A stainless steel folded wave filter core welding device

Abstract

A stainless steel wave filter core welding device, comprising an inner support mechanism and a clamp coil, the inner support mechanism is used for supporting the inner hole of the wave filter core, the radial size of the inner support mechanism is adjustable, the outer wall of the wave filter core is surrounded by the clamp coil, and the clamp coil is driven to rotate.The present application can effectively constrain the outer circular shape of the filter core by surrounding the stainless steel wave filter core with a clamp coil on the periphery, so that it maintains a stable cylindrical structure, and cooperates with the internally arranged inner support mechanism to form a stable structure with internal and external two-way clamping, ensures that the straight seam butt joint always maintains a uniform welding gap, effectively suppresses thermal deformation during welding, and can significantly reduce residual deformation after welding, and the rotatable design of the clamp coil can rotate flexibly with the movement of the welding gun, completely avoiding the interference of the traditional fixed clamp on the travel path of the welding gun.

Description

Technical Field

[0001] This invention belongs to the field of welding technology, specifically referring to a welding device for stainless steel corrugated filter elements. Background Technology

[0002] The manufacturing process of stainless steel corrugated filter elements is quite complex. First, stainless steel sheets are pressed into a specific wavy pattern using a corrugating machine. Then, they are precisely wound into a cylindrical structure, and finally welded to achieve the desired shape. The most critical and challenging step in this process is the straight-seam welding along the cylinder's generatrix. Due to the inherent properties of stainless steel and the structural changes brought about by the corrugating process, the welding operation faces numerous challenges.

[0003] Stainless steel sheets that have undergone corrugation processing have greater elasticity, making it difficult to maintain a stable gap at the straight seam where cylinders meet during welding, resulting in poor weld consistency. Furthermore, the heat input during welding easily causes springback deformation, making it difficult to control the post-weld structural dimensions. In addition, uneven shrinkage in the heat-affected zone further exacerbates deformation, affecting the roundness and sealing performance of the filter element. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a stainless steel corrugated filter element welding device, which at least partially solves the above problems.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a stainless steel corrugated filter element welding device, which includes a worktable with a sliding part and a fixed part. The worktable is used for welding operations, and the sliding part can move horizontally to change the size of the working space and facilitate material loading.

[0006] An inner support mechanism is provided on the workbench and configured to pass through the inner hole of the folded filter element and provide support. The radial dimension of the inner support mechanism is adjustable.

[0007] The inner ring is fitted around the outside of the corrugated filter element;

[0008] The outer ring is rotatably mounted on the inner ring and is coaxially arranged with the inner ring.

[0009] A protrusion is fixedly disposed on the outer ring sidewall. The end of the protrusion near the center of the inner ring is arc-shaped, and the radius of the arc is adapted to the inner ring diameter.

[0010] A clamp coil is disposed on the side wall of the protrusion and is used to surround and fix the outer wall of the pleated filter element.

[0011] Furthermore, the clamp coils are configured in multiple groups and distributed circumferentially along the pleated filter element; a fixing plate is provided at the end of the clamp coil away from the outer ring.

[0012] Furthermore, the inner support mechanism includes an adjusting plate, a directional plate, and an inner support rod. The adjusting plate is rotatably mounted on the worktable, and the directional plate is coaxially mounted on the side of the adjusting plate near the inner ring. The adjusting plate has a circumferential array of inclined grooves, and the directional plate has a plurality of corresponding radial grooves. The inner support rod is slidably mounted in the inclined grooves and the radial grooves, and the adjusting plate can slide horizontally relative to the inner support rod.

[0013] Furthermore, the centripetal groove points to the center of the directional disk, and the inclined groove is set at an angle with the centripetal groove. When the adjusting disk rotates, the inclined groove drives the inner support rod to move radially along the centripetal groove to adjust the support diameter of the inner support mechanism.

[0014] Furthermore, a center block is provided at the center of the directional disc, and a first spring is connected between the center block and the inner support rod.

[0015] Furthermore, each of the inner support rods has a connecting block at the center of the end away from the directional plate. The connecting block is connected to the inner support rod through a telescopic rod. A second spring is wrapped around the telescopic rod, and the two ends of the second spring abut against the inner support rod and the connecting block, respectively.

[0016] Furthermore, a screw is provided on the side of the worktable near the adjustment plate, and the center of the adjustment plate is threadedly connected to the screw.

