CN114393303A - Welding jig and laser welding equipment - Google Patents

Abstract

The application belongs to the technical field of laser welding, and relates to a welding fixture and laser welding equipment. The technical scheme provided by the application comprises a substrate, a fixing plate, a positioning mechanism and a first clamping mechanism; the fixed plate is arranged on the base plate, a plurality of placing grooves used for placing first workpieces are formed in the fixed plate, the first clamping mechanism is arranged on the base plate and used for clamping the first workpieces in the placing grooves, and the positioning mechanism is arranged on the fixed plate and used for positioning the second workpieces. A plurality of metal sheets can be positioned and clamped at the same time, the precision of each welding position is ensured, and the welding efficiency is greatly improved; the welding fixture utilizes the acting force of the cam structure and the spring to realize that one power simultaneously clamps a plurality of metal sheets on the left side and the right side, and the positioning precision is high; the laser welding equipment can be compatible with different placing forms of the welding fixture, is suitable for welding at different angles, and has good effect on the welding of multiple layers and multiple angles of complex products.

Description

Welding jig and laser welding equipment

Technical Field

The application relates to the technical field of laser welding, more specifically say, in particular to welding jig and laser welding equipment.

Background

With the wide application of laser welding, the welded product presents the characteristics of diversification, one product needs to be welded together with a plurality of parts, the customization degree is higher and higher due to multi-part, multi-layer and multi-angle welding, and the welding of some complex products is also more and more in the field of laser welding. When products such as connectors and the like are subjected to laser welding, a plurality of metal sheets in different shapes need to be welded with a multilayer main body, a common welding mode is to weld the metal sheets one by one with the main body, and then weld another part after welding, so that the welding mode is low in efficiency.

Disclosure of Invention

The invention aims to provide a welding fixture and laser welding equipment, and solves the technical problem of low welding efficiency in the prior art.

In order to solve the above-mentioned problems, embodiments of the present invention provide the following technical solutions:

a welding fixture is used for clamping a first workpiece and a second workpiece,

the welding fixture comprises a base plate, a fixing plate, a positioning mechanism and a first clamping mechanism;

the fixed plate is arranged on the base plate, a plurality of placing grooves used for placing first workpieces are formed in the fixed plate, the first clamping mechanism is arranged on the base plate and used for clamping the first workpieces in the placing grooves, and the positioning mechanism is arranged on the fixed plate and used for positioning the second workpieces.

Further, the first clamping mechanism comprises a driving assembly and a clamping assembly, the clamping assembly is connected with the driving assembly, and the driving assembly is used for driving the clamping assembly to be close to or far away from the placing groove;

the positioning mechanism comprises a plurality of positioning pins arranged on the fixing plate, and the positioning pins are positioned with the pin holes of the second workpiece.

Further, the centre gripping subassembly includes fixed block, activity briquetting and first elastic component, the fixed block is fixed set up in on the base plate, first elastic component both ends respectively with fixed block and activity briquetting are connected, the activity briquetting is located between base plate and the fixed plate, be equipped with a plurality of bosss on the activity briquetting, the boss passes the fixed plate, the activity briquetting with drive assembly connects, the activity briquetting is in drive assembly's drive is followed down and is kept away from the direction of standing groove removes, the activity briquetting is in under the elasticity of first elastic component along being close to the direction of standing groove removes, so that the boss centre gripping first work piece in the standing groove.

Furthermore, the base plate is provided with a limiting block, the driving assembly comprises a shifting block, a cam structure, a moving block and a second elastic part, two ends of the second elastic part are respectively connected with the limiting block and the moving block, the cam structure is rotatably arranged on the base plate, the shifting block is connected with the cam structure, the shifting block is used for driving the cam structure to rotate, the cam structure is driven by the shifting block to abut against the moving block, the moving block is driven to move in a direction close to the movable pressing block, and when the cam structure is driven by the shifting block to separate from the moving block, the moving block moves in a direction far away from the movable pressing block under the elasticity of the second elastic part.

Furthermore, the driving assemblies are in one group, the clamping assemblies are in two groups, and the driving assemblies drive the two groups of clamping assemblies to clamp the first workpiece; two first inclined planes are arranged on the moving block, and second inclined planes abutted against the first inclined planes are arranged on movable pressing blocks in the two groups of clamping assemblies;

the placing groove is a profile groove, and a plurality of guide blocks are arranged on the base plate.

