Laser cleaning head with dustproof cover

Abstract

The utility model relates to a laser cleaning head with a dust cover, which comprises a laser head shell, a dust cover, a dust cover and a laser cleaning head, the light path assembly is used for adjusting the laser beam entering the light path hole channel and enabling the laser beam to be emitted from the laser emitting port; the protection lens assembly is arranged on the inner side of the laser emitting port; the dustproof cover is mounted on the laser head shell in a hinged manner and has an opening state in which the laser emitting port is not covered and a closing state in which the laser emitting port is covered; the laser switch circuit is used for controlling the laser to be turned on and turned off, a first switch and a second switch are arranged on the laser switch circuit in series, the first switch is a manual switch, the second switch is a contact switch, and the contact switch is triggered to be turned on when the dustproof cover is in an open state. By arranging the dustproof cover, dust can be prevented from falling on the protection lens when the cleaning head is not used, and potential safety hazards caused by the fact that a laser beam hits the dustproof cover can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of laser cleaning, and in particular to a laser cleaning head with a dust cover. Background Art

[0002] Laser cleaning technology uses a high-energy laser beam to irradiate the surface of the workpiece, causing the 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. The laser cleaning machine generally uses a handheld laser cleaning head to emit laser light for flexible operation. The laser cleaning head has a laser entry end, an optical path component and a laser emission end. The laser enters from the laser entry end and is then emitted from the laser emission end after adjustment by the optical path component. The laser emission end is usually provided with a protective lens to prevent dust from contaminating the optical path component. Since the laser needs to pass through the protective lens, if there is dust attached to the protective lens, the laser burning the dust will cause the protective lens to generate local high temperature, which may cause the lens to burn. Utility Model Content

[0003] Based on this, the present application provides a laser cleaning head with a dust cover, which protects the lens by covering it when the cleaning head is not in use to prevent dust from falling into the protective lens.

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

[0005] A laser cleaning head with a dustproof cover, comprising:

[0006] A laser head housing is provided with an optical path channel inside, one end of the optical path channel is a laser injection port, and the other end is a laser emission port, the laser injection port is used to connect a laser, and the laser beam emitted by the laser enters the optical path channel from the laser injection port;

[0007] An optical path component, disposed in the laser head housing, for adjusting the laser beam entering the optical path channel from the laser injection port and causing the laser beam to be emitted from the laser emission port;

[0008] A protective lens assembly is arranged inside the laser emission port;

[0009] A dust cover is provided at the laser emission port, the dust cover is hingedly mounted on the laser head housing and has an open state and a closed state. In the open state, the dust cover does not cover the laser emission port, and in the closed state, the dust cover covers the laser emission port;

[0010] A laser switch circuit is used to control the opening and closing of the laser. A first switch and a second switch are arranged in series on the laser switch circuit. The first switch and the second switch are arranged on the laser head housing. The first switch is a manual switch and the second switch is a contact switch. The dust cover triggers the contact switch to turn on when in the open state.

[0011] Furthermore, the dust cover is provided with a rotating shaft, a first snap-fit ​​structure and a second snap-fit ​​structure, and both ends of the rotating shaft are rotatably mounted on the laser head housing so that the dust cover can be flipped relative to the laser head housing. When the dust cover is in the open state, the first snap-fit ​​structure is snapped onto the contact switch to trigger the contact switch to turn on and keep the dust cover in the open state. When the dust cover is in the closed state, the second snap-fit ​​structure is snapped onto the laser head housing to keep the dust cover in the closed state.

[0012] Furthermore, a sealing rubber ring is provided on the dust cover, and the sealing rubber ring is matched with the edge of the laser emission port. When the dust cover is in the closed state, the sealing rubber ring is tightly attached to the edge of the laser emission port.

[0013] Furthermore, the protective lens assembly includes a drawer-type carrier, a pressure ring and a protective lens. The drawer-type carrier is provided with a through hole, and the protective lens is installed on the through hole through the pressure ring. The drawer-type carrier can be detachably inserted into the laser head housing, and the drawer-type carrier is fixedly connected to the laser head housing by screws.

[0014] Furthermore, two protective lens assemblies are provided.

