Automobile shock absorber spring disc welding tool
By designing welding fixtures for automotive shock absorber spring discs suitable for different oil reservoirs, the problems of high production costs and low line change efficiency caused by differences in vehicle models have been solved, achieving high efficiency, low cost, versatility of welding fixtures, and precision assurance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN NINGJIANG SHANCHUAN MACHINERY
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-14
Smart Images
Figure CN224488202U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive shock absorber manufacturing technology, specifically relating to a welding fixture for automotive shock absorber spring discs. Background Technology
[0002] The shock absorber is a core component of the vehicle's suspension system. It significantly improves ride comfort, handling stability, and driving safety by converting and dissipating the vibration energy generated during vehicle operation into heat energy. Most shock absorbers in vehicle suspension systems are hydraulic shock absorbers. Typically, the telescopic rod of the hydraulic shock absorber is connected to the vehicle body, and the oil reservoir of the hydraulic shock absorber is connected to the wheel frame. A spring disc is welded to the upper outer side of the oil reservoir, and a damping spring is mounted on the upper side of the spring disc, fitting around the outside of the hydraulic shock absorber. The lower end of the damping spring abuts against the spring disc, and the upper end abuts against a fixed pressure plate on the vehicle body. The hydraulic shock absorber and the damping spring work together to better achieve the suspension's damping function.
[0003] The structure of the spring disc is shown in the figure. It includes a sleeve 91 and a support ring plate 92 disposed on the outer side of the lower end of the sleeve 91. The sleeve 91 is mainly used to weld and fix the entire spring disc to the oil reservoir of the shock absorber. The support ring plate 92 is used to support the shock absorber spring and limit its axial movement on the oil reservoir. To better support the shock absorber spring and enable it to move axially and retract along the shock absorber, ensuring the safety and reliability of vehicle operation, the shape of the support surface on the support ring plate 92 is adapted to the lower end of the shock absorber spring. That is, the support surface on the support ring plate 92 has a spiral surface structure that is inclined upward along its circumference. The upper and lower ends of the spiral surface structure are connected by an inclined surface to form an annular support surface. The bottom surface of the support ring plate 92 has the same structure as the upper support surface. The upper and lower ends of the bottom surface of the support ring plate 92 are connected by a sealing inclined surface 94 to form an annular surface. The support ring plate 92 is provided with three axial through holes 93 that are formed during its processing. The three axial through holes 93 are evenly distributed along the circumference of the support ring plate 92.
[0004] If the helical lift of the spring disc on the shock absorber is not up to standard, it will change the contact point between the shock absorber spring and the spring disc, resulting in abnormal noises and changes in ride comfort. If the deflection angle of the spring disc does not meet the requirements of the product drawing, it will increase the lateral force on the shock absorber after installation, causing abnormal noises and significantly reducing the service life of the shock absorber. Therefore, the welding precision of the spring disc on the oil reservoir is particularly important. To ensure the welding precision of the spring disc on the oil reservoir, an oil reservoir positioning fixture is generally used to position the oil reservoir. The oil reservoir positioning fixture is fixedly equipped with a spring disc positioning fixture to ensure that the helical lift and deflection angle of the spring disc meet the design requirements of the shock absorber.
[0005] Currently, due to differences in vehicle models and suspension layout space, the connection methods between the shock absorber's reservoir and the wheel frame vary, as do the connecting components on the reservoir for connecting to the wheel frame. The reservoirs of hydraulic shock absorbers with welded spring discs mainly include three types: lower fork reservoirs, connecting ring reservoirs, and clamp reservoirs. The structure of the lower fork reservoir, as shown in the figure, includes a reservoir body 81, a connecting rod 82 welded to the lower end of the reservoir body 81, a U-shaped connector 83 welded to the lower end of the connecting rod, and a spring disc fitted and welded to the upper part of the reservoir body 81. The U-shaped connector 83 has a downward-facing opening and coaxially arranged mounting through holes 84 on its two side walls. The structure of the connecting ring reservoir, as shown in the figure, includes a reservoir body 81, a connecting ring 85 welded to the lower end of the reservoir body 81, and a spring disc fitted and welded to the upper part of the reservoir body 81. The axis of the connecting ring 85 is perpendicular to the axis of the reservoir body 81. The structure of the ferrule-type oil reservoir is shown in the figure. It includes an oil reservoir body 81, an open retaining ring 86 welded to the lower outer side of the oil reservoir body 81, and a spring disc welded to the upper part of the oil reservoir body 81. The lower end face opposite the opening of the open retaining ring 86 is provided with a mounting protrusion 87. The outer diameter of the oil reservoir body 81 on the above-mentioned oil reservoirs is the same. After the connecting rod 82, U-shaped connector 83, connecting ring 85, and open retaining ring 86 are welded to the oil reservoir body 81, the spring disc is then welded to the oil reservoir body 81.
[0006] Because the three types of oil reservoirs have different structures, the positioning fixtures used when welding the spring discs also differ. This necessitates the design and manufacture of positioning fixtures suitable for oil reservoirs with different structures, as well as spring disc positioning fixtures mounted on these fixtures. The positioning fixtures for each oil reservoir vary significantly in size, making processing inconvenient and wasting production costs. During production line switchovers, the positioning fixtures for the oil reservoirs must be completely disassembled and replaced, wasting manpower. Furthermore, the current positioning of the spring disc relies solely on the positioning through-hole 93 and sleeve 91, making it easy for operators to place the spring disc incorrectly, affecting product accuracy and quality, wasting materials and manpower, and reducing production efficiency. Utility Model Content
[0007] The technical problem to be solved by this utility model is to provide a universal welding fixture for automotive shock absorber spring discs, which saves costs and improves the line change efficiency of welding positioning fixtures for different types of oil reservoirs and spring discs.
