Laser processing device with splash dust blocking structure

Abstract

The utility model discloses a laser processing device with a splash dust blocking structure. The laser processing device comprises a hollow pipe body and a magnetic attraction piece connected with the inner wall of the pipe body. A through laser channel is arranged in the tube body; the magnetic attraction piece is arranged in the radial direction of the pipe body and provided with a through hole allowing the laser beam to penetrate through, and the aperture of the through hole is not smaller than the diameter of the laser beam. Through the radial arrangement of the pipe body, the magnetic attraction surface of the magnetic attraction piece intersects with the optical axis of the laser beam, the magnetic attraction piece is closer to the optical axis, the magnetic attraction piece serves as a blocking piece and has the magnetic attraction effect, waste residues located near the optical axis are attracted more easily, the waste residues penetrating into the laser channel are effectively reduced, and the mirror surface is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of laser processing instruments, and more specifically, to a laser processing device with a splash and dust blocking structure. Background Art

[0002] Laser cutting utilizes a laser beam with a high power density to irradiate the material to be cut, and the material is rapidly melted, vaporized, ablated or reaches the ignition point through the energy of the laser beam, so as to cut the workpiece. Laser welding uses a laser beam with a high energy density as a heat source to melt and weld the workpiece. In the processes of laser cutting, laser welding and other processing, waste residues will inevitably be generated, and after the generation of waste residues, it is easy to invade the laser processing device through the laser emission channel.

[0003] Since the laser processing device includes valuable components such as a laser generator and an optical lens group, in the prior art, a protective mirror is usually set to protect the optical lens and prevent waste residues from invading the laser processing device and damaging valuable components. However, although the protective mirror can avoid damage to the optical lens, under the long-term impact of waste residues, it is relatively easy to be damaged itself, and the replacement cost is also relatively high.

[0004] In the prior art, the magnetic attraction structure is usually attached to the inner wall of the tube body, the magnetic attraction surface is the side surface along the optical axis direction, and the magnetic attraction structures are attached to the inner walls of the tube bodies of the laser channels, resulting in a large amount of use of the magnetic attraction structure. Moreover, the magnetic attraction surface attached to the inner wall of the tube body is far from the center of the optical axis, and the magnetic attraction force on the waste residues at the center of the optical axis is the weakest, but the waste residues splashing along the center of the optical axis are the most dangerous and the easiest to reach the mirror surface directly.

[0005] Therefore, there is an urgent need to provide a laser processing device with a splash and dust blocking structure that can avoid damage to the optical lens or the protective mirror in the laser processing device by waste residues. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the above-mentioned defects existing in the prior art, and provide a laser processing device with a splash and dust blocking structure.

[0007] To achieve the above purpose, the technical solution of the utility model is as follows:

[0008] A laser processing device with a splash and dust blocking structure includes: a hollow tube body and a magnetic attraction member connected to the inner wall of the tube body; a through laser channel is provided in the tube body; the magnetic attraction member is arranged along the radial direction of the tube body, the magnetic attraction member is provided with a through hole for the laser beam to penetrate, and the aperture of the through hole is not less than the diameter of the laser beam.

[0009] Optionally, two or more magnetic attraction members are arranged in the tube body in sequence along the optical axis direction of the laser beam.

[0010] Optionally, the laser channel includes a laser inlet and a laser outlet that are oppositely arranged along the optical axis direction of the laser beam. Along the direction from the laser inlet to the laser outlet, the aperture of the through hole on the magnetic attraction member gradually decreases.

[0011] Optionally, a support member is further provided inside the tube body, and the support member is detachably connected to the inner wall of the tube body; the magnetic attraction member is arranged on the support member.

[0012] Optionally, the support member is a cylindrical structure with a continuous surface.

[0013] Optionally, the support member is a cylindrical structure with a discontinuous surface, and the support member includes a plurality of sub-support members arranged at intervals along the optical axis direction of the laser beam.

[0014] Optionally, a waste residue collection member is further provided inside the tube body, and the waste residue collection member is detachably connected to the inner wall of the tube body.

[0015] Optionally, the surface of the magnetic attraction member is a rough surface.

[0016] Optionally, an adhesive layer is further provided on the surface of the magnetic attraction member.

