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 pipe body and the blocking structure contained in the pipe body. A laser channel is arranged in the tube body; the blocking structure comprises a blocking piece and a blocking piece supporting piece, the blocking piece is arranged on the blocking piece supporting piece, and the blocking piece supporting piece is detachably connected with the inner wall of the pipe body; a preset angle is formed between the stopper and the optical axis of the laser beam; the first blocking piece is arranged close to the laser emergent end, and the second blocking piece is arranged close to the laser incident end; the first blocking piece is provided with a first through hole for a laser beam to pass through, the second blocking piece is provided with a second through hole for the laser beam to pass through, and the first through hole and the second through hole are respectively and completely matched with the outline of the laser beam. The first blocking piece and the second blocking piece are installed on the blocking piece supporting piece, the blocking pieces are convenient to disassemble and assemble, waste residues entering the laser channel are blocked by the first blocking piece and the second blocking piece step by step through the multi-stage structure of the first blocking piece and the second blocking piece, the waste residues penetrating into the laser channel are effectively reduced, and an optical lens set is prevented from being polluted.

Description

Technical Field

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

[0002] Laser cutting utilizes a high-power density laser beam to illuminate the material being cut. The energy of the laser beam rapidly melts, vaporizes, ablates, or even ignites the material, thereby separating the workpiece. Laser welding utilizes a high-energy density laser beam as a heat source to melt and weld the workpiece. During laser cutting and welding processes, waste residue is inevitably generated, which can easily enter the laser processing device through the laser exit channel.

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

[0004] Therefore, there is an urgent need to provide a laser processing device with a splash dust blocking structure that can prevent waste residue from damaging optical lenses or protective lenses in the laser processing device. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned defects in the prior art and provide a laser processing device with a splash and dust blocking structure.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A laser processing device with a splash and dust blocking structure comprises: a tube body and a blocking structure accommodated inside the tube body; a through laser channel is provided in the tube body; the blocking structure comprises a blocking member and a blocking member support member, the blocking member is arranged on the blocking member support member, and the blocking member support member is detachably connected to the inner wall of the tube body; the blocking member is arranged at a preset angle to the optical axis of the laser beam; the blocking member comprises a first blocking member and a second blocking member, the first blocking member is arranged near the laser output end, and the second blocking member is arranged near the laser incident end; the first blocking member is provided with a first through hole for the laser beam to pass through, and the second blocking member is provided with a second through hole for the laser beam to pass through, and the first through hole and the second through hole are respectively fully adapted to the laser beam profile.

[0008] Optionally, the aperture of the first through hole is smaller than the aperture of the second through hole.

[0009] Optionally, the surface of the blocking member is a rough surface.

[0010] Optionally, the number of the blocking structures is more than two.

[0011] Optionally, the stopper includes a base and an adhesive layer arranged on the surface of the base.

[0012] Optionally, a surface of the substrate close to the laser emitting end is a first surface, a surface of the substrate away from the laser emitting end is a second surface, and both the first surface and the second surface are provided with an adhesive layer.

[0013] Optionally, the blocking member includes a magnetic member, and an adhesive layer is provided on the surface of the magnetic member.

[0014] Optionally, the baffle support member is a tubular structure with a continuous surface, or a tubular structure with a discontinuous surface.

[0015] Optionally, a waste residue collecting member is provided between the first stopper and the second stopper, and the waste residue collecting member is detachably connected to the inner wall of the stopper support member.

[0016] Optionally, the first through hole and the second through hole are formed by laser ablation.

[0017] The implementation of the present invention will have the following beneficial effects:

[0018] The present invention provides a laser processing device with a splash and dust blocking structure, comprising: a tube body and a blocking structure housed within the tube body; a laser channel extending through the tube body; the blocking structure comprising a blocking member and a blocking member support, the blocking member being disposed on the blocking member support and being detachably connected to the inner wall of the tube body; the blocking member being disposed at a preset angle to the optical axis of the laser beam; the blocking member comprising a first blocking member and a second blocking member, the first blocking member being disposed near the laser output end and the second blocking member being disposed near the laser input end; the first blocking member being provided with a first through hole for passage of the laser beam, and the second blocking member being provided with a second through hole for passage of the laser beam, the first through hole and the second through hole being fully adapted to the laser beam profile, respectively. Mounting the blocking member on the blocking member support facilitates assembly and disassembly of the blocking member, and the multi-stage structure of the first and second blocking members allows waste slag entering the laser channel to be blocked step by step by the first and second blocking members, effectively reducing waste slag entering the laser channel and preventing contamination of the optical lens assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] in:

[0021] Figure 1 This is a schematic diagram of a laser processing device with a splash and dust blocking structure provided by the present invention.

