Square fiber multifilament rod, arrangement method, arrangement device and application of square fiber multifilament rod

Abstract

The invention provides a square fiber multifilament rod, an arrangement method, an arrangement device and application of the square fiber multifilament rod. The method comprises the following steps: putting qualified square fiber monofilaments into an arrangement mold with a square inner contour of a radial section; an included angle of 45 degrees is formed between the inner side surface and the horizontal plane; the square fiber monofilaments are parallel to the axis; enabling the arrangement mold to vibrate, and automatically adjusting the positions of the square fiber monofilaments in the arrangement mold under the vibration condition to form an interlayer meshing structure; and an interlayer meshing structure is monitored on line, and after a preset arrangement standard is reached, the rod is bundled, and the square fiber multifilament rod is obtained. The technical problem to be solved is how to prepare the square fiber multifilament rod, so that square fiber monofilaments forming the square fiber multifilament rod are arranged more regularly and orderly, the structural defects of sliding dislocation, malposition, square fiber torsion and the like are effectively reduced, the quality and performance of MPO are guaranteed, the rod arrangement efficiency is improved, and the overall distortion rate of MPO is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of micro-hole array optical device manufacturing, and in particular to a square fiber multifilament rod, an arrangement method, an arrangement device and applications thereof. Background Art

[0002] Micropore array optical devices (MPO) are two-dimensional thin-sheet structures composed of millions of micron-scale hollow square glass-based capillaries. After spherical treatment, the micropores are accurately pointed to the center of the sphere, achieving focused imaging of grazing incident ultraviolet light, X-rays, etc., and play an important role in the field of X-ray and ultraviolet detection. The manufacturing process of MPO mainly involves glass rod and tube matching, square fiber monofilament drawing, square multifilament rod arrangement, square multifilament drawing, blank plate arrangement, hot melt pressing, optical processing, corrosion hole formation and spherical treatment; among them, the arrangement of square multifilament rods is crucial to the uniformity of the micropore array. Each square multifilament rod is composed of thousands of sub-millimeter square fiber monofilaments tightly stacked and arranged.

[0003] In the prior art, the manufacture of MPO requires the use of glass tubes with special properties. During the melting and processing of the glass tubes, defects such as stones, air lines, and streaks are prone to occur. Therefore, in the process of arranging the square fiber multifilament rods, the monofilaments containing the above defects need to be removed first; then, the selected square monofilaments are placed in a horizontally placed square mold for stacking and arranging layer by layer. However, there are two problems with the above process. One is that the reflected light cannot remove those micron-level defective monofilaments that cannot be observed by the naked eye, which greatly affects the quality of MPO; the second is that the fiber monofilaments are very thin, only 0.4 to 0.8 mm, and structural defects such as interlayer misalignment, incorrect placement, and square fiber twisting often occur when the monofilaments are placed; and as the number of arranged layers increases, such defects will gradually accumulate, such as the attached Figure 1 and attached Figure 2 As shown, the above structural defects cause the focus spot of ultraviolet and X-ray imaging of the microporous optical device prepared by the multifilament rod to deviate from the ideal cross-line focus, resulting in a serious decrease in detection efficiency. Summary of the invention

[0004] The main purpose of the present invention is to provide a square fiber multifilament rod, an arrangement method, an arrangement device and applications thereof. The technical problem to be solved is how to arrange a square fiber multifilament rod so that the square fiber monofilaments constituting the square fiber multifilament rod are arranged more regularly and orderly, and structural defects such as sliding dislocation, misalignment, and square fiber torsion are effectively reduced, so that the quality and performance of the MPO are guaranteed. At the same time, the present invention can also improve the rod arrangement efficiency, reduce the overall distortion rate of the MPO, and make the MPO more stable and reliable in performance, thereby being more suitable for practical use.

[0005] The purpose of the present invention and the technical problem to be solved are achieved by adopting the following technical solutions. According to a method for arranging square fiber multifilament rods proposed by the present invention, the method comprises the following steps:

[0006] S11 Take a square fiber monofilament of qualified quality and put it into an arrangement mold with a square inner contour in the radial cross section; the arrangement mold has openings at both ends and the axis is set horizontally; the inner side surface of the arrangement mold forms an angle of 45° with the horizontal plane; the square fiber monofilament is parallel to the axis;

[0007] S12 vibrates the arrangement mold, and the positions of the square fiber monofilaments in the arrangement mold are automatically adjusted under the vibration condition to form an interlayer meshing structure;

[0008] S13 monitors the interlayer meshing structure online, and after reaching a preset arrangement standard, bundles the rods to obtain a square fiber multifilament rod.

