CN117862675B - Welding device for automobile temperature sensor - Google Patents

Abstract

The invention relates to an automobile temperature sensor welding device, which comprises a workbench, wherein a laser welding mechanism and two groups of workpiece clamping mechanisms are arranged on the workbench; the first group of workpiece clamping mechanisms comprise a first fixture, a second fixture and a third fixture, the second group of workpiece clamping mechanisms comprise a fourth fixture, a fifth fixture and a sixth fixture, and the fixtures are installed selectively. According to the welding device of the automobile temperature sensor, the X-axis linear module can drive the laser welding head to move in the X-axis direction, the Y-axis linear module can drive the laser welding head to move in the Y-axis direction, the electric turntable can change the angle of the laser welding head so as to be suitable for different welding angles, the laser welding mechanism can flexibly adjust the orientation of the laser head according to the position of a workpiece, and the use flexibility is higher; the two groups of workpiece clamping mechanisms are arranged on the workbench, and simultaneously, the two groups of workpieces are welded, and the double-station arrangement is beneficial to improving the welding efficiency of the workpieces.

Description

Welding device for automobile temperature sensor

Technical Field

The invention relates to the technical field of sensor welding, in particular to an automobile temperature sensor welding device.

Background

Laser welding is one of the important aspects of laser material processing technology application, is mainly used for welding thin-wall materials and low-speed welding, and is characterized in that heat conduction type, namely laser radiation and the surface of a heat-added component in the welding process, surface heat is diffused to the inside through heat conduction, and the component is melted by controlling parameters such as the width, energy, peak power, repetition frequency and the like of laser pulses, so that a specific molten pool is formed. Because of its unique advantages, it has been successfully applied to micro and miniature part welding.

The tail sensing part of the automobile temperature sensor is usually provided with two specifications, namely a straight pipe part and a bent pipe part, when the workpiece is clamped by the existing sensor welding device, the workpiece with different specifications is usually clamped and fixed by a universal clamp, and the clamping is not stable enough, so that the welding efficiency and the welding accuracy are affected, and therefore, the automobile temperature sensor welding device is provided for solving the problems.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the welding device for the automobile temperature sensor, which has the advantages of stronger pertinence to workpieces with different specifications and the like, and solves the problems that the workpieces with different specifications are clamped and fixed by utilizing a universal clamp and are not stable enough in clamping, so that the welding efficiency and the welding accuracy are affected.

In order to achieve the above purpose, the present invention provides the following technical solutions: the welding device of the automobile temperature sensor comprises a workbench, wherein a laser welding mechanism and two groups of workpiece clamping mechanisms are arranged on the workbench;

the first group of workpiece clamping mechanisms comprise a first fixture, a second fixture and a third fixture, the second group of workpiece clamping mechanisms comprise a fourth fixture, a fifth fixture and a sixth fixture, and the fixtures are installed selectively;

the first to third tool clamps comprise mounting plates fixed on the workbench, a driving motor is fixed on the mounting plates, a rotating shaft is rotatably arranged on the mounting plates through bearings, an output shaft of the driving motor is connected with the rotating shaft through a first belt transmission structure, a three-jaw chuck is fixed on the top surface of the rotating shaft, a mounting frame is fixed on the top surface of the mounting plates, and a follow-up column capable of moving up and down is arranged on the mounting frame;

The fixture comprises a fixture plate fixed on a workbench, a fixing frame is fixed on the top surface of the fixing plate, a rotating shaft is arranged on the fixing frame through bearing rotation, the rotating shaft can actively rotate, a supporting table used for bearing a workpiece is fixed at the end part of the rotating shaft, a corner cylinder is fixed on the side surface of the supporting table, a pressing block is fixed at the output end of the corner cylinder through a connecting arm, and a supporting structure used for supporting the tail part of the workpiece is further arranged on the top surface of the fixing plate.

Further, the laser welding mechanism comprises an X-axis linear module, a Y-axis linear module, an electric turntable and a laser welding head, wherein the X-axis linear module is fixed on the top surface of the workbench, the Y-axis linear module is fixed at the output end of the X-axis linear module, the electric turntable is fixed at the output end of the Y-axis linear module, and the laser welding head is fixed at the output end of the electric turntable.

