Camera obscura and laser processing equipment

Abstract

The utility model discloses a camera obscura and laser processing equipment, and the camera obscura comprises a box body which is provided with an inner cavity and an opening formed in the bottom, and the opening is communicated with the inner cavity; the laser field lens is arranged at the top of the box body; the partition plate is installed in the inner cavity and divides the inner cavity into an upper sub-cavity and a lower sub-cavity, the sub-cavity located on the lower portion is communicated with the opening, and the partition plate is provided with a hollowed-out structure for laser to pass through; the air outlet is formed in the box body and is communicated with the sub-cavity positioned at the lower part; and the air inlet is formed in the box body and is communicated with the sub-cavity positioned at the lower part. Dust generated in the machining process can be effectively prevented from escaping on the laser path, the purity of the laser beam is kept, and interference of the dust on the laser spot quality is avoided. The hollowed-out structure on the partition plate not only can block laser beams beyond the standard line width, but also effectively reduces the line width widening problem caused by divergence of the laser beams at the head and tail positions of the pattern, ensures that the laser pattern is more accurate, and improves the accuracy of patterning processing.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic manufacturing, specifically to darkrooms and laser processing equipment. Background Technology

[0002] Laser patterning is used to pattern the relevant film layers of photovoltaic cells. A high-peak-power laser spot, under the action of a high-speed galvanometer, instantly vaporizes the film layer in a designated area, such as BSG, PSG, and amorphous silicon, thus achieving laser patterning. The laser spot must be flawless, with its shape and linewidth conforming to specified standards. Its effectiveness directly affects the residue of the film layer after chemical etching, thus influencing the size of the P-region, N-region, and gap region, potentially leading to leakage problems after metallization. While high-energy laser heating can heat and vaporize the film layer, it cannot completely vaporize it. A large amount of dust is still generated during the production process. This dust disperses in the laser dark chamber, obstructing the laser beam and causing adverse effects.

[0003] Current laser darkrooms typically use dust extraction machines to remove dust, but in most cases, the dust cannot be completely removed. Dust particles dispersed during production often obstruct the laser beam path, affecting the quality of the laser spot. In actual production, dust residue can also be observed on the walls of the darkroom. Utility Model Content

[0004] In order to solve the technical problems mentioned in the prior art, this disclosure proposes a dark box and laser processing equipment.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A black box, comprising:

[0007] The housing has an inner cavity and an opening at the bottom, the opening communicating with the inner cavity;

[0008] A laser field lens is mounted on the top of the housing;

[0009] A partition is installed inside the inner cavity, dividing the inner cavity into two sub-cavities arranged vertically. The lower sub-cavity is connected to the opening. The partition is provided with a hollow structure for laser to pass through.

[0010] An air outlet is located on the housing and communicates with the sub-cavity located below;

[0011] An air inlet is located on the housing and communicates with the sub-cavity located below.

[0012] In some embodiments, the partition is positioned near the bottom of the housing.

[0013] In some embodiments, an exhaust vent is also included, which is disposed on the housing and communicates with the upper sub-cavity.

[0014] In some embodiments, the exhaust vent is positioned close to the partition.

[0015] In some embodiments, the partition is detachably installed within the cavity.

[0016] In some embodiments, the air outlet and the air inlet are arranged opposite each other at the two ends of the lower sub-cavity.

[0017] In some embodiments, the air outlet and the air inlet are located near the bottom of the housing.

[0018] In some embodiments, the air inlet is provided with a dustproof screen.

[0019] In some embodiments, the box is rectangular in shape.

[0020] This disclosure also relates to a laser processing apparatus, including the dark box as described above.

[0021] Due to the application of the above technical solution, the beneficial effects of this disclosure compared with the prior art are as follows:

[0022] The darkroom disclosed herein divides its internal cavity into upper and lower sub-cavities by installing a partition inside the cavity. The lower sub-cavity is connected to an opening and is used to accommodate the workpiece to be processed. This structure can effectively prevent dust generated during processing from escaping along the laser path, maintaining the purity of the laser beam and avoiding interference from dust on the quality of the laser spot.

[0023] Meanwhile, the perforated structure on the partition not only blocks laser beams outside the standard linewidth but also effectively reduces the linewidth widening caused by laser beam divergence at the beginning and end of the graphic. This ensures more precise laser graphics, maintaining the required linewidth and thus improving the accuracy of graphic processing. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a cross-sectional view of the dark box in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1-Box body; 11-Side panel; 12-Top panel; 13-Opening; 2-Laser field lens; 3-Partition; 4-Air outlet; 5-Air inlet; 6-Exhaust vent; 7-Dustproof net; 8-Hollow structure. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present disclosure, the technical solutions of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present disclosure, and not all embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present disclosure.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this disclosure 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 for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] In this disclosure, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this disclosure and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0031] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain circumstances to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this disclosure according to the specific circumstances.

[0032] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other. This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Please see Figure 1 One embodiment of this disclosure provides a darkroom including a housing 1, a laser field lens 2, a partition 3, an air outlet 4, and an air inlet 5.

[0035] Specifically, the housing 1 has an inner cavity and an opening 13 at the bottom, which communicates with the inner cavity. The laser field lens 2 is located at the top of the housing 1. A partition 3 is installed inside the inner cavity, dividing it into two sub-cavities arranged vertically. The lower sub-cavity communicates with the opening 13. The partition 3 has a perforated structure 8 for laser transmission. An air outlet 4 is located on the housing 1 and communicates with the lower sub-cavity. An air inlet 5 is located on the housing 1 and communicates with the lower sub-cavity.

