Full-automatic argon arc welding device for automobile lightweight aluminum alloy structure

Abstract

The application discloses a kind of full-automatic argon arc welding devices of automobile light weight aluminum alloy structure, it is related to argon arc welding equipment field, including: device base and horizontal sliding table, the top of horizontal sliding table is equipped with vertical sliding table, the outer side of vertical sliding table is equipped with argon arc welding head, the top of device base is fixedly installed with two mounting seats, the inner side of mounting seat is equipped with electric claw disc, and the outer side of mounting seat is provided with elastic air bag;It further includes: sealing mechanism, sealing mechanism is installed on the top of device base, and sealing mechanism includes two moving plates;The application can make two moving plates respectively push two elastic air bags to move by sealing mechanism, two elastic air bags are respectively pushed into the inner side of two aluminum alloy pipes, the inner side of aluminum alloy pipe is blocked by inflating elastic air bag and making elastic air bag swell, realize the sealing of aluminum alloy pipe, and the position of elastic air bag can be adjusted according to the size of aluminum alloy pipe, so as to facilitate argon arc welding to more sizes of aluminum alloy pipe.

Description

Technical Field

[0001] This invention relates to the field of argon arc welding equipment, specifically a fully automatic argon arc welding device for lightweight aluminum alloy structures in automobiles. Background Technology

[0002] Lightweight aluminum alloy structures for automobiles are an advanced vehicle manufacturing technology that replaces traditional steel materials with aluminum alloys to reduce weight in core structural components such as the body, chassis, and powertrain, while ensuring overall vehicle safety, structural rigidity, and service durability. The production of these structural components requires the use of argon arc welding technology and equipment to weld the aluminum alloy components into shape, thereby meeting the requirements for mass production and structural strength.

[0003] Argon arc welding (ATW) is based on conventional electric arc welding. It utilizes argon gas to create a protective gas layer around the weld area, and relies on a high current to melt the base material and welding consumables to form a molten pool, ultimately achieving a metallurgical bond. In ATW welding of tubular aluminum alloy components, the argon gas output from the welding torch only protects the outer weld area of ​​the pipe and cannot diffuse into the interior. Under the high-temperature welding environment, the inner wall of the aluminum alloy pipe is prone to oxidation with oxygen in the air, leading to quality defects such as oxide inclusions and decreased weld performance. Currently, the mainstream solution in the industry is to place two airbags inside the pipe. After inflation, the airbags expand and adhere to the pipe wall, sealing the space on both sides of the weld joint to isolate it from air and prevent oxidation of the inner wall. However, this process has significant drawbacks: when the pipe length is large, the difficulty of inserting and placing the airbags increases significantly; also, after the airbags are placed inside the pipe, the distance between them is difficult to control, often resulting in an excessively small gap. Summary of the Invention

[0004] The purpose of this invention is to provide a fully automated argon arc welding device for lightweight aluminum alloy structures in automobiles, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A fully automated argon arc welding device for lightweight aluminum alloy structures in automobiles includes: a device base and a horizontal slide table mounted on the top of the device base; a vertical slide table is mounted on the top of the horizontal slide table; an argon arc welding head is mounted on the outer side of the vertical slide table; two symmetrically distributed mounting seats are fixedly mounted on the top of the device base; an electric gripper disc is mounted on the inner side of each mounting seat; and an elastic airbag is provided on the outer side of each mounting seat; the device base also includes: a sealing mechanism for sealing the inner sides of two aluminum alloy tubes; the sealing mechanism is mounted on the top of the device base and includes two parts respectively located on the two mounting seats. A movable plate on the outer side of the seat, capable of pushing the elastic airbag into the aluminum alloy tube; a flat support mechanism for adjusting the sealing position of the two elastic airbags, the flat support mechanism being installed on the outer side of the movable plate, the flat support mechanism including a baffle plate disposed on the outer side of the movable plate, the baffle plate being capable of adjusting the sealing position of the two elastic airbags; a distance control mechanism for preventing the two elastic airbags from being too close, the distance control mechanism being installed on the inner side of the elastic airbag, the distance control mechanism including a stop bar disposed on the inner side of the elastic airbag, the stop bar ensuring the minimum distance between the two elastic airbags.

