Automobile tail pipe welding equipment

Abstract

The invention discloses automobile tail pipe welding equipment, and relates to the technical field of pipe welding. The device comprises a machining table and a U-shaped frame installed on the upper surface of the machining table, the U-shaped frame is connected with a welding mechanism through a multi-axis linear die assembly, the machining table is slidably connected with two internal expansion clamping mechanisms and two external clamping mechanisms, the positions of the two internal expansion clamping mechanisms are opposite, the two internal expansion clamping mechanisms are used for clamping a tail pipe, and the two external clamping mechanisms are used for clamping the tail pipe. And by adjusting the position of the internal expansion clamping mechanism, the two tail pipes are in butt joint, and rotary welding of the two tail pipes is achieved. The two inner supporting mechanisms are driven to get close to each other through cooperation of a first bidirectional screw and a first movable frame, positioning of the two sides of the tail pipe is achieved, outer pipes are driven to rotate through a second motor and two gears, and under cooperation of a first toothed belt wheel, a first toothed belt, a first spline shaft and a first spline sleeve, the outer pipes on the two sides can rotate synchronously, so that positioning of the tail pipe is achieved. Therefore, the equipment not only can realize the rotary welding of the automobile tail pipe in the circumferential direction, but also can realize the straight seam welding of the tail pipe.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of pipe welding, and particularly relates to an automobile tail pipe welding device. BACKGROUND

[0002] The automobile tail pipe (also called a decorative tail pipe or tail throat) is a thin-walled stainless steel or chrome-plated part sleeved on the outer end of the exhaust pipe, mainly serving the purposes of decoration, anti-scalding and flow guiding. With the improvement of the requirements of vehicle manufacturers on fuel economy and NVH (Noise, Vibration and Harshness), the popularization of supercharged direct injection engines and the increase of exhaust temperature, the welding of the tail pipe and the exhaust pipe needs to ensure sealing and strength and meet the appearance consistency. Therefore, the tail pipe needs to be welded by a welding device in the production process.

[0003] The patent CN112338436B discloses an automobile tail pipe welding device. By designing the stopper, the L-shaped stopper, the first L-shaped supporting arm and the second L-shaped supporting arm, after the semi-finished product is inserted into the first L-shaped supporting arm and the second L-shaped supporting arm, the L-shaped stopper is retracted backward by the hydraulic rod, so that it is pressed against the front end of the semi-finished product, the semi-finished product is fixed and avoids shaking, and the first L-shaped supporting arm and the L-shaped stopper are simultaneously pressed to the right by the first driving motor, so that the free ends on both sides of the semi-finished product are engaged with each other.

[0004] The above-mentioned tail pipe welding device is found to only rely on the two-point positioning of the second clamping groove and the third clamping groove to achieve simple positioning of the pipe material, which leads to the lack of radial constraint of the tail pipe and poor positioning accuracy. In addition, the welding device can only perform straight seam welding on the tail pipe, and the welding method is relatively single. When the tail pipe needs to be welded in the circumferential direction, the welding device cannot meet the rotating welding operation of the tail pipe. SUMMARY

[0005] The purpose of the present application is to provide an automobile tail pipe welding device that drives the synchronous rotation of two outer pipes through a transmission assembly, realizes the circumferential rotating welding of the tail pipe, and realizes the radial constraint of the tail pipe through the L-shaped supporting plate and the rubber roller, thereby solving the existing problems.

[0006] To solve the above technical problems, the present application is realized by the following technical scheme:

[0007] The application discloses a kind of automobile tail pipe welding equipment, including processing table and the U-shaped frame installed on the upper surface of processing table, the U-shaped frame is connected with welding mechanism by multi-axis linear module component, the processing table is slidably connected with two inner expansion clamping mechanisms and two outer clamping mechanisms, the position of two the inner expansion clamping mechanisms is opposite, for respectively clamping tail pipe, and by adjusting the position of inner expansion clamping mechanism, so that two tail pipes are butt joint, and by multi-axis linear module component, rotating welding is realized to two tail pipes;The position of two the outer clamping mechanisms is opposite, is supported by inner expansion clamping mechanism, is clamped from the outside of tail pipe to the inside by two outer clamping mechanisms, so that the welding side of tail pipe is aligned, and by multi-axis linear module component, straight seam welding is realized to tail pipe.