[0009] The purpose of the present invention and the solution to its technical problems can be further achieved by adopting the following technical measures.

[0010] Preferably, the aforementioned arrangement method comprises the following steps:

[0011] S21: taking square fiber monofilaments of qualified quality and placing them into an arrangement mold with a square inner contour in a radial cross section to a preset number of layers n, where n is a natural number ≥ 2;

[0012] S22 vibrates the arrangement mold, and the positions of the square fiber monofilaments in the arrangement mold are automatically adjusted under the vibration condition to form an interlayer meshing structure;

[0013] S23 monitors the interlayer meshing structure online and performs different steps according to the results:

[0014] If the interlayer meshing structure does not meet the preset standard, step S22 is executed;

[0015] If the interlayer meshing structure meets the preset standard, step S24 is executed;

[0016] S24 online monitors the total number of layers N of the interlayer meshing structure, N≥n; and performs different steps according to the result:

[0017] If the total number of layers N of the interlayer meshing structure is less than the preset standard, step S21 is executed;

[0018] If the total number of layers N of the interlayer meshing structure reaches a preset standard, a square fiber multifilament rod is obtained.

[0019] Preferably, in the aforementioned arrangement method, n=3.

[0020] Preferably, the aforementioned arrangement method, wherein the vibration also includes the step of blowing deionized air toward the square fiber monofilaments in the arrangement mold and / or cleaning the square fiber monofilaments in the arrangement mold.

[0021] Preferably, in the aforementioned arrangement method, the arrangement molds include at least two arranged in parallel; after the total number of layers N of the interlayer meshing structure reaches a preset standard, it also includes locking and fixing the interlayer meshing structure between the two arrangement molds by means of a clamp with a square radial cross-section.

[0022] Preferably, the aforementioned arrangement method, before taking the square fiber monofilaments of qualified quality and placing them into the arrangement mold with a square inner contour in the radial cross section, further comprises a step of selecting the square fiber monofilaments; specifically comprising:

[0023] S61 places a number of square fiber monofilaments to be selected into an arrangement mold;

[0024] S62 turns on a light source at one end of the square fiber monofilament to allow light to enter the square fiber monofilament;

[0025] S63 light is emitted from the other end of the square fiber monofilament to the imaging system, and the imaging system is used to observe whether there is an obvious difference in the light transmittance of the fiber monofilament, and the fiber monofilament with surface wear, knots or air line defects is removed.

[0026] The purpose of the present invention and the technical problem to be solved are achieved by adopting the following technical solutions. According to the present invention, a square fiber multifilament rod arrangement device is provided, which comprises:

[0027] A vibration table provided with a vibration controller;

[0028] At least two arrangement molds are arranged side by side on the vibration table; both ends of each arrangement mold are open, and the axis is arranged horizontally; the inner contour of the radial cross section of the arrangement mold is a square; the inner side surface of the arrangement mold forms an angle of 45° with the horizontal plane;

[0029] The online monitoring system is arranged at one end of the vibration table, close to the opening at the outermost end of the arrangement mold; the online monitoring system includes a magnifying glass and an observation display screen; the magnifying glass is connected to the observation display screen through a data line.

[0030] Preferably, the aforementioned arrangement device further comprises a light source; the light source is arranged at the other end of the vibration table, close to the opening at the other outermost end of the arrangement mold.

[0031] The purpose of the present invention and the technical problem to be solved are achieved by adopting the following technical solutions: A square fiber multifilament rod proposed by the present invention is arranged by the above-mentioned arrangement method.

[0032] The purpose of the present invention and the technical problem to be solved are achieved by adopting the following technical solutions: A micro-hole array optical device proposed in the present invention is made of the aforementioned square fiber multifilament rod.

