WO2019151554A1 - Moule de carbone vitreux pour moulage de verre, moule de noyau maître pour fabriquer un moule de carbone vitreux pour moulage de verre, et procédé de fabrication de moule de carbone vitreux pour moulage de verre - Google Patents

Moule de carbone vitreux pour moulage de verre, moule de noyau maître pour fabriquer un moule de carbone vitreux pour moulage de verre, et procédé de fabrication de moule de carbone vitreux pour moulage de verre Download PDF

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Publication number
WO2019151554A1
WO2019151554A1 PCT/KR2018/001489 KR2018001489W WO2019151554A1 WO 2019151554 A1 WO2019151554 A1 WO 2019151554A1 KR 2018001489 W KR2018001489 W KR 2018001489W WO 2019151554 A1 WO2019151554 A1 WO 2019151554A1
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Prior art keywords
mold
glassy carbon
carbon mold
glass
forming
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PCT/KR2018/001489
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English (en)
Korean (ko)
Inventor
김장균
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주식회사 이톰
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Priority to PCT/KR2018/001489 priority Critical patent/WO2019151554A1/fr
Publication of WO2019151554A1 publication Critical patent/WO2019151554A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass

Definitions

  • the present invention relates to a method of manufacturing a glassy carbon mold for glass molding, a master core mold for manufacturing a glassy carbon mold for glass molding, and a glassy carbon mold for glass molding.
  • the glass used as the cover glass in the touch panel must be molded into a curved surface.
  • a method of grinding the glass surface with a blind or the like to produce a curved surface has been frequently used.
  • such a polishing method requires efforts to match the surface roughness and transmittance of the glass, and has a problem of high scratch or glass breakage rate due to a large resistance given during polishing, and a large amount of molding time.
  • the method of forming the 3D glass using the upper mold and the lower mold is a method of forming a desired shape by applying pressure using the upper mold and the lower mold while the glass is heated to a temperature capable of plastic deformation by external force.
  • Eggplant is a method of forming curved glass.
  • the mold used for glass forming is made of a carbon material called graphite, which is inherently incapable of mirror processing at the level required for thermoformed glass surfaces due to its inherent properties.
  • graphite a carbon material
  • the pattern or shape of the mold surface is inevitably transmitted to the touch window glass.
  • glassy carbon cellulose furan resin, polycarbide resin and It is a pure carbon material obtained through a carbonization process performed in a high temperature environment of 1,000 to 3,000 ° C. after primary molding of the same thermosetting resin as a precursor, and refers to a non-graphitizable carbon material.
  • Korean Patent Publication No. 10-2012-0067409 (published: June 26, 2012) (hereinafter referred to as 'prior document 1') is manufactured by the carbonization process of the thermosetting resin, such as high temperature hardness and corrosion resistance
  • 'prior document 1' A method for producing a glassy carbon mold that can be used as a mold material of a glass molding press process has been proposed.
  • thermosetting resin is carbonized.
  • Main gases generated include, for example, water (vapor), CO 2, CO, CH 4 (methane), C 2 H 4 (ethylene) and H 2 (hydrogen) from the low temperature side.
  • This gas component is inevitably generated during the curing reaction, polycondensation reaction or pyrolysis reaction of the resin, which is a precursor of free carbon. Since the diffusion rate of these gases in the molded body during carbonization is not necessarily high, the internal pressure of the thermosetting resin molded body becomes high due to the generation of gas during carbonization.
  • the internal pressure exceeds a predetermined range, sometimes cracking may occur in the thermosetting resin molded body during carbonization, or the material itself may sometimes be broken.
  • carbonization is usually carried out at very low rate of temperature increase, for example 0.5 to 5 ° C./hour.
  • the material tends to break easily in the temperature range of about 400 ° C to 600 ° C. In this temperature range, the rate of temperature increase needs to be set carefully.
  • thermosetting resin molded article can be processed at a relatively high temperature increase rate, while a thick thermoset resin molded article must be carbonized at a lower temperature increase rate.
