Clamping mechanism for welding flange at end part of automobile exhaust pipe and using method of clamping mechanism

Abstract

The invention relates to the technical field of welding clamping, and discloses a clamping mechanism for welding an end flange of an automobile exhaust pipe and a using method thereof.The clamping mechanism comprises a shell, a bottom plate is fixedly connected to the bottom of the shell, an electric telescopic rod is fixedly connected to the top of the bottom plate, and after the electric telescopic rod is powered on, the electric telescopic rod shrinks; the piston plate is driven to slide downwards along the inner wall of the shell, the multiple piston square plates are forced to slide outwards along the inner walls of the corresponding piston grooves, the piston square plates drive the cambered-surface rods to synchronously move outwards through the first fixing blocks, the telescopic spring rods and the second fixing blocks, and the cambered surfaces of the cambered-surface rods make contact with the inner wall of the flange plate; and meanwhile, the arc-surface rods make contact with the inner wall of the exhaust pipe, the arc-surface rods expanding outwards force the circle center of the flange plate and the circle center of the exhaust pipe to be located on the same horizontal plane, the singular appearance of the flange plate can be reduced, the center position of the flange plate and the center position of the exhaust pipe can be positioned, and the positioning efficiency of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding clamping equipment, in particular to a clamping mechanism for welding a flange at an end of an automobile exhaust pipe and a use method thereof. Background Art

[0002] The automobile exhaust system refers to the system that collects and discharges exhaust gas, which is generally composed of exhaust manifold, exhaust pipe, catalyst assembly, muffler, flange, etc.

[0003] Among them, in order to adapt to the compact design of the bottom of the vehicle, the shape of some flanges is not a regular circle, which makes it difficult for the center point of the flange to coincide with the center position of the exhaust pipe, and requires manual fine-tuning later. The following solutions are proposed to address the above problems. Summary of the invention

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

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

[0006] The clamping mechanism comprises a piston square plate slidably connected to the inner walls of several piston grooves, a fixed block 1 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 fixed block 1, a fixed block 2 is fixedly connected to the end of the telescopic spring rod away from the fixed block 1, a curved rod is fixedly connected to the top of the fixed block 2, a limited position component is fixedly connected to the side wall of the piston square plate, and a control mechanism and a clamping mechanism are arranged inside the equipment by utilizing the characteristic that the hole of the flange plate and the inner wall of the exhaust pipe have equal diameters. Before use, the flange plate is placed on the top of the fixing ring, and the exhaust pipe is placed on the top of the flange plate. Since the space between the outer shell, the piston plate and the fixing ring is a closed space, the electric telescopic rod After the power is turned on, the electric telescopic rod contracts, driving the piston plate to slide downward along the inner wall of the shell, so that the above enclosed space is transformed into low pressure, and the pressure generated by the low pressure will force multiple piston square plates to slide outward along the corresponding inner walls of the piston grooves. The piston square plate drives the arc rods to move outward synchronously through the fixed block 1, the telescopic spring rod, and the fixed block 2, so that the arc surface of each arc rod contacts the inner wall of the flange. At the same time, the multiple arc rods will contact the inner wall of the exhaust pipe. The multiple arc rods expanding outward will force the flange and the center of 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, locate the center position of the flange and the exhaust pipe, and improve the positioning efficiency of the equipment.

[0007] Preferably, the limiting assembly includes a hydraulic telescopic rod 1 fixedly connected to the side wall of the piston square plate, one end of the hydraulic telescopic rod 1 away from the piston square plate is fixedly connected to the inner wall of the shell, and a collecting ring tube is connected through the side wall of the hydraulic telescopic rod 1.

[0008] Preferably, the limiting assembly also includes a plurality of transmission tubes connected through the top of the collecting ring tube, and one end of the plurality of transmission tubes away from the collecting ring tube is connected through a fixing block three, and the bottom of the fixing block three is fixedly connected to the top of the shell.

