Light path system for laser grooving equipment
By using an optical path protective cover and an air-filling module to create positive pressure in the optical path system of the laser grooving equipment, combined with an airflow diffuser, the problem of dust entering the optical path is solved, achieving stable transmission of laser power and improved grooving accuracy.
Patent Information
- Application Number
- CN202422738617.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-11
AI Technical Summary
Existing laser grooving equipment has deficiencies in its optical path system regarding dust protection. Dust can easily enter the optical path, leading to attenuation of laser power transmission, reduced grooving accuracy and efficiency, and increased production costs and maintenance difficulty.
The optical path is protected by a protective cover and an inflation module. By injecting gas into the optical path to create positive pressure, combined with an airflow diffuser, dust is blocked from entering the optical path, dust accumulation is reduced, and airflow is prevented from blowing directly onto the optical components.
It effectively blocks dust from entering the optical path, reduces dust accumulation, ensures stable transmission of laser output power, improves grooving accuracy and efficiency, and reduces production costs and maintenance difficulty.
Smart Images
Figure CN223476573U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of solar cell manufacturing technology, and in particular to an optical path system for laser grooving equipment. Background Art
[0002] Currently, laser grooving equipment plays a crucial role in the production of crystalline silicon solar cells. For example, it creates grooves on the surface of solar cells, where electrodes are formed using electroplating techniques such as copper or silver plating. Laser grooving equipment connects the laser and galvanometer via a sophisticated optical path system to achieve efficient and precise grooving operations. However, existing optical path system designs have significant shortcomings in dust protection.
[0003] Specifically, current optical path systems primarily rely on protective plates to isolate dust generated during the grooving process. While this design provides some protection, the plate connections often fail to achieve a seamless fit, allowing grooving dust to enter the optical path. Once dust accumulates on the surface of optical components, it not only severely impacts laser power transmission but can also degrade the performance of the optical path system, potentially leading to malfunctions. More seriously, dust accumulation causes significant power attenuation during transmission from the laser to the galvanometer, reducing grooving accuracy and efficiency while increasing production costs and maintenance complexity. Therefore, existing dust protection methods are no longer sufficient to meet the high stability and reliability requirements of the optical path system during solar cell production.
[0004] To address the aforementioned issues, it is imperative to improve the optical path system of the laser grooving equipment. This would effectively prevent grooving dust from entering the optical path, reduce dust accumulation on the optical lenses, and ensure that the laser output power is transmitted to the galvanometer with minimal attenuation, thereby improving the efficiency and quality of solar cell production. Utility Model Content
[0005] This application provides an optical path system for laser grooving equipment to solve the above-mentioned technical problems.
[0006] In a first aspect, according to some embodiments, this application provides an optical path system for a laser grooving device, including: a laser, a mirror module, a galvanometer, an optical path protective cover, and an inflation module;
[0007] The laser is used to emit light, and the reflector module is used to reflect the light emitted by the laser to the galvanometer. The light path protective cover covers the outside of the light path and the reflector module to seal the light path. The light path protective cover has a through hole, and the inflation module is connected to the light path protective cover through the through hole and injects gas into the light path protective cover through the through hole. The inflation module includes an airflow diffuser disposed at one end near the light path, and the airflow diffuser is used to disperse the gas injected into the light path protective cover into multiple airflow beams that are sent in different directions.
[0008] Preferably, one end of the airflow diffuser passes through the through hole, and the other end of the airflow diffuser is trumpet-shaped. The circumference of the side of the airflow diffuser near the through hole is smaller than the circumference of the side near the optical path.
[0009] Preferably, the side of the airflow diffuser closest to the optical path is a circular plate with multiple micropores, and the diameter of the micropores near the center of the circular plate is smaller than the diameter of the micropores near the circumference of the circular plate.
[0010] Preferably, a sealing ring is fitted at the junction of the airflow diffuser and the through hole.
[0011] Preferably, the inflation module further includes an air compressor, which is connected to the airflow diffuser via a pipe.
[0012] Preferably, a regulating valve is provided between the air compressor and the airflow diffuser.
[0013] Preferably, a filter is provided between the air compressor and the airflow diffuser.
[0014] Preferably, an internally threaded quick-connect fitting is provided between the air compressor and the airflow diffuser.
[0015] Preferably, the sealing ring is disposed on the outside of the optical path protective cover, and a fixing plate is provided on the side of the sealing ring away from the optical path, the fixing plate being tightly connected to the sealing ring.
[0016] Preferably, the optical path protective cover is made of aluminum alloy.
