CN108274729B - Stretching die made of high polymer material and manufacturing method thereof - Google Patents
Stretching die made of high polymer material and manufacturing method thereof Download PDFInfo
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- CN108274729B CN108274729B CN201711433076.3A CN201711433076A CN108274729B CN 108274729 B CN108274729 B CN 108274729B CN 201711433076 A CN201711433076 A CN 201711433076A CN 108274729 B CN108274729 B CN 108274729B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/30—Drawing through a die
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention belongs to the field of stretching molds, and particularly relates to a stretching mold made of a high polymer material and a manufacturing method thereof, wherein the stretching mold made of the high polymer material comprises an enclosing frame, a gel coat layer, a transition layer, a coagulating back material and a processing layer are sequentially filled in the enclosing frame, the gel coat layer comprises epoxy resin and an aliphatic curing agent, the mass ratio of the epoxy resin to the aliphatic curing agent is (8-13), the transition layer comprises epoxy resin, the aliphatic curing agent and aluminum powder, and the coagulating back material comprises epoxy resin, the aliphatic curing agent and sand. The invention provides a high polymer material manufacturing drawing die and a manufacturing method thereof, wherein the high polymer material manufacturing drawing die has the production capacity of forming small-batch drawn pieces by using a high polymer material to replace metal manufacturing drawing die so as to finish the production of the drawing die with high precision, long service life and short manufacturing time in a very short time.
Description
Technical Field
The invention belongs to the field of stretching molds, and particularly relates to a stretching mold made of a high polymer material and a manufacturing method thereof.
Background
China now sends the product development capacity and the conversion capacity to the country in the laggard world, materials for rapid manufacturing and advanced methods used are limited by developed countries, and in order to catch up with the advanced level of the world, the country advocates and develops rapid prototyping manufacturing industry vigorously. However, the existing drawing dies are all made of metal, so that the manufacturing period is long and the cost is high.
Therefore, in view of these problems, there is provided a polymer material-made drawing die and a method for manufacturing the same, which can achieve a production capability of forming a small lot of drawn pieces by manufacturing the drawing die with a polymer material instead of a metal and thereby completing a production of the drawing die with high accuracy, a long life and a short manufacturing time in an extremely short time.
Disclosure of Invention
The invention provides a high polymer material drawing die and a manufacturing method thereof, which aim to solve the technical problems in the prior art and replace metal with high polymer materials to manufacture the drawing die, thereby achieving the production of the drawing die with high precision, long service life and short manufacturing time in a very short time and forming the production capacity of small-batch drawn pieces.
The technical scheme adopted by the invention for solving the technical problems in the prior art is as follows:
a drawing die for high polymer material comprises an enclosing frame, the enclosure frame is sequentially filled with a gel coat layer, a transition layer, a coagulation backing material and a processing layer, the gel coat layer comprises epoxy resin and an aliphatic curing agent, the mass ratio of the epoxy resin to the aliphatic curing agent is 100: (8-13), the transition layer comprises epoxy resin, aliphatic curing agent and aluminum powder, the mass ratio of the epoxy resin to the aliphatic curing agent to the aluminum powder is 100: (20-40): (500-800), the coagulating back material comprises epoxy resin, an aliphatic curing agent and sand, wherein the mass ratio of the epoxy resin to the aliphatic curing agent to the sand is 100: (20-40): (800-1200), the processing layer comprises epoxy resin, an aliphatic curing agent and aluminum powder, and the mass ratio of the epoxy resin to the aliphatic curing agent to the aluminum powder is 100: (20-40): (500-800).
The invention can also adopt the following technical scheme:
in the above drawing die made of a polymer material, the aliphatic curing agent is an aliphatic amine.
