US 12,275,177 B2
Base frame for injection molding machine
Kazuma Yamanaka, Yokosuka (JP); and Masaki Ogawa, Yokosuka (JP)
Assigned to SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed by SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed on Sep. 7, 2022, as Appl. No. 17/930,411.
Application 17/930,411 is a continuation of application No. PCT/JP2021/014065, filed on Mar. 31, 2021.
Claims priority of application No. 2020-064802 (JP), filed on Mar. 31, 2020; and application No. 2020-064804 (JP), filed on Mar. 31, 2020.
Prior Publication US 2023/0001615 A1, Jan. 5, 2023
Int. Cl. B29C 45/17 (2006.01); B29C 45/68 (2006.01)
CPC B29C 45/681 (2013.01) [B29C 2045/1792 (2013.01); B29C 2045/688 (2013.01)] 34 Claims
OG exemplary drawing
 
1. A base frame used in an injection molding machine provided with a mold clamping unit including a platen, on which at least the mold clamping unit is placed and which supports the mold clamping unit, the base frame comprising:
a pair of main beams spaced apart from each other in a width direction of the base frame and extending side by side in a longitudinal direction of the base frame; and
a platen attachment plate which is disposed on the main beams and to which the platen is attached,
wherein outer edge portions of the platen attachment plate in the longitudinal direction include welding points joined by welding to the main beams, and the platen attachment plate has a shape in which a length in the longitudinal direction is longer at an outer end than at an inside part in the width direction,
the platen includes a pair of leg portions spaced apart from each other in the width direction, and
the platen attachment plate includes a pair of platen fixing parts used for fixing to the pair of leg portions, respectively, the pair of platen fixing parts being located inside of an inside part in the longitudinal direction.