Method for manufacturing molding mold and molding mold

Patent metadata

Field	Value
Publication number	US-11951676-B2
Application number	US-202117457687-A
Country	US
Kind code	B2
Filing date	Dec 6, 2021
Priority date	Dec 7, 2020
Publication date	Apr 9, 2024
Grant date	Apr 9, 2024

Abstract

A method for manufacturing a molding mold used in an injection molding apparatus includes: generating a first plasticized material by plasticizing a first shaping material containing an amorphous metal and a resin; and shaping a laminate that is a part of the molding mold by discharging the first plasticized material toward a stage to laminate a layer.

First claim

What is claimed is:

1. A method for manufacturing a molding mold used in an injection molding apparatus, the method comprising:
generating a first plasticized material by plasticizing a first shaping material containing an amorphous metal and a resin; and
shaping a laminate that is a part of the molding mold by discharging the first plasticized material toward a stage to laminate a layer,
wherein the first shaping material is in pellet form and the amorphous metal is spherical, and
wherein the shaping the laminate by discharging the first plasticized material includes discharging the first plasticized material toward a base plate provided on the stage to laminate the layer on the base plate, forming a cavity by cutting the laminate, and forming the mold by fitting the base plate on which the laminate is shaped into a recess provided in a master mold.

2. The method for manufacturing a molding mold according to claim 1 , wherein
a content of the amorphous metal in the first shaping material is 1 vol % or more and 40 vol % or less.

3. The method for manufacturing a molding mold according to claim 1 , wherein
a main component of the amorphous metal is iron, and
a particle size of the amorphous metal is 5 μm or more and 100 μm or less.

4. The method for manufacturing a molding mold according to claim 1 , wherein
in the generating of the first plasticized material, the first plasticized material is generated using a flat screw.

5. The method for manufacturing a molding mold according to claim 1 , further comprising:
generating a second plasticized material by plasticizing a second shaping material in which a content of the amorphous metal is different from that of the first shaping material, wherein
in the shaping of the laminate,
the first plasticized material and the second plasticized material are discharged to shape a laminate in which the first plasticized material and the second plasticized material are present in the same layer, or a laminate in which the first plasticized material and the second plasticized material are present separately at different layers.

6. The method for manufacturing a molding mold according to claim 5 , wherein
the same layer or the different layers are in contact with the cavity.

7. The method for manufacturing a molding mold according to claim 1 , wherein
in the shaping of the laminate, a laminate having a cooling pipe is shaped.

8. The method for manufacturing a molding mold according to claim 1 , wherein a thermal conductivity of the laminate is 0.20 W/mK or more and 10.0 W/mK or less.

9. The method for manufacturing a molding mold according to claim 1 , wherein a thermal conductivity of the laminate is 0.30 W/mK or more and 0.80 W/mK or less.

10. The method for manufacturing a molding mold according to claim 1 , wherein an elastic modulus difference ratio of the laminate is 80% or more and 120% or less, wherein the elastic modulus difference ratio of the laminate is calculated by the following formula (1),
R=E 1/ E 2×100  (1)

where R represents the elastic modulus difference ratio, E1 represents an elastic modulus of the laminate in a direction perpendicular to a direction of stacking of the layer, E2 represents an elastic modulus of the laminate in the direction of stacking of the layer, and units of E1 and unit of E2 are the same.

11. The method for manufacturing a molding mold according to claim 1 , wherein a content of the amorphous metal in the first shaping material is 1 vol % or more and 40 vol % or less,
a thermal conductivity of the laminate is 0.20 W/mK or more and 10.0 W/mK or less,
an elastic modulus difference ratio of the laminate is 80% or more and 120% or less, wherein the elastic modulus difference ratio of the laminate is calculated by the following formula (1),
R=E 1/ E 2×100  (1)

where R represents the elastic modulus difference ratio, E1 represents an elastic modulus of the laminate in a direction perpendicular to a direction of stacking of the layer, E2 represents an elastic modulus of the laminate in the direction of stacking of the layer, and units of E1 and unit of E2 are same.

12. A method for manufacturing a molding mold used in an injection molding apparatus, the method comprising:
generating a first plasticized material by plasticizing a first shaping material containing an amorphous metal and a resin; and
shaping a laminate that is a part of the molding mold by discharging the first plasticized material toward a stage to laminate a layer,
wherein in the generating of the first plasticized material, the first plasticized material is generated using a plasticizing device having a screw and a barrel, the screw rotates around a rotational axis, and has a grooved surface on which a groove is formed, a length of the screw in a direction along the rotational axis is shorter than a length of the screw in a direction perpendicular to the rotational axis, and the barrel has a facing surface facing the grooved surface in the direction along the rotational axis.

13. A method for manufacturing a molding mold used in an injection molding apparatus, the method comprising:
generating a first plasticized material by plasticizing a first shaping material containing an amorphous metal and a resin; and
shaping a laminate that is a part of the molding mold by discharging the first plasticized material toward a stage to laminate a layer,
wherein in the generating of the first plasticized material, the first plasticized material is generated using a flat screw.

Assignees

• Seiko Epson Corp

Inventors

• Anegawa Kenta
• Tsuboi Tatsuya
• Akahane Fumiaki
• Wakuda Yuka

Classifications

• B29C64/118 Primary

  using filamentary material being melted, e.g. fused deposition modelling [FDM] · CPC title

• B29C33/3842 Primary

  Manufacturing moulds, e.g. shaping the mould surface by machining · CPC title

• B29C45/26

  Moulds · CPC title

• B29C64/30

  Auxiliary operations or equipment · CPC title

• B33Y10/00 Primary

  Processes of additive manufacturing · CPC title