A device for manufacturing a silica coaxial cable and a method of manufacturing the same

Abstract

The application relates to the technical field of cable processing, in particular to a silicon dioxide coaxial cable preparation device and a preparation method thereof. The device comprises a base, a hollow tank, a material conveying pipe, a first valve, a filling mechanism and a sealing and limiting mechanism. The material conveying pipe is fixedly connected with the hollow tank, the first valve is installed on the material conveying pipe, and the sealing and limiting mechanism comprises an upper limiting assembly and a lower limiting assembly. The lower limiting assembly comprises a limiting plug, the limiting plug is fixedly connected with the base, a mounting through hole is formed in the limiting plug, the upper limiting assembly comprises a hollow plug, a limiting ring and a plurality of connecting rods, the limiting ring is fixedly connected with the hollow plug through the connecting rods, and a center conductor passes through the limiting ring. The sealing and limiting mechanism is used for limiting and fixing an outer conductor pipe and the center conductor, automatically filling a gap mixture between the outer conductor pipe and the center conductor, improving the filling efficiency of the mixture, and further improving the processing efficiency of the silicon dioxide coaxial cable.

Description

Technical Field

[0001] This application relates to the field of cable processing technology, and in particular to a silica coaxial cable preparation apparatus and preparation method. Background Technology

[0002] Coaxial cable is a type of wire or signal transmission line consisting of a center conductor, an insulation layer, an outer conductor layer, and a sheath layer arranged sequentially from the inside out. It is used for transmitting analog and digital signals. Currently, coaxial cables are mainly used in industries such as power, data communication, urban rail transit, automobiles, and shipbuilding.

[0003] In the existing technology of manufacturing silica coaxial cables, the process involves first feeding silica and other mixtures into an extruder, and then controlling the extrusion of the mixture to generate a mixed gel state of organic and inorganic substances. Next, the mixed gel state is chemically foamed, and then the chemically foamed mixed gel is sintered at high temperature to remove organic additives. Then, an insulation layer is coated on the surface of the center conductor, and the insulation-coated center conductor is inserted into the outer conductor layer, or the outer conductor layer is processed on the surface of the insulation-coated center conductor. Finally, the high-temperature sintered silica layer is fitted onto the outer conductor layer and drawn to form a silica coaxial cable.

[0004] In the manufacturing process of the aforementioned silica coaxial cables, silica and other mixed materials need to be extruded and molded using an extruder, and the silica layer is then applied to the outer conductor layer. This results in low installation efficiency of the silica layer, which affects the processing efficiency of the silica coaxial cables. Summary of the Invention

[0005] To improve the processing efficiency of silicon dioxide coaxial cables, this application provides a silicon dioxide coaxial cable preparation apparatus and a preparation method thereof.

[0006] In a first aspect, this application provides a silicon dioxide coaxial cable manufacturing apparatus, which adopts the following technical solution:

[0007] A silica coaxial cable manufacturing apparatus includes a base, a hollow tank, a conveying pipe, a first valve, a packing mechanism, and a sealing and limiting mechanism.

[0008] The conveying pipe is fixedly connected to the hollow tank, and the conveying pipe communicates with the inner cavity of the hollow tank;

[0009] The first valve is installed on the conveying pipe;

[0010] The outer conductor tube is detachably and fixedly connected between the conveying pipe and the base, and the outer conductor tube is coaxially arranged with the conveying pipe;

[0011] The sealing and limiting mechanism includes an upper limit component and a lower limit component;

[0012] The lower limit assembly includes a limit plug, which is fixedly connected to the base and coaxially arranged with the feed pipe. One end of the limit plug extends into the inner cavity of the outer conductor tube, and the limit plug is sealed and abuts against the outer conductor tube.

[0013] The limiting plug has a mounting through hole for the center conductor to pass through, and the mounting through hole is coaxially arranged with the limiting plug;

[0014] The upper limit assembly includes a hollow plug, a limit ring, and multiple connecting rods;

[0015] The hollow plug is coaxially connected to the conveying pipe, and the end of the conveying pipe away from the limiting plug is sealed against the inner wall of the hollow plug.

[0016] The limiting ring and the hollow plug are coaxially arranged, and the limiting ring and the hollow plug are fixedly connected by the connecting rod. A flow gap is left between two adjacent connecting rods for the mixing material to pass through.

[0017] The center conductor is positioned to pass through the limiting ring;

[0018] The filling mechanism includes a vacuum pump and a vacuum pumping assembly. The vacuum pump is connected to the base, and the vacuum pumping assembly is connected to the material delivery pipe. The filling mechanism is used to fill the gap between the outer conductor pipe and the central conductor with a mixture.

