CN220575130U

CN220575130U - Welding fixture capable of preventing thermal expansion and cold contraction

Info

Publication number: CN220575130U
Application number: CN202322083791.6U
Authority: CN
Inventors: 张吉; 于启生; 吴清洋
Original assignee: Rizhao Jida Vehicle Parts Co ltd
Current assignee: Rizhao Jida Vehicle Parts Co ltd
Priority date: 2023-08-04
Filing date: 2023-08-04
Publication date: 2024-03-12
Anticipated expiration: 2033-08-04

Abstract

The utility model relates to the technical field of welding clamps, and discloses a welding clamp capable of preventing thermal expansion and cold shrinkage.

Description

Welding fixture capable of preventing thermal expansion and cold contraction

Technical Field

The utility model relates to the technical field of welding clamps, in particular to a welding clamp capable of preventing thermal expansion and cold contraction.

Background

A welding jig is a device for fixing and supporting a welding workpiece. The welding device has the functions of positioning, fixing and supporting the workpiece in the welding process, and ensures the accuracy and stability of the welded joint. The welding fixture is typically comprised of a clamping mechanism, a support structure, and a positioning structure. The clamping mechanism is used for clamping the workpiece and ensuring that the workpiece does not move or deform in the welding process. The design of the clamping mechanism can be adjusted according to the shape and size of the workpiece to provide the proper clamping force and clamping pattern. The supporting structure is used for supporting the workpiece and preventing the workpiece from being deformed or sinking due to the weight of the workpiece. The supporting structure can be a fixed supporting point or a supporting frame with adjustable height. Through the reasonable design of the supporting structure, the balance and stability of the workpiece can be kept. The locating structure is used to determine the position and angle of the weld joint. The positioning device can be a fixed positioning block or a positioning pin, and also can be a positioning component with adjustable position and angle. The accuracy and stability of the positioning structure is very important for the quality and accuracy of the welded joint. The design and selection of the welding fixture need to consider the shape, size, weight, material, welding process requirements and other factors of the workpiece. The reasonable fixture design can improve welding efficiency and quality and reduce welding deformation and defect generation. In general, a welding jig is an indispensable auxiliary tool in a welding process, which can improve the accuracy and stability of welding and ensure the quality and reliability of welded joints.

When some auto-parts need to weld, because some auto-parts are inside cavity, use the apparatus to its fixed centre gripping when the welding, lead to the clamping-force too big easily and lead to the accessory to warp, cause the loss, simultaneously many anchor clamps can't angle regulation and location, make the welding construction inconvenient.

Disclosure of Invention

The utility model aims to provide a welding fixture capable of preventing thermal expansion and cold contraction, so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a welding jig that can prevent expend with heat and contract with cold, includes welding bench and grip box, the top surface fixedly connected with spliced pole of welding bench, the inside of grip box is provided with clamping part, the inside of spliced pole is provided with adjustment portion, the clamping part includes: the rotating shaft penetrates through the clamping box, the rotating shaft is rotationally connected with the clamping box, the rotating shaft is penetrated through by the rocker, the rocker is fixedly connected with the rotating shaft, one end of the rotating shaft in the clamping box is penetrated through and fixedly connected with a first bevel gear, the first bevel gear is meshed with a second bevel gear, the second bevel gear is penetrated through by a rotating column, the rotating column is fixedly connected with the second bevel gear, the rotating column penetrates through and is fixedly connected with a gear, one end of the rotating column, far away from the gear, is fixedly connected with a sliding groove rod, a sliding groove is formed in the surface of the sliding groove rod, a sliding rod is in transmission connection with a sliding rod in the sliding groove, the sliding rod penetrates through the clamping box, a moving groove is formed in the surface of the clamping box, one end of the sliding rod, far away from the sliding groove, is fixedly connected with a clamping plate, the rotating rocker drives the rotating shaft to rotate, and the first bevel gear is driven to rotate by the rotating shaft, and slides along the moving groove when the sliding groove, and drives the clamping plate to push a workpiece to the position of the square plate, so that workpieces to be welded are clamped; the locating plate, the fixed surface of locating plate and centre gripping case is connected, the left side fixedly connected with extension spring of locating plate, the one end fixedly connected with square board of locating plate is kept away from to extension spring, one side fixed surface that square board is close to the locating plate is connected with the push rod, the push rod runs through the locating plate, and push rod and locating plate sliding connection.

