Shock absorber stop ring spot welding electrode and welding mechanism

Abstract

The utility model relates to the technical field of shock absorbers, in particular to a shock absorber stop ring spot welding electrode and a welding mechanism. The shock absorber stop ring spot welding electrode comprises a welding head, a clamping part and a mounting part which are sequentially connected, the welding head is flat and is provided with an upper plane, a lower plane and an end welding plane, the upper plane is parallel to the lower plane, and the end welding plane is connected between the upper plane and the lower plane; the mounting part is used for being fixed to a welding arm, and the clamping part is used for being matched with a clamping tool so that the mounting part can be detached from the welding arm. The shock absorber stop ring welding mechanism comprises a welding frame, linear driving pieces and welding arms, the four linear driving pieces are evenly distributed on the welding frame in a circumferential mode, the welding arms and the linear driving pieces are arranged in a one-to-one correspondence mode, the welding arms are connected to the output ends of the linear driving pieces, and the shock absorber stop ring spot welding electrodes are installed on the welding arms respectively. Stable welding quality can be guaranteed, and welding consistency is improved.

Description

A shock absorber stop ring spot welding electrode and welding mechanism Technical Field

[0001] This utility model relates to the field of vibration damper technology, specifically to a vibration damper stop ring spot welding electrode and welding mechanism. Background Technology

[0002] The retaining ring on a shock absorber is typically welded to the piston rod, located between the piston and cylinder. The main function of the retaining ring is to limit the piston's stroke, prevent excessive piston movement, and avoid collisions between the piston and the cylinder or other internal parts, thus protecting the internal structure of the shock absorber. Additionally, when the piston reaches its extreme position, the retaining ring provides cushioning, reducing impact and extending the shock absorber's lifespan. Furthermore, the retaining ring assists in the function of seals (such as oil seals) to prevent oil leakage. The connection strength between the retaining ring and the piston rod, as well as the surface quality of the piston rod, directly affect the performance of the shock absorber.

[0003] Traditional spot welding of piston rod stop rings for vibration dampers uses conical electrodes. The small contact area at the tip of the conical electrode concentrates current and pressure during welding, leading to high localized heat and mechanical stress. This high-intensity concentration accelerates electrode material wear. Furthermore, the frequent contact and pressure applied by the electrode during spot welding results in significant mechanical friction between the conical electrode tip and the stop ring, exacerbating wear. Because conical electrodes wear quickly, they require periodic grinding to restore their shape and performance. However, in actual welding, the grinding frequency of the spot welding electrodes cannot be effectively controlled, making it difficult to consistently guarantee spot weld quality. This can easily lead to piston rod stop ring detachment, affecting the vibration damper's performance. Additionally, traditional spot welding of piston rod stop rings involves manual positioning. The poor clamping stability of the conical electrode results in more spatter during welding, creating burrs on the piston rod surface. These burrs require manual removal, which is time-consuming and labor-intensive, and there is a risk of missing burrs, further impacting the vibration damper's performance. Summary of the Invention

[0004] Therefore, the purpose of this utility model is to provide a spot welding electrode for a shock absorber stop ring, so as to solve the technical problem that the spot welding quality of traditional conical electrodes cannot be guaranteed stably, which easily affects the working performance of the shock absorber; the purpose of this utility model is also to provide a welding mechanism for a shock absorber stop ring, so as to realize automated spot welding and ensure the welding quality of the stop ring.

[0005] To solve the above problems, the present invention provides a spot welding electrode for a damper stop ring, which adopts the following technical solution:

[0006] A spot welding electrode for a damper stop ring includes a welding head, a clamping part, and a mounting part connected in sequence. The welding head is flat and has an upper plane, a lower plane, and an end welding plane. The upper plane and the lower plane are parallel, and the end welding plane is connected between the upper plane and the lower plane. The mounting part is used to fix it on a welding arm, and the clamping part is used to cooperate with a clamping tool to remove the mounting part from the welding arm.

