Automobile wheel cover welding equipment and welding method

Abstract

The invention discloses automobile wheel cover welding equipment and a welding method. The automobile wheel cover welding equipment comprises a base, a sliding positioning seat is installed on the base, a positioning block used for positioning a wheel cover sheet metal part is installed on the positioning seat, a swingable fixed pressing block is installed on the positioning seat, and the fixed pressing block corresponds to the positioning block; and the welding set is provided with a stabilizing frame, the stabilizing frame is provided with a spot welding gun capable of swinging, and a pressing wheel used for pressing the wheel cover sheet metal part is arranged on the side of the spot welding gun. The device has the beneficial effects that the wheel cover sheet metal part placed on the positioning block is fixed through the electromagnetic attraction block, operation is easy and convenient, and the using effect is good; during welding, the pressing wheels are tightly attached to the wheel cover sheet metal parts, the wheel cover sheet metal parts on the two sides of a welding spot are in a pressed state, and it is guaranteed that the welding effect is good; the welding equipment is high in automation degree and good in using effect.

Description

Technical Field

[0001] This invention relates to the field of welding-related technologies, and in particular to a welding equipment and welding method for automobile wheel arches. Background Technology

[0002] Wheel arches (also known as wheel covers) are an important component of a car body. Located above the wheels, they primarily serve to block mud, water, and gravel kicked up by the wheels during driving, protecting the internal structure of the vehicle. They also optimize airflow under the vehicle, reduce wind resistance and noise, and enhance the vehicle's appearance. Wheel arches are typically made of sheet metal (such as steel or aluminum alloy) or non-metallic materials (such as plastic). Metal wheel arches, due to their high structural strength and weather resistance, are widely used in mid-to-high-end models and in areas bearing critical structural loads.

[0003] Welding is one of the key assembly processes in the manufacturing of metal wheel arches. Wheel arch sheet metal parts are usually assembled from multiple molded parts such as the main body and accessories. These components need to be welded to form a robust integral structure to ensure that it can withstand the complex loads and vibrations during vehicle operation and meet the stringent requirements of vehicle safety and durability.

[0004] Existing welding equipment involves placing the wheel cover sheet metal parts onto the corresponding fixtures and then manually spot welding them. This operation is highly dependent on the worker's skill level and condition, and is prone to problems such as weld point position deviation and poor welding consistency. At the same time, it is labor-intensive and inefficient.

[0005] To avoid the above problems, a welding device needs to be designed to improve welding results and usability. Summary of the Invention

[0006] The present invention aims to overcome the shortcomings of the existing technology in terms of poor welding effect, and provides a convenient and effective welding equipment and method for automotive wheel arches.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an automotive wheel arch welding device, comprising: A base, on which a slidable positioning seat is mounted, on which a positioning block for positioning the sheet metal part of the wheel cover is mounted, and on which a swingable fixing block is mounted, the fixing block corresponding to the positioning block; The welding assembly is equipped with a stabilizing frame, on which a swingable spot welding gun is mounted. A clamping wheel for clamping the sheet metal parts of the welding gun is provided on the side of the spot welding gun.

[0008] This welding equipment includes a base and a welding assembly. The base is mounted on a worktable. A positioning seat is installed on the base, and this positioning seat is movable. A positioning block is mounted on the positioning seat, and the positioning block is machined to match the positioning surface of the wheel cover sheet metal. This positioning block is used to support and position the wheel cover sheet metal part. Simultaneously, a fixing block is also installed on the positioning seat. This fixing block, through its swinging motion, can press the wheel cover sheet metal placed on the positioning block, ensuring the accurate positioning of the wheel cover sheet metal and preventing displacement during welding. The welding assembly includes a stabilizing frame mounted on the base. A swingable spot welding gun is mounted on the stabilizing frame. Through its swinging motion, electric welding operations can be performed on the curved edges of the wheel cover sheet metal. This structure makes the welding operation simple and convenient, and ensures accurate weld point positioning. Meanwhile, a clamping roller is provided on the side of the spot welding gun. The clamping roller is arranged on both sides of the spot welding gun. When the spot welding gun is welding, the clamping roller can be used to press down on the wheel cover sheet metal, so that the wheel cover sheet metal is in a tight state during welding, ensuring good welding effect.

