CN220782747U - Welding jig - Google Patents

Abstract

The application discloses welding jig, it includes: the jig body is used for bearing a door hinge welding piece and a hinge shaft welding piece; the door hinge weldment is provided with a mounting hole matched with the door; the at least one positioning hole is arranged on the jig body and is used for being matched with the mounting hole; the positioning pin is used for being detachably connected with the positioning hole and the mounting hole; the setting bit is arranged on the jig body and is used for accommodating at least one hinge shaft welding piece; when the locating pins are respectively connected with the locating holes in a matched mode and the hinge shaft weldment is assembled in the placement position, the edges to be welded of the door hinge weldment correspond to the placement position and can abut against the hinge shaft weldment, so that the door hinge weldment and the hinge shaft weldment are positioned in the welding process, deviation between the door hinge weldment and the hinge shaft weldment is reduced or even avoided, and the purpose of improving welding precision is achieved.

Description

Welding jig

Technical Field

The application relates to the technical field of welding positioning devices, in particular to a welding jig.

Background

When the door is installed, firstly, a door hinge welding piece and a hinge shaft welding piece are required to be welded, and then the door hinge welding piece and the door are assembled; because the outward appearance of hinge pin weldment is cylindrical, and the surface of the edge of waiting to weld of door hinge weldment is the plane, consequently, the in-process is welded to the edge of waiting to weld of door hinge weldment and hinge pin weldment, and both contact surfaces are less, are unfavorable for carrying out the location to door hinge weldment and hinge pin weldment, and welded position and size cause the deviation easily, lead to the welding precision lower.

Accordingly, the prior art is still in need of improvement and development.

Disclosure of Invention

The technical problem that this application will solve lies in, to prior art's above-mentioned defect, provides a welding jig, aims at promoting welding precision.

The technical scheme adopted for solving the technical problems is as follows:

a welding jig, comprising:

the jig body is used for bearing a door hinge welding piece and a hinge shaft welding piece; the door hinge weldment is provided with a mounting hole matched with the door;

the at least one positioning hole is arranged on the jig body and is used for being matched with the mounting hole;

the positioning pin is used for being detachably connected with the positioning hole and the mounting hole;

the setting bit is arranged on the jig body and is used for accommodating at least one hinge shaft welding piece;

when the positioning pins are respectively connected with the positioning holes and the mounting holes in a matched mode, and the hinge shaft welding piece is assembled in the placement position, the side to be welded of the door hinge welding piece corresponds to the placement position and can abut against the hinge shaft welding piece.

The welding jig, wherein, when the hinge shaft weldment is assembled in the setting position, the circumference of the hinge shaft weldment contacts with the inner wall of the setting position.

The welding jig, wherein the placement position includes:

the positioning groove is arranged on the jig body and extends along the axial direction of the hinge shaft welding piece; when the hinge shaft welding piece is assembled in the positioning groove, the circumferential surface of the hinge shaft welding piece is contacted with the inner wall of the positioning groove and can slide back and forth along the positioning groove.

The welding jig, wherein, the jig body includes:

a first boss; the positioning groove is arranged on the top surface of the first boss and extends along the length direction of the first boss;

the second boss is positioned at one side of the first boss in the width direction and is connected with the first boss; the top surface of the second boss is parallel to the top surface of the first boss and higher than the top surface of the first boss; the locating hole is arranged on the top surface of the second boss.

The welding jig, wherein, the jig body still includes:

the two limiting blocks are symmetrically arranged at two ends of the first boss in the length direction;

the limiting block is attached to the first boss, and the top surface of the limiting block is higher than the top surface of the first boss so as to cover the opening of the positioning groove along the length direction.

The welding jig comprises a hinge shaft welding piece, a welding rod and a welding rod, wherein the hinge shaft welding piece comprises a small cam and a large cam which are coaxially arranged, and the diameter of the small cam is smaller than that of the large cam; the placement bit further comprises:

the accommodating cavity is arranged on the limiting block and is communicated with the positioning groove; the receiving cavity is matched with the small cam.

The welding jig, wherein, hold the chamber and follow the length direction of constant head tank runs through the stopper.

The welding jig is characterized in that a groove is further formed in one side, close to the positioning groove, of the limiting block, and the groove and the accommodating cavity are coaxially arranged; the groove is matched with the large cam.

