Spring contact finger welding method and apparatus based thereon

Abstract

This invention relates to the field of spring contact finger processing technology, specifically to a spring contact finger welding method and an apparatus based on the method. The welding method includes the following steps: Positioning: placing the spring contact finger into a preset arc-shaped constraint trajectory, so that the circumferential main body of the spring contact finger, excluding the two movable ends, is accommodated and positioned by the arc-shaped constraint trajectory. This invention achieves rapid pre-positioning and exposure of the area to be welded by placing the workpiece into the preset arc-shaped constraint trajectory and exposing its movable ends. The inner support step, by bringing the inner side of the workpiece into contact with the fixed inner support surface, limits the radial shrinkage deformation that may be caused by the welding heat process. The vertical pressure applied in the fixing step overcomes the elasticity of the workpiece and prevents it from shifting in subsequent steps. The docking step, by synchronously driving the actuating components to move towards each other along a predetermined path, ensures that the two movable ends are smoothly and flushly pushed together to form a tight contact surface without gaps.

Description

Technical Field

[0001] This invention relates to the field of spring contact finger processing technology, and in particular to a spring contact finger welding method and an apparatus based on the method. Background Technology

[0002] As a key elastic conductive element, the spring contact finger (also known as a ring-shaped inclined spring) usually requires the two ends of a spirally formed open spring bar to be welded into a closed ring in practical applications.

[0003] Currently, the welding quality of spring contact fingers largely depends on specialized welding fixtures. Some existing welding fixtures attempt to pre-bend the spring contact fingers into a circle and clamp them in place by setting up annular clamping cavities. However, this approach still has drawbacks in practical applications. Due to the high elasticity and small cross-section of the spring contact fingers, even within a clamping cavity that only provides radial constraint, the two free ends may still be difficult to align tightly and stably during butt jointing due to elastic rebound. This unstable butt jointing is a bottleneck restricting the welding yield and the consistency of joint performance. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a spring contact finger welding method and an apparatus based on the method to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides a method for welding spring contact fingers, the welding method comprising the following steps:

[0006] Positioning: The spring contact finger is placed into a preset arc-shaped constraint trajectory, so that the circumferential main body of the spring contact finger, excluding the two movable ends, is contained and positioned by the arc-shaped constraint trajectory, while the two movable ends extend outward from the opening end of the arc-shaped constraint trajectory.

[0007] Inner support: Makes the inner side of the spring contact finger fit against a fixed inner support surface to restrict its radial movement;

[0008] Fixation: After positioning and internal support, pressure is applied from above to the main body of the spring finger located within the arc-shaped constraint trajectory to prevent it from dislodging;

[0009] Docking: Drive two active components to move toward each other along a predetermined path, acting on the two exposed active ends, and pushing them together to a close contact state;

[0010] Welding: Welding is performed on the joint of the two moving ends that are in close contact.

[0011] As a preferred embodiment of the present invention, a spring-loaded finger welding device, based on the above-described method, includes:

[0012] A welding execution unit, which includes a welding head;

[0013] The positioning and clamping unit includes an arc-shaped support portion for supporting the spring contact finger, the arc-shaped support portion having a limiting structure for restricting the circumferential rotation of the spring contact finger, and a locking mechanism for applying pressure from above to prevent it from disengaging from the arc-shaped support portion.

[0014] The docking drive unit includes a first drive source and a symmetrical linkage mechanism driven by it. The symmetrical linkage mechanism is used to receive the output of the first drive source and synchronously drive two radial action members to move towards each other so as to push the two movable ends of the spring contact finger together and keep them in a docking closed state.

[0015] An inner support unit, which is fixedly disposed on the inner side of the arc-shaped support portion, has an outer contour that matches the inner diameter of the spring contact finger and is used to provide radial support during the docking and welding process.

[0016] As a preferred embodiment of the present invention, the device further includes a slag management unit, which includes a slag collection container located below the arc-shaped support portion, the slag collection container having a slag collection chamber formed therein, and a filter structure located below the joint of the movable end of the spring contact finger, which allows slag to pass through and provides bottom support for the spring contact finger.

