Laser processing equipment

Abstract

The utility model discloses a laser processing equipment relates to laser processing technical field, this laser processing equipment includes shell and light blocking piece, the side wall of shell is equipped with the air outlet, the light blocking piece is provided in the shell and is opposite to the air outlet, thereby can effectively prevent the laser from leaking from the air outlet, and the light blocking piece is equipped with the air outlet. And the exhaust process of the laser processing equipment is not influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser processing technical field, especially a kind of laser processing equipment. BACKGROUND

[0002] Household laser processing equipment allows user to carry out laser engraving and cutting to various materials at home, and it is a kind of more and more popular DIY tool. The shell of laser processing equipment is formed with working cavity, and laser head emits laser in working cavity and moves according to preset trajectory, so as to complete laser engraving or cutting process.

[0003] The process of related technology laser engraving can produce waste gas, in order to remove waste gas in working cavity in time, laser processing equipment is also equipped with air extraction system, and air extraction system mainly utilizes rotation of fan to extract waste gas in working cavity, but laser in laser processing process is easy to leak from fan air outlet. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a kind of laser processing equipment, to solve the problem that laser in laser processing equipment is easy to leak from air outlet.

[0005] To achieve the above-mentioned purpose, the laser processing equipment provided by the utility model includes shell and light barrier, the side wall of the shell is provided with air outlet, and the light barrier is arranged in the shell and is arranged opposite to the air outlet.

[0006] In an embodiment, the laser processing equipment further includes fan assembly, the fan assembly is arranged between the light barrier and the air outlet, and the light barrier is connected to the fan assembly.

[0007] In an embodiment, the light barrier includes light barrier plate and leg bent with the light barrier plate, the leg is protruded on the side of the light barrier plate towards the fan assembly and connected with the fan assembly.

[0008] In an embodiment, the leg includes first leg, and each first leg is clamped on one corner of the fan assembly.

[0009] In an embodiment, four first legs and the light barrier plate enclose a containing space, and the fan assembly is contained in the containing space, and each first leg is clamped on the side wall of the fan assembly.

[0010] In an embodiment, the light blocking plate has two first side edges arranged oppositely, the first leg includes a first bent portion and a second bent portion, the first bent portion is arranged in a bent manner with the first side edge and protrudes towards a side where the fan assembly is located; on the same first side edge, a side of the first bent portion away from the other first bent portion protrudes towards the fan assembly with the second bent portion, and the second bent portion is clamped on a side wall of the fan assembly.

[0011] In an embodiment, the fan assembly includes a shroud and a blade arranged in the shroud, the light blocking plate is arranged in a spaced manner with the shroud, the shroud has two first side surfaces arranged oppositely and two second side surfaces arranged oppositely, the shroud is accommodated in the accommodation space, the first side surface is arranged to face the first bent portion, the second side surface is arranged to face the second bent portion, a clamping step is formed at a connection between the first side surface and the second side surface, and the second bent portion is clamped on the clamping step.

[0012] In an embodiment, a surface of the clamping step is concavely arranged with a clamping groove, a side of the second bent portion facing the clamping groove is protrudingly arranged with a clamping block, and the clamping block is clamped in the clamping groove.

[0013] In an embodiment, the light blocking plate has two second side edges arranged oppositely, the second side edges are clamped between the two first side edges; the leg further includes a second leg, the second leg includes a third bent portion and a fourth bent portion, the third bent portion is arranged in a bent manner with the second side edge and protrudes towards a side of the fan assembly, the fourth bent portion is arranged at a free end of the third bent portion and arranged in a bent manner towards the shroud; a surface of the clamping step is protrudingly arranged with a blocking plate, and the fourth bent portion is engaged on a side surface of the blocking plate away from the light blocking plate.

[0014] In an embodiment, the leg further includes a third leg, the third leg is arranged in a bent manner with the light blocking plate and protrudes towards a side of the fan assembly, and a clamping hole for a wire harness is arranged on the third leg.

[0015] In an embodiment, a covering area of the light blocking plate is not less than an area of the air outlet; and / or, a material of the light blocking plate is a metal material; and / or, the light blocking plate is an integrally formed structure.

[0016] In an embodiment, the shell comprises a shell body and a partition plate, the partition plate is arranged in the shell body to divide a cavity in the shell body into a front cavity and a rear cavity, an exhaust opening is arranged on the partition plate to communicate the front cavity and the rear cavity, the air outlet is arranged on a side wall of the rear cavity and is arranged opposite to the exhaust opening, and the light blocking sheet is arranged in the rear cavity and between the air outlet and the exhaust opening.

