CN213135646U

CN213135646U - Automatic spot welding fixture device for hot forming stamping parts

Info

Publication number: CN213135646U
Application number: CN202021852710.4U
Authority: CN
Inventors: 薛晓东
Original assignee: Yantai Demao Auto Parts Co ltd
Current assignee: Yantai Demao Auto Parts Co ltd
Priority date: 2020-08-29
Filing date: 2020-08-29
Publication date: 2021-05-07
Anticipated expiration: 2030-08-29

Abstract

The utility model relates to a thermoforming punching press part automatic spot welding fixture device, it includes support and a plurality of compressing tightly the piece that is used for compressing tightly the part, the top of support is the level and is provided with the backing plate, the backing plate is provided with the adjusting device who is used for adjusting part position, adjusting device includes X axle adjusting part and Y axle adjusting part, X axle adjusting part includes a plurality of first guide rails of connecting in the backing plate and a plurality of slides respectively connect in the first board of accepting of a plurality of first guide rails, Y axle adjusting part includes a plurality of second guide rails of connecting respectively in a plurality of first both ends of accepting the board and slides and connect in the mounting panel of a plurality of second guide rails, the length direction perpendicular to second guide rail of first guide rail, compress tightly the piece and set up in the mounting panel. This application has the effect of the position of being convenient for adjust the part.

Description

Automatic spot welding fixture device for hot forming stamping parts

Technical Field

The application relates to the field of welding fixtures, in particular to an automatic spot welding fixture device for a hot forming stamping part.

Background

Welding, also called fusion or melt welding, is a manufacturing process and technique for joining thermoplastic materials such as metals by heating, high temperature or high pressure. When welding more complicated product, need fix a position it, prevent among the welding process, because of placing factors such as unstability, the product takes place the displacement, drops, influences welding effect.

Chinese patent with application number cn201920396194.x in the related art discloses an electric welding clamp, which has the technical key points that: the novel welding table comprises a table top, a supporting leg, a placing rack, a fixing plate, a connecting sleeve, a sliding rod, a spring, a clamping plate, a positioning hole, a bottom plate, a supporting plate, a table top sub-portion connection supporting leg, the placing rack is connected to the left side of the table top, a welding gun is connected to the placing rack, the fixing plate is connected to the upper portion of the table top, the lower end of the fixing plate is provided with a protrusion, the table top is provided with a groove, the protrusion is matched with the groove, the groove is connected to the protrusion, the fixing plate is connected with the connecting sleeve through screws, the connecting sleeve is connected with the sliding rod, the sliding rod is connected with a sliding block, the sliding block is matched with the sliding rail, the sliding block is connected with the sliding rail, the sliding block slides in the sliding rail, the spring.

The existing processes such as patch welding are usually done to the panel that adopts thermoforming in automobile manufacturing, mostly adopt welding robot or automatic electric welding device, and it is when using, often need be located the welded panel in different positions, and when using above-mentioned technical scheme, the relative position adjustment of panel is comparatively inconvenient, and the welding is done to the welding of being not convenient for.

With respect to the related art described above, the inventors consider that there is a defect that welding of parts is inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the position of adjusting the part, this application provides a hot forming punching press part stitch welding fixture device.

The application provides a pair of automatic spot welding fixture device of hot forming punching press part adopts following technical scheme:

the utility model provides a hot forming punching press part automatic spot welding fixture device, includes support and a plurality of the piece that compresses tightly that is used for compressing tightly the part, the top of support is the level and is provided with the backing plate, the backing plate is provided with the adjusting device who is used for adjusting part position, adjusting device includes X axle adjusting part and Y axle adjusting part, X axle adjusting part includes a plurality of first guide rails of connecting in the backing plate and a plurality of slides respectively connect in the first board of accepting of a plurality of first guide rails, Y axle adjusting part includes a plurality of second guide rails of connecting respectively in a plurality of first both ends of accepting the board and slides and connect in the mounting panel of a plurality of second guide rails, the length direction perpendicular to second guide rail of first guide rail, compress tightly the piece and set up in the mounting panel.

Through adopting above-mentioned technical scheme, when using, the part is fixed in the mounting panel through compressing tightly the piece, and simultaneously when the position of part is adjusted to needs, only need make first accepting the length direction of board along first guide rail slide to Y axle adjusting part accepts the board through first and connects in first guide rail, only need make the mounting panel slide along the length direction of second guide rail this moment, can adjust the relative position of part equidirectional on the horizontal plane.

