Assembling equipment for installing limiting ring into shock absorber piston rod

Abstract

The utility model relates to assembly equipment for installing a limiting ring into a piston rod of a shock absorber, which comprises a rack, and a piston rod positioning device, a press fitting device and a clamping and positioning device are arranged in the rack. The assembly equipment is high in machining efficiency, automatic assembly of the limiting ring and the piston rod is achieved through matching of the specific piston rod positioning device, the press-fitting device and the clamping positioning device, manual operation steps are reduced, and machining efficiency is greatly improved; in addition, the assembling device is good in machining quality. In the working process, the clamping and positioning device is used for fixing the shock absorber, the threaded sleeve is used for pulling the piston rod, the piston rod is axially positioned, the limiting ring is pressed to the designated position through the press-fitting assembly, the assembly precision and consistency are improved, the assembly error is reduced, and the product quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to mechanical equipment for the production of shock absorbers, and particularly to assembly equipment for installing a limit ring into the piston rod of a shock absorber. Background Technology

[0002] Shock absorbers are an important component of a car's suspension system, playing a crucial role in improving driving stability and ride comfort. When a car encounters extreme conditions (such as severe bumps), the shock absorber may be stretched or compressed to its limit. Therefore, a limit ring is typically installed on the shock absorber's piston rod to restrict the piston rod's travel and prevent damage to related components from rigid impacts.

[0003] However, in existing technologies, the assembly of the shock absorber piston rod and the limiting ring is usually carried out manually or semi-automatically, which has the following shortcomings: 1) Existing technologies rely on manual operation, which is time-consuming, labor-intensive, and inefficient; 2) Manual assembly methods are difficult to guarantee assembly accuracy and consistency, easily causing errors and affecting product quality. Therefore, it is urgent to innovate the assembly method of the limiting ring and piston rod to improve assembly efficiency and accuracy. Utility Model Content

[0004] This invention provides an assembly device for installing a limiting ring into a shock absorber piston rod. The assembly device uses an automated press-fit method to install the limiting ring into the piston rod, thereby restricting the path of the shock absorber piston rod during the compression stroke. Specific piston rod positioning devices, press-fit devices, and clamping positioning devices work together to effectively improve assembly efficiency, facilitate mass production, ensure assembly accuracy and consistency, reduce errors, and improve product quality.

[0005] The technical solution of this utility model is as follows:

[0006] Assembly equipment for inserting a limiting ring into a shock absorber piston rod includes a frame; the frame is provided with a piston rod positioning device, a pressing device, and a clamping positioning device; the piston rod positioning device includes a lifting drive assembly, a rotating drive assembly, and a threaded sleeve assembly; the lifting drive assembly includes a lifting drive base plate and a lifting drive element disposed on the lifting drive base plate; the rotating drive assembly includes a motor connecting plate that can be driven by the lifting drive element, and a sleeve drive motor and a sleeve drive shaft disposed on the motor connecting plate, the sleeve drive motor being drively connected to the sleeve drive shaft; the threaded sleeve assembly includes a guide sleeve and a threaded sleeve installed at the lower end of the guide sleeve; the lower end of the threaded sleeve is provided with... The device has an internally threaded hole that mates with the external thread at the upper end of the piston rod; the guide sleeve is connected to the sleeve drive shaft and can float axially; the pressing device includes a pressing assembly and a pressing drive assembly; the pressing assembly includes a pressure plate that can slide vertically, the pressure plate has a notch in the middle, and the notch is provided with a pressing block for mates with a limiting ring; the pressing drive assembly includes a pressing drive base plate and a pressing drive element disposed on the pressing drive base plate; the pressing drive element can drive the pressure plate; the clamping and positioning device includes a support assembly and a clamping assembly; the support assembly can mate with the bottom end of the shock absorber to form a positioning, and the clamping assembly can clamp and fix the piston rod of the shock absorber.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] (1) The assembly equipment of this utility model has high processing efficiency. Through the cooperation of a specific piston rod positioning device, a pressing device and a clamping positioning device, the limit ring and the piston rod are automatically assembled, reducing manual operation steps and greatly improving processing efficiency.

[0009] (2) The assembly equipment of this utility model has good processing quality; during operation, the damper is fixed by the clamping and positioning device, and the piston rod is pulled by the threaded sleeve to axially position the piston rod. Then, the limit ring is pressed to the designated position by the press assembly, which improves the accuracy and consistency of assembly, reduces assembly error, and ensures the quality of the product.

