CN114156348A - An end cap of a photoelectric component, a photoelectric component and a manufacturing method of the end cap - Google Patents
An end cap of a photoelectric component, a photoelectric component and a manufacturing method of the end cap Download PDFInfo
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- CN114156348A CN114156348A CN202110529412.4A CN202110529412A CN114156348A CN 114156348 A CN114156348 A CN 114156348A CN 202110529412 A CN202110529412 A CN 202110529412A CN 114156348 A CN114156348 A CN 114156348A
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Images
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
- G02B6/4427—Pressure resistant cables, e.g. undersea cables
- G02B6/4428—Penetrator systems in pressure-resistant devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/50—Encapsulations or containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection 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
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C45/14377—Coating a portion of the article, e.g. the edge of the article using an additional insert, e.g. a fastening element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1671—Making multilayered or multicoloured articles with an insert
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3632—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means
- G02B6/3644—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means the coupling means being through-holes or wall apertures
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3684—Mechanical coupling means for mounting fibres to supporting carriers characterised by the manufacturing process of surface profiling of the supporting carrier
- G02B6/3696—Mechanical coupling means for mounting fibres to supporting carriers characterised by the manufacturing process of surface profiling of the supporting carrier by moulding, e.g. injection moulding, casting, embossing, stamping, stenciling, printing, or with metallic mould insert manufacturing using LIGA or MIGA techniques
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3816—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres for use under water, high pressure connectors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3865—Details of mounting fibres in ferrules; Assembly methods; Manufacture fabricated by using moulding techniques
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4248—Feed-through connections for the hermetical passage of fibres through a package wall
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4251—Sealed packages
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4255—Moulded or casted packages
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
- G02B6/4427—Pressure resistant cables, e.g. undersea cables
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/069—Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/93—Interconnections
- H10F77/933—Interconnections for devices having potential barriers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
本申请提供了一种光电组件的端盖、光电组件及端盖的制造方法，可以通过模具将熔体材料填充在端盖体的第一腔体与模具的阻隔件之间的缝隙、端盖嘴的过孔与该阻隔件之间的缝隙、以及端盖嘴与模具壳体之间的缝隙中，以得到注塑层，通过该注塑层可以在端盖的外侧形成密封层，并填充端盖内部的空隙，提高端盖的密封性，有效阻隔海水进入。使用上述带有注塑层的端盖制成的光电组件，可以有效阻隔海水，保证内部光电器件的安全使用。
The present application provides an end cap of an optoelectronic component, an optoelectronic component, and a method for manufacturing the end cap, which can fill the gap between the first cavity of the end cap body and the blocking member of the die, and the end cap through the mold. The gap between the via hole of the nozzle and the blocking member, and the gap between the end cap mouth and the mold shell, to obtain an injection molding layer, through which a sealing layer can be formed on the outer side of the end cap and fill the end cap The internal gap improves the sealing performance of the end cap and effectively blocks the entry of seawater. The optoelectronic components made of the above-mentioned end caps with injection molding layers can effectively block seawater and ensure the safe use of the internal optoelectronic devices.
Description
Technical Field
The application relates to the technical field of submarine communication, in particular to an end cover of a photoelectric assembly, the photoelectric assembly and a manufacturing method of the end cover.
Background
Submarine cables (undersea cables) are cables laid on the seabed, and optical fibers are wrapped in the undersea cables for transmitting optical signals on the seabed. Due to the long subsea communication distances and the general requirement that the same signal be transmitted in multiple directions to form a communication network, it is necessary to provide some opto-electronic devices in the submarine cable to perform the above-mentioned functions. For example, a Repeater (RPT) is disposed in the submarine cable to amplify the optical power of the optical signal and ensure that the optical signal completes long-distance transmission; branching Units (BU) are provided in a submarine cable to separate one main transmission path into a plurality of branch transmission paths, to transmit optical signals on the main transmission path to the plurality of branch transmission paths, to realize transmission of the same optical signal to a plurality of different directions, and the like.
