CN212239607U

CN212239607U - Welding jig

Info

Publication number: CN212239607U
Application number: CN202020777811.3U
Authority: CN
Inventors: 姜雪林; 万发; 蒋玉斌
Original assignee: Bozhon Precision Industry Technology Co Ltd
Current assignee: Bozhon Precision Industry Technology Co Ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2020-12-29
Anticipated expiration: 2030-05-12

Abstract

The utility model discloses a welding jig belongs to machining technical field. The welding jig includes: the bearing plate is provided with a positioning hole, a first boss is arranged on the wall of the positioning hole, a first step is arranged on the first boss, and the first part is placed on the first step; the floating plate is movably arranged below the bearing plate; the floating plate is provided with a positioning column, the positioning column penetrates through the positioning hole, and the axes of the positioning column and the positioning hole are superposed; a second boss is arranged at the top of the positioning column, a second step is formed by the second boss and the outer wall of the positioning column, and a second part is placed on the second step; the cover plate is arranged on the bearing plate in a covering mode to drive the floating plate to move towards the direction far away from the bearing plate, and then the second part on the positioning column is driven to move to the position where the second part on the positioning column is located with the first part on the bearing plate. The utility model is positioned coaxially through the mutual coincidence of the axes of the positioning hole and the positioning column; the welding jig is simple in structure and convenient to operate.

Description

Welding jig

Technical Field

The utility model relates to a machinery processing technology field especially relates to a welding jig.

Background

In the machining field, often need use welding jig to treat welding parts to two and carry out positioning assembly, and then accomplish accurate welding at the welding station. When the parts to be welded are two annular parts, the two parts need to be coaxially positioned and assembled during welding, and then the contact part of the two parts is welded to complete the welding forming of the two annular parts. The coaxial assembly is adopted, namely, the axial centers of the two annular parts to be welded are always overlapped in the welding process, which is important for the final welding quality of the product.

In order to realize accurate positioning and assembly of the coaxial centers of the annular parts, the existing welding jig is complex in structural design, the positioning and assembly process is complicated, the positioning precision cannot be effectively guaranteed, the final welding forming quality is influenced, and the welding efficiency and the production efficiency are indirectly reduced.

Therefore, it is desirable to provide a welding jig to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a welding jig, simple structure, convenient operation can realize treating the positioning assembly of welding product with the axle center fast, has improved welding quality and welding efficiency.

In order to realize the purpose, the following technical scheme is provided:

a welding jig comprising:

the bearing plate is provided with a positioning hole, a first boss is arranged on the wall of the positioning hole, a first step is arranged on the first boss, and a first part is placed on the first step;

the floating plate is movably arranged below the bearing plate; the floating plate is provided with a positioning column, the positioning column penetrates through the positioning hole, and the axes of the positioning column and the positioning hole are superposed with each other; a second boss is arranged at the top of the positioning column, a second step is formed by the second boss and the outer wall of the positioning column, and a second part is placed on the second step;

the cover plate is arranged on the bearing plate in a covering mode and drives the floating plate to move towards the direction far away from the bearing plate, and then the second part on the positioning column is driven to move to be positioned and assembled with the first part on the bearing plate.

As a preferable mode of the welding jig, a first elastic member is disposed between the floating plate and the bearing plate, and the first elastic member is configured to make the floating plate have a tendency to move closer to the bearing plate;

the floating plate is provided with a limiting column, the limiting column penetrates through the bearing plate, a limiting boss is arranged at the top of the limiting column, and the first elastic piece is arranged between the limiting boss and the bearing plate.

As a preferable scheme of the welding jig, the cover plate is provided with a receiving hole, and the limiting column is received in the receiving hole.

As an optimal scheme of above-mentioned welding jig, still include the retaining member, the retaining member includes:

the mounting plate is arranged at the bottom of the bearing plate;

the locking block is abutted against the floating plate; the locking block is connected with the mounting plate through a second elastic piece, and the second elastic piece is configured to enable the locking block to always have the tendency of moving close to the floating plate along the horizontal direction.

As a preferable scheme of the welding jig, one end of the locking block, which is close to the floating plate, is provided with a first wedge-shaped surface, one end of the floating plate, which is close to the locking block, is provided with a clamping step, and when the floating plate moves along a direction in which the first wedge-shaped surface faces away from the bearing plate, the elastic force of the second elastic member is released, so that the locking block is clamped on the clamping step.