[0010] Furthermore, in the aforementioned assembly equipment for inserting the limiting ring into the piston rod of the shock absorber, the guide sleeve has a waist-shaped hole. The guide sleeve is fitted onto the sleeve drive shaft and is axially limited by the engagement of a limiting pin on the sleeve drive shaft with the waist-shaped hole. A spring is provided between the sleeve drive shaft and the threaded sleeve. With this structure, the guide sleeve can slide axially, and its stroke is limited by the long waist-shaped hole, meeting functional requirements, facilitating implementation, and ensuring high reliability. In addition, by providing a spring between the sleeve drive shaft and the threaded sleeve, it is more conducive to smoothly screwing the threaded sleeve into the piston rod end thread, improving reliability.

[0011] Furthermore, in the aforementioned assembly equipment for inserting the limiting ring into the piston rod of the shock absorber, the output end of the pressing drive element is provided with a pressing guide plate, and the pressing guide plate and the pressure plate are connected by a pair of pressing connecting columns. Further still, the frame is provided with a pair of guide columns, and both the pressing guide plate and the pressure plate are slidably connected to the guide columns. The guide columns ensure the stability of the pressing assembly movement, preventing offset or shaking, and effectively improving equipment reliability. Furthermore, the output end of the lifting drive element is provided with a lifting guide plate, and the lifting guide plate is connected to the motor connecting plate by a lifting connecting column; the lifting guide plate is slidably connected to the pressing connecting column.

[0012] Furthermore, in the aforementioned assembly equipment for inserting the limiting ring into the piston rod of the shock absorber, the clamping assembly includes a cylinder mounting plate, clamping blocks, and a double-headed cylinder for controlling the clamping blocks; the cylinder mounting plate is fixedly mounted in the frame, and the double-headed cylinder is mounted on the cylinder mounting plate; there are two clamping blocks, each connected to one of the two working ends of the double-headed cylinder. Furthermore, the working surface of the clamping blocks is V-shaped. This V-shaped design ensures that while the two clamping blocks clamp the piston rod, the axis of the piston rod automatically aligns on the symmetrical plane of the V-shaped working surface of the clamping blocks, guaranteeing positioning accuracy and stability.

[0013] Furthermore, in the aforementioned assembly equipment for inserting the limiting ring into the piston rod of the shock absorber, the support assembly includes a support base and a lead screw lifting platform, with the support base disposed on the lead screw lifting platform. This structure controls the position of the support base through the lead screw lifting platform, enabling this invention to be applied to more types of shock absorbers, thus having a wide range of applications. Furthermore, the support base is provided with a V-shaped positioning groove. The V-shaped positioning groove can effectively position the lifting lug at the bottom of the shock absorber and is easy to implement.

[0014] Furthermore, in the assembly equipment described above for installing the limiting ring into the piston rod of the shock absorber, the lifting drive element is preferably a cylinder, and the pressing drive element is preferably an electric cylinder. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembly equipment of this utility model for installing a limiting ring into the piston rod of a shock absorber;

[0016] Figure 2 This is a schematic diagram of the rotary drive assembly and threaded sleeve assembly used in the assembly equipment for installing a limiting ring into the piston rod of a shock absorber; (the motor connecting plate is hidden in the figure).

[0017] Figure 3 This is a schematic diagram of the structure of the press-fit assembly in the assembly equipment for installing the limiting ring into the piston rod of the shock absorber according to this utility model;

[0018] Figure 4This is a schematic diagram of the structure of the clamping assembly used in the assembly equipment for installing the limiting ring into the piston rod of the shock absorber according to this utility model;

[0019] Figure 5 This is a schematic diagram of the vibration damper structure of the assembly equipment for installing the limiting ring into the piston rod of the vibration damper, which is a utility model.

