CN113927184A

CN113927184A - Laser cutting device and control method

Info

Publication number: CN113927184A
Application number: CN202111456153.3A
Authority: CN
Inventors: 刘洋; 常勇
Original assignee: Guangdong Hongshi Laser Technology Co Ltd
Current assignee: Guangdong Hongshi Laser Technology Co Ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-01-14

Abstract

The invention relates to the technical field of laser cutting, in particular to a laser cutting device and a cutting method. The utility model provides a laser cutting device, includes feed mechanism, rollgang lathe, feeding unit, positioning unit and is used for the cutting to pass through feed mechanism places the cutting off machine tool of treating the cutting piece on the rollgang lathe, feed mechanism locates one side of rollgang lathe is used for being located feed mechanism treat on the cutting piece shifts to the rollgang lathe, feeding unit locates on the rollgang lathe and rather than sliding connection, be equipped with on the feeding unit and be used for the centre gripping treat the centre gripping subassembly of cutting piece, positioning unit locates on the rollgang lathe and be used for fixing treat the cutting piece. In the cutting process, the to-be-cut piece only horizontally moves on the conveying roller channel machine tool, so that the to-be-cut piece is prevented from rotating, the production cost is reduced, and the large-scale popularization and use are facilitated.

Description

Laser cutting device and control method

Technical Field

The invention relates to the technical field of laser cutting, in particular to a laser cutting device and a control method.

Background

The laser cutting has the advantages of high cutting efficiency, smooth cutting surface, high cutting quality and the like, so the laser cutting machine is widely applied, but the automatic cutting of large-scale section steel is a difficult point in the section bar cutting industry, particularly the cutting of a section groove, the most used equipment for cutting the section steel at present is special pipe cutting machine equipment, the working mode is that a chuck clamps a workpiece to rotate, and a cutting head is fixed to realize the cutting, the special pipe cutting machine equipment has high cost, high clamping precision requirement, complex chuck structure, complex whole equipment structure and is not beneficial to the large-scale popularization and use of the section steel cutting, meanwhile, a simple portable section steel plasma/flame cutting machine is also arranged on the market, can be used for cutting the section bar and the groove, the method is to realize the groove cutting process by using a method of manually adjusting the cutting torch angle, and the cutting precision of the equipment is not high, the manual operation is needed for walking, and the cutting torch adjustment efficiency is low. The Chinese patent application discloses a three-chuck zero-tailing cutting machine which is provided with a machine body, wherein a clamping and cutting device is arranged on the machine body, the clamping and cutting device comprises a front chuck and a rear chuck which are arranged on the machine body in a sliding manner and driven by a driving motor, a middle chuck assembly and a frame, and the cutting head is arranged on the frame, the frame is provided with a beam, the beam is arranged on the frame in a sliding manner, the beam is provided with a cutting head supporting plate, the cutting head supporting plate is arranged on the beam in a sliding manner, the cutting head is arranged on the cutting head supporting plate in a lifting manner, the middle chuck component comprises a fixed disc and a plurality of positioning blocks, the fixed disc is fixed on the lathe bed, the front chuck, the rear chuck and the fixed disc are coaxially arranged, each positioning block is distributed on the end face of the fixed disc, each positioning block is provided with a telescopic clamping jaw, and each telescopic clamping jaw is arranged on the corresponding positioning block in a sliding manner under the driving of a driving cylinder. The problem that produces unnecessary tubular product tails in the cutting process can be solved to a certain extent to this structure, but the chuck structure among this disclosed technical scheme is complicated, and manufacturing cost is higher, is unfavorable for using widely on a large scale of shaped steel cutting.

Disclosure of Invention

The invention provides a laser cutting device and a laser cutting method for solving the problems of complex chuck structure and high production cost in the prior art.

In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a laser cutting device, includes feed mechanism, rollgang lathe, feeding unit, positioning unit and is used for the cutting to pass through feed mechanism places the cutting off machine tool of treating the cutting piece on the rollgang lathe, feed mechanism locates one side of rollgang lathe is used for being located feed mechanism treat on the cutting piece shifts to the rollgang lathe, feeding unit locates on the rollgang lathe and rather than sliding connection, be equipped with on the feeding unit and be used for the centre gripping treat the centre gripping subassembly of cutting piece, positioning unit locates on the rollgang lathe and be used for fixing treat the cutting piece.

