CN216028725U

CN216028725U - Spot welding fixture

Info

Publication number: CN216028725U
Application number: CN202122635759.5U
Authority: CN
Inventors: 马成; 潘进; 魏浩; 曹宏玮; 孙力; 孙中华; 安治国
Original assignee: HBIS Co Ltd
Current assignee: HBIS Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-03-15
Anticipated expiration: 2031-10-29

Abstract

The utility model provides a spot welding fixture which comprises a base, a first positioning unit, a first adjusting unit, a second positioning unit, a second adjusting unit, a third adjusting unit and a Y-direction calibration part, wherein the first positioning unit is arranged on the base; the first positioning unit is fixed on the base and is provided with a channel which penetrates along the X direction; the first adjusting unit is connected to the base in a sliding mode along the X direction and provided with an adjusting end capable of moving back and forth along the Z direction; the second positioning unit is connected to the adjusting end and is provided with a second through groove which is communicated along the X direction; the second adjusting unit is connected with the first positioning unit and provided with first scales distributed along the X direction, and the second adjusting unit is provided with a positioning end capable of reciprocating along the Z direction; the two third adjusting units are respectively arranged in the channel and the second through groove and are provided with two clamping parts oppositely arranged along the Y direction; the Y-direction calibration part is provided with second scales distributed along the Y direction. The spot welding fixture provided by the utility model can avoid displacement in the welding process, and can ensure accurate adjustment of the overlapping width and the alignment of two workpieces.

Description

Spot welding fixture

Technical Field

The utility model belongs to the technical field of welding tool fixtures, and particularly relates to a spot welding fixture.

Background

Spot welding is a welding method in which a columnar electrode is used to form a welding spot between the contact surfaces of two overlapping workpieces during welding. During spot welding, the workpiece is pressed to be in close contact with the workpiece, then current is switched on, the contact position of the workpiece is melted under the action of resistance heat, and a welding spot is formed after cooling.

The existing fixture has poor positioning effect on workpieces, is easy to cause the problems of sliding and inaccurate positioning during welding, influences the quality of welded finished products, can also influence the standard property and the normative property of an experiment in the welding experiment process, and reduces the reliability of experiment data.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a spot welding clamp, aiming at improving the accuracy and reliability of workpiece positioning and ensuring the quality of a welded finished product.

In order to achieve the purpose, the utility model adopts the technical scheme that: provided is a spot welding jig including:

a base formed with a first space penetrating in the Z direction;

the first positioning unit is fixed on the base and provided with a channel which penetrates along the X direction, and at least one side edge of the first positioning unit is arranged corresponding to the first reserved space;

the first adjusting unit is connected to the base in a sliding mode along the X direction and provided with an adjusting end capable of moving back and forth along the Z direction;

the second positioning unit is connected to the adjusting end, is arranged opposite to the first positioning unit in the X direction, and is staggered with the first positioning unit in the Z direction, the second positioning unit is provided with a second through groove which is communicated along the X direction, the opening of the second through groove faces the first positioning unit in the Z direction, and a second clearance which is communicated along the Z direction and corresponds to the first clearance is formed in the second positioning unit;

the second adjusting unit is connected to the first positioning unit and extends towards the second positioning unit along the X direction, first scales distributed along the X direction are arranged on the second adjusting unit, a third clearance which penetrates along the Z direction and corresponds to the first clearance is further formed in the second adjusting unit, and the second adjusting unit is provided with a positioning end which moves back and forth along the Z direction;

the two third adjusting units are respectively arranged in the channel and the second through groove, each third adjusting unit is provided with two clamping parts which are oppositely arranged along the Y direction, and each clamping part has the freedom degree of moving along the Y direction; and

the Y-direction calibration part is provided with second scales distributed along the Y direction;

and the first, second and third reserved holes are matched to form a welding channel which is through along the Z direction.

In one possible implementation, the second adjusting unit includes:

the adjusting rod is arranged along the X direction, one end of the adjusting rod is connected to the first positioning unit, the first scale is arranged on the adjusting rod, and the adjusting rod is further provided with a first positioning hole which penetrates along the Z direction; and

and the first positioning pin is connected to the first positioning hole and can move along the Z axis, and the positioning end is formed at one end, facing the second positioning unit, of the first positioning pin in the Z direction.

