CN114535837A

CN114535837A - Laser cutting device with positioning function

Info

Publication number: CN114535837A
Application number: CN202210304304.1A
Authority: CN
Inventors: 王亚军
Original assignee: Jiangsu Dazu Yueming Laser Technology Co ltd
Current assignee: Songgu Laser Technology Jiangsu Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-05-27
Anticipated expiration: 2042-03-25
Also published as: CN114535837B

Abstract

The invention relates to the technical field of laser cutting, in particular to a laser cutting device with a positioning function, which comprises a placing base station, a bearing bracket, a cutting frame, a positioning mechanism and a cutting mechanism.

Description

Laser cutting device with positioning function

Technical Field

The invention relates to the technical field of laser cutting, in particular to a laser cutting device with a positioning function.

Background

The laser cutting is a technology for cutting a workpiece by irradiating a cut material with a high-power-density laser beam, heating the material to a vaporization temperature quickly and evaporating the material to form holes, and blowing off molten substances by means of high-speed airflow coaxial with the laser beam along with the movement of the material by the laser beam, wherein the laser cutting is widely applied to the fields of automobile manufacturing, aerospace and the like due to the characteristics of narrow cut, small workpiece deformation, small roughness of the surface of a cut and the like, wherein the inner part of the workpiece is uniformly distributed with empty grooves, the outer part of the workpiece is of an arc structure, and the three-dimensional structure of the workpiece is shown in figure 10.

In the workpiece cutting process, if a complete workpiece is obtained after cutting, cutting needs to be performed at a position between the empty slots on the workpiece, but in the workpiece cutting process, alignment errors exist between the cutting equipment and the workpiece due to factors such as workpiece stacking, movement in the cutting process and the like, and then the cutting equipment cuts the empty slot part of the workpiece in the cutting process, so that the integrity of the section of the workpiece is caused, and the cutting effect of the workpiece is influenced.

The distance between the traditional laser cutting equipment and the position to be cut of the arc-shaped workpiece is different in the moving process, if the distance between the laser cutting equipment and the workpiece is too close, strong back-turning pressure is generated between airflow and the workpiece, and the blowing capacity of the airflow on molten substances generated after cutting is influenced; if the laser cutting apparatus is too far from the workpiece, unnecessary kinetic energy loss may also result.

Disclosure of Invention

In order to solve the problems, the invention adopts the following technical scheme: the utility model provides a laser cutting device with locate function, is including placing the base station, holding bracket, cutting frame, positioning mechanism and cutting mechanism, the support bracket that places base station up end left and right sides mid-mounting has Contraband type structure, the cutting frame that Contraband type structure was installed jointly to two support bracket up ends, cutting frame horizontal segment terminal surface installs cutting mechanism down, place the base station up end and lie in two and hold the inside positioning mechanism that all installs of bracket.

The positioning mechanism comprises a bidirectional screw, a positioning frame, a bidirectional screw rod, a positioning plate and a fixing part, wherein the middle part of the placing base station is provided with a sliding groove moving from left to right, the lower end of the positioning frame is provided with a sliding bulge, the positioning frame is arranged at the left side and the right side of the sliding groove in a sliding way through the sliding bulge, a bidirectional screw rod is arranged between the two sliding bulges through threads, the upper end surface of each positioning frame is provided with positioning chutes which are symmetrical front and back, positioning plates with L-shaped structures are arranged in the two adjacent front and back positioning chutes, the vertical sections of the positioning plates are arranged in the positioning chutes in a sliding way, and the horizontal section of locating plate places the base station middle part along the horizontal direction and extends, and two-way lead screw passes through the bearing and installs in the frame of location and lie in the part between two front and back location spouts, and both ends and the vertical section spiro union of locating plate around the two-way lead screw, and the fixed part is installed to the frame up end of location just lie in between two front and back locating plates.

The cutting mechanism comprises a lifting cylinder, an arc-shaped plate, an electric sliding block, a connecting frame, an adjusting part and a laser cutting instrument, wherein the lifting cylinder is installed in the middle of the lower end face of the horizontal section of the cutting frame through a cylinder seat, the arc-shaped plate is installed on the lower end face of the telescopic end of the lifting cylinder, the electric sliding block is installed on the lower end face of the arc-shaped plate, and the connecting frame, the adjusting part and the laser cutting instrument are sequentially installed on the lower end face of the electric sliding block from top to bottom.

