Optical cable material heating device and method for preparing rat-proof optical cable

Abstract

The present invention discloses an optical cable material heating device and a method for preparing a rat-proof optical cable thereof, comprising: a mounting seat, an extrusion mechanism, and a first hopper, the extrusion mechanism comprising an extrusion box, an extrusion screw, and an extrusion seat, comprising: a two-stage melting structure, comprising a side fixing seat arranged on the side of the mounting seat, a side extrusion box being arranged on the side fixing seat, the side extrusion box being movably connected to the side fixing seat through a rotating member, a side extrusion piece being connected to the side extrusion box, and the side extrusion piece being connected to a lower adapter; an inner mold structure, comprising an inner mold, an outer sheath flow channel on the inner mold and a lateral flow channel communicating with the lower adapter, the flow path of the lateral flow channel being longer than the flow path of the outer sheath flow channel; a seamless embedded structure, comprising an inner fixed guide cylinder installed in the extrusion seat, the outer circumference of the inner fixed guide cylinder being fixed by at least two embedded cylinders, the interior of the inner embedded cylinder being provided with an inner heating device fitted on the inner fixed guide cylinder, and the present invention can complete double-layer molding by applying a conventional production line.

Description

Technical Field

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

[0002] Optical cable is suitable for use as a transmission line in broadband access network systems. It is a new type of overhead direct burial. It integrates optical fiber, rodent prevention, and ant prevention in one, and can solve the problem of broadband access. The laying channels of optical cables are often places where squirrels, mice, and other rodents like to move around. Since mice have the habit of grinding their teeth, with the increase in the amount of optical cable laying and the multi-directionality of the scenes, the interruption of optical fibers in the optical cable due to rodent gnawing is becoming more and more common.

[0003] In order to prevent rats, traditional optical cables will add a layer of FRP glass column cage sheath or armor protection on the outside of the inner cable. However, this method is too expensive and will cause the overall outer diameter of the optical cable to increase, while making the weight of the optical cable heavier, which is inconvenient for production and use. Therefore, the existing method is to mold a nylon sheath on the outside of the optical cable to provide protection without increasing the weight of the cable. However, when using this method, the outer sheath of the cable is generally extruded and then processed separately through a nylon sheath extrusion equipment. Both processes require water cooling, which lengthens the entire production line. This not only increases the equipment cost, but also prolongs the overall processing time of the optical cable, increases the production cost of the optical cable, and reduces profits.

[0004] Therefore, this case aims to provide an optical cable material heating device and a rodent-proof optical cable preparation method thereof, which can not only directly realize double-layer molding of optical cable materials in one device, but also complete double-layer molding using conventional production lines. At the same time, when the mold is replaced after the thermoforming is completed, the internal material liquid is not easily blocked, thereby making the production line production smoother and more efficient. Summary of the Invention

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

[0006] The present invention is achieved in that:

[0007] An optical cable material heating device comprises: a mounting seat, an extrusion mechanism provided on the mounting seat, a first hopper connected to the top of the extrusion mechanism, the extrusion mechanism comprising an extrusion box provided on the mounting seat, an extrusion screw provided in the extrusion box, the end of the extrusion screw connected to the extrusion seat, the outer surface of the optical cable being coated with an outer sheath when passing through the extrusion seat, and further comprising:

[0008] 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;

[0009] 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;

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] As a further improvement, the internal heating device includes an internal mounting rod that passes through the embedded block, the inner diameter of the internal mounting rod gradually decreases from the outside to the inside, and a heating terminal is connected to the end of the internal mounting rod, and the heating terminal is connected to the power terminal through the internal mounting rod.

