Stainless steel corrugated filter element welding device

Abstract

A stainless steel wave folding filter element welding device comprises an inner supporting mechanism and a hoop coil, the inner supporting mechanism is used for supporting an inner hole of a wave folding filter element, the radial size of the inner supporting mechanism is adjustable, the hoop coil is arranged on the outer wall of the wave folding filter element in a surrounding mode, and the hoop coil is driven to rotate. The hoop coil capable of surrounding the stainless steel folded wave filter element is arranged on the periphery, the shape of the outer circle of the filter element can be effectively restrained, the filter element is kept in a stable cylinder structure, the inner supporting mechanism arranged inside is matched, a stable structure for inner and outer bidirectional clamping is formed, it is ensured that uniform and consistent welding gaps are kept at the straight seam butt joint all the time, and the welding quality is improved. Thermal deformation in the welding process is effectively restrained, residual deformation after welding can be remarkably reduced, the hoop coil designed in a rotatable mode can flexibly rotate along with movement of the welding gun, and interference of a traditional fixing clamp on the advancing path of the welding gun is completely avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, and in particular relates to a stainless steel pleated filter element welding device. Background Art

[0002] The manufacturing process for stainless steel pleated filter elements is complex. First, the stainless steel sheet is pressed into a specific wave pattern using a pleating machine. The sheet is then precision-wound into a cylindrical structure, and finally welded to finalize the 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 caused by the pleating process, welding presents numerous challenges.

[0003] The high elasticity of stainless steel sheets after pleating makes it difficult to maintain a stable gap during welding, resulting in poor weld consistency. Furthermore, the heat input from welding can easily cause springback deformation, making it difficult to control the dimensions of the structure after welding. Furthermore, uneven shrinkage in the heat-affected zone of the weld further exacerbates deformation, affecting the roundness and sealing performance of the filter element. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a stainless steel pleated 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 pleated filter element welding device, comprising a workbench having a sliding portion and a fixed portion, the workbench being used for welding operations, and the sliding portion being capable of horizontal movement to change the size of the working space and facilitate material loading; An internal support mechanism is provided on a workbench and is configured to penetrate into the inner hole of the pleated filter element and provide support, wherein the radial dimension of the internal support mechanism is adjustable; An inner ring is sleeved on the outside of the pleated filter element; An outer ring is rotatably disposed on the inner ring and is coaxially disposed with the inner ring; A protrusion is fixedly provided on the side wall of the outer ring, wherein one end of the protrusion close to the center of the inner ring is arc-shaped, and the radius of the arc is adapted to the aperture of the inner ring; The clamp coil is arranged on the side wall of the protrusion and is used for surrounding and fixing the outer wall of the pleated filter element.

[0006] Furthermore, the clamp coils are configured into multiple groups and distributed along the circumference of the pleated filter element; a fixing disk is provided at one end of the clamp coil away from the outer ring.

[0007] Furthermore, the internal support mechanism includes an adjustment disk, a directional disk and an internal support rod. The adjustment disk is rotatably arranged on the workbench, the directional disk is coaxially arranged on the side of the adjustment disk close to the inner ring, the adjustment disk is provided with an oblique groove in a circumferential array, and the directional disk is correspondingly provided with a plurality of centripetal grooves. The internal support rod is slidably arranged in the oblique groove and the centripetal groove, and the adjustment disk can slide horizontally relative to the inner support rod.

[0008] Furthermore, the centripetal groove points to the center of the directional disk, and the angle between the oblique groove and the centripetal groove is set. When the adjustment disk rotates, the inner support rod is driven by the oblique groove to move radially along the centripetal groove to adjust the support diameter of the inner support mechanism.

[0009] Furthermore, a central block is provided at the center of the directional disk, and a first spring is connected between the central block and the inner support rod.

[0010] Furthermore, a connecting block is provided at the center of one end of each inner support rod away from the directional disk, and the connecting block is connected to the inner support rod by a telescopic rod. A second spring is provided around the telescopic rod, and the two ends of the second spring respectively abut against the inner support rod and the connecting block.

[0011] Furthermore, a screw rod is provided on one side of the workbench close to the adjustment disk, and the center of the adjustment disk is threadedly connected to the screw rod.

