A tube shell assembly welding tool

Abstract

The present invention discloses a tube-shell assembly welding tool, comprising a clamping mechanism for clamping the tube-shell assembly and a rotating mechanism for driving the clamping mechanism to rotate so that each welding surface of the tube-shell assembly clamped in the clamping mechanism sequentially faces a laser welding head. The clamping mechanism includes a first clamping portion provided on an output shaft of the rotating mechanism and used to abut a first end surface of the tube-shell assembly, a second clamping portion for abutting a second end surface of the tube-shell assembly opposite to the first end surface toward the first clamping portion, and at least one connecting member provided between the first clamping portion and the second clamping portion and used to connect the first clamping portion and the second clamping portion. After the tube-shell assembly is clamped between the first clamping portion and the second clamping portion, the vertical projection of the connecting member on the plane where each welding surface is located is located outside the corresponding welding surface. Due to the adoption of the above technical solution, each welding surface of the tube-shell assembly can be welded in a single clamping operation, which can significantly improve production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of tooling fixtures, and in particular to a tube-shell assembly welding tool. Background Art

[0002] like Figure 1 The figure shows a tube and shell assembly, which includes a tube and shell body 11, a first cover plate 12 provided on one end surface of the tube and shell body 11 and adapted to the one end surface of the tube and shell body 11, and a second cover plate 13 provided on the other opposite end surface of the tube and shell body 11 and adapted to the other opposite end surface of the tube and shell body 11. The two opposite sides of the other opposite end of the tube and shell body 11 are protruded with convex plates 111. After the module circuit is assembled, the first cover plate 12 and the second cover plate 13 need to be welded to the tube shell body 11 so that the tube shell body 11, the first cover plate 12 and the second cover plate 13 form an integral tube shell assembly 1. During welding, the four edges of the first cover plate 12 need to be welded together with the four edges of the first end face of the tube shell assembly 1, and the four edges of the second cover plate 13 need to be welded together with the four edges of the other opposite end face of the tube shell body 11. That is, it is necessary to weld the other side faces of the tube shell body 11 except the one end face of the tube shell body 11 and the other opposite end face of the tube shell body 11. After welding is completed, the side face of the tube shell assembly 1 with the weld 14 is the welding surface of the tube shell assembly 1.

[0003] During welding, the shell and tube assembly needs to be placed inside a vacuum container for welding, that is, the shell and tube assembly needs to be clamped on a welding fixture inside the vacuum container, and then the vacuum container is evacuated, and then the laser welding head located inside the vacuum container welds the shell and tube assembly. However, when using the existing shell and tube assembly welding fixture to clamp the shell and tube assembly, only one side of the shell and tube assembly can face the laser welding head, and the other sides will be blocked by the existing shell and tube assembly welding fixture, resulting in welding only on one welding surface at a time. After welding one welding surface, the vacuum container needs to be opened, the shell and tube assembly needs to be re-clamped, so that the welding surface on the other side of the shell and tube assembly faces the laser welding head, and then vacuum is pumped again and welding is performed again. Welding one shell and tube assembly requires four clamping and four vacuum pumping times, which results in extremely low production efficiency. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present application is to provide a tube-shell assembly welding tool with high production efficiency.

[0005] In order to solve the above technical problems, the present application provides a tube and shell assembly welding tool, including a clamping mechanism for clamping the tube and shell assembly and a rotating mechanism for driving the clamping mechanism to rotate so that the welding surfaces of the tube and shell assembly clamped in the clamping mechanism are sequentially oriented towards the laser welding head. The clamping mechanism includes a first clamping portion provided on the output shaft of the rotating mechanism and used to abut the first end face of the tube and shell assembly, a second clamping portion for abutting the second end face of the tube and shell assembly opposite to the first end face toward the first clamping portion, and at least one connecting member provided between the first clamping portion and the second clamping portion and used to connect the first clamping portion and the second clamping portion. After the tube and shell assembly is clamped between the first clamping portion and the second clamping portion, the vertical projections of the connecting member on the plane where each welding surface is located are all located outside the corresponding welding surface.

[0006] Furthermore, the second clamping portion includes a mounting plate, a pushing block arranged between the mounting plate and the first clamping portion, and a pushing piece arranged on the mounting plate, the pushing piece being used to push the pushing block toward the first clamping portion so that the pushing block presses against the second end face of the tube shell assembly toward the first clamping portion; the connecting piece is arranged between the first clamping portion and the mounting plate and is used to connect the first clamping portion and the mounting plate.

