CN114953340A - Process for improving attenuation of butterfly-shaped optical cable and tooling die thereof - Google Patents

Abstract

The invention provides a process for improving the attenuation of a butterfly-shaped optical cable, and also provides a tooling die for improving the attenuation of the butterfly-shaped optical cable, so that the optical fiber is slightly extruded in the cabling process, the attenuation of the optical fiber after cabling is ensured to be small, and the quality of the butterfly-shaped optical cable is ensured. A process for improving attenuation of a butterfly-shaped optical cable comprises the following steps: the upper part and the lower part of the central outlet position of the optical fiber mold core are respectively provided with a reinforcing piece, so that the reinforcing pieces are respectively arranged at the upper position and the lower position of the optical fiber and enter a mold runner, the position of the mold runner, which corresponds to the outlet position of the optical fiber mold core, is a sheath material intersection, the optical fiber and the reinforcing pieces are pulled out from a mold sleeve opening along the linear direction, and the optical fiber and the reinforcing pieces are coated by a sheath to form a butterfly-shaped optical cable; the outlet position of the optical fiber corresponding to the mold core is the convex central point position of the conical table, and the sheath material is converged to the periphery of the optical fiber along the mold flow channel and the conical surface of the conical table and is buffered by the reinforcing parts positioned at the upper part and the lower part in the converging process.

Description

A process for improving attenuation of butterfly optical cable and its tooling die

technical field

The invention relates to the technical field of presses, in particular to a process for improving attenuation of butterfly optical cables, and also provides a tooling die for improving attenuation of butterfly optical cables.

Background technique

With the acceleration of the country's modernization construction, the attenuation requirements of optical cables are getting higher and higher. The existing butterfly optical cables have large attenuation. Although the light-emitting end sends signals normally, it will not be received at the receiving end due to excessive attenuation. The signal of the opposite end or the received signal is too weak to communicate normally, resulting in serious packet loss or even interruption of communication, especially in important situations such as spontaneous combustion disasters. The reason for property loss is that during the production process of the butterfly optical cable, the optical fiber is squeezed by the sheath and directly impacted by the sheath material, which affects the optical fiber and causes the signal attenuation problem of the optical cable; this is urgently needed. Find a process to improve the attenuation of fiber optic cables.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides a process for improving the attenuation of a butterfly optical cable, which makes the optical fiber less squeezed during the cabling process, ensures that the attenuation of the optical fiber after cabling is small, and ensures the quality of the butterfly optical cable.

A process for improving attenuation of butterfly optical cable, characterized in that:

The upper and lower positions of the central outlet position of the core of the optical fiber are respectively provided with reinforcements, so that the reinforcements are respectively placed at the upper and lower positions of the optical fiber and enter the mold runner, and the mold runner corresponds to the outlet position of the core of the optical fiber. The place is the intersection of the sheath material, the optical fiber and the reinforcing member are pulled out from the mold sleeve along the straight direction, and at this time, the optical fiber and the reinforcing member are covered by the sheath to form a butterfly optical cable; the optical fiber corresponds to the mold core The exit position is the position of the convex center point of the conical table, and the sheath material converges to the outer circumference of the optical fiber along the mold runner and the conical surface of the conical table, and is buffered by the upper and lower reinforcements during the convergence process.

It is further characterized by:

The mold flow channel is a cavity formed by the combination of the mold core and the mold sleeve, the mold flow channel is a structure that converges from the outer circumference to the center, and the cavity is a spaced cavity formed by combining two conical surfaces, which makes the sheath During the flow coating process of the material, there is an inclination angle with the optical fiber, which reduces the impact force and extrusion force;

The conical table is screwed into the center hole of the mold core, and the front of the conical table is convexly arranged. The center point of the conical table is provided with an optical fiber through hole, and an upper reinforcement is also arranged on the conical table. The through-holes of the fiber optic, the through-holes of the upper reinforcement and the through-holes of the lower reinforcement are arranged in the front center of the wire body running.

A tooling die for improving attenuation of butterfly optical cable, characterized in that it comprises:

a mold sleeve assembly, which includes a first mold sleeve and a second mold sleeve;

and mold core;

A concave conical cavity is provided in the central area of one end of the first mold sleeve facing the mold core, and a mold sleeve opening is disposed in the center of the conical cavity;

The outer rings of the opposite end faces of the first mold sleeve and the second mold sleeve are fixedly connected by a mold stopper and a gasket; one end of the second mold sleeve corresponding to the conical cavity is provided with an outwardly convex. Conical protrusions, the conical protrusions are arranged at intervals in the conical cavity to form a mold flow channel;

The center of the conical protrusion is fixed with a mold core, the position of the second mold sleeve facing the mold sleeve opening is fixedly inserted with the mold core, and the mold core is facing the mold sleeve opening. The end is a conical table, the center of the core is provided with an axially penetrating optical fiber through hole, the optical fiber through hole penetrates the center of the conical table and is axially arranged, and the mold core is also provided with a shaft The through-hole of the upper reinforcement member and the through-hole of the lower reinforcement member are penetrated, and the optical fiber through-hole is located between the through-hole of the upper reinforcement member and the through-hole of the lower reinforcement member.

