Optical cable material heating equipment and rat-proof optical cable preparation method thereof

Abstract

The invention discloses optical cable material heating equipment and a rat-proof optical cable preparation method thereof.The optical cable material heating equipment comprises a mounting base, an extrusion mechanism and a first conveying hopper, the extrusion mechanism comprises an extrusion box, an extrusion screw and an extrusion base, the extrusion mechanism comprises a two-section melting structure and a side fixing base arranged in the side direction of the mounting base, and a side extrusion box is arranged on the side fixing base; the side extrusion box is movably connected with the side fixing seat through a rotating piece, a side extrusion piece is connected to the side extrusion box, and the side extrusion piece is connected with a lower adapter; the inner mold structure comprises an inner mold, an outer sheath runner on the inner mold and a lateral runner communicated with the lower adapter, and the flow path of the lateral runner is longer than that of the outer sheath runner; and the seamless embedded structure comprises an inner fixed guide cylinder installed in the extrusion base, the peripheral face of the inner fixed guide cylinder is fixed through at least two embedded cylinders, inner heating devices attached to the inner fixed guide cylinder are arranged in the embedded cylinders, and double-layer forming can be completed by applying a conventional production line.

Description

Technical Field

[0001] The present invention relates to an optical cable preparation device, in particular to an optical cable material heating device and a method for preparing a rat-proof optical cable. Background Art

[0002] An optical cable is suitable for use as a transmission line in a broadband access network system. It is a new type of aerial direct burial cable that integrates optical fibers, rat-proofing, and ant-proofing. It can solve broadband access problems. The laying channels of optical cables are often places where rodents such as squirrels or mice like to move. Due to the habit of rodents to grind their teeth, as the laying volume of optical cables increases and the scenarios become more diverse, the situation of optical fiber interruption in optical cables caused by rodent gnawing is becoming more and more common.

[0003] For traditional optical cables to prevent rats, a layer of FRP glass column stranded cage sheath or armored protection is added outside the inner cable of the optical cable. However, this method has a high cost, and it will cause the overall outer diameter of the optical cable to become larger, and at the same time make the weight of the optical cable heavier, which is inconvenient for production and use. Therefore, the existing method of forming a nylon sleeve outside the optical cable is adopted, so as to protect the optical cable without increasing its weight. However, when using this method, it is generally after the outer sheath of the cable is extruded, and then it is processed separately through a nylon sleeve extrusion device, and both processes require water cooling, which lengthens the entire production line, not only increases the equipment cost, but also prolongs the overall processing time of the optical cable, increasing the production cost of the optical cable and reducing the profit.

[0004] Therefore, this case aims to provide an optical cable material heating device and a method for preparing a rat-proof optical cable, which can not only directly realize the double-layer forming of optical cable materials in one device, complete the double-layer forming by using a conventional production line, but also the internal liquid material is not easily blocked when changing the mold after the thermoforming is completed, thus making the production of the production line more smooth and efficient. Summary of the Invention

[0005] The present invention provides an optical cable material heating device and a method for preparing a rat-proof optical cable, which can effectively solve the above problems.

[0006] The present invention is implemented as follows: An optical cable material heating device, comprising: a mounting base, an extrusion mechanism is arranged on the mounting base, a first feeding hopper is connected to the top of the extrusion mechanism, the extrusion mechanism includes an extrusion box arranged on the mounting base, an extrusion screw is arranged in the extrusion box, the end of the extrusion screw is connected to an extrusion seat, and when the optical cable passes through the extrusion seat, an outer sheath is coated on its outer surface. It further includes: The two-stage melting structure includes a side fixing seat arranged on the side of the mounting seat, a side extrusion box is provided on the side fixing seat, the side extrusion box is movably connected to the side fixing seat through a rotating member, a side extrusion piece is connected to the side extrusion box, and the side extrusion piece is connected to a lower adapter. The side extrusion box is rotated to the top of the extrusion seat via the rotating member, so that the side extrusion piece adds the molten material liquid into the extrusion seat through the lower adapter; The inner mold structure includes an inner mold disposed in the extrusion seat, wherein the inner mold is provided with an outer sheath flow channel communicating with the extrusion screw and a lateral flow channel communicating with the lower adapter, wherein the flow path of the lateral flow channel is longer than the flow path of the outer sheath flow channel; The seamless embedded structure includes an internal fixed guide tube installed in the extrusion seat, one end of the internal fixed guide tube is connected to the optical cable inlet of the extrusion seat, and the other end of the internal fixed guide tube is connected to the inner mold. The outer circumference of the internal fixed guide tube is fixed by at least two embedded tubes. The interior of the embedded tube is provided with an internal heating device attached to the internal fixed guide tube, and the internal heating device is connected to an external power supply.

