Plasma welding device for automobile bearing component

Abstract

The invention discloses a plasma welding device for an automobile bearing component, and relates to the field of welding equipment. The multiple clamping mechanisms are installed on the rotary disc, when a workpiece clamped on one clamping mechanism is welded through the plasma welding gun assembly, a new to-be-welded workpiece can be synchronously clamped on other clamping mechanisms, and after a round of workpiece welding is completed, the rotary disc can be driven to rotate through the rotary driving assembly, so that the workpiece to be welded is welded through the plasma welding gun assembly. The rotating disc can drive the multiple clamping mechanisms to sequentially and alternately move to one side of the plasma welding gun assembly, so that the plasma welding gun assembly can continuously conduct welding work, and the welding efficiency of the plasma welding equipment can be improved. When the jig plate moves towards the plasma welding gun assembly, the transmission unit can drive the longitudinal lead screw to rotate, so that the longitudinal lead screw and the transverse lead screw drive the longitudinal clamping plate and the transverse clamping plate to move close to each other, a workpiece on the jig plate is clamped and fixed, and clamping and positioning of the workpiece are more convenient.

Description

Technical Field

[0001] The invention belongs to the field of welding equipment, and in particular relates to a plasma welding device for automobile load-bearing components. Background Art

[0002] Plasma welding equipment is an efficient welding tool that uses a high-temperature, high-energy-density plasma arc as a heat source. Its core principle is to form plasma through ionized gas to achieve precise fusion of metal materials. When existing plasma welding equipment is used to weld a workpiece, it is necessary to first clamp and fix the workpiece to be welded through a clamping mechanism, and then weld the workpiece through a plasma welding gun. After welding is completed, the welded workpiece is removed. When the workpiece is clamped and unloaded, the plasma welding gun is in a standby state, thereby reducing the operating time and welding efficiency of the welding equipment; on the other hand, when the clamping mechanism is clamping the workpiece, in order to ensure the stability of the workpiece clamping and welding, the workpiece needs to be stably supported by a supporting plane, which makes it inconvenient to place and unload the workpiece, especially for heavy workpieces such as automobile load-bearing components. Due to the plane support, it is inconvenient for the hand to apply force, which will affect the efficiency and safety of loading and unloading the workpiece. Summary of the invention

[0003] In view of the problems in the related art, the present invention proposes a plasma welding device for automobile load-bearing components to overcome the above technical problems existing in the existing related art.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a plasma welding device for automobile load-bearing components, comprising a welding workbench and a plasma welding gun assembly, wherein a turntable is rotatably mounted on the top of the welding workbench, a rotary drive assembly connected to the turntable is installed inside the welding workbench, and a plurality of clamping mechanisms are installed on the top surface of the welding workbench, wherein the rotary drive assembly can drive the turntable to rotate forward or reverse, so that the turntable can drive the plurality of clamping mechanisms to move alternately to one side of the plasma welding gun assembly in sequence; The clamping mechanism comprises a fixture plate, on which a clamping assembly and a clamping drive assembly in transmission connection with the clamping assembly are mounted, wherein the clamping drive assembly can drive the clamping assembly to close and clamp when the fixture plate moves toward the plasma welding gun assembly, and can also drive the clamping assembly to move and open when the fixture plate moves away from the plasma welding gun assembly; The jig plate is also equipped with a pushing mechanism, which includes a lifting drive assembly and a plurality of pushing support rods. The lifting drive assembly can drive the plurality of pushing support rods downward and hidden inside the jig plate when the jig plate moves toward the plasma welding gun assembly, and can also drive the plurality of pushing support rods upward and extend to the top surface of the jig plate when the jig plate moves away from the plasma welding gun assembly.

[0005] Furthermore, the rotary drive assembly includes a motor, which is fixedly installed inside the welding workbench. A rotating shaft is installed on the top end of the motor, and the top end of the rotating shaft is fixedly connected to the bottom surface of the turntable.

[0006] Furthermore, a support ring seat located below the turntable is fixedly mounted on the inner wall of the welding workbench, and a plurality of balls are slidably mounted on the top surface of the support ring seat through slots, and the balls are rollingly supported on the bottom surface of the turntable.

