Abstract: A plurality of detecting means 37, 38, 39, 40 are installed to detect a plurality of type specifying factors of work sheets W. A work sheet type identifying means 41 is installed to identify the types of the work sheets based on the factors detected by the detecting means 37˜40. A parameter selection means 42 is installed to select control parameters in accordance with the work sheet type identified by the work sheet type identifying means 41. A process control means 32 controls a processing means 3 based on the control parameters thus selected. The parameter selection means 42 is composed of a parameter memory means 44 and a parameter selection section 43. Said control parameters include a speed pattern of the ram, a hover height of the ram, a press torque in form-processing, and a number of tons for punching.

Abstract: An electric motor and hydraulic pump/motor are combined on a torque level, a press machine is controlled with controllability of an electric motor, and kinetic energy of a slide is regenerated during braking without constraints of slide pressurization or an amount of energy. A screw press drives a slide through a screw mechanism made up of a drive nut and a driven screw. The drive nut is provided with a ring gear integral therewith and this ring gear is engaged with a gear provided for a drive axis of an electric motor and a gear provided for the drive axis of a hydraulic pump/motor. The hydraulic pump/motor is connected to a constant high pressure source that generates a quasi-constant pressure hydraulic liquid and a low pressure source. This allows the electric motor and hydraulic pump/motor to be combined on a torque level.

Abstract: An apparatus for sterilizing and destroying hypodermic syringes and needles includes a waste compression cylinder having a cylinder side wall and a closed cylinder abutment end wall, and having a cylinder waste receiving port in the cylinder side wall and a waste releasing port in the cylinder side wall; a waste compression piston slidably retained within the waste compression cylinder; a piston drive mechanism drivably connected to the waste compression piston for driving the piston away from the abutment end wall to open space for receiving waste within the compression cylinder and for driving the piston toward and into close proximity with the cylinder abutment end wall to crush needles; a sterilizing air blowing mechanism oriented to blow sterilizing air into the compression cylinder; and an air heating mechanism for heating the sterilizing air to a sterilizing temperature.

Abstract: A system and method for compressing scrap metal. The scrap metal is compressed in a portable container. The container rests on two scales that rest above the ground surface. The fullness of the container is primarily evaluated based on the weight of the container. The scrap metal is initially delivered to a static compactor to which the container is mated. The compactor includes a ram that forces the scrap metal into and compresses the scrap metal in the container. The weight of the container is continually monitored while the container is mated to the compactor. The actuation of the ram is controlled so that, as the amount of scrap metal in the container increases, the frequency with which the ram is actuated increases. After the volume of scrap metal in the container increases above a certain level, each actuation of the ram actual comprises running the ram through plural extension and retraction cycles.

Abstract: A method of laser-assisted pressing is used to adjust the pressing position with a laser projector and an impressible element while pressing an opaque object. The apparatus in this invention is characterized by a platform, a pressing unit with at least one press head, and at least one laser projector for projecting a laser beam to form a light area. The press head presses the impressible element to form a pressure mark indicating the pressing position. The light area is then adjusted to match the pressure mark. Finally, the relative positioning of the platform and the pressing unit is adjusted to match the light area with the area to be pressed. Thus the pressing position will be accurate in the pressing process.

Abstract: The present invention provides an operation apparatus for a press, of simple structure with lower cost.

Abstract: A truss fabrication machine has processing circuitry for partially automating the fabrication of trusses. One or more workers place in jig stops on the tabletop a set of loose pre-cut truss members and the connector plates that get seated at the joints therebetween. The machine has a pressing head for seating the connector plates, which rides on a gantry above the tabletop in generally a Y-axis, wherein the gantry rides on a track generally along an X-axis. There are drivers to drive the gantry along the track and the pressing head along the gantry, as well an actuator for the pressing head. The processing circuitry is reliant on X- and Y-axis sensors for reckoning position on the tabletop. The processing circuitry is given control over the gantry, the pressing-head driver and actuator for coordinating movement of the gantry and pressing head between one given X and Y position to succeeding X and Y positions, and then actuating or not the actuating means.

Abstract: A method for detecting contamination on or damage to a web-contacting face in a paper machine or a paper finishing machine, including the steps of detecting vibrations of the web-contacting face over a period of time by means of a plurality of detectors arranged in association with the machine and determining the location of the contamination on or damage to the web-contacting face based on the time the vibrations were detected.

