[0012] Optionally, the positioning member includes a positioning shaft arranged on the movable frame, the axis of the positioning shaft is arranged horizontally, the bearing frame is sleeved on the positioning shaft, a limit block connected to the movable frame is arranged above the positioning shaft, and the limit block is provided with a limit groove for limiting the positioning of the retaining ring groove on the bearing frame.

[0013] Optionally, a guide rail is vertically arranged on the inner side wall of the frame, and the movable frame is slidably connected to the guide rail.

[0014] Optionally, the lifting member includes a rotating shaft rotatably connected to the frame, the rotating shaft is connected to a swing handle located outside the frame, the rotating shaft is coaxially connected to a gear located inside the frame, and one side of the gear is meshingly connected to a rack fixedly connected to the movable frame.

[0015] The beneficial effects of the utility model: the utility model provides an assembly mechanism for a bearing spring clamp ring, the spring clamp ring is sleeved on the lower part of the expansion clamp tube, and the bearing frame is placed on the bearing frame. After placement, the lifting member controls the movable frame and the bearing frame on it to move upward, and the upper end of the bearing frame squeezes the lower end surface of the expansion clamp tube, driving the expansion clamp tube to move upward, so that the ejector pin extends into the expansion clamp tube to open the expansion clamp tube, and the bearing frame continues to move upward until the upper end of the spring clamp ring contacts the lower end of the fixed sleeve, and the bearing frame squeezes the expansion clamp tube to move the expansion clamp tube upward, and the spring clamp ring comes from the expansion clamp tube to the bearing frame until it enters the clamping ring groove on the bearing frame, completing the press fitting, thereby improving the assembly efficiency of the spring clamp ring assembled into the clamping ring groove on the bearing frame and reducing the assembly difficulty. The assembly process does not require the staff to exert a large force, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0018] Figure 2 for Figure 1 Schematic diagram of the structure of the cross section of AA;

[0019] Figure 3 for Figure 1 A schematic diagram of the structure of the cross section of the middle BB;

[0020] Figure 4 It is a structural schematic diagram of the spring clamp ring of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the expansion and clamping tube of the utility model;

[0022] Figure 6 This is a schematic diagram of the internal structure of the expansion and clamping tube of the utility model;

[0023] Figure 7 It is a structural schematic diagram of the fixing sleeve of the utility model.

[0024] In the figure: 1. workbench; 2. frame; 3. guide rail; 4. swing handle; 5. rotating shaft; 6. gear; 7. rack; 8. moving frame; 9. limit block; 10. positioning shaft; 11. bearing frame; 12. snap ring groove; 13. spring snap ring; 14. fixed sleeve; 15. movable groove; 16. spring pressure plate; 17. elastic spring; 18. spring baffle; 19. ejector pin; 20. expansion clamp tube; 21. push plate. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0026] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] like Figure 1-Figure 7 As shown, an assembly mechanism for a bearing spring retaining ring 13 includes a workbench 1, wherein the workbench 1 is used to place a bearing frame 11, wherein a frame 2 is arranged on the workbench 1, wherein a movable frame 8 located on the workbench 1 is arranged in the frame 2, wherein a lifting member for controlling the upward and downward movement of the movable frame 8 is arranged in the frame 2, wherein a fixed sleeve 14 connected to the frame 2 is arranged above the workbench 1, wherein a movable groove 15 is arranged in the fixed sleeve 14, wherein a ejector pin 19 is fixedly or detachably arranged in the movable groove 15, wherein an expansion and clamping tube 20 located under the ejector pin 19 is movably matched in the movable groove 15, wherein the expansion and clamping tube 20 is arranged directly above the retaining ring groove 12 of the bearing frame 11, wherein an insertion hole matched with the ejector pin 19 is arranged on the upper end surface of the expansion and clamping tube 20, wherein a magnetic member adsorbed with the spring retaining ring 13 is arranged at the lower part of the expansion and clamping tube 20, and the diameter of the lower part of the expansion and clamping tube 20 is smaller than the inner diameter of the spring retaining ring 13.

