CN113547259B

CN113547259B - Clamp and welding method

Info

Publication number: CN113547259B
Application number: CN202110859785.8A
Authority: CN
Inventors: 方银胜; 程浩; 孟祥新; 王树辉; 张国亮; 芮世力; 孟昂
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-05-03
Anticipated expiration: 2041-07-28
Also published as: CN113547259A

Abstract

The application discloses a clamp and a welding method, and belongs to the technical field of automobile production auxiliary equipment tools. The jig includes: the clamping device comprises a first clamping assembly and a second clamping assembly. The first clamping assembly comprises a first positioning mechanism, the first positioning mechanism comprises a first positioning plate, a first positioning pin and a common positioning pin, the first positioning pin is positioned on the first side of the first positioning plate, and the common positioning pin is positioned on the second side of the first positioning plate; the second clamping assembly comprises a second positioning mechanism, the second positioning mechanism comprises a second positioning plate and a second positioning pin, the extending direction of the second positioning plate is perpendicular to the extending direction of the first positioning plate, and the second positioning pin is located at the upper end of the second positioning plate. The fixture can realize that two assemblies to be welded share one fixture on the premise of not changing the structure, thereby reducing the manufacturing cost of the fixture.

Description

Clamp and welding method

Technical Field

The application relates to the technical field of auxiliary equipment tools for automobile production, in particular to a clamp and a welding method.

Background

Currently, in the manufacturing process of automobiles, it is often necessary to achieve the connection between the components through a welding operation. In the welding operation, a jig is generally used to clamp the member to be welded to position the member to be welded.

In the correlation technique, the left and right rear suspension elastic seat assemblies are two assemblies to be welded of an automobile, wherein each rear suspension elastic seat assembly comprises a to-be-clamped plate and an elastic fixed seat, the elastic fixed seat is positioned on the to-be-clamped plate, and the elastic fixed seat can be connected with the to-be-clamped plate through welding operation.

At present, when welding operation is performed on a left rear suspension elastic seat assembly and a right rear suspension elastic seat assembly, each to-be-clamped plate needs to be correspondingly provided with a corresponding special clamp for clamping and positioning, namely, the left rear elastic seat assembly and the right rear elastic seat assembly need two clamps for clamping and positioning. Due to the arrangement, the number of the clamps needed to be used is large, the manufacturing cost of the clamps is high, and the manufacturing cost of the automobile is high.

Disclosure of Invention

In view of this, the application provides a fixture and a welding method, which can use one fixture to clamp and position the left and right rear suspension elastic seat assemblies, thereby reducing the number of the required fixtures, reducing the manufacturing cost of the fixture, and further saving the manufacturing cost of the automobile.

Specifically, the method comprises the following technical scheme:

in one aspect, an embodiment of the present application provides a clamp, where the clamp includes: a first clamping assembly and a second clamping assembly;

the first clamping assembly comprises a first positioning mechanism; the first positioning mechanism comprises a first positioning plate, a first positioning pin and a common positioning pin; the first positioning pin is positioned at the upper part of the side where the first plate surface of the first positioning plate is positioned, the common positioning pin is positioned at the upper part of the side where the second plate surface of the first positioning plate is positioned, and the side where the first plate surface is positioned is opposite to the side where the second plate surface is positioned;

the second clamping assembly comprises a second positioning mechanism; the second positioning mechanism comprises a second positioning plate and a second positioning pin; the second positioning pin is located at the upper end of the second positioning plate, and the extending direction of the first positioning pin, the extending direction of the common positioning pin and the extending direction of the second positioning pin are all parallel to the plane where the second positioning plate is located and the plane where the first positioning plate is located.

In one possible implementation, the first positioning mechanism further includes: sharing a positioning block and a first positioning block;

the common positioning block is positioned on the side of the second plate surface of the first positioning plate and fixedly connected with the first positioning plate, and the common positioning pin penetrates through the upper part of the common positioning block;

the first positioning block is located on the side of the first plate surface of the first positioning plate and fixedly connected with the first positioning plate, and the first positioning pin penetrates through the upper portion of the first positioning block.

In one possible implementation, the first clamping assembly includes: a first clamping common mechanism;

the first clamping shared mechanism comprises a first air cylinder, a first pressing arm and a handle; the upper part of the first cylinder is fixedly connected with the first positioning plate, and the axis of the first cylinder is parallel to the plane of the first positioning plate; one end of the first pressing arm is rotatably connected with a piston rod of the first air cylinder and is suitable for pressing the to-be-clamped piece opposite to the upper end of the first positioning plate when the to-be-clamped piece is clamped by the clamp; the handle is located on the first pressing arm, and the extending direction of the handle is perpendicular to the extending direction of the first pressing arm.

