Laser cleaning head and laser cleaning device

Abstract

The utility model provides a laser cleaning head and a laser cleaning device, and the laser cleaning head comprises a rotating mirror assembly which comprises a refractor; the field lens assembly comprises a focus lens, and the focus lens is located on an emergent light path of the refractor; and the first temperature sensor is located on the rotating mirror assembly. The laser cleaning head and the laser cleaning device can be prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cleaning, in particular to a laser cleaning head and a laser cleaning device. Background Art

[0002] In modern industrial applications, laser cleaning is increasingly replacing traditional cleaning methods due to its fast and effective cleaning results.

[0003] In actual production and use, large-area laser cleaning is often required to provide efficient cleaning capabilities. At this time, large-format laser cleaning equipment is required. However, large-format laser cleaning equipment is generally used with a high-power laser and a high-power cleaning head. The high-power laser energy generated by a high-power laser is mainly used to clean products. If it is not operated properly, the high-power laser energy will cause damage to the high-power cleaning head. In severe cases, it will affect the working state of the laser cleaning equipment and cause permanent damage. Utility Model Content

[0004] The utility model aims to provide a laser cleaning head and a laser cleaning device to solve the problem that the existing laser cleaning head and the laser cleaning device are easily damaged.

[0005] To solve the above technical problems, the utility model provides a laser cleaning head, comprising: a rotating mirror assembly, including a refracting mirror; a field lens assembly, including a focusing mirror, wherein the focusing mirror is located on the outgoing light path of the refracting mirror; and a first temperature sensor, which is located on the rotating mirror assembly.

[0006] Optionally, the rotating mirror assembly includes a rotating mirror motor for driving the refractive mirror to rotate, and a water-cooled radiator in contact with an outer wall of the rotating mirror motor and for absorbing heat.

[0007] Optionally, the first temperature sensor is arranged on the water-cooled radiator.

[0008] Optionally, the mirror rotating motor is a stepping motor.

[0009] Optionally, the first temperature sensor is a contact temperature sensor.

[0010] Optionally, a reflector assembly is further included, wherein the reflector assembly has a reflector, and the refractor is located on the outgoing light path of the reflector.

[0011] Optionally, a second temperature sensor is also included which is arranged on the reflector assembly.

[0012] Optionally, a third temperature sensor for detecting the temperature of the field lens assembly is also included.

[0013] Optionally, the third temperature sensor is a non-contact temperature sensor.

[0014] The utility model also provides a laser cleaning device, comprising a laser and the above-mentioned laser cleaning head, wherein the laser cleaning head is located on the optical path of the laser light beam emitted by the laser.

[0015] The laser cleaning head and laser cleaning device provided by the utility model have the following beneficial effects:

[0016] Since the rotating mirror assembly receives the laser beam from the reflecting assembly and refracts a large number of laser beams into the field lens assembly at different angles, only a very small amount of the laser beam is converted into heat energy to cause the rotating mirror assembly to heat up. The rotating mirror assembly will not reach the set temperature threshold when it is working normally, and the temperature information detected by the first temperature sensor will not trigger the temperature protection signal. On the contrary, if the rotating mirror assembly is damaged, more laser beams will be converted into heat energy, causing the temperature of the rotating mirror assembly to rise to the set threshold. The temperature information detected by the first temperature sensor triggers the temperature protection signal, causing the laser cleaning head to stop working, thereby protecting the laser cleaning head and avoiding damage to the laser cleaning head. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the laser cleaning head in the embodiment of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the rotating mirror assembly of the laser cleaning head in the embodiment of the utility model;

[0019] Figure 3 It is a structural schematic diagram of a reflector assembly of a laser cleaning head in an embodiment of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the field lens assembly of the laser cleaning head in the embodiment of the utility model.

[0021] Description of reference numerals:

[0022] 100 - field mirror assembly; 200 - rotating mirror assembly; 210 - rotating mirror; 220 - rotating mirror motor; 300 - reflecting mirror assembly; 400 - third temperature sensor. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 This is a schematic diagram of the structure of the laser cleaning head in the embodiment of the utility model. Figure 2 2 is a schematic structural diagram of a rotating mirror assembly 200 of a laser cleaning head in an embodiment of the utility model. Figure 33 is a schematic structural diagram of a reflector assembly 300 of a laser cleaning head in an embodiment of the utility model. Figure 4 It is a structural schematic diagram of the field lens assembly 100 of the laser cleaning head in the embodiment of the utility model. This embodiment provides a laser cleaning head, including: a rotating mirror assembly 200, including a refracting mirror; a field lens assembly 100, including a focusing mirror, and the focusing mirror is located on the output light path of the refracting mirror; a first temperature sensor is located on the rotating mirror assembly 200.

[0030] Since the rotating mirror assembly 200 receives the laser beam from the reflecting assembly and refracts a large number of laser beams into the field lens assembly 100 at different angles, only a very small amount of the laser beam is converted into heat energy to cause the rotating mirror assembly 200 to heat up. When the rotating mirror assembly 200 is working normally, the set temperature threshold will not be reached, and the temperature information detected by the first temperature sensor will not trigger a temperature protection signal. On the contrary, if the rotating mirror assembly 200 is damaged, more laser beams will be converted into heat energy, causing the temperature of the rotating mirror assembly 200 to rise to the set threshold. The temperature information detected by the first temperature sensor triggers a temperature protection signal, causing the laser cleaning head to stop working, thereby protecting the laser cleaning head and avoiding damage to the laser cleaning head.

