CN2357902Y

CN2357902Y - Extrusion-forming equipment for plastic pipe material

Info

Publication number: CN2357902Y
Application number: CN99202931U
Authority: CN
Inventors: 戚培发
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-09
Filing date: 1999-03-09
Publication date: 2000-01-12
Anticipated expiration: 2009-03-09

Abstract

The utility model relates to an extrusion-forming device for plastic pipe material, which comprises an extrusion mould body, a front mould core body, a back mould core body, a mould sleeve, a core shaft, a transition body, a split-flow body, an inner split-flow ring, an outer split-flow ring and a sprocket wheel. The center of the extrusion mould body and the mould core is provided with a rotating core shaft, the front end of the core shaft is fixed to the front mould core body, and the back end of the core shaft is fixed to the sprocket wheel. The inner and the outer split-flow rings are arranged in the transition body, and the two split-flow rings, the transition body and the back mould core body form an outer-skin layer flow channel, a core layer flow channel and an inner-skin layer flow channel. When the sprocket wheel is driven to rotate by a motor, the core shaft drives the front mould core body to rotate because the outer surface of the front mould core body is provided with a plurality of helical grooves, and then the extrusion-forming equipment for plastic pipe material of the utility model is formed.

Description

A kind of extrusion molding apparatus of plastic pipe

The utility model relates to a kind of extrusion molding apparatus of plastic drain pipe, and particularly a kind of core layer foaming, endodermis and exodermis are hard layer, and inwall has the extrusion molding apparatus of the drainage pipe of spiral salient body simultaneously.

At present, general building indoor drainage tubing is based on the real wall plastic tube of inner wall smooth, exhaust resistance to current when the weakness of this tubing is draining is big, easily form the fluid vertical drop of splashing, with body collision friction, produce very strong noise, under the big situation of displacement, can bring the stifled impeded drainage phenomenon that waits of gas simultaneously.

The purpose of this utility model is to provide a kind of extrusion molding apparatus of plastic pipe, makes that the tube material and tube wall sandwich layer of extrusion molding is foaming layer, and inside and outside wall is a hard layer, and inwall has the plastic drain pipe of spirality raised body simultaneously; When waste water in the building discharged via this tubing, waste water was dirty along spiral salient body spiral vortex type in tubing inside, has improved drainage efficiency; Because the deadening of tubing core layer foaming layer can reduce drainage noise during draining.

The technical solution of the utility model is achieved in that a kind of extrusion molding apparatus of plastic pipe, comprise the outer die body of extruding, in extrude die body, in extrude die body, the front mould core body, back core rod body, die sleeve, mandrel, the transition body, divide fluid, the external shunt ring, interior flow splitter, sprocket wheel, one end and the transition body of die sleeve are fixed, the other end of transition body and outer mold squeeze-up are fixed, middle mould squeeze-up is positioned within the outer mold squeeze-up, inner mold squeeze-up one end and outer mold squeeze-up are fixed, the other end is fixed with the branch fluid that is located within outer mold squeeze-up and the transition body, in the branch fluid other end outside is fixing respectively, the external shunt ring, the inboard back core rod body interior with being located at flow splitter and die sleeve fixed; Establish a rotation mandrel at core rod body and inner mold squeeze-up center, mandrel front end and front mould core body are fixed, and core back-end and sprocket wheel are fixed, and sprocket wheel is connected with transmission device; The outer mold squeeze-up is provided with cortex charging aperture and sandwich layer charging aperture, form cortex runner and sandwich layer runner outside,, between interior three mould squeeze-ups, shunting through minute fluid and external shunt ring, interior flow splitter, form exodermis runner, endodermis runner and sandwich layer runner, compound runner via forming between back core rod body and die sleeve enters formed discharge runner between die sleeve and front mould core body.

Described rotation mandrel is characterized in that fixedly front mould core body of one end, and the core rod body is cylindrical, and its outer surface is provided with a plurality of spiral grooves, and the angle of spiral of its spiral groove is θ (0 °＜θ＜90 °); The other end and a sprocket wheel are fixed, and sprocket wheel links to each other with buncher, and the driven by motor sprocket wheel makes mandrel drive the rotation of front mould core body, thereby form plastic pipe described in the utility model at discharge runner place.

Described minute fluid is characterized in that forming a plurality of annular feeding mouths at minute fluid near mould squeeze-up cortex extrusion channel interface, divides in feeding mouth under the effect of flow cone, forms endodermis and two runners of exodermis; Enter exodermis annular channel and endodermis annular channel respectively through a minute fluid annular row material mouth; Also forming annular feeding mouth near sandwich layer incoming flow pipeline joint place, forming a discharge gate through the shunting action of minute fluid at minute fluid other end and enter the sandwich layer annular channel.