The welding jig, wherein, be provided with the assembly groove on the periphery of big cam, the assembly groove is followed the axial extension of big cam is arranged, and with the door hinge weldment wait to weld the limit and cooperate.

The welding jig, wherein, the locating pin includes:

the pin shaft is matched with the positioning hole and the mounting hole;

the stop block is arranged at the end part of the pin shaft; when the pin shaft is positioned in the positioning hole, the stop block covers the positioning hole.

According to the positioning pin, the positioning hole and the mounting hole are matched, so that the door hinge weldment is positioned on the jig body; and the positioning position is used for positioning the hinge shaft weldment, so that the edge to be welded of the door hinge weldment can be just abutted against the hinge shaft weldment, the positioning of the door hinge weldment and the hinge shaft weldment in the welding process is realized, the deviation between the door hinge weldment and the hinge shaft weldment is reduced or even avoided, and the aim of improving the welding precision is fulfilled.

Drawings

FIG. 1 is a schematic view of a prior art door hinge weldment;

FIG. 2 is a schematic view of a prior art hinge shaft weld;

FIG. 3 is a schematic view of the assembly of the door hinge weldment, hinge shaft weldment and the welding jig;

fig. 4 is a schematic view of an exploded structure of the door hinge weldment, the hinge shaft weldment, and the welding jig in the present application.

Detailed Description

For the purpose of removing the objects, technical solutions and advantages of the present application, the following further details the present application with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

The inventors have found that prior to assembling the door, it is necessary to use a door hinge and to weld the door hinge weldment 100 (shown in fig. 1) with the hinge shaft weldment 200 (shown in fig. 2); the door hinge weldment 100 has a mounting hole 400 that is fitted to the door so as to be fitted to the door through the mounting hole 400.

The door hinge weldment 100 includes a first hinge plate 101, a second hinge plate 102, a third hinge plate 103, and a fourth hinge plate 104 which are sequentially connected and integrally constructed; the first hinge plate 101 is parallel to the third hinge plate 103, the first hinge plate 101 is perpendicular to the second hinge plate 102, the second hinge plate 102 is parallel to the fourth hinge plate 104, and the third hinge plate 103 is smaller than the first hinge plate 101 in height, so that the door hinge weldment 100 is in a bent step shape. The mounting hole 400 is formed in the fourth hinge plate 104, and an end surface of the first hinge plate 101 at an end remote from the second hinge plate 102 constitutes a side to be welded of the door hinge weldment 100. The hinge shaft weldment 200 includes a small cam 201 and a large cam 202 coaxially disposed, the small cam 201 having a diameter smaller than that of the large cam 202.

The surface of the edge to be welded of the door hinge weldment 100 is a plane, the surface of the hinge shaft weldment 200 is a circular surface, when the door hinge weldment 100 and the hinge shaft weldment 200 are welded, the door hinge weldment 100 and the hinge shaft weldment 200 are not easy to position, relative offset is easy to occur between the door hinge weldment 100 and the hinge shaft weldment 200, the welding position and the welding size cause deviation, and finally the welding precision is lower.

For solving the above technical problem, the present application provides a welding jig, as shown in fig. 3 and 4, the welding jig includes: the jig comprises a jig body 1, at least one positioning hole 2, a positioning pin 3 and a placement position 4; the jig body 1 is used for bearing a door hinge weldment 100 and a hinge shaft weldment 200; the door hinge weldment 100 has a mounting hole 400 to be mated with a door; the positioning hole 2 is arranged on the jig body 1 and is used for being matched with the mounting hole 400; the positioning pin 3 is detachably connected with the positioning hole 2 and the mounting hole 400.

In this application, the door hinge weldment 100 is placed on the jig body 1, so that the mounting hole 400 corresponds to the positioning hole 2, and the positioning pin 3 passes through the mounting hole 400 and then is inserted into the positioning hole 2, thereby positioning the door hinge weldment 100 on the jig body 1. Because the mounting hole 400 is the structure of the door hinge weldment 100, when the door hinge weldment 100 is positioned on the jig body 1 through the positioning pin 3, the structure of the door hinge weldment 100 does not need to be changed, so that the structure of the door hinge weldment 100 is prevented from being damaged.

The placement position 4 is arranged on the jig body 1 and is used for accommodating at least one hinge shaft welding piece 200; when the positioning pins 3 are respectively coupled with the positioning holes 2 and the mounting holes 400 in a mating manner, the edges 300 to be welded of the door hinge weldment 100 correspond to the mounting positions 4 so that the edges 300 to be welded of the door hinge weldment 100 can correspond to the hinge shaft weldment 200 fitted into the mounting positions 4.

