An automatic laser welding device for an aluminum alloy automotive battery housing

Abstract

The present invention relates to the technical field of laser welding, and particularly relates to an automatic laser welding device for an aluminum alloy automobile battery case; it includes an equipment frame; a bottom plate is fixedly installed on the equipment frame, and a conveying mechanism and a welding mechanism are arranged on the bottom plate; in the present invention, through the conveying mechanism, the feeding and processing of the battery case are realized, and the conveying and discharging of the welded battery case are carried out, so as to reduce manual operation, ensure the continuity of the production and processing of the battery case, and at the same time weld two battery cases, improving the welding processing efficiency of the battery case. And by driving the fixed battery case to rotate through the driving part and driving the welding assembly to adjust the position left and right through the guiding part, the continuous progress of the welding processing is ensured, and the structure is simple, reducing the manufacturing and maintenance costs.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, and in particular to automatic laser welding equipment for an aluminum alloy automobile battery shell. Background Art

[0002] The aluminum alloy automobile battery casing is an important component used to encapsulate and protect power batteries in new energy vehicles. It is mainly composed of a rectangular tube, a bottom cover and a cover plate. The bottom cover is usually embedded in the rectangular tube first and then fixed to the rectangular tube by laser welding. After the battery pack is placed in the rectangular tube, the cover plate is fixed to the other end of the rectangular tube in a detachable manner to seal it for subsequent disassembly and maintenance.

[0003] When welding the bottom cover to the rectangular tube, it is usually necessary to first fix the rectangular tube with a clamp on a rotating table, and then embed the bottom cover into the rectangular tube. The pressing plate then squeezes the bottom cover to make it fit tightly against the rotating table. After that, the rotating table drives the fixed rectangular tube and bottom cover to rotate, and the welding robot moves accordingly to perform welding processing on the battery casing.

[0004] However, the following problems currently exist in the welding process of the bottom cover of the battery casing: the existing welding method requires manual placement of the battery casing, which takes a long time to load and unload, and can only weld one battery casing at a time. Therefore, during the production process, the battery casing needs to be frequently disassembled and assembled, which affects the overall efficiency of the battery casing production and processing. Secondly, the manufacturing and maintenance costs of welding processing using welding robots are high. Summary of the invention

[0005] In view of the above problems, an embodiment of the present application provides an automatic laser welding device for an aluminum alloy automobile battery casing to solve the above-mentioned technical problems.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solution: The embodiment of the present application provides an automatic laser welding device for aluminum alloy automobile battery casing, including an equipment frame; a base plate is fixedly installed on the equipment frame, and a conveying mechanism and a welding mechanism are arranged on the base plate.

[0007] The conveying mechanism includes a support assembly, and two groups of left-right symmetrical support assemblies are arranged on the upper end of the base plate. Each group of support assemblies is composed of two left-right symmetrical support plates. A plurality of rollers are installed between the two support plates in the same group so as to rotate evenly from front to back. Two adjacent rollers are connected by a No. 1 pulley mechanism. A connecting rod is fixedly connected between the two rollers that are opposite to each other in the two groups of support assemblies.

[0008] The welding mechanism includes an inverted shaped plate, an inverted shaped plate is fixedly installed on the upper end of the base plate and located between the two groups of support components, a telescopic cylinder is fixedly installed on the upper end of the inverted shaped plate, the telescopic section of the telescopic cylinder slides through the inverted shaped plate and then fixedly installed with a fixed plate, a slider corresponding to the support components is slidably installed on the lower end of the fixed plate, and a welding component is fixedly installed on the lower end of the slider.

[0009] The bottom plate is provided with fixing parts for fixing the rectangular tube at positions corresponding to the supporting components one by one, the fixing plate is provided with a pressing part for pressing down the battery housing to drive the fixing part to fix the rectangular tube, the pressing part is provided with a guide part for driving the welding assembly to move left and right to maintain the welding processing of the weld, and the bottom plate and the fixing plate are jointly provided with a driving part for driving the fixing part and the pressing part to move up and down and rotate.

