Light-tight tube handling device and method

Abstract

The application provides a light-proof pipe processing device and method, and belongs to the light-proof pipe field. The device and method solve the problems of difficult polishing and difficult light leakage detection of an ultra-long and small-diameter light-proof pipe. The light-proof pipe processing device comprises a light-proof pipe fixing mechanism, a light source mechanism and a polishing mechanism. The light-proof pipe fixing mechanism comprises a fastening assembly for fixing the light-proof pipe. The light source mechanism is arranged on one side of the light-proof pipe and used for injecting light into the light-proof pipe. The polishing mechanism comprises a driver, a rod connected to a rotating end of the driver, and a polishing head assembly connected to a far end of the rod. The diameter of the polishing head assembly is greater than the inner diameter of the light-proof pipe. The polishing head assembly comprises a flexible layer capable of being compressed in the radial direction of the light-proof pipe and a polishing layer sleeved on the periphery of the flexible layer. The flexible layer is used for supporting the polishing layer to adhere to the inner wall of the light-proof pipe when polishing the inner wall of the light-proof pipe. A brush coating mechanism is used for brushing and coating light-proof paint on the inner wall of the light-proof pipe. The device and method are mainly used for polishing and light-proof detection of the light-proof pipe.

Description

Technical Field

[0001] This invention belongs to the field of light-shielding tubes, and in particular relates to a light-shielding tube processing device and method. Background Technology

[0002] With the stringent requirements of special high-performance equipment on the environment through which working light passes, some pipe fittings have been required to be opaque, leading to the development of light-shielding pipes.

[0003] Light-shielding tubes use a light-shielding paint on the inner wall of the tube to minimize the reflection of incident light while ensuring that external light does not enter the tube. However, light-shielding tubes with a length of 3000mm and a diameter of 50mm-100mm are considered ultra-long, small-diameter glass fiber reinforced polymer-based light-shielding tubes. This presents significant challenges in the treatment of the inner wall, the application of the light-shielding paint, and the detection of light leakage. The small diameter and ultra-long length make it impossible to operate normally with ordinary tools.

[0004] Before applying light-shielding paint to ultra-long, small-diameter light-shielding tubes, sanding the inner wall is crucial. However, the characteristics of ultra-long, small-diameter light-shielding tubes present technical challenges for sanding. If the diameter is too large, the sanding head cannot penetrate deep into the tube. If the sanding head is set too small, its durability will be poor and the sanding efficiency will be low. Summary of the Invention

[0005] In view of this, the present invention aims to provide a light-shielding tube processing device and method to solve the problems of difficult polishing of ultra-long, small-diameter light-shielding tubes and difficulty in light leakage detection.

[0006] To achieve the above objectives, according to one aspect of the present invention, a light-shielding tube processing apparatus is provided, comprising:

[0007] A light-shielding tube fixing mechanism, including fastening components for fixing the light-shielding tube;

[0008] The light source mechanism is located on one side of the light-shielding tube and is used to direct light into the light-shielding tube.

[0009] A grinding mechanism includes a driver, a rod connected to the rotating end of the driver, and a grinding head assembly connected to the distal end of the rod. The diameter of the grinding head assembly is larger than the inner diameter of the light-shielding tube. The grinding head assembly includes a flexible layer that can be compressed radially along the light-shielding tube and a grinding layer sleeved around the periphery of the flexible layer. The flexible layer is used to support the grinding layer to adhere to the inner wall of the light-shielding tube when grinding the inner wall of the light-shielding tube.

[0010] A brushing mechanism is used to apply light-shielding paint to the inner wall of the light-shielding tube.

[0011] Furthermore, the light-shielding tube fixing mechanism also includes a base, and the fastening component is connected to the base.

[0012] Furthermore, the fastening assembly is generally annular and includes a lower fastening ring and an upper fastening ring that are connected to each other, with one end of the base connected to the lower fastening ring.

[0013] Furthermore, the light source mechanism includes a light source support base, a light source fixing ring, and a light source. One end of the light source support base is connected to the light source fixing ring, the light source fixing ring is connected to the light source, and the light from the light source is coaxial with the light shield.

[0014] Furthermore, the rod includes a driver connector, a hollow grinding rod, and a grinding head connector. One end of the driver connector is connected to the rotating end of the driver, and the other end is connected to the hollow grinding rod. The other end of the hollow grinding rod is connected to the grinding head connector.