[0020] The labels in the attached diagram are as follows: 1-Frame; 101-Guide post; 2-Lifting drive assembly; 201-Lifting drive base plate; 202-Lifting drive element; 203-Lifting guide plate; 204-Lifting connecting post; 3-Rotation drive assembly; 301-Motor connecting plate; 302-Sleeve drive motor; 303-Sleeve drive shaft; 4-Threaded sleeve assembly; 401-Guide sleeve; 4011-Oval hole; 402-Threaded sleeve; 5-Limit pin; 6-Vibration damper; 601-Limit pin. Ring; 602-Piston rod; 603-Cylinder body; 7-Pressure fitting assembly; 701-Pressure plate; 702-Pressure fitting block; 8-Pressing drive assembly; 801-Pressing drive base plate; 802-Pressing drive element; 803-Pressing guide plate; 804-Pressing connecting column; 9-Support assembly; 901-Support seat; 9011-V-shaped positioning groove; 902-Screw lifting platform; 10-Clamping assembly; 1001-Cylinder mounting plate; 1002-Clamping block; 1003-Double-head cylinder. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as the basis for determining the present invention. Contents not described in detail below or structures not shown in the accompanying drawings are common knowledge in the field.

[0022] Example (see) Figure 1-5 ):

[0023] An assembly device for installing a limiting ring into a shock absorber piston rod includes a frame 1; the frame 1 is provided with a piston rod positioning device, a pressing device, and a clamping positioning device.

[0024] In this embodiment, the piston rod positioning device includes a lifting drive assembly 2, a rotary drive assembly 3, and a threaded sleeve assembly 4. The lifting drive assembly 2 includes a lifting drive base plate 201 and a lifting drive element 202 disposed on the lifting drive base plate 201. The rotary drive assembly 3 includes a motor connecting plate 301 that can be driven by the lifting drive element 202, and a sleeve drive motor 302 and a sleeve drive shaft 303 disposed on the motor connecting plate 301. The sleeve drive motor 302 is hygienically connected to the sleeve drive shaft 303. The threaded sleeve assembly 4 includes a guide sleeve 401 and a threaded sleeve 402 installed at the lower end of the guide sleeve 401. The lower end of the threaded sleeve 402 is provided with an internal threaded hole that mates with the external thread at the upper end of the piston rod 602. The guide sleeve 401 is hygienically connected to the sleeve drive shaft 303 and can float axially.

[0025] In this embodiment, the pressing device includes a pressing assembly 7 and a pressing drive assembly 8. The pressing assembly 7 includes a pressure plate 701 that can slide vertically. The pressure plate 701 has a notch in the middle, and a pressing block 702 for cooperating with a limiting ring 601 is provided in the notch. The pressing drive assembly 8 includes a pressing drive base plate 801 and a pressing drive element 802 disposed on the pressing drive base plate 801. The pressing drive element 802 can drive the pressure plate 701. During operation, the pressing drive element 802 drives the pressure plate 701 to move downward, and the pressing block 702 inserts the limiting ring 601 into the portion below the stepped surface of the piston rod 602, so that the limiting ring 601 and the piston rod 602 are interference-fitted.

[0026] In this embodiment, the clamping and positioning device includes a support component 9 and a clamping component 10; the support component 9 can cooperate with the bottom end of the shock absorber to form a positioning, and the clamping component 10 can clamp and fix the piston rod 602 of the shock absorber.

[0027] During operation, after the shock absorber 6 is fixed by the clamping and positioning device, the lifting drive element 202 drives the motor connecting plate 301 to descend, thereby causing the threaded sleeve assembly 4 to move downward. When the bottom of the threaded sleeve 402 contacts the top of the piston rod 602, the guide sleeve 401 is pushed upward and floats. Subsequently, the sleeve drive motor 302 starts to drive the threaded sleeve 402 to rotate, so that the external thread at the upper end of the piston rod 602 engages with the internal thread hole of the threaded sleeve 402 (i.e., the threaded sleeve 402 is screwed into the external thread at the upper end of the piston rod 602). Then, the pressing drive element 802 drives the pressure plate 701 to move downward, pressing the limiting ring 601 to the designated position.

[0028] In this embodiment, the guide sleeve 401 has a waist-shaped hole 4011. The guide sleeve 401 is sleeved on the sleeve drive shaft 303, and is axially limited by the cooperation of the limiting pin 5 on the sleeve drive shaft 303 and the waist-shaped hole 4011. A spring (located inside the guide sleeve 401) is provided between the sleeve drive shaft 303 and the threaded sleeve 402. With this structure, the guide sleeve 401 can slide axially, and its stroke is limited by the waist-shaped hole 4011, which meets the functional requirements, is easy to implement, and has high reliability. In addition, by providing a spring between the sleeve drive shaft 303 and the threaded sleeve 402, it is more conducive to smoothly screwing the threaded sleeve 402 into the end thread of the piston rod 602, thus improving reliability. During operation, the lifting drive element 202 drives the threaded sleeve 402 to descend until it contacts the piston rod 602, at which point the spring begins to compress. Subsequently, the lifting drive element 202 stops working, and the sleeve drive motor 302 drives the threaded sleeve 402 to rotate. At the same time, the spring rebounds, and the upper ends of the threaded sleeve 402 and the piston rod 602 are connected to each other by threads. This structure can provide an upward reaction force to the vibration damper 6 when the pressing device presses down the limiting ring 601, while ensuring the straightness of the vibration damper 6 during assembly and improving assembly accuracy.

