CN115383326A

CN115383326A - Profile laser device for improving machining precision and machining method thereof

Info

Publication number: CN115383326A
Application number: CN202211138183.4A
Authority: CN
Inventors: 王晓东; 袁强
Original assignee: Suzhou Huaya Intelligent Technology Co ltd
Current assignee: Suzhou Huaya Intelligent Technology Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2022-11-25

Abstract

The application relates to a profile laser device for improving machining precision and a machining method thereof, and relates to the technical field of laser devices, wherein the laser device comprises a machine body and a cutting mechanism arranged on the machine body, and the laser device further comprises a limiting mechanism, wherein the limiting mechanism comprises a plurality of collision parts, a supporting part, a driving part and a suction part; the machine body is provided with a plurality of preset channels and an assembly channel; the driving part is arranged in the side wall of the assembly channel, the supporting part is connected with the driving part, the suction part comprises a suction piece and a plurality of air suction pipes, the suction piece is arranged in the side wall of the assembly channel, one end of each air suction pipe is connected with the suction piece, and the other end of each air suction pipe is arranged on the abutting part; the processing method comprises the following steps: positioning large-size sectional materials, positioning small-size sectional materials and processing the sectional materials. This application has the effect that improves laser device to the machining precision of section bar.

Description

Profile laser device for improving machining precision and machining method thereof

Technical Field

The application relates to the technical field of laser devices, in particular to a section laser device for improving machining precision and a machining method thereof.

Background

A profile laser device is a device for cutting profiles by laser. Compared with the traditional section bar cutting device, the laser cutting device has the advantage of higher processing efficiency, and is widely applied to the processing and production of section bars.

The existing profile laser cutting device mostly comprises a machine body and a cutting device. The cutting device is a laser probe with a mounting frame, the mounting frame is movably arranged on the machine body, and the laser probe is arranged on the mounting frame. The section bar that operating personnel will wait to cut is placed on the organism, and the mounting bracket makes laser probe follow different angles cutting section bar along the length or the width direction displacement of organism.

However, the contact area between the special-shaped section and the machine body is limited, and when the laser probe is used for processing the special-shaped section, the special-shaped section is easy to loose and swing relative to the machine body and move, so that the processing precision of the equipment on the section is greatly influenced.

Disclosure of Invention

In order to solve the problem that the machining precision of a laser device to a special-shaped section is low, the application provides a section laser device for improving the machining precision and a machining method thereof.

In a first aspect, the present application provides a profile laser device for improving processing accuracy, which adopts the following technical scheme:

a profile laser device for improving machining precision comprises a machine body and a cutting mechanism arranged on the machine body, and further comprises a limiting mechanism, wherein the limiting mechanism comprises a plurality of abutting parts, a supporting part, a driving part and a suction part; the machine body is provided with a plurality of preset channels, and the machine body is also provided with assembly channels communicated with all the preset channels; the driving part is arranged in the side wall of the assembly channel, one of the contact parts is correspondingly arranged in the side wall of a preset channel, and the supporting part is connected with the driving part and used for supporting the contact part in the preset channel; the suction part comprises a suction piece and a plurality of air suction pipes, the suction piece is arranged in the side wall of the assembly channel, one end of each air suction pipe is connected with the suction piece, and the other end of each air suction pipe is arranged on the abutting part, so that the section abutting against the abutting part is positioned on the machine body.

By adopting the technical scheme, the large-size section bar is placed on the machine body, the suction piece sucks air at the position where the abutting part abuts against the section bar through the air suction pipe, so that a negative pressure space is formed at the position where the abutting part abuts against the section bar, the section bar is stably adsorbed at the abutting part, the position stability of the section bar on the machine body is guaranteed, the phenomena of loosening and shaking and deviation of the section bar in the cutting process are reduced, and the processing precision of the laser device on the section bar is improved; the driving part can push the supporting part and the abutting parts to displace along the vertical direction, so that the two adjacent abutting parts can clamp the sectional material above the machine body together, the small-sized sectional material is positioned on the machine body, and the processing precision of the laser device to the small-sized sectional material is further facilitated to be guaranteed.

