Supporting structure, roll welding device and pipe making machine

Abstract

The utility model provides a supporting structure, a roll welding device and a pipe making machine, the supporting structure comprises a first clamping structure and a second clamping structure, the first clamping structure and the second clamping structure are oppositely arranged, a clamping gap is formed between the first clamping structure and the second clamping structure, and the clamping gap is used for arranging a metal strip; the clamping base comprises a fixed part and a movable clamping part, one end of the first clamping structure is fixed to the fixed part, the other end of the first clamping structure is connected to the movable clamping part, and the position of the other end of the first clamping structure is adjusted through the movable clamping part. According to the roll welding device, the first clamping structure and the second clamping structure are arranged, so that the metal strip is fixed to the welding position through the first clamping structure and the second clamping structure, and the welding effect of the roll welding device on the metal strip is guaranteed on the basis that the position stability of the metal strip during welding is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding, and specifically relates to a supporting structure, a rolling welding device and a pipe making machine. Background Art

[0002] In order to increase the capacity of the battery, the length of the battery is getting larger and larger. When welding the battery shell, the plate is generally bent and then welded.

[0003] Since the battery shell needs to be squeezed by the welding head during welding, and the weld of the battery shell is relatively long during welding, the shell is easily offset during the welding process, thereby affecting the welding effect. Utility Model Content

[0004] One object of the utility model is to provide a new technical solution of a supporting structure, a rolling welding device and a pipe making machine.

[0005] According to a first aspect of the utility model, a support structure is provided for supporting a metal strip, comprising:

[0006] A first clamping structure and a second clamping structure, wherein the first clamping structure and the second clamping structure are arranged opposite to each other, and a clamping gap is formed between the first clamping structure and the second clamping structure, and the clamping gap is used to arrange a metal strip;

[0007] The clamping base includes a fixed portion and a movable clamping portion, one end of the first clamping structure is fixed to the fixed portion, and the other end of the first clamping structure is connected to the movable clamping portion, so that the first clamping structure and the second clamping structure fix the metal strip in the welding position.

[0008] Optionally, the clamping base includes a bottom plate, the fixing portion is connected to the bottom plate, and the movable clamping portion is movably disposed on the bottom plate.

[0009] Optionally, a second flow channel is formed inside the first clamping structure, and the second flow channel is used for circulating a cooling medium to cool the metal strip.

[0010] Optionally, the first clamping structure comprises a bearing plate and a cooling plate, wherein the cooling plate is arranged on a side of the bearing plate close to the welding area of ​​the metal strip, and the cooling plate and the bearing plate are used to abut against the surface of the metal strip.

[0011] Optionally, a second flow channel is formed inside the cooling plate, and the second flow channel is used to flow a cooling medium so as to cool the metal strip.

[0012] Optionally, the length of the carrying plate ranges from 200 mm to 2000 mm.

[0013] Optionally, the second clamping structure comprises an adjusting member and a limiting member, the limiting member is connected to the clamping base through the adjusting member, and the limiting member is opposite to the first clamping structure to form the clamping gap between the limiting member and the first clamping structure;

[0014] The adjusting member is used to adjust the gap size of the clamping gap so that the limiting member and the first clamping structure clamp the metal bar or release the metal bar.

[0015] Optionally, the first clamping structure further comprises a positioning block, and the positioning block is provided with a positioning groove;

[0016] When the first clamping structure and the second clamping structure clamp the metal strip, the positioning groove is used to position the protrusions at both ends of the overlapping area of ​​the metal strip.

[0017] Optionally, the first clamping structure further includes a guide block, and the guide block is arranged at one end of the cooling plate in a feeding direction toward the metal strip.

[0018] According to a second aspect of the utility model, there is provided a roll welding device for welding metal strips, comprising a welding structure and the support structure described in the first aspect;

[0019] The welding structure comprises a rolling welding wheel, and the rolling welding wheel is used to weld the overlapping areas of the metal strips.

[0020] Optionally, the roll welding device comprises a bracket and a pre-pressing structure, the pre-pressing structure comprises a pre-pressing component and an elastic member, and the pre-pressing component is connected to the bracket through the elastic member;

[0021] The pre-pressing assembly is used to pre-press the overlapping area of ​​the metal strip.

[0022] Optionally, the welding structure comprises a rotating shaft, and the rolling welding wheel is sleeved on the rotating shaft;

[0023] A first flow channel is formed inside the rotating shaft, and the first flow channel is used for circulating a cooling medium to cool the roll welding wheel.

[0024] Optionally, it also includes a roll welding host, a first conductive block and a second conductive block, the first conductive block is connected between the roll welding host and the welding structure and is used to energize the welding structure, the first clamping structure is a metal clamping structure, and the second conductive block is connected between the metal clamping structure and the roll welding host to form a current loop from the roll welding host, the first conductive block, the welding structure, the metal strip, the metal clamping structure, the second conductive block to the roll welding host.