[0031] Furthermore, the rotating mirror assembly 200 includes a rotating mirror motor 220 for driving the refractor 210 to rotate and a water-cooled radiator in contact with an outer wall of the rotating mirror motor 220 for absorbing heat.

[0032] Preferably, the first temperature sensor is arranged on the water-cooled radiator. Since the rotating mirror assembly 200 receives the laser beam from the reflecting assembly and reflects a large number of laser beams to the field mirror at different angles, only a very small amount of laser beam is converted into heat energy to heat up the rotating mirror assembly 200. Meanwhile, the rotation of the rotating mirror motor 220 in the rotating mirror assembly 200 will also generate a certain amount of heat. The water-cooled radiator in the rotating mirror assembly 200 can reduce and stabilize the temperature of the rotating mirror assembly 200. When the rotating mirror assembly 200 is working normally, the set temperature threshold will not be reached. The temperature information detected by the first temperature sensor will not trigger the temperature protection signal. On the contrary, if the rotating mirror assembly 200 is damaged, more laser beams will be converted into heat energy, and the rotating mirror motor 220 will generate more heat energy, so that the temperature of the rotating mirror assembly 200 rises to the set threshold. The temperature information detected by the first temperature sensor triggers the temperature protection signal, so that the laser cleaning head stops working, thereby protecting the laser cleaning head and avoiding damage to the laser cleaning head.

[0033] Preferably, the mirror rotating motor 220 is a stepping motor.

[0034] In this embodiment, the first temperature sensor is a contact temperature sensor, which can improve the accuracy of temperature detection of the rotating mirror assembly.

[0035] In this embodiment, the laser cleaning head further includes a reflector assembly 300, wherein the reflector assembly 300 includes a reflector, and the refraction mirror is located on the outgoing light path of the reflector.

[0036] In this embodiment, the laser cleaning head also includes a second temperature sensor arranged on the reflector assembly 300. In this way, when the laser cleaning head is working, the reflector assembly 300 reflects a large amount of laser beams to the rotating mirror assembly 200, and only a very small amount of the laser beams is converted into heat energy to cause the reflector assembly 300 to heat up. When working stably, the temperature rise of the reflector assembly 300 will not reach the temperature setting threshold and will not trigger the temperature protection signal. On the contrary, if the reflector is damaged, more laser beams will be converted into heat energy, causing the temperature of the reflector assembly 300 to exceed the set threshold. At this time, a temperature protection signal will be issued to stop the laser cleaning head from working, thereby achieving protection of the laser cleaning head.

[0037] The second temperature sensor is a contact temperature sensor.

[0038] In this embodiment, the laser cleaning head further includes a third temperature sensor 400 for detecting the temperature of the field lens assembly 100. When the laser cleaning head is working, the field lens assembly 100 receives the laser beam from the rotating mirror assembly 200 and focuses the laser beam on the plate to be cleaned. Under normal working conditions, only a very small amount of the laser beam is converted into heat energy to heat up the field lens assembly 100. The temperature rise of the field lens assembly 100 will not reach the temperature setting threshold, and the temperature protection signal will not be triggered. On the contrary, if the laser beam is reflected on the edge of the field lens, more laser beams will be converted into heat energy, causing the temperature of the field lens assembly 100 to rise to the set threshold. At this time, a temperature protection signal will be issued to stop the laser cleaning head from working, thereby protecting the laser cleaning head.

[0039] The third temperature sensor 400 is a non-contact temperature sensor.

[0040] This embodiment further provides a laser cleaning device, comprising a laser and the laser cleaning head in the above embodiment, wherein the laser cleaning head is located on the optical path of the laser beam emitted by the laser.

[0041] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A laser cleaning head, comprising: A rotating mirror assembly, including a refractor; A field lens assembly, comprising a focusing lens, wherein the focusing lens is located on the outgoing light path of the refraction lens; as well as, The first temperature sensor is located on the rotating mirror assembly.

2. The laser cleaning head according to claim 1, characterized in that: The rotating mirror assembly includes a rotating mirror motor for driving the refractor to rotate, and a water-cooled radiator in contact with an outer wall of the rotating mirror motor and used for absorbing heat.

3. The laser cleaning head according to claim 2, characterized in that: The first temperature sensor is arranged on the water-cooling radiator.

4. The laser cleaning head according to claim 2, characterized in that: The mirror rotating motor is a stepping motor.

5. The laser cleaning head according to claim 1, characterized in that: The first temperature sensor is a contact temperature sensor.

6. The laser cleaning head according to claim 1, characterized in that: It also includes a reflector assembly, which has a reflector, and the refractor is located on the outgoing light path of the reflector.

7. The laser cleaning head according to claim 6, characterized in that: Also included is a second temperature sensor disposed on the reflector assembly.

8. The laser cleaning head according to claim 1, characterized in that: A third temperature sensor is also included for detecting the temperature of the field lens assembly.

9. The laser cleaning head according to claim 8, characterized in that: The third temperature sensor is a non-contact temperature sensor.

10. A laser cleaning device, characterized in that: It comprises a laser and a laser cleaning head as claimed in any one of claims 1 to 9, wherein the laser cleaning head is located on the optical path of a laser beam emitted by the laser.

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