[0008] As a preferred technical scheme of the application, the inner expansion clamping mechanism includes a moving frame I slidably connected with the processing table, the outer tube is rotatably connected with the moving frame I, and the inner support mechanism is rotatably connected with the outer tube, so as to constrain the tail pipe in the radial direction;The inner support mechanism includes a screw rod rotatably connected with the outer tube, a screw sleeve threadedly connected with the screw rod, a plurality of ring-shaped distribution scissor frames hinged between the screw sleeve and the outer tube through a hinge sleeve, and an L-shaped support plate rotatably connected with the scissor frames.

[0009] As a preferred technical scheme of the application, the two inner expansion clamping mechanisms are drivingly connected with each other through a driving assembly I, the driving assembly I includes a bidirectional screw rod I rotatably connected with the processing table, the bidirectional screw rod I is threadedly connected with the moving frame I, one end of the bidirectional screw rod I is fixedly installed with a motor I, the motor I is connected with the processing table, and is used to drive the bidirectional screw rod I to rotate, so as to realize the reverse or opposite movement of the two moving frames I.

[0010] As a preferred technical scheme of the application, one side of one of the moving frames I is fixedly installed with a motor II, and the motor II is drivingly connected with the outer tube, and is used to drive the outer tube to rotate.

[0011] As a preferred technical scheme of the application, the two inner expansion clamping mechanisms are drivingly connected with each other through a transmission assembly I, the transmission assembly I includes a spline shaft I rotatably connected with one of the moving frames I, and a spline sleeve I rotatably connected with the other moving frame I, the spline sleeve I is inserted with the spline shaft I, and the spline shaft I and the spline sleeve I are drivingly connected with the two outer tubes respectively.

[0012] As a preferred technical scheme of the application, one of the outer tubes is fixedly installed with a bearing support, the bearing support is rotatably connected with a worm, and the screw rod is connected with a worm wheel meshing with the worm.

[0013] As a preferred technical scheme of the present application, the two inner supporting mechanisms are connected through a transmission assembly two, the transmission assembly two comprises a spline shaft two rotatably connected with one of the moving frames and a spline sleeve two rotatably connected with the other moving frame, the spline shaft two is inserted into the spline sleeve two, and the spline shaft two and the spline sleeve two are connected with the two screw rods.

[0014] As a preferred technical scheme of the present application, the outer clamping mechanism comprises a moving frame two slidingly connected with the machining table, the moving frame two is hingedly connected with a Y-shaped frame through a hinge hole bolt, and the Y-shaped frame is rotatably connected with a rubber roller; the hinge hole bolt is threadedly connected with a hand nut, and the rotating position of the Y-shaped frame is locked and fixed through the hand nut, so that the tail pipe is better clamped.

[0015] As a preferred technical scheme of the present application, the hinge hole bolt is fixedly installed with a gear, and the two gears are engaged, so that the two rubber rollers are synchronously rotated to open the outer diameter of the self-adaptive tail pipe; springs are fixedly installed between the middle positions of the opposite sides of the two Y-shaped frames.

[0016] As a preferred technical scheme of the present application, the two outer clamping mechanisms are connected through a driving assembly two, the driving assembly two comprises a bidirectional screw rod two rotatably connected with the machining table, the moving frame two is threadedly connected with the bidirectional screw rod two, and the bidirectional screw rod two is fixedly installed with a motor three at one end, and the motor three is connected with the machining table.

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

[0018] 1. The two inner supporting mechanisms are driven to approach each other through the cooperation of the bidirectional screw rod one and the moving frame one, the positioning of the tail pipe on both sides is realized, the outer pipe is driven to rotate through the motor two and the two gears, and the outer pipes on both sides can be synchronously rotated through the cooperation of the toothed belt wheel one, the toothed belt one, the spline shaft one and the spline sleeve one, so that the equipment can realize the rotary welding of the automobile tail pipe in the circumferential direction and the straight seam welding of the tail pipe.

