Laser cleaning head overheating protection structure with real-time temperature monitoring

Abstract

The utility model discloses a kind of laser cleaning head overheating protection structure with temperature real-time monitoring, including laser cleaning head main body, overheating protection shell, water cooling jacket and laser channel, the central position of laser cleaning head main body is provided with laser channel, and the inside wall of the laser channel is evenly embedded with temperature sensing element, the overheating protection shell is set on the laser cleaning head main body outside laser channel, and the overheating protection shell is close to the side of laser cleaning head main body and is provided with water cooling jacket, the inside of overheating protection shell both sides is evenly provided with radiating fin by pivot, and the overheating protection shell on the side of radiating fin is evenly provided with drive chamber.The utility model is installed with laser cleaning head main body, overheating protection shell, laser channel, temperature sensing element, water cooling jacket and radiating fin, temperature can be detected in real time and preventive heat dissipation is carried out, direct trigger shutdown protection is avoided, and operation continuity and production efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of laser cleaning head protection structure technology, specifically a laser cleaning head overheat protection structure with real-time temperature monitoring. Background Technology

[0002] A laser cleaning head is a device that uses laser technology to clean surfaces. It uses a high-energy laser beam to irradiate surface contaminants (such as rust, oil, coatings, etc.). The contaminants absorb energy and then vaporize or decompose, achieving non-contact cleaning. During the cleaning process, the components inside the laser cleaning head will generate a lot of heat due to absorbing laser energy or working for a long time. If the heat cannot be dissipated in time, it will lead to a decline in component performance and even cause equipment failure or safety hazards. Therefore, an overheat protection structure is required.

[0003] Generally, overheat protection structures are installed outside the laser emission channel in the center of the laser cleaning head, reducing the temperature of the laser cleaning head through water cooling or finned heat dissipation. On the one hand, overheat protection structures lack effective real-time temperature monitoring methods, making it impossible to grasp the temperature changes inside the laser cleaning head in a timely and accurate manner. This results in an inability to react quickly when overheating occurs, easily causing damage to optical components due to overheating. On the other hand, even if some laser cleaning heads have temperature sensing structures, most of them only have simple over-temperature alarm or forced shutdown functions, lacking refined processing of temperature changes. Therefore, an overheat protection structure for laser cleaning heads with real-time temperature monitoring is needed. Utility Model Content

[0004] The purpose of this invention is to provide an overheat protection structure for a laser cleaning head with real-time temperature monitoring, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an overheat protection structure for a laser cleaning head with real-time temperature monitoring, comprising a laser cleaning head body, an overheat protection shell, a water-cooling jacket, and a laser channel. A laser channel is located at the center of the laser cleaning head body, and temperature sensing elements are uniformly embedded in the inner wall of the laser channel. The overheat protection shell is located on the laser cleaning head body outside the laser channel, and a water-cooling jacket is located on the side of the overheat protection shell closest to the laser cleaning head body. Heat dissipation fins are uniformly arranged inside both sides of the overheat protection shell via rotating shafts, and a drive chamber is located on each side of the overheat protection shell on the side of the heat dissipation fins. A transmission shaft is located inside the drive chamber, and driving gears are uniformly distributed on the transmission shaft. A micro motor is fixed to the top of each drive chamber, and the output end of each micro motor is connected to the transmission shaft. One end of each rotating shaft extends into the drive chamber, and a driven gear meshing with the driving gear is located at one end of each rotating shaft.

[0006] Preferably, thermally conductive silicone grease is provided on the side of the water-cooling jacket near the laser cleaning head body, and a cooling pipe is provided inside the water-cooling jacket, the cooling pipe being serpentine and wound around the inside of the water-cooling jacket.

[0007] Preferably, the water-cooling jacket is provided with an inlet and an outlet at both ends, and the inlet and outlet are respectively connected to both ends of the cooling pipe.

[0008] Preferably, the inner wall of the cooling pipe is uniformly distributed with fins, and water cooling channels are formed between the fins.

[0009] Preferably, the inner wall of the laser channel is uniformly provided with grooves, and the temperature sensing elements are all embedded in the grooves.

[0010] Preferably, each of the groove openings is provided with a sapphire protective panel, and the thickness of the sapphire protective panel is 0.5-1mm.