[0009] Preferably, the limit assembly also includes a hydraulic telescopic rod 2 which is connected through the side wall of the fixed block 3. The end of the hydraulic telescopic rod 2 away from the fixed block 3 is rotatably connected to a contact plate, and the top of the fixed block 3 is fixedly connected to a support assembly. Utilizing the characteristic that the above-mentioned piston square plate slides outward along the inner wall of the piston groove, a limit assembly is arranged inside the equipment. When the piston square plate slides outward, the distance between the piston square plate and the inner wall of the outer shell is reduced. At this time, the hydraulic telescopic rod 1 will be compressed and contracted, forcing the internal liquid of multiple hydraulic telescopic rods 1 to enter the interior of the collecting ring tube, and be transmitted from the collecting ring tube to the interior of the hydraulic telescopic rod 2 through the transmission pipe, forcing the multiple hydraulic telescopic rods 2 to extend outward, and the hydraulic telescopic rod 2 also carries the contact plate to contact the outer wall of the flange.

[0010] Preferably, the support assembly includes an L-shaped rod slidably connected to the top of the fixed block three, the end of the L-shaped rod away from the fixed block three is fixedly connected to a compression spring rod, and the end of the compression spring rod away from the L-shaped rod is fixedly connected to the L-shaped fixed block. The liquid inside the multiple hydraulic telescopic rods 1 first collectively enters the inside of the collecting ring tube, and then disperses to the multiple hydraulic telescopic rods 2, so that when some of the hydraulic telescopic rods 2 are in contact with the outer wall of the flange during the extension process, the remaining hydraulic telescopic rods 2 can continue to extend, so that the multiple hydraulic telescopic rods 2 can push the contact plate to completely fit the outer wall of the flange, avoiding irregular outer wall of the flange, resulting in uneven pressure on the outer wall of the flange, and affecting the accuracy of equipment positioning.

[0011] Preferably, the support assembly also includes a sliding track fixedly connected to the side wall of the L-shaped fixed block, the inner wall of the sliding track is slidably connected to the sliding track, and the inner walls of the five sliding tracks are slidably connected to the sliding track. Utilizing the characteristics of the above-mentioned multiple fixed blocks three being close to each other, a support assembly is arranged inside the equipment, wherein when the fixed blocks three are close to each other, the fixed block three drives the compression spring rod and the L-shaped fixed block to approach the center of the fixed ring through the L-shaped rod, and the L-shaped fixed block will drive the corresponding sliding track to contact the outer wall of the exhaust pipe, forming a clamping process for the outer wall of the exhaust pipe, thereby avoiding the irregular shape of the exhaust pipe causing the center of gravity of the exhaust pipe to shift, and the exhaust pipe to tilt when the equipment is welded, causing the welding position between the exhaust pipe and the flange to shift.

[0012] Preferably, the support assembly also 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, 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 outer shell, and utilizing the characteristic that the distance between multiple sliding rails is reduced when the above-mentioned equipment is running, a motor is arranged inside the equipment, and after the sliding rails complete clamping, the distance between the multiple sliding rails is reduced. During this process, the slide rails will slide along the inner wall of the slide rails, so that the multiple sliding rails and the slide rails form a retractable circular track, and then, the motor power 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-mentioned components, the distance between the welding gun and the welding gap is always consistent, thereby ensuring the subsequent welding quality.

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

[0014] S1: Place raw materials;

[0015] S2: Turn on the power;

[0016] S3: Start welding.

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

[0018] (1) The present invention utilizes the characteristic that the diameter of the hole of the flange is equal to that of the inner wall of the exhaust pipe, and a control mechanism and a clamping mechanism are arranged inside the device. Before use, the flange is placed on the top of the fixing ring, and the exhaust pipe is placed on the top of the flange. Since the space between the outer shell, the piston plate and the fixing 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 outer shell, so that the above closed space is converted into a low pressure. The pressure generated by the low pressure will force multiple piston square plates to slide outward along the corresponding inner walls of the piston grooves. The piston square plates drive the arc rods to move outward synchronously through the fixing block 1, the telescopic spring rod and the fixing block 2, so that the arc surface of each arc rod contacts the inner wall of the flange. At the same time, the multiple arc rods will contact the inner wall of the exhaust pipe. The multiple arc rods expanding outward will force the center of the flange and the exhaust pipe to be on the same horizontal plane. Through the application of the above components, the device can reduce the strange shape of the flange, locate the center position of the flange and the exhaust pipe, and improve the positioning efficiency of the device.