[0017] As a preferred technical solution of the present invention, the device further includes a linkage cleaning unit, which includes a cleaning component. The cleaning component is mechanically coupled to the moving component of the docking drive unit and moves with it to unclog and clean the filter structure. The linkage cleaning unit includes a brush rod disposed on the moving component of the docking drive unit. The bristles at the end of the brush rod sweep across the surface of the filter structure when the moving component moves back and forth.

[0018] As a preferred embodiment of the present invention, the symmetrical linkage mechanism includes:

[0019] Two radial sliders that can slide along a predetermined path, wherein the inner sides of the radial sliders are provided with curved surfaces that match the outer edge of the spring contact finger;

[0020] The conversion unit is used to convert the linear motion of the first drive source into a driving action that drives two radial sliders to slide towards or away from each other along a predetermined path. When the radial sliders are driven to slide towards each other to the docking station, their inner curved surfaces and the arc-shaped support unit together form a complete annular constraint channel that is compatible with the annular spring contact finger.

[0021] As a preferred embodiment of the present invention, the conversion unit includes:

[0022] A push plate connected to the output terminal of the first drive source;

[0023] Push pins are provided on the push plate;

[0024] And an inclined guide groove formed on the positioning and clamping unit, the lower part of the radial slider is provided with a slider that cooperates with the inclined guide groove, so that the linear motion of the push column is converted into the radial motion of the radial slider through the inclined guide groove.

[0025] As a preferred embodiment of the present invention, the locking mechanism includes:

[0026] A pressure plate that can extend and retract radially relative to the inner support unit;

[0027] The second driving source is used to drive the pressure plate to extend to press the spring contact finger or retract to release the spring contact finger;

[0028] The second elastic reset element is used to provide an elastic force to the pressure plate to cause it to retract into its retracted position.

[0029] As a preferred embodiment of the present invention, the second driving source includes a shaft with a cam rotatably disposed within the inner support unit, one end of the pressure plate being in contact with the cam, and rotating the shaft driving the pressure plate to extend or retract through the change in the cam radius.

[0030] As a preferred embodiment of the present invention, the limiting structure consists of multiple protrusions that protrude from the surface of the arc-shaped support portion and can be embedded in the gap of the spring contact screw.

[0031] As a preferred embodiment of the present invention, the cross-section of the arc-shaped support portion is arc-shaped, matching the outer diameter of the spring contact finger, and the whole is arranged in a U-shape, with the shape of its arc trajectory matching the outer contour of the spring contact finger except for the movable end.

[0032] The beneficial effects of this invention are as follows: By placing the workpiece into a preset arc-shaped constraint trajectory and exposing its movable end, rapid pre-positioning and exposure of the area to be welded are achieved. The inner support step, by making the inner side of the workpiece fit against the fixed inner support surface, limits the radial shrinkage deformation that may be caused by the welding heat process. The vertical pressure applied in the fixing step overcomes the elasticity of the workpiece and prevents it from shifting in subsequent steps. The docking step, by synchronously driving the action components to move towards each other along a predetermined path, ensures that the two movable ends are pushed together smoothly and flushly to form a tight contact surface without gaps. These steps are interlocked and work together to ensure the quality and consistency of welding from a process perspective. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a side view of the structure of the present invention;

[0035] Figure 2 This is a top view of the structure of the present invention;

[0036] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0037] Figure 4 This is a three-dimensional structural diagram of the front end of the mounting plate, cylinder, and slag collection container of the present invention.

[0038] Figure 5 This is a three-dimensional structural diagram of the rear end of the mounting plate, cylinder, and slag collection container of the present invention.

[0039] Figure 6 This is a three-dimensional structural diagram of the mounting plate, slag collection container, and push plate of the present invention;

[0040] Figure 7 This is a three-dimensional structural diagram of the slag collection container, internal support unit, push plate, push column and brush rod of the present invention;

[0041] Figure 8 This is a three-dimensional structural diagram of the arc-shaped support, inner support unit, filter plate, and shaft of the present invention.

[0042] Figure 9 This is a bottom-view perspective view of the arc-shaped support portion and the inner support unit of the present invention.

[0043] Figure 10 This is a partial three-dimensional structural diagram of the arc-shaped support portion and the inner support unit of the present invention;

[0044] Figure 11 This is a three-dimensional structural diagram of the slag collection container, internal support unit, shaft, cam, and arc-shaped support part of the present invention;

[0045] Figure 12 For the present invention Figure 11 Enlarged structural diagram at point A in the middle;

[0046] Figure 13 This is a schematic diagram of the radial slider structure of the present invention;

[0047] Figure 14 This is a schematic diagram of the three-dimensional structure of the push plate, push column, and brush rod of the present invention.