A manufacturing method for manufacturing a stretching die by using a high polymer material comprises the following steps:
the method comprises the following steps: combining a male die and a blank holder which are made of plastic or metal at a gap of 3 mm-10 mm, and fixing the male die and the blank holder on a flat plate;
step two: sticking a layer of thick wax sheets on the upper surfaces of the male die and the blank holder;
step three: an enclosing frame is welded at the upper edge of the blank holder, and the outer side face of the enclosing frame and the outer side face of the blank holder are in the same plane;
step four: mixing epoxy resin and an aliphatic curing agent in a mass ratio of 100 (8-13), uniformly stirring, coating on the surface of the thick wax sheet along with the shape, and curing for 12 hours to form a gel coat layer;
step five: mixing epoxy resin, aliphatic curing agent and aluminum powder in a mass ratio of 100 (20-40): (500-800) into paste, filling the paste on the upper surface of the gel coat layer in a random manner, and curing for 12 hours to form a transition layer;
step six: mixing epoxy resin, aliphatic curing agent and sand in a mass ratio of 100 (20-40): (800-1200) into paste, filling the paste on the upper surface of the transition layer to form a concrete backing material, and tamping the concrete backing material by using a mallet;
step seven: mixing epoxy resin, aliphatic curing agent and aluminum powder in a mass ratio of 100 (20-40): (500-800) into paste, pouring the paste on the upper surface of the concrete backing material along with the shape, and curing for 12-16 hours to form a processing layer;
step eight: and (4) processing the processing layer to an appropriate size by using a CNC machine tool.
In the manufacturing method of the stretching die made of the polymer material, further, the edges of the male die and the blank holder are flush.
In the manufacturing method of the stretching die made of the polymer material, further, the thickness of the thickness wax sheet is equal to the thickness of the stretching-formed metal plate, when the stretching-formed metal plate is a high-strength steel plate, the thickness of the stretching-formed metal plate is 0.3mm to 1.2mm, and when the stretching-formed metal plate is an aluminum plate, the thickness of the stretching-formed metal plate is 0.3mm to 3 mm.
In the above method for manufacturing a drawing die from a polymer material, the mass ratio of the epoxy resin and the aliphatic curing agent in the gel coat layer is further 100: 10.
In the above method for manufacturing a drawing die from a polymer material, the mass ratio of the epoxy resin, the aliphatic curing agent and the aluminum powder in the transition layer is 100:40:800, and the mass ratio of the epoxy resin, the aliphatic curing agent and the aluminum powder in the processing layer is 100:40: 400.
In the method for manufacturing a drawing die made of a polymer material, the thickness of the steel plate of the enclosure frame is 8 mm.
The invention has the advantages and positive effects that:
1. the invention uses the high polymer material to replace metal to manufacture the metal drawing die, the method has simple operation, the traditional processing is almost not used when the concave die is manufactured, and the production capacity of small-batch metal drawing pieces is formed.
2. The invention can solve the problems of long manufacturing period and high cost of the metal mold for producing the aircraft skin during the development stage of the automobile metal parts, reduce the manufacturing cost of the metal stretching mold, shorten the manufacturing period of the mold, innovate the manufacturing process of the stretching mold and fill the blank of the manufacturing of the rapid stretching mold in China.
3. The invention uses the self-developed mode of gel coat and coagulation backing material, and fully exerts the advantages of easy operation, easy processing and room temperature curing of the resin.
Drawings
The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus do not limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of the present invention.
In the figure:
the blank holder is 1, the male die is 2, the wax sheet is 3, the gel coat layer is 4, the transition layer is 5, the coagulation backing material is 6, the enclosure frame is 7, and the processing layer is 8.
Detailed Description
First, it should be noted that the specific structure, characteristics, advantages, etc. of the polymer material drawing die and the method for manufacturing the same according to the present invention will be specifically described below by way of example, however, all the descriptions are for illustrative purposes only and should not be construed as forming any limitation to the present invention. Furthermore, any single feature described or implicit in any embodiment or any single feature shown or implicit in any drawing may still be combined or subtracted between any of the features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein. In addition, for the sake of simplicity, the same or similar features may be indicated in only one place in the same drawing.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. In contrast, when an element is said to be "directly connected" to another element, it is intended that no intervening element is present.
Fig. 1 shows a schematic structural diagram of the present invention, and the present invention will be specifically described with reference to fig. 1.
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
a high polymer material manufacturing and stretching mold comprises an enclosing frame 7, wherein a gel coat layer 4, a transition layer 5, a coagulation backing material 6 and a processing layer 8 are sequentially filled in the enclosing frame 7, the gel coat layer 4 comprises epoxy resin and aliphatic curing agent, the mass ratio of the epoxy resin to the aliphatic curing agent is 100 (8-13), the transition layer 5 comprises epoxy resin, aliphatic curing agent and aluminum powder, the mass ratio of the epoxy resin, the aliphatic curing agent and the aluminum powder is 100 (20-40) (500-, the mass ratio of the epoxy resin, the aliphatic curing agent and the aluminum powder is 100 (20-40): 500-800).
It is noted that the aliphatic curing agent is an aliphatic amine.