Preferably, the one end that the square board was kept away from to the push rod articulates there is the diagonal bar, the one end that the push rod was kept away from to the diagonal bar articulates there is the gag lever post, the fixed surface of centre gripping case is connected with the butt board, and when continuing to rotate the rocker, splint continue to promote the work piece and remove, when the push rod promotes the diagonal bar and contradicts the butt board, makes the diagonal bar promote the gag lever post to remove to the direction of gear to make gag lever post chucking gear.

Preferably, the adjusting part comprises a cylinder, the cylinder runs through the spliced pole, and the cylinder rotates with the spliced pole to be connected, cylinder and centre gripping case fixed connection, the fixed surface of cylinder is connected with the poking rod, the cylinder runs through and fixedly connected with snap ring, the fixed surface of snap ring is connected with the fixture block, the side of spliced pole is run through by the clamping rod, and clamping rod and spliced pole sliding connection, the left side fixedly connected with of clamping rod draws the piece, the clamping rod runs through and fixedly connected with stopper, fixedly connected with reset spring between the inner wall of stopper and spliced pole, the pulling draws the piece, makes the pulling piece draw the clamping rod no longer chucking fixture block, pokes the rod again, can rotate the cylinder, makes the cylinder drive the centre gripping case and rotates, and then can adjust the angle of centre gripping case, makes things convenient for constructor to weld.

Preferably, the sliding rod penetrates through the moving groove, and the sliding rod is attached to the inner side of the moving groove.

Preferably, the limit rod penetrates through the clamping box.

Preferably, the limit bar is aligned with the position of the gear.

Compared with the prior art, the welding fixture capable of preventing thermal expansion and cold contraction has the following beneficial effects:

1. this welding jig that can prevent expend with heat and contract with cold is when using, place the work piece that needs welded between splint and square, rotate the rocker, the rocker can drive the pivot and rotate, because the slide bar receives the spacing of travel groove, when the spout pole rotates, can make the slide bar slide along the travel groove, make the slide bar drive splint promote the work piece to the position promotion of square, thereby carry out the centre gripping to the work piece that needs to weld, when continuing to rotate the rocker, splint continue to promote the work piece and remove, thereby make the work piece promote the square and remove, make the square promote the push rod and remove to the direction of butt plate, make the diagonal bar promote the gag lever post to remove to the direction of gear, thereby make gag lever post chucking gear, the staff can know that the biggest clamping dynamics has been reached, stop the centre gripping, prevent the work piece by the too big and deformation of apparatus clamping dynamics, the setting of telescopic spring can make the work piece give the work piece expend with heat and contract with heat when welding simultaneously.

2. This welding jig that can prevent expend with heat and contract with cold is when using, and the pulling piece makes the pulling piece pulling draw the clamping lever no longer chucking fixture block, stirs the stirring rod again, can rotate the cylinder, makes the cylinder drive the centre gripping case and rotates, and then can adjust the angle of centre gripping case, makes things convenient for constructor to fix a position and angle regulation welds.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic elevational view of the present utility model;

fig. 3 is a schematic top view of the interior of the holding box of the present utility model.

In the figure: 1. a welding table; 2. a clamping part; 21. a rotating shaft; 22. a rocker; 23. bevel gears I; 24. bevel gears II; 25. rotating the column; 26. a gear; 27. a chute rod; 28. a slide bar; 29. a clamping plate; 210. a moving groove; 211. a positioning plate; 212. a telescopic spring; 213. a square plate; 214. a push rod; 215. a diagonal rod; 216. a limit rod; 217. a retaining plate; 3. an adjusting section; 31. a cylinder; 32. a toggle rod; 33. a clasp; 34. a clamping block; 35. a clamping rod; 36. pulling blocks; 37. a limiting block; 38. a return spring; 4. a connecting column; 5. and a clamping box.