[0007] Furthermore, a partition capable of separating a plurality of clamping mechanisms from each other is fixedly mounted on the top surface of the turntable.

[0008] Furthermore, the plasma welding gun assembly comprises a welding robot arm, and a plasma welding gun is installed at the end of the welding robot arm.

[0009] Furthermore, the clamping assembly includes a longitudinal slide groove and a transverse slide groove, and the longitudinal slide groove and the transverse slide groove are staggered on the top surface of the jig plate. Both ends of the longitudinal slide groove are slidably installed with longitudinal sliders, and the top ends of the longitudinal sliders are fixedly installed with longitudinal clamps located above the jig plate. Both ends of the transverse slide groove are slidably installed with transverse sliders, and the top ends of the transverse sliders are fixedly installed with transverse clamps located above the jig plate.

[0010] Further, the clamping drive assembly includes a longitudinal screw rod, two transverse screw rods and a transmission unit, the longitudinal screw rod is rotatably installed inside the longitudinal slide groove, the two ends of the longitudinal screw rod are provided with external threads in opposite directions, and the longitudinal screw rod is respectively connected to the longitudinal sliders at the two ends of the longitudinal slide groove through the external threads at the two ends; The two transverse screw rods are rotatably mounted at the two ends of the transverse slide groove, and the two transverse screw rods are threadedly connected with the corresponding transverse slider through external threads. A transmission bevel gear is fixedly mounted on the longitudinal screw rod, and a driven bevel gear meshing and transmission-connected with the transmission bevel gear is fixedly mounted on the two transverse screw rods. The transmission unit can drive the longitudinal screw to rotate when the jig plate moves toward the plasma welding gun assembly, so that the longitudinal screw and the transverse screw drive the longitudinal clamping plate and the transverse clamping plate to move closer, and can also drive the longitudinal screw to rotate in the opposite direction when the jig plate moves away from the plasma welding gun assembly, so that the longitudinal screw and the transverse screw drive the longitudinal clamping plate and the transverse clamping plate to move and open.

[0011] Furthermore, the transmission unit includes a gear and an arc-shaped rack, the gear is fixedly mounted on the outer end of the longitudinal screw rod, the arc-shaped rack is fixedly mounted on the outer ring of the top surface of the welding workbench, and the arc-shaped rack can be meshed and connected with the gear when the gear moves past.

[0012] Furthermore, the lifting drive assembly includes a lifting slide and a pushing unit, the lifting slide is opened inside the jig plate, a lifting slide is slidably installed in the lifting slide, a plurality of pushing support rods are fixedly installed on the top surface of the lifting slide, and the top surface of the jig plate is provided with a plurality of through holes corresponding to the pushing support rods one by one, the pushing unit can push the lifting slide upward when the jig plate moves to the loading and unloading station, and can release the pushing limit of the lifting slide after the jig plate moves away from the loading and unloading station.

[0013] Furthermore, the pushing unit includes a pushing shaft and a support seat, the pushing shaft is fixedly installed on the bottom surface of the lifting slide, the bottom end of the pushing shaft slides and extends to the interior of the welding workbench and is fixedly installed with an upper guide wedge, the support seat is fixedly installed at one end of the welding workbench away from the plasma welding gun assembly, and a lower guide wedge is fixedly installed on the top of the support seat, and the ends of the upper guide wedge and the lower guide wedge are provided with guide inclined surfaces that can slide and abut against each other.

[0014] The present invention has the following beneficial effects: 1. In the present invention, a plurality of clamping mechanisms are installed on the turntable. When a workpiece clamped on one of the clamping mechanisms is welded by the plasma welding gun assembly, a new workpiece to be welded can be clamped on other clamping mechanisms simultaneously. After a round of welding of workpieces is completed, the turntable can be driven to rotate by the rotary drive assembly, so that the turntable can drive the plurality of clamping mechanisms to move alternately to one side of the plasma welding gun assembly in turn, so that the plasma welding gun assembly can continue to perform welding work, which is beneficial to improving the welding efficiency of the plasma welding equipment.