In order to ensure the normal use of the above-mentioned photoelectric devices, the photoelectric devices need to be sealed to form a photoelectric assembly having an insulating and waterproof function. Taking the optoelectronic assembly shown in fig. 1 as an example, generally, the optoelectronic assembly includes a first end cap 10, a second end cap 20, a hollow main body 30 and an optoelectronic device 40, wherein the first end cap 10 and the second end cap 20 are respectively disposed at two ends of the hollow main body 30 to form a housing structure, the optoelectronic device 40 is packaged in the housing structure, the first end cap 10 and the second end cap 20 are both provided with a through hole 50, and a submarine cable 60 can enter the housing structure through the through hole 50 to be electrically connected to the optoelectronic device 40. As can be seen from the above structure, the via hole 50 is most likely to be penetrated by seawater compared to other members, and therefore, the via hole 50 needs to be sealed.
To achieve the sealing of the vias 50, an optoelectronic package as shown in fig. 2 may be used, i.e., an injection molded layer 70 is integrally wrapped on the exterior of the structure shown in fig. 1 to seal the structure shown in fig. 1. However, since the structure shown in fig. 1 is bulky, it is difficult to control the quality of the injection molded layer 70, and the sealing property is still poor. In order to improve the quality of the injection molded layer 70, the optoelectronic component shown in fig. 3 may be used, that is, the injection molded layer 70 is wrapped at a partial position of the structure shown in fig. 1, for example, the injection molded layer 70 is wrapped only at the outer sides of the first end cap 10 and the second end cap 20. However, due to the limitation of the shape structures of the first end cap 10 and the second end cap 20, the injection layer 70 has a poor bonding force with the two, and is easily peeled off, resulting in loss of the sealing effect.
Disclosure of Invention
The application provides an end cover of a photoelectric assembly, the photoelectric assembly and a manufacturing method of the end cover, so that the sealing performance of an end cover through hole is improved.
In a first aspect, the present application provides an end cap for an optoelectronic assembly, the end cap comprising: the end cover comprises an end cover body, an injection molding layer and at least one end cover nozzle;
a through hole is formed in the end cover mouth, a first cavity is formed in the end cover body, the central axis of the through hole is parallel to the central axis of the first cavity, and the end face of the end cover mouth is connected with the end face of the end cover body, so that a submarine cable passes through the through hole and the first cavity;
the injection molding layer comprises a first injection molding body and a second injection molding body;
the first injection molding body comprises a first inclusion and a second inclusion, the first inclusion and the second inclusion are of an integral structure, the first inclusion wraps the outer side of the end cover nozzle and is attached to the outer side of the end cover nozzle, and the second inclusion wraps the outer side of the submarine cable and is attached to the outer side of the submarine cable;
the second injection molding body is arranged in the via hole and the first cavity and is of a hollow structure, wherein the inner wall of the second injection molding body is attached to the submarine cable, and the outer wall of the second injection molding body is attached to the inner wall of the via hole and the inner wall of the first cavity.
Therefore, a sealing layer can be formed on the outer side of the end cover through the injection molding layer, and the gap inside the end cover is filled, so that the sealing performance of the end cover is improved, and seawater can be effectively prevented from entering the end cover.
In one implementation, the radial dimension of the second enclosure decreases in a direction away from the end cap mouth.
In this way, size transition between the first inclusion and the submarine cable can be realized through the second inclusion, so that the shear stress generated to the submarine cable in the use process due to size mutation from the second inclusion to the submarine cable is reduced.
In one implementation, the first injection molded body and the second injection molded body are of an integrally molded structure.
Like this, seamless joint between first injection molding body and the second injection molding body can effectively avoid having the position that can keep in the sea water in the layer of moulding plastics, and then effectively guarantee the leakproofness of end cover.
In one implementation, the first injection molded body and the second injection molded body are two separate structures.
Like this, can install and remove first injection molding and second injection molding more in a flexible way in the end cover, simultaneously, because first injection molding and second injection molding are two independent structures, consequently, when installing the injection molding in proper order, can be according to the installation order, inspect the quality of the injection molding that finishes at present to guarantee the leakproofness of end cover.
In one implementation, a sawtooth structure is arranged on the outer wall of the end cover nozzle, the first wrapping body wraps the sawtooth structure, and the first wrapping body is attached to the protrusions and the grooves in the sawtooth structure.
