CN1861373A

CN1861373A - Multicolor rubber molding method

Info

Publication number: CN1861373A
Application number: CN 200610035686
Authority: CN
Inventors: 蔡忠益
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-30
Filing date: 2006-05-30
Publication date: 2006-11-15

Abstract

The invention relates to a multicolor rubber molding method, wherein a molding tool comprises an upper mold and a lower mold, the lower mold is provided with an in-mold cavity, and the in-mold cavity is provided with a bottom layer and a top layer; the method is characterized in that: it comprises the following steps: a. preparing liquid rubber, wherein the liquid rubber comprises rubber, a vulcanizing agent, a volatile agent, pigment and the like; b. injecting the liquid rubber into the bottom layer of the in-mold cavity of the lower mold; c. heating the liquid rubber to form a rubber layer attached to the inner wall of the bottom layer of the cavity in the mold; d. placing solid base rubber into the top layer of the inner cavity of the lower die, and heating to cure the solid base rubber; e. covering the upper die, and simultaneously heating and pressurizing to tightly combine the base rubber and the rubber layer; f. taking out the finished product. Because each character and pattern are independently formed by the liquid rubber, the invention is suitable for products with smaller characters and finer patterns, and simultaneously, the manufactured products contain a plurality of colors, so that the products are more attractive.

Description

A kind of multiple-coloured rubber formation method

Technical field:

The present invention relates to the rubber product forming technical field, refer in particular to a kind of multiple-coloured rubber formation method.

Background technology:

Past, in order to make the trade mark sheet with rubber, generally in the following way: at first solid-state and painted block rubber is put into a mould, pressurization then, it is squeezed in the bottom in cave in the mould, then a solid-state substrate rubbers is put into the top layer in mould cave, utilized hot moulding that two rubber-mouldings are combined at last, so just can obtain one and have formed by this tinted rubber, as to have literal or pattern trade mark sheet.

Because what said method adopted is that the solid rubber of monoblock is processed, so produced product also only has solid color, and the literal of institute's moulding and the lines of pattern also can be thicker; So above-mentioned processing method can't mold literal, the pattern with multiple color, be not suitable for less font of moulding or trickle pattern yet, in addition, manufacturing process is difficulty comparatively, and efficient is not good.

Summary of the invention:

The objective of the invention is provides a kind of multiple-coloured rubber formation method at the deficiencies in the prior art, and it can produce literal, the pattern with multiple color, and is applicable to less font and trickle pattern.

For achieving the above object, the present invention adopts following technical scheme: its shaping jig includes upper and lower mould, and bed die has cave in the mould, and the cave has bottom and top layer in this mould; It is characterized in that: it comprises the following step:

A, preparation liquid rubber, this liquid rubber is become to be grouped into by rubber, vulcanizing agent, volatilizer and pigment etc.;

B, this liquid rubber injected the bottom in cave in the mould of bed die;

C, heat this liquid rubber, it is formed be attached at the rubber layer on the bottom inwall of cave in this mould;

D, solid substrate rubber is put into the top layer in bed die mould cave, heating makes its slaking;

E, cover mold, heating pressurization is simultaneously combined closely this substrate rubbers and rubber layer;

F, taking-up finished product.

After the present invention adopts said method, because each literal, pattern are independently by the liquid rubber moulding, so product less applicable to font and that pattern is trickleer, simultaneously, can make the product that produces comprise multiple color, and then make product have more attractability according to different demands.

Description of drawings:

The present invention is further illustrated below in conjunction with accompanying drawing:

Fig. 1 is a bed die cutaway view of the present invention;

Fig. 2 is the schematic diagram that injects liquid rubber at bottom shown in Figure 1;

Fig. 3 is to the schematic diagram after the heating of the liquid rubber among Fig. 2;

Fig. 4 closes to process schematic diagram behind the mold;

Fig. 5 is the finished product schematic diagram that processes according to the inventive method;

Fig. 6 is the A-A cutaway view among Fig. 5.

The specific embodiment:

The following stated is an one embodiment of the present invention, does not therefore limit protection scope of the present invention.