Preferably, the fixed part include reset spring pole, fixed plate, elevating rack, connect the cylinder and open the plywood, wherein the locating rack up end middle part be provided with fixed protrusion, around two locating plates and fixed protrusion between all slide and be provided with the fixed plate, install reset spring pole between two fixed plates and the fixed protrusion around, elevating rack is installed to fixed protrusion up end, elevating rack horizontal segment lower extreme face is installed through the cylinder block and is connected the cylinder, connect the flexible end lower extreme face of cylinder and install and open the plywood, wherein open and close the board lower extreme face and seted up the groove that opens and shuts, and open and shut the groove and be isosceles trapezoid structure, open and shut the groove around both sides wall and support respectively and lean on two fixed plates in the front and back.

Preferably, the adjusting part comprises an opening-closing spring rod, an adjusting frame and a moving wheel, wherein the opening-closing spring rod is arranged on the lower end face of the connecting frame, the adjusting frame is arranged at the lower end of the opening-closing spring rod, and the moving wheel is arranged at the front end and the rear end of the adjusting frame through bearings.

Preferably, the clamp plate is all installed at both ends about the arc lower extreme face, the pressure spring pole is all installed to the terminal surface left and right sides under two support bracket horizontal segments lower extreme face and the clamp plate, the limiting plate is all installed to two pressure spring pole lower extremes, the arc moves down the in-process and drives the limiting plate through the clamp plate and support and lean on the workpiece surface, and then the limiting plate can further spacing compress tightly the work piece in the work piece cutting process, avoid the work piece to take place to rock in the cutting process, wherein the pressure spring pole plays to restore to the throne and the connection effect to the work piece.

Preferably, the placing base station upper end face be provided with spacing arch, spacing protruding up end has seted up the joint recess, the inside joint of joint recess has the supporting link, and be located the supporting link top and install the arc backup pad, the receipts silo has been seted up to arc backup pad up end, arc backup pad up end just is located and receives the silo front and back both sides and installs the blotter, spacing arch can carry out the spacing of left right direction to the work piece, avoid the work piece to take place the displacement of left right direction in cutting process, the arc backup pad can play the support component effect to the work piece in work piece cutting process, avoid the work piece too big fracture that causes the work piece of atress in cutting process, the receipts silo can be collected the fused material that the cutting process produced, the blotter can reduce the rigid impact of work piece in the arc backup pad, play the cushioning effect to the work piece.

Preferably, the gas collecting cavity is formed in the adjusting frame, a plurality of air inlets communicated with the gas collecting cavity are uniformly formed in the lower end face of the adjusting frame, an air pump communicated with the gas collecting cavity is installed on the left end face of the adjusting frame, the air pump is started to suck waste gas generated in the cutting process into the gas collecting cavity through the air inlets, and the influence on environmental sanitation caused by the fact that the waste gas generated in the cutting process is discharged into the air is avoided.

Preferably, the clamping rubber pads are arranged on the opposite surfaces of the front fixing plate and the rear fixing plate, and the clamping rubber pads can increase the contact area between the fixing plates and the workpiece, so that the workpiece is more stable in the cutting process, and can protect the workpiece.

Preferably, the cutting frame horizontal segment up end run through to slide and be provided with spacing, and spacing lower extreme is fixed at the arc up end, spacing can play limiting displacement to the arc in cutting process, avoid electronic slider to remove the in-process because the arc span is too big to cause rocking of arc, improve the stability of arc in cutting process.

The invention has the beneficial effects that: 1. in the positioning mechanism designed by the invention, when a workpiece moves to the position near the positioning plate from back to front, the bidirectional screw rod is rotated to drive the positioning plate to move towards the inside of the empty groove through the positioning frame, then the bidirectional screw rod is rotated to drive the positioning plate to move back and forth, and further the positioning plate can drive the workpiece to move back and forth according to the movement of the workpiece in the empty groove, so that the part between the front and back adjacent empty grooves is just positioned under the laser cutting instrument, thereby ensuring that the laser cutting instrument can not cut the empty groove part of the workpiece when cutting the workpiece, ensuring that the cutting surface of the workpiece is kept complete, and improving the cutting effect of the workpiece.