In this technical scheme, operating personnel will wait to cut the piece through feed mechanism and carry to conveying roller way lathe on, and the pay-off unit drives to wait to cut the piece and slide to positioning unit department on conveying roller way lathe, and positioning unit treats that the cutting piece is fixed, and cutting machine cuts the piece of waiting to cut after fixing. This technical scheme simple structure, at the in-process of whole cutting, treat that the piece of cutting has only the ascending removal of level on conveying roller way lathe, has avoided treating the rotation of cutting, has reduced manufacturing cost, is favorable to treating using widely on a large scale of cutting.

Preferably, the feeding unit further comprises a feeding main body connected with the roller conveyor machine tool in a sliding manner and a first driving assembly for driving the feeding main body to slide on the roller conveyor machine tool, the clamping assembly is arranged on the feeding main body, and the first driving assembly is connected with the feeding main body.

Preferably, the clamping assembly comprises a clamping claw, and a second driving assembly and a third driving assembly which are respectively used for driving the clamping claw to move horizontally and vertically, the clamping claw is installed on the second driving assembly, the second driving assembly is installed on the third driving assembly, the third driving assembly is installed on the roller conveyor machine tool and is in sliding connection with the roller conveyor machine tool, and the first driving assembly is connected with the third driving assembly.

Preferably, the gripper jaw comprises a support frame arranged on the second driving assembly, a first telescopic device, a first duck tongue plate and a second duck tongue plate, wherein the first duck tongue plate and the second duck tongue plate are used for clamping a piece to be cut, the first duck tongue plate is fixed on the support frame, the second duck tongue plate is arranged on a hinge shaft on the support frame and is hinged with the hinge shaft, the telescopic end of the first telescopic device is connected with one end of the second duck tongue plate, and the hinge shaft is located at one end, far away from the first telescopic device, of the support frame.

Preferably, the positioning unit comprises a plurality of rollers arranged on one side of the roller conveyor machine tool, a positioning block and a second telescopic device used for driving the positioning block to move towards the rollers, the positioning block is connected with the telescopic end of the second telescopic device, and the second telescopic device drives the positioning block to move so that two opposite side surfaces of the to-be-cut piece are respectively abutted to the rollers and the positioning block.

Preferably, the cutting machine comprises a bed body and a cutting assembly provided with a cutting head, the rollgang machine is located below the bed body, the cutting assembly is arranged on the bed body and can move in three directions of an X axis, a Y axis and a Z axis of the bed body, a swinging unit used for driving the cutting head to swing is further arranged in the cutting assembly, and the swinging unit is connected with the cutting head and drives the cutting head to rotate around the X axis and rotate around the Y axis.

Preferably, be equipped with mutually perpendicular's first slide rail and second slide rail on the lathe bed, the second slide rail is installed on the first slide rail and rather than sliding connection, the cutting subassembly still includes mount pad, mounting panel and is used for the drive the mount pad is in do elevating movement's fourth drive arrangement on the mounting panel, the mounting panel is installed on the second slide rail and rather than sliding connection, the mount pad is installed on the mounting panel and rather than sliding connection, fourth drive arrangement with the mount pad links to each other.

Preferably, a pressing assembly used for pressing the to-be-cut piece is further arranged on the lathe bed, and the pressing assembly is abutted to the top of the to-be-cut piece.

Preferably, the feeding mechanism comprises a first feeding mechanism for horizontally conveying the to-be-cut piece, the first feeding mechanisms are arranged on the same side of the roller conveyor machine tool in parallel, and a second feeding mechanism for conveying the to-be-cut piece on the first feeding mechanism to the roller conveyor machine tool is arranged at one end, close to the roller conveyor machine tool, of the first feeding mechanism.

