CN2399189Y

CN2399189Y - Mould for prodn. of moulded polyurethane

Info

Publication number: CN2399189Y
Application number: CN 99254537
Authority: CN
Inventors: 胡文祥; 陈永丰
Original assignee: CHANGTAIXING SILICA GEL Co Ltd SHENZHEN CITY
Current assignee: CHANGTAIXING SILICA GEL Co Ltd SHENZHEN CITY
Priority date: 1999-11-26
Filing date: 1999-11-26
Publication date: 2000-10-04
Anticipated expiration: 2009-11-26

Abstract

The utility model relates to a mould for producing polyurethane moulded articles. The mould for producing polyurethane moulded articles is characterized in that an upper mould 1 and a lower mould 2 are respectively provided with an upper mould frame 1-3 and a lower mould frame 2-3 for fixing and supporting the mould, and the middle parts of the upper mould frame 1-3 and the lower mould frame 2-3 are respectively welded with a drilling plate 1-2 and a drilling plate 2-2. A silicon rubber upper inner mould 1-1 and a silicon rubber lower inner mould 2-1 which are copied with product samples and are solidified and moulded are arranged in the upper and the lower mould frames. The mould which uses the silicon rubber as the inner mould has the advantages of short preheating time and slow heat radiation without heating on a production line; when PU materials are foamed, a foaming line can not be formed; the silicon rubber moulds are not pasted with the PU materials without spraying demoulding agents in the process of production; the utility model shortens production processes, enhance the quality of products, lowers production cost and has the advantages of convenient mould production and low cost.

Description

Be used to produce the mould of polyurethane article shaped

The utility model belongs to the mould that the production article shaped is used, and is specifically related to be used to produce the mould of polyurethane article shaped.

The existing mould that is used to produce polyurethane (PU) forming materials thing is metal species or animi resin class mould mostly.Such mould, because the very easily heat conduction greatly again of mold materials thermal capacitance, so when being used to produce PU forming materials thing, preheating time is long, and rapid heat dissipation, so that in operating process, also need continuous heat tracing; When adopting this mould to produce PU forming materials thing, the PU material of viscosity very easily with the mould adhesion, the essential releasing agent that sprays can the demoulding, but releasing agent will inevitably remain on the finished product, not only reduce the quality of product, and cause difficulty as postprocessing working procedures such as spraying paint, bonding, and not only lose time, also increase many costs; In addition, use this metal species and resinae mould, when the PU material foams, can form a foaming line in the product outer, influence speciously, increased operation.

The purpose of this utility model is the deficiency at above-mentioned metal species or animi resin class mould, provides a kind of good in thermal property to be easy to the mould that is used to produce polyurethane (PU) article shaped of the demoulding again.

The mould that is used to produce the polyurethane article shaped of the present utility model, comprise upper die and lower die, upper die and lower die are connected with each other by hinge and are clamped together by the anchor clamps fastening, it is characterized in that described upper die and lower die each have one and are used for fixing framed with supporting mould, the silicon rubber internal mold that has duplicated the product sample that in framed centre is welded with an intermediate interlayer--perforated plate, is framed, is curing molding.

The general iron plates of adopting of framed and perforated plate more.

Of the present utility model this with silicon rubber be internal mold, produce the mould of polyurethane article shaped, make also very convenient.Usually respectively weld a perforated plate in the upper and lower framed centre of metal, the hard rubber sheet that is fixed with the product sample is placed on upper and lower framed centre, by anchor clamps low mold frame and last framed fastening are clamped together, turn over turnback, make the low mold frame that the product sample is housed last, go up framedly down, pour and fill up the liquid silastic for preparing behind the curing agent into low mold frame through perforated plate, treat promptly to form after the silicon rubber sclerosis in the low mold frame and duplicate the counterdie of product sample moulding; Turn over turnback again, go up framed last, low mold frame is unclamped anchor clamps down, opens framed, after taking out hard rubber sheet, once more low mold frame and last framed fastening are clamped together by anchor clamps, pour into and fill up through perforated plate and go up framedly, treat promptly to form patrix after the silicon rubber sclerosis in framed preparing liquid silastic behind the curing agent, take out the product sample in the counterdie, promptly form the mould of replicated product sample.

Adopting of the present utility model is mould internal mold, that produce PU forming materials thing with silicon rubber, because the good hot property and the good temperature tolerance of silicon rubber are used to make mould, preheating time is short, heat radiation is slow, can keep certain mould temperature, needn't heat on streamline.When the PU material foams, can not form foaming line yet; Especially, the mould and the not adhesion mutually of PU material that adopt silicon rubber to make, so needn't spray releasing agent in process of production, the a lot of problems that adopt releasing agent to cause have been avoided, shorten production process, improved the quality of product, reduced production cost, and it is also very convenient to make mould, and cost is also low.Owing to also be provided with metal edge frame outside the silicon rubber internal mold, therefore, although the blow pressure of PU material is big, mould can not produce distortion yet.

Below in conjunction with accompanying drawing mould that is used to produce the polyurethane article shaped of the present utility model and preparation method thereof is described further:

Fig. 1 a is the mould that is used to produce the polyurethane article shaped of the present utility model, the structural representation under opening (front view).

Fig. 1 b is the mould that is used to produce the polyurethane article shaped of the present utility model, the structural representation under opening (vertical view).

Fig. 2 a is the last framed structural representation (vertically analysing and observe front view) that is used to produce the mould of polyurethane article shaped of the present utility model.

Fig. 2 b is the last framed structural representation (vertical view) that is used to produce the mould of polyurethane article shaped of the present utility model.

Fig. 2 c is the last framed structural representation (vertically analysing and observe side view) that is used to produce the mould of polyurethane article shaped of the present utility model.

Fig. 3 a is the structural representation (vertically analysing and observe front view) of the low mold frame of the mould that is used to produce the polyurethane article shaped of the present utility model.

Fig. 3 b is the structural representation (vertical view) of the low mold frame of the mould that is used to produce the polyurethane article shaped of the present utility model.

Fig. 3 c is the structural representation (vertically analysing and observe side view) of the low mold frame of the mould that is used to produce the polyurethane article shaped of the present utility model.

Fig. 4 is the intermediate interlayer of upper and lower mould--the structural representation of perforated plate.

As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, the mould that is used to produce the polyurethane article shaped of the present utility model, comprise patrix 1 and counterdie 2, patrix 1 and counterdie 2 are connected with each other by hinge 3 and are clamped together by anchor clamps 4 fastenings, it is characterized in that described patrix 1 and counterdie 2 each have a last framed 1-3 and a low mold frame 2-3 who is used for fixing with supporting mould, in the middle of last framed 1-3 and low mold frame 2-3, respectively be welded with an intermediate interlayer--perforated plate 1-2 and perforated plate 2-2, last, internal mold 1-1 and core insert 2-1 on the silicon rubber that has duplicated the product sample that is curing molding in the low mold frame.

Claims

1. mould that is used to produce the polyurethane article shaped, comprise patrix (1) and counterdie (2), patrix (1) and counterdie (2) are connected with each other by hinge (3) and are clamped together by anchor clamps (4) fastening, it is characterized in that described patrix (1) and counterdie (2) each have last framed (1-3) and a low mold frame (2-3) that is used for fixing with supporting mould, in the middle of last framed (1-3) and low mold frame (2-3), respectively be welded with an intermediate interlayer--perforated plate (1-2) and perforated plate (2-2), last, internal mold (1-1) and core insert (2-1) on the silicon rubber that has duplicated the product sample that is curing molding in the low mold frame.