CN2715969Y

CN2715969Y - Dead angle preventing interval channel blow moulding die

Info

Publication number: CN2715969Y
Application number: CNU032238630U
Authority: CN
Inventors: 李�浩; 陈新辉
Original assignee: 马镇鑫
Current assignee: Guangdong Jinming Machinery Co Ltd
Priority date: 2003-03-03
Filing date: 2003-03-03
Publication date: 2005-08-10
Anticipated expiration: 2013-03-03

Abstract

The utility model relates to a new type dead angle preventing interval channel blow molding die, which is characterized in that the cut angle on the both ends of the curve of a main channel (1) of the blow molding die is an obtuse angle. The die neck and the channel seat of the blow molding die are split into halves along the centerline of the main channel (1). The new type dead angle preventing interval channel blow molding die can effectively reduce or eliminate the viscous flow of the materials in the channel, improving the quality of the finished product.

Description

A kind of novel no dead angle runner blowing head

Described technical field:

The utility model relates to a kind of no dead angle runner blowing head of novel plastic inflation film manufacturing machine.

Background technology:

Because bore the limitation that the runner hole is caused in die head, the corner of the runner of the blowing head of plastic film blowing machine in the past all is the right angle, like this, viscous flow to a certain degree always takes place in material when flowing through the corner, forms the logistics dead angle, influences the quality of finished film.

Technology contents:

So that eliminate above-mentioned material to a certain degree viscous flow takes place always when flowing through the corner in order to reduce, form the logistics dead angle, improve the quality of finished film, the utility model provides: a kind of novel no dead angle runner blowing head, it is characterized in that: the angle of cut at blowing head sprue (1) bend two ends is the obtuse angle.Facts have proved, the angle of cut at blowing head sprue (1) bend two ends greater than 90 the degree (being the obtuse angle), the viscous flow that material is taken place when flowing through the corner be less than the angle of cut be 90 the degree or less than 90 the degree situations; Certainly, the angle at obtuse angle is big more, and the viscous flow of generation is more little.

Carry out machining for convenience, the mould neck (3) or the runner seat (4) of blowing head can be split into two halves along sprue (1) center line, promptly blowing head is split into two halves, on two sections, carves half of sprue (1) respectively respectively in the position of default sprue (1) center line; At last divided two halves are reassembled into a complete blowing head, to realize the no dead angle runner processing of blowing head sprue (1).

The angle of the elbow part in the runner (2) is the obtuse angle.This is in order to reduce or eliminate the viscous flow of material equally.

Therefore three-dimensional the distribution, do not separate the elbow part in the runner (2) from die head because runner (2) is not distributed in same plane, can carry out individuality processing, realizes that the angle of the elbow part in the runner (2) is the purpose at obtuse angle.Then, the elbow part through processing that will separate again is reinstalled in the die head; Realize the no dead angleization of runner (2).

The corner of runner (1) or (2) is an arc.The corner is stagnantization of logistics that arc has further been eliminated this place.

Description of drawings:

Fig. 1, a kind of die head schematic diagram of the present utility model.

The schematic diagram of one of Fig. 2, the utility model mould neck (3) two sections.

The schematic diagram of one of Fig. 3, the utility model runner seat (4) two sections.

Embodiment:

The mould neck (3) of blowing head is split into two halves along being preset as sprue (1) center line A to A, on two cross section A-A, processes three sprues respectively; Runner seat (4) with die head is split into two halves along being preset as sprue (1) center line B to B again, processes a sprue respectively on two section B-B, and the angle of its bent port part (7) is 120 degree or 150 degree.

Again the part cutting of the bent port part (6) of the runner (2) in the core rod body (5) of die head is gone, stay the bent port part room; Then, carry out the processing of the curved notch portion of runner (2) outside die head, the angle that order is curved mouthful is 150 degree, and is last, carries out the assembling of die head by Fig. 1: the orthogonal assembling of two semi-sections of two semi-sections of mould neck (3) and runner seat (4); The above-mentioned bent port part room that stays of again bent port part (6) that processes part being packed into.

Claims

1, a kind of novel no dead angle runner blowing head, it is characterized in that: the angle of cut at blowing head sprue (1) bend two ends is the obtuse angle.

2, novel no dead angle runner blowing head according to claim 1, it is characterized in that: the mould neck (3) of blowing head or runner seat (4) are split into two halves along sprue (1) center line.

3, novel no dead angle runner blowing head according to claim 1, it is characterized in that: the angle of the elbow part in the runner (2) is the obtuse angle.

4, novel no dead angle runner blowing head according to claim 3, it is characterized in that: the elbow part in the runner (2) is separated from the diehead.

5, according to arbitrary described novel no dead angle runner blowing head in the claim 1 to 4, it is characterized in that: the corner of runner (1) or (2) is an arc.