An automobile wheel cover welding device and a welding production line

Abstract

The present invention provides an automobile wheel cover welding device and a welding production line, belonging to the technical field of automobile welding. The automobile wheel cover welding device and the welding production line include a support disk; a clamping mechanism, and multiple groups of clamping mechanisms are provided. Each group of clamping mechanisms includes a support sleeve, an outward expansion sliding rod, an upper clamping arm, a first pressurization groove, a telescopic groove, a reset spring groove, a sealing push plate, a telescopic rod, a lower pressing block, a first spring and an outward expansion inclined surface. The support sleeve is fixedly connected to the upper end of the support disk, the outward expansion sliding rod is slidably connected in the support sleeve, and the upper clamping arm is fixedly connected to one side end of the outward expansion sliding rod. The clamping force on the wheel cover can be restricted by fixing through pressure thrust, so as to avoid deformation of the wheel cover caused by excessive clamping force during mechanical clamping.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobile welding, and particularly relates to an automobile wheel cover welding device and a welding production line. Background Art

[0002] In the prior art, an automobile wheel cover, also known as a wheel arch or a fender liner, is a component installed on the body part above the vehicle tire. It has several main functions: protecting the body: preventing mud, sand, etc. splashed by the rotating tire from directly impacting the side of the body, reducing scratches and corrosion. Improving aerodynamic performance: A good design can help improve the air flow under the vehicle, reduce the drag coefficient, and improve fuel efficiency. Sound insulation and noise reduction: It can block part of the noise generated by the friction between the tire and the ground from entering the carriage, helping to improve driving comfort.

[0003] After retrieval, it is found that a Chinese patent with the authorized announcement number of "CN104551511B" discloses an automobile casting welding rack, including a base, a bracket is arranged on the base, a clamping device is arranged on the bracket, the clamping device is connected to the bracket through rotating shafts arranged at both ends thereof, the clamping device rotates through the rotating shafts, an infrared emitter is arranged on the bracket, an infrared receiver is arranged at the bottom of the clamping device, the infrared receiver is connected to a counter arranged on the base, and an alarm device is arranged on the counter. Through the infrared emitter arranged on the bracket and the infrared receiver arranged at the bottom of the clamping device for induction, and counting through the counter, when the number of flips reaches a certain amount, an operator is reminded to avoid the occurrence of safety accidents and improve the service life of the equipment.

[0004] The above technical solution counts through a counter, and when the number of flips reaches a certain amount, an operator is reminded to avoid the occurrence of safety accidents and improve the service life of the equipment. However, when clamping and fixing an automobile casting, the size of the clamping device is fixed, and the same device can only weld one type of automobile wheel cover. When welding different types of automobile wheel covers on the production line, different types of wheel covers cannot be accurately clamped and fixed. Summary of the Invention

[0005] The purpose of the present invention is to provide an automobile wheel cover welding device and a welding production line, aiming to solve the problem in the prior art that the same device can only weld one type of automobile wheel cover, and when welding different types of automobile wheel covers on the production line, different types of wheel covers cannot be accurately clamped and fixed.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An automobile wheel cover welding device and a welding production line, including:

[0008] Support plate;

[0009] Clamping mechanism, there are multiple groups of the clamping mechanisms, and each group of the clamping mechanisms includes a support sleeve, an outward expansion slide bar, an upper clamping arm, a first pressure increasing groove, a telescopic groove, a reset spring groove, a sealing push plate, a telescopic rod, a downward pressing block, a first spring and an outward expansion inclined surface. The support sleeve is fixedly connected to the upper end of the support plate. The outward expansion slide bar is slidably connected in the support sleeve. The upper clamping arm is fixedly connected to one side end of the outward expansion slide bar. The first pressure increasing groove is opened in the upper clamping arm. The telescopic groove is opened in the lower inner wall of the first pressure increasing groove. The reset spring groove is opened in the lower inner wall of the telescopic groove. The sealing push plate is slidably connected in the first pressure increasing groove. The telescopic rod is fixedly connected to the lower end of the sealing push plate and slides in the telescopic groove. The downward pressing block is fixedly connected to the lower end of the telescopic rod. The first spring is fixedly connected to the upper inner wall of the reset spring groove and the upper end of the downward pressing block. The outward expansion inclined surface is opened at one side end of the downward pressing block.

