CN113118626A

CN113118626A - Welding system for metal laminate and welding method thereof

Info

Publication number: CN113118626A
Application number: CN202110493848.2A
Authority: CN
Inventors: 向纯斌; 叶满林; 王成钢; 罗贤
Original assignee: Honorfaith Furniture Co Ltd
Current assignee: Honorfaith Furniture Co Ltd
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2021-07-16

Abstract

The invention provides a welding system and a welding method for a metal laminate, the system comprises a metal laminate positioning device and a welding robot, the metal laminate positioning device comprises a base, a fixing seat is fixed to one end of the top surface of the base, a sliding seat is arranged at the other end of the top surface of the base in a sliding mode and can be close to or far away from the fixing seat, a left end positioning block is transversely fixed to the top surface of the fixing seat, a right end positioning block is transversely fixed to the top surface of the sliding seat, the two left end positioning blocks and the two right end positioning blocks are used for clamping two ends of a metal laminate to be positioned respectively, a rear side positioning block and a front side pushing positioning assembly are longitudinally and relatively fixed to the top surface of the fixing seat, a rear side positioning block and a front side pushing positioning assembly are also longitudinally and relatively fixed to the top surface of the sliding seat, and a square positioning space. The welding system and the welding method thereof can improve the production efficiency, the welding quality and the production safety and reduce the labor intensity.

Description

Welding system for metal laminate and welding method thereof

Technical Field

The invention relates to the technical field of metal laminate welding, in particular to a welding system for a metal laminate and a welding method thereof.

Background

The invention relates to a metal laminate which is a square support plate formed by welding a metal panel through folding edges at the periphery. At present, when a metal laminate is welded, manual operation of operators is excessively relied on, and the problems of high labor intensity of personnel, poor welding quality, low production efficiency, high safety risk, extremely easy injury of personnel and the like are solved. Therefore, it is desirable to provide a solution to the above technical problem.

Disclosure of Invention

In view of the above, the present invention needs to provide a welding system for metal layer plates and a welding method thereof, so as to improve the production efficiency, the welding quality and the production safety and reduce the labor intensity.

The technical scheme of the invention is as follows:

a welding system for a metal laminate comprises a metal laminate positioning device and a welding robot, wherein the metal laminate positioning device comprises a base, a fixed seat is fixed at one end of the top surface of the base, a sliding seat is arranged at the other end of the top surface of the base in a manner that the other end of the top surface of the base can be close to or far away from the fixed seat in a sliding manner, a left end positioning block is transversely fixed on the top surface of the fixed seat, a right end positioning block is transversely fixed on the top surface of the sliding seat, the two left end positioning blocks and the two right end positioning blocks are respectively used for clamping two ends of the metal laminate for positioning, a rear side positioning block and a front side pushing positioning assembly are longitudinally and relatively fixed on the top surface of the sliding seat, a rear side positioning block and a front side pushing positioning assembly are also longitudinally and relatively fixed on the top surface of the sliding seat, a square positioning space is formed by the left end positioning block, the right end, the left end and the right end of the metal laminate are clamped for positioning, the front side and the rear side of the metal laminate are positioned after the metal laminate is pushed to move towards the rear side positioning block for a preset distance through the two front side pushing and positioning assemblies, and the welding robot is used for welding the metal laminate positioned by the metal laminate positioning device.

Furthermore, the fixed seat and the sliding seat are respectively and oppositely provided with a turnover shaping mechanism for matching with the rear side positioning block and the front side pushing positioning assembly to clamp and shape the side plate of the metal layer plate, the fixed seat is oppositely provided with two sets of pressing and shaping mechanisms, and the sliding seat is also oppositely provided with two sets of pressing and shaping mechanisms for welding the welding positions at the four corners of the metal layer plate by a welding robot after pressing and shaping.

Further, upset plastic mechanism includes two bearing frames of relative fixation on the sliding seat, rotatably installs the trip shaft through the bearing on two bearing frames, and the upset driving piece that is used for driving the reciprocal upset of trip shaft is installed in a bearing frame outside, fixedly connected with roll-over stand on the trip shaft, on roll-over stand one end was fixed in the trip shaft, its other end radially stretched out along the trip shaft, the end both sides that stretch out of roll-over stand are fixed with the plastic subassembly respectively to the front and back side that supplies to cooperate rear side locating piece and front side to promote locating component to carry out the clamp pressure plastic to the metal laminate.

