阅读说明：本技术 一种用于车辆制造的夹持装置 (Clamping device for vehicle manufacturing ) 是由 吴丽丽 于 2021-11-01 设计创作，主要内容包括：本申请提供了一种用于车辆制造的夹持装置,包括两个第一滑轨,本申请通过支撑调节机构和夹紧定位机构能够对需要焊接的工件进行夹紧,且通过设置的多个支撑调节机构使得气体火焰机床对一个支撑调节机构上的工件进行加工时,工作人员可以将其他支撑调节机构上加工完成的工件取下并放入未加工的工件,从而提高焊接效率,当该焊接夹具被更换下来之后,将该焊接夹具竖起,并将辅助机构中的辅助部与第一滑轨垂直,转动支撑调节机构和夹紧定位机构使支撑调节机构与第一滑轨垂直,并使夹紧定位机构与定位孔相连,使得该夹具能够形成置物架结构,此时该焊接夹具上可以放置一些工具。(The application provides a clamping device for vehicle manufacturing, which comprises two first sliding rails, can clamp a workpiece to be welded through a supporting and adjusting mechanism and a clamping and positioning mechanism, and the gas flame machine tool can process the workpiece on one supporting and adjusting mechanism through the plurality of supporting and adjusting mechanisms, the working personnel can take down the processed workpieces on other supporting and adjusting mechanisms and place the workpieces into unprocessed workpieces, thereby improving the welding efficiency, erecting the welding jig after the welding jig is replaced, the auxiliary part of the auxiliary mechanism is vertical to the first slide rail, the support adjusting mechanism and the clamping and positioning mechanism are rotated to lead the support adjusting mechanism to be vertical to the first slide rail, and the clamping and positioning mechanism is connected with the positioning hole, so that the clamp can form a shelf structure, and tools can be placed on the welding clamp at the moment.)

1. A clamping device for vehicle manufacturing, comprising:

two first sliding rails (1);

the positioning holes (2) are respectively formed in the two first sliding rails (1);

the supporting and adjusting mechanisms (3) are arranged between the two first sliding rails (1), and each supporting and adjusting mechanism (3) is provided with two clamping and positioning mechanisms (4) for clamping a workpiece and two limiting and supporting mechanisms (5) for supporting the workpiece in an auxiliary manner;

an auxiliary mechanism (6), wherein the auxiliary mechanism (6) is arranged between the two first sliding rails (1);

the supporting and adjusting mechanism (3) comprises a supporting part which is a rotating structure and is used for supporting the clamping and positioning mechanism (4) and placing tools;

the supporting part comprises a supporting plate (301), two sides of the supporting plate (301) are fixedly connected with first connecting shafts (309), the outer surfaces of the two first connecting shafts (309) are rotatably connected with sliding seats (308), and the inner walls of the two sliding seats (308) are respectively in sliding connection with the outer surfaces of the two first sliding rails (1);

the support part is provided with an adjusting part, and the adjusting part is used for adjusting the distance between two clamping and positioning mechanisms (4) on the support adjusting mechanism (3) so as to clamp the workpiece by the two clamping and positioning mechanisms (4) and connect the clamping and positioning mechanisms (4) with the positioning holes (2);

the clamping and positioning mechanism (4) comprises a connecting part and a positioning part, and the connecting part is arranged on the adjusting part and is used for connecting the positioning part and the adjusting part;

the positioning part is used for clamping a workpiece and is connected with the positioning hole (2) to fix the position of the rotating supporting part;

the connecting part comprises a connecting plate (401), a notch (403) and a slot (402) are formed in the end part of the connecting plate (401), and a second connecting shaft (404) is connected in the slot (402);

the positioning part comprises a positioning column (406) which is in penetrating connection with the slot (402), and a second inner groove (407) is formed in the positioning column (406);

the connecting rod (405) is connected to the second inner groove (407) in a sliding mode, the end portion of the connecting rod (405) extends into the inserting groove (402) and is fixedly connected with the outer surface of the second connecting shaft (404), a first spring (408) located in the second inner groove (407) is arranged on the outer surface of the connecting rod (405), and two ends of the first spring (408) are fixedly connected with the connecting rod (45) and the second inner groove (407) respectively.

2. The clamping device for vehicle manufacturing according to claim 1, wherein the adjusting portion comprises a first inner groove (302) and two first sliding grooves (303) respectively located at two sides of the first inner groove (302), the first inner groove (302) and the first sliding grooves (303) are both arranged on the supporting plate (301), the first inner groove (302) is located at the middle of the supporting plate (301), a bidirectional screw rod (304) is rotatably connected between the first inner groove (302) and the two first sliding grooves (302) through a bearing, and two transmission blocks (305) respectively located in the two first sliding grooves (303) are in threaded connection with the outer surface of the bidirectional screw rod (304).

