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

Process for improving attenuation of butterfly-shaped optical cable and tooling die thereof Download PDF

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Publication number
CN114953340A
CN114953340A CN202210534408.1A CN202210534408A CN114953340A CN 114953340 A CN114953340 A CN 114953340A CN 202210534408 A CN202210534408 A CN 202210534408A CN 114953340 A CN114953340 A CN 114953340A
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mold
optical fiber
conical
hole
sleeve
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吴忠云
沈聪
钱镇国
沈新华
盛春敏
韦冬
谢松年
陈龙
朱博
吴军
万文波
王梦伟
蒋莹
丁赵伟
何侃云
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Zhejiang Dongtong Optical Network Iot Technology Co ltd
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Zhejiang Dongtong Optical Network Iot Technology Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/27Sprue channels ; Runner channels or runner nozzles

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Light Guides In General And Applications Therefor (AREA)

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

一种改善蝶形光缆衰减的工艺及其工装模具A process for improving attenuation of butterfly optical cable and its tooling die

技术领域technical field

本发明涉及压力机的技术领域,具体为一种改善蝶形光缆衰减的工艺,本发明还提供了一种改善蝶形光缆衰减的工装模具。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.

背景技术Background technique

随着国家现代化的建设的加快,对光缆的衰减要求越来越高,现有的蝶形光缆衰减偏大、其虽然发光端发送信号正常,但在接收端会因衰减过大造成收不到对端的信号或者受到信号太弱,无法正常通信,造成丢包严重甚至中断通信,特别是发生自燃灾害等重要情况下通信是非常重要的,不仅会影响搜救效率,还会造成重大的经济损失和财产损失,究其原因,现在蝶形光缆在制作过程中、其光纤被护套成型时挤压、且受到护套原料直接冲击,使得光纤受到影响,进而造成光缆的信号衰减问题;为此急需找到一种改善蝶形光缆衰减的工艺。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.

发明内容SUMMARY OF THE INVENTION

针对上述问题,本发明提供了一种改善蝶形光缆衰减的工艺,其使得光纤在成缆过程中受到的挤压小,确保光纤在成缆后的衰减小,保证蝶形光缆的品质。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.

一种改善蝶形光缆衰减的工艺,其特征在于:A process for improving attenuation of butterfly optical cable, characterized in that:

光纤的模芯的中心出口位置的上部位置和下部位置分别设置加强件,使得加强件分别置于光纤的上方位置和下方位置进入到模具流道内,模具流道对应于光纤的模芯的出口位置处为护套料交汇处,所述光纤和加强件沿着直线方向从模套口被拉拔出、此时光纤和加强件被护套包覆形成蝶形光缆;所述光纤对应于模芯的出口位置为锥形台的外凸中心点位置,护套料沿着模具流道和锥形台的锥面汇聚到光纤的外周、并在汇聚过程中被位于上部和下部的加强件缓冲。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.

其进一步特征在于:It is further characterized by:

所述模具流道为模芯和模套拼和形成的腔体,所述模具流道为自外周向中心汇聚的结构,腔体为两锥形面拼合形成的间距腔体,其使得护套料的流动包覆过程中和光纤存在倾角,降低了冲击力和挤压力;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;

所述锥形台螺纹拧装于模芯的中心孔位置、且锥形台前凸设置,所述锥形台的中心点位置贯穿有光纤贯穿孔,所述锥形台上还设置有上加强件贯穿孔、下加强件贯穿孔,所述模套口对应于光纤贯穿孔、上加强件贯穿孔、下加强件贯穿孔的线体运行的前端正中心位置布置。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.

一种改善蝶形光缆衰减的工装模具,其特征在于,其包括:A tooling die for improving attenuation of butterfly optical cable, characterized in that it comprises:

模套组件,其包括第一模套、第二模套;a mold sleeve assembly, which includes a first mold sleeve and a second mold sleeve;

以及模芯;and mold core;

所述第一模套朝向所述模芯一端的中心区域设置有内凹的锥形腔体,所述锥形腔体的中心位置设置有模套口;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;

所述第一模套和第二模套的相对端面的外环间通过模具挡杆、垫片固接连接;所述第二模套对应于所述锥形腔体的一端设置有外凸的锥形凸起,所述锥形凸起于所述锥形腔体间隔布置形成模具流道;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;

所述锥形凸起的中心为固设有模芯,所述第二模套的朝向所述模套口的位置固插有所述模芯,所述模芯的朝向所述模套口的端部为锥形台,所述模芯的中心位置设置有轴向贯穿的光纤贯穿孔,所述光纤贯穿孔贯穿所述锥形台的中心、轴向布置,所述模芯还设置有轴向贯穿的上加强件贯穿孔、下加强件贯穿孔,所述光纤贯穿孔位于上加强件贯穿孔、下加强件贯穿孔之间的位置。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.