[0029] In this embodiment, the output end of the pressure driving element 802 is provided with a pressure guide plate 803, and the pressure guide plate 803 and the pressure plate 701 are connected by a pair of pressure connecting posts 804.

[0030] In this embodiment, the frame is provided with pairs of guide posts 101, and the pressing guide plate 803 and the pressure plate 701 are both slidably connected to the guide posts 101. The guide posts 101 can ensure the stability of the movement of the pressing assembly 7, avoid deviation or shaking, and effectively improve the reliability of the equipment.

[0031] In this embodiment, the output end of the lifting drive element 202 is provided with a lifting guide plate 203, and the lifting guide plate 203 is connected to the motor connecting plate 301 through a lifting connecting column 204; the lifting guide plate 203 is slidably connected to the pressing connecting column 804.

[0032] In this embodiment, the clamping assembly 10 includes a cylinder mounting plate 1001, a clamping block 1002, and a double-headed cylinder 1003 for controlling the clamping block 1002; the cylinder mounting plate 1001 is fixedly disposed in the frame 1, and the double-headed cylinder 1003 is mounted on the cylinder mounting plate 1001; there are two clamping blocks 1002, which are respectively connected to the two working ends of the double-headed cylinder 1003.

[0033] The working surface of the clamping block 1002 is V-shaped. The V-shaped design allows the axis of the piston rod 602 to automatically align on the symmetrical plane of the V-shaped working surface of the clamping block 1002 while the two clamping blocks 1002 are clamping the piston rod 602, ensuring the accuracy and stability of the positioning.

[0034] In this embodiment, the support assembly 9 includes a support base 901 and a lead screw lifting platform 902, with the support base 901 mounted on the lead screw lifting platform 902. This structure controls the position of the support base 901 via the lead screw lifting platform 902, enabling this invention to be applied to more types of vibration dampers 6, thus having a wide range of applications.

[0035] The support base 901 is provided with a V-shaped positioning groove 9011. The V-shaped positioning groove 9011 can effectively position the lugs at the bottom of the shock absorber 6 and is easy to implement.

[0036] The lifting drive element 202 is a cylinder, and the pressing drive element 802 is an electric cylinder.

[0037] The work process is as follows:

[0038] S1: Place the bottom end of the shock absorber 6 on the support base 901, and then drive the clamping block 1002 to clamp the piston rod 602.

[0039] S2: The lifting drive element 202 drives the threaded sleeve assembly 4 to descend, the threaded sleeve 402 abuts against the upper end of the piston rod 602, the guide sleeve 401 carries the threaded sleeve 402 to float upward, and the spring between the threaded sleeve 402 and the sleeve drive shaft 303 is in a compressed state; then, the sleeve drive motor 302 drives the threaded sleeve assembly 4 to rotate, so that the external thread at the upper end of the piston rod 602 is connected to the threaded sleeve 402 through the thread; the pressing drive element 802 drives the pressure plate 701 to press down, and installs the limit ring 601 into the designated position of the piston rod 602;

[0040] S3: The threaded sleeve assembly 4 rotates in the opposite direction, causing the internal thread of the threaded sleeve 402 to separate from the external thread of the piston rod 602. Subsequently, the threaded sleeve assembly 4 rises, the clamp 1002 releases the piston rod 602, and the shock absorber 6 is removed.

[0041] The foregoing general description of the utility model and its specific embodiments should not be construed as limiting the technical solution of the utility model. Those skilled in the art, based on the disclosure of this application, can add, reduce, or combine the disclosed technical features in the foregoing general description and / or specific embodiments (including examples) without departing from the constituent elements of the utility model, to form other technical solutions within the protection scope of this application.

