A clamping mechanism for welding the end flange of an automobile exhaust pipe and its usage method

Abstract

The present invention relates to the technical field of welding clamping, and discloses a clamping mechanism for welding the end flange of an automobile exhaust pipe and its use method, including a housing. A bottom plate is fixedly connected to the bottom of the housing, and an electric telescopic rod is fixedly connected to the top of the bottom plate. After the electric telescopic rod is powered on, the electric telescopic rod contracts, driving the piston plate to slide downward along the inner wall of the housing, forcing a plurality of piston square plates to slide outward along the inner walls of the corresponding piston grooves. The piston square plates drive the arc-shaped rods to move outward synchronously through the first fixing block, the telescopic spring rod, and the second fixing block, so that the arcs of the respective arc-shaped rods contact the inner wall of the flange, and at the same time, a plurality of arc-shaped rods will also contact the inner wall of the exhaust pipe. The plurality of outwardly expanding arc-shaped rods will force the center of the flange and the exhaust pipe to be on the same horizontal plane, enabling the device to reduce the strange shape of the flange, position the center positions of the flange and the exhaust pipe, and improve the positioning efficiency of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of welding clamping equipment, and particularly to a clamping mechanism for welding the end flange of an automobile exhaust pipe and a using method thereof. Background Technique

[0002] The automobile exhaust system refers to a system for collecting and discharging exhaust gas, which generally consists of an exhaust manifold, an exhaust pipe, a catalytic converter assembly, a muffler, a flange plate, etc.

[0003] Among them, in order to adapt to the compact design at the bottom of the vehicle, the outer shape of some flange plates is not a regular circle, resulting in difficulty in making the center point of the flange plate coincide with the center position of the exhaust pipe, and manual fine-tuning is required in the later stage. The following solutions are proposed for the above problems. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a clamping mechanism for welding the end flange of an automobile exhaust pipe, including a housing, the bottom of the housing is fixedly connected with a bottom plate, the top of the bottom plate is fixedly connected with an electric telescopic rod, and the end of the electric telescopic rod away from the bottom plate is fixedly connected with a piston plate;

[0005] A control mechanism, the control mechanism includes a fixed ring fixedly connected to the inner wall of the housing, a plurality of piston grooves are opened on the side wall of the fixed ring, a flange plate is placed on the top of the fixed ring, and an exhaust pipe is placed on the top of the flange plate;

[0006] A clamping mechanism, the clamping mechanism includes a piston square plate slidably connected to the inner walls of a plurality of piston grooves, a first fixing block is fixedly connected to the side wall of the piston square plate, a telescopic spring rod is fixedly connected to the other end of the first fixing block, a second fixing block is fixedly connected to the end of the telescopic spring rod away from the first fixing block, an arc-shaped rod is fixedly connected to the top of the second fixing block, and a limiting component is fixedly connected to the side wall of the piston square plate. By using the characteristic that the diameter of the hole of the flange plate is equal to the inner diameter of the exhaust pipe, a control mechanism and a clamping mechanism are arranged inside the equipment. Before use, the flange plate is placed on the top of the fixed ring, and the exhaust pipe is placed on the top of the flange plate. Among them, since the space between the housing, the piston plate and the fixed ring is a closed space, after the electric telescopic rod is powered on, the electric telescopic rod contracts, driving the piston plate to slide downward along the inner wall of the housing, so that the above closed space is converted into a low pressure, and the pressure generated by the low pressure will force a plurality of piston square plates to slide outward along the inner walls of the corresponding piston grooves. The piston square plate drives the arc-shaped rod to move outward synchronously through the first fixing block, the telescopic spring rod and the second fixing block, so that the arc surfaces of the arc-shaped rods contact the inner wall of the flange plate, and at the same time, the plurality of arc-shaped rods will also contact the inner wall of the exhaust pipe. The plurality of outwardly expanding arc-shaped rods will force the centers of the flange plate and the exhaust pipe to be on the same horizontal plane. Through the application of the above components, the equipment can reduce the strange shape of the flange plate, position the center positions of the flange plate and the exhaust pipe, and improve the positioning efficiency of the equipment.