2. In the cutting mechanism designed by the invention, the arc-shaped plate is matched with the workpiece in the workpiece cutting process, so that the distance between the laser cutting instrument and the arc-shaped surface of the workpiece can be kept constant, kinetic energy loss of high-speed airflow in the cutting process of the laser cutting instrument can be avoided, and the high-speed airflow can be prevented from generating return pressure, so that molten substances generated by cutting can be effectively blown away by the high-speed airflow.

3. In the fixing part designed by the invention, when the positioning mechanism finishes positioning the workpiece, the connecting cylinder is started to drive the fixing plates to move oppositely through the opening and closing grooves in the opening and closing plate, and then the two fixing plates can clamp the part between the two empty grooves, so that the fixing plates can fix the positioned workpiece, the workpiece is prevented from shaking in the cutting process, and the stability of the workpiece is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a partially enlarged view of fig. 1 a according to the present invention.

Fig. 3 is a partial enlarged view of the present invention at B of fig. 1.

Fig. 4 is a schematic perspective view of a part of the positioning mechanism of the present invention.

FIG. 5 is a partial top view of the positioning mechanism of the present invention.

Fig. 6 is a front view of the present invention.

Fig. 7 is a partial enlarged view of the invention at C of fig. 6.

Fig. 8 is a schematic view of a three-dimensional structure installed between the support link, the arc-shaped support plate and the cushion pad according to the present invention.

Fig. 9 is a schematic view of the internal structure of the adjusting bracket of the present invention.

Fig. 10 is a schematic perspective view of a workpiece according to the present invention.

In the figure: 1. placing a base platform; 11. a limiting bulge; 12. a support link; 13. an arc-shaped support plate; 14. a material receiving groove; 15. a cushion pad; 2. a support bracket; 3. a cutting frame; 31. a limiting frame; 4. a positioning mechanism; 41. a bidirectional screw; 42. positioning the frame; 421. a sliding projection; 43. a bidirectional lead screw; 44. positioning a plate; 45. a fixed part; 451. a return spring lever; 452. a fixing plate; 4521. clamping the rubber pad; 453. a lifting frame; 454. connecting the cylinder; 455. opening a plywood; 5. a cutting mechanism; 51. a lifting cylinder; 52. an arc-shaped plate; 521. pressing a plate; 522. compressing the spring rod; 523. a limiting plate; 53. an electric slider; 54. a connecting frame; 55. an adjustment section; 551. opening and closing the spring rod; 552. an adjusting bracket; 5521. a gas collection cavity; 5522. an air inlet; 5523. an air pump; 554. a moving wheel; 56. a laser cutting instrument; 6. a workpiece; 61. and (4) emptying the groove.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

Referring to fig. 1 and 6, a laser cutting device with locate function, including placing base station 1, support bracket 2, cutting frame 3, positioning mechanism 4 and cutting mechanism 5, place 1 up end left and right sides mid-mounting of base station have Contraband type structure's support bracket 2, two support bracket 2 up ends install the cutting frame 3 of Contraband type structure jointly, cutting frame 3 horizontal segment down the terminal surface install cutting mechanism 5, place 1 up end of base station and lie in two support bracket 2 inside all install positioning mechanism 4.

Referring to fig. 6 and 8, the upper end surface of the placing base station 1 is provided with a limiting protrusion 11, the upper end surface of the limiting protrusion 11 is provided with a clamping groove, a supporting connecting rod 12 is clamped in the clamping groove, an arc-shaped supporting plate 13 is arranged above the supporting connecting rod 12, the upper end surface of the arc-shaped supporting plate 13 is provided with a material receiving groove 14, cushion pads 15 are arranged on the upper end surface of the arc-shaped supporting plate 13 and on the front side and the rear side of the material receiving groove 14, the limiting protrusion 11 can limit the workpiece 6 in the left-right direction, so that the workpiece 6 is prevented from moving in the left-right direction in the cutting process, the arc-shaped supporting plate 13 can play a supporting component force role on the workpiece 6 in the cutting process of the workpiece 6, the workpiece 6 is prevented from being broken due to excessive stress in the cutting process, the material receiving groove 14 can collect molten materials generated in the cutting process, and the cushion pads 15 can reduce the rigid impact of the workpiece 6 on the arc-shaped supporting plate 13, and the work piece 6 is buffered.