[0007] Furthermore, when the pushing block abuts against the second end surface of the tube and housing assembly toward the first clamping portion, the edge of the pushing block is located within the range of the second end surface of the tube and housing assembly.

[0008] Furthermore, the second clamping portion further includes a guide portion for guiding the movement of the pushing block toward or away from the first clamping portion.

[0009] Furthermore, the first clamping portion includes a clamping plate and a clamping block protruding from the clamping plate toward the mounting plate and used to abut the first end face of the tube and shell assembly. When the clamping block abuts the first end face of the tube and shell assembly, the edge of the clamping block is located within the range of the first end face of the tube and shell assembly; the connecting member is provided between the clamping plate and the mounting plate and is used to connect the clamping plate and the mounting plate.

[0010] Furthermore, the tube and shell assembly includes a tube and shell body, a first cover plate provided on one end surface of the tube and shell body and adapted to the one end surface of the tube and shell body, and a second cover plate provided on the other opposite end surface of the tube and shell body and adapted to the other opposite end surface of the tube and shell; the welding tool also includes a positioning mechanism, which is used to position the first cover plate on the one end surface of the tube and shell body so that the first cover plate is aligned with the one end surface of the tube and shell body, and the positioning mechanism is also used to position the second cover plate on the other opposite end surface of the tube and shell body so that the second cover plate is aligned with the other opposite end surface of the tube and shell body.

[0011] Furthermore, the positioning mechanism includes a first positioning portion for positioning the tube shell body, the first cover plate and the second cover plate so that the first cover plate and the second cover plate are aligned with the tube shell body in a first direction, and a second positioning portion for positioning the tube shell body, the first cover plate and the second cover plate so that the first cover plate and the second cover plate are aligned with the tube shell body in a second direction perpendicular to the first direction.

[0012] Furthermore, both opposite sides of the other opposite end of the tube shell body are protruded along the second direction to form a convex plate; the second positioning portion includes a first positioning plate for positioning the tube shell body and the first cover plate so that the first cover plate is aligned with the tube shell body in the second direction, and a second positioning plate for positioning the tube shell body and the second cover plate so that the second cover plate is aligned with the tube shell body in the second direction.

[0013] Furthermore, the first positioning portion includes a positioning support for positioning the tube shell body, the first cover plate and the second cover plate so that the first cover plate and the second cover plate are aligned with the tube shell body in a first direction, a first positioning protrusion formed on one side of the positioning support and a second positioning protrusion formed on the other side opposite to the positioning support; a first positioning groove adapted to the first positioning protrusion is formed on the clamping plate, and a second positioning groove adapted to the second positioning protrusion is formed on the mounting plate. When the first positioning groove and the second positioning groove are respectively assembled on the first positioning protrusion and the second positioning protrusion, the tube shell assembly is located between the pushing block and the clamping block, and the projection of the pushing block on the second cover plate is located within the range of the second cover plate, and the projection of the clamping block on the first cover plate is located within the range of the first cover plate.

[0014] Furthermore, the first positioning protrusion has two first positioning block inclined surfaces symmetrically arranged and opened in an eight-shape, and the second positioning protrusion has two second positioning block inclined surfaces symmetrically arranged and opened in an eight-shape; the first positioning groove and the corresponding positions of the two first positioning block inclined surfaces have two first positioning groove inclined surfaces symmetrically arranged and opened in an eight-shape, and the first positioning groove inclined surface is adapted to the first positioning block inclined surface, and the second positioning groove and the corresponding positions of the two second positioning block inclined surfaces have two second positioning groove inclined surfaces symmetrically arranged and opened in an eight-shape, and the second positioning groove inclined surface is adapted to the second positioning block inclined surface.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] When welding a tube-shell assembly using the tube-shell assembly welding fixture described in the present invention, the first clamping portion and the second clamping portion relatively clamp the tube-shell assembly, and the rotating mechanism drives the clamping mechanism to rotate so that each welding surface of the tube-shell assembly can face the laser welding head. After the tube-shell assembly is clamped between the first clamping portion and the second clamping portion, the vertical projection of the connecting member on the plane where each welding surface is located is located outside the corresponding welding surface, that is, the connecting member does not block the welding surfaces of the tube-shell assembly, allowing the laser welding head to weld each welding surface. When welding a tube-shell assembly using the tube-shell assembly welding fixture described in the present invention, each welding surface of the tube-shell assembly can be welded in one clamping, which can significantly improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a structural diagram of the shell and tube assembly;

[0019] Figure 2 It is a structural schematic diagram of a preferred embodiment of a tube-shell assembly welding tool;

[0020] Figure 3 This is an exploded view of the structure of the clamping mechanism in the tube-shell assembly welding fixture;

[0021] Figure 4 The present invention is a structural diagram of a positioning mechanism in a tube-shell assembly welding tool.