[0010] As a preferred solution of the present invention, fixing mechanisms are arranged in multiple outward expansion slide bars. Each group of the fixing mechanisms includes a connection hole, a second pressure increasing groove, a sliding out groove, a fixing slot, a lower pressing plate and a fixing plug. The connection hole is opened in one side inner wall of the first pressure increasing groove. The second pressure increasing groove is opened in the outward expansion slide bar and is communicated with the connection hole. The sliding out groove is opened in the lower inner wall of the second pressure increasing groove. The fixing slot is opened in one side inner wall of the support sleeve. The lower pressing plate is slidably connected in the second pressure increasing groove. The fixing plug is fixedly connected to the lower end of the lower pressing plate and slides in the sliding out groove and the fixing slot.

[0011] As a preferred solution of the present invention, limiting blocks are opened in multiple second pressure increasing grooves. Two upper pulling spring grooves are opened in the upper inner walls of multiple second pressure increasing grooves. Second springs are fixedly connected to the upper inner walls of multiple upper pulling spring grooves and the upper ends of multiple lower pressing plates.

[0012] As a preferred solution of the present invention, guiding angles are opened at the upper ends of multiple fixing slots. Multiple second sealing gaskets are fixedly connected to the lower inner walls of multiple second pressure increasing grooves.

[0013] As a preferred solution of the present invention, leather pads are fixedly connected to one side ends of multiple outward expansion inclined surfaces. First sealing gaskets are fixedly connected to the upper ends of multiple sealing push plates.

[0014] As a preferred solution of the present invention, a connection round hole is opened at the upper end of the support plate. A welding rod is fixedly connected to the circumferential inner wall of the connection round hole. A welding mechanism is fixedly connected to the lower end of the welding rod.

[0015] As a preferred embodiment of the present invention, the welding mechanism includes a welding base, a first robotic arm, a second robotic arm, and a welding gun. The welding base is fixedly connected to one side end of the welding rod. The first robotic arm is rotatably connected to one side end of the welding base. The second robotic arm is rotatably connected to one side end of the first robotic arm. The welding gun is fixedly connected to one side end of the second robotic arm.

[0016] As a preferred embodiment of the present invention, a first motor is fixedly connected to one side end of the welding base. The output end of the first motor is fixed to one side end of the first robotic arm. A second motor is fixedly connected to one side end of the second robotic arm. The output end of the second motor is fixed to one side end of the second robotic arm.

[0017] As a preferred embodiment of the present invention, a mounting bracket is fixedly connected to one side end of the support disk. The mounting bracket is connected to the production line lifting mechanism.

[0018] As a preferred embodiment of the present invention, the support disk is polygonal, and the installation position of the support sleeve can be changed according to the position of the tire cover welding point.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. Through this device, the high pressure in the first pressurizing groove forms a downward thrust on the sealing push plate. As a result, when the lower pressing block welds the wheel cover, it always presses against the upper end of the wheel cover to fix the wheel cover at the welding point. Moreover, due to the telescopic property of air, the lower pressing block can firmly fix the wheel cover when welding and fixing wheel covers of different models. Additionally, the fixing by pressure thrust can limit the clamping force on the wheel cover, avoiding deformation of the wheel cover caused by excessive clamping force during mechanical clamping.

[0021] 2. Through this device, when encountering a wheel cover with a smaller diameter, the parallel surface at the lower end of the lower pressing block directly contacts the wheel cover to directly fix the wheel cover. When fixing a wheel cover with a larger diameter, the edge of the wheel cover first contacts the inclined surface of the outward expansion inclined surface, thereby expanding the circumference formed by multiple upper clamping arms until it matches the outer surface of the wheel cover. This enables the device to clamp wheel covers of different heights and also fix wheel covers of different diameters.