In a specific possible embodiment, the interference part comprises a top connecting strip and a clamping block, and the clamping block is arranged on the top connecting strip; the supporting part comprises a supporting plate and a plurality of side connection plates, all the side connection plates are arranged on the supporting plate, and a clamping area is formed between every two adjacent side connection plates; the driving part comprises a driving cylinder which is arranged in the side wall of the assembling channel; the supporting plate is arranged on the output end of the driving cylinder, and the two side connecting plates with the clamping areas are positioned in the same preset channel; the top connection strip is located in the side wall of the preset channel, the clamping block abuts against the inside of the side wall of the clamping area, a first channel penetrates through the top connection strip, a second channel penetrates through the clamping block, and the air suction pipe penetrates through the second channel and then is located in the side wall of the first channel.

By adopting the technical scheme, the clamping block is tightly propped against the clamping area, so that the jacking strip is stably positioned in the side wall of the preset channel; one end of the air suction pipe, far away from the suction piece, penetrates through the second channel and is positioned in the side wall of the first channel, and at the moment, the air suction pipe is connected with the air at the position of the section bar through the suction top, so that the section bar is stably positioned at the position of the top connection bar, the position stability of the section bar on the machine body is guaranteed, and the cutting precision of the laser device on the section bar is guaranteed.

In a particular possible embodiment, the suction part further comprises a connection unit comprising a circumscribing coaming and a locking bolt; the external coaming plate is arranged on the air suction pipe, and the locking bolt is used for connecting the external coaming plate to the clamping block.

Through adopting above-mentioned technical scheme, external bounding wall has increased the area of contact of breathing pipe with the screens piece, but locking bolt fixed connection external bounding wall and screens piece fast, and then help guaranteeing the positional stability and the application stability of breathing pipe in first passageway.

In a specific possible embodiment, the limiting mechanism further comprises a blocking portion, the blocking portion comprises a plurality of stop ring plates, and all the stop ring plates are rotatably arranged on the machine body so that the top connecting strip is positioned in the side wall of the preset channel; one end of each stop ring plate is provided with a yielding plane which is used for separating the stop ring plate from the top connecting strip.

By adopting the technical scheme, the stop ring plate simultaneously tightly abuts against the butting strip and the machine body, so that the butting strip is stably positioned in the side wall of the preset channel, and the phenomenon that the butting strip penetrates through the preset channel is reduced; when the operator rotates the stop ring plate to enable the yielding plane to face the preset channel, the operator can freely push the top connecting strip into or pull the top connecting strip out of the preset channel.

In a specific possible embodiment, the support portion further comprises an interference piece, the interference piece is arranged on the side connecting plate, and the interference piece is in interference fit between the clamping block and the side connecting plate.

Through adopting above-mentioned technical scheme, the interference piece supports tightly between screens piece and side connection board through the compression deformation of self, has ensured the positional stability of screens piece in clamping area, and then helps guaranteeing the positional stability and the application stability of top joint strip.

In a specific possible embodiment, the driving part further comprises a plurality of sets of guide units, each guide unit comprising an orientation rod and a guide cylinder; the orientation rod is arranged on the supporting plate, the guide cylinder is arranged in the side wall of the assembly channel, and one end, close to the guide cylinder, of the orientation rod is located in the guide strip.

Through adopting above-mentioned technical scheme, when driving actuating cylinder control output and going up and down, the guide bar slides in the guide cylinder, and the guide cylinder provides the side direction support to the guide bar to reduce the backup pad and appear loosening by a wide margin in the lift in-process and shake, the phenomenon of migration, and then help guaranteeing positional stability and application stability of section bar on the organism.

In a specific implementation scheme, the side wall of the top joint strip is further provided with an external channel communicated with the first channel, the driving cylinder controls the top joint strip to move to the position above the machine body, and a positioning area for positioning the section bar is formed between every two adjacent top joint strips.

Through adopting above-mentioned technical scheme, when driving the overhanging output of actuating cylinder, the top connects the one end that the card position piece was kept away from to the strip and the equal displacement of external channel to organism top, and at this moment, the easy suction effort of external channel department of the section bar that is located the positioning area adsorbs, fixes a position, and then helps guaranteeing the positional stability of section bar on the organism.

