Automobile wheel cover welding device and welding production line

Abstract

The invention provides an automobile wheel cover welding device and a welding production line, and belongs to the technical field of automobile welding. The multiple clamping mechanisms are arranged, each clamping mechanism comprises a supporting sleeve, an external expansion sliding rod, an upper clamping arm, a first pressurizing groove, a telescopic groove, a reset spring groove, a sealing push plate, a telescopic rod, a lower pressing block, a first spring and an external expansion slope, the supporting sleeve is fixedly connected to the upper end of the supporting disc, and the external expansion sliding rod is slidably connected into the supporting sleeve; the upper clamping arm is fixedly connected to one side end of the external expansion sliding rod, the clamping force on the wheel cover can be limited through pressure intensity thrust fixation, and the situation that when mechanical clamping is carried out, the clamping force is too large, and consequently the wheel cover deforms is avoided.

Description

Technical Field

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

[0002] In the prior art, a car wheel cover, also known as a wheel arch or fender liner, is a part of the vehicle body installed above the tire. It has several main functions: Protect the vehicle body: prevent mud, water, sand and gravel splashed by the tire from directly impacting the side of the vehicle body when the tire rotates, and reduce scratches and corrosion. Improve aerodynamic performance: good design can help improve the airflow under the car, reduce the wind resistance coefficient, and improve fuel efficiency. Sound insulation and noise reduction: It can block some of the noise generated by the friction between the tire and the ground from entering the car compartment, which helps to improve driving comfort.

[0003] After searching, it was found that a Chinese patent with the authorization announcement number "CN104551511B" disclosed an automobile casting welding frame, including a base, a bracket arranged on the base, a clamping device arranged on the bracket, the clamping device is connected to the bracket through a rotating shaft arranged at both ends, the clamping device rotates through the rotating shaft, an infrared transmitter is arranged on the bracket, an infrared receiver is arranged at the bottom of the clamping device, the infrared receiver and a counter arranged on the base, and an alarm device is arranged on the counter. The infrared transmitter arranged on the bracket and the infrared receiver arranged at the bottom of the clamping device are used for sensing, and the counter is used for counting. When the number of flips reaches a certain number, the operator is reminded to avoid the occurrence of safety accidents and improve the service life of the equipment.

[0004] The above technical solution counts by means of a counter, and reminds the operator when a certain number of flips is reached, thereby avoiding the occurrence of safety accidents and increasing the service life of the equipment. However, when clamping and fixing automobile castings in the above solution, 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 a car 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 car wheel cover, and when welding different types of car wheel covers on the production line, different types of wheel covers cannot be accurately clamped and fixed.

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

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

[0008] Support plate;

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

[0010] As a preferred solution of the present invention, a fixing mechanism is provided in each of the plurality of outward-expanding slide bars, and each group of the fixing mechanisms includes a connecting hole, a second boosting groove, a slide-out groove, a fixed slot, a lower pressure plate and a fixed plug block. The connecting hole is opened on an inner wall on one side of the first boosting groove, the second boosting groove is opened in the outward-expanding slide bar and is connected with the connecting hole, the slide-out groove is opened on the lower inner wall of the second boosting groove, the fixed slot is opened on an inner wall on one side of the supporting sleeve, the lower pressure plate is slidably connected in the second boosting groove, and the fixed plug block is fixedly connected to the lower end of the lower pressure plate and slides in the slide-out groove and the fixed slot.

[0011] As a preferred solution of the present invention, a plurality of the second boosting grooves are each provided with a limiting block, a plurality of the upper inner walls of the second boosting grooves are each provided with two upper pull-up spring grooves, and a second spring is fixedly connected to the upper inner walls of the plurality of the upper pull-up spring grooves and the upper ends of the plurality of lower pressure plates.

[0012] As a preferred solution of the present invention, the upper ends of the plurality of the fixing slots are provided with guide angles, and the lower inner walls of the plurality of the second boosting slots are fixedly connected with a plurality of second sealing gaskets.

[0013] As a preferred solution of the present invention, one side end of each of the plurality of outwardly expanding inclined surfaces is fixedly connected with a leather pad, and the upper ends of each of the plurality of sealing push plates are fixedly connected with a first sealing pad.

[0014] As a preferred solution of the present invention, a connecting circular hole is opened at the upper end of the supporting plate, a welding rod is fixedly connected to the circumferential inner wall of the connecting circular hole, and a welding mechanism is fixedly connected to the lower end of the welding rod.

[0015] As a preferred solution 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, and the welding gun is fixedly connected to one side end of the second robotic arm.

