Plasma welding device for automobile parts

Abstract

The invention discloses a plasma welding device for automobile parts, and relates to the technical field of plasma welding devices. An automobile part plasma welding device comprises a plurality of bottom plates and further comprises a lifting driving part located on one sides of the bottom plates, a plasma welding gun is installed on a connecting plate which is installed on the lifting driving part, and the plasma welding gun is installed on the plasma welding gun. When a part is clamped and fixed, the space above the clamping groove can be increased, dust and foreign matter on the surface of the part can be cleaned when the part is fixed, meanwhile, a pressing plate can be driven to automatically press and fix the part, and the part is clamped and fixed by the pressing plate while the pressing plate presses and fixes the part. Foreign matters on the surface of the plasma welding gun can be cleaned; and meanwhile, cooling can be conducted while welding is achieved through the pressing plate, the plasma welding quality can be improved, and therefore compared with the prior art, more beneficial effects are achieved, and the welding quality and efficiency can be further improved.

Description

Technical Field

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

[0002] Plasma welding uses arc to heat gas to generate plasma, which melts metal materials and welding powder at high temperature to achieve welding; After searching, in the prior art, the announcement number CN118492587B, the announcement date 2024.11.19, the name is a plasma welding device for a workpiece, which belongs to the field of plasma welding technology, including: a linear drive, the execution end of which is provided with a lifting frame, and the bottom of the lifting frame is provided with a welding gun; a grinding frame, which is vertically slidably connected to the lifting frame through an elastic member, and the bottom of the grinding frame is rotatably connected to a hollow cylinder, and 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 push rods in groups of two are hinged between the two annular frames, and each two push rods in the same group are hinged to each other; a clamping mechanism, which is arranged on a welding table; the present application can use grinding to clean the welding powder on the pipe workpiece, reduce the probability of sand eyes on the weld of the pipe workpiece due to the solidification of the welding powder, and can adapt to the groove shape of the pipe workpiece, which is conducive to the cleaning of the welding powder in the groove; 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. For this reason, a plasma welding device for automobile parts is proposed to further improve the efficiency and quality of plasma welding of parts. Summary of the invention

[0003] 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 automobile parts that can overcome the above problems or at least partially solve the above problems.

[0004] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a plasma welding device for automobile parts, including multiple base plates, and also including: a lifting drive part, located on one side of the base 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, which is lifted and arranged on each of the base plates, and a clamping groove for limiting the parts is provided on the support seat; a pressure arm is respectively arranged on both sides of the support seat and meshed with the support seat, and the two parts to be welded are placed on the support seat, and the parts are pressed down, so that the support seat moves down and drives the end of the pressure arm close to the support seat to rotate, so that the end of the pressure arm away from the support seat is close to the top of the part, and after the support seat is separated from the pressure arm, the pressure arm quickly presses the parts from both sides of the parts and produces a slap; when the welding is completed, the support seat is driven to move up and reset quickly, so that the parts on the support seat vibrate, so as to reduce the stress of the parts after welding.

[0005] Preferably, sliding rods are symmetrically fixedly connected to the bottom surface of the support seat, and second teeth are provided on both sliding rods. The sliding rods are slidably connected to the bottom plate, and a spring is connected between the bottom surface of the support seat and the bottom plate. A limiting block is fixedly connected to the side wall at the lower end of the sliding rod.

[0006] Preferably, a support plate is installed on the base 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 periphery of the ratchet part, the external teeth and the second teeth are meshed with each other, when the support seat moves downward, the sliding rod is locked by the ratchet part; when the double-headed cylinder drives the ratchet part away, the support seat quickly rebounds and resets by the spring.

[0007] Preferably, first teeth are connected to both side walls of the support seat, connecting arms are symmetrically installed on the base plate, a fixed shaft is fixedly connected to the connecting arm, a gear is rotatably connected to the fixed shaft, the gear is meshed with the first teeth, one end of the pressure arm is connected to the gear, and a torsion spring is fixedly connected between the gear and the connecting arm.

[0008] Furthermore, it also includes a pressing plate located above the two components, 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 press the two components.

