Laser cutting equipment

Abstract

The utility model discloses laser cutting equipment which is used for cutting a metal plate to generate metal liquid drops. The laser cutting equipment comprises a bearing table, a porous adsorption part, a negative pressure channel part and a first air exhaust channel part. The bearing table is provided with a through hole and a negative pressure hole. The porous adsorption piece is provided with a plurality of through holes. The through hole communicates with the negative-pressure hole. The negative pressure channel piece is provided with a negative pressure channel communicated with the negative pressure hole. The negative pressure channel piece is used for being connected with a negative pressure assembly. The negative pressure assembly is used for pumping out air in a negative pressure channel and a negative pressure hole of the negative pressure channel piece, so that the metal plate is adsorbed to the porous adsorption piece. The first air exhaust channel piece is provided with a first air exhaust channel communicated with the through hole. The first air exhaust channel piece is further used for being connected with an air exhaust assembly, and the air exhaust assembly is used for exhausting air in a first air exhaust channel of the first air exhaust channel piece, so that the metal liquid drops drip in the first direction.

Description

Technical Field

[0001] The utility model relates to a laser cutting device, and in particular to a laser cutting device which can efficiently recover metal droplets to prevent the metal droplets from adhering back to the surface of a metal plate. Background Art

[0002] Generally speaking, when a conventional laser cutting device is performing a cutting operation, the laser cutting device of the laser cutting device transmits a laser beam to the metal sheet to be cut, so that a point range of the metal sheet is continuously heated. After a period of heating, the metal sheet at one point will melt into liquid metal droplets to complete the processing of cutting the metal sheet. However, when the metal sheet is heated and changes from solid to liquid, the melted metal droplets usually adhere back to the cutting edge surface of the metal sheet, resulting in a plurality of protruding metal particles on the surface of the metal sheet, which affects the processing quality of the metal sheet. Utility Model Content

[0003] The utility model aims to provide a laser cutting device, which can prevent metal droplets from adhering back to the surface of the metal plate when the metal plate is cut.

[0004] The technical means adopted in the present utility model are as follows.

[0005] According to one embodiment of the utility model, the utility model provides a laser cutting device for cutting metal sheets. Metal droplets are generated when the metal sheet is cut. The laser cutting device includes a carrier, a porous adsorbent, a negative pressure channel member and a first air extraction channel member. The carrier has a first surface and a second surface relative to the first surface. The carrier has a through hole and a negative pressure hole that penetrate the first surface and the second surface. The negative pressure hole is adjacent to the through hole. The porous adsorbent is arranged in the negative pressure hole of the carrier and has a plurality of perforations. The perforations are connected to the negative pressure holes. The negative pressure channel member is connected to the second surface of the carrier. The negative pressure channel member has a negative pressure channel connected to the negative pressure hole. The negative pressure channel member is used to connect the negative pressure assembly. The negative pressure assembly is used to extract the air in the negative pressure channel and the negative pressure hole of the negative pressure channel member, so that the metal sheet is adsorbed onto the porous adsorbent. The first air extraction channel member is connected to the second surface of the carrier. The first air extraction channel member has a first air extraction channel connected to the through hole. The first air extraction channel member is further used to connect to an air extraction component, and the air extraction component is used to extract air in the first air extraction channel of the first air extraction channel member, so that the metal droplets drip along the first direction.

[0006] According to one embodiment of the utility model, the laser cutting device further includes a laser cutting component. The laser cutting component is disposed above the carrier. The laser cutting component is used to transmit a laser beam to the third surface of the metal sheet away from the first exhaust channel component. When cutting the metal sheet, the laser cutting component aligns the through holes in the first direction, and the upper surface of the porous adsorbent is flush with the first surface of the carrier. The first surface of the carrier and the upper surface of the porous adsorbent directly contact the fourth surface of the metal sheet relative to the third surface.