3. The clamping device for vehicle manufacturing according to claim 2, wherein a bevel gear set (306) located in the first inner groove (302) is fixedly connected to an outer surface of the bidirectional screw rod (304), the bevel gear set (306) is composed of two bevel gears which are respectively fixedly installed on the bidirectional screw rod (304) and the adjusting rod (307) and are meshed with each other, the adjusting rod (307) perpendicular to the bidirectional screw rod (304) is fixedly connected to the bevel gear set (306), one end of the adjusting rod (307) far away from the bevel gear set (306) penetrates through the support plate (301) and extends to the outer portion of one side of the support plate (301), and the outer surface of the adjusting rod (307) is rotatably connected with the inner wall of the support plate (301) through a bearing.

4. The clamping device for vehicle manufacturing as claimed in claim 3, wherein the limiting support mechanism comprises a limiting portion, the limiting portion is disposed on the support portion, and the limiting portion is of an angle adjustment type structure and is used for supporting a workpiece during fixing and protecting the edge of the support portion.

5. The clamping device for vehicle manufacturing according to claim 4, wherein a locking portion is arranged on the limiting portion, and the locking portion is used for locking the limiting portion after angle adjustment.

6. The clamping device for vehicle manufacturing according to claim 5, wherein the limiting portion comprises a second sliding groove (501) which is formed on the supporting plate (301) and located between the two first sliding grooves (303), a sliding rod (502) is fixedly mounted in the second sliding groove (501), a sliding block (503) is slidably connected to the outer surface of the sliding rod (502), and a third inner groove (504) is formed in the sliding block (503).

7. A clamping device for vehicle manufacturing according to claim 6, characterized in that a first T-shaped bar (505) is slidably connected in the third inner groove (504), the top end of the first T-shaped bar (505) is rotatably connected with a square bar (506) through a bearing, the top end of the square bar (506) passes through the top wall of the third inner groove (504) and is fixedly connected with a connecting seat (508) which is contacted with the top of the sliding block (503).

8. A clamping device for vehicle manufacturing according to claim 7, characterized in that the outer surface of the first T-shaped bar (505) is provided with a second spring (507), and the two ends of the second spring (507) are fixedly connected with the first T-shaped bar (505) and the third inner groove (504), respectively.

9. Clamping device for vehicle manufacturing according to claim 8, characterized in that the auxiliary means comprise an auxiliary part and a fixed part, the auxiliary part being arranged between the two first sliding rails (1) for extending the movement trajectory of the support adjustment means (3) and connecting the two first sliding rails (1) together.

10. The clamping device for vehicle manufacturing according to claim 9, wherein the auxiliary portion comprises two second slide rails (601), the two second slide rails (601) are respectively contacted with the end portions of the two first slide rails (1), the bottom portions of the two second slide rails (601) are respectively provided with a groove (602), a connecting column (603) is fixedly connected in the two grooves (602), a fourth inner groove (604) is respectively formed in the two first slide rails (1) close to one end of the second slide rail (601), a second T-shaped rod (605) is slidably connected in the fourth inner groove (604), one end of the second T-shaped rod (605) close to the second slide rail (601) passes through the fourth inner groove (604) and extends into the groove (602) and is rotatably connected with the outer surface of the connecting column (603) through a bearing, a fourth spring (606) is fixedly connected to one end of the second T-shaped rod (605) far from the connecting column (603), the end of the fourth spring (606) is fixedly connected with the fourth inner groove (604).

Technical Field

The invention relates to the field of welding, in particular to a clamping device for vehicle manufacturing.

Background

In the manufacturing process of vehicles, some structural components need to be welded in the production process, and a gas flame welding machine is a welding device commonly used in the production process of engine components.

When welding automobile structural components, the most need be fixed with anchor clamps, because automobile structural components are numerous and the shape is different for need change the anchor clamps of different grade type when welding the engine parts of different shapes, and the anchor clamps under being changed often can be idle, can not obtain effectual utilization.

Disclosure of Invention

The invention aims to solve the following problems: the replaced clamp is idle and cannot be effectively utilized.

In order to achieve the above object, the present invention provides the following technical solutions to improve the above problems.