[0028] The staff manually puts the spring clamp ring 13 on the lower part of the expansion clamp tube 20, and the magnetic part on the expansion clamp tube 20 absorbs the spring clamp ring 13 so that the spring clamp ring 13 is not easy to fall off. In addition, the staff places the movable frame 8 on the bearing frame 11. After placement, the lifting part controls the movable frame 8 and the bearing frame 11 on it to move upward, and the upper end of the bearing frame 11 squeezes the lower end surface of the expansion clamp tube 20, driving the expansion clamp tube 20 to move upward, so that the ejector pin 19 extends into the expansion clamp tube 20 to open the expansion clamp tube 20, and the bearing frame 11 continues to move upward until the upper end of the spring clamp ring 13 contacts the lower end of the fixed sleeve 14, the bearing frame 11 squeezes the expansion clamp tube 20 to move the expansion clamp tube 20 upward, and the spring clamp ring 13 comes from the expansion clamp tube 20 to the bearing frame 11, until it enters the clamping ring groove 12 on the bearing frame 11, completing the press installation, which improves the assembly efficiency of the spring clamp ring 13 into the clamping ring groove 12 on the bearing frame 11 and reduces the assembly difficulty.

[0029] A spring pressure plate 16 is fixedly arranged in the fixing sleeve 14, and the ejector pin 19 is connected to the fixing sleeve 14 via the spring pressure plate 16. The setting of the spring pressure plate 16 facilitates better fixing of the ejector pin 19 in the fixing sleeve 14. When the expansion and clamping tube 20 moves upward, the ejector pin 19 does not deviate or move, so that the ejector pin 19 is convenient to extend into the expansion and clamping tube 20 to expand it.

[0030] The spring pressure plate 16 is provided with air holes that penetrate up and down, so as to balance the air pressure above and below the spring pressure plate 16 .

[0031] The expansion tube 20 is provided with an elastic spring 17 located in the fixing sleeve 14, and the elastic spring 17 is arranged between the spring pressure plate 16 and the expansion tube 20. The arrangement of the elastic spring 17 facilitates the rapid resetting of the expansion tube 20 after it is moved upward, and facilitates the subsequent installation of other spring retaining rings 13 and the bearing frame 11. In addition, the arrangement of the elastic spring 17 also facilitates the steady upward movement of the expansion tube 20 when the expansion tube 20 is moved upward.

[0032] The lower end of the elastic spring 17 is connected to a spring baffle 18 that abuts or is connected to the upper end of the expansion and clamping tube 20 , so that the elastic spring 17 does not directly contact the expansion and clamping tube 20 , thereby preventing the elastic spring 17 from affecting the use of the expansion and clamping tube 20 .

[0033] The lower end of the expansion tube 20 is rotatably connected to at least two rotating shafts, and the multiple rotating shafts are symmetrically arranged about the axis of the expansion tube 20. The rotating shaft is connected to a push plate 21, and a torsion spring is sleeved on the rotating shaft. The two ends of the torsion spring are respectively abutted against the side walls of the expansion tube 20 and the push plate 21, and the lower end of the push plate 21 is abutted against the side wall of the part of the expansion tube 20 that extends out of the movable groove 15. In the process of the expansion tube 20 moving upward, the push plate 21 pushes the spring retaining ring 13 sleeved on the expansion tube 20 downward until the spring retaining ring 13 is pushed into the retaining ring groove 12 on the bearing frame 11. The setting of the push plate 21 facilitates speeding up the insertion of the spring retaining ring 13 into the retaining ring groove 12.

[0034] The expansion tube 20 includes at least two separate petals, and the multiple separate petals are arranged in a circle, and a gap is set between two adjacent separate petals. The multiple separate petals are designed in this way to facilitate the expansion operation of the expansion tube 20.

[0035] The outer side of the expansion and clamping tube 20 is provided with at least one circle of air-permeable grooves, so as to facilitate the expansion and clamping tube 20 to move up and down more smoothly and reduce the friction between the side wall of the expansion and clamping tube 20 and the inner wall of the fixing sleeve 14 .

