Passive heat dissipation mechanism for absorbing laser energy

Abstract

The invention provides a passive heat dissipation mechanism for absorbing laser energy. The passive heat dissipation mechanism comprises a heat insulation protection cover; the high-energy absorption main body is located on the inner side of the heat insulation protection cover, the end face, facing the laser beam emission direction, of the high-energy absorption main body is a first end face, the bottom face of the high-energy absorption main body is a second end face, and the first end face is provided with an inclined incident plane; the inclined incident plane is obliquely arranged downwards in the laser beam emitting direction, the upper end of the inclined incident plane is arranged on the first end face, and the lower end of the inclined incident plane is arranged on the second end face; the inclined incident plane is provided with at least two first inclined grooves, and the bottom surface of each first inclined groove and the inclined incident plane form an included angle a. Redundant laser beam energy can be reasonably converted, active heat dissipation is effectively replaced with a passive heat dissipation mode, energy consumption and material consumption are reduced, and the working environment and materials are effectively protected.

Description

Technical Field

[0001] The invention relates to the technical field of laser processing, and in particular to a passive heat dissipation mechanism for absorbing laser energy. Background Art

[0002] Most of the excess energy absorption mechanisms in laser cutting systems currently used in the market are direct absorption or single reflection structures, and it is difficult to dissipate heat efficiently, or fans are required for active heat dissipation. The structural disadvantages are as follows:

[0003] 1. As the laser power increases, the absorbing material is prone to direct loss.

[0004] 2. The single reflection mechanism will reflect the high-energy beam into the workspace, causing damage to other parts or materials in the workspace.

[0005] 3. Active heat dissipation requires additional energy, resulting in energy waste. Summary of the invention

[0006] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a passive heat dissipation mechanism for absorbing laser energy, which can reasonably convert excess laser beam energy, effectively replace active heat dissipation through passive heat dissipation, reduce energy consumption and material consumption, and effectively protect the working environment and materials.

[0007] The embodiments of the present invention are implemented by the following technical solutions:

[0008] A passive heat dissipation mechanism for absorbing laser energy, comprising:

[0009] A heat-insulating protective cover, wherein the outer wall of the heat-insulating protective cover is provided with a plurality of heat dissipation slots;

[0010] A high-energy absorbing body, the high-energy absorbing body is located on the inner side of the heat-insulating protective cover, an end face of the high-energy absorbing body facing the direction of laser beam emission is a first end face, the bottom face of the high-energy absorbing body is a second end face, the first end face is provided with an inclined incident face; along the direction of laser beam emission, the inclined incident face is arranged to be inclined downward, wherein the upper end of the inclined incident face is arranged on the first end face, and the lower end of the inclined incident face is arranged on the second end face;

[0011] The inclined incident surface is provided with at least two first inclined grooves, and the bottom surfaces of the first inclined grooves form an angle a with the inclined incident surface.

[0012] According to a preferred embodiment, the angle a ranges from 15° to 85°.

[0013] According to a preferred embodiment, the angle a is 75°.

[0014] According to a preferred embodiment, an inclination angle b is formed between the inclined incident surface and a horizontal plane where the bottom surface of the high-energy absorbing body is located;

[0015] The inclination angle b ranges from 30° to 60°.

[0016] According to a preferred embodiment, the inclination angle b is 45°.

[0017] According to a preferred embodiment, the right side wall of the first inclined groove and the bottom wall of the first inclined groove form an inclined angle c, and the inclination angle c is in the range of 45° to 100°.

[0018] According to a preferred embodiment, the inclination angle c is 80°.

[0019] According to a preferred embodiment, the high energy absorbing body is located on the inner side of the heat insulation protection cover, and the high energy absorbing body is detachably connected to the heat insulation protection cover.

[0020] According to a preferred embodiment, the heat dissipation slots are arranged vertically.

[0021] According to a preferred embodiment, the inclined incident surface is provided with at least two second inclined grooves;

[0022] A second inclined groove is disposed on the lower side of each of the first inclined grooves, and the top of the second inclined groove is communicated with the bottom of the first inclined groove.

[0023] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0024] The present invention can effectively improve the working stability and safety of laser processing equipment, and can reasonably convert excess laser beam energy to avoid the inability to discharge excess laser beam energy and thus damage the absorbing material, thereby avoiding secondary damage to the machine, materials, etc. that may occur inside the equipment. Passive heat dissipation effectively replaces active heat dissipation, reduces energy consumption and material consumption, and effectively protects the working environment and materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A schematic diagram of the three-dimensional structure of a passive heat dissipation mechanism for absorbing laser energy provided by an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the main structure of a passive heat dissipation mechanism for absorbing laser energy provided by an embodiment of the present invention;

[0028] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of KK;

[0029] Figure 4 Another schematic diagram of the front view of a passive heat dissipation mechanism for absorbing laser energy provided by an embodiment of the present invention;

[0030] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of LL;

[0031] Figure 6 A schematic diagram of the structure of a lens for emitting a laser beam and a passive heat dissipation mechanism for absorbing laser energy provided in an embodiment of the present invention;

[0032] Figure 7 for Figure 6 Schematic diagram of the local structure.