A clamping device for vehicle manufacturing, comprising:

the method comprises the following steps:

two first slide rails;

the positioning holes are respectively formed in the two first sliding rails;

the supporting and adjusting mechanisms are arranged between the two first sliding rails, and each supporting and adjusting mechanism is provided with two clamping and positioning mechanisms for clamping a workpiece and two limiting and supporting mechanisms for supporting the workpiece in an auxiliary manner;

the auxiliary mechanism is arranged between the two first sliding rails;

the supporting and adjusting mechanism comprises a supporting part which is a rotating structure and is used for supporting the clamping and positioning mechanism and the placing tool;

the supporting part comprises a supporting plate, two sides of the supporting plate are fixedly connected with first connecting shafts, the outer surfaces of the two first connecting shafts are rotatably connected with sliding seats, and the inner walls of the two sliding seats are respectively connected with the outer surfaces of the two first sliding rails in a sliding manner;

the adjusting part is arranged on the supporting part and used for adjusting the distance between the two clamping and positioning mechanisms on the supporting and adjusting mechanism so as to clamp the workpiece by the two clamping and positioning mechanisms and connect the clamping and positioning mechanisms with the positioning holes;

the clamping and positioning mechanism comprises a connecting part and a positioning part, and the connecting part is arranged on the adjusting part and is used for connecting the positioning part and the adjusting part;

the positioning part is used for clamping a workpiece and connecting the workpiece with the positioning hole to fix the position of the rotating supporting part;

the connecting part comprises a connecting plate, a notch and a slot are formed in the end part of the connecting plate, and a second connecting shaft is connected in the slot;

the positioning part comprises a positioning column which is in inserting connection with the slot, and a second inner groove is formed in the positioning column;

the connecting rod is connected in the second inner groove in a sliding mode, the end portion of the connecting rod extends into the slot and is fixedly connected with the outer surface of the second connecting shaft, a first spring located in the second inner groove is arranged on the outer surface of the connecting rod, and two ends of the first spring are fixedly connected with the connecting rod and the second inner groove respectively.

As the preferred technical scheme of this application, regulating part includes first inside groove and two first spouts that are located first inside groove both sides respectively, and first inside groove and first spout are all seted up in the backup pad, and just first inside groove is located the backup pad middle part, rotate through the bearing between first inside groove and two first spouts and are connected with two-way lead screw, and the surface threaded connection of two-way lead screw has two transmission blocks that are located two first spouts respectively.

As the preferred technical scheme of this application, the outer fixed surface of two-way lead screw is connected with the bevel gear group that is located first inside groove, and the bevel gear group comprises two bevel gears that respectively fixed mounting just intermeshing on two-way lead screw and regulation pole, and fixedly connected with adjusts the pole with two-way lead screw vertically on the bevel gear group, and the one end of keeping away from bevel gear group of regulation pole passes the backup pad and extends to the outside of backup pad one side, and the surface of adjusting the pole passes through the bearing and is connected with the inner wall rotation of backup pad.

As the preferred technical scheme of this application, spacing supporting mechanism includes spacing portion, spacing portion sets up on the supporting part, spacing portion is angle modulation formula structure for support and the protection of supporting part edge when the work piece is fixed.

As the preferable technical scheme of this application, be provided with locking part in the spacing portion, locking part is used for the locking after spacing portion angle modulation.

As the preferred technical scheme of this application, spacing portion is including seting up the second spout in the backup pad and between two first spouts, fixed mounting has the slide bar in the second spout, the surface sliding connection of slide bar has the slider, set up the third inside groove in the slider.

As the preferred technical scheme of this application, sliding connection has first T shape pole in the third inside groove, the top of first T shape pole is rotated through the bearing and is connected with the square bar, the roof and the fixedly connected with of the top of third inside groove and the connecting seat of slider top contact are passed on the top of square bar.

As the preferable technical scheme of the application, the outer surface of the first T-shaped rod is provided with a second spring, and two ends of the second spring are fixedly connected with the first T-shaped rod and the third inner groove respectively.

As the preferable technical scheme of this application, the complementary unit includes auxiliary portion and fixed part, the auxiliary portion sets up between two first slide rails for the extension supports adjustment mechanism's removal orbit and links together two first slide rails.

As the preferred technical scheme of this application, the auxiliary part includes two second slide rails, two the second slide rail contacts with the tip of two first slide rails respectively, two the bottom of second slide rail is all seted up flutedly, two equal fixedly connected with spliced pole in the recess, two the fourth inside groove has all been seted up to the inside that first slide rail is close to second slide rail one end, sliding connection has the T shape pole of second in the fourth inside groove, the one end that the T shape pole is close to the second slide rail passes the fourth inside groove and extends to in the recess and the surface rotation that passes through bearing and spliced pole is connected, the one end fixedly connected with fourth spring of spliced pole is kept away from to the T shape pole of second, the tip and the fourth inside groove fixed connection of fourth spring.