  • rate of temperature increase is considerably lowered, the productivity is markedly reduced, so that the maximum thickness of the thermosetting resin molded body carbonized is limited to about 7 mm.
  • the production of the glassy carbon mold has a problem that the thickness of the resin molded body cannot be arbitrarily selected to a larger value. That is, the thickness of the resin molding is limited as long as industrially practical temperature increase rate is adopted in consideration of productivity.
  • the upper limit of the thickness of a thermosetting resin molded object depends to some extent on a resin material and a manufacturing method, even if a specific method is used, it is about 10 mm and is usually about 7 mm.
  • Korean Patent Laid-Open No. 10-2007--0012242 (published date: January 25, 2007) (hereinafter referred to as 'prior document 2') is used to manufacture a glassy carbon molded body.
  • the thermosetting resin having a thickness greater than 10 mm is thick, for example, in contrast to the conventional method in which the upper limit of the resin molded article is, for example, 7 mm.
  • Prior Document 2 discloses only the distance condition between the vent holes formed on the surface of the thermosetting resin molded article without considering the problems such as warpage and warpage occurring during shrinkage of the thermosetting resin molded article. Even with the disclosed method, there is a problem that it is difficult to produce an excellent glassy carbon mold free from cracks and breakage from a thick thermosetting resin molded body of more than approximately 10 mm.
  • the present invention is to solve the above problems, by forming a slot-type vent hole to facilitate the discharge of gas generated during the production of glass carbon mold in the form of minimizing the occurrence of distortion and warpage due to shrinkage, cracks And a glassy carbon mold for glass molding capable of producing excellent glassy carbon mold with a thick thickness without damage, a master core mold for producing the glassy carbon mold, and a glassy carbon mold for glass molding for producing the glassy carbon mold.
  • An object of the present invention is to provide a manufacturing method.
  • the present invention is a glassy carbon mold for glass molding, which can be made precisely glassy carbon mold is made of a shape capable of improving the problem that the uniform shrinkage and warpage, warpage, etc. occur when manufacturing the glassy carbon mold, and the glassy carbon
  • An object of the present invention is to provide a master core mold for producing a mold and a method for producing a glassy carbon mold for glass molding capable of manufacturing the glassy carbon mold.
  • Glassy carbon mold for glass molding according to an embodiment of the present invention, the pattern forming surface on which a pattern to be transferred to the glass is formed; A contraction control unit extending outwardly of the pattern forming surface so that the outer shape of the glassy carbon mold has a circular shape; And a plurality of slot-type vent holes formed on the surface opposite to the pattern forming surface in a center direction from an edge of the glassy carbon mold.
  • the master core mold for manufacturing a glassy carbon mold for glass molding has a space in which the liquid thermosetting resin mixture liquid is injected for manufacturing the glassy carbon mold, the space is, A pattern forming surface forming region for forming a pattern forming surface on which a pattern to be transferred to glass is formed on an upper surface of the glassy carbon mold; A contraction control part forming area for forming a contraction control part extending outwardly from the pattern forming surface forming area to form a circular shape of the outer space of the space; And a slot-type ventilation hole forming area for forming a plurality of slot-type ventilation holes formed on the bottom surface of the glassy carbon mold in a center direction from an edge of the glassy carbon mold.
  • the slot type to smoothly discharge the gas generated during the manufacturing of the glassy carbon mold
  • the vent hole long in the center direction (or shrinkage direction) of the cured body, it is possible to minimize the occurrence of warpage and warpage caused by the shrinkage of the cured body generated during the production of the glassy carbon mold, thereby reducing the thickness of cracks and damage
  • the thick glass has an effect that can be made of excellent glassy carbon mold.
  • the master core mold and the glassy carbon mold manufacturing method according to an embodiment of the present invention by further forming a shrinkage control unit and a rib around the pattern forming surface, uniformity during the manufacturing of glassy carbon mold One shrinkage is possible, and problems such as warpage and warpage may be improved, and thus, an accurate glassy carbon mold may be manufactured.