[0017] Furthermore, a centering shaft is provided through the sliding part of the worktable, the centering shaft passes through the center of the fixed disk, the fixed disk is mounted on the worktable through the centering shaft, and can rotate around the centering shaft.

[0018] Furthermore, a centering shaft is provided through the sliding part of the worktable, and the end of the centering shaft is located at the center of the connecting block to support the connecting block and each inner support rod.

[0019] The beneficial effects of this invention are as follows: By setting a clamp coil around the stainless steel corrugated filter element on the periphery, the outer circular shape of the filter element can be effectively constrained, maintaining a stable cylindrical structure. Combined with the internal support mechanism, a stable structure with bidirectional clamping is formed, ensuring that the welding gap at the straight seam joint remains uniform. This dual fixing method not only effectively suppresses thermal deformation during welding but also significantly reduces residual deformation after welding, thereby improving welding quality and product precision. In addition, the clamp coil adopts a rotatable design, which, while ensuring the positioning function, can rotate flexibly with the movement of the welding torch, completely avoiding the interference of traditional fixing fixtures on the movement path of the welding torch, making the welding process smoother and more efficient. Attached Figure Description

[0020] Figure 1 This is a diagram showing the working state of the stainless steel corrugated filter element welding device according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the stainless steel corrugated filter element welding device according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram showing the connection relationship between the clamp coil and the outer ring;

[0023] Figure 4 This is a front view showing the connection between the clamp coil and the outer ring.

[0024] Figure 5 for Figure 4 Sectional view of AA;

[0025] Figure 6 This is an exploded view of the internal support mechanism.

[0026] Among them, 1. workbench, 2. screw, 3. internal support mechanism, 4. clamp coil, 5. centering shaft, 6. inner ring, 7. outer ring, 8. fixed plate, 9. protrusion, 10. adjusting plate, 11. directional plate, 12. internal support rod, 13. inclined groove, 14. centripetal groove, 15. center block, 16. first spring, 17. connecting block, 18. telescopic rod, 19. second spring.

[0027] In the appendix Figure 1 In the text, M represents the corrugated filter element to be welded.

[0028] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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, they should not be construed as limitations on this invention.

[0031] like Figure 1 and Figure 3As shown in the figure, the stainless steel corrugated filter element M welding device proposed in this embodiment of the invention includes a worktable 1 with a sliding part and a fixed part and an inner support mechanism 3. The worktable 1 is used for welding operations. The sliding part of the worktable 1 can move horizontally, and the worktable has a larger working space, which facilitates the provision of space for loading and unloading operations.

[0032] The inner support mechanism 3 is located on the workbench 1 and is configured to pass through the inner hole of the corrugated filter element M and provide support. The radial dimension of the inner support mechanism 3 is adjustable. During the welding operation, the corrugated filter element M is wrapped around the surface of the inner support mechanism 3. The inner support mechanism 3 is pre-adjusted so that its maximum radius matches the setting radius of the corrugated filter element M, thereby winding the corrugated filter element M into the required cylindrical shape.

[0033] After the pleated filter element M is covered on the inner support mechanism 3, an inner ring 6 is fitted onto the pleated filter element M. The inner ring 6 should be selected with a hole diameter that matches the maximum outer diameter of the pleated filter element M. Ideally, the hole diameter of the inner ring 6 is the same as the maximum outer diameter of the pleated filter element M. An outer ring 7 rotates coaxially on the inner ring 6. The outer ring 7 is equipped with multiple hollow grooves to facilitate hand rotation. Because the inner ring 6 and the pleated filter element M are fitted together, there is a certain friction between them. Therefore, the rotation of the outer ring 7 will not drive the inner ring 6 to rotate. At the same time, in order to facilitate the insertion of the inner ring 6 and reduce the influence of friction on the insertion of the inner ring 6, the inlet end of the inner ring 6 is chamfered so that the pleated filter element M can be inserted into the inner hole of the inner ring 6.

[0034] The outer ring 7 has a protrusion 9 on its side wall, such as Figures 3-5 As shown, the end of the protrusion 9 near the center of the inner ring 6 is arc-shaped, and the radius of the arc is adapted to the aperture of the inner ring 6. When the outer ring 7 rotates, the arc of the protrusion 9 always rotates in contact with the outer wall of the corrugated filter element M. A clamping coil 4 is provided on the side wall of the protrusion 9. The clamping coil 4 is also wrapped around and fixed on the outer wall of the corrugated filter element M. The inner side of the clamping coil 4 has the same aperture as the inner ring 6. The clamping coil 4 is in contact with the side wall of the corrugated filter element M. Under the double clamping action of the clamping coil 4 and the inner support mechanism 3, the inner wall of the corrugated filter element M is supported and the outer wall is fixed, which effectively constrains the outer circular shape of the filter element, keeps it in a stable cylindrical structure, reduces the problem of stress deformation and heat deformation during welding, and keeps a stable gap at the butt joint.