[0007] According to an embodiment of the utility model, the first air extraction channel member has a droplet collection groove at one end away from the through hole. The droplet collection groove is used to collect metal droplets dripping along the first direction. The through hole of the support platform is aligned with the center line of the first air extraction channel member.

[0008] According to one embodiment of the utility model, the above-mentioned laser cutting equipment further includes a second air suction channel member and a third air suction channel member. The second air suction channel member is arranged on a first side of the first air suction channel member. The second air suction channel member is formed with a second air suction channel connected to the first air suction channel. The second air suction channel member extends along a second direction, and the second direction is perpendicular to the first direction. The third air suction channel member is arranged on a second side of the first air suction channel member relative to the first side. The third air suction channel member is formed with a third air suction channel connected to the first air suction channel, wherein the third air suction channel member extends in the opposite direction of the second direction, and the third air suction channel member is aligned with the second air suction channel member in the second direction.

[0009] According to one embodiment of the utility model, the above-mentioned first air suction channel has a first side wall, a second side wall and a third side wall, the first side wall and the third side wall are parallel to the first direction, the second side wall is parallel to the second direction, and the first side wall, the second side wall and the third side wall are in a stepped structure.

[0010] According to an embodiment of the present invention, the first air suction channel member has a first side wall, a second side wall and a third side wall, and the third side wall is inclined in a direction away from the first side wall and the second side wall.

[0011] According to one embodiment of the utility model, the above-mentioned supporting platform has a first endpoint at the through hole of the first surface, the supporting platform has a second endpoint at the through hole of the inner surface between the first surface and the second surface, and the supporting platform has a third endpoint at the through hole of the second surface, and the first endpoint, the second endpoint and the third endpoint are not on the same straight line, the distance between the first endpoint and the second endpoint of the supporting platform is a first line segment, the distance between the second endpoint and the third endpoint of the supporting platform is a second line segment, and the ratio of the first line segment to the second line segment of the supporting platform is less than 1.

[0012] The technical effect produced by the utility model is that it can prevent the metal droplets from adhering back to the surface of the metal plate when the metal plate is cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A front view of a laser cutting device according to an embodiment of the present invention.

[0014] Figure 2 A schematic diagram of a laser cutting device, a negative pressure assembly, and an exhaust assembly according to an embodiment of the present invention.

[0015] Figure 3 A top view of a laser cutting device according to an embodiment of the present invention, wherein the laser cutting component is ignored.

[0016] Figure 4 yes Figure 3 A cross-sectional view of a laser cutting device along line segment AA.

[0017] Figure 5A yes Figure 4 A partial enlarged view of the laser cutting equipment.

[0018] Figure 5B A partial enlarged view of a support platform at a through hole according to another embodiment of the present invention.

[0019] Figure 6 A schematic diagram of a laser cutting device in operation according to an embodiment of the present invention.

[0020] Figure 7 A schematic diagram of a porous adsorbent disposed in a supporting platform according to another embodiment of the present invention.

[0021] Figure 8 A cross-sectional view of a laser cutting device according to another embodiment of the present invention.

[0022] Fig. 9 A cross-sectional view of a laser cutting device according to yet another embodiment of the present invention.

[0023] Fig.10 A flow chart of an operating method of a laser cutting device according to an embodiment of the present invention.

[0024] Explanation of symbols:

[0025] 100, 500, 600: Laser cutting equipment

[0026] 110: Loading platform

[0027] 112: First surface

[0028] 114: Second Surface

[0029] 120: Porous adsorption parts

[0030] 122: Upper surface

[0031] 130: Negative pressure channel

[0032] 140: First air extraction channel member

[0033] 142: First side wall

[0034] 144: Second side wall

[0035] 146: Third side wall

[0036] 150: Laser cutting parts

[0037] 160: Second air extraction channel member

[0038] 170: The third air extraction channel

[0039] 200: Sheet metal

[0040] 202: The third surface

[0041] 204: The fourth surface

[0042] 300: Negative pressure components

[0043] 400: Pumping assembly

[0044] A: First endpoint

[0045] AB: First segment

[0046] B: Second endpoint

[0047] BC: Second line segment

[0048] C: The third endpoint

[0049] CL: Center Line

[0050] D1: First direction

[0051] D2: Second direction

[0052] H: Through hole

[0053] L: Metal droplets

[0054] LC: Droplet Collection Trough

[0055] O1: Perforation

[0056] O2: fine pores

[0057] S1: Steps

[0058] S2: Steps

[0059] S3: Steps

[0060] S4: Steps

[0061] V: Negative pressure hole

[0062] AA: Line segment. DETAILED DESCRIPTION

[0063] Please refer to Figure 1 and Figure 2 , Figure 1 According to a front view of a laser cutting device 100 in one embodiment of the present invention, Figure 2 A schematic diagram of a laser cutting device 100, a negative pressure assembly 300, and an exhaust assembly 400 according to an embodiment of the present invention. Figure 1 and Figure 2 In the figure, the laser cutting device 100 includes a carrier 110, a porous adsorbent 120, a negative pressure channel 130 and a first air suction channel 140. The porous adsorbent 120 is located in the carrier 110, and the carrier 110 is flush with the porous adsorbent 120. When the workpiece is placed on the carrier 110, the porous adsorbent 120 can adsorb the workpiece to provide the workpiece with a stable effect on the carrier 110, which can reduce the displacement or shaking of the workpiece during processing. The negative pressure channel 130 can be connected to the negative pressure component 300. The first air suction channel 140 can be connected to the air suction component 400.

[0064] Please refer to Figure 3 , Figure 4 , Figure 5A , Figure 3 According to the top view of the laser cutting device 100 according to one embodiment of the present invention, the laser cutting element 150 (such as Figure 1 ), Figure 4 yes Figure 3 A cross-sectional view of the laser cutting device 100 along line segment AA, Figure 5A yes Figure 4 A partial enlarged view of the laser cutting device 100. Figure 3 , Figure 4 , Figure 5A In the embodiment, the carrier 110 has a first surface 112 and a second surface 114 opposite to the first surface 112. The carrier 110 has a through hole H and a negative pressure hole V penetrating the first surface 112 and the second surface 114. For example, in this embodiment, the number of the negative pressure holes V is two, and the through hole H is located between the two negative pressure holes V, but the number of the negative pressure holes V and the through hole H is not limited thereto.

[0065] In some embodiments, the two negative pressure holes V of the carrier platform 110 are adjacent to the through hole H of the carrier platform 110. The porous adsorbent 120 is disposed in the negative pressure hole V of the carrier platform 110 and has a plurality of through holes O1. The through holes O1 of the porous adsorbent 120 are connected to the negative pressure hole V. The negative pressure channel member 130 is connected to the second surface 114 of the carrier platform 110. The negative pressure channel member 130 itself has a negative pressure channel connected to the negative pressure hole V. The negative pressure assembly 300 connected to the negative pressure channel member 130 is used to extract the air in the negative pressure channel of the negative pressure channel member 130 and the negative pressure hole V.

[0066] In some embodiments, the first suction channel member 140 is connected to the second surface 114 of the carrier 110. The first suction channel member 140 has a first suction channel connected to the through hole H. The suction assembly 400 (such as Figure 2 The porous adsorbent 120 is used to extract the air in the first air extraction channel of the first air extraction channel member 140. In addition, the upper surface 122 of the porous adsorbent 120 is flush with the first surface 112 of the carrier 110. In other words, the upper surface 122 of the porous adsorbent 120 is coplanar with the first surface 112 of the carrier 110. In addition, the through hole H of the carrier 110 is aligned with the center line CL of the first air extraction channel member 140, and the through hole H of the carrier 110 is located between the two negative pressure holes V of the carrier 110.

