Pad position adjusting mechanism and roll welding device

Abstract

The utility model provides a bonding pad position adjusting mechanism and a roll welding device, and belongs to the technical field of welding equipment. The adjusting mechanism comprises a bonding pad mounting seat, an adjusting base and a plurality of connecting assemblies; the bonding pad installation seat is used for installing a bonding pad and provided with an arc-shaped sliding part, the adjusting base is provided with an arc-shaped adjusting groove, the bonding pad installation seat is installed on the adjusting base, the arc-shaped sliding part is located in the arc-shaped adjusting groove, and the axis corresponding to the arc-shaped adjusting groove is overlapped with the axis corresponding to the arc-shaped sliding part. The arc-shaped sliding part can slide in the arc length direction of the arc-shaped adjusting groove, and a welding electrode of a bonding pad installed on the bonding pad installation base is located on the axis corresponding to the arc-shaped adjusting groove. The connecting assembly is connected between the bonding pad mounting base and the adjusting base, and the bonding pad mounting base is fixed to the adjusting base. Through the cooperation of the arc-shaped sliding part and the arc-shaped adjusting groove, the position of the bonding pad is adjusted, the welding angle is adjusted, errors caused by machining precision are reduced, and the welding effect of products is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding equipment, and particularly relates to a pad position adjusting mechanism and a seam welding device. Background Art

[0002] In the related art, a supporting skeleton for providing support and a flexible filter membrane are spirally wound. The rigid spiral filter element is formed by the spiral supporting skeleton and the spiral filter membrane together, so that the spiral filter element has a certain rigidity to meet the requirements of the use environment. The structure of the spiral filter element can refer to the pipe fitting structure in the Chinese invention document with the publication number of CN117862279A. In some products, in order to improve the connection stability between the supporting skeleton and the filter membrane, the supporting skeleton and the filter membrane are welded. Generally, a seam welding device is used to weld the two. Specifically, the spiral filter element formed by the supporting skeleton and the filter membrane is wound around the outside of the welding cylinder together. With the rotation of the welding cylinder, the spiral filter element advances spirally. During the advancing process, the welding cylinder cooperates with the welding pad to weld the supporting skeleton and the filter membrane.

[0003] However, affected by the processing accuracy, there are differences in the optimal welding points when the same model of welding pad and welding cylinder are matched, which affects the welding effect of the product. Summary of the Utility Model

[0004] The purpose of this application is to provide a pad position adjusting mechanism and a seam welding device to solve the above technical problems existing in the prior art.

[0005] This application is realized as follows:

[0006] In the first aspect, an embodiment of this application provides a pad position adjusting mechanism, which is applied to a seam welding device and includes a pad mounting seat, an adjusting base, and a plurality of connecting components; the pad mounting seat is used to mount the welding pad, the pad mounting seat has an arc-shaped sliding part, the adjusting base is provided with an arc-shaped adjusting groove, the pad mounting seat is mounted on the adjusting base, the arc-shaped sliding part is located in the arc-shaped adjusting groove, the axis corresponding to the arc-shaped adjusting groove overlaps with the axis corresponding to the arc-shaped sliding part, the arc-shaped sliding part can slide along the arc length direction of the arc-shaped adjusting groove, and the welding electrode of the welding pad mounted on the pad mounting seat is located on the axis corresponding to the arc-shaped adjusting groove; the connecting components are connected between the pad mounting seat and the adjusting base to fix the pad mounting seat to the adjusting base.

[0007] In the second aspect, an embodiment of this application provides a seam welding device, which includes the pad position adjusting mechanism provided in the first aspect embodiment.