[0019] By adopting the above technical solution, firstly, one end of the central conductor is inserted into the mounting through hole, and the other end of the central conductor is inserted into the limiting ring. Then, one end of the outer conductor tube is installed into the limiting plug, so that one end of the limiting plug extends into the inner cavity of the outer conductor tube, and the limiting plug is in sealed contact with the outer conductor tube, while the other end is in sealed contact with the inner wall of the hollow plug, thereby fixing the position of the central conductor and the outer conductor tube. Then, the mixture is put into the hollow tank, the first valve is adjusted to close, and the filling mechanism is adjusted to fill the gap between the outer conductor tube and the central conductor. The designed silica coaxial cable preparation device facilitates the limiting and fixing of the outer conductor tube and the central conductor through the sealing and limiting mechanism, and realizes the automatic filling of the mixture between the outer conductor tube and the central conductor through the filling mechanism, improving the filling efficiency of the mixture between the outer conductor tube and the central conductor, thereby improving the processing efficiency of the silica coaxial cable.

[0020] Optionally, the packing mechanism includes a vacuum pump and a vacuum pumping assembly;

[0021] The vacuum assembly includes a vacuum tube, a horizontal tube, and a second valve;

[0022] The horizontal tube is fixedly connected to the conveying pipe, and one end of the horizontal tube is connected to the inner cavity of the conveying pipe, while the other end is closed.

[0023] One end of the vacuum tube is connected to the vacuum pump, and the other end is connected to the horizontal tube, and the horizontal tube communicates with the inner cavity of the vacuum tube. The first valve is located between the horizontal tube and the hollow tank.

[0024] The second valve is installed on the horizontal pipe and is located between the vacuum pipe and the feed pipe.

[0025] By adopting the above technical solution, firstly, one end of the central conductor is inserted into the mounting through hole, and the other end of the central conductor is inserted into the limiting ring. Then, one end of the outer conductor tube is installed into the limiting plug, so that one end of the limiting plug extends into the inner cavity of the outer conductor tube, and the limiting plug and the outer conductor tube are sealed together, while the other end is sealed together with the inner wall of the hollow plug, thereby fixing the position of the central conductor and the outer conductor tube. Then, the mixture is put into the hollow tank, the first valve is adjusted to close, the second valve is opened, and the vacuum pump is turned on. Under the action of the vacuum pump, the air in the gap between the outer conductor tube and the central conductor moves into the inner cavity of the horizontal tube, and the air in the inner cavity of the horizontal tube moves into the inner cavity of the vacuum tube, thereby fixing the position of the central conductor tube and the outer conductor tube. The cavity is evacuated, then the second valve and vacuum pump are closed, and the first valve is opened. Due to the vacuum negative pressure in the gap between the outer conductor tube and the central conductor, the mixture in the hollow tank is transported along the conveying pipe to the gap between the outer conductor tube and the central conductor. As the pressure between the gap between the outer conductor tube and the central conductor balances with the external air pressure, the filling action of the mixture gradually slows down. The above steps are repeated until the gap between the outer conductor tube and the central conductor is completely filled. The designed filling mechanism creates an internal and external pressure difference between the gap between the outer conductor tube and the central conductor and the outside by evacuating the cavity between the outer conductor tube and the central conductor. This allows the mixture to automatically fill the gap between the outer conductor tube and the central conductor, improving the filling efficiency of the mixture between the outer conductor tube and the central conductor.

[0026] Optionally, multiple sets of vacuum pumping components are provided, and the multiple sets of vacuum pumping components are evenly distributed along the circumferential direction of the feed pipe.

[0027] By adopting the above technical solution, the designed multiple sets of vacuum pumping components facilitate the improvement of vacuum pumping efficiency in the gap cavity between the outer conductor tube and the central conductor.

[0028] Optionally, the vacuum tube includes a fixed section and a flexible section that are fixedly connected. The end of the fixed section away from the flexible section is connected to the vacuum pump, and the end of the flexible section away from the fixed section is connected to the horizontal pipe. The second valve is located between the vacuum tube and the feed pipe.

[0029] By adopting the above technical solution, the segmented design of the fixed section and the flexible section allows for easy adjustment of the height of the limiting plug and the conveying pipe through the flexible section, which in turn facilitates the installation of the outer conductor tube and the center conductor. At the same time, it facilitates the installation of outer conductor tubes and center conductors of different lengths, thereby facilitating the processing of silicon dioxide coaxial cables.

[0030] Optionally, the cross-sectional area of ​​the limiting plug gradually decreases from high to low, and the top of the limiting plug extends into the inner cavity of the outer conductor tube; the minimum diameter of the limiting plug is smaller than the inner diameter of the outer conductor tube, and the maximum diameter of the limiting plug is larger than the inner diameter of the outer conductor tube.

[0031] By adopting the above technical solution, the limiting plug, which is set in the shape of a frustum, is convenient for limiting the outer conductor tubes of different diameters, so as to achieve single-end sealing and contact of the outer conductor tubes of different diameters.

[0032] Optionally, a first sealing gasket is provided on the side wall of the limiting plug. The first sealing gasket includes an integrally connected horizontal part and an inclined part. The horizontal part is provided on the top wall of the limiting plug, and a transition hole is provided on the horizontal part facing the mounting through hole. The diameter of the transition hole is smaller than the diameter of the central conductor. The inclined part is provided on the inclined side wall of the limiting plug.

[0033] By adopting the above technical solution, the designed first sealing gasket facilitates the improvement of the bottom sealing performance between the outer conductor tube and the limiting plug. At the same time, the transition hole facilitates the installation of the center conductor and realizes the bottom limiting of the center conductor.