[0017] The optical path system for laser grooving equipment provided in this application injects gas into the optical path protective cover through an inflation module. This is equivalent to adding a positive pressure device inside the optical path, making the internal air pressure greater than the external air pressure, thus preventing dust from entering the optical path and reducing dust accumulation on the optical lenses. Simultaneously, an airflow diffuser is added inside the optical path to quickly disperse the airflow, preventing it from directly blowing onto the optical components and thus avoiding damage to the optical parts. This application effectively prevents grooving dust from entering the optical path while avoiding damage to the optical components. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this application or in the conventional technology, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 A schematic diagram of an optical path system for a laser grooving device provided in an embodiment of this application;
[0020] Figure 2 This is a schematic diagram of an airflow diffuser for an optical path system of a laser grooving device, provided as an embodiment of this application.
[0021] Figure reference numerals: 1. Laser, 2. Reflector module, 3. Galvanometer, 4. Optical path protective cover, 5. Inflation module, 5. Airflow diffuser, 51. Sealing ring, 52. Fixing plate, 53. Air compressor, 54. Pipe, 55. Regulating valve, 56. Filter, 57. Internal threaded quick-connect fitting, 58. DETAILED DESCRIPTION
[0022] The technical solution of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication of two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0023] The optical path system for a laser grooving device provided in this embodiment will be described in further detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.
[0024] Please refer to Figure 1 An optical path system for a laser grooving device includes: a laser 1, a reflector module 2, a galvanometer 3, an optical path protective cover 4, and an inflation module 5; the laser 1 is used to emit light, the reflector module 2 is used to reflect the light emitted by the laser 1 to the galvanometer 3; the optical path protective cover 4 covers the outside of the optical path and the reflector module 2 to seal the optical path; the optical path protective cover 4 is provided with a through hole, the inflation module 5 is connected to the optical path protective cover 4 through the through hole, and injects gas into the optical path protective cover 4 through the through hole; the inflation module 5 includes an airflow diffuser 51 disposed at the end near the optical path, the airflow diffuser 51 is used to disperse the gas injected into the optical path protective cover 4 into multiple airflow beams sent in different directions.
[0025] Specifically, if Figure 1 As shown, laser 1 emits light, and mirror module 2 reflects the light emitted by laser 1 to galvanometer 3. A protective cover 4 covers the outer perimeter of the light path and mirror module 2 to seal the light path and prevent dust from entering. Gas injection module 5 injects gas into the light path through a through-hole in the protective cover 4, effectively adding a positive pressure device to the inside of the light path. This makes the internal air pressure greater than the external air pressure, preventing groove dust from entering the light path, reducing dust accumulation on the optical lenses, and ensuring that the laser output power is transmitted to the galvanometer with minimal attenuation. An airflow diffuser 51 is located at the end of the gas injection module 5 near the light path. The airflow diffuser 51 disperses the gas injected into the protective cover 4 into multiple airflow beams that are sent in different directions. The addition of the airflow diffuser 51 within the light path quickly disperses the airflow, preventing it from directly blowing onto optical components and thus avoiding damage to the laser and other optical parts.
[0026] The optical path system for a laser grooving apparatus provided in this application injects gas into the optical path within the optical path protective cover 4 via the gas filling module 5. This is equivalent to adding a positive pressure device inside the optical path, making the internal air pressure greater than the external air pressure. This prevents grooving dust from entering the optical path, reduces dust accumulation on the optical lenses, and ensures that the laser output power is transmitted to the galvanometer with minimal attenuation. An airflow diffuser 51 is added inside the optical path to quickly disperse the airflow, preventing it from directly blowing onto the optical components and thus avoiding damage to the laser and other optical components. This system prevents grooving dust from entering the optical path while simultaneously avoiding damage to the optical components.
[0027] In one alternative embodiment, one end of the airflow diffuser 51 passes through a through hole, and the other end of the airflow diffuser 51 is trumpet-shaped. The circumference of the side of the airflow diffuser 51 near the through hole is smaller than the circumference of the side near the optical path.
[0028] Specifically, if Figure 2 As shown, the airflow diffuser 51 is used to disperse the gas injected into the optical path protective cover 4. One end of the airflow diffuser 51 passes through the through hole, and the other end is horn-shaped. The circumference of the side of the airflow diffuser 51 that passes through the through hole is smaller than the circumference of the side closer to the optical path. That is, the side with the smaller circumference passes through the through hole, and the side with the larger circumference is horn-shaped.