Referring to fig. 1, the upper end surface of the horizontal section of the cutting frame 3 is provided with a limiting frame 31 in a penetrating and sliding manner, the lower end of the limiting frame 31 is fixed on the upper end surface of the arc-shaped plate 52, the limiting frame 31 can limit the arc-shaped plate 52 in the cutting process, the situation that the arc-shaped plate 52 shakes due to the overlarge span of the arc-shaped plate 52 in the moving process of the electric sliding block 53 is avoided, and the stability of the arc-shaped plate 52 in the cutting process is improved.

Referring to fig. 1, 4 and 5, the positioning mechanism 4 includes a bidirectional screw 41, a positioning frame 42, a bidirectional screw 43, a positioning plate 44 and a fixing portion 45, wherein a sliding groove moving from left to right is formed in the middle of the placing base 1, a sliding protrusion 421 is formed at the lower end of the positioning frame 42, the positioning frame 42 is slidably disposed at the left and right sides of the sliding groove through the sliding protrusion 421, the bidirectional screw 41 is installed between the two sliding protrusions 421 through a screw thread, a front and back symmetrical positioning sliding groove is formed on the upper end surface of each positioning frame 42, the positioning plate 44 having an L-shaped structure is disposed inside each front and back adjacent two positioning sliding grooves, a vertical section of the positioning plate 44 is slidably disposed inside the positioning sliding groove, a horizontal section of the positioning plate 44 extends along the middle of the placing base 1 in the horizontal direction, the bidirectional screw 43 is mounted on the positioning frame 42 through a bearing and is disposed between the front and back two positioning sliding grooves, the front end and the rear end of the bidirectional screw 43 are screwed with the vertical sections of the positioning plates 44, and the fixing part 45 is arranged on the upper end face of the positioning frame 42 and between the front positioning plate 44 and the rear positioning plate 44.

Referring to fig. 1, 3 and 7, the cutting mechanism 5 includes a lifting cylinder 51, an arc-shaped plate 52, an electric slider 53, a connecting frame 54, an adjusting portion 55 and a laser cutting instrument 56, wherein the lifting cylinder 51 is mounted in the middle of the lower end face of the horizontal section of the cutting frame 3 through a cylinder block, the arc-shaped plate 52 is mounted on the lower end face of the telescopic end of the lifting cylinder 51, the electric slider 53 is mounted on the lower end face of the arc-shaped plate 52, and the connecting frame 54, the adjusting portion 55 and the laser cutting instrument 56 are sequentially mounted on the lower end face of the electric slider 53 from top to bottom.

When the cutting machine works specifically, a workpiece 6 to be cut is placed on the placing base platform 1, the position to be cut of the workpiece 6 is determined according to actual cutting requirements, the workpiece 6 is manually pushed to move forwards from back to front, so that the position to be cut of the workpiece 6 is moved to the lower side of the arc-shaped plate 52, the positioning plate 44 is positioned on the side edge of the empty groove 61, the positioning plate 44 is driven to move towards the opposite direction by rotating the bidirectional screw 41 through the positioning frame 42, so that the positioning plate 44 is inserted into the empty groove 61, after the positioning plate 44 is moved into the empty groove 61, the positioning plate 44 is driven to move forwards and backwards by rotating the bidirectional screw 43, when the part between two adjacent empty grooves 61 is positioned on the rear side of the laser cutting instrument 56, the front positioning plate 44 moves forwards to drive the workpiece 6 to move forwards by pushing the inner wall of the empty groove 61, so that the part between two adjacent empty grooves 61 and the laser cutting instrument 56 are positioned on the same vertical surface, and when the part between two adjacent empty grooves 61 is positioned on the front side of the laser cutting instrument 56, the rear positioning plate 44 moves backwards to drive the workpiece 6 to move backwards by pushing the inner wall of the empty groove 61, so that the part between two adjacent empty grooves 61 and the laser cutting instrument 56 are located on the same vertical surface, wherein the middle point of the connecting line between the two adjacent positioning plates 44 is located on the same vertical surface as the laser cutting instrument 56, after the workpiece 6 is positioned, the lifting cylinder 51 is started to drive the arc-shaped plate 52 to move downwards, the arc-shaped plate 52 drives the laser cutting instrument 56 to move above the surface of the workpiece 6 through the adjusting part 55, the electric slide block 53 is started to drive the laser cutting instrument 56 to cut the workpiece 6 by mutually matching the connecting frame 54 and the adjusting part 55, and the arc-shaped plate 52 can ensure that the distance between the laser cutting instrument 56 and the workpiece 6 is basically consistent.

