A piston and oil seal press-fitting device for damper assembly

By using horizontal and vertical cylinders to drive feeding and pressing, combined with an arc-shaped positioning plate and photoelectric sensors, the problems of piston and oil seal positioning deviation and contamination caused by manual operation in traditional damper assembly are solved, achieving efficient and precise oil seal pressing.

CN224424851UActive Publication Date: 2026-06-30SICHUAN ZHONGWEI THERMAL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SICHUAN ZHONGWEI THERMAL TECHNOLOGY CO LTD
Filing Date
2025-07-23
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In traditional damper assembly, the press-fitting of the piston and oil seal relies on manual labor or simple tools, which leads to positioning deviations, poor sealing, low efficiency, easy contamination, and uneven press-fitting tightness.

Method used

The system uses a horizontal cylinder to push the feeding plate and piston head to achieve automatic feeding of the oil seal, and a vertical cylinder to drive the pressing cover to move back and forth to complete the pressing. Combined with an arc-shaped positioning plate and photoelectric sensors, it achieves precise positioning and detection, and the storage cylinder is automatically fed.

Benefits of technology

It achieves precise press-fitting of piston and oil seal, improves efficiency, avoids contamination from manual contact, and ensures press-fitting accuracy and sealing effect.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224424851U_ABST
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Abstract

This utility model belongs to the field of damper assembly technology, specifically a piston and oil seal pressing device for damper assembly. It includes an assembly table, a transverse cylinder fixedly connected to the top outer wall of the assembly table by screws, and a feeding plate fixedly connected to the piston rod of the transverse cylinder. A piston pusher head is welded to one side of the outer wall of the feeding plate. A storage cylinder for stacking oil seals is provided on the top of the feeding plate, and a vertical cylinder is provided on the top of the assembly table. This utility model uses an arc-shaped positioning plate to accurately position the piston, and a photoelectric sensor to detect the piston position, solving the problem of traditional manual positioning deviation. It reduces manual contact, improves efficiency, avoids contamination, and overcomes the drawbacks of manually placing oil seals. By using the transverse cylinder to push the feeding plate and piston pusher head, it achieves automatic feeding of oil seals and automatic unloading of the piston after pressing, ensuring pressing accuracy and solving the problems of uneven tightness and dispersed process in traditional pressing.
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Description

Technical Field

[0001] This utility model relates to the field of damper assembly technology, and in particular to a piston and oil seal press-fitting device for damper assembly. Background Technology

[0002] A damper is a device that slows down motion by providing resistance. It is widely used in machinery, construction, and other fields. The assembly quality of the internal piston and oil seal directly affects the damping effect and service life. The piston and oil seal must be precisely matched to ensure sealing performance and prevent oil leakage during operation.

[0003] In traditional damper assembly, the press-fitting of the piston and oil seal often relies on manual labor or simple tools. Manual placement of the piston can easily lead to positioning errors, resulting in poor sealing after press-fitting.

[0004] In addition, oil seals need to be placed manually one by one, which is inefficient and easily contaminated by hand contact. Furthermore, the lack of precise control during the pressing process can easily lead to over-tightening or under-tightening. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a piston and oil seal press-fitting device for damper assembly, which overcomes the deficiencies of existing technologies and effectively solves the problem that the press-fitting of pistons and oil seals relies heavily on manual labor or simple tools.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A piston and oil seal pressing device for damper assembly includes an assembly table. A transverse cylinder is fixedly connected to the top outer wall of the assembly table by screws, and a feeding plate is fixedly connected to the piston rod of the transverse cylinder. A piston pusher head is welded to one side outer wall of the feeding plate. A storage cylinder for stacking oil seals is provided on the top of the feeding plate. A vertical cylinder is provided on the top of the assembly table, and a pressing cover is fixedly connected to the piston rod of the vertical cylinder.

