CN202922941U

CN202922941U - Complete wrapped co-extrusion flowing channel structure capable of realizing plastic profile extrusion uniformity

Info

Publication number: CN202922941U
Application number: CN2012206386882U
Authority: CN
Inventors: 张文进; 吴翠红; 余云
Original assignee: TONGLING ZONFA TRINITY TECHNOLOGY Co Ltd
Current assignee: TONGLING ZONFA TRINITY TECHNOLOGY Co Ltd
Priority date: 2012-11-28
Filing date: 2012-11-28
Publication date: 2013-05-08
Anticipated expiration: 2022-11-28

Abstract

The utility model discloses a complete wrapped co-extrusion flowing channel structure capable of realizing plastic profile extrusion uniformity. The structure comprises a feeding port (1), a co-extrusion flowing channel (2), a co-extrusion seam (4), a material guide port (5), a U-shaped material guide groove (6), a material storage pond (7), a co-extrusion parallel section (9) and a base material (10), wherein the co-extrusion flowing channel (2), the co-extrusion seam (4) and the base material (10) are sequentially communicated; the co-extrusion flowing channel (2), the material guide port (5), the U-shaped material guide groove (6), the material storage pond (7), the co-extrusion parallel section (9) and the base material (10) are sequentially communicated; a V-shaped material guide groove (3) which can control the flowing speed of materials is formed between the co-extrusion flowing channel (2) and the co-extrusion seam (4); and a baffle block (8) which can control the flowing speed of the materials is arranged between the material storage pond (7) and the co-extrusion parallel section (9). The structure has the beneficial effect that by arranging the baffle block, a grinding layer and the V-shaped material guide groove in the ordinary co-extrusion flowing channel, the effect of a uniform co-extrusion layer is achieved.

Description

A kind of plastic section extruding full co-extruding flow channel structure that coats uniformly that realizes

Technical field

The utility model relates to the extrusion die of plastic material, is specifically related to a kind of plastic section extruding full co-extruding flow channel structure that coats uniformly that realizes.

Background technology

Require the plastic material of co-extrusion material coating for outer surface, namely entirely coat co-extrusion section bar, the coextruded layer thickness of common flow passage is at 0.3mm ~ 0.5mm, usually offer feeding mouth and co-extruding flow channel at the relevant template of the die head of plastics extrusion die, the co-extrusion material is exported after by the co-extrusion machine heating plasticizing, feeding mouth through die head enters co-extruding flow channel, further shunting and plasticizing in co-extruding flow channel, extrude with base-material from the co-extrusion gap and converge, keep extruding from the die head exit end after a segment distance in die head, thereby realize the surperficial co-extrusion of the appearance of plastic material.Common co-extruding flow channel comprises co-extrusion feeding mouth, co-extruding flow channel, U deflector chute, hold the material pond, co-extrusion parallel-segment and co-extrusion gap, and this co-extruding flow channel is difficult to realize section bar coextruded layer uniformity, affects section bar attractive in appearance.

The utility model content

The technical problems to be solved in the utility model is that existing co-extruding flow channel is difficult to realize section bar coextruded layer uniformity, affects section bar attractive in appearance, provides a kind of for this reason and can realize the section bar extrusion full co-extruding flow channel structure that coats uniformly.

the technical solution of the utility model is: a kind of plastic section extruding full co-extruding flow channel structure that coats uniformly that realizes, it comprises feeding mouth, co-extruding flow channel, the co-extrusion gap, material guide port, the U deflector chute, hold and expect the pond, co-extrusion parallel-segment and base-material, described co-extruding flow channel, co-extrusion gap and base-material are communicated with successively, co-extruding flow channel, material guide port, the U deflector chute, hold and expect the pond, co-extrusion parallel-segment and base-material are communicated with successively, be provided with the V-arrangement deflector chute that to control material flow between described co-extruding flow channel and co-extrusion gap, described holding between material pond and co-extrusion parallel-segment is provided with the choked flow island that can control material flow.