[0022] 3. Through this device, high air pressure pushes the lower pressing plate downward, causing the fixed insertion block to slide out of the sliding groove and insert into the fixed slot, thereby restricting the lateral movement of the outward expansion sliding rod. As a result, the circumference of the outward expansion of multiple upper clamping arms is completed. At this time, even if the support disk continues to move downward, the multiple upper clamping arms will not continue to move, maintaining the stability during the welding of the wheel cover. Description of the Drawings

[0023] The accompanying drawings are used to provide a further understanding of the present invention and form a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0024] Figure 1 is the first three-dimensional structure diagram of the present invention;

[0025] Figure 2 is the second three-dimensional structure diagram of the present invention;

[0026] Figure 3 is the partial three-dimensional structure diagram of the present invention;

[0027] Figure 4 is the first exploded view of the structure of the present invention;

[0028] Figure 5 is the second exploded view of the structure of the present invention;

[0029] Figure 6 is the sectional view of the structure of the present invention;

[0030] Figure 7 is the sectional exploded view of the structure of the present invention;

[0031] Figure 8 is of the present invention Figure 7 the enlarged view of part A.

[0032] In the figures: 1, support disk; 2, support sleeve; 3, outwardly expanding slide bar; 4, upper clamping arm; 5, first pressure increasing groove; 6, telescopic groove; 7, reset spring groove; 8, sealing push plate; 9, telescopic rod; 10, downward pressing block; 11, first spring; 12, outwardly expanding inclined surface; 13, leather pad; 14, first sealing pad; 15, connecting hole; 16, second pressure increasing groove; 17, sliding out groove; 18, fixed insertion slot; 19, lower pressing plate; 20, fixed insertion block; 21, upper pulling spring groove; 22, second spring; 23, guiding angle; 24, second sealing pad; 25, connecting round hole; 26, welding rod; 27, welding base; 28, first motor; 29, first robotic arm; 30, second robotic arm; 31, second motor; 32, welding gun; 33, mounting bracket; 34, limiting block. Detailed Embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment 1

[0035] Please refer to Figures 1-8 , the present invention provides the following technical solutions:

[0036] An automobile wheel cover welding device and a welding production line, comprising:

[0037] Support disc 1;

[0038] A clamping mechanism, there are multiple groups of clamping mechanisms, each group of clamping mechanisms includes a support sleeve 2, an outward expansion slide bar 3, an upper clamping arm 4, a first pressurization groove 5, a telescopic groove 6, a return spring groove 7, a sealing push plate 8, a telescopic rod 9, a lower pressing block 10, a first spring 11 and an outward expansion inclined surface 12. The support sleeve 2 is fixedly connected to the upper end of the support disc 1, the outward expansion slide bar 3 is slidably connected to the support sleeve 2, the upper clamping arm 4 is fixedly connected to one side end of the outward expansion slide bar 3, the first pressurization groove 5 is opened in the upper clamping arm 4, the telescopic groove 6 is opened in the lower inner wall of the first pressurization groove 5, the return spring groove 7 is opened in the lower inner wall of the telescopic groove 6, the sealing push plate 8 is slidably connected to the first pressurization groove 5, the telescopic rod 9 is fixedly connected to the lower end of the sealing push plate 8 and slides in the telescopic groove 6, the lower pressing block 10 is fixedly connected to the lower end of the telescopic rod 9, the first spring 11 is fixedly connected to the upper inner wall of the return spring groove 7 and the upper end of the lower pressing block 10, and the outward expansion inclined surface 12 is opened in one side end of the lower pressing block 10.