[0015] Furthermore, the optical path channel includes an X-axis channel and a Y-axis channel, the X-axis channel is vertically connected to the Y-axis channel, the laser input port is arranged on the X-axis channel, and the laser output port is arranged on the Y-axis channel; the optical path component includes a collimator, a focusing mirror, an X-axis reflector and a Y-axis reflector, the collimator and the focusing mirror are arranged on the X-axis channel, the X-axis reflector and the Y-axis reflector are arranged on the Y-axis channel, the X-axis reflector is connected to a first drive motor, and the Y-axis reflector is connected to a second drive motor; after the laser beam enters the optical path channel, it passes through the collimator and the focusing mirror in turn, and then irradiates the X-axis reflector, is reflected by the X-axis reflector to the Y-axis reflector, and is then reflected by the Y-axis reflector to the laser output port.

[0016] Furthermore, an infrared emitter is included, and the infrared emitter is arranged on the laser head housing and located on one side of the laser emission port.

[0017] The laser cleaning head with dust cover of the present application is provided with a dust cover on the laser emission port, and the dust cover has an open state and a closed state. The dust cover is in the open state when performing laser cleaning, and in the closed state when not in use, so that dust can be prevented from falling on the protective lens when the cleaning head is not in use. A first switch and a second switch are arranged in series on the laser switch circuit, and the dust cover triggers the second switch to conduct when in the open state. At this time, the first switch can be manually turned on to start the laser to emit a laser beam. When the dust cover is still in the closed state, since the second switch is not turned on, even if the first switch is turned on, the laser will not emit a laser beam. In this way, the laser can be prevented from being started when the dust cover still covers the laser emission port, and the laser beam can be prevented from hitting the dust cover and causing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 It is a schematic cross-sectional structure diagram of a laser cleaning head according to an embodiment of the present application.

[0020] Figure 2 This is a schematic diagram of the external structure of a laser cleaning head according to an embodiment of the present application.

[0021] Figure 3 Schematic diagram of the structure of a dust cover in a laser cleaning head according to an embodiment of the present application.

[0022] Figure 4 This is a schematic structural diagram of a protective lens assembly in a laser cleaning head according to an embodiment of the present application.

[0023] Description of reference numerals:

[0024] 10. Laser head housing; 11. Optical path hole; 111. X-axis hole; 112. Y-axis hole; 113. Laser input port; 114. Laser output port; 20. Optical path assembly; 21. Collimator; 22. Focusing mirror; 23. X-axis reflector; 24. Y-axis reflector; 25. First drive motor; 26. Second drive motor; 30. Protective lens assembly; 31. Protective lens; 32. Drawer-type carrier; 33. Pressing ring; 34. Screw; 40. Dust cover; 41. Rotating shaft; 42. First buckle structure; 43. Second buckle structure; 44. Sealing rubber ring; 50. Laser switch circuit; 51. First switch; 52. Second switch; 60. Infrared transmitter. DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] refer to Figure 1 and Figure 2 The present application provides a laser cleaning head with a dust cover, including a laser head housing 10, an optical path component 20, a protective lens component 30, a dust cover 40 and a laser switch circuit 50.

[0031] An optical path channel 11 is provided inside the laser head housing 10. One end of the optical path channel 11 is a laser injection port 113, and the other end is a laser emission port 114. The laser injection port 113 is used to connect a laser, and the laser beam emitted by the laser enters the optical path channel 11 from the laser injection port 113. The optical path component 20 is arranged in the laser head housing 10, and is used to adjust the laser beam entering the optical path channel 11 from the laser injection port 113 and to make the laser beam be emitted from the laser emission port 114. The protective lens component 30 is installed on the laser head housing 10, and the protective lens 31 on the protective lens component 30 is arranged on the inner side of the laser emission port 114. The dust cover 40 is arranged at the laser emission port 114, and the dust cover 40 is hingedly installed on the laser head housing 10 and has an open state and a closed state. In the open state, the dust cover 40 does not cover the laser emission port 114, and in the closed state, the dust cover 40 covers the laser emission port 114. The laser switch circuit 50 is used to control the opening and closing of the laser. A first switch 51 and a second switch 52 are arranged in parallel on the laser switch circuit 50. The first switch 51 and the second switch 52 are arranged on the laser head housing 10. The first switch 51 is a manual switch, and the second switch 52 is a contact switch 52. When the dust cover 40 is in the open state, the contact switch 52 is triggered to turn on.

