Glass fiber tube rat-proof optical cable and preparation method thereof

Abstract

The invention belongs to the technical field of optical cables, and particularly relates to a glass fiber tube rat-proof optical cable and a preparation method thereof.The glass fiber tube rat-proof optical cable comprises a colored coated optical cable, the colored coated optical cable is wrapped with fiber paste, the fiber paste is wrapped with a loose tube, the loose tube is wrapped with a glass fiber column, and the glass fiber column is wrapped with a glass fiber layer. In the processing and production process of the optical cable, the glass fiber column is added in the optical cable, the glass fiber column is formed by stacking two glass fiber layers, the weaving density of the glass fiber layers is that the number of fibers per square centimeter is 50-200, the thickness is controlled to be 1-2 mm, and the optical cable has higher mechanical strength and better wear resistance; the biting of rodents can be more effectively resisted, and the mouse resisting effect is greatly improved; the optical cable is integrally formed, compact in structure, flat and smooth, high in tensile strength, free of metal structure, light in weight and convenient to lay, and construction cost is effectively saved.

Description

Technical Field

[0001] The invention relates to the technical field of optical cables, in particular to a glass fiber tube rat-proof optical cable and a preparation method thereof. Background Art

[0002] Optical Fiber Cable is manufactured to meet optical, mechanical or environmental performance specifications. It is a communication cable assembly that uses one or more optical fibers placed in an outer sheath as a transmission medium and can be used individually or in groups. Optical cables are mainly composed of optical fibers (optical fibers) and optical cable sheaths. A certain number of optical fibers are used in a certain way to form the inner core of the cable, which is covered by the outer sheath of the cable to achieve the transmission of optical signals. However, the existing optical cables still have the following technical problems when used: Optical cable rat prevention is a global problem, mainly because of the reasonable balance between the timeliness and economy of rat prevention and the difficulty of construction. In order to increase the rat prevention effect of the current optical cable, some optical cables mainly increase the rat prevention effect by setting a metal structure inside the optical cable. Metal reinforced rat prevention generally uses steel wire or high-hardness steel belt to armor rat prevention, but this method makes the optical cable bulky and difficult to bend and coil, and the exposed metal material bitten by rats is easy to cause lightning strikes, which is very unsafe. The overall weight of the optical cable is large and the laying cost is high; In order to increase the rat-proofing effect, some optical cables will add capsaicin or bittering agents inside the PE sheath, but this method is only effective for a short time and cannot maintain its effectiveness for a long time, so the rat-proofing effect is not significant enough.

[0003] Therefore, a glass fiber tube rat-proof optical cable and a preparation method thereof are proposed to solve the above-mentioned problems. Summary of the invention

[0004] The object of the present invention is to provide a glass fiber tube rat-proof optical cable and a preparation method thereof, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a glass fiber tube rat-proof optical cable, comprising a colored coated optical cable, the outer wrapping of the colored coated optical cable is provided with fiber paste, the outer wrapping of the fiber paste is provided with a loose tube, the outer wrapping of the loose tube is provided with a glass fiber column, and the outer wrapping of the glass fiber column is provided with a protective sleeve; The colored coated optical cable comprises a fiber core, a cladding and a coating layer, wherein the cladding is wrapped around the outside of the fiber core, and the coating layer is arranged outside the cladding.

[0006] Preferably, the diameter of the cladding is 125um.

[0007] Preferably, the diameter of the coating layer is 250 um.

[0008] Preferably, the glass fiber column is formed by stacking two glass fiber layers.

[0009] Preferably, the thickness of the glass fiber column is 1-2 mm.

[0010] Preferably, the weaving density of the glass fiber column is between 50 and 200 fibers per square centimeter.