In one possible implementation, the first clamping assembly further includes: a lever valve and a lever valve positioning block;

the lever valve positioning block is positioned at the upper parts of the first positioning plate and the common positioning block and is fixedly connected with the first positioning plate;

the lever valve is positioned on one side, away from the first positioning plate, of the lever valve positioning block, the lever valve is fixedly connected with the lever valve positioning block, the lever valve is positioned in the air path control system and is suitable for controlling the connection or disconnection of the air path control system, and the air path control system is suitable for providing an air source for the first air cylinder (131) in a connection state; the lever valve is in a normally open state, and a first rolling piece of the lever valve is suitable for being pushed by the to-be-clamped piece when the to-be-clamped piece is clamped by the clamp and has installation dislocation, so that the lever valve controls the air circuit control system to be in an open circuit.

In one possible implementation, the first clamping shared mechanism further includes: a turning block and a communicating valve;

the communicating valve is positioned on the side of the first plate surface of the first positioning plate, the communicating valve is fixedly connected with the first positioning plate, the communicating valve is positioned in the air path control system and is suitable for controlling the communication or the disconnection of the air path control system together with the lever valve, and the communicating valve is in a normally closed state; the rotating block is fixed on the first pressing arm and is rotatably connected with the first positioning plate, and the rotating block is suitable for pushing the second rolling piece of the communication valve when the clamp clamps the to-be-clamped piece and the to-be-clamped piece is installed correctly, so that the communication valve and the lever valve are both in an open state to control the gas circuit control system to be communicated.

In one possible implementation, the first clamping assembly further includes: a first clamping mechanism;

the first clamping mechanism includes: the common pressing pin, the first common pressing block and the first pressing block are arranged on the base; the first pressing block and the first common pressing block are oppositely arranged at the other end, far away from the first cylinder, of the first pressing arm; the common pressing pin is positioned on the first common pressing block and is suitable for being matched with the common positioning pin when the clamp clamps the to-be-clamped piece.

In one possible implementation, the second positioning mechanism further includes: a second positioning block;

the second positioning block is positioned at the upper part of the second positioning plate and is fixedly connected with the second positioning plate, and the second positioning pin penetrates through the second positioning block and is fixed at the upper end of the second positioning plate.

In one possible implementation, the second clamping assembly further includes: a second clamping common mechanism;

the second clamping shared mechanism includes: a second cylinder and a second hold-down arm; the second pressing arm is rotatably connected with the second positioning plate and is suitable for being positioned at the upper part of the second positioning plate when clamping a piece to be clamped; one end of the second pressing arm is rotatably connected with a piston rod of the second air cylinder; the upper portion of the second cylinder is fixedly connected with the second positioning plate, and the axis of the second cylinder is parallel to the plane where the second positioning plate is located.

In one possible implementation, the second clamping assembly further includes: a second clamping mechanism;

the second clamping mechanism comprises a second common pressing block and an auxiliary pressing block; the second common pressing block and the auxiliary pressing block are both located at the other end, far away from the second cylinder, of the second pressing arm and are both suitable for being in contact with the to-be-clamped piece when the to-be-clamped piece is clamped by the clamp.

In another aspect, embodiments of the present application further provide a welding method, where the method is applied to the fixture according to the above aspect, and the method includes:

placing a first plate to be clamped on the first positioning plate and the second positioning plate, and enabling the second positioning pin and the common positioning pin to penetrate through the first plate to be clamped;

placing a first elastic fixing seat on the first plate to be clamped, and connecting the first elastic fixing seat with the first plate to be clamped through welding;

placing a second plate to be clamped on the first positioning plate and the second positioning plate, and enabling the first positioning pin and the common positioning pin to penetrate through the second plate to be clamped;

and placing a second elastic fixing seat on the second to-be-clamped plate, and connecting the second elastic fixing seat with the second to-be-clamped plate through welding.

The technical scheme provided by the embodiment of the application has the beneficial effects that at least:

when a first to-be-clamped plate of a first to-be-welded assembly needs to be clamped, the first to-be-clamped plate is placed on the first positioning plate and the second positioning plate, the middle part of the first to-be-clamped plate is fixed by the aid of the common positioning pin, and the second positioning pin fixes one side of the first to-be-clamped plate, so that the first to-be-clamped plate can be fixed; when the second that the welding set was treated to needs centre gripping second treats the grip block, treat the grip block through treating the second and arrange first locating plate and second locating plate in on, utilize the fixed second of sharing locating pin to treat the middle part of grip block, the one side of grip block is treated to the fixed second of first locating pin, can realize treating the fixed of grip block to the second. Therefore, the fixture provided by the embodiment of the application can be used for clamping and fixing the first to-be-clamped plate in the first to-be-welded assembly and the second to-be-clamped plate in the second to-be-welded assembly, and compared with the situation that each to-be-welded assembly in the related art needs to be correspondingly provided with one fixture, the production quantity of the fixture can be reduced, the manufacturing cost of the fixture is further reduced, and the manufacturing cost of an automobile is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a clamp according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a first positioning pin, a common positioning pin, and a second positioning pin in a fixture provided in an embodiment of the present application;