其进一步特征在于:It is further characterized by:

所述第二模套的锥型凸起的中心位置设置有定位孔,所述模芯固插于所述定位孔内,所述锥形台的锥度和所述锥形凸起的外表面的锥度相同,确保护套料在填充时不会产生额外的阻力,且使得整个结构更换模芯即可进行其他型号的光缆成缆作业;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;

所述第一模套和第二模套的相对端面的外环间环布有若干个模具挡杆,且相对端面之间塞装有环形垫片,其使得第一模套和第二模套的间隔距离可调;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;

所述第二模套的远离所述第一模套的端面内凹形成收口导向槽,所述收口导向槽连通至所述模芯的轴向后端面位置,所述收口导向槽内用于引导光纤、加强件进入;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;

所述锥形台的前凸顶部为平面结构,所述光纤贯穿孔的孔径小于所述前凸顶部的直径,其使得沿着锥面流下的护套料变向缓冲后才环布于光纤的外周形成护套。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.

采用本发明的工艺后,护套料经过位于外环周的入料口进入到模具流道内,径向自外而内朝向加强件、光纤汇聚,由于光纤的上端和下端均设置有加强件,护套料汇聚时通过上端和下端的加强件缓冲冲击力,进而达到光纤时其冲击力很小,且护套料沿着模具流道和锥形台的锥面汇聚到光纤的外周、其和光纤的外周形成一锐角,其压力小,其使得光纤在成缆过程中受到的挤压小,确保光纤在成缆后的衰减小,保证蝶形光缆的品质。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.

附图说明Description of drawings

图1为本发明的工装模具的具体实施的主视图剖视图;Fig. 1 is the front view sectional view of the specific implementation of the tooling die of the present invention;

图2为本发明的具体实施例的锥形台的光纤贯穿孔位、上加强件贯穿孔、下加强件贯穿孔的布置示意图;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;

图中序号所对应的名称如下:The names corresponding to the serial numbers in the figure are as follows:

光纤100、加强件200Optical fiber 100, reinforcement 200

模套组件10、第一模套11、锥形腔体111、第二模套12、锥形凸起121、定位孔122、收口导向槽123、模芯20、具流道30、模套口40、锥形台50、光纤贯穿孔51、上加强件贯穿孔52、下加强件贯穿孔53、前凸顶部54、模具挡杆60、上模具挡杆61、下模具档杆62、垫片70。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.

具体实施方式Detailed ways

一种改善蝶形光缆衰减的工艺,见图1:光纤100的模芯20的中心出口位置的上部位置和下部位置分别设置加强件200,使得加强件200分别置于光纤100的上方位置和下方位置进入到模具流道30内,模具流道30对应于光纤100的模芯20的出口位置处为护套料交汇处,光纤100和加强件200沿着直线方向从模套口40被拉拔出、此时光纤100和加强件200被护套包覆形成蝶形光缆;光纤100对应于模芯20的出口位置为锥形台50的外凸中心点位置,护套料沿着模具流道30和锥形台50的锥面汇聚到光纤100的外周、并在汇聚过程中被位于上部和下部的加强件200缓冲。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.

具体实施时,模具流道30为模芯20和模套10拼和形成的腔体,模具流道30为自外周向中心汇聚的结构,腔体为两锥形面拼合形成的间距腔体,其使得护套料的流动包覆过程中和光纤100存在倾角,降低了冲击力和挤压力;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;

锥形台50固插于模芯20中心的定位孔位置、且锥形台50前凸设置,锥形台50的中心点位置贯穿有光纤贯穿孔51,锥形台50上还设置有上加强件贯穿孔52、下加强件贯穿孔53,模套口40对应于光纤贯穿孔51、上加强件贯穿孔52、下加强件贯穿孔53的线体运行的前端正中心位置布置。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 .