[0067] Please refer to Figure 5B , Figure 5B A partial enlarged view of the support platform 110 at the through hole H according to another embodiment of the present invention. Figure 5B middle, Figure 5B The supporting platform 110 shown in FIG. Figure 5A The difference between the support platform 110 shown is that the support platform 110 has a first surface 112 and a second surface 114 opposite to the first surface 112, the support platform 110 has a first endpoint A at the through hole H of the first surface 112, the support platform 110 has a third endpoint C at the through hole H of the second surface 114, and the support platform 110 has a second endpoint B on the inner surface of the through hole H, wherein the first endpoint A, the second endpoint B and the third endpoint C are not on the same straight line. The distance between the first endpoint A and the second endpoint B of the support platform 110 is the first line segment AB. The distance between the second endpoint B and the third endpoint C of the support platform 110 is the second line segment BC. Therefore, at Figure 5B In the embodiment of the present invention, the first line segment AB is perpendicular to the first surface 112, and the second line segment BC is not perpendicular to the first surface 112 and / or the second line segment BC is not perpendicular to the second surface 114. It is worth noting that the ratio of the first line segment AB to the second line segment BC is less than 1. Preferably, the ratio of the first line segment AB to the second line segment BC is less than 0.5. More preferably, the ratio of the first line segment AB to the second line segment BC is less than 0.25.

[0068] At Figure 5B In the embodiment, the through hole cross-sectional area of ​​the through hole H on the first surface 112 is smaller than the through hole cross-sectional area of ​​the through hole H on the second surface 114, or the diameter of the through hole H on the first surface 112 is smaller than the diameter of the through hole H on the second surface 114; therefore, preferably, the opening size of the through hole H expands from the first surface 112 of the carrier 110 to the second surface 114; more preferably, the opening size of the through hole H expands continuously from the first surface 112 of the carrier 110 to the second surface 114. In other words, the expansion in the above text means that at least a portion of the through hole H, such as the second line segment BC, has a through hole cross-sectional area that increases as the through hole H extends toward the second surface 114, or the through hole cross-sectional area increases continuously as the through hole H extends toward the second surface 114. As for the first line segment AB, the through hole cross-sectional area can be optionally maintained the same from the first surface 112 to the second surface 114.

[0069] In addition, Figure 5B In the embodiment, the distance between the first surface 112 and the second surface 114 of the carrier 110 forms a carrier thickness, and the quotient obtained by dividing the first line segment AB by the carrier thickness is less than 1. Preferably, the quotient obtained by dividing the first line segment AB by the carrier thickness is less than 0.5. More preferably, the quotient obtained by dividing the first line segment AB by the carrier thickness is less than 0.25. It is particularly noted that, with respect to the design of the through hole H, Figure 5B and Figure 5A Compared with the embodiment of Figure 5B The embodiment can increase the fluid velocity at the through hole H, so that the metal droplet L can drop faster and better along the first direction D1 to the bottom of the first suction channel member 140. Figure 5B In the embodiment, the first direction D1 is perpendicular to the first surface 112 , or the first direction D1 is an extending direction of the through hole H.

[0070] Please refer to Figure 6 , Figure 6 A schematic diagram of a laser cutting device 100 in operation according to an embodiment of the present invention. Figure 4 , Figure 5A , Figure 5B , Figure 6In the laser cutting device 100, a laser cutting component 150 is further included. The laser cutting component 150 is disposed above the carrier 110. The laser cutting component 150 can transmit a laser beam to the third surface 202 of the metal plate 200 away from the first exhaust channel component 140. The metal plate 200 is adsorbed onto the porous adsorption component 120. The laser cutting component 150 can be used to cut the metal plate 200. Metal droplets L are generated when the metal plate 200 is cut. When the laser cutting component 150 cuts the metal plate 200, the laser cutting component 150 is aligned with the through hole H in the first direction D1.