  • FIG. 1 is a perspective view schematically showing a glassy carbon mold for glass molding according to an embodiment of the present invention
  • FIG. 2 is a cross-sectional view taken along line AA ′ of FIG. 1;
  • FIG. 3 is a plan view schematically illustrating a slot-type vent hole forming surface of the glassy carbon mold for glass molding according to FIG. 1;
  • FIG. 6 is a photograph showing a glassy carbon mold half-broken when a slotted vent hole is formed across the central region of the glassy carbon mold.
  • FIG. 7 to 9 are views showing whether wrinkles occur in the pattern forming surface according to the distance between the bottom surface of the slot-type vent hole and the surface of the glassy carbon mold according to an embodiment of the present invention.
  • FIG. 10 is a flowchart illustrating a method of manufacturing a glassy carbon mold for glass molding according to an embodiment of the present invention.
  • 11 and 12 are views showing a master core mold for manufacturing a glassy carbon mold for glass molding according to an embodiment of the present invention
  • FIG. 13 and 14 are views showing a master core mold for manufacturing a glassy carbon mold for glass molding according to another embodiment of the present invention.
  • Glass molds are molds that can be used as mold materials for glass molding presses due to their high temperature hardness and corrosion resistance.
  • shrinkage is generated uniformly when the gas is discharged by water and organic solvents contained in the liquid thermosetting resin mixture. Needs to be.
  • shrinkage occurs unevenly or warps during the manufacturing process of the glassy carbon mold, the size or surface quality of the pattern formed on the glassy carbon mold may not have high precision.
  • the present invention is formed in a slot-type vent hole to minimize the distortion and warpage due to the shrinkage of the slot-type vent hole to facilitate the discharge of gas generated during the production of glass carbon mold, uniform shrinkage is possible and the distortion and warpage
  • a glass carbon mold for glass molding which has a shape capable of improving the problem, a master core mold for producing the glassy carbon mold, and a glass carbon mold for manufacturing the glass carbon mold for manufacturing the glassy carbon mold will be.
  • FIG. 1 is a perspective view schematically showing a glassy carbon mold for glass molding according to an embodiment of the present invention
  • FIG. 2 is a sectional view taken along line AA ′ of FIG. 1
  • FIG. 3 is a slot of the glassy carbon mold for glass molding according to FIG. 1.
  • 4 and 5 are plan views schematically illustrating various embodiments of the slot type vent holes.
  • the glassy carbon mold 10 for glass molding has a pattern forming surface 12 and a pattern forming surface 12 on which a pattern to be transferred to glass is formed. It may include a shrinkage control unit 14 to extend to the outer shape of the glassy carbon mold 10 to form a circular shape, ribs 15 protruding upward and downward to the edge of the shrinkage control unit 14 to form a circular band shape. have.
  • the pattern to be transferred to the glass formed on the pattern forming surface 12 may be a convex or concave curved surface, or the central portion may be a flat shape and the edge is curved, or a certain shape is regularly repeated It may also be in the form, the present invention is not limited thereto.
  • the overall shape of the pattern forming surface 12 is shown to have a substantially rectangular shape, the present invention is not limited thereto, and may be circular, elliptical or polygonal.
  • the shape of the pattern forming surface 12 and the pattern to be transferred to the glass may not have a structure that is fully symmetrical in all directions such that uniform shrinkage occurs. Due to the shrinkage and warpage, it is very difficult to produce a precise glassy carbon mold.
  • the shrinkage control unit 14 is further extended to the area around the pattern forming surface 12 to form an outer portion of the glass-molded glass carbon mold 10.
  • the glass forming glass material may be formed even if the shape of the pattern to be transferred to the pattern forming surface 12 and the glass surface cannot have a structure that is completely symmetric in all directions so that uniform shrinkage occurs. In the manufacturing process of the carbon mold 10, the shrinkage may occur uniformly.