[0025] According to a third aspect of the present utility model, a pipe making machine is provided, the pipe making machine comprising the rolling welding device described in the second aspect.

[0026] A technical effect of the utility model is:

[0027] An embodiment of the present application provides a supporting structure, which includes a first clamping structure and a second clamping structure, which are arranged opposite to each other, and a clamping gap is formed between the first clamping structure and the second clamping structure, and the clamping gap is used to set a metal strip; a clamping base includes a fixed portion and a movable clamping portion, one end of the first clamping structure is fixed to the fixed portion, and the other end of the first clamping structure is connected to the movable clamping portion, and the position of the other end of the first clamping structure is adjusted by the movable clamping portion, so that the first clamping structure and the second clamping structure fix the metal strip in the welding position, and on the basis of ensuring the position stability of the metal strip during welding, the welding effect of the rolling welding device on the metal strip is guaranteed.

[0028] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0030] Figure 1 A schematic diagram of a metal strip welded by a roll welding device provided in one embodiment of the utility model;

[0031] Figure 2 An end view of a metal strip welded by a roll welding device provided in one embodiment of the utility model;

[0032] Figure 3 A schematic diagram of a welding method of a roll welding device provided in one embodiment of the utility model Figure 1 ;

[0033] Figure 4 A schematic diagram of a welding method of a roll welding device provided in one embodiment of the utility model Figure 2 ;

[0034] Figure 5 A schematic diagram of a welding method of a roll welding device provided in one embodiment of the utility model Figure 3 ;

[0035] Figure 6 A side view of a seam welding device provided in one embodiment of the utility model;

[0036] Figure 7 for Figure 6 Cross-section of the mid-CC plane;

[0037] Figure 8 for Figure 6 Cross-section of the middle DD plane;

[0038] Fig. 9 A schematic diagram of a side pressure structure of a roll welding device according to an embodiment of the present utility model applying side pressure to a metal strip;

[0039] Fig.10 A schematic diagram of a roll welding device provided by one embodiment of the utility model before the metal strip is loaded;

[0040] Fig.11 A schematic diagram of a roll welding device provided by one embodiment of the utility model after the metal strip is loaded;

[0041] Fig.12 A schematic diagram of a first clamping structure of a seam welding device provided in one embodiment of the utility model;

[0042] Fig.13 An exploded view of a first clamping structure of a seam welding device provided by one embodiment of the utility model;

[0043] Fig.14 A cross-sectional view of a cooling plate of a seam welding device provided by one embodiment of the utility model;

[0044] Fig.15 A schematic diagram of the cooperation between a positioning block and a metal strip of a roll welding device provided by one embodiment of the utility model;

[0045] Fig.16 A schematic diagram of the cooperation between a positioning block of a roll welding device and a protrusion on a metal strip provided by one embodiment of the utility model;

[0046] Fig.17 A schematic diagram of a movable clamping portion of a seam welding device provided in one embodiment of the utility model.

[0047] Among them: 1. First clamping structure; 11. Loading plate; 111. Detection sensor; 12. Cooling plate; 121. Second flow channel; 13. Positioning block; 131. Positioning groove; 14. Guide block; 141. Guide surface; 15. Plug; 2. Second clamping structure; 21. Adjustment member; 22. Limiting member; 3. Welding structure; 31. Rolling welding wheel; 32. Rotating shaft; 321. First flow channel; 33. Support; 34. Oil-free bushing; 35. Bushing; 36. Locking member; 4. Bracket ;5. Pre-pressing structure;51. Pre-pressing assembly;511. Movable block;512. Pre-pressing shaft;513. Pre-pressing wheel;52. Elastic member;6. Clamping base;61. Bottom plate;62. Fixing part;63. Movable clamping part;7. First side-pressing structure;71. First base;72. First side wheel assembly;721. First wheel seat;722. First side wheel;73. First movable shaft;74. First elastic member;8. Second side-pressing structure;9. First conductive block;10. Second conductive block;

[0048] 100. Metal strip; 101. Overlapping area; 102. Welding seam; 103. First side edge; 104. Second side edge; 105. Bottom plate; 106. First overlapping edge; 107. Second overlapping edge; 108. Protrusion. DETAILED DESCRIPTION

[0049] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0050] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0051] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0052] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0053] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0055] The embodiment of the present application provides a support structure for supporting a metal bar. By clamping the metal bar through the first clamping structure 1 and the second clamping structure 2, it is convenient for the welding structure 3 to weld the metal bar. That is, when the weld is long, the clamping and welding stability of the metal bar can still be guaranteed during the welding process, thereby ensuring the welding effect.

[0056] In one embodiment, see Figure 1 and Figure 2 The sheet material of the formed metal strip 100 can be bent to form a square shell, and the square shell specifically includes a first side 103, a second side 104, a bottom plate 105, a first overlapping edge 106 and a second overlapping edge 107. The first overlapping edge 106 and the second overlapping edge 107 are overlapped together to form an overlapping area 101. The welding structure 3 welds the overlapping area 101 of the metal strip to form a weld 102 on the overlapping area 101, and the weld 102 extends along the length direction of the metal strip.