[0034] Optionally, the hollow plug is arranged in the shape of a hollow frustum, and a second sealing gasket is provided on the inner side wall of the hollow plug.

[0035] By adopting the above technical solution, the designed second sealing gasket facilitates the improvement of the top sealing performance between the outer conductor tube and the limiting plug.

[0036] Optionally, it also includes an auxiliary support frame and multiple auxiliary support cylinders. The auxiliary support frame is fixedly connected to the base, and the auxiliary support cylinders are correspondingly arranged with the horizontal pipe. The auxiliary support cylinders are installed on the auxiliary support frame, and the piston rods of the auxiliary support cylinders are fixedly connected to the horizontal pipes. The axial direction of the piston rods of the auxiliary support cylinders is parallel to the axial direction of the conveying pipe.

[0037] By adopting the above technical solution, the designed auxiliary cylinder facilitates the adjustment of the height of the horizontal tube, hollow tank and conveying pipe, thereby facilitating the installation and positioning of the outer conductor tube and the center conductor.

[0038] Secondly, this application provides a method for preparing a silicon dioxide coaxial cable, which adopts the following technical solution:

[0039] A method for preparing a silica coaxial cable, using the aforementioned silica coaxial cable preparation apparatus, includes the following steps:

[0040] S1. Material preparation: Mix 5 parts of 99.99% pure ethanol, 5 parts of THF and 90 parts of silica powder evenly;

[0041] S2. Mixed material feeding: Feed the mixed material into the hollow tank;

[0042] S3. Installation of the center conductor and outer conductor tube;

[0043] S4. Filling material between the center conductor and the outer conductor tube:

[0044] S41. Close the first valve, open the second valve, start the vacuum pump, and under the action of the vacuum pump, extract the gas in the gap between the outer conductor tube and the center conductor into the inner cavity of the feed tube, then extract it along the feed tube into the inner cavity of the horizontal tube, then extract it along the horizontal tube into the vacuum tube, and finally discharge it along the vacuum pump.

[0045] S42. After the gap between the outer conductor tube and the center conductor is evacuated, the second valve is closed and the first valve is opened. Due to the vacuum negative pressure of the gap between the outer conductor tube and the center conductor, the mixture in the hollow tank is transported to the gap between the outer conductor tube and the center conductor along the conveying pipe.

[0046] S43. As the gap between the outer conductor tube and the center conductor balances with the external air pressure, the mixing material injection action gradually slows down. Repeat steps S41 and S42 until the gap between the outer conductor tube and the center conductor is completely filled.

[0047] S5. Drawing: The filled outer conductor tube is hot-drawn;

[0048] S6. Outer sheath wrapping.

[0049] By adopting the above technical solution, 5 parts of 99.99% pure ethanol, 5 parts of THF, and 90 parts of silica powder are uniformly mixed. Ethanol eliminates the static electricity of silica, and THF acts as a dispersant to break up silica agglomerates, giving the mixture fluidity and filling properties. The mixture is then placed into a hollow can. The central conductor and outer conductor tube are then installed. The first valve is closed, the second valve is opened, and the vacuum pump is started. Under the action of the vacuum pump, the gas in the gap between the outer conductor tube and the central conductor is extracted into the inner cavity of the feed pipe, then along the feed pipe into the inner cavity of the horizontal tube, then along the horizontal tube into the vacuum tube, and finally discharged by the vacuum pump. After evacuating the gap between the outer conductor tube and the central conductor, the second valve is closed and the first valve is opened. Because the gap between the outer conductor tube and the central conductor is evacuated, the gas in the gap between the outer conductor tube and the central conductor is evacuated into the inner cavity of the feed pipe, then along the feed pipe into the inner cavity of the horizontal tube, then along the horizontal tube into the vacuum tube, and finally discharged by the vacuum pump. The vacuum negative pressure in the conductor gap allows the mixture in the hollow tank to be transported along the conveying pipe to the gap between the outer conductor tube and the center conductor. As the pressure between the outer conductor tube and the center conductor gap equalizes with the external air pressure, the filling of the mixture gradually slows down. This process is repeated until the gap between the outer conductor tube and the center conductor is completely filled. Finally, the filled outer conductor tube is hot-drawn. After drawing, the outer sheath is wrapped around the outer circumference of the outer conductor tube, thus realizing the processing of the silica coaxial cable. The designed silica coaxial cable manufacturing method achieves negative pressure filling of the mixture in the gap between the outer conductor tube and the center conductor by evacuating the gap, thereby improving the filling efficiency of the mixture between the outer conductor tube and the center conductor and thus improving the processing efficiency of the silica coaxial cable.

[0050] Optionally, S3 includes:

[0051] S31. Upper limit component height adjustment: Adjust the auxiliary support cylinder. The piston rod of the auxiliary support cylinder drives the horizontal tube to rise. The horizontal tube drives the hollow tank to rise. The hollow tank drives the conveying pipe and the upper limit component to rise synchronously. The material rises until the distance between the hollow plug and the limit plug is greater than the height of the outer conductor tube.