FIG. 3 is a first structural schematic diagram of a first clamping assembly of a clamp according to an embodiment of the present disclosure;

FIG. 4 is a second structural diagram of a first clamping assembly of a clamping apparatus according to an embodiment of the present disclosure;

FIG. 5 is a side view of a first clamping assembly of a clamp according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram illustrating a third structure of a first clamping assembly of a clamping apparatus according to an embodiment of the present disclosure;

FIG. 7 is a first structural schematic diagram of a second clamping assembly of a clamping apparatus according to an embodiment of the present disclosure;

FIG. 8 is a second structural diagram of a second clamping assembly of a clamping apparatus according to an embodiment of the present disclosure;

fig. 9 is a schematic structural view of an open state of a clamp when clamping a first plate to be clamped according to an embodiment of the present application;

fig. 10 is a schematic structural diagram illustrating an open state of a clamp when clamping a second board to be clamped according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a clamping state of a clamp when clamping a first plate to be clamped according to an embodiment of the present application;

fig. 12 is a schematic structural view illustrating a clamping state of a clamp when the clamp clamps a second board to be clamped according to an embodiment of the present application;

fig. 13 is a flowchart of a welding method according to an embodiment of the present disclosure.

The reference numerals in the figures are denoted respectively by:

1-a first clamping assembly, 11-a first positioning mechanism, 111-a first positioning plate, 112-a first positioning pin, 113-a common positioning pin, 114-a common positioning block, 115-a lever valve positioning block, 116-a first positioning block, 117-a lever valve, 1171-a first rolling member, 12-a first clamping mechanism, 121-a common pressing pin, 122-a first common pressing block, 123-a first pressing block, 124-a first "i" shaped pressing block; 125-a first male compact; 13-first clamping shared mechanism, 131-first cylinder, 132-first hold down arm, 133-handle, 134-turning block, 135-communication valve, 1351-second rolling member;

2-a second clamping assembly, 21-a second positioning mechanism, 211-a second positioning plate, 212-a second positioning pin, 213-a second positioning block, 22-a second clamping mechanism, 221-a second common pressing block, 222-an auxiliary pressing block, 223-a second I-shaped pressing block; 224-a second male compact; 23-a second clamping shared mechanism, 231-a second air cylinder, 232-a second pressing arm;

01-a first component to be welded, 011-a first plate to be clamped, 012-a first elastic fixed seat, 02-a second component to be welded, 021-a second plate to be clamped, 022-a second elastic fixed seat.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 application.

The terms of orientation referred to in the embodiments of the present application, such as "upper", "lower", "side of plate", etc., are generally based on the relative relationship of the orientations shown in fig. 1, and these terms of orientation are used only for describing the structure of the clamp of the embodiments of the present application more clearly, and are not used for describing absolute orientation. The orientation may change when the product is placed in different positions, for example, "upper" and "lower" may be interchanged.

In order to make the technical solutions and advantages of the present application clearer, the following will describe the embodiments of the present application in further detail with reference to the accompanying drawings.

Currently, in the manufacturing process of automobiles, it is often necessary to achieve the connection between the components through a welding operation. In the welding operation, a jig is generally used to clamp the workpiece to be welded so as to position the workpiece to be welded. The fixture has the function of ensuring that the parts to be welded can be accurately positioned, and in general, one fixture needs to be correspondingly used for one part to be welded.

Control back overhang spring support subassembly and be two of car and treat the welded assembly, wherein every back overhang spring support subassembly is including treating grip block and elasticity fixing base, and the elasticity fixing base is located treats the grip block, can be connected elasticity fixing base and treating the grip block through welding operation. In the related art, when welding operation is performed on the left rear suspension elastic seat assembly and the right rear suspension elastic seat assembly, each plate to be clamped needs to be correspondingly provided with a corresponding special clamp for clamping and positioning, namely, the left rear elastic seat assembly and the right rear elastic seat assembly need two clamps for clamping and positioning. Due to the arrangement, the number of the clamps needed to be used is large, the manufacturing cost of the clamps is high, and the manufacturing cost of the automobile is high.

In order to solve the problems in the related art, the present application provides a clamp, a structural schematic diagram of which is shown in fig. 1.

Referring to fig. 1, the clamp comprises a first clamping assembly 1 and a second clamping assembly 2.

Wherein, first centre gripping subassembly 1 includes first positioning mechanism 11, first positioning mechanism 11 includes first locating plate 111, first locating pin 112 and sharing locating pin 113, wherein first locating plate 111 and base (not shown in the figure) fixed connection, first locating pin 112 is located the upper portion of first face place side 101 of first locating plate 111, sharing locating pin 113 is located the upper portion of second face place side 102 of first locating plate 111, first face place side 101 is relative with second face place side 102.

The second clamping assembly 2 comprises a second positioning mechanism 21, the second positioning mechanism 21 comprises a second positioning plate 211 and a second positioning pin 212, and the second positioning plate 211 is fixedly connected with a base (not shown in the figure); the second positioning pin 212 is located at the upper end of the second positioning plate 211, and the extending direction of the first positioning pin 112, the extending direction of the common positioning pin 113 and the extending direction of the second positioning pin 212 are all parallel to the plane where the second positioning plate 211 is located and the plane where the first positioning plate 111 is located.