[0006] Preferably, the sealing mechanism further includes two support plates symmetrically fixedly installed on the top of the device base, a mounting frame fixedly installed between the two support plates, two symmetrically distributed mounting blocks fixedly installed on the inner side of the mounting frame, two movable plates located on the inner side of the mounting frame, and screws threadedly fitted to both ends of each movable plate, with the screws rotatably mounted between the mounting frame and the adjacent mounting blocks. An optical shaft for limiting the sliding of the movable plates is fixedly installed on the inner side of the mounting frame, and a synchronous belt is rotatably mounted between two adjacent screws. The mounting frame has an inner cavity for mounting the timing belt. Both sides of the mounting frame are fixedly mounted with drive motors, and the output end of the drive motor is fixedly connected to one end of the adjacent screw. The outer side of the moving plate is rotatably mounted with a mounting rod. Two symmetrically distributed mounting discs are fixedly mounted on the outer side of the mounting rod. Two elastic airbags are respectively fixedly mounted on the outer side of the two mounting rods, and the two ends of the elastic airbags are in contact with the two mounting discs respectively. An air injection pipe penetrating the adjacent mounting discs is fixedly mounted on the outer side of the elastic airbag.

[0007] Preferably, the flat support mechanism further includes a fixed plate fixedly installed on the outside of the mounting rod, two baffles respectively sleeved on the outside of the mounting rod, a plurality of centrally symmetrically distributed support rods fixedly installed on the side of the fixed plate near the baffles, a first sleeve fixedly installed between the plurality of support rods, a second sleeve fixedly installed on the side of the baffle near the fixed plate, the second sleeve sleeved on the outside of the mounting rod, and the first sleeve sleeved on the outside of the second sleeve, a first tension spring fixedly installed between the end of the first sleeve away from the fixed plate and the baffles, a plurality of centrally symmetrically distributed positioning strips fixedly installed on the inner side of the baffles, and a positioning groove for limiting the sliding of the positioning strips is opened on the outer side of the mounting rod.

[0008] Preferably, the distance control mechanism further includes a mounting cavity formed inside the mounting rod, a mounting plate slidably mounted inside the mounting cavity, two symmetrically distributed gears rotatably mounted inside the mounting cavity, and first racks respectively meshing with the two gears fixedly mounted at the top and bottom of the mounting plate, two second racks respectively meshing with the two gears fixedly mounted inside the second sleeve, and an elongated groove for limiting the sliding of the second racks formed on the outer side of the mounting rod, a sleeve block fixedly mounted at one end of the mounting plate, the stop rod being a hollow structure and sleeved on the outer side of the sleeve block, a spring fixedly mounted between the inner side of the stop rod and the outer side of the sleeve block, and a contact piece fixedly mounted at the end of the sleeve away from the mounting plate.

[0009] Preferably, rubber ribs are fixedly installed at both ends of the elastic airbag, and an annular groove is provided on the side of the mounting plate near the elastic airbag for the rubber ribs to be inserted and positioned.

[0010] Preferably, an exhaust pipe is fixedly installed at the end of the elastic airbag away from the movable plate, and an insertion cavity for the exhaust pipe to be inserted is opened on the outer side of the mounting plate near the exhaust pipe. The end of the insertion cavity away from the exhaust pipe has a frustum structure and a sealing block is inserted for the limiting. A second tension spring is fixedly installed between the outer side of the sealing block and the inner side of the insertion cavity.

[0011] Preferably, a slide cylinder is fixedly installed on the side of the sealing block near the second tension spring. The slide cylinder is slidably installed on the inner side of the insertion cavity, and multiple exhaust holes are provided on the outer side of the slide cylinder in a centrally symmetrical distribution.

[0012] Preferably, an annular pad is fixedly installed on the side of the baffle near the second sleeve, and the annular pad is made of rubber.

