Method and apparatus for manufacturing laminated iron core

Patent metadata

Field	Value
Publication number	US-2018166214-A1
Application number	US-201715834732-A
Country	US
Kind code	A1
Filing date	Dec 7, 2017
Priority date	Dec 13, 2016
Publication date	Jun 14, 2018
Grant date	—

Abstract

A method for manufacturing a laminated iron core includes preheating a laminated body in which a plurality of iron core pieces are laminated and which includes a resin filling hole, measuring a temperature of the laminated body after preheating the laminated body, determining whether or not the temperature measured is within a predetermined range, feeding the laminated body into a molding device in a case where it is determined that the temperature is within the predetermined range, and filling the resin filling hole of the laminated body with a resin material in the molding device.

First claim

What is claimed is:

1 . A method for manufacturing a laminated iron core, the method comprising:
preheating a laminated body in which a plurality of iron core pieces are laminated and which includes a resin filling hole; measuring a temperature of the laminated body after preheating the laminated body; determining whether or not the temperature measured is within a predetermined range; feeding the laminated body into a molding device in a case where it is determined that the temperature is within the predetermined range; and filling the resin filling hole of the laminated body with a resin material in the molding device.

2 . The manufacturing method according to claim 1 , wherein the temperature of the laminated body is measured while conveying the laminated body toward the molding device.

3 . The manufacturing method according to claim 1 , wherein the laminated body is measured in temperature at a plurality of spots, and
it is determined whether or not a difference between the temperatures measured at the plurality of spots is smaller than a predetermined value, and the laminated body is fed into the molding device in a case where it is determined that the difference between the temperatures measured at the plurality of spots is smaller than the predetermined value.

4 . The manufacturing method according to claim 1 , further comprising excluding the laminated body from a conveyance path to a molding device in a case where it is not determined that the temperature is within the predetermined range.

5 . An apparatus for manufacturing a laminated iron core, the apparatus comprising:
a preheating device which preheats a laminated body in which a plurality of iron core pieces are laminated and which includes a resin filling hole; a temperature sensor which measures a temperature of the laminated body; a molding device which fills the resin filling hole of the laminated body with a resin material; a conveying device which conveys the laminated body ejected from the preheating device to the molding device; and a controller which performs: controlling the preheating device to preheat the laminated body; controlling the temperature sensor to measure the temperature of the laminated body after preheating the laminated body; determining whether or not the temperature measured is within a predetermined range; controlling the conveying device to convey the laminated body to the molding device when it is determined that the temperature is within the predetermined range; and controlling the molding device to fill the resin filling hole with the resin material.

6 . The manufacturing apparatus according to claim 5 , wherein the controller controls the temperature sensor and the conveying device to measure the temperature of the laminated body while conveying the laminated body toward the molding device.

7 . The manufacturing apparatus according to claim 5 , wherein the controller determines whether or not a difference between temperatures measured at a plurality of spots with the temperature sensor is smaller than a predetermined value, and
the controller controls the conveying device to convey the laminated body into the molding device in a case where it is determined that the difference between the temperatures measured at the plurality of spots is smaller than the predetermined value.

8 . The manufacturing apparatus according to claim 5 , wherein the controller controls the conveying device to exclude the laminated body from a conveyance path to the molding device in a case where it is not determined that the temperature is within the predetermined range.

Assignees

• Mitsui High Tec

Inventors

• Amano Katsumi
• Fukunaga Yukiya
• Fukumoto Takashi

Classifications

• B29K2705/12

  Iron · CPC title

• B29C70/845

  by moulding material on a relative small portion of the preformed parts · CPC title

• H01F41/0233 Primary

  Manufacturing of magnetic circuits made from sheets (magnetic cores made from sheets H01F27/245; soft magnetic alloys in the form of sheets H01F1/16) · CPC title

• B29C70/88

  characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced · CPC title

• B29C70/745

  Filling cavities in the preformed part (for joining B29C70/84) · CPC title