CN1386622A

CN1386622A - Die head for dual-colour injection moulding

Info

Publication number: CN1386622A
Application number: CN 01112949
Authority: CN
Inventors: 陈庐一
Original assignee: HUAWANG INDUSTRY Co LTD SHANGHAI
Current assignee: HUAWANG INDUSTRY Co LTD SHANGHAI
Priority date: 2001-05-22
Filing date: 2001-05-22
Publication date: 2002-12-25

Abstract

A die head structure for dual-colour injection moulding is suitable for the injection moulding machine with dual extrusion screws for feeding. The two materials with different colours in the viscose fluid state can be sprayed into mould by nozzles to form dual-colour plastic products.

Description

But a kind of die head of double-shot moulding

A kind of double color mould header structure that is used for double-shot moulding machinery is in the injection machine of particularly suitable double extrusion screw feed.

In current plastic article industry, original single tone product changes to the color diversification gradually, and how two kinds of plastic liquids that dissolve can be used for mould before entering mould as the plastics machinery industry, key is the whether reasonable in design of die head, and meeting reasonable in design makes the organic integrator of plastics base substrate of two kinds of colors.Otherwise, not a large amount of rim charge waste of product, be exactly the unclear mixing base substrate of color.

In view of the problem that above-mentioned prior art exists, the inventor designs a kind of double-colored die head, and it has effectively solved the plastic material of two kinds of different colors, the dual-color plastic base substrate of the clear layer of behind die head, coming out, and this is the unique goal of the invention of the inventor.

It is to be oppositely arranged two feeding mouths at the upper end of circular die feeding mouth that technical scheme of the present invention constitutes, and this feeding mouth is respectively by two extruding screw feed, and in order to ensure the smooth and easy of runner, the circular die inwall requires smooth.

For detailed explanation specific structural features of the present invention, be described further as follows below in conjunction with accompanying drawing:

But Fig. 1 is the structural representation of the die head of a kind of double-shot moulding of the present invention;

But Fig. 2 is the plane outspread drawing of the die head of a kind of double-shot moulding of the present invention;

But Fig. 3 is the sectional schematic diagram of the die head of a kind of double-shot moulding of the present invention;

But Fig. 4 is the die section separation structure schematic diagram of the die head of a kind of double-shot moulding of the present invention.

See also Fig. 1, shown in figure, column type die head body 1, it is provided with upper end 11, lower end 12,11 sides, upper end at column type die head body 1 are connected to nozzle 3, and with the nozzle 3 corresponding nozzles 4 that are provided with, column type die head body 1 inwall is the smooth inner wall face, nozzle 3,4 and adjusting lever cylinder 5 connect airtight, adjusting lever cylinder 5 and extruding screw socket.

See also Fig. 2, it is the expansion plane of column type die head 1, can be clearly seen that from figure nozzle 3 and nozzle 4 differ 180 ° respectively, dotted line is represented the flow direction of plastic material behind nozzle under the high temperature, in 180 ° the round breakpoint lines merge point of two kinds of color material just, this merge point is owing to be two kinds of color colloidal sol places, non-uniform phenomenon may appear, this problem can be by manual processing, Fig. 3 has showed the upper mould section of this double-colored die head body in addition, the flow direction of the high temperature plastic material that is penetrated by nozzle 3,4.

By the as above double-colored die design of injection machine, can avoid two kinds of colors after plasticizing, to be the mixing of the material of viscous state fully, provide a kind of two look base substrates clearly to die cavity.

Claims

1. but the die head of a double-shot moulding, it is made of extruding screw, die head, feeding mouth etc., it is characterized in that: column type die head body (1) is respectively equipped with upper end (11) and lower end (12), side, upper end (11) at column type die head body (1) is provided with nozzle (3), be provided with nozzle (4) with the corresponding side of nozzle (3), column type die head body (1) inwall is the smooth inner wall face, and nozzle (3), (4) are connected with adjusting lever cylinder body (5), adjusting lever cylinder body (5) and extruding screw socket.