[0007] As a further improvement, the rotating member includes an inner fixing seat embedded in the side fixing seat, a rotating motor is provided in the inner fixing seat, and the top of the rotating motor is connected to the side extrusion box.

[0008] As a further improvement, the lower adapter includes a booster cylinder connected to the side extrusion box, the lower end of the booster cylinder is connected to an output cylinder, and the lower end of the output cylinder is connected to a docking tube connected to the top column tube of the extrusion seat.

[0009] As a further improvement, the outer sheath flow channel is an arc-shaped outer chute, the liquid inlet end of the outer chute is communicated with the extrusion screw, and the liquid outlet end of the outer chute is communicated with the inner cavity of the inner mold.

[0010] As a further improvement, the lateral flow channel includes a first transverse channel connected to the lower adapter, the first transverse channel is connected to a transverse cutting channel, the transverse cutting channel is connected to a second transverse channel, and the second transverse channel is connected to the inner cavity of the inner mold.

[0011] As a further improvement, the internal fixed guide cylinder includes a threaded ring connected to the inner cavity of the inner mold, the threaded ring is connected to a reducing tube, the reducing tube is connected to a micro-diameter tube, and the micro-diameter tube is inserted into the feed port of the inner mold.

[0012] As a further improvement, a plurality of connecting studs are further provided on the outside of the internal fixed guide cylinder, a clearance cavity is opened on the outside of the extrusion seat, the embedded cylinder includes an embedded block embedded in the clearance cavity, and an alignment rod cooperating with the connecting studs is provided on the side of the embedded block close to the extrusion seat, and the sum of the outer diameter of the embedded block and the outer diameter of the internal fixed guide cylinder is equal to the inner diameter of the extrusion seat.

[0013] As a further improvement, the inner heating device includes an inner mounting rod penetrating through the embedded block. The inner diameter of the inner mounting rod gradually decreases from outside to inside. One end of the inner mounting rod is connected with a heating terminal, and the heating terminal is connected with the power connection terminal through the inner mounting rod.

[0014] The present invention also provides a preparation method for a mouse-proof optical cable, which uses the above-mentioned optical cable material heating device, and includes the following steps: S1: Rotate the side extrusion box above the extrusion seat through the rotating member to make the lower adapter connect with the extrusion seat, and feed materials into the feeding ends of the first feeding hopper and the side extrusion box at the same time; S2: Tighten the optical cable through the tensioning structure and then input it into the extrusion seat. The optical cable first passes through the outer sheath flow path of the inner die to form an outer sheath on the outer side of the optical cable, and then forms a nylon sleeve through the position of the lateral flow path; S3: After the optical cable completely passes through, heat the inner fixed guide cylinder through the inner heating device to make the glue material to be cooled in the inner fixed guide cylinder flow out; S4: Unscrew the embedded cylinder from the position of the inner fixed guide cylinder to make the inner fixed guide cylinder communicate with the outside. Check whether the glue material inside the inner fixed guide cylinder is completely removed, and then lock and fix the embedded cylinder and the inner fixed guide cylinder.

[0015] The beneficial effects of the present invention are as follows: In the prior art, when processing an optical cable, in order to improve the strength of the optical cable, usually other extrusion devices are set up to extrude another protective structure on the basis of the optical cable already having an outer sheath. Although this method can improve the overall strength of the optical cable, it will extend the entire production line and require more auxiliary equipment. Therefore, the present invention sets up a two-stage melting structure, adding a section of basic equipment on the basis of the original melting sheath equipment. After the first extrusion molding, secondary extrusion can be carried out, so that two-stage processing can be realized on a single working station, and the optical cable after two-stage processing directly enters the cooling pool for cooling, which not only shortens the equipment of the production line for the sheath, but also reduces the equipment components for secondary cooling.

[0016] The two-stage melting structure can be selected to be switched on or off according to the working conditions. When it is not necessary to switch, the side fixed seat can be transferred to other positions through the rotating motor in the rotating member, so as to avoid affecting the normal use of the extrusion mechanism.