In this way, the surface area of the outer wall of the end cover nozzle can be extended by the saw-tooth structures through the protrusions and the grooves, and once seawater permeates between the end cover nozzle and the first wrapping body, the permeation path of the seawater can be extended to slow down the permeation speed of the seawater. The matching action of the protrusion and the groove can enable seawater to be stored in the groove to prevent the seawater from continuously permeating. Simultaneously, the bonding force of first inclusion and end cover mouth can be improved to the sawtooth structure, and then improves the leakproofness of end cover.
In one implementation, the injection molded layer is made of polyethylene.
Therefore, the injection molding layer has good corrosion resistance and insulation performance and low cost, the sealing performance of the end cover can be effectively ensured, and the cost of the end cover is reduced.
In a second aspect, the present application provides an optoelectronic assembly comprising: a body, an optoelectronic device and two end caps as described in the first aspect;
the main body is of a hollow structure, the two end covers are respectively arranged at two ends of the main body to form a shell structure, and the photoelectric device is arranged in the shell structure.
Therefore, the sealing performance of the photoelectric assembly can be effectively improved through the high sealing performance of the end cover.
In a third aspect, the present application provides a method for manufacturing an end cover, which is applied to an end cover main body, where the end cover main body includes an end cover body and at least one end cover nozzle, a via hole is provided in the end cover nozzle, a first cavity is provided in the end cover body, a central axis of the via hole is parallel to a central axis of the first cavity, and an end surface of the end cover nozzle is connected to an end surface of the end cover body, so that a submarine cable passes through the via hole and the first cavity, where the method includes:
fixing a mold on the end cover body to perform injection molding treatment on each end cover mouth of the at least one end cover mouth, wherein the mold comprises a mold shell and a blocking piece, a target end cover mouth is positioned in the shell, the blocking piece is arranged in the through hole and the first cavity to replace the submarine cable, the blocking piece and the submarine cable have the same shape and size, and the target end cover mouth is any one of the at least one end cover mouth which is not subjected to injection molding treatment;
pouring a melt material into the housing so that the melt material is sequentially filled in a gap between the first cavity and the barrier, a gap between the via hole and the barrier, and a gap between the target end cap nozzle and the mold housing;
cooling the melt material and disassembling the mold to obtain an injection molding layer, wherein the injection molding layer comprises a first injection molding body and a second injection molding body;
the first injection molding body comprises a first inclusion and a second inclusion, the first inclusion and the second inclusion are of an integral structure, wherein the first inclusion wraps the outer side of the target end cover nozzle and is attached to the outer side of the target end cover nozzle, and the second inclusion wraps the outer side of the barrier and is attached to the outer side of the barrier;
the second injection molding body is internally provided with the via hole and the first cavity and is of a hollow structure, wherein the inner wall of the second injection molding body is attached to the barrier piece, and the outer wall of the second injection molding body is attached to the inner wall of the via hole and the inner wall of the first cavity.
By the method, the first injection molding body with sealing performance can be formed on the outer side of the end cover, meanwhile, the second injection molding body is fully filled in the gap inside the end cover, and the injection molding layer structure formed by the first injection molding body and the second injection molding body can effectively improve the sealing performance of the end cover and prevent seawater from entering the end cover.
In one implementation, before the fixing the mold on the end cap body, the method further includes:
manufacturing a sawtooth structure on the outer wall of the target end cover mouth, wherein the sawtooth structure comprises bulges and grooves which are arranged at intervals;
the pouring of the melt material into the housing such that the melt material fills the gap between the target end cap nozzle and the mold housing may include:
pouring a melt material into the housing such that the melt material fills each of the channels.
In this way, the surface area of the outer wall of the end cover nozzle can be prolonged through the protrusions and the grooves of the sawtooth structures, and once seawater permeates between the end cover nozzle and the first wrapping body, the permeation path of the seawater can be prolonged, so that the permeation speed of the seawater is reduced. The matching action of the protrusion and the groove can enable seawater to be stored in the groove to prevent the seawater from continuously permeating. Simultaneously, the bonding force of first inclusion and end cover mouth can be improved to the sawtooth structure, and then improves the leakproofness of end cover.
