CN201604284U

CN201604284U - Double-material three-runner coextrusion sheet extrusion die

Info

Publication number: CN201604284U
Application number: CN2010201251998U
Authority: CN
Inventors: 柯友军; 何浩
Original assignee: Huangshi Hongda Plastic Mould Co Ltd
Current assignee: Huangshi Hongda Plastic Mould Co Ltd
Priority date: 2010-02-11
Filing date: 2010-02-11
Publication date: 2010-10-13
Anticipated expiration: 2020-02-11

Abstract

The utility model relates to a double-material three-runner coextrusion sheet extrusion die, which mainly consists of a combination die body and a main material tube. The inside of the combination die body is provided with a coat-hanger main material runner and a molding runner. The double-material three-runner coextrusion sheet extrusion die is characterized in that a distributor is additionally arranged between the main material tube and the combination die body; the inside of the distributor is provided with a main material feeding runner and upper and lower fabric feeding runners; feed ends of the two fabric feeding runners are externally connected with a fabric feeding tube after being converged; the inside of the combination die body is additionally provided with two layers of upper and lower coat-hanger fabric runners; and the main material feeding runner in the distributor is communicated with the coat-hanger main material runner in the combination die body, while the two fabric feeding runners thereof are respectively communicated with the two layers of coat-hanger fabric runners in the combination die. The utility model solves the problems of undesirable surface hardness and smooth finish of PVC foaming sheets produced by the existing sheet extrusion die and is particularly suitable to produce wide sheets and sheet products with high requirements for the hardness of the upper and lower surfaces and the smooth surfaces.

Description

Extra quality three runner co-extrusion sheet material extrusion dies

(1) technical field: the utility model relates to wood and moulds processing mold, especially a kind of extra quality three runner co-extrusion sheet material extrusion dies.

(2) background technology: most of board mills of domestic production are nowadays all just produced the PVC foaming plate, for improving the case hardness and the fineness of PVC foaming plate, existing method is to handle by skinning, but effect is not ideal enough, and the case hardness of product and fineness can't reach customer requirements.There is producer to attempt to add the hard PVC material moulding on the surface of PVC foaming plate for this reason.Prior art is that hard PVC and common PVC material are carried out co-extrusion before entering head, and it is exactly that the flow aspect is uncontrollable that this mode has a very big defective, coextruded layer in uneven thickness, and moulding is nonstandard.

(3) summary of the invention: the purpose of this utility model will address the above problem exactly, proposes a kind ofly can produce the extra quality three runner co-extrusion sheet material extrusion dies that case hardness height, wide plate that fineness is good are used.

Concrete scheme of the present utility model is: improve at existing wide plate rack-style runner extrusion die, it mainly is made up of combination die body and major ingredient pipe, design has rack-style major ingredient runner and molding runners in the combination die body, it is characterized in that: between major ingredient pipe and combination die body, have additional distributor, be provided with major ingredient feed runner and upper and lower two lining feed runners in distributor, two lining feed streams road feed ends compile the external lining feeder sleeve in back; And have additional upper and lower two-layer rack-style lining runner in the combination die body, form upper, middle and lower-ranking rack-style runner with rack-style major ingredient runner, three runners all are communicated with molding runners; Major ingredient feed runner in the described distributor is communicated with the rack-style major ingredient runner of combination in the die body, two lining feed runners then respectively with make up die body in two-layer rack-style lining runner be communicated with.

The die body of combination described in the utility model is by cope match plate, down template and the upper and lower die lip that is contained in upper and lower template front end are formed, and is provided with the adjusting die lip at the front end of last die lip.

Rack-style major ingredient runner in the die body of combination described in the utility model is to be opened in upper and lower template junction, and upper strata rack-style lining runner is to be opened in the cope match plate, and lower floor's rack-style lining runner is to be opened in down in the template.

The utility model modern design, structure is ingenious, hard PVC can be compounded in the surface of PVC foaming plate, one-shot forming, uniform feeding, the product that adopts this mould to produce, size is accurate, and wall thickness is even, and intensity is good, and particularly case hardness height, fineness are good.Be particularly suitable for producing PVC wood and mould integrate plate door and bigger sheet slab products.

(4) description of drawings:

Fig. 1 is a general structure front view of the present utility model;

Fig. 2 is a general structure vertical view of the present utility model;

Fig. 3 is the perspective view of distributor;

Fig. 4 is the front view of distributor;

Fig. 5 is the left view of distributor;

Fig. 6 is the vertical view of distributor.

Among the figure: 1-major ingredient pipe, 2-distributor, 3-upper strata rack-style lining runner, 4-rack-style major ingredient runner, 5-cope match plate, the last die lip of 6-, 7-regulates die lip, 8-molding runners, die lip under the 9-, template under the 10-, 11-lower floor rack-style lining runner, 12-lining feeder sleeve, 13-major ingredient feed runner, 14-upper fabric feed runner, 15-lower fabric feed runner.

(5) specific embodiment:

Referring to Fig. 1, Fig. 2, the utlity model has major ingredient pipe 1 and combination die body, this combination die body is by cope match plate 5, following template 10 and being contained in, following template 5, on 10 front ends, following die lip 6,9 form, the front end of last die lip 6 is provided with regulates die lip 7, and design has rack-style major ingredient runner 4 and molding runners 8 in the combination die body, particularly: between major ingredient pipe 1 and combination die body, have additional distributor 2 (referring to Fig. 3-6), being provided with major ingredient feed runner 13 in distributor 2 reaches, following two

lining feed runners

14,15, two lining feed streams road feed ends compile the external lining feeder sleeve 12 in back; And have additional upper and lower two-layer rack-

style lining runner

3,11 in the combination die body, form upper, middle and lower-ranking rack-style runner with rack-style major ingredient runner, three runners all are communicated with molding runners 8; Major ingredient feed runner 13 in the described distributor 2 is communicated with the rack-style major ingredient runner 4 of combination in the die body, two

lining feed runners

14 and 15 respectively with the combination die body in about two-layer rack-

style lining runner

3 and 11 be communicated with.

Rack-style major ingredient runner 4 in the described combination die body is to be opened in upper and lower template junction, and upper strata rack-style lining runner 3 is to be opened in the cope match plate 5, and lower floor's rack-style lining runner 11 is to be opened in down in the template 10.

Claims

1. extra quality three runner co-extrusion sheet material extrusion dies, mainly form by combination die body and major ingredient pipe, design has rack-style major ingredient runner and molding runners in the combination die body, it is characterized in that: between major ingredient pipe and combination die body, have additional distributor, be provided with major ingredient feed runner and upper and lower two lining feed runners in distributor, two lining feed streams road feed ends compile the external lining feeder sleeve in back; And have additional upper and lower two-layer rack-style lining runner in the combination die body, form upper, middle and lower-ranking rack-style runner with rack-style major ingredient runner, three runners all are communicated with molding runners; Major ingredient feed runner in the described distributor is communicated with the rack-style major ingredient runner of combination in the die body, two lining feed runners then respectively with make up die body in two-layer rack-style lining runner be communicated with.

2. extra quality three runner co-extrusion sheet material extrusion dies according to claim 1 is characterized in that: described combination die body is by cope match plate, down template and the upper and lower die lip that is contained in upper and lower template front end are formed, and is provided with the adjusting die lip at the front end of last die lip.

3. extra quality three runner co-extrusion sheet material extrusion dies according to claim 2, it is characterized in that: the rack-style major ingredient runner in the combination die body is to be opened in upper and lower template junction, upper strata rack-style lining runner is to be opened in the cope match plate, and lower floor's rack-style lining runner is to be opened in down in the template.