[0008] The technical solution adopted by this utility model to solve the technical problem is: a welding fixture for automotive shock absorber spring discs, including a base and a vertically mounted stand on the top surface of the base. One side of the stand is provided with a limiting plate parallel to the top surface of the base, a driving component spaced below the limiting plate, and a positioning block located at the movable end of the driving component. The limiting plate is provided with a U-shaped limiting groove with its opening facing away from the stand, and the U-shaped limiting groove penetrates the limiting plate vertically. The bottom wall of the U-shaped limiting groove has an arc surface structure, and its corresponding central angle is 180°. The U-shaped limiting groove is used to limit the oil reservoir body in the horizontal direction; the top surface of the limiting plate is vertically provided with a positioning pin adapted to the axial through hole of the spring plate and a support member for supporting the spring plate, the top surface of the support member is adapted to the shape and structure of the bottom surface of the support ring plate of the spring plate; when the driving member drives the positioning block to the pressing position, the projection of the positioning block on the horizontal plane is located inside the projection of the U-shaped limiting groove on the horizontal plane, and a radial positioning space for accommodating the oil reservoir body is formed between the positioning block and the bottom wall of the U-shaped limiting groove;
[0009] The base is detachably connected to a first positioning component, a second positioning component, or a third positioning component located below the positioning block.
[0010] The first positioning component includes a first adapter seat detachably connected to the base and a limiting protrusion disposed on the first adapter seat. The limiting protrusion has a first insertion hole extending horizontally, and a first pin is inserted into the first insertion hole. The first insertion hole has the same diameter as the mounting through hole on the U-shaped connector. When the first positioning component is installed on the base, the two sidewalls of the limiting protrusion located at both ends of the first insertion hole respectively fit against the two sidewalls of the U-shaped groove of the U-shaped connector, and the first pin is coaxially inserted into the first insertion hole and the mounting through hole on the U-shaped connector.
[0011] The second positioning component includes a second adapter seat that can be detachably connected to the base and a second connecting part disposed on the top surface of the second adapter seat. The second connecting part is used to position the connecting ring on the oil reservoir of the connecting ring.
[0012] The third positioning component includes a third adapter seat that can be detachably connected to the base and a third connecting part disposed on the top surface of the third adapter seat. The third connecting part is used to position the open retaining ring on the oil reservoir of the support sleeve.
[0013] Furthermore, the second connecting part includes a limiting plate vertically disposed on the top surface of the second adapter seat. Each limiting plate is provided with a second insertion hole that extends horizontally, and a second pin that slides axially into the second insertion hole is inserted therein. There are two limiting plates, which are parallel to each other and spaced apart axially along the second insertion hole. A connecting ring limiting space is formed between the two limiting plates for axially positioning the connecting ring.
[0014] Furthermore, the third connecting part includes a positioning sleeve vertically disposed on the top surface of the third adapter seat. The upper end surface of the positioning sleeve is provided with a positioning groove that matches the shape and size of the mounting protrusion below the open retaining ring. The inner cavity of the positioning sleeve is used to radially position the oil reservoir body. When the third adapter seat is installed on the base, the positioning sleeve is coaxially arranged with the arc bottom wall of the U-shaped limiting groove.
[0015] Furthermore, a magnetic suction hole is provided at the center of the bottom wall of the U-shaped limiting groove on the limiting plate, and a magnet is provided in the magnetic suction hole. The magnet has a cylindrical structure and is completely located inside the magnetic suction hole.
[0016] Furthermore, the support member includes at least three support columns vertically disposed on the top surface of the limiting plate. The at least three support columns are evenly distributed along the outer periphery of the U-shaped limiting groove. The height difference between the top surfaces of two adjacent support columns is adapted to the spiral lift height of the bottom surface of the support ring plate on the spring disc.
[0017] The limiting plate is provided with a threaded through hole running vertically, and the lower part of the support column is located in the threaded through hole and is threadedly connected to the limiting plate.
[0018] Furthermore, it also includes a foolproof post vertically disposed on the limiting plate, wherein the top surface of the foolproof post is higher than the top surface of all the support posts.
[0019] After the spring disc is clamped and positioned, the anti-fooling posts are spaced below the support ring plate and located on one side of the upper end of the sealing slope 94 on the bottom surface of the support ring plate. The projections of the anti-fooling posts on the horizontal plane intersect with the projections of the support ring plate on the horizontal plane.
[0020] Furthermore, the driving component is a rotary cylinder, and the positioning block is a pressure rod structure perpendicular to the rotating shaft of the rotary cylinder, with one end of the pressure rod structure protruding from the side wall of the rotating shaft of the rotary cylinder.
[0021] When the positioning block is in its initial position away from the pressing station, the projection of the positioning block on the horizontal plane is located outside the projection of the U-shaped limiting groove on the horizontal plane.
[0022] Furthermore, the first adapter is an adapter plate, and the limiting protrusion is vertically disposed above the adapter plate;
[0023] The second adapter includes an adapter plate and a first lifting column vertically disposed above the adapter plate. The upper end of the first lifting column is provided with a first support plate perpendicular to it, and the second connecting part is disposed on the first support plate.
[0024] The third adapter includes an adapter plate and a second lifting column vertically disposed above the adapter plate. The upper end of the second lifting column is provided with a second support plate perpendicular to it, and the third connecting part is disposed on the first support plate.
[0025] The first adapter, the second adapter, or the third adapter can all be detachably connected to the base via the adapter plate.
[0026] Furthermore, the first positioning component also includes a pin mounting plate vertically disposed on the first adapter seat. The pin mounting plate is provided with a support hole that is coaxially arranged with the same diameter as the first insertion hole. The first pin is inserted into the support hole and the two are axially slidingly engaged. The pin mounting plate and the limiting protrusion are arranged axially spaced along the first insertion hole, and the distance between the pin mounting plate and the limiting protrusion is greater than the wall thickness of the U-shaped connector.
