An automated welding device for wave springs

Abstract

The application provides a waveform spring automatic welding device, which comprises a clamp base plate, a radial positioning mechanism and a pressing mechanism. The clamp base plate is provided with a lower avoiding opening. The radial positioning mechanism comprises a driving member, a plurality of linkage members arranged in a circumferential direction of the driving member and a plurality of supporting members connected with the linkage members. The pressing mechanism comprises a pressing plate which is arranged on the clamp base plate in an openable and closable manner, and the pressing plate is provided with an upper avoiding opening. The upper avoiding opening and the lower avoiding opening are arranged oppositely to form a welding channel. The pressing plate is provided with a plurality of pressing blocks which are used for pressing the waveform spring to be welded to make two welding end faces of the waveform spring to be welded in the same welding plane. The application can provide uniform and repeatable radial positioning for the thin-wall waveform spring, avoid local extrusion and deformation caused by external clamping, keep the welding end faces consistent in the thickness direction, and reserve a through channel for the welding execution end in the pressing state, thereby improving the positioning consistency and the welding quality.

Description

Technical Field

[0001] This invention belongs to the technical field of wave spring welding devices, and specifically relates to an automated wave spring welding device. Background Technology

[0002] Wave springs are elastic elements with several peaks and troughs. They are usually formed by winding strip or ring-shaped elastic metal parts and welding them together at the open ends to form a closed loop.

[0003] Because wave springs have a thin-walled structure with alternating crests and troughs, their wall thickness is typically less than millimeters. During clamping, they are highly susceptible to localized compression, warping, and misalignment. The gap, lateral position, and alignment of the two ends to be welded directly determine the weld quality and dimensional consistency of the product. While heat treatment processes such as laser welding are themselves very quick, auxiliary processes such as loading, positioning, clamping, end-face alignment, and unloading consume the majority of the cycle time, becoming the main bottlenecks restricting mass production efficiency.

[0004] Several targeted solutions already exist in the existing wave spring welding and clamping technology.

[0005] For example, Chinese utility model patent CN218253413U discloses a wave spring welding fixture. This fixture improves the positioning effect of the wave spring band by using contoured surfaces and avoids the influence of laser beams on the fixture by avoiding certain parts. However, the positioning of this fixture depends on the fit between the upper and lower contoured surfaces and the shape of the wave spring band. When changing the design, support blocks and clamping blocks that are compatible with the wave spring band must be replaced, which limits its versatility.

[0006] In addition to the shortcomings of the existing technologies mentioned above, the existing wave spring clamping methods also have the following common problems: (1) They rely on operators to repeatedly adjust the relative position of the workpiece and the fixture. The clamping consistency depends on the operator's experience, the positioning repeatability is poor, and the clamping of a single piece takes a long time, making it difficult to form an automatic cycle. (2) Simple radial external clamping requires concentrated clamping force to be applied to the thin-walled outer surface, which can easily produce local indentations or even permanent deformation on the workpiece surface. Vacuum adsorption fixtures are significantly affected by the surface condition of the workpiece (oil stains, oxide layer, warping), and the adsorption force is unstable. Once there is air leakage, the workpiece will be displaced. (3) Although the use of fixed limit blocks can improve coarse positioning, an assembly gap must be maintained between the limit block and the workpiece in order to facilitate automatic loading. This gap will form an alignment deviation that cannot be ignored. In addition, different batches of workpieces may have bending, inconsistent wave height, or dimensional fluctuations. It is difficult to meet the three requirements of rapid loading, uniform clamping, and stable end face alignment by relying solely on a single rigid limit block.

[0007] Therefore, there is an urgent need for an automated welding device that can achieve uniform force distribution, repeatable radial center positioning, and bidirectional end face alignment without damaging the outer surface of thin-walled workpieces. Summary of the Invention

[0008] Purpose of the invention: In order to overcome the above shortcomings, the present invention provides an automated welding device for wave springs, which makes the thin-walled wave springs uniformly stressed, can be repeatedly radially positioned, and has consistent clamping and positioning, avoiding local squeezing, indentation and deformation, avoiding misalignment of welding end faces, reducing assembly gaps, and improving welding quality and efficiency.