[0071] In some embodiments, the first surface 112 of the carrier 110 and the upper surface 122 of the porous adsorbent 120 directly contact the fourth surface 204 of the metal plate 200 relative to the third surface 202. In addition, the laser cutting device 100 further includes a second air extraction channel member 160. The second air extraction channel member 160 is disposed on a first side of the first air extraction channel member 140, for example, the second air extraction channel member 160 is disposed on the left side of the first air extraction channel member 140. The second air extraction channel member 160 is formed with a second air extraction channel connected to the first air extraction channel. The second air extraction channel member 160 extends along a second direction D2, and the second direction D2 is perpendicular to the first direction D1.

[0072] In detail, the laser cutting member 150 transmits a laser beam to the third surface 202 of the metal plate 200. The heated portion of the metal plate 200 will melt from a solid state into a liquid metal droplet L. The exhaust assembly 400 connected to the first exhaust channel member 140 can exhaust the air in the first exhaust channel of the first exhaust channel member 140, so that the metal droplet L can drip from the through hole H along the first direction D1 to the droplet collection groove LC below the first exhaust channel member 140. The droplet collection groove LC is located at one end of the first exhaust channel member 140 away from the through hole H. The droplet collection groove LC can collect the metal droplets L dripping from the through hole H along the first direction D1.

[0073] Specifically, the negative pressure channel member 130 of the laser cutting device 100 has a negative pressure channel connected to the negative pressure hole V, and the first air extraction channel member 140 has a first air extraction channel connected to the through hole H. The air extraction component 400 can extract the air in the first air extraction channel of the first air extraction channel member 140, so that the first air extraction channel has a suction force along the first direction D1, so that the metal droplets L melted by the heated portion of the metal plate 200 changing from solid to liquid can drip along the first direction D1 in the through hole H to the first air extraction channel. In other words, the suction force of the first air extraction channel along the first direction D1 can prevent the melted metal droplets L from adhering back to the cutting edge of the metal plate 200, thereby improving the quality of the metal plate 200 after being cut by the laser cutting member 150.

[0074] Please refer to Figure 7 , Figure 7 A schematic diagram of a porous adsorption member 120 disposed in a supporting platform 110 according to another embodiment of the present invention. Figure 7 and Figure 5A The embodiment shown is different in that the porous adsorption member 120 can be a porous ceramic plate, and the porous adsorption member 120 itself has a plurality of tiny pores O2 . The pores O2 can help the metal plate 200 to be fixed on the carrier 110 .

[0075] Please refer to Figure 8 , Figure 8 A cross-sectional view of a laser cutting device 500 according to yet another embodiment of the present invention. Figure 8 The laser cutting device 500 shown in FIG. Figure 4 The laser cutting device 100 shown is different in that the laser cutting device 500 further includes a third air extraction channel member 170. The third air extraction channel member 170 is disposed on a second side of the first air extraction channel member 140 relative to the first side, for example, the third air extraction channel member 170 is disposed on the right side of the first air extraction channel member 140, and the second air extraction channel member 160 is disposed on the left side of the first air extraction channel member 140.

[0076] In addition, the third air extraction channel member 170 is formed with a third air extraction channel connected to the first air extraction channel, the third air extraction channel member extends in the opposite direction of the second direction D2, and the third air extraction channel member 170 is aligned with the second air extraction channel member 160 in the second direction D2. The first air extraction channel member 140 has a first side wall 142, a second side wall 144 and a third side wall 146, the first side wall 142 of the first air extraction channel member 140 and the third side wall 146 of the first air extraction channel member 140 are parallel to the first direction D1, the second side wall 144 of the first air extraction channel member 140 is parallel to the second direction D2, and the first side wall 142, the second side wall 144 and the third side wall 146 of the first air extraction channel member 140 are in a stepped structure.