[0017] Optionally, the magnetic attraction member is a permanent magnet or an electromagnet.

[0018] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0019] The embodiment of the present utility model provides a laser processing device with a splash and dust blocking structure, including: a hollow tube body and a magnetic attraction member connected to the inner wall of the tube body; a through laser channel is provided inside the tube body; the magnetic attraction member is arranged radially along the tube body, and the magnetic attraction member is provided with a through hole for the laser beam to penetrate, and the aperture of the through hole is not less than the diameter of the laser beam. By arranging radially along the tube body, the magnetic attraction surface of the magnetic attraction member intersects with the optical axis of the laser beam, and the magnetic attraction member is closer to the optical axis. While serving as a blocking member, the magnetic attraction member has a magnetic attraction effect, and it is easier to magnetically attract waste residues near the optical axis, effectively reducing the waste residues that penetrate deep into the laser channel and avoiding damage to the mirror surface. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Among them:

[0022] Figure 1It is a schematic diagram of a laser processing device with a splash and dust blocking structure provided by the present utility model.

[0023] Figure 2 It is another schematic diagram of a laser processing device with a splash and dust blocking structure provided by the present utility model. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0025] Refer to Figure 1 , a laser processing device with a splash and dust blocking structure, includes: a hollow tube body 100 and a magnetic attracting member 1 connected to the inner wall of the tube body 100. A through laser channel 101 is provided in the tube body 100; the magnetic attracting member 1 is arranged along the radial direction of the tube body 100, and the magnetic attracting member 1 is provided with a through hole 10 for the laser beam to penetrate, and the aperture of the through hole 10 is not less than the diameter of the laser beam;

[0026] It should be noted that in the embodiment, the laser processing device may be a laser cutting device, including an optical lens group 200, a tube body 100, and a nozzle 300 arranged in sequence. Figure 1 In order to clearly show the internal structure of the tube body 100, the sizes of the optical lens group 200, the tube body 100, and the nozzle 300 shown in the figure are only for illustrative purposes and are not specifically limited. By arranging the magnetic attracting member 1 between the nozzle 300 and the optical lens group 200 of the laser processing device, the magnetic attracting member 1 blocks the waste residue entering the laser channel 101 during laser cutting, avoiding contamination of the optical lens group 200. In this embodiment, by arranging the magnetic attracting member 1 along the radial direction of the tube body 100, further, by arranging the magnetic attracting member 1 perpendicular to the optical axis of the laser beam, the magnetic attracting surface of the magnetic attracting member 1 is perpendicular to the optical axis of the laser beam, increasing the effective magnetic attracting surface of the magnetic attracting member 1. The magnetic attracting member 1 has a magnetic attracting effect while serving as a blocking member. The magnetic attracting member 1 is closer to the optical axis and is more likely to magnetically attract the waste residue near the optical axis of the laser beam, effectively reducing the waste residue deep into the laser channel 101. Preferably, the aperture of the through hole 10 is equal to the diameter of the laser beam, and the through hole 10 is a through hole pre-processed and opened, so that the spot diameter at the position corresponding to the through hole 10 on the laser beam is adapted to the diameter of the through hole 10. Further, a high-temperature resistant protective layer may be provided on the side of the magnetic attracting member 1 close to the optical axis of the laser beam. Specifically, the magnetic attracting member 1 may be a permanent magnet or an electromagnet.

[0027] It can be understood that the magnetic attracting member 1 provided in this embodiment is applicable to different types of laser processing devices. Exemplarily, the laser processing device can be a laser processing head. Generally, the laser processing head has a housing, and at least one optical system is arranged in the housing for guiding and / or shaping the laser beam; in particular, a collimating optical system and a focusing optical system. The collimating optical system is used to collimate the laser beam divergently introduced from the laser beam source into the laser processing head, and the focusing optical system helps to focus the laser beam on the surface of the workpiece. The collimating optical system and the focusing optical system can define the beam path of the laser beam in the housing of the laser processing head. A nozzle is provided at one end of the housing close to the workpiece to be processed. The blocking structure 1 in this embodiment can be installed between the optical system and the nozzle in the housing of the laser processing head to prevent the waste residue entering from the nozzle from contaminating the optical system. Exemplarily, the laser processing device can be a hand-held cutting gun. Generally, the hand-held cutting gun includes a hand-held gun body, a laser emitting barrel, and a laser emitting nozzle. An optical lens is provided in the hand-held gun body; the blocking structure 1 in this embodiment can be installed in the laser emitting barrel of the hand-held cutting gun to prevent the waste residue entering from the laser emitting nozzle from contaminating the optical lens. The laser processing head and the hand-held cutting gun can both be common laser processing heads and hand-held cutting guns in the prior art, and are not specifically limited herein. The magnetic attracting member 1 in this embodiment can also be applied to laser processing devices such as laser welding and laser marking to play an anti-waste residue role.