[0015] 2. In the present invention, when the jig plate moves toward the direction of the plasma welding gun assembly, the transmission unit can drive the longitudinal screw to rotate, so that the longitudinal screw and the transverse screw drive the longitudinal clamping plate and the transverse clamping plate to move closer, so as to clamp and fix the workpiece on the jig plate. Correspondingly, when the jig plate moves away from the plasma welding gun assembly, the transmission unit drives the longitudinal screw to rotate in the opposite direction, so that the longitudinal screw and the transverse screw drive the longitudinal clamping plate and the transverse clamping plate to move and open, thereby loosening the clamping of the workpiece. Through the cooperation of the transmission unit, the longitudinal screw, the transverse screw, the longitudinal clamping block and the transverse clamping block, the workpiece can be clamped and released automatically during the movement of the jig, thereby making the clamping and releasing process of the workpiece more convenient and quick, and improving the clamping and unloading efficiency of the workpiece.

[0016] 3. In the present invention, when the workpiece is loaded and clamped, the workpiece can be supported by the pushing support rod so that the workpiece is suspended and placed above the jig plate, thereby making it more convenient and labor-saving to load and place the workpiece, and preventing the edge of the workpiece from hitting the hands of the staff. When the jig plate drives the workpiece to move to the welding station and clamps and positions the workpiece, the pushing support rod can be driven by the lifting drive assembly to move downward and hide inside the jig plate, so that the workpiece can be stably placed on the top surface of the jig plate, thereby improving the stability of the workpiece during clamping. When moving to the upper and lower material stations after welding, the pushing support rod is driven by the lifting drive assembly to reset upward and push the workpiece upward again, so that the workpiece is in a suspended state, thereby facilitating the staff to apply force with their hands and lift the workpiece upward from the edge of the workpiece to unload. Through the cooperation of the pushing support rod and the lifting drive assembly, the loading and unloading process of the workpiece is more convenient and labor-saving, and the efficiency and safety of loading and unloading of the workpiece are improved.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, they can also obtain drawings based on these drawings without paying creative work.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the plasma welding device of the present invention; Figure 2 For the present invention Figure 1 A local enlarged structural schematic diagram; Figure 3 This is one of the three-dimensional structural schematic diagrams of the welding workbench of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the local enlarged structure at B; Figure 5 The second schematic diagram of the three-dimensional structure of the welding workbench of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the local enlarged structure at C; Figure 7 The third schematic diagram of the three-dimensional structure of the welding workbench of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the local enlarged structure at D.

[0020] In the figure: 1. welding workbench; 11. turntable; 12. spacer; 13. support ring seat; 14. ball bearing; 15. motor; 16. rotating shaft; 2. clamping mechanism; 21. fixture plate; 22. longitudinal clamping plate; 23. transverse clamping plate; 24. longitudinal screw rod; 25. gear; 26. arc rack; 27. longitudinal slide groove; 28. transverse slide groove; 29. ​​transverse screw rod; 210. longitudinal slider; 211. transverse slider; 212. transmission bevel gear; 213. driven bevel gear; 3. push mechanism; 31. push support rod; 32. through hole; 33. lifting slide groove; 34. lifting slide plate; 35. push shaft; 36. upper guide wedge block; 37. lower guide wedge block; 38. support seat; 39. guide slope; 4. plasma welding gun assembly; 41. welding robot arm; 42. plasma welding gun. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0022] In the description of the present invention, it is necessary to understand that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the invention.