[0011] Preferably, the top of the laser cleaning head body is provided with an audible and visual alarm, which is used to provide an early warning when the temperature in the laser channel exceeds a set value.

[0012] Preferably, the heat dissipation fins are all made of copper alloy, and the surface of the heat dissipation fins is coated with a micro-nano structure heat dissipation coating.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows: This laser cleaning head overheat protection structure with real-time temperature monitoring consists of a laser cleaning head body, an overheat protection shell, a laser channel, a temperature sensing element, a water-cooling jacket, heat dissipation fins, a rotating shaft, a drive gear, a driven gear, a transmission shaft, and a micro motor. The temperature sensing element is embedded in the inner wall of the laser channel to sense the internal temperature of the laser cleaning head in real time during operation. When the laser cleaning head is in normal working condition, the heat dissipation fins are folded, with a flat surface that is not prone to dust accumulation and occupies less space. At this time, water cooling through the water-cooling jacket can meet the heat dissipation requirements under normal working conditions. When the temperature exceeds the set value, the micro motor starts, driving the transmission shaft to rotate, causing the drive gear to rotate as well. The driven gear meshes with the drive gear, and the rotating shaft rotates and unfolds the heat dissipation fins, thereby significantly increasing the heat dissipation area of ​​the overheat protection shell and accelerating the heat dissipation speed. It can detect the temperature in real time and perform preventive heat dissipation, avoiding direct triggering of shutdown protection, reducing frequent start-ups and shutdowns of equipment due to over-protection, and improving work continuity and production efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a frontal cross-sectional view of the present invention.

[0016] Figure 2 This is a top view cross-sectional structural diagram of the laser channel of this utility model;

[0017] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0018] Figure 4 This is a side view of the heat dissipation fin structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of the cooling pipe of this utility model.

[0020] In the diagram: 1. Laser cleaning head body; 2. Overheat protection shell; 3. Water cooling jacket; 4. Cooling pipe; 5. Water inlet; 6. Water outlet; 7. Audible and visual alarm; 8. Groove; 9. Temperature sensing element; 10. Sapphire protective panel; 11. Thermal grease; 12. Heat dissipation fins; 13. Shaft; 14. Micro motor; 15. Drive shaft; 16. Drive gear; 17. Driven gear; 18. Drive chamber; 19. Fins; 20. Laser channel. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] Please see Figure 1-5 The present invention provides an embodiment of a laser cleaning head overheat protection structure with real-time temperature monitoring, comprising a laser cleaning head body 1, an overheat protection shell 2, a water cooling jacket 3, and a laser channel 20. The laser channel 20 is provided at the center of the laser cleaning head body 1, the overheat protection shell 2 is provided on the laser cleaning head body 1 outside the laser channel 20, and the water cooling jacket 3 is provided on the side of the overheat protection shell 2 close to the laser cleaning head body 1.

[0023] Thermal grease 11 is provided on the side of the water-cooled jacket 3 near the laser cleaning head body 1, and a cooling pipe 4 is provided inside the water-cooled jacket 3, which is serpentine and wrapped inside the water-cooled jacket 3.

[0024] Thermal grease 11 can effectively eliminate micro gaps, improve heat conduction efficiency, and can dissipate heat from high-temperature areas more quickly compared to traditional heat dissipation structures.

[0025] The design of the serpentine cooling tube 4 extends the flow path of the coolant in a limited space, increases the contact area with the water cooling jacket 3, significantly enhances the heat exchange effect, ensures uniform heat dissipation, and avoids component damage caused by local overheating.

[0026] The water-cooled jacket 3 has an inlet 5 and an outlet 6 at its two ends, and the inlet 5 and outlet 6 are respectively connected to the two ends of the cooling pipe 4.

[0027] Coolant flows in through inlet 5, circulates within cooling pipe 4 to remove heat, and then flows out through outlet 6. Fins 19 are evenly distributed on the inner wall of cooling pipe 4, and water-cooling channels are formed between the fins 19. The fins 19 divide the interior of cooling pipe 4 into multiple independent water-cooling channels. The coolant forms turbulence in the channels, which increases the convective heat transfer coefficient and significantly enhances the heat dissipation capacity. This water-cooling jacket 3 meets the heat dissipation requirements of the laser cleaning head body 1 under normal operating conditions.

