CN112917019A - Laser cutting apparatus and control method thereof - Google Patents

Abstract

One or more embodiments of the present specification provide a laser cutting apparatus and a control method thereof; the laser cutting apparatus includes: the laser cutting device comprises a field lens for focusing laser to cut and a processing platform for bearing a product to be cut; the laser cutting device further comprises: a dust shield positioned between the field lens and the processing platform; the dustproof baffle is provided with a hollow area; the position of the hollow area corresponds to the cutting line of the product to be cut, so that laser can penetrate through the hollow area and cut the product; the part of the dustproof baffle except the hollow area is used for blocking dust generated by cutting; and the blowing device is positioned between the dustproof baffle and the field lens and is used for blowing airflow in the direction far away from the field lens so as to remove dust passing through the hollowed-out area. The scheme of this disclosure can effectually prevent that the dust from being close to or adsorbing in the field lens, prevents that the field lens from being contaminated, maintains laser power's stability, and then promotes the utilization rate of product yield and laser cutting equipment.

Description

Laser cutting apparatus and control method thereof

Technical Field

One or more embodiments of the present disclosure relate to the field of laser cutting technology, and in particular, to a laser cutting apparatus and a control method thereof.

Background

In the production process of the display panel, the whole display layer pattern and the cutting mark line are required to be manufactured on the whole substrate, and after the manufacturing is finished, the whole substrate is cut along the cutting mark line by using laser cutting equipment so as to obtain a plurality of display panels; or carrying out special-shaped cutting on the single display panel which is cut well.

In the related art, after the laser cutting device is used for a period of time, abnormal reduction of laser power is very easy to occur, and further, a non-cutting-through bad phenomenon is caused, which seriously affects the yield of products cut by the display panel and the utilization rate of the laser cutting device.

Disclosure of Invention

In view of the above, an object of one or more embodiments of the present disclosure is to provide a laser cutting apparatus and a control method thereof.

In view of the above objects, one or more embodiments of the present specification provide a laser cutting apparatus including: the laser cutting device comprises a field lens for focusing laser to cut and a processing platform for bearing a product to be cut; the laser cutting device further comprises:

a dust shield positioned between the field lens and the processing platform; the dustproof baffle is provided with a hollow area; the position of the hollow area corresponds to the cutting line of the product to be cut, so that laser can penetrate through the hollow area and cut the product; the part of the dustproof baffle except the hollow area is used for blocking dust generated by cutting;

and the blowing device is positioned between the dustproof baffle and the field lens and is used for blowing airflow in the direction far away from the field lens so as to remove dust passing through the hollow area.

Based on the same inventive concept, one or more embodiments of the present specification further provide a control method of the laser cutting apparatus as described in any one of the above, including:

when the laser cutting equipment is used for cutting, laser passes through the hollow area of the dustproof baffle plate to cut, and dust generated by cutting is blocked by the part of the dustproof baffle plate except the hollow area;

when the laser cutting equipment is used for cutting, air flow is blown out in the direction far away from the field lens through the air blowing device, so that dust passing through the hollowed-out area is removed.

As can be seen from the above description, the laser cutting apparatus and the control method thereof provided in one or more embodiments of the present specification have a dust-proof baffle and an air blowing device disposed between the field lens and the processing platform; enabling laser to penetrate through the hollow area on the dustproof baffle for cutting, and blocking dust generated by cutting from diffusing towards the field lens direction through other parts of the dustproof baffle; will be blown off to the direction of keeping away from the field lens by the dust that the fretwork region passed through gas blowing device to prevent that the dust from further approaching the field lens, thereby effectually prevent that the dust is close to or adsorbs in the field lens, prevent that the field lens from being contaminated, maintain laser power's stability, and then promote the utilization rate of product yield and laser cutting equipment.

Drawings

In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings that are needed in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only one or more embodiments of the present specification, and that other drawings may be obtained by those skilled in the art without inventive effort from these drawings.

