Welding jig and welding device

Abstract

The utility model discloses a welding jig and a welding device, the welding jig comprises a base, a clamping assembly, a locking block and a first driving piece, the clamping assembly is used for clamping a workpiece and detachably connected to the base, the locking block is movably arranged on the base and used for locking the workpiece on the base, and the first driving piece is used for driving the locking block to move. According to the technical scheme, a workpiece can be primarily positioned on the clamping assembly before being welded. After positioning is completed, the workpiece and the clamping assembly can be installed on the base together and locked by a first driving piece and a locking block which are arranged on the base. After the workpiece is welded, an operator can drive the locking block to release the workpiece through the first driving piece without waiting for cooling of the workpiece. After the workpiece is released, an operator can replace an old clamping assembly with the clamping assembly which completes clamping in advance. Therefore, the positioning procedure of the workpiece on the base before welding and the cooling waiting time after welding are omitted, and the welding efficiency of the workpiece is improved.

Description

Technical Field

[0001] The present application relates to the field of welding technology, and in particular to a welding jig and a welding device. Background Art

[0002] Welding is a commonly used technical means in manufacturing. It mainly combines two or more workpieces by heating or pressurizing to produce the desired product. Taking the mobile phone industry as an example, mobile phone manufacturing has always pursued the characteristics of light, thin, excellent heat dissipation and high strength of the fuselage. When choosing the material of the mobile phone fuselage frame, aluminum alloy is favored because of its light density and good heat dissipation, and its price is relatively low. However, the strength and hardness of aluminum alloy are low, and it is easy to be damaged when it is bumped by external force, and its ability to protect the internal parts of the fuselage is weak. On the contrary, although titanium alloy has higher strength and hardness, it has high density, poor heat dissipation and is expensive.

[0003] Therefore, in order to take into account the thin and light characteristics of mobile phones, good heat dissipation and high strength requirements, more and more mobile phone frames are designed in the form of titanium-aluminum alloy frames wrapped with aluminum alloy middle plates; this combination not only ensures that the mobile phone body shell has high strength and hardness, but also achieves the thinness and excellent heat dissipation performance of the body. In order to realize the manufacture of this combination of materials, it is necessary to use a welding device to weld the titanium-aluminum alloy frame and the aluminum alloy middle plate.

[0004] The titanium-aluminum alloy frame and the aluminum alloy middle plate need to be clamped before welding. In the relevant technology, bolts are usually used as welding jigs, and the titanium-aluminum alloy frame and the aluminum alloy middle plate are clamped on the welding table by manually tightening the threaded parts. This method not only has poor positioning accuracy, but also has a high temperature of the product after welding. In order to avoid burns when taking out the material, the operator needs to wait for the product to cool down before removing the product from the welding table, which has low welding efficiency. Utility Model Content

[0005] The purpose of the present application is to provide a welding jig and a welding device, aiming to solve the problem of poor welding efficiency of the welding jig in the related art.

[0006] To achieve the purpose of the present application, in a first aspect, the present application provides a welding jig, comprising:

[0007] Pedestal;

[0008] A clamping assembly, the clamping assembly is used to clamp a workpiece, and the clamping assembly is detachably connected to the base;

[0009] A locking block, the locking block is movably arranged on the base, and the locking block is used to lock the workpiece on the base;

[0010] A first driving member, wherein the first driving member is used to drive the locking block to move.

[0011] In a possible implementation, one of the base and the clamping assembly is provided with a first positioning pin, and the other is provided with a first positioning hole;

[0012] The first positioning pin extends into the first positioning hole so that the clamping assembly is detachably connected to the base.

[0013] In a possible implementation, the clamping assembly includes a clamping seat and a second positioning pin, the clamping seat has a positioning surface, and the second positioning pin is arranged on the positioning surface;

[0014] The second positioning pin is used to cooperate with the second positioning hole of the workpiece to position the workpiece on the positioning surface.

[0015] In a possible implementation, the clamping assembly further includes a plurality of limit blocks, and among the plurality of limit blocks, at least two limit blocks are spaced apart from each other on the positioning surface along a width direction of the clamping seat.

[0016] In a possible implementation, at least part of the limit blocks is provided with a first mounting hole with an opening on one side; and the clamping assembly further includes:

[0017] A first elastic member, wherein the first elastic member is disposed in the first mounting hole;

[0018] A clamping member is movably disposed in the first mounting hole, one end of the clamping member contacts the first elastic member, and the other end of the clamping member is used to extend out of the first mounting hole from the opening and contact the workpiece.

[0019] In a possible implementation, the clamping member is a sphere, and the sphere is rollingly disposed in the first mounting hole.

