CN110842382B

CN110842382B - Welding fixture

Info

Publication number: CN110842382B
Application number: CN201911126541.8A
Authority: CN
Inventors: 黎鹏; 于成松; 潘佐梅; 唐景龙; 陈根余; 陈焱; 高云峰
Original assignee: Han s Laser Technology Industry Group Co Ltd; Hans Laser Smart Equipment Group Co Ltd
Current assignee: Han s Laser Technology Industry Group Co Ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2021-11-02
Anticipated expiration: 2039-11-18
Also published as: CN110842382A

Abstract

The invention relates to a welding fixture, which is used for clamping a first workpiece and a second workpiece, and comprises: the first workpiece and the second workpiece are both placed on the substrate; a cover plate which can be buckled with the base plate; the positioning mechanism is arranged on the substrate and used for positioning the second workpiece; the lateral pressing mechanism comprises a first lateral pressing mechanism and a second lateral pressing mechanism which are connected with each other, the first lateral pressing mechanism is movably arranged on the substrate, the first lateral pressing mechanism moves along a first direction to press a first workpiece in the first direction, and simultaneously drives the second lateral pressing mechanism to move in a second direction to press the first workpiece in the second direction, and the first direction is perpendicular to the second direction; and the clamping mechanism is movably connected to the base plate so as to clamp the second workpiece. According to the welding fixture, the side pressing mechanisms can tightly press the first workpiece in different directions, and the clamping mechanisms can tightly press the second workpiece, so that each surface of the two workpieces is completely tightly pressed and is not easy to loosen.

Description

Welding fixture

Technical Field

The invention relates to the technical field of clamps, in particular to a welding clamp.

Background

In the application of laser welding, the fixture plays an important role in the welding quality and the welding precision of workpieces. However, when two workpieces need to be compressed, the existing clamp cannot completely compress each surface of the two workpieces at the same time, so that the two workpieces are easy to loosen, and the quality of products are influenced.

Disclosure of Invention

In view of this, it is necessary to provide a welding jig for solving the problem that the jig cannot completely press each surface of two workpieces at the same time.

A welding jig for clamping a first workpiece and a second workpiece, the welding jig comprising:

a substrate on which both the first and second workpieces are placed;

a cover plate which can be buckled with the base plate;

the positioning mechanism is arranged on the substrate and used for positioning the second workpiece;

the lateral pressing mechanism comprises a first lateral pressing mechanism and a second lateral pressing mechanism which are connected with each other, the first lateral pressing mechanism is movably arranged on the substrate, the first lateral pressing mechanism moves along a first direction to press the first workpiece in the first direction, and meanwhile, the second lateral pressing mechanism is driven to move in a second direction to press the first workpiece in the second direction, and the first direction is perpendicular to the second direction; and

and the clamping mechanism is movably connected to the base plate so as to clamp the second workpiece.

Foretell welding jig, side pressure mechanism can compress tightly first work piece in equidirectional, and clamping mechanism can press from both sides tight second work piece to make each face of two work pieces compress tightly completely, difficult not hard up, structural design is reasonable.

In one embodiment, the first lateral pressing mechanism comprises a lateral pressing bar, a lateral pressing handle and a lateral pressing cam, the lateral pressing cam is rotatably connected with the lateral pressing bar, the lateral pressing handle is fixedly connected with the lateral pressing cam, and the lateral pressing cam is driven to rotate by operating the lateral pressing handle and simultaneously drives the lateral pressing bar to move along the first direction.

In one embodiment, the side pressure cam comprises a side pressure eccentric wheel and a side pressure wheel shaft which are connected with each other, the side pressure handle is fixedly connected with the side pressure wheel shaft, a groove is formed in the side pressure bar, the side pressure eccentric wheel is rotatably arranged in the groove, and the side pressure handle is operated to drive the side pressure eccentric wheel to rotate and drive the side pressure bar to move in a first direction.

In one embodiment, the first lateral pressing mechanism further comprises a lateral pressing buffer, and the lateral pressing buffer is convexly arranged on the lateral pressing bar and faces to the side close to the first workpiece.

In one embodiment, the lateral pressure buffer member comprises a lateral pressure spring, a lateral pressure guide post and a lateral pressure seat, the lateral pressure spring is abutted between the lateral pressure strip and the lateral pressure guide post, the lateral pressure guide post is arranged at the rear part of the lateral pressure seat in a penetrating way and is exposed outside the lateral pressure seat, and the lateral pressure guide post partially exposed outside the lateral pressure seat is elastically abutted with the side wall of the first workpiece.