[0009] Preferably, the base is provided with a guide groove, a telescopic cylinder is installed on the inner wall of the end side of the guide groove, a guide block is provided on the bottom surface of the positioning seat, the guide block is embedded in the guide groove, and the telescopic end of the telescopic cylinder is connected to the guide block. The system includes a guide groove on the upper surface of the base, a stop block inside the guide groove, and a telescopic cylinder arranged parallel to the guide groove. A guide block is also located on the bottom surface of the positioning seat. Both the guide groove and the guide block are rectangular grooves, with the guide block embedded within the guide groove. The telescopic end of the telescopic cylinder is connected to the guide block. The telescopic movement of the cylinder causes the positioning seat to move linearly. Due to the cooperation of the guide block and the guide groove, after the wheel cover sheet metal is placed, the positioning seat can be moved to the area below the spot welding gun. The stop block inside the guide groove ensures the positioning seat reaches the designated position when it contacts the guide block, allowing subsequent spot welding operations to be completed. This structure guarantees accurate positioning, simple and convenient operation, good welding results, and improves the overall performance of the equipment.

[0010] Preferably, the positioning block has an embedding groove in the middle of its arc-shaped surface, and an electromagnetic attractor is installed in the embedding groove. An electromagnetic controller is connected to the electromagnetic attractor. The positioning block has an arc-shaped surface that is in close contact with the positioning surface of the wheel cover sheet metal part. The embedding groove, which is rectangular, is located on the arc-shaped surface of the positioning block. An electromagnetic attractor is installed within the groove, and its end face is the same as the positioning surface of the wheel cover sheet metal part. The electromagnetic attractor is a block designed based on the principle of electromagnetism. The electromagnetic controller is connected to the electromagnetic attractor, which controls the electromagnetic attractor to generate magnetism when energized, thus enabling the electromagnetic attractor to attract the wheel cover sheet metal part. This ensures stable positioning of the wheel cover sheet metal part after it is placed on the positioning block, guaranteeing good welding results during welding and improving the overall performance of the welding equipment.

[0011] Preferably, a caliper is mounted on the positioning seat, and the fixing block is connected to the caliper. A rubber layer is provided on the end face of the fixing block. Specifically, the caliper on the positioning seat is a general-purpose tooling clamp caliper. The fixing block is mounted on the clamping end of the caliper, and the rubber layer on its end face protects the wheel cover sheet metal parts. This elastic rubber layer allows for stress release between the wheel cover sheet metal parts during welding, thereby improving the welding effect and ensuring good performance of the welding equipment.

[0012] Preferably, the top of the stabilizer is provided with a mounting base, and the bottom surface of the mounting base is provided with a mounting groove. A telescopic hydraulic cylinder is installed in the mounting groove, and a mounting plate is installed in the mounting groove. The telescopic hydraulic cylinder is connected to the mounting plate, and the spot welding gun is connected to the mounting plate. The stabilizer is an L-shaped frame connected to a base. A mounting base is provided at the top of the stabilizer, and a mounting groove is provided on the bottom surface of the mounting base. A telescopic hydraulic cylinder is installed inside the mounting groove. The mounting plate is inserted into the mounting groove, and the telescopic hydraulic cylinder is connected to the mounting plate. The spot welding gun is mounted on the mounting plate. This structure allows the mounting plate to move longitudinally via the telescopic hydraulic cylinder. This structure allows for length adjustment of the mounting plate, thereby adjusting the position of the spot welding gun to meet the welding operation requirements of the wheel cover sheet metal parts. This structure improves the efficiency of the welding equipment.