Further, be fixed with the drive cylinder on the mounting bracket, the output shaft of drive cylinder is fixed with the motion frame, the follow-up post is located on the motion frame through the bearing rotation, be fixed with spacing track on the mounting bracket, one side of motion frame be fixed with spacing track sliding connection's spacing slider, be fixed with on the mounting bracket with two sets of vertical spacing posts that correspond of motion frame.

Further, frock clamp II still includes two support columns that are fixed in on the three-jaw chuck and symmetric distribution, two the top surface of support column is fixed with the support bar, the top surface of support bar forms the recess that supplies work piece T type cover butt downwards, the holding tank that supplies the work piece to put into has been seted up to one side of support bar, the bottom surface of support bar upwards forms and dodges the groove.

Further, frock clamp three includes the structure of frock clamp two, still including being fixed in the L type spacing post of follower post bottom, the bottom of L type spacing post inwards forms the arc sulcus and rather than the big groove of arc of intercommunication, a plurality of gas pockets have still been seted up to the inside wall in the big groove of arc, the interior roof in the big groove of arc forms a plurality of fixture blocks downwards, the side of fixture block is domatic.

Further, a straight pipe through groove I for placing the straight pipe workpiece A is formed in the supporting table in the tool clamp IV, a bent pipe through groove I communicated with the straight pipe through groove and used for placing the bent pipe workpiece B is further formed in the supporting table, and a bent pipe limiting wheel is further arranged in the bent pipe through groove I in a rotating mode through a rotating shaft; the support structure in the fixture clamp IV comprises a follow-up pressure head capable of horizontally moving and a pair of movable blocks capable of relatively moving or oppositely moving.

Further, be fixed with the rotating electrical machines on the fixed plate, the output shaft and the axis of rotation of rotating electrical machines pass through belt drive structure two and link to each other, be fixed with flexible cylinder on the mount, flexible cylinder's output shaft is fixed with the fly frame, follow-up pressure head passes through the bearing rotation and locates on the fly frame, be fixed with the backup pad on the fly frame, threaded connection has a pair of adjusting screw in the backup pad, two the movable block is located adjusting screw's opposite face through the bearing rotation respectively, set up the movable groove that supplies the movable block to reciprocate in the backup pad, the bottom part of movable block extends to the movable inslot.

Further, offer the straight tube that supplies straight tube work piece A to place on the brace table in frock clamp five and lead to groove two, still be equipped with on the brace table and lead to groove two with the return bend that the rectangle leads to the groove intercommunication, the bearing structure is including being fixed in the supporting seat on the fixed plate in frock clamp five, be fixed with the limiting plate on the supporting seat, it is equipped with a pair of supporting wheel through the pivot rotation on the limiting plate, the spacing groove has been seted up at the middle part of limiting plate top surface, the top surface of fixed plate is fixed with the supporting cylinder, the output shaft of supporting cylinder is fixed with L type loading board, the loading groove has been seted up at the middle part of L type loading board top surface, the side of L type loading board is fixed with the lifter plate through L type connecting plate, rotate through the pivot on the lifter plate and be equipped with the pinch roller that is located the supporting wheel top.

Further, a straight pipe through groove III for placing a workpiece is formed in the supporting table in the fixture six, an arc-shaped positioning groove which is communicated with the rectangular through groove and used for placing a T-shaped sleeve of the workpiece is further formed in the supporting table, and the supporting structure in the fixture six is identical to the supporting structure in the fixture five in structure.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

According to the welding device of the automobile temperature sensor, the X-axis linear module can drive the laser welding head to move in the X-axis direction, the Y-axis linear module can drive the laser welding head to move in the Y-axis direction, the electric turntable can change the angle of the laser welding head so as to be suitable for different welding angles, the laser welding mechanism can flexibly adjust the orientation of the laser head according to the position of a workpiece, and the use flexibility is higher;

The two groups of workpiece clamping mechanisms are arranged on the workbench, two groups of workpieces are welded at the same time, the double-station arrangement is beneficial to improving the welding efficiency of the workpieces, and the two groups of workpiece clamping mechanisms arranged on the workbench are combined for two groups of six groups of workpiece clamps, so that the welding efficiency of the workpieces can be flexibly adjusted according to the processing scene.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of a laser welding mechanism according to the present invention;

FIG. 3 is a schematic view of a tooling fixture of the present invention;

FIG. 4 is a second schematic view of the tool clamp of the present invention;

FIG. 5 is a three schematic views of the tool clamp of the present invention;

FIG. 6 is a schematic diagram of a tooling fixture according to the present invention;

FIG. 7 is a schematic diagram of a tooling fixture according to the present invention;

FIG. 8 is a six schematic view of a tooling fixture according to the present invention;

FIG. 9 is a schematic view of a straight tube workpiece of the present invention;

FIG. 10 is a schematic view of a bent pipe work of the present invention.