Furthermore, the welding fixture further comprises a second clamping mechanism arranged on the base, the second clamping mechanism comprises a guide seat, a top pressing block, an elastic pressing plate, a buckling block and a bolt, the guide seat is provided with a mounting groove, the elastic pressing plate is arranged in the mounting groove, the top pressing block is arranged on the elastic pressing plate, the base is provided with a slot and a buckling groove, the bolt is arranged on the guide seat, the guide seat is matched with the slot through the bolt, and the buckling block is rotatably arranged on the guide seat and can rotate in the buckling groove.

In order to solve the technical problem mentioned above, an embodiment of the present invention further provides a laser welding apparatus, which adopts the following technical solutions:

a laser welding device comprises a workbench, a galvanometer welding mechanism, a feeding mechanism and the welding fixture;

the utility model discloses a laser welding machine, including the workstation, the workstation is equipped with vibrating mirror welding mechanism, feeding mechanism, welding jig, feeding mechanism and vibrating mirror welding mechanism, vibrating mirror welding mechanism with feeding mechanism locates on the workstation, welding jig locates on the feeding mechanism, feeding mechanism is used for the drive welding jig removes extremely vibrating mirror welding mechanism's work area, vibrating mirror welding mechanism is used for right first work piece and second work piece on the welding jig carry out laser welding.

Further, the feeding mechanism comprises an inclined support, a feeding motion platform, at least one first positioning assembly and at least one second positioning assembly;

the feeding motion platform is arranged on the inclined support, the first positioning assembly and the second positioning assembly are arranged on the feeding motion platform, the first positioning assembly is used for bearing the welding fixture horizontally placed so that the welding fixture faces the welding light path of the vibrating mirror welding mechanism under the inclined angle of the inclined support, and the second positioning assembly is used for bearing the welding fixture vertically placed so that the welding position at the top of the welding fixture faces the welding light path of the vibrating mirror welding mechanism.

Furthermore, the first positioning assembly comprises a base, a rotating platform, a switching support, an air claw, a mounting plate, a side pressure cylinder, a positioning block and a pressing cylinder;

the base is arranged on the feeding motion platform, the lower end of the rotating platform is provided with a pneumatic sliding ring, the pneumatic sliding ring is rotatably arranged in the base, the switching support is arranged on the rotating platform, the gas claw is arranged on the switching support, the gas claw is provided with an electromagnetic valve, the mounting plate is arranged on the gas claw, the positioning block, the side pressure cylinder and the lower pressure cylinder are arranged on the mounting plate, the side pressure cylinder is provided with a side pressure plate, and the lower pressure cylinder is provided with a lower pressure block;

the second positioning assembly comprises an inclined supporting seat, a platform mounting plate, an X-shaped motion platform, a ball plunger, a positioning seat and a positioning block;

the inclined supporting seat is arranged on the feeding motion platform, the platform mounting plate is arranged on the inclined supporting seat, the X motion platform is arranged on the platform mounting plate, the positioning seat is arranged on the X motion platform, the positioning block is arranged on the positioning seat, the ball plunger is arranged on the positioning seat and the positioning block, the inclined direction of the inclined supporting seat is opposite to that of the inclined supporting seat, so that the welding position at the top of the welding fixture is perpendicular to the welding light path of the vibrating mirror welding mechanism.

Further, the galvanometer welding mechanism comprises a Z-motion platform, a galvanometer mounting plate, a galvanometer welding head, an air knife, a smoke suction pipe and a platform mounting seat;

the Z motion platform is arranged on the platform mounting seat, the vibrating mirror mounting plate is arranged on the Z motion platform, and the vibrating mirror welding head, the air knife and the smoke suction pipe are arranged on the vibrating mirror mounting plate.

