CN115871137A - Composite material mold production process - Google Patents
Composite material mold production process Download PDFInfo
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- CN115871137A CN115871137A CN202211502216.9A CN202211502216A CN115871137A CN 115871137 A CN115871137 A CN 115871137A CN 202211502216 A CN202211502216 A CN 202211502216A CN 115871137 A CN115871137 A CN 115871137A
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Abstract
The invention discloses a production process of a composite material die, which comprises the following specific steps: (1) fine carving; (2) covering; (3) manufacturing a basic mold; (4) shaping the silica gel layer; (5) manufacturing a composite material mould; (6) Sintering the composite material mold, namely sintering the base mold, the silica gel layer and the formed ceramic powder layer with a certain thickness at high temperature to form a ceramic surface layer with high density and high strength on the surface of the ceramic powder layer; (7) Cooling and demolding, wherein the sintered ceramic surface layer and the silica gel layer are arranged between the ceramic surface layer and the silica gel layer, the material of the silica gel layer has contractility in the cooling process, and the ceramic surface layer can be separated from the surface of the silica gel layer to form a usable ceramic mold; (8) Finally, the obtained ceramic mold is used for producing plastic products formed by plastic suction, blow molding or injection molding; the shape of the basic mould and the shape of the ceramic mould are the same as the shape of the mould required in plastic suction, blow moulding or injection moulding. The invention has the effects of high pattern fineness, low cost and high production efficiency.
Description
Technical Field
The invention relates to the field of mold processing, in particular to a production process of a composite mold combining resin and ceramic sand or ceramic powder or ceramsite.
Background
At present, plastic materials widely used in the fields of building materials, industrial products, daily necessities, plastic flooring, floor tiles, artificial leather, pipes, electric wires and cables, packaging films, bottles, foaming materials, sealing materials, fibers and the like are on the market, and when the plastic materials are used for processing and generating products, plastic suction molding is mainly adopted. Because the patterns on the surface of the processed plastic product formed by plastic suction molding are rough and basically are groove patterns of a plurality of pits, if the patterns on the surface of the mold adopted by the plastic suction molding are too shallow, the patterns on the surface of the mold cannot be shown on the formed plastic product after the plastic sheet is softened under the action of vacuum adsorption; in addition, in order to enable the produced plastic products to meet the processing requirements, the plastic products required by production cannot meet the preprocessing requirements, the labor cost is increased, and the processing efficiency is reduced by adopting manual secondary engraving processing.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a composite material mold production process with high pattern fineness, low cost and high production efficiency.
In order to achieve the purpose, the invention provides a production process of a composite material die, which comprises the following specific steps:
(1) Fine carving, namely, fine carving patterns on the surface of a basic plate; the fine-grained carved patterns are patterns which are finely carved on the surface of the basic plate and are regularly arranged; therefore, the shape of the carved patterns can be designed at will.
(2) Covering, namely covering the surface of the basic plate with a molten silica gel material, forming a silica gel layer on the surface of the basic plate by the silica gel material at normal temperature, and manually separating the silica gel layer from the basic plate; at the moment, a printed pattern consistent with the carved pattern is formed on the side face, in contact with the surface of the basic plate, of the silica gel layer;
(3) Manufacturing a basic die, then machining the basic shape and size of the needed basic die by using a machine tool, and reserving a layer of thickness space on the surface of the basic die in the machining process;
(4) Shaping the silica gel layer, namely attaching the silica gel layer in the step (2) to a reserved space on the surface of the processed and molded basic die; the thickness of the silica gel layer corresponds to the thickness of the reserved space on the surface of the basic die;
(5) Manufacturing a composite material mold, uniformly spraying composite material powder obtained by mixing ceramic powder or ceramic sand or ceramsite with resin and a stabilizer onto the surface of the silica gel layer in the step (4), and then forming a ceramic powder layer with a certain thickness;
(6) Sintering the composite material mold, namely sintering the base mold, the silica gel layer and the formed ceramic powder layer with a certain thickness at high temperature to form a ceramic surface layer with high density and high strength on the ceramic powder layer on the surface;
(7) Cooling and demolding, wherein the sintered ceramic surface layer and the silica gel layer are arranged between the ceramic surface layer and the silica gel layer, the silica gel layer has contractility in the cooling process, and the ceramic surface layer can be separated from the surface of the silica gel layer to form an available ceramic mold;
(8) Finally, the obtained ceramic mold is used for producing plastic products formed by plastic suction, blow molding or injection molding;
the shape of the basic mold and the shape of the ceramic mold are the same as the shape of the mold required in plastic suction, blow molding or injection molding. Therefore, the ceramic mold replaces metal molds such as injection molding, plastic suction, blow molding and the like, has low cost and can reach the fineness which can not be achieved by injection molding.