[0020] In a possible implementation, the clamping assembly further includes a gripping portion, one end of which is connected to the clamping seat, and the other end of which extends out of an edge of the clamping seat.

[0021] In a possible implementation, a plurality of weight-reducing grooves are provided on the clamping seat.

[0022] In a possible implementation, the clamping seat is provided with a first through hole, and the welding fixture further includes a material taking component, and the material taking component includes:

[0023] Reclaiming seat;

[0024] A first push post is disposed on the material picking seat, and is used to pass through the first through hole to push the workpiece to separate from the positioning surface.

[0025] In a possible implementation, the material taking seat is provided with a second mounting hole, and the material taking assembly further includes:

[0026] a second elastic member, wherein the second elastic member is disposed in the second mounting hole;

[0027] A second push column, wherein the second push column is disposed in the second mounting hole, one end of the second push column is connected to the second elastic member, and the other end is used to extend out of the second mounting hole to contact the clamping assembly.

[0028] In a possible implementation, the material taking assembly further includes a plurality of guide blocks, each of which is arranged at intervals along the outer edge of the material taking seat;

[0029] The guide block is provided with a guide surface, and the guide surface is used to contact the outer edge of the clamping seat when the clamping seat is close to the material taking seat.

[0030] In a possible implementation, the base is provided with a second through hole, and the welding jig further includes:

[0031] A top column, the top column is movably disposed in the second through hole, and the top column is used to contact the clamping assembly to push the clamping assembly to separate from the base;

[0032] A second driving member is disposed on the base, and is used for driving the top column to move.

[0033] In a second aspect, the present application further provides a welding device, the welding device comprising a welding jig, the welding jig comprising:

[0034] Pedestal;

[0035] A clamping assembly, the clamping assembly is used to clamp a workpiece, and the clamping assembly is detachably connected to the base;

[0036] A locking block, the locking block is movably disposed on the base, and the locking block is used to lock the workpiece on the base;

[0037] A first driving member, wherein the first driving member is used to drive the locking block to move.

[0038] The technical solution of the present application uses a first driving member and a locking block to lock the workpiece on the base instead of manually tightening the screws, and clamps the workpiece through a clamping assembly detachably connected to the base. Before welding, the workpiece can be initially positioned on the clamping assembly. After positioning, the workpiece can be installed on the base together with the clamping assembly, and locked by the first driving member and the locking block provided on the base. When the workpiece is welded, the operator can release the workpiece by driving the locking block through the first driving member without waiting for the workpiece to cool down. After the workpiece is released, the operator can replace the old clamping assembly and the welded workpiece with the pre-clamped clamping assembly and the workpiece to be welded. In this way, the positioning process of the workpiece on the base before welding and the cooling waiting time after welding are omitted, thereby improving the welding efficiency of the workpiece and the utilization rate of the welding jig. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 This is a structural schematic diagram of an embodiment of a welding workpiece of the present application;

[0041] Figure 2 A schematic diagram of the three-dimensional structure of an embodiment of the welding jig provided in the present application;

[0042] Figure 3 for Figure 2 Schematic diagram of the assembly of the clamping assembly and the workpiece;

[0043] Figure 4 for Figure 3 A schematic diagram of the three-dimensional structure of the middle clamping assembly;

[0044] Figure 5 for Figure 3 A magnified view at point A;

[0045] Figure 6 for Figure 4 A cross-sectional view at the limit block;

[0046] Figure 7 for Figure 2 A schematic diagram of the three-dimensional structure of the welding fixture after the clamping assembly is taken out;

[0047] Figure 8 for Figure 2 A schematic diagram of the assembly of the first driving member and the locking block;

[0048] Fig. 9 for Figure 7 A schematic diagram of the structure of the middle top column and the second driving member;

[0049] Fig.10 A structural schematic diagram of an embodiment of a material taking component of a welding jig provided in the present application;

[0050] Fig.11 for Fig.10 A cross-sectional view of

[0051] Fig.12 This is a schematic structural diagram of an embodiment of a pressing device for a welding jig provided in the present application.

[0052] Description of reference numerals:

[0053] 100-Welding jig;

[0054] 1-base, 11-second through hole;

[0055] 2-clamping assembly, 21-clamping seat, 211-first positioning hole, 212-first through hole, 213-weight reduction groove, 22-second positioning pin, 23-limiting block, 24-first mounting hole, 25-first elastic member, 26-clamping member, 27-gripping portion;

[0056] 3-locking block;

[0057] 4- first driving member;

[0058] 5- material picking assembly, 51- material picking seat, 511- second mounting hole, 52- first push column, 53- second elastic member, 54- second push column, 55- guide block;

[0059] 6-Top column;

[0060] 7- second driving member;

[0061] 8-pressing device, 81-pressing machine, 811-pressing table, 812-pressing mold, 82-pressing fixture;

[0062] 9-air valve;

[0063] 10- first positioning pin;

[0064] 200-workpiece, 210-titanium-aluminum alloy frame, 220-aluminum alloy middle plate. DETAILED DESCRIPTION

[0065] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0066] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0067] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this application and in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this application includes any and all combinations of one or more of the related listed items.