[0012] Furthermore, a centering shaft is provided on the sliding portion of the workbench, and the centering shaft passes through the center of the fixed disk. The fixed disk is installed on the workbench through the centering shaft and can rotate around the centering shaft.

[0013] Furthermore, a centering shaft is provided through the sliding portion of the workbench, and the end of the centering shaft is provided at the center of the connecting block for supporting the connecting block and each inner support rod.

[0014] The beneficial effects achieved by the present invention are as follows: by arranging a clamp coil on the periphery that can surround the stainless steel pleated filter element, the outer circular shape of the filter element can be effectively constrained so that it maintains a stable cylindrical structure, and then combined with the internal support mechanism arranged inside, a stable structure with internal and external bidirectional clamping is formed, ensuring that the straight seam joint always maintains a uniform and consistent welding gap. This double fixing method can not only effectively suppress thermal deformation during welding, but also significantly reduce residual deformation after welding, thereby improving welding quality and product accuracy; in addition, the clamp coil adopts a rotatable design, which can flexibly rotate with the movement of the welding gun while ensuring the positioning function, completely avoiding the interference of traditional fixing fixtures on the welding gun's travel path, making the welding process smoother and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a working state diagram of the stainless steel pleated filter element welding device according to an embodiment of the present invention; Figure 2 This is a schematic structural diagram of a stainless steel pleated filter element welding device according to an embodiment of the present invention; Figure 3 Schematic diagram of the connection between the clamp coil and the outer ring; Figure 4 It is a front view of the connection relationship between the clamp coil and the outer ring; Figure 5 for Figure 4 Cross-sectional view of AA; Figure 6 This is an exploded diagram of the internal support mechanism.

[0016] Among them, 1. workbench, 2. screw, 3. internal support mechanism, 4. clamp coil, 5. centering shaft, 6. inner ring, 7. outer ring, 8. fixed disk, 9. bump, 10. adjustment disk, 11. directional disk, 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.

[0017] In the attached Figure 1 In the figure, M represents the pleated filter element to be welded.

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention but do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0021] like Figure 1 and Figure 3As shown, a stainless steel pleated filter element M welding device proposed in an embodiment of the present invention includes a workbench 1 with a sliding part and a fixed part and an internal support mechanism 3. The workbench 1 is used for welding operations. The sliding part of the workbench 1 can move horizontally, and the working space of the workbench is larger, which is convenient for providing space for loading and unloading operations.

[0022] The internal support mechanism 3 is provided on the workbench 1 and is configured to penetrate the inner hole of the pleated filter element M and provide support. The radial size of the internal support mechanism 3 is adjustable. During the welding operation, the pleated filter element M is wrapped on the surface of the internal support mechanism 3. The internal support mechanism 3 is pre-adjusted so that its maximum radius is adapted to the set radius of the pleated filter element M, so that the pleated filter element M is wound into the required cylindrical shape.

[0023] After the pleated filter element M is covered on the inner support mechanism 3, an inner ring 6 is installed on the pleated filter element M. The aperture of the inner ring 6 should be selected to match the maximum outer diameter of the pleated filter element M. Under ideal conditions, the aperture of the inner ring 6 is the same as the maximum outer diameter of the pleated filter element M. An outer ring 7 is coaxially rotated on the inner ring 6. The outer ring 7 is provided with multiple hollow grooves for easy hand-held rotation. Because the inner ring 6 and the pleated filter element M are installed in a close fit, there is a certain friction between the two. Therefore, when the outer ring 7 rotates, it 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 provided with a chamfer so that the pleated filter element M can be included in the inner hole of the inner ring 6.

[0024] The side wall of the fixed outer ring 7 is provided with a protrusion 9, such as Figure 3-Figure 5 As shown, the end of the protrusion 9 close to 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 fits on the outer wall of the pleated filter element M and rotates. A clamp coil 4 is provided on the side wall of the protrusion 9, and the clamp coil 4 is also surrounded and fixed on the outer wall of the pleated filter element M. The inner side of the clamp coil 4 is the same as the aperture of the inner ring 6, and the clamp coil 4 fits the side wall of the pleated filter element M. Under the dual clamping action of the clamp coil 4 and the inner support mechanism 3, the inner wall of the pleated filter element M is propped up 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 problems of stress deformation and heat deformation during welding, and maintains a stable gap at the straight seam.