Furthermore, the shaping assembly comprises a shaping driving piece and a shaping block, the shaping driving piece is fixed on the roll-over stand, and the shaping block is fixed at the driving end of the shaping driving piece.

Further, compressing tightly the forming mechanism and including the mount, mount one end is fixed in on the sliding seat, and its other end stretches out to the mount outside, and the mount top articulates there is the swing arm, and swing arm one end is fixed with the design mould that is used for the metal laminate four corners position to finalize the design, and the mount bottom articulates the base that stretches out to the mount outside, is fixed with the jacking driving piece on the base, and the jacking end of jacking driving piece articulates in the swing arm other end.

Furthermore, a hinged seat is fixed on the swing arm, and the bottom end of the hinged seat is hinged to the top end of the fixed frame through a hinged shaft.

Furthermore, the fixing frame top is close to the articulated seat position and is fixed with a limiting block, a limiting groove with an upward opening is formed in the limiting block, and the swing arm is limited in the limiting groove of the limiting block when pressing the metal laminate downwards.

Furthermore, the shaping mold comprises a connecting section and a mold section which are in L-shaped integrated connection, one end of the connecting section is fixed on the swing arm, a pressing block protrudes downwards from the extending end of the mold section, and a shaping block matched with the hanging hole of the metal laminate protrudes downwards from the lower surface of the pressing block.

Furthermore, the welding robot comprises a movable mechanical arm and a laser welding head fixed at the free end of the movable mechanical arm, and the movable mechanical arm is used for driving the laser welding head to lift, translate and rotate so that the laser welding head can move to the four-corner welding position of the metal layer plate to weld.

The invention also provides a welding method of the welding system for the metal laminate, which comprises the following steps: the metal laminate to be welded is placed in a square positioning space formed on a fixing seat and a sliding seat, a right end positioning block is driven to move for a preset distance through the sliding seat, the left end and the right end of the metal laminate are positioned, a front side pushing and positioning assembly acts, the front side and the rear side of the metal laminate are positioned, a turnover shaping mechanism and a matched rear side positioning block and a front side pushing and positioning assembly are oppositely arranged on the fixing seat and the sliding seat respectively, side plates of the metal laminate are clamped and shaped, after the metal laminate is pressed and shaped at four corners of the metal laminate through a pressing and shaping mechanism, and then welding is carried out through a welding robot.

The invention has the beneficial effects that:

the welding system for the metal laminate is matched with the welding robot by arranging the metal laminate positioning device. The metal laminate to be welded is placed in a square positioning space formed on the fixed seat and the sliding seat, and the right end positioning block is driven by the sliding seat to move for a preset distance, so that the left end and the right end of the metal laminate are positioned. The front side pushes the positioning component to act, so that the front side and the rear side of the metal laminate are positioned. Through the overturning shaping mechanism which is arranged on the fixing seat and the sliding seat relatively respectively and the rear side positioning block and the push plate which are matched with the overturning shaping mechanism, the side plate of the metal laminate plate is clamped and shaped, the verticality of the side plate is ensured, and the accurate butt joint of the four corners of the metal laminate plate is facilitated. After the metal layer plate four-corner position welding positions are pressed and shaped through the pressing and shaping mechanism, welding is carried out through a welding robot. Therefore, the welding position can be guaranteed to be accurate, welding is firm, automatic production of large-batch metal laminates is easy to realize, production efficiency and production safety are improved, and labor intensity of workers is reduced.

Preferred embodiments of the present invention and advantageous effects thereof will be described in further detail with reference to specific embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings, there is shown in the drawings,

FIG. 1 is a first perspective view of a metal laminate according to the present invention;

FIG. 2 is a second perspective view of the metal laminate of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a perspective view of a welding system for metal laminates in accordance with the present invention;

FIG. 5 is a top plan view of a metal layer positioning device of the welding system for metal layers according to the present invention;

FIG. 6 is a perspective view of the roll-over truing mechanism of the welding system for metal sheets of the present invention;

FIG. 7 is a perspective view of a hold-down sizing mechanism of the welding system for metal sheets of the present invention;

FIG. 8 is a view of the press setting mechanism of the welding system for metal sheets of the present invention in an open position;