[0032] The laser cleaning head with dust cover of the present application is provided with a dust cover 40 on the laser emission port 114. The dust cover 40 has an open state and a closed state. The dust cover 40 is in the open state when laser cleaning is performed, and in the closed state when not in use. In this way, dust can be prevented from falling on the protective lens 31 when the cleaning head is not in use. A first switch 51 and a second switch 52 are arranged in series on the laser switch circuit 50. When the dust cover 40 is in the open state, the second switch 52 is triggered to turn on. At this time, the first switch 51 can be manually turned on to start the laser to emit a laser beam. When the dust cover 40 is still in the closed state, since the second switch 52 is not turned on, even if the first switch 51 is turned on, the laser will not emit a laser beam. In this way, the laser can be prevented from being started when the dust cover 40 still covers the laser emission port 114, and the laser beam is prevented from hitting the dust cover 40 and causing safety hazards.

[0033] refer to Figure 3In one embodiment, a rotating shaft 41, a first snap-fit ​​structure 42 and a second snap-fit ​​structure 43 are provided on the dust cover 40. Both ends of the rotating shaft 41 are rotatably mounted on the laser head housing 10 so that the dust cover 40 can be flipped relative to the laser head housing 10. When the dust cover 40 is in an open state, the first snap-fit ​​structure 42 is snapped onto the contact switch 52 to trigger the contact switch to be turned on and keep the dust cover 40 in an open state. When the dust cover 40 is in a closed state, the second snap-fit ​​structure 43 is snapped onto the laser head housing 10 to keep the dust cover 40 in a closed state.

[0034] refer to Figure 3 In one embodiment, a sealing rubber ring 44 is provided on the dust cover 40, and the sealing rubber ring 44 is matched with the edge of the laser emission port 114. When the dust cover 40 is in a closed state, the sealing rubber ring 44 is close to the edge of the laser emission port 114. In this way, the sealing performance of the dust cover 40 to the laser emission port 114 can be enhanced.

[0035] refer to Figure 4 In one embodiment, the protective lens assembly 30 includes a drawer-type carrier plate 32, a pressure ring 33 and a protective lens 31. The drawer-type carrier plate 32 is provided with a through hole, and the protective lens 31 is installed on the through hole through the pressure ring 33. The drawer-type carrier plate 32 is detachably plugged into the laser head housing 10, and the drawer-type carrier plate 32 is fixedly connected to the laser head housing 10 by screws 34. In this way, the protective lens 31 can be conveniently taken in and out of the laser cleaning head.

[0036] Two protective lens assemblies 30 can be provided to form double-layer protection to enhance the sealing of the optical path channel 11 .

[0037] refer to Figure 1In one embodiment, the optical path channel 11 is an L-shaped channel. Specifically, the optical path channel 11 includes an X-axis channel 111 and a Y-axis channel 112. The X-axis channel 111 is vertically connected to the Y-axis channel 112. The laser injection port 113 is arranged on the X-axis channel 111, and the laser emission port 114 is arranged on the Y-axis channel 112. Correspondingly, the optical path component 20 includes a collimator 21, a focusing lens 22, an X-axis reflector 23, and a Y-axis reflector 24. The collimator 21 and the focusing lens 22 are arranged on the X-axis channel 111, the X-axis reflector 23 and the Y-axis reflector 24 are arranged on the Y-axis channel 112, the X-axis reflector 23 is connected to a first drive motor 25, and the Y-axis reflector 24 is connected to a second drive motor 26. After the laser beam enters the optical path channel 11, it passes through the collimator 21 and the focusing mirror 22, and then irradiates the X-axis reflector 23, is reflected by the X-axis reflector 23 to the Y-axis reflector 24, and then is reflected by the Y-axis reflector 24 to the laser emission port 114. In this way, the collimator 21 is used to ensure that the laser beam is straight, the focusing mirror 22 is used to focus the laser beam, and the X-axis reflector 23 and the Y-axis reflector 24 are used to reflect and emit the light. Both the X-axis reflector 23 and the Y-axis reflector 24 are connected to a driving motor so that the emitted laser beam has a motion trajectory.

[0038] In other embodiments, only a single reflector may be provided, and the laser beam passes through the collimating mirror 21 and the focusing mirror 22 in sequence and then irradiates the reflector, and is then reflected by the single reflector to the laser emission port 114 .

