CN114985979A

CN114985979A - Automatic laser cutting welding equipment

Info

Publication number: CN114985979A
Application number: CN202210763122.0A
Authority: CN
Inventors: 戴家文
Original assignee: Suzhou Toflylaser Technology Co ltd
Current assignee: Suzhou Toflylaser Technology Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-09-02
Anticipated expiration: 2042-06-29
Also published as: CN114985979B

Abstract

The invention provides automatic laser cutting and welding equipment, which comprises a cutting mechanism, a welding mechanism and a welding mechanism, wherein the cutting mechanism is used for cutting a strip-shaped workpiece I into blocky semi-finished products according to a set width; the transfer mechanism is used for pressing the semi-finished product during cutting and transferring the semi-finished product to the welding mechanism after cutting is finished; the welding mechanism is used for welding the semi-finished product on a second workpiece and comprises a welding table, a lifting table, a pressing block and a laser welding device, the welding table is fixedly installed, and a first hole matched with the pressing block is formed in the welding table; after the lifting platform is lifted by the Z-axis driving piece I, clamping a second workpiece between the welding platform and the lifting platform, and placing the semi-finished product in the first hole and supporting the second workpiece; and the pressing block is driven by the Z-axis driving piece II to tightly press the semi-finished product, and a welding cavity for the laser of the laser welding device to pass through is reserved. The invention has the advantages of compact and simple structure, smooth working beat and high processing precision.

Description

Automatic laser cutting welding equipment

Technical Field

The invention belongs to the technical field of laser processing equipment, and particularly relates to automatic laser cutting and welding equipment.

Background

In the welding process of some products, a roll-shaped workpiece is required to be cut into small pieces according to a set length, and then the small pieces of the workpiece are welded to another piece of the sheet-shaped workpiece.

For example, patent publication No. CN210255076U discloses a splicing and welding apparatus for a material strip, which includes a frame, a cutting device, a clamping and positioning device, a conveying device, and a laser welding device. The cutting device is used for cutting the material belt to be spliced and welded; the clamping and positioning device is used for clamping and fixing the two material strips to be tailor-welded when the butt ends of the two material strips to be tailor-welded are in butt joint; the conveying path of the conveying device sequentially passes through the cutting device, the grinding device and the clamping and positioning device, and the conveying device is used for conveying the material belt to be spliced and welded from the cutting device to the grinding device and from the grinding device to the clamping and positioning device; the laser welding device is used for welding and connecting the two welding material belts to be spliced. When the device works, the conveying device firstly conveys the two material strips to be welded to the cutting device so as to cut and form the butt ends of the two material strips to be welded, the two material strips to be welded after being cut can be conveyed to the clamping and positioning device, the butt ends of the two material strips to be welded are butted and positioned, and the two material strips to be welded after being butted and positioned can be welded and connected under the action of laser beams emitted by the laser welding device.

However, the shifting of the workpieces among the cutting device, the clamping and positioning device and the conveying device of the tailor welding equipment is relatively independent, the workpieces are pressed and fixed by the pressing piece in the cutting assembly during cutting, the workpieces need to be shifted by the material carrying mold of the clamping and positioning device again after cutting is finished, and are clamped and positioned on the welding device by the pressing contact block, the tailor welding equipment is large in number of parts and heavy in structure, welding precision is affected due to accumulation of multiple positioning errors, the action rhythm is lengthened in multiple shifting and positioning processes, and therefore working efficiency is affected to a certain extent.

Disclosure of Invention

The invention aims to provide automatic laser cutting and welding equipment to solve the problems of overstaffed structure, insufficient machining precision and efficiency of cutting and welding integrated equipment.

