US 11,813,783 B2
Injection molding system and method for manufacturing molded object
Kakeru Sasagawa, Nagano (JP); Kei Yokota, Nagano (JP); Kenta Anegawa, Nagano (JP); Seiichiro Yamashita, Nagano (JP); Yuji Shinbaru, Nagano (JP); Kazunobu Maruyama, Nagano (JP); Daichi Miyashita, Nagano (JP); Hiroki Takano, Nagano (JP); and Riona Hayashi, Nagano (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Sep. 17, 2020, as Appl. No. 17/023,482.
Claims priority of application No. 2019-169954 (JP), filed on Sep. 19, 2019.
Prior Publication US 2021/0086426 A1, Mar. 25, 2021
Int. Cl. B29C 45/76 (2006.01); B29C 45/42 (2006.01); B29C 45/17 (2006.01); B29C 45/74 (2006.01); B29C 45/60 (2006.01); B29C 45/62 (2006.01); B29C 45/47 (2006.01)
CPC B29C 45/7626 (2013.01) [B29C 45/1769 (2013.01); B29C 45/42 (2013.01); B29C 45/47 (2013.01); B29C 45/60 (2013.01); B29C 45/62 (2013.01); B29C 45/74 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An injection molding system comprising:
an injection molding machine configured to inject a molten material into a mold to mold a molded object;
an inspection device including a first placement unit and a second placement unit, an inspection unit configured to inspect the molded object individually placed on one of the first placement unit and the second placement unit, and a moving unit configured to switch between inspection at the first placement unit and inspection at the second placement unit by moving the inspection unit between a first inspection position and a second inspection position, and by reciprocating the first placement unit along a first direction between a first delivery position and the first inspection position to change a relative position between the first placement unit and the inspection unit and reciprocating the second placement unit along the first direction between a second delivery position and the second inspection position to change a relative position between the second placement unit and the inspection unit, the first inspection position and the second inspection position being aligned along a second direction orthogonal to the first direction;
a third placement unit on which the molded object after inspection by the inspection device is placed on a tray;
a robot configured to execute an operation of individually conveying the molded object molded by the injection molding machine from a taking-out position to the first placement unit or the second placement unit by switching between conveying to the first placement unit and conveying to the second placement unit, and an operation of individually conveying the molded object from the first placement unit or the second placement unit to the third placement unit by switching between conveying from the first placement unit and conveying from the second placement unit; and
a control device configured to control the injection molding machine, the robot, and the inspection device, wherein
the control device controls the injection molding machine, the robot, and the inspection device so as to
mold, by the injection molding machine, a first molded object as the molded object during a first molding period,
inspect, by the inspection unit, the first molded object individually placed on the first placement unit during a first inspection period,
individually convey, by the robot, the first molded object after inspection from the first placement unit to the third placement unit during a first conveyance period,
mold, by the injection molding machine, a second molded object as the molded object during a second molding period after the first molding period,
inspect, by the inspection unit, the second molded object individually placed on the second placement unit during a second inspection period,
individually convey, by the robot, the second molded object after inspection from the second placement unit to the third placement unit during a second conveyance period, and
overlap the first inspection period and the second molding period and overlap the second inspection period and the first conveyance period, and
a center of the taking-out position, a center of the third placement unit, a center of the first delivery position and a center of the second delivery position are arranged in this order with respect to the second direction.