In the figure: 1. a work table; 2. a laser welding mechanism; 201. an X-axis linear module; 202. a Y-axis linear module; 203. an electric turntable; 204. a laser welding head; 3. a workpiece clamping mechanism; 31. a first tool clamp; 32. a second tool clamp; 33. a third tool clamp; 34. a tool clamp IV; 35. fifthly, a tooling fixture; 36. a fixture; 311. a mounting plate; 312. a driving motor; 313. a rotation shaft; 314. a belt transmission structure I; 315. a three-jaw chuck; 316. a mounting frame; 317. a driving cylinder; 318. a motion frame; 319. a follower column; 321. a support column; 322. a support bar; 323. a groove; 324. a receiving groove; 325. an avoidance groove; 331. an L-shaped limit column; 332. an arc-shaped small groove; 333. an arc-shaped large groove; 334. air holes; 335. a clamping block; 341. a fixing plate; 342. a fixing frame; 343. a rotating shaft; 344. a rotating electric machine; 345. a belt transmission structure II; 346. a support table; 347. a corner cylinder; 348. briquetting; 349. a support structure; a1, a straight pipe is communicated with a groove I; b1, a first bent pipe is communicated with a groove; c1, a bent pipe limiting wheel; 3491. a telescopic cylinder; 3492. a movable frame; 3493. a follow-up pressure head; 3494. a support plate; 3495. adjusting a screw; 3496. a movable block; 3497. a movable groove; a2, a straight pipe through groove II; b2, a bent pipe is communicated with a second groove; 3591. a support base; 3592. a limiting plate; 3593. a support wheel; 3594. a limit groove; 3595. a support cylinder; 3596. an L-shaped bearing plate; 3597. a carrying groove; 3598. a lifting plate; 3599. a pinch roller; a3, a straight pipe through groove III; b3, an arc-shaped positioning groove; A. a straight pipe workpiece; a1, a straight pipe part I; a2, a straight pipe part II; a3, a straight pipe part III; a4, a straight pipe part IV; a5, a straight pipe part V; B. bending a pipe workpiece; b1, a first bent pipe part; b2, a second bent pipe part; b3, bending a pipe part III; b4, a bent pipe part IV; b5, bending pipe part five.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-10, an automotive temperature sensor welding device in this embodiment includes a workbench 1, a laser welding mechanism 2 and two groups of workpiece clamping mechanisms 3 are disposed on the workbench 1, the workpieces are clamped and fixed on the workpiece clamping mechanisms 3, and laser welding is performed by the laser welding mechanism 2, and the arrangement of double stations is beneficial to improving the welding efficiency of the workpieces.

The laser welding mechanism 2 can flexibly adjust the orientation of the laser head according to the position of the workpiece, and has higher flexibility in use, as shown in fig. 2, the laser welding mechanism 2 comprises an X-axis linear module 201, a Y-axis linear module 202, an electric turntable 203 and a laser welding head 204, the X-axis linear module 201 is fixed on the top surface of the workbench 1, the Y-axis linear module 202 is fixed on the output end of the X-axis linear module 201, the electric turntable 203 is fixed on the output end of the Y-axis linear module 202, and the laser welding head 204 is fixed on the output end of the electric turntable 203.

The X-axis linear module 201 can drive the laser welding head 204 to move in the X-axis direction, the Y-axis linear module 202 can drive the laser welding head 204 to move in the Y-axis direction, and the electric turntable 203 can change the angle of the laser welding head 204 to adapt to different welding angles.

And the first group of workpiece clamping mechanisms 3 of the two groups of workpiece clamping mechanisms 3 arranged on the workbench 1 comprises a first fixture 31, a second fixture 32 and a third fixture 33, and the second group of workpiece clamping mechanisms 3 comprises a fourth fixture 34, a fifth fixture 35 and a sixth fixture 36, and the fixtures are selectively installed.