[0019] (2) The present invention utilizes the characteristic that the piston square plate slides outward along the inner wall of the piston groove, and sets a limit position component inside the equipment. When the piston square plate slides outward, the distance between the piston square plate and the inner wall of the outer shell is reduced. At this time, the hydraulic telescopic rod 1 will be compressed and contracted, forcing the internal liquid of multiple hydraulic telescopic rods 1 to enter the interior of the collecting ring tube, and be transmitted from the collecting ring tube to the interior of the hydraulic telescopic rod 2 through the transmission tube, forcing the multiple hydraulic telescopic rods 2 to extend outward. The hydraulic telescopic rod 2 also carries the contact plate to contact the outer wall of the flange. Among them, the liquid inside the multiple hydraulic telescopic rods 1 first collectively enters the interior of the collecting ring tube, and then disperses to the multiple hydraulic telescopic rods 2, so that when some of the hydraulic telescopic rods 2 first contact the outer wall of the flange during the extension process, the remaining hydraulic telescopic rods 2 can continue to extend, so that the multiple hydraulic telescopic rods 2 can push the contact plate to completely fit the outer wall of the flange, avoiding the irregular outer wall of the flange, resulting in uneven pressure on the outer wall of the flange, and affecting the positioning accuracy of the equipment.

[0020] (3) The present invention utilizes the characteristic that the above-mentioned multiple fixing blocks are close to each other, and a support assembly is arranged inside the equipment, wherein when the fixing blocks are close to each other, the fixing blocks drive the compression spring rod and the L-shaped fixing block to approach the center of the fixing ring through the L-shaped rod, and the L-shaped fixing block drives the corresponding sliding track to contact the outer wall of the exhaust pipe, forming a clamping process for the outer wall of the exhaust pipe, thereby preventing the irregular shape of the exhaust pipe from causing the center of gravity of the exhaust pipe to shift, and the exhaust pipe to tilt during welding, resulting in the welding position between the exhaust pipe and the flange to shift.

[0021] (4) The present invention utilizes the characteristic that the distance between multiple sliding rails is reduced when the above-mentioned equipment is running. A motor is arranged inside the equipment. After the sliding rails complete clamping, the distance between the multiple sliding rails is reduced. During this process, the sliding rails will slide along the inner wall of the sliding rails, so that the multiple sliding rails and the sliding rails form a retractable circular rail. Subsequently, the motor power 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-mentioned components, the distance between the welding gun and the welding gap is always consistent, thereby 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 described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

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

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

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

[0026] Figure 4 For the present invention Figure 3 A is an enlarged schematic diagram;

[0027] Figure 5 It is a cross-sectional schematic diagram of the limiting component of the present invention;

[0028] Figure 6 It is a schematic diagram of the support assembly of the present invention;

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

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

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] In the figure: 1. shell; 11. bottom plate; 12. electric telescopic rod; 13. piston plate; 2. control mechanism; 21. fixing ring; 22. piston groove; 23. flange; 24. exhaust pipe; 3. clamping mechanism; 31. piston square plate; 32. fixing block one; 33. telescopic spring rod; 34. fixing block two; 35. arc rod; 4. limit assembly; 41. hydraulic telescopic rod one; 42. collecting ring tube; 43. transmission tube; 44. fixing block three; 45. hydraulic telescopic rod two; 46. contact plate; 5. support assembly; 51. L-shaped rod; 52. compression spring rod; 53. L-shaped fixing block; 54. sliding track; 55. slide rail; 56. motor; 57. rubber wheel; 58. welding gun. 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] For example, see Figure 1 - Figure 4 The present invention is a clamping mechanism for welding the end flange of an automobile exhaust pipe, comprising a housing 1, a bottom plate 11 being fixedly connected to the bottom of the housing 1, an electric telescopic rod 12 being fixedly connected to the top of the bottom plate 11, and a piston plate 13 being fixedly connected to one end of the electric telescopic rod 12 away from the bottom plate 11;