Claims

1. An assembly apparatus for installing a check ring into a piston rod of a shock absorber, characterized in that: It includes a rack (1); the rack (1) is equipped with a piston rod positioning device, a press-fitting device and a clamping positioning device; The piston rod positioning device includes a lifting driving assembly (2), a rotating driving assembly (3) and a threaded sleeve assembly (4); the lifting driving assembly (2) includes a lifting driving base plate (201) and a lifting driving element (202) arranged on the lifting driving base plate (201); the rotating driving assembly (3) includes a motor connecting plate (301) capable of being driven by the lifting driving element (202), a sleeve driving motor (302) and a sleeve driving shaft (303) arranged on the motor connecting plate (301), and the sleeve driving motor (302) is in transmission connection with the sleeve driving shaft (303); the threaded sleeve assembly (4) includes a guide sleeve (401) and a threaded sleeve (402) mounted on the lower end of the guide sleeve (401); the lower end of the threaded sleeve (402) is provided with an internal thread hole matched with the external thread on the upper end of the piston rod (602); the guide sleeve (401) is in transmission connection with the sleeve driving shaft (303) and can float in the axial direction; The press-fitting device includes a press-fitting assembly (7) and a downward pressing driving assembly (8); the press-fitting assembly (7) includes a press plate (701) capable of sliding in the vertical direction, and the press plate (701) has a notch in the middle, and the notch is provided with a press-fitting block (702) for cooperating with a limiting ring (601); the downward pressing driving assembly (8) includes a downward pressing driving base plate (801) and a downward pressing driving element (802) arranged on the downward pressing driving base plate (801); the downward pressing driving element (802) can drive the press plate (701); The clamping positioning device includes a supporting assembly (9) and a clamping assembly (10); the supporting assembly (9) can cooperate with the bottom end of the shock absorber to form positioning, and the clamping assembly (10) can clamp and fix the piston rod (602) of the shock absorber.

2. The assembly apparatus for installing a check ring into a piston rod of a shock absorber according to claim 1, characterized in that: The guide sleeve (401) is provided with a waist-shaped hole (4011), the guide sleeve (401) is sleeved on the sleeve driving shaft (303), and the axial position is limited through the cooperation of the limiting pin (5) on the sleeve driving shaft (303) and the waist-shaped hole (4011); the sleeve driving shaft (303) and the threaded sleeve (402) are provided with a spring.

3. The assembly apparatus for installing a check ring into a piston rod of a shock absorber according to claim 1, characterized in that: The output end of the downward pressing driving element (802) is provided with a downward pressing guide plate (803), and the downward pressing guide plate (803) is connected with the press plate (701) through a pair of downward pressing connecting columns (804).

4. The assembly apparatus for installing a check ring into a piston rod of a shock absorber according to claim 3, characterized in that: The rack (1) is provided with a pair of guide columns (101), and the downward pressing guide plate (803) and the press plate (701) are both in sliding connection with the guide columns (101).

5. The assembly apparatus for installing a check ring into a piston rod of a shock absorber according to claim 4, characterized in that: The output end of the lifting driving element (202) is provided with a lifting guide plate (203), and the lifting guide plate (203) is connected with the motor connecting plate (301) through a lifting connecting column (204); the lifting guide plate (203) is in sliding connection with the downward pressing connecting column (804).

6. The assembly apparatus for installing a check ring onto a piston rod of a shock absorber of claim 1, wherein: The clamping assembly (10) comprises a cylinder mounting plate (1001), clamping blocks (1002) and double-end cylinders (1003) for controlling the clamping blocks (1002); the cylinder mounting plate (1001) is fixedly arranged in a rack (1), and the double-end cylinders (1003) are mounted on the cylinder mounting plate (1001); the clamping blocks (1002) are two, and are connected with two working ends of the double-end cylinders (1003) respectively.

7. The assembly apparatus for installing a check ring into a piston rod of a shock absorber according to claim 6, characterized in that: The working surface of the clamping block (1002) is V-shaped.

8. The assembly apparatus for installing a check ring onto a piston rod of a shock absorber of claim 1, wherein: The supporting assembly (9) comprises a supporting seat (901) and a screw rod lifting platform (902), and the supporting seat (901) is arranged on the screw rod lifting platform (902).

9. The assembly apparatus for installing a check ring into a piston rod of a shock absorber according to claim 8, characterized in that: A V-shaped positioning groove (9011) is arranged on the supporting seat (901).

10. The assembly apparatus for installing a snap ring onto a piston rod of a shock absorber according to any one of claims 1 to 9, characterized in that: The lifting driving element (202) is a cylinder, and the pressing driving element (802) is an electric cylinder.

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