[0007] Preferably, the limiting component includes a first hydraulic telescopic rod fixedly connected to the side wall of the piston square plate. One end of the first hydraulic telescopic rod away from the piston square plate is fixedly connected to the inner wall of the housing. A collecting ring pipe is connected through the side wall of the first hydraulic telescopic rod.

[0008] Preferably, the limiting component further includes a plurality of transmission pipes connected through the top of the collecting ring pipe. One ends of the plurality of transmission pipes away from the collecting ring pipe are connected through a third fixing block. The bottom of the third fixing block is fixedly connected to the top of the housing.

[0009] Preferably, the limiting component further includes a second hydraulic telescopic rod connected through the side wall of the third fixing block. One end of the second hydraulic telescopic rod away from the third fixing block is rotatably connected to a contact plate. A supporting component is fixedly connected to the top of the third fixing block. By utilizing the characteristic that the piston square plate slides outward along the inner wall of the piston groove, a limiting component is arranged inside the device. When the piston square plate slides outward, the distance between the piston square plate and the inner wall of the housing decreases. At this time, the first hydraulic telescopic rod will be compressed and contracted, forcing the liquid inside the plurality of first hydraulic telescopic rods to enter the collecting ring pipe, and then be transmitted from the collecting ring pipe to the inside of the second hydraulic telescopic rods through the transmission pipes, forcing the plurality of second hydraulic telescopic rods to extend outward. The second hydraulic telescopic rods also carry the contact plate to contact the outer wall of the flange.

[0010] Preferably, the supporting component includes an L-shaped rod slidably connected to the top of the third fixing block. One end of the L-shaped rod away from the third fixing block is fixedly connected to a compression spring rod. One end of the compression spring rod away from the L-shaped rod is fixedly connected to an L-shaped fixing block. The liquid inside the plurality of first hydraulic telescopic rods first collectively enters the collecting ring pipe, and then is dispersed to the plurality of second hydraulic telescopic rods. When some of the second hydraulic telescopic rods first contact the outer wall of the flange during the extension process, the remaining second hydraulic telescopic rods can continue to extend, enabling the plurality of second hydraulic telescopic rods to push the contact plate to completely fit on the outer wall of the flange, avoiding the uneven pressure on the outer wall of the flange caused by the irregular outer wall of the flange and affecting the positioning accuracy of the device.

[0011] Preferably, the supporting component further includes a sliding track fixedly connected to the side wall of the L-shaped fixing block. A slide rail is slidably connected to the inner wall of the sliding track. Five slide rails are slidably connected to the inner walls of the sliding tracks. By utilizing the characteristic that the plurality of third fixing blocks approach each other, a supporting component is arranged inside the device. When the third fixing blocks approach each other, the third fixing blocks drive the compression spring rod and the L-shaped fixing block to approach the center of the fixed ring through the L-shaped rod. The L-shaped fixing block will drive the corresponding sliding track to contact the outer wall of the exhaust pipe, forming a clamping process on the outer wall of the exhaust pipe, avoiding the center of gravity deviation of the exhaust pipe caused by the irregular shape of the exhaust pipe and the inclination of the exhaust pipe during the welding of the device, resulting in the deviation of the welding position between the exhaust pipe and the flange.

[0012] Preferably, the support assembly further includes a motor slidably connected to the inner wall of the slide rail. A rubber wheel is rotatably connected to the side wall of the motor, and a welding gun is fixedly connected to the bottom of the motor. The outer wall of the piston plate is slidably connected to the inner wall of the housing. When the above equipment operates, taking advantage of the characteristic that the distance between multiple slide rails decreases, a motor is arranged inside the equipment. After the slide rails complete clamping, the distance between multiple slide rails decreases. During this process, the slide rail will slide along the inner wall of the slide rail, causing multiple slide rails and the slide rail to form a retractable circular track. Subsequently, the power supply of the motor is turned on. The motor drives the motor to slide along the inner wall of the center track through the rubber wheel. At this time, the welding gun fixed to the bottom of the motor will weld the gap between the flange and the exhaust pipe. Through the application of the above components, the distance between the welding gun and the welding gap is always kept consistent, ensuring the subsequent welding quality.

[0013] A method for using a clamping mechanism for welding the flange at the end of an automobile exhaust pipe includes the following steps:

[0014] S1: Place the raw materials;

[0015] S2: Turn on the power supply;

[0016] S3: Start welding.

