Shock absorber cylinder body assembling device and assembling method thereof

Abstract

The invention relates to a shock absorber cylinder body assembling device and an assembling method thereof, and belongs to the technical field of precise assembling of automobile key parts, the shock absorber cylinder body assembling device is used for pressing a working cylinder into a third cylinder in a high-precision mode, and the shock absorber cylinder body assembling device comprises a lifting assembly, a limiting assembly, a righting assembly and a press-fitting assembly; the position of the lower end of the third cylinder can be limited and positioned by lifting the abutting piece; the limiting assembly comprises a pressing plate, the pressing plate is provided with a U-shaped groove, the U-shaped groove is provided with step parts arranged in parallel, and the step parts limit and position the height of the third cylinder through step type height differentiation design; the centralizing assembly comprises a mounting frame, a sliding column, a sliding plate, a centralizing block and a centralizing wheel; righting wheels are arranged on the opposite side surfaces of the righting blocks; the press-fitting assembly comprises a press-fitting power piece and a pressing head, and the press-fitting power piece can drive the centralizing assembly and the pressing head to move in the vertical direction; by means of the structure, precise positioning of press fitting of the working cylinder is achieved, and the technical problem that assembly precision is insufficient is solved.

Description

Technical Field

[0001] This invention relates to the field of precision assembly technology for key automotive components, and in particular to a shock absorber cylinder assembly device and its assembly method. Background Technology

[0002] In the field of shock absorber manufacturing, cylinder assembly accuracy is a core factor determining the shock absorber's damping performance and service life. Among these, the assembly accuracy of the third cylinder and the working cylinder is a critical process node, requiring strict assurance of precise and stable positioning during the press-fitting process. In existing technologies, on the one hand, parts are prone to wobbling along the axis of the third cylinder during press-fitting, and commonly used adsorption or positioning structures are insufficient to provide stable constraint on the parts, leading to positioning deviations. On the other hand, the fixed pressure distribution mode of existing pressure heads cannot adapt to part machining errors, easily causing press-fitting misalignment, ultimately resulting in substandard interference fit accuracy between the third cylinder and the working cylinder, severely impacting the overall performance of the shock absorber. Furthermore, existing technologies largely follow the assembly approach of traditional hydraulic shock absorbers, without specific optimization for the press-fitting characteristics of the third cylinder and the working cylinder, making it difficult to meet the higher assembly accuracy requirements of modern shock absorbers. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the positioning deviation leads to insufficient assembly accuracy between the working cylinder and the third cylinder, thereby providing a shock absorber cylinder assembly device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A shock absorber cylinder assembly device includes: a lifting assembly comprising a lifting power component, a positioning block, and a lifting abutment component, wherein the lifting power component is capable of driving the positioning block to move in a vertical direction, the lifting abutment component is movably connected to the positioning block, and the lifting abutment component is capable of abutting against the third cylinder; The limiting component located on the upper side of the lifting component includes a pressure plate. The pressure plate is provided with a U-shaped groove. The inner wall of the U-shaped groove is also provided with a partially parallel stepped portion. The distance between the parallel stepped portions is greater than the outer diameter of the working cylinder, and the distance between the parallel stepped portions is less than the outer diameter of the third cylinder. A straightening assembly is located above the limiting assembly and is movable in a vertical direction. The straightening assembly includes a mounting frame, a sliding column, a sliding plate, a straightening block, and a straightening wheel. The sliding column is slidably connected to the mounting frame. The sliding plate is located below the mounting frame and is fixed to the lower end of the sliding column. The sliding plate moves downward and can abut against the limiting assembly. At least two straightening blocks are provided, and the two straightening blocks can be located on both sides of the working cylinder. A straightening wheel is provided on the opposite side of the two straightening blocks, and the straightening wheel can abut against the working cylinder. The press-fitting assembly includes a press-fitting power component and a press head. The press head is fixedly disposed on the lower side of the mounting frame. The press-fitting power component can drive the straightening assembly and the press head to move in the vertical direction. The press head abuts against the upper end of the working cylinder and drives the working cylinder to move downward and insert into the third cylinder.

[0005] Preferably, there are multiple centering wheels, which are arranged in a circular pattern with the axis of the working cylinder as the center. The axis of the centering wheel is parallel to the axis of the working cylinder, and the outer ring surface of the centering wheel can abut against the working cylinder.

[0006] Preferably, the straightening assembly further includes a plurality of straightening moving parts, each of which is disposed on the opposite side of each straightening block, and the straightening moving parts can drive the straightening block and the straightening wheel to move relative to or opposite to each other.

