A plasma welding device for automotive parts

Abstract

The present invention discloses a plasma welding device for automotive parts, which relates to the technical field of plasma welding devices. A plasma welding device for automotive parts includes a plurality of bottom plates, and further includes: a lifting driving part located on one side of the bottom plate, a connecting plate is installed on the lifting driving part, and a plasma welding torch is installed on the connecting plate; when clamping and fixing parts, the present invention can not only increase the space above the clamping groove, but also clean the dust and foreign matters on the surface of the parts when fixing the parts. At the same time, it can also drive the pressing plate to automatically press and fix the parts, and while the pressing plate presses and fixes, it can also clean the foreign matters on the surface of the plasma welding torch; at the same time, the pressing plate can also realize cooling while welding, which is beneficial to improving the quality of plasma welding. Therefore, compared with the prior art, it has more beneficial effects and can further improve the welding quality and efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of plasma welding devices, and specifically relates to a plasma welding device for automotive parts. Background Art

[0002] Plasma welding utilizes the plasma generated by heating a gas with an electric arc to melt metal materials and welding powder at high temperatures to achieve welding;

[0003] After retrieval, in the prior art, the publication number is CN118492587B, the publication date is November 19, 2024, and the name is a plasma welding device for a workpiece, belonging to the technical field of plasma welding. It includes: a linear driver, with a lifting frame provided at its execution end, and a welding torch provided at the bottom of the lifting frame; a grinding frame, which is vertically slidably connected to the lifting frame through an elastic member, a hollow cylinder is rotatably connected to the bottom of the grinding frame, two annular frames are axially slidably connected inside the hollow cylinder, and a flexible grinding sleeve is fixedly sleeved between the outer contour surfaces of the two annular frames; a bidirectional lead screw, which is rotatably connected inside the hollow cylinder, and a plurality of pairs of ejector rods are hinged between the two annular frames, and every two ejector rods in the same group are hinged to each other; a clamping mechanism, which is provided on the welding table; This application can clean the welding powder on pipe workpieces by grinding, reducing the probability of sand holes generated due to the solidification of welding powder on the welds of pipe workpieces. At the same time, it can adapt to the groove shape of pipe workpieces, which is beneficial to the cleaning work of welding powder in the grooves;

[0004] Although the above patent can effectively improve the efficiency and quality of plasma welding, the technical solutions and technical effects of the above prior art still need to be improved. Therefore, a plasma welding device for automotive parts is proposed to further improve the efficiency and quality of plasma welding of parts. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a plasma welding device for automotive parts that can overcome or at least partially solve the above problems.

[0006] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a plasma welding device for automotive parts, including a plurality of bottom plates, and further including: a lifting drive part located on one side of the bottom plate, a connecting plate is installed on the lifting drive part, and a plasma welding gun is installed on the connecting plate; a support seat is arranged on each bottom plate in a lifting manner, and a clamping groove for limiting parts is provided on the support seat; pressing arms are respectively arranged on both sides of the support seat and are engaged with the support seat. Place the two parts to be welded on the support seat and press down the parts, so that the support seat moves downward and drives the end of the pressing arm close to the support seat to rotate, so that the end of the pressing arm away from the support seat approaches above the parts, and after the support seat is separated from the pressing arm, the pressing arm quickly presses the parts tightly from both sides of the parts and generates a slap; when the welding is completed, drive the support seat to quickly move upward and reset, so that the parts on the support seat vibrate, so as to reduce the stress of the parts after welding.

[0007] Preferably, sliding rods are symmetrically and fixedly connected to the bottom surface of the support seat, second teeth are arranged on both sliding rods, the sliding rods are slidably connected to the bottom plate, a spring is connected between the bottom surface of the support seat and the bottom plate, and a limiting block is fixedly connected to the side wall of the lower end of the sliding rod.

[0008] Preferably, a support plate is installed on the bottom plate, a double-headed cylinder is installed on the support plate, ratchet parts are installed on the execution ends of both ends of the double-headed cylinder, external teeth are arranged on the outer circumference of the ratchet parts, and the external teeth are engaged with the second teeth. When the support seat moves downward, the sliding rod is locked through the ratchet part; when the double-headed cylinder drives the ratchet part away, the support seat quickly rebounds and resets through the spring.