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

[0036] The clamping mechanism 3 includes a piston square plate 31 slidably connected to the inner walls of a plurality of piston grooves 22, a fixed block 1 32 is fixedly connected to the side wall of the piston square plate 31, a telescopic spring rod 33 is fixedly connected to the other end of the fixed block 1 32, a fixed block 2 34 is fixedly connected to the end of the telescopic spring rod 33 away from the fixed block 1 32, a curved rod 35 is fixedly connected to the top of the fixed block 24, and a limited position component 4 is fixedly connected to the side wall of the piston square plate 31. By utilizing the characteristic that the hole of the flange 23 and the inner wall of the exhaust pipe 24 have equal diameters, a control mechanism 2 and a clamping mechanism 3 are arranged inside the device. Before use, the flange 23 is placed on the top of the fixing ring 21, and the exhaust pipe 24 is placed on the top of the flange 23. In the electric extension, the space between the housing 1, the piston plate 13 and the fixing ring 21 is a closed space. After the retracting 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 shell 1, so that the above enclosed space is converted to low pressure, and the pressure generated by the low pressure will force multiple piston square plates 31 to slide outward along the corresponding inner walls of the piston groove 22. The piston square plate 31 drives the arc rods 35 to move outward synchronously through the fixed block 1 32, the telescopic spring rod 33, and the fixed block 2 34, so that the arc surface of each arc rod 35 contacts the inner wall of the flange 23. At the same time, the multiple arc rods 35 will contact the inner wall of the exhaust pipe 24. The multiple outwardly expanding arc rods 35 will force the center 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, locate the center position of the flange 23 and the exhaust pipe 24, and improve the positioning efficiency of the equipment.

[0037] For example 2, please refer to Figure 5 - Figure 8 The present invention is a clamping mechanism for welding the end flange of an automobile exhaust pipe. On the basis of the first embodiment, the limiting assembly 4 includes a hydraulic telescopic rod 41 fixedly connected to the side wall of the piston square plate 31, and one end of the hydraulic telescopic rod 41 away from the piston square plate 31 is fixedly connected to the inner wall of the shell 1, and a collecting ring pipe 42 is connected through the side wall of the hydraulic telescopic rod 41.

[0038] The limiting assembly 4 also includes a plurality of transmission tubes 43 connected through the top of the collecting ring tube 42, and one end of the plurality of transmission tubes 43 away from the collecting ring tube 42 is connected through a fixing block three 44, and the bottom of the fixing block three 44 is fixedly connected to the top of the shell 1.

[0039] The limit assembly 4 also includes a hydraulic telescopic rod 2 45 which is connected through the side wall of the fixed block 3 44. The end of the hydraulic telescopic rod 2 45 away from the fixed block 3 44 is rotatably connected to a contact plate 46. The top of the fixed block 3 44 is fixedly connected to a support assembly 5. Utilizing the characteristic that the piston square plate 31 slides outward along the inner wall of the piston groove 22, a limit assembly 4 is arranged inside the equipment. 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 is reduced. At this time, the hydraulic telescopic rod 1 41 will be compressed and contracted, forcing the internal liquid of multiple hydraulic telescopic rods 1 41 to enter the collecting ring tube 42, and be transmitted from the collecting ring tube 42 to the inside of the hydraulic telescopic rod 2 45 through the transmission pipe 43, forcing multiple hydraulic telescopic rods 2 45 to extend outward. The hydraulic telescopic rod 2 45 also carries the contact plate 46 to contact the outer wall of the flange 23.

[0040] The support assembly 5 includes an L-shaped rod 51 slidably connected to the top of the fixed block three 44, and the end of the L-shaped rod 51 away from the fixed block three 44 is fixedly connected to a compression spring rod 52, and the 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 hydraulic telescopic rods 41 first enters the collection ring tube 42 collectively, and then disperses to the multiple hydraulic telescopic rods 2 45, so that when some of the hydraulic telescopic rods 2 45 are in contact with the outer wall of the flange 23 during the extension process, the remaining hydraulic telescopic rods 2 45 can continue to extend, so that the multiple hydraulic telescopic rods 2 45 can push the contact plate 46 to completely fit the outer wall of the flange 23, avoiding the irregular outer wall of the flange 23, resulting in uneven pressure on the outer wall of the flange 23, affecting the accuracy of equipment positioning.