As shown in fig. 3, the first tool fixture 31 includes a mounting plate 311 fixed on the workbench 1, a driving motor 312 is fixed on the mounting plate 311, a rotating shaft 313 is rotatably arranged on the mounting plate 311 through a bearing, an output shaft of the driving motor 312 is connected with the rotating shaft 313 through a first belt transmission structure 314, a three-jaw chuck 315 is fixed on the top surface of the rotating shaft 313, a mounting frame 316 is fixed on the top surface of the mounting plate 311, a driving cylinder 317 is fixed on the mounting frame 316, a moving frame 318 is fixed on an output shaft of the driving cylinder 317, and a follow-up column 319 is rotatably arranged on the moving frame 318 through a bearing.

The workpiece is placed in the three-jaw chuck 315 and fastened through the three-jaw chuck 315, the workpiece comprises a T-shaped sleeve, after the workpiece is clamped by the three-jaw chuck 315, the head of the T-shaped sleeve is abutted against the top surface of the gripper of the three-jaw chuck 315, the motion frame 318 is retracted through the driving cylinder 317, the workpiece is abutted downwards by the follow-up column 319, the workpiece is fixed more stably, the workpiece can be welded after the workpiece is fixed, the output end of the driving motor 312 rotates in the welding process, and the rotating shaft 313 can drive the workpiece to rotate under the transmission effect of the belt transmission structure one 314, so that the workpiece is subjected to full-circle automatic welding.

And be fixed with spacing track on the mounting bracket 316, one side of motion frame 318 is fixed with the spacing slider of spacing track sliding connection, and when the actuating cylinder 317 stretches out and draws back, under the guide effect of spacing track and spacing slider, the motion of motion frame 318 is more stable.

In addition, two sets of vertical limiting posts corresponding to the moving frame 318 are fixed on the mounting frame 316, and the moving lowest point of the moving frame 318 can be limited by the vertical limiting posts.

As shown in fig. 4, on the basis of the first fixture 31, the second fixture 32 further comprises two support columns 321 fixed on the three-jaw chuck 315 and symmetrically distributed, the top surfaces of the two support columns 321 are fixed with support bars 322, the top surfaces of the support bars 322 form grooves 323 for the workpiece to abut against downwards, one side of the support bars 322 is provided with containing grooves 324 for the workpiece to be placed in, the bottom surfaces of the support bars 322 form avoidance grooves 325 upwards, and the gripping movement of the three-jaw chuck 315 is avoided.

As shown in fig. 5, on the basis of the second fixture 32, the third fixture 33 further comprises an L-shaped limiting column 331 fixed at the bottom end of the following column 319, an arc small groove 332 and an arc large groove 333 communicated with the arc small groove are formed at the bottom end of the L-shaped limiting column 331 inwards, the workpiece is limited by the arc large groove 333 of the L-shaped limiting column 331, a plurality of air holes 334 are formed in the inner side wall of the arc large groove 333, a plurality of clamping blocks 335 are formed in the inner top wall of the arc large groove 333 downwards, and the side surfaces of the clamping blocks 335 are slopes.

As shown in fig. 6-8, the fourth tool holder 34, the fifth tool holder 35 and the sixth tool holder 36 each comprise a fixed plate 341 fixed on the workbench 1, a fixed frame 342 is fixed on the top surface of the fixed plate 341, a rotating shaft 343 is rotatably arranged on the fixed frame 342 through a bearing, a rotating motor 344 is fixed on the fixed plate 341, an output shaft of the rotating motor 344 is connected with the rotating shaft 343 through a second belt transmission structure 345, a supporting table 346 for bearing a workpiece is fixed at the end of the rotating shaft 343, a corner cylinder 347 is fixed on the side surface of the supporting table 346, a pressing block 348 is fixed at the output end of the corner cylinder 347 through a connecting arm, and a supporting structure 349 for supporting the tail of the workpiece is further arranged on the top surface of the fixed plate 341.

The workpiece is borne by the supporting table 346 and the supporting structure 349, the rotating angle cylinder 347 can drive the pressing block 348 to press the workpiece on the supporting table 346, automatic welding is realized after the workpiece is fixed, the output shaft of the rotating motor 344 is utilized to rotate, and the supporting table 346 drives the workpiece to rotate under the transmission action of the second belt transmission structure 345, so that full-circle welding of the workpiece is realized.