FIG. 9 is a state diagram of the pressing and shaping mechanism of the welding system for metal sheets according to the present invention;

FIG. 10 is a perspective view of a sizing die of the welding system for metal laminates of the present invention.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

Referring to fig. 1 to 3, the present invention provides a metal laminate 1, which includes a rectangular main body plate 11, end plates 12 formed by bending two ends of the main body plate 11 at right angles, and a vertical folded edge 13 and a horizontal folded edge 14 formed by bending two ends of each end plate 12 at right angles. The horizontal folding edges 14 are arranged in parallel with the main body plate 11, and one end of each vertical folding edge 13 is abutted against the surface of the corresponding horizontal folding edge 14. The outer side surface of each vertical folding edge 13 is flush with the end surface of the corresponding horizontal folding edge 14. The two sides of the main body plate 11 are respectively bent at a right angle to form side plates 15, each side plate 15 is inwardly bent at a right angle to form a flat plate 16, and the flat plates 16 are arranged in parallel with the main body plate 11. The two ends of each side plate 15 and the flat plate 16 are provided with a hanging hole 10 for being mounted on the supporting frame. The end of each vertical folding edge 13 close to the main body plate 11 is provided with a cutting angle 19, the two ends of each side plate 15 are also provided with cutting angles 19, the cutting surfaces of the two cutting angles 19 are abutted, and the size of the cutting angle 19 is preferably 45 degrees so as to improve the structural strength and the aesthetic degree of the product. Each flat plate 16 is welded at both ends to the corresponding horizontal flanges 14. The end face of each plate 16 is welded against the end plate 12 to further increase the structural strength of the laminate. The outer surface of each flat plate 16 is flush with the end surface of the end plate 12, so that the bottom surface of the metal laminate plate 1 is kept flat, and the product appearance is improved. In order to further improve the structural strength and the safety of the metal laminate 1, a reinforcing plate 17 is formed on each flat plate 16 by bending inwards at a right angle, the reinforcing plate 17 is arranged in parallel with the side plate 15, and the side plate 15, the flat plates 16 and the reinforcing plate 17 form a square supporting rod-shaped structure to provide a supporting function for the main body plate 11. A U-shaped hanging member (not shown) is welded to each hanging hole 10, and the opening of the U-shaped hanging member faces the hanging hole 10 of the flat plate 16. Two ends of each reinforcing plate 17 are provided with insertion holes 18 for inserting the U-shaped hanging pieces for welding. The metal laminate 1 of the present invention is obtained by cutting four corners of a metal sheet such as a stainless steel sheet or an iron sheet, bending and forming the sheet, and finally welding both ends of each flat plate 16 to the corresponding horizontal folded edges 14. The manufacturing is simple and convenient, raw materials can be fully utilized, the manufacturing cost is low, the structural strength is high, and mass automatic production is easy to realize.

Referring to fig. 4 and 5, the present invention further provides a welding system for the metal layer plate 1, which includes a metal layer plate positioning device 2 and a welding robot 3. The welding robot 3 is used for welding the metal layer plate positioned by the metal layer plate positioning device 2. The metal laminate positioning device 2 comprises a base 21, and a fixed seat 22 is fixed at one end of the top surface of the base 21. The other end of the top surface of the base 21 is slidably provided with a sliding seat 23 close to or far from the fixed seat 22. Two left end positioning blocks 221 are transversely fixed on the top surface of the fixing seat 22, two right end positioning blocks 231 are transversely fixed on the top surface of the sliding seat 23, and the two left end positioning blocks 221 and the two right end positioning blocks 231 are respectively used for clamping two ends of the metal laminate 1 for positioning. A rear positioning block 222 and a front pushing positioning component 223 are longitudinally and relatively fixed on the top surface of the fixing seat 22, and a rear positioning block 222 and a front pushing positioning component 223 are also longitudinally and relatively fixed on the top surface of the sliding seat 23. The two left end positioning blocks 221, the two right end positioning blocks 231, the two sets of rear side positioning blocks 222 and the front side pushing positioning assembly 223 form a square positioning space together, so that after the metal laminate 1 is placed in the square positioning space, the sliding seat 23 drives the two right end positioning blocks 231 to move towards the left end positioning blocks 221 by a predetermined distance, and then the left end and the right end of the metal laminate 1 are clamped for positioning. And the two front side pushing and positioning components 223 push the metal layer plate 1 to move towards the rear side positioning block 222 by a preset distance, and then the front side and the rear side of the metal layer plate 1 are positioned.