[0068] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0069] The present application proposes a welding device, which is used for welding workpieces. The workpieces welded by the welding device can be metal parts or circuit boards, and the present application does not impose any restrictions on this. Taking the mobile phone industry as an example, in the mobile phone manufacturing industry, lightness, thinness, good heat dissipation, and high strength and hardness of mobile phones have always been the eternal pursuit goals. In the selection of materials for the body frame of mobile phones, aluminum alloy has a lighter density, better heat dissipation, and a low price. However, due to the low strength and hardness of aluminum alloy, it is easy to cause three injuries when it is bumped, and the protection ability of the internal parts of the body is poor; titanium alloy has higher strength and hardness, but higher density, poor heat dissipation and high price.

[0070] Please refer to Figure 1 In order to take into account the thin and light characteristics of mobile phones, good heat dissipation and high strength requirements, more and more mobile phone frames are designed in the form of titanium aluminum alloy frame 210 wrapped with aluminum alloy middle plate 220; this combination not only ensures that the mobile phone body shell has high strength and hardness, but also achieves the thinness and excellent heat dissipation performance of the body. In order to realize the manufacture of this combined material, it is necessary to use a welding device to weld the titanium aluminum alloy frame 210 and the aluminum alloy middle plate 220.

[0071] The welding device includes a welding gun, a welding table and a welding jig. The welding gun is used to generate high temperature and make the workpieces to be welded (i.e., the titanium-aluminum alloy frame and the aluminum alloy middle plate mentioned above) melt and connect with each other. The welding gun can be a laser welding gun, a gas welding gun, or an electric welding gun, which is not limited in this application. The workpieces to be welded can be melted directly under the action of the welding gun, or after the welding wire is filled in, the welding wire can be used to form a weld to assist melting, which is not limited in this application.

[0072] The welding table is used to support the workpiece to be welded, thereby providing a stable working environment for the welding gun to weld the workpiece and improving the stability of the workpiece to be welded during the welding process.

[0073] The welding jig is used to fix the workpiece to be welded on the welding table, so as to ensure the stability of the workpiece clamping. In the related technology, bolts are usually used as welding jigs, and the titanium aluminum alloy frame and the aluminum alloy middle plate are positioned on the welding table by manually tightening the threaded parts. This method not only has poor positioning accuracy, but also the temperature of the product after welding is high. In order to avoid burns when taking out the material, the operator needs to wait for the product to cool down before removing the product from the welding table, which has low welding efficiency.

[0074] Please refer to Figure 2 To solve the above problems, in the present application, the welding jig 100 includes a base 1, a clamping assembly 2, a locking block 3 and a first driving member 4. The clamping assembly 2 is used to clamp the workpiece 200. The clamping assembly 2 is detachably connected to the base 1. The locking block 3 is movably arranged on the base 1. The locking block 3 is used to lock the workpiece 200 on the base 1. The first driving member 4 is used to drive the locking block 3 to move. The technical solution of the present application clamps the workpiece 200 by the clamping assembly 2 detachably connected to the base 1, and the workpiece 200 on the base 1 is locked by the first driving member 4 and the locking block 3 instead of manually tightening the screws. Before welding, the workpiece 200 can be initially positioned on the clamping assembly 2. After positioning, the workpiece 200 can be installed on the base 1 together with the clamping assembly 2, and locked by the first driving member 4 and the locking block 3 arranged on the base 1. After the workpiece 200 is welded, the operator can drive the locking block 3 to release the workpiece 200 through the first driving member 4 without waiting for the workpiece 200 to cool down. After the workpiece 200 is released, the operator can use the pre-clamped clamping assembly 2 and the workpiece 200 to be welded to replace the old clamping assembly 2 and the welded workpiece 200. In this way, the positioning process of the workpiece 200 on the base 1 before welding and the cooling waiting time after welding are omitted, thereby improving the welding efficiency of the workpiece 200 and the utilization rate of the welding jig 100.

[0075] Hereinafter, the welding jig 100 provided in the present application will be described in detail with reference to the accompanying drawings.

[0076] The welding jig 100 includes a base 1, which serves as the main body of the welding jig 100 and is used to support and connect the various parts of the welding jig 100. The base 1 is connected to the welding table, and the base 1 and the welding table can be connected by welding, threaded connection, or magnetic connection, which is not limited in the present application.

