CN115308863A - An optical cable manufacturing process - Google Patents

Abstract

The invention relates to the technical field of optical cable manufacturing, and particularly discloses an optical cable manufacturing process. The optical cable manufacturing process comprises the following steps: putting the central reinforcing piece into a paste coating device, and coating the central reinforcing piece with paste through the paste coating device; winding a plurality of loose tubes outside of a central strength member to form a cable core; putting the cable core into a paste coating device, and coating the paste on the cable core through the paste coating device; and (3) putting the cable core into an extrusion molding device, and processing a sheath outside the cable core through the extrusion molding device. According to the invention, by means of twice coating of the factice, the situation that the pressure of the pressed factice needs to be adjusted repeatedly when the factice is pressed into the gap between the loose tubes and the inner part of the cable core by a pressure type factice machine can be avoided. Meanwhile, the filling of the cable core can be easily realized to be full through the mode of coating the factice for the second time, so that the condition that the inside of the cable core is filled incompletely and water seepage is avoided, and further the influence on the waterproof performance of the optical cable is avoided.

Description

A fiber optic cable manufacturing process

technical field

The invention relates to the technical field of optical cable manufacturing, in particular to an optical cable manufacturing process.

Background technique

The water seepage performance of the optical cable is one of the important factors to ensure the life of the optical cable, and it is an indicator that the optical cable manufacturers and operators are very concerned about. Because once the optical cable seeps into water, in a complex and changeable environment, the moisture and moisture outside the optical cable will penetrate and migrate to the optical cable, which will cause irreversible erosion to the optical fiber, affecting the life of the optical fiber and the stability of long-term transmission.

In the manufacturing process of existing optical cables, a pressure-type ointment machine is used to press the ointment into the gap between the loose tubes and the inside of the cable core. The pressure requirements are also different, and the pressure of pressing the ointment needs to be adjusted repeatedly, and when the ointment is pressed into the gap between the loose tubes and the inside of the cable core, the cable core is not easy to fill fully, and it is easy to cause the internal filling to be not full The situation of water seepage will affect the waterproof performance of the optical cable.

Contents of the invention

The purpose of the present invention is to provide a kind of optical cable manufacturing process to solve the problem in the prior art that when the ointment is pressed into the gap of the cable core and its interior, the cable core is not easy to fill fully, and it is easy to cause the internal filling to be insufficient and water seepage. Problems that affect the waterproof performance of optical cables.

For reaching above-mentioned purpose, the present invention adopts following technical scheme:

The invention provides an optical cable manufacturing process, which comprises the following steps:

Put the central reinforcement into the paste application device, and apply ointment on the above central reinforcement through the paste application device;

Wrapping a plurality of loose tubes outside the above-mentioned central strength member to form a cable core;

Put the above-mentioned cable core into the above-mentioned ointment device, and apply ointment on the above-mentioned cable core through the above-mentioned ointment device;

The cable core is put into the extruding device, and the sheath is processed outside the cable core by the extruding device to form an optical cable.

As an optional solution of the above-mentioned optical cable manufacturing process, the above-mentioned putting the central strengthening member into the pasting device includes: pulling the above-mentioned central strengthening member along a straight line, so that the above-mentioned central strengthening member passes through the first soft part of the above-mentioned pasting device Quality scraping cream mold.

As an optional solution for the manufacturing process of the above-mentioned optical cable, the diameter of the oil-scraping hole of the above-mentioned first soft oil-shaving paste mold is larger than the diameter of the above-mentioned central reinforcement, and the diameter of the oil-scraping hole of the above-mentioned first soft oil-shaving paste mold is The diameter difference between the hole diameter and the diameter of the above-mentioned central reinforcement is in the range of 0.6 mm to 1 mm.

As an optional solution for the manufacturing process of the above-mentioned optical cable, the above-mentioned winding a plurality of loose tubes on the outside of the above-mentioned central strength member to form a cable core includes: using SZ twisting to wind a plurality of the above-mentioned loose tubes on the above-mentioned center The outer side of the reinforcement member is used to narrow the gap between any two adjacent loose tubes.

As an optional solution for the manufacturing process of the above-mentioned optical cable, the above-mentioned winding a plurality of loose tubes on the outside of the above-mentioned central strength member to form a cable core also includes: fixing the multiple above-mentioned loose tubes on the above-mentioned center by means of yarn binding on the reinforcement.

As an optional solution for the manufacturing process of the above-mentioned optical cable, the above-mentioned putting the above-mentioned cable core into the above-mentioned pasting device includes: pulling the above-mentioned cable core along a straight line, so that the above-mentioned cable core passes through the second soft material of the above-mentioned pasting device Scrape grease mold.