[0009] Preferably, a connecting seat is symmetrically fixedly connected to the support seat, a guide rod is fixedly connected to the connecting seat, the pressure plate is slidably connected to the guide rod, a tension spring is sleeved on the guide rod, and the two ends of the tension spring are respectively fixedly connected to the connecting seat and the bottom surface of the pressure plate; a cylinder is installed on the connecting plate, and the execution end of the cylinder is connected to the mounting plate, and the mounting plate is located below the connecting plate, a first magnetic block is installed on the bottom surface of the mounting plate, and a second magnetic block is installed on the upper surface of the pressure plate, and the first magnetic block and the second magnetic block are adsorbed to each other.

[0010] Furthermore, the pressing plate includes two transverse plates and an arc-shaped plate located between the two transverse plates, the arc-shaped plate is provided with a limiting cleaning groove, and the pressing plate is sleeved on the plasma welding gun through the limiting cleaning groove.

[0011] Furthermore, both ends of the position-limiting cleaning groove extend to locations close to the transverse plate respectively.

[0012] Furthermore, an emptying groove is provided on the clamping groove of the support seat below the plasma welding gun, and a through-groove is provided on the support seat, and the through-groove is communicated with the emptying groove.

[0013] Furthermore, cooling channels are provided in the transverse plate and the arc-shaped plate of the pressing plate, so as to cool the welded parts during the welding process after the pressing plate presses the parts.

[0014] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: 1. The plasma welding device for automobile parts can quickly limit, align, and clamp the parts to be welded, and by increasing the space above the support seat, it is convenient to place the parts in the clamping groove on the support seat, and by pressing the support seat downward, the pressure arm can quickly clamp the parts from both sides; 2. In the plasma welding device for automobile parts, when the first tooth on the support seat is separated from the gear, the pressure arm will also produce a slapping action on the part when it contacts the part, which is conducive to shaking off foreign matter such as dust on the surface of the part, further improving the quality of plasma welding; and after welding is completed, when the support seat moves up and resets, the limit block collides with the bottom plate, causing the welded part to vibrate and shake, which can shake off the residual welding powder on the part on the one hand, and on the other hand, can cause the part to vibrate and shake, so as to further eliminate internal stress and improve the quality of the welded part; 3. The plasma welding device for automobile parts, by sleeve-arranging the pressing plate on the plasma welding gun, when the support seat moves downward to pull the pressing plate downward, the inner wall of the limit cleaning groove can automatically remove the welding slag adhered to the plasma welding gun, which can further prevent the pollutants (such as oxides, splashing metal particles) on the surface of the plasma welding gun (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 gun 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, 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, thereby helping to improve the quality of plasma welding; 4. In the plasma welding device for automobile parts, the arc plate in the pressure plate will block the bottom of the limit cleaning groove after contacting the parts, 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 a gathering effect on the welding powder and can prevent the welding powder from sliding off the parts, resulting in a reduction of the welding powder and affecting the welding quality. 5. The plasma welding device for automobile parts injects a cooling medium into the cooling channel, which may be cooling water or cooling gas. When the pressing plate presses the parts, cooling is performed while welding, thereby reducing the heat-affected zone, reducing the degree of grain coarsening, and improving the mechanical properties of the weld and the parent material; and reducing welding deformation, which is particularly suitable for thin-walled parts or precision structures, and reducing the cost of correcting parts after welding; at the same time, the setting of the cooling channel can also quickly cool the molten pool to shorten the solidification time, 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; Therefore, when clamping and fixing parts, the device can not only increase the space above the clamping groove, but also clean the dust and foreign matter on the surface of the parts when fixing the parts, and can also drive the pressure plate to automatically press and fix the parts, and the pressure plate can also clean foreign matter on the surface of the plasma welding gun while pressing and fixing; 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 existing technology, it has more beneficial effects and can further improve the welding quality and efficiency.