[0017] The present invention has the following beneficial effects:

[0018] (1) The present invention takes advantage of the characteristic that the diameter of the hole in the flange is equal to the inner diameter of the exhaust pipe. A control mechanism and a clamping mechanism are arranged inside the equipment. Before use, the flange is placed on the top of the fixed ring, and the exhaust pipe is placed on the top of the flange. Among them, since the space between the housing, the piston plate and the fixed ring is a closed space, after the electric telescopic rod is powered on, the electric telescopic rod contracts, driving the piston plate to slide downward along the inner wall of the housing, causing the above closed space to transform into a low pressure. The pressure generated by the low pressure will force multiple piston square plates to slide outward along the inner wall of the corresponding piston grooves. The piston square plates drive the arc-shaped rods to move outward synchronously through the first fixing block, the telescopic spring rod and the second fixing block, so that the arc surfaces of the respective arc-shaped rods contact the inner wall of the flange. At the same time, multiple arc-shaped rods will also contact the inner wall of the exhaust pipe. The multiple outwardly expanding arc-shaped rods will force the centers of the flange and the exhaust pipe to be on the same horizontal plane. Through the application of the above components, the equipment can reduce the strange shape of the flange, position the center positions of the flange and the exhaust pipe, and improve the positioning efficiency of the equipment.

[0019] (2) By taking advantage of the feature that the above-mentioned piston square plate slides outward along the inner wall of the piston groove, a limiting component is arranged inside the device. When the piston square plate slides outward, the distance between the piston square plate and the inner wall of the outer shell decreases. At this time, the first hydraulic telescopic rod will be compressed and contracted, forcing the liquid inside multiple first hydraulic telescopic rods to enter the collecting ring pipe, and then be transmitted to the inside of the second hydraulic telescopic rods through the transmission pipe, forcing multiple second hydraulic telescopic rods to extend outward. The second hydraulic telescopic rods also carry the contact plate to contact the outer wall of the flange. Among them, the liquid inside multiple first hydraulic telescopic rods first collectively enters the collecting ring pipe and then disperses to multiple second hydraulic telescopic rods. When some of the second hydraulic telescopic rods first contact the outer wall of the flange during the extension process, the remaining second hydraulic telescopic rods can continue to extend, enabling multiple second hydraulic telescopic rods to push the contact plate to completely fit on the outer wall of the flange, avoiding the uneven pressure on the outer wall of the irregular flange, which may affect the positioning accuracy of the device.

[0020] (3) By taking advantage of the feature that the above-mentioned multiple third fixing blocks approach each other, a supporting component is arranged inside the device. When the third fixing blocks approach each other, the third fixing blocks drive the compression spring rod and the L-shaped fixing block to approach the center of the fixed ring through the L-shaped rod. The L-shaped fixing block will drive the corresponding sliding track to contact the outer wall of the exhaust pipe, forming a clamping process on the outer wall of the exhaust pipe, avoiding the offset of the center of gravity of the exhaust pipe caused by the irregular shape of the exhaust pipe, and the inclination of the exhaust pipe during the welding of the device, resulting in the offset of the welding position between the exhaust pipe and the flange.

[0021] (4) By taking advantage of the feature that the distance between multiple sliding tracks decreases when the device is running, a motor is arranged inside the device. After the sliding tracks complete the clamping, the distance between multiple sliding tracks decreases. During this process, the slide rail will slide along the inner wall of the sliding track, enabling multiple sliding tracks and the slide rail to form a retractable circular track. Subsequently, the power supply of the motor is turned on, and the motor drives the motor to slide along the inner wall of the circular track through the rubber wheel. At this time, the welding gun fixed at the bottom of the motor will weld the gap between the flange and the exhaust pipe. Through the application of the above components, the distance between the welding gun and the welding gap always remains the same, ensuring the subsequent welding quality. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 3 This is a schematic cross-sectional view of the control mechanism of the present invention;

[0026] Figure 4 This is the present invention Figure 3 An enlarged schematic diagram of A in;

[0027] Figure 5 This is a schematic cross-sectional view of the limit component of the present invention;

[0028] Figure 6 This is a schematic diagram of the support component of the present invention;

[0029] Figure 7 This is a schematic diagram of the internal components of the support component of the present invention;

[0030] Figure 8 This is a schematic diagram of the working process of the present invention.