The invention uses the high polymer material to replace metal to manufacture the metal drawing die, the method has simple operation, the traditional processing is almost not used when the concave die is manufactured, and the production capacity of small-batch metal drawing pieces is formed.
The invention can solve the problems of long manufacturing period and high cost of the metal mold for producing the aircraft skin during the development stage of the automobile metal parts, reduce the manufacturing cost of the metal stretching mold, shorten the manufacturing period of the mold, innovate the manufacturing process of the stretching mold and fill the blank of the manufacturing of the rapid stretching mold in China.
The invention uses the self-developed mode of gel coat and coagulation backing material 6, and fully exerts the advantages of easy operation, easy processing and room temperature curing of the resin.
Within the above numerical range, the polymer material can be molded by a drawing die, and thus, the above ranges are not always taken as examples. Only three embodiments are shown, and the skilled person can operate the embodiment according to the above ranges to change the ratio, and can complete the operations of other embodiments.
The first embodiment is as follows:
by way of example, in this example, the epoxy resin was Comptost bisphenol A epoxy resin HE 2008. The method for manufacturing the stretching die by using the high polymer resin material comprises the following steps:
the manufacturing method of the stretching die made of the high polymer material comprises the following steps:
the method comprises the following steps: the male die 2 and the blank holder 1 which are made of plastic or metal are combined at a gap of 3mm and fixed on a flat plate;
step two: sticking a layer of thick wax sheet 3 on the upper surfaces of the male die 2 and the blank holder 1;
step three: an enclosing frame 7 is welded at the upper edge of the blank holder 1, and the outer side face of the enclosing frame 7 is coplanar with the outer side face of the blank holder 1;
step four: mixing epoxy resin and an aliphatic curing agent in a mass ratio of 100:8, uniformly stirring, coating the mixture on the surface of the thick wax sheet 3 along with the mold, and curing for 12 hours to form a gel coat layer 4;
step five: mixing epoxy resin, aliphatic curing agent and aluminum powder in a mass ratio of 100:20:500 into paste, filling the paste on the upper surface of the gel coat layer 4 in a random manner, and curing for 12 hours to form a transition layer 5;
step six: mixing epoxy resin, an aliphatic curing agent and sand in a mass ratio of 100:20:800 into paste, filling the paste on the upper surface of the transition layer 5 to form a concrete backing material 6, and tamping the concrete backing material with a mallet;
step seven: mixing epoxy resin, aliphatic curing agent and aluminum powder in a mass ratio of 100:20:500 into paste, pouring the paste on the upper surface of the coagulating back material 6 along with the shape, and curing for 12 hours to form a processing layer 8;
step eight: the machining layer 8 is machined to an appropriate size using a CNC machine.
Example two:
by way of example, in this example, the epoxy resin was Comptost bisphenol A epoxy resin HE 2008. The method for manufacturing the stretching die by using the high polymer resin material comprises the following steps:
the manufacturing method of the stretching die made of the high polymer material comprises the following steps:
the method comprises the following steps: the male die 2 and the blank holder 1 which are made of plastic or metal are combined at a gap of 10mm and fixed on a flat plate;
step two: sticking a layer of thick wax sheet 3 on the upper surfaces of the male die 2 and the blank holder 1;
step three: an enclosing frame 7 is welded at the upper edge of the blank holder 1, and the outer side face of the enclosing frame 7 is coplanar with the outer side face of the blank holder 1;
step four: mixing epoxy resin and an aliphatic curing agent in a mass ratio of 100:13, uniformly stirring, coating the mixture on the surface of the thick wax sheet 3 along with the mold, and curing for 12 hours to form a gel coat layer 4;
step five: mixing epoxy resin, aliphatic curing agent and aluminum powder in a mass ratio of 100:40:800 into paste, filling the paste on the upper surface of the gel coat layer 4 in a random manner, and curing for 12 hours to form a transition layer 5;
step six: mixing epoxy resin, an aliphatic curing agent and sand in a mass ratio of 100:40:1200 into paste, filling the paste on the upper surface of the transition layer 5 to form a concrete backing material 6, and tamping the concrete backing material with a mallet;
step seven: mixing epoxy resin, aliphatic curing agent and aluminum powder in a mass ratio of 100:40:800 into paste, pouring the paste on the upper surface of the coagulating back material 6 along with the shape, and curing for 16 hours to form a processing layer 8;
step eight: the machining layer 8 is machined to an appropriate size using a CNC machine.