[0015] Furthermore, the grinding head assembly also includes a connecting rod and an inner core. One end of the connecting rod is connected to the grinding head connector, and the other end is connected to the inner core. The flexible layer is sleeved on the peripheral wall of the inner core.

[0016] Furthermore, the brushing mechanism includes a handheld part, a hollow roller brush rod, a roller brush fixing member, and a roller brush assembly. One end of the hollow roller brush rod is connected to the handheld part, and the other end is connected to one end of the roller brush fixing member. The other end of the roller brush fixing member is connected to the roller brush assembly.

[0017] Furthermore, the roller brush assembly includes a roller brush connecting rod, a bristle roller, and a base roller. One end of the roller brush connecting rod is connected to the roller brush fixing member, and the other end is connected to the base roller. The bristle roller is coaxially coupled to the peripheral wall of the base roller.

[0018] According to another aspect of the present invention, a method for applying light-shielding paint using the above-described light-shielding tube treatment device is provided, comprising the following steps: immersing a roller brush assembly into a prepared light-shielding paint, controlling the amount of light-shielding paint contained in the roller brush holder so that the paint does not flow when the roller brush holder is suspended, then applying the paint to the inner wall of the light-shielding tube within a certain time period, repeating the dipping and brushing process until all inner walls are evenly coated with light-shielding paint, constituting one coat. Multiple coats may be applied as required, with each coat allowed to dry slightly before applying the next coat, until all coats are completed.

[0019] According to another aspect of the present invention, a light transmittance detection method using the above-described light-shielding tube processing device is provided, comprising the following steps:

[0020] S1. Fix the light-proof tube, after it has been coated with light-proof paint, in a relatively dark place;

[0021] S2. Place the light source mechanism at the opening on one side of the light-shielding tube and let the light enter the light-shielding tube;

[0022] S3. Rotate the light-blocking tube and observe whether there is any light leakage;

[0023] S4. Use a brush to coat the areas where light leaks until there is no light leakage from the light-blocking tube. The inspection and repair are then complete.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. This device uses a flexible layer to support the grinding layer. This allows the grinding head assembly to enter the light-shielding tube and the grinding layer to adhere well to the inner wall of the light-shielding tube, provided that the diameter of the grinding head assembly is larger than the inner diameter of the light-shielding tube. This not only allows for the grinding of small-diameter light-shielding tubes but also prevents the grinding head assembly from being excessively worn.

[0026] 2. This device uses a hollow grinding rod to connect the grinding head and the driver, which reduces the weight of the overall grinding mechanism. Because the light-shielding rod is relatively long, using a hollow grinding rod will reduce the overall weight. When grinding by hand, it will reduce the load on the operator. When the machine is used for support, it will also reduce power consumption. The length of the hollow grinding rod can be slightly longer than half the length of the light-shielding tube. This way, grinding from both sides once will completely cover the entire length of the light-shielding tube.

[0027] 3. This device uses a light source to coaxially incident light into the light-shielding tube and rotates the tube to detect whether there is light transmission. Combined with a brushing mechanism to apply light-shielding paint, it can ensure good application of the paint and reduce the occurrence of light leakage defects. Attached Figure Description

[0028] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0029] Figure 1 This is a diagram showing the relative positions of the light-shielding tube fixing mechanism and the light source mechanism described in this invention.

[0030] Figure 2 As described in this invention Figure 1 The right view;

[0031] Figure 3 As described in this invention Figure 1 The left view;

[0032] Figure 4 This is a schematic diagram of the grinding mechanism described in this invention;

[0033] Figure 5 As described in this invention Figure 4 A magnified view of part A;

[0034] Figure 6 As described in this invention Figure 4 A magnified view of part B;

[0035] Figure 7 As described in this invention Figure 4 A magnified view of part C;

[0036] Figure 8 This is a schematic diagram of the brushing mechanism described in this invention;

[0037] Figure 9 This is a schematic diagram of the structure of the roller brush assembly described in this invention;

[0038] Figure 10 This is a cross-sectional view of the light-shielding tube described in this invention;

[0039] Figure 11 As described in this invention Figure 10 A magnified view of part D.