Detailed Description

As shown in fig. 1-3, the present utility model provides a technical solution: the utility model provides a welding jig that can prevent expend with heat and contract with cold, includes welding table 1 and grip box 5, the top surface fixedly connected with spliced pole 4 of welding table 1, and the inside of grip box 5 is provided with clamping part 2, and the inside of spliced pole 4 is provided with adjustment part 3, and clamping part 2 includes: the rotating shaft 21 penetrates through the clamping box 5, the rotating shaft 21 is rotationally connected with the clamping box 5, the rotating shaft 21 is penetrated by the rocker 22, the rocker 22 is fixedly connected with the rotating shaft 21, one end of the rotating shaft 21 in the clamping box 5 penetrates through and is fixedly connected with the first bevel gear 23, the first bevel gear 23 is meshed with the second bevel gear 24, the second bevel gear 24 is penetrated by the rotating column 25, the rotating column 25 is fixedly connected with the second bevel gear 24, the rotating column 25 penetrates through and is fixedly connected with the gear 26, one end of the rotating column 25, which is far away from the gear 26, is fixedly connected with the sliding chute rod 27, the surface of the sliding chute rod 27 is provided with a sliding chute, a sliding rod 28 is in transmission connection with the sliding chute rod 28, the sliding rod 28 penetrates through the clamping box 5, the surface of the clamping box 5 is provided with a moving groove 210, one end of the sliding rod 28, which is far away from the sliding chute rod 27, a workpiece to be welded is placed between the clamping plate 29 and the square plate 213, the rotating rocker 22 drives the rotating shaft 21 to rotate, the rotating column 25 drives the first bevel gear 23 to rotate through the bevel gear 24, and the rotating column 25 to drive the rotating column 25 to rotate, so that the rotating column 25 drives the rotating column 25 to rotate, and the sliding chute rod 27 to move along the sliding chute rod 28 to move along the sliding groove 28 when the sliding groove 28 is required to be welded to the sliding groove 28; the locating plate 211, the fixed surface of locating plate 211 and centre gripping case 5 is connected, and the left side fixedly connected with extension spring 212 of locating plate 211, the one end fixedly connected with square board 213 that extension spring 212 kept away from locating plate 211, the side surface fixedly connected with push rod 214 that square board 213 is close to locating plate 211, push rod 214 runs through locating plate 211, and push rod 214 and locating plate 211 sliding connection. The one end that push rod 214 kept away from square plate 213 articulates there is inclined rod 215, the one end that inclined rod 215 kept away from push rod 214 articulates there is gag lever post 216, the fixed surface of centre gripping case 5 is connected with and keeps on board 217, when continuing to rotate rocker 22, splint 29 continues to promote the work piece and removes, thereby make work piece promote square plate 213 remove, make square plate 213 promote push rod 214 to the direction removal of keeping on board 217, when push rod 214 promotes inclined rod 215 and contradicts keeping on board 217, make inclined rod 215 take place certain degree rotation, make inclined rod 215 promote gag lever post 216 to the direction removal of gear 26, thereby make gag lever post 216 chucking gear 26, the staff can know that the maximum clamping dynamics has been reached, stop the centre gripping, prevent the work piece by the excessive deformation of apparatus clamping dynamics. The adjusting part 3 comprises a cylinder 31, the cylinder 31 penetrates through the connecting column 4, the cylinder 31 is rotationally connected with the connecting column 4, the cylinder 31 is fixedly connected with the clamping box 5, the surface fixedly connected with poking rod 32 of the cylinder 31 penetrates through the cylinder 31 and is fixedly connected with a clamping ring 33, the surface fixedly connected with clamping block 34 of the clamping ring 33, the side face of the connecting column 4 is penetrated through by a clamping rod 35, the clamping rod 35 is in sliding connection with the connecting column 4, a pull block 36 is fixedly connected with the left side of the clamping rod 35, the clamping rod 35 penetrates through and is fixedly connected with a limiting block 37, a reset spring 38 is fixedly connected between the limiting block 37 and the inner wall of the connecting column 4, the pull block 36 is pulled, the clamping rod 35 is not clamped with the clamping block 34, the poking rod 32 is poked again, the cylinder 31 can be rotated, the clamping box 5 is driven to rotate by the cylinder 31, the angle of the clamping box 5 can be adjusted, and welding is convenient for constructors. The slide bar 28 penetrates the moving groove 210, and the slide bar 28 is attached to the inner side of the moving groove 210. The stopper rod 216 penetrates the holding box 5. The stop 216 is aligned with the position of the gear 26.

Working principle: when the welding fixture capable of preventing thermal expansion and contraction is used, automobile parts needing welding processing are placed between the clamping plate 29 and the square plate 213, the rocking rod 22 is rotated, the rotating shaft 21 is driven to rotate by the rocking rod 22, the bevel gear 23 is driven to rotate by the rotating shaft 21, the bevel gear 23 drives the rotating post 25 to rotate through the bevel gear two 24, the rotating post 25 drives the gear 26 and the sliding groove rod 27 to rotate, the sliding rod 28 is limited by the moving groove 210, the sliding rod 28 slides along the moving groove 210 when the sliding groove rod 27 rotates, the sliding rod 28 drives the clamping plate 29 to push a workpiece to the position of the square plate 213, so that the workpiece needing welding is clamped, when the rocking rod 22 is continuously rotated, the clamping plate 29 continuously pushes the workpiece to move, the square plate 213 pushes the push rod 214 to move towards the direction of the abutting plate 217, when the push rod 214 pushes the inclined rod 215 to abut against the abutting plate 217, the inclined rod 215 rotates to a certain extent, the inclined rod 215 pushes the limiting rod 216 to move towards the direction of the gear 26, the limiting rod gear 26 is enabled, a worker can know that the clamping force is required to be maximum, and the clamping force is stopped, and the workpiece is prevented from being deformed due to the fact that the clamping force is excessively large by a telescopic spring 212, and the workpiece is clamped in the telescopic clamping space, and the workpiece is simultaneously contracted and expanded.

