A laser welding machine and welding method for welding a sheet metal shell

Abstract

This invention relates to the field of sheet metal welding technology, and proposes a laser welding machine and welding method for welding sheet metal shells. The laser welding machine for welding sheet metal shells includes a feeding and heat dissipation device, a protective plate, a lifting and conveying mechanism, a support and limiting mechanism, and a flattening and heat dissipation mechanism. The protective plate has multiple through holes at equal intervals, and a conveying roller is vertically slidably disposed in the through holes. The lifting and conveying mechanism is used to drive the sheet metal part to move and rise between two protective plates. The support and limiting mechanism is disposed between the two protective plates and is used to support and fix the sheet metal part. The flattening and heat dissipation mechanism is disposed on both sides of the lifting and conveying mechanism and is used to flatten and dissipate heat after the sheet metal part is welded. This technical solution addresses the problem in the prior art where improper heat dissipation after laser welding of sheet metal parts easily affects the welding quality.

Description

Technical Field

[0001] This invention relates to an intelligent welding system, and more specifically to the field of sheet metal welding technology, specifically to a laser welding machine and welding method for welding sheet metal shells. Background Technology

[0002] Laser welding machines for sheet metal use fiber lasers to convert electrical energy into light energy. The resulting high-energy laser beam is used to weld the gaps in the sheet metal. During welding, the part of the sheet metal irradiated by the laser rises in a very short time, and the metal in the irradiated area melts locally. The overlapping edges of the two sheet metal pieces mix together, and after cooling, they solidify and join together, completing the welding.

[0003] Because laser heating is fast and the temperature is high during welding, the rapid connection of two sheet metal parts can cause stress between them due to the rapid melting, connection, and cooling of the weld area. This can lead to bending of the two sheet metal parts. Currently, heat dissipation is mostly achieved through water-cooled fixtures or natural air cooling, but slow heat dissipation will affect the welding quality of the sheet metal parts. Summary of the Invention

[0004] This invention proposes a laser welding machine and welding method for welding sheet metal shells, which solves the problem in the prior art that improper heat dissipation after laser welding of sheet metal parts can easily affect the welding quality of sheet metal parts.

[0005] The technical solution of the present invention is as follows:

[0006] A laser welding machine for sheet metal shell welding includes a worktable, a loading base, and a welding device. The worktable is disposed to the side of the loading base, and the welding device is disposed on the loading base. The loading base is used for conveying and loading sheet metal parts. It also includes a loading heat dissipation device, protective plates, a lifting and conveying mechanism, a support and limiting mechanism, and a flattening heat dissipation mechanism. Multiple loading heat dissipation devices are provided, all disposed on the loading base. The welding device is disposed between two adjacent loading heat dissipation devices. Two protective plates are provided, both fixedly connected to the loading base. The protective plates have evenly spaced openings. Multiple through holes are provided. A lifting and conveying mechanism is installed on the loading base. The lifting and conveying mechanism is equipped with multiple conveying rollers, which are vertically slidably installed in the through holes. The lifting and conveying mechanism is used to drive the sheet metal parts to move and rise between the two protective plates. A support and limiting mechanism is installed on the loading base between the two protective plates. The support and limiting mechanism is used to support and fix the sheet metal parts. A flattening and heat dissipation mechanism is installed on the loading base on both sides of the lifting and conveying mechanism. The flattening and heat dissipation mechanism is used to flatten and dissipate heat after the sheet metal parts are welded.

[0007] The lifting and conveying mechanism further includes a drive cylinder, a motor, and a rotating seat. Multiple drive cylinders are provided, each fixedly installed on one side of the two protective plates away from the support and limiting mechanism. Two rotating seats are provided, each fixedly connected to the output end of one of the multiple drive cylinders of the two support and limiting mechanisms. The two ends of multiple conveying rollers are rotatably connected to the two rotating seats. A transmission belt is fitted onto one end of each of two adjacent conveying rollers located on one of the rotating seats. The multiple conveying rollers rotate in the same direction. The motor is fixedly installed on the rotating seat, and its output end is connected to one of the conveying rollers.

