1. A mold for producing an optical fiber sleeve comprises a mold core (1) and a mold sleeve (2), and is characterized in that the mold sleeve (2) is sequentially provided with a molding hole (21) and a material guide hole (22) which are communicated from a first end face to a second end face of the mold sleeve, and the molding hole (21) and the material guide hole (22) jointly form a mold core mounting through hole for mounting the mold core (1); an interval space for material flowing is formed between the mold core (1) and the wall of the mold core mounting through hole;

the first end part of the die sleeve (2) is connected with an adjusting mechanism (3), and the adjusting mechanism (3) comprises a mounting sleeve (31) detachably connected with the first end part of the die sleeve (2) and a connecting pipe (32) extending into the forming hole (21) and abutting against the hole wall of the forming hole (21);

the connecting pipe (32) is provided with a sizing hole (33) along the axial direction in a penetrating manner, and a preset distance is reserved between the mold core (1) and the hole wall of the sizing hole (33).

2. The mold for producing an optical fiber ferrule according to claim 1, wherein the core (1) comprises a core main body (11) and an inner core tube (12) provided at a first end of the core main body (11), the core main body (11) being connected to a hole wall of the core mounting through hole; the inner core pipe (12) extends into the forming hole (21) and has a preset distance with the hole wall of the sizing hole (33);

wherein, the inner core tube (12) and the mold core main body (11) are both hollow tubes.

3. The mold for producing optical fiber ferrules according to claim 2, characterized in that the second end surface of the mold sleeve (2) is provided with an annular groove (24) surrounding the orifice of the material guiding hole (22), the annular groove (24) and the material guiding hole (22) are arranged along the same axis;

a plurality of mounting lugs (13) which are used for embedding groove walls of the annular groove (24) are arranged on the mold core main body (11) in a surrounding manner; and a feeding hole (14) communicated with the spacing space is arranged between the adjacent mounting lugs (13).

4. The mold for producing an optical fiber ferrule according to claim 3, wherein the molding hole (21) and the guiding hole (22) are circular holes coaxially arranged, and the diameter of the molding hole (21) is smaller than that of the guiding hole (22).

5. The mold for producing an optical fiber ferrule according to claim 4, wherein the mounting projections (13) are arc-shaped projections, four in number, and four arc-shaped projections are symmetrically provided on an outer side wall of the core body (11).

6. The mold for the production of optical fiber ferrules according to claim 1 characterized in that said adjusting mechanism (3) further comprises a connecting portion (34) in the shape of a ring, said connecting portion (34) abutting with a first end face of said mold sleeve (2);

the outer side wall of the connecting part (34) is connected with the inner wall of the mounting sleeve (31), and the inner edge of the connecting part (34) is connected with the outer side wall of the connecting pipe (32).

7. The mold for producing the optical fiber ferrule according to claim 1, wherein a stepped groove (23) is formed at an edge of the first end surface of the mold housing (2), the adjusting mechanism (3) is detachably connected to the stepped groove (23), a limiting hole (25) is formed in a groove wall of the stepped groove (23) along a preset first direction, and an elastic component (26) is arranged in the limiting hole (25); the preset first direction is a direction perpendicular to a central axis of the die sleeve (2);

the inner side wall of the installation sleeve (31) is provided with a clamping hole (35) which is used for being elastically clamped with the elastic component (26).

8. The mold for manufacturing an optical fiber ferrule according to claim 7, wherein the elastic member (26) includes a lift post (261) and a spring (262), a first end of the spring (262) is connected to a bottom wall of the stopper hole (25), and a second end of the spring (262) is connected to the lift post (261); one end, far away from the spring (262), of the jacking column (261) extends into the limiting hole (25).