Compared with the prior art, the invention has the beneficial effects that:

1. in order to solve the problem that the replaced clamp is often idle and can not be effectively utilized in the prior art, the welding clamp is designed, the welding clamp can clamp workpieces to be welded through a supporting and adjusting mechanism and a clamping and positioning mechanism, and a gas flame machine tool can process the workpieces on one supporting and adjusting mechanism through a plurality of supporting and adjusting mechanisms, a worker can take down the processed workpieces on the other supporting and adjusting mechanisms and place the workpieces into the unprocessed workpieces, so that the welding efficiency is improved, after the welding clamp is replaced, the welding clamp is erected, an auxiliary part in the auxiliary mechanism is perpendicular to a first slide rail, the supporting and adjusting mechanism and the clamping and positioning mechanism are rotated to enable the supporting and adjusting mechanism to be perpendicular to the first slide rail, and the clamping and positioning mechanism is connected with a positioning hole, so that the clamp can form a shelf structure, at the moment, tools can be placed on the welding fixture;

2. in order to clamp and fix a workpiece, the clamping and positioning mechanisms are designed, when the workpiece is welded, the two clamping and positioning mechanisms are driven to be close to or away from each other through the adjusting part in the supporting and adjusting mechanism, when the two clamping and positioning mechanisms are away from each other, the two clamping and positioning mechanisms can be separated from the workpiece, and when the two clamping and positioning mechanisms are close to each other, the two clamping and positioning mechanisms can clamp and fix the workpiece;

3. in order to avoid the rotation of the supporting and adjusting mechanism, the clamping and positioning mechanism is designed, when the clamping and positioning mechanism is used as a commodity shelf, the positioning part in the clamping and positioning mechanism is pulled and rotates by one hundred eighty degrees, the rotating positioning part is driven by the adjusting part in the supporting and adjusting mechanism to be inserted into the positioning hole, the position of the rotating supporting and adjusting mechanism can be fixed, the supporting and adjusting mechanism can be prevented from rotating, and the stability of the supporting and adjusting mechanism is improved;

4. in order to realize the alignment of the welding positions of the two workpieces, the limiting support mechanism is designed, when the workpieces are welded, a limiting part in the limiting support mechanism can form a V-shaped structure, the bottoms of the workpieces can be supported through the V-shaped structure, the alignment of the welding positions of the two workpieces can be facilitated, and the two clamping and positioning mechanisms can also be facilitated to fix the two workpieces which need to be welded together;

5. in order to reduce the falling condition of tools stored on the supporting plate, the limiting supporting mechanism is designed, when the limiting supporting mechanism is used as a storage rack, a limiting part in the limiting supporting mechanism is pushed to the edge of the top of the supporting plate and then rotates and expands, so that the limiting part is in contact with the top of the supporting plate, at the moment, the edge of the top of the supporting plate can be protected through the limiting supporting mechanism, and the falling condition of tools stored on the supporting plate can be reduced;

6. in order to improve the safety of the worker when taking and placing the workpiece, the auxiliary mechanism is designed, when the workpiece is welded, the moving track of the supporting and adjusting mechanism can be prolonged through the auxiliary part in the auxiliary mechanism, so that the worker can be far away from a welding area when taking and placing the workpiece, and the safety of the worker when taking and placing the workpiece is improved;

7. this application has designed complementary unit, when using as the supporter, through setting up complementary unit and first slide rail are perpendicular, is consolidated by the fixed part again for complementary unit can support first slide rail, improves the stability after first slide rail stands up.

Drawings

FIG. 1 is a schematic structural view of a clamping device for vehicle manufacturing provided by the present application;

FIG. 2 is a schematic structural view of the clamping device for vehicle manufacture provided by the present application when used as a storage rack;

FIG. 3 is a schematic structural view of a support adjustment mechanism of the clamping device for vehicle manufacturing provided by the present application in use for welding;

FIG. 4 is a schematic view of the support adjustment mechanism of the clamping device for vehicle manufacturing provided by the present application when the storage rack is in use;

FIG. 5 is a partial top cross-sectional structural view of a support plate of the clamping device for vehicle manufacturing provided herein;

FIG. 6 is a side cut-away schematic structural view of a connecting plate of the clamping device for vehicle manufacturing provided by the present application;

FIG. 7 is a schematic view of a connection structure of a slide bar and a slide block of the clamping device for vehicle manufacture provided by the present application;

FIG. 8 is a cross-sectional structural view of a slide of a clamping device for vehicle manufacturing provided herein;

FIG. 9 is an enlarged view of the structure at A in FIG. 4;

fig. 10 is a schematic cross-sectional structural view of a limiting plate of the clamping device for vehicle manufacturing provided by the present application;

fig. 11 is a schematic cross-sectional structural view of a second slide rail of the clamping device for vehicle manufacturing provided by the present application.