[0007] Preferably, the pressing assembly further includes a guide head, which is detachably disposed at the upper end of the working cylinder; the guide head includes a guide cone and a guide portion disposed on the upper side of the guide cone, the pressing head is recessed on the side facing the guide head to form a pressing cone groove and a pressing hole, the guide cone abuts against the cone surface of the pressing cone groove, the guide portion is inserted into the pressing hole, and the guide portion abuts against the inner wall of the pressing hole.

[0008] Preferably, the lifting assembly further includes a lifting positioning plate, which has positioning holes, and a portion of the third cylinder is inserted into the positioning holes; multiple lifting abutment members are provided and arranged in a circular interval with the positioning holes as the center.

[0009] Preferably, the shock absorber cylinder assembly device further includes a support platform and a guide rail disposed on the support platform, wherein the positioning block and the mounting bracket are slidably connected to the guide rail.

[0010] The present invention also provides a method for assembling a shock absorber cylinder, comprising the following steps: S1, insert the working cylinder into the third cylinder; S2, insert the third cylinder into the positioning hole, move the lifting abutment to abut against the third cylinder, and the working cylinder is located on the upper side of the third cylinder; S3, the lifting power component drives the third cylinder and the working cylinder to move upward simultaneously until the third cylinder abuts against the stepped part of the pressure plate, and the distance between the straightening wheels is adjusted according to the outer diameter of the working cylinder; S4, the pressing power component drives the straightening component and the pressing head to move downwards simultaneously until the straightening moving component abuts against the side of the pressing plate and the straightening wheel abuts against the working cylinder; S5, the pressing power component continues to drive the mounting bracket and the pressing head to move downwards, and the pressing head drives the working cylinder to move downwards and causes the working cylinder to insert into the third cylinder; S6, the pressing power component drives the pressing head and the straightening component to move upward and reset, the lifting power component drives the lifting positioning plate, the third cylinder and the working cylinder to move downward and reset, the lifting abutment component is moved, and the third cylinder and the working cylinder are removed.

[0011] Preferably, in step S5, the guide portion is inserted into the press-fit hole, and the guide portion abuts against the inner wall of the press-fit hole, and the guide cone portion abuts against the cone surface of the press-fit cone groove.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The shock absorber cylinder assembly device provided in the above technical solution uses the lifting power component in the lifting assembly to lift the positioning hole of the assembly containing the third cylinder and the working cylinder. After the assembly reaches the specified height, the position of the third cylinder is restricted by the stepped part of the pressure plate of the limiting assembly, so that only the working cylinder can pass through the U-shaped groove. During the pressing process, the pressing assembly drives the pressure head to press down, and at the same time, it drives the mounting bracket, sliding column, sliding plate, straightening block and straightening wheel of the straightening assembly to move downward. After the sliding plate carries the straightening block and straightening wheel to the height of the working cylinder, the straightening wheel limits the outer diameter of the working cylinder. The contact surface shape design of the pressure head and the guide head are designed to fit each other. The above structure ensures the high precision requirement of the working cylinder entering the third cylinder through various structures such as the straightening wheel of the straightening assembly, the pressure head and guide head in the pressing assembly and the positioning hole in the lifting assembly. Thus, the assembly formed after the working cylinder is installed into the third cylinder meets the customer's requirements in terms of precision. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 A schematic diagram of the overall assembly structure of the shock absorber cylinder assembly device provided by the present invention; Figure 2 This is a schematic diagram of the lifting component provided by the present invention; Figure 3 This is a schematic diagram of the structure of the limiting component provided by the present invention; Figure 4 This is a schematic diagram of the structure of the straightening component provided by the present invention; Figure 5 This is a schematic diagram of the assembly structure of the press-fitting component and the limiting component provided by the present invention; Figure 6 This is a schematic diagram of the pressure head provided by the present invention; Figure 7 This is a schematic diagram of the structure of the guide head provided by the present invention; Figure 8 This is a schematic diagram of the support platform provided by the present invention.

[0015] Explanation of reference numerals in the attached figures: 1. Lifting assembly; 11. Lifting power component; 12. Positioning block; 13. Lifting abutment component; 14. Lifting positioning plate; 141. Positioning hole; 2. Limiting component; 21. Pressure plate; 211. U-shaped groove; 212. Step section; 3. Straightening components; 31. Mounting bracket; 32. Sliding column; 33. Sliding plate; 34. Straightening block; 341. Straightening wheel; 35. Straightening moving parts; 4. Press-fitting assembly; 41. Press-fitting power component; 42. Press head; 421. Press-fitting conical groove; 422. Press-fitting hole; 43. Guide head; 431. Guide part; 432. Guide cone part; 5. Support platform; 51. Guide rail; 6. Working cylinder; 7. The third cylinder. Detailed Implementation

[0016] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0019] Please see Figures 1 to 8 This invention provides a shock absorber cylinder assembly device, including a lifting component 1, a limiting component 2, a straightening component 3, and a pressing component 4.