[0023] Embodiment 1 See also Figures 1-4As shown, the present invention is a plasma welding device for automobile load-bearing components, comprising a welding workbench 1 and a plasma welding gun assembly 4, a turntable 11 is rotatably installed on the top of the welding workbench 1, a rotating drive assembly connected to the turntable 11 is installed inside the welding workbench 1, a plurality of clamping mechanisms 2 are installed on the top surface of the welding workbench 1, the rotating drive assembly can drive the turntable 11 to rotate forward or reverse, so that the turntable 11 can drive the plurality of clamping mechanisms 2 to move alternately to one side of the plasma welding gun assembly 4 in sequence; the clamping mechanism 2 comprises a fixture plate 21, a clamping assembly and a clamping drive assembly connected to the clamping assembly are installed on the fixture plate 21, and the clamping drive assembly is connected to the clamping assembly in a transmission manner. The moving assembly can drive the clamping assembly to close and clamp when the jig plate 21 moves toward the plasma welding gun assembly 4, and can also drive the clamping assembly to move and open when the jig plate 21 moves away from the plasma welding gun assembly 4; a pushing mechanism 3 is also installed on the jig plate 21, and the pushing mechanism 3 includes a lifting driving assembly and a plurality of pushing support rods 31. The lifting driving assembly can drive the plurality of pushing support rods 31 downward and hidden inside the jig plate 21 when the jig plate 21 moves toward the plasma welding gun assembly 4, and can also drive the plurality of pushing support rods 31 upward and extend to the top surface of the jig plate 21 when the jig plate 21 moves away from the plasma welding gun assembly 4; Specifically, two clamping mechanisms 2 are provided in the present embodiment, and the two clamping mechanisms 2 are respectively located at the loading and unloading station (the side of the welding workbench 1 away from the plasma welding gun assembly 4) and the welding station (the side of the welding workbench 1 close to the plasma welding gun assembly 4). When welding the automobile load-bearing component, the automobile load-bearing component to be welded is first placed on the pushing support rod 31 above the jig plate 21 at the loading and unloading station, and the automobile load-bearing component is suspended in the air by multiple pushing support rods 31, and then the turntable 11 is driven to rotate by the rotating drive assembly, so that the turntable 11 drives the jig plate 21 to rotate and move, and at this time, the lifting drive assembly drives multiple pushing support rods 31 to move downward synchronously, so that the pushing support rods 31 move downward and shrink inside the jig plate 21, thereby stably placing the automobile load-bearing component on the top surface of the jig plate 21, and then the clamping drive assembly drives the clamping assembly to close to clamp and fix the automobile load-bearing component until the turntable 11 rotates 180 degrees, and the jig plate 21 and the automobile load-bearing component are transported to the welding station. The two clamping mechanisms 2 are moved to the loading and unloading station, and the other clamping mechanism 2 is moved to the loading and unloading station. Then, the plasma welding gun assembly 4 can be used to perform plasma welding on the automobile load-bearing components, and the clamping mechanism 2 on the loading and unloading station can be loaded and unloaded. When welding is completed, the turntable 11 is driven by the rotating drive assembly to rotate 180 degrees in the opposite direction. At this time, the turntable 11 drives the two clamping mechanisms 2 to move and change positions. The clamping mechanism 2 moving to the welding station clamps and positions the automobile load-bearing components through the above-mentioned positioning and clamping process, and in the clamping mechanism 2 moving upward and unloading, the clamping drive assembly first drives the clamping assembly to move and open to relax the clamping fixation of the automobile load-bearing components, and then the lifting drive assembly drives the multiple pushing support rods 31 to reset upward, so that the pushing support rods 31 push and lift the welded automobile load-bearing components upward, so that the automobile load-bearing components are in a suspended state, and then the staff holds the two ends of the automobile load-bearing components, that is, they can lift and remove the automobile load-bearing components; in this reciprocating manner, the loading and unloading and welding processes of the automobile load-bearing components can be continuously carried out; The two clamping mechanisms 2 are driven by the turntable 11 to move alternately to the welding station and the loading and unloading station in turn, so that the loading and unloading and welding processes can be carried out simultaneously, which is beneficial to improving the welding efficiency of the plasma welding equipment; through the cooperation of the pushing support rod 31 and the lifting drive assembly, the automobile load-bearing components are in a suspended state during loading and unloading, thereby making the loading and unloading process of the automobile load-bearing components more convenient and labor-saving, and improving the efficiency and safety of loading and unloading of the automobile load-bearing components.