[0077] Please refer to Figure 3 and Figure 4 The welding jig 100 also includes a clamping assembly 2, which is used to position the workpiece 200 before welding. The clamping assembly 2 and the base 1 are both detachably connected. In actual applications, before welding begins, the workpiece 200 will be pre-installed on the clamping assembly 2 and initially positioned on the clamping assembly 2. At this time, the titanium aluminum alloy frame 210 and the aluminum alloy middle plate 220, which are the workpieces 200 to be welded, will be brought closer to each other under the action of the clamping assembly 2 to facilitate subsequent welding.

[0078] At the same time, in order to improve the welding efficiency of the workpiece 200 on the welding jig, the welding jig 100 often includes a plurality of clamping assemblies 2, each of which is pre-installed with the workpiece 200 to be welded. After each workpiece 200 is clamped, the operator will take one of the clamping assemblies 2 and load it on the base 1, and start the welding gun to start welding. After the welding of the workpiece 200 on the clamping assembly 2 is completed, the clamping assembly 2 can be removed from the base 1 and replaced with a new clamping assembly 2 and a new workpiece 200 to be welded. The whole process eliminates the positioning and installation of the workpiece 200 to be welded on the base 1. Therefore, the interval time waiting for welding between adjacent workpieces 200 to be welded is shorter, the welding speed is faster, and the utilization efficiency of the welding jig 100 is higher.

[0079] The clamping assembly 2 includes a clamping seat 21, which serves as the main body of the clamping assembly 2 and is used to support and connect other structures of the clamping assembly 2. The clamping seat 21 is detachably connected to the base 1. There are many ways to connect the clamping seat 21 to the base 1. The clamping seat 21 can be detachably connected to the base 1 by magnetic attraction, or by other locking structures.

[0080] In one embodiment of the present application, one of the base 1 and the clamping assembly 2 is provided with a first positioning pin 10, and the other is provided with a first positioning hole 211. For ease of description, illustratively, the clamping seat 21 is provided with a first positioning hole 211, and the base 1 is provided with a first positioning pin 10, and the first positioning pin 10 extends into the first positioning hole 211, so that the clamping assembly 2 and the base 1 can be detachably connected. Compared with other detachable connection methods, the first positioning hole 211 and the first positioning pin 10 have a simple structure, which can not only meet the use requirements that the clamping assembly 2 and the base 1 need to be able to be quickly disassembled, but also reduce the production requirements of the welding fixture 100, saving costs.

[0081] The workpiece 200 is fixed on the clamping seat 21. There are many ways to position the workpiece 200 on the clamping seat 21. The workpiece 200 can be fixed on the clamping seat 21 by bonding or by screwing, and the present application does not limit this. In one embodiment of the present application, the clamping seat 21 has a positioning surface, and a second positioning pin 22 is provided on the positioning surface. The second positioning pin 22 is used to cooperate with the second positioning hole provided on the workpiece 200 to be welded, so as to position the workpiece 200 to be welded on the clamping seat 21. Compared with other positioning methods, the provision of the second positioning pin 22 can not only meet the positioning requirements of the workpiece 200 to be welded on the clamping assembly 2, but also facilitate the disassembly of the workpiece 200, thereby improving the clamping efficiency of the clamping assembly.

[0082] It can be understood that in addition to setting a second positioning pin 22 on the positioning surface, in other possible embodiments of the present application, a positioning hole can also be set on the positioning surface, and a positioning pin can be set on the workpiece 200 to be welded, which can also achieve the positioning of the workpiece 200 on the clamping seat 21. The present application does not impose any restrictions on this.

[0083] A plurality of weight-reducing grooves 213 are provided on the clamping seat 21, and the shock-absorbing grooves penetrate the entire clamping seat 21 along the thickness direction of the clamping seat 21, so as to reduce the weight of the entire clamping seat 21, thereby reducing the weight of the clamping assembly 2, reducing the difficulty for the operator to pick up the clamping assembly 2, and improving the assembly efficiency of the clamping assembly 2 on the base 1.

[0084] The clamping assembly 2 also includes a gripping portion 27, one end of which is connected to the clamping seat 21, and the other end of which extends out of the edge of the clamping seat 21. The gripping portion 27 is used to provide a force point for the operator to grip the clamping assembly 2. Through the gripping portion 27, the operator can more conveniently adjust the position and angle of the clamping assembly 2, thereby reducing the difficulty of assembling the workpiece 200 on the clamping assembly 2 and the clamping assembly 2 on the base 1, and improving the assembly efficiency of the welding jig 100.

