-
公开(公告)号：US3550425A
公开(公告)日：1970-12-29
申请号：US3550425D
申请日：1968-07-24
Applicant: PROMECAN SISSON LEHMANN
Inventor： CAILLOUX PAUL
CPC classification number: B23D15/14 , B21D5/0272 , B30B15/245 , B30B15/281
-
公开(公告)号：US2759330A
公开(公告)日：1956-08-21
申请号：US33267553
申请日：1953-01-22
Applicant: ANTON JOSEPH VAN BROEKHOVEN
CPC classification number: F15B11/22 , B30B15/245
-
公开(公告)号：US2286798A
公开(公告)日：1942-06-16
申请号：US33559640
申请日：1940-05-16
Applicant: HYDRAULIC DEV CORP INC
Inventor： FLOWERS PAUL E
IPC: B30B15/24
CPC classification number: B30B15/245
-
24.发明申请公开(公告)号：US20180264765A1
公开(公告)日：2018-09-20
申请号：US15542598
申请日：2015-12-15
Applicant: PERSICO S.p.A.
Inventor： Paolo AMBROSINI
CPC classification number: B30B15/245 , B29C43/02 , B29C43/58 , B29C70/46 , B29C2043/3283 , B29C2043/5833 , B29K2105/255 , B30B1/323 , B30B15/007
Abstract: A press (1) is described, for molding an ingot made of thermoplastic or thermosetting material, comprising a basement (10) integral with risers (20), a first and a second plane (30, 40) relatively sliding with respect to the risers (20), by means of first and second hydraulic cylinders (50, 60), respectively adapted to allow opening and closing a mold formed of a first half-mold fastened to the first plane (30) and a second half-mold fastened to the second plane (40), comprising actuators (70) adapted to exert a force whose direction is equal to or opposite with respect to the direction of the force adapted to allow opening or closing the mold; the first plane (30) connected to the basement (10) is moved by means of the first hydraulic cylinders (50) and of the actuators (70), while the second plane (40) is blocked by means of a blocking apparatus (80).
-
公开(公告)号：US20160059296A1
公开(公告)日：2016-03-03
申请号：US14835941
申请日：2015-08-26
Applicant: BENTELER AUTOMOBILTECHNIK GMBH
Inventor： Georg FROST , Oliver LUETKEMEYER , Josef KOESTER
CPC classification number: B21D37/04 , B21D24/02 , B30B15/007 , B30B15/026 , B30B15/06 , B30B15/061 , B30B15/064 , B30B15/067 , B30B15/068 , B30B15/245 , C21D1/673
Abstract: The present invention relates to a press-forming tool having a top die and a bottom die, which can be moved toward one another, forming a forming cavity between the top die and the bottom die when the press-forming tool is closed, wherein a die clamping plate is arranged on a press ram and/or on a press table, wherein a top die or bottom die, which can be moved relative to the die clamping plate, is supported on said plate while incorporating at least one resilient adjusting element.
Abstract translation: 本发明涉及一种具有顶模和底模的冲压成型工具，其可相对于彼此移动，当压制成型工具关闭时，在顶模和底模之间形成成形腔，其中， 模具夹板布置在压力机压头和/或压床上，其中可以相对于模具夹紧板移动的顶模或底模被支撑在所述板上，同时结合至少一个弹性调节元件。
-
Patent Agency Ranking
公开(公告)号：US07503200B2
公开(公告)日：2009-03-17
申请号：US10546909
申请日：2004-02-19
Applicant: Gerrit Gerritsen , Piero Papi
Inventor： Gerrit Gerritsen , Piero Papi
CPC classification number: B30B15/007 , B21D5/0272 , B30B15/245 , Y10S72/702
Abstract: Method of correcting a bending operation performed by a press brake, the bottom beam of which contains deformation compensation cylinders, in which a calibration nomogram is pre-recorded using very short calibration pieces, this nomogram establishing a correspondence between the forces measured at the side frames and the pressures applicable to the compensation cylinders in order to keep the bottom beam substantially straight. During a subsequent bending operation, pressure values resulting from this nomogram are applied to the compensation cylinders according to the forces measured at the side frames. A bottom dead center is recalculated by taking account of the deformation of the top beam, the deformation of the side frames, the actual length and thickness of the piece, and the spring effect.