[0022] The meanings of the reference numerals in the accompanying drawings are:

[0023] Tube and shell assembly-1; tube and shell body-11; first cover plate-12; second cover plate-13; protruding plate-111; weld-14; clamping mechanism-2; rotating mechanism-3; connecting portion-4; positioning mechanism-5; first clamping portion-21; second clamping portion-22; connecting member-23; clamping plate-211; clamping block-212; plug-in block-213; first positioning groove-2111; first weight-reducing groove-2112; first through hole-2113; mounting plate-221; pushing block-222; pushing member-223; guide portion-224; second positioning groove-2211; second weight-reducing groove- 2212; second through hole 2213; third through hole 2214; first screw hole 2215; channel 2221; screw rod 2231; knob 2232; guide rod 2241; connecting column 231; first bolt 232; second bolt 233; connecting sleeve 41; connecting groove 411; first positioning portion 51; second positioning portion 52; first positioning plate 521; second positioning plate 522; positioning support 511; first positioning protrusion 512; second positioning protrusion 513; first positioning block inclined surface 5121; second positioning block inclined surface 5122. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] like Figure 2As shown, an embodiment of a tube-shell assembly welding fixture of the present invention includes a clamping mechanism 2, a rotating mechanism 3, a connecting portion 4, and a positioning mechanism 5. The clamping mechanism 2 is used to clamp the tube-shell assembly 1. The rotating mechanism 3 is a motor. The connecting portion 4 is used to detachably connect the clamping mechanism 2 to the output shaft of the rotating mechanism 3. It can be understood that the clamping mechanism 2 and the rotating mechanism 3 are not limited to the connection method described above. For example, in some embodiments, the connecting portion 4 can also non-detachably fixedly connect the clamping mechanism 2 to the output shaft of the rotating mechanism 3. The rotating mechanism 3 is used to drive the clamping mechanism 2 to rotate so that the various welding surfaces of the tube-shell assembly 1 clamped in the clamping mechanism 2 are sequentially oriented toward the laser welding head. The welding surface refers to the side of the tube-shell assembly 1 having the weld 14 after the welding of the tube-shell assembly 1 is completed. The clamping mechanism 2 includes a first clamping portion 21, a second clamping portion 22, and a connecting member 23. The first clamping portion 21 is provided on the output shaft of the rotating mechanism 3. The first clamping portion 21 is used to abut the first end face of the tube-shell assembly 1. The second clamping portion 22 is used to abut the second end face of the tube-shell assembly 1 opposite to the first end face, facing the first clamping portion 21. There are four connecting members 23. In other embodiments, the number of connecting members 23 can also be other. The connecting member 23 is provided between the first clamping portion 21 and the second clamping portion 22. The connecting member 23 is used to connect the first clamping portion 21 and the second clamping portion 22. After the tube-shell assembly 1 is clamped between the first clamping portion 21 and the second clamping portion 22, the vertical projection of the connecting member 23 on the plane where each welding surface is located is located outside the corresponding welding surface. The positioning mechanism 5 is used to achieve the positioning of the first cover plate 12 and the second cover plate 13 on the tube-shell body 11, thereby ensuring the assembly accuracy of the tube-shell assembly 1. The tube and shell assembly 1 welding fixture described in the present invention has the advantage of high production efficiency. When using the tube and shell assembly welding fixture described in the present invention to weld the tube and shell assembly 1, the first clamping part 21 and the second clamping part 22 relatively clamp the tube and shell assembly 1, and the rotating mechanism 3 drives the clamping mechanism 2 to rotate so that each welding surface of the tube and shell assembly 1 can face the laser welding head. After the tube and shell assembly 1 is clamped between the first clamping part 21 and the second clamping part 22, the vertical projections of the connecting member 23 on the plane where each welding surface is located are all located outside the corresponding welding surface, that is, the connecting member 23 will not block the welding surfaces of the tube and shell assembly 1, so that the laser welding head can weld each welding surface. When using the tube and shell assembly welding fixture described in the present invention to weld the tube and shell assembly 1, each welding surface of the tube and shell assembly 1 can be welded in one clamping. The function of the positioning mechanism 5 is only to ensure the assembly accuracy of the tube and shell assembly 1, and it is not a necessary structure of the present invention.In addition, the rotating mechanism 3 is not limited to the structure described above. For example, in some embodiments, the rotating mechanism 3 may also include a motor and a reducer, and the output shaft of the motor is connected to the input shaft of the reducer.