Specifically, when the positioning pins 3 are respectively connected with the positioning holes 2 and the mounting holes 400 in a matching manner, and the hinge shaft weldment 200 is assembled in the positioning position 4 (i.e., the door hinge weldment 100 and the hinge shaft weldment 200 are in an assembling relationship with the jig body 1), the edge 300 to be welded of the door hinge weldment 100 corresponds to the positioning position 4 and can abut against the hinge shaft weldment 200.

The positioning pin 3, the positioning hole 2 and the mounting hole 400 are matched to realize the positioning of the door hinge weldment 100 on the jig body 1; and the positioning position 4 is used for positioning the hinge shaft weldment 200, so that the edge 300 to be welded of the door hinge weldment 100 can be just abutted against the hinge shaft weldment 200, positioning of the door hinge weldment 100 and the hinge shaft weldment 200 in the welding process is realized, deviation between the door hinge weldment 100 and the hinge shaft weldment 200 is reduced or even avoided, and the purpose of improving welding precision is achieved.

In this embodiment, when the hinge shaft weldment 200 is assembled in the positioning position 4, the circumferential surface of the hinge shaft weldment 200 contacts with the inner wall of the positioning position 4, so as to increase the contact area between the hinge shaft weldment 200 and the inner wall of the positioning position 4, thereby increasing the friction between the hinge shaft weldment 200 and the inner wall of the positioning position 4, improving the stability of positioning position 4 on positioning the hinge shaft weldment 200, further reducing the deviation generated between the door hinge weldment 100 and the hinge shaft weldment 200, and achieving the purpose of further improving the welding precision.

The placement position 4 comprises a positioning groove 41; the positioning groove 41 is arranged on the jig body 1; the positioning groove 41 is disposed along the axial extension of the hinge shaft solder 200 in the lengthwise direction. When the hinge shaft weldment 200 is assembled in the positioning slot 41, the circumferential surface of the hinge shaft weldment 200 is in contact with the inner wall of the positioning slot 41 and can reciprocally slide along the positioning slot 41, thereby adjusting the position of the hinge shaft weldment 200 in the positioning slot 41 so that the hinge shaft weldment 200 can be aligned with the edges 300 to be welded of the door hinge weldment 100.

In one embodiment of the present application, two positioning holes 2 are provided, and two hinge shaft weldments 200 may be accommodated in the positioning slot 41, so that a pair of door hinge weldments 100-hinge shaft weldments 200 may be welded by using the welding jig.

In one embodiment of the present utility model, the length of the positioning slot 41 is greater than the sum of the lengths of the two hinge shaft weldments 200, so that when the two hinge shaft weldments 200 are assembled in the positioning slot 41 at the same time, a gap can be reserved between the two hinge shaft weldments 200, thereby avoiding adverse effects caused by welding.

In an embodiment of the present application, as shown in fig. 4, the jig body 1 includes: a first boss 11 and a second boss 12; the positioning groove 41 is disposed on the top surface of the first boss 11, and extends along the length direction of the first boss 11; the second boss 12 is located at one side of the first boss 11 in the width direction, and is connected to the first boss 11. The top surface of the second boss 12 is parallel to the top surface of the first boss 11 and higher than the top surface of the first boss 11; the positioning hole 2 is disposed on the top surface of the second boss 12.

The top surfaces of the first boss 11 and the second boss 12 are both planar, and have a height difference, so that the combination of the first boss 11 and the second boss 12 may be more matched with the shape of the door hinge weldment 100, which is specifically expressed as: when the mounting hole 400 is correspondingly matched with the positioning hole 2, the fourth hinge plate of the door hinge weldment 100 can be contacted with the top surface of the second boss 12 to form contact between planes, so that the contact area between the door hinge weldment 100 and the jig body 1 is increased, the stability of positioning the door hinge weldment 100 by the welding jig is improved, and displacement of the door hinge weldment 100 relative to the welding jig is avoided.

