CN217573986U

CN217573986U - Melt pressure regulation formula PVC tubular product extrusion tooling

Info

Publication number: CN217573986U
Application number: CN202220027407.3U
Authority: CN
Inventors: 王梦祺; 陈江慧; 叶伟东
Original assignee: Linhai Weixing New Building Materials Co Ltd
Current assignee: Linhai Weixing New Building Materials Co Ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-10-14
Anticipated expiration: 2032-01-07

Abstract

The utility model discloses a melt pressure regulation formula PVC tubular product extrusion tooling, including bush and mandrel, the bush includes the flat straight section of bush that bush flaring section and multistage connected gradually, and the mandrel includes the flat straight section of mandrel flaring section and multistage connected gradually, and the mandrel is located the bush, constitutes the tubular product die cavity between mandrel and the bush, and the connection screw passes the flat straight section of multistage horizontally connected's mandrel and the further connection of the flat straight section of mandrel flaring section of realization mandrel flaring section and mandrel flaring section in proper order. The utility model discloses a tubular product mould is multisection detachable construction, adjusts melt pressure through adding/tearing straight section subassembly open, realizes the stability of different lubricating system formulas and extrudes, and the process range is extruded to the tubular product of adaptable broad simultaneously, solves the mould cost of manufacture problem that should the process difference and bring.

Description

Melt pressure regulation formula PVC tubular product extrusion tooling

Technical Field

The utility model belongs to the technical field of the tubular product mould, concretely relates to melt and press regulation formula PVC tubular product extrusion tooling.

Background

The PVC pipe tail end extrusion die consists of a neck die and a core die, and the applicability of the same die to different formulas and processes in the production process is different, for example, the fusion pressure in the production process is different due to different formulas, so that the production of pipes and the stability of the die are influenced. In the existing production habit, molds with different sizes and specifications are often required to be manufactured for matching different formulas and processes so as to realize continuous and stable extrusion of pipes, so that the manufacturing cost of the molds is increased, and the replacement of the molds is complicated.

The Chinese patent CN202685278U provides an extrusion die head capable of quickly disassembling and replacing a core rod, which mainly improves the original integrated core rod into a two-end type, connects two sections of core rods through a main rod, and can take out a shaping sleeve or install the upper half section of core rod into the shaping sleeve through the main rod to realize the purpose of quick replacement, but the applicability to the die is not improved, and meanwhile, the problem of production stability caused by overhigh melt pressure under the condition that different formulas and processes are limited is not considered.

SUMMERY OF THE UTILITY MODEL

To the problem, an object of the utility model is to provide a melt pressure regulation formula PVC tubular product extrusion tooling.

In order to achieve the purpose, the following technical scheme is provided:

the utility model provides a melt pressure regulation formula PVC tubular product extrusion tooling, includes bush and mandrel, and the bush includes the flat straight section of bush that bush flaring section and multistage connect gradually, and the mandrel includes the flat straight section of mandrel flaring section and multistage connect gradually, and the mandrel is located the bush, constitutes the tubular product die cavity between mandrel and the bush.

Furthermore, the flat straight sections of the multi-section mouth mold are in threaded connection, the flat straight sections of the multi-section core mold are in threaded connection, the flat straight sections of the mouth mold are in threaded connection with the mouth expanding section of the mouth mold, the flat straight sections of the core mold are in threaded connection with the mouth expanding section of the core mold, each flat straight section of the mouth mold corresponds to each flat straight section of the core mold, the mouth expanding section of the mouth mold corresponds to the mouth expanding section of the core mold, the mouth expanding sections of the mouth mold are in threaded connection, disassembly is convenient, and mold replacement efficiency is improved.

Furthermore, the connecting screws sequentially penetrate through the core mold straight section and the core mold flaring section which are horizontally connected in multiple sections to further connect the core mold straight section and the core mold flaring section, and the problem that the material blocking and coking risks are caused due to untight connection of components is solved.