9. The mold for producing an optical fiber ferrule according to claim 8, wherein a sliding groove (27) is formed on an outer side wall of the mold housing (2) along the predetermined first direction, the sliding groove (27) is disposed at one side of the limiting hole (25), and the sliding groove (27) is communicated with the limiting hole (25);

a connecting rod (28) is connected in the sliding groove (27) in a sliding mode, the first end of the connecting rod (28) is connected with the jacking column (261), and the second end of the connecting rod (28) is exposed out of the sliding groove (27) and is connected with a button (29).

10. The mold for producing an optical fiber ferrule according to claim 9, wherein an end surface of the lift pin (261) remote from the spring (262) is spherical.

Background

The die is various dies and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping, stretching and other methods in industrial production. In short, a mold is a tool for molding an article, which is composed of various parts, and different molds are composed of different parts, and it is accomplished by the processing of the outer shape of the article mainly by the change of the physical state of the molded material.

In current optical cable production process, need change different moulds to the optical cable of different external diameters, when changing the mould, need pull out repeatedly and insert the mold core, lead to the axiality of mold core and die sleeve skew easily, direct influence sleeve pipe quality problem and the optical property of optic fibre, increased the eccentric degree of difficulty of debugging simultaneously, cause production efficiency low, the extravagant phenomenon of raw and other materials.

In view of this, it is necessary to improve the optical fiber production mold in the prior art to solve the technical problem that the optical fiber sleeve is eccentric due to the need to replace different molds and the need to disassemble and replace the mold sleeve in the production of optical cables with different outer diameters.

Disclosure of Invention

The present invention is directed to a mold for producing an optical fiber ferrule, which solves the above technical problems.

In order to achieve the purpose, the invention adopts the following technical scheme:

a mould for producing an optical fiber sleeve comprises a mould core and a mould sleeve, wherein the mould sleeve is sequentially provided with a forming hole and a material guide hole which are communicated from a first end surface to a second end surface of the mould sleeve, and the forming hole and the material guide hole jointly form a mould core mounting through hole for mounting the mould core; an interval space for material flowing is formed between the mold core and the wall of the mold core mounting through hole;

the first end part of the die sleeve is connected with an adjusting mechanism, and the adjusting mechanism comprises an installation sleeve detachably connected with the first end part of the die sleeve and a connecting pipe which is used for extending into the forming hole and abutting against the wall of the forming hole;

the connecting pipe is provided with a sizing hole in an axial penetrating manner, and a preset distance is reserved between the mold core and the hole wall of the sizing hole.

Optionally, the mold core comprises a mold core main body and an inner core pipe arranged at the first end of the mold core main body, and the mold core main body is connected with the hole wall of the mold core mounting through hole; the inner core pipe extends into the forming hole and has a preset distance with the hole wall of the sizing hole;

the inner core pipe and the mold core main body are hollow pipes.

Optionally, an annular groove surrounding the orifice of the material guide hole is formed in the second end surface of the die sleeve, and the annular groove and the material guide hole are arranged along the same axis;

the mold core main body is provided with a plurality of mounting lugs which are used for the embedding of the groove walls of the annular groove in a surrounding manner; and a feed inlet communicated with the space is arranged between the adjacent mounting lugs.

Optionally, the forming hole and the material guiding hole are coaxially arranged circular holes, and the aperture of the forming hole is smaller than that of the material guiding hole.

Optionally, the mounting lugs are arc lugs, the number of the mounting lugs is four, and the four arc lugs are symmetrically arranged on the outer side wall of the mold core main body.

Optionally, the adjusting mechanism further comprises an annular connecting part, and the connecting part is abutted against the first end surface of the die sleeve;

the outer side wall of the connecting part is connected with the inner wall of the mounting sleeve, and the inner edge of the connecting part is connected with the outer side wall of the connecting pipe.

Optionally, a stepped groove is formed in the edge of the first end face of the die sleeve, the adjusting mechanism is detachably connected to the stepped groove, a limiting hole is formed in the groove wall of the stepped groove along a preset first direction, and an elastic assembly is arranged in the limiting hole; the preset first direction is a direction perpendicular to the central axis of the die sleeve;

the inner side wall of the installation sleeve is provided with a clamping hole used for being elastically clamped with the elastic component.

