CN211165050U - Sea optical cable mould exhaust choke plug - Google Patents

Abstract

The utility model relates to a submarine optical cable mould exhaust bulkhead, a serial communication port, including body and hexagon socket head cap screw, be equipped with the exhaust duct along the axial of body. The pressurization procedure of extra large optical cable splice box need be controlled the residual volume of gas in the mould, uses the utility model discloses can not harm the mould, the effect is directly perceived, and is easy and simple to handle high-efficient. The utility model has the advantages that: the copper alloy that the whole mould main part material of using and submarine optical cable splice box is the same, convenient assembling is difficult for hindering the mould main part, and the whole simple and easy controllable of exhaust duct switch of mould closes the back and seals effectively and can not leak and reduce mould internal pressure, convenient operation, and the structure is reliable, and is not fragile, can reach the life the same with the mould, and processing cost is lower.

Description

Sea optical cable mould exhaust choke plug

Technical Field

The utility model relates to a submarine optical cable splice box mould exhaust choke plug belongs to submarine optical cable and continues technical field.

Background

In the process of pressure injection molding of the marine optical cable junction box, before an injection molding area in a junction box mold is filled with high-purity polyethylene, the opening state of an exhaust hole is kept, gas in the mold is extruded out of the mold by the injected polyethylene from a channel, residual gas deposited between an insulating layer and a sandwich layer of the marine optical cable junction box is reduced, an outlet of the exhaust hole needs to be closed in time after the extruded polyethylene is observed, and a reliable sealing effect needs to be obtained for an exhaust channel so as to maintain the highest pressure of 8 MPa in the mold. The material of the splicing box mould body is copper alloy in order to keep excellent heat conductivity, and the exhaust port is easy to damage in the opening and closing process, so that the sealing effect is reduced. When the common choke plug needs to be closed in the pressurizing injection molding process, the polyethylene contacts the mounting thread, the closing is difficult, and the polyethylene remained in the thread gap is cooled and bonded when the injection molding process is finished, so that the demolding is difficult, the mold is easy to deform and needs to be disassembled for leveling. All of these conditions reduce the equipment utilization rate, and in severe cases, the molds need to be returned to the factory for refurbishment with enormous cost (10 ten thousand RMB coins at a time).

Disclosure of Invention

The utility model aims at: the air in the mould is effectively discharged, the closing operation is simple, convenient and reliable, the pressure in the mould can be effectively maintained, and the mould of the submarine optical cable splice closure is not damaged.

In order to achieve the above object, the technical scheme of the utility model provides a submarine optical cable mould exhaust bulkhead is provided, a serial communication port, including body and hexagon socket head cap screw, be equipped with the exhaust duct along the axial of body, wherein:

the body comprises a sealing section, an external thread section, a transition section and an exhaust switch section which are arranged from bottom to top, wherein the top end of the sealing section is provided with a sealing contact surface which is used for contacting with a corresponding surface of a mold, the sealing contact surface of the sealing section is in sealing fit after contacting with the corresponding surface of the mold, and the tail end of the sealing section is contacted with the external thread section; the outer circumferential surface of the external thread section is provided with external threads, and the exhaust choke plug is arranged on the sea cable mould through the external threads; the tail end of the exhaust switch section is provided with an internal threaded hole which is communicated with the exhaust duct; the tail end of the exhaust switch section is provided with a bypass exhaust hole along the radial direction, two sides of the internal threaded hole are respectively provided with a bypass exhaust hole, and the bypass exhaust holes are communicated with the internal threaded hole;

the stud part of the inner hexagon bolt is arranged in the inner threaded hole at the tail end of the body, and the height of the stud part is greater than the depth of the inner threaded hole.

Preferably, the corresponding surface of the mold is a first oblique conical surface, and the sealing contact surface is a second oblique conical surface matched with the first oblique conical surface.

Preferably, the diameter of the sealing section is smaller than the diameter of the external threaded section, which is smaller than the maximum diameter of the exhaust switch section.

Preferably, a reduced diameter section is formed at the end of the exhaust switch section, and the outer circumferential surface of the reduced diameter section is a parallel surface for facilitating the operation of the wrench.

Preferably, the exhaust duct is a cross-shaped exhaust duct.

The pressurization injection molding procedure of the submarine optical cable splice box needs to control the residual amount of gas in the mold, the use is novel, the mold can not be damaged, the effect is visual, and the operation is simple, convenient and efficient. The utility model has the advantages that: the copper alloy that the whole mould main part material of using and submarine optical cable splice box is the same, convenient assembling is difficult for hindering the mould main part, and the whole simple and easy controllable of exhaust duct switch of mould closes the back and seals effectively and can not leak and reduce mould internal pressure, convenient operation, and the structure is reliable, and is not fragile, can reach the life the same with the mould, and processing cost is lower.

Drawings

Fig. 1 is the utility model provides a pair of marine optical cable mould exhaust bulkhead's elevation view, in the picture:

H1-60mm、H2-30mm、H3-11mm、H4-2mm、H5-8mm、H6-25mm、 A-M10×1.5mm、W1-12mm、∝-40°；

fig. 2 is the utility model provides a pair of marine optical cable mould exhaust bulkhead's side view, in the picture:

H7-20mm、H8-18mm、H9-25mm、φ1-5mm、φ2-20mm、B-M14×2mm、C- M10×1.5mm；

fig. 3 is the utility model provides a pair of marine optical cable mould exhaust bulkhead's top view, in the picture:

W2-16mm、φ3-7mm、φ4-20mm；

fig. 4 is a sectional view taken along line a-a in fig. 2, in which:

φ5-13mm。

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

Referring to fig. 1 to 4, the utility model provides a pair of marine optical cable splice box mould exhaust bulkhead, including using the height that the material processing the same with marine optical cable mould main part is 60mm, the widest department diameter is 20 mm's more complicated hollow cylinder, following called as the body in the following. The inside of the body is provided with a cross-shaped exhaust duct 1, the diameter phi 3 of the front end of the cross-shaped exhaust duct 1 is 7mm, and the cross-shaped exhaust duct 1 is connected with an exhaust duct of a submarine optical cable connecting box mould. The body comprises a sealing section 2, an external thread section 3, a transition section 4 and an exhaust switch section 5 which are arranged from bottom to top. The top end of the sealing section 2 is provided with a second inclined conical surface at an angle of ∞ 40 DEG, and the second inclined conical surface is in contact with the corresponding first inclined conical surface of the die to be used as a sealing contact surface. The outer periphery of external screw thread section 3 has M16 screw thread, and M16 screw thread is used for with the utility model provides an exhaust bulkhead closely installs on sea optical cable splice box mould. The tail end of the exhaust switch section 5 is provided with an M10 internal thread hole, and the M10 internal thread hole is communicated with the cross-shaped exhaust duct 1. The M10 female screw hole is used for mounting one M10 hexagon socket head cap screw 6 used as an exhaust switch screw. The thread length H9 of the M10 hexagon socket head cap screw 6 is 25mm, and is used for mounting the M10 hexagon socket head cap screw 6 in the M10 female thread hole at the end of the main body. The tail end of the exhaust switch section 5 is provided with a bypass exhaust hole 7 along the radial direction, two sides of the internal threaded hole are respectively provided with a bypass exhaust hole 7, and the bypass exhaust holes 7 are communicated with the internal threaded hole. The diameter phi 1 of the bypass exhaust hole 7 is 5mm and is used for bypass exhaust. The hexagon socket counter bore at the tail end of the M10 hexagon socket bolt 6 is used for installing an 8mm hexagon socket wrench to control the opening and closing of the bypass exhaust hole 7.

The end of exhaust switch section 5 is formed with the reducing section, and the outer periphery of reducing section is for the 18x12mm parallel surface of wrench operation for the convenience for the marine optical cable splice box mould is tightened the utility model provides an exhaust vexed head ensures sealed effect.

The utility model discloses concrete theory of operation is: after the marine optical cable splice box mould is installed, 4 vent holes on the back of the mould are provided with the exhaust choke plug provided by the utility model, because the material which is the same as the material of the marine optical cable mould main body is used, the thermal expansion coefficient is the same, the hardness is the same, the mould can not be hurt during the operation, a 16mm open spanner is clamped on the 18x12mm parallel surface of the tail end outer wall to screw the exhaust choke plug, the oblique conical surface two at the top end of the choke plug contacts with the oblique conical surface one in the exhaust hole of the mould to obtain the reliable sealing effect and prevent the polyethylene from leaking and contacting the demoulding operation after the pressurized injection moulding procedure is completed, then the M10 hexagon socket head bolt 6 is screwed into the exhaust choke plug for 5-6 circles to form the T-shaped exhaust channel in the exhaust choke plug for the exhaust in the injection moulding procedure, the 8mm hexagon socket head spanner is used for screwing the M10 hexagon socket head bolt 6 and closing the exhaust hole 7 after the polyethylene extruded in the mould is fully filled with the polyethylene and visually, and forming high pressure in the mold to complete the subsequent pressurizing injection molding process.

The utility model has the characteristics that the mould gas vent can be convenient carry out rapid on-off control through installing at terminal hexagon socket head cap screw, easy and simple to handle, exhaust effect is good, observes directly perceived, and is sealed effectual, installs the exhaust vexed head on the mould and does not influence the drawing of patterns operation, and processing requires generally and with low costs.

Claims (5)

1. The utility model provides a submarine optical cable mould exhaust bulkhead which characterized in that, includes body and hexagon socket head cap screw, is equipped with the venthole along the axial of body, wherein:

the body comprises a sealing section, an external thread section, a transition section and an exhaust switch section which are arranged from bottom to top, wherein the top end of the sealing section is provided with a sealing contact surface which is used for contacting with a corresponding surface of a mold, the sealing contact surface of the sealing section is in sealing fit after contacting with the corresponding surface of the mold, and the tail end of the sealing section is contacted with the external thread section; the outer circumferential surface of the external thread section is provided with external threads, and the exhaust choke plug is arranged on the sea cable mould through the external threads; the tail end of the exhaust switch section is provided with an internal threaded hole which is communicated with the exhaust duct; the tail end of the exhaust switch section is provided with a bypass exhaust hole along the radial direction, two sides of the internal threaded hole are respectively provided with a bypass exhaust hole, and the bypass exhaust holes are communicated with the internal threaded hole;

the stud part of the inner hexagon bolt is arranged in the inner threaded hole at the tail end of the body, and the height of the stud part is greater than the depth of the inner threaded hole.

2. The marine optical cable mold venting bulkhead of claim 1, wherein the mold mating surface is a first beveled surface and the sealing contact surface is a second beveled surface that mates with the first beveled surface.

3. The marine optical cable mold venting bulkhead of claim 1, wherein the diameter of the sealing section is less than the diameter of the external threaded section, and the diameter of the external threaded section is less than the maximum diameter of the vent switch section.

4. The marine optical cable mold venting bulkhead of claim 1, wherein a reduced diameter section is formed at an end of the venting switch section, the reduced diameter section having an outer circumferential surface that is parallel to facilitate wrench operation.

5. The marine optical cable mold vent bulkhead of claim 1, wherein the vent is a cruciform vent.

Images