US 11,813,667 B2
Molding machine
Makoto Tsuji, Kanagawa (JP); Toshiaki Toyoshima, Kanagawa (JP); and Saburo Noda, Kanagawa (JP)
Assigned to SHIBAURA MACHINE CO., LTD., Tokyo-to (JP)
Filed by SHIBAURA MACHINE CO., LTD., Tokyo-to (JP)
Filed on Dec. 28, 2021, as Appl. No. 17/563,121.
Application 17/563,121 is a continuation of application No. PCT/JP2020/019087, filed on May 13, 2020.
Claims priority of application No. 2019-122281 (JP), filed on Jun. 28, 2019.
Prior Publication US 2022/0118510 A1, Apr. 21, 2022
Int. Cl. B22D 17/26 (2006.01); B22D 17/22 (2006.01)
CPC B22D 17/26 (2013.01) [B22D 17/22 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A molding machine comprising:
a base;
a fixed die plate fixed onto the base and holding a fixed die;
a movable die plate provided on the base to be movable in a mold opening and closing direction and holding a movable die to face the fixed die;
a toggle mechanism capable of clamping the fixed die and the movable die, the toggle mechanism including a plurality of links;
a link housing provided on the base to be movable in the mold opening and closing direction and allowing one end of a part of the plurality of links to be fixed thereto;
a first motor configured to drive the toggle mechanism;
a first screw shaft configured to drive the toggle mechanism, the first screw shaft configured to rotate by the first motor;
a crosshead configured to drive the toggle mechanism, the crosshead configured to move in the mold opening and closing direction by rotation of the first screw shaft, the plurality of links configured to move in accordance with movement of the crosshead;
a second motor configured to move the movable die plate and the link housing;
an extrusion plate arranged to allow an extrusion pin to appear and disappear in the movable die;
a guide bar fixed to any one of the link housing and the movable die plate, penetrating the extrusion plate, and slidably holding the extrusion plate;
a positioning member positioning the extrusion plate;
a tie bar fixable to the link housing and the fixed die plate and extending in the mold opening and closing direction; and
an injection device configured to fill a molten metal into a cavity formed by the fixed die and the movable die.