一种改善蝶形光缆衰减的工装模具,见图1、图2,其包括:A tooling die for improving the attenuation of butterfly optical cable is shown in Figure 1 and Figure 2, which includes:

模套组件10,其包括第一模套11、第二模套12;The mold sleeve assembly 10 includes a first mold sleeve 11 and a second mold sleeve 12;

以及模芯20;and the mold core 20;

第一模套11朝向模芯20一端的中心区域设置有内凹的锥形腔体111,锥形腔体111的中心位置设置有模套口40;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 ;

第一模套11和第二模套12的相对端面的外环间通过模具挡杆60、垫片70固接连接;第二模套12对应于锥形腔体111的一端设置有外凸的锥形凸起121,锥形凸起121于锥形腔体111间隔布置形成模具流道30;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;

锥形凸起121的中心为固设有模芯20,第二模套12的朝向模套口40的位置固插有模芯20,模芯20的朝向模套口的端部为锥形台50,模芯20的中心位置设置有轴向贯穿的光纤贯穿孔51,光纤贯穿孔51贯穿锥形台50的中心、轴向布置,模芯20还设置有轴向贯穿的上加强件贯穿孔52、下加强件贯穿孔53,光纤贯穿51孔位于上加强件贯穿孔52、下加强件贯穿孔53之间的位置。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.

具体实施时,上加强件贯穿孔52、下加强件贯穿孔53的出口位于锥形台50的锥面上;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;

第二模套12的锥型凸起121的中心位置设置有定位孔122,模芯20固插于定位孔122内,锥形台50的锥度和锥形凸起121的外表面的锥度相同,确保护套料在填充时不会产生额外的阻力,且使得整个结构更换模芯20即可进行其他型号的光缆成缆作业;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;

锥形台50的前凸顶部54为平面结构,光纤贯穿孔51的孔径小于前凸顶部54的直径,其使得沿着锥面流下的护套料变向缓冲后才环布于光纤的外周形成护套;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;

第一模套11和第二模套12的相对端面的外环间环布有若干个模具挡杆60,且相对端面之间塞装有环形垫片,其使得第一模套11和第二模套12的间隔距离可调;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;

第二模套12的远离第一模套11的端面内凹形成收口导向槽123,收口导向槽123连通至模芯20的轴向后端面位置,收口导向槽123内用于引导光纤100、加强件200进入,给生产人员实际操作中带来便利。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.

具体实施时,模套口40仿形于蝶形光缆的外护套设置,模芯20由高耐磨钨钢材料组成,不仅表面光滑而且耐磨,模芯20的呈锥形状的光纤贯穿孔51的出口位置通过加强件200挡护,使得护套料通过加强件200缓冲后再护套在光纤100上,在生产过程中减少护套料对光纤的挤压,减少生产中光纤的损耗,保证衰减合格;加强件孔的出口位于模芯20的圆锥坡度面上,减少了加强件200对光纤100的挤压受力;光纤贯穿孔51在模芯20的锥形台50最前端中心位置处,使光纤100在生产中不直接与护套料接触;模芯20锥形台50的前凸顶部54为平面结构,光纤贯穿孔51的孔径小于前凸顶部54的直径,顶部呈平台状,可以使得生产中护套料挤出压力平衡;第一模套11、第二模套12组合形成的模具流道30呈坡度状,保证了挤塑的稳定性;第一模套11的模套口40处采用高耐磨钨钢材质,增加模具的使用寿命;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;

第一模套11和第二模套12的相对端面的外环间环布有上模具挡杆61、下模具档杆62,上模具挡杆61、下模具档杆62的直径大小不同,防止模套的上下位置装反、起到防呆的作用;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;

根据生产需求对垫片70厚度进行调节,可以随时调节模芯20顶部与第一模套11间的距离;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;

其工作原理如下:护套料经过位于外环周的入料口进入到模具流道内,径向自外而内朝向加强件、光纤汇聚,由于光纤的上端和下端均设置有加强件,护套料汇聚时通过上端和下端的加强件缓冲冲击力,进而达到光纤时其冲击力很小,且护套料沿着模具流道和锥形台的锥面汇聚到光纤的外周、其和光纤的外周形成一锐角,其压力小,其使得光纤在成缆过程中受到的挤压小,确保光纤在成缆后的衰减小,保证蝶形光缆的品质。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.

对于本领域技术人员而言,显然本发明不限于上述示范性实施例的细节,而且在不背离本发明的精神或基本特征的情况下,能够以其他的具体形式实现本发明。因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限制性的,本发明的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。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.