[0019] 2. The four L-shaped supporting plates on the screw rod are synchronously opened through the cooperation of the worm, the worm wheel, the toothed belt wheel two, the toothed belt two, the spline shaft two and the spline sleeve two, the radial constraint of the inner wall of the tail pipe is realized, the welding of tail pipes with different diameters is adapted, and the L-shaped supporting plates can be synchronously opened through the cooperation of the toothed belt wheel two, the toothed belt two, the spline shaft two and the spline sleeve two when the rotating worm drives the worm wheel to rotate, so that the inner supporting positioning mode is adopted to replace the original two-point clamping positioning mode, the positioning and anti-dislocation are realized, and the positioning and clamping effect of the tail pipe is further improved.

[0020] 3、The Y-shaped frame can be relatively rotated through the meshing of the two gears, and the two rubber rollers are tightly attached to the outer wall of the tail pipe under the elastic force of the spring, are clamped from the outer side of the tail pipe to the inner side, the welded side edges of the tail pipe are aligned, the gap of the to-be-welded side edges of the tail pipe is reduced, welding operation is facilitated, and the positioning precision of the tail pipe is improved, so that the outer wall of the tail pipe of different diameters is radially constrained.

[0021] Of course, it is not necessary for any product embodying the invention to achieve all of the advantages mentioned above. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0023] Figure 1 is a three-dimensional structural schematic diagram of the present application;

[0024] Figure 2 is a structural schematic diagram of the inner expansion clamping mechanism of the present application;

[0025] Figure 3 is a structural schematic diagram of the worm and the worm gear connection of the present application;

[0026] Figure 4 is a structural schematic diagram of the inner expansion clamping mechanism of the present application;

[0027] Figure 5 is a structural schematic diagram of the moving frame of the present application;

[0028] Figure 6 is a structural schematic diagram of the transmission assembly of the present application;

[0029] Figure 7 is a structural schematic diagram of the inner expansion clamping mechanism of the present application;

[0030] Figure 8 is a structural schematic diagram of the outer clamping mechanism of the present application;

[0031] Figure 9 is a structural schematic diagram of the A place of the present application;

[0032] Figure 10 is a structural schematic diagram of the outer clamping mechanism of the present application;

[0033] Figure 11 is a structural schematic diagram of the Y-shaped frame of the present application;

[0034] Figure 12Another embodiment of the outer clamping mechanism of the present application is shown schematically;

[0035] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0036] 1, processing table; 2, U-shaped frame; 3, inner expansion clamping mechanism; 4, multi-axis linear module assembly; 5, outer clamping mechanism; 6, inner support mechanism; 31, motor one; 32, bidirectional screw one; 33, moving frame one; 34, motor two; 35, outer tube; 36, spline shaft one; 37, spline sleeve one; 51, motor three; 52, bidirectional screw two; 53, moving frame two; 54, rubber roller; 55, hand screw nut; 56, hinged hole bolt; 57, gear; 58, spring; 59, Y-shaped frame; 61, screw; 62, screw sleeve; 63, scissor frame; 64, bearing support; 65, worm; 66, worm gear; 67, L-shaped support plate; 68, spline sleeve two; 69, spline shaft two. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0038] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0039] Please refer to Figure 1 As shown in the drawings, the present application is a kind of automobile tail pipe welding equipment, including processing table 1 And install on the upper surface of processing table 1 U-shaped frame 2, U-shaped frame 2 It is connected with welding mechanism through multi-axis linear module assembly 4, processing table 1 It is slidably connected with two inner expansion clamping mechanisms 3 And two outer clamping mechanisms 5.

[0040] The positions of the two inner expansion clamping mechanisms 3 are opposite, for clamping the tail pipe respectively, and by adjusting the position of the inner expansion clamping mechanism 3, the two tail pipes are butt jointed, and the multi-axis linear module assembly 4 is used to realize the rotary welding of the two tail pipes; The positions of the two outer clamping mechanisms 5 are opposite, supported by the inner expansion clamping mechanism 3, clamped from the outside to the inside of the tail pipe by the two outer clamping mechanisms 5, so that the welding side of the tail pipe is aligned, and the multi-axis linear module assembly 4 is used to realize the straight seam welding of the tail pipe.

