CN203580082U

CN203580082U - Extrusion mold for producing conductive glass steel pipe

Info

Publication number: CN203580082U
Application number: CN201320830515.5U
Authority: CN
Inventors: 李爱云
Original assignee: Individual
Current assignee: Beijing Huitong Technology Co Ltd
Priority date: 2013-12-16
Filing date: 2013-12-16
Publication date: 2014-05-07
Anticipated expiration: 2023-12-16

Abstract

The utility model provides an extrusion mold for producing a conductive glass steel pipe. The extrusion mold is used for extruding and shaping the conductive glass steel pipe in the pultrusion technology; the extrusion mold comprises an inner mold positioned at the same side with an feeding end and an outer mold positioned at the same side with a traction end, the inner mold is provided with an outer surface corresponding to the inner surface of the conductive glass steel pipe, the outer mold is provided with an inner surface corresponding to the outer surface of the conductive glass steel pipe, and the inner mold and the outer mold are arranged in parallel along the length direction of the conductive glass steel pipe. According to the extrusion mold for producing the conductive glass steel pipe, the inner mold and the outer mold are arranged in parallel, so that the conductive glass steel pipe is positioned at the outer side of the inner mold and the inner side of the outer mold and does not contact any object, and thus the longitudinal stress of the conductive glass steel pipe is greatly reduced, and then the pultrusion stress of the conductive glass steel pipe is reduced, the rate of finished products is enhanced, and the cost is saved.

Description

Extrusion die for manufacturing conductive glass reinforced plastic pipe

Technical Field

The utility model relates to an extrusion die, especially an extrusion die that can be used to make electrically conductive glass steel pipe through pultrusion technology.

Background

In electric demisters for the separation of gaseous impurities, anode tube bundles made of electrically conductive glass fiber reinforced plastics are increasingly used. For example, chinese patent CN 2376335Y provides an anode tube made of glass fiber reinforced plastic for an electric demister, wherein the cross section of the anode tube is a regular hexagon. The diameter of the inscribed circle of the anode tube with the regular hexagonal section can reach about 300mm, the wall thickness of the anode tube is 3-10mm, and the length of the anode tube can reach about 6 m. Therefore, the anode tube belongs to a component with larger length and thinner wall thickness, so that the anode tube can bear larger pulling force in the length direction, has lower strength in the side wall direction, and is easy to break in the manufacturing process when being manufactured by adopting a common pultrusion process.

Fig. 1 shows a schematic structural diagram of a pultrusion machine, as shown in fig. 1, wherein the pultrusion process is as follows: raw materials (such as glass fiber roving, a glass fiber continuous felt, a glass fiber surface felt and the like) are respectively placed on a creel 1 and a felt frame 2, under the action of traction force of a traction mechanism 5, glue is fully impregnated in a glue impregnation tank 3, then the raw materials are preliminarily shaped through the guidance of a series of pre-forming templates, finally the raw materials enter a heated extrusion die 4 and react and solidify at a certain temperature, so that a continuous section with smooth surface, stable size and high strength is obtained, and then the section is cut into required products under the action of a cutter 6. For the principle and process of the pultrusion process, reference can be made to the prior art ZL200810052981.9 and the like, and a detailed description thereof is omitted.

Among them, if the anode tube in CN 2376335Y is produced by the pultrusion machine shown in fig. 1, the portion of the anode tube clamped by the traction mechanism 5 is easily broken, so it is necessary to provide an extrusion die 4 that can be used to manufacture the conductive glass reinforced plastic tube by pultrusion process, so as to reduce the pultrusion stress of the anode tube, improve the yield, and save the cost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the present invention is to provide an extrusion mold for manufacturing conductive glass fiber reinforced plastic pipes to reduce or avoid the aforementioned problems.

For solving the technical problem, the utility model provides an extrusion die for making electrically conductive glass steel pipe, extrusion die is arranged in the pultrusion technology to electrically conductive glass steel pipe extrusion design, wherein, extrusion die includes that one is located the centre form of feed end one side and one is located the external mold that pulls end one side, the centre form have with the corresponding surface of internal surface of electrically conductive glass steel pipe, the external mold have with the corresponding internal surface of electrically conductive glass steel pipe, the centre form with the external mold is followed the length direction of electrically conductive glass steel pipe sets up side by side.