[0013] Preferably, multiple pulleys are rotatably mounted on both sides of the mounting plate in an equidistant manner, and a guide groove is provided on the inner side of the mounting cavity for limiting the sliding of the pulleys.

[0014] Preferably, a sliding rod is fixedly installed on the inner side of the sleeve, and the outer side of the sleeve block and the mounting plate are provided with insertion holes for the sliding rod to be inserted into the sleeve.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention, through a sealing mechanism, enables two movable plates to push two elastic airbags to move. The two elastic airbags are pushed into the inside of two aluminum alloy tubes, inflating them and causing them to expand and block the inside of the aluminum alloy tubes, thus sealing the aluminum alloy tubes and preventing oxidation during welding. The position of the elastic airbags can also be adjusted according to the size of the aluminum alloy tubes, thereby facilitating argon arc welding of aluminum alloy tubes of various sizes.

[0016] This invention, through a flat support mechanism, enables the baffle to rest against the outside of the aluminum alloy tube when sealing a long aluminum alloy tube. This allows the baffle to provide auxiliary support for the mounting rod via the second sleeve, keeping the elastic airbag in a horizontal position. This ensures that the elastic airbag can stably rest against the inside of the aluminum alloy tube, and the two elastic airbags can be positioned at any position on the two aluminum alloy tubes, thus facilitating the processing of two aluminum alloy tubes of different sizes.

[0017] This invention, through a distance control mechanism, enables the sleeve to be moved out of the mounting cavity of the mounting rod when sealing a longer aluminum alloy tube, and when another mounting rod is inserted into a shorter aluminum alloy tube, the contact plates on the two sleeves come into contact, which facilitates the indication of the distance between the two elastic airbags, prevents the two elastic airbags from getting too close, and thus improves the safety of the elastic airbag sealing the aluminum alloy tube. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the mounting frame and mounting block structure in this invention; Figure 3 This is a partial cross-sectional view of the movable plate and mounting rod in this invention. Figure 4 This is a partial cross-sectional view of the elastic airbag and mounting plate in this invention. Figure 5 for Figure 4 Enlarged structural diagram of area A in the middle; Figure 6 This is a partial cross-sectional view of the baffle and the second sleeve in this invention; Figure 7This is a schematic diagram of a partial cross-sectional structure of the stop bar and contact plate in this invention; Figure 8 This is a partial cross-sectional structural diagram of the mounting plate and pulley in this invention.