  • the glass shaping carbonaceous mold 10 according to the embodiment of the present invention further protrudes upward and downward on the edge of the shrinkage control part 14 to further form a rib 15 having a circular band shape.
  • the uniform shrinkage occurs and at the same time improves the problem of distortion and warpage.
  • the pattern forming surface 12 and the shrinkage control unit 14 may be kept at a predetermined interval by the rib 15. Both the pattern forming surface 12 and the shrinkage control unit 14 may be cured in contact with air, and thus, the difference in shrinkage rate due to contact with other members does not occur, so that the pattern forming surface 12 and the shrinkage control unit All 14 can be made uniform contraction.
  • the glassy carbon mold 10 for glass molding is formed between the pattern forming surface 12 and the shrinkage control unit 14 to guide the position of the pattern forming surface 12 during glass molding. It may further include (17).
  • the guide part 17 may be protruded between the pattern forming surface 12 and the contraction control part 14, or may be stepped so that the pattern forming surface 12 protrudes.
  • the glassy carbon mold 10 for glass molding according to the present invention may further include a cutting groove (not shown) formed between the guide portion 17 and the pattern forming surface 12. have.
  • the shrinkage control portion 14 and the rib portion 15 is a pattern forming surface 12 in order to cause a uniform shrinkage and to prevent distortion, etc. during the manufacturing of glass-forming glassy carbon mold 10 And as a configuration added to the region around the guide portion 17, the glass forming the glassy carbon mold 10 can be cut and removed when the manufacturing is completed, it can be cut based on the cutting groove (not shown).
  • the shrinkage control unit 14 and the rib 15 are cut and removed when the glass molding is unnecessary and need to be removed, and the shrinkage control unit 14 and the rib 15 are necessary for glass molding. If not or need not be removed may not be cut, the present invention is not limited thereto.
  • the glass-forming carbon mold 10 for glass molding may further include a plurality of slot-type vent holes 20 formed on the surface 11 opposite to the pattern forming surface 12.
  • the slot-type vent hole 20 is formed on the surface 11 opposite the pattern forming surface 12 to smoothly discharge the gas generated during the manufacturing of the glassy carbon mold 10, and is approximately 10 mm without cracks and damages. It is for the manufacture of excellent glassy carbon mold 10 with a thickness exceeding that.
  • the slot-type vent hole 20 is the glassy carbon mold 10. To be long in the center direction from the edge of the parallel to the contraction direction should be formed to minimize the occurrence of distortion or warpage occurs during contraction.
  • the plurality of slot-type vent holes 20 may be arranged in the circumferential direction so as to be symmetrical with respect to the center of the glassy carbon mold 10.
  • the slot-type vent hole 20 may be formed so as not to cross the center region 13 of the glassy carbon mold 10, and for this purpose, the length of the slot-type vent hole 20 may be a glassy carbon mold 10. It may be formed smaller than the radius of).
  • FIG. 6 is a photograph showing a glassy carbon mold in a split state in half when a slotted vent hole is formed across the central region of the glassy carbon mold.
  • the glassy carbon mold 10 may be deformed due to warpage and warpage generated during contraction. It can be split in half about the slot-type vent hole 20 formed across.
  • the slotted vent hole 20 may be formed so as not to cross the central region 13 of the glassy carbon mold 10.
  • the length of the slotted vent hole 20 is a glassy carbon mold 10. It is preferably formed smaller than the radius of).
  • FIG. 7 to 9 are views showing whether wrinkles occur in the pattern forming surface according to the distance between the bottom surface of the slot-type vent hole and the surface of the glassy carbon mold according to an embodiment of the present invention
  • Figure 7 is a present invention 8 is a partially enlarged cross-sectional view of a slotted vent hole according to an embodiment of the present invention
  • FIG. 8 is a photograph showing a surface opposite to the pattern forming surface of the glassy carbon mold having the slotted vent hole
  • FIG. 9 is a pattern forming surface side surface of the glassy carbon mold. It is a photograph showing.