[0010] As a preferred embodiment, the fixed part includes a support plate, a support plate is arranged between two adjacent rollers, two left-right symmetrical material guide plates are arranged between the two support plates and above the rollers, two pillars are arranged at the lower ends of the material guide plates and at positions corresponding to the support plates, the lower ends of the pillars are fixedly connected to the corresponding upper ends of the support plates, and two left-right symmetrical No. 1 spline sleeves are rotatably installed on the upper end of the base plate, both ends of the No. 1 spline sleeve pass through the base plate, a No. 1 spline shaft is coaxially slidably installed on the No. 1 spline sleeve, the upper end of the No. 1 spline shaft passes through the No. 1 spline sleeve and is fixedly connected to the lower end of the support plate located in the middle, the left and right ends of the support plate are provided with external positioning parts for squeezing and fixing the outer wall of the rectangular tube, and the rearmost support plate and the frontmost support plate are provided with internal positioning parts for contacting and fixing the inner wall of the rectangular tube.

[0011] As a preferred solution, the pressing part includes a shaft rod, and shaft rods are rotatably mounted at positions on the fixing plate that correspond to and are coaxial with the No. 1 spline shaft, and a pressure plate is fixedly mounted on the lower end of the shaft rod after passing through the fixing plate.

[0012] As a preferred embodiment, the driving part includes a No. 2 spline shaft, and two No. 2 spline shafts are rotatably installed on the base plate, which are symmetrical and located between the two groups of supporting components. A No. 2 spline sleeve is rotatably installed at a position corresponding to the No. 2 spline shaft on the fixed plate. The upper end of the No. 2 spline shaft slides through the corresponding No. 2 spline sleeve and then rotates through the inverted plate. The No. 2 spline sleeve and the corresponding shaft rod, the No. 2 spline shaft and the corresponding No. 1 spline sleeve, and the two No. 2 spline sleeves are all connected through a No. 2 pulley mechanism. The fixed plate and the inverted plate are jointly provided with a linkage part for driving the fixed plate and the No. 1 spline shaft to move relative to each other, and the inverted plate is provided with an actuator component for driving the No. 2 spline shaft to rotate.

[0013] As a preferred solution, the guiding part includes a rectangular plate. The upper end of the shaft rod penetrates through the fixing plate and is fixedly installed with a rectangular plate. A guiding groove identical to the weld track is opened at the lower end of the rectangular plate. Waist-shaped grooves corresponding to the sliders are opened on the fixing plate. The upper end of the slider is rotatably installed with a guide post, and the upper end of the guide post movably penetrates through the corresponding waist-shaped groove into the corresponding guiding groove.

[0014] As a preferred solution, the linkage member includes a spur gear. A spur gear is rotatably installed between the two vertical sections of the inverted U-shaped plate. On the opposite surfaces of the two vertical sections of the inverted U-shaped plate, racks meshing with the spur gear are slidably installed up and down, and the two racks are respectively located on the left and right sides of the spur gear. The upper end of the rack on the left side is fixedly connected to the lower end of the fixing plate. The lower end of the rack on the right side slidably penetrates through the bottom plate and is fixedly installed with a connecting plate. The lower end of the first spline shaft rotatably penetrates through the connecting plate.

[0015] As a preferred solution, the outer positioning member includes a notch. Notches are opened at the left and right ends of the support plate. A pressing plate is rotatably installed in the notch through a torsion spring rod, and the pressing plate is of a V-shaped structure.

[0016] As a preferred solution, the inner positioning member includes a groove. Two symmetrically arranged grooves are opened at the upper ends of the frontmost and rearmost support plates. A connecting rod is rotatably installed in the groove through a shaft column. A pressing roller in contact with the inner wall of the rectangular tube is rotatably installed at the upper end of the connecting rod on the side far from the shaft column. A turntable is fixedly installed on the shaft column above the connecting rod. A push-pull member for cooperating with the corresponding pressing plate to drive the turntable to rotate is arranged in the groove.