In one embodiment, the second lateral pressing mechanism comprises a jacking assembly and a first pressing block, the first pressing block and the jacking assembly are respectively provided with a wedge-shaped part, the two wedge-shaped parts are abutted against each other, and the first pressing block is connected with the lateral pressure bar, so that the movement of the lateral pressure bar drives the first pressing block to move along a first direction and drives the jacking assembly to move along a second direction.

In one embodiment, the tightening assembly includes a second pressing block, a tightening block, a guide rod and a first elastic member, the wedge portion is disposed on the second pressing block, the second pressing block and the tightening block are disposed at an interval, the guide rod is disposed through the second pressing block and the tightening block, and the first elastic member is disposed on the guide rod and abuts against between the second pressing block and the tightening block.

In one embodiment, the guide rod is fastened to the tightening block, and the guide rod is slidably connected to the second pressing block, so that when the first pressing block pushes against the second pressing block, the second pressing block can slide in a second direction relative to the guide rod.

In one embodiment, the tightening assembly further includes a second elastic member, and the second elastic member is protruded from the tightening block and faces a side close to the first workpiece.

In one embodiment, the clamping mechanism comprises two clamping arms, a clamping cam and a clamping handle, the two clamping arms are arranged oppositely, the ends of the two clamping arms are rotatably connected through the clamping cam, the clamping handle is fixedly connected with the clamping cam, and the clamping cam can be driven to rotate by operating the clamping handle to drive the two clamping arms to open and close so as to clamp the second workpiece.

In one embodiment, the workpiece pressing device further comprises a pushing mechanism, the pushing mechanism comprises a pushing block and a mounting seat, the mounting seat is fixed to the substrate, and the pushing block is rotatably arranged on the mounting seat and used for pressing the second workpiece.

In one embodiment, the pushing block comprises a body and an end pressing portion, the body and the mounting seat are connected with each other in a rotating mode, the end pressing portion protrudes out of the body and extends along the second direction, and the end pressing portion is driven to rotate by rotating the body so that the end pressing portion is abutted to the side face of the second workpiece.

In one embodiment, the portable electronic device further comprises a base, wherein the base is detachably arranged on one side of the cover plate, and the base plate is detachably arranged on the side opposite to the base, so that the cover plate is arranged between the base and the base plate.

In one embodiment, the cover plate includes a cover body and a pressing member, the pressing member is partially exposed after penetrating through the cover body, and the partially exposed pressing member is elastically abutted to the first workpiece and the second workpiece.

Drawings

FIG. 1 is an assembled perspective view of a welding jig according to the present embodiment;

FIG. 2 is an exploded view of the welding fixture of FIG. 1;

FIG. 3 is a perspective view of the assembly of the substrate, the positioning mechanism, the clamping mechanism, the pushing mechanism and the side pressing mechanism in the welding fixture shown in FIG. 1;

FIG. 4 is an isometric view of a substrate and first and second workpieces in the welding fixture of FIG. 1;

FIG. 5 is a top view of the clamping mechanism of the welding fixture of FIG. 1 in combination with a second workpiece;

FIG. 6 is an isometric view of a push mechanism in the welding fixture of FIG. 1;

FIG. 7 is an isometric view of the assembly of the first side press mechanism of the welding fixture of FIG. 1;

FIG. 8 is an exploded view of the first side press mechanism of FIG. 7;

FIG. 9 is an isometric view of a second side press mechanism of the weld fixture of FIG. 1;

FIG. 10 is an exploded view of the second side pressure mechanism shown in FIG. 9;

FIG. 11 is an isometric view of a cover plate in the welding fixture of FIG. 1;

fig. 12 is an exploded view of the cover plate shown in fig. 11.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, a welding fixture 10 according to an embodiment includes a substrate 100, a positioning mechanism 200, a clamping mechanism 300, a pushing mechanism 400, a side pressing mechanism 500, and a cover plate 600, wherein a first workpiece 80 and a second workpiece 90 are initially fixed and then placed on the substrate 100, and the first workpiece 80 and the second workpiece 90 are pressed and fixed by the positioning mechanism 200, the clamping mechanism 300, the pushing mechanism 400, and the side pressing mechanism 500.