The invention also provides a control method of the laser cutting device, which comprises the following steps:

s1: placing a to-be-cut piece on a feeding mechanism, and controlling the feeding mechanism to convey the to-be-cut piece to a conveying roller way machine tool through a controller;

s2: the clamping assembly is controlled by the controller to clamp one end of the to-be-cut piece and push the to-be-cut piece to move to the positioning unit on the conveying roller way machine tool along the longitudinal direction;

s3: the controller controls the positioning unit to clamp and fix the to-be-cut piece, and controls the pressing assembly to press the to-be-cut piece downwards and correct the curvature of the to-be-cut piece;

s4: and controlling the cutting machine tool to cut the fixed to-be-cut piece through the controller, and blanking the to-be-cut piece which is cut.

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

in the invention, an operator conveys a to-be-cut piece to a conveying roller way machine tool through a feeding mechanism, a feeding unit drives the to-be-cut piece to slide to a positioning unit on the conveying roller way machine tool, the positioning unit fixes the to-be-cut piece, and the cutting machine tool cuts the fixed to-be-cut piece. The cutting device has a simple structure, and the to-be-cut piece only horizontally moves on the conveying roller way machine tool in the whole cutting process, so that the rotation of the to-be-cut piece is avoided, the production cost is reduced, and the large-scale popularization and use of the to-be-cut piece are facilitated.

Drawings

FIG. 1 is a schematic view of the overall structure of a laser cutting apparatus according to the present invention;

FIG. 2 is a schematic view of the connection between the feeding unit and the roller bed machine tool in the laser cutting device of the present invention;

FIG. 3 is a schematic structural view of a positioning unit in the inventive laser cutting apparatus;

FIG. 4 is a schematic view showing the structural relationship of the clamping jaws in the laser cutting device of the present invention;

FIG. 5 is a schematic structural diagram of a feeding unit in the laser cutting device of the invention;

FIG. 6 is a schematic view showing the connection relationship between the first feeding mechanism and the second feeding mechanism in the laser cutting apparatus according to the present invention;

FIG. 7 is a schematic view of the structure of a cutting machine in the laser cutting apparatus of the present invention;

FIG. 8 is a schematic view of another angle of the cutting machine of the laser cutting apparatus of the present invention;

FIG. 9 is a schematic view of the connection between the cutting head and the mounting base in the laser cutting device of the invention;

fig. 10 is a schematic flow chart of a method for using the laser cutting device of the present invention.

In the drawings: 1. a feeding unit; 2. a positioning unit; 3. cutting the machine tool; 4. a feeding mechanism; 5. a rollgang machine tool; 6. a piece to be cut; 8. a compression assembly; 9. a feeding main body; 10. a clamping assembly; 11. a gripper jaw; 12. a first drive assembly; 13. a second drive assembly; 14. a third drive assembly; 21. a roller 22 and a positioning block; 23. a second telescoping device; 31. a bed body; 33. a first slide rail; 34. a second slide rail; 35. mounting a plate; 36. a mounting seat; 37. a cutting head; 38. a first rotating shaft; 39. a second rotating shaft; 41. a first feeding mechanism; 42. a second feeding mechanism; 71. a horizontal cylinder; 72. jacking a cylinder; 111. a support frame; 112. a first telescoping device; 113. a first duck tongue plate; 114. a second duck tongue plate; 115. and (4) a hinge shaft.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:

example 1

As shown in fig. 1 to 9, a laser cutting device, including feed mechanism 4, rollgang lathe 5, feeding unit 1, positioning unit 2 and cutting machine 3 for cutting to-be-cut piece 6 placed on rollgang lathe 5 through feed mechanism 4, feed mechanism 4 is located one side of rollgang lathe 5 and is used for shifting to rollgang lathe 5 to-be-cut piece 6 that is located on feed mechanism 4, feeding unit 1 is located on rollgang lathe 5 and is rather than sliding connection, be equipped with clamping component 10 that is used for the centre gripping to-be-cut piece 6 on feeding unit 1, positioning unit 2 is located on rollgang lathe 5 and is used for fixing to-be-cut piece. In this embodiment, an operator conveys the to-be-cut piece 6 to the roller conveyor machine tool 5 through the feeding mechanism 4, the feeding unit 1 drives the to-be-cut piece 6 to slide to the positioning unit 2 on the roller conveyor machine tool 5, the positioning unit 2 fixes the to-be-cut piece 6, and the cutting machine tool 3 cuts the fixed to-be-cut piece 6. In the embodiment, the to-be-cut piece 6 can be profile steel, a plate material or other products needing to be cut, the structure of the cutting device is simple, the to-be-cut piece 6 only horizontally moves on the roller conveyor bed machine 5 in the whole cutting process, the rotation of the to-be-cut piece 6 is avoided, the production cost is reduced, and the large-scale popularization and use of the to-be-cut piece 6 are facilitated.