Compared with the prior art, the embodiment of the invention mainly has the following beneficial effects:

a plurality of placing grooves are formed in a fixing plate, a first clamping mechanism can simultaneously clamp a plurality of first workpieces, after the plurality of first workpieces are clamped and fixed, a second workpiece is positioned through a positioning mechanism to weld the welding positions of the first workpieces and the second workpiece, a plurality of metal sheets can be simultaneously positioned and clamped, the precision of each welding position is guaranteed, and the welding efficiency is greatly improved; the welding fixture utilizes the acting force of the cam structure and the spring to realize that one power simultaneously clamps a plurality of metal sheets on the left side and the right side, and the positioning precision is high; the laser welding equipment can be compatible with different placing forms of the welding fixture, is suitable for welding at different angles, and has good effect on multi-layer and multi-angle welding of complex products; the welding fixture is designed to be placed horizontally and vertically, the front three layers and the top of a product are welded respectively, the welding fixture is suitable for multi-layer and multi-angle welding, the structure is compact, and the operation is convenient; the horizontal positioning device and the vertical positioning device are designed according to two forms of the welding fixture, so that the positioning precision is high, and the welding fixture is suitable for batch production of complex products.

Drawings

In order to illustrate the solution of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are some embodiments of the invention, and that other drawings may be derived from these drawings by a person skilled in the art without inventive effort.

FIG. 1 is a schematic diagram of a connector product according to an embodiment of the invention;

FIG. 2 is a schematic structural diagram of a welding fixture according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of the welding fixture with the fixing plate hidden according to the embodiment of the present invention;

FIG. 4 is a schematic view illustrating a connection relationship between a second clamping mechanism and a substrate according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a second clamping mechanism according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a laser welding apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a feeding mechanism in an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a first positioning assembly in an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a second positioning assembly in an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a galvanometer welding mechanism according to an embodiment of the present disclosure.

Description of reference numerals:

100. welding a clamp; 1. a substrate; 2. a fixing plate; 21. a placement groove; 3. a positioning mechanism; 31. positioning pins; 4. a first clamping mechanism; 41. a drive assembly; 411. a shifting block; 412. a cam structure; 413. a moving block; 414. a second elastic member; 42. a clamping assembly; 421. a fixed block; 422. a movable pressing block; 423. a first elastic member; 424. a boss; 5. a limiting block; 6. a guide block; 7. a second clamping mechanism; 71. a guide seat; 72. pressing the top of the container; 73. an elastic pressure plate; 74. buckling blocks; 75. a bolt; 8. a feeding mechanism; 81. an inclined support; 82. a feeding motion platform; 83. a first positioning assembly; 831. rotating the platform; 832. a transfer support; 833. a pneumatic claw; 8331. an electromagnetic valve; 834. mounting a plate; 835. a lateral pressure cylinder; 8351. side pressing plates; 836. positioning blocks; 837. pressing down the air cylinder; 8371. pressing the block; 84. a second positioning assembly; 841. inclining the supporting seat; 842. a platform mounting plate; 843. an X motion platform; 844. a ball plunger; 845. positioning seats; 846. positioning a plate; 9. a galvanometer welding mechanism; 91. a Z motion platform; 92. a galvanometer mounting plate; 93. a galvanometer welding head; 94. an air knife; 95. a smoke suction pipe; 96. a platform mounting seat.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "comprising" and "having," and any variations thereof, in the description and claims of the present invention and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and in the claims, or in the drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the relevant drawings.

Examples

As shown in fig. 2 and 3, a welding jig 100 for clamping a first workpiece and a second workpiece;

the welding fixture 100 comprises a substrate 1, a fixing plate 2, a positioning mechanism 3 and a first clamping mechanism 4;

the fixed plate 2 is arranged on the base plate 1, a plurality of placing grooves 21 for placing first workpieces are arranged on the fixed plate 2, the first clamping mechanism 4 is arranged on the base plate 1 and used for clamping the first workpieces in the placing grooves 21, and the positioning mechanism 3 is arranged on the fixed plate 2 and used for positioning the second workpieces.

According to the welding fixture 100 provided by the embodiment of the invention, the fixing plate 2 is provided with the plurality of placing grooves 21, the first clamping mechanism 4 can simultaneously clamp a plurality of first workpieces, and after the plurality of first workpieces are clamped and fixed, the positioning mechanism 3 is used for positioning the second workpiece so as to weld the welding positions of the first workpieces and the second workpieces; welding jig 100 can press from both sides tight a plurality of first work pieces simultaneously, guarantees the precision of every welding position on a plurality of first work pieces and the second work piece, welds a plurality of first work pieces and second work piece simultaneously at a welding jig 100, has improved welding efficiency greatly.

