The double blank detecting device for a press machine uses a press machine with a die cushion device attached thereto, and automatically and repeatedly forms blank materials one by one. The double blank detecting device includes: a position signal acquiring unit that acquires a die cushion position signal indicating a position of a cushion pad of the die cushion device; a load signal acquiring unit that acquires a die cushion load signal indicating a die cushion load generated in the cushion pad of the die cushion device; and a double blank detecting unit that detects, as a double blank, a state where a plurality of the blank materials are overlapped, based on the die cushion position signal and the die cushion load signal that are acquired.

A waste treatment machine is disclosed, having a safety sensor which generates an alarm signal to stop the motor (7) when the requested torque exceeds a certain threshold, but has a gear with a friction transmission belt (8), i.e. not a toothed belt, between a driving pulley (9) and an idle pulley (10) connected to a shaft (6) for squeezing/grinding waste. The friction transmission belt is tightened so as to slip when a nominal maximum torque is exceeded. The protection sensor is configured to detect slippage of the friction transmission belt and to provide in such an event an alarm signal to a control unit that interrupts a normal miming of the motor. The organic waste treatment machine may be a single-worm screw (4) or double-worm screw squeezing machine, or a grinding machine with hammers (13) pivoted at the periphery of a shaft installed in the inner chamber of the machine. A method of controlling such a machine for treating waste is also disclosed.

A shaft decoupling system (200) includes an inner shaft (202) couplable to an actuator (102), an outer shaft (204) aligned coaxially with the inner shaft, and a bearing release collar (206). The bearing release collar is biased toward a first position by a biasing mechanism and configured to be moved to a second position against a biasing force of the biasing mechanism (222, 322) in response to the bearing release collar contacting a collar strike plate (118) as the actuator moves the shaft decoupling system. When the bearing release collar is in the first position, a bearing (220, 320) is held by the bearing release collar to prevent respective movement of the inner shaft and the outer shaft. When the bearing release collar is in the second position, the bearing release collar permits the bearing to retract such that the inner shaft is permitted to move coaxially with respect to the outer shaft.

A standalone waste compacting device includes an enclosure having a removable bin; a cover section on the enclosure incorporating at least one solar power unit, at least one storage battery and control unit, at least one inwardly pivoting user access flap having a dual locking control mechanism, at least one recessed foot pedal mechanism for opening the access flap, a detachable independent compaction unit comprising a scissor linkage and lever linkage system, and at least one service access means.

A spindle drive having a spindle, a spindle nut which is arranged on the spindle, a housing which surrounds the spindle nut, and an overload clutch which is arranged in the housing. The spindle nut and the housing are connected to one another via the overload clutch. The overload clutch is set up to disconnect the spindle nut from the housing in a torque-free manner if a defined overload torque which acts between the spindle nut and the housing is exceeded.

A control system includes a load detector, a determination unit, and a drive control unit. The load detector detects a load of a slide. The load of the slide includes a positive load due to a pressing force of the slide during pressing and a negative load at the time of a breakthrough. The determination unit determines whether to execute emergency stopping of the slide based on the positive load and the negative load detected by the load detector. The drive control unit controls the driving of the slide based on the determination result of the determination unit.

A press frame assembly includes a base plate, a load cell, and an overload protection element; a first plate, a plurality of guideposts disposed on the base plate; a plurality of springs disposed on the plurality of guideposts, a displacement transducer arranged to monitor a linear displacement of the first plate, and a controller, in communication with the load cell and the displacement transducer. The first plate is disposed to translate on the plurality of guideposts, and wherein the springs are disposed to urge movement of the first plate in relation to the base plate. The load cell is arranged to monitor a load exerted upon the base plate. The controller generates a signal that is based upon the load exerted upon the base plate or the linear displacement of the first plate in relation to the base plate.

A double-blank detecting apparatus for a press machine that is provided with a die cushion apparatus and is configured to form blanks one by one automatically and repeatedly. The double-blank detecting apparatus includes: a position signal acquiring unit configured to acquire a slide position signal indicating a position of a slide of the press machine; a load signal acquiring unit configured to acquire a die cushion load signal indicating a die cushion load generated on a cushion pad of the die cushion apparatus; and a double-blank detector configured to detect a state in which a plurality of blanks are stacked as a double blank based on the slide position signal acquired by the position signal acquiring unit and the die cushion load signal acquired by the load signal acquiring unit.

A press system includes: a detection unit configured to detect a press load applied for pressing a workpiece; a reference waveform generation unit configured to generate a reference waveform for comparison, based on a load waveform of the press load detected by the detection unit; and a determination unit configured to determine whether a press abnormality is present, based on the load waveform of the press load detected by the detection unit and the reference waveform. The press system generates the reference waveform, and therefore, the state of press working can be determined by a simple method.

A shaft decoupling system (200) includes an inner shaft (202) couplable to an actuator (102), an outer shaft (204) aligned coaxially with the inner shaft, and a bearing release collar (206). The bearing release collar is biased toward a first position by a biasing mechanism and configured to be moved to a second position against a biasing force of the biasing mechanism (222, 322) in response to the bearing release collar contacting a collar strike plate (118) as the actuator moves the shaft decoupling system. When the bearing release collar is in the first position, a bearing (220, 320) is held by the bearing release collar to prevent respective movement of the inner shaft and the outer shaft. When the bearing release collar is in the second position, the bearing release collar permits the bearing to retract such that the inner shaft is permitted to move coaxially with respect to the outer shaft.