[0024] Embodiment 2 See also Figure 1 , Figure 7 , Figure 8As shown, the difference between this embodiment and the above embodiment is that the rotation drive assembly includes a motor 15, the motor 15 is fixedly installed inside the welding workbench 1, and a rotating shaft 16 is installed on the top end of the motor 15, and the top end of the rotating shaft 16 is fixedly connected to the bottom surface of the turntable 11; When the two clamping mechanisms 2 need to be moved and replaced, the motor 15 drives the rotating shaft 16 to rotate, and the rotating shaft 16 drives the rotating disk 11 to rotate synchronously, so that the rotating disk 11 drives the clamping mechanisms 2 thereon to move and replace.

[0025] Furthermore, a support ring seat 13 located below the turntable 11 is fixedly installed on the inner wall of the welding workbench 1, and a plurality of balls 14 are slidably mounted on the top surface of the support ring seat 13 through a card slot, and the balls 14 are rollingly supported on the bottom surface of the turntable 11. The support ring seat 13 and the balls 14 cooperate to support the turntable 11, which can improve the stability of the turntable 11 and prevent the turntable 11 from shifting and causing the workpiece position to shift, which is beneficial to improving the welding accuracy of the device, and the balls 14 are in rolling contact with the turntable 11, which can reduce the friction resistance when the turntable 11 rotates.

[0026] Furthermore, a partition 12 that can separate multiple clamping mechanisms 2 from each other is fixedly installed on the top surface of the turntable 11. The partition 12 separates the clamping mechanisms 2 on the welding station and the loading and unloading stations, which can prevent sparks generated during welding at the welding station from splashing to the loading and unloading stations, thereby improving the safety during loading and unloading.

[0027] Embodiment 3 See also Figure 1 As shown, the difference between this embodiment and the above embodiment is that the plasma welding gun assembly 4 includes a welding robot arm 41, and a plasma welding gun 42 is installed at the end of the welding robot arm 41. The plasma welding gun 42 is driven by the welding robot arm 41 to move for welding, which improves the freedom of movement of the plasma welding gun 42 and facilitates welding of irregular welds.