[0017] As a preferred solution, the push-pull member includes a push-pull plate. Push-pull plates are slidably installed left and right in the grooves. A U-shaped groove is opened on the turntable. A roller is rotatably installed at the upper end of the push-pull plate and slidably penetrates through the U-shaped groove. A compression spring is fixedly installed between the end of the push-pull plate far from the corresponding pressing plate and the inner wall of the groove. A ball in contact with the pressing plate is rotatably installed at the end of the push-pull plate far from the compression spring.

[0018] As a preferred solution, the execution component includes a stepping motor. A stepping motor with an output shaft fixedly connected to one of the second spline shafts is fixedly installed at the upper end of the inverted U-shaped plate.

[0019] One or more of the above technical solutions in the embodiments of the present invention have at least one of the following technical effects: First, the conveying mechanism of the present invention realizes the feeding and processing of the battery housing and the discharging of the welded battery housing, so as to reduce manual operation, ensure the continuity of the production and processing of the battery housing, and simultaneously weld two battery housings, improving the welding efficiency of the battery housing. The driven part drives the fixed battery housing to rotate, and the guiding part drives the welding component to adjust the position left and right to ensure the continuous progress of the welding process. The structure is simple, reducing the manufacturing and maintenance costs.

[0020] 2. The conveying mechanism provided in the present invention is connected to the external feeding mechanism through an external sprocket mechanism, so that the battery casing is conveyed to the corresponding positions of the two support plates in the same group, and then separated from the roller shaft through the fixing part and fixedly rotated for welding processing. After welding is completed, it contacts the roller shaft again through the fixing part, and the welded battery casing is conveyed to the external feeding mechanism on the rear side through the rotation of the roller shaft for subsequent processing, while the outer feeding mechanism conveys the battery casing to be processed to the welding equipment for further welding processing, thereby reducing manual operation, ensuring the continuity of battery casing production and processing, and further improving the efficiency of battery casing processing.

[0021] 3. The fixing part and the pressing part provided in the present invention limit the up and down movement of the battery casing by squeezing the support plate and the pressing plate, and limit the movement of the rectangular tube in four directions of left, right, front and back by the external positioning part and the internal positioning part, thereby ensuring the stability during the welding process. The driving part drives the fixed battery casing to rotate, and the guiding part drives the welding assembly to move left and right to adjust the position, ensuring that the welding assembly is always opposite to the weld, thereby ensuring the quality of the battery casing welding, and the mechanical structure is simple and easy to repair and maintain, reducing downtime and maintenance costs.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the battery shell during welding processing of the present invention.

[0025] Figure 2 It is a schematic structural diagram of the linkage member of the present invention.

[0026] Figure 3 for Figure 2 A magnified view of the structure in Figure 2.

[0027] Figure 4 This is a diagram showing the changes before and after the fixing part of the present invention fixes the battery housing.

[0028] Figure 5 It is a structural schematic diagram of the fixing part of the present invention when fixing the battery casing.

[0029] Figure 6 It is a schematic structural diagram of the guide part of the present invention.

[0030] Figure numerals: 10, equipment frame; 11, bottom plate; 2, conveying mechanism; 20, support plate; 21, roller; 22, No. 1 pulley mechanism; 23, connecting rod; 3, welding mechanism; 30, inverted plate; 31, telescopic cylinder; 32, fixed plate; 33, slider; 34, welding assembly; 4, fixing part; 40, support plate; 41, guide plate; 42, support column; 43, No. 1 spline sleeve; 44, No. 1 spline shaft; 45, external positioning member; 450, extrusion plate; 46, internal positioning member Positioning member; 460, connecting rod; 461, pressure roller; 462, turntable; 5, push-pull member; 50, push-pull plate; 51, roller; 52, compression spring; 6, driving unit; 60, No. 2 spline shaft; 61, No. 2 spline sleeve; 62, No. 2 pulley mechanism; 63, stepping motor; 64, linkage member; 640, spur gear; 641, rack; 642, connecting plate; 7, pressing unit; 70, shaft; 71, pressure plate; 8, guiding unit; 80, rectangular plate; 81, guiding groove; 82, guide column. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] like Figure 1 As shown, an automatic laser welding device for aluminum alloy automobile battery shell includes an equipment frame 10; a bottom plate 11 is fixedly installed on the equipment frame 10, and a conveying mechanism 2 and a welding mechanism 3 are arranged on the bottom plate 11.