[0013] Preferably, an electric telescopic rod is mounted on the mounting plate, and a rack is mounted on the extended end of the electric telescopic rod. A drive shaft and a driven shaft are mounted on the mounting plate. The drive shaft is located on the upper end of the driven shaft, and drive gears are mounted on both ends of the drive shaft. A swing block is mounted on the driven shaft, and a driven gear is connected to the outer end of the driven shaft. The drive gear located on the rear side of the mounting plate meshes with the rack, and the drive gear located on the front side of the mounting plate meshes with the driven gear. The welding gun is mounted below the swing block. The system includes an electric telescopic rod mounted on the rear side of the mounting plate. Two holes are provided on the mounting plate, housing a drive shaft and a driven shaft, which are longitudinally aligned with the drive shaft positioned above the driven shaft. Both ends of the drive shaft extend out of the mounting plate and are fitted with drive gears. A rack is mounted at the telescopic end of the electric telescopic rod, meshing with the drive gear on the rear side of the drive shaft. The telescopic movement of the electric telescopic rod drives the drive shaft to rotate. The drive gear on the front side of the mounting plate meshes with the driven gear on the driven shaft, thus rotating the driven shaft. A swing block is mounted on the driven shaft, and the spot welding gun is mounted on the swing block. This structure allows the telescopic movement of the electric telescopic rod to control the swing of the spot welding gun, enabling spot welding of the wheel cover sheet metal parts. This structure improves the automation of the spot welding gun, simplifies operation, and enhances the effectiveness of the welding equipment.

[0014] Preferably, a guide post is provided on the rear sidewall of the swing block, and a semi-circular guide groove is provided on the front end face of the mounting plate, with the guide post embedded in the guide groove. Specifically, the guide post on the rear sidewall of the swing block and the guide groove on the front end face of the mounting plate, with the guide post being cylindrical and the guide groove being semi-circular, ensure stable swing of the swing block, thereby guaranteeing stable spot welding during welding operations and improving the effectiveness of the welding equipment.

[0015] Preferably, the lower end of the swing block is connected to an electric telescopic rod II, and the telescopic end of the electric telescopic rod II is connected to the spot welding gun. The electric telescopic rod II, located at the lower end of the swing block and connected to the spot welding gun, controls the spot welding operation by extending and retracting the electric telescopic rod II. This design is simple, convenient, and effective.

[0016] Preferably, a fixing block is provided on the side wall of the telescopic end of the second electric telescopic pole. The fixing block is arranged perpendicularly to the second electric telescopic pole, and a gas support rod is connected to the fixing block. The end of the gas support rod is connected to a pressure wheel. Specifically, the fixing block is installed on both sides of the second electric telescopic pole, and is arranged perpendicularly to it. A gas support rod is installed at the lower end of the fixing block, and the pressure wheel is installed at the lower end of the gas support rod via a mounting shaft. The pressure wheel can contact and press against the sheet metal part of the wheel cover, so that during spot welding, both ends of the weld point are pressed by the pressure wheel, ensuring the welding effect and improving the usability of the welding equipment.

[0017] This invention also describes a method for welding automotive wheel arches, the steps of which are as follows: S1. Place the wheel cover sheet metal part on the positioning block, and push the caliper to drive the fixing block to press onto the wheel cover sheet metal part; S2. The telescopic cylinder moves the base toward the spot welding gun; S3. The electric telescopic rod 1 is used to extend and retract, which drives the spot welding gun to swing, so that the spot welding gun can spot weld the wheel cover sheet metal parts.

[0018] First, the wheel arch sheet metal part includes a main body and accessories. These are placed onto the corresponding positioning blocks. Activating the electromagnetic suction block ensures the wheel arch sheet metal part is firmly attached to the positioning block. Then, by manually pushing or using a cylinder to drive the clamps, the fixing block is pressed onto the wheel arch sheet metal part, thus securing it. Next, a telescopic cylinder moves the base towards the spot welding gun, stopping at the target position, so that the area of ​​the wheel arch sheet metal part to be spot welded is positioned below the spot welding gun. Next, the telescopic hydraulic cylinder moves down, adjusting the height of the spot welding gun so that the clamping wheel mounted on the second electric telescopic rod contacts and presses against it. Then, the first electric telescopic rod extends and retracts. This extension and retraction is controlled by the electronic control system. The angle of the spot welding gun's swing is controlled by the extension and retraction, thereby determining the position of the weld point and ensuring that the welding position of the spot welding gun meets the process requirements. When the spot welding gun swings, the clamping wheel is in close contact with the wheel cover sheet metal part. This structure ensures that the wheel cover sheet metal parts on both sides of the weld point are in a pressed state during spot welding, ensuring the welding effect, making the operation simple and convenient, and improving the use effect of the welding equipment.