[0011] A method for preparing a glass fiber tube rat-proof optical cable, the specific steps of the method for preparing the glass fiber tube rat-proof optical cable are as follows: Step 1, coloring: First, select or mix the ink according to the color of the product to be processed, stir the selected ink for 20-40 minutes, and adjust it into the corresponding color. If it is winter, use a heating device to heat it while stirring. The temperature of the heating device is controlled at 60-80 degrees Celsius. Heat the temperature of the ink to 45 degrees Celsius. After the treatment is completed, pour it into the ink tank; The bare optical fiber is driven to move through the ink tank by the transmission device. The ink adheres to the outside of the bare optical fiber and then enters the inside of the drying device. The temperature of the drying device is controlled at 50-60 degrees Celsius to dry the ink adhered to its surface. Step 2: Wrap the fiber paste and set the loose tube: Select the appropriate fiber filling paste, and use a dust-free cloth to clean the colored optical fiber to be processed, put the fiber paste into the preheating equipment to make it reach the appropriate working temperature. When the temperature of the fiber paste is preheated to 40-60 degrees Celsius, pour the preheated fiber paste into the coating tank, pass the optical fiber through the coating tank, so that its surface is evenly covered with fiber paste. It is necessary to control the speed of the optical fiber through the coating tank to ensure that the fiber paste is evenly coated. Use a scraper or roller to remove excess fiber paste to ensure uniform coating thickness; put the loose tube material into the preheating equipment to make its temperature reach 180-220 degrees Celsius. Preheating can reduce The viscosity of the material is adjusted to make it easier to extrude and form. The parameters of the extruder, including temperature, speed and pressure, are adjusted to ensure that the loose tube material can be extruded evenly. A suitable mold is selected according to the diameter of the optical cable and installed on the extruder. The preheated loose tube material is fed into the extruder. The loose tube material is evenly extruded through the extruder to form a loose tube. The extruded loose tube is evenly coated on the glass fiber layer of the optical cable. The thickness of the loose tube is controlled by adjusting the speed and pressure of the extruder. The optical cable coated with the loose tube is cooled through a cooling tank. The cooling tank is usually cooled by cold water or air to quickly solidify the loose tube material. Step 3: Wrap the glass fiber column: prepare the glass fiber, remove dust and impurities on the surface of the glass fiber, pass the glass fiber yarn or tape through the impregnation tank to make it evenly impregnated with resin, ensure that the resin fully penetrates into the glass fiber, set up the winding machine and adjust the speed and tension of the winding machine, pass the resin-impregnated glass fiber yarn or tape through the winding machine, and evenly wind it on the surface of the fiber paste, use a scraper or roller to remove excess resin, ensure that the coating thickness is uniform, pass the optical cable wrapped with the glass fiber layer through the dryer for curing, and use a cold air blower to cure and cool the resin. When the first glass fiber layer is wrapped, repeat the operation again to wrap two layers of glass fiber in total; Step 4. Set the outer sheath: Put the outer sheath material into the preheating equipment to make its temperature reach 180-220 degrees Celsius, send the preheated outer sheath material into the extruder, extrude the outer sheath material evenly through the extruder to form an outer sheath layer, and evenly cover the extruded outer sheath on the loose tube. The thickness and uniformity of the outer sheath can be controlled by adjusting the speed and pressure of the extruder. Cool the optical cable coated with the outer sheath through the cooling trough, use the traction equipment to slowly pull the optical cable to ensure that the outer sheath is evenly coated and not twisted, reel the processed optical cable, perform self-inspection according to the process regulations, fill in the production card, and indicate the cable model, specification, length, production date, and quality.

[0012] Compared with the prior art, the present invention has the following beneficial effects: During the production process of this optical cable, a glass fiber column is added inside the optical cable, and the glass fiber column is formed by stacking two layers of glass fiber. The weaving density of the glass fiber layer is 50 to 200 fibers per square centimeter, and the thickness is controlled at 1-2mm. It has higher mechanical strength and better wear resistance, can more effectively resist the gnawing of rodents, and greatly improves the resistance effect against mice; The optical cable is formed in one piece, has a tighter structure, is flat and smooth, has stronger tensile resistance, has no metal structure, is light in weight, is easy to lay, and effectively saves construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the optical cable of the present invention; Figure 2 Schematic diagram of the structural composition of colored coated optical cable.

[0014] In the figure: 1 colored coated optical cable, 2 fiber paste, 3 loose tube, 4 glass fiber column, 5 protective sleeve, 6 fiber core, 7 cladding, 8 coating layer. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0017] See also Figure 1-2 , the present invention provides a technical solution: A glass fiber tube rat-proof optical cable comprises a colored coated optical cable 1, the colored coated optical cable 1 is externally wrapped with a fiber paste 2, the fiber paste 2 is externally wrapped with a loose tube 3, the loose tube 3 is externally wrapped with a glass fiber column 4, and the glass fiber column 4 is externally wrapped with a protective cover 5; The colored coated optical cable 1 comprises a core 6 , a cladding 7 and a coating 8 . The cladding 7 is wrapped around the outside of the core 6 , and the coating 8 is arranged on the outside of the cladding 7 .