[0008] The support and limiting mechanism includes a fixed base, a fixed support member, a sliding support member, and a second drive cylinder. Multiple fixed bases are provided and fixedly connected to the feeding base. The fixed bases are positioned between the two protective plates and are staggered with the conveying rollers. Multiple fixed support members are provided and fixedly connected to the fixed bases. Multiple sliding support members are provided and slidably connected to the fixed bases. Multiple second drive cylinders are provided and fixedly installed on the feeding base. Each sliding support member is fixedly connected to the output end of one of the second drive cylinders. The multiple sliding support members and multiple fixed support members are staggered. The output end of the second drive cylinder can drive the sliding support member to slide vertically. The sliding support member has the same structure as the fixed support member, and the end of the sliding support member and the fixed support member away from the feeding base is rectangular with a through-hole shape.

[0009] The flattening and heat dissipation mechanism includes a frame, an extension arm assembly, reinforcing ribs, a third drive cylinder, and a pressing assembly. The frame is fixedly mounted on the loading base, and the welding device is fixedly mounted on the frame. The extension arm assembly is disposed on the frame, and a pressing plate is slidably disposed on the extension arm assembly. The extension arm assembly is used to drive the pressing plate to move above the sheet metal part. The reinforcing rib is fixedly connected to the pressing plate. The third drive cylinder is disposed on the frame, and the output end of the third drive cylinder is rotatably connected to the pressing plate. Multiple pressing assemblies are disposed on the side of the rotating seat away from the protective plate, and the pressing assemblies are used to press the pressing plate downward.

[0010] The extended support arm assembly includes C-shaped slide rails, extension plates, slide rods, and springs. Multiple C-shaped slide rails are provided and fixedly connected to the frame, with the openings of the C-shaped slide rails facing downwards. Multiple extension plates are provided, with one extension plate slidably connected to each C-shaped slide rail. Multiple slide rods are provided and fixedly connected to the pressure plate, passing through the extension plates. The pressure plate is slidably mounted on the extension plates via the slide rods. Springs are sleeved on the slide rods and are located on the side of the extension plate away from the pressure plate.

[0011] The pressing component near the C-shaped slide rail is located on the side of the pressing plate, and the pressing component away from the C-shaped slide rail is located in the middle of the pressing plate. The pressing component includes a base, a drive cylinder, a side rail, and a pressing frame. The base is fixedly connected to the feeding base, the drive cylinder is fixedly installed on the base, and a pressing frame is fixedly connected to the output end of the drive cylinder. The pressing frame can contact the reinforcing rib, the side rail is fixedly connected to the base, and the pressing frame is slidably connected to the side rail.

[0012] The flattening and heat dissipation mechanism also includes a slide groove and a slider. The slide groove is fixedly connected to the frame; the slider is slidably connected in the slide groove, and the drive cylinder is three-turn connected to the slider.

[0013] A laser welding method for welding sheet metal housings, using the aforementioned laser welding machine for welding sheet metal housings, includes the following steps:

[0014] Step 1: Sheet metal parts loading: The sheet metal parts are placed on the conveyor rollers, and the output of the motor drives the conveyor rollers to rotate and transport the sheet metal parts.

[0015] Step 2, Sheet metal part positioning: The output end of the second drive cylinder extends to push the sliding support upward. After the sheet metal part contacts the sliding support, it stops moving. The output end of the motor stops rotating. The output end of the second drive cylinder shortens, making the fixed support and the sliding support flush.

[0016] Step 3: Placing the sheet metal parts: After welding is completed, the output end of the drive cylinder shortens and pulls the rotating frame and the conveying roller downward, so that the sheet metal parts are placed on the fixed support and the sliding support.

[0017] Step 4: Press plate extension: The output end of drive cylinder 3 extends to push the press plate and extension rod to slide on the C-shaped slide rail toward the sheet metal part. The press plate stops moving when it moves above the sheet metal part.

[0018] Step 5, Press Down: The output ends of multiple drive cylinders shorten and pull the pressing frame downward to press the reinforcing rib;

[0019] Step 6, Press Plate Movement: The slide bar slides up the extension rod, the spring is compressed and shortened, the press plate clamps the sheet metal part with the fixed support and the sliding support, and the slider slides towards the press plate in the groove;

[0020] Step 7, Flattening Completed: After the welding area has cooled down, the output end of drive cylinder four extends to separate the pressing frame from the reinforcing rib, and the output end of drive cylinder three shortens, pulling the extension rod to slide towards the C-shaped slide rail.