[0077] Please refer to Fig. 9 , Fig. 9 A cross-sectional view of a laser cutting device 600 according to yet another embodiment of the present invention. Fig. 9 The laser cutting device 600 shown in FIG. Figure 8 The laser cutting device 500 shown in the figure is different in that the first air suction channel member 140 has a first side wall 142, a second side wall 144 and a third side wall 146, and the third side wall 146 of the first air suction channel member 140 is inclined in a direction away from the first side wall 142 of the first air suction channel member 140 and the second side wall 144 of the first air suction channel member 140. In other words, the first air suction channel member 140 gradually expands in the direction of the second air suction channel member 160 and the third air suction channel member 170.

[0078] In the following description, the operation method of the laser cutting equipment will be explained. The component connections, materials and functions that have been described will not be repeated, but will be described first.

[0079] Please refer to Fig.10 , Fig.10 A flow chart of an operating method of a laser cutting device according to an embodiment of the utility model. The operating method of the laser cutting device includes the following steps. First, in step S1, a metal sheet is placed on the first surface of a carrier, wherein the carrier has a through hole penetrating the first surface and the second surface and a negative pressure hole adjacent to the through hole. Then, in step S2, a negative pressure channel connected to the negative pressure hole is formed by a negative pressure channel member connected to the second surface of the carrier, and a porous adsorbent member is arranged in the carrier to adsorb the metal sheet, wherein the porous adsorbent member has a plurality of through holes, and the plurality of through holes are connected to the negative pressure holes, the negative pressure channel member is used to connect the negative pressure component, and the negative pressure component is used to extract the air in the negative pressure channel and the negative pressure hole of the negative pressure channel member. Then, in step S3, the metal sheet is cut so that metal droplets are generated when the metal sheet is cut. Next, in step S4, a first exhaust channel having a communicating through hole is formed by a first exhaust channel member connected to the second surface of the carrier, so that the metal droplets drip along a first direction in the first exhaust channel, wherein the first exhaust channel member is further used to connect an exhaust component, and the exhaust component is used to exhaust the air in the first exhaust channel of the first exhaust channel member. The above steps will be described in detail below.

[0080] At Figure 4 , Figure 5A , Figure 5B , Figure 6 In the embodiment, the metal plate 200 can be placed on the first surface 112 of the carrier 110, and the carrier 110 has a through hole H penetrating the first surface 112 and the second surface 114 and a negative pressure hole V adjacent to the through hole H. Then, a negative pressure channel connected to the negative pressure hole V can be formed by the negative pressure channel member 130 connected to the second surface 114 of the carrier 110, and the porous adsorbent 120 disposed in the carrier 110 adsorbs the metal plate 200. The negative pressure assembly 300 is used to extract the air in the negative pressure channel of the negative pressure channel member 130 and the negative pressure hole V.

[0081] Next, the laser cutting member 150 may emit a laser beam to the third surface 202 of the metal plate 200 away from the first exhaust channel member 140, so that metal droplets L are generated when the metal plate 200 is cut. When the laser cutting member 150 cuts the metal plate 200, the laser cutting member 150 is aligned with the through hole H in the first direction D1. Next, the first exhaust channel member 140 connected to the second surface 114 of the carrier 110 may be formed with a first exhaust channel connected to the through hole H, so that the metal droplets L may drip from the through hole H along the first direction D1 into the first exhaust channel. The suction force of the first exhaust channel along the first direction D1 may prevent the melted metal droplets L from adhering back to the cutting edge of the metal plate 200, thereby improving the quality of the metal plate 200 after being cut by the laser cutting member 150.