[0020] The lifting assembly 1 includes a lifting power component 11, a positioning block 12, and a lifting abutment component 13. The lifting power component 11 can drive the positioning block 12 to move vertically. The lifting abutment component 13 is movably connected to the positioning block 12 and can abut against the third cylinder 7. The limiting assembly 2 is located on the upper side of the lifting assembly 1 and includes a pressure plate 21. The pressure plate 21 is provided with a U-shaped groove 211. The inner wall of the U-shaped groove 211 is also provided with a partially parallel stepped portion 212. The distance between cylinders 12 is greater than the outer diameter of cylinder 6, and the distance between the parallel stepped portions 212 is less than the outer diameter of cylinder 7; the straightening assembly 3 is located above the limiting assembly 2 and can move vertically. The straightening assembly 3 includes a mounting frame 31, a sliding column 32, a sliding plate 33, a straightening block 34, and a straightening wheel 341. The sliding column 32 is slidably connected to the mounting frame 31, and the sliding plate 33 is located below the mounting frame 31 and is fixed to the lower end of the sliding column 32. 33 moves downward and can abut against the limiting component 2; there are two straightening blocks 34, and the two straightening blocks 34 can be located on both sides of the working cylinder 6. The two straightening blocks 34 are provided with straightening wheels 341 on opposite sides, and the straightening wheels 341 can abut against the working cylinder 6; the pressing component 4 includes a pressing power component 41 and a pressing head 42. The pressing head 42 is fixedly set on the lower side of the mounting frame 31. The pressing power component 41 can drive the straightening component 3 and the pressing head 42 to move in the vertical direction. The pressing head 42 abuts against the upper end of the working cylinder 6 and drives the working cylinder 6 to move downward and insert into the third cylinder 7; since the distance between the parallel stepped parts 212 is greater than the outer diameter of the working cylinder 6 and the distance between the parallel stepped parts 212 is less than the outer diameter of the third cylinder 7, the height position of the third cylinder 7 is limited when the lifting component 1 lifts to the step part 212, thereby preparing for the subsequent pressing head 42 to press down on the working cylinder 6, so that the working cylinder 6 enters the third cylinder 7 to complete the preparation work in terms of the height position of the third cylinder 7.

[0021] Four centering wheels 341 are arranged in a circular pattern around the axis of the working cylinder 6. The axis of the centering wheel 341 is parallel to the axis of the working cylinder 6, and the outer ring surface of the centering wheel 341 can abut against the working cylinder 6. Since the outer ring surface of the centering wheel 341 can abut against the working cylinder 6, the horizontal position of the upper vertical end of the working cylinder 6 is defined by the centering wheel 341, thereby supporting the upper vertical end of the working cylinder 6 and keeping the upper vertical end of the working cylinder 6 stable and preventing wobbling, thus ensuring the installation accuracy of the working cylinder 6.

[0022] The straightening assembly 3 also includes multiple straightening moving parts 35, each of which is disposed on the opposite side of each straightening block 34. The straightening moving parts 35 can drive the straightening block 34 and the straightening wheel 341 to move relative to or away from each other. Since each straightening moving part 35 is disposed on the opposite side of each straightening block 34, the straightening moving parts 35 can drive the straightening block 34 and the straightening wheel 341 to move relative to or away from each other, making the movement of the straightening block 34 and the straightening wheel 341 more efficient, thereby achieving the purpose of quickly clamping the upper vertical end of the working cylinder 6.

[0023] The pressing assembly 4 also includes a guide head 43, which is detachably mounted on the upper end of the working cylinder 6. The guide head 43 includes a guide cone 432 and a guide portion 431 disposed on the upper side of the guide cone 432. The pressing head 42 has a pressing cone groove 421 and a pressing hole 422 recessed on the side facing the guide head 43. The guide cone 432 abuts against the cone surface of the pressing cone groove 421, and the guide portion 431 is inserted into the pressing hole 422 and abuts against the inner wall of the pressing hole 422. Because the guide cone 432 abuts against the cone surface of the pressing cone groove 421, and the guide portion 431 is inserted into the pressing hole 422 and abuts against the inner wall of the pressing hole 422, the pressing head 42 can fit tightly with the guide head 43, thereby keeping the pressing head 42 and the guide head 43 stable and ensuring that no shaking occurs during the pressing process of the pressing head 42.