The following are marked in the figure:

1. a first slide rail; 2. positioning holes; 3. a support adjustment mechanism; 301. a support plate; 302. a first inner tank; 303. a first chute; 304. a bidirectional screw rod; 305. a transmission block; 306. a bevel gear set; 307. adjusting a rod; 308. a slide base; 309. a first connecting shaft; 4. a clamping and positioning mechanism; 401. a connecting plate; 402. a slot; 403. a notch; 404. a second connecting shaft; 405. a connecting rod; 406. a positioning column; 407. a second inner tank; 408. a first spring; 5. a limiting support mechanism; 501. a second chute; 502. a slide bar; 503. a slider; 504. a third inner tank; 505. a first T-bar; 506. a square bar; 507. a second spring; 508. a connecting seat; 509. a rotating shaft; 510. a connector; 511. a support bar; 512. a limiting plate; 513. a third chute; 514. positioning a rod; 515. pushing the plate; 516. a transmission rod; 517. an arc-shaped fixture block; 518. a third spring; 6. an auxiliary mechanism; 601. a second slide rail; 602. a groove; 603. connecting columns; 604. a fourth inner tank; 605. a second T-bar; 606. a fourth spring; 607. a first jack; 608. a second jack; 609. a fixing plate; 610. a threaded hole; 611. and (4) bolts.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.

Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention as claimed, but is merely representative of some embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments of the present invention and the features and technical solutions thereof may be combined with each other without conflict.

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", and the like refer to orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and such terms are used for convenience of description and simplification of the description, and do not refer to or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 and fig. 2, the present embodiment provides a clamping device for vehicle manufacturing, which includes two first slide rails 1, a plurality of positioning holes 2 are formed on each of the two first slide rails 1, a plurality of support adjusting mechanisms 3 are disposed between the two first slide rails 1, when a gas flame machine tool is used to process a workpiece on one support adjusting mechanism 3 through the plurality of support adjusting mechanisms 3, a worker can take down the workpiece processed on the other support adjusting mechanisms 3 and place the workpiece into an unprocessed workpiece, so as to improve welding efficiency, each support adjusting mechanism 3 is provided with two clamping and positioning mechanisms 4 for clamping the workpiece and two limit supporting mechanisms 5 for supporting the workpiece in an auxiliary manner, and an auxiliary mechanism 6 is further disposed between the two first slide rails 1;

the supporting and adjusting mechanism 3 comprises a supporting part which is a rotating structure and is used for supporting the clamping and positioning mechanism 4 and placing tools;

the supporting part is provided with an adjusting part which is used for adjusting the distance between the two clamping and positioning mechanisms 4 on the supporting and adjusting mechanism 3, so that the two clamping and positioning mechanisms 4 clamp the workpiece and the clamping and positioning mechanisms 4 are connected with the positioning holes 2;

the clamping and positioning mechanism 4 comprises a connecting part and a positioning part, wherein the connecting part is arranged on the adjusting part and is used for connecting the positioning part and the adjusting part;

the positioning part is used for clamping the workpiece and is connected with the positioning hole 2, so that the position of the supporting part after rotation is fixed;

the limiting support mechanism 5 comprises a limiting part, the limiting part is arranged on the support part, and the limiting part is of an angle adjusting type structure and is used for supporting when a workpiece is fixed and protecting the edge of the support part;

the limiting part is provided with a locking part which is used for locking the limiting part after the angle is adjusted;

the auxiliary mechanism 6 comprises an auxiliary part and a fixed part, wherein the auxiliary part is arranged between the two first slide rails 1 and is used for prolonging the moving track of the supporting and adjusting mechanism 3 and connecting the two first slide rails 1 together;

the fixing part is arranged on the auxiliary part and used for fixing the connection between the first slide rail 1 and the auxiliary part.