[0028] Embodiment 4 See also Figures 1-4 As shown, the difference between this embodiment and the above embodiment is that the clamping assembly includes a longitudinal slide groove 27 and a transverse slide groove 28, and the longitudinal slide groove 27 and the transverse slide groove 28 are staggered and arranged on the top surface of the fixture plate 21, and longitudinal sliders 210 are slidably installed at both ends of the longitudinal slide groove 27, and the top of the longitudinal slider 210 is fixedly installed with a longitudinal clamping plate 22 located above the fixture plate 21, and transverse sliders 211 are slidably installed at both ends of the transverse slide groove 28, and the top of the transverse slider 211 is fixedly installed with a transverse clamping plate 23 located above the fixture plate 21; The clamping drive assembly includes a longitudinal screw rod 24, two transverse screw rods 29 and a transmission unit. The longitudinal screw rod 24 is rotatably installed inside the longitudinal slide groove 27. The two ends of the longitudinal screw rod 24 are provided with external threads in opposite directions. The longitudinal screw rod 24 is threadedly connected to the longitudinal sliders 210 at the two ends of the longitudinal slide groove 27 through the external threads at the two ends. The two transverse screw rods 29 are rotatably installed at the two ends of the transverse slide groove 28, and the two transverse screw rods 29 are threadedly connected with the corresponding transverse slider 211 through external threads. A transmission bevel gear 212 is fixedly installed on the longitudinal screw rod 24, and a driven bevel gear 213 meshing and transmission-connected with the transmission bevel gear 212 is fixedly installed on the two transverse screw rods 29; the transmission unit can drive the longitudinal screw rod 24 to rotate when the jig plate 21 moves toward the plasma welding gun assembly 4, so that the longitudinal screw rod 24 and the transverse screw rod 29 drive the longitudinal clamping plate 22 and the transverse clamping plate 23 to move closer, and can also drive the longitudinal screw rod 24 to rotate in the opposite direction when the jig plate 21 moves away from the plasma welding gun assembly 4, so that the longitudinal screw rod 24 and the transverse screw rod 29 drive the longitudinal clamping plate 22 and the transverse clamping plate 23 to move and open; The transmission unit includes a gear 25 and an arc-shaped rack 26. The gear 25 is fixedly mounted on the outer end of the longitudinal screw rod 24. The arc-shaped rack 26 is fixedly mounted on the outer ring of the top surface of the welding workbench 1. The arc-shaped rack 26 can be meshed and connected with the gear 25 when the gear 25 moves past. When the turntable 11 rotates and drives the jig plate 21 and the automobile load-bearing component to move toward the welding station, it will drive the gear 25 to move through the arc rack 26 position. At this time, the gear 25 rotates under the meshing transmission of the arc rack 26, so that the gear 25 drives the longitudinal screw rod 24 to rotate. When the longitudinal screw rod 24 rotates, it drives the longitudinal sliders 210 at both ends to move toward each other along the longitudinal slide groove 27 through thread transmission, thereby driving the two longitudinal clamping plates 22 on the jig plate 21 to move toward each other. At the same time, the longitudinal screw rod 24 drives the transverse screw rods 29 on both sides to rotate synchronously through the meshing transmission between the transmission bevel gear 212 and the driven bevel gear 213, so that the two transverse screw rods 29 drive the two transverse sliders 211 to move toward each other along the transverse slide groove 28 through thread transmission, thereby driving the two transverse clamping plates 23 to move toward each other, and then the automobile load-bearing component on the top surface of the jig plate 21 is clamped and positioned by the two longitudinal clamping plates 22 and the two transverse clamping plates 23 that are gradually closed and approached. When the welding is completed, the turntable 11 rotates in the opposite direction to drive the jig plate 21 and the automobile load-bearing components to move to the upper and lower material loading stations, and the gear 25 is driven to move in the opposite direction to pass the arc rack 26. At this time, the gear 25 rotates in the opposite direction under the meshing transmission of the arc rack 26, so that the gear 25 drives the longitudinal screw rod 24 to rotate in the opposite direction. When the longitudinal screw rod 24 rotates in the opposite direction, the longitudinal sliders 210 at both ends are driven to move in the opposite direction along the longitudinal slide groove 27 to open, thereby driving the two longitudinal clamping plates 22 on the jig plate 21 to move in the opposite direction and open. At the same time, the longitudinal screw rod 24 drives the transverse screw rods 29 on both sides to rotate in the opposite direction through the meshing transmission between the transmission bevel gear 212 and the driven bevel gear 213, so that the two transverse screw rods 29 drive the two transverse sliders 211 to move in the opposite direction along the transverse slide groove 28 to open, thereby driving the two transverse clamping plates 23 to move in the opposite direction and open, thereby causing the longitudinal clamping plates 22 and the transverse clamping plates 23 to relax the clamping positioning of the automobile load-bearing components on the top surface of the jig plate 21. Through the transmission cooperation among the gear 25, the arc-shaped rack 26, the longitudinal screw 24 and the transverse screw 29, when the jig plate 21 drives the automobile load-bearing component to move to the welding station, the clamping plate is automatically driven to clamp and fix the automobile load-bearing component, without the need to clamp and fix the automobile load-bearing component through other driving sources or manually drive the clamping plate. At the same time, when the jig plate 21 drives the automobile load-bearing component to move to the upper and lower loading and unloading stations, the clamping plate is automatically driven to loosen the clamping and fixing of the automobile load-bearing component, making the clamping, positioning and loosening process of the automobile load-bearing component more convenient and quick, which is beneficial to improving the clamping and loading and unloading efficiency of the clamping mechanism 2. The clamping plate is driven by the screw to move and clamp, and since the screw has a self-locking property, the firmness of the clamping plate to the automobile load-bearing component can be improved.