[0041] The support assembly 5 also includes a sliding rail 54 fixedly connected to the side wall of the L-shaped fixed block 53, and a sliding rail 55 is slidably connected to the inner wall of the sliding rail 54. The inner walls of the five sliding rails 54 are slidably connected to the sliding rails 55. Utilizing the characteristics that the above-mentioned multiple fixed blocks 3 44 are close to each other, a support assembly 5 is arranged inside the equipment, wherein when the fixed blocks 3 44 are close to each other, the fixed block 3 44 drives 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, and the L-shaped fixed block 53 will drive the corresponding sliding rail 54 to contact the outer wall of the exhaust pipe 24, forming a clamping process for the outer wall of the exhaust pipe 24, so as to avoid the irregular shape of the exhaust pipe 24 causing the center of gravity of the exhaust pipe 24 to shift, and the exhaust pipe 24 to tilt when the equipment is welded, causing the welding position between the exhaust pipe 24 and the flange 23 to shift.

[0042] The support assembly 5 also 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 shell 1. When the above-mentioned equipment is running, the distance between the multiple sliding rails 54 is reduced. A motor 56 is arranged inside the equipment. After the sliding rail 54 completes the clamping, the distance between the multiple sliding rails 54 is reduced. In this process, the slide rail 55 will slide along the inner wall of the sliding rail 54, so that the multiple sliding rails 54 and the slide rail 55 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 center 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-mentioned components, the distance between the welding gun 58 and the welding gap is always consistent, thereby ensuring the subsequent welding quality.

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

[0044] S1: Place raw materials;

[0045] S2: Turn on the power;

[0046] S3: Start welding.

[0047] A specific application of this embodiment is: before use, the flange 23 is placed on the top of the fixing ring 21, and the exhaust pipe 24 is placed on the top of the flange 23. Since the space between the housing 1, the piston plate 13 and the fixing 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, so that the above closed space is transformed into a low pressure, and the pressure generated by the low pressure will force the multiple piston square plates 31 to slide outward along the inner wall of the corresponding piston groove 22, and the activity The plug square plate 31 drives the arc rods 35 to move outward synchronously through the fixed block 1 32, the telescopic spring rod 33, and the fixed block 2 34, so that the arc surface of each arc rod 35 contacts the inner wall of the flange 23. At the same time, multiple arc rods 35 will contact the inner wall of the exhaust pipe 24. Multiple arc rods 35 expanding outward will force the center 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, locate the center position of the flange 23 and the exhaust pipe 24, and improve the positioning efficiency of the equipment.

[0048] Taking advantage of the fact that the piston square plate 31 slides outward along the inner wall of the piston groove 22, a limit position assembly 4 is provided 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 is reduced. At this time, the hydraulic telescopic rod 1 41 will be compressed and contracted, forcing the liquid inside the plurality of hydraulic telescopic rods 1 41 to enter the interior of the collecting ring tube 42, and then be transmitted from the collecting ring tube 42 to the interior of the hydraulic telescopic rod 2 45 through the transmission pipe 43, forcing the plurality of hydraulic telescopic rods 2 45 to extend outward. The hydraulic telescopic rod 2 45 also carries the contact plate 46 and the method The outer wall of the flange 23 is in contact with the hydraulic telescopic rods 41, wherein the liquid inside the plurality of hydraulic telescopic rods 41 first collectively enters the interior of the collecting ring tube 42, and then is dispersed to the plurality of hydraulic telescopic rods 2 45, so that when some of the hydraulic telescopic rods 2 45 are in contact with the outer wall of the flange 23 during the extension process, the remaining hydraulic telescopic rods 2 45 can continue to extend, so that the plurality of hydraulic telescopic rods 2 45 can push the contact plate 46 to completely fit the outer wall of the flange 23, thereby avoiding the irregular outer wall of the flange 23, resulting in uneven pressure on the outer wall of the flange 23, and affecting the accuracy of equipment positioning.