In one implementation manner of this embodiment, as shown in fig. 4, the fixture body 1 further includes two limiting blocks 13; the two limiting blocks 13 are symmetrically arranged at two ends of the first boss 11 in the length direction. The limiting block 13 is attached to the first boss 11, and the top surface of the limiting block 13 is higher than the top surface of the first boss 11, so as to block the opening of the positioning slot 41 along the length direction, thereby blocking the positioning slot 41 from the two ends of the positioning slot 41 along the length direction, realizing the limiting of the hinge shaft weldment 200 assembled in the positioning slot 41, and avoiding the hinge shaft weldment 200 from sliding out of the positioning slot 41.

The placement position 4 further comprises a containing cavity 42, and the containing cavity 42 is arranged on the limiting block 13 and is communicated with the positioning groove 41; the receiving cavity 42 cooperates with the small cam 201.

Specifically, the accommodating cavity 42 is a cylindrical accommodating cavity 42 to match with the appearance of the small cam 201, so that the assembly of the accommodating cavity 42 and the small cam 201 is more stable. After the hinge shaft weldment 200 is placed in the positioning slot 41, the hinge shaft weldment 200 can be slid along the positioning slot 41 until the small cam 201 is inserted into the receiving cavity 42. The inner wall of the accommodating cavity 42 contacts with the circumferential surface of the small cam 201, so as to increase the contact area between the small cam 201 and the limiting block 13, improve the stability of limiting the hinge shaft welding piece 200 by the limiting block 13, and achieve the purpose of improving the positioning stability of the welding jig to the hinge shaft welding piece 200.

In one embodiment of the present application, the accommodating cavity 42 penetrates the stopper 13 along the length direction of the positioning slot 41.

Since the small cam 201 contacts with the inner wall of the accommodating chamber 42, a certain friction force is generated when the small cam 201 slides along the accommodating chamber 42, so that the small cam 201 is not easily removed from the accommodating chamber 42. In this embodiment, the accommodating cavity 42 penetrates the limiting block 13 along the length direction of the positioning slot 41, so that after the welding is completed, the hinge shaft weldment 200 can be pushed from the side of the accommodating cavity 42 away from the positioning slot 41, so that the hinge shaft weldment 200 is separated from the accommodating cavity 42, and the hinge shaft weldment 200 is discharged from the positioning slot 41.

In one embodiment of the present application, a groove 5 is further disposed on the side, close to the positioning groove 41, of the limiting block 13, and the groove 5 and the accommodating cavity 42 are coaxially disposed; the groove 5 is engaged with the large cam 202, and when the large cam 202 is located in the groove 5, the large cam 202 is in contact with the inner wall of the groove 5.

In this embodiment, when the hinge shaft weldment 200 is assembled, the small cam 201 is inserted into the accommodating cavity 42, and meanwhile, part of the large cam 202 can be accommodated in the groove 5, so that the contact area between the hinge shaft weldment 200 and the welding jig is further increased, and the stability of the welding jig in positioning the hinge shaft weldment 200 is improved.

It should be noted that, when the door hinge weldment 100 is assembled on the jig body 1 through the cooperation of the positioning hole 2, the mounting hole 400 and the positioning pin 3, the hinge shaft weldment 200 is assembled in the positioning slot 41, the small cam 201 is located in the accommodating cavity 42, and the large cam 202 is partially located in the groove 5 and supports the bottom wall of the groove 5, the edge 300 to be welded of the door hinge weldment 100 just contacts with the hinge shaft weldment 200 correspondingly (as shown in fig. 3), so that a welding operation can be performed.

In one embodiment of the present application, the circumferential surface of the large cam 202 is provided with an assembling groove 10; the assembly groove 10 is disposed along the axial extension of the large cam 202 and cooperates with the edge 300 to be welded of the door hinge weldment 100. When the door hinge weldment 100 and the hinge shaft weldment 200 are assembled on the welding jig, the edge 300 to be welded of the door hinge weldment 100 is just positioned in the assembly slot 10. The assembly slot 10 is configured to increase a contact area between the to-be-welded edge 300 of the door hinge weldment 100 and the hinge shaft weldment 200, and convert a contact between a plane and a circular surface in the prior art to a contact between a plane and a plane, so as to further avoid a relative offset between the door hinge weldment 100 and the hinge shaft weldment 200 during welding, and improve welding accuracy.

It should be noted that the structure of the door hinge weldment in the present application is the same as the structure of the door hinge weldment in the prior art; the structure of the hinge shaft weldment in this application has the difference with the structure of the hinge shaft weldment among the prior art, and the difference lies in: the hinge shaft weldment is provided with the assembly slot 10 in this application.

