Laser field lens with cooling structure

Abstract

The utility model discloses a laser field lens with a cooling structure, which relates to the technical field of laser accessories and specifically comprises a lens cone, a lens arranged in the lens cone and the cooling structure, the cooling structure comprises a support ring fixed at the bottom end of the lens cone, a dust blowing ring arranged at the bottom of the support ring and a protective heat conduction structure arranged on the lens cone, an air duct is arranged in the middle of an inner cavity of the supporting ring, air inlets are evenly formed in the outer side wall of the air duct, the outer side wall of the air duct is of a hollow structure, an inner cavity of the outer side wall of the air duct is filled with cooling liquid, and a refrigerator is arranged on the outer side of the inner cavity of the outer side wall of the air duct. According to the laser field lens with the cooling structure, through the arrangement of the protective heat conduction structure, the protective heat conduction structure can protect the laser field lens, so that heat absorbed by the laser field lens is reduced or avoided from the source, the use effect of the cooling structure is improved, and the service life of the lens barrel can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of laser accessories, in particular to a laser field mirror with a cooling structure. Background Art

[0002] Laser field mirrors are widely used in laser marking, laser cleaning, laser cutting, and other fields. Typically installed at the end of a laser system, they form a focal plane. By controlling the reflection angle of the X / Y galvanometer, the laser beam is focused on different areas of the focal plane, enabling various processes such as marking, welding, laser cleaning, and 3D printing. Due to the high heat generation of lasers, the laser field mirror absorbs the heat as the laser propagates within it. Excessive temperature damage can easily damage the laser field mirror, so a cooling mechanism is required.

[0003] In the related art, water cooling or air cooling channels are usually set on the side walls of the laser field mirror to use cooling water or cooling air to cool down the laser field mirror after it has heated up. However, it is impossible to protect the laser field mirror in advance to reduce or avoid the laser field mirror from absorbing heat, which affects the use effect. In addition, during the use of the laser, impurities generated when objects are subjected to laser cutting and other processes are easily adhered to the lens of the laser field mirror, which increases the heat absorption rate of the lens and is not conducive to the use of the laser field mirror. Based on this, the present application proposes a laser field mirror with a cooling structure. Utility Model Content

[0004] The utility model provides a laser field mirror with a cooling structure, which solves the problem proposed in the above background technology that the existing cooling structure is usually unable to protect the laser field mirror in advance, reduce or avoid the laser field mirror absorbing heat, affecting the use effect of the cooling structure, and impurities are easily adhered to the lens of the laser field mirror, increasing the heat absorption rate of the lens, which is not conducive to use.

[0005] The utility model provides the following technical solution: a laser field mirror with a cooling structure, comprising a lens barrel, a lens arranged in the lens barrel and a cooling structure, wherein the cooling structure comprises a support ring fixed to the bottom end of the lens barrel, a dust blowing ring arranged at the bottom of the support ring and a protective heat-conducting structure arranged on the lens barrel, an air duct is provided in the middle of the inner cavity of the support ring, an air inlet is evenly provided on the outer wall of the air duct, the outer wall of the air duct is a hollow structure, the inner cavity of the outer wall of the air duct is filled with a cooling liquid, a refrigerator is provided on the outer side of the inner cavity of the outer wall of the air duct, a hollow air spray plate is provided on the top of the air duct, and air spray holes are evenly provided on the top of the inner cavity of the hollow air spray plate, the inner cavity of the hollow air spray plate is communicated with the inner cavity of the dust blowing ring, and micro-blowers are evenly inlaid on the support ring, the air inlet end of the micro-blower is located in the inner cavity of the air duct, and the air outlet end of the micro-blower is located in the inner cavity of the hollow air spray plate;

[0006] The protective heat-conducting structure includes a heat sink wrapped around the outer wall of the lens barrel, a heat insulation pad connected to the inner wall of the lens barrel, a heat-conducting sheet connected to the inner wall of the heat insulation pad, and a reflective pad connected to the inner wall of the heat-conducting sheet. The heat-conducting sheet and the heat sink are connected through a heat-conducting column.