[0040] Light-shielding tube fixing mechanism 1; base 1-1; lower fastening ring 1-2; upper fastening ring 1-3; light source mechanism 2; light source support base 2-1; light source fixing ring 2-2; light source 2-3; grinding mechanism 3; driver 3-1; driver connector 3-2; hollow grinding rod 3-3; grinding head connector 3-4; grinding head assembly 3-5; connecting rod 3-5-1; inner core 3-5-2; flexible layer 3-5-3; grinding layer 3-5-4; brushing mechanism 4; handheld part 4-1; hollow roller brush rod 4-2; roller brush fixing part 4-3; roller brush assembly 4-4; roller brush connecting rod 4-4-1; brush roller 4-4-2; base roller 4-4-3; light-shielding tube 5; platform 6. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0042] It should be noted that the descriptions of "left," "right," "left side," "right side," "upper part," "lower part," "top," and "bottom" in this invention are defined based on the orientation or positional relationships shown in the accompanying drawings. They are merely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the described structure must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In the description of this invention, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Referring to the accompanying drawings, this embodiment is described. According to one aspect of the present invention, a light-shielding tube processing apparatus is provided, comprising:

[0045] The light-shielding tube fixing mechanism 1 includes a fastening component for fixing the light-shielding tube 5; after the light-shielding tube 5 is fixed by the fastening component, it is convenient to grind the inner wall of the light-shielding tube 5 and to apply light-shielding paint to the ground inner wall.

[0046] The light source mechanism 2 is positioned on one side of the light-shielding tube 5 to direct light into the tube. It is important to note that regardless of the arrangement of the light source mechanism 2, the light must be coaxial, entering from one end of the light-shielding tube 5 and exiting from the other. This ensures complete light transmission within the tube, facilitating a comprehensive view of the tube during light leakage testing, resulting in high efficiency. If necessary, the corresponding fastening components can be made of transparent material to allow for observation of light leakage even when the tube cannot be rotated. Both the light-shielding tube fixing mechanism 1 and the light source mechanism 2 are mounted on the platform 6. The flatness of the platform 6 ensures that the light-shielding tube 5 and the light source are coaxial after installation.

[0047] The polishing mechanism 3 includes a driver 3-1, a rod connected to the rotating end of the driver 3-1, and a polishing head assembly 3-5 connected to the distal end of the rod. The diameter of the polishing head assembly 3-5 is larger than the inner diameter of the light-shielding tube 5. The polishing head assembly 3-5 includes a flexible layer 3-5-3 that can be compressed radially along the light-shielding tube 5 and a polishing layer 3-5-4 sleeved around the flexible layer 3-5-3. When the flexible layer 3-5-3 is used to polish the inner wall of the light-shielding tube 5, it supports the polishing layer 3-5-4 to adhere to the inner wall of the light-shielding tube 5. When grinding the inner wall of the light-shielding tube 5, the actuator 3-1 drives the rod to rotate, which in turn drives the coaxially arranged grinding head assembly 3-5 to rotate. Because a flexible layer 3-5-3 that can be compressed radially is provided inside the grinding head assembly 3-5, even if the overall diameter of the grinding head assembly 3-5 is larger than the inner diameter of the light-shielding tube 5, by reasonably compressing the flexible layer 3-5-3, the grinding head assembly 3-5 can be inserted into the light-shielding tube 5 to grind its inner wall. During the grinding process, the flexible layer 3-5-3 provides support, ensuring that the grinding layer 3-5-4 remains in contact with the inner wall of the light-shielding tube 5 during rotational grinding, thus maintaining a high level of grinding efficiency. For the flexible layer 3-5-3, a flexible soft foam layer can be used. Flexible soft foam is readily available and inexpensive, reducing replacement costs. For the sanding layer 3-5-4, sandpaper or similar materials can be selected, with the appropriate roughness chosen based on the specific sanding requirements. For the light-shielding tube 5 to be processed in this application, a roughness of around 60-120 grit is generally used. After sanding to the required standard, compressed air is used to blow away the sanding dust from the inner wall of the tube, and then the inner surface is wiped with a special cleaning agent before proceeding to the light-shielding paint coating stage. For the specific selection of the actuator 3-1, the most economical option is a hand drill.

[0048] The brushing mechanism 4 is used to brush the light-shielding paint onto the inner wall of the light-shielding tube 5.

