Molded part, manufacturing method of molded part and mold

Patent metadata

Field	Value
Publication number	US-10828812-B2
Application number	US-201615156578-A
Country	US
Kind code	B2
Filing date	May 17, 2016
Priority date	May 25, 2015
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

A molded part including a first member having a plurality of openings and a second member contacting with a peripheral edge of each of the plurality of openings so as to cover the openings, and having a hollow portion formed by sealing the contact portion with a sealing material, wherein: the second member defines a flow channel for filling the sealing material between the first member and the second member; the second member has a branched shape in which sections corresponding to positions covering the plurality of openings are branched from each other, and portions near a gate of the flow channel are connected as a common section; and the branched shape has a bridge structure for connecting the respective branched sections.

First claim

What is claimed is:

1. A molded part, comprising:
a first component including a plurality of chambers and a plurality of openings, each of the chambers having an opening;
a second component formed of a primary resin, the second component having a plurality of sections corresponding to the plurality of openings respectively and contacting a plurality of peripheral edges of the plurality of openings so that each of the sections covers a corresponding opening; and
a sealing material formed of a secondary resin, which seals a plurality of contact portions between the plurality of peripheral edges and the second component,
wherein the second component has a plurality of bridge structures, each of which connects two adjacent sections among the plurality of sections.

2. The molded part according to claim 1 , wherein the molded part is a liquid supply member of an inkjet print head capable of ejecting liquid from a plurality of ejection ports, and
wherein each of the plurality of chambers forms a supply channel through which the liquid is supplied to the inkjet print head.

3. The molded part according to claim 1 , wherein the plurality of openings of the first component and the plurality of sections of the second component are formed into an array.

4. The molded part according to claim 1 , wherein the sealing material is fed into a flow channel formed between the first component and the second component along the plurality of peripheral edges.

5. The molded part according to claim 1 , wherein the sealing material is fed into a flow channel formed between the first component and an inner surface of a mold along the plurality of peripheral edges.

Assignees

• Canon Kk

Inventors

• Iwano Takuya
• Yamaguchi Yukuo
• Umeyama Mikiya
• Oikawa Satoshi
• Amma Hiromasa
• Kimura Satoshi
• Tsujiuchi Naoko
• Iijima Yasushi
• Toda Kyosuke

Classifications

• B29C45/0062 Primary

  Joined by injection moulding · CPC title

• B29C2045/0063

  facing before assembling, i.e. bringing the parts opposite to each other before assembling · CPC title

• B29C45/33

  having transversely, e.g. radially, movable mould parts · CPC title

• B29L2031/767

  Printing equipment or accessories therefor · CPC title

• B29C2045/2683

  Plurality of independent mould cavities in a single mould · CPC title