[0025] In addition, the clamp coil 4 can rotate with the outer ring 7. During welding operations, hold the hollow groove on the outer ring 7 with one hand and hold the welding gun with the other hand to move the welding gun linearly along the straight seam. When the welding gun moves close to the clamp coil 4, rotate the outer ring 7 to make the clamp coil 4 rotate to avoid it, thereby avoiding interference with the welding gun's travel path. While ensuring the positioning function, it can also rotate flexibly with the movement of the welding gun, making the welding process smoother and more efficient.

[0026] In some embodiments, as Figure 1and Figure 2 As shown, the clamp coils 4 are configured into multiple groups, and each group of clamp coils 4 is equidistantly arranged around the injection molding and distributed along the circumference of the pleated filter element M. A fixed disk 8 is provided at one end of the clamp coil 4 away from the outer ring 7. The fixed disk 8 and the protrusion 9 on the outer ring 7 jointly limit the two ends of the clamp coil 4, so that the winding radius of the clamp coil 4 remains stable, so that the pleated filter element M is limited to a relatively stable circular fluctuation range.

[0027] In some embodiments, as Figure 6 As shown, the internal support mechanism 3 includes an adjustment disk 10, a directional disk 11 and an internal support rod 12. The adjustment disk 10 is rotatably arranged on the workbench 1, and the directional disk 11 is coaxially arranged on the side of the adjustment disk 10 close to the inner ring 6. The adjusting disk 10 is provided with an inclined groove 13 in a circumferential array, and the directional disk 11 is correspondingly provided with a plurality of centripetal grooves 14. The inner support rod 12 is slidably arranged in the inclined groove 13 and the centripetal groove 14. The adjustment disk 10 can slide horizontally relative to the inner support rod 12, and the centripetal groove 14 points to the center of the directional disk 11. The angle between the inclined groove 13 and the centripetal groove 14 is set. When the adjustment disk 10 rotates, the inner support rod 12 is driven to move radially along the centripetal groove 14 through the inclined groove 13, thereby adjusting the support diameter of the internal support mechanism 3. After the adjustment is completed, the pleated filter element M is wound and covered on the inner support rod 12. The number of inner support rods 12 is at least three groups, and three groups can complete circular positioning. The more inner support rods 12 there are, the better the winding roundness of the pleated filter element M.

[0028] In some embodiments, a center block 15 is provided at the center of the directional disk 11, and 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 one end of each inner support rod 12 away from the directional disk 11. The connecting block 17 and the inner support rod 12 are connected by a telescopic rod 18. A second spring 19 is provided around the telescopic rod 18. The two ends of the second spring 19 are respectively in contact with the inner support rod 12 and the connecting block 17. The first spring 16 and the second spring 19 always push the inner support rod 12 outward, and the inner support rod 12 is positioned under the action of the centripetal groove 14 and the inclined groove 13. When the radius is adjusted, in order to prevent the support diameter of the inner support rod 12 from floating due to the shaking of the adjustment disk 10, the first spring 16 and the second spring 19 can play a certain tensioning role, so that the adjustment disk 10 can shake under a certain external force, and have a damping effect on the adjustment disk 10, thereby ensuring the stability of the support diameter, and the telescopic rod 18 can move with the inner support rod 12. 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.

[0029] In some embodiments, as Figure 1 and Figure 2As shown, a screw 2 is provided on one side of the workbench 1 close to the adjusting disk 10. The center thread of the adjusting disk 10 is connected to the screw 2. Nuts (not shown in the drawings) can be provided on both sides of the adjusting disk 10. When the adjusting disk 10 rotates, it moves relative to the screw 2 and slides relative to the inner support rod 12, but the inner support rod 12 and the adjusting disk 10 do not separate. The screw 2 cooperates with the nut to keep the rotating adjusting disk 10 at the current angular position, so that the inner support diameter remains stable.