[0031] In the drawings, the list of components represented by each reference numeral is as follows:

[0032] In the figure: 1, outer shell; 11, bottom plate; 12, electric telescopic rod; 13, piston plate; 2, control mechanism; 21, fixed ring; 22, piston groove; 23, flange; 24, exhaust pipe; 3, clamping mechanism; 31, piston square plate; 32, first fixed block; 33, telescopic spring rod; 34, second fixed block; 35, arc rod; 4, limit component; 41, first hydraulic telescopic rod; 42, collection ring pipe; 43, transmission pipe; 44, third fixed block; 45, second hydraulic telescopic rod; 46, contact plate; 5, support component; 51, L-shaped rod; 52, compression spring rod; 53, L-shaped fixed block; 54, sliding track; 55, slide rail; 56, motor; 57, rubber wheel; 58, welding gun. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Example 1, please refer to Figure 1 - Figure 4 , the present invention is a clamping mechanism for flange welding at the end of an automobile exhaust pipe, including an outer shell 1, the bottom of the outer shell 1 is fixedly connected to a bottom plate 11, the top of the bottom plate 11 is fixedly connected to an electric telescopic rod 12, and the end of the electric telescopic rod 12 away from the bottom plate 11 is fixedly connected to a piston plate 13;

[0035] The control mechanism 2, the control mechanism 2 includes a fixed ring 21 fixedly connected to the inner wall of the housing 1. A plurality of piston grooves 22 are formed in the side wall of the fixed ring 21. A flange plate 23 is placed on the top of the fixed ring 21, and an exhaust pipe 24 is placed on the top of the flange plate 23;

[0036] The clamping mechanism 3, the clamping mechanism 3 includes a piston square plate 31 slidably connected to the inner walls of a plurality of piston grooves 22. A first fixing block 32 is fixedly connected to the side wall of the piston square plate 31. The other end of the first fixing block 32 is fixedly connected to a telescopic spring rod 33. The end of the telescopic spring rod 33 far from the first fixing block 32 is fixedly connected to a second fixing block 34. An arc-shaped rod 35 is fixedly connected to the top of the second fixing block 34. A limiting component 4 is fixedly connected to the side wall of the piston square plate 31. By using the characteristic that the diameter of the hole of the flange plate 23 is equal to the inner diameter of the exhaust pipe 24, the control mechanism 2 and the clamping mechanism 3 are arranged inside the device. Before use, the flange plate 23 is placed on the top of the fixed ring 21, and the exhaust pipe 24 is placed on the top of the flange plate 23. Among them, since the space between the housing 1, the piston plate 13 and the fixed ring 21 is a closed space, after the electric telescopic rod 12 is powered on, the electric telescopic rod 12 contracts, driving the piston plate 13 to slide downward along the inner wall of the housing 1, making the above-mentioned closed space transform into a low pressure. The pressure generated by the low pressure will force a plurality of piston square plates 31 to slide outward along the inner walls of the corresponding piston grooves 22. The piston square plate 31 drives the arc-shaped rod 35 to move outward synchronously through the first fixing block 32, the telescopic spring rod 33 and the second fixing block 34, so that the arc surfaces of the respective arc-shaped rods 35 are in contact with the inner wall of the flange plate 23. At the same time, a plurality of arc-shaped rods 35 will also be in contact with the inner wall of the exhaust pipe 24. The plurality of outwardly expanding arc-shaped rods 35 will force the centers of the flange plate 23 and the exhaust pipe 24 to be on the same horizontal plane. Through the application of the above components, the device can reduce the strange shape of the flange plate 23, position the center positions of the flange plate 23 and the exhaust pipe 24, and improve the positioning efficiency of the device.

[0037] Embodiment 2, please refer to Figure 5 - Figure 8 , the present invention is a clamping mechanism for welding the flange at the end of an automobile exhaust pipe. On the basis of Embodiment 1, the limiting component 4 includes a first hydraulic telescopic rod 41 fixedly connected to the side wall of the piston square plate 31. The end of the first hydraulic telescopic rod 41 far from the piston square plate 31 is fixedly connected to the inner wall of the housing 1. A collecting ring pipe 42 is connected through the side wall of the first hydraulic telescopic rod 41.