[0009] Technical solution: In order to achieve the above objectives, the present invention provides an automated welding device for wave springs, including a fixture base plate, wherein a lower clearance opening is provided on the fixture base plate.

[0010] A radial positioning mechanism is mounted on the base plate of the fixture. The radial positioning mechanism includes a driving component, multiple linkage components spaced apart circumferentially along the driving component, and multiple clamping components connected to each linkage component. The driving component drives each clamping component to move synchronously radially through each linkage component, so as to support and establish radial center positioning against the wave spring to be welded from its inner circumference.

[0011] The clamping mechanism includes a pressure plate that can be opened and closed on the fixture base plate, and the pressure plate has an upper clearance opening. The upper clearance opening and the lower clearance opening are arranged opposite to each other to form a welding channel. Multiple pressure blocks are detachably provided on the side of the pressure plate facing the fixture base plate. The pressure blocks are used to press against the wave spring to be welded during welding, so that its two end faces to be welded are on the same welding plane.

[0012] In this invention, the welding execution end (such as a laser head) can form a welding channel from the upper and lower clearance openings to approach the part to be welded, facilitating observation of the weld and removal of weld slag. The radial positioning mechanism simultaneously abuts against the inner circumference of the wave spring to be welded at multiple points, dispersing the clamping force along the circumference and aligning the workpiece center with the fixture reference axis. This avoids localized squeezing, indentation, and deformation caused by simple external clamping. Combined with the pressure block pressing against the wave spring to be welded, the end faces to be welded are placed on the same welding plane, preventing welding misalignment and improving welding accuracy.

[0013] Furthermore, in the aforementioned automated wave spring welding device, a pre-positioning component is detachably provided on the fixture base plate. The pre-positioning components are spaced apart around the outer periphery of the radial positioning mechanism. The wave spring to be welded is positioned between the pre-positioning components and the radial positioning mechanism. The pre-positioning components are used to limit the position of the wave spring to be welded before the clamping component moves. The pre-positioning components act as a coarse limit and maintain a gap that allows for automatic feeding, without applying pressure to the wave spring to be welded, thus preventing squeezing. The precise positioning of the wave spring to be welded is accomplished by the radial positioning mechanism.

[0014] Furthermore, in the aforementioned automated wave spring welding device, the driving component includes an axial moving component. Each of the linkage components includes a first linkage plate and a second linkage plate, which are rotatably connected via a rotating shaft. One end of the first linkage plate is hinged to the axial moving component, and the other end is hinged to the corresponding support component. When the axial moving component moves axially, it drives the corresponding support component to move radially via the first linkage plate, thereby converting the axial movement into synchronous radial movement of multiple support components. This achieves multi-point synchronous contact with the inner circumference of the wave spring to be welded, avoiding local compression, indentation, and deformation.

[0015] Furthermore, in the aforementioned automated wave spring welding device, the axial moving component includes a lead screw and a lead screw nut. The lead screw is arranged vertically, and the lead screw and lead screw nut are threadedly engaged. The lead screw is connected to the first rotary drive device via a worm gear mechanism. One end of the second linkage plate is hinged to a bearing seat at the end of the lead screw, and the other end is slidably engaged with a through groove arranged vertically on the tensioning component. The worm gear mechanism provides deceleration and self-holding functions, preventing accidental retraction of the tensioning component during sudden shutdowns. Simultaneously, the lead screw and lead screw nut have high transmission positioning accuracy, ensuring synchronous internal support of the tensioning component.

[0016] Furthermore, in the aforementioned automated wave spring welding device, a radial guide portion is provided on the fixture base plate. Each clamping member moves along its corresponding radial guide portion. A contact block is detachably provided on the side of the clamping member facing the wave spring to be welded. Wave springs with different inner diameters can be covered by replacing contact blocks of different thicknesses.