In a possible implementation manner, the number of the adjusting rods is two, the two adjusting rods are distributed at intervals along the Y direction, and the third reserved space is formed between the two adjusting rods.

In one possible implementation, the first positioning unit includes:

the bracket is fixed on the base, and the second adjusting unit is connected to the bracket; and

the first positioning plate is connected to the bracket, a first through groove which is communicated along the X direction is formed in the first positioning plate, the opening direction of the first through groove deviates from the second adjusting unit in the Z direction, and the first through groove forms the channel;

the corresponding clamping part is positioned in the first through groove and is in sliding fit with the first positioning plate.

In a possible implementation manner, the bracket is provided with third scales distributed along the Z direction.

In a possible implementation manner, the second positioning unit includes a second positioning plate, the second positioning plate is connected to the adjusting end, the second positioning plate is provided with the second through groove, the corresponding clamping portion is in sliding fit with the second positioning plate, and the second positioning plate is provided with the second holding space.

In a possible implementation manner, a guide channel penetrating along the X direction is formed on the bracket, a guide rod extending along the X direction is formed on the second positioning plate, and the guide rod is slidably inserted into the guide channel.

In a possible implementation manner, the spot welding fixture further comprises a Z-direction positioning unit which is connected with the base in a sliding mode and has freedom degrees of moving along the Z direction and the X direction, the acting force of the Z-direction positioning unit on the workpiece in the Z direction is opposite to the acting force of the second positioning unit in the Z direction, and the second scale is arranged on the Z-direction positioning unit.

In a possible implementation manner, two opposite side walls of the first air trap distributed along the Y direction are respectively provided with a guide rail, the guide rails are arranged along the X direction, and the first adjusting unit includes:

the sliding seat is positioned on one side, away from the first positioning unit, of the second positioning unit in the Z direction, and is provided with a guide chute matched with the guide rail and an adjusting through hole which is communicated along the Z direction;

the lifting adjusting screw penetrates through the adjusting through hole;

the adjusting nut is matched with the lifting adjusting screw rod and is positioned on one side of the sliding seat, which is far away from the second positioning unit; and

and the connecting seat is fixedly connected to the second positioning unit and is in running fit with one end of the lifting adjusting screw rod, and the connecting seat forms the adjusting end.

In a possible implementation manner, the slide base is provided with a plurality of second positioning holes distributed along the X direction, and the base is in threaded connection with second positioning pins corresponding to the second positioning holes.

According to the scheme shown in the embodiment of the application, the channel of the first positioning unit provides Z-direction supporting force for the first welding workpiece, and the two clamping parts on the first positioning unit apply bidirectional clamping acting force to the first welding workpiece in the Y direction, so that Y-direction positioning of the first welding workpiece is realized; a Z-direction supporting force is provided for the second welding workpiece through a second through groove of the second positioning unit, and a bidirectional clamping acting force is applied to the second welding workpiece in the Y direction through two clamping parts on the second positioning unit, so that Y-direction positioning of the second welding workpiece is realized; applying Z-direction acting force to the lap joint position of the first welding workpiece and the second welding workpiece through the positioning end, and matching the Z-direction acting force with the Z-direction supporting force provided by the first positioning unit and the second positioning unit to realize Z-direction positioning; the two workpieces can be prevented from sliding relatively through the Z-direction clamping and the Y-direction clamping, and the X-direction positioning is further realized; through comparing with first scale, the width of regulation overlap joint portion that can be accurate, through comparing with the second scale, can be in the position of two work pieces of Y upwards accurate regulation, and then realize the centering. Compared with the prior art, the spot welding fixture can be used for realizing reliable positioning in X direction, Z direction and Y direction, avoiding displacement in the welding process, and meanwhile, ensuring accurate adjustment of the width of the lap joint and the centering performance of two workpieces in the process of installing the first welding workpiece and the second welding workpiece, further ensuring the accuracy and reliability of welding positioning and ensuring the quality of welded products.