[0007] Preferably, the heat-conducting column is embedded in the lens barrel, and the outer surface of the heat-conducting column is wrapped with a heat-insulating ring, and the heat-conducting column and the lens barrel are separated by the heat-insulating ring.

[0008] Preferably, the cold end of the refrigerator is located in the inner cavity of the air duct, and the hot end of the refrigerator is located outside the support ring.

[0009] Preferably, two air jet holes are evenly provided in the middle of the inner side wall of the dust blowing ring, the air flow blown out of the two air jet holes spreads in the horizontal direction, and the wind curtain blown out by the dust blowing ring blocks the lens.

[0010] Preferably, a heat-conducting ring is embedded in the inner side of the inner cavity of the outer wall of the air duct, and a dust filter is provided in the inner cavity of the air inlet.

[0011] Preferably, silencer nozzles are provided in both the first and second air ejection holes.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The laser field mirror with a cooling structure is provided with a protective heat-conducting structure, which can protect the laser field mirror, reduce or avoid the laser field mirror absorbing heat from the source, improve the use effect of the cooling structure, and extend the service life of the lens barrel; through the provision of a dust blowing plate, the air curtain blown out by the dust blowing ring blocks the lens, reducing the probability of impurities adhering to the lens, and can increase the flow rate of air around the lens to achieve cooling of the lens.

[0014] 2. The laser field mirror with a cooling structure can cool the air in the air duct through the setting of the support ring and the refrigerator, thereby improving the use effect of the cooling structure; through the setting of the dust filter, the dust filter can intercept dust in the air, preventing the air duct from being blocked by dust, and facilitating the use of the cooling structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the structure of the utility model;

[0016] Figure 2 For the utility model structure Figure 1 Bottom schematic diagram;

[0017] Figure 3 This is a cross-sectional schematic diagram of the lens barrel structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the connection between the heat conducting sheet and the heat sink of the utility model structure;

[0019] Figure 5 This is a cross-sectional schematic diagram of the structural support ring of the utility model.

[0020] In the figure: 1. Lens barrel; 2. Support ring; 3. Lens; 4. Dust blowing ring; 5. Micro blower; 6. Refrigerator; 7. Air inlet; 8. Air nozzle 1; 9. Air nozzle 2; 10. Heat sink; 11. Air duct; 12. Thermal insulation pad; 13. Heat conducting sheet; 14. Reflection pad; 15. Thermal conductive column; 16. Thermal insulation ring. DETAILED DESCRIPTION

[0021] 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.

[0022] The utility model provides a laser field mirror with a cooling structure, comprising a lens barrel 1, a lens 3 arranged in the lens barrel 1, and a cooling structure. The cooling structure comprises a support ring 2 fixed to the bottom end of the lens barrel 1, a dust blowing ring 4 arranged at the bottom of the support ring 2, and a protective heat-conducting structure arranged on the lens barrel 1. The protective heat-conducting structure comprises a heat sink 10 wrapped around the outer wall of the lens barrel 1, a heat insulating pad 12 connected to the inner wall of the lens barrel 1, a heat-conducting sheet 13 connected to the inner wall of the heat insulating pad 12, and a reflective pad 14 connected to the inner wall of the heat-conducting sheet 13. The heat-conducting sheet 13 is connected to the heat sink 10 via a heat-conducting column 15. The heat-conducting column 15 is embedded in the lens barrel 1, and the outer surface of the heat-conducting column 15 is wrapped with a heat-conducting ring 16. The heat-conducting column 15 is separated from the lens barrel 1 by the heat-conducting ring 16.

[0023] By providing a protective heat-conducting structure, the reflective pad 14 can reflect heat, and the heat-conducting sheet 13 can transfer the heat that passes through the reflective pad 14 to the heat sink 10 via the heat-conducting column 15. During the heat conduction process, the heat-insulating ring 16 and the heat-insulating pad can intercept the heat, reducing the amount of heat absorbed by the lens barrel 1. In addition, the heat sink 10 can accelerate the removal of heat absorbed by the lens barrel 1. When the laser field mirror is in use, the protective heat-conducting structure can protect the laser field mirror, reducing or preventing heat absorption by the laser field mirror at the source, improving the effectiveness of the cooling structure, and extending the service life of the lens barrel 1.