Optionally, the elastic assembly includes a jacking column and a spring, a first end of the spring is connected to the bottom wall of the limiting hole, and a second end of the spring is connected to the jacking column; one end of the jacking column, which is far away from the spring, extends into the limiting hole.

Optionally, a sliding groove is formed in the outer side wall of the die sleeve along the preset first direction, the sliding groove is arranged on one side of the limiting hole, and the sliding groove is communicated with the limiting hole;

the sliding connection has the connecting rod in the spout, the first end of connecting rod with the jacking post is connected, the second end of connecting rod expose in the spout is connected with the button.

Optionally, an end surface of the lifting column away from the spring is a spherical surface.

Compared with the prior art, the invention has the following beneficial effects: when the die is in work, the die core is sleeved in the film sleeve, one end of the die core extends into the forming hole, the adjusting mechanism is connected with the film sleeve, one end of the connecting pipe extends into the forming hole, the outer side wall of the connecting pipe is abutted against the inner wall of the forming hole, and the sizing hole is communicated with the spacing space; at the moment, the effective forming diameter in the die sleeve is the diameter of the sizing hole, so that the change of the outer diameter of the optical fiber sleeve is realized; the die sleeve does not need to be detached for replacement; the change of the forming outer diameter of the optical fiber sleeve can be realized only by installing the adjusting mechanism on the die sleeve, the die core and the die sleeve always keep good coaxiality, and the optical fiber sleeve cannot be eccentric, so that the quality of a product is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the invention, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the scope of the technical content disclosed by the invention without affecting the effect and the achievable purpose of the invention.

Fig. 1 is a schematic view of the overall structure of a mold for producing an optical fiber ferrule.

Fig. 2 is a schematic exploded view of a mold for producing an optical fiber ferrule.

FIG. 3 is a schematic cross-sectional view of the adjustment mechanism of the mold for producing an optical fiber ferrule prior to insertion.

FIG. 4 is a schematic cross-sectional view of a mold for producing an optical fiber ferrule after insertion of an adjustment mechanism.

Fig. 5 is a schematic sectional view showing a structure of a mold shell of a mold for producing an optical fiber ferrule.

Fig. 6 is a schematic view of a structure of a mold shell and a mold core of a mold for producing an optical fiber ferrule.

Illustration of the drawings: the die core comprises a die core 1, a die sleeve 2, a forming hole 21, a material guide hole 22, a stepped groove 23, an adjusting mechanism 3, a mounting sleeve 31, a connecting pipe 32, a sizing hole 33, a die core main body 11, an inner core pipe 12, an annular groove 24, a mounting lug 13, a feed inlet 14, a connecting part 34, a limiting hole 25, an elastic component 26, a clamping hole 35, a jacking column 261, a spring 262, a sliding groove 27, a connecting rod 28 and a button 29.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below 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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

The embodiment of the invention provides a die for producing an optical fiber sleeve, which comprises a die core 1 and a die sleeve 2, wherein the die sleeve 2 is sequentially provided with a forming hole 21 and a material guide hole 22 which are communicated from a first end surface to a second end surface, and the forming hole 21 and the material guide hole 22 together form a die core mounting through hole for mounting the die core 1; an interval space for material flowing is formed between the mold core 1 and the wall of the mold core mounting through hole; the forming holes 21 and the material guide holes 22 are arranged along the same axis;

the first end part of the die sleeve 2 is connected with an adjusting mechanism 3, and the adjusting mechanism 3 comprises a mounting sleeve 31 detachably connected with the first end part of the die sleeve 2 and a connecting pipe 32 extending into the forming hole 21 and abutting against the hole wall of the forming hole 21;

the connecting pipe 32 is provided with a sizing hole 33 along the axial direction thereof, the sizing hole 33 and the forming hole 21 are arranged along the same axis, and a preset distance is reserved between the mold core 1 and the hole wall of the sizing hole 33.