In one embodiment, the welding fixture 100 mainly relates to the field of laser welding, and is applicable to a multi-layer and multi-angle laser welding device for products such as connectors and the like, specifically, the connector includes a plurality of first workpieces and a plurality of second workpieces in different shapes, the first workpiece is a metal sheet, the second workpiece is a main body, after a plurality of metal sheets in different shapes and a single-layer main body are welded, a layer of partition plate is arranged in the middle of the main body, then a layer of main body is arranged to be welded with the metal sheet, three layers of main bodies need to be welded in total, two layers of partition plates are arranged in the middle of the main body, and after the three layers of main bodies are welded, the three layers of main bodies are connected and conducted through the top of the welding.

Taking the connector product shown in fig. 1 as an example, fig. 1a shows 5 metal sheets and a main body, the metal sheets are vertical or inclined at 45 degrees, 5 metal sheets are positioned at one time by a first clamping mechanism 4 of a welding fixture 100, and then a main body is inserted, a positioning mechanism 3 positions the main body, which is a first layer of welding, the welding positions are two sides of the metal sheets contacting with the main body, 3-4 points are spot-welded at each position, fig. 1b shows a partition plate, after the first layer is welded, a partition plate is inserted, a main body of a second layer is installed for welding, a partition plate is inserted after the second layer is welded, a main body of a third layer is installed, fig. 1c shows a semi-finished product with three layers, and a small inclined plane at a top contact angle is welded after the three layers are welded, and the above process is a complete process for welding a connector product.

In one embodiment, the placing groove 21 is a contour groove, and the base plate 1 is provided with a plurality of guide blocks 6, and the guide blocks 6 facilitate the placing of the first workpiece.

The first clamping mechanism 4 comprises a driving component 41 and a clamping component 42, the clamping component 42 is connected with the driving component 41, and the driving component 41 is used for driving the clamping component 42 to approach or depart from the placing groove 21.

The positioning mechanism 3 comprises a plurality of positioning pins 31 arranged on the fixing plate 2, and the positioning pins 31 are positioned with the pin holes of the second workpiece.

The clamping assembly 42 comprises a fixed block 421, a movable pressing block 422 and a first elastic piece 423, the fixed block 421 is fixedly arranged on the substrate 1, two ends of the first elastic piece 423 are respectively connected with the fixed block 421 and the movable pressing block 422, the movable pressing block 422 is located between the substrate 1 and the fixed plate 2, a plurality of bosses 424 are arranged on the movable pressing block 422, the bosses 424 penetrate through the fixed plate 2, the movable pressing block 422 is connected with the driving assembly 41, the movable pressing block 422 is driven by the driving assembly 41 to move along the direction away from the placing groove 21, and the movable pressing block 422 moves along the direction close to the placing groove 21 under the elastic force of the first elastic piece 423, so that the bosses 424 clamp the first workpiece in the placing groove 21.

In one embodiment, the first elastic member 423 is a spring or a spring plate, and preferably, the spring is a compression spring.

The base plate 1 is provided with a limiting block 5, the driving assembly 41 includes a shifting block 411, a cam structure 412, a moving block 413 and a second elastic member 414, two ends of the second elastic member 414 are respectively connected with the limiting block 5 and the moving block 413, the cam structure 412 is rotatably disposed on the base plate 1, the shifting block 411 is connected with the cam structure 412, the shifting block 411 is used for driving the cam structure 412 to rotate, when the cam structure 412 is abutted to the moving block 413 under the driving of the shifting block 411, the moving block 413 is driven to move in a direction close to the moving press block 422, when the cam structure 412 is disengaged from the moving block 413 under the driving of the shifting block 411, the moving block 413 moves in a direction far away from the moving press block 422 under the elastic force of the second elastic member 414.

In one embodiment, the second elastic member 414 is a spring or a spring plate, and preferably, the spring is a compression spring.

In one embodiment, the driving assemblies 41 are a set, the clamping assemblies 42 are two sets, and the driving assemblies 41 drive the two sets of clamping assemblies 42 to clamp the first workpiece; two first inclined planes are arranged on the moving block 413, and a second inclined plane abutted against the first inclined planes is arranged on the movable pressing blocks 422 in the two groups of clamping assemblies 42, preferably, the first inclined planes and the second inclined planes are 45 degrees.