  • the inventors found that the distance d between the bottom surface 21 of the slot-shaped vent hole 20 and the surface 19 of the patterned surface 12 side of the glassy carbon mold 10 is different. Depth w (depth from the surface 11 opposite the pattern forming surface 12 of the glassy carbon mold 10) in order to check whether wrinkles occur on the surface 19 of the pattern forming surface 12 according to the present invention. , A total of seven slots (A, B, C, D, E, F, G) slot-shaped vent holes 20 different in length and position were formed, wherein the thickness t of the glassy carbon mold 10 was 10 mm. Formed.
  • each of the seven slot-type vent holes 20 is the bottom surface 21 of each of the slot-type vent holes 20 and the surface of the pattern forming surface 12 of the glassy carbon mold 10.
  • the distance (d) from (19) was 4 mm (A, B, G), 3.5 mm (C, D, F), and 3 mm (E).
  • the appearance of wrinkles on the surface 19 is as follows.
  • the distance d between the bottom surface 21 of the slotted vent hole 20 and the surface 19 of the pattern forming surface 12 side of the glassy carbon mold 10 d (E) is 3 mm, the slot on the pattern forming surface 12 side surface 19 facing the surface 11 opposite the pattern forming surface 12 on which the slotted vent hole E is formed It can be seen that wrinkles are generated by digging as a whole along the type vent hole (E 'region in FIG. 9).
  • the pattern forming surface 12 side facing the surface 11 opposite to the pattern forming surface 12 on which the slotted vent hole D is formed It can be seen on the surface 19 that wrinkles occur by locally denting along the slotted vent hole D (region D 'in FIG. 9).
  • the glassy carbon mold There is a problem that wrinkles may occur in the surface 19 on the pattern forming surface 12 side (10).
  • the surface forming side of the patterned surface 12 of the glassy carbon mold 20 is formed by forming the slotted vent hole 20 on the surface 11 opposite the patterning surface 12 of the glassy carbon mold 20.
  • the distance d between the bottom surface 21 of the slot-type vent hole 20 and the surface 19 on the pattern-forming surface 12 side of the glassy carbon mold 20 is 4 mm or more. It will be preferable to form.
  • FIG. 10 is a flowchart illustrating a method of manufacturing a glassy carbon mold for glass molding according to an embodiment of the present invention.
  • the method for manufacturing a glassy carbon mold for glass molding may include preparing a master core mold (S7), a thermosetting liquid injection step (S10), a first curing step (S20), Curing body separation step (S30), secondary curing step (S40), slot-type vent hole forming step (S70), a carbonization process performing step (S50), may include a cutting step (S60).
  • the master core mold preparation step (S7) is a step of preparing a master core mold for manufacturing the glassy carbon mold 10 for glass molding as described above, wherein the master core mold is for manufacturing the glassy carbon mold 10. It may have a space inside the liquid thermosetting liquid mixture is injected. Detailed description of the master core mold will be described later.
  • thermosetting mixed liquid injection step (S10) is a step of injecting the liquid thermosetting resin mixed liquid into the inner space of the master core mold.
  • the liquid thermosetting resin mixture for preparing the glassy carbon mold 10 may be a liquid thermosetting resin mixture containing an organic solvent in which a curing catalyst is dissolved and a thermosetting resin.
  • the thermosetting resin may include a thermosetting resin capable of forming glassy carbon in a polymerization, curing, and carbonization process such as cellulose, furan resin, phenol resin, and polycarbodiimide resin.
  • the catalyst hardener may include an acid catalyst such as para-toluenesulfonic acid monohydrate (CH 3 C 6 H 4 SO 3 HH 2 O, PTSA), ZnCl 2, citric acid, and the like.
  • the cured body may include a base catalyst such as sodium hydroxide, potassium hydroxide, ammonia, amines, and the like.
  • the catalyst cured body may include 0.1 parts by weight to 0.6 parts by weight based on 100 parts by weight of the thermosetting resin.