[0017] During the use of the two-stage melting structure, in order to ensure that the two-stage melting structure can cooperate well with the inner die structure, the two-stage melting structure needs to be connected to the extrusion seat. Therefore, the present invention sets a lower adapter at the discharging position of the two-stage melting structure, connects the two-stage melting structure with the extrusion seat through the connecting pipe of the lower adapter, and then completes the two-stage precise feeding after pressurization by the pressurizing cylinder of the spiral structure.

[0018] After adopting the two-stage melting structure, although the effect of secondary extrusion molding can be achieved, if only the feeding speed is controlled, it is easy to cause the two-layer protection structures to blend together, and instead, the effect of multi-layer protection cannot be achieved. Therefore, on the basis of the two-stage melting structure, the present invention provides an inner mold structure. Through the arrangement of the outer sheath flow channel and the lateral flow channel in the inner mold structure, the extrusion mechanism and the two-stage melting structure can respectively correspond to the outer sheath flow channel and the lateral flow channel, so as to carry out feeding on two flow paths, and further make the stratification of the two-layer protection structure more obvious, and at the same time, it does not affect the strength of the two protection structures.

[0019] In order to make the discharging speeds of the outer sheath flow channel and the lateral flow channel different, therefore, the flow channel structures of the outer sheath flow channel and the lateral flow channel of the present invention are different. Since the flow channel of the outer sheath flow channel needs to discharge materials quickly to form the outer sheath structure, the flow channel of the outer sheath flow channel is just a simple arc-shaped structure, while the lateral flow channel needs to be more circuitous. Therefore, the position of the lateral flow channel is set behind the outer sheath flow channel compared with the outer sheath flow channel, and multiple chute and cut-off channel conversions cannot be adopted, so as to discharge materials one step slower than the outer sheath flow channel, and thus realize the formation of the two-stage protection structure.

[0020] The arrangement of the inner mold structure realizes two flow paths, but at the same time, it also makes the mold complex, and further increases the possibility of glue accumulation inside the mold. The hardened rubber material will form solids and block the inside of the extrusion equipment. Therefore, through the seamless embedded structure provided by the present invention, first, after stopping the discharging, the inner part of the inner mold structure can be heated by the inner heating device, so that the slightly solidified glue liquid flows out of the extrusion seat, and the glue liquid can also be cleaned by disassembling the embedded cylinder, ensuring that the glue liquid inside does not stay in the equipment, and reducing the cleaning difficulty of the operators.

[0021] In order to ensure the connection effect between the inner fixed guide cylinder, the extrusion seat and the inner mold, the inner fixed guide cylinder of the present invention is arranged between the extrusion seat and the inner mold. When it is necessary to clean the inside of the extrusion seat, the inner mold can be first unscrewed from the position of the threaded ring, and then the inner fixed guide cylinder inside the inner fixed guide cylinder can be processed separately, so that the inside of the extrusion seat can be cleaned after each day's operation, so as to ensure the uniformity during the optical cable encapsulation.

[0022] During the cleaning process of the inside of the inner fixed guide cylinder, only from the discharging end or the feeding end, a metal rod needs to be inserted into the inside to twist out the semi-solidified glue liquid. This not only has a low processing efficiency, but also is difficult to clean thoroughly. Therefore, by arranging an embedded cylinder on the inner fixed guide cylinder of the present invention, not only can the inside of the inner fixed guide cylinder be heated by the inner heating device, so that the glue liquid melts and flows out, but also the embedded cylinder can be removed, and the inside of the inner fixed guide cylinder can be directly cleaned from the side, ensuring that the glue liquid does not stay overnight inside the equipment, and enabling the encapsulation work of the new day to proceed normally, and the optical cable can be more uniform during encapsulation. Brief Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0024] Figure 1 is a schematic three-dimensional structure diagram of the present invention.

[0025] Figure 2 is a schematic top view structure diagram of the present invention.

[0026] Figure 3 is the present invention Figure 2 the sectional view taken along A-A in it.

[0027] Figure 4 is the present invention Figure 2 the sectional view taken along B-B in it.

[0028] Figure 5 is a schematic structure diagram of the internal fixed guide cylinder of the present invention.

[0029] Figure 6 is a schematic side view structure diagram of the embedded cylinder and the internal heating device of the present invention.