The invention provides the following technical scheme:

an automatic laser cutting welding apparatus comprising:

the cutting mechanism is used for cutting the first strip-shaped workpiece into blocky semi-finished products according to a set width;

the transfer mechanism is used for pressing the semi-finished product during cutting and transferring the semi-finished product to the welding mechanism after the cutting is finished;

welding mechanism for weld the semi-manufactured goods on work piece two, welding mechanism includes welding bench, elevating platform, briquetting and laser-beam welding ware, wherein:

the welding table is fixedly installed, and a first hole matched with the pressing block is formed in the welding table;

the lifting platform is lifted by the Z-axis driving piece I, then a second workpiece is clamped between the welding platform and the lifting platform, and the semi-finished product is placed in the first hole and supported by the second workpiece; and the pressing block is driven by a Z-axis driving piece II to tightly press the semi-finished product, and a welding cavity for laser of the laser welding device to pass is reserved.

Preferably, the transfer mechanism comprises an X-axis linear module, a Z-axis driving part III, a pressure rod and suction nozzles, the Z-axis driving part III is transferred between the cutting mechanism and the welding mechanism through the X-axis linear module, the pressure rod is installed on the Z-axis driving part III, the two suction nozzles are fixed at the front end of the pressure rod, and the suction nozzles are driven by the Z-axis driving part III to move downwards until the semi-finished products are compressed and adsorbed;

the two suction nozzles are matched with the Z-axis driving piece III through the X-axis linear module to place a semi-finished product into the first hole, and the two suction nozzles correspond to the positions of the two welding cavities;

the briquetting is equipped with the pressure claw of front side open-ended, the welding chamber is located between two adjacent pressure claws.

Preferably, the second workpiece is provided with a positioning hole, the welding table is provided with a positioning column matched with the positioning hole, and the positioning column is pressed into the positioning hole when the second workpiece is clamped by the lifting table and the welding table.

Preferably, the side wall of the pressing block is provided with a pushing block and a sliding chute, the pushing block is fixed above the vertical sliding chute, and a sliding rod is installed in the sliding chute;

the bottom of the sliding rod extends out of the sliding groove and is bent in an L shape, the sliding rod is hinged in the lifting platform, and the other end of the sliding rod is provided with a support pillar;

during blanking, after the lifting platform is lowered, the pressing block is driven by the second Z-axis driving piece to descend for a second stroke so as to push and press the second workpiece, and meanwhile, the pushing block downwards extrudes the sliding rod, so that the top column on the other side of the sliding rod upwards pushes and presses the positioning column, and the positioning column is separated from the second workpiece.

Preferably, the sliding rod comprises a sliding part and a rotating part, and the sliding part is slidably mounted in the sliding groove; one end of the rotating part is hinged to the bottom end of the sliding part, and the other end of the rotating part is provided with the top column.

Preferably, the left side and the right side of the top of the sliding part are provided with limiting lugs, a limiting step is correspondingly arranged below the limiting lugs on the pressing block to prevent the sliding rod from being separated from the sliding groove, and the limiting step extends upwards to be flush with the top of the sliding groove; when the pressing block is reset upwards, the limiting step lifts the limiting bump, so that the sliding rod is automatically reset.

Preferably, a long-strip-shaped sliding rod cavity extending along the Y-axis direction is formed in the lifting platform, and the sliding rod rotates in the sliding rod cavity.

Furthermore, an iron sheet is fixed at the top of the positioning column, an electromagnet is fixedly installed above the iron sheet in the welding table, and a compression spring is installed between the electromagnet and the iron sheet;

when the electromagnet is electrified, the positioning column is upwards jacked by the jacking column until the positioning column is attracted by the electromagnet;

when the electromagnet is powered off and the top column is reset, the positioning column is downwards extruded to the initial height by the compression spring.

Further, draw material mechanism to include the plummer, be equipped with the step one that is used for fixing a position work piece left and right sides and be used for fixing a position work piece front end step two on the plummer.