[0041] Please refer toFigure 2 , Figure 3 , Figure 6 As shown, a specific application of this embodiment is as follows: the internal expansion clamping mechanism 3 includes a movable frame 33 slidably connected to the processing table 1. The movable frame 33 is rotatably connected to an outer tube 35, and the outer tube 35 is rotatably connected to an internal support mechanism 6 to achieve radial constraint on the tail tube. A motor 34 is fixedly installed on one side of one of the movable frames 33, and the motor 34 is drivenly connected to the outer tube 35 to drive the outer tube 35 to rotate. The output ends of the outer tube 35 and the motor 34 are both connected to gears, and the two gears mesh to realize the rotation of the outer tube 35. In addition, the motor 34 and the outer tube 35 can also be driven by a sprocket and chain transmission method.

[0042] By adjusting the position of the moving frame 33, the position of the inner expansion clamping mechanism 3 is adjusted, so that the two tail tubes are connected and the welding quality of the tail tubes is improved. Through the transmission connection between the motor 34 and the outer tube 35, the outer tube 35 and the inner support mechanism 6 are driven to rotate, so that the two tail tubes are welded in the circumferential direction through the multi-axis linear mold assembly 4.

[0043] Please see Figure 2 , Figure 6 , Figure 7 As shown, a specific application of this embodiment is as follows: the inner support mechanism 6 includes a screw 61 rotatably connected to the outer tube 35, the screw 61 is threadedly connected to a screw sleeve 62, and the screw sleeve 62 and the outer tube 35 are hinged together by a hinge sleeve to four annularly distributed scissor lifters 63, and the scissor lifters 63 are rotatably connected to an L-shaped support plate 67.

[0044] Rotating the screw 61 drives the screw sleeve 62 to move linearly, which in turn pushes the L-shaped support plate 67 to open through the scissor lifter 63. Then, the tail tube is placed on the L-shaped support plate 67 to achieve radial constraint on the tail tube. In addition, in order to better adapt to the inner wall support and positioning of tail tubes of different diameters, ten arc-shaped abutments are usually installed on the side of the L-shaped support plate 67 away from the screw 61, so that the L-shaped support plate 67 can fit tightly against the inner wall of the tail tube, further improving the support effect on the inner wall of the tail tube.

[0045] Please see Figure 2 , Figure 4 As shown, a specific application of this embodiment is as follows: the two internal expansion clamping mechanisms 3 are connected by a drive assembly. The drive assembly includes a bidirectional screw 32 that is rotatably connected to the processing table 1, and the bidirectional screw 32 is threadedly connected to the moving frame 33. A motor 31 is fixedly installed at one end of the bidirectional screw 32, and the motor 31 is connected to the processing table 1 to drive the bidirectional screw 32 to rotate, thereby realizing the opposite or opposite movement of the positions of the two moving frames 33.

[0046] In order to make the two sides of the inner expansion clamping mechanism 3 synchronous movement, through the motor 31 work drive two-way screw 32 rotation, thereby pushing two moving frame 33 on the processing platform 1 slide towards each other, so that the inner support mechanism 6 automatically close to the tail pipe, realize the end positioning of the tail pipe.

[0047] As Figure 2 、 Figure 4 shown, two inner expansion clamping mechanism 3 through the transmission assembly transmission connection, transmission assembly one includes with one of the moving frame 33 rotationally connected spline shaft 36, and with another moving frame 33 rotationally connected spline sleeve 37, and spline sleeve 37 with spline shaft 36 plug-in, spline shaft 36 and spline sleeve 37 are respectively connected with two outer tube 35 transmission, spline shaft 36, outer tube 35 spline sleeve 37 are connected with toothed belt wheel one, and the vertical distribution of two toothed belt wheel one transmission connection has toothed belt one, using toothed belt wheel, toothed belt transmission mode for transmission, can effectively avoid the transmission slip.

[0048] When one of the outer tube 35 rotation, through the spline shaft 36 and spline sleeve 37 cooperation, can make both sides of the outer tube 35 can rotate synchronously, keep the consistency of the outer tube 35 movement, at the same time does not affect the position adjustment of the inner expansion clamping mechanism 3.

[0049] Please refer to Figure 4 、 Figure 6 shown, a specific application of the embodiment is: one of the outer tube 35 fixedly installed with bearing bracket 64, bearing bracket 64 rotationally connected with worm 65, screw 61 connection with the worm 65 meshing worm gear 66.