Referring to fig. 4, the fixing portion 45 includes a return spring bar 451, a fixing plate 452, a lifting frame 453, a connecting cylinder 454 and a locking plate 455, wherein a fixing protrusion is disposed at the middle of the upper end surface of the positioning frame 42, the fixing plate 452 is slidably disposed between the front and rear positioning plates 44 and the fixing protrusion, the return spring bar 451 is disposed between the front and rear fixing plates 452 and the fixing protrusion, the lifting frame 453 is disposed on the upper end surface of the fixing protrusion, the connecting cylinder 454 is disposed on the lower end surface of the horizontal section of the lifting frame 453 through a cylinder seat, the locking plate 455 is disposed on the lower end surface of the telescopic end of the connecting cylinder 454, the locking plate 455 is disposed on the lower end surface of the locking plate 455, the locking groove is an isosceles trapezoid structure, the front and rear two side walls of the locking groove respectively abut against the front and rear fixing plates 452, and when the positioning plate 44 moves into the locking groove 61, the fixing plate 452 synchronously moves into the locking groove 61, after work piece 6 passes through locating plate 44 location, connect cylinder 454 to start to drive open plywood 455 and move down, and then open plywood 455 and open through the groove that opens and shuts of isosceles trapezoid structure and drive fixed plate 452 and move in opposite directions, and then two fixed plates 452 can carry out the centre gripping to the part between two dead slots 61, thereby fixed plate 452 can be fixed the work piece 6 after the location, avoid work piece 6 to take place to rock at the cutting in-process, improve work piece 6's stability, wherein reset spring pole 451 can play the guide effect of restoring to the throne to fixed plate 452.

Referring to fig. 4 and 5, clamping rubber pads 4521 are installed on opposite surfaces of the fixing plates 452 adjacent to each other in the front-rear direction, and the clamping rubber pads 4521 can increase a contact area between the fixing plates 452 and the workpiece 6, so that the workpiece 6 is more stable in the cutting process, and the workpiece 6 can be protected.

Referring to fig. 1, fig. 2 and fig. 6, the pressing plates 521 are installed at the left and right ends of the lower end surface of the arc plate 52, the pressing spring rods 522 are installed at the left and right sides of the lower end surface of the two horizontal sections of the two support brackets 2 and the pressing plates 521, the limiting plates 523 are installed at the lower ends of the two pressing spring rods 522, the limiting plates 523 are driven by the pressing plates 521 to abut against the surface of the workpiece 6 in the downward moving process of the arc plate 52, the limiting plates 523 can further limit and compress the workpiece 6 in the cutting process of the workpiece 6, the workpiece 6 is prevented from shaking in the cutting process, and the pressing spring rods 522 play roles in resetting and connecting the workpiece 6.

Referring to fig. 3, the adjusting portion 55 includes an opening-closing spring rod 551, an adjusting frame 552 and a moving wheel 554, wherein the opening-closing spring rod 551 is installed on the lower end surface of the connecting frame 54, the adjusting frame 552 is installed at the lower end of the opening-closing spring rod 551, the moving wheel 554 is installed at the front end and the rear end of the adjusting frame 552 through a bearing, the opening-closing spring rod 551 and the moving wheel 554 are mutually matched to drive the laser cutting instrument 56 to be always at a certain distance from the surface of the workpiece 6, so that it is ensured that the laser cutting instrument 56 does not generate kinetic energy loss in the high-speed airflow during the cutting process, and it is ensured that the high-speed airflow does not generate a turning pressure so that the molten material generated by cutting can be effectively blown away by the high-speed airflow.