[0057] The material of the metal strip 100 may be stainless steel, and the wall thickness of the metal strip 100 may be less than or 0.15 mm. Specifically, the wall thickness of the metal strip 100 is 0.03 mm, 0.05 mm, 0.075 mm, 0.1 mm, 0.12 mm or 0.15 mm. The metal strip 100 may be a long metal strip, for example, the length range of the metal strip 100 is 200 mm-2000 mm.

[0058] Reference Figure 3 and Fig.10 , an embodiment of the present application provides a support structure for supporting a metal strip, the support structure comprising:

[0059] A first clamping structure 1 and a second clamping structure 2, the first clamping structure 1 and the second clamping structure 2 are arranged opposite to each other, and a clamping gap is formed between the first clamping structure 1 and the second clamping structure 2, and the clamping gap is used to arrange the metal strip;

[0060] The clamping base 6 includes a fixed portion 62 and a movable clamping portion 63. One end of the first clamping structure 1 is fixed to the fixed portion 62, and the other end of the first clamping structure 1 is connected to the movable clamping portion 63, so that the first clamping structure 1 and the second clamping structure 2 fix the metal strip in the welding position.

[0061] In this embodiment, when welding the metal strip, the first clamping structure 1 and the second clamping structure can be respectively clamped on the outside of the opposite sides of the metal strip to ensure the position stability of the metal strip during welding and avoid the deviation of the metal strip 100 during the welding process.

[0062] In one embodiment, when welding the metal strip 100, for example, the length of the metal strip 100 can reach the range of 200 mm-2000 mm, the two clamping structures formed by the first clamping structure 1 and the second clamping structure 2 can extend along the length direction of the metal strip 100 and clamp the large surfaces on both sides of the metal strip 100. The large surface of the metal strip 100 is the surface surrounded by the long side and the high side of the metal strip 100.

[0063] In this embodiment, the metal strip 100 has a length dimension, a height dimension and a width dimension. The length dimension of the metal strip 100 is greater than the height dimension of the metal strip 100, and the height dimension of the metal strip 100 is greater than the width dimension of the metal strip 100. The edges of the metal strip 100 in the length direction form long sides, the edges of the metal strip 100 in the height direction form long high sides, and the edges of the metal strip 100 in the width direction form wide sides.

[0064] The roll welding device provided in the embodiment of the present application includes a first clamping structure 1 and a second clamping structure 2, the first clamping structure 1 and the second clamping structure 2 are arranged opposite to each other, and a clamping gap is formed between the first clamping structure 1 and the second clamping structure 2, and the clamping gap is used to set the metal strip; the clamping base 6 includes a fixed part 62 and a movable clamping part 63, one end of the first clamping structure 1 is fixed to the fixed part 62, and the other end of the first clamping structure 1 is connected to the movable clamping part 63, and the position of the other end of the first clamping structure 1 is adjusted by the movable clamping part 63, so that the first clamping structure 1 and the second clamping structure 2 fix the metal strip in the welding position, and on the basis of ensuring the position stability of the metal strip during welding, the welding effect of the roll welding device on the metal strip is guaranteed.

[0065] In one embodiment, see Fig.10 The clamping base 6 includes a bottom plate 61 , a fixing portion 62 connected to the bottom plate 61 , and a movable clamping portion 63 movably disposed on the bottom plate 61 .

[0066] In this embodiment, one end of the first clamping structure 1 is fixed to the fixing portion 62 so that the other end of the first clamping structure 1 forms a cantilever end; when the rolling welding device welds the metal bar, the metal bar 100 is loaded from the cantilever end of the first clamping structure 1 to between the first clamping structure 1 and the second clamping structure 2. In order to prevent the first clamping structure 1 from shaking when clamping the metal bar 100, the other end of the first clamping structure 1 can be clamped by the movable clamping portion 63 to ensure the stability of the first clamping structure 1 during the welding process, and to prevent the cooling plate 12 from shaking, thereby ensuring the positioning accuracy of the first clamping structure 1 and the second clamping structure 2 on the metal bar 100.

[0067] In one embodiment, see Fig.13 A second flow channel 121 is formed inside the first clamping structure 1, and the second flow channel 121 is used to flow cooling medium to cool the metal strip.

[0068] In this embodiment, a second flow channel 121 is provided inside the first clamping structure 1, and the second flow channel 121 allows a cooling medium to flow through. After the cooling medium flows through the second flow channel 121, the temperature of the first clamping structure 1 is lowered, so that the first clamping structure 1 can absorb the heat during welding of the metal strip 100, thereby preventing the metal strip 100 from being deformed by heat during welding.

[0069] In one embodiment, see Figures 10 to 13 The first clamping structure 1 includes a carrier plate 11 and a cooling plate 12. The cooling plate 12 is arranged on one side of the carrier plate 11 close to the welding area of ​​the metal strip 100. The cooling plate 12 and the carrier plate 11 are used to abut against the surface of the metal strip.