[0018] The diameter of the cladding 7 is 125 um.

[0019] The diameter of the coating layer 8 is 250 um.

[0020] The glass fiber column 4 is formed by stacking two glass fiber layers.

[0021] The thickness of the glass fiber column 4 is 1-2 mm.

[0022] The weaving density of the glass fiber column 4 is between 50 and 200 fibers per square centimeter.

[0023] A method for preparing a glass fiber tube rat-proof optical cable, the specific steps of the preparation method of the glass fiber tube rat-proof optical cable are as follows: Step 1, coloring: First, select or mix the ink according to the color of the product to be processed, stir the selected ink for 20-40 minutes, and adjust it into the corresponding color. If it is winter, use a heating device to heat it while stirring. The temperature of the heating device is controlled at 60-80 degrees Celsius. Heat the temperature of the ink to 45 degrees Celsius. After the treatment is completed, pour it into the ink tank; The ink is made of acrylic paint or polyurethane paint. Acrylic paint has good adhesion and durability, and polyurethane paint has good wear resistance and anti-aging properties. After the optical fiber is colored, it needs to be tested for adhesion, durability and transparency. The adhesion test is to ensure that the coating is firmly attached to the surface of the optical fiber and will not fall off easily; the durability test is to test the wear resistance, corrosion resistance and aging resistance of the coating. The transparency check is for some applications, which need to maintain a certain degree of transparency to facilitate the detection of defects inside the optical fiber.

[0024] The bare optical fiber is driven to move through the ink tank by the transmission device. The ink adheres to the outside of the bare optical fiber and then enters the inside of the drying device. The temperature of the drying device is controlled at 50-60 degrees Celsius to dry the ink adhered to its surface. Step 2: Wrap the fiber paste and set the loose tube: Select the appropriate fiber filling paste. The filling paste usually uses thixotropic grease with good waterproofness and lubricity. Use a dust-free cloth to clean the colored optical fiber to be treated. Put the fiber paste into the preheating device to make it reach a suitable working temperature. When the temperature of the fiber paste is preheated to 40-60 degrees Celsius (preheating can reduce the viscosity of the fiber paste, making it easier to flow and evenly coated), pour the preheated fiber paste into the coating tank, pass the optical fiber through the coating tank, and evenly cover its surface with fiber paste. It is necessary to control the speed of the optical fiber passing through the coating tank to ensure that the fiber paste is evenly coated. Use a scraper or roller to remove excess fiber paste to ensure uniform coating thickness; After wrapping the fiber paste, it is necessary to check whether the fiber paste coating is uniform, bubble-free and crack-free, conduct an adhesion test to ensure that the fiber paste is firmly attached to the surface of the optical fiber, and conduct performance tests such as waterproofing and corrosion resistance to ensure that the quality of the fiber paste meets the requirements.

[0025] Put the loose tube material into the preheating equipment to make its temperature reach 180-220 degrees Celsius. Preheating can reduce the viscosity of the material, making it easier to extrude and shape. Adjust the parameters of the extruder, including temperature, speed and pressure, to ensure that the loose tube material can be evenly extruded. Select a suitable mold according to the diameter of the optical cable and install it on the extruder. Feed the preheated loose tube material into the extruder. The loose tube material is evenly extruded through the extruder to form a loose tube. The extruded loose tube is evenly coated on the glass fiber layer of the optical cable. The thickness of the loose tube is controlled by adjusting the speed and pressure of the extruder. The optical cable coated with the loose tube is cooled through a cooling tank. The cooling tank is usually cooled by cold water or air to quickly solidify the loose tube material. The loose tube is made of PBT material.