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

[0017] As a preferred solution of the present invention, a mounting frame is fixedly connected to one side end of the support plate, and the mounting frame is connected to a lifting mechanism of the production line.

[0018] As a preferred solution of the present invention, the support plate 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 present invention has the following beneficial effects:

[0020] 1. Through this device, the high pressure in the first boost groove forms a downward thrust on the sealing push plate, so that the lower pressure block always presses against the upper end of the wheel cover during welding, thereby fixing the wheel cover on the welding point. Moreover, through the expansion and contraction performance of the air, the lower pressure block can firmly fix the wheel cover when welding and fixing wheel covers of different models. Moreover, the clamping force on the wheel cover can be limited by the pressure thrust fixation, so as to avoid deformation of the wheel cover due to excessive clamping force during mechanical clamping.

[0021] 2. Through this device, when encountering a wheel cover with a smaller diameter, the parallel surface of the lower end of the lower pressure 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 slope, and then expands the circumference formed by the multiple upper clamping arms until it matches the outer surface of the wheel cover, so that this device can clamp wheel covers of different heights and fix wheel covers of different diameters.

[0022] 3. Through this device, high air pressure pushes the lower pressure plate downward, causing the fixed plug to slide out of the sliding groove and insert into the fixed slot, thereby limiting the lateral movement of the outward expansion slide rod, thereby completing the outward expansion of the circumference of the multiple upper clamping arms. At this time, if the support plate continues to move downward, the multiple upper clamping arms will not continue to move, so as to maintain the stability of the wheel cover during welding. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0024] Figure 1 It is a first structural stereogram of the present invention;

[0025] Figure 2 It is a second structural stereogram of the present invention;

[0026] Figure 3 It is a three-dimensional diagram of the local structure in the present invention;

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

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

[0029] Figure 6 It is a cross-sectional view of the structure in the present invention;

[0030] Figure 7 It is a cross-sectional exploded view of the structure in the present invention;

[0031] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle.

[0032] In the figure: 1. support plate; 2. support sleeve; 3. outward expansion slide rod; 4. upper clamping arm; 5. first boosting groove; 6. telescopic groove; 7. return spring groove; 8. sealing push plate; 9. telescopic rod; 10. lower pressure block; 11. first spring; 12. outward expansion slope; 13. leather pad; 14. first sealing pad; 15. connecting hole; 16. second boosting groove; 17. slide-out groove; 18. fixed slot; 19. lower pressure plate; 20. fixed plug block; 21. upper pull-up spring groove; 22. second spring; 23. guide angle; 24. second sealing pad; 25. connecting circular hole; 26. welding rod; 27. welding base; 28. first motor; 29. ​​first mechanical arm; 30. second mechanical arm; 31. second motor; 32. welding gun; 33. mounting bracket; 34. limit block. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] See also Figure 1-Figure 8 , the present invention provides the following technical solutions:

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

[0037] Support plate 1;

[0038] The clamping mechanism is provided with multiple groups, each group of clamping mechanisms includes 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, and 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 pressure 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 pressure block 10, and the outward expansion slope 12 is opened on one side end of the lower pressure 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 Figure 1-Figure 8 , multiple outward-expanding slide bars 3 are each provided with a fixing mechanism, and each set of fixing mechanisms includes a connecting hole 15, a second boosting groove 16, a slide-out groove 17, a fixed slot 18, a lower pressure plate 19 and a fixed plug block 20. The connecting hole 15 is opened on one side inner wall of the first boosting groove 5, the second boosting groove 16 is opened in the outward-expanding slide bar 3 and is connected to the connecting hole 15, the slide-out groove 17 is opened on the lower inner wall of the second boosting groove 16, the fixed slot 18 is opened on one side inner wall of the supporting sleeve 2, the lower pressure plate 19 is slidably connected in the second boosting groove 16, and the fixed plug block 20 is fixedly connected to the lower end of the lower pressure plate 19 and slides in the slide-out groove 17 and the fixed 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 surface of the lower end of the lower pressure block 10 contacts the wheel cover, the connecting hole 15 is used to connect the air in the first supercharged groove 5 and the second supercharged groove 16, the fixed plug 20 matches the slide-out groove 17 and the fixed slot 18 respectively, and the fixed plug 20 blocks the lower openings of the plurality of slide-out grooves 17 to keep the second supercharged groove 16 and the first supercharged groove 5 sealed, when the air pressure in the first supercharged groove 5 does not increase, the fixed plug 20 is completely arranged in the slide-out groove 17, and the lower pressure plate 19 is arranged in the middle position of the second supercharged groove 16 and At the lower end of the connecting hole 15, the outward expansion slide rod 3 can slide freely in the supporting sleeve 2. When the parallel surface of the lower pressure block 10 presses against the wheel cover, and the air pressure in the first boost groove 5 and the second boost groove 16 increases as the support plate 1 moves downward, the high air pressure pushes the lower pressure plate 19 to move downward, so that the fixed plug block 20 slides out of the slide-out groove 17 and inserts into the fixed slot 18, thereby limiting the lateral movement of the outward expansion slide rod 3, and completing the outward expansion of the circumference of the multiple upper clamping arms 4. At this time, if the support plate 1 continues to move downward, the multiple upper clamping arms 4 will not continue to move, so as to maintain the stability of the wheel cover during welding.