[0048] The components in the diagram are labeled as follows: 1. Base; 2. Welded head; 3. Bracket; 4. Mounting plate; 5. First mounting hole; 6. Second mounting hole; 7. Slag collection container; 8. Waist-shaped hole; 9. Round hole; 10. Slag collection chamber; 11. Internal support unit; 12. Arc-shaped support part; 13. U-shaped groove; 14. Pressure plate; 15. Pressure plate through groove; 16. Drive plate; 17. Second elastic reset element; 18. Shaft; 19. Cam; 20. Movable frame; 21. Sliding groove; 22. Third elastic reset element. 23. Insert post; 24. Post hole; 25. Boss; 26. Radial slider; 27. Slider; 28. Inclined guide groove; 29. ​​First elastic reset element; 30. Through hole; 31. Cylinder mounting base; 32. Cylinder; 33. Guide rod; 34. Movable plate; 35. Movable groove; 36. Push plate; 37. Push post; 38. Clearance hole; 39. Filter plate; 40. Positioning rod; 41. Positioning slot; 42. Guide groove; 43. Brush rod; 44. Brush bristles; 45. Spring contact finger. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0050] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0051] This invention provides a method for welding a spring contact finger, comprising the following steps: Positioning: placing the spring contact finger 45 into a preset arc-shaped constraint trajectory, such that the circumferential main body of the spring contact finger 45, excluding the two movable ends, is accommodated and positioned by the arc-shaped constraint trajectory, while the two movable ends extend outward from the open end of the arc-shaped constraint trajectory and are exposed; Inner support: fitting the inner side of the spring contact finger 45 against a fixed inner support surface to restrict its radial movement; Fixing: after positioning and inner support, applying pressure from above to the main body of the spring contact finger 45 located within the arc-shaped constraint trajectory to prevent it from coming out; Connecting: driving two actuating components to move towards each other along a predetermined path, acting on the two exposed movable ends, pushing them together to a close contact state; Welding: performing welding on the joint of the two movable ends in the close contact state;

[0052] The above technical solution solves the problems of poor welding quality caused by difficulty in fixing the spring contact finger 45, uneven alignment, and easy deformation in manual or semi-automatic welding. Specifically, its working principle can be decomposed into four stages: constraint, stabilization, closure, and connection. In the first stage, through positioning and internal support steps, the main body of the spring contact finger 45 (i.e., the part excluding the two movable ends) is three-dimensionally constrained from the external trajectory and internal support surface, initially limiting it to a predetermined spatial position, while strategically exposing the two movable ends to be welded. In the second stage, through the fixing step, a vertical pressure is applied from above to firmly press down the positioned main body to counteract any elastic rebound or displacement that may occur during subsequent operations. In the third stage, the docking step, through symmetrical mechanical actions, smoothly and synchronously pushes the two freely exposed movable ends towards the center until their end faces achieve tight contact without gaps. Finally, the welding step is carried out in the ideal docking state to complete the permanent connection.

[0053] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, in this embodiment, a spring-touch welding device, based on the above method, includes: a welding execution unit, which includes a welding head 2; a positioning and clamping unit, which includes an arc-shaped support portion 12 for supporting the spring-touch 45, the arc-shaped support portion 12 being provided with a limiting structure for restricting the circumferential rotation of the spring-touch 45, and a locking mechanism for applying pressure from above to prevent it from disengaging from the arc-shaped support portion 12; a docking drive unit, which includes a first drive source and a symmetrical linkage mechanism driven by it, the symmetrical linkage mechanism being used to receive the output of the first drive source and synchronously drive two radial action members to move towards each other, so as to push the two movable ends of the spring-touch 45 together and maintain a docking closed state; and an inner support unit 11, which is fixedly disposed inside the arc-shaped support portion 12, the outer contour of which is adapted to the inner diameter of the spring-touch 45, for providing radial support during docking and welding.