Referring to fig. 9, the gas collection chamber 5521 is provided inside the adjusting frame 552, a plurality of gas inlets 5522 communicated with the gas collection chamber 5521 are uniformly provided on the lower end surface of the adjusting frame 552, the gas pump 5523 communicated with the gas collection chamber 5521 is installed on the left end surface of the adjusting frame 552, the gas pump 5523 is started and can suck the waste gas generated in the cutting process into the gas collection chamber 5521 through the gas inlets 5522, and the influence on environmental sanitation caused by the emission of the waste gas generated in the cutting process into the air is avoided.

The invention provides a method for positioning a workpiece by a laser cutting device with a positioning function, which comprises the following steps: the first step is as follows: placing and moving: the workpiece 6 to be cut is placed on the placing base platform 1, the position to be cut of the workpiece 6 is determined according to actual cutting requirements, the workpiece 6 is pushed to move forwards from back manually, the position to be cut of the workpiece 6 is moved to the position below the arc-shaped plate 52, and the positioning plate 44 is located on the side edge of the empty groove 61.

The second step is that: positioning and adjusting: the positioning plate 44 is driven by rotating the bidirectional screw rod 41 through the positioning frame 42 to move in the opposite direction so that the positioning plate 44 is inserted into the empty slot 61, after the positioning plate 44 moves into the empty slot 61, the bidirectional screw rod 43 is rotated again to drive the positioning plate 44 to move back and forth, and then the positioning plate 44 moves in the empty slot 61 according to the offset degree of the workpiece 6 so as to drive the workpiece 6 to move back and forth, so that the part between the two adjacent empty slots 61 in the front and back is just positioned under the laser cutting instrument 56.

The third step: cutting treatment: after the workpiece 6 is positioned, the lifting cylinder 51 is started to drive the arc-shaped plate 52 to move downwards, then the arc-shaped plate 52 drives the laser cutting instrument 56 to move to the upper part of the surface of the workpiece 6 through the adjusting part 55, and the electric sliding block 53 is started to drive the laser cutting instrument 56 to cut the workpiece 6 through the mutual matching of the connecting frame 54 and the adjusting part 55.

The fourth step: collecting and treating: the collection processing is performed on the workpiece 6 when the cutting of the workpiece 6 is finished.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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. The utility model provides a laser cutting device with locate function, is including placing base station (1), support bracket (2), cutting frame (3), positioning mechanism (4) and cutting mechanism (5), its characterized in that: place base station (1) up end left and right sides mid-mounting have support bracket (2) of Contraband type structure, two support bracket (2) up end install cutting frame (3) of Contraband type structure jointly, cutting frame (3) horizontal segment down end-face installs cutting mechanism (5), place base station (1) up end and be located two support bracket (2) inside and all install positioning mechanism (4), wherein:

the positioning mechanism (4) comprises a bidirectional screw rod (41), a positioning rack (42), a bidirectional screw rod (43), a positioning plate (44) and a fixing part (45), wherein the middle part of the placing base platform (1) is provided with a sliding groove moving from left to right, the lower end of the positioning rack (42) is provided with a sliding bulge (421), the positioning rack (42) is arranged on the left side and the right side of the sliding groove in a sliding way through the sliding bulge (421), the bidirectional screw rod (41) is arranged between the two sliding bulges (421) through threads, the upper end surface of each positioning rack (42) is provided with positioning chutes which are symmetrical front and back, the positioning plates (44) with L-shaped structures are arranged inside the two adjacent front and back positioning chutes, the vertical sections of the positioning plates (44) are arranged inside the positioning chutes in a sliding way, and the horizontal sections of the positioning plates (44) extend along the middle part of the placing base platform (1) in the horizontal direction, the bidirectional screw rod (43) is mounted on the positioning rack (42) through a bearing and is positioned on a part between the front positioning chute and the rear positioning chute, the front end and the rear end of the bidirectional screw rod (43) are in threaded connection with the vertical section of the positioning plate (44), and the fixing part (45) is mounted on the upper end surface of the positioning rack (42) and is positioned between the front positioning plate and the rear positioning plate (44);