As an optional solution of the optical cable manufacturing process, the diameter of the oil scraping hole of the second soft grease scraping mold is smaller than or equal to the diameter of the cable core.

As an optional solution of the above-mentioned optical cable manufacturing process, after putting the above-mentioned cable core into the above-mentioned pasting device and before putting the above-mentioned cable core into the above-mentioned extruding device, it also includes: The metal strip is arranged outside the above-mentioned cable core.

As an optional solution of the optical cable manufacturing process, after the sheath is processed outside the cable core by the extrusion device, the method further includes: measuring the diameter of the optical cable, and performing spark detection on the optical cable.

As an optional solution of the optical cable manufacturing process, before measuring the diameter of the optical cable, the method further includes: cooling the sheath.

The beneficial effects of the present invention are:

In the optical cable manufacturing process, the central strength member is first put into the ointment device, and ointment is applied on the center strength element through the ointment device, and then a plurality of loose tubes are wound on the ointment-coated center strength member. Then use the paste applicator to apply ointment on multiple loose tubes, and then apply the ointment twice to avoid the problem of using a pressure type ointment machine to press the ointment between the loose tubes In the gap and inside the cable core, it is necessary to repeatedly adjust the pressure of the grease. At the same time, the filling of the cable core can be easily achieved through the way of secondary coating of ointment, so as to avoid the situation that the inner filling of the cable core is not full and water seepage, thereby avoiding the impact on the waterproof performance of the optical cable. Wherein, the cable core is put into the extruding device, and a sheath is processed outside the cable core by the extruding device to protect the cable core.

Description of drawings

FIG. 1 is a schematic flow chart of an optical cable manufacturing process provided by an embodiment of the present invention.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. Wherein, the terms "first position" and "second position" are two different positions, and "above", "above" and "above" the first feature on the second feature include that the first feature is on the second feature. Directly above and obliquely above, or simply means that the first feature level is higher than the second feature. "Below", "under" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

This embodiment provides an optical cable manufacturing process for manufacturing optical cables.

As shown in Figure 1, the optical cable manufacturing process includes the following steps:

Put the center reinforcement into the paste applicator, and apply ointment on the center reinforcement through the paste applicator;

Multiple loose tubes are wound outside the central strength member to form the cable core;

Put the cable core into the ointment device, and apply ointment on the cable core through the ointment device;

The cable core is put into the extrusion device, and the sheath is processed outside the cable core by the extrusion device to form an optical cable.

In the optical cable manufacturing process, the central strength member is first put into the ointment device, and ointment is applied on the center strength element through the ointment device, and then a plurality of loose tubes are wound on the ointment-coated center strength member. Then use the paste applicator to apply ointment on multiple loose tubes, and then apply the ointment twice to avoid the problem of using a pressure type ointment machine to press the ointment between the loose tubes In the gap and inside the cable core, it is necessary to repeatedly adjust the pressure of the grease. At the same time, the filling of the cable core can be easily achieved through the way of secondary coating of ointment, so as to avoid the situation that the inner filling of the cable core is not full and water seepage, thereby avoiding the impact on the waterproof performance of the optical cable. Wherein, the cable core is put into the extruding device, and a sheath is processed outside the cable core by the extruding device to protect the cable core.

Specifically, putting the central reinforcement into the paste application device includes pulling the central reinforcement along a straight line so that the central reinforcement passes through the first soft squeegee paste mold of the paste application device, and then pulling the central reinforcement along a straight line , enabling the first soft scraping paste mold to evenly coat the outer surface of the central reinforcement with ointment, so as to avoid bending of the central reinforcement during the process of coating the ointment. Wherein, when the diameter of the central reinforcing member fluctuates and becomes larger, the central reinforcing member can slightly squeeze and expand the oil scraping hole aperture of the first soft oil scraping paste mold, thereby avoiding central reinforcement caused by factors such as fluctuations in the diameter of the central reinforcing member. The card is broken, so as to reduce the occurrence of abnormalities. Optionally, the aperture of the oil scraping hole of the first soft grease scraping paste mold is larger than the diameter of the central reinforcement, and the diameter between the aperture of the oil scraping hole of the first soft grease scraping paste mold and the diameter of the central reinforcement is The difference range is 0.6mm ~ 1mm, so as to ensure that the first soft grease scraping mold can apply the ointment to the central reinforcement, and at the same time prevent the first soft grease scraping mold from directly scraping the grease on the central reinforcement Lose.