[0049] Taking advantage of the fact that the above-mentioned multiple fixing blocks 44 are close to each other, a support assembly 5 is provided inside the equipment, wherein when the fixing blocks 44 are close to each other, the 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, and the L-shaped fixing block 53 drives the corresponding sliding rail 54 to contact the outer wall of the exhaust pipe 24, forming a clamping process for the outer wall of the exhaust pipe 24, thereby preventing the irregular shape of the exhaust pipe 24 from causing the center of gravity of the exhaust pipe 24 to shift, and the exhaust pipe 24 to tilt during welding, resulting in the welding position between the exhaust pipe 24 and the flange 23 to shift. When the above-mentioned equipment is running, the multiple sliding rails 54 In order to reduce the distance, a motor 56 is arranged inside the equipment. After the sliding rail 54 completes the clamping, the distance between the multiple sliding rails 54 is reduced. During this process, the sliding rail 55 will slide along the inner wall of the sliding rail 54, so that the multiple sliding rails 54 and the sliding rail 55 form a retractable circular rail. Then, the power 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, thereby 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 implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only 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), the bottom of the housing (1) being fixedly connected to a bottom plate (11), the top of the bottom plate (11) being fixedly connected to an electric telescopic rod (12), and one end of the electric telescopic rod (12) away from the bottom plate (11) being fixedly connected to a piston plate (13), characterized in that: Also includes: A control mechanism (2), the control mechanism (2) comprising a fixing ring (21) fixedly connected to the inner wall of the housing (1), a plurality of piston grooves (22) being provided on the side wall of the fixing ring (21), a flange (23) being placed on the top of the fixing ring (21), and an exhaust pipe (24) being placed on the top of the flange (23); The clamping mechanism (3) comprises a piston square plate (31) slidably connected to the inner walls of a plurality of piston grooves (22); a fixing block 1 (32) is fixedly connected to the side wall of the piston square plate (31); a telescopic spring rod (33) is fixedly connected to the other end of the fixing block 1 (32); an end of the telescopic spring rod (33) away from the fixing block 1 (32) is fixedly connected to a fixing block 2 (34); a curved rod (35) is fixedly connected to the top of the fixing block 2 (34); and a limiting assembly (4) is fixedly connected to the side wall of the piston square plate (31).

2. A clamping mechanism for welding the end flange of an automobile exhaust pipe according to claim 1, characterized in that: The limit assembly (4) comprises a hydraulic telescopic rod (41) fixedly connected to the side wall of the piston square plate (31); one end of the hydraulic telescopic rod (41) away 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 hydraulic telescopic rod (41).

3. A clamping mechanism for welding the end flange of an automobile exhaust pipe according to claim 2, characterized in that: The limiting assembly (4) further comprises a plurality of transmission tubes (43) which are connected through the top of the collecting ring tube (42); one end of the plurality of transmission tubes (43) which is away from the collecting ring tube (42) is connected through a fixing block three (44); the bottom of the fixing block three (44) is fixedly connected to the top of the outer shell (1).

4. A clamping mechanism for welding the end flange of an automobile exhaust pipe according to claim 3, characterized in that: The limiting assembly (4) further comprises a hydraulic telescopic rod 2 (45) which is connected to the side wall of the fixed block 3 (44); one end of the hydraulic telescopic rod 2 (45) which is away from the fixed block 3 (44) is rotatably connected to a contact plate (46); and the top of the fixed block 3 (44) is fixedly connected to a support assembly (5).

5. The clamping mechanism for welding the end flange of an automobile exhaust pipe according to claim 4, characterized in that: The support assembly (5) comprises an L-shaped rod (51) slidably connected to the top of the fixing block three (44); one end of the L-shaped rod (51) away from the fixing block three (44) is fixedly connected to a compression spring rod (52); and one end of the compression spring rod (52) away from the L-shaped rod (51) is fixedly connected to an L-shaped fixing block (53).

6. A clamping mechanism for welding the end flange of an automobile exhaust pipe according to claim 5, characterized in that: The support assembly (5) further comprises a sliding track (54) fixedly connected to the side wall of the L-shaped fixed block (53), the inner wall of the sliding track (54) being slidably connected to a sliding track (55), and the inner walls of five sliding tracks (54) being slidably connected to a sliding track (55).

7. A clamping mechanism for welding the end flange of an automobile exhaust pipe according to claim 6, characterized in that: The support assembly (5) further comprises 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 outer shell (1).

8. A method for using a clamping mechanism for welding a flange at the end of an automobile exhaust pipe, using the clamping mechanism for welding a flange at the end of an automobile exhaust pipe as claimed in claim 7, characterized in that: The following steps are included: S1: Place raw materials; S2: Turn on the power; S3: Start welding.

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