[0017] Furthermore, in the aforementioned automated wave spring welding device, the fixture base plate and the pressure plate are hinged together by a hinge assembly. The pressure plate can be rotated relative to the fixture base plate via the hinge assembly. The pressure plate is connected to a gear transmission component, the axis of which is coaxial with the rotation axis of the hinge assembly. The pressure plate is connected to a second rotary drive device via the gear transmission component, the second rotary drive device being used to drive the pressure plate to open and close relative to the fixture base plate.

[0018] Furthermore, in the aforementioned automated wave spring welding device, the pressure plate is provided with a clearance groove for the radial positioning mechanism to pass through. Pressure blocks are arranged along the outer periphery of the clearance groove, and are positioned in pairs on both sides of the radial positioning mechanism. The opposing surfaces of the paired pressure blocks are respectively provided with pressure-applying inclined surfaces, which are used to apply axial and radial pressure to both ends of the wave spring to be welded, axially aligning the two ends of the wave spring to be welded. The clearance groove allows the pressure plate to accommodate the upper part of the radial positioning mechanism when closed, avoiding interference. The paired pressure-applying inclined surfaces are arranged opposite each other to form a wedge-shaped clamping space. When the pressure plate closes, a single inclined surface simultaneously generates an axial clamping force and a radial centering force, both leveling the wave crests in the thickness direction and radially pushing the two ends closer together.

[0019] Furthermore, in the aforementioned automated wave spring welding device, the pressure plate is equipped with limiting plates, with two limiting plates respectively located on both sides of the upper clearance opening. The limiting plates have V-shaped limiting grooves, and the two ends of the wave spring to be welded are respectively accommodated within the V-shaped limiting grooves of the two limiting plates. The V-shaped limiting grooves radially limit the two ends of the wave spring to be welded, ensuring radial alignment. The opening of the V-shaped limiting groove faces the wave spring to be welded, and its symmetrical V-shaped geometry automatically guides the end of the wave spring to be welded to the center position of the V-shaped limiting groove during the closing process of the pressure plate, achieving radial alignment without the need for an additional centering drive mechanism.

[0020] Furthermore, in the aforementioned automated wave spring welding device, a spring plunger is provided on the pressure plate or the base plate of the fixture. The spring plunger is positioned opposite to the wave spring to be welded. When the pressure plate is closed, the spring plunger applies a controlled elastic preload to the wave spring to be welded, in order to accommodate thickness fluctuations in different batches of workpieces and avoid rigid overpressure.

[0021] As can be seen from the above technical solution, the present invention has the following beneficial effects: ①The automated welding device for wave springs of the present invention uses multiple clamping components to act synchronously on the inner circumference of the wave spring to be welded, so that the clamping force is distributed along the circumference, which can reduce local indentation and deformation of thin-walled wave springs and improve the repeatability of center positioning; since the clamping force acts on the inner circumference rather than the outer surface, no clamping marks are left on the product's appearance. ②The present invention provides axial clamping force and radial centering force simultaneously through the pressure slope of the paired pressure blocks, so that the two ends to be welded are leveled in the thickness direction and brought closer to each other, avoiding misalignment of the welding end faces and improving welding quality; ③ This invention uses a V-shaped limiting groove to automatically center the two ends of the wave spring to be welded, which, in conjunction with the axial leveling of the pressure slope, achieves bidirectional alignment in both the radial and axial directions. Moreover, the centering does not rely on additional sensors or drive mechanisms, and the structure is simple and reliable. ④ The present invention sets a pre-positioning component around the outer periphery of the inner support mechanism for coarse positioning, retains the feeding gap and does not participate in synchronous pressure application, which facilitates automatic loading and unloading, avoids bidirectional extrusion of thin-walled workpieces, and takes into account both rapid loading and deformation prevention. ⑤ In this invention, the contact block, pressure block, and prepositioning component are all designed to be detachable, so that the device can be adapted to wave springs of different diameters, thicknesses, and waveform specifications by replacing the contact block, pressure block, and prepositioning component, thereby improving the adaptability of the device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the automated welding device for wave springs of the present invention; Figure 2 This is a schematic diagram of the structure of the automated wave spring welding device of the present invention, which is equipped with a wave spring to be welded. Figure 3 This is an exploded view of the radial positioning mechanism; Figure 4 This is a schematic diagram of the structure of the automated wave spring welding device of the present invention, which removes the radial positioning mechanism; Figure 5 for Figure 4 A magnified view of the middle limit plate area.