[0008] The beneficial effect of this application is:

[0009] In this application, by setting the arc-shaped sliding part of the pad mounting seat to slidably cooperate with the arc-shaped adjustment groove of the adjustment base, the position of the pad mounting seat is adjusted, thereby adjusting the position of the pad on the pad mounting seat. Moreover, the welding electrode of the pad is set on the axis corresponding to the arc-shaped adjustment groove. During the process of adjusting the pad position, the position of the welding electrode can remain stable, thereby realizing fine adjustment of the welding angle, reducing or compensating for the error caused by processing accuracy, ensuring that the pads and the solder barrels of the same model can be adjusted to the optimal welding angle during cooperation, and thus improving the welding effect of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for describing the embodiments of the present invention or the prior art. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0011] Figure 1 is a schematic diagram of the cooperation between the adjustment mechanism and the solder barrel provided by some embodiments of this application;

[0012] Figure 2 is a schematic diagram of the overall structure of the adjustment mechanism provided by some embodiments of this application Figure 1 ;

[0013] Figure 3 is a schematic diagram of the overall structure of the adjustment mechanism provided by some embodiments of this application Figure 2 ;

[0014] Figure 4 is the detail view of part A of this application regarding Figure 3 ;

[0015] Figure 5 is a schematic diagram of the overall structure of the adjustment mechanism provided by some embodiments of this application Figure 3 ;

[0016] Figure 6 is a schematic diagram of the overall structure of the adjustment mechanism provided by some embodiments of this application Figure 4 ;

[0017] Figure 7 is a schematic diagram of the disassembled structure of the adjustment mechanism provided by some embodiments of this application;

[0018] Figure 8 is a schematic diagram of the structure of the pad mounting seat provided by some embodiments of this application;

[0019] Figure 9 is a schematic diagram of the structure of the adjustment base provided by some embodiments of this application.

[0020] In the figure: 100 - pad mounting base, 110 - arc-shaped sliding part, 111 - protruding structure, 112 - mounting groove, 120 - connecting part, 130 - base, 131 - side plate, 132 - reinforcing plate, 140 - first threaded hole, 200 - adjusting base, 210 - arc-shaped adjusting groove, 220 - seat body, 230 - support seat, 240 - second threaded hole, 300 - connecting component, 310 - connecting plate, 311 - first elongated hole, 312 - second elongated hole, 320 - first connecting bolt, 330 - second connecting bolt, 400 - moving gap, 500 - pad, 610 - welding cylinder, 620 - support frame. Specific implementation manner

[0021] The following description provides many different embodiments or examples for implementing different features of the present utility model. The elements and arrangements described in the following specific examples are only used to concisely express the present utility model, and they are only examples and not intended to limit the present utility model.

[0022] An embodiment of the present application provides a pad position adjusting mechanism. Refer to Figures 1 to 9 As shown, this adjusting mechanism is applied to a seam welding device to adjust the pad 500 of the seam welding device, thereby adjusting the welding angle of the seam welding device to the product and ensuring the welding effect on the product.

[0023] The adjusting mechanism includes a pad mounting base 100, an adjusting base 200, and a plurality of connecting components 300. The pad mounting base 100 is used to mount the pad 500. Refer to Figures 1 to 8 As shown, the pad mounting base 100 has an arc-shaped sliding part 110. Refer to Figure 7 and Figure 9 As shown, the adjusting base 200 is provided with an arc-shaped adjusting groove 210.

[0024] The pad mounting base 100 is directly mounted on the adjusting base 200, and moreover, the arc-shaped sliding part 110 is located in the arc-shaped adjusting groove 210. The axis corresponding to the arc-shaped adjusting groove 210 coincides with the axis corresponding to the arc-shaped sliding part 110. The arc-shaped sliding part 110 can slide in the arc-shaped adjusting groove 210 along the arc length direction of the arc-shaped adjusting groove 210 to adjust the relative position of the pad mounting base 100 and the adjusting base 200. One surface of the arc-shaped sliding part 110 is an arc surface, and one inner wall of the arc-shaped adjusting groove 210 is an arc surface. When the arc-shaped sliding part 110 is located in the arc-shaped adjusting groove 210, the two arc surfaces are coaxially arranged. The arc surface of the arc-shaped sliding part 110 is in contact and cooperation with the arc surface of the arc-shaped adjusting groove 210 and slides along the arc length direction of the arc-shaped adjusting groove 210.