[0022] Figure 2 yes Figure 1 A schematic diagram of the middle block.

[0023] Figure 3 This is another schematic diagram of the laser processing device with a splash and dust blocking structure provided by the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1 The utility model discloses a laser processing device with a splash and dust blocking structure, comprising: a tube body 100 and a blocking structure 1 accommodated inside the tube body 100; the tube body 100 is provided with a through laser channel 101; the blocking structure 1 comprises a blocking member 11 and a blocking member support member 12, the blocking member 11 is arranged on the blocking member support member 12, and the blocking member support member 12 is detachably connected to the inner wall of the tube body 100; the blocking member 11 is arranged at a preset angle to the optical axis of the laser beam, the blocking member 11 comprises a first blocking member 111 and a second blocking member 112, the first blocking member 111 is arranged near the laser emitting end, and the second blocking member 112 is arranged near the laser incident end; the first blocking member 111 is provided with a first through hole 1111 for the laser beam to pass through, and the second blocking member 112 is provided with a second through hole 1121 for the laser beam to pass through, and the apertures of the first through hole 1111 and the second through hole 1121 are fully adapted to the laser beam profile, respectively.

[0026] It should be noted that the laser processing device in this embodiment may be a laser cutting device, comprising an optical lens assembly 200, a tube body 100 and a nozzle 300 arranged in sequence. Figure 1To clearly illustrate the internal structure of the tube body 100, the dimensions of the optical lens assembly 200, the tube body 100, and the nozzle 300 shown in the figure are for schematic illustration only and are not intended to be specific limitations. By disposing the blocking structure 1 between the nozzle 300 and the optical lens assembly 200 of the laser processing device, the blocking structure 1 blocks waste slag from entering the laser channel 101 during laser cutting, thereby preventing contamination of the optical lens assembly 200. The blocker 11 is arranged at a preset angle to the optical axis of the laser beam. Specifically, the first blocker 111 and the second blocker 112 are both arranged perpendicular to the optical axis of the laser beam. A first through hole 1111 and a second through hole 1121 are provided on the first blocker 111 and the second blocker 112, which are only for the passage of the laser beam. This maximizes the effective blocking area of the first blocker 111 and the second blocker 112, thereby improving the slag blocking effect of the blocker 11. Exemplarily, the first through hole 1111 and the second through hole 1121 can be pre-processed through holes, and the spot diameter at the position corresponding to the through hole on the laser beam is adapted to the diameter of the through hole; exemplary, the first through hole 1111 and the second through hole 1121 can be ablated by the laser beam at the beginning of laser processing, further increasing the matching degree between the through hole and the laser beam, and further improving the slag blocking effect of the first stopper 111 and the second stopper 112.

[0027] By providing a multi-level structure of first and second stops 111, 112, waste residue is gradually blocked by the first and second stops 111, 112, effectively reducing the amount of waste residue that penetrates into the laser channel 101. The stopper support 12 is detachably connected to the tube body 100. For example, the tube body 100 is directly mounted on the stopper support 12, and the stopper support 12 abuts the inner wall of the tube body 100, facilitating the installation or removal of the blocking structure 1. The first and second stops 111, 112 are mounted on the stopper support 12, facilitating the installation and removal of the stopper 11. In this embodiment, the blocker support 12 and the blocker 11 are both cylindrical structures. The blocker support 12 can be a cylindrical structure with a continuous surface or a cylindrical structure with a discontinuous surface. When the blocker support 12 is a cylindrical structure with a continuous surface, the first blocker 111 and the second blocker 112 are both installed on the blocker support 12, and the overall blocking structure 1 and all blocks 11 can be installed or disassembled at one time, thereby improving the assembly and disassembly efficiency; when the blocker support 12 is a cylindrical structure with a discontinuous surface, that is, the blocker support 12 includes a first sub-support and a second sub-support (not shown in the figure) arranged in sequence along the optical axis direction of the laser beam, the first blocker 111 is installed on the first sub-support, and the second blocker 112 is installed on the second sub-support. Furthermore, the first stopper 111 and the second stopper 112 are respectively detachably connected to the stopper support 12, such as the commonly used gluing or snap-on connection. When the stopper 11 is dirty, only the stopper 11 needs to be replaced, and there is no need to replace the entire blocking structure 1. That is, only the first stopper 111 and the second stopper 112 are consumables, saving costs.