[0052] S32. Installation of outer conductor tube and center conductor: Insert one end of the outer conductor tube into the limit plug and insert the center conductor into the installation through hole;

[0053] S33. Limiting the outer conductor tube and the center conductor: Adjust the auxiliary support cylinder, the piston rod of the auxiliary support cylinder drives the horizontal tube to descend, the horizontal tube drives the hollow tank to descend, the hollow tank drives the conveying pipe to descend, the conveying pipe drives the hollow plug, the limiting ring and the connecting rod to move synchronously, until the hollow plug abuts against the outer conductor tube and the limiting ring is sleeved on the center conductor.

[0054] By adopting the above technical solution, firstly, the auxiliary support cylinder is adjusted, and the piston rod of the auxiliary support cylinder drives the horizontal tube to rise. The horizontal tube drives the hollow tank to rise, and the hollow tank drives the conveying pipe and the upper limit assembly to rise synchronously until the distance between the hollow plug and the limit plug is greater than the height of the outer conductor tube. Then, one end of the outer conductor tube is inserted into the limit plug, and the center conductor is inserted into the installation through hole. Next, the auxiliary support cylinder is adjusted, and the piston rod of the auxiliary support cylinder drives the horizontal tube to fall. The horizontal tube drives the hollow tank to fall, and the hollow tank drives the conveying pipe to fall. The conveying pipe drives the hollow plug, the limit ring, and the connecting rod to move synchronously until the hollow plug abuts against the outer conductor tube, and the limit ring is sleeved on the center conductor, realizing the limiting and fixing of the outer conductor tube and the center conductor. By installing the center conductor and the outer conductor tube, it is convenient to limit the center conductor and the outer conductor tube, so that the center conductor and the outer conductor tube remain in a coaxial state, ensuring the uniform distribution of the silica mixture in the center conductor and the outer conductor tube, and improving the processing quality of the silica coaxial cable.

[0055] In summary, this application includes at least one of the following beneficial technical effects:

[0056] 1. The designed silica coaxial cable preparation device uses a sealing and limiting mechanism to facilitate the limiting and fixing of the outer conductor tube and the central conductor, and uses a filling mechanism to evacuate the cavity between the outer conductor tube and the central conductor, so that a pressure difference is formed between the cavity between the outer conductor tube and the central conductor and the outside world. This allows the mixed material to automatically fill the gap between the outer conductor tube and the central conductor, improving the filling efficiency of the mixed material between the outer conductor tube and the central conductor, and thus improving the processing efficiency of the silica coaxial cable.

[0057] 2. The designed method for manufacturing silica coaxial cables involves evacuating the gap between the outer conductor tube and the central conductor to achieve negative pressure filling of the mixture between them, thereby improving the filling efficiency of the mixture and thus increasing the processing efficiency of the silica coaxial cable. Furthermore, it facilitates the positioning of the central conductor and the outer conductor tube, ensuring they remain coaxial and guaranteeing a uniform distribution of the silica mixture within them, thus improving the processing quality of the silica coaxial cable. Attached Figure Description

[0058] Figure 1 This is a schematic diagram of the overall structure of the silicon dioxide coaxial cable preparation apparatus in Embodiment 1 of this application;

[0059] Figure 2 This is a cross-sectional view of the silicon dioxide coaxial cable manufacturing apparatus of Embodiment 2 of this application;

[0060] Figure 3 yes Figure 2 Enlarged schematic diagram of part A;

[0061] Figure 4 yes Figure 2 Enlarged schematic diagram of part B.

[0062] Explanation of reference numerals in the attached drawings: 01, center conductor; 02, outer conductor tube; 1, base; 2, auxiliary support frame; 3, auxiliary support cylinder; 4, conveying pipe; 5, first valve; 6, hollow tank; 7, filling mechanism; 71, vacuum pump; 72, vacuum assembly; 721, horizontal pipe; 722, second valve; 723, vacuum tube; 7231, fixed section; 7232, flexible hose section; 8, sealing and limiting mechanism; 81, upper limit assembly; 811, hollow plug; 812, connecting rod; 813, limiting ring; 814, flow gap; 815, second sealing gasket; 82, lower limit assembly; 821, limiting plug; 822, mounting through hole; 823, first sealing gasket; 8231, horizontal part; 8232, inclined part; 824, transition hole. Detailed Implementation

[0063] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0064] In a first aspect, embodiments of this application disclose an apparatus for preparing silicon dioxide coaxial cables.