[0085] The clamping assembly 2 further includes a plurality of limit blocks 23, among which at least two limit blocks 23 are arranged at intervals on the positioning surface along the width direction of the clamping seat 21, and the workpiece 200 is clamped between the two limit blocks 23. The limit blocks 23 are used to provide the workpiece 200 with a limit along the width direction of the clamping seat 21, so as to improve the positioning accuracy of the welding fixture 100 for the workpiece 200, reduce the possibility of the workpiece 200 shaking during the welding process, and improve the welding effect of the welding device.

[0086] Please refer to Figure 5 and Figure 6The clamping assembly 2 further includes a first elastic member 25 and a clamping member 26, which are used to adjust the distance between the limit blocks 23 so that the limit blocks 23 can clamp workpieces 200 of different widths, thereby improving the versatility of the clamping assembly 2. Specifically, in one embodiment of the present application, at least part of the limit blocks 23 are provided with a first mounting hole 24 with an opening on one side, and the first elastic member 25 is arranged in the first mounting hole 24. The first elastic member 25 can be a spring, a disc spring, or other materials capable of elastic deformation, which is not limited in the present application. The first elastic member 25 is used to elastically deform when subjected to external force, and to provide the necessary elasticity and restoring force for the clamping member 26 to clamp the workpiece 200. The clamping member 26 is movably arranged in the first mounting hole 24, and one end of the clamping member 26 is in contact with the first elastic member 25. When subjected to external force, it can push the first elastic member 25 to deform. The other end of the clamping member 26 is used to extend out of the first mounting hole 24 from the opening and contact the workpiece 200 .

[0087] In practical applications, when the workpiece 200 is placed between the limit blocks 23, the workpiece 200 will first contact the push member. As the workpiece 200 moves into the inside of the clamping assembly 2, the workpiece 200 will push the push member to move into the first mounting hole 24, thereby compressing the first elastic member 25. This design allows the clamping assembly 2 to adaptively adjust the clamping force according to the width of the workpiece 200. When the width of the workpiece 200 is small, the thrust of the workpiece 200 on the push member is also small. In this case, the first elastic member 25 will only be slightly compressed, and the push member can obtain a longer extension length, thereby ensuring that the workpiece 200 is stably clamped. When the width of the workpiece 200 is large, the thrust of the workpiece 200 on the push member will also increase accordingly. At this time, the first elastic member 25 will be more compressed, and the length of the push member extending will be reduced accordingly. In this way, the clamping assembly 2 can adaptively adjust the distance between the limit blocks 23 according to the different widths of the workpiece 200, thereby reducing the influence of the machining error on the installation of the workpiece 200 and improving the versatility and machining accuracy of the clamping assembly 2.

[0088] It can be understood that in the above embodiment, the first elastic member 25 and the clamping member 26 can be separately arranged on the limit blocks 23 on both sides of the clamping seat 21, or can be only arranged on the limit block 23 on one side of the clamping seat 21, and the present application does not impose any restrictions on this.

[0089] The shape of the clamping member 26 can be rectangular, square, or cylindrical, and the present application does not limit this. In one embodiment of the present application, the clamping member 26 is a sphere, and the sphere is arranged in a rolling manner in the first mounting hole 24. The aperture of the first mounting hole 24 is smaller than the diameter of the sphere, so that the sphere can partially protrude from the first mounting hole 24 under the push of the first elastic member 25, but will not fall out of the first mounting hole 24. When the workpiece 200 is placed in the clamping assembly 2, the workpiece 200 will contact with this protruding portion, pushing the sphere to move into the first mounting hole 24. In the process of the sphere moving to the first mounting hole 24, since the contact between the sphere and the workpiece 200 is a rolling contact, rolling friction will be generated between them. Compared with sliding friction, the resistance of rolling friction is smaller, the possibility of the push member scratching the workpiece 200 is smaller, and the workpiece 200 is loaded into the limit block 23 more smoothly, which effectively improves the clamping efficiency of the clamping assembly 2 for the workpiece 200.

[0090] Please refer to Figure 7 and Figure 8 The welding jig 100 also includes a locking block 3, which is movably arranged on the base 1. The locking block 3 is used to lock the workpiece 200 on the clamping assembly 2 after the clamping assembly 2 is installed on the base 1. The purpose of the locking is to prevent the workpiece 200 from shaking during the welding process, thereby causing the welding device to have a cold weld or a wrong weld, affecting the welding accuracy. The shape of the locking block 3 can be rectangular, square, or other regular or irregular shapes, and this application does not limit this.