[0070] In this embodiment, the first clamping structure 1 includes a separately designed supporting plate 11 and a cooling plate 12, so that the long strip-shaped supporting plate 11 and the cooling plate 12 are respectively set, and then the supporting plate 11 and the cooling plate 12 are assembled to ensure the processing accuracy of the first clamping structure 1; and the supporting plate 11 can be used to support and fix the cooling plate 12 to ensure the stability of the setting of the cooling plate 12.

[0071] In one embodiment, see Fig.13 A second flow channel 121 is formed inside the cooling plate 12, and the second flow channel 121 is used to flow the cooling medium so as to cool the metal strip.

[0072] A second flow channel 121 is provided inside the cooling plate 12, and the second flow channel 121 allows the cooling medium to flow through. After the cooling medium flows in the second flow channel 121, the temperature of the cooling plate 12 is reduced, so that the cooling plate 12 can absorb the heat during the welding of the metal strip 100 and prevent the metal strip 100 from being deformed by heat during welding.

[0073] In one embodiment, see Fig.15 The cooling plate 12 may have a process hole when forming the second flow channel 121 , and the process hole may be sealed by a plug 15 to prevent leakage of the cooling medium in the second flow channel 121 .

[0074] In addition, the support plate 11 and the cooling plate 12 can be made of metal, so that the first clamping structure 1 has good electrical conductivity and meets the current conduction requirements between the first clamping structure 1 and the metal strip 100 during the roll welding process.

[0075] In one embodiment, one end of the carrier plate 11 is fixed to the fixing portion 62 so that the other end of the carrier plate 11 forms a cantilever end; when the rolling welding device welds the metal bar, the metal bar 100 is loaded from the cantilever end of the carrier plate 11 to between the first clamping structure 1 and the second clamping structure 2. In order to prevent the carrier plate 11 from shaking when clamping the metal bar 100, the other end of the carrier plate 11 can be clamped by the movable clamping portion 63 to ensure the stability of the carrier plate 11 during the welding process, and to prevent the cooling plate 12 from shaking, thereby ensuring the positioning accuracy of the first clamping structure 1 and the second clamping structure 2 for the metal bar 100.

[0076] In one embodiment, see Fig.17 The top of the movable clamping portion 63 has a clamping structure that can move up and down, and the clamping structure includes a fixed clamping structure and a movable clamping structure. The clamping structure can ensure that it is relative to the other end of the supporting plate 11 when moving up and down, and the movement of the movable clamping structure relative to the fixed clamping structure can clamp and fix the other end of the supporting plate 11, thereby ensuring the setting stability of the supporting plate 11.

[0077] In one embodiment, the length of the carrying plate 11 ranges from 200 mm to 2000 mm.

[0078] In this embodiment, the length direction of the carrying plate 11 can be Fig.10 The loading direction is consistent with the loading direction, and the length direction of the metal bar during loading is also consistent with the loading direction. The length dimension of the carrying plate 11 is the dimension of the carrying plate 11 in its length direction. In order to facilitate the clamping of the metal bar by the carrying plate 11, the length dimension of the carrying plate 11 can be set to be greater than or equal to the length dimension of the metal bar 100. For example, the length dimension range of the carrying plate 11 is set to 200-2000mm to ensure that the carrying plate 11 can clamp the metal bar 100 with a length range of 200mm-2000mm.

[0079] In one embodiment, when the first clamping structure 1 and the second clamping structure 2 clamp the metal strip, the length direction of the carrying plate 11 is consistent with the length direction of the metal strip.

[0080] In this embodiment, the length of the cooling plate 12 may be close to or equal to the length of the metal strip 100 , so as to ensure the cooling effect of the cooling plate 12 on the metal strip 100 .

[0081] In one embodiment, see Fig.10 and Fig.11 The second clamping structure 2 includes an adjusting member 21 and a limiting member 22, the limiting member 22 is connected to the clamping base 6 through the adjusting member 21, and the limiting member 22 is opposite to the first clamping structure 1 to form a clamping gap between the limiting member 22 and the first clamping structure 1;

[0082] The adjusting member 21 is used to adjust the gap size of the clamping gap so that the limiting member 22 and the first clamping structure 1 clamp the metal strip or release the metal strip.

[0083] In this embodiment, the stopper 22 cooperates with the first clamping structure 1, and the metal strip 100 can be clamped between the stopper 22 and the first clamping structure 1, thereby ensuring the stability of the metal strip 100 during welding. The adjustment member 21 can adjust the stopper 22 to be close to the first clamping structure 1 or away from the first clamping structure 1, so as to adjust the gap size of the clamping gap, so that the stopper 22 can clamp the metal strip after approaching the first clamping structure 1, or release the metal strip after being away from the first clamping structure 1, thereby improving the convenience of disassembly and assembly of the metal strip during welding.