In one implementation, the pouring the melt material into the housing includes: the first pouring is pouring towards a gap between the first cavity and the barrier and a gap between the via hole and the barrier, and the second pouring is pouring towards a gap between the target end cover nozzle and the mold shell, wherein the second pouring is performed after the first pouring and the second injection molding body are formed.
Like this, can be according to the watering order, the quality of the injection molding body that the present watering finishes and has solidified the shaping at any time to guarantee the quality of moulding plastics, and then guarantee the leakproofness of end cover.
The application provides an end cover of photoelectric component, photoelectric component and manufacturing method of end cover can fill the fuse-element material in the gap between the first cavity of end cover body and the separation piece of mould, the gap between the via hole of end cover mouth and this separation piece, and the gap between end cover mouth and the mould casing through the mould, in order to obtain the layer of moulding plastics, can form the sealing layer in the outside of end cover through this layer of moulding plastics, and fill the inside space of end cover, improve the leakproofness of end cover, the effective separation sea water gets into. The photoelectric assembly manufactured by using the end cover with the injection molding layer can effectively block seawater and ensure the safe use of the internal photoelectric device.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
FIG. 1 is a schematic diagram of an optoelectronic device;
FIG. 2 is a schematic diagram of a first encapsulated photovoltaic module;
FIG. 3 is a schematic structural diagram of a second encapsulated optoelectronic device;
FIG. 4 is a schematic structural diagram of an end cap to be injection molded according to an embodiment of the present disclosure;
fig. 5 is a schematic flow chart of a method for manufacturing an end cap according to an embodiment of the present disclosure;
FIG. 6 is a schematic view of a mold and an end cap according to an embodiment of the present disclosure;
FIG. 7 is a schematic structural diagram of an injection molded end cap according to an embodiment of the present disclosure;
FIG. 8 is a schematic structural diagram of an injection molded layer according to an embodiment of the present disclosure;
FIG. 9 is a schematic structural diagram of an end cap with a second inclusion having a transition structure according to an embodiment of the present disclosure;
FIG. 10 is a schematic structural view of an end cap with a serrated end cap mouth according to an embodiment of the present application;
FIG. 11 is a schematic cross-sectional view of an end closure with two end closure spouts according to an embodiment of the present disclosure;
FIG. 12 is a schematic side view of an end closure with two end closure spouts according to an embodiment of the present disclosure;
FIG. 13 is a schematic cross-sectional view of an end closure with four end closure spouts according to an embodiment of the present disclosure;
FIG. 14 is a schematic cross-sectional view of an end closure with four end closure spouts according to an embodiment of the present disclosure.
Description of the drawings
10-first end cap, 20-second end cap, 30-hollow body, 40-photoelectric device, 50-via hole, 60-submarine cable, 70-injection layer, 1-end cap body, 2-end cap mouth, 21-sawtooth structure, 3-injection layer, 31-first injection body, 311-first wrapping body, 312-second wrapping body, 32-second injection body, 4-via hole, 5-first cavity, 6-submarine cable, 7-mould, 71-mould shell, 72-barrier piece.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Generally, in order to ensure the normal use of the photovoltaic devices provided in the submarine cable, these photovoltaic devices can be placed in a sealed device to form a photovoltaic assembly, so as to avoid the contact of the photovoltaic devices with the sea water. In the embodiment of the present application, the submarine cable may be a submarine cable with a standard model, or a submarine cable with a special customization (having a special size and shape), and the optoelectronic device may be a device with an electrical signal processing function, such as RPT, BU, and the like. The sealing device generally comprises a cylinder structure and end covers arranged at two ends of the cylinder structure, photoelectric devices are arranged in the sealing device to obtain a photoelectric assembly, tail ends of two adjacent submarine cables can respectively enter the sealing device through via holes arranged on the two end covers and are electrically connected through the photoelectric devices, so that the photoelectric devices process electric signals transmitted between the two submarine cables. In order to ensure the tightness of the optoelectronic component, the end caps can be closed by means of a cast layer.