[0008] The above solution achieves automatic feeding of oil seals and automatic unloading of pistons after pressing by using a horizontal cylinder to push the feeding plate and piston head. The vertical cylinder drives the pressing cover to move back and forth downwards to remove the oil seals and complete the pressing, ensuring pressing accuracy and solving the problems of uneven tightness and scattered process in traditional pressing. The piston is precisely positioned by an arc-shaped positioning plate and the piston position is detected by a photoelectric sensor, which solves the problem of traditional manual positioning deviation. Furthermore, the storage cylinder can stack oil seals and automatically feed them through the discharge port, which can reduce manual contact, improve efficiency and avoid contamination, and overcome the drawbacks of manually placing oil seals.

[0009] Preferably, the top outer wall of the assembly table is located below the press cover and is fixedly connected by screws to an arc-shaped positioning plate for positioning the piston.

[0010] Using the above method, the arc-shaped positioning plate can position the piston, so that the piston is located at the machining station.

[0011] Preferably, a photoelectric sensor is installed on one side of the arc-shaped positioning plate on the top outer wall of the assembly table.

[0012] The above solution allows the photoelectric sensor on one side of the arc-shaped positioning plate to detect whether the piston is in position, ensuring safe pressing.

[0013] Preferably, a connecting plate is welded to the bottom of the outer wall of the storage cylinder, and a support column is fixedly connected between the connecting plate and the assembly table.

[0014] With the above solution, the storage cylinder at the top of the feeding plate is fixed by the connecting plate and the support column, and the oil seals can be stacked from top to bottom inside the storage cylinder.

[0015] Preferably, a gantry frame is fixedly connected to the top outer wall of the assembly platform by screws, and the vertical cylinder is fixedly connected to the top outer wall of the gantry frame by screws.

[0016] With the above scheme, the gantry frame on the assembly table is used to fix the vertical cylinder, and the press-fit cover connected to the piston rod of the vertical cylinder is located directly above the piston.

[0017] Preferably, one end of the top outer wall of the feeding plate is provided with a discharge port for placing the oil seal, and the inner diameter of the discharge port is adapted to the outer diameter of the pressing cover.

[0018] With the above scheme, when the feeding plate moves, the oil seal at the bottom of the storage cylinder can fall into the discharge port. The discharge port is matched with the size of the pressing cover. The pressing cover can transfer the oil seal into the pressing cover when it moves downward. The pressing cover and the oil seal maintain an interference fit to prevent the oil seal from falling out of the pressing cover.

[0019] Preferably, the top outer wall of the assembly platform has a discharge port at the end away from the transverse cylinder, and the bottom outer wall of the assembly platform is welded with a discharge platform at the bottom of the discharge port.

[0020] With the above solution, the discharge port at the end of the assembly table cooperates with the bottom discharge table, making it convenient for the piston to slide down and be collected after pressing.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. The damper assembly piston and oil seal pressing equipment designed in this paper uses an arc-shaped positioning plate to accurately position the piston and a photoelectric sensor to detect the piston position, which solves the problem of traditional manual positioning deviation. In addition, the storage cylinder can stack oil seals and automatically feed them through the discharge port, which can reduce manual contact, improve efficiency and avoid pollution, and overcome the drawbacks of manually placing oil seals.

[0023] 2. The piston and oil seal pressing equipment for damper assembly designed in this paper realizes automatic feeding of oil seals and automatic unloading of pistons after pressing by pushing the feeding plate and piston head with the horizontal cylinder. In addition, the vertical cylinder drives the pressing cover to move back and forth downwards to remove the oil seal and complete the pressing, ensuring pressing accuracy and solving the problems of uneven tightness and scattered process in traditional pressing. Attached Figure Description

[0024] Figure 1 This utility model presents a three-dimensional schematic diagram of the overall structure of a piston and oil seal press-fitting device for damper assembly. Figure 1 ;

[0025] Figure 2 This utility model presents a three-dimensional schematic diagram of the overall structure of a piston and oil seal press-fitting device for damper assembly. Figure 2 ;

[0026] Figure 3 This is a schematic diagram of the structure of the feeding plate and the piston head after the movement of the piston and oil seal pressing equipment for damper assembly proposed in this utility model.