[0084] In one embodiment, a screw is provided in the adjusting member 21, and the screw is connected to the limiting member 22 through a connecting rod. By rotating the screw in the adjusting member 21, the connecting rod and the limiting member 22 can be moved closer to the first clamping structure 1 or away from the first clamping structure 1 together, thereby controlling the clamping force of the limiting member 22 and the first clamping structure 1 on the metal bar, thereby clamping and positioning the metal bar.

[0085] In one embodiment, see Fig.15 and Fig.16 , the first clamping structure 1 further includes a positioning block 13, and a positioning groove 131 is provided on the positioning block 13;

[0086] When the first clamping structure 1 and the second clamping structure 2 clamp the metal strip, the positioning grooves 131 are used to position the protrusions 108 at both ends of the overlapping area of ​​the metal strip.

[0087] In this embodiment, the positioning block 13 can be connected to the supporting plate 11 or the cooling plate 12. When the metal strip is clamped between the first clamping structure 1 and the second clamping structure 2, the protrusions 108 at both ends of the overlapping area of ​​the metal strip can be embedded in the positioning groove 131 of the positioning block 13, so as to support and position the metal strip through the positioning block 13, so as to ensure the consistency of the position of the metal strip when welding different metal strips.

[0088] In one embodiment, see Fig.12 and Fig.13 The first clamping structure 1 further includes a guide block 14, which is disposed at one end of the cooling plate 12 facing the feeding direction of the metal strip.

[0089] See also Fig.12 and Fig.13 The first clamping structure 1 further includes a guide block 14, a step region is formed between the end of the cooling plate 12 and the carrier plate 11, and the guide block 14 is disposed in the step region;

[0090] The guide block 14 has a guide surface 141 , and the guide surface 141 faces the feeding direction of the seam welding device.

[0091] In this embodiment, the metal strip can be Fig.12 The left side of the middle load plate 11 and the cooling plate 12 is loaded, and Fig.12 The right side of the middle carrier plate 11 and the cooling plate 12 are blanked so that the left side of the carrier plate 11 and the cooling plate 12 forms the front end of the first clamping structure 1 and the right side of the carrier plate 11 and the cooling plate 12 forms the rear end of the first clamping structure 1 .

[0092] The guide block 14 is installed at the front end of the first clamping structure 1, and the conical structure of the guide block 14 forms a guide surface 141 facing the feeding direction of the seam welding device, so that the metal strip can pass between the first clamping structure 1 and the second clamping structure 2 when feeding.

[0093] Reference Figure 3 and Fig.10 , the embodiment of the present application provides a roll welding device for welding metal strips, the roll welding device includes a welding structure 3 and the support structure;

[0094] The welding structure 3 includes a rolling welding wheel 31 , and the rolling welding wheel 31 is used to weld the overlapping area 101 of the metal strip 100 .

[0095] In this embodiment, the rolling welding wheel 31 can perform rolling welding on the overlapping area 101 of the metal strip to form a weld 102 in the overlapping area 101; specifically, medium-frequency inverter resistance rolling welding can be used on the two overlapping edges, and the rolling welding wheel 31 in the welding structure 3 presses down the overlapping area 101 to apply pressure to the overlapping area 101 and eliminate the gap between the two overlapping edges.

[0096] When the roll welding device welds the metal strip, the welding structure 3 and the metal strip form a current conduction path, and there is a roll welding current loop in which the metal strip flows back to the welding structure 3, thereby realizing the welding of the metal strip and ensuring the welding effect of the roll welding device on the metal strip.

[0097] In the roll welding device provided in the embodiment of the present application, the roll welding wheel 31 is used to weld the overlapping area 101 of the metal strip 100, which ensures the welding effect of the roll welding device on the metal strip while ensuring the position stability of the metal strip during welding.

[0098] In one embodiment, see Figure 3 and Figure 8 The roll welding device further includes a bracket 4 and a pre-pressing structure 5, wherein the pre-pressing structure 5 includes a pre-pressing component 51 and an elastic member 52, and the pre-pressing component 51 is connected to the bracket 4 via the elastic member 52;

[0099] The pre-pressing assembly 51 is used to pre-press the overlapping area of ​​the metal strip.

[0100] In this embodiment, the bracket 4 is fixedly arranged to provide a reference for the movement of the pre-stressing component 51 relative to the bracket 4 through the elastic member 52; when the metal bar 100 is clamped in the clamping gap, the pre-stressing component 51 can realize the pre-stressing treatment of the metal bar 100 to accurately position the metal bar 100, so as to facilitate the rolling welding wheel 31 to effectively weld the overlapping area 101 of the metal bar 100.

[0101] In one embodiment, the support 33 of the welding structure 3 is also connected to the bracket 4 to ensure the stability of the support 33 .