The working principle of the clamp provided by the embodiment of the application is as follows:

when a first to-be-clamped plate of a first to-be-welded assembly needs to be clamped, the first to-be-clamped plate is placed on the first positioning plate 111 and the second positioning plate 211, the middle of the first to-be-clamped plate is fixed through the common positioning pin 113, and one side of the first to-be-clamped plate is fixed through the second positioning pin 212, so that the first to-be-clamped plate can be fixed;

when the second that treats the welded assembly is treated to the grip block to needs centre gripping second, treat the grip block through treating the second and arrange first locating plate 111 and second locating plate 211 in, utilize shared locating pin 113 fixed second to treat the middle part of grip block, first locating pin 112 is fixed the second and is treated one side of grip block, can realize treating the fixed of centre gripping to the second.

Therefore, the clamp provided by the embodiment of the application can be used for clamping and fixing the first to-be-clamped plate in the first to-be-welded assembly and clamping and fixing the second to-be-clamped plate in the second to-be-welded assembly, and compared with the situation that each to-be-welded assembly needs to be correspondingly provided with one clamp in the related art, the production quantity of the clamp can be reduced, the manufacturing cost of the clamp is further reduced, and the manufacturing cost of an automobile is reduced.

The structure of the clamp provided by the embodiment of the present application is further described below:

in one possible design, first locating pin 112 and second locating pin 212 are circular in cross-section, cylindrical in the lower portion and conical in the upper portion. So arranged, the first locating pin 112 and the second locating pin 212 are facilitated to be inserted into the plate to be clamped.

In one possible design, referring to fig. 2, the lower portion of the common locating pin 113 is in the shape of a cuboid, the upper portion is in the shape of a quadrangular pyramid, and the cross-section of the lower portion is in the shape of a diamond. Because the shared locating pin 113 all needs to be used when the clamping plate is to be clamped at every time, the arrangement can enable the clamping plate to be in contact with a plurality of surfaces of the shared locating pin 113 when the clamping plate is fixed, and the friction force generated during the contact can further ensure the stability of the connection between the shared locating pin 113 and the clamping plate.

In one possible design, referring to fig. 3, the first positioning mechanism 11 further includes: sharing a positioning block 114 and a first positioning block 116.

The common positioning block 114 is located at the second plate surface side 102 of the first positioning plate 111 and is fixedly connected to the first positioning plate 111, and the common positioning pin 113 passes through an upper portion of the common positioning block 114.

The common positioning block 114 is used for positioning and fixing the common positioning pin 113.

The first positioning block 116 is located on the first plate surface side 101 of the first positioning plate 111 and is fixedly connected to the first positioning plate 111, and the first positioning pin 112 passes through the upper portion of the first positioning block 116.

The first positioning block 116 is provided for positioning and fixing the first positioning pin 112.

In one possible design, referring to fig. 4, the first clamping assembly 1 further comprises: a first clamping shared mechanism 13.

Wherein, the upper portion of the first cylinder 131 is rotatably connected with the first positioning plate 111, and the axis of the first cylinder 131 is parallel to the plane of the first positioning plate 111, that is, the first cylinder 131 is located at one side of the first positioning plate 111, and can provide pressing force for the first pressing arm 132, so as to ensure that the first pressing arm 132 can be continuously and stably pressed on the member to be clamped.

The first pressing arm 132 is rotatably connected to the first positioning plate 111, one end of the first pressing arm 132 is rotatably connected to the piston rod of the first cylinder 131, and the first pressing arm 132 is adapted to press the member to be clamped against the upper end of the first positioning plate 111 when the clamp clamps the member to be clamped.

Optionally, the rotation of the first pressing arm 132 needs to be completed in a state where the lever valve 117 is communicated with the air path control system, and if the lever valve is in an open circuit state with the air path control system, the first pressing arm 132 cannot be pressed down due to the fact that the internal gas cannot circulate.

The handle 133 is disposed on the first pressing arm 132, and the handle 133 extends in a direction perpendicular to the extending direction of the first pressing arm 132. The handle 133 is provided to facilitate the operator's turning operation of the first pressing arm 132.

In one possible design, with continued reference to fig. 3, the first positioning mechanism 11 further includes: a lever valve 117 and a lever valve positioning block 115.

The lever valve positioning block 115 is located above the first positioning plate 111 and the common positioning block 114, and is fixedly connected to the first positioning plate 111 for positioning and fixing the lever valve 117.

The lever valve 117 is located on one side of the lever valve positioning block 115 away from the first positioning plate 111, and the lever valve 117 is fixedly connected with the lever valve positioning block 115.