Optionally, a connecting plate connected to the second guide rail is arranged below the second guide rail, and two ends of the connecting plate pair are respectively connected to two ends of the plurality of first bearing plates.

Through adopting above-mentioned technical scheme, the second guide rail passes through the connecting plate to be connected in a plurality of first boards of accepting, and stability when can effectual optimization second guide rail installation reduces the influence to the stability of second guide rail installation when sliding through adjacent first board of accepting each other.

Optionally, an opening is formed in the middle of the mounting plate.

By adopting the technical scheme, when patch welding is carried out on the plate, heat generated by welding can be dissipated in time and the influence of the mounting plate on the plate welding can be reduced.

Optionally, the base plate is provided with a control member for controlling the sliding of the first bearing plate, and the plurality of first bearing plates are also provided with a control member for controlling the sliding of the mounting plate.

Through adopting above-mentioned technical scheme to adjust the position of first board and mounting panel when using.

Optionally, the control piece includes control slider and wears to establish and threaded connection in control slider's control screw rod, two control screw rod rotates respectively to be connected in backing plate and a plurality of first board of accepting, two control slider connects respectively in first board and the mounting panel of accepting.

Through adopting above-mentioned technical scheme, when the position of the relative backing plate of part needs adjusting, only need to rotate one or two in two control screw to make at least one control slider slide along the axial of its control screw who connects, with the position that is used for adjusting mounting panel and first board of accepting, and can make first board of accepting and the auto-lock that can slide of mounting panel through control slider threaded connection in control screw.

Optionally, the backing plate and the first receiving plate are respectively provided with a driving motor for driving and controlling the rotation of the screw rod, and the backing plate and the first receiving plate are respectively provided with a fixing part for fixedly mounting the driving motor.

Through adopting above-mentioned technical scheme, when adjusting part mounted position and need rotate control screw, only need through driving motor drive control screw can, two driving motor are fixed in backing plate and first board of accepting through two mountings respectively.

Optionally, the mounting is including dismantling the first fixed plate that connects in driving motor and a plurality of second fixed plate that is fixed in first fixed plate and keeps away from driving motor, the first fixed plate of second fixed plate perpendicular to, the second fixed plate can be dismantled and connect in backing plate or first board of accepting, the output of first fixed plate is worn to locate first fixed plate and is connected in control screw.

Through adopting above-mentioned technical scheme, when using, driving motor connects in the second fixed plate through first fixed plate, second fixed plate fixed connection is in backing plate or first board of accepting, in order to be used for making during the installation, driving motor's output shaft can comparatively be close the backing plate relatively or first last face of accepting the board, thereby can reduce the influence of driving motor output shaft to the mounting panel, first board and the backing plate of accepting the interval between, so that the mounting panel, first board and the backing plate of accepting can laminate more relatively between, can optimize the fixed stability of driving motor simultaneously.

Optionally, the output shaft of the driving motor is connected with a coupler for connecting the driving motor to the control screw.

By adopting the technical scheme, the possibility of damage to the driving motor caused by sudden stop and the like during use can be effectively reduced.

Optionally, the pressing piece comprises a mounting seat connected to the mounting plate, a pressing arm hinged to the mounting seat and a pressing rod hinged to the pressing arm, the pressing arm extends towards the center of the mounting plate, the pressing rod is located on one side, away from the center of the mounting plate, of the pressing rod, the pressing rod is hinged to the mounting seat through a connecting rod, and a pre-tightening piece used for pressing a part is arranged at one end, away from the mounting seat, of the pressing rod.

Through adopting above-mentioned technical scheme, when needs compress tightly the part for two pin joints of connecting rod and depression bar can be in same straight line with the pin joint three point that compresses tightly the arm, make mount pad, compress tightly arm and depression bar can be in the dead point position, thereby can make the arm that compresses tightly the part through compressing tightly the pretension piece in the mounting panel.

Optionally, the one end that the mount pad was kept away from to the arm that compresses tightly is seted up the mounting hole of vertical setting, the mounting hole is rectangular shape hole, the pretension piece includes two pretension nuts with the centre gripping of opening border about the mounting hole and wears to establish and threaded connection in two pretension nut's pretension screw rod.