Example three:
by way of example, in this example, the epoxy resin was Comptost bisphenol A epoxy resin HE 2008. The method for manufacturing the stretching die by using the high polymer resin material comprises the following steps:
the method comprises the following steps: combining a male die 2 made of polymer processable plastic or metal with a blank holder 1;
step two: combining the male die 2 and the blank holder 1 at a 6mm gap, and fixing the combined male die and the blank holder on a flat plate;
step three: sticking a layer of thickness wax sheet 3 on the upper surfaces of the male die 2 and the blank holder 1, wherein the thickness wax sheet 3 is determined according to the thickness of the metal plate to be stretched and formed, and the thickness wax sheet 3 with the thickness of 0.7mm is used in the embodiment; the die manufactured by the method can meet the requirements of a high-strength steel plate with the thickness of 0.3mm-1.2mm and an aluminum plate with the thickness of 0.3mm-3mm of a metal drawing plate.
Step four: welding a concave die steel plate enclosure frame 7, wherein the thickness of the steel plate is 8mm, if necessary, reinforcing ribs can be added in the steel plate enclosure frame, and the enclosure frame 7 is positioned and placed by taking the outer frame of the blank holder 1 as a reference;
step five: according to the epoxy resin 100:10 curing agent, epoxy resin adopts epoxy surface gel coat, the special S80 epoxy gel coat for Compster is mixed with the curing agent according to the proportion of 100:10, the mixture is fully stirred to ensure that the resin and the curing agent are uniformly mixed, the construction is carried out by using a brush with a brush, the resin and the curing agent are coated on the surface of the thick wax sheet 3 along with the shape to form a gel coat layer 4, and the construction is convenient, rapid and quick. Curing for 12 hours. The surface gel coat needs to be constructed twice, and the total thickness is 1.5mm-3 mm.
Step six: according to the technical scheme, the method comprises the following steps of mixing Comptost bisphenol A epoxy resin HE2008, and mixing the components in a ratio of resin, curing agent and aluminum powder of 100:40:800, filling the mixture on the back of the surface gel coat to form a transition layer 5, curing for 12 hours in an environment with the room temperature of not less than 20 ℃, wherein the granularity of aluminum powder added into the Compster bisphenol A epoxy resin HE2008 is 80-200 meshes, and the thickness of the transition layer 5 is 15-20 mm. In the step, the resin and the curing agent can be mixed according to the proportion of 100:40, and then the aluminum powder of 80-200 meshes is added for mixing
Step seven: the method comprises the following steps of mixing Comptost bisphenol A epoxy resin HE2008, and mixing the components in a ratio of resin to curing agent to sand 100:40:1200, mixing into paste, filling the paste on the back of the transition layer 5 to form a concrete backing material 6, and tamping with a mallet; sand is added into the Compster bisphenol A epoxy resin HE2008, the cost is mainly considered to be reduced, if the Compster bisphenol A epoxy resin HE2008 is considered to be reused, 80-mesh aluminum powder can be added, and the proportion of the Compster bisphenol A epoxy resin HE2008 to the curing agent and the aluminum powder is as follows: 100:40: 1000.
and 8: according to the technical scheme, the method comprises the following steps of mixing Comptost bisphenol A epoxy resin HE2008, and mixing the components in a ratio of resin, curing agent and aluminum powder of 100:40:400, and then pouring the mixture on the back surface of the concrete backing material 6 along with the mould to form a processing layer 88, and curing for 14 hours.
Step nine: and (4) processing the processing layer 8 by using a CNC machine tool until the process requirement is met.
In summary, the present invention can provide a polymer material drawing die and a method for manufacturing the same, which can achieve the production of a drawing die with high precision, long life and short manufacturing time in a very short time and the production capability of forming small-lot drawn pieces.
The present invention has been described in detail with reference to the above examples, but the description is only for the preferred examples of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (8)
1. A tensile mould of macromolecular material preparation which characterized in that: the high polymer material manufacturing and stretching mold comprises an enclosure frame, wherein a gel coat layer, a transition layer, a coagulation backing material and a processing layer are sequentially filled in the enclosure frame, the gel coat layer comprises epoxy resin and an aliphatic curing agent, wherein the mass ratio of the epoxy resin to the aliphatic curing agent is 100: (8-13), the transition layer comprises epoxy resin, an aliphatic curing agent and aluminum powder, and the mass ratio of the epoxy resin to the aliphatic curing agent to the aluminum powder is 100: (20-40): (500-800), the coagulating back material comprises epoxy resin, an aliphatic curing agent and sand, wherein the mass ratio of the epoxy resin to the aliphatic curing agent to the sand is 100: (20-40): (800-1200), the processing layer comprises epoxy resin, an aliphatic curing agent and aluminum powder, and the mass ratio of the epoxy resin to the aliphatic curing agent to the aluminum powder is 100: (20-40): (500-800).
