CN105922497A

CN105922497A - Process and equipment for producing PU foaming product by embedded silica gel mold

Info

Publication number: CN105922497A
Application number: CN201610453947.7A
Authority: CN
Inventors: 吴国明
Original assignee: XIAMEN NEU CRAFT CO Ltd
Current assignee: XIAMEN NEU CRAFT CO Ltd
Priority date: 2016-06-21
Filing date: 2016-06-21
Publication date: 2016-09-07

Abstract

The invention provides equipment for producing a PU foaming product by an embedded silica gel mold. The equipment comprises an upper mold and a lower mold, and is characterized in that silica gel molds with silica gel materials are placed in mold cavities of the upper mold and the lower mold; and patterns are carved in the surfaces of the silica gel molds. The invention further provides a process for producing the PU foaming product by the embedded silica gel mold through the equipment. The needed patterns are formed in the surface of the foaming product through the patterns carved in the silica gel molds; silica gel is a soft material with a certain hardness and elasticity; the speed of carving the patterns on the silica gel is obviously faster than the speed of carving the patterns on a hard metal material, so that the production efficiency is improved; the patterns carved in the silica gel are clearer in texture, so that products with barb angles can be manufactured, and the defect of only capability of producing products with external angles by a mold with a hard material is broken through; and as the silica gel material is cheap, if the patterns need to be replaced, one silica gel film is only replaced, expensive upper and lower molds have no need to replace, and the cost is largely reduced.

Description

A kind of embedded silica gel mould produces the Processes and apparatus of PU foamed products

Technical field

The invention belongs to the production equipment of PU foamed products, further relate to the production technology of PU foamed products.

Background technology

PU foamed products is widely used in high rebound foam, low resilience is rested the head on, certainly connect skin, imitation wood is hard bubbled, PU On the products such as toy, elastomeric article, footwear material, the most also it is useful in building wall, such as decorative cover Plate, wall image, the heat preserving and insulating material of outer surface of building (or other need the surface of insulation) is foaming Material, thus reach the effect of insulation.

Existing mould is made up of the upper die and lower die that can open and close, and forms die cavity after closing mould, and PU sends out Bubble product is that PU expanded material injects in die cavity, and after closing mould, PU expanded material carries out foamable reaction, To PU foamed products.

The upper die and lower die of current mould are made up of metal or resin, when needs PU foaming product surface has When concaveconvex shape or decorative pattern play decoration function, current method is at metal die or resin die correspondence mould The inner surface in chamber engraves decorative pattern, and after expanded material foaming, the face of foamed products these decorative patterns corresponding is also formed for Effect of decorative patterns.

Current this method, after designing a kind of decorative pattern and being carved on mould, this mould just can only produce With the foamed products of this decorative pattern, design makes new advances after decorative pattern, can only carve one set of die, certain decorative pattern again Not after reproduction, this mold is only given it up, and causes great cost to waste.

And, the man-hour that carved pattern is spent on metal die is longer, and production efficiency is low.

And on hard material mould carved pattern, the foamed products produced can only be external corner, it is impossible to shape Become barb angles effect.

Summary of the invention

The present invention provides a kind of embedded silica gel mould to produce the equipment of PU foamed products, its objective is to solve existing The shortcoming that technology exists, the production efficiency making the PU foamed products of belt surface shape decorative pattern is high, and production cost is low, Pattern forming is effective.

The present invention also provides for the technique that a kind of embedded silica gel mould produces PU foamed products.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of embedded silica gel mould produces the equipment of PU foamed products, and including upper die and lower die, its feature exists In: being shelved with the Silicon moulds of a piece of silica gel material in the die cavity of upper die and lower die, the surface engraving of Silicon moulds has Decorative pattern.

Described Silicon moulds can carve different styles, same set of upper die and lower die can adaptive arbitrarily style and Multiple Silicon moulds of pattern.Namely the foamed products producing different pattern can share same set of upper die and lower die, Only need to change the Silicon moulds of different pattern.

The technique that a kind of embedded silica gel mould produces PU foamed products, it is characterised in that:

A: open upper die and lower die, open die cavity；

B: coat releasing agent in die cavity；

C: shelve the Silicon moulds of the silica gel material being coated with releasing agent in die cavity, Silicon moulds surface engraving has flower Stricture of vagina；

D: pouring foaming material in die cavity；

E: close upper die and lower die, closes die cavity, makes expanded material be reacted to foamed products；

F: open upper die and lower die, takes out Silicon moulds and foamed products；

G: demoulding divided silicon rubber moulding and foamed products, must arrive surface and have the foamed products of decorative pattern；

H: cleaning upper die and lower die, Silicon moulds, remain to reuse.