[0015] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In the attached picture: Figure 1 This is a schematic diagram of the three-dimensional structure of a plasma welding device for automobile parts proposed by the present invention; Figure 2 This is a front view of a plasma welding device for automobile parts proposed by the present invention; Figure 3 A top view of a plasma welding device for automobile parts proposed by the present invention; Figure 4 This is a structural schematic diagram of a support base and a pressure plate of a plasma welding device for automobile parts proposed by the present invention; Figure 5 A plasma welding device for automobile parts proposed by the present invention Figure 4 The structural diagram at A in the middle; Figure 6 This is a structural schematic diagram of a slide bar and a ratchet wheel of a plasma welding device for automobile parts proposed by the present invention; Figure 7 This is a schematic diagram of the structure of a limited cleaning tank of a plasma welding device for automobile parts proposed by the present invention; Figure 8 This is a schematic structural diagram of a pressure arm, a gear, and a first tooth of a plasma welding device for automobile parts proposed by the present invention; Fig. 9 A schematic structural diagram of a ratchet wheel, a slide bar and a second tooth of a plasma welding device for automobile parts proposed by the present invention; Fig.10 The present invention provides a schematic structural diagram of a cooling channel of a plasma welding device for automobile parts.

[0017] In the figure: 1, bottom plate; 10, parts; 11, support seat; 111, clamping groove; 112, first tooth; 113, emptying groove; 114, through groove; 12, slide bar; 120, limit block; 121, second tooth; 122, ratchet; 1221, external tooth; 1222, double-headed cylinder; 1223, support plate; 13, spring; 14, connecting arm; 141, fixed shaft; 142, gear; 143 , torsion spring; 144, pressure arm; 145, roller; 15, connecting seat; 151, guide rod; 152, tension spring; 153, pressure plate; 1531, cross plate; 1532, arc plate; 1533, limit cleaning groove; 1534, cooling channel; 16, support leg; 2, plasma welding gun; 21, connecting plate; 22, lifting drive unit; 23, mounting plate; 231, first magnetic block; 232, second magnetic block; 24, cylinder. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the 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.

[0019] The following is combined with Figure 1 -Attached Fig.10 , describes in detail the technical solutions provided by each embodiment of the present invention.

[0020] Example 1: Reference Figure 1-Figure 10 A plasma welding device for automobile parts includes a plurality of base plates 1, and also includes: a lifting drive unit 22, located on one side of the base plate 1 (it should be understood that the lifting drive unit 22 is installed on a bracket, not suspended. The lifting drive unit 22 can adopt a screw rod, a cylinder component, a hydraulic rod, an electric telescopic rod and other components capable of reciprocating linear motion), a connecting plate 21 is installed on the lifting drive unit 22, and a plasma welding gun 2 is installed on the connecting plate 21; a support seat 11, which is lifted and arranged on each base plate 1, and a clamping groove 111 for limiting a component 10 is provided on the support seat 11; a pressing arm 144, which is respectively arranged on both sides of the support seat 11, and a roller 14 is rotatably connected to the pressing arm 144. 5, used to reduce the friction with the component 10 when the component 10 rotates, and mesh with the support seat 11, place the two components 10 to be welded on the support seat 11, and press the component 10 downward, so that the support seat 11 moves downward and drives the end of the pressure arm 144 close to the support seat 11 to rotate, so that the end of the pressure 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 pressure arm 144 are separated, the pressure arm 144 quickly presses the component 10 from both sides of the component 10 and produces a slap; when the welding is completed, the support seat 11 is driven to move up and reset quickly, so that the component 10 on the support seat 11 vibrates, so as to reduce the stress of the component 10 after welding; The bottom surface of the support seat 11 is symmetrically fixedly connected with slide bars 12, and the two slide bars 12 are both provided with second teeth 121. The slide bars 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 slide bar 12; A support plate 1223 is installed on the bottom plate 1, and a double-headed cylinder 1222 is installed on the support plate 1223. Ratchet pieces 122 are installed on the execution ends of both ends of the double-headed cylinder 1222. External teeth 1221 are arranged on the outer circumference of the outer ring of the ratchet piece 122. 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 piece 122; when the double-headed cylinder 1222 drives the ratchet piece 122 away, the support seat 11 quickly rebounds and resets through the spring 13; The first teeth 112 are connected to both side walls of the support seat 11, and the connecting arms 14 are symmetrically installed on the bottom plate 1. The connecting arms 14 are fixedly connected to a fixed shaft 141, 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; When the device is in use, the support legs 16 installed at the bottom of the base plate 1 can facilitate the installation of the device; During the plasma welding process, two parts 10 to be welded are placed on corresponding support seats 11 respectively, and the ends of the two parts 10 are aligned and placed on one of the support seats 11, and then the parts 10 are pressed down to move the support seat 11 downward; The symmetrically arranged pressing arms 144 are initially extended outward (refer to Figure 6 As shown), this makes the space above the support seat 11 large, and compared with the prior art, it is more convenient to place the component 10 on the support seat 11. During the downward movement of the support seat 11, the support seat 11 squeezes the spring 13, and the second teeth 121 on the slide bar 12 engage to drive the outer teeth 1221 of 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 Fig. 9 ), and under the thrust of the spring 13, the support seat 11 will not move upward due to the cooperation with the ratchet member 122.