[0024] The lifting assembly 1 also includes a lifting positioning plate 14, which has a positioning hole 141, and a portion of the third cylinder 7 is inserted into the positioning hole 141. Multiple lifting abutment members 13 are provided and arranged in a circular interval around the positioning hole 141. Because the lifting positioning plate 14 has a positioning hole 141, and a portion of the third cylinder 7 is inserted into the positioning hole 141, and multiple lifting abutment members 13 are provided and arranged in a circular interval around the positioning hole 141, the lower end of the third cylinder 7 in the vertical direction is limited and kept stable by the positioning hole 141, thereby ensuring that the third cylinder 7 will not shake during the pressing process of the pressure head 42.

[0025] The shock absorber cylinder assembly device also includes a support platform 5 and a guide rail 51 set on the support platform 5. The positioning block 12 and the mounting bracket 31 are slidably connected to the guide rail 51. Because the positioning block 12, the mounting bracket 31 and the guide rail 51 are slidably connected, the working cylinder 6 and the third cylinder 7 can only move in the height direction, which further ensures that the working cylinder 6 is vertically and accurately inserted into the third cylinder 7.

[0026] A method for assembling a shock absorber cylinder includes the following steps: S1, inserting the working cylinder 6 into the third cylinder 7; S2, inserting the third cylinder 7 into the positioning hole 141, moving the lifting abutment member 13 to abut against the third cylinder 7, with the working cylinder 6 located above the third cylinder 7; S3, the lifting power member 11 drives the third cylinder 7 and the working cylinder 6 to move upwards simultaneously until the third cylinder 7 abuts against the stepped portion 212 of the pressure plate 21, adjusting the distance between the straightening wheels 341 according to the outer diameter of the working cylinder 6; S4, the pressing power member 41 drives the straightening assembly 3 and the pressure head 42 to move downwards simultaneously until the straightening moving member 35 abuts against the upper side of the pressure plate 21, and the straightening wheels 341 abut against the working cylinder 6; S5, the pressing power member 41 continues to drive the mounting bracket 31 and the pressure head 42 to move downwards. The pressure head 42 drives the working cylinder 6 to move downward and insert it into the third cylinder 7; S6, the pressing power component 41 drives the pressure head 42 and the straightening component 3 to move upward and reset, the lifting power component 11 drives the lifting positioning plate 14, the third cylinder 7 and the working cylinder 6 to move downward and reset, the lifting abutment component 13 is moved, and the third cylinder 7 and the working cylinder 6 are removed; since the lifting power component 11 drives the third cylinder 7 and the working cylinder 6 to move upward at the same time, until the third cylinder 7 abuts against the step portion 212 of the pressure plate 21, the distance between the straightening wheels 341 is adjusted according to the outer diameter of the working cylinder 6, so that the third cylinder 7 is completely positioned by the step portion 212 to remain stationary during the pressing process of the pressure head 42, thereby reducing the impact of other external factors on the assembly accuracy of the working cylinder 6.

[0027] In step S5, the guide part 431 is inserted into the pressing hole 422, and the guide part 431 abuts against the inner wall of the pressing hole 422, and the guide cone part 432 abuts against the cone surface of the pressing cone groove 421. Since the guide part 431 abuts against the inner wall of the pressing hole 422 and the guide cone part 432 abuts against the cone surface of the pressing cone groove 421, the pressing hole 422 and the guide part 431, and the guide cone part 432 and the pressing cone groove 421 remain relatively stationary when the pressing head 42 is pressed down, thereby ensuring that the working cylinder 6 is vertically and precisely inserted into the third cylinder 7.

[0028] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A shock absorber cylinder assembly device for press-fitting a working cylinder (6) into a third cylinder (7), wherein the working cylinder (6) is located on the upper side of the third cylinder (7), and a portion of the working cylinder (6) is inserted into the third cylinder (7), characterized in that, include: The lifting assembly (1) includes a lifting power component (11), a positioning block (12), and a lifting abutment component (13). The lifting power component (11) can drive the positioning block (12) to move in the vertical direction. The lifting abutment component (13) is movably connected to the positioning block (12) and can abut against the third cylinder (7). The limiting component (2) is located on the upper side of the lifting component (1) and includes a pressure plate (21). The pressure plate (21) is provided with a U-shaped groove (211). The inner wall of the U-shaped groove (211) is also provided with a partially parallel stepped portion (212). The distance between the parallel stepped portions (212) is greater than the outer diameter of the working cylinder (6), and the distance between the parallel stepped portions (212) is less than the outer diameter of the third cylinder (7). The straightening component (3) is located above the limiting component (2) and can move vertically. The straightening component (3) includes a mounting frame (31), a sliding column (32), a sliding plate (33), a straightening block (34), and a straightening wheel (341). The sliding column (32) is slidably connected to the mounting frame (31). The sliding plate (33) is located below the mounting frame (31) and is fixed to the lower end of the sliding column (32). The sliding plate (33) moves down and can abut against the limiting component (2). There are at least two straightening blocks (34), and the two straightening blocks (34) can be located on both sides of the working cylinder (6). The two straightening blocks (34) are provided with straightening wheels (341) on opposite sides. The straightening wheels (341) can abut against the working cylinder (6). The pressing assembly (4) includes a pressing power component (41) and a pressing head (42). The pressing head (42) is fixedly disposed on the lower side of the mounting bracket (31). The pressing power component (41) can drive the straightening assembly (3) and the pressing head (42) to move in the vertical direction. The pressing head (42) abuts against the upper end of the working cylinder (6) and drives the working cylinder (6) to move downward and insert into the third cylinder (7).