[0049] In this embodiment, the light-shielding tube fixing mechanism 1 further includes a base 1-1, and the fastening assembly is connected to the base 1-1. The fastening assembly is generally annular and includes a lower fastening ring 1-2 and an upper fastening ring 1-3 connected to each other. One end of the base 1-1 is connected to the lower fastening ring 1-2. Specifically, the lower fastening ring 1-2 and the upper fastening ring 1-3 can be connected by bolts or by snap-fit, and the connection method can be selected according to actual needs. Alternatively, sliding ball bearings can be provided inside the lower fastening ring 1-2 and the upper fastening ring 1-3, which, while satisfying the overall need for fixing the light-shielding tube 5, allows the light-shielding tube 5 to rotate to a certain extent along its own axis. This allows the light-shielding tube 5 to be rotated for observation when there are light leakage defects in the light-shielding paint. The rotation flexibility should not be too large to prevent the rotation of the light-shielding tube 5 from affecting the grinding process. Alternatively, additional clamping components can be used to further fix the light-shielding tube 5, thereby ensuring that the light-shielding tube 5 can be fixed during the grinding stage. When there is a light leakage defect in the light-shielding paint, the light-shielding tube 5 can be rotated to facilitate the observation of light leakage.

[0050] In this embodiment, the light source mechanism 2 includes a light source support base 2-1, a light source fixing ring 2-2, and a light source 2-3. One end of the light source support base 2-1 is connected to the light source fixing ring 2-2, the light source fixing ring 2-2 is connected to the light source 2-3, and the light from the light source 2-3 is coaxial with the light shielding tube 5.

[0051] In this embodiment, the rod includes a driver connector 3-2, a hollow grinding rod 3-3, and a grinding head connector 3-4. One end of the driver connector 3-2 is connected to the rotating end of the driver 3-1, and the other end is connected to the hollow grinding rod 3-3. The other end of the hollow grinding rod 3-3 is connected to the grinding head connector 3-4. The hollow grinding rod 3-3 is designed with a hollow structure, which can well adapt to the working conditions of the ultra-long, small-diameter light-shielding tube 5. Because the light-shielding tube 5 is long and has a small diameter, a longer length is required for grinding it, which necessitates a longer cantilever structure to support the grinding head. Using a hollow grinding rod can reduce the overall weight, thus reducing the load on the operator or the machine. For the material selection of the hollow grinding rod 3-3, epoxy carbon fiber thin-walled tube can be selected, which can meet the structural strength requirements and reduce the overall weight. Regarding the length selection of the hollow grinding rod 3-3, if it is too long, it will increase the cantilever length and inevitably cause deformation, affecting the grinding effect. Therefore, the length of the hollow grinding rod 3-3 is set to be slightly longer than half the length of the light-shielding tube 5. During the grinding process, the hollow grinding rod 3-3 is inserted into the grinding head assembly from both sides of the light-shielding tube 5 for grinding. This results in high grinding efficiency; the same light-shielding tube 5 only requires two grinding passes to complete the grinding work. It also overcomes the drawbacks of excessive cantilever length, achieving both high grinding efficiency and precision. Both the driver connector 3-2 and the grinding head connector 3-4 can be made of machined metal. They can be connected to the hollow grinding rod 3-3 by adhesive bonding, or by clips or bolts. However, clips or bolts can easily cause loosening when the cantilever is too long. Adhesive bonding is the optimal method. By designing both the driver connector 3-2 and the grinding head connector 3-4 as stepped cylinders, the hollow grinding rod 3-3 fits onto the driver connector 3-2 and the grinding head connector 3-4 and engages at the stepped section. This adhesive bonding method provides a reliable connection, and the connection process is simple and efficient.

[0052] In this embodiment, the grinding head assembly 3-5 further includes a connecting rod 3-5-1 and an inner core 3-5-2. One end of the connecting rod 3-5-1 is connected to the grinding head connector 3-4, and the other end is connected to the inner core 3-5-2. The flexible layer 3-5-3 is sleeved on the peripheral wall of the inner core 3-5-2. The connecting rod 3-5-1 can be connected to the grinding head connector 3-4 by means of a snap-fit ​​or bolts, depending on the actual needs. The inner core 3-5-2 can be made of wood, and its shape can be cylindrical or cuboid. A cylindrical shape facilitates the coaxiality of the inner core 3-5-2 and the rotating end of the driver, while a cuboid shape can improve the adhesion between it and the flexible layer 3-5-3, depending on the actual needs.