[0019] The beneficial effects of this invention are: the wheel cover sheet metal parts placed on the positioning block are fixed by the electromagnetic suction block, which is simple and convenient to operate and has good performance; during welding, the clamping wheel is in close contact with the wheel cover sheet metal parts, and the wheel cover sheet metal parts on both sides of the weld point are in a clamped state, ensuring good welding effect; this welding equipment has a high degree of automation and good performance. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a cross-sectional view of the positioning block in this invention; Figure 4 This is a partial view of the rear side of the mounting plate in this invention; Figure 5 yes Figure 2 Enlarged view at point A in the middle; Figure 6 This is a partial view of the spot welding gun in this invention.

[0021] In the attached diagram: 1. Base, 2. Positioning seat, 3. Stabilizer, 4. Positioning block, 5. Fixing block, 6. Spot welding gun, 7. Pressure wheel, 10. Guide groove, 11. Telescopic cylinder, 20. Guide block, 21. Caliper, 30. Mounting seat, 31. Mounting groove, 32. Telescopic hydraulic cylinder, 33. Mounting plate, 34. Electric telescopic rod one, 35. Rack, 36. Drive shaft, 37. Driven shaft, 38. Swing block, 39. Guide groove, 40. Embedded groove, 41. Electromagnetic suction block, 50. Rubber layer, 360. Drive gear, 370. Driven gear, 380. Guide column, 381. Electric telescopic rod two, 382. Fixing block, 383. Gas support rod. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components illustrated in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0025] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0026] Example 1, as Figure 1-6 As shown, an automotive wheel arch welding device includes: A base 1, on which a sliding positioning seat 2 is mounted, on which a positioning block 4 for positioning the sheet metal part of the wheel cover is mounted, and on which a swingable fixing block 5 is mounted, the fixing block 5 corresponding to the positioning block 4; The welding assembly is equipped with a stabilizing frame 3, which is fitted with a swingable spot welding gun 6. A clamping wheel 7 for clamping the sheet metal parts of the wheel cover is provided on the side of the spot welding gun 6.

[0027] The bottom of the base 1 is provided with a guide groove 10, and a telescopic cylinder 11 is installed on the inner wall of the end side of the guide groove 10. The bottom surface of the positioning seat 2 is provided with a guide block 20, which is embedded in the guide groove 10. The telescopic end of the telescopic cylinder 21 is connected to the guide block 20.

[0028] An embedding groove 40 is provided in the middle of the arc-shaped surface of the positioning block 4, and an electromagnetic suction block 41 is provided in the embedding groove 40. An electromagnetic controller is connected to the outside of the electromagnetic suction block 41.

[0029] A caliper 21 is installed on the positioning base 2, and the fixing block 5 is connected to the caliper 21. A rubber layer 50 is provided on the end face of the fixing block 5.

[0030] The top of the stabilizer 3 is provided with a mounting base 30, and the bottom surface of the mounting base 30 is provided with a mounting groove 31. A telescopic hydraulic cylinder 32 is installed in the mounting groove 31, and a mounting plate 33 is installed in the mounting groove 31. The telescopic hydraulic cylinder 32 is connected to the mounting plate 33, and the spot welding gun 6 is connected to the mounting plate 33.

[0031] An electric telescopic rod 34 is mounted on the mounting plate 33. A rack 35 is mounted on the extended end of the electric telescopic rod 34. A drive shaft 36 and a driven shaft 37 are mounted on the mounting plate 33. The drive shaft 36 is positioned above the driven shaft 37. Drive gears 360 are mounted on both ends of the drive shaft 36. A swing block 38 is mounted on the driven shaft 37, and a driven gear 370 is connected to the outer end of the driven shaft 37. The drive gear 360, positioned on the rear side of the mounting plate 33, meshes with the rack 35. The drive gear 360, positioned on the front side of the mounting plate 33, meshes with the driven gear 370. The spot welding gun 6 is mounted below the swing block 38.

[0032] A guide post 380 is provided on the rear side wall of the swing block 38, and a semi-circular guide groove 39 is provided on the front end face of the mounting plate 33, and the guide post 380 is embedded in the guide groove 39.

[0033] The lower end of the swing block 38 is connected to an electric telescopic rod 381, and the telescopic end of the electric telescopic rod 381 is connected to the spot welding gun 6.

[0034] The telescopic end sidewall of the electric telescopic rod 381 is provided with a fixing block 382. The fixing block 382 is arranged perpendicularly to the electric telescopic rod 381. A gas support rod 383 is connected to the fixing block 382. The end of the gas support rod 383 is connected to the pressure wheel 7.