[0009] Preferably, first teeth are connected to both side walls of the support seat, connecting arms are symmetrically installed on the bottom plate, a fixed shaft is fixedly connected to the connecting arm, a gear is rotatably connected to the fixed shaft, the gear is engaged with the first teeth, one end of the pressing arm is connected to the gear, and a torsion spring is fixedly connected between the gear and the connecting arm.

[0010] Furthermore, a pressing plate is further included above the two parts, the pressing plate is connected to the mounting plate on the connecting plate, and the pressing plate is used to cooperate with the pressing arm to tightly press between the two parts.

[0011] Preferably, connection seats are symmetrically and fixedly connected to the support base. Guide rods are fixedly connected to the connection seats. The pressing plate is slidably connected to the guide rods. A tension spring is sleeved on the guide rods. Two ends of the tension spring are respectively and fixedly connected to the connection seat and the bottom surface of the pressing plate. A cylinder is installed on the connection plate. The execution end of the cylinder is connected to the mounting plate. The mounting plate is located below the connection plate. A first magnet is installed on the bottom surface of the mounting plate. A second magnet is installed on the upper surface of the pressing plate. The first magnet and the second magnet are adsorbed to each other.

[0012] Further, the pressing plate includes two cross plates and an arc plate located between the two cross plates. A limiting and cleaning groove is formed in the arc plate. The pressing plate is sleeved on the plasma welding torch through the limiting and cleaning groove.

[0013] Further, two ends of the limiting and cleaning groove respectively extend to positions close to the cross plates.

[0014] Further, an evacuation groove is formed in the clamping groove of the support base below the plasma welding torch. A through groove in a penetrating shape is formed in the support base. The through groove is communicated with the evacuation groove.

[0015] Further, cooling channels are formed in the cross plates and the arc plate of the pressing plate to cool the welded parts during the welding process after the pressing plate presses the parts.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0017] 1. The plasma welding device for automotive parts can quickly achieve the effects of limiting, aligning, and tightly fixing the parts to be welded. By increasing the space above the support base, it is convenient to place the parts into the clamping groove on the support base, and by pressing down the support base, the pressing arms can quickly press the parts from both sides.

[0018] 2. In the plasma welding device for automotive parts, when the first teeth on the support base are disengaged from the gear, when the pressing arm contacts the parts, it will also generate a slapping action on the parts, which is beneficial to shake off foreign matters such as dust on the surface of the parts, further improving the plasma welding quality; and after the welding is completed, when the support base moves up and resets, the limiting block collides with the bottom plate, causing the welded parts to vibrate and shake. On the one hand, it can shake off the residual welding powder on the parts, and on the other hand, it can make the parts vibrate and shake to further eliminate the internal stress and improve the quality of the welded parts.

[0019] 3. For the plasma welding device of automotive parts, by sleeving the pressure plate on the plasma welding torch, when the support base moves downward to pull the pressure plate downward, the inner wall of the limit cleaning groove can automatically remove the welding slag adhering to the plasma welding torch. This can further prevent pollutants (such as oxides and spattered metal particles) on the surface of the plasma welding torch (especially the nozzle and electrode) from changing the electric field distribution and interfering with the formation of the plasma arc. At the same time, it can also prevent the pollutants on the surface of the plasma welding torch from being involved in the molten pool by the arc, forming inclusions or pores, and removing foreign matters on the surface of the plasma welding torch. It can also prevent the increase of pollutants (such as oxide layers) on the electrode surface, resulting in overheating and accelerated ablation of the electrode, thereby being beneficial to improving the quality of plasma welding;

[0020] 4. For the plasma welding device of automotive parts, after the arc-shaped plate in the pressure plate contacts the parts, it will block the bottom of the limit cleaning groove, so that the limit cleaning groove forms an upper opening. Therefore, during the plasma welding process, when the welding powder is discharged on the surface of the parts, the welding powder will be located in the limit cleaning groove. The limit cleaning groove has an aggregating effect on the welding powder and can prevent the welding powder from slipping off the parts, resulting in a reduction in the welding powder and affecting the welding quality;

[0021] 5. For the plasma welding device of automotive parts, by injecting a cooling medium into the cooling channel, the cooling medium can be cooling water or cooling gas. When the pressure plate presses the parts, by cooling while welding, it can further reduce the heat-affected zone, lower the degree of grain coarsening, and improve the mechanical properties of the weld and the base metal; and reduce welding deformation, especially suitable for thin-walled parts or precision structures, and reduce the straightening cost of the parts after welding; at the same time, the setting of the cooling channel can also quickly cool, shorten the solidification time of the molten pool, reduce the generation of defects such as pores and cracks, and the rapid solidification of the molten pool reduces the gas escape time, and can also inhibit the formation of pores, thereby effectively improving the quality of plasma welding;