[0028] It will be appreciated that the blocking structure 1 provided in this embodiment is applicable to various types of laser processing devices. For example, the laser processing device may be a laser processing head. Typically, a laser processing head comprises a housing containing at least one optical system for guiding and / or shaping the laser beam. Specifically, the collimating optical system is used to collimate the laser beam introduced into the laser processing head from a diverging laser beam source, while the focusing optical system helps focus the laser beam on the workpiece surface. The collimating optical system and the focusing optical system define the laser beam's path within the laser processing head housing. A nozzle is positioned at one end of the housing near the workpiece to be processed. The blocking structure 1 in this embodiment can be installed between the optical system and the nozzle in the laser processing head housing to prevent waste residue entering from the nozzle from contaminating the optical system. For example, the laser processing device may be a handheld cutting gun. Typically, a handheld cutting gun comprises a handheld gun body, a laser output barrel, and a laser nozzle. The handheld gun body is provided with an optical lens. In this embodiment, the blocking structure 1 can be installed within the laser output barrel of the handheld cutting gun to prevent waste residue entering from the laser nozzle from contaminating the optical lens. The laser processing head and the handheld cutting gun can be commonly used laser processing heads and handheld cutting guns in the prior art, and are not specifically limited here. The blocking structure 1 in this embodiment can also be used in laser processing devices such as laser welding and laser marking to play a slag removal role.

[0029] In some optional embodiments, referring to Figure 1 , the aperture D1 of the first through hole 1111 is smaller than the aperture D2 of the second through hole 1121 .

[0030] It should be noted that the first stopper 111 is positioned near the laser output end, while the second stopper 112 is positioned near the laser input end. The laser output end is the end of the laser device closest to the workpiece to be processed, while the laser input end is the end of the laser device closest to the optical lens assembly 200. Because the diameter of the laser beam gradually decreases from the laser input end to the laser output end, the aperture D1 of the first through-hole 1111 is smaller than the aperture D2 of the second through-hole 1121. The first through-hole 1111 and the second through-hole 1121 form a laser channel 101 with a gradually decreasing diameter. The reduced aperture of the first through-hole 1111 further increases the effective blocking area of the first stopper 111, thereby reducing the amount of waste residue that penetrates deep into the laser channel 101.

[0031] In some optional embodiments, the surface of the blocking member 11 is a rough surface.

[0032] It should be noted that the rough surface of the baffle 11 can be a pyramid-shaped surface, a honeycomb-shaped surface, etc. By setting the rough surface, when the waste slag passes through the baffle 11, the waste slag is more likely to adhere to the rough surface of the baffle 11, thereby achieving a better blocking effect. While the baffle 11 blocks the waste slag, it further absorbs the waste slag to prevent the waste slag from damaging or staining the optical mirror during the moving cutting device.

[0033] In some optional embodiments, the number of the blocking structures 1 is more than two.

[0034] It is understandable that by providing two or more blocking structures 1 , that is, by providing a multi-stage blocking member 11 , the amount of waste residue penetrating into the laser channel 101 can be further reduced.

[0035] In some optional embodiments, referring to Figure 2 The stopper 11 includes a base 13 and an adhesive layer 14 arranged on the surface of the base 13 .

[0036] It is understood that the adhesive layer 14 is preferably configured as an adhesive layer with high adhesion, so that it can bind waste particles and / or waste suspended particles for a long time. The adhesive layer can be a film, grease, etc.; further, the adhesive layer is a tearable isolation film. By spraying a removable isolation film, such as a splash guard, the film is formed after curing. The splashing material can be shaken off by vibration or other means, or the isolation film and the splashing material can be torn off and cleaned. When waste particles enter the tube body 100 of the laser processing device and change position due to movement of the laser processing device or other external influences, the adhesive layer 14 can adhere to the particles in the waste or fix them. The adhesive layer 14 fixes the waste by adsorption, preventing the waste from moving arbitrarily during the movement of the cutting device and damaging or staining the optical mirror surface. Furthermore, the adhesive layer 14 is detachably connected to the base 13. When the adhesive layer 14 is dirty, only the adhesive layer 14 needs to be replaced, without replacing the entire blocker 11, reducing consumables and saving costs.

[0037] In some optional embodiments, referring to Figure 2 The side of the substrate 13 close to the laser emitting end is a first surface 131 , and the side of the substrate 13 away from the laser emitting end is a second surface. An adhesive layer 14 is provided on both the first surface 131 and the second surface.