[0027] The first pin has a first strip-shaped limiting groove on its side wall, the length of which is arranged along its axial direction. Both ends of the first strip-shaped limiting groove are spaced apart from the end face of the first pin. The pin mounting plate is threaded with a first limiting screw perpendicular to the axis of the support hole. The end of the first limiting screw away from the nut is located in the support hole and inserted into the first strip-shaped limiting groove. The first pin can slide along the axis of the support hole.
[0028] Furthermore, the outer wall of the second pin is provided with a second strip-shaped limiting groove with its length arranged along its axial direction, and both ends of the second strip-shaped limiting groove are spaced apart from the end face of the second pin; a second limiting screw perpendicular to the axis of the second insertion hole is threadedly connected to the limiting plate, and the end of the second limiting screw away from the nut is located in the second insertion hole and inserted into the second strip-shaped limiting groove, so that the first pin can slide along the axial direction of the second insertion hole.
[0029] Compared with the prior art, the beneficial effects of this utility model are: it provides a welding fixture for automotive shock absorber spring discs. This utility model is equipped with a first positioning component, a second positioning component, and a third positioning component that are detachably mounted on the base according to the lower end structure of different oil reservoirs. By switching the first positioning component, the second positioning component, and the third positioning component mounted on the base, the welding positioning fixture of this utility model can be used to clamp different types of shock absorber oil reservoirs. It has strong versatility and does not require the entire fixture to be disassembled and replaced, thus improving the efficiency of the welding fixture changeover. It also eliminates the need to pre-manufacture multiple sets of welding positioning fixtures with completely different structures, saving manpower and the production and manufacturing costs of welding fixtures. Attached Figure Description
[0030] Figure 1(a) is a schematic diagram of the main structure of the spring disc;
[0031] Figure 1(b) is a schematic diagram of the spring disc from below;
[0032] Figure 1(c) is a schematic diagram of the axial cross-sectional structure of the spring disc;
[0033] Figure 2(a) is a schematic diagram of the main structure of the lower fork oil reservoir;
[0034] Figure 2(b) is a schematic diagram of the axial structure of the lower fork oil reservoir;
[0035] Figure 3(a) is a schematic diagram of the main structure of the connecting ring oil reservoir;
[0036] Figure 3(b) is a schematic diagram of the axial structure of the connecting ring oil reservoir;
[0037] Figure 4(a) is a schematic diagram of the left-side structure of the ferrule oil reservoir;
[0038] Figure 4(b) is a schematic diagram of the main structure of the ferrule oil reservoir;
[0039] Figure 4(c) is a schematic diagram of the right-side structure of the ferrule oil reservoir;
[0040] Figure 5 This is a structural diagram of the welding fixture when the first positioning component, the second positioning component, and the third positioning component are not installed;
[0041] Figure 6 This is a structural schematic diagram of the first positioning component;
[0042] Figure 7 This is a schematic diagram of the structure of the second positioning component;
[0043] Figure 8 This is a schematic diagram of the third positioning component structure.
[0044] Figure 9 This is a schematic diagram of the isometric structure of the welding fixture on which the first positioning component is mounted on the base;
[0045] Figure 10 yes Figure 9 A schematic diagram of the axial structure of the welding fixture when clamping the lower fork oil reservoir and spring disc;
[0046] Figure 11 yes Figure 9 Front view structural diagram;
[0047] Figure 12 It is along Figure 11 Schematic diagram of the cross-sectional structure of the mid-section line of sight AA;
[0048] Figure 13 This is a schematic diagram of the isometric structure of the welding fixture on which the second positioning component is mounted on the base;
[0049] Figure 14 yes Figure 13 A schematic diagram of the axial structure when the connecting ring oil reservoir and spring disc are clamped on the welding fixture;
[0050] Figure 15 yes Figure 13 A schematic diagram of the left-side view structure;
[0051] Figure 16 It is along Figure 15 Schematic diagram of the sectional structure of the mid-section line of sight BB;
[0052] Figure 17 A schematic diagram of the isometric structure of the welding fixture on which the third positioning component is mounted on the base;
[0053] Figure 18 yes Figure 17 A schematic diagram of the shaft side structure when a ferrule oil reservoir and a spring disc are clamped on the welding fixture;
[0054] Reference numerals: 1-Base; 2-Upright frame; 3-Limiting plate; 31-U-shaped limiting groove; 32-Magnet; 33-Positioning pin; 34-Support column; 35-Anti-foolproof column; 41-Drive component; 42-Positioning pressure block; 5-First positioning assembly; 51-First adapter; 511-First heightening column; 512-First support plate; 52-Limiting protrusion; 53-First insertion hole; 54-First pin; 541-First strip-shaped limiting groove; 55-Pin mounting plate; 56-First limiting screw; 567-Adapter plate; 57-Pre-positioning plate; 6-Second positioning assembly; 6 1-Second adapter; 62-Limiting plate; 63-Second insertion hole; 64-Second pin; 641-Second strip-shaped limiting groove; 66-Second limiting screw; 7-Third positioning assembly; 71-Third adapter; 711-Second raising post; 712-Second support plate; 72-Positioning sleeve; 73-Positioning groove; 81-Oil reservoir body; 82-Connecting rod; 83-U-shaped connector; 84-Mounting through hole; 85-Connecting ring; 86-Open retaining ring; 87-Mounting protrusion; 91-Sleeve; 92-Supporting ring plate; 93-Axial through hole; 94-Sealing bevel. Detailed Implementation