[0050] Through the rotation of the worm 65 drive one of the screw 61 rotation, so that the screw sleeve 62 on the screw 61 linear motion, using the scissors frame 63 will be a plurality of L type support plate 67 synchronous open, so that it is better to the tail pipe inner wall for radial constraint, using the worm 65 and worm gear 66 between the self locking, so that the screw 61, scissors frame 63, L type support plate 67 position is kept, and in the outer tube 35 rotation, inner support mechanism 6 will drive the tail pipe with the outer tube 35 rotation, to realize the circumferential welding of the tail pipe.

[0051] As Figure 2 、 Figure 3 、 Figure 6As shown, the two inner support mechanisms 6 are connected through a transmission assembly two, which includes a spline shaft two 69 rotatably connected with one of the moving frames one 33, and a spline sleeve two 68 rotatably connected with the other moving frame one 33. The spline shaft two 69 is inserted into the spline sleeve two 68. The spline shaft two 69 and the spline sleeve two 68 are both connected with two screw rods 61. The spline shaft two 69, the screw rod 61 and the spline sleeve two 68 are all connected with a toothed belt wheel two. Two vertically distributed toothed belt wheels two are connected through a toothed belt two. The toothed belt wheel and the toothed belt transmission mode can effectively prevent the transmission from slipping.

[0052] When it is necessary to adjust the two inner support mechanisms 6, the cooperation of the spline shaft two 69 and the spline sleeve two 68 can realize the synchronous adjustment of the two inner support mechanisms 6 by adjusting only one of the inner support mechanisms 6, so as to keep the consistency of the adjustment of the two L-shaped support plates 67, reduce the operation difficulty, and not affect the position adjustment of the inner expansion clamping mechanism 3.

[0053] Please refer to Figure 8 , Figure 12 The specific application of the embodiment is that the outer clamping mechanism 5 includes a moving frame two 53 connected with the machining table 1 in a sliding manner. The moving frame two 53 is hinged with a Y-shaped frame 59 through a hinge hole bolt 56. The Y-shaped frame 59 is rotatably connected with a rubber roller 54. The hinge hole bolt 56 is threadedly connected with a hand nut 55. The hand nut 55 is used to lock and fix the rotating position of the Y-shaped frame 59, so as to better clamp the tail pipe.

[0054] The Y-shaped frame 59 and the rubber roller 54 are moved to approach the tail pipe by moving the moving frame two 53. The Y-shaped frame 59 is rotated around the hinge hole bolt 56 by rotating the Y-shaped frame 59, so as to drive the rubber roller 54 to rotate. The rubber roller 54 better clamps the outer wall of the tail pipe. Then, the hinge hole bolt 56 is locked by the hand nut 55, so as to keep the current rotating position of the Y-shaped frame 59.

[0055] Please refer to Figure 8 , Figure 9 , Figure 11 The specific application of the embodiment is that the hinge hole bolt 56 is fixedly installed with a gear 57. The two gears 57 are engaged. The spring 58 is fixedly installed between the middle positions of the opposite sides of the two Y-shaped frames 59.

[0056] The rotation directions of the two hinge hole bolts 56 are opposite by the engagement of the two gears 57. Under the elastic force of the spring 58, the two rubber rollers 54 are synchronously rotated to adapt to the outer wall of the tail pipe, so as to improve the clamping effect of the outer wall of the tail pipe.

[0057] Please refer to Figure 8 , Figure 10As shown, one specific application of the embodiment is that the two outer clamping mechanisms 5 are connected through a driving assembly two, which includes a two-way screw two 52 rotatably connected with the machining table 1, a moving frame two 53 threadedly connected with the two-way screw two 52, and a motor three 51 fixedly installed at one end of the two-way screw two 52 and connected with the machining table 1.

[0058] In order to enable the two outer clamping mechanisms 5 to approach the automatic tail pipe, clamp the tail pipe from the outside to the inside, and align the welded side edges of the tail pipe, the motor three 51 is operated to drive the two-way screw two 52 to drive the two moving frames two 53 to move towards each other, thereby clamping the outer wall of the tail pipe.