[0102] In one embodiment, see Figure 8 The pre-pressing assembly 51 includes a movable block 511, a pre-pressing shaft 512 and a pre-pressing wheel 513. The pre-pressing shaft 512 is connected to the elastic member 52 through the movable block 511. The pre-pressing wheel 513 is rotatably sleeved on the pre-pressing shaft 512 and is used to pre-press the overlapping area of ​​the metal strip.

[0103] In this embodiment, since the pre-stressing wheel 513 is connected to the elastic member 52, the elastic deformation of the elastic member 52 such as a spring is used as a buffer to form a dynamic floating contact between the pre-stressing wheel 513 and the metal strip 100, so that the movable block 511, the pre-stressing shaft 512 and the pre-stressing wheel 513 can move up and down together to complete the pressing contact with the metal strip 100; at the same time, the pre-stressing wheel 513 can rotate around the pre-stressing shaft 512, so that when the pre-stressing structure 5 moves with the welding structure 3, the pre-stressing wheel 513 can maintain the squeezing of the metal strip while realizing the movement of the pre-stressing wheel 513 relative to the metal strip.

[0104] In one embodiment, see Figure 5 and Figure 6 The welding structure 3 includes a rotating shaft 32, and the rolling welding wheel 31 is sleeved on the rotating shaft 32;

[0105] See also Figure 7 A first flow channel 321 is formed inside the rotating shaft 32 , and the first flow channel 321 is used for circulating a cooling medium to cool the roll welding wheel 31 .

[0106] In this embodiment, the first flow channel 321 inside the rotating shaft 32 can be fed with a cooling medium, and heat is exchanged with the roll welding wheel 31 through the circulation of the cooling medium. For example, the cooling medium can be Figure 7 The liquid flows into the right side of the first flow channel 321 , exchanges heat with the seam welding wheel 31 in the first flow channel 321 , and then flows out from the left side of the first flow channel 321 , thereby cooling the seam welding wheel 31 .

[0107] In one embodiment, the material of the roll welding wheel 31 may be beryllium bronze or chromium zirconium copper material to form a beryllium bronze roll welding wheel or a chromium zirconium copper roll welding wheel, so that the roll welding wheel 31 has good electrical conductivity and heat dissipation performance.

[0108] When the roll welding device welds the metal strip through the roll welding wheel 31, the roll welding wheel 31 generates heat, and when the heat is transferred to the metal strip, it will cause thermal deformation of the welding position of the metal strip. The roll welding device provided in the embodiment of the present application forms a first flow channel 321 inside the rotating shaft 32, and utilizes the flow of the cooling medium in the first flow channel 321 to exchange heat with the roll welding wheel 31, so as to timely absorb the heat generated by the roll welding wheel 31, thereby reducing the thermal deformation of the welding position of the metal strip, avoiding the uneven weld of the metal strip and the poor welding caused by the deformation of the metal strip 100.

[0109] Moreover, when the roll welding device welds the metal strip 100, since the weld seam of the metal strip is relatively long, the roll welding wheel 31 needs to have a relatively long welding stroke in the overlapping area on the metal strip; and the cooling medium in the first flow channel 321 can maintain precise cooling of the roll welding wheel 31 and the weld seam 102 on the overlapping area 101 during the welding process, thereby ensuring the welding effect of the roll welding device on the metal strip.

[0110] In one embodiment, see Figure 7 The welding structure 3 includes a support 33, an oil-free bushing 34, two shaft sleeves 35 and a locking piece 36. A through hole is provided on the support 33, and the oil-free bushing 34 is provided in the through hole. The two shaft sleeves 35 are sleeved on the rotating shaft 32, and the rolling welding wheel 31 is clamped on both sides of the rolling welding wheel 31 through the locking piece 36. The shaft sleeve 35 and the oil-free bushing 34 are rotatably matched, so that the rolling welding wheel 31, the rotating shaft 32 and the shaft sleeve 35 can rotate around the oil-free bushing 34 to realize the rolling welding of the rolling welding wheel 31.

[0111] In one embodiment, see Figure 3 and Fig. 9 The roll welding device further includes a first side pressing structure 7 and a second side pressing structure 8, which are connected to the bracket 4 and are used to abut against two sides of the metal strip respectively.

[0112] In this embodiment, the two sides of the metal strip are the two sides adjacent to one side of the overlapping area of ​​the metal strip, for example, the overlapping area of ​​the metal strip is located on the top side of the metal strip, and the two sides of the metal strip include a first side edge 103 and a second side edge 104 of the metal strip, the first side edge 103 is adjacently connected to one side of the top side of the metal strip, and the second side edge 104 is adjacently connected to the other side of the top side of the metal strip, the first side pressure structure 7 is abutted against the first side edge 103, and the second side pressure structure 8 is abutted against the second side edge 104, so that the first side edge 103 and the second side edge 104 are clamped by the mutual cooperation of the first side pressure structure 7 and the second side pressure structure 8, thereby ensuring the stability of the metal strip 100 during welding.