Pulling the pull block 36 makes the pull block 36 pull the clamping rod 35 to not clamp the clamping block 34 any more, and then stirs the poking rod 32, so that the cylinder 31 can be rotated, the cylinder 31 can drive the clamping box 5 to rotate, and then the angle of the clamping box 5 can be adjusted, so that the welding is convenient for constructors.

The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.

Claims

1. The utility model provides a welding jig that can prevent expend with heat and contract with cold, includes welding bench (1) and centre gripping case (5), the top surface fixedly connected with spliced pole (4) of welding bench (1), its characterized in that: the inside of centre gripping case (5) is provided with clamping part (2), the inside of spliced pole (4) is provided with adjustment portion (3), clamping part (2) include:

the rotary shaft (21), the rotary shaft (21) runs through the clamping box (5), and the rotary shaft (21) is rotationally connected with the clamping box (5), the rotary shaft (21) is run through by the rocker (22), and the rocker (22) is fixedly connected with the rotary shaft (21), one end of the rotary shaft (21) inside the clamping box (5) runs through and is fixedly connected with the bevel gear I (23), the bevel gear I (23) is meshed with the bevel gear II (24), the bevel gear II (24) is run through by the rotating column (25), the rotating column (25) is fixedly connected with the bevel gear II (24), the rotating column (25) runs through and is fixedly connected with the gear (26), one end of the rotating column (25) away from the gear (26) is fixedly connected with the sliding rod (27), the sliding groove (28) is arranged on the surface of the sliding rod (27), the sliding groove is internally connected with the sliding groove (28) arranged on the surface of the sliding rod (27), the sliding rod (28) runs through the clamping box (5), and the moving groove (210) is arranged on the surface of the clamping box (5), and one end of the sliding rod (28) is far from the sliding rod (27) and is fixedly connected with the clamping plate (29).

Locating plate (211), fixed surface of locating plate (211) and centre gripping case (5) is connected, the left side fixedly connected with extension spring (212) of locating plate (211), one end fixedly connected with square board (213) of locating plate (211) are kept away from to extension spring (212), one side fixed surface that square board (213) is close to locating plate (211) is connected with push rod (214), push rod (214) runs through locating plate (211), and push rod (214) and locating plate (211) sliding connection.

2. The welding jig of claim 1 wherein the welding jig is heat expandable and cold shrinkable: one end of the push rod (214) far away from the square plate (213) is hinged with an inclined rod (215), one end of the inclined rod (215) far away from the push rod (214) is hinged with a limiting rod (216), and the surface of the clamping box (5) is fixedly connected with a retaining plate (217).

3. The welding jig of claim 1 wherein the welding jig is heat expandable and cold shrinkable: the utility model provides an adjusting part (3) is including cylinder (31), cylinder (31) run through spliced pole (4), and cylinder (31) are connected with spliced pole (4) rotation, cylinder (31) and centre gripping case (5) fixedly connected with toggle rod (32), cylinder (31) run through and fixedly connected with snap ring (33), the fixed surface of snap ring (33) is connected with fixture block (34), the side of spliced pole (4) is run through by clamping rod (35), and clamping rod (35) and spliced pole (4) sliding connection, the left side fixedly connected with of clamping rod (35) draws piece (36), clamping rod (35) run through and fixedly connected with stopper (37), fixedly connected with reset spring (38) between the inner wall of stopper (37) and spliced pole (4).

4. The welding jig of claim 1 wherein the welding jig is heat expandable and cold shrinkable: the sliding rod (28) penetrates through the moving groove (210), and the sliding rod (28) is attached to the inner side of the moving groove (210).

5. The welding jig of claim 2 wherein the weld is resistant to thermal expansion and contraction, and wherein: the limiting rod (216) penetrates through the clamping box (5).

6. The welding jig of claim 2 wherein the weld is resistant to thermal expansion and contraction, and wherein: the stop bar (216) is aligned with the position of the gear (26).