Furthermore, the flat and straight section of the neck ring mold is provided with air holes, so that the temperature of the flat and straight section can be adjusted by adjusting the ventilation quantity, and the risk of material bonding caused by continuous extrusion at a high temperature of Fuou is reduced.

Furthermore, the inner surface of the mouth expanding section of the mouth die and the outer surface of the mouth expanding section of the core die are coated with plating layers, the plating layers are made of Teflon materials, the Teflon materials are not easy to adhere to materials, and the risk of coke materials caused by the fact that the materials adhere to the surface of the die can be reduced.

The beneficial effects of the utility model reside in that: the utility model discloses a tubular product mould is multisection detachable construction, adjusts melt pressure through adding/tearing straight section subassembly open, realizes the stability of different lubricating system formulas and extrudes, and the process range is extruded to the tubular product of adaptable broad simultaneously, solves the mould cost of manufacture problem that should the process difference and bring.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

in the figure: 1. a mouth-expanding section of the mouth mold; 2. a core mold flaring section; 3. a neck ring mold flat straight section; 31. air holes; 4. a core mold straight section; 5. and connecting screws.

Detailed Description

The present invention will be further described with reference to the drawings, but the scope of the present invention is not limited thereto.

A melt-pressure adjusting type PVC pipe extrusion die comprises a die flaring section 1, a core die flaring section 2, a die flat straight section 3, a core die flat straight section 4 and a connecting screw 5, as shown in figure 1, the three die flat straight sections 3 are connected in sequence by horizontal threads, the three core die flat straight sections 4 are connected in sequence by horizontal threads, the core die flat straight section 4 is positioned in the die flat straight section 3, a pipe extrusion die cavity is formed between the two, the die flaring section 1 is horizontally connected with the die flat straight section 3 by the horizontal threads, the core die flaring section 2 is horizontally connected with the core die flat straight section 4 by the horizontal threads, the core die flaring section 2 is positioned in the die flaring section 1, a pipe die cavity is formed between the two, the die cavity is communicated with the die cavity at the core die flat straight section 4, the connecting screw 5 sequentially penetrates through the core die flat straight sections 4 and the core die flaring section 2 which are horizontally connected, the core die flat straight section 4 is further connected with the core die flaring section 2, each die flat section 3 is provided with an air hole 31, the inner surface of the die flaring section 1 and the core die flaring section 2 are coated with a special fluorine coating material.

Claims

1. The utility model provides a melt and press regulation formula PVC tubular product extrusion tooling, includes bush and mandrel, its characterized in that, and the bush includes the straight section of bush (3) that bush flaring section (1) and multistage connect gradually, and the mandrel includes the straight section of mandrel (4) that mandrel flaring section (2) and multistage connect gradually, and the mandrel is located the bush, constitutes the tubular product die cavity between mandrel and the bush.

2. The melt-pressure adjustable PVC pipe extrusion die as claimed in claim 1, wherein the multiple sections of the die straight sections (3) are in threaded connection, the multiple sections of the core die straight sections (4) are in threaded connection, the die straight sections (3) are in threaded connection with the die flared section (1), the core die straight sections (4) are in threaded connection with the core die flared section (2), each section of the die straight section (3) corresponds to each section of the core die straight section (4), and the die flared section (1) corresponds to the core die flared section (2).

3. The melt-pressure adjustable PVC pipe extrusion die as claimed in claim 2, wherein the connecting screw (5) passes through the multiple horizontally connected core mold straight sections (4) and the core mold flaring sections (2) in sequence to further connect the core mold straight sections (4) and the core mold flaring sections (2).

4. The melt-pressure regulating type PVC pipe extrusion die as claimed in claim 3, wherein the die flat straight section (3) is provided with air holes (31).

5. A melt pressure regulated PVC pipe extrusion die as claimed in any one of claims 1 to 4, wherein the inner surface of the die flared section (1) and the outer surface of the core die flared section (2) are coated with a coating.