[0026] Step 3: Wrap the glass fiber column: prepare the glass fiber, remove dust and impurities on the surface of the glass fiber, pass the glass fiber yarn or tape through the impregnation tank to make it evenly impregnated with resin, ensure that the resin fully penetrates into the glass fiber, set up the winding machine and adjust the speed and tension of the winding machine, pass the resin-impregnated glass fiber yarn or tape through the winding machine, and evenly wind it on the surface of the fiber paste, use a scraper or roller to remove excess resin, ensure that the coating thickness is uniform, pass the optical cable wrapped with the glass fiber layer through the dryer for curing, and use a cold air blower to cure and cool the resin. When the first glass fiber layer is wrapped, repeat the operation again to wrap two layers of glass fiber in total; Step 4. Set the outer sheath: Put the outer sheath material into the preheating equipment to make its temperature reach 180-220 degrees Celsius, send the preheated outer sheath material into the extruder, extrude the outer sheath material evenly through the extruder to form an outer sheath layer, and evenly cover the extruded outer sheath on the loose tube. The thickness and uniformity of the outer sheath can be controlled by adjusting the speed and pressure of the extruder. Cool the optical cable coated with the outer sheath through the cooling trough, use the traction equipment to slowly pull the optical cable to ensure that the outer sheath is evenly coated and not twisted, reel the processed optical cable, perform self-inspection according to the process regulations, fill in the production card, and indicate the cable model, specification, length, production date, and quality.

[0027] The outer sheath is usually made of polyethylene (PE), polyvinyl chloride (PVC), polyurethane (PU) or other polymer materials.

