Method for manufacturing molded member and liquid ejecting head, liquid ejecting head, and mold

Patent metadata

Field	Value
Publication number	US-2016347066-A1
Application number	US-201615156583-A
Country	US
Kind code	A1
Filing date	May 17, 2016
Priority date	May 25, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

There is provided a method for manufacturing a molded member having a hollow part. The method comprises a step for molding the hollow part by extracting a first piece, a second piece, a third piece and a fourth piece of a mold in four different directions. The second piece has an elongated shape in its extracting direction, the second piece and the fourth piece have extracting directions substantially opposed to each other, and at the molding, each of the first piece, the second piece, the third piece and the fourth piece abuts on at least one of the first piece, the second piece, the third piece and the fourth piece.

First claim

What is claimed is:

1 . A method for manufacturing a molded member having a hollow part, the method comprising:
a step for molding the hollow part by extracting a first piece, a second piece, a third piece and a fourth piece of a mold in four different directions, wherein the second piece has an elongated shape in its extracting direction, the second piece and the fourth piece have extracting directions substantially opposed to each other, and at the molding, each of the first piece, the second piece, the third piece and the fourth piece abuts on at least one of the first piece, the second piece, the third piece and the fourth piece.

2 . A method for manufacturing a liquid ejecting head including a print element having an ejecting unit configured to eject a liquid and a liquid chamber for supplying the liquid to the print element, wherein a housing provided with the liquid chamber is formed by a molded member, the method comprising:
a step for molding the liquid chamber by extracting a first piece, a second piece, a third piece and a fourth piece of a mold in four different directions, wherein the second piece has an elongated shape in its extracting direction, the second piece and the fourth piece have extracting directions substantially opposed to each other, and at the molding, each of the first piece, the second piece, the third piece and the fourth piece abuts on at least one of the first piece, the second piece, the third piece and the fourth piece.

3 . The method for manufacturing a liquid ejecting head according to claim 2 ,
wherein the first piece and the third piece have extracting directions substantially opposed to each other, and at the molding, respectively abut on the second piece, a filter is disposed in an opening part formed by extracting the first piece, an opening part formed by extracting the second piece is closed by a first lid member, and an opening part formed by extracting the fourth piece is closed by a second lid member.

4 . The method for manufacturing a liquid ejecting head according to claim 2 ,
wherein an abutting surface between the second piece and the fourth piece is inclined to a direction of extracting the second piece.

5 . The method for manufacturing a liquid ejecting head according to claim 2 ,
wherein the liquid ejecting head comprises a plurality of the liquid chambers, the plurality of liquid chambers are arrayed in parallel in a direction substantially perpendicular to the extracting directions of the second piece and the fourth piece of the mold, and the second piece and the fourth piece for molding at least a liquid chamber positioned in the outermost side of the plurality of liquid chambers include fitting parts fitted to each other.

6 . The method for manufacturing a liquid ejecting head according to claim 5 ,
wherein an abutting area between the third piece and the second piece is smaller than an abutting area between the first piece and the second piece, and the fitting part is disposed in the vicinity of the third piece.

7 . The method for manufacturing a liquid ejecting head according to claim 5 ,
wherein the fitting part of the second piece includes a circular pin, and the fitting part of the fourth piece includes a circular hole.

8 . The method for manufacturing a liquid ejecting head according to claim 5 ,
wherein the fitting part of the second piece includes an oval pin, and the fitting part of the fourth piece includes an oval hole.

9 . The method for manufacturing a liquid ejecting head according to claim 5 ,
wherein the first piece and the third piece are positioned in a relation in which a center axis of an abutting part of the first piece and a center axis of an abutting part of the third piece on the second piece are respectively positioned not to be on the same straight line, and the fitting part is arranged outside of the two center axes.

10 . The method for manufacturing a liquid ejecting head according to claim 3 ,
wherein the liquid chamber is formed by a first step for forming the housing, the first lid member and the second lid member respectively by injection molding, a second step for performing abutting between the housing and the first lid member, and abutting between the housing and the second lid member, and a third step for filling sealing materials in between abutting parts of the housing and the first lid member, and in between abutting parts of the housing and the second lid member to joint the abutting parts, wherein the first to third steps are sequentially executed in the same mold.

11 . A liquid ejecting head including a print element having an ejecting unit configured to eject a liquid and a liquid chamber for supplying the liquid to the print element, wherein a housing provided with the liquid chamber is formed by a molded member, the liquid ejecting head being manufactured by a method comprising:
a step for molding the liquid chamber by extracting a first piece, a second piece, a third piece and a fourth piece of a mold in four different directions, wherein the second piece has an elongated shape in its extracting direction, the second piece and the fourth piece have extracting directions substantially opposed to each other, and at the molding, each of the first piece, the second piece, the third piece and the fourth piece abuts on at least one of the first piece, the second piece, the third piece and the fourth piece.

12 . A mold comprising a first piece, a second piece, a third piece and a fourth piece and used for a method for manufacturing a molded member having a hollow part, the method comprising:
a step for molding the hollow part by extracting the first piece, the second piece, the third piece and the fourth piece of the mold in four different directions, wherein the second piece has an elongated shape in its extracting direction, the second piece and the fourth piece have extracting directions substantially opposed to each other, and at the molding, each of the first piece, the second piece, the third piece and the fourth piece abuts on at least one of the first piece, the second piece, the third piece and the fourth piece.

Assignees

• Canon Kk

Inventors

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

Classifications

• B41J2/1621

  Manufacturing processes · CPC title

• B41J2/01

  Ink jet · CPC title

• B29C45/33

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

• B29L2031/767

  Printing equipment or accessories therefor · CPC title

• B29C45/26

  Moulds · CPC title