Claims

1. A laser cutting device for cutting a metal plate (200), characterized in that: When the metal plate (200) is cut, a metal droplet (L) is generated, and the laser cutting device comprises: A supporting platform (110) having a first surface (112) and a second surface (114) opposite to the first surface (112), and having a through hole (H) penetrating the first surface (112) and the second surface (114) and a negative pressure hole (V) adjacent to the through hole (H); A porous adsorption member (120) is disposed in the negative pressure hole (V) of the support platform (110) and has a plurality of through holes (O1), wherein the plurality of through holes (O1) are connected to the negative pressure hole (V); a negative pressure channel member (130) connected to the second surface (114) of the support platform (110) and formed with a negative pressure channel connected to the negative pressure hole (V), wherein the negative pressure channel member (130) is used to connect to a negative pressure component (300), and the negative pressure component (300) is used to extract air from the negative pressure channel of the negative pressure channel member (130) and the negative pressure hole (V), so that the metal plate (200) is adsorbed onto the porous adsorption member (120); as well as A first air extraction channel member (140) is connected to the second surface (114) of the support platform (110), and is provided with a first air extraction channel connected to the through hole (H), wherein the first air extraction channel member (140) is further used to connect to an air extraction component (400), and the air extraction component (400) is used to extract the air in the first air extraction channel of the first air extraction channel member (140), so that the metal droplet (L) drips along a first direction (D1).

2. The laser cutting device according to claim 1, characterized in that: A laser cutting component (150) is disposed above the supporting platform (110) and is used to transmit a laser beam to a third surface (202) of the metal plate (200) away from the first exhaust channel component (140), wherein the laser cutting component (150) is aligned with the through hole (H) in the first direction (D1) when cutting the metal plate (200), wherein an upper surface (122) of the porous adsorption component (120) is flush with the first surface (112) of the supporting platform (110), and the first surface (112) of the supporting platform (110) and the upper surface (122) of the porous adsorption component (120) directly contact a fourth surface (204) of the metal plate (200) relative to the third surface (202).

3. The laser cutting device according to claim 1, characterized in that: The first air extraction channel member (140) has a droplet collection groove (LC) at one end away from the through hole (H), and the droplet collection groove (LC) is used to collect the metal droplets (L) dripping along the first direction (D1), and the through hole (H) of the supporting platform (110) is aligned with the center line (CL) of the first air extraction channel member (140).

4. The laser cutting device according to claim 1, wherein: a second air extraction channel member (160) disposed on a first side of the first air extraction channel member (140) and forming a second air extraction channel connected to the first air extraction channel, wherein the second air extraction channel member (160) extends along a second direction (D2), the second direction (D2) being perpendicular to the first direction (D1); and A third air suction channel member (170) is disposed on a second side of the first air suction channel member (140) relative to the first side, and forms a third air suction channel connected to the first air suction channel, wherein the third air suction channel member (170) extends in the opposite direction of the second direction (D2), and the third air suction channel member (170) is aligned with the second air suction channel member (160) in the second direction (D2).

5. The laser cutting device according to claim 4, characterized in that: The first exhaust channel member (140) has a first side wall (142), a second side wall (144) and a third side wall (146); the first side wall (142) and the third side wall (146) are parallel to the first direction (D1), the second side wall (144) is parallel to the second direction (D2), and the first side wall (142), the second side wall (144) and the third side wall (146) are in a stepped structure.

6. The laser cutting device according to claim 1, wherein: The first air extraction channel member (140) has a first side wall (142), a second side wall (144) and a third side wall (146); the third side wall (146) is inclined in a direction away from the first side wall (142) and the second side wall (144).

7. The laser cutting device according to claim 1, characterized in that: The carrier platform (110) has a first endpoint (A) at the through hole (H) of the first surface (112), the carrier platform (110) has a second endpoint (B) at the through hole (H) of an inner surface between the first surface (112) and the second surface (114), the carrier platform (110) has a third endpoint (C) at the through hole (H) of the second surface (114), and the first endpoint (A), the second endpoint (B) and the third endpoint (C) are not on the same straight line, the distance between the first endpoint (A) and the second endpoint (B) of the carrier platform (110) is a first line segment (AB), the distance between the second endpoint (B) and the third endpoint (C) of the carrier platform (110) is a second line segment (BC), and the ratio of the first line segment (AB) to the second line segment (BC) of the carrier platform (110) is less than 1.

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