The end cap may include: the end cover body 1 and at least one end cover mouth 2, the structure of the enlarged end cover, which is described by taking an end cover including one end cover mouth 2 as an example, can refer to the structural schematic diagram of the end cover shown in fig. 4, in which a via hole 4 is provided in the end cover mouth 2, a first cavity 5 is provided in the end cover body 1, wherein the via hole 4 is coaxial with the first cavity 5, and the end surface of the end cover mouth 2 is connected with the end surface of the end cover body 1, so that the submarine cable 6 can simultaneously pass through the via hole 4 and the first cavity 5 along the direction of the central axis of the submarine cable 6, and cannot bend in the end cover. In order to achieve the sealing effect of the end cap, the outer dimension of the submarine cable 6 can only be matched with the inner dimension of the through hole 4 (in the embodiment of the present invention, the submarine cable 6 is a universal structure of the submarine cable, for example, the submarine cable 6 includes an inner optical fiber and a sheath wrapping the outer portion of the optical fiber, and the contact portion of the submarine cable 6 and different components has different structures, for example, the sheath includes the sheath before the submarine cable 6 enters the through hole 4, the submarine cable 6 is connected with the optical fiber connecting device in the end cap by the inner optical fiber after entering the through hole 4, in the embodiment of the present invention, various portions in the submarine cable 6 are not distinguished, and are collectively referred to as the submarine cable 6, it can be understood that the submarine cable 6 corresponds to corresponding structures according to the positions of the submarine cables), so as to avoid gaps and the like between the submarine cable and the other portions, however, in order to achieve the detachment between the submarine cable 6 and the via 4, it is difficult to achieve seamless connection therebetween. At this time, an end cap having high sealability can be prepared by preparing one injection-molded layer according to the end cap manufacturing method as shown in fig. 5:
s100, fixed mould on the end cover body, the mould includes mould casing and separation piece, wherein, the end cover mouth is located in the casing, and will separation piece set up in the via hole with in the first cavity is in order to replace the submarine cable, separation piece with the shape and the size of submarine cable are the same.
The injection molding layer can be prepared by means of pouring, the matching schematic diagram of the mold and the end cover shown in fig. 6 is shown, and as shown in fig. 6, the mold comprises a mold shell 71 and a barrier 72, wherein the mold shell 71 is of a split structure, exemplarily, the split structure comprises a first split part and a second split part which are symmetrically arranged, one sides of the first split part and the second split part, which are opposite, are respectively provided with a groove, the side of the first split part with the groove is spliced with the side of the second split part with the groove, so that a complete mold shell 71 can be obtained, meanwhile, the two grooves are spliced together to form a complete cavity, and the shape of the cavity is consistent with the design of a designer on the injection molding layer. The mold shell 71 with the split structure is convenient to position during installation and also convenient to detach after injection molding.
For the convenience of casting, the side of the end cap body 1 without the end cap mouth 2 is first placed on a platform (e.g. a flat work table, a horizontal floor, etc.) to improve the quality of the injection molded layer, with the end cap mouth 2 facing upwards. Fix the mould casing 71 on the end cover body 1 to make the end cover mouth 2 be located the cavity of mould casing 71, specifically, can adopt modes such as spot welding, screw connection to be fixed in mould casing 71 on the end cover body 1, in order to avoid mould casing 71 to take place the position and remove at the in-process of pouring, and then guarantee the shaping quality of layer of moulding plastics. It should be noted that before the mold housing 71 is fixed, the position of the mold housing 71 needs to be adjusted to make the end cap nozzle 2 coaxial with the cavity of the mold housing 71, so that the thickness of the injection layer around the end cap nozzle 2 can be ensured to be uniform, and the problem that the injection layer is too thin and is easily damaged is avoided.
In order to avoid that the sea cable 6 is damaged by the high temperature melt material, the sea cable 6 will not be assembled in the end cap when pouring, therefore, if the melt material is directly poured at this time, the injection molded layer after molding will not be adapted to the sea cable 6, and in order to solve the above problem, it is necessary to provide the blocking member 72 in the mold housing 71 to replace the sea cable 6 during pouring. In order to be able to replace the sea cable 6 completely with the barrier 72, it is necessary to ensure that the profile and dimensions of the barrier 72 are consistent with the dimensions of the sea cable 6 throughout the end cap.