As a preferred scheme of the welding jig, a lock catch is arranged on the bearing plate, the lock catch comprises a rotating shaft arranged on the bearing plate and a lock catch body rotatably arranged on the rotating shaft, a torsion spring is arranged between the lock catch body and the rotating shaft, and the torsion spring is configured to enable the lock catch body to be always in a fastened state;

the front end of hasp body sets up the buckle, set up the holding tank on the apron, set up the draw-in groove on the cell wall of holding tank, when the apron lid was established, the hasp body hold in the holding tank, the buckle card is gone into in the draw-in groove, and then the straining the apron with the loading board.

As a preferable scheme of the welding jig, a pressing column is convexly arranged at the bottom of the cover plate and is used for abutting against the positioning column; a third elastic piece is arranged between the pressure column and the cover plate, so that the pressure column has a tendency of moving towards the positioning column.

As a preferable scheme of the welding jig, one of the bearing plate and the cover plate is provided with a guide post, and the other is provided with a guide hole, and the guide post can extend into the guide hole to axially guide the cover plate.

As a preferable scheme of the welding jig, the floating plate is provided with a welding through hole, and the welding through hole and the positioning hole are axially communicated with each other.

As a preferred scheme of the welding jig, the bearing plate comprises a carrier plate body and a cavity plate arranged on the carrier plate body, wherein the cavity plate is provided with the positioning holes; the acupuncture point plate is detachably connected with the carrier plate body.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a welding jig is through placing two annular parts to be welded respectively in the first boss of locating hole and the second boss of reference column, guarantees simultaneously that the axis of locating hole and reference column coincides each other, therefore when the floating plate kept away from relative to the loading board, the second part can be close to along same axial all the time relative to first part, has guaranteed the assembly of the two with the axle center location; this welding jig simple structure, convenient operation can realize treating the positioning assembly of welding product with the axle center fast, helps improving final welding forming quality, has also improved welding efficiency and production efficiency simultaneously.

Drawings

Fig. 1 is an overall schematic view of a welding jig according to an embodiment of the present invention;

fig. 2 is a schematic view of a welding jig according to an embodiment of the present invention, in which the cover plate is in a separated state;

fig. 3 is an exploded view of a welding jig according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a welding jig according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first component and a second component in an embodiment of the present invention;

fig. 6 is a schematic partial cross-sectional view of a welding jig according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a floating plate according to an embodiment of the present invention;

fig. 8 is a schematic structural view of an acupoint plate according to an embodiment of the present invention.

Reference numerals:

100-welding a jig; 200-a first part; 300-a second part;

201-a first positioning step; 301-a second positioning step;

10-a carrier plate; 20-floating plate; 30-a cover plate; 40-a retaining member; 50-a first elastic member; 60-locking;

11-a carrier body; 12-acupoint plate; 13-a bushing; 14-a guide post; 21-a positioning column; 22-welding through holes; 23-a limiting column; 24-clamping step; 31-a receiving hole; 32-accommodating grooves; 33-card slot; 34-pressing the column; 35-a guide hole; 41-mounting plate; 42-a locking block; 43-a second elastic member; 61-a latch body; 62-a rotating shaft; 63-torsion spring;

111-mounting grooves; 121-positioning holes; 211-a second boss; 231-a limit boss; 421-a first wedge-facet;

1111-abdication holes; 1211 — a first boss.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Fig. 1 is an overall schematic view of a welding jig according to an embodiment of the present invention; fig. 2 is a schematic view of a welding jig according to an embodiment of the present invention, in which the cover plate is in a separated state; fig. 3 is an exploded view of a welding jig according to an embodiment of the present invention; fig. 4 is a schematic cross-sectional view of a welding jig according to an embodiment of the present invention; fig. 5 is a schematic structural diagram of a first component and a second component in an embodiment of the present invention; fig. 6 is a schematic partial cross-sectional view of a welding jig according to an embodiment of the present invention; fig. 7 is a schematic structural view of a floating plate according to an embodiment of the present invention; fig. 8 is a schematic structural view of an acupoint plate according to an embodiment of the present invention.