[0091] The material of the locking block 3 can be iron, aluminum, or plastic, and this application does not limit this. In one embodiment of the present application, the material of the locking block 3 is a composite material of aluminum and polyurethane. This composite material combines the respective advantages of aluminum and polyurethane to achieve better performance. Aluminum, as the main structural material, is used to provide the strength and hardness of the locking block 3, thereby improving the locking ability of the locking block 3 for the workpiece 200. At the same time, the lightweight characteristics of aluminum also make the locking block 3 more lightweight, easy to operate and use. Polyurethane is embedded in the aluminum structure as a filling material to ensure that the locking block 3 can fit tightly with the surface of the workpiece 200. Polyurethane has excellent elasticity and toughness, can provide sufficient buffering and sealing effects during the locking process, and ensure a tight connection between the locking block 3 and the workpiece 200. In addition, polyurethane also has good wear resistance and corrosion resistance, which can protect the aluminum structure from erosion and damage by the external environment.

[0092] The number of locking blocks 3 can be one, two, or more. When there is one locking block 3, the locking block 3 can cooperate with the fixed locking platform on the base 1 to lock the workpiece 200 on the base 1. When there are two locking blocks 3, the two locking blocks 3 can be arranged at intervals along the width direction of the base 1 or along the length direction of the base 1. The two locking blocks 3 can also lock the workpiece 200 on the base 1 by moving closer to or away from each other.

[0093] Exemplarily, in one embodiment of the present application, the locking block 3 includes two first locking blocks 3 and two second locking blocks 3, and the two first locking blocks 3 are spaced apart along the length direction of the base 1. The two second locking blocks 3 are spaced apart along the width direction of the base 1. The workpiece 200 is positioned between the two first locking blocks 3 and the two second locking blocks 3 through the clamping assembly 2. The two first locking blocks 3 and the two second locking blocks 3 can achieve locking and release of the workpiece 200 on the base 1 by moving closer to or away from each other, thereby improving the stability of the workpiece 200 set on the base 1.

[0094] The first driving member 4 can be a motor or a cylinder, and the present application does not limit this. In one embodiment of the present application, the first driving member 4 is a cylinder, the cylinder seat of the cylinder is fixed to the base 1, and the piston rod of the cylinder is connected to the locking block 3. An air valve 9 is provided on the base 1, and the operator can adjust the air pressure change inside the cylinder by controlling the switch state of the air valve 9, thereby controlling the telescopic movement of the piston rod and controlling the locking and release of the locking block 3 for the workpiece 200. Compared with other positioning methods, such as using a threaded member to lock the workpiece 200, the method of the cylinder driving the locking block 3 to lock the workpiece 200 can, on the one hand, effectively avoid the problem of the threaded member not being screwed in place, thereby ensuring the accuracy of the clamping of the workpiece 200, and preventing the possibility of a cold weld or a poor welding of the welding device caused by the offset of the clamping. On the other hand, in the related art, bolts are usually used as welding jigs, and the workpiece is clamped on the welding table by manually tightening the threaded member. After welding, the temperature of the product and the welding table will rise. To avoid burns, the operator usually needs to wait for the product to cool down before removing the product from the welding table after welding is completed, which reduces the welding efficiency. However, the present embodiment omits the step of manually tightening the screws, which not only reduces the difficulty of operation and the labor intensity of the operator, but also saves the time of waiting for the workpiece 200 to cool down, shortens the interval time of welding between adjacent workpieces 200 to be welded, and improves the utilization efficiency of the workpiece 200 for the welding device.

[0095] Please refer to Figure 7 and Fig. 9In order to facilitate the operator to remove the clamping assembly 2 from the base 1 after the welding of the workpiece 200 is completed, the welding jig 100 also includes a top column 6 and a second driving member 7. The top column 6 is movably arranged on the base 1. The top column 6 is used to push the clamping assembly 2 to separate from the base 1 after the welding of the workpiece 200 is completed. The second driving member 7 is arranged on the base 1 and is used to drive the top column 6 to move. The second driving member 7 can be a motor or a cylinder, and the present application does not impose any restrictions on this.

[0096] Specifically, the base 1 is provided with a mounting surface, and the clamping assembly 2 is arranged on the mounting surface. A second through hole 11 is provided on the mounting surface, and the top column 6 is movably arranged in the second through hole 11. Before welding begins, the top column 6 is hidden in the second through hole 11 to avoid interfering with the normal operation of the clamping assembly 2. When the welding of the workpiece 200 is completed, the second driving member 7 starts to work and drives the top column 6 to extend out of the mounting surface along the direction of the second through hole 11. In the process of extending the top column 6 out of the mounting surface, the top column 6 will contact the clamping assembly 2 arranged on the mounting surface, and gradually push the clamping assembly 2 to separate from the base 1. In this way, the operator can easily remove the clamping assembly 2 from the base 1, thereby improving the disassembly efficiency of the clamping assembly 2 on the base 1, shortening the welding interval time between adjacent workpieces 200 to be welded, and improving the utilization efficiency of the welding jig 100.