Preferably, the end portions of the inner die extend into the interior of the outer die.

Preferably, a heating device is arranged in the inner die.

Preferably, the outer mould surface is provided with heating means.

Preferably, a backflow glue groove is arranged below the junction position of the inner die and the outer die.

Preferably, the inner die is composed of one cylindrical inner die cylinder and six inner die corner pieces.

Preferably, the inner corner piece is an integral sheet with a 120-degree symmetrical structure.

The utility model discloses an extrusion die's centre form and external mold adopt to set up side by side, and consequently electrically conductive glass steel pipe does not have any object and its contact in the outside of centre form position, the inboard of external mold position, consequently greatly reduced electrically conductive glass steel pipe's vertical atress to reduce electrically conductive glass steel pipe's pultrusion atress, improved the yield, practiced thrift the cost.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,

FIG. 1 shows a schematic view of a pultrusion machine;

FIG. 2 is a schematic cross-sectional view of an electrically conductive glass fiber reinforced plastic tube according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of an electrically conductive glass fiber reinforced plastic tube according to another embodiment of the present invention;

fig. 4 is a side view of an extrusion die for manufacturing an electrically conductive glass fiber reinforced plastic pipe according to an embodiment of the present invention;

FIG. 5 shows a cross-sectional view A-A of FIG. 4;

fig. 6 shows a cross-sectional view B-B in fig. 4.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.

As shown in fig. 1, the extrusion mold for manufacturing the electric conductive glass fiber reinforced plastic pipe of the present invention is the extrusion mold 4 corresponding to fig. 1, i.e. the present invention provides an extrusion mold 4 with a special structure for manufacturing the electric conductive glass fiber reinforced plastic pipe 7 of the electric demister. The conductive glass fiber reinforced plastic pipe can be a conductive glass fiber reinforced plastic pipe 7 with a cross section in a positive direction as shown in fig. 2, or can be a conductive glass fiber reinforced plastic pipe 7 with a cross section in a regular hexagon as shown in fig. 3, and hatching is omitted in the cross sections of fig. 2 and 3 for the convenience of clear observation.

Fig. 4 shows a side view of an extrusion die 4 for manufacturing an electrically conductive glass fiber reinforced plastic tube according to an embodiment of the present invention; FIG. 5 shows a cross-sectional view A-A of FIG. 4; fig. 6 shows a cross-sectional view B-B in fig. 4. Figures 5 and 6 also omit cross-sectional hatching for clarity.

The extrusion die 4 for manufacturing the electric-conductive glass fiber reinforced plastic pipe shown in fig. 4-6 can be used for extrusion molding of the electric-conductive glass fiber reinforced plastic pipe 7 in a pultrusion process, that is, referring to fig. 1, the extrusion die 4 can be arranged in a pultrusion machine, and the pultrusion machine can comprise a creel 1 and/or a felt frame 2, a dip tank 3, a traction mechanism 5 and a cutter 6. Raw and other materials such as conductive carbon fiber, glass fiber follow creel 1 and/or felt frame 2 earlier behind the 3 abundant flooding glue solutions of steeping vat, through the direction of a series of preforming templates, obtain tentatively stereotype, get into from feed end one side at last the utility model discloses an extrusion tooling 4 for making conductive glass steel tube, later extrude on one side and stereotype, pull out conductive glass steel tube 7 that has extruded and stereotyped from traction end one side of extrusion tooling 4 through drive mechanism 5 on one side, reach design length when the conductive glass steel tube 7 that pulls out, can cut off through the cutter, repeat this process, can continuous processing obtain required conductive glass steel tube 7.

In the embodiment shown in fig. 4, the extrusion die 4 comprises an inner die 41 located at the side of the feeding end and an outer die 42 located at the side of the drawing end, the inner die 41 has an outer surface corresponding to the inner surface of the conductive glass fiber reinforced plastic pipe 7, the outer die 42 has an inner surface corresponding to the outer surface of the conductive glass fiber reinforced plastic pipe 7, and the inner die 41 and the outer die 42 are arranged side by side along the length direction of the conductive glass fiber reinforced plastic pipe 7. In addition, in a specific embodiment, the inner mold 41 may be a mold with an integral regular hexagonal cross section, or as shown in fig. 4, the inner mold 41 may also be composed of a cylindrical inner mold cylinder 411 and six inner corner mold pieces 412, and the inner corner mold pieces 412 are integral sheets with a 120-degree symmetrical structure.