[0029] The embodiments of this application configure the airflow diffuser 51 as a horn shape, so that the airflow can gradually diffuse when injected into the optical path shield 4, making the airflow more uniform when dispersed, avoiding excessive or insufficient local air pressure, and can quickly disperse the airflow to prevent the airflow from blowing directly on the optical components, thereby avoiding damage to the laser and other optical components.
[0030] In one optional embodiment, the side of the airflow diffuser 51 closest to the optical path is a circular plate with multiple microholes, and the diameter of the microholes near the center of the circular plate is smaller than the diameter of the microholes near the circumference of the circular plate.
[0031] Specifically, if Figure 2 As shown, the side of the airflow diffuser 51 closest to the optical path is a circular plate with multiple micro-holes. The diameter of the micro-holes near the center of the circular plate is smaller than that near the circumference. When the airflow passes through the airflow diffuser 51, the airflow will experience different resistances due to the change in the diameter of the micro-holes. The smaller diameter of the micro-holes near the center results in greater resistance when the airflow passes through, causing the airflow speed to slow down and disperse. The larger diameter of the micro-holes near the circumference results in less resistance when the airflow passes through, but due to the dispersion effect of the airflow at the center, the overall airflow forms a uniform dispersion state at the circular plate.
[0032] By varying the diameter of the micro-orifice, the airflow is dispersed, preventing it from directly impacting optical components. The dispersed airflow is gentler, reducing the risk of damage to the laser and other optical parts.
[0033] In one alternative embodiment, a sealing ring 52 is fitted at the junction of the airflow diffuser 51 and the through hole.
[0034] Specifically, if Figure 1 As shown, a sealing ring 52 is fitted at the junction of the airflow diffuser 51 and the through hole. The sealing ring 52 is made of fluororubber to ensure optimal sealing performance. Fluororubber has excellent high-temperature resistance, corrosion resistance, and aging resistance, and can maintain good sealing performance for a long time.
[0035] In one alternative embodiment, the sealing ring 52 is disposed on the outside of the optical path protective cover 4, and a fixing plate 53 is provided on the side of the sealing ring 52 away from the optical path, and the fixing plate 53 is tightly connected to the sealing ring 52.
[0036] Specifically, if Figure 1 As shown, a sealing ring 52 is fitted at the junction of the airflow diffuser 51 and the through hole. The sealing ring 52 is located on the outside of the optical path protective cover 4. A fixing plate 53 is provided on the side of the sealing ring 52 away from the optical path, and the fixing plate 52 is tightly connected to the sealing ring 52. The design of the sealing ring 52 being located on the outside of the optical path protective cover 4, with a fixing plate 53 tightly connected to it on the side away from the optical path, plays an important role in sealing, dust and pollution prevention, fixed support, protection of optical path components, and enhancement of structural integrity.
[0037] In an alternative embodiment, the inflation module further includes an air compressor 54, which is connected to the airflow diffuser 51 via a pipe 55.
[0038] Specifically, if Figure 1 As shown, the inflation module 5 also includes an air compressor 54, which supplies stable compressed dry air to the system. The air compressor 54 is connected to the airflow diffuser 51 via a pipe 55, and the stable compressed dry air supplied by the air compressor 54 is transmitted to the airflow diffuser 51 through the pipe 55. The pipe 55 uses a constant pressure air supply pipe to ensure airflow stability, provide a constant positive pressure environment for the optical path, and reduce the impact of air pressure fluctuations on laser performance.
[0039] In one alternative embodiment, a regulating valve 56 is provided between the air compressor 54 and the airflow diffuser 51.
[0040] Specifically, if Figure 1 As shown, a regulating valve 56 is provided between the air compressor 54 and the airflow diffuser 51. The regulating valve 56 is a CDA (Compressed Dry Air) adjustable valve, which can control the amount of air entering the optical path, ensuring a sufficient air pressure difference while preventing excessive compressed air from entering and affecting the laser temperature. Adding a valve allows for precise adjustment of the air volume, ensuring a sufficient air pressure difference while preventing excessive compressed air from entering the system, thereby avoiding adverse effects on the laser's temperature stability and performance.
[0041] In an alternative embodiment, a filter 57 is provided between the air compressor 54 and the airflow diffuser 51.
[0042] Specifically, if Figure 1As shown, a filter 57, or CDA filter, is provided between the air compressor 54 and the airflow diffuser 51 to ensure the cleanliness of the air inside the optical path. This effectively prevents dust and other particles from entering the optical path, protecting the optical components from contamination.