[0035] The principle of this welding equipment is as follows: This welding equipment includes a base 1 and a welding assembly. The base 1 is mounted on a worktable. A positioning seat 2 is mounted on the base 1 and can move on it. A positioning block 4 is mounted on the positioning seat 2, and the positioning block 4 is machined to match the positioning surface of the wheel cover sheet metal. This positioning block 4 is used to support and position the wheel cover sheet metal. Simultaneously, a fixing block 5 is also mounted on the positioning seat 2. This fixing block 5, through its swinging motion, can press the wheel cover sheet metal placed on the positioning block 4, ensuring the accurate positioning of the wheel cover sheet metal and preventing displacement during welding. The welding assembly includes a stabilizing frame 3, which is mounted on the base 1. A swingable spot welding gun 6 is mounted on the stabilizing frame 3. Through its swinging motion, electric welding can be performed on the curved edge of the wheel cover sheet metal. This structure makes the welding operation simple and convenient, and ensures accurate weld point positioning. Meanwhile, a pressure roller 7 is provided on the side of the spot welding gun 6. The pressure roller 7 is arranged on both sides of the spot welding gun 6. When the spot welding gun 6 is welding, the pressure roller 7 can be used to press down the wheel cover sheet metal, so that the wheel cover sheet metal is in a tight state during welding, ensuring good welding effect.

[0036] The base 1 has a guide groove 10 on its upper surface, a stop block inside the guide groove 10, and a telescopic cylinder 11 inside the guide groove 10. The telescopic cylinder 11 is arranged parallel to the guide groove 10. A guide block 20 is provided on the bottom surface of the positioning seat 2. Both the guide groove 10 and the guide block 20 are rectangular grooves. The guide block 20 is embedded in the guide groove 10. The telescopic end of the telescopic cylinder 11 is connected to the guide block 20. The telescopic movement of the telescopic cylinder 11 can drive the positioning seat 2 to move linearly. Due to the cooperation of the guide block 20 and the guide groove 10, after the wheel cover sheet metal is placed, the positioning seat 2 can be moved to the bottom of the spot welding gun 6 by moving the positioning seat 2. Because a stop block is provided in the guide groove 10, when the guide block 20 contacts the stop block, the positioning seat 2 moves to the designated position, and then the subsequent spot welding operation is completed. This structure can ensure accurate positioning, simple and convenient operation, good welding effect, and improve the use effect of the equipment.

[0037] The positioning block 4 has an arc-shaped surface that is in close contact with the positioning surface of the wheel cover sheet metal part. An embedding groove 40 is provided on the arc-shaped surface of the positioning block 4. The embedding groove 40 is a rectangular groove, and an electromagnetic suction block 41 is embedded in it. The end face of the electromagnetic suction block 41 is the same as the positioning surface of the wheel cover sheet metal part. The electromagnetic suction block 41 is a block designed based on the principle of electromagnetism. The electromagnetic suction block 41 is connected to an external electromagnetic controller. The function of the electromagnetic controller is to control the electromagnetic suction block 41 to generate magnetism after being energized, so that the electromagnetic suction block 41 can attract the wheel cover sheet metal part. This ensures that the wheel cover sheet metal part can be stably positioned after being placed on the positioning block 4, ensuring good welding effect during welding, and thus improving the use effect of the welding equipment.

[0038] The positioning seat 2 is equipped with a caliper 21, which is a general-purpose tooling clamp caliper 21. The fixing block 5 is installed on the clamping end of the caliper 21. A rubber layer 50 is provided on the end face of the fixing block 5. The rubber layer 50 can protect the wheel cover sheet metal parts. At the same time, the rubber layer 50 is elastic. This structure can release the stress between the wheel cover sheet metal parts during welding, thereby improving the welding effect and ensuring the good performance of the welding equipment.