In this embodiment, the front pushing positioning assembly 223 includes a telescopic driving member 2231 fixed on the fixing base 22 and a push plate 2232 fixed at the telescopic end of the telescopic driving member 2231. The metal layer plate 1 is pushed to move and position by the push plate 2232.

The fixed seat 22 and the sliding seat 23 are respectively and oppositely provided with a turnover shaping mechanism 24 for clamping and shaping the side plate 15 of the metal laminate 1 by matching with the rear side positioning block 222 and the push plate 2232 of the front side pushing positioning component 223, so as to prevent the product from deforming and improve the product quality. Two sets of pressing and shaping mechanisms 25 are oppositely arranged on the fixed seat 22, and two sets of pressing and shaping mechanisms 25 are oppositely arranged on the sliding seat 23, so that welding can be carried out on welding positions at four corners of the metal layer plate 1 through the welding robot 3 after pressing and shaping.

The welding system for the metal laminate is matched with the welding robot 3 by arranging the metal laminate positioning device 2. The metal laminate 1 to be welded is placed in a square positioning space formed on the fixed seat 22 and the sliding seat 23, and the right end positioning block 231 is driven by the sliding seat 23 to move for a predetermined distance, so that the left end and the right end of the metal laminate 1 are positioned. The front side pushing positioning component 223 acts to position the front and back sides of the metal layer plate 1. Through the overturning shaping mechanisms 24 respectively and oppositely arranged on the fixed seat 22 and the sliding seat 23 and the matched rear side positioning block 222 and the push plate 2232, the side plates 15 of the metal laminate 1 are clamped and shaped, the verticality of the side plates 15 is ensured, and accurate butt joint of the four corners of the metal laminate 1 is facilitated. After the four corners of the metal laminate 1 are pressed and shaped by the pressing and shaping mechanism 25, the welding is carried out by the welding robot 3. So, can guarantee that welding position is accurate, the welding is firm, easily realizes the automated production of big batch metal laminate 1, is favorable to improving production efficiency and production security, reduces workman intensity of labour.

A sliding driving mechanism 26 is arranged between the machine base 21 and the sliding base 23, the sliding driving mechanism 26 comprises two parallel sliding rails fixed on the top surface of the machine base 21, and a sliding block is fixed on the bottom surface of the sliding base 23 and is arranged on the sliding rails in a sliding manner. The machine base 21 is provided with a driving piece for driving the sliding seat 23 to slide back and forth along the sliding rail. The driving part is fixed on the top surface of the base 21 and is positioned between two parallel sliding rails, the driving part adopts a cylinder, and a piston rod of the cylinder is connected with the sliding seat 23. The sliding seat 23 is driven to slide back and forth along the sliding rail by the telescopic action of the cylinder. The design structure is simple, the reciprocating sliding action of the sliding seat 23 is easy to realize, and the running stability is ensured.

Referring to fig. 6, in the present embodiment, the turnover shaping mechanism 24 includes two bearing blocks 241 relatively fixed to the sliding block 23, and a turnover shaft 242 is rotatably mounted on the two bearing blocks 241 through bearings. An overturning driving member 243 for driving the overturning shaft 242 to overturn reciprocally is installed at the outer side of one bearing seat 241. The overturning driving member 243 is preferably an overturning cylinder, the overturning cylinder is fixed on the outer side surface of the bearing seat 241, and an output shaft of the overturning cylinder is connected with the overturning shaft 242 so as to drive the overturning shaft 242 to overturn in a reciprocating manner. The turning shaft 242 is fixedly connected with a turning frame 244, one end of the turning frame 244 is fixed on the turning shaft 242, and the other end of the turning frame 244 extends out along the radial direction of the turning shaft 242. Shaping components 245 are respectively fixed on two sides of the extending end of the roll-over stand 244 for being matched with the rear side positioning block 222 and the front side pushing positioning component 223 to clamp and shape the front side and the rear side of the metal laminate 1.

