CN101195270A

CN101195270A - Improved flow passage structure in die head device

Info

Publication number: CN101195270A
Application number: CNA2007103068097A
Authority: CN
Inventors: 梁斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-25
Filing date: 2007-12-25
Publication date: 2008-06-11

Abstract

The invention provides an improved channel structure in a die head arrangement. The outlet position of a channel is connected to a channel of a reversed triangular distribution area, the reversed triangular distribution area is a triangular buffer area on the channel, one vertex point of which faces the direction of feeding and the bottom line of which faces the direction of discharging, and the channel depth of the triangular buffer area is shallower than that of the bottom portion of the channel, the raw material flowing through the area is enabled to obtain different damping, and fluid is favorable to be uniformly divided to both sides in the channel for guaranteeing the fluid at the bottom line of the reversed triangular distribution area uniformly flowing along the direction of breadth, thereby guaranteeing that the fluid which flows out from die head is uniform.

Description

Improvement flow passage structure in the die head device

Technical field

The present invention relates to a kind of die head device that is used to produce the extrusion moulding equipment of plastic plate, film, the improvement flow passage structure in the concrete finger print head unit.

Background technology

Used production plastic plate, film extruding production line is made up of extruder and composite membrane head former now, and different materials is combined, and every layer thickness is set as requested.Runner in the die head device is that clothes hanger type and flat face distribute district's Combination Design, and this structural design is arranged at the holding screw on runner both sides and made holding screw be not easy near liquid flow, and then is unfavorable for sealing.

Summary of the invention

The object of the present invention is to provide the improvement flow passage structure in the die head device, help arranging the matched moulds holding screw, can be so that the matched moulds holding screw, can obtain the uniform fluid that flows more near runner, thereby improve the stability of producing, guarantee to produce high-quality product.

For achieving the above object, the invention provides following technical scheme:

Improvement flow passage structure in the die head device, it is characterized in that: the exit of runner connects anti-triangle and distributes district's runner design, it is a summit to be arranged towards feedstock direction on the runner that described anti-triangle distributes the district, the base is towards a triangle buffering area of discharging direction, and the flow channel depth of its trigonum buffering area is more shallow than place, runner bottom.

Described flow channel shape is the T font.

Adopt the T type runner design of said structure to help arranging the matched moulds holding screw, can so that the matched moulds holding screw more near runner, thereby reduce to produce the phenomenon of expecting because of fastening problem with Louing.Anti-triangle distributes the design in district, the flow channel depth of its trigonum buffering area is more shallow than place, runner bottom, can make feed stream when this zone, obtain different dampings, on place, leg-of-mutton base fabric width direction, obtain the uniform fluid that flows, thereby improve the stability of producing, guarantee to produce high-quality product.

Description of drawings

Fig. 1 is a clothes hanger type flow passage structure schematic diagram in the prior art;

Fig. 2 is a flow passage structure schematic diagram of the present invention;

Fig. 3 is the structural representation of die head device of the present invention;

Fig. 4 is an I place partial enlarged drawing among Fig. 3.

The specific embodiment

As shown in Figure 1, present used production plastic plate, film extruding production line, form by extruder and composite membrane head former, different materials is combined, every layer thickness is set as requested, runner in the die head device is a clothes hanger type runner 1 ' distribute district's ' 2 Combination Design with flat face, it is just easier of flowing not as T type flow passage that such design is arranged at the holding screw on runner both sides, be big that the distance shown in the L2 can be than the distance shown in the L1 among Fig. 2, be unfavorable for sealing.

As Fig. 2,3, shown in 4, be the die head device with the design of improvement flow passage structure of the present invention, form by upper die body 3 and lower mold body 4, both are fastening by matched moulds holding screw 5, form inner die cavity 6 between upper die body 3 and the lower mold body 4, has runner 1 in the die cavity, as shown in Figure 2, runner 1 is all identical straight runner of the depth in die cavity, runner 1 global shape is the T font, the exit of runner 1 connects anti-triangle and distributes district's 2 runners design, it is a summit 24 to be arranged towards feedstock direction on the runner 1 that described anti-triangle distributes district 2, base 23 is towards a triangle buffering area 21 of discharging direction, its trigonum buffering area 21 is higher than runner 1 bottom, 22 places are the side runner that anti-triangle distributes district 2, wherein the flow channel depth in 21 zones is more shallow than 22 places, can make feed stream when this zone, obtain different dampings, help fluid uniformly past both sides branch in runner like this, guaranteeing distributing the fluid at 23 places, base in district 21 to flow evenly at anti-triangle on the fabric width direction, thereby the state when guaranteeing that fluid flows out die head is uniform.

Claims

1. the improvement flow passage structure in the die head device, it is characterized in that: the exit of runner connects anti-triangle and distributes district's runner, it is a summit to be arranged towards feedstock direction on the runner that described anti-triangle distributes the district, the base is towards a triangle buffering area of discharging direction, and the flow channel depth of its trigonum buffering area is more shallow than place, runner bottom.

2. the improvement flow passage structure in the die head device as claimed in claim 1 is characterized in that: described flow channel shape is the T font.