Furthermore, the material pulling mechanism also comprises a Y-axis driving part, a material pulling plate, a first pressing plate, a fourth Z-axis driving part, a second pressing plate and a fifth Z-axis driving part;

the material pulling plate is arranged behind the bearing table and is driven by the Y-axis driving piece to translate;

the bottom of the material pulling plate is provided with a Z-axis driving part IV, a piston rod of the Z-axis driving part IV penetrates through the material pulling plate and then is connected with the first pressing plate, and the Z-axis driving part IV lowers the first pressing plate to tightly press the first workpiece on the material pulling plate;

the bottom of the bearing table is provided with a Z-axis driving piece V, a piston rod of the Z-axis driving piece V penetrates through the bearing table and then is connected with a second pressing plate, and the Z-axis driving piece V lowers the second pressing plate to tightly press the first workpiece on the bearing table;

and when the material is pulled, the Z-axis driving piece IV and the Z-axis driving piece V alternately press the workpiece I.

The invention has the beneficial effects that:

the shifting mechanism provided by the invention is matched with the cutting mechanism to tightly press the first workpiece during cutting, so that the cutting precision is improved, the shifting mechanism directly shifts the semi-finished product onto the welding mechanism after cutting is finished, the semi-finished product is not required to be clamped for the second time in the midway, the positioning error is reduced, and the working beat is accelerated. According to the welding mechanism, the lifting table and the welding table are matched to clamp the second workpiece, the lifting pressing block is arranged above the welding table, the first hole is formed in the welding table, the semi-finished product is placed in the first hole and supported by the second workpiece, and the pressing block presses the semi-finished product onto the second workpiece during welding, so that the welding precision is guaranteed.

The suction nozzle can be matched with the cutting mechanism to press a workpiece I, can transfer the cut semi-finished product to the welding mechanism immediately, is matched with the pressing block to smoothly and accurately transfer the semi-finished product, ensures the smoothness of working beats, and has compact structure and high transfer precision. According to the invention, the welding cavity is positioned between the adjacent pressing claws and is matched with the suction nozzle of the transfer mechanism in position, on one hand, the suction nozzle can fix different positions of the semi-finished product in a staggered manner with the pressing claws of the pressing block, and the suction nozzle and the pressing claws are not interfered with each other, on the other hand, after the suction nozzle is moved away, the semi-finished product and the workpiece are welded and fixed through the welding cavity by laser, so that the semi-finished product can be continuously pressed while being welded, and the product deviation is prevented.

The positioning columns in the welded platforms of the second workpiece are accurately positioned, so that the welding precision is further ensured. After welding is completed, the lifting platform is lowered, at the moment, a second workpiece can be clamped by the positioning column due to tight fit between the positioning column and the positioning hole and cannot freely fall on the lifting platform, therefore, the side wall of the pressing block is provided with the push block and the vertical sliding groove, the push block is fixed above the sliding groove, the sliding rod is installed in the sliding groove, the bottom of the sliding rod extends out of the sliding groove and is bent in an L shape, the sliding rod is hinged in the lifting platform, and the other end of the sliding rod is provided with the ejection column. The pressing block is driven by the Z-axis driving piece II to descend for a second stroke so as to continuously push and press the front end of the workpiece II downwards, meanwhile, the pushing block downwards extrudes the sliding rod, the top column on the other side of the sliding rod upwards pushes and presses the positioning column to separate the positioning column from the positioning hole of the workpiece II, at the moment, the tight fit between the positioning column and the positioning hole disappears, and the front end of the workpiece II is also pressed downwards by the pressing block, so that the workpiece II can smoothly fall off from the welding table.

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 principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a partial schematic of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

FIG. 4 is a schematic view of the process of transferring the semi-finished product to a welding mechanism and transferring the semi-finished product to a pressing block for pressing by a suction nozzle;

FIG. 5 is a schematic top view of the pressing block and the suction nozzle for pressing the semi-finished product together;

FIG. 6 is a schematic view of the compact before it compacts the semi-finished product as viewed from the direction B-B in FIG. 5;

FIG. 7 is a schematic view of the pressing block pressing the semi-finished product as viewed from the direction B-B in FIG. 5;

FIG. 8 is a view from the direction B-B in FIG. 5 showing the pressing block pushing away the work piece from the welding table;

fig. 9 is a schematic top view of a first workpiece positioning stage of the material pulling mechanism.