The turnover shaping mechanism 24 of the embodiment clamps and shapes the front and back sides of the metal laminate 1 by driving the shaping component 245 on the turnover frame 244 through the turnover shaft 242. After the roll-over stand 244 drives the shaping assembly 245 to turn outwards, the metal laminate 1 can be conveniently placed into the roll-over stand for positioning, so that the occupation of too much operation space is avoided, and the metal laminate 1 can be more conveniently taken and placed. After the metal laminate 1 is positioned, the shaping assembly 245 on the turning frame 244 is driven by the turning shaft 242 to turn into the cavity of the metal laminate 1, so that the shaping assembly 245 is matched with the rear side positioning block 222 and the front side pushing positioning assembly 223 to clamp and shape the front side and the rear side of the metal laminate 1. The turnover shaping mechanism 24 adopting the structure has the advantages of simple and compact structure and simple and convenient action control, can rapidly realize the shaping of the metal laminate 1, and is favorable for improving the attractive appearance of the metal laminate 1.

In this embodiment, the roll-over stand 244 includes two support bars 2441 and a roll-over plate 2442. The middle part of the turning shaft 242 is provided with a mounting groove matched with the support bars 2441 in size, and one end of each support bar 2441 is fixed in the corresponding mounting groove through a bolt and is vertical to the turning shaft 242. The other ends of the two support bars 2441 are fixed with a turning plate 2442, and the turning plate 2442 is connected with the two support bars 2441 in a T shape. The roll-over stand 244 adopting the structure has the advantages of simple structure, convenient processing, convenient installation and easy realization of stable roll-over action.

In this embodiment, the shaping assembly 245 includes a shaping driver 2451 and a shaping block 2452. The shaping driver 2451 is fixed at one end of the turnover plate 2442, and the shaping block 2452 is fixed at the driving end of the shaping driver 2451. The shaping block 2452 is driven by the shaping driving member 2451 to abut against the reinforcing plate 17 of the metal laminate 1 for shaping. The shaping driving piece 2451 is preferably a cylinder driving piece, so that the telescopic shaping action is easy to realize and the manufacturing cost is low.

Referring to fig. 7 to 9, in the present embodiment, the pressing and shaping mechanism 25 includes a fixing frame 251, one end of the fixing frame 251 is fixed on the sliding seat 23, and the other end of the fixing frame 251 extends to the outside of the fixing frame 251. The top end of the fixing frame 251 is hinged with a swing arm 252, and one end of the swing arm 252 is fixed with a shaping mold 253 for shaping the four corners of the metal laminate 1. The bottom end of the fixing frame 251 is hinged with a base 254 extending out of the fixing frame 251, a jacking driving piece 255 is fixed on the base 254, and a jacking end of the jacking driving piece 255 is hinged to the other end of the swing arm 252 so as to drive the swing arm 252 and the shaping mold 253 to swing back and forth around the hinged position of the top end of the fixing frame 251.

The embodiment compresses tightly sizing mechanism 25 and drives swing arm 252 and sizing mould 253 to swing around the articulated department at mount 251 top and compress tightly the right angle welding position of metal laminate 1 to sizing mould 253 through jacking driving piece 255 to cooperate right-hand member locating piece 231 to carry out the nip pressure, thereby guarantee the accurate butt joint of the right angle welding position of metal laminate 1. The pressing and shaping mechanism 25 with the structural design has the advantages of compact structure, simple and convenient action control and easy realization of rapid shaping of the four corners of the metal laminate 1.

In this embodiment, the fixing frame 251 includes a supporting plate and an L-shaped connecting rod, one end of the L-shaped connecting rod is fixed on the supporting plate, and the other end is fixed on the fixing frame 251. A hinge seat 256 is fixed on the swing arm 252, and the bottom end of the hinge seat 256 is hinged to the top end of the support plate through a hinge shaft 257. The jacking actuators 255 are hinged to the bottom end of the support plate by bases 254. The jacking driving member 255 is preferably a jacking cylinder, the base 254 is fixed on the top surface of the jacking cylinder, and the piston rod end of the jacking cylinder is hinged to one end of the swing arm 252.

In order to limit the turning angle of the shaping mold 253 and avoid crushing the metal laminate 1, a limiting block 258 is fixed at the position, close to the hinge seat 256, of the top end of the supporting plate of the fixing frame 251, a limiting groove with an upward opening is formed in the limiting block 258, and the swing arm 252 is located in the limiting groove of the limiting block 258 when pressing down the metal laminate 1.