It is further characterized by:

The center position of the conical protrusion of the second die sleeve is provided with a positioning hole, the mold core is fixedly inserted in the positioning hole, and the taper of the conical frustum and the outer surface of the conical protrusion are different from each other. The taper is the same to ensure that the sheath material will not generate additional resistance when filling, and the entire structure can be used for other types of optical cables by replacing the core;

Several mold stop bars are arranged between the outer rings of the opposite end faces of the first die sleeve and the second die sleeve, and annular gaskets are plugged between the opposite end faces, which makes the first die sleeve and the second die sleeve. The interval distance is adjustable;

The end face of the second die sleeve away from the first die sleeve is concave to form a concave guide groove, the constriction guide groove communicates with the axial rear end surface of the mold core, and the constriction guide groove is used for guiding Optical fiber and reinforcements enter;

The front convex top of the tapered stage is a plane structure, and the diameter of the optical fiber through hole is smaller than the diameter of the front convex top, which makes the jacket material flowing down the tapered surface redirected and buffered before being distributed around the fiber. The outer periphery forms a sheath.

After the process of the present invention is adopted, the sheath material enters the mold flow channel through the feeding port located on the outer circumference, and converges radially from the outside to the inside toward the reinforcing member and the optical fiber. Since the upper and lower ends of the optical fiber are provided with reinforcing members, When the jacket material converges, the impact force is buffered by the reinforcements at the upper and lower ends, and the impact force is very small when reaching the optical fiber, and the jacket material converges to the outer periphery of the optical fiber, its The outer circumference of the optical fiber forms an acute angle, and its pressure is small, which makes the optical fiber squeeze less during the cabling process, ensures that the attenuation of the optical fiber after cabling is small, and ensures the quality of the butterfly optical cable.

Description of drawings

Fig. 1 is the front view sectional view of the specific implementation of the tooling die of the present invention;

2 is a schematic diagram of the arrangement of the optical fiber through holes, the upper reinforcement through holes, and the lower reinforcement through holes of the conical table according to the specific embodiment of the present invention;

The names corresponding to the serial numbers in the figure are as follows:

Optical fiber 100, reinforcement 200

Mold sleeve assembly 10, first mold sleeve 11, conical cavity 111, second mold sleeve 12, conical protrusion 121, positioning hole 122, closing guide groove 123, mold core 20, runner 30, mold sleeve mouth 40. Conical table 50, optical fiber through hole 51, upper reinforcement through hole 52, lower reinforcement through hole 53, front convex top 54, mold blocking rod 60, upper mold blocking rod 61, lower mold blocking rod 62, gasket 70.

Detailed ways

A process for improving the attenuation of a butterfly cable, see Figure 1: the upper position and the lower position of the center exit position of the core 20 of the optical fiber 100 are respectively provided with reinforcing members 200, so that the reinforcing members 200 are placed above and below the optical fiber 100 respectively. The position enters into the mold runner 30. The position of the mold runner 30 corresponding to the outlet of the core 20 of the optical fiber 100 is the intersection of the sheath materials. At this time, the optical fiber 100 and the reinforcing member 200 are covered by the sheath to form a butterfly optical fiber cable; the exit position of the optical fiber 100 corresponding to the mold core 20 is the position of the convex center point of the conical table 50, and the sheath material runs along the mold flow channel. The tapered surfaces of the tapered stage 30 and the tapered stage 50 converge to the outer circumference of the optical fiber 100 and are buffered by the stiffeners 200 located at the upper and lower portions during the convergence.

In specific implementation, the mold flow channel 30 is a cavity formed by the combination of the mold core 20 and the mold sleeve 10, the mold flow channel 30 is a structure that converges from the outer circumference to the center, and the cavity is a spaced cavity formed by splicing two conical surfaces. It makes there exist an inclination angle with the optical fiber 100 during the flow coating process of the sheath material, which reduces the impact force and the extrusion force;

The conical table 50 is fixedly inserted at the position of the positioning hole in the center of the mold core 20, and the conical table 50 is arranged in a protruding front. The center point of the conical table 50 is provided with an optical fiber through hole 51, and the conical table 50 is also provided with an upper reinforcement There are through holes 52 and 53 for the lower reinforcement, and the die sleeve opening 40 corresponds to the center position of the front end of the optical fiber through holes 51 , the upper reinforcement through holes 52 and the lower reinforcement through holes 53 .