FIG. 1 is a schematic diagram of a laser cutting apparatus according to one or more embodiments of the present disclosure;

FIG. 2 is a schematic view of an air knife configuration in one or more embodiments of the present disclosure;

FIG. 3 is a schematic diagram illustrating the arrangement of the blowing direction of the air knife in one or more embodiments of the present disclosure;

FIG. 4 is a schematic view of an auxiliary baffle in one or more embodiments of the present disclosure;

FIG. 5 is a schematic structural diagram of a laser cutting apparatus with an auxiliary blowing device according to one or more embodiments of the present disclosure;

fig. 6 is a flowchart of a control method of a laser cutting apparatus according to one or more embodiments of the present disclosure.

Detailed Description

For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.

It is to be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in one or more embodiments of the specification is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

As described in the background section, in the related art, the entire substrate base is cut by a laser cutting apparatus to obtain a plurality of display panels. Dicing is laser carbonization of a portion of the substrate board corresponding to a dicing line. Wherein the carbonization process generates a large amount of smoke and dust. In the process of implementing the present disclosure, the applicant finds that, when cutting is performed in the related art, abnormal drop of laser power occurs because dust generated in the cutting process diffuses in the laser cutting device and is adsorbed on the surface of the field lens when the dust diffuses to the field lens, that is, contamination of the field lens is caused. The dust adsorbed on the surface of the field lens can influence the transmittance of the laser when the laser penetrates through the field lens, so that the transmittance of the laser is reduced, and the laser power is correspondingly reduced; due to the decrease of the laser power, the situation that the cutting is not cut through easily occurs, that is, the cutting is not successfully realized, which causes the reduction of the product yield and the utilization rate of the laser cutting equipment.

In view of the problems in the related art, one or more embodiments of the present specification provide a laser cutting apparatus and a control method thereof, in which a dust-proof baffle and an air blowing device are disposed between a field lens and a processing platform; enabling laser to penetrate through the hollow area on the dustproof baffle for cutting, and blocking dust generated by cutting from diffusing towards the field lens direction through other parts of the dustproof baffle; will be blown off to the direction of keeping away from the field lens by the dust that the fretwork region passed through gas blowing device to prevent that the dust from further approaching the field lens, thereby effectually prevent that the dust is close to or adsorbs in the field lens, prevent that the field lens from being contaminated, maintain laser power's stability, and then promote the utilization rate of product yield and laser cutting equipment.

Hereinafter, the technical means of the present disclosure will be described in further detail with reference to specific examples.

First, one or more embodiments of the present specification provide a laser cutting apparatus. Referring to fig. 1, the laser cutting apparatus includes: the device comprises a laser generator 01, a scanning galvanometer 02, a field lens 03 and a processing platform 04. Wherein the laser generator 01 is used for generating laser for cutting, and the specific type of the laser generator 01 can be selected from a gas laser, a solid laser, a semiconductor laser, a dye laser, etc. according to implementation requirements. The scanning galvanometer 02, which is a vector scanning device, can deflect the laser in predetermined different dimensions to achieve different cutting actions. The field lens 03 is used for focusing the laser and controlling the action area of the laser beam to realize cutting. The machining platform 04 serves to carry the product to be cut, which generally receives and fixes the product to be cut by means of structures, such as grooves, on the platform side facing the field lens 03.

Further, referring to fig. 1, the laser cutting apparatus of the present embodiment further includes: a dust guard 10 and an air blowing device 20.

The dustproof baffle 10 is of a solid plate-shaped structure and is arranged between the field lens 03 and the processing platform 04. The dustproof baffle 10 is provided with a hollow area 101, and the position of the hollow area 101 corresponds to the cutting line of the product to be cut borne on the processing platform 04. Specifically, when cutting is performed, the laser focused by the field lens 03 passes through the dust-proof baffle 10 from the hollow area 101, and cuts the cutting line of the product to be cut. As the cutting proceeds, a large amount of dust is generated; due to the small mass of the dust, the dust will be carried by the overall airflow and spread toward the field lens 03. The part of the dustproof baffle 10 except the hollow area 101 is of a solid structure, and in the process that dust diffuses towards the field lens 03, the part of the dustproof baffle 10 except the hollow area 101 can block the dust, so that most of dust is blocked and kept in the space between the dustproof baffle 10 and the processing platform 04.