[0039] In a specific embodiment of the present invention, the device is used for welding the connecting parts of the wheel cover on the automobile wheel cover production line. The support plate 1 is connected to the lifting mechanism. When the wheel cover is welded, the lifting mechanism drives the support plate 1 to move up and down. The support plate 1 is used to support the welding mechanism for welding the wheel cover connection position and the clamping mechanism for welding and fixing the wheel cover body. When the wheel cover is welded, the support plate 1 moves downward to the top of the wheel cover, the clamping mechanism clamps and fixes the wheel cover, and then welding is performed through the welding mechanism. The upper clamping arm 4 is a clamping arm for the wheel cover. The first boosting groove 5 in the upper clamping arm 4 is connected to the second boosting groove 16 in the outward expansion slide bar 3 and is in a sealed state. The sealing push plate 8 blocks the first boosting groove 5 while sliding in the first boosting groove 5 The lower opening of the first supercharged groove 5 prevents the air in the first supercharged groove 5 from leaking out. The outward-expanding inclined surface 12 is an inclined surface opened on one side of the lower pressing block 10, which is used to clamp one side surface of the wheel cover. The first spring 11 is always in a compressed state. The resilience of the first spring 11 pushes the lower pressing block 10 to lengthen the clamping arm formed by the upper clamping arm 4 and the lower pressing block 10, and makes the sealing push plate 8 press against the lower inner wall of the first supercharged groove 5. When the wheel cover needs to be welded, the lifting mechanism in the support plate 1 drives the lower pressing block 10 to move downward. At this time, the lower pressing block 10 contacts the side of the wheel cover. After the lower pressing block 10 presses against the upper end of the wheel cover, the support plate 1 continues to move downward. At this time, the position of the lower pressing block 10 is restricted by the wheel cover and remains unchanged in height, while the upper clamping arm 4 continues to descend, causing the sealing push plate 8 to move toward the first supercharged groove 5. The upper end slides and squeezes the first spring 11 to contract, the weight of the air in the first boost groove 5 and the second boost groove 16 remains unchanged while the space is reduced, so that the pressure in the first boost groove 5 increases as the upper clamping arm 4 descends, and when the support plate 1 stops moving for welding, the high pressure in the first boost groove 5 forms a downward thrust on the sealing push plate 8, so that the lower pressing block 10 always presses against the upper end of the wheel cover during welding, thereby fixing the wheel cover on the welding point, and through the expansion and contraction performance of the air, the lower pressing block 10 can firmly fix the wheel cover when welding and fixing wheel covers of different models, and the clamping force on the wheel cover can be limited by the pressure thrust fixation, so as to avoid deformation of the wheel cover caused by excessive clamping force during mechanical clamping, and When performing fixed clamping, when encountering a wheel cover with a smaller diameter, the parallel surface of the lower end of the lower pressing block 10 directly contacts the wheel cover, and the wheel cover is directly fixed. When fixing a wheel cover with a larger diameter, the edge of the wheel cover first contacts the inclined surface of the outward expansion slope 12, and the wheel cover squeezes the inclined surface of the outward expansion slope 12 to push the upper clamping arm 4 toward the outside of the support plate 1, and the outward expansion slide rod 3 slides in the support sleeve 2 to expand the multiple upper clamping arms 4 outward, thereby expanding the circumference formed by the multiple upper clamping arms 4 until it matches the outer surface of the wheel cover, and then the parallel surface of the lower pressing block 10 contacts the upper end of the wheel cover and fixes the wheel cover against the welding point, so that the device can clamp wheel covers of different heights and fix wheel covers of different diameters.

[0040] For details, please refer to Figures 1-8 , fixing mechanisms are provided in multiple outer expansion sliding rods 3. Each group of fixing mechanisms includes a connection hole 15, a second pressure increasing groove 16, a sliding out groove 17, a fixing slot 18, a lower pressing plate 19 and a fixing plug 20. The connection hole 15 is opened on one inner wall of the first pressure increasing groove 5. The second pressure increasing groove 16 is opened in the outer expansion sliding rod 3 and is communicated with the connection hole 15. The sliding out groove 17 is opened on the lower inner wall of the second pressure increasing groove 16. The fixing slot 18 is opened on one inner wall of the support sleeve 2. The lower pressing plate 19 is slidably connected in the second pressure increasing groove 16. The fixing plug 20 is fixedly connected to the lower end of the lower pressing plate 19 and slides in the sliding out groove 17 and the fixing slot 18.