[0030] In the figure: mounting base 10, extrusion mechanism 20, extrusion box 21, extrusion seat 22, two-stage melting structure 40, side fixed seat 41, side extrusion box 42, rotating member 43, internal fixed seat 431, rotating motor 432, side extrusion member 44, lower adapter 45, boosting cylinder 451, output cylinder 452, docking pipe 453, internal mold structure 50, internal mold 51, outer sheath flow channel 52, lateral flow channel 53, first transverse flow channel 531, transverse cutting channel 532, second transverse flow channel �33, seamless embedded structure 60, internal fixed guide cylinder 61, threaded ring 611, reduced diameter pipe 612, micro-diameter pipe 613, connecting stud 614, embedded cylinder 62, embedded block 621, alignment rod 622, internal heating device 63, internal mounting rod 631, heating terminal 632, power connection terminal 633. Detailed Embodiments

[0031] To make the embodiments of the present invention, all fall within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0032] In the description of the present invention, the terms "first" and "second" are used only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0033] Refer to Figures 1 to 6As shown in the figure, an optical cable material heating device includes: a mounting base 10, an extrusion mechanism 20 is provided on the mounting base 10, a first feeding hopper 30 is connected to the top of the extrusion mechanism 20, the extrusion mechanism 20 includes an extrusion box 21 provided on the mounting base 10, an extrusion screw is provided in the extrusion box 21, the end of the extrusion screw is connected to an extrusion seat 22, and when the optical cable passes through the extrusion seat 22, an outer sheath is coated on its outer surface. It further includes: a two-stage melting structure 40, which includes a side fixing seat 41 provided on the side of the mounting base 10, a side extrusion box 42 is provided on the side fixing seat 41, the side extrusion box 42 is movably connected to the side fixing seat 41 through a rotating member 43, a side extrusion member 44 is connected to the side extrusion box 42, the side extrusion member 44 is connected to a lower adapter 45, the side extrusion box 42 is rotated to the upper side of the extrusion seat 22 through the rotating member 43, so that the side extrusion member 44 adds molten material into the extrusion seat 22 through the lower adapter 45; an inner die structure 50, which includes an inner die 51 provided in the extrusion seat 22, an outer sheath flow channel 52 communicating with the extrusion screw and a lateral flow channel 53 communicating with the lower adapter 45 are provided on the inner die 51, and the flow diameter of the lateral flow channel 53 is longer than that of the outer sheath flow channel 52; a seamless inlay structure 60, which includes an inner fixed guide cylinder 61 installed in the extrusion seat 22, one end of the inner fixed guide cylinder 61 communicates with the optical cable inlet of the extrusion seat 22, the other end of the inner fixed guide cylinder 61 is connected to the inner die 51, the outer peripheral surface of the inner fixed guide cylinder 61 is fixed by at least two inlay cylinders 62, and an inner heating device 63 attached to the inner fixed guide cylinder 61 is provided inside the inlay cylinder 62, and the inner heating device 63 is connected to an external power supply.

[0034] When it is necessary to disassemble the seamless inlay structure 60, first, the shell outside the extrusion seat 22 needs to be removed, so as to expose the position of the seamless inlay structure 60, and then it is better to process the remaining glue, and at the same time, it also improves the safety in the normal state.

[0035] In the prior art, when processing optical cables, in order to improve the strength of the optical cables, usually other extrusion devices are set to extrude another protective structure on the basis of the optical cables already equipped with outer sheaths. Although this method can improve the overall strength of the optical cables, it will lengthen the entire production line and require more auxiliary equipment. Therefore, in this embodiment, through the two-stage melting structure 40 provided, a section of basic equipment is added on the basis of the original melting sheath equipment, and secondary extrusion can be carried out after one-time extrusion molding, so that two-stage processing can be realized on a single station, and the optical cables after two-stage processing directly enter the cooling pool for cooling, which not only shortens the equipment of the production line for the sheath, but also reduces the equipment components for secondary cooling.

[0036] The two-stage melting structure 40 can be switched for use according to the working conditions. Specifically, the rotating member 43 includes an inner fixing seat 431 embedded in the side fixing seat 41. A rotating motor 432 is arranged inside the inner fixing seat 431. The top of the rotating motor 432 is connected to the side extrusion box 42. When it is not necessary to switch for use, the side fixing seat 41 can be transferred to other positions by the rotating motor 432 in the rotating member 43, so as to avoid affecting the normal use of the extrusion mechanism 20.