2. The drawing die made of the polymer material according to claim 1, wherein: the aliphatic curing agent is aliphatic amine.
3. A manufacturing method of a stretching die made of high polymer materials is characterized in that: the manufacturing method of the stretching die made of the high polymer material comprises the following steps:
the method comprises the following steps: combining a male die and a blank holder which are made of plastic or metal at a gap of 3 mm-10 mm, and fixing the male die and the blank holder on a flat plate;
step two: sticking a layer of thick wax sheets on the upper surfaces of the male die and the blank holder;
step three: an enclosing frame is welded at the upper edge of the blank holder, and the outer side face of the enclosing frame and the outer side face of the blank holder are in the same plane;
step four: mixing epoxy resin and an aliphatic curing agent in a mass ratio of 100 (8-13), uniformly stirring, coating on the surface of the thick wax sheet along with the shape, and curing for 12 hours to form a gel coat layer;
step five: mixing epoxy resin, aliphatic curing agent and aluminum powder in a mass ratio of 100 (20-40): (500-800) into paste, filling the paste on the upper surface of the gel coat layer in a random manner, and curing for 12 hours to form a transition layer;
step six: mixing epoxy resin, aliphatic curing agent and sand in a mass ratio of 100 (20-40): (800-1200) into paste, filling the paste on the upper surface of the transition layer to form a concrete backing material, and tamping the concrete backing material by using a mallet;
step seven: mixing epoxy resin, aliphatic curing agent and aluminum powder in a mass ratio of 100 (20-40): (500-800) into paste, pouring the paste on the upper surface of the concrete backing material along with the shape, and curing for 12-16 hours to form a processing layer;
step eight: and (4) processing the processing layer to an appropriate size by using a CNC machine tool.
4. The method for manufacturing a polymer material drawing die according to claim 3, wherein: the edges of the male die and the blank holder are flush.
5. The method for manufacturing a polymer material drawing die according to claim 3, wherein: the thickness of thickness wax piece equals with stretch-formed sheet metal's thickness, when stretch-formed sheet metal was the high strength steel board, its thickness was 0.3mm to 1.2mm, when stretch-formed sheet metal was aluminum plate, its thickness was 0.3mm to 3 mm.
6. The method for manufacturing a polymer material drawing die according to claim 3, wherein: the mass ratio of the epoxy resin to the aliphatic curing agent of the gel coat layer is 100: 10.
7. The method for manufacturing a polymer material drawing die according to claim 3, wherein: the mass ratio of the epoxy resin, the aliphatic curing agent and the aluminum powder of the transition layer is 100:40:800, and the mass ratio of the epoxy resin, the aliphatic curing agent and the aluminum powder of the processing layer is 100:40: 400.
8. The method for manufacturing a polymer material drawing die according to claim 3, wherein: the thickness of the steel plate of the enclosure frame is 8 mm.
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| CN111300693B (en) * | 2020-04-09 | 2022-05-31 | 江苏九铸合金新材料有限公司 | Alloy die manufacturing process and die manufactured by same |
| CN111468618B (en) * | 2020-04-09 | 2022-04-15 | 沈阳沈飞机械设备制造厂 | Preparation method of airplane sheet metal stretching die |
| CN111690235B (en) * | 2020-06-29 | 2023-05-02 | 贵州航天风华精密设备有限公司 | Skin mold forming material and manufacturing and application thereof |
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| CN101099983A (en) * | 2006-07-06 | 2008-01-09 | 北京豪仪润世科技有限公司 | Metal thin plate calendaring resin die |
| CN102152482A (en) * | 2011-03-17 | 2011-08-17 | 国电联合动力技术(连云港)有限公司 | Die for blade of fan |
| CN102808490B (en) * | 2011-05-31 | 2016-08-10 | 马义和 | Abnormity exterior-wall heat insulation, decoration integrated link plate and preparation method thereof and process the mould of this product |
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