In a specific possible implementation scheme, an inner embedded groove is further formed in the side wall of the top connecting strip, and a propping unit is arranged in the side wall of the inner embedded groove; the abutting unit comprises abutting blocks and a plurality of groups of elastic pieces, wherein one end of each elastic piece is arranged in the side wall of the inner embedded groove, and the abutting blocks are arranged at the other ends of the elastic pieces.

By adopting the technical scheme, the section bar is abutted into the inner cavity of the positioning area, the abutting block is abutted against the section bar, and the elastic piece is stressed and compressed; at the moment, the elastic element reacts on the section bar through the elastic acting force of the elastic element, so that the section bar is stably positioned in the side wall of the positioning area, the position stability of the section bar on the machine body is guaranteed, and the processing precision of the laser device on the section bar is improved.

In a second aspect, the present application further provides a processing method of a profile laser device for improving processing accuracy, where the processing method includes the following processing steps:

positioning large-size sectional materials: the large-size section is placed on the top wall of the machine body, the section abuts against the abutting part, the air at the abutting part is sucked by the suction piece through the air suction pipe, and a negative pressure space is formed at the abutting part of the abutting part and the section, so that the position stability of the large-size section on the machine body is improved;

positioning the small-size section bar: the supporting part is jacked up through the driving part, so that the abutting part arranged on the supporting part penetrates through the preset channel to be displaced to the upper part of the machine body; placing the small-size section between two adjacent interference parts; the suction piece sucks air at the position of the abutting parts through the air suction pipe, so that the section bar abuts between the two abutting parts;

processing the section bar: the cutting mechanism moves on the machine body to cut the large-size section or the small-size section.

By adopting the technical scheme, the section bar placed on the machine body can be cut efficiently and with high precision by an operator, and the process effectively ensures the processing precision of the laser device on the section bar.

In summary, the present application has the following beneficial technical effects:

1. the large-size section is placed on the machine body, the suction piece sucks air at the position where the abutting part abuts against the section through the air suction pipe, so that a negative pressure space is formed at the position where the section abuts against the abutting part, the section is stably adsorbed at the abutting part, the position stability of the section on the machine body is guaranteed, the phenomena of loosening and swinging and deviation of the section in the cutting process are reduced, and the processing precision of a laser device on the section is improved; the driving part can push the supporting part and the abutting parts to displace along the vertical direction, so that two adjacent abutting parts can clamp the sectional material together above the machine body, the small-sized sectional material can be conveniently positioned on the machine body, and the processing precision of the laser device on the small-sized sectional material can be further guaranteed;

2. when the overhanging output of actuating cylinder, the top connects the one end and the equal displacement of external channel of screens piece to organism top, and at this moment, the easy suction effort of being located external channel department of section bar in the positioning region adsorbs, fixes a position, and then helps guaranteeing the positional stability of section bar on the organism.

Drawings

FIG. 1 is a schematic sectional view of a profile laser device for improving processing accuracy in an embodiment of the present application;

FIG. 2 is a schematic view of an embodiment of the present application for illustrating the interference part;

FIG. 3 is a schematic diagram for showing the positional relationship of the top rod connecting machine body in the embodiment of the present application;

fig. 4 is an enlarged schematic view of a portion a in fig. 1.

Description of reference numerals:

1. a body; 11. presetting a channel; 12. assembling a channel; 2. a cutting mechanism; 21. a support frame; 22. a laser head; 3. a limiting mechanism; 4. a contact part; 41. butting the strips; 411. a positioning area; 412. a first channel; 413. connecting a channel externally; 414. an embedded groove is formed; 42. a card position block; 421. a second channel; 5. a support portion; 51. a support plate; 52. a side joint plate; 521. a clamping area; 522. an interference piece; 6. a drive section; 61. a driving cylinder; 62. a guide unit; 621. an orientation lever; 622. a guide cylinder; 7. a suction section; 71. a suction member; 72. an air suction pipe; 73. a connection unit; 731. connecting a coaming externally; 732. locking the bolt; 8. a clamping part; 81. a stop ring plate; 82. a yielding plane; 9. a tightening unit; 91. a propping block; 92. an elastic member.