[0029] Embodiment 5 See also Figures 3-8 As shown, the difference between this embodiment and the above embodiment is that the lifting drive assembly includes a lifting slide 33 and a pushing unit, the lifting slide 33 is opened inside the fixture plate 21, a lifting slide 34 is slidably installed in the lifting slide 33, a plurality of pushing support rods 31 are fixedly installed on the top surface of the lifting slide 34, and the top surface of the fixture plate 21 is provided with a plurality of through holes 32 corresponding to the pushing support rods 31, and the pushing unit can push the lifting slide 34 upward when the fixture plate 21 moves to the loading and unloading station, and can release the pushing limit of the lifting slide 34 after the fixture plate 21 moves away from the loading and unloading station; The push unit includes a push shaft 35 and a support seat 38. The push shaft 35 is fixedly mounted on the bottom surface of the lifting slide plate 34. The bottom end of the push shaft 35 slides and extends into the interior of the welding workbench 1 and is fixedly mounted with an upper guide wedge 36. The support seat 38 is fixedly mounted at one end of the interior of the welding workbench 1 away from the plasma welding gun assembly 4. A lower guide wedge 37 is fixedly mounted on the top of the support seat 38. The ends of the upper guide wedge 36 and the lower guide wedge 37 are provided with guide inclined surfaces 39 that can slide and abut against each other. Among them, when the jig plate 21 is located at the loading and unloading station, the lower guide wedge block 37 abuts against the bottom surface of the upper guide wedge block 36. At this time, the upper guide wedge block 36 pushes the push shaft 35, the lifting slide plate 34 and the push support rod 31 upward, so that the push support rod 31 extends to the top of the jig plate 21, so that the automobile load-bearing component on the jig plate 21 is in a supported suspended state. When the turntable 11 drives the jig plate 21 to move toward the welding station, the turntable 11 drives the push shaft 35 and the upper guide wedge block 36 to move synchronously, so that the upper guide wedge block 36 and the lower guide wedge block 37 are gradually staggered. At this time, the lifting slide plate 34 drives the push support rod 31 to shrink downward and hide in the through hole 32, so that the automobile load-bearing component The parts can be placed stably on the top surface of the jig plate 21, thereby improving the stability of the automobile load-bearing components during clamping and welding; and when the welding of the automobile load-bearing components is completed and the turntable 11 drives the jig plate 21 to move to the loading and unloading station, the upper guide wedge 36 moves again to the lower guide wedge 37. At this time, the lower guide wedge 37 pushes the upper guide wedge 36 upward through the guide inclined surface 39, so that the upper guide wedge 36 resets the pushing shaft 35, the lifting slide plate 34 and the pushing support rod 31 upward, so that the pushing support rod 31 pushes and lifts the automobile load-bearing components on the top surface of the jig plate 21 upward, so that the automobile load-bearing components are in a suspended state, thereby facilitating the staff to remove the welded automobile load-bearing components.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] The preferred embodiments of the invention disclosed above are only used to help explain the invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the invention, so that those skilled in the art can understand and use the invention well.

Claims

1. A plasma welding device for automobile load-bearing components, comprising a welding workbench and a plasma welding gun assembly, characterized in that: A turntable is rotatably mounted on the top of the welding workbench, a rotary drive assembly connected to the turntable is mounted inside the welding workbench, and a plurality of clamping mechanisms are mounted on the top surface of the welding workbench. The rotary drive assembly can drive the turntable to rotate forward or reverse, so that the turntable can drive the plurality of clamping mechanisms to move alternately to one side of the plasma welding gun assembly in sequence; The clamping mechanism comprises a fixture plate, on which a clamping assembly and a clamping drive assembly in transmission connection with the clamping assembly are mounted, wherein the clamping drive assembly can drive the clamping assembly to close and clamp when the fixture plate moves toward the plasma welding gun assembly, and can also drive the clamping assembly to move and open when the fixture plate moves away from the plasma welding gun assembly; The jig plate is also equipped with a pushing mechanism, which includes a lifting drive assembly and a plurality of pushing support rods. The lifting drive assembly can drive the plurality of pushing support rods downward and hidden inside the jig plate when the jig plate moves toward the plasma welding gun assembly, and can also drive the plurality of pushing support rods upward and extend to the top surface of the jig plate when the jig plate moves away from the plasma welding gun assembly.

2. The plasma welding device for automobile load-bearing components according to claim 1, characterized in that: The rotary drive assembly comprises a motor, which is fixedly installed inside the welding workbench. A rotating shaft is transmission-installed on the top end of the motor, and the top end of the rotating shaft is fixedly connected to the bottom surface of the turntable.