It should be noted that, in some embodiments, referring to fig. 4, the first workpieces 80 are block-shaped, the second workpieces 90 are strip-shaped, and each second workpiece 90 can be welded with a plurality of first workpieces 80, and correspondingly, as shown in fig. 3, a plurality of first placing locations 101 and a second placing location 102 for placing the second workpiece 90 are provided on the substrate 100, after the plurality of first workpieces 80 and the second workpiece 90 are preliminarily fixed by glue or other methods, the plurality of first workpieces 80 are respectively placed at the plurality of first placing locations 101 of the substrate 100, the second workpiece 90 is placed at the second placing location 102 of the substrate 100, and then the welding fixture 10 is used to further compress the first workpieces 80 and the second workpieces 90, so as to prevent the second workpieces 90 from being separated from the first workpieces 80 to affect the product performance. In other embodiments, the first and

second workpieces

80, 90 may also be ring-shaped, oval-shaped, or otherwise irregular. Here, the shapes of the first workpiece 80 and the second workpiece 90 are not limited.

Referring to fig. 3, the positioning mechanism 200 is disposed on the substrate 100 for positioning the second workpiece 90. Specifically, in some embodiments, referring to fig. 4, the positioning mechanism 200 includes a fixing portion 210 and an extending portion 220 vertically connected, the fixing portion 210 is fastened to the substrate 100 by a locking member such as a screw or a bolt, the second workpiece 90 includes a first side surface 910, a second side surface 920, a third side surface 930, a fourth side surface 940, a top surface 950 and a bottom surface (not shown in the drawings), the first side surface 910 is disposed opposite to the third side surface 930, the second side surface 920 is disposed opposite to the fourth side surface 940, the bottom surface of the second workpiece 90 abuts against the substrate 100, the first side surface 910 abuts against the fixing portion 210, and the second side surface 920 abuts against the extending portion 220.

In some embodiments, referring to fig. 4, the fixing portion 210 is a strip-shaped structure, the number of the extending portions 220 is two, the two extending portions 220 are respectively vertically disposed at two ends of the fixing portion 210, and the extending directions of the two extending portions 220 are opposite, so that the positioning mechanism 200 can conveniently position two second workpieces 90 at a time, and the two second workpieces 90 do not interfere with each other, thereby improving the processing efficiency.

In other embodiments, the number of the protruding portions 220 may also be one, and the positioning mechanism 200 is L-shaped, and the positioning mechanism 200 positions one second workpiece 90 at a time. Or, in other embodiments, the number of the extending portions 220 may be greater than two, and the plurality of extending portions 220 are arranged on the fixing portion 210 side by side at intervals, so that the positioning mechanism 200 can position the plurality of second workpieces 90 at a time, and the processing efficiency is further improved.

In some embodiments, the length of the fixation section 210 is not adjustable. In other embodiments, the fixing portion 210 may be telescopic, so that the length of the fixing portion 210 is adjustable, and the fixing portion is convenient to match with second workpieces 90 with different lengths, thereby expanding the application range of the positioning mechanism 200.

In some embodiments, the extension portion 220 and the fixing portion 210 are integrally formed, and have high structural strength, good integrity and low probability of damage. In other embodiments, the extension portion 220 and the fixing portion 210 may also be of a split structure, the extension portion 220 is rotatably disposed on the fixing portion 210, the angle of the extension portion 220 is adjustable to adapt to the second workpieces 90 of different shapes, the adjustment is more flexible, the application range is wide, and the extension portion 220 or the fixing portion 210 is convenient to replace when damaged, thereby facilitating the recycling of resources.

Referring to fig. 3, the clamping mechanism 300 is movably connected to the base plate 100 for clamping the second workpiece 90.

It should be noted that the clamping mechanism 300 is used for clamping both ends of the second workpiece 90, and may be slightly deformed during the clamping process, where the deformation may counteract the deformation generated during the welding process, and may be ignored here.

Specifically, referring to fig. 5, the clamping mechanism 300 includes a clamping arm 310, a clamping cam 320 and a clamping handle 330, wherein an end of the clamping arm 310 is rotatably connected to the substrate 100 through the clamping cam 320, the clamping handle 330 is fixedly connected to the clamping cam 320, and the clamping handle 330 is operated to drive the clamping cam 320 to rotate, so as to drive the clamping arm 310 to move to clamp the second workpiece 90.