[0027] Figure 4 This utility model provides a schematic diagram of the structure of a piston and oil seal press-fitting device for damper assembly, in which the oil seal is press-fitted onto the piston.

[0028] In the diagram: 1. Assembly table; 2. Horizontal cylinder; 3. Feeding plate; 4. Push piston head; 5. Storage cylinder; 6. Vertical cylinder; 7. Press cover; 8. Arc-shaped positioning plate; 9. Photoelectric sensor; 10. Connecting plate; 11. Support column; 12. Gantry frame; 13. Discharge port; 14. Discharge platform; 15. Unloading port. Detailed Implementation

[0029] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0030] Reference Figures 1-4 Example 1: A piston and oil seal pressing device for damper assembly includes an assembly table 1. A transverse cylinder 2 is fixedly connected to the top outer wall of the assembly table 1 by screws, and a feeding plate 3 is fixedly connected to the piston rod of the transverse cylinder 2. A piston pusher head 4 is welded to one side outer wall of the feeding plate 3, and a storage cylinder 5 for stacking oil seals is provided on the top of the feeding plate 3.

[0031] Assembly table 1 serves as the equipment foundation, with a transverse cylinder 2 fixed to its top. The piston rod of the transverse cylinder 2 is connected to the feeding plate 3, which can drive the feeding plate 3 to move laterally. The push piston head 4 on one side of the feeding plate 3 moves with it, and is used to push the piston that has completed the pressing to the unloading port 13.

[0032] In this embodiment, the horizontal cylinder 2 pushes the feeding plate 3 and the piston head 4 to move, realizing the automatic feeding of the oil seal and the automatic unloading of the piston after pressing. The vertical cylinder 6 drives the pressing cover 7 to move back and forth downwards to remove the oil seal and complete the pressing, ensuring the pressing accuracy and solving the problems of uneven tightness and dispersed process in traditional pressing.

[0033] In embodiment 2, a vertical cylinder 6 is provided on the top of the assembly table 1, and a press cover 7 is fixedly connected to the piston rod of the vertical cylinder 6. An arc-shaped positioning plate 8 for positioning the piston is fixedly connected to the top outer wall of the assembly table 1 below the press cover 7 by screws. A photoelectric sensor 9 is installed on one side of the arc-shaped positioning plate 8 on the top outer wall of the assembly table 1.

[0034] The gantry frame 12 on the assembly table 1 is used to fix the vertical cylinder 6. The pressing cover 7 connected to the piston rod of the vertical cylinder 6 is located directly above the piston. The arc-shaped positioning plate 8 can position the piston so that the piston is located at the processing station. The photoelectric sensor 9 on one side of the arc-shaped positioning plate 8 can detect whether the piston is in position to ensure pressing safety.

[0035] In this embodiment, the piston is precisely positioned by the arc-shaped positioning plate 8, and the piston position is detected by the photoelectric sensor 9, which solves the problem of traditional manual positioning deviation. In addition, the storage cylinder 5 can stack oil seals and automatically feed them through the discharge port 15, which can reduce manual contact, improve efficiency and avoid pollution, and overcome the drawbacks of manually placing oil seals.

[0036] A connecting plate 10 is welded to the bottom of the outer wall of the storage cylinder 5, and a support column 11 is fixedly connected between the connecting plate 10 and the assembly table 1.

[0037] The storage cylinder 5 at the top of the feeding plate 3 is fixed by the connecting plate 10 and the support column 11, and oil seals can be stacked inside the storage cylinder 5 from top to bottom.

[0038] The top outer wall of the assembly platform 1 is fixedly connected to the gantry frame 12 by screws, and the vertical cylinder 6 is fixedly connected to the top outer wall of the gantry frame 12 by screws.

[0039] The top outer wall of the feeding plate 3 is provided with a discharge port 15 for placing the oil seal, and the inner diameter of the discharge port 15 is adapted to the outer diameter of the press cover 7.