[0039] The stabilizer 3 is an L-shaped frame connected to the base 1. A mounting seat 30 is provided on the top of the stabilizer 3, and a mounting groove 31 is provided on the bottom surface of the mounting seat 30. A telescopic hydraulic cylinder 32 is installed inside the mounting groove 31. A mounting plate 33 is inserted into the mounting groove 31, and the telescopic hydraulic cylinder 32 is connected to the mounting plate 33. The spot welding gun 6 is mounted on the mounting plate 33. This structure drives the mounting plate 33 to move longitudinally through the telescopic hydraulic cylinder 32. This structure can adjust the length of the mounting plate 33, thereby adjusting the position of the spot welding gun 6, so that the spot welding gun 6 can meet the welding operation of the wheel cover sheet metal parts. The setting of this structure can improve the use effect of the welding equipment.

[0040] The mounting plate 33 is equipped with an electric telescopic rod 34, which is mounted on the rear side of the mounting plate 33. The mounting plate 33 has two holes, in which a drive shaft 36 and a driven shaft 37 are installed. The drive shaft 36 and driven shaft 37 are longitudinally aligned, with the drive shaft 36 positioned above the driven shaft 37. Both ends of the drive shaft 36 extend out of the mounting plate 33, and drive gears 360 are mounted on each end. A rack 35 is mounted at the telescopic end of the electric telescopic rod 34. The rack 35 meshes with the drive gears 360 on the rear side of the drive shaft 36. The electric telescopic rod 34... The telescopic movement of the 4 can drive the drive shaft 36 to rotate. The drive gear 360, located on the front side of the mounting plate 33, meshes with the driven gear 370 mounted on the driven shaft 37, thereby enabling the rotation of the driven shaft 37. A swing block 38 is mounted on the driven shaft 37, and the spot welding gun 6 is mounted on the swing block 38. Through the above structure, the telescopic movement of the electric telescopic rod 34 can be used to control the swing of the spot welding gun 6, thereby controlling the spot welding gun 6 to perform spot welding on the wheel cover sheet metal parts. This structure can improve the welding automation of the spot welding gun 6, making operation simple and convenient, and improving the use effect of the welding equipment.

[0041] The swing block 38 has a guide post 380 on its rear side wall and a guide groove 39 on the front end face of the mounting plate 33. The guide post 380 is cylindrical and the guide groove 39 is semi-circular. The guide post 380 is embedded in the guide groove 39. This structure ensures that the swing block 38 swings stably, which in turn ensures the stability of the spot welding when the spot welding gun 6 performs the welding operation, thus improving the effectiveness of the welding equipment.

[0042] Among them, an electric telescopic rod 381 is provided at the lower end of the swing block 38. The end of the electric telescopic rod 381 is connected to the spot welding gun 6. The telescopic movement of the electric telescopic rod 381 controls the spot welding gun 6 to perform spot welding operations. The operation is simple, convenient and effective.

[0043] Among them, a fixing block 382 is set on the side wall of the telescopic end of the electric telescopic rod 381. The fixing blocks 382 are respectively installed on both sides of the electric telescopic rod 381. The fixing blocks 382 and the electric telescopic rod 381 are arranged perpendicularly. A gas support rod 383 is installed at the lower end of the fixing block 382. The pressure wheel 7 is installed at the lower end of the gas support rod 383 through the mounting shaft. The pressure wheel 7 can contact and press the sheet metal part, so that when spot welding is performed, both ends of the weld point are pressed by the pressure wheel 7, ensuring the welding effect and improving the use effect of this welding equipment.

[0044] Example 2: This invention also describes a method for welding automotive wheel arches. First, the wheel arch sheet metal part includes a main body and accessories. These are placed on corresponding positioning blocks 4. By activating the electromagnetic suction block 41, the wheel arch sheet metal part is pressed tightly against the positioning block 4. Then, by manually pushing or using a cylinder to drive the clamp 21, the fixing block 5 is pressed onto the wheel arch sheet metal part, thus fixing the wheel arch sheet metal part. Next, the telescopic cylinder 11 moves the base 1 towards the spot welding gun 6, stopping when it reaches the target position, so that the area of ​​the wheel arch sheet metal part requiring spot welding is located at the lower end of the spot welding gun 6. Next, the telescopic hydraulic cylinder 32 moves down, adjusting the height of the spot welding gun 6 so that the clamping wheel 7 mounted on the electric telescopic rod 381 contacts and clamps. Then, the electric telescopic rod 34 performs a telescopic movement, which is controlled by the electronic control system. The telescopic movement controls the swing angle of the spot welding gun 6, thereby determining the position of the weld point and ensuring that the welding position of the spot welding gun 6 meets the process requirements. When the spot welding gun 6 swings, the clamping wheel 7 is in close contact with the wheel cover sheet metal. This structure ensures that the wheel cover sheet metal on both sides of the weld point is in a clamped state during spot welding, ensuring the welding effect, making the operation simple and convenient, and improving the use effect of the welding equipment.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automobile wheel cover welding apparatus characterized by comprising: The utility model relates to a kind of welding device for wheel cover, including: Base (1), the base (1) is installed with slidable positioning seat (2), the positioning seat (2) is installed with positioning block (4) for positioning wheel cover sheet metal part, the positioning seat (2) is installed with swingable fixed pressing block (5), the fixed pressing block (5) corresponds with positioning block (4); Welding group, the welding group is provided with stabilizer (3), the stabilizer (3) is installed with swingable spot welding gun (6), the side of spot welding gun (6) is provided with for pressing wheel cover sheet metal part pressing wheel (7).