[0019] In the diagram: 1. Device base; 2. Horizontal slide table; 3. Vertical slide table; 4. Argon arc welding head; 5. Electric claw plate; 6. Elastic airbag; 7. Moving plate; 8. Baffle plate; 9. Baffle rod; 10. Support plate; 11. Mounting frame; 12. Mounting block; 13. Screw; 14. Synchronous belt; 15. Drive motor; 16. Mounting rod; 17. Mounting plate; 18. Air injection pipe; 19. Fixed plate; 20. Support rod; 21. First sleeve; 22. Second sleeve; 23. First tension spring; 24. Positioning strip; 25. Mounting plate; 26. Gear; 27. First rack; 28. Second rack; 29. ​​Sleeve block; 30. Pulley; 31. Spring; 32. Contact piece; 33. Rubber rib; 34. Exhaust pipe; 35. Sealing block; 36. Second tension spring; 37. Slide rod; 38. Slide cylinder; 39. Annular pad. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1-8 The diagram shows a fully automated argon arc welding device for lightweight aluminum alloy structures in automobiles. It includes a base 1 and a horizontal slide 2 mounted on top of the base 1. A vertical slide 3 is mounted on top of the horizontal slide 2, and an argon arc welding head 4 is mounted on the outer side of the vertical slide 3. Two symmetrically distributed mounting seats are fixedly mounted on the top of the base 1. Electric claw plates 5 are mounted inside the mounting seats. Two aluminum alloy tubes are inserted into the inner sides of the two electric claw plates 5, with the welding ends of the two aluminum alloy tubes contacting each other, causing the two electric claw plates to... Two gripper discs 5 clamp two aluminum alloy tubes respectively. A vertical slide 3 moves the argon arc welding head 4 close to the welding points of the two aluminum alloy tubes. Two electric gripper discs 5 rotate the aluminum alloy tubes, allowing the argon arc welding head 4 to weld the outer side of the tubes. An elastic airbag 6 is installed on the outer side of the mounting base. The inner layer of the airbag 6 is flame-retardant polyurethane, and the outer layer is a high-temperature resistant heat-insulating cloth conforming to glass limiting. It can withstand 300℃ radiant heat for a short time and continuously withstand temperatures of 180-220℃, suitable for the high-current TIG welding heat radiation conditions of thick aluminum alloy tubes. The two elastic airbags 6 then block the two aluminum alloy tubes respectively. The sealing mechanism includes two movable plates 7 located on the outer sides of two mounting bases, which can push the elastic airbag 6 into the aluminum alloy tube. The sealing mechanism also includes two support plates 10 symmetrically fixedly installed on the top of the device base 1. A mounting frame 11 is fixedly installed between the two support plates 10. Two symmetrically distributed mounting blocks 12 are fixedly installed on the inner side of the mounting frame 11. Both movable plates 7 are located inside the mounting frame 11. Screws 13 are threaded onto both ends of the movable plates 7, and the screws 13 are rotatably installed between the mounting frame 11 and the adjacent mounting block 12. An optical shaft for limiting the sliding of the movable plates 7 is fixedly installed on the inner side of the mounting frame 11. A synchronous belt 14 is rotatably installed between the two adjacent screws 13, and the inner side of the mounting frame 11 has an opening for the synchronous belt 14. The cavity to be installed has drive motors 15 fixedly installed on both sides of the mounting frame 11. The output end of the drive motor 15 is fixedly connected to one end of the adjacent screw 13. When the drive motor 15 is running, it can drive the corresponding screw 13 to rotate. The screw 13 drives another corresponding screw 13 to rotate synchronously through the synchronous belt 14. The two screws 13 drive the moving plate 7 to move along the outer side of the optical axis. The two drive motors 15 are independently controlled. The outer side of the moving plate 7 is rotatably mounted with mounting rods 16. Two symmetrically distributed mounting discs 17 are fixedly mounted on the outer side of the mounting rods 16. Two elastic airbags 6 are fixedly mounted on the outer side of the two mounting rods 16, and the two ends of the elastic airbags 6 are in contact with the two mounting discs 17 respectively. When the moving plate 7 moves, it can push the mounting plate 7 to rotate. The mounting rod 16 inserts the elastic airbag 6 into the inner side of the aluminum alloy tube. An injection pipe 18, penetrating the adjacent mounting plate 17, is fixedly installed on the outer side of the elastic airbag 6. Gas is injected into the elastic airbag 6 through the injection pipe 18, causing the elastic airbag 6 to inflate and press against the inner side of the aluminum alloy tube, thus sealing the inner sides of the two aluminum alloy tubes and preventing oxidation during welding. This facilitates welding of aluminum alloy tubes of various sizes and improves the convenience of welding. Rubber reinforcing strips 33 are fixedly installed at both ends of the elastic airbag 6, and the mounting plate 17 has an annular groove on the side near the elastic airbag 6 for the rubber reinforcing strips 33 to be inserted and positioned. During a collision, the rubber reinforcing strips 33 provide tension to the ends of the elastic airbag 6, preventing... To prevent the elastic airbag 6 from detaching from the mounting plate 17, an exhaust pipe 34 is fixedly installed at the end of the elastic airbag 6 away from the moving plate 7. An insertion cavity for the exhaust pipe 34 is provided on the outer side of the mounting plate 17 near the exhaust pipe 34. The end of the insertion cavity away from the exhaust pipe 34 has a frustum structure and a sealing block 35 is inserted therefore. A second tension spring 36 is fixedly installed between the outer side of the sealing block 35 and the inner side of the insertion cavity. Argon gas can be injected into the elastic airbag 6 through the injection pipe 18. When the pressure inside the elastic airbag 6 is too high, the argon gas inside the elastic airbag 6 can push open the sealing block 35 and stretch the second tension spring 36, causing the sealing block 35 to open the insertion cavity. Argon gas can then enter the space formed between the two elastic airbags 6 and the two aluminum alloy tubes, providing protection for the inner side of the aluminum alloy tubes.To prevent oxidation, a slide cylinder 38 is fixedly installed on the side of the sealing block 35 near the second tension spring 36. The slide cylinder 38 is slidably installed inside the insertion cavity, and multiple centrally symmetrically distributed vent holes are opened on the outer side of the slide cylinder 38. The slide cylinder 38 provides support and guidance for the movement of the sealing block 35, and argon gas can be discharged through the vent holes.