[0021] The working principle and beneficial effects of this invention are as follows:

[0022] 1. In this invention, by setting two feeding and heat dissipation devices and placing the welding device in the middle, the sheet metal parts on the other feeding and heat dissipation device can be welded while the sheet metal parts on one feeding and heat dissipation device are being cooled after welding, which improves welding efficiency and equipment utilization.

[0023] 2. In this invention, by setting a support limiting mechanism, the sheet metal parts can be supported and heat dissipation can be accelerated without affecting the transportation of the sheet metal parts. By setting a flattening heat dissipation mechanism, the sheet metal parts can be flattened as a whole, eliminating any possible bending. At the same time, heat is diffused through large-area contact, avoiding excessive cooling. Also, the sheet metal parts are made flat by pressing over a large area. Compared with existing laser welding machines, this application can solve the problems of bending and heat dissipation of sheet metal parts in one go. Attached Figure Description

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1 This is a physical illustration of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0028] Figure 4 This is a partial cross-sectional view of the internal structure of the rotating seat in this invention;

[0029] Figure 5 This is a partial cross-sectional view of the protective plate in this invention;

[0030] Figure 6 This is a partial cross-sectional view of the structure in which the lifting and conveying mechanism and the flattening and heat dissipation mechanism cooperate in this invention;

[0031] Figure 7 This is a partial cross-sectional view of the heat dissipation mechanism in this invention;

[0032] Figure 8 This is a partial cross-sectional view of the structure in which the drive cylinder and the frame cooperate in this invention;

[0033] Figure 9 This is a partial cross-sectional view of the internal structure of the pressing component and the pressing plate in this invention.

[0034] In the diagram: 1. Workbench; 2. Feeding base; 3. Welding device; 4. Protective plate; 5. Through hole; 6. Conveyor roller; 7. Drive cylinder one; 8. Rotating seat; 9. Motor; 10. Fixed seat; 11. Fixed support; 12. Sliding support; 13. Drive cylinder two; 14. Frame; 15. Press plate; 16. Reinforcing rib; 17. Drive cylinder three; 18. C-shaped slide rail; 19. Extension plate; 20. Slide rod; 21. Spring; 22. Seat; 23. Drive cylinder four; 24. Pressing frame; 25. Side rail; 26. Slide groove; 27. Slider. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] like Figures 2 to 9 As shown, this embodiment of the intelligent welding system proposes a laser welding machine for sheet metal shell welding, including a worktable 1, a loading base 2, and a welding device 3. The worktable 1 is located on the side of the loading base 2, and the welding device 3 is located on the loading base 2. The loading base 2 is used for conveying and loading sheet metal parts, and also includes a loading heat dissipation device, a protective plate 4, a lifting conveying mechanism, a support limiting mechanism, and a flattening heat dissipation mechanism. Multiple loading heat dissipation devices are provided, all of which are located on the loading base 2. The welding device 3 is located between two adjacent loading heat dissipation devices. Two protective plates 4 are provided, both of which are fixedly connected to the loading base 2. Multiple through holes 5 are equally spaced on the protective plates 4. The lifting conveying mechanism is located on the loading base 2, and multiple conveying rollers 6 are provided in the lifting conveying mechanism. The conveying rollers 6 are vertically slidably located in the through holes. In section 5, the lifting and conveying mechanism is used to move and lift the sheet metal parts between the two protective plates 4. The support and limiting mechanism is set on the loading base 2 and between the two protective plates 4. The support and limiting mechanism is used to support and fix the sheet metal parts. The flattening and heat dissipation mechanism is set on the loading base 2 and on both sides of the lifting and conveying mechanism. The flattening and heat dissipation mechanism is used to flatten and dissipate heat after the sheet metal parts are welded. After the sheet metal parts are welded, the support and limiting mechanism supports the sheet metal parts from below, and the flattening and heat dissipation mechanism presses them from above. On the one hand, it flattens the parts and prevents warping. On the other hand, it allows for large-area contact on both sides, enabling rapid heat dissipation. The heat dissipation is conducted through metal contact, which is more uniform than water cooling and will not damage the welding points due to excessive heat dissipation.

