US 11,883,991 B2
Control device of injection molding machine and method of setting mold clamping force
Akio Okamoto, Ube (JP); Yuuichirou Arima, Ube (JP); Kazuaki Miyamoto, Ube (JP); Yuuichirou Fukuda, Ube (JP); and Fumihiko Shimizu, Ube (JP)
Assigned to UBE MACHINERY CORPORATION, LTD., Ube (JP)
Appl. No. 17/624,756
Filed by UBE MACHINERY CORPORATION, LTD., Ube (JP)
PCT Filed May 8, 2020, PCT No. PCT/JP2020/018614
§ 371(c)(1), (2) Date Jan. 4, 2022,
PCT Pub. No. WO2021/014715, PCT Pub. Date Jan. 28, 2021.
Claims priority of application No. 2019-136571 (JP), filed on Jul. 25, 2019.
Prior Publication US 2022/0250299 A1, Aug. 11, 2022
Int. Cl. B29C 45/76 (2006.01); B29C 45/17 (2006.01); B29C 45/80 (2006.01); G05B 19/402 (2006.01)
CPC B29C 45/7653 (2013.01) [B29C 45/1774 (2013.01); B29C 45/80 (2013.01); G05B 19/402 (2013.01); B29C 2945/76083 (2013.01); B29C 2945/76187 (2013.01); B29C 2945/76505 (2013.01); B29C 2945/76705 (2013.01); G05B 2219/45244 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A control device of an injection molding machine, the injection molding machine comprising: a mold clamping device that advances and retracts a movable mold with respect to a fixed mold; and an injection device that injects and fills a molten material into a cavity formed between both of the molds, the control device comprising:
a display unit that displays a setting screen for setting molding conditions of the injection molding machine; and
a setting unit that sets the molding conditions based on information displayed on the setting screen,
the setting screen having: a first display column that displays a plurality of screw positions from a measurement completion position of a screw of the injection device to a pressure-keeping switching position of the screw of the injection device; and a second display column that displays mold clamping forces generated by the mold clamping device in such a manner that the mold clamping forces are associated with the plurality of screw positions displayed in the first display column,
the control device being configured to execute the following processing of (a) to (d):
(a) a first setting processing in which the plurality of screw positions from the measurement completion position of the screw to the pressure-keeping switching position of the screw are displayed in the first display column to be set;
(b) a second setting processing in which setting is performed in such a manner that a screw position that has been selected, in order from a measurement completion position side, from the plurality of screw positions that have been set, is associated with the mold clamping force displayed in the second display column;
(c) an injection processing in which mold clamping is performed with the mold clamping force that has been set, and the screw is advanced to the selected screw position from the measurement completion position to have the molten material filled into the cavity; and
(d) a judgment receiving processing in which a molded article that has been extracted from the cavity after the injection processing receives a judgment result of presence/absence of a defect, and
the mold clamping force in the molding conditions being set by repeating, for each of the plurality of screw positions, the following steps:
when the defect has been found to be present in the molded article in the judgment receiving processing of above-described (d), the set mold clamping force associated with the screw position where the defect has been confirmed is displayed and increased in the second setting processing of above-described (b), and
the injection processing of above-described (c) and the judgment receiving processing of above-described (d) are re-performed for the screw position where the defect has been confirmed.