[0017] In an embodiment, the laser processing device further comprises a laser head, the laser head is movably arranged in the front cavity, the laser processing device further comprises a track mechanism, the track mechanism comprises a first track and a second track, the first track is arranged on opposite sides of the front cavity along a first direction, the second track is movably arranged on the two first tracks along a second direction, and the laser head is movably arranged on the second track.

[0018] The laser processing device is provided with the light blocking sheet, the light blocking sheet is arranged in the shell and arranged opposite to the air outlet, so that the laser can be effectively blocked from leaking out of the air outlet, and the exhaust process of the laser processing device is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0020] Figure 1 The structure schematic diagram of the laser processing device provided by the present application is shown in an embodiment.

[0021] Figure 2 The assembly schematic diagram of the laser head and the track mechanism of the laser processing device provided by the present application is shown in an embodiment.

[0022] Figure 3 The partial structure schematic diagram of the laser processing device provided by the present application is shown in an embodiment.

[0023] Figure 4 The partial structure exploded view of the laser processing device provided by the present application is shown in an embodiment.

[0024] Figure 5 The exploded view of the light blocking sheet and the fan assembly in the laser processing device provided by the present application is shown in an embodiment.

[0025] Figure 6The utility model provides a structure schematic drawing of the light barrier in the laser processing equipment one embodiment provided by the utility model.

[0026] Figure 7 For Figure 6 Structure schematic drawing of another view.

[0027] Figure 8 Structure schematic drawing of the light barrier and fan assembly after assembly in the laser processing equipment one embodiment provided by the utility model.

[0028] Explanation of reference numerals:

[0029] 100, laser processing equipment, 1, shell, 10, shell body, 11, partition, 110, air outlet, 111, exhaust port, 12, front chamber, 13, rear chamber, 14, top plate, 15, cover plate, 2, light barrier, 21, light barrier plate, 211, first side edge, 212, second side edge, 22, foot, 221, first foot, 2211, first bending part, 2212, second bending part, 222, second foot, 2221, third bending part, 2222, fourth bending part, 2223, clamping block, 223, third foot, 2231, wire clamping hole, 3, fan assembly, 31, shroud, 311, first side, 312, second side, 313, clamping step, 314, clamping groove, 315, baffle, 32, blade, 4, laser head, 5, track mechanism, 51, first track, 52, second track.

[0030] The realization, functional characteristics and advantages of the utility model will be further described with reference to the drawings in combination with the embodiments. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0032] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, if the certain posture changes, the directional indications also change accordingly.

[0033] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0034] The utility model provides a kind of laser processing equipment 100, the laser processing equipment 100 can be but not limited to laser engraving machine, laser cutting machine and laser marking machine and the equipment for processing using laser.

[0035] Please refer to Figure 1 、 Figure 3 And Figure 4 , the laser processing equipment 100 includes shell 1 and light barrier 2, the side wall of shell 1 is provided with air outlet 110, light barrier 2 is arranged in shell 1 and is oppositely arranged with air outlet 110.

[0036] The shell 1 of the laser processing equipment 100 is formed with working cavity, laser head 4 is arranged in working cavity, laser head 4 is used to emit laser to carry out laser processing to workpiece, laser head 4 is movably arranged in working cavity, so that laser head 4 can be translated in working cavity, so as to be moved to different positions for processing. Among them, laser head 4 can be slidably connected with the top wall of working cavity;Or, track mechanism 5 can be arranged in working cavity, laser head 4 is slidably arranged on track mechanism 5, track mechanism 5 can be transmission mode using pulley (i.e. the combination including pulley and belt), of course, it can also be transmission mode using sprocket (i.e. the combination including sprocket and chain), the transmission mode of track mechanism 5 is not limited in the present application, laser head 4 can be moved. In addition, the track mechanism 5 can drive laser head 4 to slide in horizontal direction, of course, it can also be further driven to slide in vertical direction, the present application does not make limitation to this.