Drawings

Fig. 1 is a schematic perspective view of a spot welding fixture according to an embodiment of the present invention;

FIG. 2 is a view taken along line A of FIG. 1;

fig. 3 is a schematic perspective view of a spot welding fixture according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of an assembly structure of a base and a first positioning unit according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a second positioning unit, a second adjusting unit, a third adjusting unit and a Z-direction positioning unit that are adopted in the embodiment of the present invention;

fig. 6 is a schematic view of an assembly structure of the base, the first positioning unit and the first adjusting unit adopted in the embodiment of the present invention.

Description of reference numerals:

100. a base; 110. first leaving empty; 120. a cover plate guide groove; 130. a guide rail; 140. a second positioning pin;

200. a first positioning unit; 210. a support; 220. a first positioning plate; 230. a first through groove; 240. a third scale; 250. a first guide groove; 260. a first screw hole;

300. a first adjusting unit; 310. a slide base; 320. a lifting adjusting screw; 330. adjusting the nut; 340. a connecting seat; 350. a second positioning hole; 360. a guide chute;

400. a second positioning unit; 410. a second through groove; 420. second leaving empty; 430. a second positioning plate; 440. a guide bar;

500. a second adjusting unit; 510. a first scale; 520. a third blank space is reserved; 530. adjusting a rod; 540. a first positioning hole;

600. a third adjusting unit; 610. a clamping portion; 611. a clamping block; 612. a slider;

700. a second scale;

800. a Z-direction positioning unit; 810. a cover plate; 820. a guide shoe.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It should be noted that, the terms "X direction", "Y direction" and "Z direction" in the present application are perpendicular to each other, and the "X axis", "Y axis" and "Z axis" are perpendicular to each other, and when the clamp of the present application is used, the relative positions of the "X direction", "Y direction" and "Z direction" (or the "X axis", "Y axis" and "Z axis") and the horizontal direction and the vertical direction are not limited, and are adjusted according to the actual welding requirements.

Referring to fig. 1 to 3 together, the spot welding jig according to the present invention will now be described. The spot welding fixture comprises a base 100, a first positioning unit 200, a first adjusting unit 300, a second positioning unit 400, a second adjusting unit 500, a third adjusting unit 600 and a Y-direction calibration part; the base 100 is formed with a first through-hole 110 along the Z-direction; the first positioning unit 200 is fixed on the base 100, the first positioning unit 200 has a through channel along the X direction, and at least one side edge of the first positioning unit 200 is arranged corresponding to the first clearance 110; the first adjusting unit 300 is slidably connected to the base 100 along the X direction, and the first adjusting unit 300 has an adjusting end reciprocating along the Z direction; the second positioning unit 400 is connected to the adjusting end, the second positioning unit 400 is arranged opposite to the first positioning unit 200 in the X direction, the second positioning unit 400 and the first positioning unit 200 are arranged in a staggered manner in the Z direction, the second positioning unit 400 is provided with a second through groove 410 which penetrates along the X direction, the opening of the second through groove 410 faces the first positioning unit 200 in the Z direction, and the second positioning unit 400 is provided with a second clearance 420 which penetrates along the Z direction and corresponds to the first clearance 110; the second adjusting unit 500 is connected to the first positioning unit 200 and extends towards the second positioning unit 400 along the X direction, the second adjusting unit 500 is provided with first scales 510 distributed along the X direction, the second adjusting unit 500 is further provided with a third clearance 520 penetrating along the Z direction and corresponding to the first clearance 110, and the second adjusting unit 500 is provided with a positioning end reciprocating along the Z direction; two third adjusting units 600 are arranged, the two third adjusting units 600 are respectively arranged in the channel and the second channel groove 410, the third adjusting unit 600 is provided with two clamping parts 610 which are oppositely arranged along the Y direction, and the clamping parts 610 have the freedom degree of movement along the Y direction; the Y-direction calibration portion has second scales 700 distributed in the Y-direction.