As shown in fig. 1 to 4, fig. 7 and fig. 8, the present embodiment provides a welding jig 100, which is mainly used for coaxially positioning and assembling two parts to be welded, so as to achieve precise welding. Specifically, the welding jig 100 includes: the bearing plate 10 is provided with a positioning hole 121, and the wall of the positioning hole 121 is provided with a first boss 1211 for placing a first part 200; the floating plate 20 is movably arranged below the bearing plate 10; the floating plate 20 is provided with a positioning column 21, the positioning column 21 penetrates through the positioning hole 121, and the axes of the positioning column 21 and the positioning hole 121 are superposed; the top of the positioning column 21 is provided with a second boss 211 for placing an annular second part 300; the cover plate 30 covers the bearing plate 10, and drives the floating plate 20 to move in a direction away from the bearing plate 10, so as to drive the second part 300 on the positioning column 21 to move to complete positioning assembly with the first part 200 on the bearing plate 10.

Referring to fig. 5, in the present embodiment, the first part 200 and the second part 300 are both ring-shaped structures, preferably ring-shaped structures; when the second part 300 moves to contact with the first part 200, the positioning assembly of the two parts is completed, and then the contact surfaces of the two parts are welded, so that the welding connection of the two parts can be completed. Alternatively, a first positioning step 201 is provided on the inner circumferential surface of the first part 200, and a second positioning step 301 is provided on the outer circumferential surface of the second part 300, and when the second part 300 moves to the second positioning step 301 to be engaged with the first positioning step 201 of the first part 200, the positioning assembly is completed.

In the welding jig 100 provided by this embodiment, the two annular parts to be welded are respectively disposed on the first boss 1211 of the positioning hole 121 and the second boss 211 of the positioning column 21, and the axes of the positioning hole 121 and the positioning column 21 are ensured to coincide with each other, so that when the floating plate 20 is far away from the bearing plate 10, the second part 300 can always approach the first part 200 along the same axial direction, and coaxial positioning assembly of the two parts is ensured; this welding jig 100 simple structure, convenient operation can realize treating the positioning assembly of welding product with the axle center fast, helps improving final welding forming quality, can also improve welding efficiency and production efficiency.

Further, referring to fig. 1, 2 and 4, a first elastic member 50 is disposed between the floating plate 20 and the loading plate 10, the first elastic member 50 being configured to make the floating plate 20 have a tendency to move closer to the loading plate 10; referring to fig. 4, specifically, the floating plate 20 is provided with a limiting post 23, the limiting post 23 penetrates through the bearing plate 10 from bottom to top, the top of the limiting post 23 is provided with a limiting boss 231, and the first elastic element 50 is arranged between the limiting boss 231 and the bearing plate 10; in the initial state, the first elastic member 50 has no elastic force, the position-limiting column 23 and the positioning column 21 can both extend out of the bearing plate 10 to the maximum extent, and the floating plate 20 is also closest to the bearing plate 10; when the cover plate 30 is covered, the floating plate 20 moves in a direction away from the bearing plate 10 to drive the limiting post 23 to move downwards, and the first elastic member 50 is compressed to generate an elastic force, so that the floating plate 20 has a tendency of moving towards the bearing plate 10, thereby ensuring stable axial movement of the positioning post 21 on the floating plate 20 in the covering process. Optionally, the first elastic element 50 is a spring, and the spring is sleeved on the portion of the position-limiting pillar 23 between the position-limiting boss 231 and the bearing plate 10. The arrangement of the first elastic part 50 also enables the floating plate 20 to be quickly restored to the original position under the elastic action of the first elastic part 50 when the welding is completed to perform blanking, so as to drive the positioning column 21 to eject out the welded product. Further, referring to fig. 2 and 4, the cover plate 30 is provided with a receiving hole 31 for receiving the position-limiting post 23, and the size of the receiving hole 31 is larger than that of the position-limiting post 23, so that the covering process of the cover plate 30 does not interfere with the compression of the first elastic member 50. Further, referring to fig. 4, a bushing 13 is disposed on the bearing plate 10, and a limiting post 23 is sleeved in the bushing 13 to axially guide the movement of the floating plate 20.