[0065] Reference Figure 1 and Figure 2 A silica coaxial cable manufacturing apparatus includes a base 1, a hollow tank 6, a feeding pipe 4, a first valve 5, an auxiliary support frame 2, a filling mechanism 7, a sealing and limiting mechanism 8, and multiple auxiliary support cylinders 3. The base 1 is fixed to the auxiliary support frame 2 by bolts, and the auxiliary support cylinders 3 are installed on the auxiliary support frame 2, with the axial direction of the piston rod of the auxiliary support cylinder 3 parallel to the axial direction of the feeding pipe 4. The hollow tank 6 is located directly above the base 1, and the feeding pipe 4 is fixedly connected to the hollow tank 6. In this application, the top wall of the hollow tank 6 is open, and the feeding pipe 4 is coaxially arranged with the hollow tank 6 and communicates with the inner cavity of the hollow tank 6. The first valve 5 is installed on the feeding pipe 4 and is used for control. The feeding pipe 4 is opened and closed; the outer conductor pipe 02 and the center conductor 01 are detachably and fixedly connected between the feeding pipe 4 and the base 1, and the outer conductor pipe 02, the center conductor 01 and the feeding pipe 4 are coaxially arranged. In this embodiment, the sealing and limiting mechanism 8 is used to limit and fix the outer conductor pipe 02 and the center conductor 01, and to make the outer conductor pipe 02 and the center conductor 01 coaxially arranged; in addition, the filling mechanism 7 includes a vacuum pump 71 and a vacuuming component 72. The vacuum pump 71 is connected to the base, the vacuuming component 72 is connected to the feeding pipe 4, and the filling mechanism 7 is used to fill the gap between the outer conductor pipe 02 and the center conductor 01 with a mixture. The auxiliary support cylinder 3 and the feeding pipe 4 are connected through the filling mechanism 7.

[0066] Reference Figure 2 , Figure 3 and Figure 4 The sealing and limiting mechanism 8 includes an upper limiting component 81 and a lower limiting component 82. The lower limiting component 82 includes a limiting plug 821 and a first sealing gasket 823. The limiting plug 821 is fixedly connected to the base 1 and is coaxially arranged with the conveying pipe 4. One end of the limiting plug 821 extends into the inner cavity of the outer conductor pipe 02, and the limiting plug 821 and the outer conductor pipe 02 are in sealing contact. The cross-sectional area of ​​the limiting plug 821 gradually decreases from high to low, and the top end of the limiting plug 821 extends into the outer conductor pipe 02. Inside the body tube 02; in this application, the limiting plug 821 is frustoconical in shape, and the minimum diameter of the limiting plug 821 is smaller than the inner diameter of the outer conductor tube 02, while the maximum diameter of the limiting plug 821 is larger than the inner diameter of the outer conductor tube 02, so as to facilitate single-end limiting of outer conductor tubes 02 with different diameters. In this embodiment, the outer conductor tube 02 is set as a copper tube; in this application, the limiting plug 821 is provided with a mounting through hole 822 for the center conductor 01 to pass through, and the mounting through hole 822 and the limiting plug 821 are connected. 21. Coaxial arrangement, the diameter of the mounting through hole 822 is slightly larger than the diameter of the center conductor 01 to facilitate single-end insertion of the center conductor 01. In this embodiment, the center conductor 01 is set as a copper core with the same height as the copper tube; the first sealing gasket 823 includes an integrally connected horizontal part 8231 and inclined part 8232. In this application, the first sealing gasket 823 is set in the shape of a hollow frustum. The horizontal part 8231 is set on the top wall of the limiting plug 821. In this embodiment, the horizontal part 8231 is bonded to... On the top wall of the limiting plug 821, and on the horizontal part 8231, there is a transition hole 824 facing the mounting through hole 822. The diameter of the transition hole 824 is smaller than the diameter of the center conductor 01, so as to realize the single-end limiting of the center conductor 01. The inclined part 8232 is provided on the inclined side wall of the limiting plug 821. In this embodiment, the inclined part 8232 is bonded to the inclined side wall of the limiting plug 821, so as to realize the sealing contact between the bottom wall of the outer conductor tube 02 and the inclined side wall of the limiting plug 821.

[0067] Reference Figure 2 and Figure 3The upper limit assembly 81 includes a hollow plug 811, a limiting ring 813, a second sealing gasket 815, and multiple connecting rods 812. The hollow plug 811 is coaxially connected to the feed pipe 4, and the end of the feed pipe 4 away from the limiting plug 811 is in sealing contact with the inner wall of the hollow plug 811. In this application, the hollow plug 811 is arranged in the shape of a hollow frustum, and the hollow plug 811 and the feed pipe 4 are smoothly transitioned. The cross-sectional area of ​​the hollow plug 811 gradually increases from high to low. The limiting ring 813 is coaxially arranged with the hollow plug 811, and the limiting ring 813 and the hollow plug 811 are fixedly connected by connecting rods 812. In this application, there can be two, three, or four connecting rods 812, as long as they can achieve the fixed connection between the limiting ring 813 and the hollow plug 811. In this embodiment, the connecting rods... Three connecting rods 812 are configured, and the three connecting rods 812 are evenly distributed along the circumferential direction of the limiting ring 813. A flow gap 814 is left between two adjacent connecting rods 812 for the passage of the mixed material. In addition, the central conductor 01 is set through the limiting ring 813 to ensure that the central conductor 01 and the outer conductor tube 02 are in a coaxial state, thereby keeping the distance between the central conductor 01 and the outer conductor tube 02 consistent and improving the uniformity of the silica mixture filling. The second sealing gasket 815 is adhered to the inner side wall of the hollow plug 811, and the second sealing gasket 815 is adhered to the bottom of the connecting rod 812 to avoid interference between the second sealing gasket 815 and the connecting rod 812 during the adhesion process. At the same time, it facilitates the sealing contact between the top wall of the outer conductor tube 02 and the inclined side wall of the limiting plug 821.