The first clearance 110, the second clearance 420 and the third clearance 520 are matched to form a welding channel which penetrates along the Z direction, and the welding channel is used for enabling two opposite electrodes of spot welding to effectively contact two opposite side surfaces of the overlapping part of a welding part.

According to the spot welding fixture provided by the embodiment, a Z-direction supporting force is provided for a first welding workpiece through a channel of the first positioning unit 200, and a bidirectional clamping acting force is applied to the first welding workpiece in a Y direction through the two clamping parts 610 on the first positioning unit 200, so that Y-direction positioning of the first welding workpiece is realized; a Z-direction supporting force is provided for the second welding workpiece through the second through groove 410 of the second positioning unit 400, and a bidirectional clamping acting force is applied to the second welding workpiece in the Y direction through the two clamping parts 610 on the second positioning unit 400, so that Y-direction positioning of the second welding workpiece is realized; applying a Z-direction acting force to the lapping position of the first welding workpiece and the second welding workpiece through the positioning end, wherein the Z-direction acting force is matched with the Z-direction supporting force provided by the first positioning unit 200 and the second positioning unit 400 to realize Z-direction positioning; the two workpieces can be prevented from sliding relatively through the Z-direction clamping and the Y-direction clamping, and the X-direction positioning is further realized; through comparing with first scale 510, the width of adjustment overlap joint portion that can be accurate, through comparing with second scale 700, can be in the position of two work pieces of Y upwards accurate regulation, and then realize the centering. Compared with the prior art, the spot welding fixture can be used for realizing reliable positioning in X direction, Z direction and Y direction, avoiding displacement in the welding process, and meanwhile, ensuring accurate adjustment of the width of the lap joint and the centering performance of two workpieces in the process of installing the first welding workpiece and the second welding workpiece, further ensuring the accuracy and reliability of welding positioning and ensuring the quality of welded products.

In specific implementation, because the second positioning unit 400 and the first positioning unit 200 are arranged in a staggered manner in the Z direction, one end of the second welding workpiece facing the first positioning unit 200 can abut against the end face of the first positioning unit 200, so that the position of the second welding workpiece is determined preferentially, and the first welding workpiece is moved by comparing the first scale 510 in the X direction, that is, the adjustment of the lap joint width can be completed.

As an embodiment of the second adjusting unit 500, referring to fig. 1 to 4 and 6, the second adjusting unit 500 includes an adjusting lever 530 and a first positioning pin; the adjusting rod 530 is arranged along the X direction, one end of the adjusting rod 530 is connected to the first positioning unit 200, the first scale 510 is arranged on the adjusting rod, and the adjusting rod 530 is further provided with a first positioning hole 540 which penetrates along the Z direction; the first positioning pin is connected to the first positioning hole 540, and an end of the first positioning pin facing the second positioning unit 400 in the Z direction forms a positioning end.

The first positioning pin can move along the Z direction and is used for applying a pressing action force to the first welding part and ensuring the reliability of Z-direction positioning. In addition, through the size and the interval of reasonable setting first locating hole 540, still be favorable to the quick number of judging the solder joint, further improve the installation effectiveness of welding.

In an implementation, referring to fig. 1 to 4 and 6, two adjusting rods 530 are provided, the two adjusting rods 530 are spaced apart from each other along the Y-direction, and a third clearance 520 is formed between the two adjusting rods 530. The two adjusting rods 530 are respectively positioned at two sides of the welding part, so that the stress of the welding part is uniform, and meanwhile, the space of the third clearance 520 is large, and the welding is convenient.

As an embodiment of the first positioning unit 200, referring to fig. 1 to 4 and 6, the first positioning unit 200 includes a support 210 and a first positioning plate 220; the bracket 210 is fixed to the base 100, and the second adjusting unit 500 is connected to the bracket 210; the first positioning plate 220 is connected to the bracket 210, a first through groove 230 penetrating along the X direction is formed in the first positioning plate 220, the opening direction of the first through groove 230 deviates from the second adjusting unit 500 in the Z direction, and the first through groove 230 forms a channel; the corresponding clamping portion 610 is located in the first through groove 230 and is in sliding fit with the first positioning plate 220. The first positioning unit 200 has a simple overall structure, can provide effective support for the first welding part, and is convenient for adjusting the position of the first welding part.