Labeled as: 1. a cutting mechanism; 11. a laser cutter; 2. a transfer mechanism; 21. an X-axis linear module; 22. a Z-axis driving part III; 23. a pressure lever; 24. a suction nozzle; 3. a welding mechanism; 31. a welding table; 311. a first hole; 312. a positioning column; 313. iron sheets; 314. a guide blind hole; 315. an electromagnet; 316. a compression spring; 32. a lifting platform; 321. a workpiece positioning groove; 322. a ram cavity; 33. briquetting; 331. pressing claws; 332. a welding cavity; 333. a push block; 334. a chute; 335. a limiting step; 34. a laser welder; 35. a first Z-axis driving part; 36. a Z-axis driving part II; 37. a slide bar; 371. a top pillar; 372. a sliding part; 373. a rotating part; 374. a limiting bump; 4. a material pulling mechanism; 41. a bearing table; 411. a step I; 412. a step II; 413. a strip-shaped hole; 43. a material pulling plate; 44. pressing a first plate; 46. pressing a second plate; 47. a Z-axis driving piece V; 51. a first workpiece; 511. cutting a line; 52. a second workpiece; 521. positioning holes; 53. semi-finished products; 6. and a frame.

Detailed Description

Example 1

As shown in fig. 1 to 8, an automatic laser cutting and welding apparatus includes: cutting mechanism 1, move and carry mechanism 2 and welding mechanism 3.

The cutting mechanism 1 is used for cutting the strip-shaped workpiece 51 into block-shaped semi-finished products 53 according to a set width. The transfer mechanism 2 compresses the semi-finished product during cutting, and transfers the semi-finished product to the welding mechanism 3 after cutting. The welding mechanism 3 is used for welding the semi-finished product on the second workpiece 52. The first workpiece 51 and the second workpiece 52 may be made of a soft metal material such as nickel copper, but are not limited to the above metals.

Specifically, referring to fig. 1 and 2, the cutting mechanism 1 includes a laser cutter 11, and a first workpiece is placed on a carrying table 41 and cut by the laser cutter 11 above according to a fixed length.

The transfer mechanism 2 comprises an X-axis linear module 21, a Z-axis driving part III 22, a pressure rod 23 and suction nozzles 24, the Z-axis driving part III 22 is transferred between the cutting mechanism 1 and the welding mechanism 3 through the X-axis linear module 21, the pressure rod 23 is horizontally installed on a piston rod of the Z-axis driving part III 22, the two suction nozzles 24 are fixed at the front end of the pressure rod 23, the suction nozzles 24 are connected with a negative pressure generator through air pipes, and the pressure rod 23 is driven by the Z-axis driving part III 22 to move downwards until the suction nozzles 24 compress and adsorb semi-finished products.

The welding mechanism 3 includes a welding stage 31, an elevating stage 32, a pressing block 33, and a laser welder 34.

Referring to fig. 2 to 5, the welding table 31 is fixedly installed on the frame, and the lower side of the welding table 31 is supported by four columns. The welding table 31 is provided with a first hole 311 matched with the pressing block 33, and the pressing block 33 can be downwards inserted into the first hole 311.

The lifting table 32 is located below the welding table 31, a distance is reserved between the initial height of the lifting table and the welding table 31, a workpiece positioning groove 321 is formed in the table surface of the lifting table 32, and the second workpiece 52 is positioned in the workpiece positioning groove 321 before welding. The lifting platform 32 is arranged on the first Z-axis driving piece 35, the second workpiece 52 is clamped between the welding platform 31 and the lifting platform 32 after the first Z-axis driving piece 35 is lifted, the front end of the second workpiece is exposed under the first hole 311, and then the semi-finished product is placed in the first hole 311 and supported by the second workpiece and the lifting platform 32.