[0022] Therefore, when clamping and fixing the parts, this device can not only increase the space above the clamping groove, but also clean the dust and foreign matters on the surface of the parts when fixing the parts, and at the same time can drive the pressure plate to automatically clamp and fix the parts. When the pressure plate clamps and fixes, it can also clean the foreign matters on the surface of the plasma welding torch; at the same time, the pressure plate can also achieve cooling while welding, which is beneficial to improving the quality of plasma welding. Therefore, compared with the prior art, it has more beneficial effects and can further improve the welding quality and efficiency.

[0023] The following further describes in detail the specific embodiments of the present invention with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In the drawings:

[0025] Figure 1Schematic three-dimensional structure diagram of a plasma welding device for automotive parts proposed by the present invention;

[0026] Figure 2 Front view of a plasma welding device for automotive parts proposed by the present invention;

[0027] Figure 3 Top view of a plasma welding device for automotive parts proposed by the present invention;

[0028] Figure 4 Schematic structure diagram of the support base and pressing plate of a plasma welding device for automotive parts proposed by the present invention;

[0029] Figure 5 For a plasma welding device for automotive parts proposed by the present invention Figure 4 Schematic structure diagram of the part at A therein;

[0030] Figure 6 Schematic structure diagram of the slide rod and ratchet member of a plasma welding device for automotive parts proposed by the present invention;

[0031] Figure 7 Schematic structure diagram of the limit cleaning groove of a plasma welding device for automotive parts proposed by the present invention;

[0032] Figure 8 Schematic structure diagram of the pressing arm, gear and first tooth of a plasma welding device for automotive parts proposed by the present invention;

[0033] Figure 9 Schematic structure diagram of the ratchet member, slide rod and second tooth of a plasma welding device for automotive parts proposed by the present invention;

[0034] Figure 10 Schematic structure diagram of the cooling channel of a plasma welding device for automotive parts proposed by the present invention.

[0035] In the figure: 1. Bottom plate; 10. Component; 11. Support seat; 111. Clamping groove; 112. First tooth; 113. Drainage groove; 114. Through groove; 12. Slide bar; 120. Limit block; 121. Second tooth; 122. Ratchet component; 1221. External tooth; 1222. Double-headed cylinder; 1223. Support plate; 13. Spring; 14. Connecting arm; 141. Fixed shaft; 142. Gear; 143. Torsion spring; 144. Pressing arm; 145. Roller; 15. Connecting seat; 151. Guide rod; 152. Tension spring; 153. Pressing plate; 1531. Horizontal plate; 1532. Arc plate; 1533. Limit cleaning groove; 1534. Cooling channel; 16. Leg; 2. Plasma welding torch; 21. Connecting plate; 22. Lifting drive unit; 23. Mounting plate; 231. First magnet; 232. Second magnet; 24. Cylinder. Detailed implementation mode

[0036] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0037] The following combines the attached Figure 1 - attached Figure 10 , and details the technical solutions provided by each embodiment of the present invention.

[0038] Embodiment 1: Refer to Figures 1 - 10 , a plasma welding device for automobile components, including a plurality of bottom plates 1, and further including: a lifting drive unit 22, located on one side of the bottom plate 1 (it should be understood that the lifting drive unit 22 is installed on a bracket and is not suspended. The lifting drive unit 22 can adopt components such as lead screws, cylinder components, hydraulic rods, electric telescopic rods, etc. that can perform reciprocating linear motion). A connecting plate 21 is installed on the lifting drive unit 22, and a plasma welding torch 2 is installed on the connecting plate 21; a support seat 11, which is lifted and lowered on each bottom plate 1, and a clamping groove 111 for limiting the component 10 is opened on the support seat 11; pressing arms 144 are respectively arranged on both sides of the support seat 11, and rollers 145 are rotatably connected to the pressing arms 144 to reduce the friction with the component 10 when the component 10 rotates, and engage with the support seat 11. Place the two components 10 to be welded on the support seat 11, and press down the component 10, so that the support seat 11 moves downward and drives the end of the pressing arm 144 close to the support seat 11 to rotate, so that the end of the pressing arm 144 away from the support seat 11 approaches above the component 10, and after the support seat 11 is separated from the pressing arm 144, the pressing arm 144 quickly presses the component 10 from both sides of the component 10 and generates a slap; when the welding is completed, drive the support seat 11 to quickly move upward and reset, so that the component 10 on the support seat 11 vibrates to reduce the stress after welding the component 10;