The welding fixture 100 has two products positioned on the left and right sides, and the principle is that the cam structure 412 on the shifting block 411 pushes the moving block 413, and the acting force of the first elastic member 423 is used to clamp and loosen the first workpiece, the welding fixture 100 in fig. 2 is in a clamping state, the limiting block 5 and the fixed block 421 are fixedly arranged on the base plate 1, the first elastic member 423 is pre-tightly arranged in the fixed block 421, the first elastic member 423 is pre-tightly arranged in the moving block 413, the movable pressing block 422 tightly presses the first workpiece on the outer side of the contour groove of the fixed plate 2 under the action of the first elastic member 423, the small boss 424 on the movable pressing block 422 is tightly attached to the first workpiece, when the first workpiece is inserted, the shifting block 411 needs to be pushed to the right, the side with the radius length of the cam structure 412 overcomes the elastic force of the first elastic member 423 and the second elastic member 414 and pushes the moving block 413 forward, so that the first elastic member 423 and the second elastic member 414 are compressed, the 45-degree first inclined surfaces on the two sides of the moving block 413 push against the second inclined surface of the movable pressing block 422 to move forward by 45 degrees against the elastic force of the first elastic piece 423, so that the welding fixture 100 is in an open state, and a first workpiece can be taken and placed at the moment; when the shifting block 411 is pushed back to the left, the side with the short radius of the cam structure 412 rotates to face the movable pressing block 422, the movable pressing block 422 presses the first workpiece under the elastic force of the two first elastic members 423, and the moving block 413 clings to the shifting block 411 downwards under the elastic force of the two second elastic members 414; the moving block 413 and the two sides of the base plate 1 have guiding functions, the fixed block 421 and the movable pressing block 422 also have guiding functions, and matching precision is high.

As shown in fig. 4 and 5, the welding fixture 100 further includes a second clamping mechanism 7 disposed on the base, the second clamping mechanism 7 includes a guide seat 71, a top pressing block 72, an elastic pressing plate 73, a fastening block 74 and a bolt 75, the guide seat 71 is provided with a mounting groove, the elastic pressing plate 73 is disposed in the mounting groove, the top pressing block 72 is disposed on the elastic pressing plate 73, the base is provided with a slot and a fastening groove, the bolt 75 is disposed on the guide seat 71, the guide seat 71 is matched with the slot through the bolt 75, and the fastening block 74 is rotatably disposed on the guide seat 71 and can rotate in the fastening groove.

Welding jig 100 is divided into two parts from top to bottom, and the lower part includes base plate 1, fixed plate 2, positioning mechanism 3 and first fixture 4, for the aforesaid is used for the welding of preceding three-layer, and the upper part includes second fixture 7 for compress tightly the top after the preceding three-layer has welded. Top briquetting 72 dress is in the mounting groove of guide holder 71, there are 8 top briquetting 72 in the guide holder 71, top briquetting 72 has the step to block and can not fall down, the higher authority is equipped with elastic pressure plate 73, top briquetting 72 has the effect that elasticity is equivalent to the spring, make every top briquetting 72 all fully compress tightly the product, during installation second fixture 7, insert bolt 75 on the pin hole of base, positioning accuracy is high, straining lock 74 is in the lock inslot of base again, welding jig 100 sets up split type upper and lower two parts, convenient operation.

The welding fixture 100 can simultaneously clamp 5 left and right metal sheets, after the metal sheets are positioned and clamped, the pin holes of the product main bodies on one layer are aligned with the positioning pins 31, the flat-fitting fixing plates 2 are pressed in, at the moment, the welding fixture 100 can be placed into a welding position to be positioned and welded, the three layers of product main bodies are sequentially clamped and welded, and the top of the product is welded after a semi-finished product is formed. During welding of the first three layers, the welding fixture 100 is horizontally arranged, and during welding of the last top, the fixture needs to be vertically arranged.