[0059] In use, the inner diameter of the tail pipe before welding is measured first, the worm 65 is rotated by a hand wheel or handle to rotate the worm gear 66 and one of the screws 61, the screw sleeve 62 on the screw 61 is threadedly connected with the screw 61 to cause the scissors frame 63 to open the L-shaped support plates 67, the four L-shaped support plates 67 are synchronously opened to form a positioning sleeve for placing the tail pipe, when the screw is rotated, the toothed belt wheel two and the toothed belt two on the screw are rotated to rotate the spline shaft two 69 on the same side, the spline shaft two 69 and the spline sleeve two 68 are connected to synchronously rotate the spline sleeve two 68, the toothed belt wheel two and the toothed belt two on the same side of the spline sleeve two 68 are rotated to synchronously rotate the other screw 61, so that the two screws 61 can synchronously rotate in a circle, thereby keeping the opening adjustment of the two inner support mechanisms 6 consistent, avoiding the adjustment difference of the two inner support mechanisms 6 to adapt to the inner wall positioning of the tail pipe, and then placing the tail pipe to be welded on the positioning sleeve formed by the opening of the plurality of L-shaped support plates 67.

[0060] When the end of the tail pipe is positioned, the two-way screw one 32 is rotated by the motor one 31 to drive the two moving frames one 33 to move towards each other, thereby causing the two outer pipes 35 and the inner support mechanisms 6 to move towards each other, the plurality of L-shaped support plates 67 on the opposite sides can position the end of the tail pipe, thereby achieving the limiting and fixing of the end of the tail pipe.

[0061] When the radial constraint is performed on the outer wall of the tail pipe, the motor three 51 drives the bidirectional screw two 52 to rotate, drives the two moving frames two 53 to move towards each other, so that the rubber rollers 54 on the two moving frames two 53 approach the outer wall of the tail pipe, the hand screw nut 55 and the hinged hole bolt 56 can manually adjust the opening degree of the Y-shaped frame 59 and the rubber roller 54, so that the rubber roller 54 is tightly attached to the outer wall of the tail pipe, and the tail pipe is clamped from the outside to the inside, so that the to-be-welded side edges of the tail pipe approach each other and are attached and aligned, so as to reduce the gap of the to-be-welded side edges of the tail pipe and improve the positioning accuracy of the tail pipe. In addition, in order to better adapt to the clamping of tail pipes of different diameters, springs 58 and gears 57 can also be installed on the Y-shaped frame 59, the meshing of the two gears 57 enables the two Y-shaped frames 59 on the hand screw nut 55 to rotate in opposite directions, and the spring 58 provides elastic connection, so that the Y-shaped frame 59 and the rubber roller 54 adapt to the outer wall of the tail pipe, thereby better clamping the tail pipe.

[0062] When the tail pipe positioning is completed, the welding mechanism is driven by the multi-axis linear module assembly 4 to move linearly, realizing the welding operation of the automobile tail pipe. When the automobile tail pipe needs to be rotated and welded, the motor two 34 on one of the moving frames one 33 drives the outer pipe 35 arranged on the same side to rotate synchronously, and the outer pipe 35 drives the spline shaft one 36 arranged on the same side to rotate synchronously through the gear belt wheel one and the gear belt one arranged on the same side. Through the cooperation of the spline shaft one 36 and the spline sleeve one 37, the gear belt wheel one, the gear belt one and the outer pipe 35 on the other side are driven to rotate synchronously. At the same time, the self-locking effect of the worm 65 and the worm wheel 66 enables the two inner support mechanisms 6 to rotate synchronously with the outer pipe 35. At this time, the tail pipe can be welded in the circumferential direction through the welding mechanism.

[0063] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present specification. The present specification selects and describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A welding device for automobile tailpipes, comprising a processing table (1) and a U-shaped frame (2) mounted on the upper surface of the processing table (1), wherein the U-shaped frame (2) is connected to a welding mechanism via a multi-axis linear die assembly (4), characterized in that: The processing table (1) is slidably connected to two internal expansion clamping mechanisms (3) and two external clamping mechanisms (5). The two internal expansion clamping mechanisms (3) are positioned opposite each other to clamp the tail tubes respectively. By adjusting the position of the internal expansion clamping mechanisms (3), the two tail tubes are connected, and the two tail tubes are rotated and welded by the multi-axis linear mold assembly (4). The two external clamping mechanisms (5) are positioned opposite each other and supported by the internal expansion clamping mechanism (3). The two external clamping mechanisms (5) clamp the tail tube from the outside to the inside, aligning the welding sides of the tail tube. The tail tube is then welded using the multi-axis linear mold assembly (4).