[0033] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the conveying mechanism 2 includes a support assembly, and two groups of left-right symmetrical support assemblies are arranged on the upper end of the base plate 11, each group of support assemblies is composed of two left-right symmetrical support plates 20, and a plurality of rollers 21 are installed between the two support plates 20 in the same group so as to rotate evenly from front to back, and two adjacent rollers 21 are connected by a No. 1 pulley mechanism 22, and a connecting rod 23 is fixedly connected between the two rollers 21 that are opposite to each other in the two groups of support assemblies.

[0034] like Figure 1 , Figure 2 and Figure 6As shown, the welding mechanism 3 includes an inverted shaped plate 30, and the inverted shaped plate 30 is fixedly installed at the upper end of the base plate 11 and located between the two groups of support components. A telescopic cylinder 31 is fixedly installed at the upper end of the inverted shaped plate 30, and the telescopic section of the telescopic cylinder 31 slides through the inverted shaped plate 30 and then fixedly installed with a fixed plate 32, and a slider 33 corresponding to the support component is slidably installed at the lower end of the fixed plate 32, and a welding component 34 is fixedly installed at the lower end of the slider 33. The welding component 34 adopts the existing laser welding technology, and its specific structure and working principle are not described in detail here.

[0035] like Figure 1 and Figure 2 As shown, the positions on the bottom plate 11 corresponding to the supporting assemblies are all provided with fixing parts 4 for fixing the rectangular tube, the fixing plate 32 is provided with a pressing part 7 for pressing down the battery housing to drive the fixing part 4 to fix the rectangular tube, the pressing part 7 is provided with a guide part 8 for driving the welding assembly 34 to move left and right to maintain the welding processing of the weld, and the bottom plate 11 and the fixing plate 32 are jointly provided with a driving part 6 for driving the fixing part 4 and the pressing part 7 to move up and down and rotate.

[0036] During specific operation, feeding mechanisms are provided at the positions corresponding to the support components on the front and rear sides of the equipment frame 10, and one of the roller shafts 21 is connected to the feeding mechanism through a sprocket mechanism. Then, the two feeding mechanisms located on the front side of the equipment frame 10 move the rectangular tube with the bottom cover installed to the roller shaft 21 on the corresponding support component. At the same time, the feeding mechanism drives the corresponding roller shaft 21 to rotate through the sprocket mechanism, and the rollers of the same group rotate synchronously through the No. 1 pulley mechanism 22, and the other group of rollers rotate synchronously through the connecting rod 23. The rotation of the roller shaft 21 moves the rectangular tube with the bottom cover to the corresponding position of the two support plates 20 of the same group.

[0037] Then the driving part 6 drives the pressing part 7 and the fixing part 4 to move toward the battery shell to fix the battery shell, and then the driving part 6 drives the two fixed battery shells to rotate synchronously again, and the welding assembly 34 moves left and right to adjust its position under the guidance of the guide part 8 to ensure that the welding assembly 34 is always opposite to the weld.