[0022] Example 2: Please refer to Figures 2-6 This embodiment further illustrates Example 1. The flat support mechanism shown in the figure includes a baffle 8 disposed on the outside of the movable plate 7. The baffle 8 can adjust the sealing position of the two elastic airbags 6. The flat support mechanism also includes a fixed plate 19 fixedly installed on the outside of the mounting rod 16. The two baffles 8 are respectively sleeved on the outside of the mounting rod 16. A plurality of centrally symmetrically distributed support rods 20 are fixedly installed on the side of the fixed plate 19 near the baffle 8. A first sleeve 21 is fixedly installed between the plurality of support rods 20. The baffle 8 is close to the fixed plate. A second sleeve 22 is fixedly installed on one side of the mounting rod 16. The second sleeve 22 is sleeved on the outside of the mounting rod 16, and the first sleeve 21 is sleeved on the outside of the second sleeve 22. A first tension spring 23 is fixedly installed between the end of the first sleeve 21 away from the fixed plate 19 and the baffle 8. When the mounting rod 16 moves, it can drive the baffle 8 to contact the end of the aluminum alloy tube. As the mounting rod 16 moves, the mounting rod 16 pulls the support rod 20 through the fixed plate 19. The support rod 20 stretches the first tension spring 23 through the first sleeve 21, so that... The baffle 8 rests against the end of the aluminum alloy tube, while the mounting rod 16 extends into the inside of the aluminum alloy tube. The baffle 8, in conjunction with the second sleeve 22, provides auxiliary support for the mounting rod 16, allowing it to smoothly deliver the elastic airbag 6 into the longer aluminum alloy tube and preventing the mounting rod 16 from tilting. The two elastic airbags 6 can be inflated in any position, facilitating the sealing of two aluminum alloy tubes of different lengths. Multiple centrally symmetrically distributed positioning strips 24 are fixedly installed on the inner side of the baffle 8. The outer side of the rod 16 is provided with a positioning groove for the positioning strip 24 to slide in a limited manner. When the aluminum alloy tube rotates, the aluminum alloy tube drives the mounting rod 16 to rotate through the elastic airbag 6. The mounting rod 16 drives the baffle 8 to rotate synchronously through the positioning strip 24, so as to prevent the aluminum alloy tube from causing wear to the elastic airbag 6 and the baffle 8. An annular pad 39 is fixedly installed on the side of the baffle 8 near the second sleeve 22. The annular pad 39 is made of rubber. The baffle 8 can press against the outer side of the aluminum alloy tube through the annular pad 39 to provide protection for the aluminum alloy tube.