[0018] The present invention also provides a method for preparing a rodent-proof optical cable, which uses the above-mentioned optical cable material heating device and includes the following steps:

[0019] S1: Rotate the side extrusion box to the top of the extrusion seat through the rotating member so that the lower adapter is docked with the extrusion seat, and feed the first feed hopper and the feed end of the side extrusion box at the same time;

[0020] S2: After the optical cable is tensioned by the tensioning structure, it is input into the extrusion seat. The optical cable first passes through the outer sheath flow channel of the inner mold to form an outer sheath on the outside of the optical cable, and then passes through the lateral flow channel to form a nylon sleeve.

[0021] S3: After all the optical cables have passed through, the internal heating device heats the internal fixing guide barrel to make the glue to be cooled in the internal fixing guide barrel flow out;

[0022] S4: Unscrew the embedded tube from the position of the internal fixed guide tube to make the internal fixed guide tube communicate with the outside, check whether the glue inside the internal fixed guide tube is completely removed, and then lock the embedded tube and the internal fixed guide tube.

[0023] The beneficial effects of the present invention are:

[0024] In the prior art, when processing optical cables, in order to improve the strength of the optical cables, other extrusion equipment is usually set up on the basis of the optical cables that already have an outer sheath to extrude additional protective structures. Although this method can improve the overall strength of the optical cable, it will extend the entire production line and require the addition of more auxiliary equipment. Therefore, the present invention adds a basic equipment on the basis of the original fusion sheath equipment by setting a two-stage melting structure. After the first extrusion molding, a second extrusion can be performed, thereby realizing two-stage processing on a single station, and the optical cable after the two-stage processing directly enters the cooling pool for cooling, which not only shortens the equipment for the sheath on the production line, but also reduces the equipment and devices for secondary cooling.

[0025] The two-stage melting structure can be switched for use according to working conditions. When it is not necessary to switch, the side fixing seat can be moved to other positions by the rotating motor in the rotating part, thereby avoiding affecting the normal use of the extrusion mechanism.

[0026] 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 mold structure, the two-stage melting structure needs to be docked with the extrusion seat. Therefore, the present invention arranges a lower adapter at the discharge position of the two-stage melting structure, docks the lower adapter with the extrusion seat through the docking tube, and then completes the two-stage precise discharging after being pressurized by the booster cylinder of the spiral structure.

[0027] 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 layers of protective structure to blend together, and the effect of multi-layer protection cannot be achieved. Therefore, the present invention sets an inner mold structure on the basis of the two-stage melting structure. Through the setting 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 correspond to the outer sheath flow channel and the lateral flow channel respectively, so as to carry out feeding on the two flow paths, thereby making the stratification of the two-layer protective structure more obvious, and at the same time does not affect the strength of the two protective structures.

[0028] In order to make the discharge speed of the outer sheath flow channel and the lateral flow channel different, 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 faster to form the outer sheath structure, the outer sheath flow channel is just a simple arc-shaped structure, while the lateral flow channel needs to be a little circuitous. Therefore, the lateral flow channel is not only set at a position farther back than the outer sheath flow channel, but also cannot adopt the conversion of multiple chutes and cutting channels, thereby slowing down the discharge of the outer sheath flow channel in one step, thereby realizing the formation of a two-stage protection structure.

[0029] The use of an inner mold structure to achieve two flow paths, but also leads to the complexity of the mold, thereby increasing the possibility of glue accumulation inside the mold, and the hardened glue will form a solid, blocking the interior of the extrusion equipment. Therefore, the present invention sets a seamless embedded structure, which can first heat the interior of the inner mold structure through the internal heating device after stopping the discharge, so that the slightly solidified glue flows out of the extrusion seat, and the glue can also be cleaned by disassembling the embedded cylinder to ensure that the internal glue does not remain inside the equipment, reducing the cleaning difficulty for operators.

[0030] In order to ensure the connection effect between the internal fixing guide cylinder, the extrusion seat and the inner mold, the internal fixing guide cylinder of the present invention is arranged between the extrusion seat and the inner mold. When the inside of the extrusion seat needs to be cleaned, the inner mold can be first unscrewed from the position of the threaded ring, and then the internal fixing guide cylinder inside the internal fixing guide cylinder can be processed separately. In this way, the inside of the extrusion seat can be cleaned after the operation is completed every day, thereby ensuring the uniformity of the optical cable wrapping.