The mold shell 71 and the barrier piece 72 can both be made of titanium alloy materials, and the mold made of the titanium alloy materials has the advantages of fatigue resistance, high specific strength, corrosion resistance, high temperature resistance, stable chemical properties and the like, and can provide a foundation for obtaining a high-quality injection molding layer.
The mold shell 71 is provided with a pouring port (not shown in the figure), the position of the pouring port cannot damage the original structure of the end cover, and meanwhile, the position of the pouring port needs to ensure the smooth and efficient pouring process, for example, continuous pouring can be ensured, the specified position can be completely filled, excessive bubbles, impurities and the like can be prevented from entering along with the pouring process, the pouring efficiency can be ensured, and the like.
S200, pouring a melt material into the shell, so that the melt material is sequentially filled in the gap between the first cavity and the blocking piece, the gap between the via hole and the blocking piece, and the gap between the end cover nozzle and the mold shell.
After the mold is fixed, several portions to be poured and filled are formed, namely, a gap between the first cavity 5 and the blocking member 72, a gap between the via hole 2 and the blocking member 72, and a gap between the end cap nozzle 2 and the mold shell 71 in the end cap body 1. The molten material can now be poured to form a solidified molten material in the gap, i.e. an injection-molded layer. In this embodiment, the material of the melt is Polyethylene (PE). The chemical stability of the PE material is good, so that the injection molding layer made of the PE material is stable in performance, the corrosion resistance of the PE material is high, the PE material can adapt to the seabed corrosion environment, meanwhile, the plasticity of the PE material is high, the PE material is suitable for being used as a melt material to obtain a product through injection molding, the PE material has good insulativity, the insulation requirement of the interior of an end cover on the joint of the submarine cable 6 can be met, in addition, the cost of the PE material is low, and the PE material is suitable for batch production. In some embodiments, other melt materials, such as Polypropylene (PP) materials, High Density Polyethylene (HDPE) materials, etc., not listed herein, may be used to meet the actual requirements.
The casting process of the melt material can be formed in various ways according to needs, in one implementation mode, one-step casting molding can be adopted, namely the melt material is continuously cast into the gaps, the temperature of the melt material is reduced after all the gaps are filled, so that the melt material is solidified to form an injection molding layer, and the obtained injection molding layer is of an integrally molded structure. The one-time casting molding mode can obtain a continuous injection molding layer, namely, no gap can be generated in the injection molding layer, and meanwhile, the melt material only needs the processes of one-time heating and one-time cooling, so that the efficiency of the whole casting process is higher.
In another implementation, multiple casting may be performed, for example, two casting processes are taken, that is, the casting process includes a first casting and a second casting, each casting process requires to cast the melt material to a specific position, for example, the first casting is performed to cast the melt material to a specific position in a direction toward a gap between the first cavity 5 and the blocking member 72 and a gap between the via hole 4 and the blocking member 72, and the second casting is performed to cast the melt material to a specific position in a direction toward a gap between the end cap nozzle 2 and the mold housing 71, wherein after the first casting is completed, the temperature of the melt material needs to be reduced to form a corresponding injection layer, and then the second casting is performed, where the obtained injection layer is a plurality of independent structures, and each independent structure corresponds to one casting process. Because the structure of the injection molding layer is special-shaped, if the injection molding layer obtained by one-time casting molding is adopted, the quality of the injection molding layer in the gap between the first cavity 5 and the barrier piece 72 and the gap between the via hole 4 and the barrier piece 72 can not be detected easily, and therefore, the quality of the injection molding layer can not be ensured easily. By adopting multiple casting molding, the molding quality of the injection molding layer can be correspondingly detected after each pouring, and the quality of each part of the injection molding layer can be further ensured.