[0028] Embodiment 1: The specific steps of the preparation method of the glass fiber tube rat-proof optical cable are as follows: Step 1, coloring: First, select or mix the ink according to the color of the product to be processed, stir the selected ink for 20 minutes, and adjust it into the corresponding color. If it is winter, use a heating device to heat it while stirring. The temperature of the heating device is controlled at 60 degrees Celsius. Heat the temperature of the ink to 45 degrees Celsius. After the treatment is completed, pour it into the ink tank; The bare optical fiber is driven to move through the ink tank by the transmission device. The ink adheres to the outside of the bare optical fiber and then enters the inside of the drying device. The temperature of the drying device is controlled to 50 degrees Celsius to dry the ink adhered to its surface. Step 2: Wrap the fiber paste and set the loose tube: Select the appropriate fiber filling paste, and use a dust-free cloth to clean the colored optical fiber to be processed. Put the fiber paste into the preheating equipment to make it reach the appropriate working temperature. When the temperature of the fiber paste is preheated to 40 degrees Celsius, pour the preheated fiber paste into the coating tank, pass the optical fiber through the coating tank, and evenly cover its surface with fiber paste. It is necessary to control the speed of the optical fiber through the coating tank to ensure that the fiber paste is evenly coated. Use a scraper or roller to remove excess fiber paste to ensure uniform coating thickness; put the loose tube material into the preheating equipment to make its temperature reach 180 degrees Celsius. Preheating can reduce the material viscosity, making it easier to extrude and shape, adjusting the parameters of the extruder, including temperature, speed and pressure, to ensure that the loose tube material can be extruded evenly, selecting a suitable mold according to the diameter of the optical cable and installing it on the extruder, feeding the preheated loose tube material into the extruder, extruding the loose tube material evenly through the extruder to form a loose tube, and evenly coating the extruded loose tube on the glass fiber layer of the optical cable, controlling the thickness of the loose tube by adjusting the speed and pressure of the extruder, and cooling the optical cable coated with the loose tube through a cooling tank, which is usually cooled by cold water or air to quickly solidify the loose tube material; Step 3: Wrap the glass fiber column: prepare the glass fiber, remove dust and impurities on the surface of the glass fiber, pass the glass fiber yarn or tape through the impregnation tank to make it evenly impregnated with resin, ensure that the resin fully penetrates into the glass fiber, set up the winding machine and adjust the speed and tension of the winding machine, pass the resin-impregnated glass fiber yarn or tape through the winding machine, and evenly wind it on the surface of the fiber paste, use a scraper or roller to remove excess resin, ensure that the coating thickness is uniform, pass the optical cable wrapped with the glass fiber layer through the dryer for curing, and use a cold air blower to cure and cool the resin. When the first glass fiber layer is wrapped, repeat the operation again to wrap two layers of glass fiber in total; Step 4: Set the outer sheath: put the outer sheath material into the preheating equipment to make its temperature reach 180 degrees Celsius, send the preheated outer sheath material into the extruder, extrude the outer sheath material evenly through the extruder to form an outer sheath layer, and evenly cover the extruded outer sheath on the loose tube. The thickness and uniformity of the outer sheath can be controlled by adjusting the speed and pressure of the extruder. Cool the optical cable coated with the outer sheath through the cooling trough, use the traction equipment to slowly pull the optical cable to ensure that the outer sheath is evenly coated and not twisted, reel the processed optical cable, conduct self-inspection according to the process regulations, fill in the production card, and indicate the cable model, specification, length, production date, and quality; Embodiment 2: The specific steps of the preparation method of the glass fiber tube rat-proof optical cable are as follows: Step 1, coloring: First, select or mix the ink according to the color of the product to be processed, stir the selected ink for 30 minutes, and adjust it into the corresponding color. If it is winter, use a heating device to heat it while stirring. The temperature of the heating device is controlled at 70 degrees Celsius. Heat the temperature of the ink to 45 degrees Celsius. After the treatment is completed, pour it into the ink tank; The bare optical fiber is driven to move through the ink tank by the transmission device. The ink adheres to the outside of the bare optical fiber and then enters the inside of the drying device. The temperature of the drying device is controlled to 55 degrees Celsius to dry the ink adhered to its surface. Step 2: Wrap the fiber paste and set the loose tube: Select the appropriate fiber filling paste, and use a dust-free cloth to clean the colored optical fiber to be processed. Put the fiber paste into the preheating equipment to make it reach the appropriate working temperature. When the temperature of the fiber paste is preheated to 50 degrees Celsius, pour the preheated fiber paste into the coating tank, pass the optical fiber through the coating tank, and evenly cover its surface with fiber paste. It is necessary to control the speed of the optical fiber through the coating tank to ensure that the fiber paste is evenly coated. Use a scraper or roller to remove excess fiber paste to ensure uniform coating thickness; put the loose tube material into the preheating equipment to make its temperature reach 200 degrees Celsius. Preheating can reduce the material viscosity, making it easier to extrude and shape, adjusting the parameters of the extruder, including temperature, speed and pressure, to ensure that the loose tube material can be extruded evenly, selecting a suitable mold according to the diameter of the optical cable and installing it on the extruder, feeding the preheated loose tube material into the extruder, extruding the loose tube material evenly through the extruder to form a loose tube, and evenly coating the extruded loose tube on the glass fiber layer of the optical cable, controlling the thickness of the loose tube by adjusting the speed and pressure of the extruder, and cooling the optical cable coated with the loose tube through a cooling tank, which is usually cooled by cold water or air to quickly solidify the loose tube material; Step 3: Wrap the glass fiber column: prepare the glass fiber, remove dust and impurities on the surface of the glass fiber, pass the glass fiber yarn or tape through the impregnation tank to make it evenly impregnated with resin, ensure that the resin fully penetrates