[0033] By means of the above technical solution, the square fiber multifilament rod, arrangement method, arrangement device and application thereof proposed by the present invention have at least the following advantages:

[0034] The present invention proposes a square fiber multifilament rod, an arrangement method, an arrangement device and applications thereof, which arrange the square fiber filaments through a mold of a specific structure. The square fiber monofilaments tend to be densely stacked under the action of the downward component of force along the inclined surface in the mold at an angle of 45°, so that the adjacent square fiber filaments are arranged by side abutment. This structural design can make the arrangement of the fiber filaments more regular and orderly, and can also effectively reduce the occurrence of structural defects such as sliding dislocation, incorrect placement, and square fiber twisting. For the situation where individual fiber filaments with defects such as incorrect placement and the like cannot form a meshing structure, the present invention applies vibration to the arrangement mold for placing the fiber filaments, so that the square fiber monofilaments in the arrangement mold automatically adjust their positions under the vibration condition to form an interlayer meshing structure. The present invention cooperates the mold of a specific structure with the technical means of applying vibration so that the arranged square fiber filaments can Tight fit effectively avoids structural defects such as fiber twisting and / or sliding dislocation between fiber layers; further, the technical solution of the present invention is also equipped with real-time online monitoring, which observes the arrangement of the fiber filaments in real time. For individual fiber filaments that may have arrangement defects, the vibration time is extended or the vibration parameters are adjusted to make them adjust themselves to their original positions, forming a perfect meshing structure. Each adjacent fiber filament fits tightly with each other surface, thereby avoiding the accumulation of defects as the number of arrangement layers increases, and preparing a multifilament rod with a neat fiber arrangement structure, so that the subsequently prepared microporous optical device has excellent structural uniformity, effectively solving the problems of structural unevenness such as distortion, dislocation, and twisting of the microporous array, so that the focal spot of ultraviolet and X-ray imaging coincides with or is close to the ideal cross-line focus, reducing the overall distortion rate of MPO, improving the detection efficiency of MPO, and making MPO more stable and reliable in performance.

[0035] Furthermore, the technical solution of the present invention adopts a mold with a specific structure, an online monitoring system, and configures a specific light source to select the fiber filaments to be arranged. This method of selecting fiber filaments can detect fiber filaments with micron-level defects that are not observable to the naked eye, thereby effectively removing the defective fibers and preventing the fiber filaments arranged into multifilament rods from bringing in defects such as stones, air lines, stripes, etc., which affect their light transmittance and image transmission quality, thereby improving the qualified rate of square fiber filaments and greatly improving the quality of MPO.

[0036] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the defects of the arrangement of square fiber filaments in the prior art;

[0038] Figure 2 It is a schematic diagram of the actual arrangement of square fiber multifilament rods in the prior art;

[0039] Figure 3 The present invention provides an arrangement device for square fiber multifilament rods;

[0040] Figure 4a This is a schematic diagram of the square fiber multifilament rod bundling fixture of the present invention after assembly;

[0041] Figure 4b This is a schematic diagram of the components of the fixture for bundling square fiber multifilament rods of the present invention that have not yet been assembled;

[0042] Figure 5 Schematic diagram of the actual arrangement of the square fiber multifilament rods prepared by the present invention. DETAILED DESCRIPTION

[0043] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of a square fiber multifilament rod, an arrangement method, an arrangement device and its application, its specific implementation, structure, features and effects proposed by the present invention in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0044] The present invention provides a method for arranging square fiber multifilament rods, which comprises the following steps:

[0045] The first step is to take a square fiber monofilament of qualified quality and put it into an arrangement mold with a square profile in the radial section; the arrangement mold is as shown in the attached Figure 3As shown, each arrangement mold includes a through inner cavity with a square radial cross-section, which is open at both ends and the axis is arranged horizontally. This structural design is intended to enable the fiber filaments to pass through the two ends of the mold, so that the arrangement mold only serves as a bracket for the fiber filaments, only limiting the position of the fiber filaments in the radial space, but not limiting the position of the fiber filaments in the axial space; the arrangement mold includes a plurality of parallel arrangements, the purpose of which is to provide support for the fiber filaments at different axial positions to avoid vertical position deviation due to the long fiber filaments, so as to ensure that the fiber filaments are arranged regularly; the inner side surface of the arrangement mold of the present invention forms an angle of 45° with the horizontal plane; two adjacent inner side surfaces intersect each other vertically, and the intersection line is parallel to the axis of the mold, and a top angle of the arrangement mold is downward, and the two inner side surfaces forming the top angle are arranged to form a groove, and the square fiber monofilament is placed in the groove parallel to the axis of the mold. The present invention sets the arrangement mold as the above-mentioned specific structure, and its technical purpose is to make the square fiber monofilaments tend to be densely stacked under the action of the downward force along the inclined surface in the groove formed by the inner side surface at an inclined angle of 45°, so that adjacent square fiber filaments are arranged by side abutment, thereby making the arrangement of the fiber filaments more regular and orderly, and effectively reducing the occurrence of structural defects such as sliding dislocation of the fiber filaments, incorrect landing, and twisting of the square fibers.

[0046] The second step is to vibrate the arrangement mold so that the square fiber monofilaments placed in the arrangement mold automatically adjust their positions under vibration conditions to form an interlayer meshing structure; Figure 3 As shown, the arrangement molds are arranged side by side on a vibration table, and the vibration parameters such as amplitude and vibration frequency can be controlled by a vibration controller, so that the vibration parameters can be adjusted according to the specifications of the fiber filaments, so that the fiber filaments can be effectively and regularly placed, and defects such as broken wires caused by severe vibration can be avoided. The present invention uses a mold with a specific structure and a technical means of applying vibration to enable the arranged square fiber filaments to fit tightly, effectively avoiding structural defects such as fiber filament torsion and / or sliding dislocation between fiber filament layers.

[0047] The third step is to monitor the interlayer meshing structure in real time online, and after it reaches the preset arrangement standard, it is bundled and rod-tied to obtain a square fiber multifilament rod. The present invention observes the arrangement of fiber filaments in real time, and adjusts the individual fiber filaments that may have arrangement defects by extending the vibration time or adjusting the vibration parameters to make them adjust themselves to their positions, forming a perfect meshing structure, and each adjacent fiber filament is closely fitted to the surface, so that the accumulation of defects can be avoided as the number of arrangement layers increases, and a multifilament rod with a neat structure is arranged, so that the structure of the microporous optical device prepared later is uniform, effectively solving the problems of structural unevenness such as microporous array distortion, dislocation, and torsion, improving the detection efficiency of MPO, and making MPO more stable and reliable in performance.

[0048] In the above technical solution, the arrangement of the multifilament rods is decomposed by layers, and each n-layer arrangement is monitored online, and it is determined whether to adjust the position of the existing fiber filaments or continue to place the next n-layer fiber filaments according to the monitoring results, so that the arrangement defects of the fiber filaments can be eliminated in time to avoid the accumulation of arrangement defects and cause product quality problems. In order to better arrange the multifilament rods and avoid the accumulation of defects during the arrangement process and affect the product quality, the present invention preferably arranges the rods in steps, and the specific operations are as follows:

[0049] S21 takes square fiber monofilaments of qualified quality and puts them into an arrangement mold with a square inner contour in the radial section to a preset number of layers n, where n is a natural number ≥2.

[0050] S22 makes the arrangement mold vibrate, and the square fiber monofilaments in the arrangement mold automatically adjust their positions under the vibration condition to form an interlayer meshing structure.

[0051] S23 monitors the interlayer meshing structure online and performs different steps according to the results:

[0052] If the interlayer meshing structure does not meet the preset standard, that is, it is found during online monitoring that some individual fiber filaments may have arrangement defects, then step S22 is executed to extend the vibration time or adjust the vibration parameters so that the existing arranged fiber filaments slide back to their positions and arrange them regularly, forming a meshing structure in which adjacent fiber filaments abut against each other. If the interlayer meshing structure meets the preset standard, that is, all the arranged existing fiber filaments are arranged regularly, then step S24 is executed to check the number of arranged layers of the fiber filaments through the online monitoring system.

[0053] S24 online monitors the total number of layers N of the interlayer meshing structure, N≥n; and performs different steps according to the result:

[0054] If the total number of layers N of the interlayer meshing structure is less than the preset standard, that is, the arrangement of the multifilament rod is not completed, step S21 is executed to continue to place the next n layers of fiber filaments. If the total number of layers N of the interlayer meshing structure reaches the preset standard, it means that the arrangement of the multifilament rod is completed, that is, a square fiber multifilament rod is obtained.