[0037] The process of laser processing can produce exhaust gas, in order to discharge the exhaust gas in the working cavity in time, the side wall of the shell 1 is provided with an air outlet 110, the air outlet 110 is provided with a fan assembly 3, the fan assembly 3 comprises a shroud 31 and a blade 32 arranged in the shroud 31, and then the exhaust gas in the working cavity is removed by the rotation of the blade 32. It can be understood that the laser of laser engraving is strong light, if the laser leaks from the air outlet 110, not only the eyes of the operator will be stimulated, but also the laser irradiation to the surface of the fan assembly 3 or other electronic devices will form heat radiation, and burn the fan assembly 3 or other electronic devices. In order to avoid the laser from leaking from the air outlet 110 during the laser processing process, the laser processing equipment 100 is also provided with a light shielding sheet 2, the light shielding sheet 2 is arranged in the shell 1 and is arranged opposite to the air outlet 110, so that the laser can be effectively blocked from leaking from the air outlet 110, and the exhaust process of the laser processing equipment 100 is not affected.

[0038] The material of the light shielding sheet 2 is metal, such as stainless steel, iron and aluminum, the metal light shielding sheet 2 has good light shielding performance and structural strength, and is easy to be stamped into a shape, that is, the light shielding sheet 2 is an integral structure, so that the light shielding sheet 2 has good integrity and structural strength.

[0039] It can be understood that the shroud 31 in the fan assembly 3 can also have a certain light shielding effect, at this time, the covering area of the light shielding sheet 2 can be equal to the covering area of the blade 32. In order to guarantee the light shielding performance of the light shielding sheet 2 and ensure that the light shielding sheet 2 can effectively shield light no matter what size of the blade 32 is installed, the covering area of the light shielding sheet 2 is not less than the area of the air outlet 110, that is, the size of the light shielding sheet 2 is just the same as the size of the air outlet 110, or the size of the light shielding sheet 2 is greater than the size of the air outlet 110, so that the air outlet 110 can be completely shielded, and the universality and reliability of the light shielding sheet 2 are improved.

[0040] In actual application process, the fan assembly 3 can be arranged in the shell 1 and arranged opposite to the air outlet 110, or the fan assembly 3 can be arranged outside the shell 1 and arranged opposite to the air outlet 110, or the fan assembly 3 can be arranged at the air outlet 110, which is not limited here. The shroud 31 can be fixedly connected with the shell 1 by screws, or the shroud 31 can be fixedly connected with the shell 1 by a buckle structure.

[0041] In some embodiments of the utility model, the fan assembly 3 is arranged between the light shielding sheet 2 and the air outlet 110, and the light shielding sheet 2 is fixed to the fan assembly 3. That is, the light shielding sheet 2 and the fan assembly 3 are connected as a whole, so that the installation and fixation of the light shielding sheet 2 are realized. The connection mode of the light shielding sheet 2 and the fan assembly 3 is detachable connection, such as screw connection or buckle connection, so that the light shielding sheet 2 and the fan assembly 3 can be separated conveniently, and the cleaning or replacement of the light shielding sheet 2 or the fan assembly 3 is facilitated.

[0042] Reference Figures 5 to 8 In some embodiments of the present application, the light blocking sheet 2 comprises a light blocking plate 21 and a supporting leg 22 bent with the light blocking plate 21, the supporting leg 22 is protruded on the side of the light blocking plate 21 facing the fan assembly 3 and connected with the fan assembly 3.

[0043] In the present embodiment, the light blocking plate 21 is spaced apart from the shroud 31 in the fan assembly 3, the edge of the light blocking plate 21 is bent to provide the supporting leg 22, the supporting leg 22 is protruded on the side facing the fan assembly 3, the supporting leg 22 is connected with the shroud 31 of the fan assembly 3 to realize the connection of the light blocking sheet 2 and the fan assembly 3. Among them, the light blocking plate 21 is bent to provide the supporting leg 22 at least on the opposite side edges, preferably, the supporting leg 22 is bent to provide on the four edges of the light blocking plate 21, thereby ensuring the stability of the connection of the light blocking sheet 2 and the fan assembly 3. In the present embodiment, the light blocking plate 21 is used for light blocking, and the supporting leg 22 is used for connecting with the fan assembly 3, which not only ensures the light blocking performance of the light blocking sheet 2, but also realizes the connection of the light blocking sheet 2, and at the same time enables the exhaust gas in the working cavity to bypass the light blocking plate 21 and the supporting leg 22 and be discharged from the air outlet 110.

[0044] In some embodiments, the supporting leg 22 comprises a first supporting leg 221, and each of the four corners of the light blocking plate 21 is provided with a first supporting leg 221, and each of the first supporting legs 221 is clamped on one corner of the fan assembly 3.

