Air curtain dustproof laser cleaning head

Abstract

The utility model relates to an air curtain dustproof laser cleaning head which comprises a cleaning head body, a light path channel is formed in the cleaning head body, one end of the light path channel is a laser inlet, the other end of the light path channel is a laser outlet, and a protection lens is arranged on the light path channel located on the inner side of the laser outlet. A blowing channel is arranged on the cleaning head main body, the air inlet end of the blowing channel is provided with an air pipe joint used for being connected with an air blowing device, the wall surface of the laser outlet is provided with a blowing port, the blowing port is communicated with the blowing channel, and an air curtain which is blown out from the blowing port and flows towards the outer side of the laser outlet is formed in the wall surface of the laser outlet. Dust close to the laser outlet is blown away from the laser outlet through the air curtain blown out of the air blowing port, so that the dust can be prevented from being attached to the protective lens, and the problem that the protective lens is locally cracked due to high temperature when the laser burns the dust on the protective lens is solved.

Description

Technical Field

[0001] The present application relates to the field of laser cleaning technology, and in particular to an air curtain dustproof laser cleaning head. Background Art

[0002] Laser cleaning technology uses a high-energy laser beam to irradiate the surface of the workpiece, causing dirt, rust or coating on the surface to evaporate or peel off instantly, thereby effectively removing the surface attachments or surface coatings of the workpiece. Laser cleaning machines generally use a handheld laser cleaning head to emit laser light for flexible operation. The laser emission end of the laser cleaning head is equipped with a protective lens to close the optical path, thereby preventing dust from contaminating the optical lens in the optical path. During the cleaning process, the laser cleaning head is close to the surface of the workpiece, and dust easily adheres to the protective lens. When the laser passes through the protective lens, it will burn the dust on the protective lens, causing the protective lens to crack due to local high temperature. Utility Model Content

[0003] Based on this, the present application provides an air curtain dustproof laser cleaning head, which forms an air curtain on the outside of the protective lens to blow away the dust.

[0004] To achieve the above purpose, the technical solution adopted in this application is as follows:

[0005] An air curtain dustproof laser cleaning head comprises a cleaning head body, an optical path channel is arranged on the cleaning head body, one end of the optical path channel is a laser inlet and the other end is a laser outlet, a protective lens is arranged on the optical path channel located on the inner side of the laser outlet, an air blowing channel is arranged on the cleaning head body, an air pipe joint for connecting a blowing device is arranged at the air inlet end of the air blowing channel, an air blowing port is arranged on the wall surface of the laser outlet, the air blowing port is connected to the air blowing channel, and an air curtain flowing to the outside of the laser outlet is blown out from the air blowing port.

[0006] Furthermore, the blowing port is in a strip-shaped gap structure, and the strip-shaped gap structure has two flow-guiding inclined surfaces arranged in parallel and at intervals, and the flow-guiding inclined surfaces are inclined toward the outside of the laser outlet.

[0007] Furthermore, it also includes an air blowing pipe, the air inlet end of the air blowing pipe is installed on the cleaning head body and connected to the air blowing channel, and the air outlet end of the air blowing pipe is provided with a fan-shaped nozzle.

[0008] Furthermore, it also includes a protective cover, which is hingedly installed at the laser outlet, and the protective cover can be switched between two states: blocking the laser outlet and leaving the laser outlet.

[0009] Furthermore, it also includes a red light emitter, which is installed on the cleaning head body and close to the laser outlet, and the red light emission direction of the red light emitter is parallel to the axial direction of the laser outlet.

[0010] Furthermore, a collimator, a focusing mirror and a reflector are provided in the optical path of the cleaning head body. After the laser beam enters the optical path from the laser inlet, it first passes through the collimator, then passes through the focusing mirror, and then irradiates the reflector, and then is reflected by the reflector to the protective lens, passes through the protective lens and then goes out from the laser outlet; the reflector is connected to a high-frequency motor, and the high-frequency motor is used to drive the reflector to move.