[0055] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0056] As attached Figure 5-18As shown, a welding fixture for an automotive shock absorber spring disc includes a base 1 and a vertically mounted stand 2 on the top surface of the base 1. One side of the stand 2 is provided with a limiting plate 3 parallel to the top surface of the base 1, a driving component 41 spaced below the limiting plate 3, and a positioning block 42 located at the movable end of the driving component 41. The limiting plate 3 has a U-shaped limiting groove 31 with its opening facing away from the stand 2, and the U-shaped limiting groove 31 penetrates the limiting plate 3 vertically. The bottom wall of the U-shaped limiting groove 31 has an arc-shaped structure with a corresponding central angle of 180°. The U-shaped limiting groove 31 is used to hold the oil reservoir body 81 in... The upper limit is set in the horizontal direction; the top surface of the limiting plate 3 is vertically provided with a positioning pin 33 that matches the axial through hole 93 of the spring plate and a support member for supporting the spring plate. The top surface of the support member matches the shape and structure of the bottom surface of the support ring plate 92 of the spring plate. When the driving member 41 drives the positioning block 42 to the pressing position, the projection of the positioning block 42 on the horizontal plane is located inside the projection of the U-shaped limiting groove 31 on the horizontal plane. A radial positioning space for accommodating the oil reservoir body 81 is formed between the positioning block 42 and the bottom wall of the U-shaped limiting groove 31. The base 1 is detachably connected to the positioning block 4. The first positioning component 5, the second positioning component 6, or the third positioning component 7 below the base 1; the first positioning component 5 includes a first adapter 51 detachably connected to the base 1 and a limiting protrusion 52 disposed on the first adapter 51, the limiting protrusion 52 having a first insertion hole 53 extending horizontally, the first insertion hole 53 having a first pin 54 inserted into it; the first insertion hole 53 having the same diameter as the mounting through hole 84 on the U-shaped connector 83; when the first positioning component 5 is installed on the base 1, the two sidewalls of the limiting protrusion 52 located at both ends of the first insertion hole 53 respectively engage with the U-shaped connector 83. The two side walls of the groove fit together, and the first pin 54 is coaxially inserted into the first insertion hole 53 and the mounting through hole 84 on the U-shaped connector 83; the second positioning component 6 includes a second adapter 61 that can be detachably connected to the base 1 and a second connecting part disposed on the top surface of the second adapter 61, the second connecting part being used to position the connecting ring 85 on the oil reservoir of the mounting ring; the third positioning component 7 includes a third adapter 71 that can be detachably connected to the base 1 and a third connecting part disposed on the top surface of the third adapter 71, the third connecting part being used to position the open retaining ring 86 on the oil reservoir of the support sleeve.
[0057] The matching shape and size of the top surface of the support member with the bottom surface of the support ring plate 92 means that the bottom surface of the support ring plate 92 and the top surface of the support member can fit together completely. The matching of the axial through hole 93 and the locating pin 33 means that they can be fitted with a clearance. For ease of explanation, let the axial direction of the first insertion hole 53 be the X direction, the horizontal direction perpendicular to the X direction be the Y direction, and the directions perpendicular to both the X and Y directions be the up and down directions. That is, the depth direction of the U-shaped limiting groove 31 on the limiting plate 3 is arranged along the Y direction, and the width direction of the U-shaped limiting groove 31 is arranged along the X direction.
[0058] When welding the spring disc onto the lower fork oil reservoir, the base 1 is fixedly mounted on the welding table. The first positioning component 5 is detachably mounted on the base 1 via the first adapter 51. The positioning block 42 moves to a position away from the pressing station. First, the upper part of the oil reservoir body 81 on the lower fork oil reservoir is snapped into the U-shaped limiting groove 31 on the limiting plate 3. The two side walls of the U-shaped limiting groove 31 cooperate with each other to position the upper part of the oil reservoir body 1 in the X direction. Adjust the position of the lower fork oil reservoir so that the limiting protrusion 52 is inserted into the U-shaped groove of the U-shaped connector 83, and the mounting through hole 84 is coaxial with the first insertion hole 53. The first pin 54 is inserted into the first insertion hole 53 and the mounting through hole 84 to connect the U-shaped connector 83 with the limiting protrusion 52. At this time, the top surface of the limiting protrusion 52 is in contact with the bottom wall of the U-shaped groove on the U-shaped connector 83, and the limiting protrusion 52 is positioned in the X direction. The two sidewalls in the direction of the oil reservoir body 81 abut against the sidewalls of the U-shaped groove on the U-shaped connector 83, and the outer sidewall of the upper part of the oil reservoir body 81 fits against the bottom wall of the U-shaped limiting groove 31. The U-shaped connector 83, the limiting protrusion 52, and the first pin 54 cooperate to position the lower end of the lower fork oil reservoir body 1 in the horizontal and vertical directions. Subsequently, the driving member 41 drives the positioning pressure block 42 to move to the pressing position. The positioning pressure block 42 and the bottom wall of the U-shaped limiting groove 31 cooperate to clamp the upper part of the oil reservoir body 1 in the Y direction. The positioning pressure block 42 and the U-shaped limiting groove 31 cooperate to position the upper part of the lower fork oil reservoir body 1 in the horizontal direction. That is, the first positioning component 5 positions the lower end of the lower fork oil reservoir body 1, and the positioning pressure block 42 and the U-shaped limiting groove 31 cooperate to position the upper part of the lower fork oil reservoir body 1. The clamping and positioning of the lower fork oil reservoir body 51 is completed. When clamping the spring disc, the spring disc is fitted from top to bottom onto the outside of the oil reservoir body 81, with the positioning pin 33 inserted into the axial through hole 93 on the spring disc. The bottom surface of the support ring plate 92 on the spring disc is in contact with the top surface of the support member, thus completing the clamping of the spring disc. The support member supports the spring disc upward, positioning it axially in the oil reservoir body 81, while also preventing incorrect circumferential installation of the spring disc and ensuring the correct installation angle. The positioning pin 33 is used to position the spring disc circumferentially upward in the oil reservoir body 81, preventing the spring disc from rotating during welding. Finally, the spring disc is welded to the oil reservoir body 81, completing the welding of the spring disc on the lower fork oil reservoir.