[0025] The pad 500 has welding electrodes which are located on the circumferential sidewall of the pad 500. The welding electrodes serve as terminals for power input and output on the welding equipment and are key components in the electric welding process. During the electric welding process, by generating an arc discharge between the two electrodes, the heat of the arc is used to melt the metal to achieve the purpose of joining the two workpieces.

[0026] Reference Figure 1 As shown in the reference, when the seam welding device is in use, the pad 500 and the welding cylinder 610 cooperate with each other and are clamped on both sides of the product to be welded. The welding electrodes of the pad 500 are generally located at the contact position between the pad 500 and the product. The welding cylinder 610 also has welding electrodes which are located at the contact position between the welding cylinder 610 and the product. The two welding electrodes are respectively located on both sides of the product to be welded. In the embodiment provided in the present application, the product to be welded is a spiral filter element. The spiral filter element is sleeved on the welding cylinder 610 and advances spirally in cooperation with the rotation of the welding cylinder 610. The spiral support skeleton 620 sequentially passes through between the welding cylinder 610 and the pad 500. Figure 1 Only the support skeleton 620 of the spiral filter element is shown in the figure, and the filter membrane is not shown. The welding electrodes are in contact with the support skeleton 620 to weld the support skeleton 620 and the filter membrane.

[0027] The welding electrodes of the pad 500 on the pad mounting seat 100 are located on the axis corresponding to the arc-shaped adjustment groove 210. With such a layout, during the process of the pad mounting seat 100 sliding relative to the adjustment base 200, even if the position of the pad 500 changes, the welding electrodes can remain stable relative to the adjustment base 200, ensuring the stability of the welding position of the product. By sliding the pad mounting seat 100, the welding angle can be finely adjusted.

[0028] During the production of the spiral filter element, to ensure the welding effect on the spiral filter element, the seam welding device has various structures for adjusting the positions of the pad 500 and the welding cylinder 610, and adjusts the welding position of the spiral filter element from multiple dimensions and multiple directions. The adjustment mechanism provided in the embodiment of the present application adjusts the position of the pad 500 while ensuring the stability of the position of the welding electrodes, thereby realizing the adjustment of the welding angle.

[0029] A plurality of connection components 300 are connected between the pad mounting seat 100 and the adjustment base 200 to fix the pad mounting seat 100 to the adjustment base 200. After adjusting the pad mounting seat 100 to a suitable position, it is necessary to use the connection components 300 to fix the positions of the pad mounting seat 100 and the adjustment base 200, so that the pad mounting seat 100 is stable in the adjusted position and prevent the pad mounting seat 100 from accidentally moving, which may affect the welding effect of the product.

[0030] The adjustment mechanism provided by the embodiments of the present application uses the cooperation of the arc-shaped sliding part 110 and the arc-shaped adjustment groove 210 to adjust the position of the pad 500, thereby realizing the adjustment of the welding angle. Moreover, the welding electrode of the pad 500 is arranged on the axis corresponding to the arc-shaped adjustment groove 210. During the process of adjusting the position of the pad 500, the position of the welding electrode can remain stable, thereby realizing the fine adjustment of the welding angle, reducing or compensating for the error caused by the processing accuracy, ensuring that the pads 500 and the welding cylinders 610 of the same model can be adjusted to the optimal welding angle during cooperation, and thus improving the welding effect of the product.

[0031] The arc-shaped sliding part 110 is in sliding fit with the arc-shaped adjustment groove 210, and the corresponding arc surfaces of the two are coaxially arranged. During the process of the arc-shaped sliding part 110 sliding relative to the arc-shaped adjustment groove 210, the arc-shaped sliding part 110 and the arc-shaped adjustment groove 210 are stably attached to each other. When the arc-shaped sliding part 110 is slid to any position in the arc-shaped adjustment groove 210, the relative position between the arc-shaped sliding part 110 and the arc-shaped adjustment groove 210 remains stable, and the arc-shaped sliding part 110 will not have position changes such as tilting relative to the arc-shaped adjustment groove 210.