By adopting the technical scheme, when the device is used, the distance between the surfaces of the opposite mounting plates during fixing can be adjusted by rotating the pre-tightening nut, so that the device is suitable for plate parts with different thicknesses. And a pressing block used for assisting in pressing the part is arranged at one end, facing the mounting plate, of the pre-tightening screw rod.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the Y-axis adjusting component is used, the part is fixed on the mounting plate through the pressing piece, and meanwhile, when the position of the part needs to be adjusted, only the first bearing plate needs to slide along the length direction of the first guide rail, and the Y-axis adjusting component is connected to the first guide rail through the first bearing plate, at the moment, only the mounting plate needs to slide along the length direction of the second guide rail, and the relative positions of the part on the horizontal plane in different directions can be adjusted;

2. when the fixed position of the relative backing plate of adjusting part, only need to make driving motor pass through the shaft coupling and drive the control screw and rotate to make the control slide along the axial of its control screw who connects slide, slide or the mounting panel slides along the length direction of second guide rail along the length direction of first guide rail in order to drive first accepting the board, thereby can make the part can adjust the position of relative backing plate.

Drawings

FIG. 1 is a schematic structural view of an embodiment of the present application in use;

FIG. 2 is a top view of a mounting plate according to an embodiment of the present application;

FIG. 3 is a top view of an embodiment of the present application;

FIG. 4 is a side view of a mount according to an embodiment of the present application;

FIG. 5 is an enlarged schematic view of portion A of FIG. 1;

fig. 6 is an enlarged schematic view of a portion B in fig. 1.

Description of reference numerals: 1. a support; 11. a base plate; 12. a control member; 121. controlling the sliding block; 122. controlling the screw; 123. a drive motor; 124. a coupling; 13. a fixing member; 131. a first fixing plate; 132. a second fixing plate; 133. an installation port; 14. a universal wheel; 15. a support member; 151. a support coil; 152. a support screw; 153. a support nut; 2. a compression member; 21. a mounting seat; 22. a pressing arm; 221. mounting holes; 23. a pressure lever; 24. pre-tightening piece; 241. pre-tightening the nut; 242. pre-tightening the screw; 243. a compression block; 244. a gasket; 3. an adjustment device; 31. an X-axis adjustment assembly; 311. a first guide rail; 312. a first bearing plate; 313. a second bearing plate; 32. a Y-axis adjustment assembly; 321. a second guide rail; 322. mounting a plate; 323. a connecting plate; 324. and (4) opening.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses thermoforming punching press part automatic spot welding fixture device. Referring to fig. 1, the clamping apparatus includes a bracket 1 and a plurality of pressing members 2 for pressing the parts. The top of the bracket 1 is horizontally provided with a backing plate 11 for supporting, and the backing plate 11 is provided with an adjusting device 3 for adjusting the position of a part.

Adjusting device 3 includes X axle adjusting part 31 and Y axle adjusting part 32, and X axle adjusting part 31 includes that two are connected in the first guide rail 311 of backing plate 11 and two slide respectively and connect in the first board 312 of accepting at two first guide rail 311 both ends, and two first guide rails 311 are parallel to each other, and two first length direction of accepting board 312 are parallel to each other and all are the horizontal setting, and the length direction of first guide rail 311 is on a parallel with the length direction of first board 312. The first guide rail 311 and the first receiving plate 312 may be provided in three, four, or the like, and the pressing member 2 is provided on the upper plate surface of the mounting plate 322.

The Y-axis adjusting assembly 32 includes two second guide rails 321 connected to two ends of the two first receiving plates 312, respectively, and an installation plate 322 slidably connected to the two second guide rails 321, wherein a length direction of the first guide rail 311 is perpendicular to a length direction of the second guide rail 321. The first guide rail 311 and the second guide rail 321 are both linear guide rails, the first receiving plate 312 is fixed to the guide block of the first guide rail 311, and the mounting plate 322 is fixedly connected to the guide block of the second guide rail 321. Wherein, the second guiding rail 321 can also be provided with three, four, etc.

Referring to fig. 1 and 2, an opening 324 is formed in the middle of the mounting plate 322 for timely heat dissipation and reducing the influence of the mounting plate 322 on the plate welding when patch welding is performed on the plate.

When the Y-axis adjusting component 32 is connected to the first guide rail 311 through the first bearing plate 312, at this time, only the mounting plate 322 needs to slide along the length direction of the second guide rail 321, and the relative positions of the parts in different directions on the horizontal plane can be adjusted.