[0113] In one embodiment, the first side pressure structure 7 and the second side pressure structure 8 are symmetrically arranged, so that the first side pressure structure 7 and the second side pressure structure 8 are respectively abutted against the opposite sides of the metal strip, so as to facilitate the first side pressure structure 7 and the second side pressure structure 8 to move together with the welding structure 3 on the basis of ensuring the stability of the setting of the metal strip.

[0114] In one embodiment, see Fig. 9 The first side pressure structure 7 includes a first base body 71 and a first side wheel assembly 72, and the first side wheel assembly 72 is movably connected to the first base body 71 through a first movable shaft 73;

[0115] The first side wheel assembly 72 is used to abut against one side surface of the metal strip.

[0116] In this embodiment, the first base 71 can be fixedly arranged to provide a reference for the movement of the first side wheel assembly 72 relative to the first base 71; and the first side wheel assembly 72 is movably connected to the first base 71 via the first movable shaft 73, which can facilitate the first side wheel assembly 72 to always maintain contact with one side surface of the metal strip when it is moving, thereby preventing the metal strip from shifting during the welding process.

[0117] In one embodiment, see Fig. 9 The first side pressure structure 7 also includes a first elastic member 74 , and the first elastic member 74 is sandwiched between the first base 71 and the first side wheel assembly 72 .

[0118] In this embodiment, the first side wheel assembly 72 abuts against the surface of the metal strip by means of floating lateral pressure, and when the first side wheel assembly 72 moves relative to the first base 71, the first side wheel assembly 72 compresses the first elastic member 74. The first elastic member 74 in the compressed state can buffer the first side wheel assembly 72. For example, a plurality of first elastic members 74 can be arranged between the first base 71 and the first side wheel assembly 72 to avoid positional displacement of the first side wheel assembly 72.

[0119] In one embodiment, see Fig. 9 The first side wheel assembly 72 includes a first wheel seat 721 and a first side wheel 722. The first wheel seat 721 is movably connected to the first base 71 through a first movable shaft 73. The first side wheel 722 is rotatably connected to the first wheel seat 721 and is used to abut against one side surface of the metal strip.

[0120] In this embodiment, a plurality of first side wheels 722 may be integrated on the first wheel seat 721, and the plurality of first side wheels 722 may rotate on the first wheel seat 721, so that the first side pressure structure 7 moves along with the welding structure 3. Moreover, the movement of the plurality of first side wheels 722 relative to the first base 71 may realize floating side pressure on the metal strip 100, so as to offset the deformation error of the metal strip 100.

[0121] In one embodiment, see Figure 3 The roll welding device also includes a roll welding host, a first conductive block 9 and a second conductive block 10. The first conductive block 9 is connected between the roll welding host and the welding structure 3 and is used to energize the welding structure 3. The first clamping structure 1 is a metal clamping structure. The second conductive block 10 is connected between the metal clamping structure and the roll welding host to form a current loop from the roll welding host, the first conductive block 9, the welding structure 3, the metal strip, the metal clamping structure, the second conductive block 10 to the roll welding host.

[0122] In this embodiment, in the current loop when the roll welding device welds the metal strip, the current is generated by the roll welding main machine provided with the first conductive block 9. The current generated by the roll welding main machine is transmitted to the welding structure 3 via the first conductive block 9, and then transmitted to the metal strip 100 via the welding structure 3. The metal strip 100 is welded under the dual effects of the clamping pressure and the current loop, so as to form a weld 102 on the metal strip, thereby ensuring the welding efficiency of the metal strip.

[0123] In this embodiment, the first clamping structure 1 can be a conductive structure, so that the first clamping structure 1 can act as a positioning structure to position the metal strip, thereby ensuring the positioning of the metal strip and the stability of the welding size, while also having good conductive properties, which can meet the current conduction required by the rolling welding device during rolling welding.

[0124] In one embodiment, the cooling plate 12 can be made of chromium-zirconium-copper material to form a chromium-zirconium-copper cooling plate, so that the cooling plate 12 has good electrical conductivity and wear resistance; and the long strip-shaped supporting plate 11 and the second conductive block 10 are made of H65 (copper-zinc alloy) material to form a copper-zinc alloy supporting plate and a copper-zinc alloy second conductive block, so that the supporting plate 11 and the second conductive block 10 have good electrical conductivity and machining performance.

[0125] When the roll welding device welds the metal strip, the current in the roll welding device flows as follows: welding structure 3, metal strip 100, cooling plate 12, carrier plate 11 and second conductive block 10, and then returns to the roll welding host from the second conductive block 10 to complete the current path cycle.

[0126] In one embodiment, see Fig.10 and Fig.11 The roll welding device also includes a detection sensor 111, which is arranged on the supporting plate 11 to detect whether the metal strip 100 is clamped on the first clamping structure 1. For example, the detection sensor 111 can be a distance sensor or a photoelectric sensor to detect whether a metal strip is arranged in the clamping gap.

[0127] In this embodiment, when the detection sensor 111 detects that no metal bar is set in the clamping gap, the welding operation will not be started to protect the rolling welding device and the operator; when the detection sensor 111 detects that a metal bar is set in the clamping gap, the detection signal can be used as a condition for the rolling welding device to start welding.