[0032] In some preferred embodiments of the present application, referring to Figure 1 、 Figure 2 、 Figure 7 and Figure 8 as shown, the pad mounting seat 100 has a connecting part 120 for mounting the pad 500, and the axis of the connecting part 120 coincides with the axis of the pad 500. The pad 500 is generally connected to the pad mounting seat 100 through a rotating shaft. The connecting part 120 generally refers to the rotating shaft, or refers to the position where the pad mounting seat 100 is connected to the rotating shaft, and the axis of the rotating shaft is the axis of the connecting part 120. The axis of the connecting part 120 is parallel to the cross-section corresponding to the arc-shaped sliding part 110. By sliding the arc-shaped sliding part 110, the axis of the pad 500 is inclined relative to the adjustment base 200, which is more conducive to the adjustment of the welding angle. The cross-section of the arc-shaped sliding part 110 refers to the section perpendicular to its axis of the arc-shaped sliding part 110.

[0033] In some specific implementation manners, referring to Figure 7 and Figure 8 as shown, the pad mounting seat 100 includes two arc-shaped sliding parts 110 and a base 130 connected between the two arc-shaped sliding parts 110. Referring to Figure 7 and Figure 9 as shown, the adjustment base 200 has two arc-shaped adjustment grooves 210, and the arc-shaped adjustment grooves 210 are arranged in one-to-one correspondence with the arc-shaped sliding parts 110. There is an activity gap 400 between the mutually approaching surfaces of the base 130 and the adjustment base 200. Referring to Figure 3 and Figure 4As shown. The cooperation between the arc-shaped adjustment groove 210 and the arc-shaped sliding part 110 realizes the support and position adjustment of the pad mounting seat 100. The two arc-shaped sliding parts 110 and the two arc-shaped adjustment grooves 210 improve the connection stability between the pad mounting seat 100 and the adjustment base 200. The movable gap 400 provides a sliding margin for the base 130, preventing the base 130 from touching the adjustment base 200 during the adjustment of the pad mounting seat 100, thus affecting the sliding of the pad mounting seat 100.

[0034] In some embodiments, the connection component 300 can be a bolt. The bolt is provided to be threadedly connected to the adjustment base 200, and the end of the bolt abuts against the pad mounting seat 100. Bolts are provided on both sides of the pad mounting seat 100, and the pad mounting seat 100 is supported by the bolts to prevent the pad mounting seat 100 from moving relative to the adjustment base 200.

[0035] In some embodiments of the present application, referring to Figures 2 to 4 and Figure 7 As shown, the connection component 300 includes a connecting plate 310, a first connecting bolt 320, and a second connecting bolt 330. The connecting plate 310 is provided with a first elongated hole 311 and a second elongated hole 312. The length directions of the first elongated hole 311 and the second elongated hole 312 are both arranged parallel to the cross-section corresponding to the arc-shaped sliding part 110. The first connecting bolt 320 passes through the first elongated hole 311 and is threadedly connected to the base 130, and the head of the first connecting bolt 320 abuts tightly against the connecting plate 310. The second connecting bolt 330 passes through the second elongated hole 312 and is threadedly connected to the adjustment base 200, and the head of the second connecting bolt 330 abuts tightly against the connecting plate 310. Referring to Figure 7 As shown, the base 130 is provided with a first threaded hole 140, and the first connecting bolt 320 is in threaded cooperation with the first threaded hole 140; the adjustment base 200 is provided with a second threaded hole 240, and the second connecting bolt 330 is in threaded cooperation with the second threaded hole 240.