The lever valve 117 is positioned in the air path control system and is suitable for controlling the connection or disconnection of the air path control system, and the air path control system is suitable for providing an air source for the first air cylinder 131 in a connection state; the lever valve 117 is in a normally open state, and the first rolling member 1171 of the lever valve 117 is suitable for being pushed by the member to be clamped when the member to be clamped is clamped by the clamp and the installation dislocation exists, so that the lever valve 117 controls the air circuit control system to be disconnected.

Optionally, the lever valve 117 includes a first valve body 1172, first gas line connections 1173 on opposite sides of the first valve body 1172, and a first rolling member 1171 on an upper portion of the first valve body. The lever valve 117 is in a normally open state, and the first rolling member 1171 is positioned on one side of the first valve body 1172; when the clamp clamps the to-be-clamped member and the to-be-clamped member is installed and dislocated, the to-be-clamped member pushes the first rolling member 1171 to move, the first rolling member 1171 is pushed to move from one side of the first valve body 1172 to the other side, and at the moment, the lever valve 117 is in a disconnected state, namely, the gas circuit control system is disconnected.

The lever valve 117 is communicated with the air channel control system, and the first rolling member 1171 of the lever valve 117 is suitable for being pushed by the to-be-clamped member when the to-be-clamped member is clamped by the clamp and has installation dislocation, so that the lever valve 117 controls the air channel control system to be disconnected.

Optionally, the first rolling element 1171 is a cylindrical structure, and a sliding rail is arranged on the upper portion of the first valve body 1172, and the cylindrical structure can slide along the sliding rail under the pushing action of an external force.

By providing the lever valve 117, a positive mounting of the plate to be clamped can be ensured. One side of the plate to be clamped, which is close to the first clamping assembly 1, is turned upwards, namely the edge of the stop of the plate to be clamped. The forward installation means that the tang limit of treating the grip block is placed upwards, and if the installation is reversed, the tang limit of grip block can extrude first rolling member 1171 of lever valve 117, makes it take place to roll, leads to the gas circuit control system to break circuit.

In one possible design, referring to fig. 5, the first clamping and sharing mechanism 13 further includes: a rotation block 134 and a communication valve 135.

The communication valve 135 is located on the first plate surface side 101 of the first positioning plate 111, the communication valve 135 is fixedly connected with the first positioning plate 111, the communication valve 135 is located in the gas circuit control system and is suitable for controlling the communication or disconnection of the gas circuit control system together with the lever valve 1179, and the communication valve 135 is in a normally closed state; the rotating block 134 is fixed on the first pressing arm 132 and is rotatably connected with the first positioning plate 111, and the rotating block 134 is adapted to push the second rolling member 1351 of the communication valve 135 when the clamp clamps the member to be clamped and the member to be clamped is correctly installed, so that the communication valve 135 and the lever valve 117 are both in an open state to control the communication of the air path control system.

Through setting up the intercommunication valve 135 with the turning block 134 complex for the intercommunication valve 135 is in normally closed state, and only when the anchor clamps centre gripping treats the holder, namely after the second rolling piece 1351 of intercommunication valve 135 is promoted by turning block 124, just can be in open mode, and gas circuit control system communicates, ensures that gas circuit control system and first cylinder 131 can communicate only when the anchor clamps centre gripping treats the holder.

Optionally, the communication valve 135 includes a second valve body 1352, second air path connections 1353 on opposite sides of the second valve body 1352, and second rollers 1351 on an upper portion of the second valve body 1352. The communication valve 135 is in a normally closed state, in which the second rolling member 1351 is on the side of the second valve body 1352; when the clamp clamps the piece to be clamped, the rotating block 134 pushes the second rolling member 1351 of the communication valve 135 to move from one side of the second valve body 1352 to the other side, and at the moment, the communication valve 135 is in an open state, namely, the air passage control system is communicated.

Optionally, the second rolling element 1351 is a cylindrical structure, and a sliding rail is disposed on the upper portion of the second valve body, and the cylindrical structure can slide along the sliding rail under the pushing action of an external force.

It can be understood that the communication valve 135 and the above-described lever valve 117 are part of the pneumatic control system, the first cylinder 131, the communication valve 135 and the lever valve 117 are connected in series in the pneumatic control system, and only when the communication valve 135 and the lever valve 117 are both in the open state, the whole pneumatic control system can be communicated, and the first cylinder 131 can obtain the air pressure.

In one possible design, referring to fig. 6, the first clamping assembly 1 further comprises: a first clamping mechanism 12.

Wherein the first clamping mechanism 12 includes: a common hold-down pin 121, a first common hold-down block 122, a first hold-down block 123; the first pressing block 123 and the first common pressing block 122 are oppositely arranged at the other end of the first pressing arm 132 away from the first cylinder 131; the common hold-down pin 121 is located on the first common hold-down block 122 and is adapted to cooperate with the common alignment pin 113 when the clamp is holding a member to be clamped.