  • the organic solvent may include solvents such as alcohols such as methanol and ethanol, ketones such as acetone, and aromatics such as toluene.
  • the primary curing step (S20) is a step of first curing the liquid thermosetting resin mixture liquid by heating the master core mold in which the liquid thermosetting resin mixture is injected, and the separation of the cured body (S30) is the primary curing Separating the cured body from the master core mold.
  • the primary curing step (S20) may be made in the range of approximately 30 ⁇ 80 °C higher than room temperature.
  • the normal temperature is the normal temperature in daily life, in the case of Korea may mean about 30 °C in summer, about 15 °C in winter. That is, in the present invention, the normal temperature may be defined to mean approximately 15 to 30 °C. However, the present invention is not limited thereto, and all of them may be included in the range of room temperature according to the present invention as long as it is a normal temperature in daily life without heating and cooling.
  • the secondary curing step (S40) is a step of secondary curing the separated cured body by heating the first cured cured body separated in the cured body separation step (S30), the carbonization process performing step (S50)
  • the second hardened cured product is carbonized by heating to a carbonization temperature (about 300 to 400 ° C. or higher).
  • the secondary curing step (S40) is a step of heating in advance before the carbonized the separated cured, it can be carried out by heating the separated cured to about 70 ⁇ 200 °C.
  • the carbonization process performing step (S50) may be performed by raising the secondary cured cured body to approximately 1,000 ° C. to 3,000 ° C. above a carbonizable temperature.
  • the glass-forming carbon mold 10 and 20 for glass molding as described above may be completed.
  • the cutting step (S60) is a step of cutting the carbonized glassy carbon mold after the carbonization process performing step (S50).
  • Step S60 may be performed when the shrinkage control unit 14 and the rib unit 15 of the glassy carbon mold 10 for glass molding are unnecessary parts during glass molding, and the shrinkage control unit 14 and the rib unit 15 may be removed. It is a step of cutting by cutting.
  • the glass groove may be cut based on a cutting groove (not shown) formed between the guide part 17 and the rib part 15 of the glassy carbon mold 10.
  • a method of manufacturing a glass-forming carbonaceous carbon mold includes processing a plurality of slot-type vent holes 20 formed in the secondary cured cured body elongated in the center direction from an edge of the cured body. Slot type through-hole processing step (S70) may be further included.
  • the slot-type vent hole processing step (S70), the slot-type vent hole 20 is arranged in the circumferential direction in a symmetrical state with respect to the center of the glassy carbon mold 20 Plural can be processed.
  • the length of the slot-type vent hole 20 is glassy so that the slot-type vent hole 20 does not cross the central region 13 of the glassy carbon mold 10. It can process smaller than the radius of the carbon die 10.
  • the slot-type vent hole processing step (S70) is a distance d between the bottom surface 21 of the slot-type vent hole 20 and the surface 19 of the pattern forming surface 12 side of the glassy carbon mold 10 d. ) Can be processed to the slot-type vent hole 20 to be 4mm or more.
  • FIG. 11 is a view showing a master core mold for manufacturing a glassy carbon mold for glass molding according to an embodiment of the present invention
  • Figure 12 is a cured body of the liquid thermosetting resin mixture is first cured when manufacturing a glassy carbon mold for glass molding Is a view schematically showing a state of separating from the master core mold according to FIG.
  • the master core mold 100 for manufacturing a glassy carbon mold for glass molding according to an embodiment of the present invention is injected with a liquid thermosetting resin mixture solution for manufacturing the glassy carbon mold 10. It can have a space 102 to be inside.
  • the space 102 includes a pattern forming surface forming region 104 for forming a pattern forming surface 12 having a pattern to be transferred to glass on at least one of an upper surface and a bottom surface, and an edge of the pattern forming surface forming region 104.
  • An injection hole 108 may be formed at one side of the space 102 to inject the liquid thermosetting resin mixture into the space 102.