[0038] It is understandable that by providing an adhesive layer 14 on both the first surface 131 and the second surface (not shown in the figure), the effective adhesion area of the block 11 is increased, further reducing waste residue penetrating into the laser channel 101 and avoiding damage or contamination of the optical mirror. Figure 2The structure of the adhesive layer 14 can be shown in the figure, and the area of the adhesive layer 14 is smaller than the area of the substrate 13 as an example. Preferably, the area of the adhesive layer 14 is equal to the area of the substrate 13, so that the surface of the stopper 11 has an adsorption effect, thereby enhancing the slag blocking effect of the stopper 11.

[0039] In some optional embodiments, combined with Figure 1 、 Figure 2 , the blocking member 11 includes a magnetic member 15 .

[0040] It is understandable that in the specific cutting process, the waste residue will be blocked by the blocking member 11 after invading the laser projection channel, but some of the waste residue may continue to invading deeper into the laser projection channel through the first through hole 1111 or the second through hole 1121, and the magnetic member 15 can magnetically adsorb the waste residue, thereby alleviating the invading of the waste residue passing through the first through hole 1111 or the second through hole 1121 to a deeper position. Specifically, the magnetic member 15 can be a permanent magnet or an electromagnet. Furthermore, an adhesive layer 14 is provided on the surface of the magnetic member 15. By providing the adhesive layer 14 on the surface of the magnetic member 15, the magnetic member 15 and the adhesive layer 14 cooperate to absorb the residue, thereby enhancing the adsorption effect.

[0041] In some optional embodiments, referring to Figure 3 A waste residue collecting member 2 is further provided between the first stopper 111 and the second stopper 112 , and the waste residue collecting member 2 is detachably connected to the inner wall of the stopper support member 12 .

[0042] It can be understood that the waste residue collecting piece 2 is also a barrel-shaped structure. The waste residue collecting piece 2 can be a waste residue collecting bag mounted in the blocking support piece 12, or a tearable waste residue adsorption film. The waste residue collecting piece 2 is detachably connected to the blocking support piece 12, and the waste residue is adsorbed on the inner side of the waste residue collecting piece 2. The inner side of the waste residue collecting piece 2 is the side of the waste residue collecting piece 2 away from the inner wall of the tube body 100. The setting of the waste residue collecting piece 2 facilitates the collection and cleaning of waste residue.

[0043] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A laser processing device with a splash dust blocking structure, characterized in that: include: A tube body and a blocking structure accommodated inside the tube body; a through laser channel is provided in the tube body; the blocking structure includes a blocking member and a blocking member support member, the blocking member is arranged on the blocking member support member, and the blocking member support member is detachably connected to the inner wall of the tube body; the blocking member is arranged at a preset angle to the optical axis of the laser beam; the blocking member includes a first blocking member and a second blocking member, the first blocking member is arranged near the laser output end, and the second blocking member is arranged near the laser incident end; the first blocking member is provided with a first through hole for the laser beam to pass through, and the second blocking member is provided with a second through hole for the laser beam to pass through, and the first through hole and the second through hole are respectively fully adapted to the laser beam profile.

2. The laser processing device with a splash dust blocking structure according to claim 1, characterized in that: The aperture of the first through hole is smaller than the aperture of the second through hole.

3. The laser processing device with a splash dust blocking structure according to claim 1, characterized in that: The surface of the blocking member is a rough surface.

4. The laser processing device with a splash dust blocking structure according to claim 1, characterized in that: The number of the blocking structures is two or more.

5. The laser processing device with a splash dust blocking structure according to claim 1, characterized in that: The stopper comprises a base and an adhesive layer arranged on the surface of the base.

6. The laser processing device with a splash dust blocking structure according to claim 5, characterized in that: The side of the substrate close to the laser emitting end is a first surface, and the side of the substrate away from the laser emitting end is a second surface. The adhesive layer is provided on both the first surface and the second surface.

7. The laser processing device with a splash dust blocking structure according to claim 1, characterized in that: The blocking member includes a magnetic member, and an adhesive layer is provided on the surface of the magnetic member.

8. The laser processing device with a splash dust blocking structure according to claim 1, characterized in that: The stopper support member is a tubular structure with a continuous surface or a tubular structure with a discontinuous surface.

9. The laser processing device with a splash and dust blocking structure according to claim 1, characterized in that: A waste residue collecting member is further provided between the first stopper and the second stopper, and the waste residue collecting member is detachably connected to the inner wall of the stopper support member.

10. The laser processing device with a splash dust blocking structure according to claim 1, characterized in that: The first through hole and the second through hole are formed by laser ablation.

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