In order to solve the technical problem mentioned above, an embodiment of the present invention further provides a laser welding apparatus, which adopts the following technical solutions:

as shown in fig. 2, 4 and 6, a laser welding apparatus includes a work table, a galvanometer welding mechanism 9, a feeding mechanism 8, and a welding jig 100 as described above;

mirror welding mechanism 9 shakes with feeding mechanism 8 locates on the workstation, welding jig 100 locates on the feeding mechanism 8, feeding mechanism 8 is used for the drive welding jig 100 removes to the work area of mirror welding mechanism 9 shakes, mirror welding mechanism 9 shakes is used for right first work piece and second work piece on welding jig 100 carry out laser welding. The laser welding equipment can be compatible with different placing forms of the welding fixture 100, is suitable for welding at different angles, and has good effect on multi-layer and multi-angle welding of complex products; the welding fixture 100 is designed to be placed horizontally and vertically, the front three layers and the top of a product are welded respectively, the welding fixture is suitable for multi-layer and multi-angle welding, the structure is compact, and the operation is convenient; the horizontal positioning device and the vertical positioning device designed according to the two forms of the welding fixture 100 have high positioning precision and are suitable for batch production of complex products.

As shown in fig. 6 and 7, the feeding mechanism 8 includes an inclined support 81, a feeding motion platform 82, at least one first positioning assembly 83 and at least one second positioning assembly 84;

the feeding motion platform 82 is arranged on the inclined support 81, the first positioning component 83 and the second positioning component 84 are arranged on the feeding motion platform 82, the first positioning component 83 is used for bearing the horizontally arranged welding fixture 100 so that the welding fixture 100 faces the welding light path of the galvanometer welding mechanism 9 under the inclined angle of the inclined support 81, and the second positioning component 84 is used for bearing the vertically arranged welding fixture 100 so that the welding position at the top of the welding fixture 100 faces the welding light path of the galvanometer welding mechanism 9.

In one embodiment, the tilt angle of the tilt mount 81 is 30 degrees. The tilting mount 81 is set to tilt 30 degrees for the welding of the first three layers, since the laser is directed vertically downwards and the welding is made at the side of the foil, so that the foil is tilted at an angle to avoid blocking light.

As shown in fig. 7 and 8, the first positioning assembly 83 includes a base, a rotating platform 831, an adapting support 832, an air claw 833, a mounting plate 834, a side pressure cylinder 835, a positioning plate 846, and a lower pressure cylinder 837;

the base is located on the pay-off motion platform 82, rotary platform 831 lower extreme is equipped with pneumatic sliding ring, pneumatic sliding ring rotate set up in the base, switching support 832 is located on rotary platform 831, gas claw 833 is located on the switching support 832, be equipped with solenoid valve 8331 on the gas claw 833, mounting panel 834 is located on the gas claw 833, locating plate 846, side pressure cylinder 835 and push down cylinder 837 are located on the mounting panel 834, be equipped with side pressure board 8351 on the side pressure cylinder 835, push down cylinder 837 with be equipped with push down block 8371 on.

In fig. 8, the first positioning assembly 83 is in a clamping state, the front air claw 833 of the welding fixture 100 is opened, the side pressure air cylinder 835 and the lower pressure air cylinder 837 are in a loose state, the welding fixture 100 is horizontally placed on the mounting plate 834 of the first positioning assembly 83, the air claw 833 and the side pressure air cylinder 835 are clamped to enable the welding fixture 100 to be attached to the positioning plate 846, the lower pressure air cylinder 837 presses the product main body downwards, the lower pressure block 8371 is provided with a contour groove, and the lower pressure block 8371 can avoid the welding position of metal sheets, so that the problems of how to realize positioning and pressing of the welding fixture 100 and avoiding the welding positions of a plurality of metal sheets are solved; after clamping and fixing, the feeding motion platform 82 sends the welding fixture 100 to a welding position for laser welding, and since metal sheets are irregular, welding is carried out by rotating different angles, the air pipe and the wire can rotate in a follow-up manner by arranging a pneumatic sliding ring, the heights of the front three layers of the welding mechanism are different, the vibrating mirror welding mechanism 9 moves to correspond to the heights along with the movement, so that the laser focus is on a welding surface, the welding effect of each layer is ensured, and after welding is completed, the feeding motion platform 82 returns to the material placing position.