Further, referring to fig. 1, 3 and 6, in order to ensure that the floating plate 20 and the loading plate 10 are relatively stable in the initial state and the floating plate 20 can be stabilized in a specific position after the two parts are positioned and assembled and cannot be restored to the original position under the action of the first elastic member 50, the welding jig 100 further comprises a locking member 40, the locking member 40 comprises a mounting plate 41 arranged at the bottom of the loading plate 10 and a locking block 42 arranged on the mounting plate 41, and the locking block 42 is connected with the mounting plate 41 through a second elastic member 43; the floating plate 20 abuts against the locking block 42, and the second elastic member 43 makes the locking block 42 have a tendency to move close to the floating plate 20 along the horizontal direction, so as to clamp the floating plate 20 and ensure the relative fixation of the floating plate 20 and the bearing plate 10. Further, referring to fig. 3 and 6, one end of the locking block 42 close to the floating plate 20 is provided with a first wedge-shaped surface 421, referring to fig. 6 and 7, one end of the floating plate 20 close to the locking block 42 is provided with a clamping step 24, when the cover plate 30 is pressed and the floating plate 20 moves in a direction away from the bearing plate 10, the floating plate 20 moves along the first wedge-shaped surface 421 of the locking block 42, and the elastic force of the second elastic member 43 is released, so that the locking block 42 is clamped on the clamping step 24 to limit the floating plate 20; further, it should be ensured that the abutting force between the second elastic member 43 and the floating plate 20 in the clamping state can ensure that the floating plate 20 does not move upwards under the action of the first elastic member 50. In specific implementation, the clamping position of the locking block 42 and the floating plate 20 is used as the lower limit position of the floating plate 20, and at this time, the second part 300 on the positioning column 21 is in place and is positioned and assembled with the first part 200. Further, as the clamping process of the locking block 42 involves the elastic force release of the second elastic part 43, when the locking block 42 moves towards the floating plate 20, the second part 300 on the positioning column 21 is already in place and can be assembled with the first part 200, and the design of the first wedge-shaped surface 421 can push the floating plate 20 to move downwards for a certain distance during clamping, so as to drive the positioning column 21 to move downwards continuously, so that the second part 300 is separated from the support of the second boss 211, at this time, the two parts which are assembled are supported by the first boss 12 in the positioning hole 121, that is, the positioning column 21 is prevented from being pressed to continuously drive the floating plate 20 to move downwards, and the interference of the supporting force of the positioning column 21 on the part to be welded on the pressing operation of the subsequent cover plate 30 on the part to be welded is also avoided.

Alternatively, with continued reference to fig. 3, the mounting plates 41 are provided in two, one on each side of the floating plate 20 in the first direction, to lock the floating plate 20 from two opposite directions; two locking blocks 42 are arranged on each mounting plate 41, and the two locking blocks 42 are arranged at intervals along the second direction so as to uniformly lock the floating plate 20. Alternatively, the floating plates 20 are arranged in two along the second direction, and each floating plate 20 is bidirectionally locked using a set of oppositely arranged locking blocks 42. In this embodiment, the first direction and the second direction are two mutually perpendicular directions in a horizontal plane. Preferably, the bearing plate 10, the floating plate 20 and the cover plate 30 are all rectangular structures, and the first direction and the second direction are the length direction and the width direction of the rectangular structures; the four locking blocks 42 are arranged in a rectangular shape.

Further, referring to fig. 1 to 3, a locker 60 for locking the cover plate 30 with the carrier plate 10 is provided on the carrier plate 10 to maintain the positional assembly of the first and

second parts

200 and 300 before the welding operation is completed. Specifically, referring to fig. 3, the latch 60 includes a rotating shaft 62 disposed on the carrier plate 10 and a latch body 61 rotatably disposed on the rotating shaft 62, a torsion spring 63 is disposed between the latch body 61 and the rotating shaft 62, and the torsion spring 63 is configured to keep the latch body 61 in a fastened state all the time. Further, the front end of hasp body 61 sets up the buckle, set up the second wedge between buckle and the hasp body 61, set up holding tank 32 on the apron 30, set up draw-in groove 33 on the cell wall of holding tank 32, when apron 30 lid was established, hasp body 61 holds in holding tank 32, the cell wall of holding tank 32 and the second wedge butt of hasp body 61 simultaneously, with jack-up hasp body 61, make torsional spring 63 produce elasticity, treat that the apron 30 moves in place, the release of torsional spring 63 elasticity, the buckle card is gone into in draw-in groove 33, hasp 60 must be with straining apron 30, it is firm fixed with the loading board 10 to realize apron 30. Further, the four lock catches 60 are respectively located at four corners of the loading plate 10, and the four accommodating grooves 32 are also arranged at four corners of the cover plate 30, so that the cover plate 30 can be conveniently machined and the lock catches 60 can be conveniently assembled.