[0036] In some embodiments, the housing 1 is rectangular. Specifically, the housing 1 includes four side plates 11 and a top plate 12 connected to one end of the four side plates 11. The laser field lens 2 is disposed on the top plate 12.

[0037] By installing a partition 3 inside the housing 1, the inner cavity is divided into upper and lower sub-cavities. The lower sub-cavity is connected to the opening 13 and is used to accommodate the workpiece to be processed. This structure can effectively prevent dust generated during processing from escaping along the laser path, maintain the purity of the laser beam, and avoid dust interference with the quality of the laser spot.

[0038] Meanwhile, the hollow structure 8 on the partition 3 not only blocks laser beams outside the standard line width, but also effectively reduces the line width widening problem caused by the laser beam diverging at the beginning and end of the pattern. This ensures more precise laser-printed graphics, maintaining the required line width and thus improving the accuracy of the graphic processing. The hollow structure 8 is consistent with the pattern to be formed.

[0039] It is worth noting that air inlet 5 and air outlet 4 are respectively connected to blower equipment. Under the action of the blower equipment, the dust generated by laser processing is discharged from air outlet 4.

[0040] In some embodiments, the air outlet 4 and the air inlet 5 are arranged opposite each other at both ends of the lower sub-cavity and are located near the bottom of the housing 1. The symmetrical arrangement of the air inlet 5 and the air outlet 4 helps to control the direction of airflow, can quickly remove dust, and prevent dust from spreading from the lower sub-cavity to the upper sub-cavity, thereby improving the cleanliness of the laser processing environment and ensuring the stability of the laser beam.

[0041] In some embodiments, the air inlet 5 is equipped with a dust filter 7 to prevent external dust from being brought into the lower sub-cavity and contaminating the workpiece.

[0042] In some embodiments, the partition 3 is disposed near the bottom of the housing 1.

[0043] During laser processing, a large amount of fine dust is usually generated. Setting the baffle 3 low helps reduce the diffusion of dust. Furthermore, since dust settles due to gravity, setting the baffle 3 low promotes dust settling, further preventing dust from entering the laser path, ensuring the purity of the laser beam, and thus improving processing accuracy and stability.

[0044] In some embodiments, an exhaust vent 6 is also included, which is disposed on the housing 1 and communicates with the upper sub-cavity. By providing the exhaust vent 6 to extract dust that escapes into the upper sub-cavity during laser processing, the purity of the laser beam is further improved. A blower is connected to the exhaust vent 6.

[0045] In some embodiments, the exhaust vent 6 is positioned close to the partition 3 to more effectively remove dust escaping upwards from the lower sub-cavity. Since dust typically rises, placing the exhaust vent 6 near the partition 3 allows for timely capture and removal of this escaping dust, preventing its redeposition within the processing area and ensuring a clean and safe environment. This design optimizes the airflow path, improves dust emission efficiency, and further enhances the overall performance of the laser processing system.

[0046] In some embodiments, the partition 3 is detachably installed within the inner cavity, facilitating cleaning and maintenance. This design allows for easy removal of the partition 3 as needed to clean accumulated dust or replace the partition 3, ensuring long-term efficient operation of the equipment. Furthermore, the detachable partition 3 allows for flexible adjustment of its type to suit different processing requirements. Admittedly, in other embodiments, the partition 3 may also be integrally formed with the housing 1; this application does not limit this to such cases.

[0047] In detail, the partition 3 can be fixed in the inner cavity by bolts, pins, snap-fit, or slots. It is a conventional structure and will not be described in detail here.

[0048] This disclosure also relates to a laser processing apparatus, including the dark box as described above.

[0049] In detail, laser processing equipment includes a processing table, a laser, a galvanometer, and a darkroom. The processing table is used to place the workpiece to be processed, and the darkroom is attached above the workpiece. This is a standard structure and will not be described in detail here.

[0050] Finally, it should be noted that the above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A dark box, characterized in that, include: The housing has an inner cavity and an opening at the bottom, the opening communicating with the inner cavity; A laser field lens is mounted on the top of the housing; A partition is installed inside the inner cavity, dividing the inner cavity into two sub-cavities arranged vertically. The lower sub-cavity is connected to the opening. The partition is provided with a hollow structure for laser to pass through. An air outlet is located on the housing and communicates with the sub-cavity located below; An air inlet is located on the housing and communicates with the sub-cavity located below.

2. The dark box as described in claim 1, characterized in that, The partition is located near the bottom of the box.

3. The dark box as described in claim 1, characterized in that, It also includes an exhaust vent, which is located on the housing and communicates with the upper sub-cavity.

4. The dark box as described in claim 3, characterized in that, The exhaust vent is located near the partition.

5. The dark box as described in claim 1, characterized in that, The partition can be detachably installed inside the cavity.

6. The dark box as described in claim 1, characterized in that, The air outlet and the air inlet are arranged opposite each other at both ends of the lower sub-cavity.

7. The dark box as described in claim 6, characterized in that, The air outlet and the air inlet are located near the bottom of the housing.

8. The darkroom as described in claim 1, characterized in that, The air inlet is equipped with a dustproof screen.

9. The dark box as described in claim 1, characterized in that, The box is square in shape.

10. A laser processing device, characterized in that, Including the dark box as described in any one of claims 1 to 9.

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