Different from the existing extrusion mold, the inner mold 41 and the outer mold 42 of the extrusion mold 4 of the embodiment are arranged side by side, and the impregnated raw materials such as the conductive carbon fiber and the glass fiber are wrapped on the surface of the inner mold 41 and pulled towards the direction of the outer mold 42, so that the inner surface of the conductive glass steel tube 7 close to the inner mold 41 is firstly cured and molded, and the outer side of the inner mold 41 is hollow, and no object is in contact with the outer side of the conductive glass steel tube 7, so that the longitudinal stress of the conductive glass steel tube 7 can be greatly reduced, the pultrusion stress of the conductive glass steel tube 7 can be reduced, the yield is improved, and the cost is saved. In one embodiment, a heating device may be provided in the inner mold 41 to accelerate thermosetting molding of the inner surface of the conductive glass fiber reinforced plastic tube 7. Preferably, the heating device can be set to adopt multi-stage temperature control in different temperature ranges according to the characteristics of the resin viscose glue so as to adjust the curing speed and the performance after curing.

When the conductive glass steel tube 7 is drawn to reach the boundary position of the inner mold 41 and the outer mold 42, the inner surface of the conductive glass steel tube 7 is cured and molded, and is not required to be supported by the inner mold 41 after entering the outer mold 42, so that no object is contacted with the inner surface of the conductive glass steel tube 7, the longitudinal stress of the conductive glass steel tube 7 is further greatly reduced, the pultrusion stress of the conductive glass steel tube 7 is further reduced, the yield is improved, and the cost is saved.

At this time, the uncured excess glue on the outer surface of the conductive glass fiber reinforced plastic tube 7 is scraped off by the outer mold 42 along with the advance of the conductive glass fiber reinforced plastic tube 7. Therefore, in an embodiment, a glue return tank (not shown) may be disposed below the boundary position between the inner mold 41 and the outer mold 42, and the scraped glue is returned to the glue tank 3 for recycling.

And (3) as the conductive glass steel tube 7 enters the outer die 42, the outer surface of the conductive glass steel tube 7 is gradually solidified under the baking of residual heat, and finally the required conductive glass steel tube 7 is formed. In a specific embodiment, a heating device may be further disposed on the surface of the outer mold 42 to accelerate the curing speed of the outer surface of the conductive glass fiber reinforced plastic tube 7. Also preferably, the heating device can be set to adopt multi-stage temperature control in different temperature ranges according to the characteristics of the resin adhesives so as to adjust the curing speed and the performance after curing.

In addition, to facilitate guidance and to prevent the conductive glass fiber reinforced plastic tube 7 from being stuck in a misaligned state at the interface between the inner mold 41 and the outer mold 42, in one embodiment, the end portion of the inner mold 41 extends into the interior of the outer mold 42 to form a partially overlapping relationship.

It is to be understood by those skilled in the art that while the present invention has been described in terms of several embodiments, it is not intended that each embodiment cover a separate embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including all technical equivalents which are encompassed by the claims.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.

Claims

1. The extrusion die is used for extruding and shaping the conductive glass steel tube in a pultrusion process and is characterized by comprising an inner die and an outer die, wherein the inner die is positioned on one side of a feeding end, the outer die is positioned on one side of a traction end, the inner die is provided with an outer surface corresponding to the inner surface of the conductive glass steel tube, the outer die is provided with an inner surface corresponding to the outer surface of the conductive glass steel tube, and the inner die and the outer die are arranged side by side along the length direction of the conductive glass steel tube.

2. The extrusion die of claim 1 wherein the end portions of the inner die extend into the interior of the outer die.

3. Extrusion die according to claim 1, characterised in that a heating device is arranged in the inner die.

4. Extrusion die according to claim 1, wherein the outer die surface is provided with heating means.

5. The extrusion die of claim 1, wherein a reflow groove is disposed below the interface of the inner die and the outer die.

6. The extrusion die of claim 1 wherein said inner die is comprised of a cylindrical inner die cylinder and six inner die comer pieces.

7. The extrusion die of claim 6 wherein the inner die angle piece is a unitary sheet having a 120 degree symmetrical configuration.