Detailed Description

The embodiment of the application discloses a section laser device for improving machining precision.

The present application is described in further detail below with reference to the accompanying drawings, 8230.

Referring to fig. 1 to 4, the laser device includes a body 1, a cutting mechanism 2, and a limit mechanism 3. Wherein, the machine body 1 is placed on the ground, and the top wall of the machine body 1 is used for bearing the section bar to be processed. Cutting mechanism 2 includes support frame 21 and laser head 22, and support frame 21 slides and sets up on organism 1, and laser head 22 slides and sets up on support frame 21. In this embodiment, the supporting frame 21 can be displaced along the length direction of the machine body 1, and the laser head 22 can be displaced along the length direction of the supporting frame 21, so that the laser head 22 can cut and process the profile. It should be noted that the profiles processed in the embodiments of the present application may be profile profiles, and the profile profiles are described as the same below.

Referring to fig. 1, a limiting mechanism 3 is disposed on the machine body 1 for limiting the position of the profile on the machine body 1. The limiting mechanism 3 comprises a plurality of abutting parts 4, a supporting part 5, a driving part 6 and a suction part 7.

Referring to fig. 2 and 3, each of the abutting portions 4 includes a top receiving bar 41 and a locking block 42, the locking block 42 is welded to the top receiving bar 41, and a width dimension of the top receiving bar 41 is greater than a width dimension of the locking block 42. The top wall of the machine body 1 is provided with a plurality of preset channels 11, the inner diameter of the preset channels 11 is matched with the outer circumference of the top connecting strip 41, and in the embodiment, a group of collision parts 4 are positioned in the side wall of one preset channel 11 after being supported by the supporting part 5 and the driving part 6.

Referring to fig. 2, the top wall of the top connecting strip 41 is coplanar with the top wall of the machine body 1, and in order to reduce the position stability of the top connecting strip 41 in the preset channel 11, the limiting mechanism 3 further includes a clamping portion 8. The positioning portion 8 includes a plurality of stop ring plates 81, each stop ring plate 81 is rotatably disposed on the machine body 1 through a rotating shaft, in this embodiment, two ends of each preset channel 11 in the length direction are respectively provided with one stop ring plate 81, so as to reduce the phenomenon that the top connecting strip 41 passes through the preset channel 11.

Referring to fig. 2, one end of each stop ring plate 81 is further provided with a yielding plane 82, and an operator rotates the stop ring plate 81 to enable the yielding plane 82 to face the preset channel 11. At this time, the stop ring plate 81 is only located on the top wall of the machine body 1, and the operator can freely pass or push the top connecting bar 41 into the inner cavity of the preset passage 11.

Referring to fig. 1, the machine body 1 is further provided with assembly channels 12, the assembly channels 12 are located below all the preset channels 11, and the inner cavities of all the preset channels 11 are communicated with the inner cavity of the assembly channel 12. The support portion 5 includes a support plate 51 and a plurality of side joint plates 52, all the side joint plates 52 are welded to a top wall of the support plate 51 in a vertical direction, and a clamping area 521 is formed between two adjacent side joint plates 52.

Referring to fig. 1 and 4, the mutually facing side walls of the two side plates 52 formed with the clamping area 521 are respectively glued with an interference piece 522 by glue, and in this embodiment, the interference piece 522 may be a rubber pad which is flexible and easy to deform. The supporting plate 51 is suspended in the assembly channel 12 through the driving portion 6, and two side connecting plates 52 forming a clamping area 521 are a group and are correspondingly inserted into the side wall of one preset channel 11.

Referring to fig. 1, in the present embodiment, the driving part 6 includes a driving cylinder 61, the driving cylinder 61 is fixed to an inner bottom wall of the fitting passage 12 by bolts, and the support plate 51 is welded to an output end of the driving cylinder 61.

Referring to fig. 1 and 4, when the output end of the driving cylinder 61 is in a contracted state, the bottom wall of the top contact strip 41 abuts against the top wall of the side contact plate 52, and the blocking block 42 abuts against between the two side contact plates 52 with the interference member 522. At this time, the top wall of the top connecting strip 41 and the top wall of the machine body 1 are in a coplanar state, and an operator can place a large-size section bar on the machine body 1 so as to perform cutting operation by the cutting mechanism 2.

