Patent ID: 8308467
Filing Date: 2012-11-13
Classification: B29C

Abstract:
1. A parallelism control apparatus of a movable platen of an electric injection molding machine, wherein, bottom surfaces of base plates which are disposed under bottom surfaces of both sides of the movable platen to support the movable platen are placed on support plates, and the movable platen performs an opening and closing operation as the support plates are slidably moved along guide rails, the parallelism control apparatus includes: a first wedge which includes a first inclined portion that is fitted while being inserted between the base plate and the support plate, and a first side surface portion provided on one side of the first inclined portion; a first spiral bar which is fastened to the base plate while penetrating the first side surface portion so that the first wedge is disposed to place a first inclined surface of the first inclined portion on any one of inclined surfaces of the base plate and the support plate; position control fastening pieces which are fastened to the first spiral bar on both sides of the first side surface portion; a fixed block which is disposed on the support plate and fixed to the support plate while facing the base plate; a second wedge which includes a second inclined portion that is fitted while being vertically disposed and inserted between the fixed block and the base plate, and a second side surface portion provided on one side of the second inclined portion; a second spiral bar which is fastened to the fixed block while penetrating the second side surface portion so that the second wedge is disposed to place a second inclined surface of the second inclined portion on an inclined surface of the fixed block; and position control fastening pieces which are fastened to the second spiral bar on both sides of the second side surface portion, wherein the support plate is provided with a passage into which the second wedge enters during a downward movement.