[0037] During the use of the two-stage melting structure 40, in order to ensure that the two-stage melting structure 40 can cooperate well with the inner mold structure 50, the two-stage melting structure 40 needs to be docked with the extrusion seat 22. Therefore, the lower adapter 45 of this embodiment includes a pressure increasing cylinder 451 connected to the side extrusion box 42. A output cylinder 452 is connected to the lower end of the pressure increasing cylinder 451. A docking pipe 453 connected to the top column pipe of the extrusion seat 22 is connected to the lower end of the output cylinder 452. By arranging the lower adapter 45 at the discharging position of the two-stage melting structure 40, docking with the extrusion seat 22 through the docking pipe 453 of the lower adapter 45, and then pressurizing through the spiral pressure increasing cylinder 451, the two-stage precise blanking can be completed.

[0038] After adopting the two-stage melting structure 40, although the effect of secondary extrusion molding can be achieved, if only the blanking speed is controlled, it is easy to cause the two-layer protection structures to blend together, and instead the effect of multi-layer protection cannot be achieved. Therefore, the present invention provides an inner mold structure 50 on the basis of the two-stage melting structure 40. Through the settings of the outer sheath flow channel 52 and the lateral flow channel 53 in the inner mold structure 50, the extrusion mechanism 20 and the two-stage melting structure 40 can respectively correspond to the outer sheath flow channel 52 and the lateral flow channel 53, so as to perform blanking on two flow paths, thereby making the stratification of the two-layer protection structures more obvious, and at the same time not affecting the strength of the two protection structures.

[0039] In order to make the discharging speeds of the outer sheath flow channel 52 and the lateral flow channel 53 different, therefore, the outer sheath flow channel 52 in this embodiment is an arc-shaped outer chute. The liquid inlet end of the outer chute communicates with the extrusion screw, and the liquid outlet end of the outer chute communicates with the inner cavity of the inner mold 51. The lateral flow channel 53 includes a first horizontal chute 531 connected to the lower adapter 45. The first horizontal chute 531 is connected to a cross-cut channel 532, and the cross-cut channel 532 communicates with a second horizontal chute 533. The second horizontal chute 533 is connected to the inner cavity of the inner mold 51. The flow channel structures of the outer sheath flow channel 52 and the lateral flow channel 53 are different. Since the flow channel of the outer sheath flow channel 52 needs to discharge materials quickly to form the outer sheath structure, the outer sheath flow channel 52 is just a simple arc-shaped structure. While the lateral flow channel 53 needs to be a bit more circuitous. Therefore, not only is the position of the lateral flow channel 53 behind that of the outer sheath flow channel 52, but it cannot adopt the conversion of multiple chutes and cut channels, so as to slow down the discharging of the outer sheath flow channel 52 by one step, and further realize the formation of the two-stage protection structure.

[0040] The setting of the inner mold structure 50 is adopted to realize the two-stage flow path, but at the same time, it also leads to the complexity of the mold, and further increases the possibility of glue storage inside the mold. And the hardened rubber material will form solids and block the inside of the extrusion equipment. Therefore, in the present invention, through the seamless embedded structure 60 provided, firstly, after the discharging stops, the inner part of the inner mold structure 50 can be heated by the inner heating device 63, so that the slightly solidified glue liquid flows out of the extrusion seat 22. And the glue liquid can also be cleaned by disassembling the embedded cylinder 62, ensuring that the glue liquid inside does not stay in the equipment, and reducing the cleaning difficulty of the operators.

[0041] In order to ensure the connection effect between the inner fixed guide cylinder 61, the extrusion seat 22 and the inner mold 51, the inner fixed guide cylinder 61 in this embodiment includes a threaded ring 611 connected to the inner cavity of the inner mold 51. The threaded ring 611 is connected to a reduced-diameter pipe 612, and the reduced-diameter pipe 612 is connected to a micro-diameter pipe 613. The micro-diameter pipe 613 is inserted into the feed port of the inner mold 51. The inner fixed guide cylinder 61 is arranged between the extrusion seat 22 and the inner mold 51. When it is necessary to clean the inside of the extrusion seat 22, the inner mold 51 can be first unscrewed from the position of the threaded ring 611, and then the inner part of the inner fixed guide cylinder 61 inside the inner fixed guide cylinder 61 can be treated separately, so that the inside of the extrusion seat 22 can be cleaned after each day's operation, thus ensuring the uniformity during the optical cable encapsulation.