[0039] On the bottom surface of the support base 11, slide bars 12 are symmetrically and fixedly connected. Second teeth 121 are provided on both of the two slide bars 12. The slide bars 12 are slidably connected to the bottom plate 1. A spring 13 is connected between the bottom surface of the support base 11 and the bottom plate 1. A limiting block 120 is fixedly connected to the side wall at the lower end of the slide bar 12;

[0040] A support plate 1223 is installed on the bottom plate 1. A double-headed cylinder 1222 is installed on the support plate 1223. Ratchet members 122 are installed on the execution ends at both ends of the double-headed cylinder 1222. External teeth 1221 are circumferentially provided on the outer periphery of the outer ring of the ratchet member 122. The external teeth 1221 are engaged with the second teeth 121. After the support base 11 moves downward, the slide bar 12 is locked through the ratchet member 122; when the double-headed cylinder 1222 drives the ratchet member 122 away, the support base 11 quickly rebounds and resets through the spring 13;

[0041] First teeth 112 are connected to both side walls of the support base 11. Connecting arms 14 are symmetrically installed on the bottom plate 1. A fixed shaft 141 is fixedly connected to the connecting arm 14. A gear 142 is rotatably connected to the fixed shaft 141. The gear 142 is engaged with the first teeth 112. One end of the pressing arm 144 is connected to the gear 142. A torsion spring 143 is fixedly connected between the gear 142 and the connecting arm 14;

[0042] When this device is in use, the installation of this device can be facilitated through the legs 16 installed at the bottom of the bottom plate 1;

[0043] During plasma welding, by respectively placing two parts 10 to be welded on the corresponding support bases 11, and aligning the ends of the two parts 10 on one of the support bases 11, and then pressing down the part 10, the support base 11 moves downward;

[0044] In the initial state, the symmetrically arranged pressing arms 144 expand outward (refer to Figure 6 shown), which makes the space above the support base 11 large. Compared with the prior art, it is more convenient to place the part 10 on the support base 11. During the downward movement of the support base 11, the support base 11 compresses the spring 13, and the second teeth 121 on the slide bar 12 drive the external teeth 1221 on the outer ring of the ratchet member 122 to rotate. At this time, the outer ring of the ratchet member 122 rotates normally (refer to Figure 9 ), and under the thrust of the spring 13, the support base 11 does not move upward through the cooperation with the ratchet member 122.

[0045] And during the downward movement of the support base 11, the first tooth 112 meshes with the gear 142, driving the pressing arm 144 to rotate, so that the length part of the pressing arm 144 away from the gear 142 approaches the component 10. Since the pressing arm 144 is connected to the connecting arm 14 through a torsion spring 143, and in the initial state of the pressing arm 144 (refer to Figure 6 ), the torsion spring 143 is in a reverse relaxed and energy-storing state. When the downward movement stroke of the support base 11 reaches, the first tooth 112 will disengage from the gear 142. At this time, the pressing arm 144 is quickly pressed against the component 10 under the drive of the torsion spring 143, and it is pressed from both sides of the component 10, thereby limiting and pressing the component 10, effectively avoiding displacement during the plasma welding process, and thus improving the quality and efficiency of plasma welding;

[0046] It should be understood that after the gear 142 on the pressing arm 144 disengages from the first tooth 112 on the support base 11, the torsion spring 143 is in a force-applying state, that is, the pressing arm 144 has a certain downward pressure on the component 10 at this time, thereby achieving the pressing effect on the component 10;

[0047] The present device adopts the above method to quickly realize the effects of limiting, aligning, pressing and fixing the component 10 to be welded. And by increasing the space above the support base 11, it is convenient to place the component 10 into the clamping groove 111 on the support base 11, and by pressing down the support base 11, the effect of quickly pressing the component 10 from both sides by the pressing arm 144 is realized;

[0048] In addition, when the first tooth 112 on the support base 11 disengages from the gear 142, when the pressing arm 144 contacts the component 10, it will also generate a slapping action on the component 10, which is beneficial to shake off foreign matters such as dust on the surface of the component 10, and further improve the quality of plasma welding.