[0045] In the present embodiment, the light blocking plate 21 is a square plate, and each of the four corners of the light blocking plate 21 is provided with a first supporting leg 221 clamped on the fan assembly 3, thereby ensuring the stability of the connection between the light blocking plate 21 and the fan assembly 3, and avoiding the problem of movement or shaking of the light blocking plate 21 caused by vibration or wind force change of the fan assembly 3.

[0046] Among them, the four first supporting legs 221 and the light blocking plate 21 form a receiving space, and the fan assembly 3 is received in the receiving space, and each of the first supporting legs 221 is clamped on the side wall of the fan assembly 3, thereby realizing the connection of the first supporting leg 221 and the fan assembly 3.

[0047] Specifically, the light blocking plate 21 has two first side edges 211 and two second side edges 212, and the second side edges 212 are clamped between the two first side edges 211. The first supporting leg 221 comprises a first bending part 2211 and a second bending part 2212, the first bending part 2211 is bent with the first side edge 211 and protrudes on the side facing the fan assembly 3. On the same first side edge 211, the side of a first bending part 2211 away from another first bending part 2211 is provided with a second bending part 2212 protruding towards the fan assembly 3, and the second bending part 2212 is clamped on the side wall of the fan assembly 3.

[0048] In the embodiment, the four first legs 221 enclose a square receiving space, the shroud 31 in the fan assembly 3 has two oppositely arranged first side surfaces 311 and two oppositely arranged second side surfaces 312, the shroud 31 is received in the receiving space, the first side surface 311 is arranged to face the first bent portion 2211, and the second side surface 312 is arranged to face the second bent portion 2212. The first bent portion 2211 is used to block vibration of the fan assembly 3 in a direction perpendicular to the first side surface 311, and the second bent portion 2212 is used to block vibration of the fan assembly 3 in a direction perpendicular to the second side surface 312, so that the fan assembly 3 can be stabilized in two directions, and the stability of the fan assembly 3 and the light shielding sheet 2 as a whole is enhanced.

[0049] The second bent portion 2212 is connected with the side wall of the shroud 31, specifically, a clamping step 313 is formed at the connection position of the first side surface 311 and the second side surface 312, and the second bent portion 2212 is clamped in the clamping step 313. The clamping step 313 provides a clear mounting position for the installation of the second bent portion 2212, so that the second bent portion 2212 can be installed in the expected position each time, and the assembly efficiency of the light shielding sheet 2 and the shroud 31 is improved.

[0050] Referring to Figure 5 and Figure 7 , a clamping groove 314 is concavely arranged on the surface of the clamping step 313, and a clamping block 2223 is protrudingly arranged on the side of the second bent portion 2212 facing the clamping groove 314, and the clamping block 2223 is clamped in the clamping groove 314, so that the second bent portion 2212 is clamped with the shroud 31.

[0051] Please refer to Figures 5 to 7 In some embodiments of the utility model, the leg 22 further comprises a second leg 222, the second leg 222 comprises a third bent portion 2221 and a fourth bent portion 2222, the third bent portion 2221 is arranged to be bent with the second side edge 212 of the light shielding plate 21 and protrudes towards the side of the fan assembly 3, and the fourth bent portion 2222 is arranged at the free end of the third bent portion 2221 and is arranged to be bent towards the shroud 31. The surface of the clamping step 313 is protrudingly arranged with a baffle 315, and the fourth bent portion 2222 is buckled on the side surface of the baffle 315 away from the light shielding plate 21. The arrangement of the second leg 222 provides an additional connection point between the light shielding plate 21 and the shroud 31, further improving the stability of the connection between the light shielding plate 21 and the shroud 31.

[0052] In some embodiments of the utility model, the leg 22 further comprises a third leg 223, the third leg 223 is arranged to be bent with the light shielding plate 21 and protrudes towards the side of the fan assembly 3, and the third leg 223 is provided with a clamping hole 2231 for the wire harness to pass through.

[0053] It should be noted that the laser processing equipment 100 further comprises a main control board and a power module, the laser head 4 and the power module are connected with the main control board through wire harnesses respectively, if the wire harnesses are randomly scattered and the wiring is messy, the maintenance personnel cannot quickly distinguish the wire harnesses when performing maintenance. In order to avoid this problem, the supporting leg 22 in the embodiment further comprises a third supporting leg 223, the third supporting leg 223 is arranged to be bent with the light shield plate 21 and protrudes towards the side of the fan assembly 3, a wire clamping hole 2231 is arranged on the third supporting leg 223 for the wire harness to pass through, which helps to keep the wire harness neat and orderly, and avoids the problem that the efficiency is affected due to the mess of the wire harness during maintenance. In the embodiment, the light shield plate 2 not only plays a role of preventing laser leakage, but also plays a role of guiding the wire harness, and the utilization rate of the light shield plate 2 is improved.