As shown in fig. 6, a straight pipe through groove a1 for placing a straight pipe workpiece a is formed in a supporting table 346 in the fourth tool fixture 34, a bent pipe through groove B1 which is communicated with the straight pipe through groove a1 and used for placing a bent pipe workpiece B is further formed in the supporting table 346, the straight pipe workpiece a can be placed in the straight pipe through groove a1 during straight pipe processing, a bent pipe can be placed in the bent pipe through groove B1 during bent pipe processing, and a bent pipe limiting wheel c1 is further arranged in the bent pipe through groove B1 through rotation of a rotating shaft and used for limiting the placing position of the bent pipe workpiece B.

The supporting structure 3491 of the fourth tool clamp 34 comprises a telescopic cylinder 3491 fixed on the fixed frame 342, a movable frame 3491 is fixed on an output shaft of the telescopic cylinder 3491, a follow-up pressure head 3493 is rotatably arranged on the movable frame 3492 through a bearing, a supporting plate 3494 is fixed on the movable frame 3492, a pair of adjusting screws 3495 are connected to the supporting plate 3494 in a threaded mode, movable blocks 3496 are rotatably arranged on opposite faces of the two adjusting screws 3495 through bearings, movable grooves 3497 for the movable blocks 3496 to move back and forth are formed in the supporting plate 3494, and the bottom end portions of the movable blocks 3496 extend into the movable grooves 3497.

Two groups of guide sliding blocks which are symmetrically arranged are fixed on the bottom surface of the movable frame 3492, guide sliding rails which are in sliding connection with the guide sliding blocks are fixed on the top surface of the fixed plate 341, and the movable frame 3492 can move more stably under the limiting action of the guide sliding blocks and the guide sliding rails.

The supporting grooves for placing the tail parts of the workpieces are formed in the opposite surfaces of the two movable blocks 3496, the tail parts of the workpieces are placed in the supporting grooves of the movable blocks 3496, the telescopic air cylinders 3491 retract, the tail ends of the workpieces are abutted through the follow-up pressing heads 3493, the stability of the workpieces is improved, when the workpieces rotate, the follow-up pressing heads 3493 can rotate along with the workpieces, the stability of the workpieces during welding is further improved, and the welding precision is improved.

The positions of the two movable blocks 3496 can be adjusted through the adjusting screw 3495, the flexibility is higher in use, the top surface of the fixed plate 341 is also fixed with a plurality of horizontal limiting rods, and the maximum movement distance of the movable frame 3492 can be limited through the arrangement of the horizontal limiting rods.

As shown in fig. 7, a supporting table 346 in the fixture five 35 is provided with a straight pipe through groove two a2 for placing the straight pipe workpiece a, the supporting table 346 is also provided with an elbow pipe through groove two B2 communicated with the rectangular through groove a2, and the straight pipe through groove two a2 and the elbow pipe through groove two B2 can be used for placing the straight pipe workpiece a and the elbow pipe workpiece B respectively.

The supporting structure 349 in the fixture five 35 comprises a supporting seat 3591 fixed on a fixed plate 341, a limiting plate 3592 is fixed on the supporting seat 3591, a pair of supporting wheels 3593 are rotatably arranged on the limiting plate 3592 through a rotating shaft, a limiting groove 3594 is formed in the middle of the top surface of the limiting plate 3592, a supporting cylinder 3595 is fixed on the top surface of the fixed plate 341, an L-shaped bearing plate 3596 is fixed on an output shaft of the supporting cylinder 3595, a bearing groove 3597 is formed in the middle of the top surface of the L-shaped bearing plate 3596, a lifting plate 3598 is fixed on the side surface of the L-shaped bearing plate 3596 through an L-shaped connecting plate, and a pressing wheel 3599 located above the supporting wheels 3593 is rotatably arranged on the lifting plate 3598 through the rotating shaft. The tail end of the workpiece is supported by the supporting wheel 3593, the L-shaped bearing plate 3596 moves downwards, the lifting plate 3598 drives the pressing wheel 3599 to move downwards, and the tail end of the workpiece is pressed, so that the welding is convenient.