[0038] The limiting component 4 further includes a plurality of transmission pipes 43 connected through the top of the collecting ring pipe 42. The ends of the plurality of transmission pipes 43 far from the collecting ring pipe 42 are connected through a third fixing block 44. The bottom of the third fixing block 44 is fixedly connected to the top of the housing 1.

[0039] The limiting component 4 further includes a second hydraulic telescopic rod 45 penetrating and connected to the side wall of the third fixed block 44. One end of the second hydraulic telescopic rod 45 away from the third fixed block 44 is rotatably connected to a contact plate 46. A support component 5 is fixedly connected to the top of the third fixed block 44. Utilizing the characteristic that the piston square plate 31 slides outward along the inner wall of the piston groove 22, a limiting component 4 is arranged inside the device. When the piston square plate 31 slides outward, the distance between the piston square plate 31 and the inner wall of the housing 1 decreases. At this time, the first hydraulic telescopic rods 41 will be compressed and contracted, forcing the liquid inside the multiple first hydraulic telescopic rods 41 to enter the collecting ring pipe 42, and then be transmitted from the collecting ring pipe 42 to the inside of the second hydraulic telescopic rod 45 through the transmission pipe 43, forcing the multiple second hydraulic telescopic rods 45 to extend outward. The second hydraulic telescopic rods 45 also carry the contact plate 46 to contact the outer wall of the flange 23.

[0040] The support component 5 includes an L-shaped rod 51 slidably connected to the top of the third fixed block 44. One end of the L-shaped rod 51 away from the third fixed block 44 is fixedly connected to a compression spring rod 52. One end of the compression spring rod 52 away from the L-shaped rod 51 is fixedly connected to an L-shaped fixed block 53. The liquid inside the multiple first hydraulic telescopic rods 41 first collectively enters the collecting ring pipe 42, and then is dispersed to the multiple second hydraulic telescopic rods 45. When some of the second hydraulic telescopic rods 45 come into contact with the outer wall of the flange 23 first during the extension process, the remaining second hydraulic telescopic rods 45 can continue to extend, enabling the multiple second hydraulic telescopic rods 45 to push the contact plate 46 to completely fit on the outer wall of the flange 23, avoiding the uneven pressure on the outer wall of the irregular flange 23 and affecting the positioning accuracy of the device.

[0041] The support component 5 further includes a sliding track 54 fixedly connected to the side wall of the L-shaped fixed block 53. A slide rail 55 is slidably connected to the inner wall of the sliding track 54. Five slide rails 55 are slidably connected to the inner walls of the five sliding tracks 54. Utilizing the characteristic that the multiple third fixed blocks 44 approach each other, a support component 5 is arranged inside the device. When the multiple third fixed blocks 44 approach each other, the third fixed blocks 44 drive the compression spring rod 52 and the L-shaped fixed block 53 to approach the center of the fixed ring 21 through the L-shaped rod 51. The L-shaped fixed block 53 will drive the corresponding sliding track 54 to contact the outer wall of the exhaust pipe 24, forming a clamping process on the outer wall of the exhaust pipe 24, avoiding the uneven center of gravity of the exhaust pipe 24 caused by its irregular shape and the inclination of the exhaust pipe 24 during the welding of the device, resulting in the deviation of the welding position between the exhaust pipe 24 and the flange 23.

[0042] The support component 5 further includes a motor 56 slidably connected to the inner wall of the slide rail 55. A rubber wheel 57 is rotatably connected to the side wall of the motor 56. A welding gun 58 is fixedly connected to the bottom of the motor 56. The outer wall of the piston plate 13 is slidably connected to the inner wall of the housing 1. When the above equipment operates, taking advantage of the characteristic that the distance between multiple sliding tracks 54 decreases, a motor 56 is arranged inside the equipment. After the sliding tracks 54 complete clamping, the distance between multiple sliding tracks 54 decreases. During this process, the slide rail 55 will slide along the inner wall of the sliding track 54, causing multiple sliding tracks 54 and the slide rail 55 to form a retractable circular track. Subsequently, the power supply of the motor 56 is turned on. The motor 56 drives the motor 56 to slide along the inner wall of the circular track through the rubber wheel 57. At this time, the welding gun 58 fixed to the bottom of the motor 56 will weld the gap between the flange 23 and the exhaust pipe 24. Through the application of the above components, the distance between the welding gun 58 and the welding gap is always kept consistent, ensuring the subsequent welding quality.