Referring to fig. 1 and 4, after the operator rotates the stop ring plate 81 to make the abdicating plane 82 face the preset channel 11, the extended output end of the air cylinder 61 is driven, the support plate 51 moves upward along the vertical direction, so that the side connection plate 52 pushes the abutting strip 41 to move until the end of the abutting strip 41 far away from the clamping block 42 is located above the machine body 1. At this time, a positioning area 411 is formed between two adjacent top joint strips 41, and an operator can clamp one end of the small-sized section bar close to the machine body 1 in the side wall of the positioning area 411, so that the machine body 1 can cut the small-sized section bar.

Referring to fig. 1, in order to improve the stability of the lifting of the support plate 51, the driving part 6 further includes a guide unit 62, and the guide unit 62 includes a guide rod 621 and a guide cylinder 622. Wherein the orientation bar 621 is welded to the support plate 51 in a vertical direction, the guide cylinder 622 is welded to the inner bottom wall of the assembly passage 12 in the vertical direction, and one end of the orientation bar 621 close to the guide cylinder 622 is located in the side wall of the guide cylinder 622. When the output end of the cylinder 61 is driven to extend, the orientation rod 621 slides in the guide cylinder 622, and the guide cylinder 622 provides lateral support for the orientation rod 621 to ensure the lifting stability of the support plate 51.

Referring to fig. 1 and 4, the suction part 7 includes a suction member 71 and a plurality of suction pipes 72, and in this embodiment, the suction member 71 may be a vacuum extractor, and the number of the suction pipes 72 is equal to the number of the preset passages 11. The suction member 71 is fixed to the inner bottom wall of the predetermined passage 11 by bolts, one end of each suction pipe 72 is connected to the suction end of the suction member 71, and the end of each suction pipe 72 remote from the suction member 71 is connected to the abutting portion 4.

Referring to fig. 1 and 4, a first channel 412 is penetratingly disposed on the top connecting bar 41, and a second channel 421 is disposed on the position-locking block 42, in this embodiment, central axes of the first channel 412 and the second channel 421 are collinear. The suction part 7 further includes a connection unit 73, and the connection unit 73 includes an outer surrounding plate 731 and a locking bolt 732, wherein the outer surrounding plate 731 is glued to the outer circumferential wall of the suction pipe 72 by glue. The end of the air suction pipe 72 far from the suction member 71 passes through the second channel 421 and is positioned in the side wall of the first channel 412, at this time, the top wall of the external enclosing plate 731 abuts against the bottom wall of the locking block 42, the operator passes through the external enclosing plate 731 through the locking bolt 732 and screws in a predetermined threaded groove on the outer side wall of the locking block 42, so that the external enclosing plate 731 is fixedly connected with the locking block 42, and the air suction pipe 72 is positioned in the side wall of the first channel 412.

Referring to fig. 1 and 4, when the profile is located on the machine body 1, the suction member 71 sucks air at the position where the top contact strip 41 abuts against the profile through the air suction pipe 72, so that a negative pressure space is formed at the position where the profile abuts against the top contact strip 41, and the profile is sucked and abuts against the top contact strip 41. This process has effectively ensured the positional stability of section bar on organism 1, and then has effectively reduced the phenomenon that the section bar appears the pine and shakes, moves partially in the cutting process, helps improving the machining precision of laser device to the section bar.

Referring to fig. 1 and 4, the side wall of the top connecting bar 41 is further provided with an external channel 413 communicated with the first channel 412, and in this embodiment, the external channel 413 is communicated with the positioning area 411. When the extended output end of the driving cylinder 61 is located above the machine body 1, the end of the abutting bar 41 away from the position-locking block 42 is located above the machine body 1, and the external passage 413 is also located above the machine body 1. At this time, the suction force generated at the external passage 413 can make the profile be stably positioned in the sidewall of the positioning region 411.