As shown in fig. 8, a straight pipe through groove three a3 for placing a workpiece is formed in a supporting table 346 in the fixture sixth 36, an arc-shaped positioning groove b3 which is communicated with the rectangular through groove and used for placing a T-shaped sleeve of the workpiece is further formed in the supporting table 346, and the straight pipe workpiece a can be limited through the arc-shaped positioning groove b3 and the straight pipe through groove three a 3.

The support structure 349 in tooling fixture six 36 is the same structure as the support structure 349 in tooling fixture five 35.

As shown in fig. 9-10, the workpieces are divided into a straight pipe workpiece a and a bent pipe workpiece B, and when welding, the straight pipe workpiece a is welded by adopting a first fixture 31, a second fixture 32, a third fixture 33 and a sixth fixture 36, and the bent pipe workpiece B is welded by adopting the first fixture 31, the second fixture 32, the fourth fixture 34 and the fifth fixture 35, and the specific welding method is as follows:

When welding a straight pipe workpiece A, firstly, installing a first fixture 31 on a left side station of a workbench 1, then assembling a first straight pipe component A1 and a second straight pipe component A2, downwards arranging a second straight pipe component A2, placing a ceramic part at the tail part of the second straight pipe component A2 into a clamping hole of a three-jaw chuck 315 of the first fixture 31, fastening the second straight pipe component A1 by the three-jaw chuck 315, downwards moving a follower column 319 to tightly support the first straight pipe component A1 on the second straight pipe component A2, moving a laser welding head 204 to an initial welding spot for welding after the fixing is finished, and simultaneously, driving the workpiece to rotate by the three-jaw chuck 315 to finish the welding of the first straight pipe component A1 and the second straight pipe component A2;

installing a support column 321 and a support bar 322 on a three-jaw chuck 315 to form a fixture two 32, assembling a straight pipe component three A3 with a welded straight pipe component A1 and a welded straight pipe component two A2, inserting the assembled components into a clamping hole of the three-jaw chuck 315 of the fixture two 32 downwards from a containing groove 324 at the front side of the support bar 322 until the head of the straight pipe component two A2 is abutted against a groove 323 of the support bar 322, limiting the welding height of the assembly by the support bar 322, clamping and fixing the assembly by the three-jaw chuck 315, moving a follow-up column 319 downwards to abut the straight pipe component three A3 on the straight pipe component two A2, and finally welding by utilizing a laser welding head 204, and rotating a workpiece for one circle to finish welding the straight pipe component A1, the straight pipe component two A2 and the straight pipe component three A3;

The L-shaped limit column 331 is mounted at the bottom end of the follow-up column 319 to form a fixture III 33, the straight tube part III A4 is assembled with the straight tube part A1, the straight tube part II A2 and the straight tube part III A3 after welding is completed, the combined part is inserted into a clamping hole of the three-jaw chuck 315, the L-shaped limit column 331 is driven to move downwards through the fastening of the three-jaw chuck 315, the straight tube part III A4 is abutted to an assembly of the straight tube parts I to III through the arc-shaped large groove 333, during assembly, the straight tube part III A4 is sleeved outside a ceramic column of the assembly of the straight tube part I to III, and as the straight tube part III A4 and the ceramic column of the assembly of the straight tube part I to III have a certain gap, in order to ensure the accuracy of the assembly of the straight tube part III A4, when the straight tube part III A4 moves into the arc-shaped large groove 333, the position of the part III A4 can be finely adjusted by the adsorption force generated by the air hole 334 until the top surface of the straight tube part III A4 abuts against the inner wall of the large groove 333, the top wall 335 of the straight tube part III A4 can be welded with the assembly of the straight tube part I to the straight tube part 3, and the assembly of the straight tube part III A4 can be welded with the assembly 3, and the straight tube part III A4 can be welded firmly, and the assembly 3 can be welded, and the assembly 3 is welded, and the straight tube part 3 is welded;

And finally, installing the fixture six 36 on the right station of the workbench 1, assembling the assembly of the straight pipe parts one to four and the straight pipe part five A5, then placing the assembly on the fixture six 36, supporting the assembly of the straight pipe parts one to four through the supporting table 346 of the fixture six 36, supporting the straight pipe part five A5 through the supporting wheel 3593, moving the pressing wheel 3599 downwards, fixing the straight pipe part five A5, welding by using the laser welding head 204, and driving the workpiece to rotate by the rotating shaft 343, thus finishing welding.

