CN211590941U

CN211590941U - Expansion die for optical fiber heat-shrinkable tube

Info

Publication number: CN211590941U
Application number: CN201922305924.3U
Authority: CN
Inventors: 高志文
Original assignee: Pinghu Yuwo Communication Technology Co ltd
Current assignee: Pinghu Yuwo Communication Technology Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-09-29
Anticipated expiration: 2029-12-20

Abstract

The utility model provides an optic fibre pyrocondensation pipe expansion mould, which comprises a sleeve, an expansion mould pipe for carrying out the expansion to the work piece, carry out hydrologic cycle's circulation sleeve and carry out fixed mounting's ring flange to this mould, expansion mould pipe fixed mounting is in the sleeve, circulation sleeve and ring flange fixed mounting are respectively at telescopic both ends, be equipped with the work piece through-hole in the expansion mould pipe, be equipped with the negative pressure hole on the lateral wall of expansion mould pipe, the work piece stretches into in the work piece through-hole, the rethread negative pressure hole carries out the negative pressure to the work piece through-hole, make the work piece take place the expansion, thereby realize expanding the work piece, the simple structure of this expansion mould, do benefit to production, can effectively reduce the manufacturing cost of mould.

Description

Expansion die for optical fiber heat-shrinkable tube

Technical Field

The utility model relates to a mould field, concretely relates to optic fibre pyrocondensation pipe expansion mould.

Background

The heat shrinkable tube is a special polyolefin heat shrinkable sleeve, and during production and processing, a tube to be processed is heated to a high elastic state, is expanded by applying a load, is rapidly cooled under the condition of keeping the expansion, and enters a glass state, so that the state is fixed. When the pipe is heated again in use, the pipe can be recovered to a high elastic state, and if no load exists, the pipe can be retracted. The tube diameter can be expanded by using such a characteristic of the heat shrinkable tube.

At present, the pipe is expanded to current pyrocondensation pipe generally adopts negative pressure evacuation mode or strap expansion mode, and the expansion mould structure on the market is comparatively complicated at present, is unfavorable for mould production for the cost of equipment becomes high, is unfavorable for enterprise's development.

Disclosure of Invention

Not enough more than, the utility model aims to solve the technical problem that an optic fibre pyrocondensation pipe expansion mould is provided, the simple structure of this mould does benefit to production, can effectively reduce the manufacturing cost of mould, reduces the cost input of enterprise.

In order to solve the technical problems, the utility model adopts the technical proposal that,

the utility model provides an optic fibre pyrocondensation pipe expansion mould, includes sleeve, expansion mould pipe, circulation sleeve and ring flange, and expansion mould pipe fixed mounting is in the sleeve, and circulation sleeve and ring flange fixed mounting are equipped with the work piece through-hole at the intraductal work piece both ends at telescopic both ends respectively of expansion mould, are equipped with the negative pressure hole on the lateral wall of expansion mould pipe.

When adopting above technical scheme, the utility model discloses still further adopt or make up and adopt following technical scheme.

The expansion die pipe comprises a first water cooling section, a second water cooling section and an expansion section, wherein the first water cooling section and the second water cooling section are fixedly connected at two ends of the expansion section, and negative pressure holes are formed in the side wall of the expansion section.

The expansion section is provided with a first end face disc on the end face connected with the first water cooling section, the outer end of the first water cooling section is provided with a second end face disc, and a first water cooling cavity is formed among the first end face disc, the second end face disc, the first water cooling section and the sleeve.

The first end face disc is provided with a water through hole which penetrates through the expansion section.

The negative pressure holes are distributed along the axial direction of the expansion section, and the distance between the negative pressure holes and the first water cooling section is larger as the negative pressure holes are farther away from the first water cooling section.

The water passing holes and the negative pressure holes are arranged in a staggered manner.

And a water inlet hole and an air exhaust hole are formed in the side wall of the sleeve, the position of the water inlet hole corresponds to that of the first water-cooling cavity, and the position of the air exhaust hole corresponds to that of the expansion section.

The two ends of the sleeve are respectively provided with a discharge hole and a connecting hole, the expansion die pipe extends into the circulating sleeve through the connecting hole, the discharge hole is connected with the through hole of the workpiece, and the side wall of the circulating sleeve is provided with a water outlet hole.

The negative pressure hole comprises a first negative pressure section and a second negative pressure section, the first negative pressure section is located on the outer side of the second negative pressure section, and the aperture of the first negative pressure section is larger than that of the second negative pressure section.