[0054] The above technical solution solves the problem of the specialized equipment required to execute the method, making the process physical and automated. Specifically, its working principle is as follows: the spring contact finger 45 is initially constrained by the positioning and clamping unit, internal support is provided by the inner support unit 11, the locking mechanism presses it from above, the docking drive unit precisely drives the two movable ends to close, and finally the welding execution unit completes the welding. During operation, the spring contact finger 45 is placed into the arc-shaped support part 12, and each unit is started to work in sequence.

[0055] like Figure 7 , Figure 10 , Figure 11 , Figure 12 and Figure 14 As shown, in this embodiment, the device further includes a slag management unit, which includes a slag collection container 7 located below the arc-shaped support portion 12, a slag collection chamber 10 formed in the slag collection container 7, and a filter structure located below the movable end docking point of the spring contact finger 45, which allows slag to pass through and provides bottom support for the spring contact finger 45.

[0056] The above-mentioned technical solution can solve the problem of welding slag spatter contaminating equipment and affecting subsequent operation and observation during welding. Specifically, its working principle is to set up a filter structure directly below the welding point, allowing molten welding slag to pass through, while the spring contact finger 45 supported by the filter structure is isolated above; the welding slag eventually falls into the slag collection chamber 10 of the slag collection container 7. During operation, this unit works passively to collect welding slag. This keeps the working area clean, and the collected welding slag is easy to centrally process.

[0057] like Figure 4 , Figure 7 and Figure 14As shown, in this embodiment, the device further includes a linkage cleaning unit, which includes a cleaning component. The cleaning component is mechanically coupled to the moving component of the docking drive unit and moves with it to unclog and clean the filter structure. The linkage cleaning unit includes a brush rod 43 disposed on the moving component of the docking drive unit. The bristles 44 at the end of the brush rod 43 sweep across the surface of the filter structure when the moving component moves back and forth.

[0058] The above technical solution solves the problem of welding slag easily clogging the pores of the filter structure, affecting its permeability and slag collection effect. Specifically, its working principle is that the cleaning component and the moving component of the docking drive unit are mechanically linked. When the moving component drives the movable end to dock or reset, the brush bristles 44 reciprocate to sweep the surface of the filter structure. This achieves self-cleaning of the filter structure and reduces the frequency of manual cleaning.

[0059] like Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, in this embodiment, the symmetrical linkage mechanism includes: two radial sliders 26 that can slide along a predetermined path, the inner sides of the radial sliders 26 are provided with curved surfaces that match the outer edge of the spring finger 45; a conversion part is used to convert the linear motion of the first driving source into a driving action that drives the two radial sliders 26 to slide towards or away from each other along the predetermined path. The function of the predetermined path is to make the motion direction of the two working parts ultimately point to the two movable ends and push them together in a direction that is approximately perpendicular to the virtual central axis of the spring finger 45. When the radial sliders 26 are driven to slide towards each other to the docking station, their inner curved surfaces and the arc-shaped support part 12 together form a complete and adapted annular constraint channel for the annular spring finger 45.

[0060] The above technical solution solves the problem of how to smoothly and synchronously convert the power of the first driving source into a precise radial clamping force on the two movable ends. Specifically, its working principle utilizes two radial sliders 26 with specific curved surfaces as actuating components, which slide along a predetermined path under drive. Their curved surfaces are used to push and ultimately cover the movable end of the spring contact finger 45. During operation, when the radial sliders 26 slide to the docking position, their curved surfaces and the arc-shaped support portion 12 together form a complete closed-loop cavity. This achieves the transition of the movable end from an exposed state to a closed annular state, and the closed annular contour is effectively constrained, which is beneficial for welding.

[0061] like Figure 7 and Figure 14As shown, in this embodiment, the conversion unit includes: a push plate 36 connected to the output end of the first drive source; a push post 37 disposed on the push plate 36; and an inclined guide groove 28 formed on the positioning and clamping unit. The lower part of the radial slider 26 is provided with a slider 27 that cooperates with the inclined guide groove 28, so that the linear motion of the push post 37 is converted into the radial motion of the radial slider 26 through the inclined guide groove 28. One end of the bottom of the slider 27 is fixedly connected to one end of the first elastic reset element 29, and the other end of the first elastic reset element 29 is fixedly connected to the inner support unit 11. The first elastic reset element 29 provides the slider 27 with an elastic force to drive the radial slider 26 back to the initial position. Specifically, when the radial slider 26 slides to the docking station, the first elastic reset element 29 is in a compressed state and accumulates elastic potential energy. When the push post 37 returns to the initial position, the first elastic reset element 29 gradually expands from the compressed state, thereby driving the slider 27 and the radial slider 26 to reset, so as to prepare for the next round of welding positioning.