[0028] The interior of the overheat protection shell 2 is evenly provided with heat dissipation fins 12 through the pivot 13 on both sides. When the laser cleaning head body 1 is in the normal operating temperature range, the heat dissipation fins 12 are folded and stored on both sides of the overheat protection shell 2 through the pivot 13. The surface is flat and not easy to accumulate dust, and it occupies little space.

[0029] Temperature sensing elements 9 are uniformly embedded in the inner wall of the laser channel 20, and grooves 8 are uniformly opened in the inner wall of the laser channel 20. The temperature sensing elements 9 are all embedded in the grooves 8, which can monitor the temperature of each area in the laser channel 20 in real time.

[0030] A sapphire protective panel 10 is provided at the opening of the groove 8, and the thickness of the sapphire protective panel 10 is 0.5-1mm, which protects the temperature sensing element 9 while minimizing the impact on temperature sensing.

[0031] Each of the overheat protection shells 2 on one side of the heat sink 12 is provided with a drive chamber 18, and a drive shaft 15 is provided inside the drive chamber 18, and drive gears 16 are evenly distributed on the drive shaft 15.

[0032] Each drive chamber 18 has a micro motor 14 fixed at its top, and the output end of the micro motor 14 is connected to the transmission shaft 15. One end of the rotating shaft 13 extends into the drive chamber 18, and one end of the rotating shaft 13 is provided with a driven gear 17 that meshes with the driving gear 16.

[0033] When the temperature signal of the temperature sensing element 9 exceeds the first threshold, the heat dissipation enhancement mechanism is triggered, the micro motor 14 starts, and its output drives the transmission shaft 15 to rotate. The drive gear 16 on the transmission shaft 15 rotates together with the transmission shaft 15. The driven gear 17 at one end of the rotating shaft 13 meshes with the drive gear 16. Under the drive of the drive gear 16, the heat dissipation fins 12 are driven to rotate and unfold around the rotating shaft 13 through the rotating shaft 13.

[0034] The heat dissipation area of ​​the overheat protection shell 2 is greatly increased. The unfolded heat dissipation fins 12 work together with the water cooling jacket 3 system to accelerate heat dissipation, reduce the temperature of the laser cleaning head body 1, avoid directly triggering the shutdown protection, and ensure the continuity of operation.

[0035] The heat dissipation fins 12 are all made of copper alloy, which has a high thermal conductivity. The surface of the heat dissipation fins 12 is coated with a micro-nano structure heat dissipation coating. By increasing the specific surface area and enhancing the infrared radiation capability, the heat dissipation efficiency of the heat dissipation fins 12 is further improved.

[0036] The top of the laser cleaning head body 1 is equipped with an audible and visual alarm 7. If the temperature still rises under the above heat dissipation method and exceeds the second threshold, the audible and visual alarm 7 on the top of the laser cleaning head body 1 will be activated to issue a warning to the operator in the form of sound and light. The graded response avoids frequent alarms and reduces interference to the operator.

[0037] The specific models and specifications of the temperature sensing element 9, the audible and visual alarm 7, and the micro motor 14 need to be determined based on the specifications and parameters of the device. The selection and calculation method is existing technology, so it will not be described in detail here.

[0038] Working Principle: In this embodiment, when the laser cleaning head body 1 is within its normal operating temperature range, the heat dissipation fins 12 are folded and stored on both sides of the overheat protection shell 2 via the pivot 13. The surface is flat and not prone to dust accumulation, occupying little space. The thermal grease 11 on the side of the water cooling jacket 3 near the laser cleaning head body 1 enhances heat conduction. The internal serpentine cooling pipe 4 receives coolant through the inlet 5. After circulating and removing heat within the cooling pipe 4, the coolant flows out from the outlet 6. The fins 19 on the inner wall of the cooling pipe 4 increase the heat dissipation area. This water cooling system meets the heat dissipation requirements under normal operating conditions. During the operation of the laser cleaning head body 1, the temperature sensing element 9 embedded in the groove 8 on the inner wall of the laser channel 20 senses the internal temperature in real time. The sapphire protective panel 10 at the opening of the groove 8 protects the temperature sensing element 9 while minimizing its impact on temperature sensing. The temperature sensing element 9 converts the monitored temperature data into an electrical signal and transmits it to the external control system. When the temperature signal of the temperature sensing element 9 exceeds the first threshold... When the laser cleaning head body 1 is in operation, the heat dissipation enhancement mechanism is triggered, and the audible and visual alarm 7 on the top of the laser cleaning head body 1 is activated, issuing a warning to the operator in the form of sound and light. At the same time, the micro motor 14 is activated, and its output end drives the transmission shaft 15 to rotate. The drive gear 16 on the transmission shaft 15 rotates together with the transmission shaft 15. The driven gear 17 at one end of the rotating shaft 13 meshes with the drive gear 16. Driven by the drive gear 16, the heat dissipation fins 12 are driven to rotate and unfold around the rotating shaft 13 through the rotating shaft 13, which greatly increases the heat dissipation area of ​​the overheat protection shell 2. The unfolded heat dissipation fins 12 work together with the water cooling jacket 3 system to accelerate heat dissipation, reduce the temperature of the laser cleaning head body 1, avoid directly triggering the shutdown protection, and ensure the continuity of operation. If the temperature still rises under the above heat dissipation method and exceeds the second threshold, the audible and visual alarm 7 on the top of the laser cleaning head body 1 is activated, issuing a warning to the operator in the form of sound and light. The graded response avoids frequent alarms and reduces interference to the operator.