So set up, when operating personnel handheld handle 133 pushed down the operation, under the drive of handle 133, sharing hold-down pin 121 can penetrate the upper portion of elasticity fixing base, and just first compact heap 123 and first sharing compact heap 122 push down the upper portion of treating the grip block simultaneously to the realization is to compressing tightly of elasticity fixing base.

In one possible design, referring to fig. 6, the first clamping mechanism 12 further includes: the first I-shaped pressing block 124 is positioned on one side, facing the first positioning plate 111, of the first pressing arm 132, and the first I-shaped pressing block 124 is positioned on one side, facing the first positioning plate 111, of the first pressing arm 132; first protruding type compact heap 125 has on first locating plate 111, and first protruding type compact heap 125 is located first locating plate 111 upper end, and first "worker" style of calligraphy compact heap 124 is suitable for when the anchor clamps centre gripping treats that the centre gripping subassembly contacts with first protruding type compact heap 125.

Through setting up first "worker" style of calligraphy compact heap 124 and first protruding type compact heap 125 to realize spacing to first pressure arm 132, prevent that first pressure arm 132 from taking place to rock in the use.

In one possible design, referring to fig. 1, the second positioning mechanism 21 further includes: a second positioning block 213.

The second positioning block 213 penetrates through the upper portion of the second positioning plate 211 and is fixedly connected with the second positioning plate 211, and the second positioning pin 212 is fixed at the upper end of the second positioning plate 211 through the second positioning block 213. The second positioning block 213 is provided to position and fix the two positioning pins 212.

In one possible design, referring to fig. 7, the second clamping assembly 2 further comprises: the second clamping shared mechanism 23; the second clamping shared mechanism 23 includes: a second cylinder 231 and a second pressing arm 232.

The second pressing arm 232 is rotatably connected to the second positioning plate 211 and is adapted to be located at an upper portion of the second positioning plate 211 when clamping the member to be clamped, and one end of the second pressing arm 232 is rotatably connected to the piston rod of the second cylinder 231 to provide a pressing force to the second pressing arm 232 so as to ensure that the second pressing arm 232 can be continuously and stably pressed against the member to be clamped.

The upper portion of the second cylinder 231 is fixedly connected to the second positioning plate 211, and the axis of the second cylinder 231 is parallel to the plane of the second positioning plate 211, that is, the second cylinder 231 is located at one side of the second positioning plate 211, so as to provide a pressing force for the second pressing arm 232, and ensure that the second pressing arm 232 can be continuously and stably pressed on the member to be clamped.

In one possible design, referring to fig. 8, the second clamping assembly 2 further comprises: a second clamping mechanism 22; the second clamping mechanism 22 includes a second common pressing block 221 and an auxiliary pressing block 222.

The second common pressing block 221 and the auxiliary pressing block 222 are both located at the other end of the second pressing arm 232 away from the second cylinder 231, and are both adapted to be in contact with the to-be-clamped member when the to-be-clamped member is clamped by the fixture, so as to realize pressing of the to-be-clamped member under the pressing force provided by the second cylinder 231.

In one possible design, referring to fig. 8, the second clamping mechanism 22 further includes: the second clamping block 223 shaped like an Chinese character 'gong' is positioned on one side of the second clamping arm 232 facing the second positioning plate 211; the second positioning plate 211 is provided with a second convex pressing block 224, the second convex pressing block 224 is positioned at the upper end of the second positioning plate 211, and the second clamping block 223 shaped like an I is suitable for being in contact with the second convex pressing block 224 when the clamp clamps a component to be clamped.

Through setting up second "worker" style of calligraphy compact heap 223 and the protruding type compact heap 224 of second to realize spacing to second pressure arm 232, prevent that second pressure arm 232 from taking place to rock in the use.

Based on the above structure, in a possible example, taking clamping the first board to be clamped 011 first and then clamping the second board to be clamped 021 as an example, the operation process of welding by using the clamp provided by the embodiment of the present application is described with reference to fig. 8 to 11:

referring to fig. 9, the first board to be clamped 011 is placed on the first positioning plate 111 and the second positioning plate 211, and the second positioning pin 212 and the common positioning pin 113 are made to penetrate through the first board to be clamped 011, so that the first board to be clamped 011 is fixed.

The second air cylinder 231 drives the second pressing arm 232 to move, so that the second pressing arm 232 is pressed on the first board to be clamped 011, and the first board to be clamped 011 is pressed.

According to the position of the auxiliary pressing block 222, the first elastic fixing seat 012 is placed on the first board 011 to be clamped, and a side of the first elastic fixing seat 012 is ensured to be tightly attached to a side of the auxiliary pressing block 222.

Referring to fig. 11, the handle 133 is grasped, and the first pressing arm 132 is pressed down toward the first elastic fixing seat 012, so that the common pressing pin 121 penetrates through the upper portion of the first elastic fixing seat 012, at this time, the rotating block 134 pushes the second rolling element 1351 of the communication valve 135, the air channel control system of the first clamping assembly 1 is communicated, and the first air cylinder 131 drives the first pressing arm 132 to press the first board to be clamped 011.