3. The plasma welding device for automobile load-bearing components according to claim 1, characterized in that: A support ring seat located below the turntable is fixedly mounted on the inner wall of the welding workbench, and a plurality of balls are slidably mounted on the top surface of the support ring seat through a slot, and the balls are rollingly supported on the bottom surface of the turntable.

4. The plasma welding device for automobile load-bearing components according to claim 1, characterized in that: A partition which can separate a plurality of clamping mechanisms from each other is fixedly installed on the top surface of the rotating disk.

5. The plasma welding device for automobile load-bearing components according to claim 1, characterized in that: The plasma welding gun assembly comprises a welding mechanical arm, and a plasma welding gun is installed at the end of the welding mechanical arm.

6. The plasma welding device for automobile load-bearing components according to claim 1, characterized in that: The clamping assembly includes a longitudinal slide groove and a transverse slide groove, and the longitudinal slide groove and the transverse slide groove are staggered on the top surface of the jig plate. Both ends of the longitudinal slide groove are slidably installed with longitudinal sliders, and the top ends of the longitudinal sliders are fixedly installed with longitudinal clamping plates located above the jig plate. Both ends of the transverse slide groove are slidably installed with transverse sliders, and the top ends of the transverse sliders are fixedly installed with transverse clamping plates located above the jig plate.

7. The plasma welding device for automobile load-bearing components according to claim 6, characterized in that: The clamping drive assembly includes a longitudinal screw rod, two transverse screw rods and a transmission unit. The longitudinal screw rod is rotatably installed inside the longitudinal slide groove. The two ends of the longitudinal screw rod are provided with external threads in opposite directions. The longitudinal screw rod is respectively connected to the longitudinal sliders at the two ends of the longitudinal slide groove through the external threads at the two ends. The two transverse screw rods are rotatably mounted at the two ends of the transverse slide groove, and the two transverse screw rods are threadedly connected with the corresponding transverse slider through external threads. A transmission bevel gear is fixedly mounted on the longitudinal screw rod, and a driven bevel gear meshing and transmission-connected with the transmission bevel gear is fixedly mounted on the two transverse screw rods. The transmission unit can drive the longitudinal screw to rotate when the jig plate moves toward the plasma welding gun assembly, so that the longitudinal screw and the transverse screw drive the longitudinal clamping plate and the transverse clamping plate to move closer, and can also drive the longitudinal screw to rotate in the opposite direction when the jig plate moves away from the plasma welding gun assembly, so that the longitudinal screw and the transverse screw drive the longitudinal clamping plate and the transverse clamping plate to move and open.

8. The plasma welding device for automobile load-bearing components according to claim 7, characterized in that: The transmission unit includes a gear and an arc-shaped rack. The gear is fixedly mounted on the outer end of the longitudinal screw rod, and the arc-shaped rack is fixedly mounted on the outer ring of the top surface of the welding workbench. The arc-shaped rack can be meshed and connected with the gear when the gear moves past.

9. The plasma welding device for automobile load-bearing components according to claim 1, characterized in that: The lifting drive assembly includes a lifting slide and a pushing unit. The lifting slide is opened inside the jig plate. A lifting slide is slidably installed in the lifting slide. A plurality of pushing support rods are fixedly installed on the top surface of the lifting slide. The top surface of the jig plate is provided with a plurality of through holes corresponding to the pushing support rods. The pushing unit can push the lifting slide upward when the jig plate moves to the loading and unloading station, and can release the pushing limit of the lifting slide after the jig plate moves away from the loading and unloading station.

10. The plasma welding device for automobile load-bearing components according to claim 9, characterized in that: The pushing unit includes a pushing shaft and a support seat, the pushing shaft is fixedly installed on the bottom surface of the lifting slide, the bottom end of the pushing shaft slides and extends to the interior of the welding workbench and is fixedly installed with an upper guide wedge, the support seat is fixedly installed at one end of the welding workbench away from the plasma welding gun assembly, and a lower guide wedge is fixedly installed on the top of the support seat, and the ends of the upper guide wedge and the lower guide wedge are provided with guide inclined surfaces that can slide and abut against each other.

Images