As shown in fig. 1, 2, 3, 4 and 5, as a preferred embodiment, in addition to the above-mentioned manner, further, the support part includes a support plate 301, when the welding fixture is arranged on a workbench of a gas flame welding machine tool, the bottom of the support plate 301 is contacted with the workbench, the moving stability of the support plate 301 can be improved, the two sides of the support plate 301 are fixedly connected with the first connecting shafts 309, the outer surfaces of the two first connecting shafts 309 are rotatably connected with the sliding seats 308 through bearings, the inner walls of the two sliding seats 308 are respectively connected with the outer surfaces of the two first sliding rails 1 in a sliding way, the first slide rail 1 and the support plate 301 can be coupled together by the cooperation of the slide 308 and the first coupling shaft 309, make first slide rail 1 can carry out spacingly to the removal orbit of backup pad 301, and then improve the stability that supports adjustment mechanism 3 bulk movement.

As shown in fig. 5, as a preferred embodiment, based on the above-mentioned manner, further, the adjusting portion includes a first inner groove 302 and two first sliding grooves 303 respectively located at two sides of the first inner groove 302, the first inner groove 302 and the first sliding grooves 303 are both opened on the supporting plate 301, the first inner groove 302 is located at the middle portion of the supporting plate 301, a bidirectional screw 304 is rotatably connected between the first inner groove 302 and the two first sliding grooves 303 through a bearing, two driving blocks 305 respectively located in the two first sliding grooves 303 are threadedly connected to the outer surface of the bidirectional screw 304, the two driving blocks 305 thereon can be driven to approach or separate from each other through the rotation of the bidirectional screw 304, so as to adjust the distance between the two clamping and positioning mechanisms 4 on the supporting and adjusting mechanism 3, a bevel gear group 306 located in the first inner groove 302 is fixedly connected to the outer surface of the bidirectional screw 304, the bevel gear group 306 is composed of two bevel gears respectively fixedly installed on the bidirectional screw 304 and the adjusting rod 307 and engaged with each other, an adjusting rod 307 perpendicular to the bidirectional screw 304 is fixedly connected to the bevel gear set 306, one end, far away from the bevel gear set 306, of the adjusting rod 307 penetrates through the supporting plate 301 and extends to the outside of one side of the supporting plate 301, the outer surface of the adjusting rod 307 is rotatably connected with the inner wall of the supporting plate 301 through a bearing, the bevel gear set 306 can be driven to rotate through rotation of the adjusting rod 307, and the bidirectional screw 304 can be driven to rotate through the bevel gear set 306.

As shown in fig. 3 and fig. 6, as a preferred embodiment, in addition to the above manner, the connecting portion further includes a connecting plate 401, the bottom of the connecting plate 401 is fixedly connected to the top of the driving block 305, a notch 403 and a slot 402 communicated with the notch 403 are formed at an end of the connecting plate 401, the notch 403 is located above the slot 402 and is communicated with the outside, and a second connecting shaft 404 is rotatably connected to the slot 402 through a bearing.

As shown in fig. 3, 4 and 6, as a preferred embodiment, in addition to the above-mentioned embodiments, the positioning part includes a positioning post 406 inserted into the slot 402, the positioning post 406 contacts with the second connecting shaft 404 when inserted into the slot 402, the positioning post 406 can be limited by the second connecting shaft 404, a second inner groove 407 is formed in the positioning post 406, a connecting rod 405 is slidably connected to the second inner groove 407, an end of the connecting rod 405 passes through the second inner groove 407, extends into the slot 402, and is fixedly connected to an outer surface of the second connecting shaft 404, a first spring 408 located in the second inner groove 407 is provided on an outer surface of the connecting rod 405, both ends of the first spring 408 are fixedly connected to the connecting rod 405 and the second inner groove 407, the positioning post 406 is separated from the slot 402 by pulling the positioning post 406 outward, the positioning post 406 is rotated by one hundred eighty degrees around the second connecting shaft 404, at this time, the connecting rod 405 passes through the notch 403, and the form of the clamping and positioning mechanism 4 can be switched from fig. 3 to fig. 6, and the positioning post 406 can be inserted into the positioning hole 2.

As shown in fig. 3, 7 and 8, as a preferred embodiment, in addition to the above-mentioned mode, the limiting portion includes a second sliding slot 501 which is opened on the supporting plate 301 and is located between the two first sliding slots 303, a sliding rod 502 is fixedly installed in the second sliding slot 501, a sliding block 503 is slidably connected to the outer surface of the sliding rod 502, the sliding block 503 can be supported and limited by the sliding rod 502, so that the sliding block 503 can stably move in the second sliding slot 501, a third inner slot 504 is formed in the sliding block 503, a first T-shaped rod 505 is slidably connected to the third inner slot 504, a square rod 506 is rotatably connected to the top end of the first T-shaped rod 505 through a bearing, a connecting seat 508 which is contacted with the top end of the sliding block 503 is fixedly connected to the top end of the square rod 506 through the top wall of the third inner slot 504, and the connecting seat 508 can be rotated when the square rod 506 is moved above the sliding block 503 by pulling the connecting seat 508 upwards, and the rear rod 506 is reset after the connecting seat 508 is loosened, the rotating connecting seat 508 can be limited to avoid rotating again, the outer surface of the first T-shaped rod 505 is provided with a second spring 507, and two ends of the second spring 507 are fixedly connected with the first T-shaped rod 505 and the third inner groove 504 respectively.