As shown in fig. 7 and 9, the second positioning assembly 84 includes an inclined supporting seat 841, a platform mounting plate 842, an X-motion platform 843, a ball plunger 844, a positioning seat 845, and a positioning plate 846;

the inclined support seat 841 is arranged on the feeding motion platform 82, the platform mounting plate 842 is arranged on the inclined support seat 841, the X motion platform 843 is arranged on the platform mounting plate 842, the positioning seat 845 is arranged on the X motion platform 843, the positioning plate 846 is arranged on the positioning seat 845, the ball plunger 844 is arranged on the positioning seat 845 and the positioning plate 846, and the inclined direction of the inclined support seat 841 is opposite to that of the inclined support seat 81, so that the welding position at the top of the welding fixture 100 is perpendicular to the welding light path of the vibrating mirror welding mechanism 9.

The welding jig 100 needs to be vertically placed when the top of the product is welded at last, and since the welding position is a plane, the inclined support seat 841 is reversely inclined to enable the welding position to be horizontal, thereby facilitating laser welding. When the top of product is welded, weld fixture 100 is vertically placed into positioning seat 845, two ball plungers 844 are tightly pushed on the side faces, ball plungers 844 have certain elasticity, and weld fixture 100 can be accurately positioned during discharging.

As shown in fig. 10, the galvanometer welding mechanism 9 includes a Z-moving platform 91, a galvanometer mounting plate 92, a galvanometer welding head 93, an air knife 94, a smoke suction pipe 95 and a platform mounting seat 96;

the Z-moving platform 91 is arranged on the platform mounting base 96, the galvanometer mounting plate 92 is arranged on the Z-moving platform 91, and the galvanometer welding head 93, the air knife 94 and the smoke suction pipe 95 are arranged on the galvanometer mounting plate 92. Every layer of height is different in the preceding three-layer, and Z motion platform 91 corresponds the height along with removing, and what will judge the clamping in advance is the several layers, and every layer all corresponds welding height to guarantee the welding effect on every layer, the product yield is high.

It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention without limiting its scope. This invention may be embodied in many different forms and, on the contrary, these embodiments are provided so that this disclosure will be thorough and complete. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and modifications can be made, and equivalents may be substituted for elements thereof. All equivalent structures made by using the contents of the specification and the attached drawings of the invention can be directly or indirectly applied to other related technical fields, and are also within the protection scope of the patent of the invention.

Claims (10)

1. A welding fixture is used for clamping a first workpiece and a second workpiece and is characterized in that,

the welding fixture comprises a base plate, a fixing plate, a positioning mechanism and a first clamping mechanism;

the fixed plate is arranged on the base plate, a plurality of placing grooves used for placing first workpieces are formed in the fixed plate, the first clamping mechanism is arranged on the base plate and used for clamping the first workpieces in the placing grooves, and the positioning mechanism is arranged on the fixed plate and used for positioning the second workpieces.

2. The welding jig of claim 1,

the first clamping mechanism comprises a driving assembly and a clamping assembly, the clamping assembly is connected with the driving assembly, and the driving assembly is used for driving the clamping assembly to be close to or far away from the placing groove;

the positioning mechanism comprises a plurality of positioning pins arranged on the fixing plate, and the positioning pins are positioned with the pin holes of the second workpiece.

3. The welding jig of claim 2,

the centre gripping subassembly includes fixed block, activity briquetting and first elastic component, the fixed block fixed set up in on the base plate, first elastic component both ends respectively with fixed block and activity briquetting are connected, the activity briquetting is located between base plate and the fixed plate, be equipped with a plurality of bosss on the activity briquetting, the boss passes the fixed plate, the activity briquetting with drive assembly connects, the activity briquetting is in drive assembly's drive is followed down and is kept away from the direction of standing groove removes, the activity briquetting is in under the elasticity of first elastic component along being close to the direction of standing groove removes, so that the boss centre gripping first work piece in the standing groove.

4. The welding jig of claim 3,

the base plate is provided with a limiting block, the driving assembly comprises a shifting block, a cam structure, a moving block and a second elastic piece, two ends of the second elastic piece are respectively connected with the limiting block and the moving block, the cam structure is rotatably arranged on the base plate, the shifting block is connected with the cam structure and used for driving the cam structure to rotate, the cam structure is driven by the shifting block to abut against the moving block to drive the moving block to move in a direction close to the movable pressing block, and when the cam structure is driven by the shifting block to separate from the moving block, the moving block moves in a direction far away from the movable pressing block under the elastic force of the second elastic piece.