[0038] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the fixing part 4 includes a supporting plate 40. A supporting plate 40 is arranged between every two adjacent roller shafts 21. Two symmetrically arranged feeding plates 41 are arranged between the two supporting plates 20 and above the roller shafts 21. At positions corresponding to the lower ends of the feeding plates 41 and the supporting plate 40 one by one, two supporting columns 42 are arranged. The lower ends of the supporting columns 42 are fixedly connected to the upper ends of the corresponding supporting plates 40. Two symmetrically arranged first spline sleeves 43 are rotatably installed at the upper end of the bottom plate 11. Both ends of the first spline sleeve 43 penetrate through the bottom plate 11. A first spline shaft 44 is coaxially and slidably installed on the first spline sleeve 43. The upper end of the first spline shaft 44 penetrates through the first spline sleeve 43 and is fixedly connected to the lower end of the middle supporting plate 40. Outer positioning members 45 for extruding and fixing the outer wall of the rectangular tube are arranged at both left and right ends of the supporting plate 40. Inner positioning members 46 for abutting and fixing the inner wall of the rectangular tube are arranged on the last supporting plate 40 and the frontmost supporting plate 40.

[0039] As Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the outer positioning member 45 includes a notch. Notches are formed at both left and right ends of the supporting plate 40. An extrusion plate 450 is rotatably installed in the notch through a torsion spring rod, and the extrusion plate 450 is in a V-shaped structure.

[0040] As Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the inner positioning member 46 includes a groove. Two symmetrically arranged grooves are formed at the upper ends of the frontmost and the last supporting plates 40. A connecting rod 460 is rotatably installed in the groove through a shaft column. A pressure roller 461 that abuts against the inner wall of the rectangular tube is rotatably installed at the upper end of the connecting rod 460 away from the shaft column. A turntable 462 is fixedly installed on the shaft column above the connecting rod 460. A push-pull member 5 for cooperating with the corresponding extrusion plate 450 to drive the turntable 462 to rotate is arranged in the groove.

[0041] As Figure 2 , Figure 3 and Figure 5 shown, the push-pull member 5 includes a push-pull plate 50. Push-pull plates 50 are slidably installed left and right in the grooves. A U-shaped groove is formed in the turntable 462. A roller 51 that is rotatably installed at the upper end of the push-pull plate 50 and slidably penetrates through the U-shaped groove. A compression spring 52 is fixedly installed between the end of the push-pull plate 50 away from the corresponding extrusion plate 450 and the inner wall of the groove. A ball that abuts against the extrusion plate 450 is rotatably installed at the end of the push-pull plate 50 away from the compression spring 52.

[0042] As Figure 1 and Figure 2As shown, the pressing part 7 includes a shaft rod 70. Shaft rods 70 are rotatably installed at positions on the fixing plate 32 that correspond one-to-one and coaxially with the first spline shaft 44. The lower end of the shaft rod 70 penetrates through the fixing plate 32 and is fixedly installed with a pressing plate 71.

[0043] During specific operation, the telescopic cylinder 31 pushes the fixing plate 32 to move downward. The fixing plate 32 then drives the first spline shaft 44 to move upward through the driving part 6. The first spline shaft 44 pushes the supporting plate 40, whose upper end face is lower than the upper cutting plane of the roller shaft 21 in the initial state, to move upward. The upward-moving supporting plate 40 drives the remaining supporting plates 40 in the same group to move upward synchronously through the support columns 42 and the guiding plate 41 to a position higher than the roller shaft 21, and pushes the rectangular tube upward to separate from the roller shaft 21 through the pressing plate 450. At the same time, the fixing plate 32 drives the pressing plate 71 to contact the bottom cover on the rectangular tube through the shaft rod 70 to push the rectangular tube to fit with the supporting plate 40. During the process of the rectangular tube fitting with the supporting plate 40, it will push one end of the corresponding pressing plate 450 to rotate downward. The other end of the pressing plate 450 contacts the outer wall of the rectangular tube to limit the left and right movement of the rectangular tube. The rotation of the pressing plate 450 will also push the push-pull plate 50 to move. The push-pull plate 50 drives the turntable 462 to rotate through the roller 51. The turntable 462 drives the pressing roller 461 to contact the front and rear inner walls of the rectangular tube through the shaft column and the connecting rod 460 to limit the front and rear movement of the rectangular tube. The up and down movement of the battery housing is restricted by the extrusion of the supporting plate 40 and the pressing plate 71. Then the driving part 6 drives the fixed battery housing to rotate, and at the same time, the welding mechanism 3 performs welding processing on the rotating battery housing.