[0041] In this embodiment: The fixing mechanism is used to limit the outward expansion distance of the upper clamping arm 4 after the parallel plane at the lower end of the pressing block 10 contacts the wheel cover. The connection hole 15 is used to communicate the air in the first pressure increasing groove 5 and the second pressure increasing groove 16. The fixing plug 20 is respectively matched with the sliding out groove 17 and the fixing slot 18, and the fixing plug 20 blocks the lower openings of the multiple sliding out grooves 17 to keep the second pressure increasing groove 16 and the first pressure increasing groove 5 airtight. When the air pressure in the first pressure increasing groove 5 does not rise, the fixing plug 20 is entirely located in the sliding out groove 17, and the lower pressing plate 19 is located in the middle of the second pressure increasing groove 16 and at the lower end of the connection hole 15. At this time, the outer expansion sliding rod 3 can slide freely in the support sleeve 2. When the parallel plane of the pressing block 10 abuts against the wheel cover, and the air pressure in the first pressure increasing groove 5 and the second pressure increasing groove 16 increases as the support disc 1 moves downward, the high air pressure pushes the lower pressing plate 19 downward, causing the fixing plug 20 to slide out of the sliding out groove 17 and insert into the fixing slot 18, thereby restricting the lateral movement of the outer expansion sliding rod 3, and then completing the circumferential size of the outward expansion of the multiple upper clamping arms 4. At this time, when the support disc 1 continues to move downward, the multiple upper clamping arms 4 will not continue to move, so as to maintain the stability during the welding of the wheel cover.

[0042] For details, please refer to Figures 1-8 , limiting blocks 34 are opened in multiple second pressure increasing grooves 16. Two upper pull spring grooves 21 are opened on the upper inner walls of the multiple second pressure increasing grooves 16. Second springs 22 are fixedly connected to the upper inner walls of the multiple upper pull spring grooves 21 and the upper ends of the multiple lower pressing plates 19.

[0043] In this embodiment: the second spring 22 is fixed in the second boost groove 16 and on the lower pressure plate 19, and is used to lift the height of the lower pressure plate 19. When the pressure in the second boost groove 16 is not increased, the second spring 22 pulls the lower pressure plate 19 upward until it is resisted by the limit block 34, preventing the lower pressure plate 19 from blocking the opening of the connecting hole 15. When the air pressure in the second boost groove 16 is increased, the high air pressure forms a thrust on the upper end of the lower pressure plate 19, and the thrust pushes the lower pressure plate 19 to move downward and stretch the second spring 22 until the welding is completed, and the pressure in the second boost groove 16 becomes an atmospheric pressure again. The second spring 22 pulls the lower pressure plate 19 back to its original position and contacts the sliding limit of the outward expansion slide bar 3.

[0044] For details, please refer to Figures 1-8 A guide angle 23 is formed at the upper ends of the plurality of fixed slots 18 , and a plurality of second sealing pads 24 are fixedly connected to the lower inner walls of the plurality of second boosting grooves 16 .

[0045] In this embodiment: the guide angle 23 is the chamfer of the upper opening of the fixed slot 18. When the fixed plug 20 moves downward and does not contact the opening of the fixed slot 18, it contacts the guide angle 23. The inclined surface of the guide angle 23 makes the outward expansion slide bar 3 slightly move a certain distance so that the fixed plug 20 can be accurately inserted into the fixed slot 18. The second sealing gasket 24 is provided at the upper end of the opening of the plurality of slide-out slots 17, and is used to seal the gap between the fixed plug 20 and the slide-out slot 17 to prevent the air in the first boosting slot 5 from leaking out.

[0046] For details, please refer to Figures 1-8 One side end of each of the multiple outwardly expanding inclined surfaces 12 is fixedly connected with a leather pad 13 , and the upper ends of each of the multiple sealing push plates 8 are fixedly connected with a first sealing pad 14 .