[0023] Example 3: Please refer to Figures 2-8This embodiment further illustrates other embodiments. The distance control mechanism shown in the figure includes a stop bar 9 disposed inside the elastic airbag 6. The stop bar 9 ensures the minimum distance between the two elastic airbags 6. The distance control mechanism also includes a mounting cavity opened inside the mounting rod 16. A mounting plate 25 is slidably mounted inside the mounting cavity. Two symmetrically distributed gears 26 are rotatably mounted inside the mounting cavity. The top and bottom of the mounting plate 25 are fixedly mounted with first racks 27 that mesh with the two gears 26 respectively. The inner side of the second sleeve 22 is fixedly mounted with two first racks 27 that mesh with the two gears 26 respectively. The second rack 28 has a long groove on the outer side of the mounting rod 16 for limiting the sliding of the second rack 28. When the baffle 8 contacts the end of the aluminum alloy tube, the movement of the mounting rod 16 can drive the gear 26 to roll along the teeth of the first rack 27. The gear 26 can then drive the mounting plate 25 to move along the mounting cavity of the mounting rod 16 through the second rack 28. A sleeve block 29 is fixedly installed at one end of the mounting plate 25. The stop rod 9 is a hollow structure and is sleeved on the outer side of the sleeve block 29. A spring 31 is fixedly installed between the inner side of the stop rod 9 and the outer side of the sleeve block 29. The stop rod 9 is away from the mounting plate 27. A contact piece 32 is fixedly installed at one end of the plate 25. When any one of the baffles 8 contacts a longer aluminum alloy tube, the mounting plate 25 can push the baffle 9 out of the mounting cavity of the mounting rod 16 through the sleeve block 29. When the other mounting rod 16 is inserted into a shorter aluminum alloy tube, the contact piece 32 on the mounting rod 16 can contact the other contact piece 32, thus alerting the operator and preventing the two elastic airbags 6 from being too close together when sealing two aluminum alloy tubes of different lengths. This improves the safety of the elastic airbags 6 sealing the aluminum alloy tube. 31 can provide a buffer for the movement of the stop bar 9. Multiple pulleys 30 are rotatably mounted on both sides of the mounting plate 25 and are distributed at equal intervals. The inner side of the mounting cavity is provided with a guide groove for the pulleys 30 to slide in a limited manner. The mounting plate 25 can drive the pulleys 30 to move along the inner side of the guide groove, so that the pulleys 30 provide auxiliary support for the mounting plate 25. A sliding rod 37 is fixedly installed on the inner side of the stop bar 9. The sleeve block 29 and the outer side of the mounting plate 25 are provided with a socket for the sliding rod 37 to be inserted in a limited manner. When the stop bar 9 moves, it can drive the sliding rod 37 to move along the inner side of the socket, so that the sliding rod 37 provides auxiliary support for the stop bar 9.