Described flow splitter, it is characterized in that inside and outside two flow splitters by near divide fluid one end to compound runner directional ring shape wall thickness by thick attenuation.

Effect of the present utility model is: liquid material enters extrusion channel simultaneously from two side direction charging apertures of mould squeeze-up, after minute fluid shunting, enter exodermis annular channel, endodermis annular channel and sandwich layer annular channel respectively, go into to discharge runner via compound runner is laggard, owing to be provided with a plurality of grooves at the front mould core outer surface, drive under the front mould core body rotation situation at the rotation mandrel, make that the plastic pipe sandwich layer of moulding is foaming layer, inside and outside cortex is a hard plastic layer, and inwall has the drainage pipe of many spirality projectioies simultaneously; This kind of pipe applications is in the building indoor drainage, because the spiral salient effect of its inwall can improve drainage efficiency; Again because this kind tubing sandwich layer is fine and closely woven closed pore foaming structure, so it has deadening, has reduced drainage noise.

Description of drawings:

Fig. 1 is a kind of structure cutaway view of the utility model

Fig. 2 is that A-A is to cutaway view

Below in conjunction with accompanying drawing the utility model is further specified:

Outer mold squeeze-up (1) in the utility model is connected and fixed with screw (29) with inner mold squeeze-up (3), inner mold squeeze-up (2) is positioned at (1), (3) within, outer mold squeeze-up (1) is fixing with screw (32) with transition body (8), within (1) and (8), be branch fluid (9), (9) fixedly connected with screw (31) with (3), in transition body (8), contain external shunt ring (10) and interior flow splitter (11) respectively and divide fluid (9) fixing to be threaded, back core rod body (4) with divide fluid (9) to be threaded, die sleeve (6) is fixing with screw (34) by die sleeve gland (27) with transition body (8), and copper coin (19) is fixed on the back core rod body (4) with screw (35).Front mould core body (5) is fixed on the mandrel (7) by spring (36) and preceding nut (17), rotation mandrel (7) is fixing with copper sheathing (16) and bearing (15), bearing (15) is fixed on the internal mold core body (3) by screw (30) with bearing gland (28), sprocket wheel (12) is fixed on the mandrel (7) by back nut (18), and rotation mandrel (7) is fixed in the center of mould by front and back nut (17), (18); Liquid hard cortex material and liquid sandwich layer foamed material enter cortex extrusion channel (21) and sandwich layer extrusion channel (20) from cortex charging aperture (13) and sandwich layer charging aperture (14) respectively, liquid state material after a minute fluid (9) shunting in the cortex extrusion channel (21) enters exodermis annular channel (22) and endodermis annular channel (24) respectively, and the liquid state material in the sandwich layer extrusion channel (20) enters sandwich layer annular channel (23) after minute fluid effect; (22), the liquid state material in (23), (24) the three laminar flow roads enters compound runner (25) and enters discharge runner (26) after compression; In conjunction with reference to Fig. 2, its outer surface of front mould core body (5) has spiral groove (37), sprocket wheel (12) drives mandrel (7) and front mould core body (5) rotation, and the shaped article of discharge is the plastic pipe that core layer foaming, inwall have spiral salient in discharging runner (26).

(33) are tube wall thickness bias adjustment jackscrew among Fig. 1; By changing front mould core body (5), can obtain difform spiral inner wall raised body.

Claims

1. the extrusion molding apparatus of a plastic pipe, comprise outer mold squeeze-up (1), middle mould squeeze-up (2), inner mold squeeze-up (3), front mould core body (5), back core rod body (4), die sleeve (6), mandrel (7), divide fluid (9), transition body (8), external shunt ring (10), interior flow splitter (11), sprocket wheel (12), it is characterized in that: rotation mandrel (7) front end and core rod body (5) are fixing, and rear end and sprocket wheel (12) are fixing; External shunt ring (10), interior flow splitter (11) form exodermis annular channel (22), sandwich layer annular channel (23), endodermis annular channel (24) jointly with transition body (8) and core rod body (4).

2. the extrusion molding apparatus of a kind of plastic pipe according to claim 1, it is characterized in that: sprocket wheel links to each other with motor, and mandrel (7) drives core rod body (5) rotation; Core rod body (5) outer surface is provided with many spiral grooves, and the angle of spiral of its spiral groove is θ (0 °＜θ＜90 °).

3. the extrusion molding apparatus of a kind of plastic pipe according to claim 1 is characterized in that: external shunt ring (10) and interior flow splitter (11) near divide fluid (9) one ends to its wall thickness of the other end gradually by thick attenuation, form streamlined.