The material of the dust-proof baffle 10 can be flexibly selected according to implementation requirements, and can be, for example, a metal or alloy material such as stainless steel and aluminum alloy, or an organic material such as acrylic (PMMA), Polycarbonate (PC), polyvinyl chloride (PVC), and the like, and is manufactured by a one-step molding process. In addition, the dust-proof baffle plate can also be made of non-single materials. For example, the dustproof baffle may include an outer frame and a baffle main body disposed in the outer frame; the outer frame can be made of metal materials and is used for limiting the shape of the outer edge, providing certain structural strength and preventing deformation; the baffle main body is made of an organic material, and forms a solid part for blocking dust and a hollow area; the mode of adopting the outer frame of metal and the baffle main part of organic material can practice thrift the cost of manufacture to a certain extent.

Under general setting, can be provided with the subassembly that is used for cleaing away the dust between dust guard 10 and the processing platform 04, through this subassembly of cleaing away the dust, can clear away the dust between dust guard 10 and the processing platform 04 to guarantee the cleanness in this space, prevent to wait to cut the product and be polluted. The assembly for removing dust between the dust-proof baffle 10 and the processing platform 04 can be implemented by any relevant technology, and is not particularly limited in this embodiment.

And the air blowing device 20 is arranged between the dustproof baffle 10 and the field lens 03 and can blow air flow. The blowing device 20 can be selected from an air knife, a fan, an air duct, etc. according to specific implementation requirements. When cutting is performed, although most of dust generated by cutting is blocked by the dust-proof baffle 10, due to the arrangement of the hollow area 101, a small part of dust still passes through the hollow area 101 and enters a space between the dust-proof baffle 10 and the field lens 03. By setting the blowing angle of the blowing device 20, the airflow blown by the blowing device can travel along any direction far away from the field lens 03, and the dust passing through the hollow area 101 can be blown away by the airflow blown by the blowing device 20 towards the direction far away from the field lens 03, so that the dust is prevented from approaching and being adsorbed on the field lens 03.

Specifically, since the field lens 03 and the processing platform 04 are generally disposed in a vertically opposite manner, the direction away from the field lens 03 may be a horizontal direction (as indicated by the dashed arrow in fig. 1). In addition, the direction away from the field lens 03 may be inclined by a predetermined angle toward the dust guard 10; wherein the predetermined angle is an included angle between the blowing direction of the blowing device 20 and the horizontal direction. The blowing device 20 is arranged to blow air obliquely towards the dust-proof baffle 10, so that dust is blown away just after passing through the hollow area 101, and the dust can be further prevented from approaching the field lens 03.

According to the embodiment, the laser cutting equipment is provided with the dustproof baffle and the air blowing device between the field lens and the processing platform; enabling laser to penetrate through the hollow area on the dustproof baffle for cutting, and blocking dust generated by cutting from diffusing towards the field lens direction through other parts of the dustproof baffle; will be blown off to the direction of keeping away from the field lens by the dust that the fretwork region passed through gas blowing device to prevent that the dust from further approaching the field lens, thereby effectually prevent that the dust is close to or adsorbs in the field lens, prevent that the field lens from being contaminated, maintain laser power's stability, and then promote the utilization rate of product yield and laser cutting equipment.

As an alternative embodiment, the air blowing device is an air knife. The air knife is an instrument which is usually used for cleaning, air drying and drying in the process of processing and producing precise devices, compressed air enters the air knife and then is blown out through an air outlet in a narrow gap shape to form a high-speed air flow slice, and the air flow slice guides ambient air, so that an even high-strength slice air curtain is formed, and the purposes of drying and cleaning are achieved. Under the application field lens of the laser cutting of the display panel, the dust can be better removed by using the air knife.