[0053] In this embodiment, the brushing mechanism 4 includes a handheld part 4-1, a hollow roller brush rod 4-2, a roller brush fixing member 4-3, and a roller brush assembly 4-4. One end of the hollow roller brush rod 4-2 is connected to the handheld part 4-1, and the other end is connected to one end of the roller brush fixing member 4-3. The other end of the roller brush fixing member 4-3 is connected to the roller brush assembly 4-4. The hollow form of the hollow roller brush rod 4-2 is also based on the consideration of reducing the weight of the cantilever. A rubber sleeve or similar material can be provided on the outside of the handheld part 4-1 to improve the comfort of holding and increase friction, making it more secure for the user to grip. The roller brush fixing member 4-3 and the hollow roller brush rod 4-2 can also be connected by clips, bolts, or adhesive. For the adhesive connection, refer to the connection form between the hollow grinding rod 3-3 and the driver connector 3-2, which will not be described in detail here.

[0054] In this embodiment, the roller brush assembly 4-4 includes a roller brush connecting rod 4-4-1, a brush roller 4-4-2, and a base roller 4-4-3. One end of the roller brush connecting rod 4-4-1 is connected to the roller brush fixing component 4-3, and the other end is connected to the base roller 4-4-3. The brush roller 4-4-2 is coaxially coupled to the peripheral wall of the base roller 4-4-3. The roller brush connecting rod 4-4-1 and the roller brush fixing component 4-3 are connected by bolts. Specifically, threads are provided on the roller brush connecting rod 4-4-1, and bolts and threads are used on both sides of the base roller 4-4-3 to fix the base roller 4-4-3 between two double bolts. This fixing method is easy to obtain materials for and has a reliable connection, reducing costs. The dimensions of the brush roller 4-4-2, especially its outer diameter, are generally about one-third to one-half of the inner diameter of the light-shielding tube body. Existing roller brushes can be purchased and modified or made in-house.

[0055] According to another aspect of the present invention, a method for applying light-shielding paint using the above-described light-shielding tube treatment device is provided, characterized by comprising the following steps: immersing the roller brush assembly 4-4 into the prepared light-shielding paint, controlling the amount of light-shielding paint contained in the roller brush fixing member 4-3 such that the paint does not flow when the roller brush fixing member 4-3 is suspended, then applying the paint to the inner wall of the light-shielding tube 5 within a certain time period, repeating the dipping and brushing until all inner walls are evenly coated with light-shielding paint, constituting one coat. Multiple coats are applied as required, with each coat allowed to dry slightly before applying the next coat, until all coats are completed.

[0056] According to another aspect of the present invention, a light transmittance detection method using the above-described light-shielding tube processing device is provided, comprising the following steps:

[0057] S1. Fix the light-shielding tube 5, coated with light-shielding paint, in a relatively dim location. Specifically, fix the light-shielding tube 5 between the lower fastening ring 1-2 and the upper fastening ring 1-3. To increase the stability of the light-shielding tube 5, at least two sets of lower fastening rings 1-2 and upper fastening rings 1-3 are installed along the axial direction of the light-shielding tube 5, which can improve the fixing stability of the light-shielding tube 5. The tube is placed in a relatively dim location to observe whether there is any light leakage.

[0058] S2. Place the light source mechanism 2 at one end of the light-shielding tube 5 and direct the light into the light-shielding tube 5. The light enters from one end of the light-shielding tube 5 and exits from the other end, allowing observation of the light-shielding tube 5 along its entire length and improving observation efficiency. A high-powered flashlight can be used for the light source mechanism 2.

[0059] S3. Rotate the light-shielding tube 5 and observe whether there is light leakage. The choice here depends on the actual needs. Whether the light-shielding tube 5 can be rotated depends on the specific structure of the lower fastening ring 1-2 and the upper fastening ring 1-3. If it is fixed, the lower fastening ring 1-2 and the upper fastening ring 1-3 can be made of transparent material. In this way, the light-shielding tube 5 can be tested for light leakage without rotating it.

[0060] S4. Use the brushing mechanism 4 to coat the light-leaking areas until there is no light leakage in the light-blocking tube 5. The inspection and repair are then complete.