[0040] When the feeding plate 3 moves, the oil seal at the bottom of the storage cylinder 5 can fall into the discharge port 15. The discharge port 15 is adapted to the size of the pressing cover 7. The pressing cover 7 moves downward to transfer the oil seal into the pressing cover 7. The pressing cover 7 and the oil seal maintain an interference fit to prevent the oil seal from falling out of the pressing cover 7.

[0041] The top outer wall of the assembly platform 1 is provided with a discharge port 13 at the end away from the transverse cylinder 2, and a discharge platform 14 is welded to the bottom outer wall of the assembly platform 1 at the bottom of the discharge port 13.

[0042] The discharge port 13 at the end of the assembly table 1 cooperates with the bottom discharge table 14 to facilitate the collection of the piston after pressing.

[0043] Working principle: Oil seals are stacked in the storage cylinder 5, and the bottom oil seal falls into the discharge port 15 of the feeding plate 3. The horizontal cylinder 2 is started, pushing the feeding plate 3 to move. At this time, the piston head 4 pushes the previously pressed piston into the discharge port 13, and discharges through the discharge table 14 to complete the discharge. At the same time, the piston to be pressed is placed on the arc-shaped positioning plate 8, and the oil seal carried by the discharge port 15 moves to directly below the pressing cover 7.

[0044] After the photoelectric sensor 9 detects that the piston is in position, the vertical cylinder 6 drives the pressing cover 7 to descend for the first time, transferring the oil seal into the pressing cover 7. The oil seal is then pressed onto the piston through the discharge port 15. The feeding plate 3 then resets, and the vertical cylinder 6 drives the pressing cover 7 to descend for the second time, pressing the oil seal onto the piston. After completion, the next oil seal in the storage cylinder 5 falls into the discharge port 15, entering the next cycle.

Claims

1. A piston and oil seal press fitting apparatus for damper assembly, comprising an assembly table (1), characterized in that, The top outer wall of the assembly table (1) is fixedly connected to a horizontal cylinder (2) by screws, and a feeding plate (3) is fixedly connected to the piston rod of the horizontal cylinder (2). A piston head (4) is welded to one side outer wall of the feeding plate (3). A storage cylinder (5) for stacking oil seals is provided on the top of the feeding plate (3). A vertical cylinder (6) is provided on the top of the assembly table (1), and a pressure cover (7) is fixedly connected to the piston rod of the vertical cylinder (6).

2. The piston and oil seal press fitting apparatus for damper assembly according to claim 1, wherein The top outer wall of the assembly table (1) is located below the press cover (7) and is fixedly connected by screws to an arc-shaped positioning plate (8) for positioning the piston.

3. The piston and oil seal press assembly apparatus for damper assembly of claim 2, wherein, A photoelectric sensor (9) is installed on the top outer wall of the assembly table (1) on one side of the arc-shaped positioning plate (8).

4. The piston and oil seal press assembly apparatus for damper assembly of claim 1, wherein, A connecting plate (10) is welded to the bottom of the outer wall of the storage cylinder (5), and a support column (11) is fixedly connected between the connecting plate (10) and the assembly table (1).

5. The piston and oil seal press-fitting device for damper assembly according to claim 1, characterized in that, The top outer wall of the assembly platform (1) is fixedly connected to the gantry frame (12) by screws, and the vertical cylinder (6) is fixedly connected to the top outer wall of the gantry frame (12) by screws.

6. The piston and oil seal press-fitting device for damper assembly according to claim 1, characterized in that, The top outer wall of the feeding plate (3) is provided with a discharge port (15) for placing the oil seal, and the inner diameter of the discharge port (15) is adapted to the outer diameter of the press cover (7).

7. The piston and oil seal press-fitting device for damper assembly according to claim 1, characterized in that, The top outer wall of the assembly platform (1) is provided with a feeding port (13) at one end away from the transverse cylinder (2), and a feeding platform (14) is welded to the bottom outer wall of the assembly platform (1) at the bottom of the feeding port (13).