[0011] The laser cleaning head of the present application connects the air pipe joint to the blowing device during laser cleaning, and the blowing device blows air into the blowing channel. The gas flows along the blowing channel and is finally blown out from the blowing port on the wall of the laser outlet. The blown air curtain flows to the outside of the laser outlet, thereby blowing dust close to the laser outlet away from the laser outlet, thereby preventing dust from adhering to the protective lens, and solving the problem of the laser burning the dust on the protective lens and causing the protective lens to crack due to local high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 This is a schematic cross-sectional structure diagram of an air curtain dustproof laser cleaning head according to an embodiment of the present application.

[0014] Figure 2 This is a schematic diagram of the external structure of an air curtain dustproof laser cleaning head according to an embodiment of the present application.

[0015] Figure 3 This is a schematic diagram of the structure of the air blowing port in an air curtain dustproof laser cleaning head according to an embodiment of the present application.

[0016] Figure 4 This is a schematic diagram of the structure of the air blowing port in an air curtain dustproof laser cleaning head according to another embodiment of the present application.

[0017] Description of reference numerals:

[0018] 10. Cleaning head body; 11. Optical path channel; 111. Laser inlet; 112. Laser outlet; 12. Protective lens; 13. Air blowing channel; 131. Air pipe joint; 14. Air blowing port; 141. Guide slope; 15. Air blowing pipe; 151. Fan-shaped nozzle; 16. Protective cover; 17. Red light emitter; 181. Collimator; 182. Focusing lens; 183. Reflector; 184. High-frequency motor. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below with reference to the accompanying drawings. The present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0020] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0022] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] refer to Figure 1 and Figure 2 The present application provides an air curtain dustproof laser cleaning head, including a cleaning head body 10, an optical path channel 11 is provided on the cleaning head body 10, one end of the optical path channel 11 is a laser inlet 111 and the other end is a laser outlet 112, a protective lens 12 is provided on the optical path channel 11 located on the inner side of the laser outlet 112, an air blowing channel 13 is provided on the cleaning head body 10, an air pipe joint 131 for connecting a blowing device is provided at the air inlet end of the air blowing channel 13, an air blowing port 14 is provided on the wall surface of the laser outlet 112, the air blowing port 14 is connected to the air blowing channel 13, and an air curtain flowing to the outside of the laser outlet 112 is blown out from the air blowing port 14.

[0025] The laser cleaning head of the present application connects the air pipe joint 131 to the blowing device during laser cleaning, and the blowing device blows air into the blowing channel 13. The gas flows along the blowing channel 13 and is finally blown out from the blowing port 14 on the wall of the laser outlet 112. The blown air curtain flows to the outside of the laser outlet 112, thereby blowing dust near the laser outlet 112 away from the laser outlet 112, thereby preventing dust from adhering to the protective lens 12, and solving the problem of the laser burning the dust on the protective lens 12 and causing the protective lens 12 to crack due to local high temperature.

[0026] In one embodiment, reference Figure 1 and Figure 3 The air outlet 14 is a strip-shaped gap structure, and the strip-shaped gap structure has two parallel and spaced guide slopes 141, which are inclined toward the outside of the laser outlet 112. In this way, the airflow blown out from the air outlet 14 forms an air curtain with a predetermined width and direction. By reasonably setting the size of the strip-shaped gap structure, the air curtain can completely close the laser outlet 112, and the air curtain has good fluidity to carry dust away.

[0027] In another embodiment, reference Figure 4The air outlet 14 can also be configured as a plurality of through holes evenly spaced along the edge of the laser outlet 112, with the axial direction of the through holes parallel to the axial direction of the laser outlet 112. The airflow blown out of the through holes drives the surrounding air away from the laser outlet 112 to form an air curtain away from the laser outlet 112 along the axial direction.

[0028] In one embodiment, reference Figure 1 and Figure 2 The air curtain dustproof laser cleaning head of the present application further includes an air blowing pipe 15, the air inlet end of the air blowing pipe 15 is mounted on the cleaning head body 10 and connected to the air blowing channel 13, and the air outlet end of the air blowing pipe 15 is provided with a fan-shaped nozzle 151. The gas in the air blowing channel 13 can also be blown out from the air blowing pipe 15, and the fan-shaped nozzle 151 of the air blowing pipe 15 can be manually aimed at a dusty position to quickly blow away the dust.