[0043] As can be seen, the embodiments of this application employ CDA purification filtration, using adjustable valves to control the gas flow. The gas is injected into the optical path, and the CDA entering the optical path is dispersed by an airflow dispersion device, creating a pressure difference between the inside and outside of the optical path. This pressure difference prevents the grooved dust from entering the optical path, reducing dust accumulation on the optical lenses and ensuring that the laser output power is transmitted to the galvanometer with minimal attenuation. The positive pressure device arrangement and structure of this laser optical path are reasonably designed, offering good sealing, easy replacement, and the potential for mass production and use in automated equipment.
[0044] In an alternative embodiment, an internally threaded quick-connect fitting 58 is provided between the air compressor 54 and the airflow diffuser 51.
[0045] Specifically, if Figure 1 As shown, the internally threaded quick-connect fitting 58 is positioned between the air compressor 54 and the airflow diffuser 51, dividing the pipeline into two parts. The design of the internally threaded quick-connect fitting 58 makes connecting and disconnecting the devices quick and easy, improving work efficiency and facilitating equipment maintenance and replacement. The internal thread structure provides an effective seal to prevent gas leakage. Gas sealing is crucial between the air compressor 54 and the airflow diffuser 51, and the sealing performance of the internally threaded quick-connect fitting 57 ensures stable gas transmission.
[0046] In one alternative implementation, the optical path shield 4 is made of aluminum alloy.
[0047] Specifically, the optical path protective cover 4 is made of aluminum alloy, which is lightweight, not easily deformed, and easy to disassemble and install, making daily maintenance and cleaning convenient.
[0048] The optical path system for laser grooving equipment provided in this application introduces a positive pressure inside the optical path. It employs a filter for purification and filtration, and an adjustable valve to control the gas flow. Gas is injected into the optical path and dispersed by an airflow dispersion device, creating a pressure difference between the internal and external air pressures. This pressure difference prevents grooving dust from entering the optical path, reducing dust accumulation on the optical lenses and ensuring that the laser output power is transmitted to the galvanometer with minimal attenuation. The positive pressure device in this laser optical path has a reasonable structural design, good sealing, is easy to replace, and can be used in batches in automated equipment.
[0049] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this application and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this application should be included within the protection scope of this application. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.
Claims
1. An optical path system for a laser grooving device, characterized in that, include: Laser, mirror module, galvanometer, optical path protective cover and inflation module; The laser is used to emit light, and the reflector module is used to reflect the light emitted by the laser to the galvanometer. The light path protective cover covers the outside of the light path and the reflector module to seal the light path. The light path protective cover has a through hole, and the inflation module is connected to the light path protective cover through the through hole and injects gas into the light path protective cover through the through hole. The inflation module includes an airflow diffuser disposed at one end near the light path, and the airflow diffuser is used to disperse the gas injected into the light path protective cover into multiple airflow beams that are sent in different directions.
2. The optical path system for laser grooving equipment according to claim 1, characterized in that, One end of the airflow diffuser passes through the through hole, and the other end of the airflow diffuser is trumpet-shaped. The circumference of the side of the airflow diffuser near the through hole is smaller than the circumference of the side near the optical path.
3. The optical path system for laser grooving equipment according to claim 1, characterized in that, The airflow diffuser is a circular plate with multiple micropores on the side near the optical path, and the diameter of the micropores near the center of the circular plate is smaller than the diameter of the micropores near the circumference of the circular plate.
4. The optical path system for laser grooving equipment according to claim 1, characterized in that, A sealing ring is fitted at the junction of the airflow diffuser and the through hole.
5. The optical path system for laser grooving equipment according to claim 1, characterized in that, The inflation module further includes an air compressor, which is connected to the airflow diffuser via a pipe.
6. The optical path system for laser grooving equipment according to claim 5, characterized in that, A regulating valve is provided between the air compressor and the airflow diffuser.
7. The optical path system for a laser grooving device according to claim 5, characterized in that, A filter is provided between the air compressor and the airflow diffuser.
8. The optical path system for a laser grooving device according to claim 5, characterized in that, An internally threaded quick-connect fitting is provided between the air compressor and the airflow diffuser.
9. The optical path system for a laser grooving device according to claim 4, characterized in that, The sealing ring is disposed on the outside of the optical path protective cover, and a fixing plate is provided on the side of the sealing ring away from the optical path, and the fixing plate is tightly connected to the sealing ring.
10. The optical path system for a laser grooving device according to claim 1, characterized in that, The optical path protective cover is made of aluminum alloy.