[0038] like Figures 2 to 4As shown, the lifting and conveying mechanism also includes a drive cylinder 7, a motor 9, and a rotating seat 8. Multiple drive cylinders 7 are provided, each fixedly installed on one side of the two protective plates 4 away from the supporting and limiting mechanism. Two rotating seats 8 are provided, each fixedly connected to the output end of one of the multiple drive cylinders 7 supporting the two limiting mechanisms. The two ends of multiple conveying rollers 6 are rotatably connected to the two rotating seats 8. A transmission belt is fitted onto one end of each of the two adjacent conveying rollers 6. The multiple conveying rollers 6 rotate in the same direction. The motor 9 is fixedly installed on the rotating seat 8, and its output end is connected to one of the conveying rollers 6. The rotation of the conveying rollers 6 drives the sheet metal parts to move, while the drive cylinder 7 drives the lifting and lowering of the conveying rollers 6. This prevents the sheet metal parts from being supported by the conveying rollers 6 during pressing, avoiding prolonged support that could cause the conveying rollers 6 to bend. In this embodiment, the transmission belt fitted onto adjacent conveying rollers 6 can be a chain or other transmission method, or multiple motors 9 can be linked together.

[0039] like Figures 4 to 5 As shown, the support and limiting mechanism includes a fixed base 10, fixed support members 11, sliding support members 12, and a second drive cylinder 13. Multiple fixed bases 10 are provided and fixedly connected to the feeding base 2. The fixed bases 10 are positioned between two protective plates 4 and are staggered with the conveying rollers 6. Multiple fixed support members 11 are provided and fixedly connected to the fixed bases 10. Multiple sliding support members 12 are provided and slidably connected to the fixed bases 10. Multiple second drive cylinders 13 are provided and fixedly installed on the feeding base 2. Each sliding support member 12 is fixedly connected to the output end of one second drive cylinder 13. The multiple sliding support members 12 and multiple fixed support members 11 are staggered. The output end of the second moving cylinder 13 can drive the sliding support 12 to slide vertically. The sliding support 12 has the same structure as the fixed support 11. The end of the sliding support 12 and the fixed support 11 away from the loading base 2 is set as a rectangular through shape. In this embodiment, three sliding supports 12 are provided. They extend out to block the sheet metal part according to the position where the sheet metal part needs to stop. The rectangular part on the fixed support 11 and the sliding support 12 can provide stable support for the sheet metal part. At the same time, the hollow design makes it easier to dissipate heat and dissipate heat from the welding parts. The output end of the first driving cylinder 7 drives the sheet metal part to rise and fall and contact and separate from the fixed support 11 and the sliding support 12 to provide support when flattened.

[0040] like Figures 6 to 9As shown, the flattening heat dissipation mechanism includes a frame 14, an extension arm assembly, a reinforcing rib 16, a drive cylinder 17, and a pressing assembly. The frame 14 is fixedly mounted on the loading base 2, and the welding device 3 is fixedly mounted on the frame 14. The extension arm assembly is mounted on the frame 14, and a pressing plate 15 is slidably mounted on the extension arm assembly. The extension arm assembly is used to drive the pressing plate 15 to move above the sheet metal part. The reinforcing rib 16 is fixedly connected to the pressing plate 15. The drive cylinder 17 is mounted on the frame 14, and the output end of the drive cylinder 17 is connected to the pressing plate. The 15-rotation connection has multiple pressing components, which are respectively located on the side of the rotating seat 8 away from the protective plate 4. The pressing components are used to press the pressing plate 15 downward. When flattening and heat dissipation are required after welding, the extension arm extends the pressing plate 15 above the sheet metal part, and then the pressing components press the pressing plate 15. The reinforcing rib 16 is set as a mesh to enhance the overall rigidity of the pressing plate. The pressing components press multiple positions on the reinforcing rib 16, so that the entire pressing plate 15 is evenly stressed and presses the sheet metal part as a whole.

[0041] like Figures 2 to 5 As shown, the extension arm assembly includes C-shaped slide rails 18, extension plates 19, slide rods 20, and springs 21. Multiple C-shaped slide rails 18 are provided and are fixedly connected to the frame 14, with the openings of the C-shaped slide rails 18 facing downwards. Multiple extension plates 19 are provided, with one extension plate 19 slidably connected to each C-shaped slide rail 18. Multiple slide rods 20 are provided and are fixedly connected to the pressure plate 15, passing through the extension plates 19. The pressure plate 15 is slidably mounted on the extension plates 19 via the slide rods 20. Springs 21... The slide rod 20 is fitted onto the spring 21, which is located on the side of the extension plate 19 away from the pressure plate 15. When the pressing assembly presses the reinforcing rib 16, the slide rod 20 slides on the extension plate 19. Before pressing, the spring 21 keeps the pressure plate 15 above the protective plate 4. After pressing, the spring 21 is compressed and shortened. After pressing, the spring 21 extends and pushes the slide rod 20, causing the pressure plate 15 to slide upward. When the extension plate 19 slides on the C-shaped slide rail 18, the slide rod 20 moves in the C-shaped slide rail 18 without contacting it.