Referring to fig. 3, a second Z-axis driving member 36 is mounted on the welding table 31, a pressing block 33 is mounted on a piston rod of the second Z-axis driving member 36, before welding, the pressing block 33 is driven by the second Z-axis driving member 36 to move downward until a semi-finished product is pressed onto a second workpiece, the pressing block 33 includes at least three pressing claws 331 extending along the Y-axis direction, a welding cavity 332 for laser of the laser welding device 34 to pass through is reserved between adjacent pressing claws 331, a front side of the welding cavity 332 is open so as to avoid the suction nozzle 24, and the pressing claws 331 press the semi-finished product during welding.

Referring to fig. 4, the two suction nozzles 24 are matched by the X-axis linear module 21 and the Z-axis driving member three 22 to place the semi-finished product into the hole one 311, and the two suction nozzles 24 are made to correspond to the positions of the two welding cavities 332, then the Z-axis driving member two 36 lowers the pressing block 33, so that the pressing claw 331 presses the semi-finished product, the suction nozzles 24 break vacuum, and the X-axis linear module 21 and the Z-axis driving member three 22 are matched to return to the cutting mechanism 1.

Referring to fig. 6 to 8, in order to more accurately position the workpiece and prevent the second workpiece from displacing during the lifting and clamping processes, a positioning hole 521 is formed in the second workpiece, a positioning post 312 matched with the positioning hole 521 is installed on the welding stage 31, when the second workpiece 52 is clamped by the lifting stage 32 and the welding stage 31, the positioning post 312 is pressed into the positioning hole 521 to position the second workpiece on the welding stage 31, and the bottom of the positioning post 312 does not protrude out of the positioning hole 521. At this time, the positioning column 312 is clamped in the positioning hole 521, and the positioning hole 521 is tightly fitted to a certain extent, and since the nickel-copper material is soft and easy to deform, when the nickel-copper material is positioned by the positioning column 312 and clamped by the welding table 31, the nickel-copper material is easily clamped on the positioning column 312, so that the second workpiece cannot be smoothly moved away during blanking, the second workpiece needs to be pulled downwards first, and the second workpiece is easily damaged or obviously folded or deformed by being pulled forcibly.

In order to solve this problem, a push block 333 and a vertical slide groove 334 are provided on the side wall of the press block 33, and the push block 333 is fixed above the slide groove 334.

A sliding rod 37 is arranged in the sliding groove 334, the bottom of the sliding rod 37 extends out of the sliding groove 334 and is bent in an L shape, and in an initial state, the top of the sliding rod 37 is positioned at the lower side of the sliding groove 334 and is far away from the push block 333; during welding, the pressing block 33 moves downwards for the first stroke to press the semi-finished product, and the top of the sliding rod 37 is close to the pushing block 333.

The sliding rod 37 is hinged in the lifting platform 32, the other end of the sliding rod 37 is fixedly provided with a top column 371, and the diameter of the top column 371 is smaller than that of the positioning hole.

During blanking, after the lifting platform 32 is lowered by the first Z-axis driving piece 35, the second workpiece is clamped on the welding platform 31, the press block 33 is driven by the second Z-axis driving piece 36 to descend for a second stroke, so that the press claw 331 pushes the front end of the second workpiece downwards, meanwhile, the push block 333 pushes the sliding rod 37 downwards, the top column 371 on the other side of the sliding rod 37 pushes the positioning column 312 upwards, and the positioning column 312 is separated from the second workpiece.

The sliding rod 37 includes a sliding portion 372 and a rotating portion 373, wherein the sliding portion 372 is linear and is slidably mounted in the sliding groove 334; one end of the rotating portion 373 is hinged to the bottom end of the sliding portion 372, and the other end is provided with a top post 371.

