CN101289004A - EVA forming method and die structure - Google Patents
EVA forming method and die structure Download PDFInfo
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- CN101289004A CN101289004A CNA2007100978141A CN200710097814A CN101289004A CN 101289004 A CN101289004 A CN 101289004A CN A2007100978141 A CNA2007100978141 A CN A2007100978141A CN 200710097814 A CN200710097814 A CN 200710097814A CN 101289004 A CN101289004 A CN 101289004A
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Abstract
The invention relates to an EVA shaping method and a die structure thereof. The method comprises four steps of an emitting shaping step, a die exchanging step, a thermosetting shaping step as well as a finished product material taking and die offset step; while a die of the invention comprises a first die and a second die; the lateral forms at the same side between the first die and the second die can be exchanged. The invention utilizes the steps and the dies to lead the material pieces with two different material characteristics to be respectively emitted and shaped in the two dies and then to be thermally melted and jointed in one die to be solidified and shaped, thus achieving the goal that one EVA finished product has two material characteristics.
Description
Technical field
The present invention is forming method and the mould structure of a kind of EVA, is meant that especially a kind of finished product has forming method and the mould structure of the EVA of two kinds of material behaviors.
Background technology
EVA is the abbreviation of ethylene-vinyl acetate co-polymer, often is used in CRUX product (as the sole of handle, protector and sport footwear and playshoes etc.), medical equipment (as buffering decompression cushion, prosthetic socket and correct pad etc.), sports equipment (as the plate of swimming, protective equipment and anticollision gear etc.) and general industry aspects such as (as tire and fenders etc.);
But in the past in the flow process of an EVA finished product of moulding, a kind of material behavior of this EVA finished product tool, if this EVA finished product wants to have two kinds of material behaviors, just must be first after two of moulding have the materials and parts of homogenous material characteristic respectively with two groups of moulds, again two materials and parts are engaged, just can finish an EVA finished product with two kinds of material behaviors, equal to carry out twice and make engineering, rather trouble is bothersome, if can in the engineering of producing once, finish EVA finished product with two kinds of material behaviors, certainly will be able to save Production Time, also more can be lifted at the competitiveness of industry.
Creator of the present invention is the research of target input to mold the EVA finished product with two kinds of material behaviors in the engineering of producing once just, and then develops forming method and the mould structure of a kind of EVA.
Summary of the invention
The object of the invention is to utilize four steps, so that a kind of forming method that molds a kind of EVA with two kinds of material behavior finished products in the engineering of producing once to be provided.
Another purpose of the present invention is to utilize one first mould and one second mould that can exchange with side form, so that a kind of mould structure that molds a kind of EVA with two kinds of material behavior finished products in the engineering of producing once to be provided.
To achieve these goals, the technical scheme that is adopted is:
The forming method of a kind of EVA comprises the following step:
A. ejection formation step, ejection formation one first materials and parts and one second materials and parts respectively in second counterdie of first patrix of one first mould and one second mould, and these first materials and parts and this second materials and parts material behavior are different;
B. mould exchange step, exchange first patrix of this first mould and second patrix of this second mould, and allow second patrix of this second mould and first counterdie of this first mould cover, and allow first patrix of this first mould and second counterdie of this second mould cover, the applying and first materials and parts of making way for this first patrix contact with second materials and parts that are positioned at this second counterdie;
C. the thermoset forming step to these first materials and parts and the heating of this second materials and parts, makes these first materials and parts engage and curing molding one EVA finished product with this second materials and parts hot melt; And
D. finished product takes out and the mould reset process, this EVA finished product is taken out, and exchange this first patrix and this second patrix once more, and this two patrix is resetted.
In the ejection formation step described in the present invention, the color of these first materials and parts and these second materials and parts is different.
The mould structure of the employed EVA of forming method of EVA described in the present invention, it comprises one first mould and one second mould, this first mould is become by one first patrix and one first lower module, this first patrix also has one first die cavity, this second mould is become by one second patrix and one second lower module, this second counterdie has one second die cavity, and this first mould is connected with a drive unit respectively with this second mould, and this drive unit also can drive second patrix exchange of first patrix and this second mould of this first mould.
Drive unit described in the present invention is with hydraulic pressure, air pressure, connecting rod, slide rail or merge preceding method to drive this first mould and this second mould.