2. The automotive tailpipe welding equipment according to claim 1, characterized in that: The internal expansion clamping mechanism (3) includes a movable frame (33) that is slidably connected to the processing table (1). The movable frame (33) is rotatably connected to an outer tube (35). The outer tube (35) is rotatably connected to an internal support mechanism (6) to achieve radial constraint on the tail tube. The inner support mechanism (6) includes a screw (61) rotatably connected to the outer tube (35), the screw (61) is threadedly connected to a screw sleeve (62), the screw sleeve (62) and the outer tube (35) are hinged together by a plurality of annularly distributed scissor arms (63), and the scissor arms (63) are rotatably connected to an L-shaped support plate (67).

3. The automotive tailpipe welding equipment according to claim 2, characterized in that: The two internal expansion clamping mechanisms (3) are connected by a drive assembly. The drive assembly includes a bidirectional screw (32) rotatably connected to the processing table (1) and threadedly connected to the moving frame (33). A motor (31) is fixedly installed at one end of the bidirectional screw (32) and connected to the processing table (1) to drive the bidirectional screw (32) to rotate, thereby moving the two moving frames (33) in opposite or opposite directions.

4. The automotive tailpipe welding equipment according to claim 3, characterized in that: One of the movable frames (33) is fixedly mounted on one side with a motor (34), and the motor (34) is connected to the outer tube (35) for driving the outer tube (35) to rotate.

5. The automotive tailpipe welding equipment according to claim 4, characterized in that: The two internal expansion clamping mechanisms (3) are connected by a transmission assembly. The transmission assembly includes a spline shaft (36) rotatably connected to one of the movable frames (33) and a spline sleeve (37) rotatably connected to the other movable frame (33). The spline sleeve (37) is inserted into the spline shaft (36). The spline shaft (36) and the spline sleeve (37) are respectively connected to the two outer tubes (35).

6. The automotive tailpipe welding equipment according to claim 2, characterized in that: One of the outer tubes (35) is fixedly mounted with a bearing bracket (64), the bearing bracket (64) is rotatably connected to a worm (65), and the screw (61) is connected to a worm wheel (66) that meshes with the worm (65).

7. The automotive tailpipe welding equipment according to claim 2, characterized in that: The two inner support mechanisms (6) are connected by a transmission assembly two. The transmission assembly two includes a spline shaft two (69) rotatably connected to one of the movable frames one (33) and a spline sleeve two (68) rotatably connected to the other movable frame one (33). The spline shaft two (69) and the spline sleeve two (68) are inserted into each other. The spline shaft two (69) and the spline sleeve two (68) are respectively connected to two screws (61).

8. The automotive tailpipe welding equipment according to claim 1, characterized in that: The external clamping mechanism (5) includes a movable frame two (53) that is slidably connected to the processing table (1). The movable frame two (53) is hinged to a Y-shaped frame (59) by a hinge hole bolt (56). The Y-shaped frame (59) is rotatably connected to a rubber roller (54). The hinged hole bolt (56) is threaded with a hand-tightening nut (55), which locks and fixes the rotation position of the Y-shaped frame (59) to better clamp the tail tube.

9. The automotive tailpipe welding equipment according to claim 8, characterized in that: The hinged hole bolt (56) is fixedly mounted with a gear (57), and the two gears (57) mesh with each other, so that the two rubber rollers (54) rotate synchronously to open the outer diameter of the adaptive tail tube. A spring (58) is fixedly mounted between the middle positions of the opposite sides of the two Y-shaped frames (59).

10. The automotive tailpipe welding equipment according to claim 9, characterized in that: The two external clamping mechanisms (5) are connected by a drive assembly two. The drive assembly two includes a bidirectional screw two (52) that is rotatably connected to the processing table (1). The moving frame two (53) is threadedly connected to the bidirectional screw two (52). A motor three (51) is fixedly installed at one end of the bidirectional screw two (52), and the motor three (51) is connected to the processing table (1).

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