In some embodiments, in order to facilitate clamping two second workpieces 90 at a time and improve the processing efficiency, the number of the clamping arms 310 is two, the two clamping arms 310 are disposed opposite to each other, the two clamping arms 310 are both provided with a receiving slot 310a, the substrate 100 is provided with a through hole (not shown), the clamping cam 320 is an eccentric cam, the clamping cam 320 is located in the receiving slot 310a so as to rotatably connect the clamping arms 310 and the substrate 100, the clamping handle 330 is fixedly connected with the clamping cam 320, and the clamping cam 320 is driven to rotate by operating the clamping handle 330, so as to drive the two clamping arms 310 to open and close to abut against the third side 930 of the two second workpieces 90, thereby clamping the two second workpieces 90. In other embodiments, the number of the clamping arms 310 can be one, and the clamping cam 320 is driven to rotate by operating the clamping handle 330, so that the clamping arms 310 are driven to rotate to abut against the third side 930 of one second workpiece 90, thereby pressing one second workpiece 90.

In some embodiments, referring to fig. 5, the clamping arm 310 includes a clamping portion 311 and a connecting portion 312 connected to each other, the receiving groove 310a is disposed on the connecting portion 312, and a middle portion of the clamping portion 311 is rotatably disposed on the substrate 100 through a first rotating shaft 313 to prevent the clamping arm 310 from tilting or shifting during the opening and closing process. To facilitate clamping and force application, the clamping portion 311 includes a vertical rod 315 and a horizontal rod 314, the vertical rod 315 extends along a first direction (i.e., an X direction shown in fig. 5), the horizontal rod 314 extends along a second direction (i.e., a Y direction shown in fig. 5) perpendicular to the first direction and is located at an end of the vertical rod 315, so that the clamping portion 311 is L-shaped, and the horizontal rod 314 abuts against a third side surface 930 of the second workpiece 90. In other embodiments, the clamp 311 may also include only the crossbar 314, with the crossbar 314 directly abutting the third side 930 of the second workpiece 90.

In some embodiments, the length of the clamp 311 is not adjustable. In other embodiments, the clamping portion 311 may also be in a telescopic structure, so that the length of the clamping portion 311 is adjustable, and the clamping portion can be matched with second workpieces 90 with different lengths, thereby expanding the application range of the clamping mechanism 300. For example, the clamping portion 311 includes a plurality of links that are connected to each other and are capable of telescoping relative to each other to accommodate length adjustment needs to match different lengths of the second workpiece 90.

Further, referring to fig. 6, the pushing mechanism 400 includes a pushing block 410 and a mounting seat 420, the mounting seat 420 is fixed to the substrate 100, and the pushing block 410 is rotatably disposed on the mounting seat 420 for pressing the second workpiece 90.

In some embodiments, referring to fig. 6, the pushing block 410 includes a body 411 and an end pressing portion 412 vertically connected, the body 411 and the mounting base 420 are rotatably connected through a second rotating shaft 413, the end pressing portion 412 protrudes from the body 411 and extends along the Y direction, and the end pressing portion 412 is driven to rotate by rotating the body 411, so that the end pressing portion 412 abuts against the fourth side surface 940 of the second workpiece 90, thereby pressing the second workpiece 90. In other embodiments, the body 411 and the mounting seat 420 can be rotatably connected by a hinge or a hinge.

Furthermore, in order to prevent the end pressing portion 412 from being pressed and damaged by the second workpiece 90 when abutting against the second workpiece 90, referring to fig. 6, the abutting mechanism 400 further includes an abutting buffer 414, a first end of the abutting buffer 414 is protruded from the main body 411 and extends along the Y direction, the main body 411 is rotated to drive the end pressing portion 412 to rotate, referring to fig. 3 and fig. 4, so that when the end pressing portion 412 abuts against the fourth side 940 of the second workpiece 90, the second end of the abutting buffer 414 can abut against the fourth side 940 of the second workpiece 90 to provide an elastic force to perform a buffering function. Specifically, the pushing buffer 414 is a spring or a leaf spring.

Referring to fig. 3, the side pressing mechanism 500 is movably disposed on the substrate 100 for pressing the first workpiece 80 in different directions.