[0035] In addition, the clamp coil 4 can rotate with the outer ring 7. During welding, one hand holds the hollow groove on the outer ring 7 and the other hand holds the welding torch, so that the welding torch moves linearly along the straight seam. When the welding torch moves close to the clamp coil 4, the outer ring 7 is rotated so that the clamp coil 4 rotates to avoid it, thereby avoiding interference with the movement path of the welding torch. While ensuring the positioning function, it can also rotate flexibly with the movement of the welding torch, making the welding process smoother and more efficient.

[0036] In some embodiments, such as Figure 1and Figure 2 As shown, the clamp coil 4 is configured in multiple groups, with each group of clamp coil 4 arranged equidistantly around the filter element M and distributed circumferentially. A fixing plate 8 is provided at the end of the clamp coil 4 away from the outer ring 7. The fixing plate 8 and the protrusion 9 on the outer ring 7 together restrict the two ends of the clamp coil 4, keeping the winding radius of the clamp coil 4 stable and limiting the filter element M to a relatively stable circular fluctuation range.

[0037] In some embodiments, such as Figure 6 As shown, the inner support mechanism 3 includes an adjustment plate 10, an orientation plate 11, and an inner support rod 12. The adjustment plate 10 is rotatably mounted on the worktable 1. The orientation plate 11 is coaxially mounted on the side of the adjustment plate 10 near the inner ring 6. The adjustment plate 10 has a circumferential array of inclined grooves 13. The orientation plate 11 has a plurality of centripetal grooves 14 correspondingly mounted. The inner support rod 12 is slidably mounted in the inclined grooves 13 and the centripetal grooves 14. The adjustment plate 10 can slide horizontally relative to the inner support rod 12. The centripetal grooves 14 point to the center of the orientation plate 11. The inclined grooves 13 and the centripetal grooves 14 are set at an angle. When the adjustment plate 10 rotates, it drives the inner support rod 12 to move radially along the centripetal grooves 14 through the inclined grooves 13, thereby adjusting the support diameter of the inner support mechanism 3. After the adjustment is completed, the corrugated filter element M is wound and covered on the inner support rod 12. The number of inner support rods 12 is at least three sets. Three sets can complete the circular positioning. The more inner support rods 12 there are, the better the winding roundness of the corrugated filter element M.

[0038] In some embodiments, a center block 15 is provided at the center of the directional disk 11. A first spring 16 is connected between the center block 15 and the inner support rod 12. A connecting block 17 is provided at the center of the end of each inner support rod 12 away from the directional disk 11. The connecting block 17 is connected to the inner support rod 12 through a telescopic rod 18. A second spring 19 is arranged around the telescopic rod 18. The two ends of the second spring 19 abut against the inner support rod 12 and the connecting block 17, respectively. The first spring 16 and the second spring 19 always push the inner support rod 12 outward. Under the action of the centripetal groove 14 and the inclined groove 13, the inner support rod 12 is positioned. When adjusting the radius, to prevent the support diameter of the inner support rod 12 from floating due to the shaking of the adjusting plate 10, the first spring 16 and the second spring 19 can play a certain tensioning role, so that the adjusting plate 10 can only shake under a certain external force, which has a damping effect on the adjusting plate 10 and ensures the stability of the support diameter. The telescopic rod 18 can move with the inner support rod 12, and while adjusting the support diameter of the inner support rod 12, it also plays a certain supporting role for the inner support rod 12, so that the spacing between each inner support rod 12 is the same, so as to maintain the circle formed by the inner support rod 12.

[0039] In some embodiments, such as Figure 1 and Figure 2As shown, a screw 2 is provided on the side of the worktable 1 near the adjusting plate 10. The center of the adjusting plate 10 is threaded to the screw 2. Nuts (not shown in the figure) can be arranged on both sides of the adjusting plate 10. When the adjusting plate 10 rotates, it will move relative to the screw 2 and slide relative to the inner support rod 12. However, the inner support rod 12 will not disengage from the adjusting plate 10. The screw 2 and the nut can keep the rotating adjusting plate 10 at the current angle position, so that the inner support diameter remains stable.