[0049] After the component 10 is fixed on the support base 11, the plasma welding torch 2 is driven to move downward, and then the external driving device drives the component 10 to rotate to realize the welding operation.

[0050] After welding is completed, the plasma welding torch 2 moves away, and the double-headed cylinder 1222 drives the ratchet member 122 away from the sliding rod 12, so that the support base 11 loses its restriction and quickly moves upward under the push of the spring 13. The support base 11 is restricted by the limit block 120 on the sliding rod 12 during the upward movement, and the welded component 10 vibrates and shakes after the support base 11 moves upward. On the one hand, the residual welding powder on the component 10 can be shaken off, and on the other hand, the component 10 can be vibrated and shaken to further eliminate internal stress and improve the quality of the welded component 10.

[0051] Embodiment 2: Refer to Figures 1 - 10, An automotive parts plasma welding device, which is basically the same as that in Embodiment 1. Further: It further includes a pressing plate 153 located above between two parts 10. The pressing plate 153 is connected to the mounting plate 23 on the connecting plate 21. The pressing plate 153 is used to cooperate with the pressing arm 144 to tightly press between the two parts 10;

[0052] Connecting seats 15 are symmetrically and fixedly connected to the support base 11. A guide rod 151 is fixedly connected to the connecting seat 15. The pressing plate 153 is slidably connected to the guide rod 151. A tension spring 152 is sleeved on the guide rod 151. Two ends of the tension spring 152 are respectively and fixedly connected to the connecting seat 15 and the bottom surface of the pressing plate 153; A cylinder 24 is installed on the connecting plate 21. The execution end of the cylinder 24 is connected to the mounting plate 23. The mounting plate 23 is located below the connecting plate 21. A first magnet 231 is installed on the bottom surface of the mounting plate 23. A second magnet 232 is installed on the upper surface of the pressing plate 153. The first magnet 231 and the second magnet 232 are adsorbed to each other;

[0053] During the downward movement of the support base 11, the pressing plate 153 is blocked by the fixed block at the top end of the guide rod 151 and is separated from the first magnet 231. The pressing plate 153 is tightly pressed between the two parts 10 under the pulling force of the tension spring 152 to further fix the parts 10;

[0054] At the same time, when the pressing plate 153 is separated from the first magnet 231, the pressing plate 153 will strike on the parts 10 under the pulling of the tension spring 152, which can further clean the dust and foreign objects on the parts 10.

[0055] And when the welding is completed, when driving the support base 11 to move upward and reset, first push the mounting plate 23 downward through the cylinder 24, so that the first magnet 231 is adsorbed to the second magnet 232 on the pressing plate 153 again, and then pull the mounting plate 23 upward through the cylinder 24 to separate the pressing plate 153 from the parts 10, and then move the plasma welding torch 2 upward to generate a large distance from the parts 10. Subsequently, drive the ratchet member 122 to separate from the sliding rod 12 by the double-headed cylinder 1222, so that the support base 11 is reset under the thrust of the spring 13. And when the ratchet member 122 is separated from the sliding rod 12, the lifting drive part 22 synchronously drives the plasma welding torch 2 to move upward and reset. This makes it so that when the support base 11 moves upward and resets, the parts 10 will not come into contact with the plasma welding torch 2 and the pressing plate 153, and the upward movement of the support base 11 can cause the parts 10 to vibrate.

[0056] Embodiment 3: Refer to Figure 4 、 Figure 6 、 Figure 7, a plasma welding device for automobile parts, which is basically the same as that of embodiment 2, and further, a pressing plate 153 includes two horizontal plates 1531 and an arc plate 1532 located between the two horizontal plates 1531, and a limited cleaning groove 1533 is provided on the arc plate 1532, and the pressing plate 153 is sleeved on the plasma welding gun 2 through the limited cleaning groove 1533;