[0021] In the process of the support base 11 moving downward, the first tooth 112 meshes with the gear 142, driving the pressing arm 144 to rotate, so that the length 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 the 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 relaxation and force storage state, and when the support seat 11 reaches the downward travel, the first tooth 112 will be separated from the gear 142. At this time, the pressing arm 144 is driven by the torsion spring 143 to quickly press the component 10, and press from both sides of the component 10, thereby limiting the component 10 and effectively avoiding displacement during the plasma welding process, thereby improving the quality and efficiency of plasma welding; It should be understood that after the gear 142 on the pressing arm 144 is disengaged from the first tooth 112 on the support seat 11, the torsion spring 143 is in a force-applying state, that is, at this time, the pressing arm 144 exerts a certain downward pressure on the component 10, thereby achieving a pressing effect on the component 10; The device adopts the above method to quickly limit, align, and clamp the parts 10 to be welded, and by increasing the space above the support seat 11, it is convenient to place the parts 10 in the clamping groove 111 on the support seat 11, and by pressing the support seat 11 downward, the pressure arm 144 can quickly clamp the parts 10 from both sides. In addition, when the first tooth 112 on the support seat 11 is disengaged from the gear 142, the pressure arm 144 will also produce a slapping action on the component 10 when it contacts the component 10, which is conducive to shaking off foreign matter such as dust on the surface of the component 10 and further improving the quality of plasma welding.

[0022] After the component 10 is fixed on the support seat 11, the plasma welding gun 2 is driven to move downward, and then the component 10 is driven to rotate by an external driving device to achieve the welding operation.

[0023] After welding is completed, the plasma welding gun 2 is moved away, and the double-headed cylinder 1222 drives the ratchet 122 away from the slide bar 12, so that the support seat 11 is no longer restricted and quickly moves upward under the push of the spring 13. The support seat 11 limits the upward movement through the limit block 120 on the slide bar 12, and the support seat 11 causes the welded component 10 to vibrate and shake after moving upward. On the one hand, it can shake off the residual welding powder on the component 10, and on the other hand, it can cause the component 10 to vibrate and shake, so as to further eliminate internal stress and improve the quality of the welded component 10.

[0024] Example 2: Reference Figure 1-Figure 10 , a plasma welding device for automobile parts, which is basically the same as that of embodiment 1, and further includes: a pressing plate 153 located above the two parts 10, the pressing plate 153 is connected to the mounting plate 23 on the connecting plate 21, and the pressing plate 153 is used to cooperate with the pressing arm 144 to press the two parts 10; The support seat 11 is symmetrically fixedly connected with a connecting seat 15, a guide rod 151 is fixedly connected with the connecting seat 15, a pressing plate 153 is slidably connected with the guiding rod 151, a tension spring 152 is sleeved on the guiding rod 151, and two ends of the tension spring 152 are respectively fixedly connected with the connecting seat 15 and the bottom surface of the pressing plate 153; a cylinder 24 is installed on the connecting plate 21, and the execution end of the cylinder 24 is connected with the mounting plate 23, the mounting plate 23 is located below the connecting plate 21, a first magnetic block 231 is installed on the bottom surface of the mounting plate 23, and a second magnetic block 232 is installed on the upper surface of the pressing plate 153, and the first magnetic block 231 and the second magnetic block 232 are adsorbed to each other; When the support base 11 moves downward, the pressing plate 153 is blocked by the fixing block at the top of the guide rod 151 and is separated from the first magnetic block 231. The pressing plate 153 is pressed between the two components 10 under the tension of the tension spring 152 to further fix the components 10. At the same time, when the pressing plate 153 is separated from the first magnetic block 231 , the pressing plate 153 will hit the component 10 under the pulling of the tension spring 152 , so as to further clean the dust and foreign matter on the component 10 .