Specifically, referring to fig. 3, the carrier plate 10 includes a carrier plate body 11 and an acupuncture point plate 12 disposed on the carrier plate body 11, wherein a plurality of positioning holes 121 are disposed on the acupuncture point plate 12, and a plurality of parts can be placed thereon at the same time. Further, referring to fig. 8, a plurality of first bosses 1211 are uniformly arranged on the sidewall of the positioning hole 121 in the circumferential direction, and first steps are arranged on the first bosses 1211 to stably place the first component 200. Further, referring to fig. 7, for the positioning column 21, the second boss 211 may be an annular boss disposed on the outer wall of the positioning column 21, and forms a second step with the outer wall of the positioning column 21, so as to be capable of placing the annular second component 300.

In order to ensure the first step to stably support the first part 200, the first part 200 is located below the top surface of the carrier plate 10 in the positioning hole 121; therefore, in order to ensure that the positioning column 21 can be pressed and the floating plate 20 can move when the cover plate 30 is covered on the bearing plate 10, referring to fig. 3 and 4, the bottom of the cover plate 30 is provided with the pressing column 34, the pressing column 34 is arranged to protrude out of the bottom of the cover plate 30, when the cover plate 30 is covered, the pressing column 34 is abutted against the positioning column 21 to drive the positioning column 21 and the floating plate 20 to move downwards together, after the floating plate 20 is moved to the lower limit position and locked, the pressing column 34 can be continuously abutted against the part to be welded under the driving of the cover plate 30 until the cover plate 30 is fastened with the bearing plate 10, at this time, the part to be welded can be pressed between the pressing column 34 and the first boss 1211, the second part 300 and the first part 200 are stably held at the positioning assembly position, and the final welding forming quality is ensured; further, the end face dimension of the pressing column 34 should be larger than the end face dimension of the positioning column 21 and the inner ring dimension of the second part 300, so that after the positioning column 21 is separated from the second part 300, the pressing column 34 can continue to abut against the second part 300, and the pressing is completed.

Preferably, the pressure post 34 is connected with the apron 30 that floats, sets up the third elastic component between pressure post 34 and apron 30 promptly, establishes the in-process at the lid, and the third elastic component is compressed, and pressure post 34 has the trend towards reference column 21 motion for pressure post 34 has certain buffering when with reference column 21 butt, guarantees that pressure evenly transmits softly, is favorable to protecting tool or product, avoids hard pressure to establish the damage that causes product or tool. Preferably, a silicone layer is disposed at one end of the pressing column 34 abutting against the positioning column 21 for directly contacting with the positioning column 21 or the product, so as to further protect the jig or the product.

Furthermore, the number of the positioning holes 121, the positioning columns 21 and the pressing columns 34 is one-to-one corresponding, one positioning column 21 is inserted into each positioning hole 121, and one positioning column 21 is correspondingly pressed on each pressing column 34; in the embodiment, referring to fig. 2, the number of the positioning holes 121, the positioning columns 21 and the pressing columns 34 is 16, and the positioning holes, the positioning columns 21 and the pressing columns are all distributed in a rectangular array. Optionally, referring to fig. 3, the acupuncture point plate 12 is detachably connected to the carrier body 11, so that the structure and size of the positioning hole 121 on the acupuncture point plate 12 can be adaptively changed according to different sizes and structures of products; optionally, the acupuncture point plate 12 is connected with the carrier plate body 11 through a bolt structure. Correspondingly, the positioning column 21 is detachably connected with the floating plate 20 to adapt to different structures of the second part 300, so that the positioning column can be conveniently matched with different positioning holes 121; furthermore, the pressure post 34 is also detachably connected to the upper cover plate 30, so that the pressure post 34 is adaptively changed in size to ensure sufficient transmission of the abutment pressure of the positioning post 21. The detachable design is carried out through carrying out acupuncture point board 12, reference column 21 and compression leg 34 for this welding jig 100 does not design to a certain product specialization, but has stronger commonality, through the size design who changes some spare parts, alright be fit for the welding of different products, can show the manufacturing cost who reduces welding jig.

