Title:
PRESSURE DETECTION DEVICE AND QUALITY DETERMINATION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/065158
Kind Code:
A1
Abstract:
Provided are a pressure detection device (100) and method for detecting the internal pressure of a cavity (CT) of a mold (50) of an injection molding device (1), and determining the quality of a product molded by the mold (50). The pressure detection device (100) is equipped with: a plurality of pressure sensors (S1-Sn) for detecting the internal pressure in each of a plurality of cavities (CT) of the mold (50) of the injection molding device (1); and an information processing device (90) for receiving the detected internal pressures and determining the quality of a product molded by each cavity (CT) on the basis of a value pertaining to the variation in internal pressure peak values. In addition, the method of the present invention determines the quality of a product by receiving the internal pressures of the plurality of cavities (CT) of the mold (50) of the injection molding device (1) which were detected by the plurality of pressure sensors (S1-Sn), calculating a value pertaining to the variation in internal pressure peak values, and comparing said value pertaining to variation with a prescribed threshold.
Inventors:
TAKAYAMA YOSHIMASA (JP)
KOBAYASHI KOTA (JP)
KOBAYASHI KOTA (JP)
Application Number:
PCT/JP2020/028003
Publication Date:
April 08, 2021
Filing Date:
July 20, 2020
Export Citation:
Assignee:
MINEBEA MITSUMI INC (JP)
International Classes:
B29C45/17; B29C45/26; B29C45/76
Domestic Patent References:
| WO2018105227A1 | 2018-06-14 |
Foreign References:
| JP2009286052A | 2009-12-10 | |||
| JP2018183994A | 2018-11-22 | |||
| JP2015231676A | 2015-12-24 | |||
| CN109501185A | 2019-03-22 | |||
| JP2020108947A | 2020-07-16 | |||
| JP2009286052A | 2009-12-10 |
Attorney, Agent or Firm:
EINSEL Felix-Reinhard et al. (JP)
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