[0033] Icons: 1. Thermal insulation protective cover; 2. Inclined incident surface; 3. First end surface; 4. Second end surface; 5. First inclined groove; 6. Heat dissipation groove; 7. Second inclined groove. DETAILED DESCRIPTION

[0034] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0037] Example

[0038] Please refer to Figures 1 to 7A passive heat dissipation mechanism for absorbing laser energy comprises: a heat-insulating protective cover 1, wherein the outer wall of the heat-insulating protective cover 1 is provided with a plurality of heat-dissipating grooves 6; a high-energy absorbing body, wherein the high-energy absorbing body is located on the inner side of the heat-insulating protective cover 1, wherein an end face of the high-energy absorbing body facing the direction of emission of the laser beam is a first end face 3, and a bottom face of the high-energy absorbing body is a second end face 4, wherein the first end face 3 is provided with an inclined incident surface 2; wherein the inclined incident surface 2 is inclined downwardly arranged along the direction of emission of the laser beam, wherein the upper end of the inclined incident surface 2 is arranged on the first end face 3, and the lower end of the inclined incident surface 2 is arranged on the second end face 4; wherein the inclined incident surface 2 is provided with at least two first inclined grooves 5, wherein the bottom face of the first inclined groove 5 forms an angle a with the inclined incident surface 2.

[0039] Preferably, the value range of the angle a is 15° to 85°. The value range of the angle a includes 15° and 85°.

[0040] Preferably, the angle a is 75°.

[0041] Preferably, an inclined angle b is formed between the inclined incident surface 2 and the horizontal plane where the bottom surface of the high-energy absorbing body is located;

[0042] The range of the inclination angle b is 30° to 60°. The value range of the inclination angle b includes 30° and 60°.

[0043] Preferably, the inclination angle b is 45°.

[0044] Preferably, the right side wall of the first inclined groove 5 forms an inclined angle c with the bottom wall of the first inclined groove 5, and the range of the inclined angle c is 45° to 100°. The right side wall of the first inclined groove 5 is an end face away from the inclined incident surface 2. The range of the inclined angle c is 45° and 100°.

[0045] Preferably, the inclination angle c is 80°.

[0046] Preferably, the high energy absorption body is located inside the heat insulation protection cover 1, and the high energy absorption body is detachably connected to the heat insulation protection cover 1. In this embodiment, the high energy absorption body is detachably separated from the heat insulation protection cover 1, and the high energy absorption body can be embedded in the heat insulation protection cover 1, or the high energy absorption body and the heat insulation protection cover 1 can be integrated.

[0047] Preferably, the heat dissipation slots 6 are arranged vertically. The heat dissipation slots 6 are arranged vertically to ensure and facilitate the flow of low-temperature air from bottom to top, thereby promoting heat dissipation.

[0048] Preferably, the inclined incident surface 2 is provided with at least two second inclined grooves 7;

[0049] A second inclined groove 7 is disposed at the lower side of each first inclined groove 5, and the top of the second inclined groove 7 is connected to the bottom of the first inclined groove 5. The second inclined groove 7 can guide the laser beam to enter the first inclined groove 5, and promote more laser beams to enter the first inclined groove 5 to convert energy.

[0050] Working principle of the present invention:

[0051] In this embodiment, the bottom surface is the bottom surface of the Figure 3 The bottom surface of the first inclined groove 5 is an opening on the left side, and the cross-sectional view of the first inclined groove 5 is Figure 3 The middle bottom surface, top surface, right side wall and left opening are composed, such as the inclined incident surface 2 is inclined with the left side higher and the right side lower, the first end surface 3 is the left side surface of the high energy absorbing body, and the second end surface 4 is the bottom wall of the high energy absorbing body. Other positions and directions can refer to the above orientation explanations;

[0052] The front and rear end surfaces of the first inclined groove 5 are arc surfaces. The arc surfaces can provide more reflection space in the lateral direction and promote the conversion of light energy into heat energy.