[0054] With reference to Figure 1 and Figure 3 In some embodiments of the utility model, the shell 1 includes shell body 10 and baffle 11, baffle 11 is arranged in shell body 10 to divide the chamber in shell body 10 into front chamber 12 and rear chamber 13, exhaust port 111 is opened on baffle 11 to communicate front chamber 12 and rear chamber 13, air outlet 110 is opened in the side wall of rear chamber 13 and is arranged opposite exhaust port 111, light shield plate 2 is arranged in rear chamber 13 and is located between air outlet 110 and exhaust port 111.

[0055] In the embodiment, the shell 1 includes shell body 10 and baffle 11, baffle 11 is arranged in shell body 10 to divide the chamber in shell body 10 into front chamber 12 and rear chamber 13, the volume of front chamber 12 is greater than the volume of rear chamber 13, laser head 4 is movably arranged in front chamber 12, light shield plate 2 and fan assembly 3 are arranged in rear chamber 13, thereby reasonably partitioning the space in shell 1, i.e. front chamber 12 is the laser processing area, rear chamber 13 is the installation area of light shield plate 2 and fan assembly 3, laser head 4 moves in front chamber 12 and does not affect light shield plate 2 and fan assembly 3 in rear chamber 13, reducing the mutual interference between components. In addition, separating the laser processing area and the installation area of light shield plate 2 and fan assembly 3 makes the internal layout of the equipment more orderly, facilitating management and maintenance.

[0056] To facilitate the discharge of exhaust gas from the front chamber 12, an exhaust port 111 is provided on the partition 11 to connect the front chamber 12 and the rear chamber 13. An air outlet 110 is located on the side wall of the rear chamber 13 and is positioned opposite to the exhaust port 111. A light-blocking plate 2 is disposed within the rear chamber 13 and located between the air outlet 110 and the exhaust port 111. Thus, the exhaust gas in the front chamber 12, under the suction of the fan assembly 3, passes through the exhaust port 111 into the rear chamber 13, and is then discharged outwards from the air outlet 110. The beneficial effects of the light-blocking plate 2 in this embodiment are specifically described in the above embodiment and will not be repeated here.

[0057] The anterior chamber 12 is equipped with a track mechanism 5, as shown in the reference. Figure 2 The track mechanism 5 includes a first track 51 and a second track 52. Two first tracks 51 are provided, positioned along a first direction on opposite sides of the front chamber 12. The second track 52 is reciprocally mounted on the two first tracks 51 along a second direction. The laser head 4 is movably mounted on the second track 52. The first and second directions are perpendicular to each other. This configuration allows the laser head 4 to slide along the extension direction of the second track 52, or along the extension direction of the first track 51, enabling it to move to different positions for processing.

[0058] Reference Figure 1 and Figure 3 The outer casing 1 also includes a top plate 14, which is detachably mounted on the top of the rear chamber 13. The top plate 14 is used to seal the rear chamber 13, thereby protecting the fan assembly 3 and the light-blocking plate 2 inside the rear chamber 13. The top plate 14 is detachably connected to the outer casing body 10, thereby facilitating the assembly and maintenance of the fan assembly 3 and the light-blocking plate 2.

[0059] The top of the front chamber 12 is formed with a taking and placing opening, and the shell 1 further comprises a cover plate 15 for opening or covering the taking and placing opening. The cover plate 15 can be connected with the shell body 10 or the top plate 14. For example, the cover plate 15 can be rotatably connected with the shell body 10 or the top plate 14, so as to open and cover the taking and placing opening by rotating the cover plate 15. Alternatively, the cover plate 15 can be slidably connected with the shell body 10, so as to open and cover the taking and placing opening by sliding the cover plate 15. Of course, the cover plate 15 and the shell body 10 can not be connected, i.e., the two are separately arranged. When it is needed to cover the taking and placing opening, the cover plate 15 is directly placed on the shell body 10. When it is needed to open the taking and placing opening, the cover plate 15 is directly taken away. Therefore, the connection between the cover plate 15 and the shell body 10 is not limited, and the taking and placing opening can be opened and covered, so as to facilitate the operator to put the workpiece into the front chamber 12 or take out the workpiece processed from the front chamber 12. During the laser processing, the cover plate 15 is in the covered state, so as to avoid the laser overflow, the smoke and dust generated during the laser processing from spreading outward, and foreign matters from entering the front chamber 12 to affect the processing.