Referring to fig. 10, the forming mold 253 includes a connecting section 2531 and a mold section 2532 integrally connected in an L-shape. One end of the connecting section 2531 is fixed on the swing arm 252. The extending end of the mold section 2532 is downwardly protruded with a pressing block 2533, and the lower surface of the pressing block 2533 is downwardly protruded with a shaping block 2534 matched with the hanging hole 10 of the metal laminate 1, so that when the pressing block 2533 downwardly presses the end welding part of the flat plate 16 of the metal laminate 1, the shaping block 2534 is embedded into the hanging hole 10 and is matched with the right end positioning block 231 for clamping and shaping. Therefore, the metal laminate plate 1 can be prevented from deforming during welding, and the welding quality is improved. The mold sections 2532 are wedge-shaped blocks, the top surfaces of which are gradually inclined downwardly from the fixed ends to the extended ends.

Referring to fig. 4, the welding robot 3 includes a movable robot arm 31 and a laser welding head 32 fixed to a free end of the movable robot arm 31. The movable mechanical arm 31 is used for driving the laser welding head 32 to lift, translate and rotate, so that the laser welding head 32 can move to the four-corner welding position of the metal layer plate 1 respectively for welding. Laser welding is an efficient precision welding method using a laser beam with high energy density as a heat source, and is suitable for precision welding of a metal laminate 1.

The invention also provides a welding method using the welding system. The method comprises the following steps: the metal laminate 1 to be welded is placed in a square positioning space formed on the fixed seat 22 and the sliding seat 23, and the right end positioning block 231 is driven by the sliding seat 23 to move for a predetermined distance, so that the left end and the right end of the metal laminate 1 are positioned. The front side pushing positioning component 223 acts to position the front and back sides of the metal layer plate 1. The side plates 15 of the metal laminate 1 are clamped and shaped by the overturning and shaping mechanisms 24 respectively arranged on the fixed seat 22 and the sliding seat 23 oppositely and the rear side positioning block 222 and the front side pushing and positioning component 223 matched with the overturning and shaping mechanisms. After the four corners of the metal laminate 1 are pressed and shaped by the pressing and shaping mechanism 25, the welding is carried out by the welding robot 3. So, can guarantee that welding position is accurate, the welding is firm, easily realizes the automated production of big batch metal laminate 1, is favorable to improving production efficiency and production security, reduces workman intensity of labour.

Any combination of the various embodiments of the present invention should be considered as disclosed in the present invention, unless the inventive concept is contrary to the present invention; within the scope of the technical idea of the invention, any combination of various simple modifications and different embodiments of the technical solution without departing from the inventive idea of the present invention shall fall within the protection scope of the present invention.

Claims

1. A welding system for metal laminates comprises a metal laminate positioning device (2) and a welding robot (3), and is characterized in that the metal laminate positioning device (2) comprises a machine base (21), a fixed base (22) is fixed at one end of the top surface of the machine base (21), a sliding base (23) is arranged at the other end of the top surface of the machine base (21) in a sliding manner close to or far away from the fixed base (22), a left end positioning block (221) is transversely fixed on the top surface of the fixed base (22), a right end positioning block (231) is transversely fixed on the top surface of the sliding base (23), the two left end positioning blocks (221) and the two right end positioning blocks (231) are respectively used for clamping two ends of a metal laminate (1) for positioning, a rear side positioning block (222) and a front side pushing positioning component (223) are longitudinally and relatively fixed on the top surface of the fixed base (22), a rear side positioning block (222) and a front side pushing positioning component (223), left end locating piece (221), right-hand member locating piece (231), rear side locating piece (222) and front side push positioning component (223) form square location space jointly, after for putting into metal laminate (1), drive two right-hand member locating pieces (231) through sliding seat (23) and remove the predetermined distance towards left end locating piece (221) after, both ends location about centre gripping metal laminate (1), rethread two front sides push positioning component (223) push metal laminate (1) towards the front and back side of rear side locating piece (222) removal predetermined distance after location metal laminate (1), welding robot (3) are used for welding the metal laminate after metal laminate positioner (2) location.

2. The welding system for the metal laminate plates as claimed in claim 1, wherein the fixed seat (22) and the sliding seat (23) are respectively and oppositely provided with a turnover shaping mechanism (24) for cooperating with the rear side positioning block (222) and the front side pushing positioning assembly (223) to clamp and shape the side plate (15) of the metal laminate plate (1), two sets of pressing and shaping mechanisms (25) are oppositely arranged on the fixed seat (22), and two sets of pressing and shaping mechanisms (25) are oppositely arranged on the sliding seat (23) so as to weld the welding positions at the four corners of the metal laminate plate (1) through the welding robot (3) after pressing and shaping.