[0029] In one embodiment, reference Figure 1 and Figure 2 The air curtain dustproof laser cleaning head of the present application further includes a protective cover 16, which is hingedly mounted at the laser outlet 112, and can switch between blocking the laser outlet 112 and leaving the laser outlet 112. With such a configuration, the protective cover 16 leaves the laser outlet 112 during laser cleaning, and blocks the laser outlet 112 after laser cleaning is completed, thereby preventing dust from falling on the protective lens 12 when the cleaning head is not in use.

[0030] In one embodiment, reference Figure 1 and Figure 2 The air curtain dustproof laser cleaning head of the present application further includes a red light emitter 17, which is mounted on the cleaning head body 10 and close to the laser outlet 112, and the red light emission direction of the red light emitter 17 is parallel to the axial direction of the laser outlet 112. The laser focal length can be adjusted by emitting red light from the red light emitter 17.

[0031] In one embodiment, reference Figure 1In the optical path channel 11 of the cleaning head body 10, a collimator 181, a focusing mirror 182 and a reflector 183 are provided. After the laser beam enters the optical path channel 11 from the laser inlet 111, it first passes through the collimator 181, then passes through the focusing mirror 182, and then irradiates the reflector 183, and then is reflected by the reflector 183 to the protective lens 12, and then passes through the protective lens 12 and exits from the laser outlet 112. The laser beam passes through the collimator 181 to ensure that the laser beam is straight, and the laser beam passes through the focusing mirror 182 to focus the laser beam. The laser beam is changed in direction by the reflector 183 and then emitted from the laser outlet 112. The reflector 183 is connected to a high-frequency motor 184, and the high-frequency motor 184 is used to drive the reflector 183 to move so that the emitted laser beam has a motion trajectory. The rapid movement of the laser beam along the motion trajectory can make the laser beam act on a small area on the surface of the workpiece at the same time.

[0032] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The above-described embodiments only express several implementation methods of the present application and should not be construed as limiting the scope of the patent application. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be subject to the attached claims.

Claims

1. An air curtain dustproof laser cleaning head, comprising a cleaning head body, wherein an optical path is provided on the cleaning head body, wherein one end of the optical path is a laser inlet and the other end is a laser outlet, and a protective lens is provided on the optical path located on the inner side of the laser outlet, wherein: An air blowing channel is provided on the cleaning head body, and an air pipe joint for connecting a blowing device is provided at the air inlet end of the air blowing channel. An air blowing port is provided on the wall surface of the laser outlet, and the air blowing port is connected to the air blowing channel, and an air curtain is blown out from the air blowing port to flow to the outside of the laser outlet.

2. The air curtain dustproof laser cleaning head according to claim 1, characterized in that: The air blowing port is in a strip-shaped gap structure, and the strip-shaped gap structure is provided with two flow guiding inclined surfaces which are arranged in parallel and spaced apart, and the flow guiding inclined surfaces are inclined toward the outer side of the laser outlet.

3. The air curtain dustproof laser cleaning head according to claim 1 or 2, characterized in that: It also includes an air blowing pipe, the air inlet end of which is installed on the cleaning head body and connected to the air blowing channel, and the air outlet end of the air blowing pipe is provided with a fan-shaped nozzle.

4. The air curtain dustproof laser cleaning head according to claim 3, characterized in that: It also includes a protective cover, which is hingedly installed at the laser outlet, and the protective cover can be switched between two states: blocking the laser outlet and leaving the laser outlet.

5. The air curtain dustproof laser cleaning head according to claim 3, characterized in that: It also includes a red light emitter, which is installed on the cleaning head body and close to the laser outlet. The red light emission direction of the red light emitter is parallel to the axial direction of the laser outlet.

6. The air curtain dustproof laser cleaning head according to claim 3, characterized in that: A collimator, a focusing mirror and a reflector are provided in the optical path of the cleaning head body. After the laser beam enters the optical path from the laser inlet, it first passes through the collimator, then passes through the focusing mirror, and then irradiates the reflector, and then is reflected by the reflector to the protective lens, passes through the protective lens and then goes out from the laser outlet; the reflector is connected to a high-frequency motor, and the high-frequency motor is used to drive the reflector to move.

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