As shown in fig. 7, as a preferred embodiment, on the basis of the above-mentioned mode, further, the connecting groove has all been seted up to the both sides of connecting seat 508, all be connected with pivot 509 through the bearing rotation in two connecting grooves, the one end of two pivot 509 all passes connecting seat 508 and extends to the outside of connecting seat 508 one side, the equal fixedly connected with in outer surface of two pivot 509 is located the connecting head 510 of connecting groove, the equal fixedly connected with in one side of connecting seat 508 and the bracing piece 511 of connecting seat 508 end contact are kept away from to two connecting heads 510, two bracing pieces 511 can rotate and form the V-shaped structure, can support the bottom of work piece through the V-shaped structure, can be convenient for two alignment of work piece welding position, also can be convenient for two clamp positioning mechanism 4 fix two work pieces that need the welding together.

As shown in fig. 7, 9 and 10, as a preferred embodiment, on the basis of the above manner, further, the locking portion includes a limiting plate 512 fixedly installed on one side of the connecting seat 508, a third sliding groove 513 is formed in the limiting plate 512, a positioning rod 514 is fixedly installed in the third sliding groove 513, the outer surface of the positioning rod 514 is slidably connected with two push plates 515, the ends of the push plates 515 extend to the upper side of the limiting plate 512, the push plates 515 can be supported and limited by the positioning rod 514, so as to improve the moving stability of the push plates 515, a transmission rod 516 is fixedly connected to the sides of the two push plates 515 away from each other, the ends of the two transmission rods 516 that are away from each other pass through the limiting plate 512 and respectively extend to the outer portions of the two sides of the limiting plate 512 and are respectively and fixedly connected with arc-shaped fixture blocks 517, the surfaces of the two arc-shaped fixture blocks 517 respectively contact with the two rotating shafts 509, a third spring 518 located below the positioning rod 514 is fixedly connected between the two push plates 515, the one side that arc fixture block 517 kept away from the transfer line 516 and the region that pivot 509 is located the connecting seat 508 outside all are provided with the tooth, and when arc fixture block 517 contacted with pivot 509, tooth can be with the tooth block on the pivot 509 to avoid pivot 509 to take place to rotate, and then fixed the position of bracing piece 511 after the pairing rotation.

As shown in fig. 1 and fig. 11, as a preferred embodiment, on the basis of the above manner, the auxiliary portion includes two second slide rails 601, the two second slide rails 601 respectively contact with end portions of the two first slide rails 1, grooves 602 are formed at bottom portions of the two second slide rails 601, connection posts 603 are fixedly connected in the two grooves 602, fourth inner grooves 604 are formed in the two first slide rails 1 near one ends of the second slide rails 601, second T-shaped rods 605 are slidably connected in the fourth inner grooves 604, one ends of the second T-shaped rods 605 near the second slide rails 601 penetrate the fourth inner grooves 604 and extend into the grooves 602 and are rotatably connected with the outer surfaces of the connection posts 603 through bearings, fourth springs 606 are fixedly connected to one ends of the second T-shaped rods 605 far from the connection posts 603, and end portions of the fourth springs 606 are fixedly connected with the fourth inner grooves 604.

As shown in fig. 1, 2 and 11, as a preferred embodiment, in addition to the above-mentioned manner, the fixing portion includes two second insertion holes 608 respectively opened on two second T-shaped bars 605, first insertion holes 607 matched with the two second insertion holes 608 are respectively opened on the inner walls of both sides of two fourth inner grooves 604, the second insertion holes 608 are overlapped with the first insertion holes 607 when the second slide rail 601 is vertically contacted with the first slide rail 1, fixing plates 609 are respectively fixedly connected between the two second slide rails 601 and between the two first slide rails 1, the two fixing plates 609 are respectively located on the sides far away from the first slide rail 1 and the second slide rail 601, threaded holes 610 and bolts 611 matched with the threaded holes 610 are respectively provided on the two fixing plates 609, the welding jig can be fixed on the workbench by screwing the bolts 611 into the threaded holes 610 and the workbench, so as to fix the positions of the first slide rail 1 and the second slide rail 601, referring to fig. 2, when the second slide rail 601 vertically contacts the first slide rail 1, the bolt 611 is screwed between the first insertion hole 607 and the second insertion hole 608, so that the connection stability between the first slide rail 1 and the second slide rail 601 can be improved, and the supporting effect of the second slide rail 601 on the first slide rail 1 can be further improved.