[0068] Reference Figure 2 and Figure 3The vacuum assembly 72 is provided in multiple sets. In this application, the vacuum assembly 72 can be in two, three, or four sets, as long as it enables rapid vacuuming of the cavity between the outer conductor tube 02 and the central conductor 01. In this embodiment, the vacuum assembly 72 is provided in two sets, evenly distributed along the circumferential direction of the feed pipe 4. The vacuum assembly 72 includes a vacuum tube 723, a horizontal tube 721, and a second valve 722. The horizontal tube 721 is fixedly connected to the feed pipe 4, with one end communicating with the inner cavity of the feed pipe 4 and the other end closed. In this embodiment, the horizontal tube 721 is arranged along the radial direction of the feed pipe 4, and the two horizontal tubes 721 are coaxially arranged. In this embodiment, the base 1 is a hollow cylinder, and a vent hole communicating with external air is provided on the side wall of the base 1. One end of the vacuum tube 723 is connected to the vacuum... An air pump 71 is connected at one end and a horizontal pipe 721 at the other end. The horizontal pipe 721 is connected to the inner cavity of the vacuum pipe 723. A first valve 5 is located between the horizontal pipe 721 and the hollow tank 6. A second valve 722 is installed on the horizontal pipe 721 and is located between the vacuum pipe 723 and the feed pipe 4. The vacuum pipe 723 includes a fixed section 7231 and a flexible section 7232 that are fixedly connected. The end of the fixed section 7231 away from the flexible section 7232 is connected to the vacuum pump 71. The end of the flexible section 7232 away from the fixed section 7231 is connected to the horizontal pipe 721. The second valve 722 is located between the vacuum pipe 723 and the feed pipe 4. The flexible section 7232 facilitates the adjustment of the distance between the hollow plug 811 and the limiting plug 821 in conjunction with the auxiliary support cylinder 3, thereby facilitating the limiting installation of the outer conductor pipe 02 and the center conductor 01 of different lengths.

[0069] The implementation principle of the silicon dioxide coaxial cable preparation device in this application embodiment is as follows: First, one end of the center conductor 01 is inserted into the mounting through hole 822, and the other end of the center conductor 01 is inserted into the limiting ring 813. Then, one end of the outer conductor tube 02 is installed into the limiting plug 821, so that one end of the limiting plug 821 extends into the inner cavity of the outer conductor tube 02, and the limiting plug 821 is sealed and abutted against the outer conductor tube 02, and the other end is sealed and abutted against the inner wall of the hollow plug 811, thereby fixing the position of the center conductor 01 and the outer conductor tube 02. Then, the mixture is put into the hollow tank 6, the first valve 5 is adjusted to close, the second valve 722 is opened, and the vacuum pump 71 is turned on. Under the action of the vacuum pump 71, The air in the gap between the outer conductor tube 02 and the center conductor 01 moves into the inner cavity of the horizontal tube 721, and the air in the inner cavity of the horizontal tube 721 moves into the inner cavity of the vacuum tube 723, thereby achieving vacuuming of the cavity between the outer conductor tube 02 and the center conductor 01. Then, the second valve 722 and the vacuum pump 71 are closed, and the first valve 5 is opened. Due to the vacuum negative pressure in the gap between the outer conductor tube 02 and the center conductor 01, the mixture in the hollow tank 6 is transported to the gap between the outer conductor tube 02 and the center conductor 01 along the conveying pipe 4. As the gap between the outer conductor tube 02 and the center conductor 01 becomes balanced with the external air pressure, the filling action of the mixture gradually slows down. The above steps are repeated until the gap between the outer conductor tube 02 and the center conductor 01 is completely filled, thus realizing the processing of the silicon dioxide coaxial cable.

[0070] Secondly, this application discloses a method for preparing a silicon dioxide coaxial cable.

[0071] A method for manufacturing a silica coaxial cable, using a silica coaxial cable manufacturing apparatus, includes the following steps:

[0072] S1. Material preparation: Mix 5 parts of 99.99% pure ethanol, 5 parts of THF and 90 parts of silica powder evenly. Ethanol is used to eliminate the static electricity of silica, and THF is used as a dispersant to break up silica agglomeration, so that silica powder has excellent flowability and filling properties.

[0073] S2. Mixed material feeding: The mixed material is fed into the hollow tank 6;

[0074] S3. Installation of center conductor 01 and outer conductor tube 02;

[0075] S31, Height adjustment of upper limit component 81: Adjust the auxiliary support cylinder 3. The piston rod of the auxiliary support cylinder 3 drives the horizontal tube 721 to rise. The horizontal tube 721 drives the material conveying pipe 4 to rise. The material conveying pipe 4 drives the hollow tank 6 to rise. At the same time, the material conveying pipe 4 drives the upper limit component 81 to rise synchronously until the distance between the hollow plug 811 and the limit plug 821 is greater than the height of the outer conductor tube 02.