In order to enable the sliding rod 37 to be reset smoothly and ensure the continuity and repeatability of the work of the sliding rod 37, the left side and the right side of the top of the sliding part 372 are provided with limit lugs 374, a limit step 335 is correspondingly arranged below the limit lugs 374 on the pressing block 33, the limit lugs 374 are positioned above the limit steps 335, the limit steps 335 can prevent the sliding rod 37 from being separated from the sliding groove 334, and the limit steps 335 extend upwards to be flush with the top of the sliding groove 334; when the pressing block 33 is reset upwards to the initial height, the limit step 335 lifts the limit bump 374, so that the sliding rod 37 is automatically reset.

A long strip-shaped sliding rod cavity 322 extending along the Y-axis direction is formed in the lifting table 32, and the sliding rod cavity 322 provides a moving space for the sliding rod 37, so that the sliding rod 37 can rotate in the sliding rod cavity 322. The slide bar cavity 322 is a strip-shaped cavity, occupies a small area, and is staggered with the welding position of the second workpiece, so that the second workpiece can still be reliably supported by the lifting table 32.

In order to more reliably reset the positioning column 312, an iron sheet 313 is fixedly installed at the top of the positioning column 312, a precisely machined guiding blind hole 314 is arranged in the welding table 31, the positioning column 312 precisely moves up and down along the guiding blind hole 314, an electromagnet 315 is fixedly installed above the iron sheet 313 in the guiding blind hole 314, the electromagnet 315 is powered by a power supply, and a compression spring 316 is installed between the electromagnet 315 and the iron sheet 313.

When blanking, the electromagnet 315 is electrified, the press block 33 jacks up the positioning column 312 through the sliding rod 37, so that the iron sheet 313 on the positioning column 312 is attracted by the electromagnet 315.

After the blanking is completed, the electromagnet 315 is powered off, the pressing block 33 is reset downwards to the top post 371, and the positioning post 312 is pressed downwards to the initial height by the compression spring 316.

In this embodiment, the first Z-axis driving element 35, the second Z-axis driving element 36, and the third Z-axis driving element 22 can all be air cylinders.

Example 2

The first workpiece in this embodiment is made of a coil material, and needs to be unreeled and leveled, and is fed onto the cutting mechanism 1 according to a specific beat, so that the first workpiece in this embodiment is additionally provided with the pulling mechanism 4 on the basis of the first workpiece in this embodiment 1, so as to accurately pull the first workpiece to the cutting mechanism. Referring to fig. 1, 2 and 9, the drawing mechanism 4 includes a bearing table 41, the bearing table 41 is provided with a first step 411 for positioning the left side and the right side of the first workpiece 51 and a second step 412 for positioning the front end of the first workpiece 51, the first workpiece 51 is unreeled, leveled and then sent onto the bearing table 41, and is conveyed forward under the guiding action of the first step 411 until the front end of the first workpiece abuts against the second step 412, and then the first workpiece is pressed by the suction nozzle 24, and the first workpiece is cut by the laser cutter 11.

The material pulling mechanism 4 further comprises a Y-axis driving piece, a material pulling plate 43, a first pressing plate 44, a fourth Z-axis driving piece, a second pressing plate 46 and a fifth Z-axis driving piece 47.

The Y-axis driving part is installed on the bearing table 41, the rear side of the bearing table 41 is of an open top structure, the rear side of the bearing table 41 is movably provided with a pulling plate 43, the pulling plate 43 is fixed on a sliding block of the Y-axis driving part, and the Y-axis driving part drives the pulling plate to move horizontally along the Y-axis direction.

The cavity is arranged below the bearing table 41, a Z-axis driving part IV is arranged at the bottom of the material pulling plate 43, a piston rod of the Z-axis driving part IV penetrates through the material pulling plate 43 and then is connected with a first pressing plate 44, the first pressing plate 44 is located above the material pulling plate 43, and when the Z-axis driving part IV lowers the first pressing plate 44, the first workpiece is pressed on the material pulling plate 43 and then is driven by the Y-axis driving part to translate to the cutting station.