Specifically, the use method of the clamping device for vehicle manufacturing comprises the following steps:

firstly, welding a workpiece, placing the welding fixture on a workbench of a gas flame welding machine tool, screwing a bolt 611 between a threaded hole 610 and the workbench, ensuring that a second sliding rail 601 is in contact with a first sliding rail 1, installing the welding fixture on the workbench, pushing a push plate 515, driving an arc-shaped fixture block 517 to be separated from a rotating shaft 509 through the push plate 515, then rotating a support rod 511, adjusting the angle of the support rod 511 according to actual conditions, loosening the push plate 515 after adjustment, driving an arc-shaped fixture block 517 to reset through the push plate 515 and a transmission rod 516 under the action force of a third spring 518, clamping teeth on the arc-shaped fixture block 517 with teeth on the rotating shaft 509, and further fixing the position of the rotating support rod 511;

a workpiece to be welded is placed between two positioning columns 406 above the supporting and adjusting mechanism 3 and is in contact with a supporting rod 511, the adjusting rod 307 is rotated, the bevel gear set 306 and the bidirectional screw rod 304 are driven by the adjusting rod 307 to rotate, so that the two transmission blocks 305 are close to each other, the two transmission blocks 305 drive the two positioning columns 406 to be close to each other through the two connecting plates 401 and clamp and fix the workpiece, and then the workpiece is welded through a gas flame welding machine;

secondly, the welding fixture is used as a shelf, the welding fixture is switched from the shape shown in fig. 1 to the shape shown in fig. 2, firstly, the bolt 611 is screwed off, the positioning column 406 is pulled to separate the positioning column 406 from the slot 402, then the positioning column 406 is rotated by one hundred eighty degrees by taking the second connecting shaft 404 as a center to rotate the positioning column 406 from one side of the connecting plate 401 to the other side of the connecting plate 401, then the positioning column is loosened, the end part of the positioning column 406 is inserted into the slot 402, the two limiting support mechanisms 5 are pushed to be away from each other, the support rod 511 is pulled upwards to separate the square rod 506 from the sliding block 503 and rotate the connecting seat 508 to enable the connecting seat 508 to be vertical to the second sliding groove 501, and then the push plate 515 is pushed and the support rod 511 is rotated to enable the support rod 511 to be in contact with the support plate 301;

secondly, pulling the second slide rail 601 to separate the second slide rail 601 from the first slide rail 1, rotating the second slide rail 601 by taking the connecting column 603 as a center to enable the second slide rail 601 to be perpendicular to and contact with the first slide rail 1, at the moment, enabling the first inserting hole 607 and the second inserting hole 608 to be overlapped, screwing the bolt 611 into the space between the first inserting hole 607 and the second inserting hole 608, erecting the first slide rail 1, rotating the supporting plate 301 and the adjusting rod 307, driving the bevel gear group 306 and the bidirectional screw rod 304 to rotate through the adjusting rod 307 to enable the two clamping and positioning mechanisms 4 to be away from each other, so that the positioning column 406 is inserted into the corresponding positioning hole 2, finally forming the welding clamp into the shape of fig. 2, and placing a tool on the supporting plate 301 to temporarily store the tool;

when the welding fixture needs to be switched from fig. 2 to fig. 1, the adjusting rod 307 is rotated to separate the positioning post 406 from the positioning hole 2, the bolt 611 is screwed off, the first slide rail 1 is placed obliquely, the second slide rail 601 is pulled and rotated to reset, the supporting plate 301 is rotated to reset the supporting plate 301, the pushing plate 515 is pushed and the supporting rod 511 is rotated to separate the supporting rod 511 from the supporting plate 301, the connecting seat 508 is pulled upwards and rotated to make the connecting seat 508 parallel to the second sliding groove 501, and the positioning post 406 is pulled outwards and rotated reversely to reset the positioning post 406.

The above embodiments are only used for illustrating the invention and not for limiting the technical solutions described in the invention, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above embodiments, and therefore, any modification or equivalent replacement of the present invention is made; all such modifications and variations are intended to be included herein within the scope of this disclosure and the appended claims.