[0097] Please refer to Fig.10 and Fig.11 The welding jig 100 also includes a material picking assembly 5, which is used to take the workpiece 200 out of the clamping assembly 2 after the workpiece 200 is welded. The material picking assembly 5 includes a material picking seat 51 and a first push column 52. The material picking seat 51 is the main body of the material picking assembly 5, and is used to support and connect the various component structures of the material picking assembly 5. The first push column 52 is arranged on the material picking seat 51, and the first push column 52 is used to push the workpiece 200 to separate from the clamping seat 21. Specifically, the clamping seat 21 is provided with a first through hole 212, and the position of the first through hole 212 on the clamping seat 21 is arranged in a one-to-one correspondence with the position of the first push column 52 on the material picking seat 51. When the welding of the workpiece 200 is completed and the clamping assembly 2 is removed from the base 1, the operator can hold the material picking seat 51 close to the clamping seat 21. When the material picking seat 51 approaches the clamping seat 21, the first push post 52 provided on the material picking seat 51 can be aligned with the first through hole 212 and extend into the first through hole 212. As the first push post 52 moves in the first through hole 212, the first push post 52 will begin to contact the workpiece 200 and apply a push force to separate the workpiece 200 from the clamping seat 21. In this way, the operator can easily remove the workpiece 200 from the clamping assembly 2, thereby shortening the disassembly time of the workpiece 200 on the clamping assembly 2, improving the disassembly efficiency of the workpiece 200 on the clamping assembly 2, and improving the utilization efficiency of the workpiece 200 for the clamping assembly 2.

[0098] In one embodiment of the present application, the material picking seat 51 is provided with a second mounting hole 511, and the material picking assembly 5 further includes a second elastic member 53 and a second push column 54, the second elastic member 53 is provided in the second mounting hole 511, the second push column 54 is provided in the second mounting hole 511, one end of the second push column 54 is connected to the second elastic member 53, and the other end is used to extend out of the second mounting hole 511 to contact with the clamping assembly 2. In a specific application, when the operator holds the material picking seat 51 close to the clamping seat 21 to remove the workpiece 200, the second push column 54 will first contact with the clamping seat 21. As the material picking seat 51 approaches further, the second push column 54 will be compressed and pushed into the second mounting hole 511, while compressing the second elastic member 53. When the first push column 52 successfully pushes the workpiece 200 from the clamping seat 21 and the external force that causes the material picking seat 51 and the clamping seat 21 to approach each other is removed, the second push column 54 will quickly return to its original position under the action of the restoring force of the second elastic member 53, and push the material picking seat 51 and the clamping seat 21 to quickly separate, thereby shortening the material picking efficiency of the material picking component 5 for the clamping component 2 and improving the welding efficiency of the welding jig 100 for the workpiece 200.

[0099] The material picking assembly 5 further includes a plurality of guide blocks 55, each of which is arranged at intervals along the outer edge of the material picking seat 51; the guide blocks 55 are provided with guide surfaces, which are used to contact the outer edge of the clamping seat 21 when the clamping seat 21 approaches the material picking seat 51. In this way, a guide is provided for the material picking seat 51 and the clamping seat 21 to approach, the difficulty of aligning the first push column 52 with the first through hole 212 is reduced, the disassembly efficiency of the material picking assembly 5 for the workpiece 200 is improved, and the welding efficiency of the welding fixture 100 for the workpiece 200 is improved.

[0100] Please refer to Fig.12 In order to improve the installation accuracy of the workpiece 200 on the clamping seat 21, in one embodiment of the present application, the welding fixture 100 also includes a pressing device 8, and the pressing device 8 includes a pressing machine 81 and a pressing fixture 82. The pressing machine 81 includes a pressing table 811 and a pressing mold 812, and the clamping assembly 2 is fixed on the pressing table 811 by the pressing fixture 82. The pressing mold 812 is used to press the workpiece 200 and the clamping assembly 2 on the pressing table 811, so as to ensure that the workpiece 200 can be closely fitted with the clamping seat 21 along the thickness direction of the clamping assembly 2. In this way, not only can the installation accuracy between the workpiece 200 and the clamping assembly 2 be effectively improved, but also the stability of the workpiece 200 on the clamping assembly 2 can be improved, the possibility of false welding and wrong welding of the workpiece 200 in the subsequent welding steps can be reduced, and the welding effect of the welding device on the workpiece 200 can be improved.