Wherein, pay-off unit 1 still includes the pay-off main part 9 with rollgang lathe 5 sliding connection and is used for driving the gliding first drive assembly 12 of pay-off main part 9 on rollgang lathe 5, centre gripping subassembly 10 is located on pay-off main part 9, first drive assembly 12 links to each other with pay-off main part 9 in this embodiment, first drive assembly 12 is including setting up the rack in rollgang lathe 5 side, install the first motor on pay-off main part 9 and install the gear on the first motor output shaft, it needs to explain, the gear meshes with the rack mutually, the gear is installed on the output shaft of first motor, first motor rotates and drives centre gripping subassembly 10 and waits that cutting member 6 slides to cutting machine 3 direction on rollgang lathe 5.

In addition, the clamping assembly 10 comprises a clamping claw 11, and a second driving assembly 13 and a third driving assembly 14 which are respectively used for driving the clamping claw 11 to move horizontally and vertically, the clamping claw 11 is installed on the second driving assembly 13, the second driving assembly 13 is installed on the third driving assembly 14, the third driving assembly 14 is installed on the roller conveyor machine tool 5 and is in sliding connection with the roller conveyor machine tool, and the first driving assembly 12 is connected with the third driving assembly 14. In this embodiment, the second driving assembly 13 includes a first lead screw, a first adjusting wheel mounted at an end of the first lead screw, and a first nut holder mounted on the first lead screw, the clamping jaw 11 is mounted on the first nut holder, an operator realizes horizontal movement of the first nut holder by rotating the first adjusting wheel, the third driving assembly 14 includes a second lead screw, install the second regulating wheel at second lead screw tip and install the second nut seat on the second lead screw, second drive assembly 13 is installed on second nut seat through perpendicular lifter plate, operating personnel realizes gripper jaw 11 in the removal of vertical direction through rotating the second regulating wheel, first drive assembly 12 still includes the mounting bracket, driving motor installs the bottom at the mounting bracket, the second lead screw is installed at the top of mounting bracket and is connected rather than rotating, be equipped with linear slide rail on the mounting bracket, perpendicular lifter plate is installed on linear guide and rather than sliding connection.

The clamping claw 11 includes a supporting frame 111 mounted on the second driving assembly 13, a first telescopic device 112, and a first duck tongue plate 113 and a second duck tongue plate 114 for clamping the to-be-cut piece 6, the first duck tongue plate 113 is fixed on the supporting frame 111, the second duck tongue plate 114 is mounted on a hinge shaft 115 on the supporting frame 111 and is hinged to the hinge shaft, a telescopic end of the first telescopic device 112 is connected to one end of the second duck tongue plate 114, and the hinge shaft 115 is located at one end of the supporting frame 111 far away from the first telescopic device 112. In this embodiment, the first telescopic device 112 is used to clamp or unclamp the clamping jaws 11, and the hinge shaft 115 is arranged at one end of the supporting frame 111 close to the workpiece 6 to be cut according to the lever principle, so that the clamping jaws 11 can be clamped more tightly. In the present embodiment, the first expansion device 112 is a cylinder.

In addition, the positioning unit 2 includes a plurality of rollers 21 disposed on one side of the rollgang machine tool 5, a positioning block 22, and a second telescopic device 23 for driving the positioning block 22 to move toward the rollers 21, the positioning block 22 is connected to a telescopic end of the second telescopic device 23, and the second telescopic device 23 drives the positioning block 22 to move so that two opposite side surfaces of the to-be-cut piece 6 are respectively abutted to the rollers 21 and the positioning block 22. It should be noted that, when the feeding unit 1 pushes the profile steel to move on the roller conveyor bed 5, the roller 21 may play a guiding role, in this embodiment, the roller 21 is disposed on one side of the roller conveyor bed 5, and the roller 21 may rotate around its own axis, a sliding slot is disposed on the roller conveyor bed 5, the positioning block 22 is located in the sliding slot and slidably connected to the sliding slot, the sliding block and the roller 21 are on the same horizontal axis of the roller conveyor bed 5, and at the same time, an inductor for inducing the piece to be cut 6 is disposed at the positioning unit 2, when the piece to be cut 6 is transported to the positioning unit 2, the second telescopic device 23 controls the positioning block 22 to slide towards the roller 21 until the piece to be cut 6 is clamped, so as to horizontally fix the piece to be cut 6. In this embodiment, the second expansion device is a cylinder.