In some embodiments, in order to enhance the strength of the ceramic mold, a temperature-resistant and air-permeable material is filled on the concave side of the ceramic mold.
In some embodiments, the refractory gas permeable material is an asbestos material. In some embodiments, the step of blister forming is as follows: (1) Preprocessing a plastic material into a plastic plate with a certain thickness; (2) Then, fixing the plastic plate above the ceramic mold, and heating the plastic plate to a softening temperature by a heater; (3) Then, lifting the ceramic mould upwards to be tightly attached to the plastic plate; (4) Then, quickly pumping air between the plastic plate and the ceramic mold by using a vacuum pump, and adsorbing the softened plastic plate onto the ceramic mold; (5) And finally, cooling and demolding to obtain the plastic product with the required carved patterns.
In some embodiments, the carved pattern on the surface of the base plate and the printed pattern on the surface of the silica gel layer are both reverse patterns with concave grains or convex grains.
In some embodiments, the base plate in step (1) is a metal plate or a non-metal plate.
In some embodiments, the layer of silicone gel in step (2) is larger and has a shape corresponding to the surface area of the base plate used.
In some embodiments, the composite powder in step (5) is sprayed on the surface of the silica gel layer by using centrifugal force type electrostatic spraying or ultrasonic spraying or roller coating or air spraying or high-pressure airless spraying.
In some embodiments, the sintering temperature in step (6) is above 200 degrees.
In some embodiments, the ceramic mold has a thickness of 30CM.
The invention has the advantages of high pattern fineness, low cost and high production efficiency.
The method comprises the following specific steps: because after the fine carving pattern is printed on the silica gel layer, the silica gel layer is shaped by utilizing the basic mold, then the composite material powder is sprayed on the surface of the silica gel layer to form a ceramic powder layer, then a ceramic mold is obtained after high-temperature sintering and cooling demolding, and finally the ceramic mold can be used as a mold for plastic suction molding to produce a specific plastic product. The plastic product processed by the ceramic mould saves the manual secondary processing, has multiple and clear carved patterns, can cover the surface of the plastic product and the deep concave position on the surface, and has clear and fine carved pattern lines. Compared with the plastic suction molding mode in the prior art, the production time and the production cost are greatly shortened in the whole processing process, and the ceramic mold which is printed with the carved patterns and sintered by the composite material powder is adopted after the improvement and is used as a mold for producing plastic products, so that the defects that the patterns cannot be shown on the molded plastic products and the labor cost is increased due to the fact that the traditional mold is used for producing the plastic products are overcome. Therefore, the effects of high pattern fineness, low cost and high production efficiency of plastic products processed by the ceramic mold made of the composite material are achieved.
Detailed Description
The present invention will be described in further detail below.
The invention provides a production process of a composite material die, which comprises the following specific steps:
(1) Fine carving, namely, fine carving patterns on the surface of a basic plate; the fine grain pattern is a pattern in which fine grains are finely engraved and arranged regularly on the surface of the base plate. The carved patterns on the surface of the base plate and the printed patterns on the surface of the silica gel layer are reverse patterns with concave lines or convex lines. The basic plate is a metal plate or a nonmetal plate.
(2) Covering, namely covering the surface of the basic plate with a silica gel material in a molten state, forming a silica gel layer on the surface of the basic plate by using the silica gel material in a normal temperature state, and manually separating the silica gel layer from the basic plate; at the moment, a printed pattern consistent with the carved pattern is formed on the side face, in contact with the surface of the basic plate, of the silica gel layer; the size and shape of the silica gel layer correspond to the surface area of the used basic plate.
(3) Manufacturing a basic die, then machining the basic shape and size of the needed basic die by using a machine tool, and reserving a layer of thickness space on the surface of the basic die in the machining process; the basic mould has the same shape as the moulds used in the prior art.
(4) Shaping the silica gel layer, namely attaching the silica gel layer in the step (2) to a reserved space on the surface of the processed and molded basic die; the thickness of the silica gel layer corresponds to the thickness of the reserved space on the surface of the basic die.
(5) Manufacturing a composite material die, uniformly spraying composite material powder obtained by mixing ceramic powder or ceramic sand or ceramsite with resin and a stabilizer on the surface of the silica gel layer in the step (4), and then forming a ceramic powder layer with a certain thickness; the composite material powder is sprayed on the surface of the silica gel layer by adopting centrifugal force type electrostatic spraying or ultrasonic spraying or roller coating or air spraying or high-pressure airless spraying, and a ceramic powder layer with a certain thickness is formed on the later spraying layer.