The working principle of the invention is as follows: during operation, will mold core 1 cup joints in the membrane cover, make mold core 1's one end stretch into in the shaping hole 21, right inject the material of moulding plastics in the interval space, the material of moulding plastics flows along the interval space and injection moulding optical fiber sleeve pipe in the shaping hole 21.

When the outer diameter of the optical fiber sleeve needs to be changed, the adjusting mechanism 3 is connected with the die sleeve 2, one end of the connecting pipe 32 extends into the forming hole 21, the outer side wall of the connecting pipe 32 is abutted against the inner wall of the forming hole 21, and the sizing hole 33 is communicated with the spacing space; at this time, the effective molding diameter in the die sleeve 2 is the diameter of the sizing hole 33, so that the change of the outer diameter of the optical fiber sleeve is realized; compared with the optical fiber mold in the prior art, the mold for producing the optical fiber sleeve does not need to detach the mold sleeve 2 for replacement when the optical fiber sleeves with different outer diameters are produced; the change of the molding outer diameter of the optical fiber sleeve can be realized only by installing the adjusting mechanism 3 on the die sleeve 2, the die core 1 and the die sleeve 2 always keep good coaxiality, and the optical fiber sleeve cannot be eccentric, so that the quality of a product is ensured; meanwhile, the installation is convenient and fast, and the work efficiency is improved.

In this embodiment, the mold core 1 includes a mold core main body 11 and an inner core tube 12 disposed at a first end of the mold core main body 11, and the mold core main body 11 is connected to a hole wall of the mold core mounting through hole; the inner core tube 12 extends into the forming hole 21, and a preset distance is reserved between the inner core tube and the hole wall of the sizing hole 33;

wherein, the inner core tube 12 and the mold core main body 11 are both hollow tubes. The hollow tube is used for the optical fiber to pass through, and the optical fiber sleeve is formed outside the optical fiber.

Furthermore, an annular groove 24 surrounding the orifice of the material guide hole 22 is formed in the second end surface of the die sleeve 2, and the annular groove 24 and the material guide hole 22 are arranged along the same axis;

a plurality of mounting lugs 13 for embedding groove walls of the annular groove 24 are circumferentially arranged on the mold core main body 11; and a feeding hole 14 communicated with the interval space is formed between the adjacent mounting lugs 13, and materials are injected into the interval space through the feeding hole 14.

When the mold core 1 is installed, the mold core 1 is aligned to the material guide hole 22, the installation lugs 13 are installed in the annular groove 24, and the coaxiality between the mold core 1 and the mold sleeve 2 can be ensured through the combined action of the installation lugs 13.

In this embodiment, the forming holes 21 and the material guiding holes 22 are coaxially disposed circular holes, and the aperture of the forming holes 21 is smaller than that of the material guiding holes 22.

Further, the mounting projection 13 is an arc-shaped projection, and the outer diameter of the mounting projection 13 is equal to the inner diameter of the annular groove 24.

Referring to fig. 3, the mounting protrusions 13 are arranged at intervals, the material supply for injection molding can be performed on the space through the feed ports 14, and the feed ports 14 are arranged around the mold core main body 11, so that the material supply can be performed on the space uniformly, and the molding quality of the optical fiber sleeve is ensured.

As a preferable scheme of this embodiment, the number of the arc-shaped protrusions is four, and an included angle between two adjacent arc-shaped protrusions is 90 °.

Optionally, the number of the arc-shaped protrusions can also be three, and an included angle between two adjacent arc-shaped protrusions is 120 °. The preferred mode of setting up of arc lug is for following the periphery evenly distributed of mold core main part 11 can guarantee the feeding is even in the interval space, makes simultaneously the injection molding power of mold core 1 distributes evenly, improves the stability of structure.