Abstract: The present invention relates to a servo press controller which can prevent the servo runaway caused by the malfunction of CPUs, the faults of a position sensor, or other troubles to thereby increase the safety of the servo press. For this purpose, first to third CPUs (21, 22, 23) each of which conducts a different control among the input of set data, the calculation of a servo position command, and the calculation of a servo speed command send and receive watch dog signals between itself and another CPU for monitoring each other's condition by checking whether the watch dog signals sent from the partner computer are normal or not, and, when there is an abnormality in any computer, stopping the servo press (1) for emergency.

Abstract: An apparatus for applying an image to a spherical surface utilizing a heat transfer device having a heating die with a convex surface. The concave surface allows for the transfer of an image onto an object having a spherical surface, such as a baseball or softball, without deforming said object.

Abstract: A stamping press has a pair of plates defining a press gap between them, a hydraulic ram to produce relative movement between the plates to close the press gap and apply pressure to the die against a substrate in the gap, a hydraulic pump driven by an electric motor through a flywheel means for shutting off the motor on reaching a predetermined pressure in the circuit, and a dump valve for dumping hydraulic pressure from the circuit.

Abstract: The present invention relates to a method of controlling a ram speed of a press ram of a metal-forming press, and a driving device, in particular for carrying out this method. According to the present invention, at least one energy storage device is connected to an auxiliary drive having connected thereto the main drive for controlling the ram speed, said energy storage device having supplied thereto the energy released during a negative acceleration of the press ram while from said energy storage device additional energy for the acceleration of the press ram during a further stroke is recovered and fed into the main drive via the auxiliary drive.

Abstract: .hsc A waste bale press of horizontal construction used for manufacturing bound bales of predominantly organic waste materials, such as paper, cardboard, wood boxes or other used packaging materials includes a press shaft with a filling shaft in front of the press shaft and a drive portion arranged in front of the filling shaft. The drive portion includes two hydraulic cylinders which are arranged so as to intersect in the basic position thereof and whose free piston rod ends act on the press plate. The ends of the hydraulic cylinders are connected in an articulated manner on brackets or the like located laterally of the press housing outside of the parallel limiting walls of the press housing in the most rearward part of the drive portion.

Abstract: A modular filter apparatus is formed from stacked filter modules. Slurry to be filtered flows into the apparatus through a flowmeter and check valve into a header. The flow of slurry then branches off through feeders to each of the filter modules. Connected to the header is a slurry supply source, a cakewash supply source and a header drain. The modules are coupled to a hydraulic jack mechanism and an upper strongback.

Abstract: Learning control is adopted in slide control of a press, and the actual behavior pattern of the slide is converged to the optimum pattern thereby breakage of a metal mold or the like can be prevented. The slide control device is provided with a linear motor or a servo motor driving the slide in reciprocation, a position detector detecting position of the slide, and a control circuit fixing and storing previously the command value of the optimum pattern of behavior of the slide, and calculating error between the real position data from the position detector and the fixed command value of the optimum pattern in a prescribed period of time from the drive start of the slide, and correcting the command value to be outputted in order to eliminate the error and outputting the command value after the correction and controlling the linear motor or the servo motor.

Abstract: The present invention relates to a fail-safe automatic sliding operation control apparatus for a press. The entrance and withdrawal behaviors of an operator's hand relative to danger zones (D, D.sub.N) on a bolster of the press are detected by an output generation configuration of two optical curtains. A signal for permitting a lowering operation of the slide is generated when the operator's hand is withdrawn from the danger zones (D, D.sub.N).

Abstract: A ram driving device for a press machine having: a ram; a horizontal drive axle (33) rotatably provided horizontally in a frame (3) of the press machine; a motion converting mechanism (35, 63, 83) associated with the horizontal drive axle, for converting a rotational motion of the horizontal drive axle into up-and-down motion of the ram (29); and a plurality of servomotors (43, 47) linked with the horizontal drive axle, for rotating the horizontal drive axle in synchronism with each other, to drive the ram up and down. The motion converting mechanism is a connecting rod (35); and a link mechanism (63) driven by a ball screw (61) and a nut member (77); and an eccentric ring cam (33) and a cam follower (91). Since the ram can be driven by a plurality of the servomotors synchronously, the device can generate a large press power of various moving stroke and various moving speed freely, without increasing the maintenance cost thereof.

Abstract: A control apparatus and method for progressively fracturing a work piece from a material sheet in a mechanical press in which the separation distance between an upper die and a lower die is varied in discrete steps as an upper platen advances the upper die toward the lower die, each discrete step occurring within the thickness of the material being stamped. Varying the separation distance includes a motion opposite to the relative direction movement of the upper platen at one or more predetermined distances to create a controlled release of stored forces in the dies and press frame. A distance measuring transducer generates an output indicative of the position of the upper die in relation to the lower die.