[0061] The embodiments of the present invention disclosed above are merely illustrative of the invention. These embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A light-shielding tube processing device, characterized in that, include: The light-shielding tube fixing mechanism (1) includes a fastening assembly for fixing the light-shielding tube (5); The light source mechanism (2) is set on one side of the light-shielding tube (5) for incident light into the light-shielding tube (5). The light source mechanism (2) includes a light source support base (2-1), a light source fixing ring (2-2), and a light source (2-3). One end of the light source support base (2-1) is connected to the light source fixing ring (2-2), and the light source fixing ring (2-2) is connected to the light source (2-3). The light from the light source (2-3) is coaxial with the light-shielding tube (5). The grinding mechanism (3) includes a driver (3-1), a rod connected to the rotating end of the driver (3-1), and a grinding head assembly (3-5) connected to the far end of the rod. The diameter of the grinding head assembly (3-5) is larger than the inner diameter of the light-shielding tube (5). The grinding head assembly (3-5) includes a flexible layer (3-5-3) that can be compressed radially along the light-shielding tube (5) and a grinding layer (3-5-4) sleeved on the periphery of the flexible layer (3-5-3). When the flexible layer (3-5-3) is used to grind the inner wall of the light-shielding tube (5), it supports the grinding layer (3-5-4) to adhere to the inner wall of the light-shielding tube (5). The brushing mechanism (4) is used to brush the light-shielding paint onto the inner wall of the light-shielding tube (5); The rod includes a driver connector (3-2), a hollow grinding rod (3-3), and a grinding head connector (3-4). One end of the driver connector (3-2) is connected to the rotating end of the driver (3-1), and the other end is connected to the hollow grinding rod (3-3). The other end of the hollow grinding rod (3-3) is connected to the grinding head connector (3-4). The grinding head assembly (3-5) further includes a connecting rod (3-5-1) and an inner core (3-5-2). One end of the connecting rod (3-5-1) is connected to the grinding head connector (3-4), and the other end is connected to the inner core (3-5-2). The flexible layer (3-5-3) is sleeved on the peripheral wall of the inner core (3-5-2).

2. The light-shielding tube processing device according to claim 1, characterized in that: The light-shielding tube fixing mechanism (1) also includes a base (1-1), and the fastening component is connected to the base (1-1).

3. The light-shielding tube processing device according to claim 2, characterized in that: The fastening assembly is generally annular and includes a lower fastening ring (1-2) and an upper fastening ring (1-3) that are connected to each other. One end of the base (1-1) is connected to the lower fastening ring (1-2).

4. The light-shielding tube processing device according to claim 1, characterized in that: The brushing mechanism (4) includes a handheld part (4-1), a hollow roller brush rod (4-2), a roller brush fixing member (4-3), and a roller brush assembly (4-4). One end of the hollow roller brush rod (4-2) is connected to the handheld part (4-1), and the other end is connected to one end of the roller brush fixing member (4-3). The other end of the roller brush fixing member (4-3) is connected to the roller brush assembly (4-4).

5. The light-shielding tube processing device according to claim 4, characterized in that: The roller brush assembly (4-4) includes a roller brush connecting rod (4-4-1), a brush roller (4-4-2), and a base roller (4-4-3). One end of the roller brush connecting rod (4-4-1) is connected to the roller brush fixing member (4-3), and the other end is connected to the base roller (4-4-3). The brush roller (4-4-2) is coaxially coupled to the peripheral wall of the base roller (4-4-3).

6. A method for applying light-shielding paint using a light-shielding tube treatment device as described in claim 1, 2, 3, 4, or 5, characterized in that, The process includes the following steps: Immerse the roller brush assembly (4-4) in the prepared light-shielding paint, and control the amount of light-shielding paint contained in the roller brush holder (4-3) so that the light-shielding paint does not flow when the roller brush holder (4-3) is suspended. Apply the paint to the inner wall of the light-shielding tube (5) within a certain time. Repeat dipping and brushing until all inner walls are evenly covered with light-shielding paint to complete one coat. Apply multiple coats as required, and wait for the paint film to dry between each coat before applying the next coat until multiple coats are completed.

7. A method for detecting light transmittance using a light-shielding tube processing device as described in claim 1, 2, 3, 4, or 5, characterized in that, Includes the following steps: S1. Fix the light-proof tube (5) coated with light-proof paint in a relatively dark place; S2. Place the light source mechanism (2) at the opening of one side of the light-shielding tube (5) and let the light enter the light-shielding tube (5); S3. Rotate the light-blocking tube (5) and observe whether there is any light leakage. S4. Use the brushing mechanism (4) to brush the light-leaking area until there is no light leakage in the light-blocking tube (5). The inspection and repair are then completed.

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