A tooling die for improving the attenuation of butterfly optical cable is shown in Figure 1 and Figure 2, which includes:

The mold sleeve assembly 10 includes a first mold sleeve 11 and a second mold sleeve 12;

and the mold core 20;

A concave conical cavity 111 is provided in the central area of one end of the first mold sleeve 11 facing the mold core 20 , and a mold sleeve opening 40 is disposed in the center of the conical cavity 111 ;

The outer rings of the opposite end faces of the first mold sleeve 11 and the second mold sleeve 12 are fixedly connected by the mold stopper 60 and the gasket 70; Conical protrusions 121, the conical protrusions 121 are arranged at intervals in the conical cavity 111 to form the mold flow channel 30;

The center of the conical protrusion 121 is fixed with the mold core 20, the second mold sleeve 12 is fixedly inserted with the mold core 20 at the position facing the mold sleeve port 40, and the end of the mold core 20 facing the mold sleeve port is a conical platform 50, the central position of the core 20 is provided with an axially penetrating optical fiber through hole 51, the optical fiber through hole 51 is arranged through the center of the conical table 50, and the axial direction is arranged, and the core 20 is also provided with an axially penetrating upper reinforcement through hole. 52. The lower reinforcement member through hole 53, the optical fiber penetration hole 51 is located between the upper reinforcement member penetration hole 52 and the lower reinforcement member penetration hole 53.

In specific implementation, the outlet of the upper reinforcement through hole 52 and the lower reinforcement through hole 53 are located on the conical surface of the conical table 50;

A positioning hole 122 is provided at the center of the conical protrusion 121 of the second die sleeve 12, and the mold core 20 is fixedly inserted in the positioning hole 122. It is ensured that the sheath material does not generate additional resistance when filling, and the entire structure can be used for other types of optical cables by replacing the core 20;

The front convex top 54 of the tapered stage 50 is a plane structure, and the diameter of the optical fiber through hole 51 is smaller than the diameter of the front convex top 54, so that the jacket material flowing down the tapered surface is redirected and buffered before being distributed around the outer periphery of the optical fiber. jacket;

A number of mold stop bars 60 are arranged between the outer rings of the opposite end faces of the first die sleeve 11 and the second die sleeve 12, and annular gaskets are plugged between the opposite end faces, which makes the first die sleeve 11 and the second die sleeve 12. The spacing distance of the mold sleeve 12 is adjustable;

The end face of the second mold sleeve 12 away from the first mold sleeve 11 is concavely formed to form a concave guide groove 123, which is connected to the axial rear end surface of the mold core 20. The closed guide groove 123 is used to guide the optical fiber 100, strengthen the 200 pieces are entered, which brings convenience to the actual operation of the production personnel.

In the specific implementation, the mold sleeve opening 40 is set on the outer sheath of the butterfly optical cable, the mold core 20 is made of high wear-resistant tungsten steel material, not only the surface is smooth and wear-resistant, and the tapered optical fiber through hole of the mold core 20 The exit position of 51 is protected by the reinforcement 200, so that the sheath material is buffered by the reinforcement 200 and then sheathed on the optical fiber 100, which reduces the extrusion of the optical fiber by the sheath material during the production process and reduces the loss of the optical fiber during production. To ensure qualified attenuation; the outlet of the reinforcement hole is located on the conical slope surface of the mold core 20, which reduces the extrusion force of the reinforcement 200 on the optical fiber 100; At this point, the optical fiber 100 is not directly contacted with the sheath material during production; the front convex top 54 of the conical table 50 of the mold core 20 is a plane structure, the diameter of the optical fiber through hole 51 is smaller than the diameter of the front convex top 54, and the top is platform-shaped , which can balance the extrusion pressure of the sheath material during production; the mold flow channel 30 formed by the combination of the first mold sleeve 11 and the second mold sleeve 12 is slope-shaped, which ensures the stability of extrusion; the mold of the first mold sleeve 11 The 40 parts of the sleeve are made of high wear-resistant tungsten steel to increase the service life of the mold;

The outer rings of the opposite end faces of the first die sleeve 11 and the second die sleeve 12 are surrounded by an upper die stop bar 61 and a lower die stop bar 62. The diameters of the upper die stop bar 61 and the lower die stop bar 62 are different, preventing The upper and lower positions of the mold sleeve are installed in reverse, which plays a foolproof role;

The thickness of the gasket 70 is adjusted according to the production requirements, and the distance between the top of the mold core 20 and the first mold sleeve 11 can be adjusted at any time;