The cutting machine tool 3 comprises a machine body 31 and a cutting assembly provided with a cutting head 37, the rollgang machine tool 5 is located below the machine body 31, the cutting assembly is arranged on the machine body 31 and can move in three directions of an X axis, a Y axis and a Z axis of the machine body 31, a swinging unit used for driving the cutting head 37 to swing is further arranged in the cutting assembly, and the swinging unit is connected with the cutting head 37 and drives the cutting head 37 to rotate around the X axis and rotate around the Y axis. ,

in addition, the lathe bed 31 is also provided with a pressing component 8 for pressing the to-be-cut piece 6, and the pressing component 8 is abutted against the top of the to-be-cut piece 6. In this embodiment, compress tightly subassembly 8 and install the cylinder on compressing tightly the cylinder telescopic end including installing the compressing cylinder on lathe bed 31, after waiting to cut 6 to be fixed by the horizontal clamping of positioning unit 2, compress tightly the cylinder and drive the cylinder and push down the side of going up of waiting to cut 6, can treat on the one hand like this and carry out the deformation correction to cut 6, can fix simultaneously in vertical direction and wait to cut 6, make things convenient for cutting machine 3 to treat to cut 6 and cut.

In addition, the feeding mechanism 4 comprises a first feeding mechanism 41 for horizontally conveying the to-be-cut piece 6, the first feeding mechanisms 41 are arranged on the same side of the roller conveyor machine 5 in parallel, and a second feeding mechanism 42 for conveying the to-be-cut piece 6 on the first feeding mechanism 41 to the roller conveyor machine 5 is arranged at one end, close to the roller conveyor machine 5, of the first feeding mechanism 41. In this embodiment, the first feeding mechanism 41 includes a first feeding support on the fixed foundation, a conveying belt disposed at the top of the first feeding support, and belt wheels engaged with the conveying belt, and it should be noted that, in this embodiment, a translation motor and a transmission shaft drive a plurality of belt wheels to rotate; the second feeding mechanism 42 comprises a second feeding support and a feeding plate arranged on the foundation, one end of the feeding plate is fixed on the second feeding support and hinged with the second feeding support, a screw rod elevator is arranged below the other end of the feeding plate, a lifting rod of the screw rod elevator is connected with the bottom of the feeding plate, a lifting screw rod can drive the feeding plate to rotate, a second conveying belt, a belt wheel matched with the conveying belt, a translation motor and a transmission shaft are also arranged on the feeding plate, in the embodiment, the second feeding support is as high as the first feeding support, when the feeding mechanism 4 feeds, the piece 6 to be cut is firstly placed on the conveying belt on the first feeding support, the translation motor drives the belt wheel to rotate through the transmission shaft, and then the piece 6 to be cut is conveyed to the conveying belt on the feeding plate, while the piece 6 to be cut is horizontally conveyed by the conveying belt on the second feeding support, the screw rod lifter drives the feeding plate to rotate, and then the workpiece 6 to be cut on the feeding plate is conveyed to the roller bed machine tool 5.