[0024] Working principle: First, the operator inserts two aluminum alloy tubes to be processed into two electric gripper discs 5, respectively, so that the contact ends of the two aluminum alloy tubes come into contact. The electric gripper discs 5 clamp and fix the aluminum alloy tubes. Then, the two drive motors 15 run synchronously, driving the corresponding screw 13 to rotate. This screw 13 drives the other corresponding screw 13 to rotate synchronously via a timing belt 14. This causes the two screws 13 to drive the moving plate 7 to move along the outer side of the optical axis. The moving plate 7 pushes the mounting rod 16 to move, so that the mounting rod 16, in conjunction with the two mounting discs 17, inserts the elastic airbag 6 into the inner side of the corresponding aluminum alloy tube. Subsequently, the operator injects argon gas into the elastic airbag 6 through the gas injection pipe 18, causing the elastic airbag to... The elastic airbag 6 inflates and presses against the inside of the aluminum alloy tube, sealing the inside of the two aluminum alloy tubes. As the air pressure inside the elastic airbag 6 increases, the argon gas inside the elastic airbag 6 pushes open the sealing block 35 and stretches the second tension spring 36, causing the sealing block 35 to open the cavity on the mounting plate 17. Argon gas enters the space formed between the two elastic airbags 6 and the two aluminum alloy tubes, providing protection for the inside of the aluminum alloy tubes. Finally, the vertical slide 3 drives the argon arc welding head 4 to move downward, bringing the argon arc welding head 4 close to the welding end of the two aluminum alloy plates. The two electric claw plates 5 drive the two aluminum alloy tubes to rotate, realizing the argon arc welding process of the aluminum alloy tubes, thus facilitating the processing of aluminum alloy tubes of more sizes. When welding two aluminum alloy tubes of different lengths, one of the mounting rods 16 is inserted into the longer aluminum alloy tube. The mounting rod 16 drives the baffle 8 to contact the end of the longer aluminum alloy tube. At this time, the mounting rod 16 continues to move, causing the mounting rod 16 to pull the support rod 20 through the fixed plate 19. The support rod 20 stretches the first tension spring 23 through the first sleeve 21, causing the baffle 8 to abut against the end of the aluminum alloy tube. The baffle 8 provides auxiliary support for the mounting rod 16 through the second sleeve 22, allowing the mounting rod 16 to smoothly send the elastic airbag 6 into the longer aluminum alloy tube. Furthermore, the mounting rod 16 drives the gear 26 to roll along the first rack 27 on the inner side of the second sleeve 22, causing the gear... Wheel 26 drives mounting plate 25 to move along the mounting cavity of mounting rod 16 via second rack 28. Mounting plate 25 pushes sleeve block 29 to move, so that sleeve block 29 pushes stop 9 out of mounting cavity of mounting rod 16 via spring 31. Then, another mounting rod 16 is inserted into the shorter aluminum alloy tube, so that the contact piece 32 at the end of stop 9 on the mounting rod 16 contacts the contact piece 32 at the end of stop 9 on the other mounting rod 16. This serves as a reminder to the operator and prevents the two elastic airbags 6 from getting too close when sealing two aluminum alloy tubes of different lengths, thereby improving the safety of the sealing of aluminum alloy tube by the elastic airbags 6.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fully automated argon arc welding device for lightweight aluminum alloy structures in automobiles, characterized in that, include: The device base (1) and the horizontal slide (2) are provided. A vertical slide (3) is installed on the top of the horizontal slide (2). An argon arc welding head (4) is installed on the outside of the vertical slide (3). Two symmetrically distributed mounting seats are fixedly installed on the top of the device base (1). An electric claw disk (5) is installed on the inner side of the mounting seat. An elastic airbag (6) is provided on the outer side of the mounting seat. Also includes: A sealing mechanism is used to seal the inner sides of two aluminum alloy tubes. The sealing mechanism is installed on the top of the device base (1). The sealing mechanism includes two movable plates (7) located on the outside of the two mounting seats respectively. The movable plates (7) can push the elastic airbag (6) into the aluminum alloy tube. A flat support mechanism is used to adjust the sealing position of the two elastic airbags (6). The flat support mechanism is installed on the outside of the moving plate (7). The flat support mechanism includes a baffle (8) disposed on the outside of the moving plate (7). The baffle (8) can adjust the sealing position of the two elastic airbags (6). A distance control mechanism is used to prevent the two elastic airbags (6) from being too close together. The distance control mechanism is installed on the inner side of the elastic airbag (6). The distance control mechanism includes a stop bar (9) disposed on the inner side of the elastic airbag (6). The stop bar (9) ensures the minimum distance between the two elastic airbags (6).

2. The fully automatic argon arc welding device for lightweight aluminum alloy structures in automobiles according to claim 1, characterized in that: The sealing mechanism also includes two support plates (10) mounted on the top of the device base (1). A mounting frame (11) is installed between the two support plates (10). Two mounting blocks (12) are fixedly installed on the inner side of the mounting frame (11). Both movable plates (7) are located inside the mounting frame (11). Both ends of the movable plates (7) are threaded with screws (13), and the screws (13) are rotatably installed between the mounting frame (11) and the adjacent mounting blocks (12). An optical shaft for limiting the sliding of the movable plates (7) is fixedly installed on the inner side of the mounting frame (11). A synchronous belt (1) is rotatably installed between the two adjacent screws (13). 4), and the inner side of the mounting frame (11) is provided with a cavity for mounting the synchronous belt (14). Both sides of the mounting frame (11) are equipped with drive motors (15), and the output end of the drive motor (15) is fixedly connected to one end of the adjacent screw (13). The outer side of the moving plate (7) is rotatably mounted with a mounting rod (16). Two mounting discs (17) are mounted on the outer side of the mounting rod (16). Two elastic airbags (6) are fixedly mounted on the outer side of the two mounting rods (16), and the two ends of the elastic airbags (6) are in contact with the two mounting discs (17). An air injection tube (18) is installed on the outer side of the elastic airbags (6).