On the basis of the above embodiment, referring to fig. 1, 4 and 6, the bracket 210 is provided with third scales 240 distributed along the Z direction. The position adjustment of the second positioning unit 400 along the Z direction can refer to the third scale 240, and a suitable thickness space is reserved before the second welding part is placed, so that the subsequent Z-direction position adjustment of the second positioning unit 400 is facilitated.

As a specific embodiment of the second positioning unit 400, referring to fig. 1 to fig. 3 and fig. 5, the second positioning unit 400 includes a second positioning plate 430, the second positioning plate 430 is connected to the adjusting end, the second positioning plate 430 is provided with a second through slot 410, the corresponding clamping portion 610 is slidably matched with the second positioning plate 430, and the second positioning plate 430 is provided with a second clearance 420. The second positioning unit 400 has a simple structure, and can provide effective support for the second welding member, thereby facilitating the adjustment of the position of the second welding member.

Since the first adjusting unit 300 can slide along the X axis, the second positioning plate 430 connected to the first adjusting unit 300 can also slide along the X axis, and in order to avoid the second positioning plate 430 from being inclined in the X direction, referring to fig. 1 to 6, a guide channel penetrating along the X direction is formed on the bracket 210, a guide rod 440 extending along the X direction is formed on the second positioning plate 430, and the guide rod 440 is slidably inserted into the guide channel.

In some embodiments, referring to fig. 1 to 3 and 5, in order to prevent the tilting of the plate edges during welding, the spot welding fixture further includes a Z-direction positioning unit 800, the Z-direction positioning unit 800 is slidably connected to the base 100 and has a freedom of movement in the X direction, a force applied by the Z-direction positioning unit 800 to the workpiece in the Z direction is opposite to a force applied by the second positioning unit 400 in the Z direction, and the second scale 700 is provided on the Z-direction positioning unit 800.

In specific implementation, the Z-positioning unit 800 includes a cover plate 810 and a guide shoe 820 connected to the cover plate 810, and the base 100 is provided with a cover plate guide groove 120.

As a specific embodiment of the first adjusting unit 300, referring to fig. 1, 3 to 6, two opposite side walls of the first hollow 110 distributed along the Y direction are respectively provided with a guide rail 130, the guide rails 130 are arranged along the X direction, the first adjusting unit 300 includes a sliding base 310, a lifting adjusting screw 320, an adjusting nut 330 and a connecting base 340; the sliding base 310 is located on one side of the second positioning unit 400 departing from the first positioning unit 200 in the Z direction, and the sliding base 310 is provided with a guide chute 360 adapted to the guide rail 130 and an adjusting through hole penetrating along the Z direction; the lifting adjusting screw 320 penetrates through the adjusting through hole; the adjusting nut 330 is adapted to the lifting adjusting screw 320 and is located on a side of the sliding base 310 away from the second positioning unit 400; the connecting base 340 is fixed to the second positioning unit 400, and is rotatably engaged with one end of the lifting adjusting screw 320, and the connecting base 340 forms an adjusting end. Wherein, the lifting adjusting screw 320 is fixed on the connecting seat 340.

In this embodiment, since the position of the sliding seat 310 in the Z direction is unchanged, and the guiding rod 440 is in limit fit with the guiding channel, when the adjusting nut 330 is screwed, the lifting adjusting screw 320 can move up and down, and further the second positioning unit 400 can be driven to move along the Z direction. The structure is simple, the use is convenient, and the adjustment continuity is good.

In some embodiments, referring to fig. 1, 3 to 6, in order to more effectively fix the position of the slide seat 310 on the X axis, the slide seat 310 is formed with a plurality of second positioning holes 350 distributed along the X direction, and the base 100 is threadedly connected with second positioning pins 140 corresponding to the second positioning holes 350. The second positioning pin 140 can move back and forth along the Y direction, and can be inserted into or pulled out of the second positioning hole 350.