  • the master core mold 100 having the space 102 covers the body mold 110 and one side of the hole 112 in which holes 112 for forming the space 102 are formed. At least one of an upper surface and a bottom surface of the first cover mold 120, the second cover mold 130 covering the other side of the hole 112 to form the space 102, and the pattern forming surface forming region 104. It may include a pattern forming unit 140 to be coupled to at least one end of the first cover mold 120 and the second cover mold 130 to be formed in.
  • an injection hole 108 for injecting the liquid thermosetting resin mixture into the space 102 may be formed at one side of the body mold 110.
  • the present invention is not limited to the installation position of the injection hole 108, the injection hole 108 may be formed at a position different from that shown in the drawings, the first cover mold 120 or / and the second cover mold 130 may be formed between the body mold 110 and the first cover mold 120 and / or between the body mold 110 and the second cover mold 130.
  • the pattern forming unit 140 may be a pattern to be formed on the glass-forming glassy carbon mold 10 on the opposite surface of the coupling surface to be coupled to any one end.
  • the primary cured cured body 150 may be easily separated from the master core mold 100, and in particular, the pattern forming surface transferred to the primary cured cured body 150 ( It is easy to separate the surface of 152 from the surface of the master core mold 100 first.
  • the first cured cured body to which the pattern of the pattern forming unit 140 is transferred by first separating the first cover mold 120 to which the pattern forming unit 140 is coupled, the first cured cured body to which the pattern of the pattern forming unit 140 is transferred.
  • the pattern forming surface 152 of 150 may be easily separated from the surface of the master core mold 100 first and then the second cover mold 130 and the body mold 110 are sequentially cured. It can be easily separated from the cured body.
  • the pattern forming unit 140 may be made of a silicon material.
  • the body mold 110, the first cover mold 120, and the second cover mold 130 may be made of a material having good releasability and the first cured cured body 150, such as a plastic having a hardness greater than that of a silicon material. have.
  • the pattern forming unit 140 in which the pattern is formed may be easily manufactured using a silicon material. Furthermore, after using the master core mold 100, only the pattern forming unit 140 may be separated from the first cover mold 120. By removing and attaching the new pattern forming unit 140 to the first cover mold 120 again, the master core mold 100 may be reused.
  • the master core mold 100 is made of a silicon material that is easy to form a pattern, the pattern is difficult to reuse because the surface contamination is deepened and damage occurs during reuse.
  • the pattern forming unit 140 in which the pattern is formed is used in combination with the first cover mold 120, a new pattern forming unit 140 is used after use. It is possible to reduce the cost because it can be reused.
  • the slot-type vent hole 20 is formed by a separate machining operation in the slot-type vent hole processing step (S70) after the secondary curing step (S40)
  • the slot-type vent hole 20 may be directly formed without additional processing in the thermosetting resin mixture injection step S10 of injecting the thermosetting resin mixture into the master core mold 100.
  • FIG. 13 is a view showing a master core mold for manufacturing a glassy carbon mold for glass molding according to another embodiment of the present invention
  • FIG. 14 is a cured body in which a liquid thermosetting resin mixture is first cured when preparing a glassy carbon mold for glass molding. Is a view schematically showing a state of separating from the master core mold according to FIG. 13.
  • the master core mold 100 according to the present embodiment is to allow the slot-type vent hole 20 to be directly formed in the thermosetting resin mixture solution injection step S10 without additional processing.
  • the master core mold according to the embodiment Since the difference is only in that it has a configuration for forming the slotted vent hole 20 compared to the 100, reference numerals and detailed descriptions for other components used reference numerals and detailed description in the above embodiment do.
  • the space 102 of the master core mold 100 is elongated in the center direction from the edge of the glassy carbon mold 10 to the bottom surface of the glassy carbon mold 10.
  • the apparatus may further include a slotted vent hole forming area 106 for forming a plurality of slotted vent holes 20 to be formed.
  • the master core mold 100 having the space 102 includes a body mold 110 having a hole 112 formed therein for forming the space 102 and one side of the hole 112.