[0062] The above technical solution addresses the need for a simple, reliable, and symmetrical motion conversion method. Specifically, this embodiment defines the conversion unit. Its working principle is as follows: the linear motion of the pusher 37 pushes the radial slider 26, causing the slider 27 at the bottom of the radial slider 26 to slide within the inclined guide groove 28. Due to the inclination of the guide groove, the slider 27, along with the radial slider 26, undergoes radial displacement. During operation, a linear drive source such as the cylinder 32 pushes the pusher plate 36 forward, thus converting the linear motion into opposing radial motion of the two radial sliders 26 through this mechanism. This ensures that the two movable ends are pushed together synchronously and at equal distances.

[0063] like Figure 7 and Figure 8 as well as Figure 13 As shown, where Figure 13 Another construction of the radial slider 26 is clearly shown. Specifically, in this embodiment, the side surface of the radial slider 26 is provided with a through hole 30, and a guide surface is formed on the side facing the push post 37. This allows the push post 37 to first contact the guide surface during linear movement to drive the radial slider 26 to slide to the docking position. When the radial slider 26 reaches the docking position, the through hole 30 is aligned with the axial movement path of the push post 37, allowing the push post 37 to continue moving and at least partially penetrate the through hole 30. After penetrating the through hole 30, the end of the push post 37 can be inserted into the helical gap of the spring contact finger 45, thereby forming an additional radial constraint on the movable end of the spring contact finger 45.

[0064] The above technical solution can further suppress the micro-movement of the spring contact finger 45 during the welding process. Specifically, its working principle is that the push post 37 has a dual function of driving and locking: In the first stage, the end of the push post 37 acts on the guide surface of the radial slider 26, precisely pushing it to the predetermined position (i.e., the docking position) where the movable end of the spring contact finger 45 is docked and closed; In the second stage, when the radial slider 26 is in place, the push post 37 is exactly aligned with the through hole 30 on the radial slider 26 and continues to move forward, with its end directly inserted into the gap of the screw ring of the docked spring contact finger 45. During operation, this process is automatically completed by a continuous drive from the first drive source. Through the insertion of the push post 37 and the through hole 30, the mechanical self-locking of the position of the radial slider 26 is achieved, ensuring the stability of the docking state; Secondly, the insertion of the end of the push post 37 into the spring screw ring forms a direct, point-to-point additional positioning of the movable end of the spring contact finger 45.

[0065] like Figure 8 , Figure 9 and Figure 10 As shown, in this embodiment, the locking mechanism includes: a pressure plate 14 that is radially extendable and retractable relative to the inner support unit 11; a second drive source for driving the pressure plate 14 to extend to press the spring contact finger 45 or retract to release the spring contact finger 45; and a second elastic reset element 17 for providing an elastic force to the pressure plate 14 to cause it to tend to the retracted position.

[0066] The above technical solution solves the problem of needing a clamping method that can reliably press irregularly shaped spring parts from above without interfering with other operations such as docking and welding. Specifically, its working principle is to use a second drive source to actively drive the pressure plate 14 to extend radially, pressing the upper surface of the spring contact finger 45, and then retracting it by relying on the second elastic reset element 17. During operation, after the spring contact finger 45 is placed, the second drive source is activated to press down the pressure plate 14; after welding is completed, the drive source releases the force, and the pressure plate 14 retracts under the action of elastic force.

[0067] like Figure 9 and Figure 10 As shown, in this embodiment, the second driving source includes a shaft 18 with a cam 19 rotatably disposed in the inner support unit 11. One end of the pressure plate 14 contacts the cam 19. Rotating the shaft 18 drives the pressure plate 14 to extend or retract through the change in the radius of the cam 19.

[0068] The above technical solution enables the extension of the pressure plate 14. Specifically, its working principle involves using a cam 19 mechanism. The rotating shaft 18 causes the cam 19 to rotate, changing its working contour radius and directly pushing the drive plate 16, thereby forcing the pressure plate 14 to overcome the force of the second elastic reset element 17 and extend outward. During operation, the extension and retraction of the pressure plate 14 can be controlled by rotating the shaft 18, resulting in a compact structure.