[0036] The connecting plate 310 is simultaneously attached to the surface of the base 130 and the surface of the adjustment base 200. The head of the first connecting bolt 320 presses the connecting plate 310 tightly against the base 130. There is a fixed point between the head of the first connecting bolt 320 and the connecting plate 310, and there is a fixed point between the threaded part of the first connecting bolt 320 and the first threaded hole 140 of the base 130. The first connecting bolt 320 fixes the connecting plate 310 to the base 130. The connection between the connecting plate 310 and the adjustment base 200 is the same. The second connecting bolt 330 fixes the connecting plate 310 to the adjustment base 200. Through the connecting plate 310, the position fixation of the pad mounting seat 100 and the adjustment base 200 is realized.

[0037] The first strip hole 311 and the second strip hole 312 provided on the connecting plate 310 can provide a margin for movement for the connecting plate 310. After the relative position between the pad mounting base 100 and the adjusting base 200 changes, it is necessary to readjust the position of the connecting plate 310 so that the connecting plate 310 is in contact with both the adjusting base 200 and the base 130 simultaneously, thereby fixing the relative position between the adjusting base 200 and the pad mounting base 100.

[0038] In the embodiment of the present application, the length directions of the first strip hole 311 and the second strip hole 312 are parallel to the cross-section corresponding to the arc-shaped sliding portion 110. After the position of the pad mounting base 100 changes, by moving the connecting plate 310 along the length direction of the second strip hole 312, the connecting plate 310 can be made to contact the adjusting base 200 and the base 130 again simultaneously. At the same time, the first threaded hole 140 moves within the mapping range of the first strip hole 311, and the second threaded hole 240 moves within the mapping range of the second strip hole 312. It is still possible to use the first connecting bolt 320 to fix the connecting plate 310 and the pad mounting base 100, and use the second connecting bolt 330 to fix the connecting plate 310 and the adjusting base 200.

[0039] In addition, it should be noted that after the arc-shaped sliding portion 110 slides along the arc-shaped adjusting groove 210, the pad mounting base 100 rotates relative to the adjusting base 200, the contact area between the connecting plate 310 and the pad mounting base 100 will change, and the axis of the first connecting bolt 320 may be inclined relative to the axis of the first strip hole 311. When passing through the first connecting bolt 320, attention needs to be paid to the stability of the tight fit between the first connecting bolt 320 and the connecting plate 310.

[0040] In some preferred embodiments, the connecting plate 310 can be set as an L-shaped plate. Refer to Figure 7 As shown, the first strip hole 311 is provided on one part of the connecting plate 310, and the second strip hole 312 is provided on the other part of the connecting plate 310. The structure of the L-shaped plate makes it more convenient for the connecting plate 310 to contact the adjusting base 200 and the pad mounting base 100 simultaneously. At the same time, the first connecting bolt 320 and the second connecting bolt 330 are not easily affected by each other when connecting with the connecting plate 310.

[0041] Multiple sets of connecting components 300 are provided to increase the connection points between the base 130 and the adjusting base 200, and further improve the position stability of the pad mounting base 100. In some embodiments, the multiple sets of connecting components 300 are divided into two parts, and the two parts of the connecting components 300 are respectively clamped on both sides of the rotation direction of the base 130, and the rotation direction of the base 130 is the sliding direction of the arc-shaped sliding portion 110. The two parts of the connecting components 300 jointly fix the pad mounting base 100 and the adjusting base 200 to stabilize the position of the pad mounting base 100.

[0042] In some embodiments, at least a part of the connecting component 300 is located at the end of the base 130 close to the arc-shaped sliding part 110. The closer the connecting component 300 is to the arc-shaped sliding part 110, the shorter the corresponding lever arm of the connecting component 300, the smaller the resistance received, and the better the fixing effect of the connecting component 300 on the pad mounting seat 100.