The bottom of the bearing table 41 is provided with a Z-axis driving piece five 47, a piston rod of the Z-axis driving piece five 47 penetrates through the bearing table 41 and then is connected with a pressing plate two 46, the pressing plate two 46 and the pressing plate one 44 are located on the same straight line, and the pressing plate two 46 is close to the front end of the workpiece one. When the second pressing plate 46 is lowered by the Z-axis driving member fifth 47, the first workpiece is pressed on the bearing table 41.

The material pulling process comprises the following steps: and the Z-axis driving piece five 47 raises the second pressing plate 46, the Z-axis driving piece four lowers the first pressing plate 44 to press the first workpiece on the pulling plate 43, and then the Y-axis driving piece drives the first workpiece to translate to the cutting station until the front end of the first workpiece abuts against the second step 412, and the Z-axis driving piece five 47 presses the second pressing plate 46 downwards to clamp the front end of the first workpiece to prepare for cutting the first workpiece.

The bearing table 41 is further provided with a strip-shaped hole 413 for the horizontal passing of the first workpiece, the strip-shaped hole 413 is arranged opposite to the suction nozzle 24 and is used for pressing the end part of the first workpiece together, and the laser irradiates to the position between the strip-shaped hole 413 and the suction nozzle and cuts the first workpiece along the cutting line 511.

In this embodiment, the cylinders can be selected for the Y-axis driving element, the Z-axis driving element four, and the Z-axis driving element five 47.

The working process of the embodiment is as follows:

feeding the workpiece I into a bearing table 41 of a material pulling mechanism 4 after unreeling and leveling, positioning the left side and the right side by a step I411, and mutually matching a Y-axis driving piece, a Z-axis driving piece IV, a Z-axis driving piece V47, a material pulling plate 43, a pressing plate I44 and a pressing plate II 46, and pulling the workpiece I to the position right below the cutting mechanism 1 according to a fixed length by the material pulling method;

a third Z-axis driving part 22 of the transfer mechanism 2 drives a pressure lever 23 to move downwards, so that a suction nozzle 24 presses the end part of the first workpiece, negative pressure is applied to the suction nozzle 24, and the cutting mechanism 1 starts to cut the first workpiece to obtain a semi-finished product;

placing a second workpiece on the lifting platform 32 manually or by a manipulator, positioning the second workpiece by the workpiece positioning groove 321 and the positioning column 312, then lifting the lifting platform 32 by the first Z-axis driving piece 35, clamping the second workpiece between the welding platform 31 and the lifting platform 32, and exposing the front end of the second workpiece below the first hole 311; meanwhile, the third Z-axis driving part 22 raises the pressure lever 23, the X-axis linear module 21 drives the suction nozzle 24 to carry the semi-finished product to move to the welding mechanism 3, and the semi-finished product is pressed on the second workpiece below the first hole 311;

the second Z-axis driving piece 36 drives the pressing block 33 to move downwards until the pressing claw 331 of the pressing block 33 presses the semi-finished product, at the moment, the suction nozzle 24 breaks vacuum, and the suction nozzle 24 returns to the cutting station through the cooperation of the X-axis linear module 21 and the third Z-axis driving piece 22;

the laser of the laser welder 34 welds the semi-finished product to the second workpiece through the welding cavity 332;

after the welding is finished, the lifting platform 32 is lowered by the first Z-axis driving piece 35, the pressing block 33 is driven by the second Z-axis driving piece 36 to continue to be pressed downwards for the second stroke, the pressing block 33 pushes the second workpiece and the semi-finished product downwards on one hand, and pushes the sliding rod 37 downwards through the pushing block 333 on the other hand, so that the positioning column 312 is jacked up by the jacking column 371 at the other end of the sliding rod 37 and is sucked by the electromagnet 315, the two actions are matched, the second workpiece can smoothly fall off from the positioning column 312 (namely the welding platform 31), and then the welding finished product is taken away manually or by a manipulator;

the electromagnet 315 is powered off, and the bottom of the positioning column 312 is pushed out of the guiding blind hole 314 downwards by the compression spring 316; the second Z-axis driving piece 36 resets the pressing block 33 upwards to the initial height, the limit step 335 of the pressing block 33 lifts the sliding rod 37 upwards, and the sliding rod 37 is synchronously reset;

the processes are repeated continuously, and the work pieces are subjected to actions of pulling, cutting, transferring, clamping, welding, pushing and the like, so that batch processing is completed.