[0055] In the above technical solution, in order to better balance the quality and efficiency of the multifilament rod arrangement, the present invention preferably arranges the units in n layers into three layers, that is, n=3. This setting can effectively adjust the placement defects through vibration, and will not cause defects such as broken wires due to the setting of vibration parameters. That is, vibration, monitoring, vibration... are performed every time three layers of fiber filaments are placed, so that the newly placed three layers of filaments are arranged regularly before the next three layers of filaments are arranged, thereby avoiding the accumulation of arrangement defects that are difficult to eliminate, effectively ensuring product quality; at the same time, frequent vibration and monitoring can be avoided, and work efficiency can be improved.

[0056] In the above technical solution, the adjustment of vibration parameters needs to be considered in combination with the diameter and length of the fiber filaments. The preferred working frequency and amplitude of the vibration table of the present invention can be adjusted steplessly to adapt to fiber filament arrangement rods of various specifications. Furthermore, the preferred vibration frequency of the present invention is ≤600Hz, and the amplitude is 0.1-0.5mm. The setting of the vibration parameters can meet the vibration placement of fiber monofilaments of different wire diameters; at the same time, the vibration placement can greatly improve the problem of low uniformity of the multifilament rod structure, reduce the influence of the operator's actions on the fiber multifilament rod, and greatly reduce the time for arranging the multifilament rods.

[0057] In the above technical scheme, in order to ensure the cleanliness of the fiber filaments, the present invention preferably starts the vibration and turns on the deionizing fan to blow deionized air toward the square fiber filaments in the arrangement mold; and / or arranges a special person to use a brush to perform cleaning operations to effectively remove impurities on the fiber filaments, so as to avoid defects caused by contamination of the fiber filaments into subsequent optical devices.

[0058] In the above technical solution, each arrangement mold includes two parts, upper and lower, which are designed separately; these two parts are structures with identical cross-sections of isosceles right triangles; when these two parts are tightly combined, they just form a complete square. When the number of fiber monofilaments arranged in layers is small, the fiber monofilaments can be placed and vibrated only through the lower grooves; when the fiber monofilaments are placed to a certain height, such as when the fiber monofilament placement height reaches about half of the mold cavity, the placement and vibration of the monofilaments require the upper and lower molds to be combined together to ensure the radial positioning of the monofilaments.

[0059] In the above technical solution, after the multifilament rods are arranged, in order to avoid the fiber filaments from sliding and disordering in position due to the bundling and rod binding operations, the present invention preferably uses a specially structured fixture to accurately bundle the fibers; the fixture structure is shown in the attached Figure 4a and attached Figure 4b As shown, in a specific embodiment of the present invention, the fixture used is a metal fixture; the fixture is composed of two parts, and the two parts are completely identical frame structures; when the two fixtures are tightly combined together, they just form a complete square. In this way, the fixture can fit perfectly with the fiber multifilament rod, ensuring that the fiber multifilament rod can ensure structural stability in any environment. As mentioned above, the arrangement mold includes a plurality of parallel arrangements; after the total number of layers N of the interlayer meshing structure reaches the preset standard, that is, after the arrangement of the fiber multifilament rod is completed, the present invention preferably places a fixture in the middle of each two arrangement molds, accurately clamps the two fixtures on the fiber multifilament rod, and fixes them with an elastic locking mechanism, so as to effectively fix the multifilament rod, stabilize its structure, and prevent the occurrence of structural dislocation, slippage, twisting, etc.

[0060] In order to ensure that the fiber filaments forming the square fiber multifilament rod are of qualified quality, the present invention preferably selects the fiber filaments through a fiber defect detection component before arranging the rods. The fiber defect detection component of the present invention includes a mold with a specific structure, an online monitoring system and a specific light source; the detection light source can emit light of different colors, such as white light, green light, blue light, etc. Along the axial direction of the mold, the light source is set on one side of the mold, and the online monitoring system is set on the other side of the mold. The specific selection steps are as follows:

[0061] S61: placing a plurality of square fiber monofilaments to be selected in an arrangement mold; in a specific embodiment of the present invention, the mold for selecting the fibers is the same as the mold for arranging the rods, and the two can be used together. The monofilaments are placed so that their axes are parallel to the axes of the mold.