Specifically, the side pressing mechanism 500 includes a first side pressing mechanism 510 and a second side pressing mechanism 520 connected to each other, the first side pressing mechanism 510 is movably disposed on the substrate 100, the first side pressing mechanism 510 moves along a first direction (i.e., an X direction shown in fig. 7) to press the first workpiece 80 in the first direction, and the second side pressing mechanism 520 is driven to move along a second direction (i.e., a Y direction shown in fig. 7) to press the first workpiece 80 in the second direction.

Referring to fig. 7, the first lateral pressing mechanism 510 includes a lateral pressing bar 511, a lateral pressing handle 512, and a lateral pressing cam 513, the lateral pressing cam 513 is rotatably connected to the lateral pressing bar 511, the lateral pressing handle 512 is fixedly connected to the lateral pressing cam 513, referring to fig. 4, the first workpiece 80 includes a first sidewall 810, a second sidewall 820, a third sidewall 830, a fourth sidewall 840, and a top wall 850, the first sidewall 810 is disposed opposite to the third sidewall 830, the second sidewall 820 is disposed opposite to the fourth sidewall 840, the bottom wall of the first workpiece 80 abuts against the substrate 100, the first sidewall 810 of the first workpiece 80 abuts against the first side surface 910 of the second workpiece 90, the lateral pressing cam 513 is rotated by operating the lateral pressing handle 512, and the lateral pressing bar 511 is driven to move in the X direction, so that the lateral pressing bar 511 abuts against the third sidewall 830 of the first workpiece 80.

In some embodiments, referring to fig. 8, the side pressure bar 511 has a groove 511a, the side pressure cam 513 includes a side pressure eccentric 513a and a side pressure axle 513b connected to each other, the side pressure handle 512 is fixedly connected to the side pressure axle, the side pressure eccentric is located in the groove 511a, and the side pressure eccentric is driven to rotate in the groove 511a by operating the side pressure handle 512, so as to drive the side pressure bar 511 to move in the X direction. In other embodiments, the lateral pressure cam 513 and the lateral pressure handle 512 may not be provided, and a moving mechanism may be provided, and the moving mechanism is connected to the lateral pressure bar 511 to move the lateral pressure bar 511 along the X direction.

Furthermore, in order to prevent the first workpiece 80 from being damaged due to excessive pressing force, the first lateral pressing mechanism 510 further includes a lateral pressing buffer 514, the lateral pressing buffer 514 is protruded from the lateral pressing bar 511 and faces the side close to the first workpiece 80, so as to prevent the lateral pressing bar 511 from directly pressing the first workpiece 80, and the lateral pressing buffer 514 can elastically deform under pressure to play a buffering role.

In some embodiments, the lateral pressure buffer 514 includes a lateral pressure spring 515, a lateral pressure guide pillar 516 and a lateral pressure seat 517, the lateral pressure guide pillar 516 is disposed through the lateral pressure seat 517 and partially exposed outside the lateral pressure seat 517, the lateral pressure strip 511 is provided with a connecting hole 511b, a first end of the lateral pressure spring 515 abuts against the connecting hole 511b, and a second end of the lateral pressure spring 515 abuts against a side of the lateral pressure guide pillar 516 close to the lateral pressure strip 511, so that when the lateral pressure strip 511 moves in the X direction, the lateral pressure buffer 514 is driven to move in the X direction, and the lateral pressure guide pillar 516 partially exposed outside the lateral pressure seat 517 elastically abuts against the third sidewall 830 of the first workpiece 80, thereby preventing the first workpiece 80 from being damaged by an excessive pushing force. In other embodiments, the side pressure buffer 514 may include only the side pressure spring 515, and the side pressure spring 515 is directly elastically abutted against the third sidewall 830 of the first workpiece 80.

In some embodiments, the side guide post 516 includes a cap 518 and a guide rod 519 connected to each other, the cap 518 has a radial dimension larger than that of the guide rod 519, the side press seat 517 is provided with a through hole 517a, the guide rod 519 is partially exposed after penetrating through the through hole 517a, and the cap 518 has a radial dimension larger than that of the through hole 517a and is clamped on the side press seat 517 to prevent the guide rod 519 from completely disengaging from the through hole 517 a. In other embodiments, the radial dimensions of the cap 518 and the guide rod 519 may be equal, and the side guide post 516 may be directly engaged with the through hole 517 a.