[0059] When the product on the production line is a connecting ring oil reservoir, the second positioning component 6 is detachably installed on the base 1 via the second adapter 61. Then, similarly, the upper part of the oil reservoir body 81 on the connecting ring oil reservoir is installed in the U-shaped limiting groove 31 on the limiting plate 3. The position of the lower fork oil reservoir is adjusted so that the connecting ring 85 at the lower end of the connecting ring oil reservoir is positioned on the second connecting part of the second positioning component 6. Subsequently, the driving component 41 drives the positioning pressure block 42 to move to the pressing position, where it cooperates with the U-shaped limiting groove 3 to position the upper part of the connecting ring oil reservoir horizontally. The second positioning component 6 positions the lower end of the connecting ring oil reservoir, completing the clamping and positioning of the connecting ring oil reservoir. Then, the positioning pin 33 and the support component are used to support and position the spring disc on the outside of the oil reservoir body 81 of the connecting ring oil reservoir, and the spring disc is welded to the connecting ring oil reservoir.
[0060] When the product on the production line is a ferrule oil reservoir, the third positioning component 7 is installed on the base 1 via the third adapter 71. Then, the upper part of the oil reservoir body 81 is installed in the U-shaped limiting groove 31 on the limiting plate 3. The position of the ferrule oil reservoir is adjusted so that the mounting protrusion 87 and the oil reservoir body 81 below it are positioned on the third connecting part of the third positioning component 7. Subsequently, the driving component 41 drives the positioning pressure block 42 to the pressing position. The positioning pressure block 42 cooperates with the U-shaped limiting groove 31 to position the upper part of the ferrule oil reservoir horizontally, and the third positioning component 7 positions the lower part of the ferrule oil reservoir. The clamping and positioning of the ferrule oil reservoir is completed. Then, the spring disc is positioned using the positioning pin 33 and the support component, and the spring disc is sleeved and positioned on the outside of the oil reservoir body 81 of the ferrule oil reservoir. The spring disc is then welded to the ferrule oil reservoir.
[0061] Therefore, this utility model provides a first positioning component 5, a second positioning component 6, and a third positioning component 7 that are detachably mounted on the base 1 according to the lower end structure of different oil reservoirs. By switching the first positioning component 5, the second positioning component 6, and the third positioning component 7 mounted on the base 1, the welding positioning fixture of this utility model can be used to clamp different types of shock absorber oil reservoirs. It has strong versatility and does not require the entire fixture to be disassembled and replaced, thus improving the efficiency of the welding fixture changeover. It also eliminates the need to pre-manufacture multiple sets of welding positioning fixtures with completely different structures, saving manpower and the production and manufacturing costs of welding fixtures.
[0062] Specifically, the second connecting part includes a limiting plate 62 vertically disposed on the top surface of the second adapter 61. Each limiting plate 62 is provided with a second insertion hole 63 extending horizontally, and a second pin 64 is inserted into the second insertion hole 63 and slidably engaged therewith. There are two limiting plates 62, which are parallel to each other and spaced apart axially along the second insertion hole 63. A connecting ring limiting space is formed between the two limiting plates 62 for axially positioning the connecting ring 85. When clamping and positioning the lower end of the connecting ring oil reservoir, the connecting ring 85 is engaged in the connecting ring limiting space to achieve axial positioning. The connecting ring 85 is coaxial with the second insertion hole 63. The second pin 64 is inserted into the connecting ring 85 and the second insertion hole 63 to connect the connecting ring 85 to the limiting plate 85, thereby connecting the lower end of the connecting ring oil reservoir to the second positioning component 6, completing the clamping and positioning of the lower end of the connecting ring oil reservoir.
[0063] Specifically, the third connecting part includes a positioning sleeve 72 vertically disposed on the top surface of the third adapter 71. The upper end surface of the positioning sleeve 72 is provided with a positioning groove 73 that matches the shape and size of the mounting protrusion 87 below the open retaining ring 86. The inner cavity of the positioning sleeve 72 is used to radially position the oil reservoir body 81. When the third adapter 71 is installed on the base 1, the positioning sleeve 72 is coaxially arranged with the arc-shaped bottom wall of the U-shaped limiting groove 31. When clamping the positioning retaining oil reservoir, the oil reservoir body 81 at the lower part of the open retaining ring 86 is inserted into the positioning sleeve 72 to horizontally position the lower end of the retaining oil reservoir. The mounting protrusion 87 is inserted into the positioning groove 73 to prevent the retaining oil reservoir from rotating. The bottom surface of the open retaining ring 86 abuts against the upper end surface of the positioning sleeve 72 to support and position the retaining oil reservoir in the vertical direction.
[0064] Considering that the first pin 54 is easily lost after being pulled out when using the first positioning component 5, preferably, the first positioning component 5 further includes a pin mounting plate 55 vertically disposed on the first adapter 51. The pin mounting plate 55 is provided with a support hole with the same diameter as the first insertion hole 53 and arranged coaxially. The first pin 54 is inserted into the support hole and the two slide axially. The pin mounting plate 55 and the limiting protrusion 52 are arranged axially spaced along the first insertion hole 53. The spacing between the limiting protrusions 52 is greater than the wall thickness of the U-shaped connector; the side wall of the first pin 54 is provided with a first strip-shaped limiting groove 541 with its length arranged along its axial direction, and both ends of the first strip-shaped limiting groove 541 are spaced apart from the end face of the first pin 54; a first limiting screw 56 perpendicular to the axis of the support hole 551 is threaded onto the pin mounting plate 55, and the end of the first limiting screw 56 away from the nut is inserted into the first strip-shaped limiting groove 541, allowing the first pin 54 to slide axially along the support hole. To ensure smooth sliding of the first pin 54, the first limiting screw 56 is spaced apart from the groove wall of the first strip-shaped limiting groove 541 on the first pin 54. By rotating the first limiting screw 56, it can be made to abut against the bottom wall of the first strip-shaped limiting groove 541 to axially position the first pin 54. After the first pin 54 is pulled out of the first insertion hole 53 by a certain distance, the first limiting screw 56 abuts against the side wall at the end of the strip groove 541, preventing the first pin 54 from falling out of the support hole 551 and being lost, thereby improving the insertion and removal efficiency of the first pin 54.