[0007] The beneficial effects of spot welding electrodes for damper stop rings are as follows: The flat welding head of the electrode increases the welding contact area with the stop ring, resulting in a more uniform welding current distribution and lower current density per unit area. This avoids the problem of excessively high local current density caused by the small contact area of ​​traditional conical electrodes. The uniform current density reduces localized overheating and erosion, thus slowing down the wear rate of the welding surface at the electrode end. Simultaneously, the uniform current distribution reduces spatter, preventing it from adhering to the electrode surface and accelerating wear. The flat welding head distributes pressure on the stop ring over a larger contact area, resulting in more stable contact. Due to the more rational distribution of current and pressure, the wear area of ​​the welding head is more uniform, reducing the frequency of re-grinding in actual use and improving welding quality.

[0008] Furthermore, the welding head, clamping part, and mounting part are all integrally formed by a single mold.

[0009] Beneficial effects: The shock absorber stop ring spot welding electrode can be formed in one process by mold, which is more convenient to manufacture and suitable for mass production.

[0010] Furthermore, the welding head also includes an arcuate surface connected to both sides of the end welding plane, and the clamping part is cylindrical, with the arcuate surface being coplanar with the outer surface of the clamping part.

[0011] Beneficial effects: The welding head and clamping part have better integration and higher strength.

[0012] Furthermore, both the upper and lower planes are connected to the clamping part by a transitional reinforced inclined surface.

[0013] Beneficial effects: When using a transition reinforcement slope, stress concentration can be avoided, the stress distribution can be more uniform, and the bending and torsional resistance of the spot welding electrode can be improved.

[0014] Furthermore, the welding head, clamping part, and mounting part are all symmetrical structures, and their symmetrical planes coincide.

[0015] Beneficial effects: When a symmetrical structure is adopted, it can ensure that the current density and pressure distribution on both sides of the electrode are consistent during welding, resulting in uniform wear, reduced grinding frequency, and extended service life.

[0016] Furthermore, the clamping part has two clamping grooves symmetrically distributed about the symmetrical plane, and the bottom of the clamping grooves is parallel to the upper plane and the lower plane.

[0017] Beneficial effects: It is easy to combine with clamping tools, thereby facilitating the installation and removal of spot welding electrodes on the welding arm.

[0018] Furthermore, the welding head, clamping part, and mounting part are made of chromium zirconium copper.

[0019] Beneficial effects: Chromium-zirconium copper has high electrical conductivity, higher than that of ordinary copper alloys, ensuring efficient transmission of welding current; Chromium-zirconium copper has a high high-temperature hardness retention rate and anti-softening properties, as well as high hardness and anti-adhesion properties, further ensuring the service life of spot welding electrodes and welding stability.

[0020] Furthermore, the mounting section and clamping section are provided with coaxial and through liquid cooling holes.

[0021] Beneficial effects: When coolant is introduced into the liquid cooling hole, the weld head can be cooled, preventing failure due to excessive temperature and ensuring consistent weld quality.

[0022] The technical solution of the shock absorber stop ring welding mechanism of this utility model is as follows:

[0023] A vibration damper stop ring welding mechanism includes a welding frame, linear drive components, and welding arms. Four linear drive components are evenly distributed circumferentially on the welding frame. The welding arms are arranged in a one-to-one correspondence with the linear drive components and are connected to the output end of the linear drive components. Each welding arm is equipped with a vibration damper stop ring spot welding electrode. The vibration damper stop ring spot welding electrode includes a welding head, a clamping part, and a mounting part connected in sequence. The welding head is flat and has an upper plane, a lower plane, and an end welding plane. The upper plane and the lower plane are parallel, and the end welding plane is connected between the upper plane and the lower plane. The mounting part is used to fix it on the welding arm, and the clamping part is used to cooperate with a clamping tool to detach the mounting part from the welding arm.

[0024] The beneficial effects of the shock absorber stop ring welding mechanism are: the shock absorber stop ring welding mechanism can automatically adjust the distance and position between the spot welding electrode and the stop ring, realize four-point automated welding at one time, and improve welding efficiency; in addition, the spot welding electrode of the shock absorber stop ring adopts a flat welding head, which increases the welding contact area with the stop ring, reduces the wear rate, and the wear area is more uniform, reducing the frequency of grinding in actual use and making the welding quality more stable.