The flange plate is internally and fixedly provided with a pipe inlet pipe, and the pipe inlet pipe is internally provided with a pipe inlet hole which is a conical hole with a small outside and a large inside.

The beneficial effects of the utility model are that, in the work piece stretched into the work piece through-hole, the rethread negative pressure pore pair work piece through-hole carried out the negative pressure for the work piece takes place the expansion, thereby realizes expanding the work piece, and this expansion mould's simple structure does benefit to production, can effectively reduce the manufacturing cost of mould, reduces the cost input of enterprise.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a schematic structural view of an expansion die tube.

Fig. 4 is a partial perspective view at a.

Reference numerals: sleeve 1, expansion die pipe 2, circulation sleeve 3, ring flange 4, work piece through-hole 5, negative pressure hole 6, first water-cooling section 7, second water-cooling section 8, expansion section 9, first terminal surface dish 10, second terminal surface dish 11, first water-cooling chamber 12, water hole 13, inlet opening 14, extraction opening 15, negative pressure chamber 16, discharge opening 17, connecting hole 18, apopore 19, second water-cooling chamber 20, first negative pressure section 21, second negative pressure section 22, advance pipe 23, advance tub of hole 24.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The utility model provides an optic fibre pyrocondensation pipe expansion mould, including sleeve 1, an expansion mould pipe 2 for carrying out the expansion to the work piece, carry out hydrologic cycle's circulation sleeve 3 and carry out fixed mounting's ring flange 4 to this mould, expansion mould pipe 2 fixed mounting is in sleeve 1, circulation sleeve 3 and ring flange 4 respectively fixed mounting at sleeve 1's both ends, be equipped with work piece through-hole 5 in expansion mould pipe 2, be equipped with negative pressure hole 6 on the lateral wall of expansion mould pipe 2, the work piece stretches into in the work piece through-hole 5, rethread negative pressure hole 6 carries out the negative pressure to work piece through-hole 5, make the work piece take place the expansion, thereby the realization expands the work piece, the simple structure of this expansion mould, do benefit to production, can effectively reduce the manufacturing cost of mould, reduce the cost input of.

Expansion mould pipe 2 includes first water-cooling section 7, second water-cooling section 8 and expansion section 9, first water-

cooling section

7 and 8 fixed connection of second water-cooling section are at the both ends of expansion section 9, be equipped with negative pressure hole 6 on the lateral wall of expansion section 9, it is preferred, negative pressure hole 6 sets up along the diameter direction of expansion mould pipe 2, first water-cooling section 7, second water-cooling section 8 and expansion section 9 form water-cooling chamber and the negative pressure chamber that corresponds with sleeve 1 cooperation respectively, realize the phenomenon of cooling and expansion, expansion section 9 forms negative pressure chamber 16 with the circulation sleeve.

The expansion section 9 is provided with a first end face disc 10 on the end face connected with the first water cooling section 7, the outer end of the first water cooling section 7 is provided with a second end face disc 11, a first water cooling cavity 12 is formed between the first end face disc 10, the second end face disc 11, the first water cooling section 7 and the sleeve 1, and through the arrangement of the first water cooling cavity 12, the surface of a workpiece is cooled, so that the surface of the workpiece after expansion is more smooth.

The first end face plate 10 is provided with a water through hole 13, and the water through hole 13 penetrates through the expansion section 9, so that cold water in the first water cooling cavity 12 can conveniently flow into the second water cooling section.

The negative pressure hole 6 is distributed along the axial direction of the expansion section 9, the farther the negative pressure hole 6 is from the first water cooling section 7, the larger the adjacent distance is, when in work, the workpiece firstly passes through the first water cooling section, then passes through the expansion section, and finally passes through the second water cooling section, and the workpiece needs larger expansion force when just moving to the expansion section, so be equipped with comparatively dense negative pressure hole 6 on the position close to the first water cooling section 7.

The water passing holes 13 and the negative pressure holes 6 are arranged in a staggered mode, so that water in the water passing holes 13 is prevented from flowing into the negative pressure holes 6, and expansion and water cooling separation are achieved.

The side wall of the sleeve 1 is provided with a water inlet 14 for water circulation and an air extraction hole 15 for forming negative pressure, the position of the water inlet 14 corresponds to the position of the first water-cooling cavity 12, and the position of the air extraction hole 15 corresponds to the position of the expansion section 9.

