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

Patent metadata

Field	Value
Publication number	US-9764554-B2
Application number	US-201615156583-A
Country	US
Kind code	B2
Filing date	May 17, 2016
Priority date	May 25, 2015
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

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 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,
wherein the second piece and the fourth piece have extracting directions substantially opposed to each other,
wherein, 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,
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,
wherein a filter is disposed in an opening part formed by extracting the first piece,
wherein an opening part formed by extracting the second piece is closed by a first lid member, and
wherein an opening part formed by extracting the fourth piece is closed by a second lid member.

2. The method according to claim 1 , wherein an abutting surface between the second piece and the fourth piece is inclined to a direction of extracting the second piece.

3. The method according to claim 1 ,
wherein the liquid ejecting head comprises a plurality of liquid chambers,
wherein 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
wherein the second piece and the fourth piece for molding at least a liquid chamber positioned in an outermost side of the plurality of liquid chambers include fitting parts fitted to each other.

4. The method according to claim 1 ,
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 join the abutting parts, and
wherein the first to third steps are sequentially executed in the same mold.

5. 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,
wherein the second piece and the fourth piece have extracting directions substantially opposed to each other,
wherein, 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,
wherein the liquid ejecting head comprises a plurality of liquid chambers,
wherein 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,
wherein the second piece and the fourth piece for molding at least a liquid chamber positioned in an outermost side of the plurality of liquid chambers include fitting parts fitted to each other,
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
wherein the fitting part is disposed in a vicinity of the third piece.

6. The method according to claim 3 ,
wherein the fitting part of the second piece includes a circular pin, and
wherein the fitting part of the fourth piece includes a circular hole.

7. The method according to claim 3 ,
wherein the fitting part of the second piece includes an oval pin, and
wherein the fitting part of the fourth piece includes an oval hole.

8. The method according to claim 3 ,
wherein the first piece and the third piece are positioned in a relation in which a first center axis of an abutting part of the first piece and a second 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
wherein the fitting part is arranged outside of the first and second center axes.

9. 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,
wherein the second piece and the fourth piece have extracting directions substantially opposed to each other, and
wherein, 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,
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,
wherein a filter is disposed in an opening part formed by extracting the first piece,
wherein an opening part formed by extracting the second piece is closed by a first lid member, and
wherein an opening part formed by extracting the fourth piece is closed by a second lid member.

10. A mold comprising:
a first piece;
a second piece;
a third piece; and
a fourth piece;
wherein the second piece has an elongated shape in its extracting direction,
wherein the second piece and the fourth piece have extracting directions substantially opposed to each other,
wherein the first piece and the third piece have extracting directions substantially opposed to each other, and
wherein the mold is configured to be suitable for a method for manufacturing a molded member having a hollow part by extracting the first piece, the second piece, the third piece, and the fourth piece of the mold in four different directions, such that:
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,
at the molding, the first piece and the third piece 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.

Assignees

• Canon Kk

Inventors

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

Classifications

• B41J2/1637 Primary

  molding · CPC title

• B29C45/33

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

• B41J2/162

  Manufacturing of the nozzle plates · CPC title

• B29C45/2628

  with mould parts forming holes in or through the moulded article, e.g. for bearing cages · CPC title

• B29C2045/0036

  Submerged or recessed burrs · CPC title