[0069] like Figure 8 and Figure 10 As shown, in this embodiment, the limiting structure consists of multiple protrusions 25 that protrude from the surface of the arc-shaped support portion 12 and can be embedded in the gap of the spring contact finger 45 coil.

[0070] The above technical solution effectively prevents the spring contact finger 45 from rolling or shifting circumferentially along its own helical direction. Specifically, its working principle involves using multiple bosses 25 embedded in the gaps between the helical coils of the spring contact finger 45. During operation, when the spring contact finger 45 is placed into the arc-shaped support 12, the bosses 25 naturally engage with the gaps in its helical coils. This achieves circumferential angular positioning of the spring contact finger 45, ensuring that its movable end is always exposed in the preset position, laying the foundation for subsequent docking.

[0071] like Figure 8 , Figure 9 and Figure 10 As shown, in this embodiment, the cross-section of the arc-shaped support portion 12 is arc-shaped, matching the outer diameter of the spring contact finger 45, and the whole is arranged in a U-shape. The shape of its arc trajectory matches the outer contour of the spring contact finger 45 except for the movable end.

[0072] The above technical solution solves the problem of how to quickly and accurately pre-position spring components with complex spatial curves. Specifically, its working principle involves providing a U-shaped contoured track that closely fits most of the outer contour of the spring contact finger 45. During operation, the spring contact finger 45 is nested into this U-shaped track. This makes the insertion of the spring contact finger 45 simple and intuitive, achieving preliminary radial positioning.

[0073] like Figure 9 , Figure 10 and Figure 11 As shown, in this embodiment, the inner support unit 11 is a hollow cylinder. The outer wall of the cylinder is in contact with the inner side of the spring contact finger 45. A pressure plate through groove 15 adapted to the cross-section of the pressure plate 14 is provided on the outer circumference of the cylinder. A drive plate 16 cooperating with the cam 19 is provided on the inward side of the pressure plate 14. A second elastic reset element 17 is connected between the pressure plate 14 and the inner side of the cylinder. The second elastic reset element 17 is used to provide a tendency for the pressure plate 14 to retract into the cylinder.

[0074] The above technical solution solves the problem of how to highly integrate the internal support function and the upper pressure drive function into a single component to simplify the overall layout. Specifically, its working principle is as follows: the internal support unit 11 is a hollow cylinder, which provides an internal support surface and also serves as a housing for accommodating the cam 19, shaft 18, and pressure plate drive assembly; the pressure plate 14 extends or retracts through the pressure plate through slot 15. During operation, all pressing drive components are integrated inside the cylinder, resulting in a compact structure.

[0075] like Figure 10 and Figure 11 As shown, in this embodiment, the device further includes a limiting mechanism for restricting the axial rotation of the shaft 18. The limiting mechanism includes a sliding groove 21, which is opened at the portion of the shaft 18 that passes through the top of the cylinder. A movable frame 20 is slidably disposed in the sliding groove 21. A pin 23 extends vertically from the side of the movable frame 20 toward the top of the cylinder. The pin 23 engages with a column hole 24 disposed at the top of the cylinder. A third elastic reset element 22 is disposed in the sliding groove 21. The third elastic reset element 22 is used to push the movable frame 20 so that its pin 23 is inserted into the column hole 24.

[0076] The above technical solution solves the safety hazard of loss of clamping force due to accidental rotation of the cam 19 mechanism under vibration or external force. Specifically, its working principle employs a pin-type locking: after the shaft 18 rotates to its position (i.e., the pressure plate 14 clamps), the movable frame 20 moves under the action of the third elastic reset element 22, causing the insert pin 23 to insert into the pin hole 24, thereby mechanically locking the shaft 18. During operation, the locking is completed automatically or with slight external force after rotating the shaft 18. This solves the safety hazard of loss of clamping force due to accidental rotation of the cam 19 mechanism under vibration or external force. The resulting technical effect is to provide mechanical interlocking protection for the clamping state, greatly enhancing the reliability and safety of clamping.