Its working principle is as follows: the sheath material enters the mold flow channel through the feeding port located on the outer circumference, and converges radially from the outside to the inside toward the reinforcement and the optical fiber. Since the upper and lower ends of the optical fiber are provided with reinforcement, the sheath When the material converges, the impact force is buffered by the reinforcements at the upper and lower ends, and the impact force is very small when reaching the optical fiber, and the sheath material converges to the outer circumference of the optical fiber along the mold runner and the tapered surface of the conical susceptor. The outer circumference forms an acute angle, and its pressure is small, which makes the optical fiber squeeze less during the cabling process, ensures that the attenuation of the optical fiber after cabling is small, and ensures the quality of the butterfly optical cable.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (8)

1. a technique for improving attenuation of butterfly optical cable is characterized in that: The upper and lower positions of the central outlet position of the core of the optical fiber are respectively provided with reinforcements, so that the reinforcements are respectively placed at the upper and lower positions of the optical fiber and enter the mold runner, and the mold runner corresponds to the outlet position of the core of the optical fiber. The place is the intersection of the sheath material, the optical fiber and the reinforcing member are pulled out from the mold sleeve along the straight direction, and at this time, the optical fiber and the reinforcing member are covered by the sheath to form a butterfly optical cable; the optical fiber corresponds to the mold core The exit position is the position of the convex center point of the conical table, and the sheath material converges to the outer circumference of the optical fiber along the mold runner and the conical surface of the conical table, and is buffered by the upper and lower reinforcements during the convergence process. 2. a kind of technology that improves the attenuation of butterfly optical cable as claimed in claim 1, is characterized in that: described mould runner is the cavity that mould core and mould sleeve are assembled and formed, and described mould runner is from outer circumferential direction In the center-converged structure, the cavity is a spaced cavity formed by splicing two conical surfaces together, which makes an inclination angle exist between the sheath material and the optical fiber during the flow coating process. 3. A process for improving attenuation of butterfly optical cable as claimed in claim 1, characterized in that: the conical table screw is screwed to the center hole position of the mold core, and the conical table is convexly arranged, and the cone An optical fiber through hole runs through the center point of the shaped table, and an upper reinforcement through hole and a lower reinforcement through hole are also arranged on the conical stage. The mold sleeve opening corresponds to the optical fiber through hole, the upper reinforcement through hole, The front end of the line body running through the hole of the lower reinforcement is arranged at the center position. 4. a tooling die for improving attenuation of butterfly optical cable, is characterized in that, it comprises: a mold sleeve assembly, which includes a first mold sleeve and a second mold sleeve; and mold core; A concave conical cavity is provided in the central area of one end of the first mold sleeve facing the mold core, and a mold sleeve opening is disposed in the center of the conical cavity; The outer rings of the opposite end faces of the first mold sleeve and the second mold sleeve are fixedly connected by a mold stopper and a gasket; one end of the second mold sleeve corresponding to the conical cavity is provided with an outwardly convex. Conical protrusions, the conical protrusions are arranged at intervals in the conical cavity to form a mold flow channel; The center of the conical protrusion is fixed with a mold core, the position of the second mold sleeve facing the mold sleeve opening is fixedly inserted with the mold core, and the mold core is facing the mold sleeve opening. The end is a conical table, the center of the core is provided with an axially penetrating optical fiber through hole, the optical fiber through hole penetrates the center of the conical table and is axially arranged, and the mold core is also provided with a shaft The through-hole of the upper reinforcement member and the through-hole of the lower reinforcement member are penetrated, and the optical fiber through-hole is located between the through-hole of the upper reinforcement member and the through-hole of the lower reinforcement member. 5. A tooling die for improving attenuation of butterfly optical cable as claimed in claim 4, characterized in that: the center position of the conical protrusion of the second die sleeve is provided with a positioning hole, and the die core is fixedly inserted in the In the positioning hole, the taper of the conical frustum is the same as the taper of the outer surface of the conical protrusion. 6. A kind of tooling die for improving the attenuation of butterfly optical cable as claimed in claim 4, it is characterized in that: the outer rings of the opposite end faces of the first die sleeve and the second die sleeve are annularly arranged with several die stop bars , and an annular gasket is plugged between the opposite end faces. 7. The tooling die for improving the attenuation of butterfly optical cable according to claim 4, wherein the end face of the second die sleeve away from the first die sleeve is concavely formed into a concave guide groove, and the constriction The guide groove is communicated with the axial rear end surface of the mold core, and the closed guide groove is used for guiding the entry of optical fibers and reinforcing elements. 8. The tooling die for improving attenuation of butterfly optical cable according to claim 4, wherein the front convex top of the conical table is a plane structure, and the diameter of the optical fiber through hole is smaller than the front convex top diameter of.

Images