摘要:
A forming gang press includes a plurality of punch and die units to form flat blanks which discharge laterally through discharge chutes with means to monitor the failure of a die unit to discharge a blank. Each chute has a photocell establishing a beam perpendicular to the movement of the blank to form a signal per blank discharge. A cycle means is operated in synchronism with the dies to establish operational signals for each cycle of operation of the punch and die units. The detection signals and operational signals are connected to a logic circuit to disable the press if a detection signal and/or an operational signal is not generated for each cycle. The logic circuit uses a set-reset memory to monitor each cycle and a sealed logic gate to monitor the sequence of the signals and provide a sealed output to alarm circuitry to indicate the jammed die unit and to stop the press. The die chutes are supported by a common bracket between a bottom cover and a channel-shaped top cover. The covers carry the photocell source and receivers for alignment with the respective chutes. The covers and bracket are stacked upon a mounting plate on the press with aligned openings mating with mounting pins on the mounting plate and clamped in place by releasable clamping pins passing through openings in the outer ends of the mounting pins.
摘要:
A press unloader having a reciprocating tray for receiving workpieces ejected from an upper die in a press. The tray is shifted to the work-receiving position at a rate controlled by the upward rate of the press ram and is rapidly retracted at a rate independent of the rate of the press ram so that the next workpiece may be conveniently loaded into the press.
摘要:
AN EJECTOR ASSMELBY FOR EJECTING BLANKS FROM THE DIE AREA OF A PRESS HAVING MULTIPLE DIES. THE DIES ARE ARRANGED DIAGONALLY ACROSS THE PRES BED, AND THE EJECTOR ASSEMBLY IS POSITIONED ON ONE SIDE OF THE PRESS SO THAT SOME OF THE DIES ARE REMOTE FROM THE ASSEMBLY. THE ASSEMBLY COMPRISES A KICKER ARM PIVOTABLY SUSPENDED FROM THE PRESS ABOVE THE DIE AREA, AN ELONGATED KICKER SLIDE, A STATIONARY SLIDE HOLDER MOUNTED ON THE PRESS ON WHICH THE KICKER SLIDE IS GUIDED INTO AN OUT OF THE AREA OF THE REMOTE DIES, AND LINKAGE MEANS CONNECTING THE KICKER ARM WITH THE KICKER SLIDE TO TRANSLATE ARCUATE MOTION OF THE ARM INTO LINEAR MOTION OF THE SLIDE. A CAM MEANS ON THE PRESS RAM ACTUATES THE KICKER ARM IN TIMED RELATIONSHIP THEREWITH WHEREBY THE SLIDE EJECTS BLANKS FROM THE DIE AREA.
摘要:
THE DISCLOSURE IS OF AN IMPROVED MECHANISM FOR EJECTING A WORKPIECE FROM A MATRIX AFTER FORMING THEREIN AND INCLUDES A ROCKER SHAFT CARRYING AN ADJUSTABLE CAM PIVOTED THEREON ON AN AXIS PARALLEL TO THE AXIS OF THE ROCKER SHAFT, A LEVER HAVING AN EJECTING ARM AND A FOLLOWER ARM, THE LATTER ENGAGING THE CAM ON THE ROCKER SHAFT.