the cutting mechanism (5) comprises a lifting cylinder (51), an arc-shaped plate (52), an electric sliding block (53), a connecting frame (54), an adjusting part (55) and a laser cutting instrument (56), wherein the lifting cylinder (51) is installed in the middle of the lower end face of the horizontal section of the cutting frame (3) through a cylinder seat, the arc-shaped plate (52) is installed on the lower end face of the telescopic end of the lifting cylinder (51), the electric sliding block (53) is installed on the lower end face of the arc-shaped plate (52), and the connecting frame (54), the adjusting part (55) and the laser cutting instrument (56) are sequentially installed on the lower end face of the electric sliding block (53) from top to bottom.

2. The laser cutting device with the positioning function according to claim 1, wherein: the fixed part (45) comprises a return spring rod (451), a fixed plate (452), a lifting frame (453), a connecting cylinder (454) and a stretching plate (455), wherein a fixed bulge is arranged in the middle of the upper end surface of the positioning frame (42), a fixed plate (452) is arranged between the front positioning plate (44) and the fixed bulge in a sliding manner, a reset spring rod (451) is arranged between the front fixed plate (452) and the fixed bulge, a lifting frame (453) is arranged on the upper end surface of the fixed bulge, a connecting cylinder (454) is arranged on the lower end surface of the horizontal section of the lifting frame (453) through a cylinder seat, a tensioning plate (455) is arranged on the lower end surface of the telescopic end of the connecting cylinder (454), the lower end face of the opening-closing plate (455) is provided with an opening-closing groove which is of an isosceles trapezoid structure, and the front side wall and the rear side wall of the opening-closing groove are respectively abutted to the front fixing plate (452) and the rear fixing plate (452).

3. The laser cutting device with the positioning function according to claim 1, wherein: the adjusting part (55) comprises an opening-closing spring rod (551), an adjusting frame (552) and a moving wheel (554), wherein the opening-closing spring rod (551) is installed on the lower end face of the connecting frame (54), the adjusting frame (552) is installed at the lower end of the opening-closing spring rod (551), and the moving wheel (554) is installed at the front end and the rear end of the adjusting frame (552) through bearings.

4. The laser cutting device with the positioning function according to claim 1, wherein: pressing plates (521) are installed at the left end and the right end of the lower end face of the arc-shaped plate (52), pressing spring rods (522) are installed on the left side and the right side of the lower end face of the horizontal sections of the two support brackets (2) and the pressing plates (521), and limiting plates (523) are installed at the lower ends of the two pressing spring rods (522).

5. The laser cutting device with the positioning function according to claim 1, wherein: placing base station (1) up end be provided with spacing arch (11), joint recess has been seted up to spacing arch (11) up end, the inside joint of joint recess has support connecting rod (12), and is located support connecting rod (12) top and installs arc backup pad (13), material receiving groove (14) have been seted up to arc backup pad (13) up end, both sides install blotter (15) around arc backup pad (13) up end and being located material receiving groove (14).

6. The laser cutting device with the positioning function according to claim 3, wherein: the gas collection chamber (5521) has been seted up to alignment jig (552) inside, a plurality of air inlets (5522) that link up mutually with gas collection chamber (5521) have evenly been seted up to alignment jig (552) lower terminal surface, air pump (5523) that link up mutually with gas collection chamber (5521) are installed to alignment jig (552) left end face.

7. The laser cutting device with the positioning function according to claim 2, wherein: and clamping rubber pads (4521) are arranged on the opposite surfaces of the front and rear adjacent fixing plates (452).

8. The laser cutting device with the positioning function according to claim 1, wherein: the cutting frame (3) horizontal segment up end run through the slip and be provided with spacing (31), and spacing (31) lower extreme is fixed at arc (52) up end.