[0128] An embodiment of the present application provides a pipe making machine, which includes the above-mentioned rolling welding device.

[0129] In this embodiment, a feeding assembly and a deburring assembly are provided in the pipe making system, so as to facilitate the feeding of the metal strip to the welding position for welding, while ensuring the flatness and smoothness of the surface of the metal strip.

[0130] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A support structure for supporting a metal strip, characterized in that: include: A first clamping structure (1) and a second clamping structure (2), wherein the first clamping structure (1) and the second clamping structure (2) are arranged opposite to each other, and a clamping gap is formed between the first clamping structure (1) and the second clamping structure (2), and the clamping gap is used to arrange the metal strip; A clamping base (6), the clamping base (6) comprising a fixed portion (62) and a movable clamping portion (63), one end of the first clamping structure (1) being fixed to the fixed portion (62), and the other end of the first clamping structure (1) being connected to the movable clamping portion (63), so that the first clamping structure (1) and the second clamping structure (2) fix the metal strip at a welding position.

2. The support structure according to claim 1, characterized in that: The clamping base (6) comprises a bottom plate (61), the fixing portion (62) is connected to the bottom plate (61), and the movable clamping portion (63) is movably arranged on the bottom plate (61).

3. The support structure according to claim 1, characterized in that: A second flow channel (121) is formed inside the first clamping structure (1), and the second flow channel (121) is used for circulating a cooling medium so as to cool the metal strip.

4. The support structure according to claim 1, characterized in that: The first clamping structure (1) comprises a supporting plate (11) and a cooling plate (12); the cooling plate (12) is arranged on one side of the supporting plate (11) close to the welding area of ​​the metal strip (100); the cooling plate (12) and the supporting plate (11) are used to abut against the surface of the metal strip.

5. The support structure according to claim 4, characterized in that: A second flow channel (121) is formed inside the cooling plate (12), and the second flow channel (121) is used to flow a cooling medium so as to cool the metal strip.

6. The support structure according to claim 4, characterized in that: The length of the carrying plate (11) ranges from 200 mm to 2000 mm.

7. The support structure according to claim 1, characterized in that: The second clamping structure (2) comprises an adjusting member (21) and a limiting member (22), wherein the limiting member (22) is connected to the clamping base (6) via the adjusting member (21), and the limiting member (22) is opposite to the first clamping structure (1) so as to form the clamping gap between the limiting member (22) and the first clamping structure (1); The adjusting member (21) is used to adjust the gap size of the clamping gap so that the limiting member (22) and the first clamping structure (1) clamp the metal strip or release the metal strip.

8. The support structure according to claim 1, characterized in that The first clamping structure (1) further comprises a positioning block (13), and a positioning groove (131) is provided on the positioning block (13); When the first clamping structure (1) and the second clamping structure (2) clamp the metal strip, the positioning groove (131) is used to position the protrusions (108) at both ends of the overlapping area of ​​the metal strip.

9. The support structure according to claim 4, characterized in that: The first clamping structure (1) further comprises a guide block (14), wherein the guide block (14) is arranged at one end of the cooling plate (12) facing the feeding direction of the metal strip.

10. A roll welding device for welding metal strips, characterized in that: Comprising a welding structure (3) and a supporting structure as claimed in any one of claims 1 to 9; The welding structure (3) comprises a rolling welding wheel (31), and the rolling welding wheel (31) is used to weld the overlapping area (101) of the metal strip (100).

11. The seam welding device according to claim 10, characterized in that: The roll welding device comprises a bracket (4) and a pre-pressing structure (5), wherein the pre-pressing structure (5) comprises a pre-pressing component (51) and an elastic member (52), and the pre-pressing component (51) is connected to the bracket (4) via the elastic member (52); The pre-pressing assembly (51) is used to pre-press the overlapping area of ​​the metal strip.

12. The seam welding device according to claim 10, characterized in that: The welding structure (3) comprises a rotating shaft (32), and the rolling welding wheel (31) is sleeved on the rotating shaft (32); A first flow channel (321) is formed inside the rotating shaft (32), and the first flow channel (321) is used to flow a cooling medium to cool the roll welding wheel (31).

13. The seam welding device according to claim 10, characterized in that: The invention also comprises a roll welding main machine, a first conductive block (9) and a second conductive block (10), wherein the first conductive block (9) is connected between the roll welding main machine and the welding structure (3) and is used to energize the welding structure (3), the first clamping structure (1) is a metal clamping structure, and the second conductive block (10) is connected between the metal clamping structure and the roll welding main machine to form a current loop from the roll welding main machine, the first conductive block (9), the welding structure (3), the metal strip, the metal clamping structure, the second conductive block (10) to the roll welding main machine.

14. A pipe making machine, characterized in that: The invention comprises the rolling welding device as described in any one of claims 10 to 13.

Images