[0030] In some embodiments, a centering shaft 5 is provided on the sliding portion of the workbench 1, and the centering shaft 5 passes through the center of the fixed disk 8. The fixed disk 8 is installed on the workbench 1 through the centering shaft 5 and can rotate around the centering shaft 5. The centering shaft 5 supports the fixed disk 8, but does not limit the rotation of the fixed disk 8, so that during welding operations, the operator can rotate the clamp coil 4 as needed to avoid obstruction to the welding gun head.

[0031] In some embodiments, a centering shaft 5 is provided on the sliding portion of the workbench 1, and the end of the centering shaft 5 is provided 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, the left and right ends of the inner support rod 12 are supported and fixed to avoid deflection and deformation, thereby improving the accuracy of the pleated filter element M after winding.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A stainless steel pleated filter element welding device, characterized in that: include: A workbench (1) having a sliding portion and a fixed portion; An internal support mechanism (3) is provided on the workbench (1) and is configured to penetrate the inner hole of the pleated filter element and provide support, and the radial dimension of the internal support mechanism (3) is adjustable; An inner ring (6) is sleeved on the outside of the pleated filter element; An outer ring (7) is rotatably arranged on the inner ring (6) and is coaxially arranged with the inner ring (6); A protrusion (9) is fixedly arranged on the side wall of the outer ring (7), and one end of the protrusion (9) close to 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); The clamp coil (4) is arranged on the side wall of the protrusion (9) and is used to surround and fix the outer wall of the pleated filter element.

2. The stainless steel pleated filter element welding device according to claim 1, characterized in that: The clamp coils (4) are configured into multiple groups and distributed along the circumference of the pleated filter element; a fixing disk (8) is provided at one end of the clamp coil (4) away from the outer ring (7).

3. The stainless steel pleated filter element welding device according to claim 1, characterized in that: The inner support mechanism (3) comprises an adjustment disk (10), a directional disk (11) and an inner support rod (12); the adjustment disk (10) is rotatably arranged on the workbench (1); the directional disk (11) is coaxially arranged on a side of the adjustment disk (10) close to the inner ring (6); a circumferential array of inclined grooves (13) is provided on the adjustment disk (10); a plurality of centripetal grooves (14) are correspondingly provided on the directional disk (11); the inner support rod (12) is slidably arranged in the inclined grooves (13) and the centripetal grooves (14); the adjustment disk (10) can slide horizontally relative to the inner support rod (12).

4. The stainless steel pleated filter element welding device according to claim 3, characterized in that: The centripetal groove (14) points to the center of the directional disk (11), and an angle is set between the inclined groove (13) and the centripetal groove (14). When the adjustment disk (10) rotates, the inclined groove (13) drives the inner support rod (12) to move radially along the centripetal groove (14) to adjust the support diameter of the inner support mechanism (3).

5. The stainless steel pleated filter element welding device according to claim 3, characterized in that: A central block (15) is provided at the center of the directional disk (11), and a first spring (16) is connected between the central block (15) and the inner support rod (12).

6. The stainless steel pleated filter element welding device according to claim 3, characterized in that: A connecting block (17) is provided at the center of one end of each inner support rod (12) away from the directional disk (11), and the connecting block (17) is connected to the inner support rod (12) via a telescopic rod (18). A second spring (19) is provided around the telescopic rod (18), and two ends of the second spring (19) respectively abut against the inner support rod (12) and the connecting block (17).

7. The stainless steel pleated filter element welding device according to claim 3, characterized in that: A screw rod (2) is provided on one side of the workbench (1) close to the adjustment disk (10), and the center of the adjustment disk (10) is connected to the screw rod (2) via a threaded connection.

8. The stainless steel pleated filter element welding device according to claim 2, characterized in that: A centering shaft (5) is provided on the sliding portion of the workbench (1), and the centering shaft (5) passes through the center of the fixed disk (8). The fixed disk (8) is installed on the workbench (1) through the centering shaft (5) and can rotate around the centering shaft (5).

9. The stainless steel pleated filter element welding device according to claim 6, characterized in that: A centering shaft (5) is provided through the sliding portion of the workbench (1), and an end portion of the centering shaft (5) is provided at the center of the connecting block (17) for supporting the connecting block (17) and each inner support rod (12).

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