Referring to fig. 4, in order to improve the position stability of the profile in the positioning area 411, an inner insertion groove 414 is further disposed on the sidewall of the abutting strip 41, and a fastening unit 9 is disposed in the sidewall of the inner insertion groove 414. The abutting unit 9 includes an abutting block 91 and a plurality of sets of elastic members 92, in this embodiment, the elastic members 92 may be made of steel compression springs, one end of each elastic member 92 is welded in the sidewall of the inner embedded groove 414, and the abutting block 91 is welded at the other end of the elastic member 92. When the elastic element 92 is in the freely extended state, the end of the abutment block 91 remote from the elastic element 92 is located outside the inner embedding slot 414 for abutting against the profile located in the positioning area 411. After the elastic member 92 is compressed by a force, the abutting block 91 can completely abut into the sidewall of the inner insertion groove 414.

The embodiment of the application provides a profile laser device for improving the processing precision, and the implementation principle is as follows: when the output end of the driving cylinder 61 is in a contracted state, the top wall of the top connecting bar 41 is coplanar with the top wall of the machine body 1, and at the moment, the machine body 1 is suitable for placing large-size profiles for cutting and processing.

The air that suction piece 71 passed through breathing pipe 72 suction butt strip 41 and section bar butt department makes the butt position of butt strip 41 and section bar form the negative pressure space, and then makes the section bar by comparatively stable absorption, be located on butt strip 41 to ensure the positional stability of section bar on organism 1, reduce the phenomenon that the section bar appears the pine and shakes, moves partially in the course of working, improve the machining precision of laser device to the section bar.

When the output end of the cylinder 61 is driven to extend, the supporting plate 51 drives the side connecting plate 52 to move upward along the vertical direction, and the side connecting plate 52 pushes one end of the abutting strip 41 far away from the clamping block 42 to move above the machine body 1. At this time, an operator can place a small-sized profile into the sidewall of the positioning area 411, and the abutting block 91 abuts against the outer sidewall of the profile, so as to ensure the positional property of the profile on the machine body 1, thereby facilitating the improvement of the processing precision of the laser device on the profile.

The embodiment of the application also discloses a processing method of the profile laser device for improving the processing precision, which comprises the following processing steps:

positioning large-size sectional materials: the large-size section is placed on the top wall of the machine body 1, the section abuts against the abutting portion 4, the air in the abutting portion 4 is sucked by the suction piece 71 through the air suction pipe 72, a negative pressure space is formed at the abutting portion 4 and the section, and therefore the position stability of the large-size section on the machine body 1 is improved.

Positioning the small-size section bar: the supporting part 5 is lifted up through the driving part 6, so that the interference part 4 arranged on the supporting part 5 passes through the preset channel 11 to be displaced to the upper part of the machine body 1; placing the small-size section between two adjacent interference parts 4; the suction member 71 sucks air from the abutting portions 4 through the suction pipe 72, so that the profile abuts between the two abutting portions 4.

Processing the section bar: the cutting mechanism 2 is displaced on the machine body 1 to perform a cutting process on a large-sized profile or a small-sized profile.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an improve section bar laser device of machining precision, includes organism (1) and sets up cutting mechanism (2) on organism (1), its characterized in that: the laser device further comprises a limiting mechanism (3), wherein the limiting mechanism (3) comprises a plurality of abutting parts (4), a supporting part (5), a driving part (6) and a suction part (7); the machine body (1) is provided with a plurality of preset channels (11), and the machine body (1) is also provided with assembly channels (12) communicated with all the preset channels (11); the driving parts (6) are arranged in the side walls of the assembling channel (12), one of the collision parts (4) is correspondingly arranged in the side wall of one preset channel (11), and the supporting part (5) is connected with the driving parts (6) and is used for supporting the collision part (4) in the preset channel (11); the suction part (7) comprises a suction piece (71) and a plurality of air suction pipes (72), the suction piece (71) is arranged in the side wall of the assembly channel (12), one end of each air suction pipe (72) is connected with the suction piece (71), the other end of each air suction pipe (72) is arranged on the abutting part (4), and a section abutting against the abutting part (4) is positioned on the machine body (1).