The support 1 is a rectangular frame structure formed by surrounding square pipes, a frame edge at the top of the support 1 is downwards sunken and bent to form a bent part, a baffle is fixedly connected to one axial end face of the support 1 along the first guide rail 311, and a bottom plate is horizontally arranged at the lower part of the support 1.

Referring to fig. 1, a connecting plate 323 connected to the second guide rail 321 is disposed below the second guide rail 321, two ends of the connecting plate 323 in the longitudinal direction are respectively connected to two ends of the two first receiving plates 312, the plate surface of the connecting plate 323 is parallel to the plate surface of the first receiving plates 312, and the longitudinal direction of the connecting plate 323 is perpendicular to the longitudinal direction of the first receiving plates 312. When the connecting plate is used, the mounting stability of the second guide rail 321 can be optimized through the connecting plate 323, and the influence of the mounting of the second guide rail 321 on the sliding of the first bearing plate 312 relative to the first guide rail 311 is reduced.

The backing plate 11 is provided with a control member 12 for controlling the sliding movement of the first receiving plates 312, and one end of the two first receiving plates 312 is also provided with a control member 12 for controlling the sliding movement of the mounting plate 322 so as to adjust the relative positions of the parts when in use.

The control member 12 comprises a control slider 121 and a control screw 122 passing through and threaded with the control slider 121, one control screw 122 is rotatably connected to the base plate 11, and the length direction of the control screw 122 is parallel to the first guide rail 311; the other control screw 122 is rotatably connected to the ends of the two first receiving plates 312, and the length direction of the control screw 122 is parallel to the second guide rail 321. The two control sliders 121 are connected to one of the first receiving plate 312 and the mounting plate 322, respectively.

When the position of the part relative to the base plate 11 needs to be adjusted, only one or two of the two control screws 122 need to be rotated, so that at least one control slider 121 slides along the axial direction of the control screw 122 connected with the control slider 121, the position of the mounting plate 322 and the first bearing plate 312 can be adjusted, and the first bearing plate 312 and the mounting plate 322 can slide and self-lock by being connected with the control screw 122 through the control slider 121 in a threaded manner.

Referring to fig. 1, one end of each of the two first receiving plates 312 is connected to a second receiving plate 313 parallel to the two first receiving plates, and the control screw 122 rotatably connected to the two first receiving plates 312 is rotatably connected to the second receiving plate 313 to reduce interference with the second guide rail 321.

The end of the control screw 122 is provided with a driving motor 123 for driving the control screw to rotate, and the backing plate 11 and the second receiving plate 313 are respectively provided with a fixing member 13 for fixing the driving motor 123, such that one of the driving motors 123 is connected to the backing plate 11 through the fixing member 13, and the other driving motor 123 is connected to the first receiving plate 312 through the other fixing member 13 and the second receiving plate 313. Therefore, the position of the part can be adjusted only by driving one or two of the two control screws 122 to rotate through the two driving motors 123, so that the use is facilitated.

Referring to fig. 3, the output shaft of the driving motor 123 is provided with a coupling 124, and the power input end and the output end of the coupling 124 are respectively connected to the output shaft of the driving motor 123 and the control screw 122, so as to reduce the possibility of damage to the driving motor 123 due to sudden stop during use.

Referring to fig. 3 and 4, the fixing member 13 includes a first fixing plate 131 detachably coupled to a side of the housing of the driving motor 123 facing the output end and two second fixing plates 132 fixed to the first fixing plate 131 away from the driving motor 123, the second fixing plates 132 being perpendicular to the first fixing plate 131 and both perpendicular to the pad 11, and the driving motor 123 may be coupled to the first fixing plate 131 by bolts or screws. The middle of the first fixing plate 131 is opened with a mounting opening 133 for assisting in mounting the driving motor 123 and allowing the output shaft of the driving motor 123 to pass through, and the mounting opening 133 is located between the two second fixing plates 132. The second fixing plate 132 is an isosceles trapezoid plate-shaped structure, and the long side thereof is fixedly connected to the first fixing plate 131, and the right-angle side of the second fixing plate 132 is fixedly connected to the backing plate 11 or the second bearing plate 313 through a bolt. The output shaft of the driving motor 123 is inserted into the mounting opening 133 and connected to the control screw 122.