[0025] Furthermore, the installation height of the welding arm is adjustable.

[0026] Beneficial effects: It can adjust the welding height of the spot welding electrode of the shock absorber stop ring, realize spot welding of the stop ring at different positions, and improve the versatility of the shock absorber stop ring welding mechanism.

[0027] Furthermore, the welding head, clamping part, and mounting part are all integrally formed by a single mold.

[0028] Beneficial effects: The shock absorber stop ring spot welding electrode can be formed in one process by mold, which is more convenient to manufacture and suitable for mass production.

[0029] Furthermore, the welding head also includes an arcuate surface connected to both sides of the end welding plane, and the clamping part is cylindrical, with the arcuate surface being coplanar with the outer surface of the clamping part.

[0030] Beneficial effects: The welding head and clamping part have better integration and higher strength.

[0031] Furthermore, both the upper and lower planes are connected to the clamping part by a transitional reinforced inclined surface.

[0032] Beneficial effects: When using a transition reinforcement slope, stress concentration can be avoided, the stress distribution can be more uniform, and the bending and torsional resistance of the spot welding electrode can be improved.

[0033] Furthermore, the welding head, clamping part, and mounting part are all symmetrical structures, and their symmetrical planes coincide.

[0034] Beneficial effects: When a symmetrical structure is adopted, it can ensure that the current density and pressure distribution on both sides of the electrode are consistent during welding, resulting in uniform wear, reduced grinding frequency, and extended service life.

[0035] Furthermore, the clamping part has two clamping grooves symmetrically distributed about the symmetrical plane, and the bottom of the clamping grooves is parallel to the upper plane and the lower plane.

[0036] Beneficial effects: It is easy to combine with clamping tools, thereby facilitating the installation and removal of spot welding electrodes on the welding arm.

[0037] Furthermore, the welding head, clamping part, and mounting part are made of chromium zirconium copper.

[0038] Beneficial effects: Chromium-zirconium copper has high electrical conductivity, higher than that of ordinary copper alloys, ensuring efficient transmission of welding current; Chromium-zirconium copper has a high high-temperature hardness retention rate and anti-softening properties, as well as high hardness and anti-adhesion properties, further ensuring the service life of spot welding electrodes and welding stability.

[0039] Furthermore, the mounting section and clamping section are provided with coaxial and through liquid cooling holes.

[0040] Beneficial effects: When coolant is introduced into the liquid cooling hole, the weld head can be cooled, preventing failure due to excessive temperature and ensuring consistent weld quality. Attached Figure Description

[0041] Figure 1 is a three-dimensional structural schematic diagram of a spot welding electrode for a damper stop ring according to the present invention;

[0042] Figure 2 is a top view of Figure 1;

[0043] Figure 3 is a side view of Figure 1;

[0044] Figure 4 is a cross-sectional view AA of Figure 3;

[0045] Figure 5 is a three-dimensional structural schematic diagram of a shock absorber stop ring welding mechanism according to the present invention;

[0046] Figure 6 is a bottom view of Figure 5;

[0047] Figure 7 is a schematic diagram of the installation of spot welding electrodes;

[0048] Figure 8 is a cross-sectional view of the spot welding electrode and welding arm after installation.

[0049] Explanation of reference numerals in the attached figures:

[0050] 1. Welding head; 11. Upper plane; 12. Lower plane; 13. End welding plane; 14. Arc surface; 2. Clamping part; 21. Clamping groove; 22. Transition reinforcing slope; 3. Mounting part; 4. Liquid cooling hole; 5. Welding frame; 51. Cantilever; 52. Slide rail; 6. Servo electric cylinder; 61. Connecting block; 7. Welding arm; 71. Liquid passage hole; 72. Fixing block; 73. Liquid cooling channel; 8. Spot welding electrode; 9. Transition block; 91. Adjustment elongated hole; 10. Guide block. Detailed Implementation

[0051] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0052] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0053] An embodiment of the spot welding electrode for the damper stop ring provided by this utility model:

[0054] As shown in Figures 1, 2 and 3, the damper stop ring spot welding electrode 8 is integrally formed by mold processing, including an integral welding head 1, a clamping part 2 and a mounting part 3 connected in sequence.