[0023] In the figure: 1. Fixture base plate, 11. Lower clearance opening, 12. Pre-positioning component, 13. Radial guide part, 2. Radial positioning mechanism, 21. Driving component, 211. Lead screw, 212. Lead screw nut, 22. Linkage component, 23. Support component, 3. Pressing mechanism, 31. Pressure plate, 311. Upper clearance opening, 32. Pressure block, 321. Pressure slope, 33. Clearance groove, 34. Limiting plate, 341. V-shaped limiting groove, 4. Hinge assembly, 5. Gear transmission component, 100. Wave spring to be welded. Detailed Implementation Example

[0024] like Figure 1-2 An automated welding device for wave springs is shown, comprising: a fixture base plate 1, a radial positioning mechanism 2, and a clamping mechanism 3. The fixture base plate 1 has a lower clearance opening 11. The radial positioning mechanism 2 is mounted on the fixture base plate 1. In this embodiment, the fixture base plate 1 is fixed to an external base and is connected to a first rotary drive device of the radial positioning mechanism 2, a second rotary drive device of the clamping mechanism 3, and external welding equipment via a controller.

[0025] The radial positioning mechanism 2 includes a driving member 21, a plurality of linkage members 22 arranged circumferentially around the driving member 21, and a plurality of supporting members 23 connected to each linkage member 22. The driving member 21 drives each supporting member 23 to move synchronously radially through each linkage member 22, so as to support and establish radial center positioning against the wave spring 100 to be welded from the inner circumference. The clamping mechanism 3 includes a pressure plate 31 that is openable and closable on the fixture base plate 1, and the pressure plate 31 is provided with an upper clearance opening 311. The upper clearance opening 311 and the lower clearance opening 11 are arranged opposite to each other to form a welding channel. A plurality of pressure blocks 32 are detachably provided on the side of the pressure plate 31 facing the fixture base plate 1. The pressure blocks 32 are used to press against the wave spring 100 to be welded during welding, so that its two end faces to be welded are on the same welding plane. In this invention, the welding execution end (such as a laser head) can approach the part to be welded through the welding channel formed by the upper clearance opening 311 and the lower clearance opening 11, which facilitates observation of the weld and removal of welding slag.

[0026] In this embodiment, a pre-positioning element 12 is detachably provided on the fixture base plate 1. In this embodiment, the pre-positioning element 12 is a positioning pin, which is threaded into a threaded hole provided on the fixture base plate 1. The pre-positioning elements 12 are spaced apart around the outer periphery of the radial positioning mechanism 2. The wave spring 100 to be welded is located between the pre-positioning element 12 and the radial positioning mechanism 2. The pre-positioning element 12 is used to limit the position of the wave spring 100 to be welded before the tensioning element 23 is activated. In this embodiment, the pre-positioning elements 12 are located on both sides of the lower clearance opening 11. The pre-positioning elements 12 serve as a coarse limit and maintain a gap to allow automatic feeding, without applying pressure to the wave spring 100 to be welded. In this embodiment, the pressure plate 31 has a through hole for avoiding the pre-positioning element 12.

