US 12,257,754 B2
Mold-clamping machine
Hozumi Yoda, Nagano (JP); Satoshi Hoshino, Nagano (JP); and Atsushi Murata, Nagano (JP)
Assigned to NISSEI PLASTIC INDUSTRIAL CO., LTD., (JP)
Appl. No. 17/423,225
Filed by NISSEI PLASTIC INDUSTRIAL CO., LTD., Nagano (JP)
PCT Filed Feb. 14, 2020, PCT No. PCT/JP2020/005682
§ 371(c)(1), (2) Date Jul. 15, 2021,
PCT Pub. No. WO2020/175166, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 2019-031757 (JP), filed on Feb. 25, 2019.
Prior Publication US 2022/0063164 A1, Mar. 3, 2022
Int. Cl. B29C 45/64 (2006.01); H01F 7/02 (2006.01)
CPC B29C 45/64 (2013.01) [H01F 7/02 (2013.01); B29C 2045/645 (2013.01); B29K 2905/00 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A mold-clamping machine comprising:
a stationary mount which is fastened to a base and which supports a stationary mold;
a movable mount which is mounted on the base so as to be movable and which supports movable mold;
a mold clamping mechanism which is placed outwardly relative to the movable mount, is mounted on the base so as to be movable, and clamps th movable mold with the stationary mold;
a lie bar that extends so as to pass completely through at least th movable mount;
a mold opening-and-closing mechanism that moves either one of the movable mount or the mold-clamping mechan ism along the tie bar relative to the stationary mount; and
a constraining mechanism that causes either one of the mold clamping mechanism or the stationary mount to be in a constrained state relative to the tie bar, the constraining mechanism comprising a cylindrical portion encircling a lengthwise section of the tie bar and extending completely through either one of the mold-clamping mechanism or the stationary mount, and a magnet mechanism disposed in a wall of the cylindrical portion and configured to megnetically cause either one of the mold-clamping mechanism or the stationary mount to be in the constrained state or in an enconstrained state relative to the tie bar.