The forming method of a kind of EVA comprises the following step:
A. ejection formation step, ejection formation one first materials and parts and one second materials and parts respectively in second counterdie of first patrix of one first mould and one second mould, and these first materials and parts and this second materials and parts material behavior are different;
B. mould exchange step, exchange first counterdie of this first mould and second counterdie of this second mould, and allow second patrix of this second mould and this first mould first counterdie and close, and allow first patrix of this first mould and this second mould second counterdie and close applying and first materials and parts of making way for this first patrix contact with second materials and parts that are positioned at this second counterdie;
C. the thermoset forming step to these first materials and parts and the heating of this second materials and parts, makes these first materials and parts engage and curing molding one EVA finished product with this second materials and parts hot melt; And
D. finished product takes out and the mould reset process, this EVA finished product is taken out, and exchange this first counterdie and this second counterdie once more, and this two counterdie is resetted.
In the ejection formation step described in the present invention, the color of these first materials and parts and these second materials and parts is different.
The mould structure of the employed EVA of forming method of EVA described in the present invention, comprise one first mould and one second mould, this first mould is become by one first patrix and one first lower module, this first patrix also has one first die cavity, this second mould is become by one second patrix and one second lower module, this second counterdie has one second die cavity, and this first mould is connected with a drive unit respectively with this second mould, and this drive unit also can drive second counterdie exchange of first counterdie and this second mould of this first mould.
Drive unit described in the present invention is with hydraulic pressure, air pressure, connecting rod, slide rail or merge preceding method to drive this first mould and this second mould.
The forming method of EVA of the present invention, it comprises ejection formation step, mould exchange step, thermoset forming step and finished product and gets four steps such as material and mould reset process, wherein:
A. ejection formation step is different materials and parts of ejection formation two material behaviors respectively in the counterdie of the patrix of one first mould and one second mould;
B. mould exchange step is the same side form of this first mould of exchange and this second mould, lays respectively at the applying that contacts with two materials and parts of second lower mould of this first upper mould and allow;
C. thermoset forming step is that to make its thermal welding merge curing molding to this two materials and parts heating be the EVA finished product; And
D. finished product is got material and mould reset process, is after the EVA finished product after this two materials and parts thermosetting is taken out, and exchanges once more with side form this two mould is resetted;
And its mould comprises one first mould and one second mould, this first mould is become by one first patrix and one first lower module, this first patrix also has one first die cavity, this second mould is become by one second patrix and one second lower module, this second counterdie has one second die cavity, and the same side form of this first mould and this second mould can exchange in displacement;
Therefore can learn just by aforementioned that mat method of the present invention can be made in the engineering in one and be molded the EVA finished product with two kinds of material behaviors, more can save Production Time.
Relevant the present invention is for reaching above-mentioned purpose and feature, the technology that is adopted, means and other effect, enumerate embodiment and cooperate graphic detailed description as after, believe purpose of the present invention, feature and other advantage, when can by one deeply and concrete understanding.
Beneficial effect of the present invention is: the present invention is forming method and the mould structure of a kind of EVA, it comprises the ejection formation step, the mould exchange step, thermoset forming step and finished product are got four steps such as material and mould reset process, and its mould comprises one first mould and one second mould, and the same side form of this first mould and this second mould can exchange, utilize those steps and mould, after allowing the different materials and parts of two kinds of material behaviors respectively at ejection formation in the two molds, hot melt engages and curing molding in a mould again, and reaches the purpose that has two kinds of material behaviors in the EVA finished product.
Description of drawings
The mould schematic diagram that Fig. 1 embodiment of the invention is used.
The schematic diagram of Fig. 2 embodiment of the invention moulding first materials and parts and second materials and parts.
Fig. 3 embodiment of the invention exchanges the schematic diagram of two upper moulds.
The schematic diagram of Fig. 4 embodiment of the invention thermoset forming EVA finished product.
The schematic diagram that Fig. 5 embodiment of the invention taking-up EVA finished product and two upper moulds reset.
Schematic diagram after Fig. 6 embodiment of the invention two upper moulds reset.
The flow chart of Fig. 7 embodiment of the invention.
Fig. 8 embodiment of the invention mould ejection formation materials and parts integral body is the schematic diagram of same material characteristic.