[0043] The usage method of the clamping mechanism for welding includes the following steps:

[0044] S1: Place the raw materials;

[0045] S2: Turn on the power supply;

[0046] S3: Start welding.

[0047] A specific application of this embodiment is as follows: Before use, place the flange 23 on the top of the fixed ring 21 and place the exhaust pipe 24 on the top of the flange 23. Among them, since the space between the housing 1, the piston plate 13, and the fixed ring 21 is a closed space, after the electric telescopic rod 12 is powered on, the electric telescopic rod 12 contracts, driving the piston plate 13 to slide downward along the inner wall of the housing 1, causing the above closed space to transform into a low pressure. The pressure generated by the low pressure will force multiple piston square plates 31 to slide outward along the inner walls of the corresponding piston grooves 22. The piston square plates 31 drive the arc-shaped rods 35 to move outward synchronously through the fixing blocks one 32, the telescopic spring rods 33, and the fixing blocks two 34, making the arcs of the respective arc-shaped rods 35 contact the inner wall of the flange 23. At the same time, multiple arc-shaped rods 35 will also contact the inner wall of the exhaust pipe 24. The multiple outward-expanding arc-shaped rods 35 will force the centers of the flange 23 and the exhaust pipe 24 to be on the same horizontal plane. Through the application of the above components, the equipment can reduce the strange shape of the flange 23, position the center positions of the flange 23 and the exhaust pipe 24, and improve the positioning efficiency of the equipment.

[0048] Taking advantage of the feature that the above-mentioned piston square plate 31 slides outward along the inner wall of the piston groove 22, a limiting component 4 is arranged inside the device. When the piston square plate 31 slides outward, the distance between the piston square plate 31 and the inner wall of the outer shell 1 decreases. At this time, the first hydraulic telescopic rod 41 will be compressed and contracted, forcing the liquid inside the multiple first hydraulic telescopic rods 41 to enter the inside of the collecting ring pipe 42, and then be transmitted from the collecting ring pipe 42 to the inside of the second hydraulic telescopic rod 45 through the transmission pipe 43, forcing the multiple second hydraulic telescopic rods 45 to extend outward. The second hydraulic telescopic rods 45 also carry the contact plate 46 to contact the outer wall of the flange 23. Among them, the liquid inside the multiple first hydraulic telescopic rods 41 first collectively enters the inside of the collecting ring pipe 42, and then is dispersed to the multiple second hydraulic telescopic rods 45, so that when some of the second hydraulic telescopic rods 45 first contact the outer wall of the flange 23 during the extension process, the remaining second hydraulic telescopic rods 45 can continue to extend, enabling the multiple second hydraulic telescopic rods 45 to push the contact plate 46 to completely fit on the outer wall of the flange 23, avoiding the uneven pressure on the outer wall of the irregular flange 23 and affecting the positioning accuracy of the device.

[0049] Taking advantage of the feature that the above-mentioned multiple third fixing blocks 44 approach each other, a supporting component 5 is arranged inside the device. When the third fixing blocks 44 approach each other, the third fixing blocks 44 drive the compression spring rod 52 and the L-shaped fixing block 53 to approach the center of the fixing ring 21 through the L-shaped rod 51. The L-shaped fixing block 53 will drive the corresponding sliding track 54 to contact the outer wall of the exhaust pipe 24, forming a clamping process on the outer wall of the exhaust pipe 24, avoiding the center of gravity deviation of the exhaust pipe 24 caused by the irregular shape of the exhaust pipe 24 and the inclination of the exhaust pipe 24 during the welding of the device, resulting in the deviation of the welding position between the exhaust pipe 24 and the flange 23. Taking advantage of the feature that the distance between the multiple sliding tracks 54 decreases during the operation of the above-mentioned device, a motor 56 is arranged inside the device. After the sliding tracks 54 complete the clamping, the distance between the multiple sliding tracks 54 decreases. During this process, the slide rail 55 will slide along the inner wall of the sliding track 54, enabling the multiple sliding tracks 54 and the slide rail 55 to form a retractable circular track. Subsequently, the power supply of the motor 56 is turned on, and the motor 56 drives the motor 56 to slide along the inner wall of the circular track through the rubber wheel 57. At this time, the welding gun 58 fixed at the bottom of the motor 56 will weld the gap between the flange 23 and the exhaust pipe 24. Through the application of the above components, the distance between the welding gun 58 and the welding gap is always kept consistent, ensuring the subsequent welding quality.