[0039] In other embodiments, the optical path channel 11 may also be a straight channel, and accordingly, the optical path component 20 does not need to be provided with a reflector, and the optical path component 20 includes a collimator 21 and a focusing lens 22, wherein the collimator 21 is closer to the laser injection port 113, and the focusing lens 22 is closer to the laser emission port 114. The laser beam is directly emitted after being adjusted by the collimator 21 and the focusing lens 22.

[0040] The collimating lens 21 and the focusing lens 22 can be installed in the same manner as the protective lens 31 described above, and can be detachably plugged into the laser head housing 10 through a drawer-type carrier plate 32 .

[0041] In one embodiment, an infrared emitter 60 is disposed on one side of the laser emission port 114 of the laser head housing 10 . The infrared emitter 60 emits red light along the emission direction of the laser beam to adjust the laser focal length.

[0042] 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.

[0043] 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. A laser cleaning head with a dust cover, characterized in that: include: A laser head housing is provided with an optical path channel inside, one end of the optical path channel is a laser injection port, and the other end is a laser emission port, the laser injection port is used to connect a laser, and the laser beam emitted by the laser enters the optical path channel from the laser injection port; An optical path component, disposed in the laser head housing, for adjusting the laser beam entering the optical path channel from the laser injection port and causing the laser beam to be emitted from the laser emission port; A protective lens assembly is arranged inside the laser emission port; A dust cover is provided at the laser emission port, the dust cover is hingedly mounted on the laser head housing and has an open state and a closed state. In the open state, the dust cover does not cover the laser emission port, and in the closed state, the dust cover covers the laser emission port; A laser switch circuit is used to control the opening and closing of the laser. A first switch and a second switch are arranged in series on the laser switch circuit. The first switch and the second switch are arranged on the laser head housing. The first switch is a manual switch and the second switch is a contact switch. The dust cover triggers the contact switch to turn on when in the open state.

2. The laser cleaning head with a dust cover according to claim 1, characterized in that: The dust cover is provided with a rotating shaft, a first snap-fit ​​structure and a second snap-fit ​​structure. Both ends of the rotating shaft are rotatably mounted on the laser head housing so that the dust cover can be flipped relative to the laser head housing. When the dust cover is in the open state, the first snap-fit ​​structure is snapped onto the contact switch to trigger the contact switch to turn on and keep the dust cover in the open state. When the dust cover is in the closed state, the second snap-fit ​​structure is snapped onto the laser head housing to keep the dust cover in the closed state.

3. The laser cleaning head with a dust cover according to claim 1 or 2, characterized in that: A sealing rubber ring is also provided on the dust cover, and the sealing rubber ring is matched with the edge of the laser emission port. When the dust cover is in the closed state, the sealing rubber ring is tightly attached to the edge of the laser emission port.

4. The laser cleaning head with a dust cover according to claim 3, characterized in that: The protective lens assembly includes a drawer-type carrier, a pressure ring and a protective lens. The drawer-type carrier is provided with a through hole, and the protective lens is installed on the through hole through the pressure ring. The drawer-type carrier is detachably inserted into the laser head housing, and the drawer-type carrier is fixedly connected to the laser head housing by screws.

5. The laser cleaning head with a dust cover according to claim 4, characterized in that: The protective lens components are provided with two.

6. The laser cleaning head with a dust cover according to claim 3, characterized in that: The optical path channel includes an X-axis channel and a Y-axis channel, the X-axis channel is vertically connected to the Y-axis channel, the laser injection port is arranged on the X-axis channel, and the laser emission port is arranged on the Y-axis channel; the optical path component includes a collimator, a focusing mirror, an X-axis reflector and a Y-axis reflector, the collimator and the focusing mirror are arranged on the X-axis channel, the X-axis reflector and the Y-axis reflector are arranged on the Y-axis channel, the X-axis reflector is connected to a first driving motor, and the Y-axis reflector is connected to a second driving motor; after the laser beam enters the optical path channel, it passes through the collimator and the focusing mirror in turn, and then irradiates the X-axis reflector, is reflected by the X-axis reflector to the Y-axis reflector, and then is reflected by the Y-axis reflector to the laser emission port.

7. The laser cleaning head with a dust cover according to claim 1, characterized in that: The invention also comprises an infrared emitter, which is arranged on the laser head housing and located at one side of the laser emission port.

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