5. The welding jig of claim 4,

the driving assemblies are in one group, the clamping assemblies are in two groups, and the driving assemblies drive the two groups of clamping assemblies to clamp the first workpiece; two first inclined planes are arranged on the moving block, and second inclined planes abutted against the first inclined planes are arranged on movable pressing blocks in the two groups of clamping assemblies;

the placing groove is a profile groove, and a plurality of guide blocks are arranged on the base plate.

6. The welding jig of claim 1,

the welding fixture further comprises a second clamping mechanism arranged on the base, the second clamping mechanism comprises a guide seat, a top pressing block, an elastic pressing plate, a buckling block and a bolt, the guide seat is provided with a mounting groove, the elastic pressing plate is arranged in the mounting groove, the top pressing block is arranged on the elastic pressing plate, a slot and a buckling groove are formed in the base, the bolt is arranged on the guide seat, the guide seat is matched with the slot through the bolt, and the buckling block is rotatably arranged on the guide seat and can rotate in the buckling groove.

7. A laser welding apparatus is characterized in that,

comprises a workbench, a galvanometer welding mechanism, a feeding mechanism and a welding clamp according to any one of claims 1 to 6;

the utility model discloses a laser welding machine, including the workstation, the workstation is equipped with vibrating mirror welding mechanism, feeding mechanism, welding jig, feeding mechanism and vibrating mirror welding mechanism, vibrating mirror welding mechanism with feeding mechanism locates on the workstation, welding jig locates on the feeding mechanism, feeding mechanism is used for the drive welding jig removes extremely vibrating mirror welding mechanism's work area, vibrating mirror welding mechanism is used for right first work piece and second work piece on the welding jig carry out laser welding.

8. The laser welding apparatus according to claim 7,

the feeding mechanism comprises an inclined support, a feeding motion platform, at least one first positioning assembly and at least one second positioning assembly;

the feeding motion platform is arranged on the inclined support, the first positioning assembly and the second positioning assembly are arranged on the feeding motion platform, the first positioning assembly is used for bearing the welding fixture horizontally placed so that the welding fixture faces the welding light path of the vibrating mirror welding mechanism under the inclined angle of the inclined support, and the second positioning assembly is used for bearing the welding fixture vertically placed so that the welding position at the top of the welding fixture faces the welding light path of the vibrating mirror welding mechanism.

9. The laser welding apparatus according to claim 8,

the first positioning assembly comprises a base, a rotating platform, a switching support, a pneumatic claw, a mounting plate, a side pressure cylinder, a positioning block and a pressing cylinder;

the base is arranged on the feeding motion platform, the lower end of the rotating platform is provided with a pneumatic sliding ring, the pneumatic sliding ring is rotatably arranged in the base, the switching support is arranged on the rotating platform, the gas claw is arranged on the switching support, the gas claw is provided with an electromagnetic valve, the mounting plate is arranged on the gas claw, the positioning block, the side pressure cylinder and the lower pressure cylinder are arranged on the mounting plate, the side pressure cylinder is provided with a side pressure plate, and the lower pressure cylinder is provided with a lower pressure block;

the second positioning assembly comprises an inclined supporting seat, a platform mounting plate, an X-shaped motion platform, a ball plunger, a positioning seat and a positioning block;

the inclined supporting seat is arranged on the feeding motion platform, the platform mounting plate is arranged on the inclined supporting seat, the X motion platform is arranged on the platform mounting plate, the positioning seat is arranged on the X motion platform, the positioning block is arranged on the positioning seat, the ball plunger is arranged on the positioning seat and the positioning block, the inclined direction of the inclined supporting seat is opposite to that of the inclined supporting seat, so that the welding position at the top of the welding fixture is perpendicular to the welding light path of the vibrating mirror welding mechanism.

10. The laser welding apparatus according to claim 7,

the vibrating mirror welding mechanism comprises a Z-shaped moving platform, a vibrating mirror mounting plate, a vibrating mirror welding head, an air knife, a smoke suction pipe and a platform mounting seat;

the Z motion platform is arranged on the platform mounting seat, the vibrating mirror mounting plate is arranged on the Z motion platform, and the vibrating mirror welding head, the air knife and the smoke suction pipe are arranged on the vibrating mirror mounting plate.

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