此外,应当理解,虽然本说明书按照实施方式加以描述,但并非每个实施方式仅包含一个独立的技术方案,说明书的这种叙述方式仅仅是为清楚起见,本领域技术人员应当将说明书作为一个整体,各实施例中的技术方案也可以经适当组合,形成本领域技术人员可以理解的其他实施方式。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)

1.一种改善蝶形光缆衰减的工艺,其特征在于:1. a technique for improving attenuation of butterfly optical cable is characterized in that: 光纤的模芯的中心出口位置的上部位置和下部位置分别设置加强件,使得加强件分别置于光纤的上方位置和下方位置进入到模具流道内,模具流道对应于光纤的模芯的出口位置处为护套料交汇处,所述光纤和加强件沿着直线方向从模套口被拉拔出、此时光纤和加强件被护套包覆形成蝶形光缆;所述光纤对应于模芯的出口位置为锥形台的外凸中心点位置,护套料沿着模具流道和锥形台的锥面汇聚到光纤的外周、并在汇聚过程中被位于上部和下部的加强件缓冲。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.如权利要求1所述的一种改善蝶形光缆衰减的工艺,其特征在于:所述模具流道为模芯和模套拼和形成的腔体,所述模具流道为自外周向中心汇聚的结构,腔体为两锥形面拼合形成的间距腔体,其使得护套料的流动包覆过程中和光纤存在倾角。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.如权利要求1所述的一种改善蝶形光缆衰减的工艺,其特征在于:所述锥形台螺纹拧装于模芯的中心孔位置、且锥形台前凸设置,所述锥形台的中心点位置贯穿有光纤贯穿孔,所述锥形台上还设置有上加强件贯穿孔、下加强件贯穿孔,所述模套口对应于光纤贯穿孔、上加强件贯穿孔、下加强件贯穿孔的线体运行的前端正中心位置布置。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. 4.一种改善蝶形光缆衰减的工装模具,其特征在于,其包括:4. a tooling die for improving attenuation of butterfly optical cable, is characterized in that, it comprises: 模套组件,其包括第一模套、第二模套;a mold sleeve assembly, which includes a first mold sleeve and a second mold sleeve; 以及模芯;and mold core; 所述第一模套朝向所述模芯一端的中心区域设置有内凹的锥形腔体,所述锥形腔体的中心位置设置有模套口;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; 所述第一模套和第二模套的相对端面的外环间通过模具挡杆、垫片固接连接;所述第二模套对应于所述锥形腔体的一端设置有外凸的锥形凸起,所述锥形凸起于所述锥形腔体间隔布置形成模具流道;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; 所述锥形凸起的中心为固设有模芯,所述第二模套的朝向所述模套口的位置固插有所述模芯,所述模芯的朝向所述模套口的端部为锥形台,所述模芯的中心位置设置有轴向贯穿的光纤贯穿孔,所述光纤贯穿孔贯穿所述锥形台的中心、轴向布置,所述模芯还设置有轴向贯穿的上加强件贯穿孔、下加强件贯穿孔,所述光纤贯穿孔位于上加强件贯穿孔、下加强件贯穿孔之间的位置。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.如权利要求4所述的一种改善蝶形光缆衰减的工装模具,其特征在于:所述第二模套的锥型凸起的中心位置设置有定位孔,所述模芯固插于所述定位孔内,所述锥形台的锥度和所述锥形凸起的外表面的锥度相同。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.如权利要求4所述的一种改善蝶形光缆衰减的工装模具,其特征在于:所述第一模套和第二模套的相对端面的外环间环布有若干个模具挡杆,且相对端面之间塞装有环形垫片。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.如权利要求4所述的一种改善蝶形光缆衰减的工装模具,其特征在于:所述第二模套的远离所述第一模套的端面内凹形成收口导向槽,所述收口导向槽连通至所述模芯的轴向后端面位置,所述收口导向槽内用于引导光纤、加强件进入。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.如权利要求4所述的一种改善蝶形光缆衰减的工装模具,其特征在于:所述锥形台的前凸顶部为平面结构,所述光纤贯穿孔的孔径小于所述前凸顶部的直径。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.
CN202210534408.1A 2022-05-17 2022-05-17 Process for improving attenuation of butterfly-shaped optical cable and tooling die thereof Pending CN114953340A (en)

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