[0042] During the cleaning process inside the internal fixed guide cylinder 61, it is necessary to use a metal rod to extend into the interior to rotate and hinge out the semi-solidified glue only from the position of its discharge end or feed end. Not only is the processing efficiency low, but it is also difficult to clean it. Therefore, in this embodiment, the outer side of the internal fixed guide cylinder 61 is further provided with a plurality of connecting studs 614, the outer side of the extrusion seat 22 is provided with a clearance cavity, and the embedded cylinder 62 includes an embedded block 621 embedded in the clearance cavity, and the embedded block 621 is provided with a side close to the extrusion seat 22 that matches the connecting stud 614. The sum of the outer diameter of the embedded block 621 and the outer diameter of the inner fixed guide tube 61 is equal to the inner diameter of the extrusion seat 22. By arranging the embedded tube 62 on the inner fixed guide tube 61, not only can the interior of the inner fixed guide tube 61 be heated by the internal heating device 63, thereby allowing the glue to melt and flow out, but the embedded tube 62 can also be removed at the same time, and the interior of the inner fixed guide tube 61 can be cleaned directly from the side to ensure that the glue does not remain inside the equipment overnight, so that the new day's glue coating work can proceed normally and the optical cable can be more uniform when glue coating.

[0043] In this embodiment, the internal heating device 63 includes an internal mounting rod 631 that passes through the embedded block 621. The inner diameter of the internal mounting rod 631 gradually decreases from the outside to the inside. The end of the internal mounting rod 631 is connected to a heating terminal 632. The heating terminal 632 is connected to the power terminal 633 through the internal mounting rod 631, so that the heating terminal 632 is directly set on the inner side of the embedded block 621, and then the glue is melted first so that it can be removed smoothly.

[0044] Another embodiment of the present invention further provides a method for preparing a rodent-proof optical cable, using the above-mentioned optical cable material heating device, comprising the following steps: S1: Rotate the side extrusion box 42 to the top of the extrusion seat 22 through the rotating member 43 so that the lower adapter 45 is docked with the extrusion seat 22, and simultaneously feed the first feed hopper 30 and the feed end of the side extrusion box 42; S2: After being tensioned by the tensioning structure, the optical cable is fed into the extrusion seat 22. The optical cable first passes through the outer sheath flow channel 52 of the inner mold 51 to form an outer sheath on the outside of the optical cable, and then passes through the lateral flow channel 53 to form a nylon sleeve. S3: After all the optical cables have passed through, the internal heating device 63 heats the internal fixing guide tube 61 to allow the glue to be cooled in the internal fixing guide tube 61 to flow out; S4: Unscrew the inner tube 62 from the inner fixing guide tube 61 to connect the inner fixing guide tube 61 to the outside, check whether the glue inside the inner fixing guide tube 61 is completely removed, and then lock the inner tube 62 and the inner fixing guide tube 61 together.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An optical cable material heating device, comprising: Mounting base (10), an extrusion mechanism (20) is provided on the mounting base (10), a first feed hopper (30) is connected to the top of the extrusion mechanism (20), the extrusion mechanism (20) includes an extrusion box (21) provided on the mounting base (10), an extrusion screw is provided in the extrusion box (21), the end of the extrusion screw is connected to an extrusion base (22), and when the optical cable passes through the extrusion base (22), an outer sheath is coated on its outer surface, characterized in that it further includes: Two-stage melting structure (40), including a side fixing base (41) provided on the side of the mounting base (10), a side extrusion box (42) is provided on the side fixing base (41), the side extrusion box (42) is movably connected to the side fixing base (41) through a rotating member (43), a side extrusion member (44) is connected to the side extrusion box (42), the side extrusion member (44) is connected to a lower adapter (45), the side extrusion box (42) is rotated to the upper side of the extrusion base (22) through the rotating member (43), so that the side extrusion member (44) adds molten material into the extrusion base (22) through the lower adapter (45); Inner die structure (50), including an inner die (51) provided in the extrusion base (22), an outer sheath flow channel (52) communicating with the extrusion screw and a lateral flow channel (53) communicating with the lower adapter (45) are provided on the inner die (51), and the flow diameter of the lateral flow channel (53) is longer than that of the outer sheath flow channel (52); Seamless embedding structure (60), including an inner fixed guide cylinder (61) installed in the extrusion base (22), one end of the inner fixed guide cylinder (61) communicates with the optical cable inlet of the extrusion base (22), the other end of the inner fixed guide cylinder (61) is connected to the inner die (51), the outer peripheral surface of the inner fixed guide cylinder (61) is fixed by at least two embedding cylinders (62), an inner heating device (63) fitting on the inner fixed guide cylinder (61) is provided inside the embedding cylinder (62), and the inner heating device (63) is connected to an external power supply.