[0042] For details, please refer to Figure 1-Figure 8 A limiting block 34 is provided in each of the second boosting grooves 16, two upper pull-up spring grooves 21 are provided on the upper inner walls of the second boosting grooves 16, and a second spring 22 is fixedly connected to the upper inner walls of the upper pull-up spring grooves 21 and the upper ends of the lower pressure 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 Figure 1-Figure 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 Figure 1-Figure 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 Figure 1-Figure 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 Figure 1-Figure 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 side end of the welding rod 26, the first robotic arm 29 is rotatably connected to one side end of the welding base 27, the second robotic arm 30 is rotatably connected to one side end of the first robotic arm 29, and the welding gun 32 is fixedly connected to one side end of the second robotic arm 30.

[0051] In this embodiment: the welding base 27 is a fixed base of the welding mechanism, the first robotic arm 29 is a first adjusting arm of the welding mechanism, the second robotic arm 30 is a second adjusting arm of the welding mechanism, the welding gun 32 is fixed to the second robotic arm 30, and the welding points of the welding gun 32 are adjusted by the first robotic arm 29 and the second robotic arm 30 to weld the wheel cover welding points.

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

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

[0054] For details, please refer to Figure 1-Figure 8 A mounting frame 33 is fixedly connected to one side end of the support plate 1, and the mounting frame 33 is connected to the lifting mechanism of the production line.

[0055] In this embodiment: a mounting thread is provided on the mounting frame 33. When installed in the wheel cover processing production line, the mounting frame 33 is connected to the lifting end of the lifting mechanism. The lifting mechanism drives the support plate 1 to move up and down, so that the welding gun 32 performs spot welding on the wheel cover at the welding point.

[0056] For details, please refer to Figure 1-Figure 8 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.

[0057] In this embodiment: the support plate 1 can be an irregular polygon, and by changing the installation position and installation direction of the support sleeve 2, multiple pressing blocks 10 are determined to clamp the outer circumference of the wheel cover, and the inner circumference can also be clamped, and a welding space is provided 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 the present device are all prior art and will not be described in detail herein.

[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 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 aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automobile wheel cover welding device and welding production line, 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).

2. The automobile wheel cover welding device and welding production line according to claim 1, characterized in that: A fixing mechanism is provided in each of the plurality of outward-expanding slide bars (3), and each group of the fixing mechanisms comprises a connecting hole (15), a second boosting groove (16), a slide-out groove (17), a fixed slot (18), a lower pressure plate (19) and a fixed insert block (20). 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 the lower inner wall of the second boosting groove (16), the fixed 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 fixed insert block (20) is fixedly connected to the lower end of the lower pressure plate (19) and slides in the slide-out groove (17) and the fixed slot (18).

3. The automobile wheel cover welding device and welding production line according to claim 2, characterized in that: A plurality of the second boosting grooves (16) are provided with a limit block (34), the upper inner walls of the plurality of the second boosting grooves (16) are provided with two upper pull spring grooves (21), and 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) are fixedly connected with a second spring (22).

4. The automobile wheel cover welding device and welding production line according to claim 3, characterized in that: 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 pressure boosting slots (16) are each fixedly connected with a plurality of second sealing pads (24).

5. The automobile wheel cover welding device and welding production line according to claim 4, characterized in that: 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).

6. The automobile wheel cover welding device and welding production line according to claim 5, 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).

7. The automobile wheel cover welding device and welding production line according to claim 6, 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).

8. The automobile wheel cover welding device and welding production line according to claim 7, characterized in that: One side end of the welding base (27) is fixedly connected to a first motor (28), an output end of the first motor (28) is fixed to one side end of a first mechanical arm (29), one side end of the second mechanical arm (30) is fixedly connected to a second motor (31), an output end of the second motor (31) is fixed to one side end of the second mechanical arm (30).

9. The automobile wheel cover welding device and welding production line according to claim 8, 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.

10. The automobile wheel cover welding device and welding production line according to claim 9, 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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