[primary clustering symbol description]
" the present invention "
First mould, 10 first patrixes 11
First counterdie, 12 first die cavitys 13
Second mould, 20 second patrixes 21
Second counterdie, 22 second die cavitys 23
The first materials and parts X, the second materials and parts Y
Drive unit A EVA finished product Z
Counterdie 14 patrixes 24
The 3rd materials and parts X ' the 4th materials and parts Y '
The specific embodiment
The forming method of EVA of the present invention, embodiment such as Fig. 1 are to shown in Figure 6, flow chart then as shown in Figure 7, it comprises four steps, and be used one first mould 10 shown in Figure 1 and one second mould 20, this first mould 10 is made up of one first patrix 11 and one first counterdie 12, this first patrix 11 also has one first die cavity 13, this second mould 20 also is made up of one second patrix 21 and one second counterdie 22, this second counterdie 22 has one second die cavity 23, and this first mould 10 is connected with a drive unit A respectively with this second mould 20 and is driven by it, and this drive unit A drives the method for this first mould 10 and this second mould 20 and can be hydraulic pressure, air pressure, method such as connecting rod or slide rail drives, or the driving method of aforementioned merging use, because this drive unit A is the present stage technology generally known of industry, therefore repeat no more in this, and four steps of the present invention are:
A. ejection formation step, the first materials and parts X of ejection formation one homogenous material characteristic and the second materials and parts Y of a homogenous material characteristic respectively in second die cavity 23 of first die cavity 13 of this first mould 10 and this second mould 20, and this first materials and parts X and these second materials and parts Y material behavior are different, as shown in Figure 2;
B. mould exchange step, by this drive unit A, driving this first patrix 11 outwards moves, then this second patrix 21 is moved to these first counterdie, 12 tops and cover, as shown in Figure 3, after this more as shown in Figure 4, this first patrix 11 is moved to these second counterdie, 22 tops and cover, the first materials and parts X that makes way for this first patrix 11 applying that contacts with the second materials and parts Y that is positioned at this second counterdie 22;
C. thermoset forming step to this first materials and parts X and these second materials and parts Y heating, makes these first materials and parts X engage with these second materials and parts Y hot melt and curing molding is an EVA finished product Z; And
D. finished product takes out and the mould reset process, driving this second patrix 21 by this drive unit A outwards moves, then this first patrix 11 is moved back to these first counterdie, 12 tops and cover, and the EVA finished product Z that will be positioned at this second counterdie 22 this moment takes out, as shown in Figure 5, again as shown in Figure 6, this second patrix 21 is moved back to these second counterdie, 22 tops and cover, and second patrix 21 of first patrix 11 that makes this first mould 10 and this second mould 20 resets.
The forming method of EVA of the present invention in addition, first counterdie 12 of also commutative this first mould 10 and second counterdie 22 of this second mould 20, promptly in this mould exchange step, allow this first counterdie 12 outwards move, then this second counterdie 22 is moved to these first patrix, 11 belows and close, again this first counterdie 12 is moved to these second patrix, 21 belows and and close the first materials and parts X that makes way for this first patrix 11 applying that contacts with the second materials and parts Y that is positioned at this second counterdie 22;
In this finished product taking-up and the mould reset process, then be that this second counterdie 22 outwards moves, then this first counterdie 12 is moved back to these first patrix, 11 belows and and close, and after taking out this EVA finished product Z, again this second counterdie 22 is moved back to these second patrix, 21 belows and and close, and first counterdie 12 of this first mould 10 and second counterdie 22 of this second mould 20 are resetted, still can make in the engineering molding EVA finished product in one with two kinds of material behaviors.
Can learn by aforementioned flow process, the forming method of EVA of the present invention, can make in the engineering at one, mold EVA finished product Z with the first materials and parts X and second materials and parts Y, since mold EVA finished product in the engineering with two kinds of material behaviors and can make in one, more can use the first different materials and parts X of color and the second materials and parts Y, in a making engineering, mold EVA finished product with double-colored pair of material behavior, this kind divides behind the mold forming method of matched moulds moulding again with dissimilar material properties, more can save making and constitute time of EVA finished product, promote industrial competitiveness greatly by two kinds of material behaviors.
In addition, this first mould 10 not only can be used to make the method that is made of the EVA finished product two kinds of material behaviors with this second mould 20, as long as shown in Figure 8, change first counterdie 12 of this first mould 10, and use a counterdie 14 with die cavity, and second patrix 21 of changing this second mould 20, and use a patrix 24 with die cavity, just this first mould 10 and this second mould 20 can be used as general mould, and be that the 3rd materials and parts X ' and the integral body of same material characteristic is the 4th materials and parts Y ' of same material characteristic in order to ejection formation integral body.
In sum, the present invention is forming method and the mould structure of a kind of EVA, it comprises the ejection formation step, the mould exchange step, thermoset forming step and finished product are got four steps such as material and mould reset process, and its mould comprises one first mould and one second mould, and the same side form of this first mould and this second mould can exchange, utilize those steps and mould, after allowing the different materials and parts of two kinds of material behaviors respectively at ejection formation in the two molds, hot melt engages and curing molding in a mould again, and reaches the purpose that has two kinds of material behaviors in the EVA finished product.