(6) Sintering the composite material mold, namely sintering the base mold, the silica gel layer and the formed ceramic powder layer with a certain thickness at high temperature to form a ceramic surface layer with high density and high strength on the surface of the ceramic powder layer; the sintering temperature is more than 200 ℃.
(7) Cooling and demolding, wherein the sintered ceramic surface layer and the silica gel layer are arranged between the ceramic surface layer and the silica gel layer, the material of the silica gel layer has contractility in the cooling process, and the ceramic surface layer can be separated from the surface of the silica gel layer to form a usable ceramic mold; the thickness of the ceramic mould is 30CM. And forming micropore air holes on the surface of the sintered ceramic mold.
(8) Finally, the obtained ceramic mold is used for producing plastic products formed by plastic suction, blow molding or injection molding. The plastic suction molding steps are as follows: (1) Preprocessing a plastic material into a plastic plate with a certain thickness; (2) Then, fixing the plastic plate above the ceramic mold, and heating the plastic plate to a softening temperature by a heater; (3) Then, lifting the ceramic mold upwards to be tightly attached to the plastic plate; (4) Then, quickly pumping air between the plastic plate and the ceramic mold by using a vacuum pump, and adsorbing the softened plastic plate onto the ceramic mold; (5) And finally, cooling and demolding to obtain the plastic product with the required carved patterns. This is mainly because the ceramic mold of the composite material has a better bonding effect with the plastic plate. The shape of the basic mould and the shape of the ceramic mould are the same as the shape of the mould required in plastic suction, blow moulding or injection moulding. In order to enhance the strength of the ceramic mould, a temperature-resistant breathable material is filled on the concave side of the ceramic mould. The fireproof and breathable material is an asbestos material.
The principle is as follows: since the fine engraving patterns are printed on the silica gel layer, the silica gel layer is shaped by using the basic mold, then the composite material powder is sprayed on the surface of the silica gel layer to form a ceramic powder layer, a ceramic mold is obtained after high-temperature sintering and cooling demolding, and finally the ceramic mold can be used as a mold for plastic suction molding to produce specific plastic products.
EXAMPLE 1 example of production of automotive Plastic trunk pad
Step 1: firstly, engraving maple leaf-shaped patterns on the surface of a base plate; the surface of the finished basic board has many arranged regular maple leaf reverse patterns.
Step 2: covering the surface of the basic plate with a silica gel material in a molten state, forming a silica gel layer on the surface of the basic plate by using the silica gel material in a normal temperature state, and manually separating the silica gel layer from the basic plate; at the moment, the side face of the silica gel layer, which is in contact with the surface of the basic plate, is provided with a printed pattern consistent with the carved maple leaf modeling pattern.
And step 3: and then, machining the basic shape and size of the automobile trunk pad basic mould by using a machine tool, and reserving a layer of thickness space on the surface of the automobile trunk pad basic mould in the machining process.
And 4, step 4: and (3) sticking a silica gel layer printed with carved maple modeling patterns on the reserved space position on the surface of the machined and molded automobile trunk pad foundation mold.
And 5: uniformly spraying composite material powder obtained by mixing ceramic powder or ceramic sand or ceramsite with resin and a stabilizer on the surface of a silica gel layer printed with carved maple leaf modeling patterns, and then forming a ceramic powder layer with a certain thickness;
and 6: after the automobile trunk pad base mold, the silica gel layer and the formed ceramic powder layer with a certain thickness are integrally sintered at high temperature, the ceramic powder layer on the surface forms a ceramic surface layer with high density and high strength;
and 7: between the sintered ceramic surface layer and the silica gel layer, in the cooling process, the material of the silica gel layer has contractility, and the ceramic surface layer can be separated from the surface of the silica gel layer to form a usable automobile trunk pad ceramic mold;
and 8: finally obtaining a ceramic mould of the automobile trunk pad for producing plastic products formed by plastic suction;
and step 9: the plastic suction molding method comprises the following steps:
(1) Preprocessing a plastic material into a plastic plate with a certain thickness;
(2) Then, fixing the plastic plate above the automobile trunk pad ceramic mold, and heating the plastic plate to a softening temperature by a heater;
(3) Then, lifting the automobile trunk pad ceramic mould upwards to be tightly attached to the plastic plate;
(4) Then, quickly pumping air between the plastic plate and the automobile trunk pad ceramic mold by using a vacuum pump, and adsorbing the softened plastic plate onto the automobile trunk pad ceramic mold;
(5) And finally, cooling and demolding to obtain the automobile trunk pad product, wherein the surface of the automobile trunk pad product is clearly covered with a plurality of arranged patterns with regular carved maple leaf models.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A production process of a composite material mold comprises the following specific steps:
(1) Fine carving, namely, fine carving patterns on the surface of a basic plate;
(2) Covering, namely covering the surface of the basic plate with a molten silica gel material, forming a silica gel layer on the surface of the basic plate by the silica gel material at normal temperature, and manually separating the silica gel layer from the basic plate;
at the moment, a printed pattern consistent with the carved pattern is formed on the side face of the silica gel layer, which is in contact with the surface of the basic plate;
(3) Manufacturing a basic die, then machining the basic shape and size of the needed basic die by using a machine tool, and reserving a layer of thickness space on the surface of the basic die in the machining process;
(4) Shaping the silica gel layer, namely attaching the silica gel layer in the step (2) to a reserved space on the surface of the processed and molded basic die; the thickness of the silica gel layer corresponds to the thickness of the reserved space on the surface of the basic die;
(5) Manufacturing a composite material die, uniformly spraying composite material powder obtained by mixing ceramic powder or ceramic sand or ceramsite with resin and a stabilizer on the surface of the silica gel layer in the step (4), and then forming a ceramic powder layer with a certain thickness;
(6) Sintering the composite material mold, namely sintering the base mold, the silica gel layer and the formed ceramic powder layer with a certain thickness at high temperature to form a ceramic surface layer with high density and high strength on the ceramic powder layer on the surface;
(7) Cooling and demolding, wherein the sintered ceramic surface layer and the silica gel layer are arranged between the ceramic surface layer and the silica gel layer, the material of the silica gel layer has contractility in the cooling process, and the ceramic surface layer can be separated from the surface of the silica gel layer to form a usable ceramic mold;
(8) Finally, the obtained ceramic mold is used for producing plastic products formed by plastic suction, blow molding or injection molding;
the shape of the basic mold and the shape of the ceramic mold are the same as the shape of the mold required in plastic suction, blow molding or injection molding.
2. The production process of the composite material mold according to claim 1, wherein in order to enhance the strength of the ceramic mold, a temperature-resistant and breathable material is filled on the concave side of the ceramic mold.
3. A composite mould production process according to claim 2, wherein the refractory and gas permeable material is an asbestos material.
4. The composite mold production process according to claim 1 or 2, wherein the plastic molding step is as follows:
(1) Preprocessing a plastic material into a plastic plate with a certain thickness;
(2) Then, fixing the plastic plate above the ceramic mold, and heating the plastic plate to a softening temperature by a heater;
(3) Then, lifting the ceramic mold upwards to be tightly attached to the plastic plate;
(4) Then, quickly pumping air between the plastic plate and the ceramic mold by using a vacuum pump, and adsorbing the softened plastic plate onto the ceramic mold;
(5) And finally, cooling and demolding to obtain the plastic product with the required carved patterns.
5. The production process of the composite material mold as claimed in claim 1, wherein the carved patterns on the surface of the body plate and the printed patterns on the surface of the silica gel layer are reverse patterns with concave or convex patterns.
6. The process for producing a composite material mold as claimed in claim 5, wherein the base plate in the step (1) is a metal plate or a non-metal plate.
7. The composite mold production process according to claim 5, wherein the silica gel layer in step (2) is larger and has a shape corresponding to the surface area of the substrate used.
8. The production process of the composite material mold according to claim 1, wherein the composite material powder in the step (5) is sprayed on the surface of the silica gel layer by using centrifugal force type electrostatic spraying or ultrasonic spraying or roller coating or air spraying or high-pressure airless spraying, and then the sprayed layer forms a ceramic powder layer with a certain thickness.
9. The process for producing a composite mold as claimed in claim 1, wherein the sintering temperature in the step (6) is 200 degrees or more.
10. The process for producing a composite material mold as claimed in claim 1, wherein the ceramic mold has a thickness of 30CM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211502216.9A CN115871137A (en) | 2022-11-28 | 2022-11-28 | Composite material mold production process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211502216.9A CN115871137A (en) | 2022-11-28 | 2022-11-28 | Composite material mold production process |
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| Publication Number | Publication Date |
|---|---|
| CN115871137A true CN115871137A (en) | 2023-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211502216.9A Pending CN115871137A (en) | 2022-11-28 | 2022-11-28 | Composite material mold production process |
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| CN (1) | CN115871137A (en) |
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- 2022-11-28 CN CN202211502216.9A patent/CN115871137A/en active Pending
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