[0044] After welding is completed, the telescopic cylinder 31 pulls the fixing plate 32 to move upward to drive the pressing part 7 and the welding assembly 34 away from the battery housing. The pressing plate 450 rotates under the action of the torsion spring rod to release the contact with the outer wall of the rectangular tube. The rotational reset of the pressing plate 450 will also release the contact with the push-pull plate 50. The push-pull plate 50 resets under the action of the compression spring 52 and drives the pressing roller 461 to rotate back to the groove for reset. Then the fixing plate 32 drives the supporting plate 40 to move downward through the driving part 6 to make the rectangular tube fit with the roller shaft 21 again. After that, the supporting plate 40 continues to move downward to a position lower than the upper horizontal cutting plane of the roller shaft 21 to achieve reset.

[0045] As Figure 1 and Figure 2As shown, the driving part 6 includes a second spline shaft 60. Two second spline shafts 60 that are symmetric left and right and located between two sets of support components are rotatably installed on the bottom plate 11. Second spline sleeves 61 are rotatably installed at positions corresponding to the second spline shafts 60 on the fixed plate 32. The upper end of the second spline shaft 60 slidably penetrates through the corresponding second spline sleeve 61 and then rotatably penetrates through the inverted U-shaped plate 30. A second belt pulley mechanism 62 is used for driving connection between the second spline sleeve 61 and the corresponding shaft rod 70, between the second spline shaft 60 and the corresponding first spline sleeve 43, and between the two second spline sleeves 61. A linkage 64 for driving the relative movement of the fixed plate 32 and the first spline shaft 44 is jointly arranged on the fixed plate 32 and the inverted U-shaped plate 30. An execution component for driving the rotation of the second spline shaft 60 is arranged on the inverted U-shaped plate 30. The execution component includes a stepping motor 63. The stepping motor 63 with an output shaft fixedly connected to one of the second spline shafts 60 is fixedly installed at the upper end of the inverted U-shaped plate 30.

[0046] As Figure 2 and Figure 6 shown, the linkage 64 includes a spur gear 640. The spur gear 640 is rotatably installed between two vertical sections of the inverted U-shaped plate 30. Rack bars 641 that are engaged with the spur gear 640 are slidably installed up and down on the opposite surfaces of the two vertical sections of the inverted U-shaped plate 30. And the two rack bars 641 are respectively located on the left and right sides of the spur gear 640. The upper end of the rack bar 641 on the left side is fixedly connected to the lower end of the fixed plate 32. The lower end of the rack bar 641 on the right side slidably penetrates through the bottom plate 11 and then is fixedly installed with a connecting plate 642. The lower end of the first spline shaft 44 rotatably penetrates through the connecting plate 642.

[0047] As Figure 1 , Figure 2 and Figure 6 shown, the guiding part 8 includes a rectangular plate 80. The upper end of the shaft rod 70 penetrates through the fixed plate 32 and then is fixedly installed with the rectangular plate 80. A guiding groove 81 identical to the weld track is formed at the lower end of the rectangular plate 80. Waist-shaped grooves corresponding to the sliders 33 are formed on the fixed plate 32. Guide posts 82 are rotatably installed at the upper ends of the sliders 33. The upper ends of the guide posts 82 movably penetrate through the corresponding waist-shaped grooves into the corresponding guiding grooves 81.

[0048] During specific operation, the telescopic cylinder 31 pushes the fixed plate 32 downward. The fixed plate 32 drives the spur gear 640 to rotate through the corresponding rack 641. The spur gear 640 drives the other rack 641 to move upward. The upward-moving rack 641 pushes the first spline shaft 44 upward through the connecting plate 642, and fixes the battery housing through the cooperation of the fixing part 4 and the pressing part 7. Then, the stepping motor 63 drives the corresponding second spline shaft 60 to rotate. The second spline shaft 60 drives the other second spline shaft 60 to rotate through the second pulley mechanism 62. The two second spline shafts 60 drive the corresponding shaft rod 70 and the first spline shaft 44 to rotate synchronously through the corresponding second pulley mechanism 62, so as to drive the fixed battery housing to rotate.