Referring to fig. 10, a second plate to be clamped 021 is placed on the first positioning plate 111 and the second positioning plate 211, and the first positioning pin 112 and the common positioning pin 113 are made to pass through the second plate to be clamped 021, so that the second plate to be clamped 021 is fixed.

The second air cylinder 231 drives the second pressing arm 232 to move, so that the second pressing arm 232 is pressed on the second to-be-clamped plate 021, and the second to-be-clamped plate 021 is pressed.

According to the position of the auxiliary pressing block 222, the second elastic fixing base 022 is placed on the second plate to be clamped 021, and one side of the second elastic fixing base 022 is ensured to be tightly attached to the side of the auxiliary pressing block 222.

Referring to fig. 12, the handle 133 is grasped, and the first pressing arm 132 is pressed toward the second elastic fixing base 022, so that the common pressing pin 121 penetrates into the upper portion of the second elastic fixing base 022, at this time, the rotating block 134 pushes the second rolling member 1351 of the communication valve 135, the air path control system of the first clamping assembly 1 is communicated, and the first air cylinder 131 drives the first pressing arm 132 to press the second plate to be clamped 021.

It can be understood that, the clamping and welding sequence of the clamp to the first to-be-clamped plate 011 and the second to-be-clamped plate 021 provided in the embodiment of the present application includes but is not limited to the above manner, that is, the clamp may clamp the second to-be-clamped plate 021 first and then clamp the first to-be-clamped plate 011.

The embodiment of the application also provides a welding method using the clamp according to the embodiment, and a flow chart of the method is shown in fig. 13. The method comprises the following steps.

Step 1301, referring to fig. 9, the first plate to be clamped 011 is placed on the first positioning plate 111 and the second positioning plate 211, and the second positioning pin 212 and the common positioning pin 113 are made to pass through the first plate to be clamped 011.

In step 1302, referring to fig. 11, the first elastic fixing seat 012 is placed on the first board 011 to be clamped, and the first elastic fixing seat 012 is connected with the first board 011 to be clamped by welding.

It can be understood that after the welding operation of the first board to be clamped 011 and the first elastic fixing seat 012 is finished, the first component to be welded 01 is removed.

At step 1203, referring to fig. 10, a second plate to be clamped 021 is placed on the first positioning plate 111 and the second positioning plate 211, and the first positioning pin 112 and the common positioning pin 113 penetrate through the second plate to be clamped 021.

In step 1304, referring to fig. 12, the second elastic fixing base 022 is placed on the second plate to be clamped 021, and the second elastic fixing base 022 is connected to the second plate to be clamped 021 by welding.

The welding method provided by the embodiment of the application can be used for clamping and fixing the first to-be-clamped plate in the first to-be-welded assembly and clamping and fixing the second to-be-clamped plate in the second to-be-welded assembly, and compared with the fact that each to-be-welded assembly needs to be correspondingly provided with one clamp in the related art, the production quantity of the clamps can be reduced, the manufacturing cost of the clamps is further reduced, and the automobile manufacturing cost is reduced.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only.

It will be understood that the present application is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A clamp, characterized in that it comprises: a first clamping assembly (1) and a second clamping assembly (2);

the first clamping assembly (1) comprises a first positioning mechanism (11) and a first clamping shared mechanism (13); the first positioning mechanism (11) comprises a first positioning plate (111), a first positioning pin (112), a common positioning pin (113), a common positioning block (114), a first positioning block (116), a lever valve positioning block (115) and a lever valve (117); the first positioning pin (112) is positioned at the upper part of the side (101) where the first plate surface of the first positioning plate (111) is positioned, the common positioning pin (113) is positioned at the upper part of the side (102) where the second plate surface of the first positioning plate (111) is positioned, and the side (101) where the first plate surface is positioned is opposite to the side (102) where the second plate surface is positioned; the common positioning block (114) is positioned on the side (102) where the second plate surface of the first positioning plate (111) is positioned and fixedly connected with the first positioning plate (111), and the common positioning pin (113) penetrates through the upper part of the common positioning block (114); the first positioning block (116) is located on the side (101) where the first plate surface of the first positioning plate (111) is located and fixedly connected with the first positioning plate (111), and the first positioning pin (112) penetrates through the upper portion of the first positioning block (116); the lever valve positioning block (115) is positioned at the upper parts of the first positioning plate (111) and the common positioning block (114) and is fixedly connected with the first positioning plate (111); the lever valve (117) is positioned on one side of the lever valve positioning block (115) far away from the first positioning plate (111), the lever valve (117) is fixedly connected with the lever valve positioning block (115), the lever valve (117) is positioned in an air path control system and is suitable for controlling connection or disconnection of the air path control system, and the air path control system is suitable for providing an air source for the first air cylinder (131) in a connection state; the lever valve (117) is in a normally open state, and a first rolling piece (1171) of the lever valve (117) is suitable for being pushed by a piece to be clamped when the clamp clamps the piece to be clamped and the installation dislocation exists, so that the lever valve (117) is in an off state to control the air circuit control system to be disconnected; the first clamping common mechanism (13) comprises a first air cylinder (131), a first pressing arm (132) and a handle (133); the upper part of the first cylinder (131) is fixedly connected with the first positioning plate (111), and the axis of the first cylinder (131) is parallel to the plane where the first positioning plate (111) is located; the first pressing arm (132) is rotatably connected with the first positioning plate (111), one end of the first pressing arm (132) is rotatably connected with a piston rod of the first air cylinder (131), and the first pressing arm (132) is suitable for pressing the to-be-clamped piece opposite to the upper end of the first positioning plate (111) when the to-be-clamped piece is clamped by the clamp; the handle (133) is positioned on the first pressing arm (132), and the extending direction of the handle (133) is perpendicular to the extending direction of the first pressing arm (132);