Optionally, referring to fig. 2 and 3, two sets of limiting columns 23 are provided, two sets of limiting columns 23 are symmetrically distributed relative to the cave-position plate 12 along the first direction, each set of limiting columns includes four limiting columns 23 linearly arranged along the second direction, so that the overall stable synchronous movement of the floating plate 20 can be ensured while the welding jig 100 is ensured to complete positioning and assembling. Further, referring to fig. 2, one of the bearing plate 10 and the cover plate 30 is provided with a guide post 14, and the other is provided with a guide hole 35, when the cover plate 30 is covered, the guide post 14 extends into the guide hole 35 to axially guide the covering process of the cover plate 30, so as to avoid deviation. Optionally, in this embodiment, the bearing plate 10 is provided with the guiding post 14, and the cover plate 30 is provided with the guiding hole 35. Optionally, four guide posts 14 are provided and are distributed in a rectangular shape on the carrier plate 10.

After the two annular parts are positioned and assembled, the two annular parts are welded and connected only by heat input at the contact position of the two annular parts; further, in the present embodiment, the contact surfaces of the two annular components are obviously of an annular structure. In order to facilitate the welding operation of the two parts, referring to fig. 7, a welding through hole 22 is formed in the floating plate 20, and the welding through hole 22 and the positioning hole 121 are axially communicated with each other; since the first and

second components

200 and 300 after positioning and assembling are located on the first bosses 1211 uniformly distributed along the inner wall of the positioning hole 121, the annular contact surfaces of the two components can be exposed through the positioning hole 121 and the welding through hole 22 in sequence. Optionally, the welding through-hole 22 is a sector hole, and is provided with a plurality of, and a plurality of sector holes are in the circumference evenly distributed of reference column 21, neither influence the stable setting of reference column 21 on floating plate 20, can also realize the welding of part. Further, the sector-shaped hole is axially overlapped with the sector-shaped space between two adjacent first bosses 1211 on the positioning hole 121, so that the contact surfaces of the parts to be welded can be exposed except for the parts located on the first bosses 1211. In this embodiment, the first part 200 and the second part 300 are preferably welded by laser welding, because the laser for welding can be vertically absorbed into the welding fixture 100 through the welding hole, and directly reach the contact surface of the two annular members to be welded, so as to implement laser welding. Further, referring to fig. 3, a mounting groove 111 is formed in the carrier body 11, a yielding hole 1111 is formed in the bottom of the mounting groove 111, the yielding hole 1111 corresponds to the positioning hole 121 one by one, and the size of the yielding hole 1111 is significantly larger than that of the welding through hole 22, so that the welding laser is not interfered to reach the part to be welded, and the hole plate 12 can be located in the mounting groove 111 of the carrier body 11, thereby realizing accurate assembly of the hole plate 12 and the carrier body 11.

In specific implementation, the welding jig 100 includes the following steps:

1) placing the first part 200 on the first boss 1211 of the positioning hole 121, and placing the second part 300 on the second boss 211 of the positioning post 21;

2) the cover plate 30 is covered, the press column 34 is abutted against the positioning column 21, so that the positioning column 21 and the floating plate 20 are driven to move towards the direction far away from the bearing plate 10, and the first elastic piece 50 is compressed; the second part 300 enters the positioning hole 121 along with the positioning column 21 and is positioned and assembled with the first part 200;

3) the floating plate 20 moves downwards until the locking block 42 is clamped with the clamping step 24 of the floating plate 20, and the position of the floating plate 20 is fixed;

4) the cover plate 30 can move downwards continuously until the lock catch 60 on the bearing plate 10 locks the cover plate 30, and the first part 200 and the second part 300 which are positioned and assembled are pressed between the pressing column 34 and the first boss 1211;