2. The apparatus of claim 1 wherein, The base (1) is provided with guide groove (10), the end side inner wall of guide groove (10) is installed with telescopic cylinder (11), the bottom surface of positioning seat (2) is provided with guide block (20), the guide block (20) is embedded into guide groove (10), the telescopic end of telescopic cylinder (11) is connected with guide block (20).

3. The apparatus of claim 1 wherein, The arc-shaped surface middle part of the positioning block (4) is provided with embedded groove (40), the embedded groove (40) is provided with electromagnetic suction block (41), the electromagnetic suction block (41) is circumscribed with electromagnetic controller.

4. The apparatus of claim 1 wherein, The positioning seat (2) is installed with calipers (21), the fixed pressing block (5) is connected with calipers (21), the end surface of fixed pressing block (5) is provided with rubber layer (50).

5. The apparatus of claim 1 wherein, The top of the stabilizer (3) is provided with mounting seat (30), the lower bottom surface of mounting seat (30) is provided with mounting groove (31), the mounting groove (31) is installed with telescopic hydraulic cylinder (32), the mounting groove (31) is installed with mounting plate (33), the telescopic hydraulic cylinder (32) is connected with mounting plate (33), and the spot welding gun (6) is connected with mounting plate (33).

6. A vehicle wheel cover welding apparatus according to claim 5, wherein The mounting plate (33) is installed with electric telescopic rod one (34), the extension end of electric telescopic rod one (34) is installed with rack (35), the mounting plate (33) is installed with driving shaft (36) and driven shaft (37), the driving shaft (36) is placed on the upper end of driven shaft (37), and the two ends of driving shaft (36) are respectively installed with driving gear (360). Driven shaft (37) is installed with swing block (38), and the outer end of driven shaft (37) is connected with driven gear (370). The driving gear (360) placed on the rear side of mounting plate (33) is engaged with rack (35), and the driving gear (360) placed on the front side of mounting plate (33) is engaged with driven gear (370). The spot welding gun (6) is installed below swing block (38).

7. A vehicle wheel cover welding apparatus according to claim 6, wherein The rear wall of swing block (38) is provided with guide column (380), and the front end surface of mounting plate (33) is provided with semicircular guide groove (39). The guide column (380) is embedded into guide groove (39).

8. The apparatus of claim 6 wherein, The lower end of swing block (38) is connected with electric telescopic rod two (381), and the end of the extension end of electric telescopic rod two (381) is connected with spot welding gun (6).

9. The apparatus of claim 8 wherein, The telescopic end side wall of the electric telescopic rod two (381) is provided with a fixing block (382), the fixing block (382) is arranged vertically with the electric telescopic rod two (381), a gas support rod (383) is connected on the fixing block (382), and the end of the gas support rod (383) is connected with the pressing wheel (7).

10. A method of welding an automotive wheel cover based on the method of any of claims 1-9, wherein the step of As follows: S1. Place the wheel cover sheet metal part on the positioning block (4), and push the caliper (21) to drive the fixed pressing block (5) to press on the wheel cover sheet metal part; S2. The telescopic gas cylinder (21) drives the base to move to the spot welding gun (6); S3. The spot welding gun (6) is swung through the telescopic action of the electric telescopic rod one (34), and the spot welding gun (6) is used for spot welding on the wheel cover sheet metal part.

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