[0024] An air duct 11 is provided in the middle of the inner cavity of the support ring 2, and air inlets 7 are evenly provided on the outer wall of the air duct 11. A dust filter is provided in the inner cavity of the air inlet 7. The outside air can enter the air duct 11, and the dust filter can intercept the dust in the air to prevent the air duct 11 from being blocked by dust.

[0025] The outer wall of the air duct 11 is a hollow structure, and the inner cavity of the outer wall of the air duct 11 is filled with a cooling liquid, such as water. A refrigerator 6 is provided on the outside of the inner cavity of the outer wall of the air duct 11. The cold end of the refrigerator 6 is located in the inner cavity of the air duct 11, and the hot end of the refrigerator 6 is located outside the support ring 2. The refrigerator 6 can be a semiconductor refrigerator. The inner side of the inner cavity of the outer wall of the air duct 11 is inlaid with a heat-conducting ring, and the material of the heat-conducting ring can be metallic copper. Through the setting of the heat-conducting ring, the heat transfer can be accelerated, which facilitates the cooling liquid to cool the air in the air duct 11.

[0026] A hollow air blower plate is provided at the top of the air duct 11, and air blower holes 8 are evenly provided at the top of the inner cavity of the hollow air blower plate. The air flow ejected from the air blower hole 8 can cool the heat sink 10. The dust blowing ring 4 is a hollow structure. The inner cavity of the hollow air blower plate is connected to the inner cavity of the dust blowing ring 4. Air blower holes 9 are evenly provided in the middle of the inner wall of the dust blowing ring 4. Silencers are provided in the air blower hole 18 and the air blower hole 29 to reduce the noise when the cooling structure is in use. The air flow blown out from the air blower hole 29 diffuses in the horizontal direction, and the wind curtain blown out by the dust blowing ring 4 blocks the lens 3, reduces the probability of impurities adhering to the lens 3, and can increase the flow rate of the air around the lens 3, which is convenient for cooling the lens 3.

[0027] Micro-blower 5 is evenly inlaid on the support ring 2. The air inlet end of the micro-blower 5 is located in the inner cavity of the air duct 11, and the air outlet end of the micro-blower 5 is located in the inner cavity of the hollow air jet plate. Through the setting of the micro-blower 5, the operation of the micro-blower 5 can blow the cooled air in the air duct 11 into the inner cavity of the hollow air jet plate and the inner cavity of the dust blowing ring 4, so that the silencer nozzle can spray cooled air to cool the laser field mirror.

[0028] In some embodiments of the present application, the model of the micro blower 5 is the Nanfeng 1804 mini blower, the materials of the heat sink 10, the heat conducting plate 13 and the heat conducting column 15 are all graphene, and the materials of the thermal insulation pad 12, the thermal insulation ring 16 and the reflective pad 14 can all be selected according to needs and are not limited here.

[0029] The electrical components involved in this application are all existing technologies. Those skilled in the art are familiar with their connection methods. Through these people, all the electrical components in this application are connected to their corresponding power supplies through wires, and according to actual conditions, appropriate controllers are selected to meet control requirements. The specific connections and control sequences are described below. The electrical connections between the electrical components are completed in a sequential working order. The detailed connection methods are well known in the art. The following mainly introduces the working principles and processes, and no further explanation of electrical control is given.