5) the whole welding jig 100 is inverted and placed at a laser station for laser welding.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A welding jig, characterized by, includes:

the bearing plate (10) is provided with a positioning hole (121), a first boss (1211) is arranged on the hole wall of the positioning hole (121), a first step is arranged on the first boss (1211), and a first part (200) is placed on the first step;

the floating plate (20) is movably arranged below the bearing plate (10); the floating plate (20) is provided with a positioning column (21), the positioning column (21) penetrates through the positioning hole (121), and the axes of the positioning column (21) and the positioning hole (121) are overlapped; a second boss (211) is arranged at the top of the positioning column (21), a second step is formed by the second boss (211) and the outer wall of the positioning column (21), and a second part (300) is placed on the second step;

the cover plate (30) is covered on the bearing plate (10) and drives the floating plate (20) to move towards the direction far away from the bearing plate (10), and then the second part (300) on the positioning column (21) is driven to move to the position where the second part and the first part (200) on the bearing plate (10) are positioned and assembled.

2. The welding jig of claim 1, wherein a first elastic member (50) is provided between the floating plate (20) and the carrier plate (10), the first elastic member (50) being configured to give the floating plate (20) a tendency to move closer to the carrier plate (10);

the floating plate (20) is provided with a limiting column (23), the limiting column (23) penetrates through the bearing plate (10), the top of the limiting column (23) is provided with a limiting boss (231), and the first elastic piece (50) is arranged between the limiting boss (231) and the bearing plate (10).

3. The welding jig according to claim 2, characterized in that the cover plate (30) is provided with a receiving hole (31), and the limiting column (23) is received in the receiving hole (31).

4. The welding jig of claim 1, further comprising a retaining member (40), the retaining member (40) comprising:

the mounting plate (41) is arranged at the bottom of the bearing plate (10);

a locking block (42) which abuts against the floating plate (20); the locking block (42) and the mounting plate (41) are connected through a second elastic member (43), and the second elastic member (43) is configured to enable the locking block (42) to have a tendency to move close to the floating plate (20) in the horizontal direction all the time.

5. The welding jig of claim 4, characterized in that, a first wedge surface (421) is arranged at one end of the locking block (42) close to the floating plate (20), a clamping step (24) is arranged at one end of the floating plate (20) close to the locking block (42), and when the floating plate (20) moves along the first wedge surface (421) in a direction away from the bearing plate (10), the elastic force of the second elastic member (43) is released, so that the locking block (42) is clamped on the clamping step (24).

6. The welding jig of claim 1, wherein a lock catch (60) is disposed on the bearing plate (10), the lock catch (60) comprises a rotating shaft (62) disposed on the bearing plate (10) and a lock catch body (61) rotatably disposed on the rotating shaft (62), a torsion spring (63) is disposed between the lock catch body (61) and the rotating shaft (62), and the torsion spring (63) is configured to enable the lock catch body (61) to be always in a fastened state;

the front end of hasp body (61) sets up the buckle, set up holding tank (32) on apron (30), set up draw-in groove (33) on the cell wall of holding tank (32), when apron (30) lid was established, hasp body (61) hold in holding tank (32), the buckle card is gone into in draw-in groove (33), and then the straining apron (30) with loading board (10).

7. The welding jig according to claim 1, characterized in that a pressing column (34) is protruded from the bottom of the cover plate (30), and the pressing column (34) is used for abutting against the positioning column (21);

a third elastic piece is arranged between the pressure column (34) and the cover plate (30) so that the pressure column (34) has a tendency to move towards the positioning column (21).

8. A welding jig according to claim 1, characterized in that one of the carrier plate (10) and the cover plate (30) is provided with a guide post (14) and the other is provided with a guide hole (35), and the guide post (14) can extend into the guide hole (35) to axially guide the cover plate (30).

9. The welding jig according to claim 1, characterized in that the floating plate (20) is provided with a welding through hole (22), and the welding through hole (22) and the positioning hole (121) are axially communicated with each other.

10. The welding jig according to claim 1, wherein the carrier plate (10) comprises a carrier plate body (11) and a cavity plate (12) arranged on the carrier plate body (11), and the cavity plate (12) is provided with the positioning hole (121); the acupuncture point plate (12) is detachably connected with the carrier plate body (11).