公开(公告)号：US4923383A

公开(公告)日：1990-05-08

申请号：US289037

申请日：1988-12-23

申请人： Masanobu Kurumaji ,  Naoki Takeuchi ,  Tutomu Sano ,  Kazuyuki Kajiyama ,  Hiroaki Kondo ,  Etujiro Imanishi

发明人： Masanobu Kurumaji ,  Naoki Takeuchi ,  Tutomu Sano ,  Kazuyuki Kajiyama ,  Hiroaki Kondo ,  Etujiro Imanishi

IPC分类号： B29C43/58 ,  B30B15/24

CPC分类号： B30B15/245 ,  B29C43/58

摘要： A mold aligning method and device for a compression molding machine which includes a bed, a plurality of uprights standing upright on the bed, a crown block joined to the tops of the uprights, a slide block guided for vertical sliding movement by the uprights, and a hydraulic cylinder actuator mounted on the crown block to drive the slide block for vertical sliding movement, for maintaining an upper mold attached to the lower surface of the slide block in parallel to a mating lower mold during a compression-molding operation. The mold aligning device includes a plurality of mold position adjusting cylinder actuators disposed on the bed, a plurality of position detectors associated respectively with the mold position adjusting cylinder actuators to detect the strokes of the latter, a hydraulic source for driving the mold position adjusting cylinder actuators, and a control unit for controlling the strokes of the piston rods of the mold position adjusting cylinder actuators with reference to the zero points of the piston rods of the mold position adjusting cylinder actuators determined beforehand. The zero points are determined by placing the upper mold in close contact with the lower mold and extending the piston rods of the mold position adjusting cylinder actuators so that the piston rods are pressed against the lower surface of the slide block. The strokes of the piston rods are controlled during a compression-molding operation so that the upper mold is maintained precisely in parallel with the lower mold.

摘要翻译： 一种用于压缩成型机的模具对准方法和装置，其包括床，在床上竖立的多个立柱，连接到立柱顶部的冠块，由立柱引导以用于垂直滑动运动的滑块;以及 安装在所述冠块上的液压缸致动器以驱动所述滑块用于垂直滑动运动，用于在压缩成型操作期间将与附接到所述滑块的下表面平行的上模保持在配合的下模上。 模具对准装置包括设置在床上的多个模具位置调节气缸致动器，分别与模具位置调节气缸致动器相关联的多个位置检测器，用于检测后者的冲程，用于驱动模具位置调节缸的液压源 致动器，以及控制单元，用于参照预先确定的模具位置调节气缸致动器的活塞杆的零点来控制模具位置调节气缸致动器的活塞杆的冲程。 通过将上模与下模紧密接触并延伸模具位置调节气缸致动器的活塞杆来确定零点，使得活塞杆被压靠在滑块的下表面上。 在压缩模制操作期间控制活塞杆的冲程，使得上模具精确地保持与下模具平行。

公开(公告)号：US5147661A

公开(公告)日：1992-09-15

申请号：US648316

申请日：1991-01-29

申请人： Masanobu Kurumaji ,  Naoki Takeuchi ,  Tutomu Sano ,  Kazuyuki Kajiyama ,  Hiroaki Kondo ,  Etujiro Imanishi

发明人： Masanobu Kurumaji ,  Naoki Takeuchi ,  Tutomu Sano ,  Kazuyuki Kajiyama ,  Hiroaki Kondo ,  Etujiro Imanishi

IPC分类号： B29C43/58 ,  B30B15/24

CPC分类号： B30B15/245 ,  B29C43/58

摘要： A mold aligning method and device for a compression molding machine comprising a bed, uprights standing upright on the bed, a crown block joined to the tops of the uprights, a slide block guided for vertical sliding movement by the uprights, and a hydraulic cylinder actuator mounted on the crown block to drive the slide block for vertical sliding movement, for maintaining an upper mold attached to the lower surface of the slide block in parallel to a mating lower mold during a compression-molding operation. The mold aligning device comprises a plurality of mold position adjusting cylinder actuators disposed on the bed, position detectors associated respectively with the mold position adjusting cylinder actuators to detect the strokes of the latter, a hydraulic source for driving the mold position adjusting cylinder actuators, and a control unit for controlling the strokes of the piston rods of the mold position adjusting cylinder actuators with reference to the zero points of the piston rods of the mold position adjusting cylinder actuators determined beforehand. The zero points are decided by placing the upper mold in close contact with the lower mold and extending the piston rods of the mold position adjusting cylinder actuators so that the piston rods are pressed against the lower surface of the slide block. The strokes of the piston rods are controlled during a compression-molding operation so that the upper mold is maintained precisely in parallel to the lower mold.

公开(公告)号：US5071603A

公开(公告)日：1991-12-10

申请号：US283925

申请日：1988-12-13

申请人： Masanobu Kurumaji ,  Naoki Takeuchi ,  Tutomu Sano ,  Kazuyuki Kajiyama ,  Noriharu Nakagawa ,  Hiroaki Kondo ,  Etujiro Imanishi ,  Hiroshi Ueda ,  Yoshihiro Fukuda

发明人： Masanobu Kurumaji ,  Naoki Takeuchi ,  Tutomu Sano ,  Kazuyuki Kajiyama ,  Noriharu Nakagawa ,  Hiroaki Kondo ,  Etujiro Imanishi ,  Hiroshi Ueda ,  Yoshihiro Fukuda

IPC分类号： B30B15/20 ,  B30B15/22 ,  B30B15/26 ,  B29C45/80

CPC分类号： B30B15/26 ,  B29C43/58 ,  B30B15/20 ,  B30B15/22 ,  B29C2043/5808

摘要： A method of controlling a hydraulic press wherein changing over from velocity control to pressure control can be effected at an optimum point of time in accordance with a condition of material being filled. When a movable mold half of a metal mold is moved by a hydraulic cylinder to compression mold a work within a cavity defined in the metal mold, the velocity of movement of the mold half by the hydraulic cylinder is controlled until pressurization of the work is started, but after starting of the pressurization, the pressurizing force of the hydraulic cylinder is controlled. During the velocity control, a parameter which varies as the compression proceeds is successively detected during the velocity control, and changing over from the velocity control to the pressure control is effected at a point of time when the detected parameter coincides with a preset value--that is, when the work is fully filled in the cavity. A device for controlling a hydraulic press is also disclosed wherein optimal pressure control can be assured in accordance with a current condition of material for molding.