[0055] In this embodiment, the damper stop ring spot welding electrode 8 is made entirely of chromium zirconium copper material, which has high conductivity, high temperature hardness retention rate, and anti-softening performance. The damper stop ring spot welding electrode 8 has a symmetrical structure, that is, the welding head 1, the clamping part 2, and the mounting part 3 are all symmetrical structures, and the planes of symmetry of the three coincide.

[0056] As shown in Figures 1 and 4, the welding head 1 is flat and has an upper plane 11, a lower plane 12, an end welding plane 13, and an arc surface 14. The upper plane 11 and the lower plane 12 are parallel, and the end welding plane 13 connects the upper plane 11 and the lower plane 12. There are two arc surfaces 14, which connect the upper plane 11, the lower plane 12, and the end welding plane 13. The welding head 1 conducts electricity mainly through the end welding plane 13.

[0057] The clamping part 2 is cylindrical. The head of the clamping part 2 is connected to both the upper plane 11 and the lower plane 12 via a transitional reinforcing slope 22. This transitional reinforcing slope 22 prevents stress concentration and improves the bending and torsional resistance of the entire damper stop ring spot welding electrode 8. The outer surface of the clamping part 2 is coplanar with the arc surface 14 of the welding head 1, resulting in better overall integrity. Two clamping grooves 21 are symmetrically distributed on the clamping part 2 about the aforementioned symmetrical plane. The bottom of the clamping grooves 21 is parallel to the upper plane 11 and the lower plane 12.

[0058] As shown in Figure 2, the mounting part 3 is frustum-shaped, with its outer diameter gradually decreasing from the end near the clamping part 2 to the end away from the clamping part 2. The mounting part 3 is used to insert into the welding arm 7 to fix the entire damper stop ring spot welding electrode 8. When the damper stop ring spot welding electrode 8 is severely worn and needs to be replaced, the mounting part 3 can be removed from the welding arm 7 by inserting the two clamping parts 2 of the clamping tool into the two clamping grooves 21 respectively.

[0059] As shown in Figure 4, the mounting part 3 and the clamping part 2 are provided with coaxial and through liquid cooling holes 4. By introducing coolant into the liquid cooling holes 4, the welding head 1 can be cooled to ensure the normal operation of the welding head 1.

[0060] The shock absorber stop ring spot welding electrode 8 of this invention adopts a flat welding head 1, which increases the welding contact area with the stop ring and makes the contact with the stop ring more stable. In actual welding process, the wear area of ​​the welding head 1 is more uniform and the wear rate is slower, reducing the frequency of grinding in actual use, resulting in more stable welding quality and improved welding consistency.

[0061] It should be noted that the material of the spot welding electrode 8 of the damper stop ring is not limited to chromium zirconium copper in this application, but can also be other copper-based materials, such as alumina copper, beryllium copper, etc.

[0062] In other embodiments, the damper stop ring spot welding electrode 8 may also adopt an asymmetrical structure, with only its welding head 1 adopting a symmetrical structure.

[0063] An embodiment of the shock absorber stop ring welding mechanism provided by this utility model:

[0064] As shown in Figures 5 and 6, the shock absorber stop ring welding mechanism includes a welding frame 5, linear drive components, welding arms 7, and spot welding electrodes 8. The welding frame 5 has four cantilever arms 51 evenly distributed circumferentially, and each cantilever arm 51 is fixed with a linear drive component, meaning the four linear drive components are evenly distributed circumferentially on the welding frame 5. The welding arms 7 are arranged in a one-to-one correspondence with the linear drive components, and there are also four welding arms 7, each connected to the output end of a linear drive component.

[0065] In this embodiment, the linear drive is a servo electric cylinder 6. Of course, in other embodiments, a pneumatic cylinder can also be used.