Further, a plurality of loose tubes are wound outside the central reinforcement to form a cable core, including winding a plurality of loose tubes outside the central reinforcement by SZ stranding, so as to reduce the size of any two adjacent loose tubes The gap between the core, that is, to reduce the overall diameter of the cable core, no need to keep the gap between the loose tube and the loose tube, and then the diameter of the central strength member can be made smaller, so that the overall diameter of the cable is made smaller, in order to ensure On the basis of optical cable mechanical properties and environmental performance, a large amount of materials can be saved, costs can be reduced, and product competitiveness can be enhanced. At the same time, winding a plurality of loose tubes on the outside of the central reinforcement to form a cable core, and fixing the plurality of loose tubes on the central reinforcement by means of binding yarns to avoid falling off of the loose tubes, and binding the yarns The final core can then be wound on drums for transport as an intermediate product.

Further, putting the cable core into the plastering device includes pulling the cable core along a straight line so that the cable core passes through the second soft scraping grease mold of the plastering device, and then pulling the cable core along a straight line can make the second Second, the soft grease scraping mold evenly coats the outer surface of the cable core with grease to avoid bending of the cable core during the process of coating the grease. Among them, when coating a cable core with a larger diameter, the cable core can squeeze and expand the oil scraping hole aperture of the second soft oil scraping paste mold, thereby avoiding the cable core from being broken due to factors such as fluctuations in the diameter of the cable core. This reduction exception occurs. Optionally, the aperture of the oil scraping hole of the second soft grease scraping mold is smaller than or equal to the diameter of the cable core, thereby ensuring that the second soft grease scraping mold can apply the grease to the loose tube and the loose tube in the arc groove between them.

Further, after the cable core is put into the paste coating device and before the cable core is put into the extruding device, it is also included to set the metal strip on the outside of the cable core by longitudinal wrapping to seal the cable core Protection, to prevent the ointment from falling off the cable core, and in the process of processing the sheath, to prevent the ointment from contaminating the extrusion device. At the same time, after processing the sheath outside the cable core through the extrusion device, it also includes measuring the diameter of the optical cable and performing spark detection on the optical cable to ensure that the diameter of the optical cable meets the requirements of the optical cable manufacturing process, and at the same time detect whether the optical cable has any loopholes. Broken skin and surface impurities, among which, measuring the diameter of the optical cable first can also facilitate the adjustment of the equipment used for spark detection, so as to improve the accuracy of spark detection. Optionally, before measuring the diameter of the optical cable, cooling the sheath is also included, so as to prevent unsolidified ointment and the sheath softened at high temperature from affecting the measurement of the diameter of the optical cable and causing measurement errors.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

1. An optical cable manufacturing process is characterized by comprising the following steps:

putting a central reinforcing piece into a paste coating device, and coating paste on the central reinforcing piece through the paste coating device;

winding a plurality of loose tubes outside the central strength member to form a cable core;

putting the cable core into the paste coating device, and coating the paste on the cable core through the paste coating device;

and putting the cable core into an extrusion molding device, and processing a sheath outside the cable core through the extrusion molding device to form the optical cable.

2. The fiber optic cable manufacturing process of claim 1, wherein placing the central strength member in a pasting device comprises: pulling the central stiffener in a straight line so that the central stiffener passes through a first soft squeegee die of the paste applicator.

3. The optical cable manufacturing process according to claim 2, wherein the diameter of the oil scraping hole of the first soft ointment scraping die is larger than the diameter of the central reinforcing member, and the diameter difference between the diameter of the oil scraping hole of the first soft ointment scraping die and the diameter of the central reinforcing member is in the range of 0.6mm to 1mm.

4. The fiber optic cable manufacturing process of claim 1, wherein the winding a plurality of loose tubes outside the central strength member to form a cable core comprises: and winding a plurality of the loose tubes on the outer side of the central reinforcing member in an SZ twisting manner to reduce a gap between any two adjacent loose tubes.

5. The fiber optic cable manufacturing process of claim 1, wherein the winding of the plurality of loose tubes outside the central strength member to form a cable core further comprises: a plurality of said loose tubes are secured to said central reinforcement member by means of a tying yarn.

6. The optical cable manufacturing process of claim 1, wherein said placing said cable core into said pasting device comprises: and drawing the cable core along a straight line so that the cable core passes through a second soft ointment scraping die of the ointment applying device.

7. The optical cable manufacturing process according to claim 6, wherein the aperture of the oil scraping hole of the second soft oil scraping die is smaller than or equal to the diameter of the cable core.

8. The process for manufacturing an optical cable according to claim 1, further comprising, after placing said cable core in said pasting device and before placing said cable core in said extrusion device: and arranging a metal belt outside the cable core in a longitudinal covering and forming mode.

9. The process for manufacturing an optical cable according to claim 1, further comprising, after the step of processing a sheath outside the cable core by the extrusion device: measuring the diameter of the fiber optic cable and performing spark detection on the fiber optic cable.

10. The process for manufacturing an optical cable according to claim 9, further comprising, before measuring the diameter of the optical cable: cooling the jacket.

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