[0065] Preferably, the first adapter 51 is also vertically provided with a pre-positioning plate 57; when the first positioning component 51 is detachably connected to the U-shaped connector 83 at the lower end of the lower fork reservoir on the base 1, the pre-positioning plate 51 is located on the side close to the bottom wall of the U-shaped limiting groove 31, and the U-shaped side of the U-shaped connector 83 abuts against the pre-positioning plate 51. When adjusting the lower fork reservoir, the U-shaped side wall of the U-shaped connector 83 can be directly abutted against the pre-positioning plate 51. At this time, the mounting through hole 84 on the U-shaped connector 83 is coaxial with the first insertion hole 53.
[0066] Considering that the second pin 64 is easily dropped or lost after being pulled out when using the second positioning component 6, preferably, the outer wall of the second pin 64 is provided with a second strip-shaped limiting groove 641 with its length arranged along its axial direction, and both ends of the second strip-shaped limiting groove 641 are spaced apart from the end face of the second pin 64; the limiting plate 62 is threadedly connected with a second limiting screw 66 perpendicular to the axis of the second insertion hole 63, and the end of the second limiting screw 66 away from the nut is located in the second insertion hole 63 and inserted into the second strip-shaped limiting groove 641, and the first pin 54 can slide along the axial direction of the second insertion hole 63.
[0067] The base 1 is used to integrate and connect the entire tooling, and also to fix the entire tooling on the workbench. The base 1 can be a frame structure welded from steel pipes, angle steel, steel plates, etc., or it can be a steel plate structure. The upright 2 is used to install the limiting plate 3 and the driving component 41 and to elevate them to a height suitable for the oil reservoir. The upright 2 can be composed of multiple columns or processed from a single piece of plate. Preferably, both the base 1 and the upright 2 are steel plate structures, which are simple in structure and easy to process.
[0068] The limiting plate 3 is used to install the positioning pin 33 and the support component. The U-shaped limiting groove 31 on the limiting plate 3 is used to pre-position the oil reservoir, facilitating adjustment of the oil reservoir and fixing its lower end. Preferably, a magnetic suction hole is provided at the center of the bottom wall of the U-shaped limiting groove 31 on the limiting plate 3. A magnet 32 is installed in the magnetic suction hole, and the magnet 32 is a cylindrical structure completely located within the magnetic suction hole. The depth of the magnetic suction hole is arranged along the Y direction. When pre-positioning the oil reservoir, simply place the oil reservoir body into the U-shaped limiting groove 31, and the oil reservoir body 81 will slide down to the bottom of the U-shaped limiting groove 31 under the magnetic force of the magnet 32 and fit against the arc bottom wall of the U-shaped limiting groove 31, improving the pre-positioning efficiency of the oil reservoir, improving the horizontal positioning accuracy of the upper part of the oil reservoir, and saving manpower.
[0069] The locating pin 33 is used to prevent the spring disc from rotating around the oil reservoir during welding. The locating pin 33 can be a cylindrical structure with equal upper and lower diameters, or a cylindrical structure that is thinner at the top and thicker at the bottom. One, two, or three locating pins 33 can be provided. Preferably, two locating pins 33 are provided, symmetrically distributed on both sides of the width direction of the U-shaped limiting groove 31. This improves the positioning accuracy of the spring disc.
[0070] The support member is used to support the spring disc upwards, limiting its vertical movement, and also to check the correct position of the spring disc circumferentially within the oil reservoir. The support member can be a single plate structure, a block structure, or a structure of at least three spaced support columns. Preferably, the support member includes at least three support columns 34 vertically disposed on the top surface of the limiting plate 3. These at least three support columns 34 are evenly distributed along the outer circumference of the U-shaped limiting groove 31. The height difference between the top surfaces of two adjacent support columns 34 is adapted to the spiral lift height of the bottom surface of the support ring plate 92 on the spring disc. The limiting plate 3 has a through-hole, and the lower part of the support column 34 is located within the through-hole and threadedly connected to the limiting plate 3. The height of the support column 34 can be adjusted by screwing it downwards into or upwards out of the through-hole, making it suitable for supporting spring discs with different lift dimensions on their bottom surfaces. By using three or more support columns 34 to provide point support for the support ring plate 92, stable support for the spring disc can be achieved. Compared with other support structures, the structure of the support column 34 is simpler, easier to process, manufacture, and assemble, and saves production costs. To facilitate the rotational installation of the support column 34, the upper part of the support column 34 is milled flat.
[0071] To further prevent incorrect angle installation of the spring disc, preferably, it also includes anti-misalignment posts 35 vertically disposed on the limiting plate 3. The top surface of the anti-misalignment post 35 is higher than the top surface of all the support posts 34. After the spring disc is clamped and positioned, the anti-misalignment posts 35 are spaced below the support ring plate 92 and located on one side of the upper end of the sealing slope 94 on the bottom surface of the support ring plate 92. The projections of the anti-misalignment posts 35 on the horizontal plane intersect with the projections of the support ring plate 92 on the horizontal plane. When the spring disc sleeved on the outside of the oil reservoir body 81 is placed at an incorrect angle or in reverse, the support posts 34 cannot support the spring disc, thus allowing the operator to correct the installation position of the spring disc in time, avoiding incorrect clamping position of the spring disc, and improving the yield rate of the shock absorber.
