Resin curing device and resin curing method

Patent metadata

Field	Value
Publication number	US-11975356-B2
Application number	US-202117196961-A
Country	US
Kind code	B2
Filing date	Mar 9, 2021
Priority date	Mar 18, 2020
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

Provided is a resin curing device capable of improving work efficiency when curing a liquid resin. A controller (2) of a resin curing device (1) controls opening degrees of three valves (51 to 53) so that a gas flow passage becomes a circulation passage (40) when an execution condition of an operation of feeding air to a curing furnace (10) is satisfied, and controls the opening degrees of the three valves (51 to 53) so that the gas flow passage becomes a bypass passage (41) when the execution condition is not satisfied (STEPS 30 to 41).

First claim

What is claimed is:

1. A resin curing device for curing a liquid resin attached to an object in a predetermined curing temperature atmosphere, the resin curing device comprising:
a heater for heating gas;
a curing furnace that allows the object to be taken in and out of the furnace via an opening;
a blower for blowing the gas;
a circulation passage extending among the blower, the heater, and the curing furnace so as to allow the gas to circulate among the blower, the heater, and the curing furnace;
a bypass passage connected to the circulation passage so as to bypass the curing furnace;
a plurality of valves capable of switching the gas flow passage between the circulation passage and the bypass passage; and
a flow passage controller that is configured to control the plurality of valves so that the gas flow passage becomes the circulation passage when an execution condition of an operation of feeding the gas to the curing furnace is satisfied, and to control the plurality of valves so that the gas flow passage becomes the bypass passage when the execution condition is not satisfied,
wherein each of the valves is independently controlled by the flow passage controller.

2. The resin curing device according to claim 1 , further comprising:
a first temperature sensor for detecting a first temperature being the temperature inside the curing furnace;
a second temperature sensor for detecting a second temperature being the temperature inside the circulation passage on the downstream side of the heater and between the heater and the bypass passage; and
a heater controller configured to control the heater based on the first temperature when the gas flow passage is the circulation passage, and to control the heater based on the second temperature when the gas flow passage is the bypass passage.

3. The resin curing device according to claim 2 ,
wherein when the gas flow passage is the circulation passage, the heater controller controls the heater based on the second temperature when the second temperature is lower than a predetermined temperature, and controls the heater based on the first temperature after a predetermined condition including that the second temperature has reached the predetermined temperature is satisfied.

4. The resin curing device according to claim 1 ,
wherein the resin curing device further comprises a shutter for opening/closing the opening of the curing furnace, and
the flow passage controller comprises:
an object determination unit for determining whether the object is accommodated in the curing furnace or not; and
an execution condition determination unit that determines that the execution condition is satisfied when the following condition is satisfied: the object determination unit determines that the object is accommodated in the curing furnace, and the opening of the curing furnace is closed by the shutter.

5. The resin curing device according to claim 2 ,
wherein the resin curing device further comprises a shutter for opening/closing the opening of the curing furnace, and
the flow passage controller comprises:
an object determination unit for determining whether the object is accommodated in the curing furnace or not; and
an execution condition determination unit that determines that the execution condition is satisfied when the following condition is satisfied: the object determination unit determines that the object is accommodated in the curing furnace, and the opening of the curing furnace is closed by the shutter.

Assignees

• Honda Motor Co Ltd

Inventors

• Yamamoto Naoki
• Takahashi Nobuhisa

Classifications

• B05D3/0413 Primary

  Heating with air · CPC title

• B05C9/14

  the auxiliary operation involving heating {or cooling} · CPC title

• F27B17/0083 Primary

  with means for circulating the atmosphere · CPC title

• F27D7/02

  Supplying steam, vapour, gases or liquids · CPC title

• F27D7/04

  Circulating atmospheres by mechanical means · CPC title