[0028] like Figure 3 As shown, the first clamping part 21 includes a clamping plate 211, a clamping block 212 and a plug-in block 213. The clamping plate 211 is detachably connected to the output shaft of the rotating mechanism 3 through the connecting part 4. The clamping block 212 protrudes from the clamping plate 211 toward the second clamping part 22, and the plug-in block 213 protrudes from the clamping plate 211 away from the clamping block 212. The clamping plate 211 is connected to the connecting part 4 through the plug-in block 213. The clamping block 212 is used to abut the first end face of the tube and shell assembly 1. When the clamping block 212 abuts the first end face of the tube and shell assembly 1, the edge of the clamping block 212 is located within the range of the first end face of the tube and shell assembly 1; the connecting member 23 is arranged between the clamping plate 211 and the second clamping part 22 and is used to connect the clamping plate 211 and the second clamping part 22. During the welding process of the tube-shell assembly 1, a clamping block 212 is provided between the clamping plate 211 and the first end face of the tube-shell assembly 1, and the edge of the clamping block 212 is located within the range of the first end face of the tube-shell assembly 1. During the welding of the tube-shell assembly 1, the laser beam with the welding focus on the tube-shell assembly 1 is prevented from melting the first clamping portion 21, thereby reducing the probability of impurities entering the tube-shell assembly 1. It will be appreciated that in some embodiments, the clamping plate 211 may also be non-detachably fixed to the output shaft of the rotating mechanism 3.

[0029] The clamping plate 211 is formed with a first positioning groove 2111, a first weight-reducing groove 2112, and four first through holes 2113. There are two first positioning grooves 2111, which are formed on two opposite sides of the clamping plate 211. The first positioning groove 2111 has two first positioning groove inclined surfaces that are symmetrically arranged and open in an eight-shaped pattern away from the middle of the clamping plate 211. There are two first weight-reducing grooves 2112, which are located on the other two opposite sides of the clamping plate 211. The four first through holes 2113 are respectively located at positions on the clamping plate 211 corresponding to the four connecting members 23. The first weight-reducing grooves 2112 can reduce the weight of the clamping plate 211, thereby reducing the weight of the clamping mechanism 2, making it easier to pick up the clamping mechanism 2.

[0030] The second clamping portion 22 includes a mounting plate 221, a pushing block 222, a pushing piece 223 and a guide portion 224. The pushing block 222 is arranged between the mounting plate 221 and the first clamping portion 21, and the pushing piece 223 is arranged on the mounting plate 221. The pushing piece 223 is used to push the pushing block 222 toward the first clamping portion 21. Specifically, the pushing piece 223 is used to push the pushing block 222 toward the clamping block 212 so that the pushing block 222 presses against the second end surface of the tube shell assembly 1 toward the first clamping portion 21; the connecting piece 23 is arranged between the first clamping portion 21 and the mounting plate 221 and is used to connect the first clamping portion 21 and the mounting plate 221. Specifically, the connecting piece 23 is arranged between the clamping plate 211 and the mounting plate 221 and is used to connect the clamping plate 211 and the mounting plate 221. The clamping block 212 protrudes from the clamping plate 211 toward the mounting plate 221. When clamping the housing assembly 1, the housing assembly 1 is positioned between the clamping plate 211 and the pushing block 222, with the center of the housing assembly 1 aligned with the clamping block 212 and the pushing block 222. The housing body 11 is positioned between the first cover plate 12 and the second cover plate 13, with the first cover plate 12 positioned on the side of the housing body 11 closer to the clamping block 212 and the second cover plate 13 positioned on the side of the housing body 11 closer to the pushing block 222. The pushing member 223 then pushes the pushing block 222 toward the clamping block 212, clamping the housing assembly 1 between the pushing block 222 and the clamping block 212. At this point, the first cover plate 12 is pressed against one end of the housing body 11, and the second cover plate 13 is pressed against the opposite end of the housing body 11. It is very convenient to use the tube-shell assembly welding tool of the present invention to clamp the tube-shell assembly 1 .