[0053] like Figure 6 As shown, H is a lens for emitting a laser beam, and the horizontal straight line with an arrow between the lens and the inclined incident surface 2 is the laser beam, wherein the arrow is the emission direction of the laser beam, that is, the laser beam is output from left to right into the first inclined groove 5 of the inclined incident surface 2, and the straight arrow in the first inclined groove 5 is the reflection path of the laser beam. Figure 6 The vertical upward arrow on the right side of the LL cross-sectional view is the direction in which part of the light energy of the laser beam is converted into part of the heat energy and dissipated, that is, the heat is dissipated from bottom to top. The blank space on the right side of the LL cross-sectional view is the location of the heat dissipation slot 6. The heat dissipation slot 6 is vertically arranged to ensure that the air circulates from bottom to top and takes away the heat. The lower end of the heat dissipation slot 6 has a low temperature and high air density, while the upper end of the heat dissipation slot 6 has a high temperature and low air density. Therefore, the air flows autonomously from bottom to top, and the heat dissipation effect of the heat dissipation slot 6 is better exerted. The provision of two or more first inclined grooves 5 can increase the heat dissipation surface and further ensure the release of the absorbed energy. In this embodiment, the angle a is selected to be 75° and the inclined angle b is 45°. According to a specific optical principle, after the laser beam output by the lens H contacts the inclined incident surface 2, it can complete up to 30 reflections in the first inclined groove 5, and due to the design of the inclined angle c of 80°, the energy absorption rate of the last 20 reflections of the laser beam is significantly increased, ensuring that the energy absorbing body completely absorbs the energy of the laser beam.

[0054] In this embodiment, the high energy absorption body can be made of aluminum alloy material, specifically black aluminum alloy material, and the heat insulation protection cover 1 can be made of stainless steel material.

[0055] Figure 4, Figure 5 The number of the first inclined grooves 5 is four, but is not limited to four, and a number of them can be set according to specific needs.

[0056] In this embodiment, the first end surface 3 is provided with the inclined incident surface 2, which can be understood as the first end surface 3 is provided with the inclined incident surface 2, that is, the first end surface 3 includes a vertical end surface and the inclined incident surface 2. Figure 1 The part of the first end surface 3 shown, that is, the part of the vertical end surface, is covered by the end surface of the heat insulation protection cover 1 close to the lens. It is also possible to select that the first end surface 3 only includes the inclined incident surface 2, that is, the first end surface 3 coincides with the inclined incident surface 2.

[0057] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A passive heat dissipation mechanism for absorbing laser energy, characterized in that: include: A heat-insulating protective cover, wherein the outer wall of the heat-insulating protective cover is provided with a plurality of heat dissipation slots; A high-energy absorbing body, the high-energy absorbing body is located on the inner side of the heat-insulating protective cover, an end face of the high-energy absorbing body facing the direction of laser beam emission is a first end face, the bottom face of the high-energy absorbing body is a second end face, the first end face is provided with an inclined incident face; along the direction of laser beam emission, the inclined incident face is arranged to be inclined downward, wherein the upper end of the inclined incident face is arranged on the first end face, and the lower end of the inclined incident face is arranged on the second end face; The inclined incident surface is provided with at least two first inclined grooves, and the bottom surfaces of the first inclined grooves form an angle a with the inclined incident surface.

2. The passive heat dissipation mechanism for absorbing laser energy according to claim 1, characterized in that: The angle a has a value range of 15° to 85°.

3. The passive heat dissipation mechanism for absorbing laser energy according to claim 2, characterized in that: The angle a is 75°.

4. The passive heat dissipation mechanism for absorbing laser energy according to claim 1, characterized in that: An inclination angle b is formed between the inclined incident surface and the horizontal plane where the bottom surface of the high-energy absorbing body is located; The inclination angle b ranges from 30° to 60°.

5. The passive heat dissipation mechanism for absorbing laser energy according to claim 4, characterized in that: The inclination angle b is 45°.

6. The passive heat dissipation mechanism for absorbing laser energy according to claim 1, characterized in that: The right side wall of the first inclined groove and the bottom wall of the first inclined groove form an inclined angle c, and the range of the inclined angle c is 45° to 100°.

7. The passive heat dissipation mechanism for absorbing laser energy according to claim 6, characterized in that: The inclination angle c is 80°.

8. The passive heat dissipation mechanism for absorbing laser energy according to claim 1, characterized in that: The high energy absorbing body is located on the inner side of the heat insulation protection cover, and the high energy absorbing body is detachably connected to the heat insulation protection cover.

9. The passive heat dissipation mechanism for absorbing laser energy according to claim 1, characterized in that: The heat dissipation slots are arranged vertically.

10. The passive heat dissipation mechanism for absorbing laser energy according to claim 1, characterized in that: The inclined incident surface is provided with at least two second inclined grooves; A second inclined groove is disposed on the lower side of each of the first inclined grooves, and the top of the second inclined groove is communicated with the bottom of the first inclined groove.

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