The two ends of the circulation sleeve 3 are respectively provided with a discharge hole 17 and a connecting hole 18, the expansion die pipe 2 extends into the circulation sleeve 3 through the connecting hole 18, the discharge hole 17 is connected with the workpiece through hole 5, the side wall of the circulation sleeve 3 is provided with a water outlet hole 19, a second water cooling cavity 20 is formed between the discharge hole 17 and the connecting hole 18, and the first water cooling cavity and the second water cooling cavity form a water circulation loop.

Negative pressure hole 6 includes first negative pressure section 21 and second negative pressure section 22, and first negative pressure section 21 is located the outside of second negative pressure section 22, and the aperture of first negative pressure section 21 is greater than the aperture of second negative pressure section 22, because the aperture of negative pressure hole 6 is less, makes the drill bit fracture easily when drilling, through setting negative pressure hole 6 to the step shaft shape, can be convenient for process negative pressure hole 6.

The pipe inlet pipe 23 is fixedly installed in the flange plate 4, the pipe inlet hole 24 is formed in the pipe inlet pipe 23, the pipe inlet hole 24 is a small outer conical hole and a large inner conical hole, and through the arrangement of the conical holes, the gap between the workpiece and the pipe inlet pipe 23 can be reduced, air leakage is prevented, and therefore the expansion efficiency of the workpiece is improved.

When the die is installed, the connection parts between the components are wound through the thread seal tape, so that the sealing performance of the connection parts between the components is ensured.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the terms corresponding to the reference numerals in the figures are used more herein, the possibility of using other terms is not excluded; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides an optic fibre pyrocondensation pipe expansion mould, its characterized in that, includes sleeve (1), expansion mould pipe (2), circulation sleeve (3) and flange dish (4), and expansion mould pipe (2) fixed mounting is in sleeve (1), and circulation sleeve (3) and flange dish (4) are fixed mounting respectively at the both ends of sleeve (1), are equipped with work piece through-hole (5) in expansion mould pipe (2), are equipped with negative pressure hole (6) on the lateral wall of expansion mould pipe (2).

2. The optical fiber heat shrinkable tube expanding die according to claim 1, wherein the expanding die tube (2) comprises a first water cooling section (7), a second water cooling section (8) and an expanding section (9), the first water cooling section (7) and the second water cooling section (8) are fixedly connected to two ends of the expanding section (9), and a negative pressure hole (6) is formed in the side wall of the expanding section (9).

3. An optical fiber heat shrinkable tube expanding die according to claim 2, wherein a first end face disc (10) is arranged on an end face of the expanding section (9) connected with the first water cooling section (7), a second end face disc (11) is arranged at an outer end of the first water cooling section (7), and a first water cooling cavity (12) is formed among the first end face disc (10), the second end face disc (11), the first water cooling section (7) and the sleeve (1).

4. An optical fiber heat shrinkable tube expanding die according to claim 2, wherein a water hole (13) is provided on the first end face plate (10), and the water hole (13) penetrates through the expanding section (9).

5. An optical fiber heat shrinkable tube expanding die according to claim 2, wherein the negative pressure holes (6) are distributed along the axial direction of the expanding section (9), and the distance between the negative pressure holes (6) and the first water-cooled section (7) is larger as the distance between the negative pressure holes is farther.

6. An optical fiber heat shrinkable tube expanding die according to claim 4 or 5, wherein the water through holes (13) and the negative pressure holes (6) are arranged alternately.

7. An optical fiber heat shrinkable tube expanding die according to claim 3, wherein a water inlet hole (14) and an air suction hole (15) are provided on the side wall of the sleeve (1), the position of the water inlet hole (14) corresponds to the position of the first water cooling chamber (12), and the position of the air suction hole (15) corresponds to the position of the expanding section (9).

8. The optical fiber heat shrinkable tube expanding die according to claim 1, wherein a discharge hole (17) and a connecting hole (18) are respectively formed at both ends of the sleeve (1), the expanding die tube (2) extends into the circulating sleeve (3) through the connecting hole (18), the discharge hole (17) is connected with the workpiece through hole (5), and a water outlet hole (19) is formed in the side wall of the circulating sleeve (3).

9. An optical fiber heat shrinkable tube expanding die according to claim 1, wherein the negative pressure hole (6) comprises a first negative pressure section (21) and a second negative pressure section (22), the first negative pressure section (21) is located outside the second negative pressure section (22), and the first negative pressure section (21) has a larger aperture than the second negative pressure section (22).

10. The expansion die for the optical fiber heat shrinkable tube according to claim 1, wherein a tube inlet member (23) is fixedly installed in the flange (4), a tube inlet hole (24) is formed in the tube inlet member (23), and the tube inlet hole (24) is a tapered hole with a small outside and a large inside.