When the elbow workpiece B is welded with the elbow part B1 and the elbow part B2 and the elbow part one to two combined parts are welded with the elbow part three B3, the welding method is the same as that of the straight pipe workpiece A, and then when the elbow part one to three combined parts are welded with the elbow part four B4, the tooling fixture four 34 is arranged on the right side station of the workbench 1, the elbow part one to three combined parts can be supported by the supporting groove of the movable block 3496, the elbow part four B4 is supported by the elbow through groove one B1 on the supporting table 346 and is pressed by the pressing block 348, the movable frame 3492 moves to the side close to the supporting table 346, the follow-up pressing head 3493 presses the elbow part one to three combined parts to the end part of the elbow part four B4, and then the workpiece is welded by the laser welding head 204, and the workpiece rotates for one circle to finish welding;

And finally, detaching the tool clamp IV 34, replacing the tool clamp IV with the tool clamp V35, placing the assembly of the bent pipe parts I to IV on the bent pipe through groove II B2 on the supporting table 346, pressing the bent pipe part V B5 on the supporting wheel 3593 through the pressing wheel 3599, and welding the bent pipe part V B5 and the joint of the assembly of the bent pipe parts I to IV by using the laser welding head 204, wherein the welding can be completed by rotating the workpiece for one circle.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The welding device for the automobile temperature sensor is characterized by comprising a workbench (1), wherein a laser welding mechanism (2) and two groups of workpiece clamping mechanisms (3) are arranged on the workbench (1);

The first group of workpiece clamping mechanisms (3) comprises a first fixture (31), a second fixture (32) and a third fixture (33), the second group of workpiece clamping mechanisms (3) comprises a fourth fixture (34), a fifth fixture (35) and a sixth fixture (36), the workpieces are divided into a straight pipe workpiece A and a bent pipe workpiece B, and when welding is carried out, the straight pipe workpiece A is welded by the first fixture (31), the second fixture (32), the third fixture (33) and the sixth fixture (36), and the bent pipe workpiece B is welded by the first fixture (31), the second fixture (32), the fourth fixture (34) and the fifth fixture (35);

The fixture comprises mounting plates (311) fixed on a workbench (1), wherein a driving motor (312) is fixed on each mounting plate (311), a rotating shaft (313) is rotatably arranged on each mounting plate (311) through a bearing, an output shaft of each driving motor (312) is connected with the corresponding rotating shaft (313) through a first belt transmission structure (314), a three-jaw chuck (315) is fixed on the top surface of each rotating shaft (313), a mounting frame (316) is fixed on the top surface of each mounting plate (311), and a follow-up column (319) capable of moving up and down is arranged on each mounting frame (316);

The second fixture clamp (32) further comprises two supporting columns (321) which are fixed on the three-jaw chuck (315) and are symmetrically distributed, supporting strips (322) are fixed on the top surfaces of the two supporting columns (321), grooves (323) for the T-shaped sleeves of the workpieces to be abutted are formed on the top surfaces of the supporting strips (322) downwards, a containing groove (324) for the workpieces to be placed in is formed in one side of each supporting strip (322), and an avoidance groove (325) is formed on the bottom surface of each supporting strip (322) upwards;

The third fixture (33) comprises a structure of the second fixture (32), and further comprises an L-shaped limiting column (331) fixed at the bottom end of the follow-up column (319), wherein an arc-shaped small groove (332) and an arc-shaped large groove (333) communicated with the arc-shaped small groove are formed inwards at the bottom end of the L-shaped limiting column (331), a plurality of air holes (334) are formed in the inner side wall of the arc-shaped large groove (333), a plurality of clamping blocks (335) are formed downwards in the inner top wall of the arc-shaped large groove (333), and the side faces of the clamping blocks (335) are slope surfaces;