[0066] As shown in Figure 7, each welding arm 7 is connected to a fixing block 72. A connecting block 61 is located at the end of the linear drive component. A transition block 9 connects the connecting block 61 and the fixing block 72. A guide block 10 is connected to the top of the transition block 9, passing through the corresponding cantilever 51. The welding frame 5 is equipped with a slide rail 52 that guides and cooperates with the guide block 10. This ensures the straightness of the welding arm 7's movement when the linear drive component operates. Additionally, the transition block 9 has an adjusting elongated hole 91 extending vertically, and the fixing block 72 is fixed to the position of the adjusting elongated hole 91 by bolts. During actual installation, the installation height of the welding arm 7 can be changed by adjusting the elongated hole 91.

[0067] As shown in Figure 8, the welding arm 7 is provided with a liquid cooling channel 73, and the welding arm 7 is provided with a liquid passage hole 71 communicating with the liquid cooling channel 73. Each welding arm 7 is equipped with a spot welding electrode 8. The structure of the spot welding electrode 8 is the same as that in the embodiment of the spot welding electrode 8 of the shock absorber stop ring described above, and will not be described in detail here. During installation, the mounting part 3 of the spot welding electrode 8 is inserted into the welding arm 7 and sealed with the welding arm 7. At this time, the liquid cooling hole 4 in the spot welding electrode 8 communicates with the liquid cooling channel 73 in the welding arm 7. Coolant can be introduced into the liquid cooling hole 4 through the liquid passage hole 71 to cool the spot welding electrode 8 during the welding process.

[0068] The shock absorber stop ring welding mechanism of this utility model can realize the automated welding of the stop ring, and can spot weld four positions at one time, which has high welding efficiency and can also ensure welding quality.

[0069] Based on the above description in this specification, those skilled in the art will also understand that terms used, such as "upper," "lower," "inner," and "outer," which indicate orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not imply that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as a limitation on the present invention.

[0070] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A spot-welded electrode for a damper stop ring, characterized in that, The assembly includes a welding head, a clamping part, and a mounting part connected in sequence. The welding head is flat and has an upper plane, a lower plane, and an end welding plane. The upper plane and the lower plane are parallel, and the end welding plane is connected between the upper plane and the lower plane. The mounting part is used to fix it on the welding arm, and the clamping part is used to cooperate with a clamping tool to remove the mounting part from the welding arm.

2. The damper stop ring spot welding electrode according to claim 1, characterized in that, The welding head, clamping part, and mounting part are all integrally formed by a single mold.

3. A shock absorber check ring spot welding electrode according to claim 1, wherein The welding head also includes an arc surface connecting both sides of the end welding plane, and the clamping part is cylindrical, with the arc surface being coplanar with the outer side surface of the clamping part.

4. The damper stop ring spot welding electrode according to claim 3, characterized in that, Both the upper and lower planes are connected to the clamping part by a transitional reinforced inclined surface.

5. A spot welding electrode for a damper stop ring according to any one of claims 2-4, characterized in that, The welding head, clamping part and mounting part are all symmetrical structures, and their symmetrical planes coincide.

6. The damper stop ring spot welding electrode according to claim 5, characterized in that, The clamping part has two clamping grooves symmetrically distributed about the symmetrical plane, and the bottom of the clamping grooves is parallel to the upper plane and the lower plane.

7. A spot welding electrode for a damper stop ring according to any one of claims 1-4, characterized in that, The welding head, clamping part, and mounting part are made of chromium zirconium copper.

8. A spot welding electrode for a damper stop ring according to any one of claims 1-4, characterized in that, The mounting section and clamping section are equipped with coaxial and through liquid cooling holes.

9. A shock absorber check ring welding mechanism characterized by comprising: It includes a welding frame, a linear drive component, and welding arms. Four linear drive components are evenly distributed in a circle on the welding frame. The welding arms are arranged in a one-to-one correspondence with the linear drive components and are connected to the output end of the linear drive components. Each welding arm is equipped with a spot welding electrode for a damper stop ring as described in any one of claims 1-8.

10. The damper stop ring welding mechanism according to claim 9, characterized in that, The installation height of the welding arm is adjustable.

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