[0027] In this embodiment, the driving component 21 includes an axially moving component. The linkage component 22 includes a first linkage plate and a second linkage plate, which are rotatably connected by a pivot. One end of the first linkage plate is hinged to the axially moving component, and the other end is hinged to the corresponding support component 23. When the axially moving component moves axially, it drives the corresponding support component 23 to move radially via the first linkage plate. The number of linkage components 22 and support components 23 can be three, four, or six sets, and they are evenly arranged along the circumference of the driving component 21.

[0028] like Figure 3 The automated welding device for wave springs shown includes a lead screw 211 and a lead screw nut 212 as axial moving parts. The lead screw 211 is vertically oriented, and the lead screw 211 and lead screw nut 212 are threaded together. The lead screw 211 is connected to the first rotary drive device via a worm gear mechanism. One end of the second linkage plate is hinged to a bearing seat at the end of the lead screw 211, and the other end is slidably engaged with a through groove on the vertically oriented support member 23. The worm gear mechanism provides deceleration and self-holding functions, preventing accidental retraction of the support member 23 during sudden shutdowns. Simultaneously, the lead screw 211 and lead screw nut 212 have high transmission and positioning accuracy, ensuring synchronous internal support of the support member. The first rotary drive device is a servo drive motor, and its output end is connected to the lead screw 211.

[0029] like Figure 4 The automated welding device for wave springs shown has a radial guide portion 13 on the fixture base plate 1. Each clamping member 23 moves along its corresponding radial guide portion 13. A contact block is detachably provided on the side of the clamping member 23 facing the wave spring 100 to be welded. Wave springs with different inner diameters can be covered by replacing contact blocks of different thicknesses. In this embodiment, the radial guide portion 13 is a guide groove on the fixture base plate 1, and the clamping member 23 is vertically mounted on the fixture base plate 1. The lower end of the clamping member 23 is slidably connected within the radial guide portion 13 (groove). Each clamping member 23 moves along its corresponding radial guide portion 13 to limit its movement trajectory and prevent slippage.

[0030] In this embodiment, the fixture base plate 1 and the pressure plate 31 are hinged together by a hinge assembly 4. The pressure plate 31 can be flipped relative to the fixture base plate 1 via the hinge assembly 4. The pressure plate 31 is connected to a gear transmission component 5, and the axis of the gear transmission component 5 is coaxial with the flipping axis of the hinge assembly 4. The pressure plate 31 is connected to a second rotary drive device via the gear transmission component 5, and the second rotary drive device is used to drive the pressure plate 31 to open and close relative to the fixture base plate 1. In this embodiment, the hinge assembly 4 is a hinge, and the hinge axis of the hinge assembly 4 is coaxial with the axis of the gear transmission component 5. The second rotary drive device is a servo motor, and the second rotary drive device is connected to the gear transmission component 5 through a drive gear meshing with it.

[0031] In this embodiment, the pressure plate 31 is provided with a clearance groove 33 for the radial positioning mechanism 2 to pass through. Pressure blocks 32 are arranged along the outer periphery of the clearance groove 33, and are arranged in pairs on both sides of the radial positioning mechanism 2. The opposing surfaces of the paired pressure blocks 32 are respectively provided with pressure-applying inclined surfaces 321, which are used to apply axial and radial pressure to both ends of the wave spring 100 to be welded, so that the two ends of the wave spring 100 to be welded are axially aligned. The fixture base plate 1 is provided with a pressure block through groove for accommodating the pressure blocks 32, which is used to receive the lower part of the pressure blocks 32 when the pressure plate 31 is closed.

[0032] In this embodiment, the pressure plate 31 is provided with limiting plates 34, and two limiting plates 34 are respectively provided on both sides of the upper clearance opening 311. The limiting plates 34 are provided with V-shaped limiting grooves 341. The two ends of the wave spring 100 to be welded are respectively accommodated in the V-shaped limiting grooves 341 of the two limiting plates 34. The V-shaped limiting grooves 341 radially limit the two ends of the wave spring 100 to be welded, so that the two ends to be welded are radially aligned. When the pressure plate 31 is closed, the limiting plates 34 are placed in the lower clearance opening 11.