into the glass fiber, set up the winding machine and adjust the speed and tension of the winding machine, pass the resin-impregnated glass fiber yarn or tape through the winding machine, and evenly wind it on the surface of the fiber paste, use a scraper or roller to remove excess resin, ensure that the coating thickness is uniform, pass the optical cable wrapped with the glass fiber layer through the dryer for curing, and use a cold air blower to cure and cool the resin. When the first glass fiber layer is wrapped, repeat the operation again to wrap two layers of glass fiber in total; Step 4: Set the outer sheath: put the outer sheath material into the preheating equipment to make its temperature reach 200 degrees Celsius, send the preheated outer sheath material into the extruder, extrude the outer sheath material evenly through the extruder to form an outer sheath layer, and evenly cover the extruded outer sheath on the loose tube. The thickness and uniformity of the outer sheath can be controlled by adjusting the speed and pressure of the extruder. Cool the optical cable coated with the outer sheath through the cooling trough, use the traction equipment to slowly pull the optical cable to ensure that the outer sheath is evenly coated and not twisted, reel the processed optical cable, conduct self-inspection according to the process regulations, fill in the production card, and indicate the cable model, specification, length, production date, and quality; Embodiment 3: The specific steps of the preparation method of the glass fiber tube rat-proof optical cable are as follows: Step 1, coloring: First, select or mix the ink according to the color of the product to be processed, stir the selected ink for 40 minutes, and adjust it into the corresponding color. If it is winter, use a heating device to heat it while stirring. The temperature of the heating device is controlled at 80 degrees Celsius. Heat the temperature of the ink to 45 degrees Celsius. After the treatment is completed, pour it into the ink tank; The bare optical fiber is driven to move through the ink tank by the transmission device. The ink adheres to the outside of the bare optical fiber and then enters the inside of the drying device. The temperature of the drying device is controlled at 50-60 degrees Celsius to dry the ink adhered to its surface. Step 2: Wrap the fiber paste and set the loose tube: Select the appropriate fiber filling paste, and use a dust-free cloth to clean the colored optical fiber to be processed. Put the fiber paste into the preheating equipment to make it reach the appropriate working temperature. When the temperature of the fiber paste is preheated to 60 degrees Celsius, pour the preheated fiber paste into the coating tank, pass the optical fiber through the coating tank, and evenly cover its surface with fiber paste. It is necessary to control the speed of the optical fiber through the coating tank to ensure that the fiber paste is evenly coated. Use a scraper or roller to remove excess fiber paste to ensure uniform coating thickness; put the loose tube material into the preheating equipment to make its temperature reach 220 degrees Celsius. Preheating can reduce the material viscosity, making it easier to extrude and shape, adjusting the parameters of the extruder, including temperature, speed and pressure, to ensure that the loose tube material can be extruded evenly, selecting a suitable mold according to the diameter of the optical cable and installing it on the extruder, feeding the preheated loose tube material into the extruder, extruding the loose tube material evenly through the extruder to form a loose tube, and evenly coating the extruded loose tube on the glass fiber layer of the optical cable, controlling the thickness of the loose tube by adjusting the speed and pressure of the extruder, and cooling the optical cable coated with the loose tube through a cooling tank, which is usually cooled by cold water or air to quickly solidify the loose tube material; Step 3: Wrap the glass fiber column: prepare the glass fiber, remove dust and impurities on the surface of the glass fiber, pass the glass fiber yarn or tape through the impregnation tank to make it evenly impregnated with resin, ensure that the resin fully penetrates into the glass fiber, set up the winding machine and adjust the speed and tension of the winding machine, pass the resin-impregnated glass fiber yarn or tape through the winding machine, and evenly wind it on the surface of the fiber paste, use a scraper or roller to remove excess resin, ensure that the coating thickness is uniform, pass the optical cable wrapped with the glass fiber layer through the dryer for curing, and use a cold air blower to cure and cool the resin. When the first glass fiber layer is wrapped, repeat the operation again to wrap two layers of glass fiber in total; Step 4. Set the outer sheath: Put the outer sheath material into the preheating equipment to make its temperature reach 220 degrees Celsius, send the preheated outer sheath material into the extruder, extrude the outer sheath material evenly through the extruder to form an outer sheath layer, and evenly cover the extruded outer sheath on the loose tube. The thickness and uniformity of the outer sheath can be controlled by adjusting the speed and pressure of the extruder. Cool the optical cable coated with the outer sheath through the cooling trough, use the traction equipment to slowly pull the optical cable to ensure that the outer sheath is evenly coated and not twisted, reel the processed optical cable, perform self-inspection according to the process regulations, fill in the production card, and indicate the cable model, specification, length, production date, and quality. Rat-proof performance test: 1 meter of the optical cable prepared by the method of the present application and the conventional optical cable currently used on the market were taken, placed in an environment of 100°C for aging for two weeks, and then tested according to the standard JB / T10696.10-2011 "Mechanical and physical and chemical properties test methods for wires and optical cables Part 10; Rat gnawing test"; the optical cable in the present application was hung in a rat breeding cage, recorded as Group A, and the optical cable currently used on the market was hung in another rat breeding cage, recorded as Group B; Six adult mice of larger size were placed in Group A and Group B, 3 male controls and 3 magnetic mice, and the mice in both groups were fed normally every day; The experiment lasted for 2 weeks. After the experiment was over, the biting conditions of the two sections of optical cables were observed, and the total bitten area of ​​the samples, the bitten area as a percentage of the total area, and the protection rate were recorded and analyzed to obtain the results. A﹟:1.5, 0.50, 99.50; B﹟:211, 71.65, 28.35; The results of this test can prove that the optical cable in this application can better prevent mice from gnawing, so that the optical cable can be better protected and used for a longer time.