[0049] The rotation of the shaft rod 70 will also drive the rectangular plate 80 to rotate. The rectangular plate 80 drives the welding assembly 34 to move left and right to adjust the position through the guiding groove 81, the guide post 82 and the slider 33, so that the welding assembly 34 is always opposite to the weld seam, in order to complete the welding process of the battery housing.

[0050] After welding is completed, the telescopic cylinder 31 pulls the fixed plate 32 upward. The fixed plate 32 drives the supporting plate 40 to move downward through the fixing part 4, so that the fixing part 4 is lower than the upper horizontal section of the roller shaft 21. Then, the feeding mechanism continues to operate and drives the roller shaft 21 to continue rotating through the sprocket mechanism, so as to move the welded battery housing to the feeding mechanism at the rear side of the equipment frame 10. The feeding mechanism at the front side continues to move the battery housing to be processed to the roller shaft 21 for welding, so as to reduce manual operation, ensure the continuity of processing, and improve the efficiency of welding the battery housing.

[0051] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0052] In addition, the terms "first", "second", "first one", "second one" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "first one", "second one" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0053] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and defined, the terms "arranged", "connected", "installed", 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0054] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An automatic laser welding device for aluminum alloy automobile battery housing, comprising a device frame; characterized in that: A bottom plate is fixedly installed on the equipment frame, and a conveying mechanism and a welding mechanism are arranged on the bottom plate; wherein: The conveying mechanism includes two groups of left-right symmetrical support assemblies arranged at the upper end of the bottom plate, each group of support assemblies is composed of two left-right symmetrical support plates, a plurality of rollers are installed between the two support plates in the same group so as to rotate evenly from front to back, two adjacent rollers are connected by a No. 1 pulley mechanism, and a connecting rod is fixedly connected between two rollers that are directly opposite to each other in the two groups of support assemblies; The welding mechanism includes an inverted plate fixedly installed at the upper end of the bottom plate and located between the two groups of support assemblies, a telescopic cylinder is fixedly installed at the upper end of the inverted plate, a fixed plate is fixedly installed after the telescopic section of the telescopic cylinder slides through the inverted plate, a slider corresponding to the support assembly is slidably installed at the lower end of the fixed plate, and a welding assembly is fixedly installed at the lower end of the slider; The bottom plate is provided with a fixing part for fixing the rectangular tube at positions corresponding to the supporting components one by one, the fixing plate is provided with a pressing part for pressing down the battery housing to drive the fixing part, the pressing part is provided with a guide part for driving the welding component to maintain the welding process of the weld, and the bottom plate and the fixing plate are jointly provided with a driving part for driving the fixing part and the pressing part to move up and down and rotate; The fixing part includes a support plate arranged between two adjacent rollers, and both left and right ends of the support plate are provided with external positioning members for pressing and fixing the outer wall of the rectangular tube, and the rearmost support plate and the frontmost support plate are provided with internal positioning members for contacting and fixing the inner wall of the rectangular tube; The outer positioning member includes a notch, and the left and right ends of the support plate are both provided with a notch, and an extrusion plate is rotatably installed in the notch through a torsion spring rod, and the extrusion plate is in a V-shaped structure; The inner positioning member includes a groove, and the upper ends of the support plates at the front and rear sides are provided with two left-right symmetrical grooves, a connecting rod is rotatably installed in the groove through a shaft column, a pressing roller that contacts the inner wall of the rectangular tube is rotatably installed on the upper end of the connecting rod away from the shaft column, a rotating disk located above the connecting rod is fixedly installed on the shaft column, and a push-pull member for cooperating with the corresponding extrusion plate to drive the rotating disk to rotate is arranged in the groove; The push-pull member includes a push-pull plate, and the push-pull plate is slidably installed in the groove left and right. A U-shaped groove is opened on the turntable. A roller that slides through the U-shaped groove is rotatably installed on the upper end of the push-pull plate. A compression spring is fixedly installed between the end of the push-pull plate away from the corresponding extrusion plate and the inner wall of the groove, and a ball that contacts the extrusion plate is rollingly installed on the end of the push-pull plate away from the compression spring.