From the above injection molding process, in the injection molding process, the temperature of the melt material needs to be controlled according to actual needs, for example, the temperature is raised to ensure the fluidity of the melt material, and the temperature is lowered to solidify and mold the melt material. At this time, a heater and a cooler (not shown in the figure) may be additionally arranged in the mold housing 71, the heater and the cooler are connected with a controller, and the controller controls the heater and the cooler to be turned off and on according to a program so as to realize different heating temperatures and cooling temperatures.
S300, cooling the melt material and disassembling the mold to obtain an injection molding layer, wherein the injection molding layer comprises a first injection molding body and a second injection molding body.
And after the melt material is cooled and solidified, removing the mold to obtain the injection molding layer. It should be noted that, no matter whether one-time injection molding or multiple-time injection molding is adopted, the mold can be disassembled after all melt materials are cooled and solidified, so that the mold is prevented from being disassembled in the solidification process and the solidified injection molding layer is damaged, or in the multiple-time injection molding process, due to repeated disassembly and assembly of the mold, the injection molding layers correspondingly formed in different pouring processes are staggered, gaps exist between the injection molding layers and other parts, and the sealing effect of the injection molding layers is time-efficient.
After injection molding, the structural schematic diagram of the end cap shown in fig. 7 is obtained, and it can be seen that the injection molded layer 3 is filled in the gap between the first cavity 5 and the blocking member 72, the gap between the via hole 2 and the blocking member 72, and the gap between the end cap mouth 2 and the mold housing 71 in the end cap body 1. The specific structure of the injection molding layer 3 can be seen in fig. 8, and as shown in fig. 8, the injection molding layer 3 includes a first injection molding body 31 and a second injection molding body 32, where the first injection molding body 31 is the injection molding layer 3 filled in the gap between the end cover nozzle 2 and the mold housing 71, and the second injection molding body 32 is the injection molding layer 3 filled in the gap between the first cavity 5 and the blocking piece 72, and the gap between the via hole 2 and the blocking piece 72 in the end cover body 1.
As shown by the dotted line in fig. 8, the first injection molded body 31 is divided by the dotted line to obtain the first enclosure 311 and the second enclosure 312, and it should be noted that the division is only for convenience of describing the structure of the first injection molded body 31 and is not a physical division, and therefore, the first enclosure 311 and the second enclosure 312 are still of an integral structure. First inclusion 311 is located the gap between end cover mouth 2 and the mould casing 71, and first inclusion 311 wraps up in the outside of end cover mouth 2, laminates mutually with the outside of end cover mouth 2, through this kind of laminated structure, can prevent effectively that there is the gap between first inclusion 311 and the end cover mouth 2, and then plays sealed effect here. The inside of second inclusion 312 is laminated with barrier 72, because barrier 72 replaces submarine cable 6 in the casting process, consequently, second inclusion 312 can be laminated with submarine cable 6's the outside, like this, will not have the gap between second inclusion 312 and the submarine cable 6 to the separation sea water is from this entering, in order to improve the leakproofness.
The second injection molding body 32 is of a hollow structure, the inner wall of the second injection molding body 32 is attached to the blocking piece 72, and the blocking piece 72 replaces the submarine cable 6 in the pouring process, so that the inner wall of the second injection molding body 32 can be attached to the outer side of the submarine cable 6, and therefore a gap cannot exist between the second injection molding body 32 and the submarine cable 6, and therefore seawater is blocked from entering the gap, and the sealing performance is improved. The outer wall of second injection molding body 32 laminates with the inner wall of via hole 4 and the inner wall of first cavity 5 respectively to fill via hole 4 and first cavity 5 completely, with the space that effectively fills the sea water and can get into, and then effectively isolated sea water plays good sealed effect. Meanwhile, the injection molding layer 3 is made of an insulating material, so that the contact between the submarine cable 6 and the end cover can be effectively isolated, and the insulating effect is effectively improved.
As can be seen from the end cover structure shown in fig. 7, the cross-sectional dimension of the second inclusion 312 adjacent to the submarine cable 6 is larger than that of the submarine cable 6, so that a size fault exists between the second inclusion 312 and the submarine cable 6, a large shear stress is easily generated at the position, and in application, the position is easily broken under the action of the shear stress due to the scouring of seawater and the like. In order to improve the reliability of the connection of the end cap and the submarine cable 6, a structure as shown in fig. 9 may be adopted, that is, the second enclosure 312 may be designed to be a transition structure, that is, the radial dimension of the second enclosure 312 is gradually reduced in a direction away from the mouth 2 of the end cap, so as to eliminate the dimension fault between the second enclosure 312 and the submarine cable 6. Accordingly, in order to obtain the second casing 312 having the above-described structure, it is necessary to design the groove inside the mold case 71 to have a corresponding transition structure.