2. The shock absorber cylinder assembly device according to claim 1, characterized in that, The centering wheel (341) is provided in multiple ways and is arranged in a circular interval with the axis of the working cylinder (6) as the center. The axis of the centering wheel (341) is parallel to the axis of the working cylinder (6), and the outer ring surface of the centering wheel (341) can abut against the working cylinder (6).

3. The shock absorber cylinder assembly device according to claim 1, characterized in that, The straightening component (3) also includes a plurality of straightening moving parts (35), each of the straightening moving parts (35) being respectively disposed on the opposite side of each of the straightening blocks (34), and the straightening moving parts (35) being able to drive the straightening blocks (34) and the straightening wheels (341) to move relative to or opposite to each other.

4. The shock absorber cylinder assembly device according to claim 1, characterized in that, The press assembly (4) also includes a guide head (43), which is detachably mounted on the upper end of the working cylinder (6); The guide head (43) includes a guide cone (432) and a guide portion (431) disposed on the upper side of the guide cone (432). The pressure head (42) is recessed on the side of the guide head (43) to form a press-fit cone groove (421) and a press-fit hole (422). The guide cone (432) abuts against the cone surface of the press-fit cone groove (421). The guide portion (431) is inserted into the press-fit hole (422) and abuts against the inner wall of the press-fit hole (422).

5. The shock absorber cylinder assembly device according to claim 1, characterized in that, The lifting assembly (1) also includes a lifting positioning plate (14), which has a positioning hole (141) and part of the third cylinder (7) is inserted into the positioning hole (141); the lifting abutment (13) is provided in multiples and is arranged in a circular interval with the positioning hole (141) as the center.

6. The shock absorber cylinder assembly device according to any one of claims 1-5, characterized in that, The shock absorber cylinder assembly device also includes a support platform (5) and a guide rail (51) disposed on the support platform (5), wherein the positioning block (12) and the mounting bracket (31) are slidably connected to the guide rail (51).

7. A method for assembling a shock absorber cylinder, characterized in that, The shock absorber cylinder assembly device according to any one of claims 1-6 includes the following steps: S1, insert the working cylinder (6) into the third cylinder (7); S2, insert the third cylinder (7) into the positioning hole (141), move the lifting abutment (13) to abut against the third cylinder (7), and the working cylinder (6) is located on the upper side of the third cylinder (7); S3, the lifting power component (11) drives the third cylinder (7) and the working cylinder (6) to move upward simultaneously until the third cylinder (7) abuts against the step part (212) of the pressure plate (21), and the distance between the straightening wheels (341) is adjusted according to the outer diameter of the working cylinder (6); S4, the pressing power component (41) drives the straightening component (3) and the pressing head (42) to move downward simultaneously until the straightening moving component (35) abuts against the upper side of the pressing plate (21) and the straightening wheel (341) abuts against the working cylinder (6); S5, the pressing power component (41) continues to drive the mounting bracket (31) and the pressing head (42) to move downward, and the pressing head (42) drives the working cylinder (6) to move downward and causes the working cylinder (6) to insert into the third cylinder (7); S6, the pressing power component (41) drives the pressing head (42) and the straightening component (3) to move upward and reset, the lifting power component (11) drives the lifting positioning plate (14), the third cylinder (7) and the working cylinder (6) to move downward and reset, the lifting abutment component (13) is moved, and the third cylinder (7) and the working cylinder (6) are taken out.

8. The shock absorber cylinder assembly method according to claim 7, characterized in that, In step S5, the guide part (431) is inserted into the press hole (422), and the guide part (431) abuts against the inner wall of the press hole (422), and the guide cone part (432) abuts against the cone surface of the press cone groove (421).

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