[0031] The mounting plate 221 is formed with a second positioning groove 2211, a second weight-reducing groove 2212, a second through hole 2213, a third through hole 2214, and a first screw hole 2215. There are two second positioning grooves 2211, and the two second positioning grooves 2211 are respectively located at positions corresponding to the two first positioning grooves 2111 on two opposite sides of the mounting plate 221. The second positioning groove 2211 has two second positioning groove inclined surfaces that are symmetrically arranged and open in an eight-shaped shape away from the middle direction of the mounting plate 221. There are two second weight-reducing grooves 2212, and the two second weight-reducing grooves 2212 are respectively located at positions corresponding to the two first weight-reducing grooves 2112 on two opposite sides of the mounting plate 221. There are four second through holes 2213, and the four second through holes 2213 are respectively located at positions on the mounting plate 221 corresponding to the four connecting members 23. In other embodiments, the number of second through holes can also be other. There are four third through holes 2214, all located on the mounting plate 221 at positions corresponding to the push block 222. In other embodiments, there may be two or more third through holes 2214. The first screw hole 2215 is located in the middle of the mounting plate 221 and is used to mount the push member 223. The provision of the second weight-reducing slot 2212 reduces the weight of the mounting plate 221, thereby reducing the weight of the clamping mechanism 2, making it easier to handle.

[0032] A hole 2221 is defined on the pushing block 222 at a position corresponding to each of the third through holes 2214. When the pushing block 222 abuts the second end face of the housing assembly 1 toward the first clamping portion 21, the edge of the pushing block 222 is located within the second end face of the housing assembly 1. During welding of the housing assembly 1, the edge of the pushing block 222 is located within the second end face of the housing assembly 1. This prevents the laser beam, whose welding focus is on the housing assembly 1, from melting the pushing block 222, thereby reducing the likelihood of impurities entering the housing assembly 1.

[0033] The pushing member 223 includes a screw rod 2231 screwed into the first screw hole 2215 and a knob 2232 provided at a first end of the screw rod 2231. The second end of the screw rod 2231 passes through the first screw hole 2215 toward the clamping plate 211 and then abuts against the pushing block 222. By simply turning the knob 2232, the screw rod 2231 rotates within the first screw hole 2215 and moves toward the clamping plate 211, thereby pushing the pushing block 222 toward the clamping block 212. This is very convenient when pushing the pushing block 222. It is understood that in some embodiments, the pushing member 223 may include only the screw rod 2231. When it is necessary to push the pushing block 222 toward the clamping block 212, the screw rod 2231 can be directly turned.

[0034] The guide portion 224 is used to guide the movement of the push block 222 toward or away from the first clamping portion 21. The guide portion 224 includes four guide rods 2241 corresponding to the four third through holes 2214, respectively. The guide rods 2241 are adapted to fit both the third through holes 2214 and the channels 2221. One end of the guide rod 2241 is fixed within the corresponding third through hole 2214, while the other end of the guide rod 2241 extends toward the clamping block 212 and into the corresponding channel 2221. The guide rods 2241 simultaneously support and guide the push block 222, maintaining it between the clamping block 212 and the mounting plate 221. The guide rods 2241 also guide the movement of the push block 222 toward or away from the mounting block. It is understood that the number of guide rods 2241 is not limited to four, but may be two or more.

[0035] The connecting member 23 includes a connecting post 231 provided between the clamping plate 211 and the mounting plate 221, a second screw hole formed inwardly from the connecting post 231 toward one end surface of the clamping plate 211, a first bolt 232 screwed into the second screw hole, a third screw hole formed inwardly from the connecting post 231 toward one end surface of the mounting plate 221, and a second bolt 233 screwed into the third screw hole. The screwed-in end of the first bolt 232 passes through the corresponding first through hole 2113 and then screws into the second screw hole. The screwed-in end of the second bolt 233 passes through the corresponding second through hole 2213 and then screws into the third screw hole. In this way, the connecting member 23 can achieve the connection between the clamping plate 211 and the mounting plate 221, and further achieve the connection between the first clamping portion 21 and the second clamping portion 22. It can be understood that the connecting member 23 is not limited to the structure described above. For example, in some embodiments, the first bolt 232 can be omitted, and the end of the connecting column 231 facing the clamping plate 211 is directly welded and fixed to the clamping plate 211, and the end of the connecting column 231 facing the mounting plate 221 is still connected to the mounting plate 221 by the second bolt 233.