In some embodiments, referring to fig. 1, 2, 4-6, the clamping portion 610 includes a clamp block 611 and a slider 612. In the first positioning unit 200, the bottom of the first through groove 230 is provided with a first guide groove 250 in sliding fit with a corresponding slider 612, and the slider 612 is connected to one side of the clamping block 611 facing the bottom of the first through groove 230; a first screw hole 260 is formed in a side wall of the first through groove 230, a first adjusting screw rod penetrates through the first screw hole 260, and an extending end of the first adjusting screw rod is rotatably connected to the corresponding clamping block 611. The clamping portion 610 of the second positioning unit 400 is disposed in a similar manner as the first positioning unit 200, and is not described in detail herein.

In practical implementation, taking the first positioning unit 200 as an example, a screw hole is formed along the Y-direction on the sidewall of the first through groove 230, the adjusting bolt is inserted into the screw hole, the extending end of the adjusting bolt is rotatably connected to the corresponding clamping block 611, when the adjusting bolt is screwed, the adjusting bolt drives the clamping block 611 to move along the Y-axis,

in a specific using process, taking a case that a Z axis is defined as an up-down direction, an X axis is defined as a front-back direction, and a Y axis is defined as a left-right direction as an example, the overall height of the channel in the first positioning unit 200 is unchanged, and the height which can be set is slightly larger, so that the first welding pieces with different thicknesses can be inserted, and the first welding pieces and the second welding pieces can be well limited in the up-down direction by adjusting the height of the second positioning plate 430 and on the premise that the first positioning pin on the adjusting rod 530 and the cover plate 810 exert downward limiting acting force; the first welding piece and the second welding piece can be well limited in the left-right direction by adjusting the clamping part 610 on the first positioning unit 200 and the clamping part 610 on the second positioning unit 400; under the action of the friction force of each component on the first welding part and the second welding part, the first welding part and the second welding part can be well limited in the front-back direction; meanwhile, the adjustable Z-direction space and the adjustable Y-direction space can be well suitable for welding of welding parts with different sizes.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A spot welding jig characterized by comprising:

a base formed with a first space penetrating in the Z direction;

2. The spot welding jig according to claim 1, wherein the second adjusting unit comprises:

3. The spot welding fixture of claim 2, wherein there are two of said adjustment rods, two of said adjustment rods spaced apart in the Y-direction, and said third clearance is formed between said two adjustment rods.

4. The spot welding jig of claim 1, wherein the first positioning unit comprises:

5. The spot welding fixture of claim 4, wherein the support is provided with third graduations distributed along the Z-direction.

6. The spot welding jig according to claim 4, wherein the second positioning unit includes a second positioning plate, the second positioning plate is connected to the adjustment end, the second positioning plate defines the second through groove, the corresponding clamping portion is slidably engaged with the second positioning plate, and the second positioning plate defines the second clearance.

7. The spot welding jig according to claim 6, wherein the bracket is provided with a guide passage penetrating in the X direction, and the second positioning plate is formed with a guide rod extending in the X direction, the guide rod being slidably inserted into the guide passage.

8. The spot welding jig according to claim 1, further comprising a Z-direction positioning unit which is slidably connected to the base and has a degree of freedom to move in a Z direction and in an X direction, wherein a force applied to the workpiece in the Z direction by the Z-direction positioning unit is opposite to a force applied in the Z direction by the second positioning unit, and wherein the second scale is provided on the Z-direction positioning unit.

9. The spot welding jig according to claim 7, wherein opposite side walls of the first hollow portion distributed in the Y direction are respectively provided with guide rails arranged in the X direction, and the first adjusting unit comprises:

the lifting adjusting screw penetrates through the adjusting through hole;

the adjusting nut is matched with the lifting adjusting screw and is positioned on one side of the sliding seat, which is far away from the second positioning unit, and the adjusting nut rotates; and

10. The spot welding jig according to claim 9, wherein the slide base is provided with a plurality of second positioning holes distributed along the X direction, and the base is threadedly connected with second positioning pins corresponding to the second positioning holes.