Example 2

In this embodiment, as shown in fig. 7 and 8, the bed 31 is provided with a first slide rail 33 and a second slide rail 34 which are perpendicular to each other, the second slide rail 34 is installed on the first slide rail 33 and is slidably connected thereto, the cutting assembly further includes an installation base 36, an installation plate 35 and a fourth driving device for driving the installation base 36 to perform a lifting motion on the installation plate 35, the installation plate 35 is installed on the second slide rail 34 and is slidably connected thereto, the installation base 36 is installed on the installation plate 35 and is slidably connected thereto, and the fourth driving device is connected to the installation base 36. In this embodiment, the number of the first slide rails 33 is two, the two first slide rails 33 are arranged in parallel, two ends of the second slide rail 34 are respectively installed on the two first slide rails 33, the fourth driving component includes a fourth motor and a screw rod, an output shaft of the fourth motor is connected with the screw rod, the mounting seat 36 is installed on the screw rod, the fourth motor rotates to drive the mounting seat 36 to do linear lifting motion on the mounting plate 35, the swinging unit includes a first swinging component and a second swinging component, the cutting head 37, the first swinging component and the second swinging component are installed on the mounting seat 36, the mounting seat 36 is further provided with a first rotating shaft 38 and a second rotating shaft 39, the first swinging component is used for controlling the cutting head 37 to swing around the first rotating shaft 38, the second swinging component is used for controlling the cutting head 37 to swing around the second rotating shaft 39, the first rotating shaft 38 is perpendicular to the second rotating shaft 39, meanwhile, the first swinging component includes a rotating frame and a first swinging motor for driving the cutting head 37 to swing, the turret is mounted on a first shaft 38, the first swing motor is mounted in a cavity in the turret, the first rotating shaft 38 drives the rotating frame to swing, the cutting head 37 is arranged on one side of the rotating frame far away from the first swinging motor, the second swinging assembly comprises a connecting plate and a second swinging motor used for driving the cutting head 37 and the first swinging assembly to swing, the connecting plate is fixedly arranged on the mounting seat 36, one side of the rotating frame far away from the cutting head 37 in the first swinging assembly is arranged on the connecting plate and is rotationally connected with the connecting plate, the second swinging motor drives the first swinging assembly to swing through an output shaft of the second swinging motor, and the swinging of the cutting head 37 around the first rotating shaft 38 and the second rotating shaft 39 is realized, wherein the first rotating shaft 38 is parallel to the X-axis, and the second rotating shaft 39 is parallel to the Y-axis, so that the cutting head 37 has five degrees of freedom, and the cutting head can cut the workpiece 6 in all directions.

Example 3

As shown in fig. 10, a control method of a laser cutting apparatus includes the steps of:

s1: placing a to-be-cut piece 6 on the feeding mechanism 4, and controlling the feeding mechanism 4 to convey the to-be-cut piece 6 to the roller conveyor machine tool 5 through the controller;

s2: the controller controls the clamping assembly 10 to clamp one end of the workpiece 6 to be cut and controls the clamping assembly 10 to push the workpiece 6 to be cut to move longitudinally on the roller conveyor machine tool 5 to the positioning unit 2;

s3: the controller controls the positioning unit 2 to clamp and fix the to-be-cut piece 6, and controls the pressing assembly 8 to press the to-be-cut piece 6 downwards and correct the curvature of the to-be-cut piece 6;

s4: and controlling the cutting machine tool 3 to cut the fixed to-be-cut piece 6 through the controller, and blanking the to-be-cut piece 6 which is cut.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A laser cutting device, characterized in that: including feed mechanism (4), rollgang lathe (5), feeding unit (1), positioning unit (2) and be used for the cutting to pass through feed mechanism (4) place cutting machine (3) of waiting to cut piece (6) on rollgang lathe (5), feed mechanism (4) are located one side of rollgang lathe (5) is used for being located on feed mechanism (4) it shifts to rollgang lathe (5) to wait to cut piece (6), feeding unit (1) are located on rollgang lathe (5) and rather than sliding connection, be equipped with on feeding unit (1) and be used for the centre gripping treat centre gripping subassembly (10) of cutting piece (6), positioning unit (2) are located on rollgang lathe (5) and be used for fixing wait to cut piece (6).

2. The laser cutting device according to claim 1, wherein: the feeding unit (1) further comprises a feeding main body (9) in sliding connection with the conveying roller bed machine (5) and a first driving assembly (12) used for driving the feeding main body (9) to slide on the conveying roller bed machine (5), the clamping assembly (10) is arranged on the feeding main body (9), and the first driving assembly (12) is connected with the feeding main body (9).