The invention have benefit that:

The present invention makes foaming product surface form the decorative pattern needed by the decorative pattern of engraving on Silicon moulds, and silica gel is There are certain degree of hardness and elastic soft material, carved pattern on silica gel, it is clear that than existing at hard metal material Upper carved pattern speed improves a lot, and therefore production efficiency improves；On silica gel, carved pattern texture ratio is more visible, Can make the product of barb angles, the mould of breakthrough use hard material can only produce has the product of external corner not Foot；Upper die and lower die material expensive, and silica gel material is cheap, the foamed products that the present invention produces different pattern is permissible Share same set of upper die and lower die, if style to be changed, as long as would changing the original upper die and lower die of a piece of adaptation but carving There is the Silicon moulds of different pattern, it is not necessary to change expensive upper mold lower mold, significantly reduce cost.

Accompanying drawing explanation

The present invention is further described with embodiment below in conjunction with the accompanying drawings.

Fig. 1 is present configuration figure.

Detailed description of the invention

In order to be illustrated more clearly that technical scheme, below by the accompanying drawing used required in describing It is briefly described, it should be apparent that, the accompanying drawing in describing below is only some embodiments of the present invention, For those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to this A little accompanying drawings obtain other embodiment.

The decorative pattern of the present invention refers to the decorative pattern with concaveconvex shape.

As it is shown in figure 1, the present invention includes upper mold 1 and the lower mold 2 of metal material (or resin material), upper mold 1 Hinged with lower mold 2, such that it is able to open and close.The die cavity 3 formed between upper mold 1 and lower mold 2 during use Bottom be shelved with the Silicon moulds 4 of a piece of silica gel material, the surface engraving of Silicon moulds 4 has decorative pattern.

In other embodiments, the variously-shaped multi-disc Silicon moulds through design can be shelved in die cavity 3.

Silicon moulds 4 is the rectangle plates of silica gel material, and its size is adaptive with die cavity 3, in advance at Silicon moulds 4 Upper surface carves out the decorative pattern of the concaveconvex shape of needs.

With following steps production foamed products:

A: open upper mold 1 and lower mold 2, open die cavity 3；

B: coat releasing agent in die cavity 3；

C: shelve the Silicon moulds 4 of the silica gel material being coated with releasing agent, Silicon moulds 4 surface engraving in die cavity 3 There is decorative pattern；

D: pouring foaming material 5 in die cavity 3；

E: upper mold of closing 1 and lower mold 2, close die cavity 3, and expanded material 5 foamable reaction in die cavity 3 expands, It is shaped into decorative pattern shape when running into the decorative pattern on Silicon moulds 4 surface, becomes surface and there is the foaming product of decorative pattern Product；

F: open upper mold 1 and lower mold 2, takes out Silicon moulds 4 and foamed products；

G: demoulding divided silicon rubber moulding 4 and foamed products, must arrive surface and have the foamed products of decorative pattern.

H: cleaning upper mold 1, lower mold 2, Silicon moulds 4, remain to reuse.

Upper mold 1, lower mold 2, Silicon moulds 4 can recycle, when the foamed products producing different decorative pattern Time, it is not necessary to die sinking again, if one new Silicon moulds 4 of engraving, same use original upper mold 1 and under Mould 2 is the most permissible, and the style of Silicon moulds 4 can be ever-changing, various textures, so can reduce producing into This, improve production efficiency.

In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is With the difference of other embodiments, between each embodiment, identical similar portion sees mutually.To institute The described above of disclosed embodiment, makes professional and technical personnel in the field be capable of or uses the present invention.Right The multiple amendment of these embodiments will be apparent from, herein for those skilled in the art Defined General Principle can without departing from the spirit or scope of the present invention, in other embodiments Middle realization.Therefore, the present invention is not intended to be limited to the embodiments shown herein, and be to fit to Principles disclosed herein and the consistent the widest scope of features of novelty.

Claims

1. embedded silica gel mould produces an equipment for PU foamed products, including upper die and lower die, its feature It is: in the die cavity of upper die and lower die, be shelved with the Silicon moulds of a piece of silica gel material, the surface engraving of Silicon moulds There is decorative pattern.

2. the technique that an embedded silica gel mould produces PU foamed products, it is characterised in that:

A: open upper die and lower die, open die cavity；

B: coat releasing agent in die cavity；

D: pouring foaming material in die cavity；

G: demoulding divided silicon rubber moulding and foamed products, must arrive surface and have the foamed products of decorative pattern.

A kind of embedded silica gel mould the most as claimed in claim 2 produces the technique of PU foamed products, and it is special Levy and be: H the most in steps after step G:

H: cleaning upper die and lower die, Silicon moulds, remain to reuse.