CN1082983A

CN1082983A - The manufacture method of plastic composite casing

Info

Publication number: CN1082983A
Application number: CN 92110005
Authority: CN
Inventors: 尤景三
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-22
Filing date: 1992-08-22
Publication date: 1994-03-02

Abstract

A kind of manufacture method of plastic composite casing, it is base material with the thermoplastic, with the long fibre material is reinforcing material, at first the cutting predetermined number be flat stretch the thermoplastic material film of shape and have the long fibre thin plate of predetermined fiber orientation and it is intersected in regular turn be stacked to a laminate with predetermined thickness; Again this laminate is inserted in the mould, and this mold heated to temperature is reached the respectively fusing point of this layer thermoplastic film at least; Then, under this temperature, this laminate is applied predetermined pressure, with so that respectively this layer thermoplastic film fusing and infiltrating between each fibre bundle of each long fibre thin plate layer; At last, cool off this mould, so obtain a complete casing.

Description

The manufacture method of plastic composite casing

The invention relates to the manufacture method of casing, particularly about a kind of manufacture method of thermoplastic plastic composite material casing.

Usually the casing major part of used plastic composite is to make with injection molding method, but according to practical experience, casing is because bulky, difficult manufacturing of shaping dies and molding condition are also difficult to be cooperated, therefore disqualification rate is very high, add its reinforcing material of employed plastic composite and must be short fiber could with the plastic basis material melting mixing with injection moulding, so the finished product made from this kind method is on intensity and bad.

Therefore, main purpose of the present invention is to provide a kind of manufacture method of thermoplastic plastic composite material casing, and it can reduce the disqualification rate of finished product.

Another purpose of the present invention is to provide a kind of manufacture method of thermoplastic plastic composite material casing, it be with long fibre material (being the continuous fiber material) as reinforcing material, so finished product height of on intensity, making of finished product than injection moulding.

Therefore, for achieving the above object, the manufacture method of thermoplastic plastic composite material casing of the present invention, be to be base material with the thermoplastic, with the long fibre material is reinforcing material, at first the cutting predetermined number be flat stretch the thermoplastic film of shape and have the long fibre thin plate of predetermined fiber orientation and it is intersected in regular turn be stacked to a laminate with predetermined thickness; Again this laminate is inserted in the mould, and this mold heated to temperature is reached the respectively fusing point of this layer thermoplastic film at least; Then, under the state of keeping this temperature, this laminate is applied predetermined pressure, use so that each layer thermoplastic film melts and infiltrates between each fibre bundle of each long fibre thin plate layer; At last, after aforementioned step is carried out a scheduled time, cool off this mould, use so that the thermoplastic solidifies of melting so obtains a complete casing.

Enumerate some preferred embodiments of the present invention and conjunction with figs. below and be further described, wherein:

Fig. 1 is the part sectional block diagram of laminate in a preferred embodiment of the present invention;

Fig. 2 is for inserting the male and female intermode with laminate in a preferred embodiment of the present invention and with the cross section view after its closure;

Fig. 3 is the finished product stereogram of a preferred embodiment of the present invention;

Fig. 4 is for inserting laminate in another preferred embodiment of the present invention the cross section view behind the male and female mould, and wherein this laminate lateral surface pastes a resistant to elevated temperatures cushion;

Fig. 5 is for inserting laminate in the another preferred embodiment of the present invention the cross section view behind the male and female mould, and wherein the lateral surface of this laminate is equipped with a resistant to elevated temperatures elasticity bag;

Fig. 6 for the present invention again in the preferred embodiment each thermoplastic film layer of its laminate have the schematic perspective view on the surface that is netted.

Referring to figs. 1 to Fig. 3, be that rectangular and fiber is oriented to 11,13,15 and two of the thermoplastic films of three rectangles in a preferred embodiment of case manufacturing method of the present invention ± 30 ° long fibre thin plate 12,14 intersects in regular turn and is stacked to a rectangular layer plywood 20.Respectively this thermoplastic film 11,13,15 can be made by polyamide (for example nylon), and respectively these long fibre thin plate 12,14 length available are made at 0.1-10m or longer carbon fiber, boron fibre, glass fibre etc.Aforementioned respectively this film and thin plate layer can separately be made again and stack together, and perhaps are affixed on each thermoplastic film's the surface with the long fibre wrapping earlier.