[0036] The connecting portion 4 includes a connecting sleeve 41 fixed on the output shaft of the rotating mechanism 3. A connecting groove 411 adapted to the plug-in block 213 is formed on the connecting sleeve 41 at a position corresponding to the plug-in block 213. The plug-in block 213 is inserted into the connecting groove 411, thereby realizing a detachable connection between the clamping plate 211 and the output shaft of the rotating mechanism 3. It can be understood that the connecting portion 4 is not limited to the structure described above. For example, in some embodiments, the connecting sleeve 41 also has a fourth screw hole with one end passing through the side wall of the connecting groove 411 and the other end passing through the outer surface of the connecting sleeve 41. The connecting portion 4 also includes a third bolt screwed into the fourth screw hole. The screwed-in end of the third bolt passes through the fourth screw hole and abuts against the plug-in block 213. This structure can also realize a detachable connection between the clamping plate 211 and the output shaft of the rotating mechanism 3, and the connection is more stable.

[0037] like Figure 4 As shown, the positioning mechanism 5 is used to position the first cover plate 12 on the one end surface of the tube shell body 11 so that the first cover plate 12 is aligned with the one end surface of the tube shell body 11. The positioning mechanism 5 is also used to position the second cover plate 13 on the other opposite end surface of the tube shell body 11 so that the second cover plate 13 is aligned with the other opposite end surface of the tube shell body 11, thereby realizing the positioning of the first cover plate 12 and the second cover plate 13 on the tube shell body 11, thereby ensuring the assembly accuracy of the tube shell assembly 1.

[0038] The positioning mechanism 5 includes a first positioning portion 51 and a second positioning portion 52. The first positioning portion 51 is used to position the housing body 11, the first cover plate 12, and the second cover plate 13 so that the first cover plate 12 and the second cover plate 13 are aligned with the housing body 11 in a first direction. The second positioning portion 52 is used to position the housing body 11, the first cover plate 12, and the second cover plate 13 so that the first cover plate 12 and the second cover plate 13 are aligned with the housing body 11 in a second direction perpendicular to the first direction. The first positioning portion 51 enables positioning of the first cover plate 12 and the second cover plate 13 in the first direction of the housing body 11. The second positioning portion 52 enables positioning of the first cover plate 12 and the second cover plate 13 in the second direction of the housing body 11, thereby achieving positioning of the first cover plate 12 and the second cover plate 13 on the housing body 11.

[0039] Both opposing sides of the other end of the housing body 11 are formed with protruding plates 111 protruding along the second direction. The second positioning portion 52 includes a first positioning plate 521 for positioning the housing body 11 and the first cover plate 12 so that the first cover plate 12 is aligned with the housing body 11 in the second direction, and a second positioning plate 522 for positioning the housing body 11 and the second cover plate 13 so that the second cover plate 13 is aligned with the housing body 11 in the second direction. The first positioning plate 521 enables relative positioning of the first cover plate 12 and the housing body 11 in the second direction, and the second positioning plate 522 enables relative positioning of the second cover plate 13 and the housing body 11 in the second direction.

[0040] The first positioning portion 51 includes a positioning support 511, a first positioning protrusion 512, and a second positioning protrusion 513. The positioning support 511 is used to position the tube shell body 11, the first cover plate 12, and the second cover plate 13 so that the first cover plate 12 and the second cover plate 13 are aligned with the tube shell body 11 in the first direction. The first positioning protrusion 512 is formed on one side of the positioning support 511, and the second positioning protrusion 513 is formed on the other side opposite to the positioning support 511. The first positioning protrusion 512 and the first positioning groove 2 111 are adapted, the second positioning protrusion 513 is adapted to the second positioning groove 2211, and when the first positioning groove 2111 and the second positioning groove 2211 are respectively assembled on the first positioning protrusion 512 and the second positioning protrusion 513, the tube shell assembly 1 is located between the pushing block 222 and the clamping block 212, and the projection of the pushing block 222 on the second cover plate 13 is located within the range of the second cover plate 13, and the projection of the clamping block 212 on the first cover plate 12 is located within the range of the first cover plate 12. When the clamping plate 211 and the mounting plate 221 are assembled on the positioning support 511, the first positioning groove 2111 is assembled on the first protrusion, and the second positioning groove 2211 is assembled on the second positioning protrusion 513. The pushing piece 223 pushes the pushing block 222 toward the clamping block 212 until the pushing block 222 and the clamping block 212 clamp the tube housing assembly 1 between them. At this time, the edge of the clamping block 212 can be directly located within the range of the first end surface of the tube housing assembly 1, and the edge of the pushing block 222 can be directly located within the range of the second end surface of the tube housing assembly 1. It is very convenient to ensure that the edge of the clamping block 212 is located within the range of the first end surface of the tube housing assembly 1 and the edge of the pushing block 222 is located within the range of the second end surface of the tube housing assembly 1.