3. The welding system for the metal laminate plates as claimed in claim 2, wherein the turnover shaping mechanism (24) comprises two bearing seats (241) relatively fixed on the sliding seat (23), the two bearing seats (241) are rotatably provided with turnover shafts (242) through bearings, a turnover driving member (243) for driving the turnover shafts (242) to turn over in a reciprocating manner is arranged outside one bearing seat (241), the turnover shaft (242) is fixedly connected with a turnover frame (244), one end of the turnover frame (244) is fixed on the turnover shaft (242), the other end of the turnover frame (244) extends out along the radial direction of the turnover shaft (242), and shaping assemblies (245) are respectively fixed on two sides of the extending end of the turnover frame (244) so as to be matched with the rear side positioning block (222) and the front side pushing positioning assembly (223) to clamp and shape the front and rear sides of the metal laminate plate (1).

4. The welding system for metal sheets according to claim 3, wherein the shaping assembly (245) comprises a shaping driver (2451) and a shaping block (2452), the shaping driver (2451) being fixed to the roll-over stand (244), the shaping block (2452) being fixed to the drive end of the shaping driver (2451).

5. The welding system for the metal laminate plates as claimed in claim 2, wherein the pressing and shaping mechanism (25) comprises a fixing frame (251), one end of the fixing frame (251) is fixed on the sliding seat (23), the other end of the fixing frame (251) extends out of the fixing frame (251), a swing arm (252) is hinged to the top end of the fixing frame (251), a shaping mold (253) for shaping the four corners of the metal laminate plate (1) is fixed to one end of the swing arm (252), a base (254) extending out of the fixing frame (251) is hinged to the bottom end of the fixing frame (251), a jacking driving member (255) is fixed to the base (254), and a jacking end of the jacking driving member (255) is hinged to the other end of the swing.

6. Welding system for metal sheets according to claim 5, characterised in that said oscillating arm (252) has a hinged seat (256) fixed thereto, the bottom end of the hinged seat (256) being hinged to the top end of the fixed frame (251) by means of a hinging shaft (257).

7. The welding system for the metal layers according to claim 5, wherein a limiting block (258) is fixed at the top end of the fixing frame (251) close to the hinge seat (256), a limiting groove with an upward opening is formed in the limiting block (258), and the swing arm (252) is positioned in the limiting groove of the limiting block (258) when pressing down the metal layer (1).

8. The welding system for the metal laminate of claim 5, wherein the sizing die (253) comprises a connecting section (2531) and a die section (2532) which are integrally connected in an L shape, one end of the connecting section (2531) is fixed on the swing arm (252), a pressing block (2533) protrudes downwards from the extending end of the die section (2532), and a sizing block (2534) matched with the hanging hole (10) of the metal laminate (1) protrudes downwards from the lower surface of the pressing block (2533).

9. The welding system for metal layers according to claim 1, wherein the welding robot (3) comprises a movable mechanical arm (31) and a laser welding head (32) fixed at the free end of the movable mechanical arm (31), the movable mechanical arm (31) is used for driving the laser welding head (32) to lift, translate and rotate, so that the laser welding head (32) can move to the four-corner welding position of the metal layer (1) respectively for welding.

10. A welding method for a welding system for metal laminates, comprising the steps of: the metal laminate (1) to be welded is placed in a square positioning space formed on a fixed seat (22) and a sliding seat (23), a right end positioning block (231) is driven to move for a preset distance through the sliding seat (23), the left end and the right end of the metal laminate (1) are positioned, a front side pushing positioning assembly (223) moves, the front side and the rear side of the metal laminate (1) are positioned, a turnover shaping mechanism (24) and a rear side positioning block (222) and a front side pushing positioning assembly (223) which are matched with the turnover shaping mechanism are respectively and oppositely arranged on the fixed seat (22) and the sliding seat (23), side plates (15) of the metal laminate (1) are clamped and shaped, four corner welding positions of the metal laminate (1) are pressed and shaped through a pressing shaping mechanism (25), and then welding is carried out through a welding robot (3).