[0076] S32. Installation of outer conductor tube 02 and center conductor 01: Insert one end of the outer conductor tube 02 into the limiting plug 821, and insert the center conductor 01 into the mounting through hole 822;

[0077] S33, Limiting the outer conductor tube 02 and the center conductor 01: Adjust the auxiliary support cylinder 3. The piston rod of the auxiliary support cylinder 3 drives the horizontal tube 721 to descend. The horizontal tube 721 drives the material conveying tube 4 to descend. The material conveying tube 4 drives the hollow plug 811, the limiting ring 813 and the connecting rod 812 to descend synchronously. The hollow plug 811 abuts against the outer conductor tube 02, and the limiting ring 813 is sleeved on the center conductor 01, realizing the limiting installation of the outer conductor tube 02 and the center conductor 01.

[0078] S4. Filling material is placed between the center conductor 01 and the outer conductor tube 02:

[0079] S41. Close the first valve 5, open the second valve 722, start the vacuum pump 71, and under the action of the vacuum pump 71, extract the gas in the gap between the outer conductor tube 02 and the center conductor 01 into the inner cavity of the feed tube 4, then extract it along the feed tube 4 into the inner cavity of the horizontal tube 721, then extract it along the horizontal tube 721 into the vacuum tube 723, and finally discharge it along the vacuum pump 71.

[0080] S42. After the gap between the outer conductor tube 02 and the center conductor 01 is evacuated, the second valve 722 is closed and the first valve 5 is opened. Due to the vacuum negative pressure of the gap between the outer conductor tube 02 and the center conductor 01, the mixture in the hollow tank 6 is transported to the gap between the outer conductor tube 02 and the center conductor 01 along the conveying pipe 4.

[0081] S43. As the gap between the outer conductor tube 02 and the center conductor 01 is balanced with the external air pressure, the mixing material injection action gradually slows down. Repeat steps S41 and S42 until the gap between the outer conductor tube 02 and the center conductor 01 is completely filled.

[0082] S5. Drawing: The filled outer conductor tube 02 is hot-drawn;

[0083] S6. Outer sheath wrapping.

[0084] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for preparing silicon dioxide coaxial cables, characterized in that: It includes a base (1), a hollow tank (6), a conveying pipe (4), a first valve (5), a filling mechanism (7), and a sealing and limiting mechanism (8); The conveying pipe (4) is fixedly connected to the hollow tank (6), and the conveying pipe (4) communicates with the inner cavity of the hollow tank (6); The first valve (5) is installed on the conveying pipe (4); The outer conductor tube (02) is detachably and fixedly connected between the conveying pipe (4) and the base (1), and the outer conductor tube (02) and the conveying pipe (4) are coaxially arranged; The sealing and limiting mechanism (8) includes an upper limit assembly (81) and a lower limit assembly (82); The lower limit assembly (82) includes a limit plug (821), which is fixedly connected to the base (1) and is coaxially arranged with the feed pipe (4). One end of the limit plug (821) extends into the inner cavity of the outer conductor tube (02) and the limit plug (821) is sealed and abutted against the outer conductor tube (02). The limiting plug (821) is provided with a mounting through hole (822) for the center conductor (01) to pass through, and the mounting through hole (822) is coaxially arranged with the limiting plug (821); The upper limit assembly (81) includes a hollow plug (811), a limiting ring (813), and multiple connecting rods (812); The hollow plug (811) is coaxially connected to the conveying pipe (4), and the end of the outer conductor pipe (02) away from the limiting plug (821) is sealed and abutted against the inner wall of the hollow plug (811); The limiting ring (813) is coaxially arranged with the hollow plug (811), and the limiting ring (813) and the hollow plug (811) are fixedly connected by the connecting rod (812). A flow gap (814) is left between two adjacent connecting rods (812) for the passage of the mixed material. The center conductor (01) is positioned through the limiting ring (813); The filling mechanism (7) includes a vacuum pump (71) and a vacuum pumping assembly (72). The vacuum pump (71) is connected to the base (1), and the vacuum pumping assembly (72) is connected to the material conveying pipe (4). The filling mechanism (7) is used to fill the gap between the outer conductor pipe (02) and the center conductor (01) with a mixture. The vacuum assembly (72) includes a vacuum tube (723), a horizontal tube (721), and a second valve (722); The horizontal tube (721) is fixedly connected to the conveying pipe (4), and one end of the horizontal tube (721) is connected to the inner cavity of the conveying pipe (4), while the other end is closed. One end of the vacuum tube (723) is connected to the vacuum pump (71), and the other end is connected to the horizontal tube (721). The horizontal tube (721) communicates with the inner cavity of the vacuum tube (723). The first valve (5) is located between the horizontal tube (721) and the hollow tank (6). The second valve (722) is installed on the horizontal pipe (721), and the second valve (722) is located between the vacuum pipe (723) and the feed pipe (4).

2. The apparatus for preparing silica coaxial cables according to claim 1, characterized in that: The vacuum pumping assembly (72) is provided in multiple sets, and the multiple sets of the vacuum pumping assembly (72) are evenly distributed along the circumferential direction of the feed pipe (4).