[0033] In this embodiment, a spring plunger is provided on the pressure plate 31 or the fixture base plate 1. The spring plunger is positioned opposite to the wave spring 100 to be welded. When the pressure plate 31 is closed, the spring plunger applies a controlled elastic preload to the wave spring 100 to be welded. The spring plunger is an elastic pin, and in this embodiment, the spring plunger is positioned corresponding to the crest or trough of the wave spring 100 to be welded.

[0034] In this embodiment, the controller reads the torque signal of the first rotary drive device, the displacement signal of the lead screw nut 212, or the pressure signal of the tensioning member 23. When any of the above signals reaches the predetermined inner support position or clamping threshold, the drive is stopped to avoid the thin-walled workpiece from deforming due to excessive inner support.

[0035] In this embodiment, the fixture base plate 1 may also be provided with a clearance groove for avoiding the automatic loading and unloading gripper and a workpiece positioning sensor (such as an inductive proximity switch). The clearance groove avoids the gripper, and the workpiece positioning sensor is used to confirm whether the workpiece is installed in place.

[0036] The working principle of this embodiment is as follows: The controller controls the tensioning member 23 of the radial positioning mechanism 2 to retract to the center position, the pressure plate 31 of the clamping mechanism 3 to open, and confirms that there are no workpieces left in the fixture.

[0037] The external loading and unloading actuator places the open-ended wave spring 100 to be welded onto the fixture base plate 1, aligning its two ends to be welded with the lower clearance opening 11, and the pre-positioning component 12 completes the coarse positioning; the workpiece positioning sensor outputs a positioning signal. The first rotary drive device drives the lead screw 211 to rotate via the worm gear mechanism, and the lead screw nut 212 moves axially and drives the four clamping components 23 to move radially outward synchronously until the contact block abuts against the inner circumferential wall of the wave spring and reaches the predetermined position or clamping threshold. At this time, the radial positioning mechanism 2 is in the inner support state.

[0038] The second rotary drive device, via gear transmission component 5, drives the pressure plate 31 to close around the rotation axis of the hinge assembly 4. The pressure-applying inclined surface 321 of the pressure block 32 simultaneously applies axial and radial pressure to both ends of the wave spring 100 to be welded. At the same time, the two ends of the wave spring to be welded are guided into the V-shaped limiting groove 341 of the limiting plate 34. The V-shaped limiting groove 341 guides the two ends of the wave spring to be welded to complete radial alignment. Simultaneously, the spring plunger provides controlled elastic preload, aligning the two end faces to be welded in the thickness direction and keeping the welding channel open. The controller sends an permission signal to the external welding equipment, which then welds the two end faces of the wave spring to be welded through the lower clearance port 11 and / or the upper clearance port 311. After welding is completed and the safety delay is met, the controller first opens the pressure plate 31, and then synchronously retracts the tensioning component 23. The external loading and unloading actuator removes the welded wave spring and enters the next cycle.

[0039] The above embodiments are exemplary and are intended to illustrate the technical concept and features of the present invention, so that those skilled in the art can understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automated welding device for wave springs, characterized in that, include: The fixture base plate (1) has a lower clearance opening (11) on it. A radial positioning mechanism (2) is provided on the base plate (1) of the fixture; the radial positioning mechanism (2) includes a driving member (21), a plurality of linkage members (22) arranged circumferentially along the driving member (21), and a plurality of support members (23) connected to each linkage member (22); the driving member (21) drives each support member (23) to move synchronously in the radial direction through each linkage member (22) so as to support and establish radial center positioning against the wave spring to be welded from the inner circumference; The clamping mechanism (3) includes a pressure plate (31) that can be opened and closed on the fixture base plate (1). The pressure plate (31) is provided with an upper clearance opening (311) and a lower clearance opening (11) that are arranged opposite to each other. The pressure plate (31) is provided with a plurality of pressure blocks (32) detachably on the side facing the fixture base plate (1). The pressure blocks (32) are used to press against the wave spring to be welded during welding so that its two end faces to be welded are on the same welding plane.