[0072] The driving component 41 drives the positioning block 42 to reciprocate between the pressing station and the initial position. When clamping and positioning the oil reservoir, the positioning block 42 and the U-shaped limiting groove 31 on the limiting plate 3 cooperate to clamp and position the upper part of the oil reservoir. The driving component 41 can be a telescopic push rod that moves along the Y direction. The telescopic push rod can be a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder. The positioning block 42 is set at the telescopic end of the telescopic push rod. The positioning block 42 can be a plate structure or a rod structure. When clamping the oil reservoir, the oil reservoir needs to be inserted from top to bottom between the positioning block 42 and the U-shaped limiting groove 31, which is inconvenient for clamping and adjusting the oil reservoir. Preferably, the driving component 41 is a rotary cylinder, and the positioning block 42 is a pressure rod structure perpendicular to the rotating shaft of the rotary cylinder, with one end of the pressure rod structure protruding from the side wall of the rotating shaft of the rotary cylinder. When the positioning block 42 is in its initial position away from the pressing station, the projection of the positioning block 42 on the horizontal plane is located outside the projection of the U-shaped limiting groove 31 on the horizontal plane. The rotation angle of the rotary cylinder is generally above 90° to avoid the positioning block 42 affecting the clamping of the oil reservoir and to improve the clamping efficiency of the oil reservoir. Generally, the positioning block 42 is perpendicular to the horizontal plane when in its initial position, and parallel to the horizontal plane when in the pressing station.
[0073] The first positioning component 5 is used to clamp and position the lower end of the lower fork oil reservoir on the welding fixture of this utility model. The second positioning component 6 is used to clamp and position the lower end of the connecting ring oil reservoir on the welding fixture of this utility model. The third positioning component 7 is used to clamp and position the lower end of the ferrule oil reservoir on the welding fixture of this utility model. The first adapter 51, the second adapter 61, and the third adapter 71 can be flat plates parallel to the horizontal plane or frame structures. Because the overall height of the lower fork oil reservoir is relatively large, the first adapter 51 can be a plate structure. The height of the connecting ring oil reservoir and the ferrule oil reservoir is relatively small. To ensure the axial accuracy of the spring disc on the oil reservoir, specifically, the first adapter 51 is an adapter plate 567, and the limiting protrusion 52 is vertically arranged above the adapter plate 567; the second adapter 61 includes an adapter plate 567 and a first lifting column 511 vertically arranged above the adapter plate 567. The upper end of the first lifting column 511 is provided with a first support plate 512 perpendicular to it, and the second connecting part is arranged on the first support plate 512; the third adapter 71 includes an adapter plate 567 and a second lifting column 711 vertically arranged above the adapter plate 567. The upper end of the second lifting column 711 is provided with a second support plate 712 perpendicular to it, and the third connecting part is arranged on the first support plate 512; the first adapter 51, the second adapter 61, or the third adapter 71 can all be detachably connected to the base 1 through the adapter plate 567. The first positioning component 5, the second positioning component 6, or the third positioning component 7 on the base 1 can be easily and quickly installed, removed, or switched. The adapter plate 567 and the base 1 can be connected by positioning pin insertion, bolt fastening, or a combination of positioning pins and bolts.
[0074] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.
[0075] In the description of this utility model, the terms "upper," "lower," "top," "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure. They are only for the convenience of describing this utility model and 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, the terms used to describe the positional relationship in the figure are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above-mentioned terms can be understood according to the specific circumstances.
Claims
1. A welding fixture for automotive shock absorber spring discs, characterized in that, The device includes a base (1) and a vertically mounted stand (2) on the top surface of the base (1). One side of the stand (2) is provided with a limiting plate (3) parallel to the top surface of the base (1), a driving component (41) spaced below the limiting plate (3), and a positioning block (42) located at the movable end of the driving component (41). The limiting plate (3) has a U-shaped limiting groove (31) with its opening facing away from the stand (2). The U-shaped limiting groove (31) penetrates the limiting plate (3) vertically. The bottom wall of the U-shaped limiting groove (31) is an arc surface structure with a corresponding central angle of 180°. The U-shaped limiting groove (31) is used to hold oil. The cylinder body (81) is positioned in the horizontal direction; the top surface of the limiting plate (3) is vertically provided with a positioning pin (33) that matches the axial through hole (93) of the spring disc and a support member for supporting the spring disc. The top surface of the support member matches the shape and structure of the bottom surface of the support ring plate (92) of the spring disc. When the driving member (41) drives the positioning block (42) to the pressing position, the projection of the positioning block (42) on the horizontal plane is located inside the projection of the U-shaped limiting groove (31) on the horizontal plane. A radial positioning space for accommodating the oil storage cylinder body (81) is formed between the positioning block (42) and the bottom wall of the U-shaped limiting groove (31). The base (1) is detachably connected to a first positioning component (5), a second positioning component (6), or a third positioning component (7) located below the positioning block (42); The first positioning component (5) includes a first adapter (51) that can be detachably connected to the base (1) and a limiting protrusion (52) provided on the first adapter (51). The limiting protrusion (52) is provided with a first insertion hole (53) that extends horizontally. A first pin (54) is inserted into the first insertion hole (53). The diameter of the first insertion hole (53) is the same as that of the mounting through hole (84) on the U-shaped connector (83). When the first positioning component (5) is installed on the base (1), the two side walls of the limiting protrusion (52) located at both ends of the first insertion hole (53) are respectively fitted with the two side walls of the U-shaped groove of the U-shaped connector (83). The first pin (54) is coaxially inserted into the first insertion hole (53) and the mounting through hole (84) on the U-shaped connector (83). The second positioning component (6) includes a second adapter (61) that can be detachably connected to the base (1) and a second connecting part disposed on the top surface of the second adapter (61). The second connecting part is used to position and install the connecting ring (85) on the connecting ring oil reservoir. The third positioning component (7) includes a third adapter (71) that can be detachably connected to the base (1) and a third connecting part disposed on the top surface of the third adapter (71). The third connecting part is used to position the open retaining ring (86) on the oil reservoir of the support sleeve.