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 changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic laser cutting welding apparatus, comprising:

2. The automatic laser cutting and welding equipment of claim 1, wherein the transfer mechanism comprises an X-axis linear module, a third Z-axis driving member, a pressure bar and suction nozzles, the third Z-axis driving member is transferred between the cutting mechanism and the welding mechanism by the X-axis linear module, the pressure bar is mounted on the third Z-axis driving member, two suction nozzles are fixed at the front end of the pressure bar, and the suction nozzles are driven by the third Z-axis driving member to descend until the semi-finished products are compressed and adsorbed;

3. The automatic laser cutting and welding equipment of claim 1, wherein a positioning hole is formed in the second workpiece, a positioning column matched with the positioning hole is installed on the welding table, and the positioning column is pressed into the positioning hole when the second workpiece is clamped by the lifting table and the welding table.

4. The automatic laser cutting and welding apparatus of claim 3, wherein:

the side wall of the pressing block is provided with a pushing block and a sliding groove, the pushing block is fixed above the vertical sliding groove, and a sliding rod is installed in the sliding groove;

5. The automatic laser cutting and welding apparatus of claim 4, wherein the sliding bar includes a sliding portion and a rotating portion, the sliding portion being slidably mounted within the sliding slot; one end of the rotating part is hinged to the bottom end of the sliding part, and the other end of the rotating part is provided with the top column.

6. The automatic laser cutting and welding device of claim 5, wherein the left side and the right side of the top of the sliding part are provided with limiting lugs, a limiting step is correspondingly arranged on the pressing block below the limiting lugs, and the limiting step extends upwards until the limiting step is flush with the top of the sliding groove; when the pressing block is reset upwards, the limiting step lifts the limiting bump, so that the sliding rod is automatically reset.

7. The automatic laser cutting and welding device according to claim 4, wherein an elongated slide bar cavity extending in the Y-axis direction is formed in the lifting table, and the slide bar rotates in the slide bar cavity; and the welding position of the welding cavity and the welding position of the second workpiece are staggered.

8. The automatic laser cutting and welding apparatus of claim 4, wherein:

an iron sheet is fixed at the top of the positioning column, an electromagnet is fixedly installed above the iron sheet in the welding table, and a compression spring is installed between the electromagnet and the iron sheet;

when the electromagnet is electrified, the positioning column is upwards jacked by the jacking column until the iron sheet is attracted by the electromagnet;

when the electromagnet is powered off and the top column is reset downwards, the positioning column is pressed downwards to the initial height by the compression spring.

9. The automatic laser cutting and welding equipment according to any one of claims 1 to 8, further comprising a drawing mechanism for drawing a first workpiece into a position right below a laser cutter of the cutting mechanism according to a fixed length, wherein the drawing mechanism comprises a bearing table, and the bearing table is provided with a first step for positioning the left side and the right side of the first workpiece and a second step for positioning the front end of the first workpiece.

10. The automatic laser cutting and welding equipment of claim 9, wherein the material pulling mechanism further comprises a Y-axis driving part, a material pulling plate, a first pressing plate, a fourth Z-axis driving part, a second pressing plate and a fifth Z-axis driving part;

the bottom of the bearing table is provided with a fifth Z-axis driving piece, a piston rod of the fifth Z-axis driving piece penetrates through the bearing table and then is connected with a second pressing plate, and the fifth Z-axis driving piece descends the second pressing plate to tightly press the first workpiece on the bearing table;