Claims (8)
1, the forming method of a kind of EVA comprises the following step:
A. ejection formation step, ejection formation one first materials and parts and one second materials and parts respectively in second counterdie of first patrix of one first mould and one second mould, and these first materials and parts and this second materials and parts material behavior are different;
B. mould exchange step, exchange first patrix of this first mould and second patrix of this second mould, and allow second patrix of this second mould and first counterdie of this first mould cover, and allow first patrix of this first mould and second counterdie of this second mould cover, the applying and first materials and parts of making way for this first patrix contact with second materials and parts that are positioned at this second counterdie;
C. the thermoset forming step to these first materials and parts and the heating of this second materials and parts, makes these first materials and parts engage and curing molding one EVA finished product with this second materials and parts hot melt; And
D. finished product takes out and the mould reset process, this EVA finished product is taken out, and exchange this first patrix and this second patrix once more, and this two patrix is resetted.
2, the forming method of EVA according to claim 1 is characterized in that in the described ejection formation step, the color of these first materials and parts and these second materials and parts is different.
3, the mould structure of the employed EVA of forming method of a kind of EVA as claimed in claim 1, it comprises one first mould and one second mould, this first mould is become by one first patrix and one first lower module, this first patrix also has one first die cavity, this second mould is become by one second patrix and one second lower module, this second counterdie has one second die cavity, and this first mould is connected with a drive unit respectively with this second mould, and this drive unit also can drive second patrix exchange of first patrix and this second mould of this first mould.
4, the mould structure of EVA according to claim 3 is characterized in that described drive unit is with hydraulic pressure, air pressure, connecting rod, slide rail or merge preceding method to drive this first mould and this second mould.
5, the forming method of a kind of EVA comprises the following step:
A. ejection formation step, ejection formation one first materials and parts and one second materials and parts respectively in second counterdie of first patrix of one first mould and one second mould, and these first materials and parts and this second materials and parts material behavior are different;
B. mould exchange step, exchange first counterdie of this first mould and second counterdie of this second mould, and allow second patrix of this second mould and this first mould first counterdie and close, and allow first patrix of this first mould and this second mould second counterdie and close applying and first materials and parts of making way for this first patrix contact with second materials and parts that are positioned at this second counterdie;
C. the thermoset forming step to these first materials and parts and the heating of this second materials and parts, makes these first materials and parts engage and curing molding one EVA finished product with this second materials and parts hot melt; And
D. finished product takes out and the mould reset process, this EVA finished product is taken out, and exchange this first counterdie and this second counterdie once more, and this two counterdie is resetted.
6, the forming method of EVA according to claim 5 is characterized in that in the described ejection formation step, the color of these first materials and parts and these second materials and parts is different.
7, the mould structure of the employed EVA of forming method of a kind of EVA as claimed in claim 5, it is characterized in that comprising one first mould and one second mould, this first mould is become by one first patrix and one first lower module, this first patrix also has one first die cavity, this second mould is become by one second patrix and one second lower module, this second counterdie has one second die cavity, and this first mould is connected with a drive unit respectively with this second mould, and this drive unit also can drive second counterdie exchange of first counterdie and this second mould of this first mould.
8, the mould structure of EVA according to claim 7 is characterized in that described drive unit is with hydraulic pressure, air pressure, connecting rod, slide rail or merge preceding method to drive this first mould and this second mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100978141A CN101289004A (en) | 2007-04-18 | 2007-04-18 | EVA forming method and die structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100978141A CN101289004A (en) | 2007-04-18 | 2007-04-18 | EVA forming method and die structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101289004A true CN101289004A (en) | 2008-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100978141A Pending CN101289004A (en) | 2007-04-18 | 2007-04-18 | EVA forming method and die structure |
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| CN (1) | CN101289004A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205643A (en) * | 2011-04-07 | 2011-10-05 | 陶明聪 | Process for forming irregular-shaped hollow product by plastic instead of metal |
-
2007
- 2007-04-18 CN CNA2007100978141A patent/CN101289004A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205643A (en) * | 2011-04-07 | 2011-10-05 | 陶明聪 | Process for forming irregular-shaped hollow product by plastic instead of metal |
| CN102205643B (en) * | 2011-04-07 | 2014-04-02 | 陶明聪 | Process for forming irregular-shaped hollow product by plastic instead of metal |
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Open date: 20081022 |