[0043] In some embodiments provided by the present application, the pad mounting seat 100 includes a base 130 and an arc-shaped sliding part 110. The arc-shaped sliding part 110 is separately provided from the base 130. Different sizes and radii of the arc-shaped sliding part 110 can be prefabricated in advance according to product requirements, and then the arc-shaped sliding part 110 is directly assembled and fixed to the base 130, improving the manufacturing efficiency of the pad mounting seat 100.

[0044] In some specific embodiments, the base 130 includes two side plates 131 arranged side by side and a plurality of reinforcing plates 132. Referring to Figure 2 as shown, the side plates 131 are fixedly connected between the two arc-shaped sliding parts 110, and the reinforcing plates 132 are fixedly connected between the two side plates 131, improving the connection stability between the two side plates 131. And at least a part of the reinforcing plates 132 is fixedly connected to the arc-shaped sliding part 110. Referring to Figure 6 as shown, further increasing the stability of the overall structure of the pad mounting seat 100. An installation space for installing the pad 500 is formed between the two side plates 131. The pad mounting seat 100 is formed by assembling and splicing a plurality of plates. Generally, the plurality of plates are fixedly connected by bolts. After the plates are prefabricated in advance and then assembled, it is beneficial to improve the production efficiency of the pad mounting seat 100.

[0045] The pad mounting seat 100 not only needs to install the pad 500, but also needs to install the driving mechanism corresponding to the pad 500 and some equipment components required for welding. Therefore, the pad mounting seat 100 needs to have a certain structural strength to avoid structural damage during use, thereby affecting the position stability of the pad 500 and the welding effect of the product.

[0046] To further improve the overall structural strength and structural stability of the pad mounting seat 100, in some embodiments, the arc-shaped sliding part 110 is provided with a protruding structure 111. Referring to Figure 5 and Figure 6 as shown, the protruding structure 111 is located between the two side plates 131 and is fixedly connected to the two side plates 131. The protruding structure 111 further increases the connection area between the side plates 131 and between the side plates 131 and the arc-shaped sliding part 110, thereby enhancing the structural strength of the pad mounting seat 100.

[0047] In some embodiments of the present application, the surface of the arc-shaped sliding part 110 close to the arc-shaped adjustment groove 210 is an arc surface, and the side of the arc-shaped sliding part 110 away from the arc-shaped adjustment groove 210 is provided with a mounting groove 112, and the side plate 131 is installed in the mounting groove 112. The side plate 131 is erected between the two arc-shaped sliding parts 110. Due to the installation groove 112, the side plate 131 is located above the mounting groove 112, and the mounting groove 112 can support the side plate 131, thereby reducing the force of the connecting bolts between the side plate 131 and the arc-shaped sliding part 110, and improving the stability of the overall structure of the welding pad 500 fixing seat. Further preferably, the two ends of the side plate 131 are provided with a clamping groove, and the clamping groove is clamped to the arc-shaped sliding part 110. On the one hand, it is convenient to position and install the side plate 131, and on the other hand, the clamping groove increases the contact area between the side plate 131 and the arc-shaped sliding part 110, and improves the connection stability between the two.

[0048] refer to Figure 7 and Figure 9 As shown, the adjustment base 200 includes two base bodies 220 and a support base 230 connected between the two base bodies 220, the arc-shaped adjustment groove 210 is provided on the base body 220, and the movable gap 400 is located between the base 130 and the support base 230. The base body 220 and the support base 230 can be manufactured separately and then assembled. The base body 220 can be provided with a variety of sizes, and the base body 220 of the corresponding size is installed on the support base 230 according to actual product requirements.