[0039] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0042] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A laser cleaning head overheat protection structure with real-time temperature monitoring, characterized in that, The device includes a laser cleaning head body (1), an overheat protection shell (2), a water-cooling jacket (3), and a laser channel (20). The laser cleaning head body (1) has a laser channel (20) located at its center, and temperature sensing elements (9) are uniformly embedded in the inner wall of the laser channel (20). The overheat protection shell (2) is located on the laser cleaning head body (1) outside the laser channel (20), and a water-cooling jacket (3) is located on the side of the overheat protection shell (2) closest to the laser cleaning head body (1). Heat dissipation fins are uniformly arranged on both sides of the overheat protection shell (2) via a rotating shaft (13). Each heat sink (12) has a heat dissipation fin (12) and a drive chamber (18) is provided on the overheat protection shell (2) on one side of the heat dissipation fin (12). The drive chamber (18) is provided with a transmission shaft (15) and a drive gear (16) is evenly distributed on the transmission shaft (15). A micro motor (14) is fixed at the top of each drive chamber (18) and the output end of the micro motor (14) is connected to the transmission shaft (15). One end of each rotating shaft (13) extends into the drive chamber (18) and a driven gear (17) meshing with the drive gear (16) is provided at one end of each rotating shaft (13).

2. The overheat protection structure for a laser cleaning head with real-time temperature monitoring according to claim 1, characterized in that: The water cooling jacket (3) is provided with thermal grease (11) on the side near the laser cleaning head body (1), and a cooling pipe (4) is provided inside the water cooling jacket (3), which is serpentine and wrapped around the inside of the water cooling jacket (3).

3. The overheat protection structure for a laser cleaning head with real-time temperature monitoring according to claim 2, characterized in that: The water cooling jacket (3) is provided with an inlet (5) and an outlet (6) at both ends, and the inlet (5) and outlet (6) are respectively connected to the two ends of the cooling pipe (4).

4. The overheat protection structure for a laser cleaning head with real-time temperature monitoring according to claim 2, characterized in that: The inner wall of the cooling pipe (4) is uniformly distributed with fins (19), and water cooling channels are formed between the fins (19).

5. The overheat protection structure for a laser cleaning head with real-time temperature monitoring according to claim 1, characterized in that: The inner wall of the laser channel (20) is uniformly provided with grooves (8), and the temperature sensing elements (9) are all embedded in the grooves (8).

6. The overheat protection structure for a laser cleaning head with real-time temperature monitoring according to claim 5, characterized in that: Each groove (8) has a sapphire protective panel (10) at its opening, and the thickness of the sapphire protective panel (10) is 0.5-1mm.

7. The overheat protection structure for a laser cleaning head with real-time temperature monitoring according to claim 1, characterized in that: The laser cleaning head body (1) is equipped with an audible and visual alarm (7) on its top, and the audible and visual alarm (7) is used to provide a warning when the temperature in the laser channel (20) exceeds a set value.

8. The overheat protection structure for a laser cleaning head with real-time temperature monitoring according to claim 1, characterized in that: The heat dissipation fins (12) are all made of copper alloy, and the surface of the heat dissipation fins (12) is coated with a micro-nano structure heat dissipation coating.

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