[0062] S62 turns on the light source at one end of the square fiber monofilament to allow light to enter the square fiber monofilament.

[0063] S63 light is emitted from the other end of the square fiber monofilament to the imaging system, and the imaging system is used to observe whether there is an obvious difference in the transmittance of the fiber monofilaments. The square fiber monofilament with low transmittance is judged as a defective fiber and is removed.

[0064] In the above technical solution, when light is incident from one side of the fiber filament, it will be collected by the imaging system. When there are defects such as stones, air lines, stripes, etc. in the fiber monofilament, the light will be scattered or absorbed by these defects during the transmission process, resulting in a weakening of the light transmission performance. Therefore, it can be clearly observed on the imaging system that there are obvious differences in the transmittance of the fiber monofilament. At that time, the fiber monofilament with low transmittance can be judged as a defective fiber and removed.

[0065] The technical solution of the present invention adopts a mold with a specific structure, an online monitoring system, and configures a specific light source to select the fiber filaments to be arranged. The fiber monofilaments with micron-level defects that cannot be observed by the naked eye can be found through this wire picking method, thereby effectively removing the defective wires and avoiding the fiber filaments forming the multifilament rod from bringing in some defects such as stones, air lines, stripes, etc., which affect its light transmittance and image transmission quality, thereby improving the qualified rate of square fiber monofilaments and greatly improving the quality of MPO.

[0066] The present invention also provides a square fiber multifilament rod arrangement device, as shown in the attached Figure 3As shown, it includes a vibration table 4; the vibration table is electrically connected to a vibration controller 2 for setting the vibration parameters of the vibration table. The arrangement device of the square fiber multifilament rod also includes at least two arrangement molds 3; at least two arrangement molds are arranged side by side on the vibration table; the arrangement mold can be connected to the vibration table through a connecting piece, such as a bolt connection; since the amplitude is set very small in the technical solution of the present invention, the arrangement mold will not be displaced on the vibration table, so the arrangement mold can also be placed directly on the vibration table to keep its position unchanged by its own weight; the inner contour of the radial cross section of each arrangement mold is a square, with openings at both ends and the axis set horizontally; the inner side surface of the arrangement mold forms an angle of 45° with the horizontal plane; two adjacent inner side surfaces intersect each other vertically, and their intersection line is parallel to the mold axis, and one vertex of the arrangement mold is downward, forming two inner side surfaces of the vertex to form a groove. The arrangement device of the square fiber multifilament rod also includes an online monitoring system; the online monitoring system, also known as an imaging system, is arranged at one end of the vibration table, close to the opening at the outermost end of the arrangement mold; the online monitoring system includes a magnifying glass 5 and an observation display screen 6; the magnifying glass and the observation display screen are connected through a data cable; after the wires are placed and vibrated, one end of the multifilament rod is magnified with a magnifying glass, and the arrangement of each wire is observed on the observation display screen to see whether it is regular.

[0067] In the above technical solution, the arrangement device also includes a light source 1; the light source is arranged at the other end of the vibration table, close to the opening of the other outermost end of the arrangement mold; that is, the light source, a number of arrangement molds arranged in parallel, and an online monitoring system are arranged in sequence; before arranging the rods, the light source is turned on first, and the light is incident from one end of the monofilament, and is emitted from the other end of the monofilament after being transmitted by the monofilament. The exit end of the monofilament is magnified with a magnifying glass, and the transmission of each wire is observed by observing the display screen. It is clearly observed on the display screen that there is a significant difference in the transmittance of the fiber monofilament. At that time, the fiber monofilament with low transmittance is judged as a defective wire and removed. After the wire selection is completed, the qualified monofilament fiber wire is used for rod arrangement.

[0068] The present invention also provides a square fiber multifilament rod, wherein each monofilament constituting the square fiber multifilament rod is arranged regularly; adjacent monofilaments are in contact with each other to form a horizontally and vertically arranged multifilament rod, as shown in the attached Figure 5 As shown; this square fiber multifilament rod is formed by the aforementioned arrangement.