[0028] In some alternative embodiments, referring to Figure 2 , two or more magnetic attracting members 1 are arranged in the tube body 100 in sequence along the optical axis direction of the laser beam.

[0029] It can be understood that by arranging two or more magnetic attracting members 1, the waste residue is blocked step by step by the multiple magnetic attracting members 1, effectively reducing the waste residue penetrating into the interior of the laser channel 101.

[0030] In some alternative embodiments, the laser channel 101 includes a laser inlet 1011 and a laser outlet 1012 that are oppositely arranged along the optical axis direction of the laser beam. Along the direction from the laser inlet 1011 to the laser outlet 1012, the aperture of the through hole 10 on the magnetic attracting member 1 gradually decreases.

[0031] It should be noted that Figure 2 takes the arrangement of two magnetic attracting members 1 as an example. The first magnetic attracting member 11 is arranged close to the laser outlet 1012, and the second magnetic attracting member 12 is arranged close to the laser inlet 1011. The through hole 10 on the first magnetic attracting member 11 is the first through hole 111, and the through hole 10 on the second magnetic attracting member 12 is the second through hole 121. The aperture D1 of the first through hole 111 is smaller than the aperture D2 of the second through hole 121.

[0032] It can be understood that since the diameter of the laser beam gradually decreases from the laser inlet 1011 to the laser inlet 1012, the aperture D1 of the first through hole 111 is made smaller than the aperture D2 of the second through hole 121. The first through hole 111 and the second through hole 121 form a laser channel 101 with a gradually changing diameter. The decrease in the aperture of the first through hole 111 further increases the effective blocking area of the first magnetic attracting member 11 and reduces the waste residue penetrating into the interior of the laser channel 101.

[0033] In some alternative embodiments, referring to Figure 1 , a support member 2 is further provided inside the tube body 100. The support member 2 is detachably connected to the inner wall of the tube body 100; the magnetic attracting member 1 is arranged on the support member 2.

[0034] It should be noted that the support member 2 is detachably connected to the inner wall of the tube body 100. For example, the tube body 100 is directly sleeved outside the support member 2, which facilitates the installation or disassembly of the support member 2.

[0035] Specifically, in this embodiment, the support member 2 is in a cylindrical structure. The support member 2 can be a cylindrical structure with a continuous surface. When multiple magnetic attracting members 1 are arranged inside the tube body 100, the multiple magnetic attracting members 1 are all arranged on one support member 2, which facilitates the overall disassembly and assembly of the support member 2 and the magnetic attracting members 1. The support member 2 can be a cylindrical structure with a discontinuous surface, that is, the support member 2 includes a plurality of sub-support members (not shown in the figure) arranged at intervals along the optical axis direction of the laser beam. The multiple magnetic attracting members 1 are respectively installed on the multiple sub-support members, which facilitates the separate disassembly of each magnetic attracting member 1 as needed.

[0036] In some alternative embodiments, referring to Figure 2 , a waste residue collecting member 3 is further provided inside the tube body 100. The waste residue collecting member 3 is detachably connected to the inner wall of the tube body 100.

[0037] It can be understood that the waste residue collecting member 3 is also in a barrel shape. The waste residue collecting member 3 can be a waste residue collecting bag sleeved inside the blocking support member 13, or a tearable waste residue adsorption film; the waste residue is adsorbed on the inner side surface of the waste residue collecting member 3. The inner side surface of the waste residue collecting member 3 is the side of the waste residue collecting member 3 away from the inner wall of the tube body 100. The setting of the waste residue collecting member 3 facilitates the collection and cleaning of the waste residue. Exemplarily, referring to Figure 2 , Figure 2 as an example, the waste residue collecting member 2 is arranged between the first magnetic attracting member 11 and the magnetic attracting member 12. The waste residue collecting member 3 is detachably connected to the inner wall of the blocking member support 2, and the waste residue collecting member 3 can be disassembled and assembled together with the support member 2.