Referring to fig. 9 and 10, the second lateral pressing mechanism 520 includes a pressing member 521 and a first pressing block 522, the first pressing block 522 and the pressing member 521 are respectively provided with a wedge portion, the two wedge portions are abutted against each other, the first pressing block 522 is connected to the lateral pressing bar 511, the lateral pressing bar 511 moves along the X direction to drive the first pressing block 522 to move along the X direction, and simultaneously, the pressing member 521 is driven to move along the Y direction, so that the pressing member 521 is abutted against the third lateral wall 830 of the first workpiece 80.

Specifically, referring to fig. 10, the first pressing block 522 is provided with a first wedge 522a, the abutting assembly 521 is provided with a second wedge 521a, the first pressing block 522 is fastened to the side bar 511 by a screw or a bolt, and the inclined surfaces of the first wedge 522a and the second wedge 521a are abutted to each other, when the side bar 511 moves along the X direction to drive the first pressing block 522 to move along the X direction, because the inclined surfaces of the wedges are arranged, the first pressing block 522 pushes the abutting assembly 521 to drive the abutting assembly 521 to move along the Y direction.

In some embodiments, the tightening assembly 521 includes a second pressing block 523, a tightening block 524, a guide rod 525 and a first elastic member 526, the second wedge 521a is disposed on the second pressing block 523, the guide rod 525 penetrates through the second pressing block 523 and the tightening block 524 to enable the second pressing block 523 and the tightening block 524 to be disposed in parallel at intervals, and the first elastic member 526 is sleeved on the guide rod 525 and abuts between the second pressing block 523 and the tightening block 524. The guide rod 525 is fastened to the pushing block 524, and the guide rod 525 is slidably connected to the second press block 523, so that when the first press block 522 abuts against the second press block 523, the second press block 523 can slide in the Y direction relative to the guide rod 525, and meanwhile, the first elastic member 526 is in a compressed state, and then the pushing block 524 is pushed to move in the Y direction. In other embodiments, the second pressing block 523, the guide rod 525, and the first elastic member 526 may not be provided, the pushing block 524 directly abuts against the first pressing block 522, the wedge portion is provided on the pushing block 524, and the pushing block 524 moves along the Y direction by the movement of the first pressing block 522.

In some embodiments, the outer circumference of guide 525 is secured to the inner circumference of tightening block 524 by a threaded connection. In other embodiments, the guide rod 525 may have a protrusion on the outer circumference thereof and the tightening block 524 may have a recess on the inner circumference thereof, the protrusion being engaged with the recess to fasten the guide rod 525 to the tightening block 524.

Further, referring to fig. 10, in order to better abut against the first workpiece 80, the tightening assembly 521 further includes a protrusion 527, and the protrusion 527 is protruded from the tightening block 524 and faces to a side close to the first workpiece 80, so as to play a role of buffering, and prevent the first workpiece 80 from being damaged by excessive force when the tightening member abuts against the third sidewall 830 of the first workpiece 80.

Furthermore, referring to fig. 10, the tightening assembly 521 further includes a second elastic member 528, the second elastic member 528 is disposed in parallel to the protrusion 527 at an interval, and the second elastic member 528 is protruded on the tightening block 524 and faces to a side close to the first workpiece 80, so as to play a role of buffering, and prevent the first workpiece 80 from being damaged due to an excessive force when the tightening member abuts against the third sidewall 830 of the first workpiece 80.

Referring to fig. 3, the base plate 100 is provided with a contact block 110, the contact block 110 is disposed opposite to the abutting assembly 521, and the contact block 110 contacts with the fourth sidewall 840 of the first workpiece 80 to prevent the first workpiece 80 from sliding.

Referring to fig. 1, the cover plate 600 can be fastened to the substrate 100. Specifically, referring to fig. 2 and 3, the substrate 100 is provided with a hook 120 and a first positioning post 130, the cover plate 600 is provided with a locking hole 610 and a first positioning hole 620, the hook 120 can be locked in the locking hole 610, and the first positioning post 130 is inserted into the first positioning hole 620, so that the cover plate 600 is fastened with the substrate 100, thereby pressing the first workpiece 80 and the second workpiece 90.