[0069] The present invention also proposes a micro-hole array optical device, which is made of the aforementioned square fiber multifilament rod. The multifilament rod arranged by the technical solution of the present invention has high fiber quality and neat fiber arrangement structure, and the obtained micro-hole array optical device has excellent structural uniformity, and has no structural unevenness problems such as micro-hole array distortion, dislocation, and torsion, thereby reducing the overall distortion rate of MPO, improving the detection efficiency of MPO, and making MPO more stable and reliable in performance.

[0070] The present invention also provides a single-filament picking method, which comprises the following steps:

[0071] S111: placing a plurality of monofilaments to be selected in an arrangement mold; the arrangement mold has openings at both ends and an axis arranged horizontally; the square fiber monofilaments are parallel to the axis;

[0072] S112 turns on a light source at one end of the monofilament to allow light to enter the monofilament;

[0073] S113 light is emitted from the other end of the monofilament to an imaging system, and the transmittance of the fiber monofilament is observed by the imaging system. The square fiber monofilament with low transmittance is determined as a defective fiber and is removed.

[0074] The present invention will be further described below in conjunction with specific embodiments, but this should not be construed as limiting the scope of protection of the present invention. Some non-essential improvements and adjustments made to the present invention by technicians in this field based on the above-mentioned contents of the present invention still fall within the scope of protection of the present invention.

[0075] Example 1

[0076] In this embodiment, a fiber monofilament with a diameter (distance from opposite sides) of 0.5 mm and a square radial cross section is arranged into a multifilament rod with a distance from opposite sides of 25.5 mm and a square radial cross section. Figure 3 The arrangement device of the square fiber multifilament rod shown is used to pick the wire and arrange the rods. The specific operation is as follows:

[0077] 1) Fiber screening. Turn on the light source and let it emit bright white light steadily. Place the fiber monofilaments in the arrangement mold in a manner parallel to the axis of the mold so that the light emitted by the light source can be transmitted from one end of the fiber monofilament to the other end. At the end where the light is emitted, magnify it with a magnifying glass and display it on the observation display screen; by visually observing the imaging system of the display screen, remove the fiber monofilaments with particularly obvious light transmittance reduction; repeat this operation until all the fiber monofilaments that need to be arranged are screened.

[0078] 2) Fiber filament arrangement rod. Place the arrangement mold on the vibration table, hold the screened fiber monofilaments manually, and place the fiber monofilaments in the arrangement mold in a manner parallel to the axis of the mold so that they fall smoothly. After arranging the three layers of fiber monofilaments, set the vibration parameters through the vibration controller as follows: adjust the amplitude to 0.2mm, set the vibration time to 20s, and start the vibration table. When the vibration table is turned on, the fiber monofilaments will vibrate according to the adjusted amplitude, thereby continuously adjusting the position of the fiber monofilaments themselves. In this process, if there are gaps between the fiber filaments, the fiber filaments will automatically fill the gaps through the vibration to achieve a dense stacking state. While turning on the vibration, turn on the deionized fan so that it blows air towards the fiber filaments, and arrange a special person to use a brush to clean the fiber monofilaments to effectively remove impurities on the fiber monofilaments to ensure the cleanliness of the fiber filaments. When the vibration is over, use the online monitoring system to observe the arranged fiber filaments to determine whether they have reached a dense stacking state. If the ideal state has not been achieved, the above vibration, blowing and cleaning operations need to be repeated, and adjustments and improvements need to be made continuously until the arrangement of the multifilament rods is finally completed. After adjusting the three layers of wire, repeat the above operations and proceed to the next three layers of monofilament rods until the fiber multifilament rods are arranged.

[0079] 3) Multifilament rod bundling. After the fiber multifilament rods are arranged, a clamp is placed between each two rod arrangement molds, the two clamps are accurately clamped on the fiber multifilament rods, and an elastic locking mechanism is used to fix them to effectively fix the multifilament rods.

[0080] The square fiber multifilament rod prepared by this embodiment has each monofilament arranged in a regular manner; the adjacent monofilaments are in contact with each other to form a horizontally and vertically arranged multifilament rod, as shown in the attached figure. Figure 5 As shown, there are no structural defects such as fiber twisting and inter-layer sliding dislocation of fiber filaments, and the structure has good uniformity.