[0040] In some embodiments, a centering shaft 5 is provided through the sliding part of the worktable 1. The centering shaft 5 passes through the center of the fixed plate 8. The fixed plate 8 is mounted on the worktable 1 through the centering shaft 5 and can rotate around the centering shaft 5. The centering shaft 5 provides support for the fixed plate 8 without restricting the rotation of the fixed plate 8, so that the operator can rotate the clamp coil 4 as needed during welding operations to avoid obstructing the welding torch head.

[0041] In some embodiments, a centering shaft 5 is provided through the sliding part of the worktable 1. The end of the centering shaft 5 is located at the center of the connecting block 17. The centering shaft 5 is used to support the connecting block 17 and each inner support rod 12. After the connecting block 17 is supported by the centering shaft 5, both the left and right ends of the inner support rod 12 are supported and fixed to avoid deflection deformation and improve the accuracy of the wound folded filter element M.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A stainless steel folded wave filter core welding apparatus characterized by comprising: The application relates to a workbench (1) with a sliding part and a fixed part. An inner supporting mechanism (3) is arranged on the workbench (1) and is configured to penetrate into the inner hole of the wave-shaped filter core and provide support; the radial dimension of the inner supporting mechanism (3) is adjustable; the inner supporting mechanism (3) comprises a plurality of inner supporting rods (12), and the center of the end part of each inner supporting rod (12) is surrounded by a connecting block (17); An inner ring (6) is arranged on the outer part of the wave-shaped filter core; An outer ring (7) is arranged on the inner ring (6) in a rotating mode and is coaxially arranged with the inner ring (6); A convex block (9) is fixedly arranged on the side wall of the outer ring (7); one end of the convex block (9) close to the center of the inner ring (6) is in an arc shape, and the radius of the arc shape is matched with the hole diameter of the inner ring (6); A clamping coil (4) is arranged on the side wall of the convex block (9) and is used for surrounding and fixing the outer wall of the wave-shaped filter core; The clamping coil (4) is arranged in multiple groups and is distributed along the circumferential direction of the wave-shaped filter core; one end of the clamping coil (4) away from the outer ring (7) is provided with a fixing disc (8); A centering shaft (5) is arranged on the sliding part of the workbench (1) in a penetrating mode; the end part of the centering shaft (5) is arranged on the center of the connecting block (17) and is used for supporting the connecting block (17) and the inner supporting rods (12). The inner supporting mechanism (3) further comprises an adjusting disc (10) and a directional disc (11); the adjusting disc (10) is arranged on the workbench (1) in a rotating mode; the directional disc (11) is coaxially arranged on the side of the adjusting disc (10) close to the inner ring (6); a plurality of inclined grooves (13) are arranged on the adjusting disc (10) in a circumferential array mode; a plurality of centripetal grooves (14) are correspondingly arranged on the directional disc (11); the inner supporting rods (12) are arranged in the inclined grooves (13) and the centripetal grooves (14) in a sliding mode; and the adjusting disc (10) can slide horizontally relative to the inner supporting rods (12).

2. The stainless steel folded wave filter core welding apparatus according to claim 1, characterized by: The centripetal grooves (14) are directed to the center of the directional disc (11); the included angle between the inclined grooves (13) and the centripetal grooves (14) is arranged; when the adjusting disc (10) rotates, the inner supporting rods (12) are driven to move radially along the centripetal grooves (14) through the inclined grooves (13), so as to adjust the supporting diameter of the inner supporting mechanism (3).

3. The stainless steel folded wave filter core welding apparatus of claim 2, wherein: The center of the directional disc (11) is provided with a center block (15); the first spring (16) is connected between the center block (15) and the inner supporting rods (12).

4. The stainless steel folded wave filter core welding apparatus of claim 2, wherein: The connecting block (17) and the inner supporting rods (12) are connected through a telescopic rod (18); the second spring (19) is arranged on the telescopic rod (18) in a surrounding mode; and the two ends of the second spring (19) are respectively abutted on the inner supporting rods (12) and the connecting block (17).

5. The stainless steel folded wave filter core welding apparatus of claim 2, wherein: The side of the workbench (1) close to the adjusting disc (10) is provided with a screw rod (2); and the center of the adjusting disc (10) is threadedly connected on the screw rod (2).

6. The stainless steel folded wave filter core welding apparatus of claim 2, wherein: ​

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