[0077] like Figure 3 , Figure 4 and Figure 5 As shown, in this embodiment, the device further includes: a base 1, on which a cylinder fixing seat 31 is provided at the upper end; a cylinder 32 serving as the first driving source, the cylinder 32 being fixedly connected to the cylinder fixing seat 31, the movable rod of the cylinder 32 being connected to a movable plate 34, and a clamp for fixing the end rod of the push plate 36 being provided on the movable plate 34.

[0078] The above technical solution solves the problem of providing a stable and controllable power foundation for the docking drive unit and effectively transmitting power to the actuator. Specifically, its working principle is as follows: the base 1 serves as the mounting foundation for the entire device, and the cylinder 32, as a standard linear power source, is securely installed through the cylinder mounting base 31. Its power is transmitted to the push plate 36 through the movable plate 34 and the clamp. During operation, controlling the extension and retraction of the cylinder 32 drives the entire docking action.

[0079] like Figure 6 and Figure 7As shown, in this embodiment, an mounting plate 4 is fixedly installed on the base 1, and ear plates are formed at both ends of the slag collection container 7. The two ear plates are respectively provided with a waist-shaped hole 8 and a round hole 9. The mounting plate 4 is provided with a first mounting hole 5 and a second mounting hole 6 that are adapted to the waist-shaped hole 8 and the round hole 9.

[0080] The above technical solution solves the problem that the slag collection container 7 needs to be easy to disassemble and clean, while allowing for a certain positional adjustment during installation to align with the upper filter structure. Specifically, its working principle is to adopt an installation strategy of "one hole for positioning (round hole 9 and second mounting hole 6) and one hole for adjustment (waist-shaped hole 8 and first mounting hole 5)". During operation, first align the round hole 9 for installation, and then adjust the position through the waist-shaped hole 8 before tightening.

[0081] like Figure 10 , Figure 11 and Figure 12 As shown, in this embodiment, the filter structure includes a filter plate 39. The upper end of the arc-shaped support portion 12 is provided with a groove adapted to the filter plate 39. The periphery of the filter plate 39 is provided with a vertical positioning rod 40. The positioning rod 40 is inserted and pulled into the positioning slot 41 opened at the upper end of the arc-shaped support portion 12. The arc-shaped support portion 12 is also provided with a slag guide groove communicating with the groove. The slag guide groove and the groove form a slag discharge channel communicating with the slag collection chamber 10.

[0082] The above technical solution solves the problem of how to facilitate the installation and removal of filter components for cleaning or replacement, while ensuring accurate installation for effective collection of welding slag. Specifically, its working principle is as follows: the filter plate 39 itself carries the spring contact finger 45 and provides initial filtration for the welding slag. After passing through its pores, the welding slag is directly guided into the slag collection chamber 10 below via the inclined or vertical channel of the slag guide groove connected to it. During operation, the filter plate 39 can be quickly and accurately installed and fixed by aligning the positioning rods 40 around the filter plate 39 with and inserting them into the pre-machined positioning slots 41 on the upper surface of the arc-shaped support 12; it can be pulled out in the reverse direction for cleaning.

[0083] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of the present invention is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0084] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A spring finger welding device, characterized by, include: A welding execution unit, which includes a welding head (2); The positioning and clamping unit includes an arc-shaped support portion (12) for supporting the spring contact finger (45), the arc-shaped support portion (12) being provided with a limiting structure for restricting the circumferential rotation of the spring contact finger (45), and a locking mechanism for applying pressure from above to prevent it from disengaging from the arc-shaped support portion (12). The docking drive unit includes a first drive source and a symmetrical linkage mechanism driven by it. The symmetrical linkage mechanism is used to receive the output of the first drive source and synchronously drive two radial action members to move towards each other, so as to push the two movable ends of the spring contact finger (45) together and keep them in a docking closed state. The symmetrical linkage mechanism includes: two radial sliders (26) that can slide along a predetermined path. The inner side of the radial sliders (26) is provided with a curved surface that matches the outer edge of the spring contact finger (45); a conversion part is used to convert the linear motion of the first drive source into a driving action that drives the two radial sliders (26) to slide towards each other or away from each other along a predetermined path. When the radial sliders (26) are driven to slide towards each other to the docking station, their inner curved surfaces and the arc-shaped support part (12) together form a complete and adapted annular constraint channel for the annular spring contact finger (45); the conversion part includes: a push plate (36) connected to the output end of the first drive source; a push post (37) provided on the push plate (36); and a push post (37) formed in the... The positioning and clamping unit has an inclined guide groove (28), and the lower part of the radial slider (26) is provided with a slider (27) that cooperates with the inclined guide groove (28), so that the linear motion of the push post (37) is converted into the radial motion of the radial slider (26) through the inclined guide groove (28); the side surface of the radial slider (26) is provided with a through hole (30), and a guide surface is formed on the side facing the push post (37); in the first stage, the push post (37) contacts the guide surface and drives the... The radial slider (26) slides to the docking station, bringing the two movable ends together into close contact. In the second stage, when the radial slider (26) reaches the docking station, the axial movement paths of the through hole (30) and the push column (37) are aligned. The push column (37) continues to move under the same driving action of the first driving source, passes through the through hole (30), and its end is inserted into the helical gap of the spring contact finger (45), forming an additional radial constraint on the movable end of the spring contact finger (45). The inner support unit (11) is fixedly disposed inside the arc-shaped support part (12), and its outer contour is adapted to the inner diameter of the spring contact finger (45) to provide radial support during the docking and welding process.