[0031] During the cleaning process of the internal fixed guide tube, it is necessary to use a metal rod to extend into the interior to rotate 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, the present invention provides an embedded tube on the internal fixed guide tube, which can not only heat the interior of the internal fixed guide tube through the internal heating device to melt the glue and flow out, but also remove the embedded tube and clean the interior of the internal fixed guide tube directly from the side, ensuring that the glue does not remain inside the equipment overnight, allowing the new day's glue coating work to proceed normally, and the optical cable can be more uniform when glued. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0034] Figure 2 It is a schematic diagram of the top structure of the present invention.

[0035] Figure 3 This invention Figure 2 Cross-section of AA.

[0036] Figure 4 This invention Figure 2 Cross-section of the BB.

[0037] Figure 5 It is a structural schematic diagram of the internal fixation guide sleeve of the present invention.

[0038] Figure 6 It is a side view structural diagram of the embedded cylinder and the internal heating device of the present invention.

[0039] In the picture:

[0040] Mounting seat 10, extrusion mechanism 20, extrusion box 21, extrusion seat 22, two-stage melting structure 40, side fixing seat 41, side extrusion box 42, rotating part 43, inner fixing seat 431, rotating motor 432, side extrusion part 44, lower adapter 45, boosting cylinder 451, output cylinder 452, docking tube 453, inner mold structure 50, inner mold 51, outer sheath flow channel 52, lateral flow channel 53, first horizontal slide 531, cross-cutting channel 532, second horizontal slide 533, seamless embedded structure 60, inner fixed guide cylinder 61, threaded ring 611, reducing tube 612, micro-diameter tube 613, connecting column head 614, embedded cylinder 62, embedded block 621, alignment rod 622, inner heating device 63, inner mounting rod 631, heating terminal 632, power terminal 633. DETAILED DESCRIPTION

[0041] All embodiments of the present invention are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0042] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as referring to the purpose, technical solutions and advantages of the methods. To be clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 indicate or imply relative importance or implicitly indicate the number of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0043] Reference Figures 1 to 6As shown, a cable material heating device includes: a mounting seat 10, an extrusion mechanism 20 is provided on the mounting seat 10, the top of the extrusion mechanism 20 is connected to a first hopper 30, the extrusion mechanism 20 includes an extrusion box 21 provided on the mounting seat 10, an extrusion screw is provided in the extrusion box 21, the end of the extrusion screw is connected to the extrusion seat 22, and the outer surface of the optical cable is coated with an outer sheath when passing through the extrusion seat 22, and also includes: a two-stage melting structure 40, including a side fixing seat 41 provided on the side of the mounting seat 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 piece 44 is connected to the side extrusion box 42, the side extrusion piece 44 is connected to a lower adapter 45, and the side extrusion box 42 is rotated to the extrusion position via the rotating member 43. Above the seat 22, the side extrusion piece 44 adds the molten material into the extrusion seat 22 through the lower adapter 45; the inner mold structure 50 includes an inner mold 51 arranged in the extrusion seat 22, and the inner mold 51 is provided with an outer sheath flow channel 52 communicating with the extrusion screw and a lateral flow channel 53 communicating with the lower adapter 45, and the flow path of the lateral flow channel 53 is longer than the flow path of the outer sheath flow channel 52; the seamless embedded structure 60 includes an inner fixed guide tube 61 installed in the extrusion seat 22, one end of the inner fixed guide tube 61 is communicated with the optical cable inlet of the extrusion seat 22, and the other end of the inner fixed guide tube 61 is connected to the inner mold 51, and the outer peripheral surface of the inner fixed guide tube 61 is fixed by at least two embedded tubes 62, and the interior of the embedded tube 62 is provided with an internal heating device 63 attached to the inner fixed guide tube 61, and the internal heating device 63 is connected to an external power supply.