  • a first cover mold 120 having a pattern forming unit 140 for forming a pattern forming surface 12 on the bottom thereof, and covering the other side of the hole 112 to form the space 102.
  • the second cover mold 130 is provided with a plurality of protrusions 134 for forming the plurality of slot-type ventilation holes 20 in the.
  • the present invention is formed in a slot-type vent hole to minimize the distortion and warpage due to the shrinkage of the slot-type vent hole to facilitate the discharge of gas generated during the production of glassy carbon mold, uniform shrinkage and distortion Glass carbon mold for glass molding, and a master core mold for producing the glassy carbon mold, and glassy carbon for glass molding for producing the glassy carbon mold.
  • the present invention relates to a method for manufacturing a mold, and the embodiment may be modified in various forms. Therefore, the present invention is not limited to the embodiments disclosed in the present specification, and all forms changeable by those skilled in the art to which the present invention pertains will belong to the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

La présente invention concerne un moule de carbone vitreux pour moulage de verre, un moule de noyau maître pour fabriquer un moule de carbone vitreux pour moulage de verre, et un procédé de fabrication d'un moule de carbone vitreux pour le moulage de verre et, en particulier : un moule de carbone vitreux pour mouler du verre, qui a un trou d'évent de type fente formé à travers une surface de celui-ci de telle sorte que le gaz généré pendant la fabrication d'un moule de carbone vitreux peut être déchargé sans à-coups; un moule de noyau maître pour fabriquer le moule de carbone vitreux; et un procédé pour un moule de carbone vitreux pour moulage de verre, par lequel le moule de carbone vitreux peut être fabriqué.
PCT/KR2018/001489 2018-02-05 2018-02-05 Moule de carbone vitreux pour moulage de verre, moule de noyau maître pour fabriquer un moule de carbone vitreux pour moulage de verre, et procédé de fabrication de moule de carbone vitreux pour moulage de verre WO2019151554A1 (fr)

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PCT/KR2018/001489 WO2019151554A1 (fr) 2018-02-05 2018-02-05 Moule de carbone vitreux pour moulage de verre, moule de noyau maître pour fabriquer un moule de carbone vitreux pour moulage de verre, et procédé de fabrication de moule de carbone vitreux pour moulage de verre

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Citations (5)

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Publication number Priority date Publication date Assignee Title
KR101105500B1 (ko) * 2010-02-25 2012-01-13 최진근 주조용 금형의 가스배출 벤트
KR20130088080A (ko) * 2012-01-30 2013-08-07 중앙대학교 산학협력단 유리질 탄소 몰드의 제조 방법
KR20140130344A (ko) * 2013-04-30 2014-11-10 중앙대학교 산학협력단 급속 가열 방식의 미세 패턴 형성을 위한 유리질 탄소 몰드 및 그 제조 방법과 이를 이용하는 미세 패턴 형성 방법
JP2017149615A (ja) * 2016-02-25 2017-08-31 イビデン株式会社 ガラス成形型および曲面ガラスの製造方法
KR20170131128A (ko) * 2016-05-20 2017-11-29 임홍주 3ｄ 유리 성형장치 및 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101105500B1 (ko) * 2010-02-25 2012-01-13 최진근 주조용 금형의 가스배출 벤트
KR20130088080A (ko) * 2012-01-30 2013-08-07 중앙대학교 산학협력단 유리질 탄소 몰드의 제조 방법
KR20140130344A (ko) * 2013-04-30 2014-11-10 중앙대학교 산학협력단 급속 가열 방식의 미세 패턴 형성을 위한 유리질 탄소 몰드 및 그 제조 방법과 이를 이용하는 미세 패턴 형성 방법
JP2017149615A (ja) * 2016-02-25 2017-08-31 イビデン株式会社 ガラス成形型および曲面ガラスの製造方法
KR20170131128A (ko) * 2016-05-20 2017-11-29 임홍주 3ｄ 유리 성형장치 및 방법

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