The injection layer 3 may be used for a long time or may be damaged by the injection process, and a gap may be formed between the injection layer and the end cap mouth 2, or even be separated from the end cap mouth. In order to improve the reliability and sealing performance of the injection layer 3 in the above situation, a structure as shown in fig. 10 may be adopted, that is, a sawtooth structure 21 is provided on the outer wall of the end cap mouth 2, and the sawtooth structure 21 has protrusions and grooves at intervals. When pouring, need ensure fuse-element material and each arch and the slot laminating, like this, the first inclusion 311 after solidifying can fully laminate with sawtooth structure 21, through the effort between first inclusion 311 and the slot, can effectively improve the cohesion between first inclusion 311 and the end cover mouth 2, prevents that first inclusion 311 from droing from end cover mouth 2. Meanwhile, once a gap exists between the first inclusion 311 and the end cover nozzle 2, and seawater permeates through the gap, the flowing path of the seawater needs to pass through each protrusion and each groove, and obviously, the flowing distance of the seawater in the sawtooth structure 21 is far longer than that of the seawater on the end cover nozzle 2 shown in fig. 7, so that the time for the seawater to enter the end cover can be effectively prolonged. When the water inflow is less, the seawater can be gradually dried in the flowing process so as to successfully prevent the seawater from permeating and improve the sealing property of the end cover.
Therefore, the end cover prepared by the process can effectively fill gaps and prevent seawater from entering under the matching of the submarine cables 6, so that the sealing property is effectively improved. By using the end caps to manufacture the optoelectronic component, for example, the first end cap 10 and the second end cap 20 in fig. 1 are replaced by the end caps, so that the sealing performance of the optoelectronic component can be effectively improved.
In some embodiments, the end closure may further comprise a plurality of end closure mouths 2, for example, the end closure with two end closure mouths 2 shown in fig. 11 and 12; the end cap with four end cap mouths 2 shown in fig. 13 and 14, wherein each end cap mouth 2 is prepared by the method described above, and in the injection molding process, simultaneous or sequential injection molding is performed with each end cap mouth as a target end cap mouth, and the end cap mouths and injection molded body structures identical to the end cap mouths disclosed above are obtained, and are not described again here. At this moment, the central axis of each end cap mouth 2 is parallel to the central axis of the first cavity 5, the specific number of the end cap mouths 2 and the distribution positions can be arranged according to actual requirements, and the structures of two adjacent end cap mouths 2 are at least guaranteed not to interfere with each other.
The above embodiments are only for illustrating the embodiments of the present invention and are not to be construed as limiting the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the embodiments of the present invention shall be included in the scope of the present invention.
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110529412.4A CN114156348B (en) | 2021-05-14 | 2021-05-14 | End cover of photoelectric component, photoelectric component and manufacturing method of end cover |
| GB2206913.2A GB2608685B (en) | 2021-05-14 | 2022-05-11 | Bulkhead for optoelectronic component, optoelectronic component and method for manufacturing bulkhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110529412.4A CN114156348B (en) | 2021-05-14 | 2021-05-14 | End cover of photoelectric component, photoelectric component and manufacturing method of end cover |
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| Publication Number | Publication Date |
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| CN114156348A true CN114156348A (en) | 2022-03-08 |
| CN114156348B CN114156348B (en) | 2024-08-27 |
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| CN202110529412.4A Active CN114156348B (en) | 2021-05-14 | 2021-05-14 | End cover of photoelectric component, photoelectric component and manufacturing method of end cover |
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| GB (1) | GB2608685B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| GB2608685A (en) | 2023-01-11 |
| CN114156348B (en) | 2024-08-27 |
| GB2608685B (en) | 2024-11-27 |
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