[0057] By sleeve-arranging the pressing plate 153 on the plasma welding gun 2, when the support seat 11 moves downward to pull the pressing plate 153 downward, the inner wall of the limiting cleaning groove 1533 can automatically remove the welding slag adhered to the plasma welding gun 2, which can further prevent the pollutants (such as oxides, splashing metal particles) on the surface of the plasma welding gun 2 (especially the nozzle and the electrode) from changing the electric field distribution and interfering with the formation of the plasma arc. At the same time, it can also prevent the pollutants on the surface of the plasma welding gun 2 from being drawn into the molten pool by the arc to form inclusions or pores, and remove foreign matter on the surface of the plasma welding gun 2, and can also prevent the increase of pollutants (such as oxide layer) on the electrode surface, resulting in overheating of the electrode and accelerated ablation, which is beneficial to improving the quality of plasma welding;

[0058] Therefore, when clamping and fixing the component 10, the device can not only increase the space above the clamping groove 111, but also clean the dust and foreign matter on the surface of the component 10 when fixing the component 10, and at the same time drive the pressure plate 153 to automatically press and fix the component 10, and the pressure plate 153 can also clean foreign matter on the surface of the plasma welding gun 2 while pressing and fixing. Compared with the prior art, the device has more beneficial effects and can further improve the welding quality and efficiency.

[0059] Both ends of the limiting cleaning groove 1533 extend to near the horizontal plate 1531;

[0060] After the arc plate 1532 in the pressure plate 153 contacts the component 10, it will block the bottom of the limiting cleaning groove 1533, so that the limiting cleaning groove 1533 forms an upper opening. Therefore, during the plasma welding process, when the welding powder is discharged on the surface of the component 10, the welding powder will be located in the limiting cleaning groove 1533. The limiting cleaning groove 1533 has a gathering effect on the welding powder and can prevent the welding powder from sliding off the component 10, which will cause the welding powder to reduce and affect the welding quality.

[0061] Example 4: Reference Figure 4 , Figure 5 , Figure 7 , a plasma welding device for automobile parts, which is basically the same as the third embodiment, and further, an emptying groove 113 is provided on the clamping groove 111 of the support seat 11 located below the plasma welding gun 2, and a through-shaped through groove 114 is provided on the support seat 11, and the through groove 114 is connected to the emptying groove 113;

[0062] The evacuation groove 113 can facilitate the removal of dust and foreign objects on the component 10 in contact with the clamping groove 111 when the component 10 is slapped, and the dust and foreign objects can fall into the evacuation groove 113 and be conveniently discharged from the through groove 114.

[0063] Example 5: Refer to Figure 10 , an automotive component plasma welding device, which is basically the same as Example 4. Further, cooling channels 1534 are provided in the cross plate 1531 and the arc plate 1532 of the pressing plate 153 for cooling the welded component 10 during the welding process after the pressing plate 153 presses the component 10;

[0064] By injecting a cooling medium into the cooling channels 1534, the cooling medium can be cooling water or cooling gas. When the pressing plate 153 presses the component 10, by cooling while welding, the heat affected zone can be reduced, the degree of grain coarsening can be decreased, and the mechanical properties of the weld and the base metal can be improved; and the welding deformation can be reduced, especially suitable for thin-walled parts or precision structures, and the straightening cost of the component 10 after welding can be reduced; at the same time, the setting of the cooling channels 1534 can also quickly cool down, shorten the solidification time of the molten pool, reduce the generation of defects such as pores and cracks, and the rapid solidification of the molten pool reduces the gas escape time, and can also inhibit the formation of pores, thereby effectively improving the quality of plasma welding;

[0065] Therefore, when the component 10 is clamped and fixed by this device, not only can the space above the clamping groove 111 be increased, but also the dust and foreign objects on the surface of the component 10 can be cleaned when the component 10 is fixed, and at the same time, the pressing plate 153 can be driven to automatically press and fix the component 10. And when the pressing plate 153 presses and fixes, it can also clean the foreign objects on the surface of the plasma welding torch 2; at the same time, the pressing plate 153 can also cool while welding, which is beneficial to improving the quality of plasma welding. Therefore, compared with the prior art, it has more beneficial effects and can further improve the welding quality and efficiency.