The four-six tool clamps comprise fixing plates (341) fixed on a workbench (1), a fixing frame (342) is fixed on the top surface of each fixing plate (341), a rotating shaft (343) is arranged on each fixing frame (342) in a rotating mode through a bearing, each rotating shaft (343) can actively rotate, a supporting table (346) for bearing a workpiece is fixed at the end of each rotating shaft (343), corner cylinders (347) are fixed on the side faces of the supporting tables (346), pressing blocks (348) are fixed at the output ends of the corner cylinders (347) through connecting arms, and supporting structures (349) for supporting the tail parts of the workpieces are further arranged on the top surface of each fixing plate (341);

a first straight pipe through groove (a 1) for placing a straight pipe workpiece A is formed in a supporting table (346) in the fourth tool clamp (34), a first bent pipe through groove (B1) communicated with the first straight pipe through groove (a 1) and used for placing a bent pipe workpiece B is further formed in the supporting table (346), and a bent pipe limiting wheel (c 1) is further arranged in the first bent pipe through groove (B1) through rotation of a rotating shaft; the supporting structure (349) in the fourth tool clamp (34) comprises a follow-up pressing head (3493) capable of horizontally moving and a pair of movable blocks (3496) capable of relatively moving or oppositely moving;

The utility model provides a straight tube logical groove two (a 2) that supplies straight tube work piece A to place has been seted up on brace table (346) in frock clamp five (35), still be equipped with on brace table (346) with the return bend logical groove two (b 2) of rectangle logical groove (a 2) intercommunication, bearing structure (349) are including being fixed in supporting seat (3591) on fixed plate (341) in frock clamp five (35), be fixed with limiting plate (3592) on supporting seat (3591), be equipped with a pair of backing wheel (3593) through the pivot rotation on limiting plate (3592), limiting groove (3594) have been seted up at the middle part of limiting plate (3592) top surface, the top surface of fixed plate (341) is fixed with supporting cylinder (3595), the output shaft of supporting cylinder (3595) is fixed with L type loading board (3596), the middle part of L type loading board (3596) top surface is seted up loading groove (3597), the side of L type loading board (3596) is fixed with lifter plate (3598) through L type connecting plate, lifter plate (3598) are equipped with through pivot (3599) top rotation.

2. The welding device for an automotive temperature sensor of claim 1, wherein: the laser welding mechanism (2) comprises an X-axis linear module (201), a Y-axis linear module (202), an electric turntable (203) and a laser welding head (204), wherein the X-axis linear module (201) is fixed on the top surface of the workbench (1), the Y-axis linear module (202) is fixed at the output end of the X-axis linear module (201), the electric turntable (203) is fixed at the output end of the Y-axis linear module (202), and the laser welding head (204) is fixed at the output end of the electric turntable (203).

3. An automotive temperature sensor assembly as set forth in claim 2 wherein: be fixed with on mounting bracket (316) drive cylinder (317), the output shaft of drive cylinder (317) is fixed with motion frame (318), follow-up post (319) are located on motion frame (318) through the bearing rotation, be fixed with spacing track on mounting bracket (316), one side of motion frame (318) is fixed with the spacing slider with spacing track sliding connection, be fixed with on mounting bracket (316) with two sets of vertical spacing posts that correspond of motion frame (318).

4. A welding device for an automotive temperature sensor as claimed in claim 3, wherein: the fixed plate (341) is fixedly provided with a rotating motor (344), an output shaft of the rotating motor (344) is connected with a rotating shaft (343) through a belt transmission structure II (345), a telescopic cylinder (3491) is fixed on a fixed frame (342), an output shaft of the telescopic cylinder (3491) is fixedly provided with a movable frame (3492), a follow-up pressing head (3493) is rotationally arranged on the movable frame (3492) through a bearing, a supporting plate (3494) is fixedly arranged on the movable frame (3492), a pair of adjusting screws (3495) are connected to the supporting plate (3494) in a threaded mode, two movable blocks (3496) are respectively arranged on opposite faces of the adjusting screws (3495) in a rotating mode through bearings, movable grooves (3497) for the movable blocks (3496) to move forwards and backwards are formed in the supporting plate (3494), and bottom end portions of the movable blocks (3496) extend into the movable grooves (3497).

5. The welding device for an automotive temperature sensor of claim 4, wherein: the straight pipe through groove III (a 3) for placing a workpiece is formed in a supporting table (346) in the tool fixture six (36), an arc-shaped positioning groove (b 3) communicated with the rectangular through groove and used for placing a T-shaped sleeve of the workpiece is further formed in the supporting table (346), and the supporting structure (349) in the tool fixture six (36) is identical to the supporting structure (349) in the tool fixture five (35) in structure.