Abstract: A filter press for reducing the water content in a starting material including a pressure chamber with a stationary lower plate and five hydraulically mobile chamber walls for applying pressure to the starting material.

Abstract: A bump leveling method and a bump leveling apparatus in which the leveled height of bumps can be made constant and meet the change in thickness of an IC chip. A pressing force under which one bump is deformed to a prescribed height is measured. Thus, the pressing force under which a plurality of bumps can be deformed and leveled can be set. A load cell detects that a prescribed pressing force is exerted on the bumps and this pressing force is maintained, so that the plurality of bumps can be leveled up to the same prescribed height.

Abstract: A ram driving device for a press machine having: a ram; a horizontal drive axle (33) rotatably provided horizontally in a frame (3) of the press machine; a motion converting mechanism (35, 63, 83) associated with the horizontal drive axle, for converting a rotational motion of the horizontal drive axle into up-and-down motion of the ram (29); and a plurality of servomotors (43, 47) linked with the horizontal drive axle, for rotating the horizontal drive axle in synchronism with each other, to drive the ram up and down. The motion converting mechanism is a connecting rod (35); and a link mechanism (63) driven by a ball screw (61) and a nut member (77); and an eccentric ring cam (33) and a cam follower (91). Since the ram can be driven by a plurality of the servomotors synchronously, the device can generate a large press power of various moving stroke and various moving speed freely, without increasing the maintenance cost thereof.

Abstract: A can crusher and storage system is provided including a piston housing having a first face, a second face, and a periphery formed therebetween defining an interior space. The piston housing has an inlet formed in the periphery thereof adjacent the first face. A thin rectangular outlet is formed in the periphery of the piston housing between the inlet and the first face and is further situated opposite of and offset from the inlet. Next provided is a piston assembly situated within the interior space of the piston housing for crushing cans situated within the inlet upon the actuation thereof. A control assembly is provided for selectively actuating the piston assembly.

Abstract: The invention is a press for cold working of metal workpieces. The invention includes a double-acting linear hydraulic power drive cylinder, a continuous press frame for accepting reactive forces that develop during the operation of the press, and a control valve system operable by output signals, and being one of program-controlled or manually triggerable, from an electronic control unit, for controlling motion of a piston of the drive cylinder.

Abstract: A die height correcting apparatus for a press having sides formed by C-shaped frames and a slide to be driven up and down being provided on an upper portion of a press body, includes an auxiliary frame provided on the side surface of at least one of the C-shaped frame. The lower end side of the auxiliary frame is pivotably mounted on the C-shaped frame and has a free end at the upper end side, a slide position detector provided on the upper end side of the auxiliary frame, and a temperature detector provided at least on the upper end side of the auxiliary frame among the upper end side of the auxiliary frame and the slide position detector. The slide is NC controlled on the basis of a slide position detected by the slide position detector, the temperature detector detects a temperature of the upper end side of the auxiliary frame among the upper end side of the auxiliary frame and the slide position detector.

Abstract: An apparatus and method for applying variable pressure to a moving surface, such as a moving web of corrugated paperboard. The apparatus includes a frame secured to a fixed structure and located proximate to a heated platform. A number of pressure applicators having movable pressure-applying feet are mounted on the frame. The moving surface moves between the heated platform and the feet of the pressure applicators. The pressure-applying feet are movable in a direction substantially perpendicular to the moving surface. This allows the pressure-applying feet to press the moving surface against the heated platform as the moving surface moves between the heated platform and the feet of the pressure applicators. Each pressure applicator may be independently controlled, typically by an inflatable air bladder, to apply variable pressure to the moving surface.

Abstract: A control and safety system for coordinating movement of multiple hydraulic cylinders to reciprocally rotate a truck-mounted refuse compacting arm. The system includes a logic board controller in communication with a cam and switch arrangement mechanically linked to the rotating arm. Signals from the switches indicate the position of the arm to the logic board which responds by operating directional control valves to regulate movement of the cylinders. A pressure switch is activated to rotate the arm in the opposite direction if the arm is prevented from reaching a limit switch.