[0030] To sum up: when the laser field mirror with a cooling structure is in use, the micro-blower 5 and the refrigerator 6 are both working, and the refrigerator 6 can cool the cooling liquid, and the cooling liquid can exchange heat with the air in the air duct to reduce the temperature of the air in the air duct 11. The micro-blower 5 can blow the cooled air in the air duct 11 into the inner cavity of the hollow air jet plate and the inner cavity of the dust blowing ring 4. The air in the hollow air jet plate is ejected through the silencer nozzle installed in the air jet hole 8. The ejected airflow exchanges heat with the heat sink 10, accelerating the heat dissipation speed of the heat sink 10. When the heat dissipation speed of the heat sink 10 increases, the cooling speed of the lens barrel 1 can be increased, which is convenient for the normal operation of the lens barrel 1. In addition, the coordinated use of the reflecting pad 14, the thermal insulation pad 12 and the thermal insulation ring 16 can protect the laser field mirror, reduce or avoid the laser field mirror absorbing heat from the source, improve the use effect of the cooling structure, and extend the service life of the lens barrel 1. The air in the inner cavity of the dust blowing ring 4 is ejected through a silencer nozzle installed in the air ejection hole 2 9. The wind curtain ejected by the dust blowing ring 4 is located below the lens 3, which can intercept impurities and reduce the probability of impurities adhering to the lens 3, thereby reducing the probability of the lens 3 heating up due to impurities. The wind curtain can also cool the lens 3, facilitating the use of the laser field mirror.

[0031] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology and will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A laser field mirror with a cooling structure, comprising a lens barrel (1), a lens (3) arranged in the lens barrel (1), and a cooling structure, characterized in that: The cooling structure comprises a support ring (2) fixed to the bottom end of the lens barrel (1), a dust blowing ring (4) arranged at the bottom of the support ring (2), and a protective heat-conducting structure arranged on the lens barrel (1); an air duct (11) is provided in the middle of the inner cavity of the support ring (2); air inlets (7) are evenly provided on the outer wall of the air duct (11); the outer wall of the air duct (11) is a hollow structure; the inner cavity of the outer wall of the air duct (11) is filled with a cooling liquid; the air duct (11) A cooler (6) is provided on the outside of the inner cavity of the outer wall, a hollow air blower plate is provided on the top of the air duct (11), and air blower holes (8) are evenly provided on the top of the inner cavity of the hollow air blower plate, the inner cavity of the hollow air blower plate is connected to the inner cavity of the dust blowing ring (4), and micro blowers (5) are evenly inlaid on the support ring (2), the air inlet end of the micro blower (5) is located in the inner cavity of the air duct (11), and the air outlet end of the micro blower (5) is located in the inner cavity of the hollow air blower plate; The protective heat-conducting structure comprises a heat sink (10) wrapped around the outer wall of the lens barrel (1), a heat-insulating pad (12) connected to the inner wall of the lens barrel (1), a heat-conducting sheet (13) connected to the inner wall of the heat-insulating pad (12), and a reflective pad (14) connected to the inner wall of the heat-conducting sheet (13), wherein the heat-conducting sheet (13) is connected to the heat sink (10) via a heat-conducting column (15).

2. The laser field mirror with a cooling structure according to claim 1, characterized in that: The heat-conducting column (15) is embedded in the lens barrel (1), and the outer surface of the heat-conducting column (15) is wrapped with a heat-insulating ring (16), and the heat-conducting column (15) and the lens barrel (1) are separated by the heat-insulating ring (16).

3. The laser field mirror with a cooling structure according to claim 1, characterized in that: The cold end of the refrigerator (6) is located in the inner cavity of the air duct (11), and the hot end of the refrigerator (6) is located outside the support ring (2).

4. The laser field mirror with a cooling structure according to claim 1, characterized in that: The middle portion of the inner wall of the dust blowing ring (4) is evenly provided with two air jet holes (9), the air flow blown out of the two air jet holes (9) is diffused in the horizontal direction, and the wind curtain blown out by the dust blowing ring (4) shields the lens (3).

5. The laser field mirror with a cooling structure according to claim 1, characterized in that: A heat-conducting ring is embedded in the inner side of the inner cavity of the outer wall of the air duct (11), and a dust filter is provided in the inner cavity of the air inlet (7).

6. The laser field mirror with a cooling structure according to claim 4, characterized in that: A silencer nozzle is provided in the air jet hole 1 (8) and the air jet hole 2 (9).

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