2. The spring finger bonding apparatus of claim 1, wherein, The device also includes a slag management unit, which includes a slag collection container (7) located below the arc-shaped support (12), the slag collection container (7) having a slag collection chamber (10) formed therein, and a filter structure located below the movable end of the spring finger (45) that allows slag to pass through and provides bottom support for the spring finger (45).

3. The spring finger bonding apparatus of claim 2, wherein, The device also includes a linkage cleaning unit, which includes a cleaning component. The cleaning component is mechanically coupled to the moving component of the docking drive unit and moves with it to unclog and clean the filter structure. The linkage cleaning unit includes a brush rod (43) on the moving component of the docking drive unit. The bristles (44) at the end of the brush rod (43) sweep across the surface of the filter structure when the moving component moves back and forth.

4. The spring finger bonding apparatus of claim 1, wherein, The locking mechanism includes: A pressure plate (14) that can be radially extended and retracted relative to the inner support unit (11). The second drive source is used to drive the pressure plate (14) to extend to press the spring contact finger (45) or retract to release the spring contact finger (45). The second elastic reset element (17) is used to provide the pressure plate (14) with an elastic force that causes it to retract into the retracted position.

5. The spring finger bonding apparatus of claim 4, wherein, The second drive source includes a shaft (18) with a cam (19) rotatably disposed in the inner support unit (11). One end of the pressure plate (14) contacts the cam (19). Rotating the shaft (18) drives the pressure plate (14) to extend or retract through the change in the radius of the cam (19).

6. The spring finger bonding apparatus of claim 1, wherein, The limiting structure consists of multiple bosses (25) that protrude from the surface of the arc-shaped support (12) and can be embedded in the gap of the spring contact finger (45) coil.

7. The spring finger bonding apparatus of claim 1, wherein, The cross-section of the arc-shaped support (12) is arc-shaped, matching the outer diameter of the spring finger (45), and the whole is arranged in a U-shape. The shape of its arc trajectory matches the outer contour of the spring finger (45) except for the movable end.

8. A spring contact finger welding method based on the spring contact finger welding apparatus of claim 1, characterized by, The welding method includes the following steps: Positioning: Place the spring contact finger (45) into a preset arc-shaped constraint trajectory, so that the circumferential main body of the spring contact finger (45) except for the two movable ends is contained and positioned by the arc-shaped constraint trajectory, while the two movable ends extend outward from the opening end of the arc-shaped constraint trajectory. Inner support: to make the inner side of the spring contact finger (45) fit against a fixed inner support surface to restrict its radial movement; Fixation: After positioning and internal support, pressure is applied from above to the main body of the spring contact finger (45) located within the arc-shaped constraint trajectory to prevent it from dislodging; Docking: Drive two active components to move toward each other along a predetermined path, acting on the two exposed movable ends to push them together into a close contact state; after pushing the two movable ends together into a close contact state, the same drive source continues to drive the same active component to move, so that its end is inserted into the helical gap of the movable end, forming an additional radial constraint; Welding: Welding is performed on the joint of the two moving ends that are in close contact.

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