See Fig. 1, the applied shaping jig of the present invention includes upper and

lower mould

14,12, and bed die 12 has cave 16 in the mould, and cave 16 has bottom 18 and top layer 20 in this mould; Top layer 20 is actually the indent platform in the bed die 12, the groove of bottom 18 on top layer 20, offering downwards, and each bottom 18 is independent of each other, and has different literal, pattern form.

The present invention comprises the following step:

B, the method for utilizing trace to penetrate with the bottom 18 in cave 16 in the mould of versicolor liquid rubber material 10a, 10b injection bed die 12, are seen shown in Figure 2;

C, heat this liquid rubber, the temperature range of heating is 140-160 ℃, and be 1-2.5 minute heat time heating time, can determine according to the amount of the liquid rubber that is injected, and the time of measuring at most is long, and the time of measuring at least is short; So just can make this liquid rubber reach the amount of cure of about 70%-80%, make its one-step forming just;

In heating process, the volatilizer in the liquid rubber etc. become branch to scatter and disappear, and can form after therefore heating finishes and be attached at the rubber layer 22 on 16 bottoms, 18 inwalls of cave in this mould, see shown in Figure 3;

The thickness of this rubber layer 22 mainly is relevant with the content of the amount of the liquid rubber that is injected, liquid rubber volatilizer, and many more as the amount of liquid rubber, then thickness is big more, and volatilizer is many more, and thickness is more little;

In the process that trace penetrates, may have the bottom 201 that some liquid rubbers dropped in or overflowed cave 16 top layers 20 in this mould, after finishing, heating these residues manually should be removed.

D, solid substrate rubber 24 is put into the top layer 20 in bed die 12 mould caves 16, it is 140-160 ℃ that heating makes its slaking, the temperature range of heating, and be 1.5-2.5 minute heat time heating time;

E, cover mold 14, heating pressurization simultaneously makes this substrate rubbers 24 combine closely with rubber layer 22, sees shown in Figure 4;

F, taking-up finished product.

Fig. 5 is according to the produced finished product 26 of above steps, and it has substrate 28 and some patterns at these substrate 28 upper process, literal 30; See Fig. 6, wherein this substrate 28 is made up of substrate rubbers 24, its shape and lines are determined by 16 top layers 20 of cave in the mould of bed die 12, this literal, pattern 30 are determined by 16 bottoms 18 of cave in the mould of bed die 12, and be made up of substrate rubbers 24 and the rubber layer 22 that is coated on outside the substrate rubbers 24, the color that their color is allocated by liquid rubber is determined.

In the present embodiment, this mulle can be different colors with literal, and each literal also can be different colors, so can make this label have the outward appearance of multicolour, to meet designer's demand, certainly, the color that this pattern is also identical with literal.

Claims

1, a kind of multi-color rubber forming method, its forming tool comprises upper and lower mould, and lower mold has mold cavity, and this mold cavity has bottom layer and top layer; It is characterized in that: it comprises the following steps:

a, prepare liquid rubber, this liquid rubber is made up of components such as rubber, vulcanizing agent, volatile agent and pigment;

b. Inject the liquid rubber into the bottom layer of the mold cavity of the lower mold;

c. Heating the liquid rubber to form a rubber layer attached to the bottom inner wall of the cavity in the mould;

d. Put the solid base rubber into the top layer of the inner cavity of the lower mold, and heat it to cure it;

e. Cover the upper mold, and heat and pressurize at the same time to make the base rubber and the rubber layer tightly bonded;

f. Take out the finished product.

2. A multi-color rubber molding method according to claim 1, characterized in that the temperature range for heating the liquid rubber is 140-160°C, and the heating time is 1-2.5 minutes.

3. A multi-color rubber molding method according to claim 1, characterized in that: the temperature range for heating the base rubber is 140-160°C, and the heating time is 1.5-2.5 minutes.

4. A multi-color rubber molding method according to claim 1, characterized in that the liquid rubber injected into the bottom layer of the cavity in the mold has different colors.

5. A multi-color rubber molding method according to claim 1, characterized in that the liquid rubber injected into the bottom layer of the cavity in the mold has different colors.

6. A multi-color rubber molding method according to claim 1, characterized in that: after heating the liquid rubber, the bottom layer should be cleaned to remove overflow and residue left on the top layer of the cavity in the mold.

7. A multi-color rubber molding method according to claim 1, characterized in that: the cavity in the mold has multiple independent bottom layers.