Further, in order to flatten the top surfaces 950 of the first workpiece 80 and the second workpiece 90, referring to fig. 2, a plurality of pressing members 630 are disposed on the cover plate 600, so that the pressing members 630 elastically abut against the top surfaces 950 of the first workpiece 80 and the second workpiece 90. Specifically, referring to fig. 11 and 12, the cover plate 600 includes a cover 640 and a pressing member 630, the pressing member 630 includes a pressing block 631, a pressing spring 632, and a pressing cover 633, the cover 640 is provided with a plurality of cavities 641, a portion of the pressing block 631 after penetrating the cavities 641 is exposed outside the cavities 641, the pressing cover 633 is covered above the pressing block 631, the pressing spring 632 abuts between the pressing cover 633 and the pressing block 631, and a portion of the pressing block 631 exposed outside the cavities 641 abuts against top surfaces 950 of the first workpiece 80 and the second workpiece 90, so that the first workpiece 80 and the second workpiece 90 are effectively pressed and are not easily damaged by pressure.

Furthermore, in some embodiments, in order to facilitate the detachment and assembly of the cover plate 600, the cover plate 600 further includes a sliding block 650, a sliding cover 660, and a sliding spring 670, the sliding groove 642 is disposed on the cover body, the two sliding blocks 650 are inserted into the sliding groove 642, the sliding spring 670 is supported between the two sliding blocks 650, the bottom walls of the sliding blocks 650 and the sliding groove 642 are both provided with a clamping hole 610, the hook 120 on the substrate 100 can be clamped in the clamping hole 610, and by pushing the sliding block 650, the hook 120 can be released from the clamping hole 610, so that the cover plate 600 is separated from the substrate 100, and the cover plate 600 is convenient to detach.

Referring to fig. 1 and 2, the welding fixture 10 further includes a base 700, the base 700 is detachably disposed on one side of the cover plate 600, and the substrate 100 is detachably disposed on the side opposite to the base 700, such that the cover plate 600 is disposed between the base 700 and the substrate 100.

In some embodiments, the base 700 is provided with a second positioning column 710, the cover 600 is provided with a second positioning hole 680 matched with the second positioning column 710, and the second positioning column 710 is clamped in the second positioning hole 680. In other embodiments, the base 700 and the cover 600 may be snapped together.

Further, the base 700 is provided with a stop pillar 720, and when the base 700 is engaged with the cover plate 600, the stop pillar 720 is located at the periphery of the cover plate 600 to perform a preliminary limiting function, so that the substrate 100 and the cover plate 600 are conveniently placed on the base 700.

In some embodiments, referring to fig. 1, a plurality of welding holes 103 are formed in the base plate 100, and after the base plate 100, the cover plate 600 and the base 700 are assembled, a welding device (not shown) extends into the welding holes 103 to weld the first workpiece 80 and the second workpiece 90. In other embodiments, after the base plate 100, the cover plate 600 and the base 700 are assembled, the base 700 is turned over by 180 degrees to be located at the uppermost layer, the base 700 is provided with a plurality of processing holes 730, and the welding device can extend into the processing holes 730 to weld the first workpiece 80 and the second workpiece 90.

In the welding fixture 10, the side pressing mechanism 500 can press the first workpiece 80 in different directions, and the clamping mechanism 300 can clamp the second workpiece 90, so that the surfaces of the two workpieces are completely pressed at the same time and are not easy to loosen; and can weld respectively on work piece both sides, can satisfy different technology demands, structural design is reasonable, is favorable to improving machining efficiency.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a welding jig for first work piece of clamping and second work piece, its characterized in that, welding jig includes:

a substrate on which both the first and second workpieces are placed;

a cover plate which can be buckled with the base plate;

the positioning mechanism is arranged on the substrate and used for positioning the second workpiece; the positioning mechanism comprises a fixing part and an extending part which are vertically connected, the first side surface of the second workpiece is abutted with the fixing part, and the second side surface of the second workpiece is abutted with the extending part;

the lateral pressing mechanism comprises a first lateral pressing mechanism and a second lateral pressing mechanism which are connected with each other, the first lateral pressing mechanism is movably arranged on the substrate, the first lateral pressing mechanism moves along a first direction to press the first workpiece in the first direction, and meanwhile, the second lateral pressing mechanism is driven to move in a second direction to press the first workpiece in the second direction, and the first direction is perpendicular to the second direction; the first lateral pressing mechanism comprises a lateral pressing strip, a lateral pressing handle and a lateral pressing cam, the lateral pressing cam is rotationally connected with the lateral pressing strip, the lateral pressing handle is fixedly connected with the lateral pressing cam, the lateral pressing cam is driven to rotate by operating the lateral pressing handle, and meanwhile, the lateral pressing strip is driven to move along the first direction, so that the lateral pressing strip is abutted against the third side wall of the first workpiece; the second lateral pressing mechanism comprises a jacking assembly and a first pressing block, the first pressing block and the jacking assembly are respectively provided with a wedge-shaped part, the two wedge-shaped parts are mutually abutted, and the first pressing block is connected with the lateral pressing strip, so that the lateral pressing strip moves to drive the first pressing block to move along a first direction and drive the jacking assembly to move along a second direction; so that the jacking assembly abuts against the second side wall of the first workpiece; and