The further improvement of such scheme is to be provided with the mill layer that can control material flow between described co-extrusion parallel-segment and base-material.

the beneficial effects of the utility model are that the choked flow island is set in common co-extruding flow channel, mill layer and V-arrangement deflector chute, choked flow island and mill layer can be shunted the co-extrusion material that a part enters from feeding mouth, the V-arrangement deflector chute can be controlled separately the co-extrusion material that a part of feeding mouth enters, the coextruded layer of all faces is all controlled separately, too much with co-extrusion material in the middle of preventing, cause the local coextruded layer of section bar blocked up, the coextruded layer thickness that requires according to section bar simultaneously, the degree of depth and the thickness of mill layer and the size of V-arrangement deflector chute of suitable design choked flow island runner, and, can be according to the die debugging result, by adjustment choked flow island, mill layer and V-arrangement deflector chute, to reach the uniform effect of coextruded layer.

Description of drawings

Fig. 1 is the utility model schematic diagram;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the B-B cutaway view of Fig. 1;

In figure, 1, feeding mouth, 2, co-extruding flow channel, 3, the V-arrangement deflector chute, 4, co-extrusion gap 5, material guide port, 6, the U deflector chute, 7, hold the material pond, 8, choked flow island 9, co-extrusion parallel-segment, 10, base-material, 11, the mill layer.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described further.

as Fig. 1, Fig. 2, shown in Figure 3, embodiment 1 comprises feeding mouth 1, co-extruding flow channel 2, co-extrusion gap 4, material guide port 5, U deflector chute 6, hold and expect pond 7, co-extrusion parallel-segment 9 and base-material 10, described co-extruding flow channel 2, co-extrusion gap 4 and base-material 10 are communicated with successively, co-extruding flow channel 2, material guide port 5, U deflector chute 6, hold and expect pond 7, co-extrusion parallel-segment 9 and base-material 10 are communicated with successively, be provided with the V-arrangement deflector chute 3 that to control material flow between described co-extruding flow channel 2 and co-extrusion gap 4, embodiment 1 can be provided with the choked flow island 8 that can control material flow holding between material pond 7 and co-extrusion parallel-segment 9, the choked flow island can be a convex structure.

Further, on the basis of embodiment 1, be provided with the mill layer 11 that to control material flow and consist of embodiment 2 between co-extrusion parallel-segment 9 and base-material 10.

The effect of mill layer 11 is to stop material vertically to enter base-material 10, and avoiding the runner local velocity, too fast to cause section bar to form inhomogeneous, and the shape of mill layer can be regular shape or irregular projection.

The utility model is by arranging choked flow island 8, and mill layer 11 and the balanced flowpath pressure of V-arrangement deflector chute 3 and material Flow Velocity are realized the full coating co-extruding flow channel of even co-extrusion.

Material enters from feeding mouth 1, converge through V-arrangement deflector chute 3, co-extrusion gap 4 and base-material 10 successively by co-extruding flow channel 2 on the one hand, on the one hand by co-extruding flow channel 2, enter material guide port 5, U deflector chute 7, choked flow island 8, co-extrusion parallel-segment 9, mill layer 11 and converge with base-material 10.Can control the flow velocity of material due to V-arrangement deflector chute 3, choked flow island 8 and mill layer 11, balanced flowpath pressure is effectively controlled coextruded layer thickness in 0.7mm ~ 1.5mm scope, therefore is achieved even co-extrusion.

The utility model can realize that co-extrusion pawl mouth is all the co-extrusion material, and this flow passage structure can design as required on any template of extrusion die.

Claims

1. can realize the plastic section extruding full co-extruding flow channel structure that coats uniformly for one kind, it comprises feeding mouth (1), co-extruding flow channel (2), co-extrusion gap (4), material guide port (5), U deflector chute (6), hold and expect pond (7), co-extrusion parallel-segment (9) and base-material (10), described co-extruding flow channel (2), co-extrusion gap (4) and base-material (10) are communicated with successively, co-extruding flow channel (2), material guide port (5), U deflector chute (6), hold and expect pond (7), co-extrusion parallel-segment (9) and base-material (10) are communicated with successively, it is characterized in that being provided with between described co-extruding flow channel (2) and co-extrusion gap (4) the V-arrangement deflector chute (3) that can control material flow, described holding between material pond (7) and co-extrusion parallel-segment (9) is provided with the choked flow island (8) that can control material flow.

2. a kind of plastic section extruding full co-extruding flow channel structure that coats uniformly that realizes as claimed in claim 1, is characterized in that being provided with between described co-extrusion parallel-segment (9) and base-material (10) the mill layer (11) that can control material flow.