2. The optical cable material heating device according to claim 1, characterized in that, The rotating member (43) includes an inner fixed base (431) embedded in the side fixing base (41), a rotating motor (432) is provided in the inner fixed base (431), and the top of the rotating motor (432) is connected to the side extrusion box (42).

3. The optical cable material heating device according to claim 1, characterized in that, The lower adapter (45) includes a pressurizing cylinder (451) connected to the side extrusion box (42), a lower end of the pressurizing cylinder (451) is connected to an output cylinder (452), and a lower end of the output cylinder (452) is connected to a docking pipe (453) connected to the top column pipe of the extrusion base (22).

4. An optical cable material heating device according to claim 1, characterized in that, The outer sheath flow channel (52) is an arc-shaped outer chute, the liquid inlet end of the outer chute communicates with the extrusion screw, and the liquid outlet end of the outer chute communicates with the inner cavity of the inner die (51).

5. A heating device for optical cable materials according to claim 4, characterized in that, The lateral flow channel (53) includes a first transverse channel (531) connected to the lower adapter (45), the first transverse channel (531) is connected to a transverse channel (532), the transverse channel (532) is connected to a second transverse channel (533), and the second transverse channel (533) is connected to the inner cavity of the inner mold (51).

6. The optical cable material heating device according to claim 1, characterized in that, The inner fixed guide cylinder (61) includes a threaded ring (611) connected to the inner cavity of the inner mold (51), the threaded ring (611) is connected to a reducing tube (612), the reducing tube (612) is connected to a micro-diameter tube (613), and the micro-diameter tube (613) is inserted into the feed port of the inner mold (51).

7. An optical cable material heating device according to claim 6, characterized in that, The outer side of the internal fixed guide cylinder (61) is further provided with a plurality of connecting studs (614), the outer side of the extrusion seat (22) is provided with a clearance cavity, the embedded cylinder (62) includes an embedded block (621) embedded in the clearance cavity, and a positioning rod (622) that cooperates with the connecting studs (614) is provided on the side of the embedded block (621) close to the extrusion seat (22), and the sum of the outer diameter of the embedded block (621) and the outer diameter of the internal fixed guide cylinder (61) is equal to the inner diameter of the extrusion seat (22).

8. An optical cable material heating device according to claim 7, characterized in that, The internal heating device (63) includes an internal mounting rod (631) that passes through the embedded block (621), the inner diameter of the internal mounting rod (631) gradually decreases from the outside to the inside, and a heating terminal (632) is connected to the end of the internal mounting rod (631), and the heating terminal (632) is connected to the power terminal (633) through the internal mounting rod (631).

9. A method for preparing a rat-proof optical cable, which uses an optical cable material heating device according to any one of claims 1 to 8, is characterized in that, The steps include: S1: The side extrusion box (42) is rotated to the top of the extrusion seat (22) by the rotating member (43) so that the lower adapter (45) is docked with the extrusion seat (22), and the first feed hopper (30) and the feed end of the side extrusion box (42) are fed at the same time; S2: After the optical cable is tensioned by the tensioning structure, it is input into the extrusion seat (22). The optical cable first passes through the outer sheath flow channel (52) of the inner mold (51) to form an outer sheath on the outside of the optical cable, and then passes through the lateral flow channel (53) to form a nylon sleeve; S3: After all the optical cables have passed through, the internal heating device (63) is used to heat the internal fixed guide tube (61), so that the glue material to be cooled in the internal fixed guide tube (61) flows out; S4: Unscrew the inner tube (62) from the position of the inner fixed guide tube (61) so that the inner fixed guide tube (61) is connected to the outside, check whether the glue inside the inner fixed guide tube (61) is completely removed, and then lock the inner tube (62) and the inner fixed guide tube (61) together.

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