[0101] Hereinafter, the method for positioning the workpiece 200 by the welding fixture 100 provided in the present application will be described in detail with reference to the accompanying drawings.

[0102] The method for positioning the welding fixture 100 on the workpiece 200 includes the following steps:

[0103] S10 , clamp the workpiece 200 to be welded on the clamping assembly 2 by means of the first positioning pin 10 , the limit block 23 and the clamping member 26 on the clamping assembly 2 .

[0104] S20 , installing the clamping assembly 2 on the pressing platform 811 of the pressing device 8 through the pressing fixture 82 , and pressing the clamping assembly 2 and the workpiece 200 through the pressing mold 812 of the pressing device 8 .

[0105] S30 , installing the clamping assembly 2 on the base 1 , controlling the air valve 9 , and driving the locking member to lock the workpiece 200 on the base 1 .

[0106] S40 , after the welding is completed, the air valve 9 is controlled to drive the locking member to unlock the workpiece 200 , and the clamping assembly 2 is removed from the base 1 .

[0107] S50, controlling the first push post 52 of the material picking assembly 5 to pass through the first through hole 212, and using the first push post 52 to push the workpiece 200 away from the material picking assembly 5, thereby completing the material picking.

[0108] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0109] What is disclosed above is only a preferred embodiment of the present application, and it certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiment and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A welding jig, characterized in that: include: Pedestal; A clamping assembly, the clamping assembly is used to clamp a workpiece, and the clamping assembly is detachably connected to the base; A locking block, the locking block is movably arranged on the base, and the locking block is used to lock the workpiece on the base; A first driving member, wherein the first driving member is used to drive the locking block to move.

2. The welding jig according to claim 1, characterized in that: One of the base and the clamping assembly is provided with a first positioning pin, and the other is provided with a first positioning hole; The first positioning pin extends into the first positioning hole so that the clamping assembly is detachably connected to the base.

3. The welding jig according to claim 1, characterized in that: The clamping assembly comprises a clamping seat and a second positioning pin, the clamping seat has a positioning surface, and the second positioning pin is arranged on the positioning surface; The second positioning pin is used to cooperate with the second positioning hole of the workpiece to position the workpiece on the positioning surface.

4. The welding jig according to claim 3, characterized in that: The clamping assembly further includes a plurality of limit blocks, among which at least two limit blocks are arranged on the positioning surface at intervals along the width direction of the clamping seat.

5. The welding jig according to claim 4, characterized in that: At least part of the limit blocks are provided with a first mounting hole with an opening on one side; the clamping assembly further comprises: A first elastic member, wherein the first elastic member is disposed in the first mounting hole; A clamping member is movably disposed in the first mounting hole, one end of the clamping member contacts the first elastic member, and the other end of the clamping member is used to extend out of the first mounting hole from the opening and contact the workpiece.

6. The welding jig according to claim 5, characterized in that: The clamping member is a sphere, and the sphere is rotatably disposed in the first mounting hole.

7. The welding jig according to claim 3, characterized in that: The clamping assembly also includes a gripping portion, one end of which is connected to the clamping seat, and the other end of which extends out of the edge of the clamping seat.

8. The welding jig according to claim 3, characterized in that: The clamping seat is provided with a plurality of weight-reducing grooves.

9. The welding jig according to any one of claims 3 to 8, characterized in that: The clamping seat is provided with a first through hole, and the welding fixture further comprises a material taking component, and the material taking component comprises: Reclaiming seat; A first push post is disposed on the material picking seat, and is used to pass through the first through hole to push the workpiece to separate from the positioning surface.

10. The welding jig according to claim 9, characterized in that: The material taking seat is provided with a second mounting hole, and the material taking assembly further comprises: a second elastic member, wherein the second elastic member is disposed in the second mounting hole; A second push column, wherein the second push column is disposed in the second mounting hole, one end of the second push column is connected to the second elastic member, and the other end is used to extend out of the second mounting hole to contact the clamping assembly.

11. The welding jig according to claim 9, characterized in that: The material taking assembly further comprises a plurality of guide blocks, each of which is arranged at intervals along the outer edge of the material taking seat; The guide block is provided with a guide surface, and the guide surface is used to contact the outer edge of the clamping seat when the clamping seat is close to the material taking seat.

12. The welding jig according to claim 1, characterized in that: The base is provided with a second through hole, and the welding fixture further comprises: A top column, the top column is movably disposed in the second through hole, and the top column is used to contact the clamping assembly to push the clamping assembly to separate from the base; A second driving member is disposed on the base, and is used for driving the top column to move.

13. A welding device, characterized in that: Comprising a welding jig as described in any one of claims 1-12.

Images