The present invention relates to a servo hydraulic press for sheet metal forming. The press comprises a hydraulic cylinder, at least two servo motors and at least two pumps for supplying pressurized fluid to the hydraulic cylinder, where each servo motor drives at least one pump. The servo motors are operable at variable speed, and the first servo motor and first pump are operable in an opposite direction to the second servo motor and the second pump. With this arrangement, the servo hydraulic press may be operated at low speed without causing damage to the pumps or motors.

A display device for punching and/or pressing machines. The display device can be constructed to be modular and of compact size so as to be positioned as desired on new and existing machine designs. The display device is formed with displays, which are configurable to provide a plurality of qualitative and quantitative information. The display device can be configured to be function with consoles of punching and pressing machines so as to be one or more of a supplemental device, an interfacing device, and an interactive device.

A press machine is provided. Two vertical hydraulic cylinders are arranged on an upper beam plate of a press machine body, and the two hydraulic cylinders correspond to workbenches at corresponding positions in a one-to-one correspondence, constituting left and right working units, and a common mechanical drive unit and a common hydraulic drive unit are set for the left and right working units. The mechanical driving unit is composed of a driving motor through an electromagnetic clutch, an electromagnetic brake and lead screw nut driving mechanism driven by a gear pair. According to the load profiles during the working process of hydraulic press machine, the mechanical driving unit or the hydraulic driving unit are selected to provide energy for the two working units. A control method for the press machine, a press machine execution system and a control method for the press machine execution system are further involved.

A projector emits laser light, and an optical receiver includes a photodetector. When an upper table is lowered, a safety controller controls lowering of the upper table to stop, when it is determined that the optical receiver is in a light obstructing state in a period in which a condition is satisfied that a first distance between a tip of a punch and an upper end of a material is equal to or greater than a second distance between the tip of the punch and the photodetector, and controls the lowering to continue without stopping the lowering of the upper table even when it is determined that the optical receiver is in the light obstructing state in a period in which a condition is satisfied that the first distance is less than the second distance.

A motor control device, includes a pressure command unit calculating a pressure command for commanding pressure generated in a pressure control object, a pressure detection unit detecting the pressure generated in the pressure control object, a pressure control unit calculating a speed command for pressure control for the servo motor, based on the calculated pressure command and the detected pressure, and a servo control unit controlling speed of the servo motor, based on the calculated speed command. The pressure control unit performs an integral operation. When a direction of increasing pressure in the integral operation is defined as a positive direction in the integral operation, and a direction of decreasing the pressure is defined as a negative direction, a median between an upper limit in the positive direction and a lower limit in the negative direction in the integral operation is larger than zero.

A projector emits laser light, and an optical receiver includes a photodetector. When an upper table is lowered, a safety controller controls lowering of the upper table to stop, when it is determined that the optical receiver is in a light obstructing state in a period in which a condition is satisfied that a first distance between a tip of a punch and an upper end of a material is equal to or greater than a second distance between the tip of the punch and the photodetector, and controls the lowering to continue without stopping the lowering of the upper table even when it is determined that the optical receiver is in the light obstructing state in a period in which a condition is satisfied that the first distance is less than the second distance.

A heat press dual-zone temperature control system includes a first plate including an internal heating element and a first temperature sensor and a second plate including an internal heating element and a second temperature sensor. The first plate is arranged adjacent and parallel with the second plate. A controller is configured to provide temperature control, including controlling a temperature of the first plate to a first setpoint based on information from the first temperature sensor, and independently controlling a temperature of the second plate to a second setpoint based on information from the second temperature sensor. A user interface is communicatively coupled with the controller. The user interface includes a first zone configured to receive user input for the first plate and to display information about the first plate, and a second zone configured to receive user input for the second plate and to display information about the second plate.

An apparatus includes a first roll and a second roll on each of which a pattern is formed, a first motor and a second motor to rotate the respective rolls, a shaft direction supporting mechanism to support the second roll along a shaft direction and an axial position adjusting mechanism configured to move the shaft direction supporting mechanism along the shaft direction. The posture of the rotating shaft of the second motor is maintained constant at all times, and the second roll is moved in the shaft direction along the first roll, thereby adjusting the positions of both patterns on the first roll and the second roll along the shaft direction.

The following disclosure relates to a system and method of actively managing electrolyzer stack compression. The method includes receiving: by a data acquisition unit, stack data from an electrolyzer stack in real time; providing, by the data acquisition unit, the stack data to a compression force controller; and controlling, by the compression force controller, how much force is applied by a force generating mechanism to the electrolyzer stack based on the stack data.

The invention relates to a method for making conveyor belts in an apparatus having a vulcanizing press. The method minimizes the press opening times and the throughput of the press is thus optimized. With the method, a check is made during the method whether a conveyor belt blank is present for vulcanizing in the press, and depending on the information from this check, the decision is made as to how far the press opens the press plates. Here, an operating open position and a full opening of the press are provided.