[0042] like Figures 7 to 9As shown, the pressing component near the C-shaped slide rail 18 is located on the side of the pressing plate 15, and the pressing component away from the C-shaped slide rail 18 is located in the middle of the pressing plate 15. The pressing component includes a base 22, a drive cylinder 23, a side rail 25, and a pressing frame 24. The base 22 is fixedly connected to the feeding base 2. The drive cylinder 23 is fixedly installed on the base 22. The pressing frame 24 is fixedly connected to the output end of the drive cylinder 23. The pressing frame 24 can contact the reinforcing rib 16. The side rail 25 is fixedly connected to the base 22. The pressing frame 24 is slidably connected to the side rail 25. The output end of the drive cylinder 23 pulls the pressing frame 24 downward to press the reinforcing rib 16. The pressing frame 24 is L-shaped to prevent the pressing frame 24 from contacting the protective plate 4. The sliding of the pressing frame 24 on the side rail 25 can prevent the output end of the drive cylinder 23 from being subjected to lateral force.

[0043] like Figure 9 As shown, the flattening heat dissipation mechanism also includes a slide groove 26 and a slider 27. The slide groove 26 is fixedly connected to the frame 14; the slider 27 is slidably connected in the slide groove 26, and the drive cylinder 17 is rotatably connected to the slider 27. When the output end of the drive cylinder 17 extends to push the pressure plate 15 to slide, the slider 27 slides in the slide groove 26 to the end away from the sheet metal part. Before pressing, the output end of the drive cylinder 17 stops extending. When the pressing frame 24 presses the pressure plate 15 down, it drives the drive cylinder 17 to move and pulls the slider 27 to slide towards the sheet metal part in the slide groove 26. After the cooling is finished, the output end of the drive cylinder 17 shortens and pulls the pressure plate 15 to slide towards the C-shaped slide rail 18. At this time, the slider 27 is in the slide groove 26 at the end close to the sheet metal part.

[0044] In this embodiment, the sheet metal parts are transported by rotating rollers. The output end of the second drive cylinder 13 pushes the sliding support 12 for limiting. After welding, the output end of the first drive cylinder 7 shortens and pulls the conveying roller 6 downward. The sheet metal parts are supported by the fixed support 11 and the sliding support 12. At the same time, the rectangular hollow structure accelerates heat dissipation. The output end of the third drive cylinder 17 pushes the pressing plate 15 to move above the sheet metal parts. The output end of the fourth drive cylinder 23 drives the pressing frame 24 to move the pressing plate 15 downward, flattening the sheet metal parts and accelerating the heat transfer at the welding parts. This allows for uniform heat dissipation while straightening the sheet metal parts. Through metal conduction, the heat dissipation speed is prevented from being too fast or too slow.

[0045] Example 2

[0046] A laser welding method for welding sheet metal housings, using the aforementioned laser welding machine for welding sheet metal housings, includes the following steps:

[0047] Step 1: Sheet metal parts loading: The sheet metal parts are placed on the conveyor roller 6, and the output end of the motor 9 drives the conveyor roller 6 to rotate and transport the sheet metal parts;

[0048] Step 2, Sheet metal part positioning: The output end of the second drive cylinder 13 extends to push the sliding support 12 to slide upward. After the sheet metal part contacts the sliding support 12, it stops moving. The output end of the motor 9 stops rotating. The output end of the second drive cylinder 13 shortens, so that the fixed support 11 is flush with the sliding support 12.

[0049] Step 3: Place the sheet metal parts: After welding is completed, the output end of the drive cylinder 7 shortens and pulls the rotating frame and the conveying roller 6 downward, so that the sheet metal parts are placed on the fixed support 11 and the sliding support 12.