[0025] When welding is completed, when driving the support seat 11 to move up and reset, the cylinder 24 is first used to push the mounting plate 23 downward, and the first magnetic block 231 is again attracted to the second magnetic block 232 on the pressure plate 153, and then the mounting plate 23 is pulled upward by the cylinder 24 to separate the pressure plate 153 from the component 10, and then the plasma welding gun 2 is moved up to create a larger distance between the component 10, and then the double-headed cylinder 1222 drives the ratchet part 122 and the slide bar 12 to separate the support seat 11 from the slide bar 12, so that the support seat 11 is reset under the thrust of the spring 13, and when the ratchet part 122 is separated from the slide bar 12, the lifting drive part 22 synchronously drives the plasma welding gun 2 to move up and reset, so that when the support seat 11 is moved up and reset, the component 10 will not come into contact with the plasma welding gun 2 and the pressure plate 153, so that the upward movement of the support seat 11 can cause the component 10 to vibrate.

[0026] Example 3: Reference 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; 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; 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.

[0027] Both ends of the limiting cleaning groove 1533 extend to the vicinity of the horizontal plate 1531 respectively; 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.

[0028] 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; The emptying groove 113 can facilitate dust and foreign matter on the component 10 that contacts the clamping groove 111 to fall into the emptying groove 113 when the component 10 is tapped, and can be conveniently discharged from the through groove 114 .

[0029] Example 5: Reference Fig.10 , a plasma welding device for automobile parts, which is basically the same as that of embodiment 4, and furthermore: a cooling channel 1534 is provided in the horizontal plate 1531 and the arc plate 1532 of the pressing plate 153, so as to cool the welded parts 10 during the welding process after the pressing plate 153 presses the parts 10; By injecting a cooling medium into the cooling channel 1534, the cooling medium may be cooling water or cooling gas. When the pressing plate 153 presses the parts 10, cooling is performed while welding, thereby reducing the heat-affected zone, reducing the degree of grain coarsening, and improving the mechanical properties of the weld and the parent material; and reducing welding deformation, which is particularly suitable for thin-walled parts or precision structures, and reducing the cost of correcting the parts 10 after welding; at the same time, the setting of the cooling channel 1534 can also quickly cool and 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; 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 clean foreign matter on the surface of the plasma welding gun 2 while pressing and fixing; at the same time, the pressure plate 153 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.

[0030] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the present invention can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution 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 quickly move upward and reset, so that the component (10) on the support seat (11) vibrates, thereby reducing the stress of the component (10) after welding.

2. The plasma welding device for automobile parts according to claim 1, characterized in that: The bottom surface of the support seat (11) is symmetrically fixedly connected to 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 limiting block (120) is fixedly connected to the side wall at the lower end of the sliding rod (12).

3. The plasma welding device for automobile parts according to claim 2, characterized in that: 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), and external teeth (1221) are arranged on the outer circumference of the outer ring of the ratchet component (122), and the external teeth (1221) and the second teeth (121) are meshed with each other. When the support seat (11) moves downward, the slide rod (12) is locked by a ratchet member (122); When the double-headed cylinder (1222) drives the ratchet member (122) to move away, the support seat (11) quickly rebounds and resets via the spring (13).

4. The plasma welding device for automobile parts according to claim 3, characterized in that: 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).

5. 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).

6. The plasma welding device for automobile parts according to claim 5, 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.

7. The plasma welding device for automobile parts according to claim 5 or 6, 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).

8. The plasma welding device for automobile parts according to claim 7, characterized in that: Both ends of the limiting cleaning groove (1533) extend to locations close to the horizontal plate (1531).

9. The plasma welding device for automobile parts according to claim 7, 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).

10. The plasma welding device for automobile parts according to claim 7, 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).

Images