2. The profile laser device for improving the processing precision according to claim 1, wherein: the interference part (4) comprises a top connection strip (41) and a clamping block (42), and the clamping block (42) is arranged on the top connection strip (41); the supporting part (5) comprises a supporting plate (51) and a plurality of side connecting plates (52), all the side connecting plates (52) are arranged on the supporting plate (51), and a clamping area (521) is formed between every two adjacent side connecting plates (52); the driving part (6) comprises a driving cylinder (61), and the driving cylinder (61) is arranged in the side wall of the assembling channel (12); the supporting plate (51) is arranged on the output end of the driving cylinder (61), and the two side connecting plates (52) formed with the clamping area (521) are positioned in the same preset channel (11); the top connecting strip (41) is located in a side wall of a preset channel (11), the clamping block (42) abuts against the side wall of the clamping area (521), a first channel (412) penetrates through the top connecting strip (41), a second channel (421) penetrates through the clamping block (42), and the air suction pipe (72) penetrates through the second channel (421) and then is located in the side wall of the first channel (412).

3. The profile laser device for improving the processing precision according to claim 2, wherein: the suction part (7) further comprises a connecting unit (73), and the connecting unit (73) comprises an external enclosing plate (731) and a locking bolt (732); the external enclosing plate (731) is arranged on the air suction pipe (72), and the locking bolt (732) is used for connecting the external enclosing plate (731) to the clamping block (42).

4. The profile laser device for improving processing accuracy according to claim 2, wherein: the limiting mechanism (3) further comprises a clamping part (8), the clamping part (8) comprises a plurality of stop ring plates (81), and all the stop ring plates (81) are rotatably arranged on the machine body (1) so that the top connecting strip (41) is positioned in the side wall of the preset channel (11); one end of each stop ring plate (81) is provided with a yielding plane (82), and the yielding plane (82) is used for enabling the stop ring plate (81) to be separated from the top connecting strip (41).

5. The profile laser device for improving the processing precision according to claim 2, wherein: the support portion (5) further comprises an interference piece (522), the interference piece (522) is arranged on the side connection plate (52), and the interference piece (522) is in interference fit between the clamping block (42) and the side connection plate (52).

6. The profile laser device for improving the processing precision according to claim 2, wherein: the driving part (6) further comprises a plurality of groups of guide units (62), wherein each guide unit (62) comprises an orientation rod (621) and a guide cylinder (622); the orientation rod (621) is arranged on the support plate (51), the guide cylinder (622) is arranged in the side wall of the assembly channel (12), and one end, close to the guide cylinder (622), of the orientation rod (621) is located in the guide strip.

7. The profile laser device for improving the processing precision according to claim 2, wherein: still be provided with on the lateral wall of top joint strip (41) with communicating external passageway (413) of first passageway (412), drive actuating cylinder (61) control top joint strip (41) displacement to organism (1) top, adjacent two form between top joint strip (41) and be used for the location area (411) of location section bar.

8. The profile laser device for improving processing accuracy according to claim 7, wherein: an inner embedded groove (414) is further formed in the side wall of the top connecting strip (41), and a propping unit (9) is arranged in the side wall of the inner embedded groove (414); the abutting unit (9) comprises abutting blocks (91) and a plurality of groups of elastic pieces (92), one end of each elastic piece (92) is arranged in the side wall of the inner embedded groove (414), and the abutting blocks (91) are arranged at the other ends of the elastic pieces (92).

9. A processing method of the profile laser device for improving processing accuracy according to any one of claims 1 to 8, characterized in that: the processing method comprises the following processing steps:

positioning large-size sectional materials: placing the large-size section on the top wall of the machine body (1) to enable the section to abut against the abutting part (4), and enabling the suction piece (71) to suck air at the abutting part (4) through the air suction pipe (72) to enable the abutting part (4) to abut against the section to form a negative pressure space, so that the position stability of the large-size section on the machine body (1) is improved;

positioning the small-size section bar: the supporting part (5) is jacked up through the driving part (6), so that the abutting part (4) arranged on the supporting part (5) penetrates through the preset channel (11) to be displaced above the machine body (1); placing the small-size section bar between two adjacent interference parts (4); the suction piece (71) sucks air at the position of the abutting parts (4) through the air suction pipe (72) so that the section bar abuts between the two abutting parts (4);

processing the section bar: the cutting mechanism (2) is displaced on the machine body (1) to carry out cutting treatment on the large-size section bar or the small-size section bar.