[0029] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A glass fiber tube rodent-proof optical cable, comprising a colored coated optical cable (1), characterized in that: The colored coated optical cable (1) is externally wrapped with fiber paste (2), the fiber paste (2) is externally wrapped with a loose tube (3), the loose tube (3) is externally wrapped with a glass fiber column (4), and the glass fiber column (4) is externally wrapped with a protective sleeve (5); The colored coated optical cable (1) comprises a fiber core (6), a cladding (7) and a coating layer (8), wherein the cladding (7) is wrapped around the outside of the fiber core (6), and the coating layer (8) is arranged on the outside of the cladding (7).

2. The glass fiber tube rat-proof optical cable according to claim 1, characterized in that: The diameter of the cladding (7) is 125 um.

3. The glass fiber tube rat-proof optical cable according to claim 1, characterized in that: The diameter of the coating layer (8) is 250 um.

4. The glass fiber tube rat-proof optical cable according to claim 1, characterized in that: The glass fiber column (4) is formed by stacking two layers of glass fiber.

5. The glass fiber tube rat-proof optical cable according to claim 1, characterized in that: The thickness of the glass fiber column (4) is 1-2 mm.

6. The glass fiber tube rat-proof optical cable according to claim 1, characterized in that: The weaving density of the glass fiber column (4) is between 50 and 200 fibers per square centimeter.

7. A method for preparing a glass fiber tube rat-proof optical cable as claimed in any one of claims 1 to 6, characterized in that: The specific steps of the preparation method of the glass fiber tube rat-proof optical cable are as follows: Step 1, coloring: First, select or mix the ink according to the color of the product to be processed, stir the selected ink for 20-40 minutes, and adjust it into the corresponding color. If it is winter, use a heating device to heat it while stirring. The temperature of the heating device is controlled at 60-80 degrees Celsius. Heat the temperature of the ink to 45 degrees Celsius. After the treatment is completed, pour it into the ink tank; The bare optical fiber is driven to move through the ink tank by the transmission device. The ink adheres to the outside of the bare optical fiber and then enters the inside of the drying device. The temperature of the drying device is controlled at 50-60 degrees Celsius to dry the ink adhered to its surface. Step 2: Wrap the fiber paste and set the loose tube: Select the appropriate fiber filling paste, and use a dust-free cloth to clean the colored optical fiber to be processed, put the fiber paste into the preheating equipment to make it reach the appropriate working temperature. When the temperature of the fiber paste is preheated to 40-60 degrees Celsius, pour the preheated fiber paste into the coating tank, pass the optical fiber through the coating tank, so that its surface is evenly covered with fiber paste. It is necessary to control the speed of the optical fiber through the coating tank to ensure that the fiber paste is evenly coated. Use a scraper or roller to remove excess fiber paste to ensure uniform coating thickness; put the loose tube material into the preheating equipment to make its temperature reach 180-220 degrees Celsius. Preheating can reduce The viscosity of the material is adjusted to make it easier to extrude and form. The parameters of the extruder, including temperature, speed and pressure, are adjusted to ensure that the loose tube material can be extruded evenly. A suitable mold is selected according to the diameter of the optical cable and installed on the extruder. The preheated loose tube material is fed into the extruder. The loose tube material is evenly extruded through the extruder to form a loose tube. The extruded loose tube is evenly coated on the glass fiber layer of the optical cable. The thickness of the loose tube is controlled by adjusting the speed and pressure of the extruder. The optical cable coated with the loose tube is cooled through a cooling tank. The cooling tank is usually cooled by cold water or air to quickly solidify the loose tube material. Step 3: Wrap the glass fiber column: prepare the glass fiber, remove dust and impurities on the surface of the glass fiber, pass the glass fiber yarn or tape through the impregnation tank to make it evenly impregnated with resin, ensure that the resin fully penetrates into the glass fiber, set up the winding machine and adjust the speed and tension of the winding machine, pass the resin-impregnated glass fiber yarn or tape through the winding machine, and evenly wind it on the surface of the fiber paste, use a scraper or roller to remove excess resin, ensure that the coating thickness is uniform, pass the optical cable wrapped with the glass fiber layer through the dryer for curing, and use a cold air blower to cure and cool the resin. When the first glass fiber layer is wrapped, repeat the operation again to wrap two layers of glass fiber in total; Step 4. Set the outer sheath: Put the outer sheath material into the preheating equipment to make its temperature reach 180-220 degrees Celsius, send the preheated outer sheath material into the extruder, extrude the outer sheath material evenly through the extruder to form an outer sheath layer, and evenly cover the extruded outer sheath on the loose tube. The thickness and uniformity of the outer sheath can be controlled by adjusting the speed and pressure of the extruder. Cool the optical cable coated with the outer sheath through the cooling trough, use the traction equipment to slowly pull the optical cable to ensure that the outer sheath is evenly coated and not twisted, reel the processed optical cable, perform self-inspection according to the process regulations, fill in the production card, and indicate the cable model, specification, length, production date, and quality.

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