[0047] In this embodiment: the leather pad 13 is made of rubber material and is fixed at the contact end of the outward-expanded inclined surface 12 and the wheel cover. The outward-expanded inclined surface 12 is in direct contact with the wheel cover to increase the contact area with the wheel cover, and to share the direct pressure of the lower pressing block 10 on the wheel cover to avoid the wheel cover being squeezed and deformed during welding. The first sealing gasket 14 is arranged at the contact end of the sealing push plate 8 and the inner wall of the first boost groove 5, and is used to seal the first boost groove 5 to prevent the air in the first boost groove 5 from leaking from the telescopic groove 6.

[0048] For details, please refer to Figures 1-8 A connecting circular hole 25 is opened at the upper end of the supporting plate 1, a welding rod 26 is fixedly connected to the circumferential inner wall of the connecting circular hole 25, and a welding mechanism is fixedly connected to the lower end of the welding rod 26.

[0049] In this embodiment: the connecting circular hole 25 is opened in the middle of the supporting plate 1, and the welding rod 26 is used to support the welding mechanism. After the multiple groups of upper clamping arms 4 have fixed the wheel cover, the welding device at the center of the circle welds the fixed wheel cover.

[0050] For details, please refer to Figures 1-8 , the welding mechanism includes a welding base 27, a first robotic arm 29, a second robotic arm 30, and a welding gun 32. The welding base 27 is fixedly connected to one end of the welding rod 26. The first robotic arm 29 is rotatably connected to one end of the welding base 27. The second robotic arm 30 is rotatably connected to one end of the first robotic arm 29. The welding gun 32 is fixedly connected to one end of the second robotic arm 30.

[0051] In this embodiment: The welding base 27 is the fixed base of the welding mechanism. The first robotic arm 29 is the first adjustment arm of the welding mechanism. The second robotic arm 30 is the second adjustment arm of the welding mechanism. The welding gun 32 is fixed to the second robotic arm 30. The welding point of the welding gun 32 is adjusted by the first robotic arm 29 and the second robotic arm 30 to weld the wheel cover welding point.

[0052] For details, please refer to Figures 1-8 , a first motor 28 is fixedly connected to one end of the welding base 27. The output end of the first motor 28 is fixed to one end of the first robotic arm 29. A second motor 31 is fixedly connected to one end of the second robotic arm 30. The output end of the second motor 31 is fixed to one end of the second robotic arm 30.

[0053] In this embodiment: The output end of the first motor 28 is fixed to one end of the first robotic arm 29 to control the first robotic arm 29 during welding. The same applies to the second motor 31. The programming software and the hardware controller are signal-connected to the first motor 28 and the second motor 31. After the support disk 1 moves down a certain distance, the welding program is started to automatically weld the wheel cover.

[0054] For details, please refer to Figures 1-8 , a mounting bracket 33 is fixedly connected to one end of the support disk 1. The mounting bracket 33 is connected to the production line lifting mechanism.

[0055] In this embodiment: The mounting bracket 33 is provided with mounting threads. When installed on the wheel cover processing production line, the mounting bracket 33 is connected to the lifting end of the lifting mechanism. The lifting mechanism drives the support disk 1 to move up and down, so that the welding gun 32 performs fixed-point welding on the wheel cover at the welding point.

[0056] For details, please refer to Figures 1-8 , the support disk 1 is polygonal, and the installation position of the support sleeve 2 can be changed according to the position of the tire cover welding point.

[0057] In this embodiment: The support disk 1 can be an irregular polygon. By changing the installation position and installation direction of the support sleeve 2, multiple pressing blocks 10 clamp the outer circumferential surface of the wheel cover, and also clamp the inner circumferential surface, and provide a welding space for the welding gun 32.

[0058] It should be noted that the first motor 28, the second motor 31, and the welding gun 32 used in this device are all prior arts and will not be elaborated here.