the second clamping assembly (2) comprises a second positioning mechanism (21); wherein the second positioning mechanism (21) comprises a second positioning plate (211) and a second positioning pin (212); the second positioning pin (212) is located at the upper end of the second positioning plate (211), and the extending direction of the first positioning pin (112), the extending direction of the common positioning pin (113) and the extending direction of the second positioning pin (212) are all parallel to the plane where the second positioning plate (211) is located and the plane where the first positioning plate (111) is located.

2. The clamp according to claim 1, characterized in that said first clamping sharing means (13) further comprise: a rotary block (134) and a communication valve (135);

the communication valve (135) is located on the side (101) where the first plate surface of the first positioning plate (111) is located, the communication valve (135) is fixedly connected with the first positioning plate (111), the communication valve (135) is located in an air path control system and is suitable for controlling connection or disconnection of the air path control system together with the lever valve (117), and the communication valve (135) is in a normally closed state;

the rotating block (134) is fixed on the first pressing arm (132) and is rotatably connected with the first positioning plate (111); the rotating block (134) is suitable for pushing a second rolling piece (1351) of the communication valve (135) when the clamp clamps the piece to be clamped and the piece to be clamped is installed correctly, so that the communication valve (135) and the lever valve (117) are both in an opening state to control the communication of the air channel control system.

3. The clamp according to claim 2, characterized in that said first clamping assembly (1) further comprises: a first clamping mechanism (12);

the first clamping mechanism (12) comprises: a common hold-down pin (121), a first common hold-down block (122), a first hold-down block (123); the first pressing block (123) and the first common pressing block (122) are oppositely arranged at the other end, away from the first air cylinder (131), of the first pressing arm (132); the common hold-down pin (121) is located on the first common hold-down block (122) and is adapted to cooperate with the common positioning pin (113) when the clamp is holding a member to be clamped.

4. The clamp according to claim 1, characterized in that said second positioning mechanism (21) further comprises: a second positioning block (213);

the second positioning block (213) is located at the upper part of the second positioning plate (211) and is fixedly connected with the second positioning plate (211), and the second positioning pin (212) penetrates through the second positioning block (213) and is fixed at the upper end of the second positioning plate (211).

5. The clamp according to claim 1, characterized in that said second clamping assembly (2) further comprises: a second clamping common mechanism (23);

the second clamping shared mechanism (23) includes: a second cylinder (231) and a second pressing arm (232); the second pressing arm (232) is rotatably connected with the second positioning plate (211) and is suitable for being positioned at the upper part of the second positioning plate (211) when clamping a piece to be clamped; one end of the second pressing arm (232) is rotatably connected with a piston rod of the second air cylinder (231); the upper part of the second cylinder (231) is fixedly connected with the second positioning plate (211), and the axis of the second cylinder (231) is parallel to the plane where the second positioning plate (211) is located.

6. The clamp according to claim 5, characterized in that said second clamping assembly (2) further comprises: a second clamping mechanism (22);

the second clamping mechanism (22) comprises a second common pressing block (221) and an auxiliary pressing block (222); the second common pressing block (221) and the auxiliary pressing block (222) are both located at the other end, away from the second air cylinder (231), of the second pressing arm (232) and are both suitable for being in contact with a piece to be clamped when the clamp clamps the piece to be clamped.

7. A welding method, characterized in that the method uses a fixture according to any one of claims 1-6, the method comprising:

placing a first plate to be clamped (011) on the first positioning plate (111) and the second positioning plate (211) and making the second positioning pin (212) and the common positioning pin (113) pass through the first plate to be clamped (011);

placing a first elastic fixing seat (012) on the first board (011) to be clamped, and connecting the first elastic fixing seat (012) with the first board (011) to be clamped through welding;

placing a second plate to be clamped (021) on the first positioning plate (111) and the second positioning plate (211) and enabling the first positioning pin (112) and the common positioning pin (113) to penetrate through the second plate to be clamped (021);

placing a second elastic fixing seat (022) on the second plate to be clamped (021), and connecting the second elastic fixing seat (022) with the second plate to be clamped (021) through welding.