3. The fully automatic argon arc welding device for lightweight aluminum alloy structures in automobiles according to claim 2, characterized in that: The flat support mechanism also includes a fixed plate (19) installed on the outside of the mounting rod (16), two baffles (8) respectively sleeved on the outside of the mounting rod (16), a plurality of support rods (20) are installed on one side of the fixed plate (19), a first sleeve (21) is installed between the plurality of support rods (20), a second sleeve (22) is installed on one side of the baffle (8), the second sleeve (22) is sleeved on the outside of the mounting rod (16), and the first sleeve (21) is sleeved on the outside of the second sleeve (22), a first tension spring (23) is fixedly installed between the end of the first sleeve (21) away from the fixed plate (19) and the baffle (8), a plurality of positioning strips (24) are installed on the inner side of the baffle (8), and a positioning groove for the positioning strips (24) to be limited and slid on the outside of the mounting rod (16).

4. The fully automatic argon arc welding device for lightweight aluminum alloy structures in automobiles according to claim 3, characterized in that: The distance control mechanism also includes a mounting cavity opened inside the mounting rod (16). A mounting plate (25) is slidably mounted inside the mounting cavity. Two gears (26) are rotatably mounted inside the mounting cavity. The top and bottom of the mounting plate (25) are each equipped with a first rack (27) that meshes with the two gears (26). The inner side of the second sleeve (22) is equipped with two second racks (28) that mesh with the two gears (26). The outer side of the mounting rod (16) is provided with a long groove for the second rack (28) to be limited and slid. A sleeve block (29) is installed at one end of the mounting plate (25). The stop rod (9) is a hollow structure and is sleeved on the outer side of the sleeve block (29). A spring (31) is installed between the inner side of the stop rod (9) and the outer side of the sleeve block (29). A contact piece (32) is installed at one end of the stop rod (9).

5. The fully automatic argon arc welding device for lightweight aluminum alloy structures in automobiles according to claim 2, characterized in that: Both ends of the elastic airbag (6) are equipped with rubber ribs (33), and one side of the mounting plate (17) is provided with an annular groove for the rubber ribs (33) to be inserted and positioned.

6. The fully automatic argon arc welding device for lightweight aluminum alloy structures in automobiles according to claim 2, characterized in that: An exhaust pipe (34) is installed at one end of the elastic airbag (6). An insertion cavity for the exhaust pipe (34) is provided on the outer side of the mounting plate (17) near the exhaust pipe (34). The end of the insertion cavity away from the exhaust pipe (34) is truncated cone structure and a sealing block (35) is inserted for limiting. A second tension spring (36) is installed between the outer side of the sealing block (35) and the inner side of the insertion cavity.

7. The fully automatic argon arc welding device for lightweight aluminum alloy structures in automobiles according to claim 6, characterized in that: A slide cylinder (38) is installed on one side of the sealing block (35). The slide cylinder (38) is slidably installed on the inner side of the insertion cavity, and multiple exhaust holes are opened on the outer side of the slide cylinder (38).

8. The fully automatic argon arc welding device for lightweight aluminum alloy structures in automobiles according to claim 3, characterized in that: An annular pad (39) is installed on one side of the baffle (8), and the annular pad (39) is made of rubber.

9. The fully automatic argon arc welding device for lightweight aluminum alloy structures in automobiles according to claim 4, characterized in that: Multiple pulleys (30) are rotatably mounted on both sides of the mounting plate (25), and a guide groove is provided on the inner side of the mounting cavity for the pulleys (30) to slide in a limited manner.

10. The fully automatic argon arc welding device for lightweight aluminum alloy structures in automobiles according to claim 4, characterized in that: A slide rod (37) is installed on the inner side of the stop bar (9), and the sleeve block (29) and the outer side of the mounting plate (25) are provided with a socket for the slide rod (37) to be inserted into the limit position.

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