Abstract: A machine for manufacturing corrugated board including one or more flexible, disposable covers for the pressure-applying feet of the machine. The covers prevent wear and tear to the bottoms of the pressure-applying feet and may be easily replaced, as needed. In a belt-driven machine, the disposable covers may be located between the pressure-applying feet and the conveyor belt. In a machine with a beltless hotplate section, the conveyor belt is replaced by a pulling section located downstream from the hotplate section and the disposable covers may be located between the pressure-applying feet and the moving surface. The covers allow the thickness of the corrugated board to be varied while the board is moving through the machine without causing the leading edge of an added layer to catch on the upstream edges of the pressure-applying feet. In addition, the covers and/or the pressure applicators may be moved in the cross-machine direction to minimize waste when manufacturing different widths of corrugated board.

Abstract: The present invention is directed to an apparatus and method for applying variable pressure to a surface. The apparatus includes a frame secured to a fixed structure and located proximate to the surface. The frame is in movable relation with a pressure applicator in a direction substantially perpendicular to the surface. The pressure applicator is connected to a pressure source. The pressure applicator contacts the surface. A mechanical compensator is mounted integrally with the pressure applicator to enable the pressure applicator to compensate for any variations in the contour of the surface. The present invention also includes a control device for varying the pressure supplied to the pressure applicator that is ultimately applied to the surface.

Abstract: A process supplies energy to electronically controlled drives, particularly drives for workpiece handling devices, in and on a press having a press slide. The workpiece handling devices are electromechanically driven and electronically controlled. In the event of a power supply system outage, at least the workpiece handling devices are supplied at least for a short time by an intermediate circuit of a drive amplifier or an uninterruptable power supply system with voltage. Thereby, all devices important for the movement of the workpiece handling devices are supplied with voltage from the intermediate circuit or the uninterruptable power supply system.

Abstract: In a die cutting press for elongated material, a registration system includes a die unit that is shiftable along the path of travel of the material, along a direction of travel transverse to the path of travel, and about a reference axis perpendicular to a plane containing the material. At least one camera is provided for receiving images from the desired locations that are occupied by indicia on the material when defined areas of the material are in a predetermined relationship relative to the die unit. Reference image data representative of the desired locations of the indicia relative to the die unit is produced so that a comparison can be made between the reference image data and the actual positions of the indicia.

Abstract: Apparatus for partial dewatering of raw sludge, includes at least two filter units each defining a filter chamber which receives raw sludge and has an outer wall surface formed as filter for discharge of filtrate from raw sludge. Accommodated within the filter chamber is a double-acting plunger which extends across the entire cross section for dividing the filter chamber in two working chambers, and reciprocates in the filter chamber along the inside wall surface for movement between a first end position and a second end position, with each working chamber having an inlet for receiving raw sludge from a suitable conveying unit and an outlet for discharge of partially dewatered raw sludge.

Abstract: A portable waste container having a built-in DC-to-hydraulic power converter and hydraulic compaction system to provide for efficient waste management. The hydraulic power converter is connected to a source of electrical power, preferably a vehicle battery by jumper cables located within the portable waste container. A telescoping cylinder ram and platen mechanism use power obtained from the DC-to-hydraulic conversion to compact the waste. The opening of the waste container has a second angled side which rests above the platen to both increase the traditional opening size and decrease the pressure of compacted trash against the top of the platen therefore reducing the amount of waste returning back into the hopper section after compaction.

Abstract: In a hot press according to the present invention, a control panel detects the fact that the viscosity of bonding resin of multilayer circuit board materials is minimized by taking thereinto at least one of the values measured by a speed sensor of a lower bolster, a measuring portion for measuring a control current of an electromagnetic proportional relief valve and a relief amount detector for detecting the relief amount of the electromagnetic proportional relief valve, and gives an instruction of an optimum air pressure addition timing. Accordingly, even if the multilayer circuit board materials and the like are varied, it is always possible to change over from a vacuum condition to an air pressure added condition at the best timing, thereby making it possible to obtain a multilayer circuit board of a uniform thickness without causing generation of void.

Abstract: A unique system and process for controlling the stroke positions of tools on a multi-station metal working machine are disclosed. The system and process are suitable for use with a metal working machine which carries the tools on an arm pivoted by an actuator. In the preferred embodiment, the control system includes a control circuit which continuously senses the position of the arm by use of a pulse generator rotary encoder. The control system stores settable initial and final stroke positions for each of the tools. The actuator is controlled to move the arm and the tools carried thereon.