[0036] The expansion and clamping tube 20 is replaceable, and the expansion and clamping tube 20 can also be replaced by an integrally formed rubber tube.

[0037] The magnetic part can be a magnet coated on the magnetic coating of the expansion clamp tube 20 or arranged in the expansion clamp tube 20. The material of the spring clamp 13 can be magnetic steel. When the spring clamp 13 is put on the lower part of the expansion clamp tube 20, the spring clamp 13 is adsorbed and arranged with the magnetic part on the expansion clamp tube 20, and the spring clamp 13 is adsorbed and put on the expansion clamp tube 20.

[0038] The movable frame 8 is provided with a positioning member, and the positioning member is used to position and fix the bearing frame 11 .

[0039] The positioning member includes a positioning shaft 10 arranged on the movable frame 8, the axis of the positioning shaft 10 is arranged horizontally, the bearing frame 11 is sleeved on the positioning shaft 10, and a limit block 9 connected to the movable frame 8 is arranged above the positioning shaft 10, and the limit block 9 is provided with a limit groove for limiting the positioning of the retaining ring groove 12 on the bearing frame 11. The setting of the limit groove is convenient for preventing the bearing frame 11 from deflecting and facilitating the docking of the spring retaining ring 13 with the retaining ring groove 12. When the bearing frame 11 needs to be placed on the movable frame 8, the staff installs the bearing frame 11 on the positioning shaft 10 on the movable frame 8, and the retaining ring groove 12 on the bearing frame 11 to be installed with the spring retaining ring 13 is located in the limit groove of the limit block 9, and the bearing frame 11 is placed at this time.

[0040] The positioning member includes two clamping and driving telescopic rods arranged on the movable frame 8, the telescopic ends of the two clamping and driving telescopic rods are arranged facing each other, and the telescopic ends of the two clamping and driving telescopic rods are both provided with clamping plates. The two clamping and driving telescopic rods are extended to control the two clamping plates to move toward each other to clamp and position the bearing frame 11.

[0041] The inner wall of the frame 2 is vertically provided with a guide rail 3, and the movable frame 8 is slidably connected to the guide rail 3. The side wall of the movable frame 8 is fixedly connected with a slider slidably connected to the guide rail 3. The setting of the guide rail 3 is convenient for limiting the movable frame 8 to move only up and down, and preventing deflection from occurring during the up and down movement.

[0042] In order to facilitate the up and down movement of the mobile frame 8 and the bearing frame 11 on the mobile frame 8, the lifting member includes a rotating shaft 5 rotatably connected to the frame 2, the rotating shaft 5 is connected to a swing handle 4 located on the outside of the frame 2, the rotating shaft 5 is coaxially connected to a gear 6 located on the inside of the frame 2, one side of the gear 6 is meshingly connected to a rack 7 fixedly connected to the mobile frame 8, the staff presses down the swing handle 4 to drive the rotating shaft 5 and the gear 6 thereon to rotate counterclockwise, so that the rack 7 meshing with the gear 6 moves upward, driving the mobile frame 8 to move upward, and then the bearing frame 11 on the mobile frame 8 begins to squeeze the expansion tube 20.

[0043] The lifting component is replaceable, and the lifting component may be a lifting cylinder connected to the workbench 1, the lifting cylinder is vertically arranged, the telescopic end of the lifting cylinder is connected to the moving frame 8, and the telescopic end of the lifting cylinder is used to control the lifting of the moving frame 8.