When the mounting plate is used, the driving motor 123 is connected to the second fixing plate 132 through the first fixing plate 131, and the second fixing plate 132 is fixedly connected to the base plate 11 or the second receiving plate 313, so that during mounting, an output shaft of the driving motor 123 can be relatively close to an upper plate surface of the base plate 11 or the first receiving plate 312, and therefore the influence of the output shaft of the driving motor 123 on the distance between the mounting plate 322, the first receiving plate 312 and the base plate 11 can be reduced, the mounting plate 322, the first receiving plate 312 and the base plate 11 can be relatively attached to each other, and meanwhile, the fixing stability of the driving motor 123 can be optimized.

Referring to fig. 5, the pressing member 2 includes a mounting base 21 connected to the mounting plate 322, a pressing arm 22 having one end hinged to the mounting base 21, and a pressing rod 23 hinged to the pressing arm 22, the other end of the pressing arm 22 extends toward the center of the mounting plate 322 along the length direction of the second guide rail 321, and the end of the pressing arm 22 away from the mounting base 21 is provided with a preload member 24 for pressing the component. The middle part of the pressure lever 23 is hinged to the mounting base 21 through a connecting rod, the middle part of the mounting base 21 is provided with a concave part, so that three points of two hinge points of the connecting rod and the hinge point of the pressure lever 23 and the pressing arm 22 can be in the same straight line, the mounting base 21, the pressing arm 22 and the pressure lever 23 can be located at dead point positions, and the pressing arm 22 can press parts on the mounting plate 322 through the pre-tightening piece 24.

The one end that the clamp arm 22 kept away from the mount pad 21 is seted up vertically with the mounting hole 221 that the clamp arm 22 runs through, and the mounting hole 221 is rectangular shape hole. The pretensioning member 24 includes two pretensioning nuts 241 and a pretensioning screw 242 threaded through and connected to the two pretensioning nuts 241, the two pretensioning nuts 241 clamp the opening edge of the mounting hole 221, and the pretensioning screw 242 is threaded through the mounting hole 221. When the device is used, the distance between the plate surfaces of the mounting plates 322 in the fixing process can be adjusted by rotating the pre-tightening nuts 241, so that the device is suitable for plate parts with different thicknesses. And the end of the pretension screw 242 facing the mounting plate 322 is provided with a hold-down block 243 for assisting in holding down the part.

Gaskets 244 are arranged between the opening edges of the two ends of the pre-tightening nut 241 and the mounting hole 221, and the side edges of the two gaskets 244 are respectively turned over in the opposite direction to clamp the pressing arm 22, so that the stability during clamping is optimized.

Referring to fig. 6, universal wheels 14 are respectively provided at four corners of the bottom of the stand 1, the universal wheels 14 may be selected from a general universal wheel or a self-locking universal wheel to facilitate transportation, and support members 15 for supporting are provided at side portions of the universal wheels 14.

The supporting member 15 includes a supporting screw 151 fixed to the bracket 1, a supporting screw 152 threaded through and screwed to the supporting screw 151, and a supporting nut 153 screwed to the supporting screw 152, the supporting screw 151 and the supporting screw 152 are both vertically disposed, and the supporting nut 153 abuts against the lower end of the supporting screw 151. Thereby can make when needing to fix a position support 1 after transporting, only need rotate support screw 152 make its lower extreme butt in ground can, then rotate support nut 153 butt in the lower extreme that supports solenoid 151 to the auxiliary stay optimizes the stability of supporting. And the lower end of the support screw 152 is provided with a support plate perpendicular thereto to optimize the stability of the support screw 152 when it is set against the ground.