Specifically, referring to fig. 2 and 3, in the present embodiment, the air blowing device 20 is an air knife, which specifically includes: the air knife comprises an air knife main body 201 and an air outlet 202 arranged on the air knife main body. The air knife main body 201 is a long strip-shaped structure and is used for bearing and arranging other components; the specific length of the air knife main body 201 can be selected correspondingly according to the specification of the laser cutting equipment, and generally, the air knife main body 201 can be adapted to the dustproof baffle plate for ensuring that the air knife main body 201 can completely cover the dustproof baffle plate, particularly a hollow area on the dustproof baffle plate. The air outlet 202 is an air outlet portion, and in order to achieve uniform air outlet, the air outlet 202 is configured as a long and narrow slit extending along the length direction of the air knife main body 201.

Referring to fig. 3, in the present embodiment, the air blowing device 20 is disposed in such a manner that the air outlet 202 is inclined at a predetermined angle toward the direction close to the dust-proof barrier 10. Under a general arrangement, an airflow field W is formed after the airflow is blown out from the air outlet 202; referring to fig. 3, the airflow field W gradually diverges from the direction approaching the outlet 202 to the direction away from the outlet 202. This allows a portion of the airflow field W to be above horizontal when the outlet 202 is horizontally disposed or inclined at a small angle, and the airflow in the portion above horizontal has a tendency to move upward (toward the field lens), and when the dust receives the airflow in this portion, there is a certain possibility of approaching the field lens and causing pollution.

In this embodiment, in order to further improve the effect of preventing dust from approaching the field lens, and considering the distribution characteristics of the airflow field W formed by the air outlet 202, the air outlet 202 is inclined along with the air knife main body 201 by setting the air knife main body 201 to be inclined toward the dustproof baffle, and the upper edge (i.e., the edge near the field lens) of the conical airflow field W formed by the air outlet 202 is made to be at a horizontal position (shown in a in fig. 3) or lower than the horizontal position. Through the arrangement, the airflow blown out from the air outlet 202 does not have any tendency of moving towards the direction of the field lens, so that dust passing through the dustproof baffle plate can be prevented from being blown towards the direction of the field lens, and the field lens is prevented from being polluted.

As an alternative embodiment, referring to fig. 4, the laser cutting apparatus further includes: an auxiliary baffle 30. The auxiliary baffle 30 is disposed on the dust-proof baffle 10, and the auxiliary baffle 30 can partially shield the hollow area 101, so that the edge of the part of the auxiliary baffle 30, which is used for shielding the hollow area 101, and the part of the hollow area 101, which is not shielded, are overlapped to form a new hollow area 101 with different size or shape. As shown in fig. 4, the original hollow area 101 of the dust-proof baffle 10 is rectangular; by providing the auxiliary baffle 30, the auxiliary baffle 30 partially blocks the original hollow area 101 along the long side direction of the rectangle. Thereby forming a new square hollowed-out area 101. Through the setting of auxiliary baffle 30, can adjust its size, shape on the basis of former fretwork area 101 to satisfy the product of waiting to cut of different grade type, specification. Like this, when cutting the product of waiting of different grade type, specification, need not loaded down with trivial details change matched with dust damper 10 with it again, only need through set up on dust damper 10 auxiliary baffle 30 can, easy and simple to handle is favorable to promoting cutting efficiency.

In this embodiment, the auxiliary baffle 30 is detachably connected to the dust-proof baffle 10. The specific manner of detachable connection can be flexibly selected according to implementation requirements. For example, when the material of the dust-proof baffle 10 is a stainless steel material (martensite type stainless steel) with magnetism, correspondingly, the auxiliary baffle 30 is made of a magnetic metal material or a non-metal material distributed with magnetic particles, and the auxiliary baffle 30 is detachably disposed on the dust-proof baffle 10 by means of magnetic adsorption. In addition, the auxiliary baffle 30 and the dust-proof baffle 10 can be detachably connected by arranging a detachable connecting piece on the two, for example, holes are formed in the auxiliary baffle 30 and the dust-proof baffle 10, and the two are connected by bolts.