[0050] Step 4: Press plate 15 extends: The output end of drive cylinder 3 17 extends to push the press plate 15 and extension rod to slide on the C-shaped slide rail 18 toward the sheet metal part. The press plate 15 stops moving when it moves above the sheet metal part.

[0051] Step 5, Press Down: The output ends of multiple drive cylinders 23 shorten and pull the pressing frame 24 downward to press the reinforcing rib 16;

[0052] Step 6, moving the pressure plate 15: the slide bar 20 slides on the extension rod, the spring 21 is compressed and shortened, the pressure plate 15, the fixed support 11 and the sliding support 12 clamp the sheet metal part, and the slider 27 slides towards the pressure plate 15 in the slide groove 26.

[0053] Step 7, Flattening Completed: After the welding part has cooled down, the output end of the fourth drive cylinder 23 extends, causing the pressing frame 24 to separate from the reinforcing rib 16, and the output end of the third drive cylinder 17 shortens, pulling the extension rod to slide towards the C-shaped slide rail 18.

[0054] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser welding machine for welding sheet metal housings, comprising a worktable (1), a loading base (2), and a welding device (3), wherein the worktable (1) is disposed on the side of the loading base (2), and the welding device (3) is disposed on the loading base (2), the loading base (2) being used for conveying and loading sheet metal parts, characterized in that, Also includes: Multiple feeding and heat dissipation devices are provided, and all of the multiple feeding and heat dissipation devices are provided on the feeding base (2). The welding device (3) is provided between two adjacent feeding and heat dissipation devices. There are two protective plates (4), both of which are fixedly connected to the feeding base (2). Multiple through holes (5) are opened at equal intervals on the protective plates (4). The lifting conveying mechanism is set on the loading base (2). The lifting conveying mechanism is provided with multiple conveying rollers (6). The conveying rollers (6) are vertically slidably set in the through hole (5). The lifting conveying mechanism is used to drive the sheet metal parts to move and lift between the two protective plates (4). A support limiting mechanism is provided on the loading base (2). The support limiting mechanism is located between the two protective plates (4). The support limiting mechanism is used to support and fix the sheet metal parts. A flattening and heat dissipation mechanism is provided on the loading base (2). The flattening and heat dissipation mechanism is provided on both sides of the lifting and conveying mechanism. The flattening and heat dissipation mechanism is used to flatten and dissipate heat after the sheet metal parts are welded. The lifting and conveying mechanism also includes: Multiple drive cylinders (7) are provided, and the multiple drive cylinders (7) are respectively fixedly installed on the side of the two protective plates (4) away from the support limiting mechanism; There are two rotating seats (8), and each of the multiple drive cylinders (7) of the two supporting limiting mechanisms is fixedly connected to a rotating seat (8). The two ends of the multiple conveying rollers (6) are respectively rotatably connected to the two rotating seats (8). The two adjacent conveying rollers (6) are fitted with a transmission belt on one end of the rotating seat (8), and the multiple conveying rollers (6) rotate in the same direction. The motor (9) is fixedly mounted on the rotating seat (8), and the output end of the motor (9) is connected to one of the conveying rollers (6) in a transmission connection. The supporting limiting mechanism includes: Multiple fixed seats (10) are provided and fixedly connected to the feeding base (2). The fixed seats (10) are arranged between the two protective plates (4). The fixed seats (10) and the conveying rollers (6) are arranged alternately. Multiple fixed support members (11) are provided, and the fixed support members (11) are fixedly connected to the fixed base (10); Multiple sliding support members (12) are provided, and the sliding support members (12) are slidably connected to the fixed base (10); Multiple drive cylinders (13) are provided. The drive cylinders (13) are fixedly installed on the feeding base (2). Each sliding support (12) is fixedly connected to the output end of one drive cylinder (13).

2. The laser welding machine for sheet metal housing welding according to claim 1, characterized in that, Multiple sliding support members (12) and multiple fixed support members (11) are arranged alternately, and the output end of the second drive cylinder (13) can drive the sliding support members (12) to slide in the vertical direction.

3. The laser welding machine for sheet metal housing welding according to claim 2, characterized in that, The sliding support (12) has the same structure as the fixed support (11), and the end of the sliding support (12) and the fixed support (11) away from the feeding base (2) is set as a rectangular through shape.