the abutting block is arranged on the base plate and is arranged opposite to the jacking assembly, and the abutting block is used for abutting against the fourth side wall of the first workpiece;

the clamping mechanism is movably connected to the base plate so as to clamp the second workpiece; the clamping mechanism comprises a clamping arm, a clamping cam and a clamping handle, the end part of the clamping arm is rotatably connected with the clamping cam, the clamping handle is fixedly connected with the clamping cam, and the clamping handle is operated to drive the clamping cam to rotate and drive the clamping arm to be opened and closed to be abutted against the third side face of the second workpiece;

the pushing mechanism comprises a pushing block and a mounting seat, the mounting seat is fixed on the substrate, and the pushing block is rotatably arranged on the mounting seat; the push block comprises a body and an end pressing part which are connected with each other, the body is rotatably connected with the mounting seat, the end pressing part protrudes out of the body and extends along the second direction, and the end pressing part is driven to rotate by rotating the body so as to enable the end pressing part to be abutted against the fourth side surface of the second workpiece to press the second workpiece.

2. The welding fixture of claim 1, wherein the side pressure cam comprises a side pressure eccentric and a side pressure shaft connected to each other, the side pressure handle is fixedly connected to the side pressure shaft, the side pressure bar is provided with a groove, the side pressure eccentric is rotatably disposed in the groove, and the side pressure handle is operated to drive the side pressure eccentric to rotate and drive the side pressure bar to move in a first direction.

3. The welding jig of claim 1, wherein the first lateral pressing mechanism further comprises a lateral pressing buffer member that is provided protruding from the lateral pressing bar and faces a side close to the first workpiece.

4. The welding jig of claim 3, wherein the lateral pressure buffering member comprises a lateral pressure spring, a lateral pressure guide post and a lateral pressure seat, the lateral pressure spring is abutted between the lateral pressure strip and the lateral pressure guide post, the lateral pressure guide post is arranged in the lateral pressure seat in a penetrating way, a part of the lateral pressure guide post is exposed out of the lateral pressure seat, and a part of the lateral pressure guide post exposed out of the lateral pressure seat is elastically abutted to the side wall of the first workpiece.

5. The welding fixture of claim 1, wherein the tightening assembly comprises a second pressing block, a tightening block, a guide rod and a first elastic member, the wedge-shaped portion is disposed on the second pressing block, the second pressing block and the tightening block are spaced apart from each other, the guide rod is disposed through the second pressing block and the tightening block, and the first elastic member is sleeved on the guide rod and abuts against between the second pressing block and the tightening block.

6. The welding fixture of claim 5, wherein the guide rod is fastened to the tightening block, and the guide rod is slidably coupled to the second pressing block, such that the second pressing block can slide in a second direction relative to the guide rod when the first pressing block pushes against the second pressing block.

7. The welding fixture of claim 5, wherein the tightening assembly further comprises a second elastic member protruding from the tightening block and facing a side close to the first workpiece.

8. The welding fixture of claim 1, wherein the number of said clamping arms is two, said two clamping arms being disposed opposite to each other.

9. The welding jig of claim 1, further comprising a base removably disposed on a side of the cover plate and the base plate removably disposed on a side opposite the base such that the cover plate is disposed between the base and the base plate.

10. The welding jig of claim 1, wherein the cover plate comprises a cover body and a pressing member, the pressing member is partially exposed after penetrating through the cover body, and the partially exposed pressing member is elastically abutted to the first workpiece and the second workpiece.

11. The welding fixture of claim 1, wherein the clamping arm comprises a clamping portion and a connecting portion connected to each other, a receiving groove is formed in the connecting portion, and a middle portion of the clamping portion is rotatably disposed on the substrate via a first rotating shaft; the clamping portion comprises a cross bar which is abutted against the third side face of the second workpiece.