Abstract translation: 校正由底部梁包含变形补偿缸的压制机执行的弯曲操作的方法，其中使用非常短的校准件预先记录校准列线图，该线图确定在侧框架处测量的力之间的对应关系 以及适用于补偿缸的压力，以便保持底梁基本上直线。 在随后的弯曲操作期间，根据在侧框架处测量的力将由该列线图产生的压力值施加到补偿缸。 通过考虑顶梁的变形，侧框的变形，件的实际长度和厚度以及弹簧的作用来重新计算下死点。
-
公开(公告)号：US5147661A
公开(公告)日：1992-09-15
申请号：US648316
申请日：1991-01-29
Applicant: Masanobu Kurumaji , Naoki Takeuchi , Tutomu Sano , Kazuyuki Kajiyama , Hiroaki Kondo , Etujiro Imanishi
Inventor： Masanobu Kurumaji , Naoki Takeuchi , Tutomu Sano , Kazuyuki Kajiyama , Hiroaki Kondo , Etujiro Imanishi
CPC classification number: B30B15/245 , B29C43/58
Abstract: 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：US4890475A
公开(公告)日：1990-01-02
申请号：US236462
申请日：1988-08-25
Applicant: Horst Baltschun
Inventor： Horst Baltschun
CPC classification number: B30B1/32 , B21D28/20 , B30B15/24 , B30B15/245
Abstract: A prestressed hydraulic press includes a pressure generator for selectively prestressing the hydraulic press such that the press is under substantially constant stress during all phase operations of the hydraulic press.
Abstract translation: 预应力液压机包括用于选择性地预压液压机的压力发生器，使得压机在液压机的所有相位操作期间处于基本上恒定的应力。
-
公开(公告)号：US4828474A
公开(公告)日：1989-05-09
申请号：US100489
申请日：1987-09-24
Applicant: Ronald Ballantyne
Inventor： Ronald Ballantyne
CPC classification number: B30B15/245 , B29C2043/5833 , B29C2043/5858
Abstract: A press has upper and lower platens which can be moved towards and away from one another. Four hydraulic leveling cylinders are mounted in a vertical orientation on the lower platen for purposes of platen parallelism control. In preferred form, each cylinder has a piston rod which engages an associated post on the upper platen as the platens approach one another. The piston rod and associated piston are formed with a longitudinal bore open at the upper piston rod end, and a rigid shaft is mounted in the bore with a lower end extending through the bottom of the cylinder housing. A coil spring in the interior of the piston rod urges the rigid shaft upwardly until a collar formed on the shaft engages a stop surface, the upper shaft end then being flush with the upper piston rod end. The associated post is fixed to the upper press platen in-line with the piston rod and has an internal passage in which is located a stud-like shaft that engages the rigid shaft mounted in the piston rod. Changes in the spacing between platens, including changes attributable to axial contraction and expansion of the post and piston rod with varying applied loads, are consequently manifested as axial displacement of the lower end of the rigid shaft relative to the lower platen. A sensor detects this relative displacement, producing a signal indicating platen spacing at the leveling cylinder. Sensor signals from the four cylinders are used to control the cylinders so as to maintain platen parallelism.
-
公开(公告)号：US3768400A
公开(公告)日：1973-10-30
申请号：US3768400D
申请日：1972-01-19
Applicant: HAEMMERLE AG MASCHF
IPC: B30B15/24
CPC classification number: B30B15/245 , B30B15/163
Abstract: A press wherein there is provided an arrangement of opposing cylinder-piston motors to prevent skewing of the press ram or plasten when it is moved in its work stroke by cylinder-piston work motors. The opposing motors comprise a single acting motor and a double acting motor, each connected to an end of the ram in opposing relation to the work motors. The single acting cylinder is serially connected to the rod end of the double acting motor. The opposing motors are connected to a pressure accumulator which provides the opposing counter-pressure to overcome skewing movements of the ram and also provides pressure fluid to the opposing motors to retract the ram. In another embodiment, the ram is provided with an extension which is perpendicular thereto. Pressurized cylinder-piston motors are arranged on opposing sides of the extension to maintain it in a position wherein the ram is parallel to the base bed of the press. Valve means are provided to control the rate of fluid flow to the work motors connected to the ram. The valve means are actuated by means located near the extension whereby skewing of the ram moves the extension to actuate the valves to control the rate of flow to the work motors in the sense to eliminate the skewing movement and to resolve the ram to its parallel position.
Abstract translation: 一种压力机，其中提供了相对的气缸 - 活塞马达的布置，以防止当压力缸或活塞马达在其工作行程中通过气缸 - 活塞工作马达移动时，压头压头或塑胶体的偏斜。 相对的电动机包括单作用电动机和双作用电动机，每个电动机连接到与作业电动机相对的压头的端部。 单作用气缸串联连接到双作用电动机的杆端。 相对的电动机连接到压力蓄能器，其提供相对的反压力以克服冲头的倾斜运动，并且还向相对的电动机提供压力流体以使压头缩回。
-
-
-
-
-
-
-
-
-
Search Results
32
records
(took 0.111 seconds)