[0044] When the seamless embedded structure 60 needs to be disassembled, the shell outside the extrusion seat 22 needs to be removed first, so as to expose the position of the seamless embedded structure 60, thereby better handling the residual glue and improving safety under normal conditions.

[0045] In the prior art, when processing optical cables, in order to improve the strength of the optical cables, other extrusion equipment is usually set up on the basis of the optical cables that already have an outer sheath to extrude additional protective structures. Although this method can improve the overall strength of the optical cable, it will extend the entire production line and require the addition of more auxiliary equipment. Therefore, this embodiment provides a two-stage melting structure 40, which adds a basic equipment on the basis of the original melting sheath equipment. After the first extrusion molding, a second extrusion can be performed, thereby realizing two-stage processing on a single station, and the optical cable after the two-stage processing directly enters the cooling pool for cooling, which not only shortens the production line equipment for the sheath, but also reduces the equipment and devices for secondary cooling.

[0046] 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 provided in the inner fixing seat 431. The top of the rotating motor 432 is connected to the side extrusion box 42. When there is no need to switch, the side fixing seat 41 can be moved to other positions by the rotating motor 432 in the rotating member 43, thereby avoiding affecting the normal use of the extrusion mechanism 20.

[0047] During the use of the second-stage melting structure 40, in order to ensure that the second-stage melting structure 40 can better cooperate with the inner mold structure 50, the second-stage melting structure 40 needs to be docked with the extrusion seat 22. Therefore, the lower adapter 45 of this embodiment includes a booster cylinder 451 connected to the side extrusion box 42, and the lower end of the booster cylinder 451 is connected to an output cylinder 452, and the lower end of the output cylinder 452 is connected to a docking tube 453 connected to the top column tube of the extrusion seat 22. By setting the lower adapter 45 at the discharge position of the second-stage melting structure 40, docking with the extrusion seat 22 through the docking tube 453 of the lower adapter 45, and then pressurizing through the booster cylinder 451 with a spiral structure, the second-stage precise unloading can be completed.

[0048] After adopting the two-stage melting structure 40, although the effect of secondary extrusion molding can be achieved, if only the feeding speed is controlled, it is easy to cause the two layers of protective structure to blend together, and the effect of multi-layer protection cannot be achieved. Therefore, the present invention sets an inner mold structure 50 on the basis of the two-stage melting structure 40. Through the setting 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 correspond to the outer sheath flow channel 52 and the lateral flow channel 53 respectively, so as to perform feeding on the two flow paths, thereby making the stratification of the two-layer protective structure more obvious, and at the same time does not affect the strength of the two protective structures.

[0049] In order to make the discharge speed of the outer sheath flow channel 52 and the lateral flow channel 53 different, the outer sheath flow channel 52 of this embodiment 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 51, and 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 transverse channel 532, the transverse channel 532 is communicated with a second horizontal chute 533, and the second horizontal chute 533 is connected to the lower adapter 45. As for the inner cavity of the inner mold 51, the flow channel structures of the outer jacket runner 52 and the lateral runner 53 are different. Since the runner of the outer jacket runner 52 needs to discharge the material faster to form the outer jacket structure, the outer jacket runner 52 is just a simple arc-shaped structure, while the lateral runner 53 needs to be a little circuitous. Therefore, the lateral runner 53 is not only set at a position farther back than the outer jacket runner 52, but also cannot adopt the conversion of multiple chutes and cutting channels, so as to slow down the discharge of the outer jacket runner 52 in one step, thereby realizing the formation of a two-stage protection structure.