[0049] An embodiment of the present application also provides a roll welding device, including the pad position adjustment mechanism provided by any of the above embodiments.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pad position adjusting mechanism is applied to a roll welding device, characterized in that, It includes a pad mounting base (100), an adjusting base (200), and a plurality of connecting components (300); The pad mounting base (100) is used for mounting a pad (500). The pad mounting base (100) has an arc-shaped sliding portion (110), and the adjusting base (200) is provided with an arc-shaped adjusting groove (210); The pad mounting base (100) is mounted on the adjusting base (200). The arc-shaped sliding portion (110) is located in the arc-shaped adjusting groove (210). The axis corresponding to the arc-shaped adjusting groove (210) overlaps with the axis corresponding to the arc-shaped sliding portion (110). The arc-shaped sliding portion (110) can slide along the arc length direction of the arc-shaped adjusting groove (210), and the welding electrode of the pad (500) mounted on the pad mounting base (100) is located on the axis corresponding to the arc-shaped adjusting groove (210); The connecting component (300) is connected between the pad mounting base (100) and the adjusting base (200) to fix the pad mounting base (100) to the adjusting base (200).

2. The pad position adjusting mechanism according to claim 1, wherein, The pad mounting base (100) has a connecting portion (120) for mounting the pad (500). The axis of the connecting portion (120) overlaps with the axis of the pad (500), and the axis of the connecting portion (120) is parallel to the cross-section corresponding to the arc-shaped sliding portion (110).

3. The pad position adjusting mechanism according to claim 1, characterized in that, The pad mounting base (100) includes two of the arc-shaped sliding portions (110) and a base (130) connected between the two arc-shaped sliding portions (110); The adjusting base (200) has two of the arc-shaped adjusting grooves (210). The arc-shaped adjusting grooves (210) are arranged in one-to-one correspondence with the arc-shaped sliding portions (110). There is an activity gap (400) between the surfaces of the base (130) and the adjusting base (200) that are close to each other.

4. A pad position adjusting mechanism according to claim 3, characterized in that, The connecting component (300) includes a connecting plate (310), a first connecting bolt (320), and a second connecting bolt (330). The connecting plate (310) is provided with a first elongated hole (311) and a second elongated hole (312). The length directions of the first elongated hole (311) and the second elongated hole (312) are both parallel to the cross-section corresponding to the arc-shaped sliding portion (110). The first connecting bolt (320) passes through the first elongated hole (311) and is threadedly connected to the base (130), and the head of the first connecting bolt (320) abuts against the connecting plate (310). The second connecting bolt (330) passes through the second elongated hole (312) and is threadedly connected to the adjusting base (200), and the head of the second connecting bolt (330) abuts against the connecting plate (310).

5. The pad position adjusting mechanism according to claim 4, wherein There are multiple groups of the connecting components (300), and at least part of the connecting components (300) are located at the end of the base (130) close to the arc-shaped sliding portion (110).

6. The pad position adjusting mechanism according to claim 3, wherein, The base (130) includes two side plates (131) arranged side by side and a plurality of reinforcing plates (132). The side plates (131) are fixedly connected between the two arc-shaped sliding portions (110). The reinforcing plates (132) are fixedly connected between the two side plates (131), and at least a part of the reinforcing plates (132) is fixedly connected to the arc-shaped sliding portions (110). An installation space for installing the pad (500) is formed between the two side plates (131).

7. The pad position adjusting mechanism according to claim 6, characterized in that, The arc-shaped sliding portion (110) is provided with a convex structure (111). The convex structure (111) is located between the two side plates (131), and the convex structure (111) is fixedly connected to the two side plates (131).

8. A pad position adjusting mechanism according to claim 6, characterized in that, An installation groove (112) is provided on a side of the arc-shaped sliding portion (110) facing away from the arc-shaped adjustment groove (210). The side plate (131) is installed in the installation groove (112).

9. The pad position adjusting mechanism according to claim 3, characterized in that, The adjustment base (200) includes two seat bodies (220) and a support seat (230) connected between the two seat bodies (220). The arc-shaped adjustment groove (210) is provided in the seat body (220). The movement gap (400) is located between the base (130) and the support seat (230).

10. A seam welding device, characterized in that, It includes the pad position adjustment mechanism according to any one of claims 1-9.

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