3. The laser cutting device according to claim 2, wherein: the clamping assembly (10) comprises a clamping claw (11), a second driving assembly (13) and a third driving assembly (14), wherein the second driving assembly (13) and the third driving assembly (14) are respectively used for driving the clamping claw (11) to move horizontally and vertically, the clamping claw (11) is installed on the second driving assembly (13), the second driving assembly (13) is installed on the third driving assembly (14), the third driving assembly (14) is installed on the conveying roller bed (5) and is in sliding connection with the conveying roller bed, and the first driving assembly (12) is connected with the third driving assembly (14).

4. The laser cutting device according to claim 3, wherein: gripper jaw (11) are including installing support frame (111), first telescoping device (112) on second drive assembly (13) and be used for centre gripping to treat first hyoplastron (113) and second hyoplastron (114) of cutting member (6), first hyoplastron (113) are fixed on support frame (111), second hyoplastron (114) are installed on hinge (115) on support frame (111) and articulated mutually rather than, the flexible end of first telescoping device (112) with the one end of second hyoplastron (114) links to each other, hinge (115) are located support frame (111) and are kept away from the one end of first telescoping device (112).

5. The laser cutting device according to claim 1, wherein: the positioning unit (2) comprises a plurality of rollers (21) arranged on one side of the roller conveyor bed (5), a positioning block (22) and a second telescopic device (23) used for driving the positioning block (22) to move towards the rollers (21), the positioning block (22) is connected with the telescopic end of the second telescopic device (23), and the second telescopic device (23) drives the positioning block (22) to move so that the two opposite side faces of the piece to be cut (6) are respectively abutted to the rollers (21) and the positioning block (22).

6. The laser cutting device according to claim 1, wherein: the cutting machine tool (3) comprises a tool body (31) and a cutting assembly provided with a cutting head (37), the rollgang tool (5) is located below the tool body (31), the cutting assembly is arranged on the tool body (31) and can move in three directions of an X axis, a Y axis and a Z axis of the tool body (31), a swinging unit used for driving the cutting head (37) to swing is further arranged in the cutting assembly, and the swinging unit is connected with the cutting head (37) and drives the cutting head (37) to rotate around the X axis and rotate around the Y axis.

7. The laser cutting device according to claim 6, wherein: be equipped with mutually perpendicular's first slide rail (33) and second slide rail (34) on lathe bed (31), second slide rail (34) are installed on first slide rail (33) and rather than sliding connection, the cutting subassembly still includes mount pad (36), mounting panel (35) and is used for the drive mount pad (36) are in do elevating movement's fourth drive arrangement on mounting panel (35), mounting panel (35) are installed on second slide rail (34) and rather than sliding connection, mount pad (36) are installed on mounting panel (35) and rather than sliding connection, fourth drive arrangement with mounting panel (35) link to each other.

8. The laser cutting device according to claim 6 or 7, characterized in that: the lathe bed (31) is further provided with a pressing component (8) used for pressing the to-be-cut piece (6), and the pressing component (8) is abutted to the top of the to-be-cut piece (6).

9. The laser cutting device according to claim 1, wherein: the feeding mechanism (4) comprises a first feeding mechanism (41) used for horizontally conveying the pieces to be cut (6), the first feeding mechanism (41) is arranged on the same side of the roller conveyor machine (5), and one end, close to the roller conveyor machine (5), of the first feeding mechanism (41) is provided with a second feeding mechanism (42) used for conveying the pieces to be cut (6) on the first feeding mechanism (41) to the roller conveyor machine (5).

10. A control method using the laser cutting apparatus according to any one of claims 1 to 9, comprising the steps of:

s1: placing the to-be-cut piece (6) on the feeding mechanism (4), and controlling the feeding mechanism (4) through the controller to convey the to-be-cut piece (6) to the roller conveyor machine tool (5);

s2: the controller controls the clamping assembly (10) to clamp one end of the to-be-cut piece (6) and controls the clamping assembly (10) to push the to-be-cut piece (6) to move to the positioning unit (2) on the roller conveyor machine tool (5) along the longitudinal direction;

s3: the controller controls the positioning unit (2) to clamp and fix the to-be-cut piece (6), and controls the pressing assembly (8) to press the to-be-cut piece (6) downwards and correct the curvature of the to-be-cut piece (6);

s4: the controller controls the cutting machine (3) to cut the fixed to-be-cut piece (6), and the cut to-be-cut piece (6) is cut off.