As an alternative embodiment, referring to fig. 1, the present embodiment further shows specific position setting parameters of the field lens 3, the dust-proof baffle 10, the air blowing device 20 and the processing platform 04 with respect to each other.

Since the dust removing assembly is disposed in the space between the dust-proof barrier 10 and the processing platform 04, a sufficient space should be provided for the dust removing assembly. Therefore, the distance between the dust-proof baffle 10 and the processing platform 04 is set to be not less than 300 mm to meet the above requirements.

The distance between the air blowing device 20 and the field lens 03 is not less than 50 mm. Considering that the distance between the blowing device 20 and the field lens 03 cannot be too small, when the distance between the blowing device 20 and the field lens 03 is too small, the airflow blown by the blowing device 20 is relatively close to the field lens 03, and dust is easily blown to the vicinity of the field lens 03, which causes adverse effects. The distance between the air blowing device 20 and the field lens 03 is set to be not less than 50 mm to avoid the above-mentioned adverse effects.

The distance between the air blowing device 20 and the dust-proof baffle 10 is set to be proportional to the area of the dust-proof baffle 10. The above arrangement is considered to be such that the end of the airflow field blown out by the air blowing device 20 can be located outside the dust-proof barrier 10 to prevent the dust carried in the airflow from being blown onto the surface of the dust-proof barrier 10 to cause more irregular movement to approach the field lens 03. Specifically, the larger the area of the dust-proof baffle 10 is, the larger the distance between the air blowing device 20 and the dust-proof baffle 10 should be, so as to ensure that the tail end of the airflow field blown out by the air blowing device 20 can be located outside the dust-proof baffle 10; on the contrary, when the area of the dust-proof baffle 10 is smaller, the distance between the air blowing device 20 and the dust-proof baffle 10 can be correspondingly reduced.

The specific parameters described in this embodiment are only examples, and all of the parameters may be adjusted accordingly according to specific implementation requirements. In addition, in order to further improve the accuracy, the setting of the specific parameters can be determined in a numerical simulation mode. The method comprises the steps of carrying out mathematical modeling on concrete parameters of a laser generator, a scanning galvanometer, a field lens, a dustproof baffle, a blowing device and a machining platform which are actually used and environmental parameters for cutting, and adjusting the concrete parameters in a computer numerical simulation mode to achieve the best setting effect.

As an alternative embodiment, referring to fig. 5, the laser cutting apparatus further includes: an auxiliary blowing device 40. The auxiliary air-blowing devices 40 are disposed at positions spaced apart from the air-blowing devices 20 by a predetermined distance. The auxiliary air blowing device 40 may be specifically selected from a fan, an air duct, an air knife, and the like, and is capable of blowing air vertically downward, so as to limit the diffusion of the dust removed by the air blowing device 20 through the air vertically downward.

According to the arrangement mode of the air blowing device 20, the air blowing device can blow the dust out of the laser cutting equipment to remove the dust. After being blown out to the outside of the laser cutting apparatus, the dust is likely to diffuse with the movement of the air flow in the environment outside the laser cutting apparatus, and the diffused dust may not be influenced by the air blowing device 20 to be located close to the field lens 3 or may diffuse everywhere in the environment where the laser cutting apparatus is located, which may have adverse effects. In the present embodiment, by the provision of the auxiliary air-blowing device 40 at a position spaced apart from the air-blowing device 20 by a predetermined distance, a vertically downward air flow (as indicated by a broken-line arrow at the auxiliary air-blowing device 40 in fig. 5) is formed on the movement path of the dust removed by the air-blowing device 20, so that the above-described removed dust is moved toward the lower portion of the laser cutting apparatus by the blow of the vertically downward air flow, and the scattering of the dust is avoided. After being blown to the lower part of the laser cutting device, the dust can be further removed by other dust removing assemblies in the related art.

In the embodiment, the auxiliary air blowing device 40 is used for further processing the dust removed by the air blowing device 20, so that the dust removing effect of the laser cutting equipment of the embodiment is further improved.