[0044] Working process: the staff manually puts the spring snap ring 13 on the lower part of the expansion and clamping tube 20, and the magnetic part on the expansion and clamping tube 20 adsorbs the spring snap ring 13, so that the spring snap ring 13 does not fall off the expansion and clamping tube 20. In addition, the positioning part on the movable frame 8 positions the bearing frame 11 brought by the staff, so that the bearing frame 11 is placed directly below the spring snap ring 13, and the lifting part controls the movable frame 8 and the bearing frame 11 thereon to move upward, and the upper end of the bearing frame 11 contacts the lower end surface of the expansion and clamping tube 20, and then squeezes the expansion and clamping tube 20, and the expansion and clamping tube 20 moves upward, and the ejector pin 19 extends into the expansion and clamping tube 20 to open the expansion and clamping tube 20, and the bearing frame 11 continues to move upward, and the push plate 21 pushes the spring snap ring 13 downward relative to the expansion and clamping tube 20, and pushes the spring snap ring 13 into the snap ring groove 12 on the bearing frame 11 to complete the press-fitting; the above process does not require the staff to apply a large force, reduces the assembly difficulty, improves the assembly efficiency, and makes the assembly cycle shorter.

[0045] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0046] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An assembly mechanism for a bearing spring retaining ring, comprising a workbench for placing a bearing frame, characterized in that: A frame is provided on the workbench, a movable frame located on the workbench is provided in the frame, a lifting member for controlling the upward and downward movement of the movable frame is provided in the frame, a fixed sleeve connected to the frame is provided above the workbench, a movable groove is provided in the fixed sleeve, a ejector pin is provided in the movable groove, an expansion clamp tube located under the ejector pin is movably matched in the movable groove, the expansion clamp tube is provided just above the retaining ring groove of the bearing frame, an insertion hole matched with the ejector pin is provided on the upper end surface of the expansion clamp tube, a magnetic member adsorbed with a spring retaining ring is provided at the lower part of the expansion clamp tube, and the diameter of the lower part of the expansion clamp tube is smaller than the inner diameter of the spring retaining ring.

2. The assembly mechanism of a bearing spring snap ring according to claim 1, characterized in that: A spring pressure plate is fixedly arranged in the fixing sleeve, and the ejector pin is connected to the fixing sleeve via the spring pressure plate.

3. The assembly mechanism of a bearing spring snap ring according to claim 2, characterized in that: An elastic spring is arranged between the spring pressure plate and the expansion and clamping tube.

4. The assembly mechanism of a bearing spring snap ring according to claim 3, characterized in that: The lower end of the elastic spring is connected with a spring baffle which abuts against or is connected with the upper end of the expansion and clamping tube.

5. The assembly mechanism of a bearing spring snap ring according to claim 1, characterized in that: The lower end of the expansion tube is rotatably connected to at least two rotating shafts, and the multiple rotating shafts are symmetrically arranged about the axis of the expansion tube. The rotating shaft is connected to a push plate, and a torsion spring is sleeved on the rotating shaft. The two ends of the torsion spring are respectively in contact with the side wall of the expansion tube and the push plate.

6. The assembly mechanism of a bearing spring snap ring according to claim 1, characterized in that: The expansion tube comprises at least two separate petals, a plurality of the separate petals are arranged in a circle, and a gap is provided between two adjacent separate petals.

7. The assembly mechanism of a bearing spring snap ring according to claim 1, characterized in that: The magnetic component is a magnet coated on the magnetic coating of the expansion clamp tube or arranged in the expansion clamp tube.

8. The assembly mechanism of a bearing spring snap ring according to claim 1, characterized in that: The movable frame is provided with a positioning member, and the positioning member is used to position and fix the bearing frame. The positioning member includes a positioning shaft provided on the movable frame, and the axis of the positioning shaft is horizontally provided. The bearing frame is sleeved on the positioning shaft, and a limit block connected to the movable frame is provided above the positioning shaft. The limit block is provided with a limit groove for limiting the positioning of the retaining ring groove on the bearing frame.

9. The assembly mechanism of a bearing spring snap ring according to claim 1, characterized in that: A guide rail is vertically arranged on the inner side wall of the frame, and the movable frame is slidably connected to the guide rail.

10. The assembly mechanism of a bearing spring snap ring according to claim 1, characterized in that: The lifting member includes a rotating shaft rotatably connected to the frame, the rotating shaft is connected to a swing handle located outside the frame, the rotating shaft is coaxially connected to a gear located inside the frame, and one side of the gear is meshingly connected to a rack fixedly connected to the moving frame.

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