[0050] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A clamping mechanism for welding the end flange of an automobile exhaust pipe, comprising a housing (1), a bottom plate (11) fixedly connected to the bottom of the housing (1), an electric telescopic rod (12) fixedly connected to the top of the bottom plate (11), and a piston plate (13) fixedly connected to the end of the electric telescopic rod (12) away from the bottom plate (11), characterized in that, It further includes: A control mechanism (2), the control mechanism (2) includes a fixed ring (21) fixedly connected to the inner wall of the housing (1), several piston grooves (22) are opened on the side wall of the fixed ring (21), a flange plate (23) is placed on the top of the fixed ring (21), and an exhaust pipe (24) is placed on the top of the flange plate (23); A clamping mechanism (3), the clamping mechanism (3) includes a piston square plate (31) slidably connected to the inner walls of several piston grooves (22), a first fixing block (32) is fixedly connected to the side wall of the piston square plate (31), the other end of the first fixing block (32) is fixedly connected to a telescopic spring rod (33), the end of the telescopic spring rod (33) far from the first fixing block (32) is fixedly connected to a second fixing block (34), an arc-shaped rod (35) is fixedly connected to the top of the second fixing block (34), and a limiting component (4) is fixedly connected to the side wall of the piston square plate (31); The limiting component (4) includes a first hydraulic telescopic rod (41) fixedly connected to the side wall of the piston square plate (31), the end of the first hydraulic telescopic rod (41) far from the piston square plate (31) is fixedly connected to the inner wall of the housing (1), and a collecting ring pipe (42) is connected through the side wall of the first hydraulic telescopic rod (41); The limiting component (4) further includes several transmission pipes (43) connected through the top of the collecting ring pipe (42), the ends of several transmission pipes (43) far from the collecting ring pipe (42) are connected through a third fixing block (44), and the bottom of the third fixing block (44) is fixedly connected to the top of the housing (1); The limiting component (4) further includes a second hydraulic telescopic rod (45) connected through the side wall of the third fixing block (44), the end of the second hydraulic telescopic rod (45) far from the third fixing block (44) is rotatably connected to a contact plate (46), and a supporting component (5) is fixedly connected to the top of the third fixing block (44).

2. The clamping mechanism for welding the end flange of an automobile exhaust pipe according to claim 1, characterized in that: The supporting component (5) includes an L-shaped rod (51) slidably connected to the top of the third fixing block (44), a compression spring rod (52) is fixedly connected to the end of the L-shaped rod (51) far from the third fixing block (44), and an L-shaped fixing block (53) is fixedly connected to the end of the compression spring rod (52) far from the L-shaped rod (51).

3. A clamping mechanism for welding the end flange of an automobile exhaust pipe according to claim 2, characterized in that: The supporting component (5) further includes a sliding track (54) fixedly connected to the side wall of the L-shaped fixing block (53), a slide rail (55) is slidably connected to the inner wall of the sliding track (54), and a slide rail (55) is slidably connected to the inner walls of five sliding tracks (54).

4. A clamping mechanism for welding the end flange of an automobile exhaust pipe according to claim 3, characterized in that: The supporting component (5) further includes a motor (56) slidably connected to the inner wall of the slide rail (55), a rubber wheel (57) is rotatably connected to the side wall of the motor (56), a welding gun (58) is fixedly connected to the bottom of the motor (56), and the outer wall of the piston plate (13) is slidably connected to the inner wall of the housing (1).

5. A method of using a clamping mechanism for welding the end flange of an automobile exhaust pipe, which uses a clamping mechanism for welding the end flange of an automobile exhaust pipe as described in claim 4, characterized in that: It includes the following steps: S1: Place the raw materials; S2: Connect the power supply; S3: Start welding.

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