[0041] The first positioning protrusion 512 has two first positioning block inclined surfaces 5121, which are symmetrically arranged and open in an "eight" shape. The two first positioning block inclined surfaces 5121 are located on the first positioning protrusion 512 at positions corresponding to the two first positioning groove inclined surfaces, and the first positioning block inclined surfaces 5121 are adapted to the first positioning groove inclined surfaces. The second positioning protrusion 513 has two second positioning block inclined surfaces 5122, which are symmetrically arranged and open in an "eight" shape. The two second positioning block inclined surfaces 5122 are located on the second positioning protrusion 513 at positions corresponding to the two second positioning groove inclined surfaces, and the second positioning block inclined surfaces 5122 are adapted to the second positioning groove inclined surfaces. This structure makes it easier to install the first positioning groove on the first positioning block and the second positioning groove on the second positioning block, thereby making it easier to assemble the clamping plate 211 and the mounting plate 221 on the positioning support 511.

[0042] The operating principle of the tube-shell assembly welding tool described in the present invention is as follows:

[0043] First, the first cover plate 12 and the second cover plate 13 are positioned on the housing body 11. The positioning process is as follows: the side surfaces of the housing body 11, the first cover plate 12, and the second cover plate 13 perpendicular to their width are simultaneously supported on the positioning support 511, and the housing body 11 is positioned between the first cover plate 12 and the second cover plate 13. The first cover plate 12 and the side surface of the housing body perpendicular to its length are simultaneously supported on the first positioning plate 521, and the side surface of the second cover plate 13 and a protruding plate 111 of the housing body 11 perpendicular to its length are simultaneously abutted against the second positioning plate 522. At this point, the first cover plate 12 and the second cover plate 13 are positioned on the housing body 11. The first cover plate 12 is now aligned with one end surface of the housing body 11, and the second cover plate 13 is aligned with the opposite end surface of the housing body 11. The clamping mechanism 2 is then assembled on the positioning support 511, a first positioning groove 2111 on the clamping plate 211 is assembled on the first positioning protrusion 512, and a second positioning groove 2211 on the mounting plate 221 is assembled on the second positioning protrusion 513, thereby completing the assembly of the clamping mechanism 2 and the positioning support 511. The tube and housing assembly 1 is then clamped on the positioning mechanism 5. During clamping, the knob 2232 is rotated, and the screw 2231 rotates with the knob 2232 and moves toward the direction of the clamping block 212. The screw 2231 pushes the pushing block 222 toward the clamping block 212 until the pushing block 222 clamps the tube and housing assembly 1 between the clamping block 212 and the pushing block 222, thereby completing the clamping of the tube and housing assembly 1 by the clamping mechanism 2. The clamping mechanism 2 is then removed from the positioning support 511 and installed on the connecting portion 4 on the output shaft of the rotating mechanism 3 located within the vacuum container. During installation, the plug-in block 213 is inserted into the connecting groove 411, completing the installation of the clamping mechanism 2 on the rotating mechanism 3. The vacuum container can then be evacuated and the tube-shell assembly 1 can be welded. During the welding process, the rotating mechanism 3 can drive the clamping mechanism 2 to rotate so that the various welding surfaces of the tube-shell assembly 1 are sequentially oriented toward the welding head of the laser welder. All welding surfaces of the tube-shell assembly 1 can be welded in a single clamping operation.

[0044] The above embodiments merely represent preferred embodiments of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A tube-shell assembly welding tool, characterized by: The invention relates to a laser welding machine, wherein the laser welding machine comprises a clamping mechanism for clamping the tube-shell assembly and a rotating mechanism for driving the clamping mechanism to rotate so that each welding surface of the tube-shell assembly clamped in the clamping mechanism faces the laser welding head in sequence. The clamping mechanism comprises a first clamping portion provided on the output shaft of the rotating mechanism and used to abut against the first end face of the tube-shell assembly, a second clamping portion for abutting against the second end face of the tube-shell assembly opposite to the first end face toward the first clamping portion, and at least one connecting member provided between the first clamping portion and the second clamping portion and used to connect the first clamping portion and the second clamping portion. After the assembly is clamped between the first clamping portion and the second clamping portion, the vertical projections of the connecting member on the plane where each welding surface is located are all located outside the corresponding welding surface; the second clamping portion includes a mounting plate, a pushing block arranged between the mounting plate and the first clamping portion, and a pushing member arranged on the mounting plate, the pushing member being used to push the pushing block toward the first clamping portion so that the pushing block presses against the second end face of the tube and shell assembly toward the first clamping portion; the connecting member is arranged between the first clamping portion and the mounting plate and is used to connect the first clamping portion and the mounting plate.