4. The laser welding machine for sheet metal housing welding according to claim 3, characterized in that, The flattening and heat dissipation mechanism includes: The frame (14) is fixedly installed on the loading base (2), and the welding device (3) is fixedly installed on the frame (14); An extension arm assembly is provided on the frame (14), and a pressure plate (15) is slidably provided on the extension arm assembly. The extension arm assembly is used to drive the pressure plate (15) to move above the sheet metal part. Reinforcing rib (16), which is fixedly connected to the pressure plate (15): Drive cylinder three (17) is mounted on the frame (14), and the output end of drive cylinder three (17) is rotatably connected to the pressure plate (15); Multiple pressing components are provided, and the multiple pressing components are respectively located on the side of the rotating seat (8) away from the protective plate (4). The pressing components are used to press the pressing plate (15) downward.

5. A laser welding machine for welding sheet metal housings according to claim 4, characterized in that, The extension arm assembly includes: Multiple C-shaped slide rails (18) are provided. The C-shaped slide rails (18) are fixedly connected to the frame (14), and the opening of the C-shaped slide rails (18) faces downward. Multiple extension plates (19) are provided, and each of the C-shaped slide rails (18) is slidably connected to one of the extension plates (19). Multiple slide rods (20) are provided. The slide rods (20) are fixedly connected to the pressure plate (15). The slide rods (20) pass through the extension plate (19). The pressure plate (15) is slidably disposed on the extension plate (19) through the slide rods (20). A spring (21) is sleeved on the slide bar (20) and the spring (21) is located on the side of the extension plate (19) away from the pressure plate (15).

6. A laser welding machine for welding sheet metal housings according to claim 5, characterized in that, The pressing assembly near the C-shaped slide rail (18) is disposed on the side of the pressing plate (15), and the pressing assembly away from the C-shaped slide rail (18) is disposed in the middle of the pressing plate (15). The pressing assembly includes: The base (22) is fixedly connected to the feeding base (2); A drive cylinder four (23) is fixedly installed on the base (22). A pressing frame (24) is fixedly connected to the output end of the drive cylinder four (23). The pressing frame (24) can contact the reinforcing rib (16). The side rail (25) is fixedly connected to the seat (22), and the pressing frame (24) is slidably connected to the side rail (25).

7. A laser welding machine for welding sheet metal housings according to claim 4, characterized in that, The flattening and heat dissipation mechanism further includes: The slide (26) is fixedly connected to the frame (14); The slider (27) is slidably connected in the groove (26), and the drive cylinder (17) is rotatably connected to the slider (27).

8. A laser welding method for welding sheet metal housings, using the laser welding machine for welding sheet metal housings as described in claim 7, characterized in that, Includes the following steps: S1, Sheet metal parts loading: Sheet metal parts are placed on conveyor rollers (6), and the output end of motor (9) drives conveyor rollers (6) to rotate and convey sheet metal parts; S2, Sheet metal part positioning: The output end of the second drive cylinder (13) extends to push the sliding support (12) to slide upward. After the sheet metal part contacts the sliding support (12), it stops moving. The output end of the motor (9) stops rotating. The output end of the second drive cylinder (13) shortens, so that the fixed support (11) and the sliding support (12) are flush. S3. Place the sheet metal parts: After welding is completed, the output end of the drive cylinder (7) shortens and pulls the rotating frame and the conveying roller (6) downward, so that the sheet metal parts are placed on the fixed support (11) and the sliding support (12). S4, Press plate (15) extends: The output end of the drive cylinder three (17) extends to push the press plate (15) and the extension rod to slide on the C-shaped slide rail (18) towards the sheet metal part. When the press plate (15) moves above the sheet metal part, it stops moving. S5, Pressing Down: The output ends of multiple drive cylinders (23) shorten and pull the pressing frame (24) downward to press the reinforcing rib (16); S6, Press plate (15) moves: The slide bar (20) slides on the extension rod below, the spring (21) is compressed and shortened, the press plate (15) clamps the sheet metal part with the fixed support (11) and the sliding support (12), and the slider (27) slides towards the press plate (15) in the slide groove (26); S7, Flattening complete: After the welding part has cooled down, the output end of the fourth drive cylinder (23) extends, causing the pressing frame (24) to separate from the reinforcing rib (16), and the output end of the third drive cylinder (17) shortens, pulling the extension rod to slide towards the C-shaped slide rail (18).

Images