[0081] The technical features in the claims and / or the specification of the present invention may be combined, and the combination is not limited to the combination obtained by reference in the claims. The technical solution obtained by combining the technical features in the claims and / or the specification is also within the protection scope of the present invention.

[0082] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A method for arranging square fiber multifilament rods, characterized in that: It includes the following steps: S11 Take a square fiber monofilament of qualified quality and put it into an arrangement mold with a square inner contour in the radial cross section; the arrangement mold has openings at both ends and the axis is set horizontally; the inner side surface of the arrangement mold forms an angle of 45° with the horizontal plane; the square fiber monofilament is parallel to the axis; S12 vibrates the arrangement mold, and the positions of the square fiber monofilaments in the arrangement mold are automatically adjusted under the vibration condition to form an interlayer meshing structure; S13 monitors the interlayer meshing structure online, and after reaching a preset arrangement standard, bundles the rods to obtain a square fiber multifilament rod.

2. The arrangement method according to claim 1, characterized in that: It includes the following steps: S21: taking square fiber monofilaments of qualified quality and placing them into an arrangement mold with a square inner contour in a radial cross section to a preset number of layers n, where n is a natural number ≥ 2; S22 vibrates the arrangement mold, and the positions of the square fiber monofilaments in the arrangement mold are automatically adjusted under the vibration condition to form an interlayer meshing structure; S23 monitors the interlayer meshing structure online and performs different steps according to the results: If the interlayer meshing structure does not meet the preset standard, step S22 is executed; If the interlayer meshing structure meets the preset standard, step S24 is executed; S24 online monitors the total number of layers N of the interlayer meshing structure, N≥n; and performs different steps according to the result: If the total number of layers N of the interlayer meshing structure is less than the preset standard, step S21 is executed; If the total number of layers N of the interlayer meshing structure reaches a preset standard, a square fiber multifilament rod is obtained.

3. The arrangement method according to claim 2, characterized in that: n＝3。 4. The arrangement method according to any one of claims 1 to 3, characterized in that: During the vibration, the method further includes blowing deionized air toward the square fiber monofilaments in the arrangement mold and / or cleaning the square fiber monofilaments in the arrangement mold.

5. The arrangement method according to any one of claims 1 to 3, characterized in that: The arrangement molds include at least two arranged in parallel; after the total number of layers N of the interlayer meshing structure reaches a preset standard, the interlayer meshing structure is locked and fixed between the two arrangement molds by a clamp with a square radial cross-section.

6. The arrangement method according to any one of claims 1 to 3, characterized in that: Before taking the square fiber monofilaments with qualified quality and putting them into the arrangement mold with a square inner contour in the radial cross section, the process also includes a step of selecting the square fiber monofilaments; specifically, the process includes: S61 places a number of square fiber monofilaments to be selected into an arrangement mold; S62 turns on a light source at one end of the square fiber monofilament to allow light to enter the square fiber monofilament; S63 light is emitted from the other end of the square fiber monofilament to the imaging system, and the imaging system is used to observe whether there is an obvious difference in the light transmittance of the fiber monofilament, and the fiber monofilament with surface wear, knots or air line defects is removed.

7. A square fiber multifilament rod arrangement device, characterized in that: It includes: A vibration table provided with a vibration controller; At least two arrangement molds are arranged side by side on the vibration table; both ends of each arrangement mold are open, and the axis is arranged horizontally; the inner contour of the radial cross section of the arrangement mold is a square; the inner side surface of the arrangement mold forms an angle of 45° with the horizontal plane; The online monitoring system is arranged at one end of the vibration table, close to the opening at the outermost end of the arrangement mold; the online monitoring system includes a magnifying glass and an observation display screen; the magnifying glass is connected to the observation display screen through a data line.

8. The arrangement device according to claim 7, characterized in that: It also includes a light source; the light source is arranged at the other end of the vibration table, close to the opening at the other outermost end of the arrangement mold.

9. A square fiber multifilament rod, characterized in that: It is arranged by the arrangement method described in any one of claims 1 to 6.

10. A micro-hole array optical device, characterized in that: It is made of the square fiber multifilament rod as claimed in claim 9.

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