One or more embodiments of the present specification further provide a control method of a laser cutting apparatus based on the same inventive concept. The laser cutting equipment is the laser cutting equipment in any one of the embodiments.

Referring to fig. 6, the control method of the laser cutting apparatus includes the following steps:

step S601, when the laser cutting equipment performs cutting work, laser passes through the hollow area of the dustproof baffle plate to perform cutting, and dust generated by cutting is blocked by the part of the dustproof baffle plate except the hollow area;

step S602, when the laser cutting equipment is used for cutting, blowing air flow in a direction far away from the field lens through the air blowing device so as to remove dust passing through the hollowed-out area.

According to the control method of the laser cutting equipment, the laser penetrates through the hollow area on the dustproof baffle for cutting, and the dust generated by cutting is prevented from diffusing towards the field lens by other parts of the dustproof baffle; will be blown off to the direction of keeping away from the field lens by the dust that the fretwork region passed through gas blowing device to prevent that the dust from further approaching the field lens, thereby effectually prevent that the dust is close to or adsorbs in the field lens, prevent that the field lens from being contaminated, maintain laser power's stability, and then promote the utilization rate of product yield and laser cutting equipment.

It should be noted that the above description describes certain embodiments of the present disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the spirit of the present disclosure, features from the above embodiments or from different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present description as described above, which are not provided in detail for the sake of brevity.

It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the present disclosure.

Claims (10)

1. A laser cutting apparatus comprising: the laser cutting device comprises a field lens for focusing laser to cut and a processing platform for bearing a product to be cut; characterized in that, laser cutting equipment still includes:

a dust shield positioned between the field lens and the processing platform; the dustproof baffle is provided with a hollow area; the position of the hollow area corresponds to the cutting line of the product to be cut, so that laser can penetrate through the hollow area and cut the product; the part of the dustproof baffle except the hollow area is used for blocking dust generated by cutting;

and the blowing device is positioned between the dustproof baffle and the field lens and is used for blowing airflow in the direction far away from the field lens so as to remove dust passing through the hollow area.

2. The laser cutting apparatus according to claim 1, wherein the air blowing device is an air knife; the air knife comprises an air outlet, and the air outlet is inclined at a preset angle towards the direction close to the dustproof baffle.

3. The laser cutting apparatus according to claim 2, wherein the airflow blown out by the air outlet forms an airflow field, and an edge of the airflow field near one side of the field lens is in a horizontal position or below the horizontal position.

4. The laser cutting apparatus of claim 1, further comprising:

the auxiliary baffle is detachably arranged on the dustproof baffle and used for partially shielding the hollow area so as to adjust the size and/or shape of the hollow area.

5. The laser cutting apparatus according to claim 1, wherein the dust-proof shield is made of stainless steel or aluminum alloy.

6. The laser cutting apparatus of claim 1, wherein the dust guard comprises: the baffle plate comprises an outer frame and a baffle plate main body arranged in the outer frame; the baffle main body is made of acrylic, polycarbonate or polyvinyl chloride.

7. The laser cutting apparatus according to claim 1, wherein the distance between the dust-proof baffle and the processing platform is not less than 300 mm; the distance between the air blowing device and the field lens is not less than 50 mm; the distance between the air blowing device and the dustproof baffle is in direct proportion to the area of the dustproof baffle.

8. The laser cutting apparatus of claim 1, further comprising:

and the auxiliary air blowing device is positioned at a position separated from the air blowing device by a preset distance and used for blowing air flow downwards vertically so as to limit the diffusion of the dust removed by the air blowing device.

9. The laser cutting device according to claim 8, wherein the auxiliary blowing device is further provided with a filter assembly for purifying the gas flow blown by the auxiliary blowing device.

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

when the laser cutting equipment is used for cutting, laser passes through the hollow area of the dustproof baffle plate to cut, and dust generated by cutting is blocked by the part of the dustproof baffle plate except the hollow area;

when the laser cutting equipment is used for cutting, air flow is blown out in the direction far away from the field lens through the air blowing device, so that dust passing through the hollowed-out area is removed.

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