2. The automated welding device for wave springs according to claim 1, characterized in that: The fixture base plate (1) is detachably provided with a prepositioning member (12); the prepositioning member (12) is spaced around the outer periphery of the radial positioning mechanism (2), and the wave spring to be welded is located between the prepositioning member (12) and the radial positioning mechanism (2). The prepositioning member (12) is used to limit the position of the wave spring to be welded before the tensioning member (23) moves.

3. The automated welding device for wave springs according to claim 1, characterized in that: The driving component (21) includes an axial moving component; the linkage component (22) includes a first linkage plate and a second linkage plate, which are rotatably connected by a rotating shaft; one end of the first linkage plate is hinged to the axial moving component, and the other end is hinged to the corresponding support component (23); when the axial moving component moves axially, it drives the corresponding support component (23) to move radially via the first linkage plate.

4. The automated welding device for wave springs according to claim 3, characterized in that: The axial moving component includes a lead screw (211) and a lead screw nut (212); the lead screw (211) is arranged in the vertical direction, and the lead screw (211) and the lead screw nut (212) are threaded together; the lead screw (211) is connected to the first rotary drive device via a worm gear mechanism; one end of the second linkage plate is hinged to the bearing seat provided at the end of the lead screw (211), and the other end is slidably engaged with the through groove provided in the vertical direction on the support member (23).

5. The automated welding device for wave springs according to claim 1, characterized in that: The fixture base plate (1) is provided with a radial guide portion (13); each of the support members (23) moves along the corresponding radial guide portion (13); the support member (23) is provided with a contact block detachably on the side facing the wave spring to be welded.

6. The automated welding device for wave springs according to claim 1, characterized in that: The fixture base plate (1) and the pressure plate (31) are hinged together by a hinge assembly (4); the pressure plate (31) can be flipped relative to the fixture base plate (1) via the hinge assembly (4); the pressure plate (31) is connected to a gear transmission component (5), the axis of the gear transmission component (5) is coaxial with the flipping axis of the hinge assembly (4); the pressure plate (31) is connected to a second rotary drive device via the gear transmission component (5), the second rotary drive device is used to drive the pressure plate (31) to open and close relative to the fixture base plate (1).

7. The automated welding device for wave springs according to claim 1, characterized in that: The pressure plate (31) is provided with a clearance groove (33) through which the radial positioning mechanism (2) passes; the pressure block (32) is arranged along the outer periphery of the clearance groove (33), and the pressure blocks (32) are arranged in pairs on both sides of the radial positioning mechanism (2); the opposite surfaces of the paired pressure blocks (32) are respectively provided with pressure-applying inclined surfaces (321), and the pressure-applying inclined surfaces (321) are used to apply axial and radial pressure to the two ends of the wave spring to be welded, so that the two ends of the wave spring to be welded are axially aligned.

8. The automated welding device for wave springs according to claim 1, characterized in that: The pressure plate (31) is provided with a limiting plate (34), and the two limiting plates (34) are respectively located on both sides of the upper clearance opening (311); the limiting plate (34) is provided with a V-shaped limiting groove (341), and the two ends of the wave spring to be welded are respectively housed in the V-shaped limiting groove (341) of the two limiting plates (34). The V-shaped limiting groove (341) radially limits the two ends of the wave spring to be welded, so that the two ends to be welded are radially aligned.

9. The automated welding device for wave springs according to claim 1, characterized in that: A spring plunger is provided on the pressure plate (31) or the fixture base plate (1), and the spring plunger is arranged opposite to the wave spring to be welded; when the pressure plate (31) is closed, the spring plunger applies a controlled elastic preload to the wave spring to be welded.

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