3. The apparatus for preparing silica coaxial cables according to claim 1, characterized in that: The vacuum tube (723) includes a fixed section (7231) and a flexible section (7232) that are fixedly connected. The fixed section (7231) is connected to the vacuum pump (71) at one end away from the flexible section (7232), and the flexible section (7232) is connected to the horizontal tube (721) at one end away from the fixed section (7231).

4. The apparatus for preparing silica coaxial cables according to claim 1, characterized in that: The limiting plug (821) has a gradually increasing cross-sectional area from high to low, and the top of the limiting plug (821) extends into the inner cavity of the outer conductor tube (02); the minimum diameter of the limiting plug (821) is smaller than the inner diameter of the outer conductor tube (02), and the maximum diameter of the limiting plug (821) is larger than the inner diameter of the outer conductor tube (02).

5. The apparatus for preparing silica coaxial cables according to claim 4, characterized in that: The limiting plug (821) has a first sealing gasket (823) on its side wall. The first sealing gasket (823) includes a horizontal part (8231) and an inclined part (8232) integrally connected. The horizontal part (8231) is disposed on the top wall of the limiting plug (821), and a transition hole (824) is opened on the horizontal part (8231) facing the mounting through hole (822). The diameter of the transition hole (824) is smaller than the diameter of the center conductor (01). The inclined part (8232) is disposed on the inclined side wall of the limiting plug (821).

6. The apparatus for preparing silica coaxial cables according to claim 1, characterized in that: The hollow plug (811) is arranged in the shape of a hollow frustum, and a second sealing gasket (815) is provided on the inner side wall of the hollow plug (811).

7. The apparatus for preparing silica coaxial cables according to claim 2, characterized in that: It also includes an auxiliary support frame (2) and multiple auxiliary support cylinders (3). The auxiliary support frame (2) is fixedly connected to the base (1). The auxiliary support cylinders (3) are correspondingly arranged with the horizontal tube (721). The auxiliary support cylinders (3) are installed on the auxiliary support frame (2), and the piston rod of the auxiliary support cylinder (3) is fixedly connected to the horizontal tube (721). The axial direction of the piston rod of the auxiliary support cylinder (3) is parallel to the axial direction of the material conveying pipe (4).

8. A method for preparing a silica coaxial cable, using the silica coaxial cable preparation apparatus described in claim 7, characterized in that: Includes the following steps: S1. Material preparation: Mix 5 parts of 99.99% pure ethanol, 5 parts of THF and 90 parts of silica powder evenly; S2. Mixed material feeding: The mixed material is fed into the hollow tank (6); S3. Installation of the center conductor (01) and the outer conductor tube (02); S4. Filling material between the center conductor (01) and the outer conductor tube (02): S41. Close the first valve (5), open the second valve (722), start the vacuum pump (71), and under the action of the vacuum pump (71), the gas in the gap between the outer conductor tube (02) and the center conductor (01) is extracted to the inner cavity of the conveying pipe (4), then extracted along the conveying pipe (4) to the inner cavity of the horizontal pipe (721), then extracted along the horizontal pipe (721) to the vacuum tube (723), and finally discharged along the vacuum pump (71); S42. After the gap between the outer conductor tube (02) and the center conductor (01) is evacuated, the second valve (722) is closed and the first valve (5) is opened. Due to the vacuum negative pressure of the gap between the outer conductor tube (02) and the center conductor (01), the mixture in the hollow tank (6) is transported to the gap between the outer conductor tube (02) and the center conductor (01) along the conveying pipe (4). S43. As the gap between the outer conductor tube (02) and the center conductor (01) balances with the external air pressure, the mixing material injection action gradually slows down. Repeat steps S41 and S42 until the gap between the outer conductor tube (02) and the center conductor (01) is completely filled. S5. Drawing: The filled outer conductor tube (02) is hot-drawn; S6. Outer sheath wrapping.

9. The method for preparing a silicon dioxide coaxial cable according to claim 8, characterized in that: S3 includes: S31, Height adjustment of upper limit component (81): Adjust the auxiliary support cylinder (3), the piston rod of the auxiliary support cylinder (3) drives the horizontal tube (721) to rise, the horizontal tube (721) drives the conveying pipe (4) to rise, the conveying pipe (4) drives the hollow tank (6) and the upper limit component (81) to rise synchronously, until the distance between the hollow plug (811) and the limit plug (821) is greater than the height of the outer conductor tube (02); S32. Installation of outer conductor tube (02) and center conductor (01): Insert one end of the outer conductor tube (02) into the limiting plug (821) and insert the center conductor (01) into the mounting through hole (822); S33. Limiting the outer conductor tube (02) and the center conductor (01): Adjust the auxiliary support cylinder (3), the piston rod of the auxiliary support cylinder (3) drives the horizontal tube (721) to descend, the horizontal tube (721) drives the conveying pipe (4) to descend, the conveying pipe (4) drives the hollow tank (6) to descend, the conveying pipe (4) drives the hollow plug (811), the limiting ring (813) and the connecting rod (812) to move synchronously until the hollow plug (811) abuts against the outer conductor tube (02) and the limiting ring (813) is sleeved on the center conductor (01).

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