2. The automatic laser welding equipment for aluminum alloy automobile battery shell according to claim 1 is characterized in that: Two left-right symmetrical material guide plates are arranged between the two support plates and above the roller shaft. Two pillars are arranged at the positions where the lower ends of the material guide plates correspond to the support plates. The lower ends of the pillars are fixedly connected to the upper ends of the corresponding support plates. Two left-right symmetrical No. 1 spline sleeves are rotatably installed on the upper end of the base plate. Both ends of the No. 1 spline sleeve pass through the base plate. A No. 1 spline shaft is coaxially slidably installed on the No. 1 spline sleeve. The upper end of the No. 1 spline shaft passes through the No. 1 spline sleeve and is fixedly connected to the lower end of the support plate located in the middle.

3. The automatic laser welding equipment for aluminum alloy automobile battery shell according to claim 2 is characterized in that: The pressing part comprises a shaft rod, and the shaft rods are rotatably mounted at positions on the fixing plate that correspond to and are coaxial with the No. 1 spline shaft, and a pressing plate is fixedly mounted on the lower end of the shaft rod after passing through the fixing plate.

4. The automatic laser welding equipment for aluminum alloy automobile battery shell according to claim 3 is characterized in that: The driving part includes a No. 2 spline shaft, and two No. 2 spline shafts are symmetrically installed on the bottom plate and located between the two groups of supporting components. A No. 2 spline sleeve is rotatably installed at a position corresponding to the No. 2 spline shaft on the fixed plate. The upper end of the No. 2 spline shaft slides through the corresponding No. 2 spline sleeve and then rotates to penetrate the inverted plate. The No. 2 spline sleeve and the corresponding shaft rod, the No. 2 spline shaft and the corresponding No. 1 spline sleeve, and the two No. 2 spline sleeves are all connected through a No. 2 pulley mechanism. The fixed plate and the inverted plate are jointly provided with a linkage part for driving the fixed plate and the No. 1 spline shaft to move relative to each other, and the inverted plate is provided with an actuator assembly for driving the No. 2 spline shaft to rotate.

5. The automatic laser welding equipment for aluminum alloy automobile battery shell according to claim 3 is characterized in that: The guide part includes a rectangular plate, and the upper end of the shaft rod passes through the fixed plate and is fixedly installed with the rectangular plate. The lower end of the rectangular plate is provided with a guide groove identical to the weld trajectory, and the fixed plate is provided with a waist groove corresponding to the slider one by one. The upper end of the slider is rotatably installed with a guide column, and the upper end of the guide column movably passes through the corresponding waist groove to the corresponding guide groove.

6. The automatic laser welding equipment for aluminum alloy automobile battery housing according to claim 4 is characterized in that: The linkage part includes a spur gear, and a spur gear is rotatably installed between the two vertical sections of the inverted shaped plate. The opposite surfaces of the two vertical sections of the inverted shaped plate are slidably installed with racks meshing with the spur gears, and the two racks are respectively located on the left and right sides of the spur gear. The upper end of the rack on the left is fixedly connected to the lower end of the fixed plate, and the lower end of the rack on the right slides through the bottom plate and is fixedly installed with a connecting plate, and the lower end of the No. 1 spline shaft rotates through the connecting plate.

7. The automatic laser welding equipment for aluminum alloy automobile battery housing according to claim 4 is characterized in that: The actuator assembly comprises a stepper motor, and the upper end of the inverted shaped plate is fixedly mounted with a stepper motor whose output shaft is fixedly connected to one of the second spline shafts.

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