[0038] In some alternative embodiments, the surface of the magnetic attracting member 1 is a rough surface.

[0039] It is understandable that the rough surface of the magnetic attracting member 1 can be a pyramid-structured surface, a honeycomb-shaped surface, etc. By setting the rough surface, when the waste residue passes through the magnetic attracting member 1, the waste residue is more likely to adhere to the surface of the magnetic attracting member 1, so as to achieve a better blocking effect. The magnetic attracting member 1 further adsorbs the waste residue to prevent the waste residue from damaging or soiling the optical mirror surface during the movement of the mobile cutting device.

[0040] In some alternative embodiments, the magnetic attracting member 1 is further provided with an adhesive layer.

[0041] It can be understood that the preferred configuration of the adhesive layer is an adhesive layer with high adhesion, so as to be able to combine waste residue particles and / or waste residue suspended particles for a long time. The adhesive layer can be a film, an oil, etc.; further, the adhesive layer is a tearable isolation film. By spraying a detachable isolation film, such as a film formed after curing an anti-splash agent analogue, the splashes can be shaken off by vibration or other means, or the isolation film and the splashes can be torn off together for cleaning. When the waste residue particles enter the interior of the tube body 100 of the laser processing device and change their positions due to the movement of the laser processing device or other external influences, the adhesive layer can combine or fix the particles in the waste residue by adhesion. The adhesive layer adsorbs and fixes the waste residue to prevent the waste residue from moving arbitrarily during the movement of the mobile cutting device and damaging or soiling the optical mirror surface. Further, the adhesive layer is detachably connected to the magnetic attracting member 1. When the adhesive layer is soiled, only the adhesive layer needs to be replaced, without replacing the magnetic attracting member 1, reducing consumables and saving costs.

[0042] The above-described embodiments only represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A laser processing device with a splash and dust blocking structure, characterized in that, Comprising: A hollow tube body and a magnetic attracting member connected to the inner wall of the tube body; a through laser channel is provided in the tube body; the magnetic attracting member is arranged along the radial direction of the tube body, and the magnetic attracting member is provided with a through hole for the laser beam to penetrate, and the aperture of the through hole is not less than the diameter of the laser beam.

2. The laser processing device with a splash and dust blocking structure according to claim 1, wherein, Two or more magnetic attracting members are arranged in the tube body in sequence along the optical axis direction of the laser beam.

3. The laser processing device with a splash and dust blocking structure according to claim 2, wherein, The laser channel includes a laser inlet and a laser outlet which are oppositely arranged along the optical axis direction of the laser beam. Along the direction from the laser inlet to the laser outlet, the aperture of the through hole on the magnetic attracting member gradually decreases.

4. The laser processing device with a splash and dust blocking structure according to claim 1, characterized in that, A support member is further provided in the tube body, and the support member is detachably connected to the inner wall of the tube body; the magnetic attracting member is arranged on the support member.

5. The laser processing device with a splash and dust blocking structure according to claim 4, wherein, The support member is a cylindrical structure with a continuous surface.

6. The laser processing apparatus with a splash and dust blocking structure according to claim 4, wherein, The support member is a cylindrical structure with a discontinuous surface, and the support member includes a plurality of sub-support members arranged at intervals along the optical axis direction of the laser beam.

7. The laser processing device with a splash and dust blocking structure according to claim 1, wherein, A waste residue collecting member is further provided in the tube body, and the waste residue collecting member is detachably connected to the inner wall of the tube body.

8. The laser processing device with a splash and dust blocking structure according to claim 1, wherein The surface of the magnetic attracting member is a rough surface.

9. The laser processing device with a splash and dust blocking structure according to claim 1, wherein An adhesive layer is further provided on the surface of the magnetic attracting member.

10. The laser processing device with a splash and dust blocking structure according to claim 1, wherein The magnetic attracting member is a permanent magnet or an electromagnet.

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