[0059] The working principle and use process of the present invention are as follows: the device is used for welding the connecting parts of the wheel cover on the automobile wheel cover production line. The support plate 1 is connected to the lifting mechanism. When welding the wheel cover, the lifting mechanism drives the support plate 1 to move up and down. The support plate 1 is used to support the welding mechanism for welding the wheel cover connection position and the clamping mechanism for welding and fixing the wheel cover body. When welding the wheel cover, the support plate 1 moves downward to the top of the wheel cover, the clamping mechanism clamps and fixes the wheel cover, and then welding is performed through the welding mechanism. The upper clamping arm 4 is the clamping arm for the wheel cover. The first boost groove 5 in the upper clamping arm 4 is connected to the second boost groove 16 in the outward expansion slide bar 3 and is in a sealed state. The sealing push plate 8 blocks the first boost groove 5 while sliding in the first boost groove 5. The lower opening of the groove 5 prevents the air in the first supercharged groove 5 from leaking out. The outward expansion slope 12 is an inclined surface opened on one side of the lower pressure block 10, which is used to clamp one side surface of the wheel cover. The first spring 11 is always in a compressed state. The resilience of the first spring 11 pushes the lower pressure block 10 to lengthen the clamping arm formed by the upper clamping arm 4 and the lower pressure block 10, and makes the sealing push plate 8 press against the lower inner wall of the first supercharged groove 5. When the wheel cover needs to be welded, the lifting mechanism in the support plate 1 drives the lower pressure block 10 to move downward. At this time, the lower pressure block 10 contacts the side of the wheel cover. After the lower pressure block 10 presses against the upper end of the wheel cover, the support plate 1 continues to move downward. At this time, the position of the lower pressure block 10 is restricted by the wheel cover and remains unchanged in height, while the upper clamping arm 4 continues to descend, causing the sealing push plate 8 to move toward the first supercharged groove 5. The upper end slides and squeezes the first spring 11 to shrink, the weight of the air in the first boost groove 5 and the second boost groove 16 remains unchanged while the space is reduced, so that the pressure in the first boost groove 5 increases as the upper clamping arm 4 descends, and when the support plate 1 stops moving for welding, the high pressure in the first boost groove 5 forms a downward thrust on the sealing push plate 8, so that the lower pressing block 10 always presses against the upper end of the wheel cover during the wheel cover welding, thereby fixing the wheel cover on the welding point, and through the expansion and contraction performance of the air, the lower pressing block 10 can firmly fix the wheel cover when welding and fixing wheel covers of different models, and the clamping force on the wheel cover can be limited by the pressure thrust fixation, so as to avoid deformation of the wheel cover caused by excessive clamping force during mechanical clamping, and When performing fixed clamping, when encountering a wheel cover with a smaller diameter, the parallel surface of the lower end of the lower pressing block 10 directly contacts the wheel cover, and the wheel cover is directly fixed. When fixing a wheel cover with a larger diameter, the edge of the wheel cover first contacts the inclined surface of the outward expansion slope 12, and the wheel cover squeezes the inclined surface of the outward expansion slope 12 to push the upper clamping arm 4 toward the outside of the support plate 1, and the outward expansion slide rod 3 slides in the support sleeve 2 to expand the multiple upper clamping arms 4 outward, thereby expanding the circumference formed by the multiple upper clamping arms 4 until it matches the outer surface of the wheel cover, and then the parallel surface of the lower pressing block 10 contacts the upper end of the wheel cover and fixes the wheel cover against the welding point, so that the device can clamp wheel covers of different heights and fix wheel covers of different diameters.