In one embodiment of the present application, the positioning pin 3 includes: a pin 31 and a stopper 32; the pin shaft 31 is matched with the positioning hole 2 and the mounting hole 400; the stop block 32 is arranged at the end part of the pin shaft 31; when the pin shaft 31 is positioned in the positioning hole 2, the stop block 32 covers the positioning hole 2.

Specifically, the width of the stopper 32 is greater than the diameters of the positioning hole 2 and the mounting hole 400, thereby restraining the door hinge weldment 100 between the stopper 32 and the second boss 12.

In summary, the present application provides a welding jig, where the positioning pin, the positioning hole and the mounting hole are matched to realize the positioning of the door hinge weldment on the jig body; and the positioning position is used for positioning the hinge shaft weldment, so that the edge to be welded of the door hinge weldment can be just abutted against the hinge shaft weldment, the positioning of the door hinge weldment and the hinge shaft weldment in the welding process is realized, the deviation between the door hinge weldment and the hinge shaft weldment is reduced or even avoided, and the aim of improving the welding precision is fulfilled.

It is to be understood that the application of the present application is not limited to the examples described above, but that modifications and variations can be made by a person skilled in the art from the above description, all of which modifications and variations are intended to fall within the scope of the claims appended hereto.

Claims (10)

1. The utility model provides a welding jig which characterized in that, it includes:

the jig body is used for bearing a door hinge welding piece and a hinge shaft welding piece; the door hinge weldment is provided with a mounting hole matched with the door;

the at least one positioning hole is arranged on the jig body and is used for being matched with the mounting hole;

the positioning pin is used for being detachably connected with the positioning hole and the mounting hole;

the setting bit is arranged on the jig body and is used for accommodating at least one hinge shaft welding piece;

when the positioning pins are respectively connected with the positioning holes and the mounting holes in a matched mode, and the hinge shaft welding piece is assembled in the placement position, the side to be welded of the door hinge welding piece corresponds to the placement position and can abut against the hinge shaft welding piece.

2. The welding jig of claim 1, wherein a circumferential surface of the hinge shaft weldment contacts an inner wall of the setting bit when the hinge shaft weldment is assembled in the setting bit.

3. The welding jig of claim 1, wherein the placement locations comprise:

the positioning groove is arranged on the jig body and extends along the axial direction of the hinge shaft welding piece; when the hinge shaft welding piece is assembled in the positioning groove, the circumferential surface of the hinge shaft welding piece is contacted with the inner wall of the positioning groove and can slide back and forth along the positioning groove.

4. The welding jig of claim 3, wherein the jig body comprises:

a first boss; the positioning groove is arranged on the top surface of the first boss and extends along the length direction of the first boss;

the second boss is positioned at one side of the first boss in the width direction and is connected with the first boss; the top surface of the second boss is parallel to the top surface of the first boss and higher than the top surface of the first boss; the locating hole is arranged on the top surface of the second boss.

5. The welding jig of claim 4, wherein the jig body further comprises:

the two limiting blocks are symmetrically arranged at two ends of the first boss in the length direction;

the limiting block is attached to the first boss, and the top surface of the limiting block is higher than the top surface of the first boss so as to cover the opening of the positioning groove along the length direction.

6. The welding jig of claim 5, wherein the hinge shaft weldment comprises a small cam and a large cam coaxially disposed, the small cam having a diameter smaller than a diameter of the large cam; the placement bit further comprises:

the accommodating cavity is arranged on the limiting block and is communicated with the positioning groove; the receiving cavity is matched with the small cam.

7. The welding jig of claim 6, wherein the receiving cavity extends through the stop block along a length of the positioning slot.

8. The welding jig according to claim 6, wherein a groove is further formed in one side, close to the positioning groove, of the limiting block, and the groove and the accommodating cavity are coaxially arranged; the groove is matched with the large cam.

9. The welding jig according to claim 6, wherein an assembly groove is provided on a circumferential surface of the large cam, the assembly groove being arranged to extend in an axial direction of the large cam and being fitted with a side to be welded of the door hinge weldment.

10. The welding jig of claim 1, wherein the locating pin comprises:

the pin shaft is matched with the positioning hole and the mounting hole;

the stop block is arranged at the end part of the pin shaft; when the pin shaft is positioned in the positioning hole, the stop block covers the positioning hole.