In this embodiment, the adjusting mechanism 3 further includes an annular connecting portion 34, and the connecting portion 34 abuts against the front end surface of the die sleeve 2; wherein, in order to ensure the forming effect in the sizing hole 33, the material of the connecting pipe 32 is the same as that of the sleeve.

The outer side wall of the connecting portion 34 is connected to the inner wall of the mounting sleeve 31, and the inner edge of the connecting portion 34 is connected to the outer side wall of the connecting tube 32. The connecting part 34 plays a role in connection, and the connecting part 34 is annular and can ensure the coaxiality of the connecting pipe 32 and the mounting sleeve 31; simultaneously connecting portion 34 laminate in the preceding terminal surface setting of die sleeve 2 plays sealed effect, prevents that the material of moulding plastics from oozing, avoids moulding plastics pressure and crosses lowly, leads to the poor problem of shaping quality.

In this embodiment, a stepped groove 23 is formed in an edge of a first end surface of the die sleeve 2, the adjusting mechanism 3 is detachably connected to the stepped groove 23, a limiting hole 25 is formed in a groove wall of the stepped groove 23 along a preset first direction, and an elastic component 26 is arranged in the limiting hole 25; the preset first direction is a direction perpendicular to the central axis of the die sleeve 2;

and a clamping hole 35 used for elastically clamping the elastic component 26 is formed in the inner side wall of the mounting sleeve 31.

Installation during guiding mechanism 3, will connecting pipe 32 align in shaping hole 21 inserts, presses simultaneously elastic component 26 makes it take place elastic deformation, installation sleeve 31 cup joint in on the ladder groove 23, it is rotatory installation sleeve 31 extremely joint hole 35 align in elastic component 26 loosens elastic component 26, elastic component 26 resets and the block connect in joint hole 35, make guiding mechanism 3 fixed connection in on the sleeve pipe. Similarly, when the adjusting mechanism 3 is detached, the elastic component 26 is pressed to be elastically deformed, and the elastic component 26 is separated from the clamping hole 35, so that the adjusting mechanism 3 is detached from the sleeve.

Specifically, the elastic assembly 26 includes a lifting column 261 and a spring 262, a first end of the spring 262 is connected with the bottom wall of the limiting hole 25, and a second end of the spring 262 is connected with the lifting column 261; one end of the lifting column 261 far away from the spring 262 extends into the limiting hole 25. Preferably, an end surface of the lifting column 261 far away from the spring 262 is spherical. Jacking post 261 block connect in when in the joint hole 35, the mounting sleeve 31 can for the ladder groove 23 is rotatory, the sphere on jacking post 261 top can play good transition effect, reduces wearing and tearing, avoids the structure to interfere.

The lifting column 261 is displaced under the elastic force of the spring 262, and when the lifting column extends into the clamping hole 35, the adjusting mechanism 3 is connected with the sleeve.

Further, a sliding groove 27 is formed in the outer side wall of the die sleeve 2 along the preset first direction, the sliding groove 27 is arranged on one side of the limiting hole 25, and the sliding groove 27 is communicated with the limiting hole 25;

a connecting rod 28 is slidably connected in the sliding groove 27, a first end of the connecting rod 28 is connected with the jacking column 261, and a second end of the connecting rod 28 is exposed out of the sliding groove 27 and is connected with a button 29; wherein the connecting rod 28 is an L-shaped rod.

The during operation is pressed button 29, button 29 can drive connecting rod 28 is followed spout 27 displacement downwards, connecting rod 28 drives jacking post 261 pressfitting downwards spring 262 will mounting sleeve 31 cup joint in on the ladder groove 23, and it is rotatory mounting sleeve 31 works as jacking post 261 aligns just in during joint hole 35 on the mounting sleeve 31 inside wall, jacking post 261 can elasticity resets takes place under spring 262's the elastic force, makes jacking post 261 block connect in the joint hole 35, accomplish adjustment mechanism 3's installation.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.