[0066] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content as equivalent variations within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. A plasma welding device for automobile parts, comprising a plurality of base plates (1), characterized in that: Also includes: A lifting drive unit (22) is located on one side of the bottom plate (1), a connecting plate (21) is mounted on the lifting drive unit (22), and a plasma welding gun (2) is mounted on the connecting plate (21); A support seat (11) is lifted and arranged on each of the base plates (1), and a clamping groove (111) for limiting the position of the component (10) is provided on the support seat (11); The pressure arms (144) are respectively arranged on both sides of the support seat (11) and mesh with the support seat (11). The two components (10) to be welded are placed on the support seat (11), and the components (10) are pressed downward, so that the support seat (11) moves downward and drives the end of the pressing arm (144) close to the support seat (11) to rotate, so that the end of the pressing arm (144) away from the support seat (11) is close to the top of the component (10), and after the support seat (11) and the pressing arm (144) are separated, the pressing arm (144) quickly presses the component (10) from both sides of the component (10) to produce a slapping motion; When welding is completed, the support seat (11) is driven to move upward and reset rapidly, so that the component (10) on the support seat (11) vibrates, thereby reducing the stress of the component (10) after welding; The bottom surface of the support seat (11) is symmetrically fixedly connected with sliding rods (12), and the two sliding rods (12) are both provided with second teeth (121). The sliding rods (12) are slidably connected to the bottom plate (1), and a spring (13) is connected between the bottom surface of the support seat (11) and the bottom plate (1). A limit block (120) is fixedly connected to the side wall at the lower end of the sliding rod (12); A support plate (1223) is mounted on the base plate (1), a double-headed cylinder (1222) is mounted on the support plate (1223), ratchet components (122) are mounted on the execution ends at both ends of the double-headed cylinder (1222), an outer ring of the ratchet component (122) is provided with external teeth (1221) on the circumference, the external teeth (1221) and the second teeth (121) are meshed, when the support seat (11) moves downward, the slide bar (12) is locked by the ratchet component (122); when the double-headed cylinder (1222) drives the ratchet component (122) away, the support seat (11) quickly rebounds and resets by the spring (13); The first teeth (112) are connected to both side walls of the support seat (11), and a connecting arm (14) is symmetrically mounted on the bottom plate (1). A fixed shaft (141) is fixedly connected to the connecting arm (14), and a gear (142) is rotatably connected to the fixed shaft (141). The gear (142) is meshed with the first teeth (112), and one end of the pressure arm (144) is connected to the gear (142). A torsion spring (143) is fixedly connected between the gear (142) and the connecting arm (14).

2. The plasma welding device for automobile parts according to claim 1, characterized in that: It also includes a pressing plate (153) located above the two components (10), the pressing plate (153) being connected to the mounting plate (23) on the connecting plate (21), and the pressing plate (153) being used to cooperate with the pressing arm (144) to press the two components (10).

3. The plasma welding device for automobile parts according to claim 2, characterized in that: The support seat (11) is symmetrically fixedly connected to a connecting seat (15), the connecting seat (15) is fixedly connected to a guide rod (151), the pressing plate (153) is slidably connected to the guide rod (151), the guide rod (151) is sleeved with a tension spring (152), and the two ends of the tension spring (152) are respectively fixedly connected to the connecting seat (15) and the bottom surface of the pressing plate (153); A cylinder (24) is mounted on the connecting plate (21); an actuating end of the cylinder (24) is connected to a mounting plate (23); the mounting plate (23) is located below the connecting plate (21); a first magnetic block (231) is mounted on the bottom surface of the mounting plate (23); a second magnetic block (232) is mounted on the upper surface of the pressing plate (153); the first magnetic block (231) and the second magnetic block (232) are attracted to each other.

4. The plasma welding device for automobile parts according to claim 2 or 3, characterized in that: The pressing plate (153) comprises two transverse plates (1531) and an arc-shaped plate (1532) located between the two transverse plates (1531); a limited cleaning groove (1533) is provided on the arc-shaped plate (1532); and the pressing plate (153) is sleeved on the plasma welding gun (2) via the limited cleaning groove (1533).

5. The plasma welding device for automobile parts according to claim 4, characterized in that: Both ends of the limiting cleaning groove (1533) extend to locations close to the horizontal plate (1531).

6. The plasma welding device for automobile parts according to claim 4, characterized in that: An emptying groove (113) is provided on the clamping groove (111) of the support seat (11) below the plasma welding gun (2), and a through-groove (114) is provided on the support seat (11), wherein the through-groove (114) is connected to the emptying groove (113).

7. The plasma welding device for automobile parts according to claim 5, characterized in that: A cooling channel (1534) is provided in the transverse plate (1531) and the arc-shaped plate (1532) of the pressing plate (153) for cooling the welded component (10) during the welding process after the pressing plate (153) presses the component (10).

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