[0060] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A welding device for automobile wheel cover, characterized in that: include: Support plate (1); The clamping mechanism is provided with a plurality of groups, each group of the clamping mechanisms comprises a support sleeve (2), an outward expansion slide bar (3), an upper clamping arm (4), a first boosting groove (5), a telescopic groove (6), a return spring groove (7), a sealing push plate (8), a telescopic rod (9), a lower pressure block (10), a first spring (11) and an outward expansion inclined surface (12), the support sleeve (2) is fixedly connected to the upper end of the support plate (1), the outward expansion slide bar (3) is slidably connected in the support sleeve (2), the upper clamping arm (4) is fixedly connected to one side end of the outward expansion slide bar (3), the first boosting groove (5) is opened at In the upper clamping arm (4), the telescopic groove (6) is opened on the lower inner wall of the first boosting groove (5), the return spring groove (7) is opened on the lower inner wall of the telescopic groove (6), the sealing push plate (8) is slidably connected in the first boosting groove (5), the telescopic rod (9) is fixedly connected to the lower end of the sealing push plate (8) and slides in the telescopic groove (6), the lower pressing block (10) is fixedly connected to the lower end of the telescopic rod (9), the first spring (11) is fixedly connected to the upper inner wall of the return spring groove (7) and the upper end of the lower pressing block (10), and the outward expansion inclined surface (12) is opened on one side end of the lower pressing block (10); A plurality of the outward-expanding slide bars (3) are each provided with a fixing mechanism, and each group of the fixing mechanisms comprises a connecting hole (15), a second boosting groove (16), a slide-out groove (17), a fixing slot (18), a lower pressure plate (19) and a fixing insert (20), wherein the connecting hole (15) is provided on an inner wall of one side of the first boosting groove (5), the second boosting groove (16) is provided in the outward-expanding slide bar (3) and is connected to the connecting hole (15), the slide-out groove (17) is provided on a lower inner wall of the second boosting groove (16), the fixing slot (18) is provided on an inner wall of one side of the supporting sleeve (2), the lower pressure plate (19) is slidably connected in the second boosting groove (16), and the fixing insert (20) is fixedly connected to the lower end of the lower pressure plate (19) and slides in the slide-out groove (17) and the fixing slot (18); A plurality of the second boosting grooves (16) are each provided with a limit block (34), an upper inner wall of the plurality of the second boosting grooves (16) are each provided with two upper pull spring grooves (21), and a second spring (22) is fixedly connected to the upper inner walls of the plurality of the upper pull spring grooves (21) and the upper ends of the plurality of lower pressure plates (19); The upper ends of the plurality of fixed slots (18) are each provided with a guide angle (23), and the lower inner walls of the plurality of second boosting slots (16) are each fixedly connected with a plurality of second sealing pads (24); One side end of each of the plurality of outwardly expanding inclined surfaces (12) is fixedly connected to a leather pad (13), and the upper ends of each of the plurality of sealing push plates (8) are fixedly connected to a first sealing pad (14).

2. The automobile wheel cover welding device according to claim 1, characterized in that: A connecting circular hole (25) is provided at the upper end of the supporting plate (1), a welding rod (26) is fixedly connected to the circumferential inner wall of the connecting circular hole (25), and a welding mechanism is fixedly connected to the lower end of the welding rod (26).

3. The automobile wheel cover welding device according to claim 2, characterized in that: The welding mechanism comprises a welding base (27), a first mechanical arm (29), a second mechanical arm (30) and a welding gun (32); the welding base (27) is fixedly connected to one side end of a welding rod (26); the first mechanical arm (29) is rotatably connected to one side end of the welding base (27); the second mechanical arm (30) is rotatably connected to one side end of the first mechanical arm (29); and the welding gun (32) is fixedly connected to one side end of the second mechanical arm (30).

4. The automobile wheel cover welding device according to claim 3, characterized in that: A first motor (28) is fixedly connected to one side end of the welding base (27), an output end of the first motor (28) is fixed to one side end of the first mechanical arm (29), a second motor (31) is fixedly connected to one side end of the second mechanical arm (30), and an output end of the second motor (31) is fixed to one side end of the second mechanical arm (30).

5. The automobile wheel cover welding device according to claim 4, characterized in that: A mounting frame (33) is fixedly connected to one side end of the support plate (1), and the mounting frame (33) is connected to a production line lifting mechanism.

6. The automobile wheel cover welding device according to claim 5, characterized in that: The support plate (1) is polygonal, and the installation position of the support sleeve (2) can be changed according to the position of the tire cover welding point.

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