The implementation principle of the automatic spot welding fixture device for the hot forming stamping part is as follows: when the device is used, the pressing rod 23 is rotated, so that three points of two hinge points of the connecting rod and the hinge point of the pressing rod 23 and the pressing arm 22 are in the same straight line, the mounting seat 21, the pressing arm 22 and the pressing rod 23 are in dead point positions, and the pressing arm 22 can press a part on the mounting plate 322 through the pre-tightening piece 24; meanwhile, when the position of the part is adjusted, the relative position of the part on the horizontal plane in different directions can be adjusted only by enabling the driving motor 123 to drive the control screw 122 to rotate through the coupler 124, so that the control slider 121 slides to drive the first bearing plate 312 to slide along the length direction of the first guide rail 311 or the mounting plate 322 to slide along the length direction of the second guide rail 321.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a hot forming punching press part automatic spot welding fixture device, includes support (1) and a plurality of compressing tightly (2) that are used for compressing tightly the part, its characterized in that: the top of support (1) is the level and is provided with backing plate (11), backing plate (11) are provided with adjusting device (3) that are used for adjusting the part position, adjusting device (3) include X axle adjusting part (31) and Y axle adjusting part (32), X axle adjusting part (31) include a plurality of connect in first guide rail (311) of backing plate (11) and a plurality of slide respectively connect in the first board (312) of accepting of a plurality of first guide rails (311), Y axle adjusting part (32) include a plurality of connect respectively in second guide rail (321) at the both ends of a plurality of first board (312) and slide and connect in mounting panel (322) of a plurality of second guide rails (321), the length direction perpendicular to second guide rail (321) of first guide rail (311), compress tightly piece (2) and set up in mounting panel (322).

2. The automated spot welding fixture apparatus for thermoformed stamped parts according to claim 1, wherein: and a connecting plate (323) connected with the second guide rail (321) is arranged below the second guide rail, and two ends of the pair of connecting plates (323) are respectively connected with two ends of the plurality of first bearing plates (312).

3. The automated spot welding fixture apparatus for thermoformed stamped parts according to claim 1, wherein: an opening (324) is formed in the middle of the mounting plate (322).

4. The automated spot welding fixture apparatus for thermoformed stamped parts according to claim 1, wherein: the base plate (11) is provided with a control part (12) for controlling the sliding of the first bearing plate (312), and the first bearing plates (312) are also provided with the control part (12) for controlling the sliding of the mounting plate (322).

5. The automated spot welding fixture apparatus for thermoformed stamped parts according to claim 4, wherein: the control piece (12) comprises a control slider (121) and control screws (122) which penetrate through the control slider (121) and are in threaded connection with the control slider (121), the two control screws (122) are respectively and rotatably connected with the base plate (11) and the first bearing plates (312), and the two control sliders (121) are respectively connected with the first bearing plates (312) and the mounting plate (322).

6. The automated spot welding fixture apparatus for thermoformed stamped parts according to claim 5, wherein: the bearing plate (11) and the first bearing plate (312) are respectively provided with a driving motor (123) for driving the control screw (122) to rotate, and the bearing plate (11) and the first bearing plate (312) are respectively provided with a fixing piece (13) for fixedly mounting the driving motor (123).

7. The automated spot welding fixture apparatus for thermoformed stamped parts according to claim 6, wherein: the fixing part (13) comprises a first fixing plate (131) detachably connected to the driving motor (123) and a plurality of second fixing plates (132) fixed to the first fixing plate (131) and far away from the driving motor (123), the second fixing plates (132) are perpendicular to the first fixing plate (131), the second fixing plates (132) are detachably connected to the base plate (11) or the first bearing plate (312), and the output end of the first fixing plate (131) penetrates through the first fixing plate (131) and is connected to the control screw (122).

8. The automated spot welding fixture apparatus for thermoformed stamped parts according to claim 6, wherein: and an output shaft of the driving motor (123) is connected with a coupling (124) which is connected with the control screw (122).

9. The automated spot welding fixture apparatus for thermoformed stamped parts according to claim 1, wherein: the pressing piece (2) comprises a mounting seat (21) connected to the mounting plate (322), a pressing arm (22) hinged to the mounting seat (21) and a pressing rod (23) hinged to the pressing arm (22), the pressing arm (22) extends towards the center of the mounting plate (322), the pressing rod (23) is located on one side, away from the center of the mounting plate (322), of the pressing rod (23), the pressing rod (23) is hinged to the mounting seat (21) through a connecting rod, and a pre-tightening piece (24) used for pressing a part is arranged at one end, away from the mounting seat (21), of the pressing rod (23).

10. The automated spot welding fixture apparatus for thermoformed stamped parts according to claim 9, wherein: the one end that compresses tightly arm (22) kept away from mount pad (21) is seted up vertical mounting hole (221) that set up, mounting hole (221) are rectangular shape hole, pretension piece (24) include two pretension nut (241) with the centre gripping of mounting hole (221) upper and lower opening border and wear to establish and threaded connection in pretension screw rod (242) of two pretension nuts (241).