2. The tube-shell assembly welding tool according to claim 1, characterized in that: When the pushing block abuts against the second end surface of the tube and housing assembly toward the first clamping portion, the edge of the pushing block is located within the range of the second end surface of the tube and housing assembly.

3. The tube-shell assembly welding tool according to claim 2, characterized in that: The second clamping portion further includes a guide portion for guiding the push block to move toward or away from the first clamping portion.

4. The tube-shell assembly welding tool according to claim 2, characterized in that: The first clamping portion includes a clamping plate and a clamping block protruding from the clamping plate toward the mounting plate and used to abut the first end face of the tube and shell assembly. When the clamping block abuts the first end face of the tube and shell assembly, the edge of the clamping block is located within the range of the first end face of the tube and shell assembly; the connecting member is provided between the clamping plate and the mounting plate and is used to connect the clamping plate and the mounting plate.

5. A tube-shell assembly welding tool as claimed in any one of claims 4, characterized in that: The tube and shell assembly includes a tube and shell body, a first cover plate provided on one end surface of the tube and shell body and adapted to the one end surface of the tube and shell body, and a second cover plate provided on the other opposite end surface of the tube and shell body and adapted to the other opposite end surface of the tube and shell; the welding tool also includes a positioning mechanism, which is used to position the first cover plate on the one end surface of the tube and shell body so that the first cover plate is aligned with the one end surface of the tube and shell body, and the positioning mechanism is also used to position the second cover plate on the other opposite end surface of the tube and shell body so that the second cover plate is aligned with the other opposite end surface of the tube and shell body.

6. The tube-shell assembly welding tool according to claim 5, characterized in that: The positioning mechanism includes a first positioning portion for positioning the tube shell body, the first cover plate and the second cover plate so that the first cover plate and the second cover plate are aligned with the tube shell body in a first direction, and a second positioning portion for positioning the tube shell body, the first cover plate and the second cover plate so that the first cover plate and the second cover plate are aligned with the tube shell body in a second direction perpendicular to the first direction.

7. The tube-shell assembly welding tool according to claim 6, characterized in that: Both opposite sides of the other opposite end of the tube shell body are protruded along the second direction to form a convex plate; the second positioning portion includes a first positioning plate for positioning the tube shell body and the first cover plate so that the first cover plate is aligned with the tube shell body in the second direction, and a second positioning plate for positioning the tube shell body and the second cover plate so that the second cover plate is aligned with the tube shell body in the second direction.

8. The tube-shell assembly welding tool according to claim 6, characterized in that: The first positioning portion includes a positioning support for positioning the tube shell body, the first cover plate and the second cover plate so that the first cover plate and the second cover plate are aligned with the tube shell body in a first direction, a first positioning protrusion formed on one side of the positioning support and a second positioning protrusion formed on the other side opposite to the positioning support; a first positioning groove adapted to the first positioning protrusion is formed on the clamping plate, and a second positioning groove adapted to the second positioning protrusion is formed on the mounting plate. When the first positioning groove and the second positioning groove are respectively assembled on the first positioning protrusion and the second positioning protrusion, the tube shell assembly is located between the pushing block and the clamping block, and the projection of the pushing block on the second cover plate is located within the range of the second cover plate, and the projection of the clamping block on the first cover plate is located within the range of the first cover plate.

9. The tube-shell assembly welding tool according to claim 6, characterized in that: The first positioning protrusion has two first positioning block inclined surfaces which are symmetrically arranged and opened in an eight-shape, and the second positioning protrusion has two second positioning block inclined surfaces which are symmetrically arranged and opened in an eight-shape; the first positioning groove and the corresponding positions of the two first positioning block inclined surfaces have two first positioning groove inclined surfaces which are symmetrically arranged and opened in an eight-shape, and the first positioning groove inclined surface is adapted to the first positioning block inclined surface, and the second positioning groove and the corresponding positions of the two second positioning block inclined surfaces have two second positioning groove inclined surfaces which are symmetrically arranged and opened in an eight-shape, and the second positioning groove inclined surface is adapted to the second positioning block inclined surface.

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