Method for producing composite molded component, and composite molded component

Patent metadata

Field	Value
Publication number	US-2023117526-A1
Application number	US-202117907006-A
Country	US
Kind code	A1
Filing date	Mar 2, 2021
Priority date	Mar 23, 2020
Publication date	Apr 20, 2023
Grant date	—

Abstract

A method for producing a composite molded component that includes an internal component, a primary molded portion covering the internal component, and a secondary molded portion covering the primary molded portion, wherein a rib portion that protrudes toward the secondary molded portion, the method including the steps of: (a) placing an intermediate component including the internal component and the primary molded portion in a mold; (b) pouring a resin for forming the secondary molded portion into the mold; (c) detecting a resin temperature of the resin in the mold; (d) determining, based on the resin temperature, a melting time during which the resin in the mold can be molten and fused to the rib portion of the primary molded portion; (e) determining, based on the melting time, whether a molten state of the rib portion is good or poor; and (f) releasing the composite molded component from the mold.

First claim

1 . A method for producing a composite molded component that includes an internal component, a primary molded portion that covers the internal component, and a secondary molded portion that covers the primary molded portion, wherein a rib portion that protrudes toward the secondary molded portion is formed in the primary molded portion, the method comprising the steps of:
(a) placing an intermediate component that includes the internal component and the primary molded portion in a mold; (b) pouring a resin for forming the secondary molded portion into the mold; (c) detecting a resin temperature of the resin for forming the secondary molded portion in the mold; (d) determining, based on the resin temperature, a melting time during which the resin for forming the secondary molded portion in the mold can be molten and fused to the rib portion of the primary molded portion; (e) determining, based on the melting time, whether a molten state of the rib portion is good or poor; and (f) releasing the composite molded component from the mold.

2 . The method for producing a composite molded component according to claim 1 , further comprising the step of:
(g) when it is determined in the step (f) that the molten state of the rib portion is poor, discarding the composite molded component that has been released from the mold.

3 . The method for producing a composite molded component according to claim 1 , further comprising the step of:
(h) when it is determined that the molten state of the rib portion is poor, changing a molding condition for next molding.

4 . The method for producing a composite molded component according to claim 1 , wherein, in the step (e), whether the molten state of the rib portion is good or poor is determined based on an integral value of the resin temperature during the melting time.

5 . The method for producing a composite molded component according to claim 1 , further comprising the step of:
(i) determining, based on a first temperature sensor and a second temperature sensor that are provided spaced apart from each other in the mold, a resin inflow rate of the resin for forming the secondary molded portion into the mold.

6 . The method for producing a composite molded component according to claim 1 , further comprising the step of:
(j), determining, based on the resin temperature of the resin for forming the secondary molded portion in the mold, whether or not the internal component satisfies a thermal condition.

7 . The method for producing a composite molded component according to claim 1 , wherein, in the step (c), the resin temperature of the resin for forming the secondary molded portion in the mold is a temperature of an extension of a surface of a portion of the resin for forming the secondary molded portion that covers the rib portion.

8 . The method for producing a composite molded component according to claim 1 , further comprising the step of:
(k) determining a feeding state of the resin for forming the secondary molded portion into the mold based on a pressure sensor that is provided in a mold surface of the mold at a position that is closer to an end of the mold and spaced apart from a resin injection inlet for injecting the resin for forming the secondary molded portion.

9 . A composite molded component comprising:
an internal component; a primary molded portion that covers the internal component; and a secondary molded portion that covers the primary molded portion, wherein a rib portion that protrudes toward the secondary molded portion is formed in the primary molded portion, and a sensor mark is formed on a surface of the secondary molded portion.

10 . The composite molded component according to claim 9 ,
wherein the sensor mark includes a first sensor mark and a second sensor mark that are formed at positions spaced apart from each other on the surface of the secondary molded portion.

11 . The composite molded component according to claim 9 , wherein a resin injection inlet mark is formed on the surface of the secondary molded portion, and
an end portion sensor mark is formed in the surface of the secondary molded portion at a position that is closer to an end of the secondary molded portion and spaced apart the resin injection inlet mark.

Assignees

• Sumitomo Wiring Systems

Inventors

• Nishiguchi Takashi
• Kim Kyungwoo
• Kobayashi Toshinari
• JEONG Yeonsol
• Terasaka Yukitoshi

Classifications

• G01F1/7044 Primary

  using thermal tracers · CPC title

• G01F1/7084

  using thermal detecting arrangements · CPC title

• B29C45/14

  incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles {(B29C45/1671 takes precedence)} · CPC title

• B29C45/78 Primary

  of temperature · CPC title

• B29C2945/7604

  Temperature · CPC title