[0050] The setting of the inner mold structure 50 is adopted to realize two-stage flow paths, but it also leads to the complexity of the mold, which in turn increases the possibility of glue accumulation inside the mold. The hardened glue material will form a solid and block the interior of the extrusion equipment. Therefore, the present invention sets a seamless embedded structure 60. First, after stopping the discharge, the interior of the inner mold structure 50 can be heated through the internal heating device 63 to make the slightly solidified glue flow out of the extrusion seat 22. The glue can also be cleaned by removing the embedded cylinder 62 to ensure that the internal glue does not remain inside the equipment, reducing the cleaning difficulty for the operator.

[0051] In order to ensure the connection effect between the internal fixed guide cylinder 61 and the extrusion seat 22 and the inner mold 51, the internal fixed guide cylinder 61 of this embodiment includes a threaded ring 611 connected to the inner cavity of the inner mold 51, and the threaded ring 611 is connected to a reducing tube 612, and the reducing tube 612 is connected to a micro-diameter tube 613. The micro-diameter tube 613 is inserted into the feed port of the inner mold 51, and the internal fixed guide cylinder 61 is arranged between the extrusion seat 22 and the inner mold 51. When the inside of the extrusion seat 22 needs to be cleaned, the inner mold 51 can be first unscrewed from the position of the threaded ring 611, and then the internal fixed guide cylinder 61 on the inside of the internal fixed guide cylinder 61 can be processed separately, so that the inside of the extrusion seat 22 can be cleaned after the operation is completed every day, thereby ensuring the uniformity of the optical cable wrapping.

[0052] 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.

[0053] 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.

[0054] 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:

[0055] 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 feeding hopper 30 and the feeding end of the side extrusion box 42 are fed at the same time;

[0056] 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.

[0057] 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;

[0058] 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.

[0059] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An optical cable material heating device, comprising: A mounting seat (10) is provided with an extrusion mechanism (20), the top of the extrusion mechanism (20) is connected to a first feed hopper (30), the extrusion mechanism (20) comprises an extrusion box (21) provided on the mounting seat (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 the outer surface of the optical cable is coated with an outer sheath when passing through the extrusion seat (22), characterized in that it also includes: The two-stage melting structure (40) comprises a side fixing seat (41) arranged on the side of the mounting seat (10), a side extrusion box (42) is arranged 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 piece (44) is connected to the side extrusion box (42), the side extrusion piece (44) is connected to a lower adapter (45), and the side extrusion box (42) is rotated to the top of the extrusion seat (22) via the rotating member (43), so that the side extrusion piece (44) adds the molten material liquid into the extrusion seat (22) via the lower adapter (45); An inner mold structure (50) includes an inner mold (51) disposed within an extrusion seat (22), wherein the inner mold (51) is provided with an outer sheath flow channel (52) communicating with the extrusion screw and a lateral flow channel (53) communicating with the lower adapter (45), wherein the flow path of the lateral flow channel (53) is longer than the flow path of the outer sheath flow channel (52); A seamless embedded structure (60) comprises an inner fixed guide tube (61) installed in an extrusion seat (22), one end of the inner fixed guide tube (61) is communicated with the optical cable inlet of the extrusion seat (22), the other end of the inner fixed guide tube (61) is connected to the inner mold (51), the outer peripheral surface of the inner fixed guide tube (61) is fixed by at least two embedded tubes (62), the interior of the embedded tube (62) is provided with an inner heating device (63) attached to the inner fixed guide tube (61), 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) comprises an inner fixing seat (431) embedded in the side fixing seat (41), a rotating motor (432) is provided in the inner fixing seat (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 booster cylinder (451) connected to the side extrusion box (42), the lower end of the booster cylinder (451) is connected to an output cylinder (452), and the lower end of the output cylinder (452) is connected to a docking tube (453) connected to the top column tube of the extrusion seat (22).

4. The 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 is connected to the extrusion screw, and the liquid outlet end of the outer chute is connected to the inner cavity of the inner mold (51).

5. The optical cable material heating device 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. The 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. The 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 rodent-proof optical cable, using the optical cable material heating device according to any one of claims 1 to 8, 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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