2. The welding fixture for automotive shock absorber spring discs according to claim 1, characterized in that, The second connecting part includes a limiting plate (62) vertically disposed on the top surface of the second adapter (61). Each limiting plate (62) is provided with a second insertion hole (63) that extends horizontally. A second pin (64) is inserted into the second insertion hole (63) and slides axially therewith. There are two limiting plates (62), which are parallel to each other and spaced apart axially along the second insertion hole (63). A connecting ring limiting space is formed between the two limiting plates (62) for axially positioning the connecting ring (85).
3. The welding fixture for automotive shock absorber spring discs according to claim 2, characterized in that, The third connecting part includes a positioning sleeve (72) vertically disposed on the top surface of the third adapter (71). The upper end surface of the positioning sleeve (72) is provided with a positioning groove (73) that matches the shape and size of the mounting protrusion (87) below the open retaining ring (86). The inner cavity of the positioning sleeve (72) is used to radially position the oil reservoir body (81). When the third adapter (71) is installed on the base (1), the positioning sleeve (72) is coaxially arranged with the arc bottom wall of the U-shaped limiting groove (31).
4. The welding fixture for automotive shock absorber spring discs according to claim 1, characterized in that, A magnetic suction hole is provided at the center of the bottom wall of the U-shaped limiting groove (31) on the limiting plate (3), and a magnet (32) is provided in the magnetic suction hole. The magnet (32) is a column structure and is completely located in the magnetic suction hole.
5. The welding fixture for automotive shock absorber spring discs according to claim 1, characterized in that, The support includes at least three support columns (34) vertically arranged on the top surface of the limiting plate (3). The at least three support columns (34) are evenly distributed along the outer periphery of the U-shaped limiting groove (31). The height difference between the top surfaces of two adjacent support columns (34) is adapted to the spiral lift height of the bottom surface of the support ring plate (92) on the spring disc. The limiting plate (3) is provided with a threaded through hole that runs vertically through it, and the lower part of the support column (34) is located in the threaded through hole and is threadedly connected to the limiting plate (3).
6. The welding fixture for automotive shock absorber spring discs according to claim 5, characterized in that, It also includes a foolproof column (35) vertically disposed on the limiting plate (3), wherein the top surface of the foolproof column (35) is higher than the top surface of all the support columns (34); After the spring disc is clamped and positioned, the anti-fooling posts (35) are spaced below the support ring plate (92) and located on one side of the upper end of the sealing slope 94 on the bottom surface of the support ring plate (92). The projection of the anti-fooling posts (35) on the horizontal plane intersects with the projection of the support ring plate (92) on the horizontal plane.
7. The welding fixture for automotive shock absorber spring discs according to claim 1, characterized in that, The driving component (41) is a rotary cylinder, and the positioning block (42) is a pressure rod structure perpendicular to the rotating shaft of the rotary cylinder, with one end of the pressure rod structure protruding from the side wall of the rotating shaft of the rotary cylinder. When the positioning block (42) is located in the initial position away from the pressing station, the projection of the positioning block (42) on the horizontal plane is located outside the projection of the U-shaped limiting groove (31) on the horizontal plane.
8. The welding fixture for automotive shock absorber spring discs according to claim 3, characterized in that, The first adapter (51) is an adapter plate (567), and the limiting protrusion (52) is vertically arranged above the adapter plate (567); The second adapter (61) includes an adapter plate (567) and a first raising column (511) vertically arranged above the adapter plate (567). The upper end of the first raising column (511) is provided with a first support plate (512) perpendicular to it, and the second connecting part is arranged on the first support plate (512). The third adapter (71) includes an adapter plate (567) and a second lifting column (711) vertically arranged above the adapter plate (567). The upper end of the second lifting column (711) is provided with a second support plate (712) perpendicular to it. The third connecting part is arranged on the first support plate (512). The first adapter (51), the second adapter (61), or the third adapter (71) can be detachably connected to the base (1) via the adapter plate (567).
9. The welding fixture for automotive shock absorber spring discs according to any one of claims 1-8, characterized in that, The first positioning component (5) further includes a pin mounting plate (55) vertically disposed on the first adapter (51). The pin mounting plate (55) is provided with a support hole with the same diameter as the first insertion hole (53) and arranged coaxially. The first pin (54) is inserted into the support hole and the two slide in axially. The pin mounting plate (55) and the limiting protrusion (52) are arranged at an axial distance along the first insertion hole (53). The distance between the pin mounting plate (55) and the limiting protrusion (52) is greater than the wall thickness of the U-shaped connector. The first pin (54) has a first strip-shaped limiting groove (541) with its length arranged along its axial direction on its side wall. Both ends of the first strip-shaped limiting groove (541) are spaced apart from the end face of the first pin (54). The pin mounting plate (55) is threaded with a first limiting screw (56) perpendicular to the axis of the support hole. The end of the first limiting screw (56) away from the nut is located in the support hole and inserted into the first strip-shaped limiting groove (541). The first pin (54) can slide along the axis of the support hole.
10. The welding fixture for automotive shock absorber spring discs according to claim 2, characterized in that, The second pin (64) has a second strip-shaped limiting groove (641) with its length arranged along its axial direction on the outer wall. Both ends of the second strip-shaped limiting groove (641) are spaced apart from the end face of the second pin (64). The limiting plate (62) is threaded with a second limiting screw (66) that is perpendicular to the axis of the second insertion hole (63). The end of the second limiting screw (66) away from the nut is located in the second insertion hole (63) and inserted into the second strip-shaped limiting groove (641). The first pin (54) can slide along the axial direction of the second insertion hole (63).