Apparatus for treating magnetic wire and method for treating the same

Patent metadata

Field	Value
Publication number	US-10253392-B2
Application number	US-201715622369-A
Country	US
Kind code	B2
Filing date	Jun 14, 2017
Priority date	Jun 14, 2017
Publication date	Apr 9, 2019
Grant date	Apr 9, 2019

Abstract

Apparatus for heat treating magnetic wire includes a wire supply unit, a wire property measuring unit, a wire tensile force measuring unit, a heat treatment unit, and a wire winding unit. The wire supply unit includes a supply bobbin, a supply rotary part, a wire reel, and a tension roller. The wire property measuring unit includes a size measuring device, an after measurement capstan, and a wire reel and measures a size of the wire prior to the heat treatment. The wire tensile force measuring unit includes a tensile force measuring device, a tension roller, and a wire reel. The wire heat treatment unit includes a heat treatment furnace, a temperature measuring device, an after heat treatment capstan, and a wire reel. The wire winding unit includes a winding bobbin, a winding rotary part that rotates the winding bobbin, a tension roller, and a wire reel.

First claim

What is claimed is:

1. Apparatus for heat treating a magnetic wire, comprising:
a wire supply unit comprising a supply bobbin, around which the magnetic wire to be heat treated is wound, a supply rotary part that rotates the supply bobbin, a wire reel, and a tension roller;
a wire property measuring unit comprising a size measuring device, an after measurement capstan, and a wire reel and measuring a size of the wire prior to heat treatment;
a wire tensile force measuring unit comprising a tensile force measuring device, a tension roller, and a wire reel;
a wire heat treatment unit comprising a heat treatment furnace, a temperature measuring device, an after heat treatment capstan, and a wire reel;
a wire winding unit comprising a winding bobbin, around which the heat treated magnetic wire is wound, a winding rotary part that rotates the winding bobbin, a tension roller, and a wire reel; and
a control unit comprising a processor and a memory,
wherein the control unit is configured to receive signals indicative of the size of the magnetic wire measured by the size measuring device, a tensile force of the magnetic wire measured by the tensile force measuring device, a temperature of the heat treatment furnace measured by the temperature measuring device and to receive signals from the capstans, and configured to send control signals to the capstans and the tension rollers so that the tensile force applied to the magnetic wire between the supply bobbin and the winding bobbin is adjusted using the tension rollers, and a winding speed of the winding bobbin is adjusted using the after measurement capstan and the after heat treatment capstan, so that the temperature, a conveyance speed in the heat treatment furnace and a stress induced in the magnetic wire in the furnace are maintained in respective predetermined ranges.

2. The apparatus of claim 1 , further comprising another wire property measuring unit that is provided after the wire heat treatment unit and measures a size of the wire heat treated by the wire heat treatment unit.

3. The apparatus of claim 2 , wherein said another wire property measuring unit comprises a magnetism measuring device that measure magnetic properties of the wire heat treated by the wire heat treatment unit.

4. The apparatus of claim 1 , wherein the wire property measuring unit is configured to measure, when the magnetic wire includes an insulating layer covering the magnetic wire, both a diameter of the whole magnetic wire with the insulating layer and a diameter of the magnetic wire without the insulating layer.

5. The apparatus of claim 1 , wherein the winding speed of the winding bobbin is adjusted using the supply rotary part and the winding rotary part in addition to the after measurement capstan and the after heat treatment capstan.

6. The apparatus of claim 1 , wherein the apparatus is configured to measure the winding speed of the winding bobbin.

Assignees

• Aichi Steel Corp

Inventors

• Hamada Norihiko
• Shimode Akihiro

Classifications

• F27D19/00

  Arrangements of controlling devices · CPC title

• F27D2019/0003

  Monitoring the temperature or a characteristic of the charge and using it as a controlling value · CPC title

• C21D9/525

  for wire, for rods (C21D9/54 takes precedence) · CPC title

• F27D2003/0034

  Means for moving, conveying, transporting the charge in the furnace or in the charging facilities · CPC title

• C21D9/564

  Tension control · CPC title