After this laminate 20 is made, it is placed between a male model 31 and the master mold 32.This male model 31 is provided with a rectangle projection 33, and this master mold 32 is provided with a larger-size rectangle recessed portion 34, in order to die cavity 36 corresponding to box shape of formation after the two is closed, and makes this laminate 20 according to these die cavity 36 moulding.

After these male and

female mould

31,32 closures, utilize hydraulic press in different time the two to be applied external pressure, so that the two closing closely together with segmented mode.At the same time, this male and

female mould

31,32 is heated to 220 ℃, with so that each thermoplastic film 11,13,15 be the melting state and infiltrate between each fibre bundle of each long fibre thin plate.

When to this male and female mould after one scheduled time of 31,32 pressurized, heated,,, so, after opening this male and

female mould

31,32, can take out a complete casing 40 with so that be the thermoplastic solidifies of melting state with the two cooling.

Again with reference to considering Fig. 4 and Fig. 5, in another preferred embodiment of manufacture method of the present invention, be before this laminate 20 is not inserted male and

female mould

31,32 as yet, on the rectangle projection 33 of this male model 31, lay a liner 37 that usefulness is high temperature resistant and rubber-like material (as silicon rubber) is made in advance.The body of this male model 31 is provided with an airway 38 and some passages 39 that communicates with this die cavity 36, by this, after this laminate 20 is inserted this die cavity 36, can be in the time of heating, the mode piecewise that increases progressively with pressure with gas-pressurized (shown in Fig. 4 direction of arrow) through this airway 38 and respectively this passage 39 introduce in these die cavitys 36, in order to this liner 37 of ejection and and then urge this laminate 20 so that the thermoplastic of melting can infiltrate between each long fibre bundle more equably.In addition, the also available hollow bag 50 of this liner 37 replaces (as shown in Figure 5), and gas-pressurized is then introduced by the inlet of this bag 50.

In addition, again with reference to figure 6, in a preferred embodiment again of manufacture method of the present invention, each layer

thermoplastic film

51,53,55 can make it have netted surface, in order to quickening the time of its melting, and the ratio that is easy to adjust thermoplastic plastic substrates and long fibre reinforcing material in the laminate 60.

By as can be known aforementioned, manufacture method of the present invention is to adopt press moulding mode, therefore is easy to control on condition of molding, so can reduce the disqualification rate of finished product.Moreover, its finished product be with the long fibre material as reinforcing material, therefore can adopt short fiber on intensity more usually is that the finished product of reinforcing material wants high.And the most important is that according to the finished product that manufacture method of the present invention is made, the laminated number under unit thickness will be more than other manufacture methods, and will be therefore quite sturdy and durable.

Claims

1, a kind of manufacture method of plastic composite casing, it is base material with the thermoplastic, is reinforcing material with the long fibre material, it is characterized in that it comprises the following steps:

A. predetermined number being flat thermoplastic film who stretches shape and long fibre thin plate intersects in regular turn and is stacked to a laminate with predetermined thickness;

B. this laminate is placed between the male and female mould, this male model has a projection, and this master mold has a recessed portion, is used to the die cavity that the two closed back formation one is box shape;

C. closed this male and female mould also clamps the two with the segmentation pressuring method;

D. carry out simultaneously in aforementioned pressurization steps, the temperature of this thermoplastic film layer fusing point heats this male and female mould to be higher than respectively;

E. after abovementioned steps is kept a period of time, cool off this male and female mould and, obtain a complete casing its unlatching.

2, case manufacturing method according to claim 1, wherein can lay a high temperature resistant and rubber-like liner on the plate face of this laminate with respect to this male model projection, this male model then is provided with the vent cap that communicates with this die cavity, this liner of pushing tow in this die cavity is introduced with gas-pressurized in the mode piecewise that increases progressively with pressure when being used to heat, and can infiltrate more equably between each long fibre bundle with the thermoplastic raw material that forces melting.

3, case manufacturing method according to claim 1, wherein can place one high temperature resistant and have an elastic hollow bag in this hot-die cave in advance, when being used to heat, with the mode piecewise that pressure increases progressively gas-pressurized is introduced its inside from the inlet of this hollow bag, the thermoplastic of its melting is infiltrated between each long fibre bundle more equably to urge this laminate.

4, case manufacturing method according to claim 1, wherein this thermoplastic film's surface is netted.

5, case manufacturing method according to claim 1, wherein the outermost layer of this laminate is a thermoplastic film.