Method for manufacturing liquid-ejecting head

Patent metadata

Field	Value
Publication number	US-2016346969-A1
Application number	US-201615156559-A
Country	US
Kind code	A1
Filing date	May 17, 2016
Priority date	May 25, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

Provided is construction that in die slide injection molding, surely leaves each part in a mold on a specified side in the stage of opening a molding mold. In order to accomplish this, in an opening step, a push-out mechanism that applies a force on at least one of the individual parts is used to make the part surely belong to a desired mold.

First claim

What is claimed is:

1 . A method for manufacturing a liquid-ejecting head that comprises an ejection-element unit that ejects liquid, and a liquid-supply unit in which a liquid path is formed for guiding the liquid to the ejection element unit; wherein
a main mold, and a die slide mold that can slide inside the main mold and in which a mold for molding a first part of the liquid-supply unit and a mold for molding a second part of the liquid-supply unit are arranged in a direction of the slide are prepared; the method including: a first molding step for forming the first part and the second part by injecting resin into the mold for forming the first part and into the mold for forming the second part with the main mold in a closed state; an opening step for opening the main mold so that the first part that was formed by the first molding step belongs to the die slide mold, and the second part separates from the die slide mold; a sliding step for sliding the die slide mold and positioning and aligning the first part and the second part in the direction of the slide; and a second molding step for bringing the first part and second part into contact, and then closing the main mold and molding the liquid-supply unit by injecting resin for connecting the first part and second part together; wherein in the opening step, the first part belongs to the die slide mold and the second part is separated from the die slide mold by using a push-out mechanism that applies a force to at least one of the first part and the second part.

2 . The method for manufacturing a liquid-ejecting head according to claim 1 , wherein
in the first molding step, the second part is formed by the die slide mold and a mold piece that is arranged inside the main mold; and in the opening step, the second part belongs to the mold piece being separated from the die slide mold.

3 . The method for manufacturing a liquid-ejecting head according to claim 1 , wherein
in the first molding step, the second part is formed by the die slide mold and the main mold; and in the opening step, the second part belongs to the main mold being separated from the die slide mode.

4 . The method for manufacturing a liquid-ejecting head according to claim 1 , wherein
the push-out mechanism comprises a member that comes in contact with the first part or the second part, and a spring that presses the member.

5 . The method for manufacturing a liquid-ejecting head according to claim 1 , wherein
the push-out mechanism applies a force to the first part or the second part at plural locations.

6 . The method for manufacturing a liquid-ejecting head according to claim 1 , wherein
the push-out mechanism applies a force on the first part and the second part at locations that differ from an area where the first part and the second part come in contact in the second molding step.

7 . The method for manufacturing a liquid-ejecting head according to claim 1 , wherein
the liquid-ejecting head is an inkjet printing head that prints an image by ejecting a plurality of different kinds of inks, and in the liquid-supply unit, a liquid path for guiding ink from the supply opening to the ejection element unit is formed for each of the plurality kinds of inks.

Assignees

• Canon Kk

Inventors

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

Classifications

• B41J2/1752

  Mounting within the printer · CPC title

• B29C2045/0063

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

• B29C45/1615

  The materials being injected at different moulding stations · CPC title

• B29C45/0062 Primary

  Joined by injection moulding · CPC title

• B29C65/70 Primary

  by moulding (using a particular moulding technique, see the relevant technique {, e.g. by injection B29C45/14467}) · CPC title