[0060] The above description is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation or direct / indirect application in other related technical fields based on the technical concept of the present application and the content of the present application are included in the patent protection scope of the present application.

Claims

1. A laser processing apparatus characterized by comprising: The laser processing device comprises: a housing, a working cavity is formed in the housing, a side wall of the housing is provided with an air outlet; a light shielding sheet, the light shielding sheet is arranged in the housing and opposite to the air outlet; a laser head, the laser head is movably arranged in the working cavity.

2. The laser processing apparatus according to claim 1, wherein The laser processing device further comprises a fan assembly, the fan assembly is arranged between the light shielding sheet and the air outlet, and the light shielding sheet is connected to the fan assembly.

3. The laser processing apparatus according to claim 2, wherein The light shielding sheet comprises a light shielding plate and a leg bent with the light shielding plate, the leg is protruded from a side of the light shielding plate facing the fan assembly and connected to the fan assembly.

4. The laser processing apparatus according to claim 3, wherein The leg comprises a first leg, each of four corners of the light shielding plate is provided with a first leg, and each of the first legs is clamped to a corner of the fan assembly.

5. The laser processing apparatus according to claim 4, wherein The four first legs and the light shielding plate form a receiving space, and the fan assembly is received in the receiving space, and each of the first legs is clamped to a side wall of the fan assembly.

6. The laser processing apparatus according to claim 5, wherein The light shielding plate has two opposite first sides, the first leg comprises a first bent part and a second bent part, the first bent part is bent with the first side and protruded from a side facing the fan assembly; On the same first side, a side of a first bent part away from another first bent part is provided with the second bent part protruding towards the fan assembly, and the second bent part is clamped to a side wall of the fan assembly.

7. The laser processing apparatus according to claim 6, wherein The fan assembly comprises a shroud and a blade arranged in the shroud, the light shielding plate is spaced apart from the shroud, the shroud has two opposite first sides and two opposite second sides, the shroud is received in the receiving space, the first side faces the first bent part, the second side faces the second bent part, a clamping step is formed at a connection between the first side and the second side, and the second bent part is clamped to the clamping step.

8. The laser processing apparatus according to claim 7, wherein A surface of the clamping step is recessed with a clamping groove, a side of the second bent part facing the clamping groove is protruded with a clamping block, and the clamping block is clamped in the clamping groove.

9. The laser processing apparatus according to claim 7, wherein The light shielding plate has two opposite second sides, and the second sides are clamped between the two first sides. The leg further comprises a second leg, the second leg comprises a third bent part and a fourth bent part, the third bent part is bent with the second side and protruded from a side facing the fan assembly, and the fourth bent part is arranged at a free end of the third bent part and bent towards the shroud; A surface of the clamping step is protruded with a shielding plate, and the fourth bent part is buckled on a side surface of the shielding plate away from the light shielding plate.

10. The laser processing apparatus according to claim 4, wherein The leg further comprises a third leg, the third leg is bent with the light shielding plate and protruded from a side facing the fan assembly, and a wire clamping hole for wire harness is arranged on the third leg.

11. The laser processing apparatus according to any one of claims 1 to 10, wherein The covering area of the light shielding sheet is not less than the area of the air outlet; and / or, The material of the light shielding sheet is metal material; and / or, the light shielding sheet is an integral structure.

12. The laser processing apparatus according to any one of claims 1 to 10, wherein The shell comprises a shell body and a partition plate arranged in the shell body to divide a cavity in the shell body into a front cavity and a rear cavity, an exhaust opening is arranged on the partition plate to communicate the front cavity and the rear cavity, the air outlet is arranged on a side wall of the rear cavity and is arranged opposite to the exhaust opening, and the light-blocking sheet is arranged in the rear cavity and between the air outlet and the exhaust opening.

13. The laser processing apparatus of claim 12, wherein The laser head is movably arranged in the front cavity. The laser processing device further comprises a track mechanism, the track mechanism comprises first tracks and second tracks, the first tracks are arranged on opposite sides of the front cavity along a first direction, the second tracks are reciprocally movably arranged on the first tracks along a second direction, and the laser head is movably arranged on the second tracks.

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