Abstract: A continuously operating press for the production of particle boards, fiber boards and similar wood boards and plastic boards, wherein a spherical geometrical deformation of the press/heating platen in the longitudinal and transverse directions with the hydraulic actuators in positive or non-positive engagement with the press/heating platen is set during start-up or production by means of different actuating forces in the longitudinal and transverse directions, the setting process being independent of the reaction forces of pressing stock, wherein, to allow a convex bending deformation to be set at the maximum pressing force, the central actuators in each row of actuators are dimensioned to give 105% to about 150% of the maximum pressing force in relation to the outer actuators, and wherein each row of actuators has a position sensor system comprising a feeler rod, a reference gauge bar, a lever mechanism and a measured-value transmitter with a position sensor for the press-nip actual value in the center of t

Abstract: The present invention is directed to an apparatus and method for applying variable pressure to a surface. The apparatus includes a frame secured to a fixed structure and located proximate to the surface. The frame is in movable relation with a pressure applicator in a direction substantially perpendicular to the surface. The pressure applicator is connected to a pressure source. The pressure applicator contacts the surface. A mechanical compensator is mounted integrally with the pressure applicator to enable the pressure applicator to compensate for any variations in the contour of the surface. The present invention also includes a control device for varying the pressure supplied to the pressure applicator that is ultimately applied to the surface.

Abstract: A hydraulic press of the type having at least one hydraulic pump driven by a rotary shaft and a hydraulically operable ram is provided with an improvement comprising a flywheel connected to the pump shaft. According to another aspect, the ram is reciprocated between retracted and extended positions by rotating the pump shaft and the flywheel at a predetermined rotational speed so as to operate the pump(s) and deliver fluid to the hydraulically operable ram.

Abstract: A trash collection and compacting apparatus primarily intended for use onboard an aircraft comprising a stationary compactor unit and interrelated movable wheeled trolley unit, the trolley unit having a plurality of separate trash collection chambers into which trash is deposited and compacted and support rails for supporting the trolley unit on the compactor unit for the direct compaction of trash in the trolley. The trolley unit also has separable sides to facilitate removal of compacted trash, and multiple fail safe locks and latches to ensure that the sides are not inadvertently separated during trash collection and compaction. Fire doors are provided to close the chambers, and removable trash bins are disposed in each trash chamber to facilitate handling of compacted trash, the bins having separable sides for emptying the compacted trash therefrom.

Abstract: A method for controlling a drive for a hydraulic press employed for at least one of forming and cutting sheets of metal. The method involves a press comprising: a press ram and at least one piston-cylinder unit operatively connected to the press ram and including a drive piston having an upper side and a lower side, the drive piston further comprising an upper cylinder chamber communicating with the upper side, and a lower cylinder chamber communicating with the lower side. The method comprises the step of pressurizing the drive piston with hydraulic medium on at least one of its upper side and its lower side for driving the press ram.

Abstract: An apparatus for adjusting bottom-dead-center position of a slide in mechanical press including a connecting rod 4 connected to a crank shaft 3, and a hydraulic cylinder 15 provided between the connecting rod 4 and a slide 5. The hydraulic cylinder 15 has a piston rod 16 having one end connected to the connecting rod 4, a cylinder body 17 capable of moving relative to the piston rod 16, a hydraulic chamber 27 formed below a piston portion 16A, and a pressure adjusting means 45 connected to this hydraulic chamber 27. An extending member 19 for connecting the connecting rod and the cylinder body is fitted around an outer periphery of the piston rod 16, and the adjustment of the bottom-dead-center position of the slide can be effected as the extending member 19 is extended by the adjustment of hydraulic pressure within the hydraulic chamber 27.

Abstract: A method and apparatus for controlling the stopping position of a press brake punch is provided. Hydraulic control is provided so that the variations in punch stopping positions due to variations in manifold valve response times are minimized. A variable displacement hydraulic pump and a solenoid valve are used in conjunction with manifold valves in order to precisely stop a press brake punch. When it is desired to stop the punch, the solenoid valve is shifted and pump output begins to decrease before the manifold valves begin to shift.

Abstract: An automatic control for a cotton module builder controls the traversing motor which moves the tamping mechanism in a horizontal direction atop the cotton module builder as well as the packing cylinder which moves a tamping platen up and down. The automatic controller operates continuously in predetermined cycles having adjustable durations. In a first portion of each predetermined cycle the tamping platen is moved up. In a second portion of each predetermined cycle the tamping platen is moved down to compress any cotton within the bin of the cotton module builder located directly below the tamping mechanism. In an overlap portion located about a transition between the first and second portions of each predetermined cycle, the traversing motor is activated to move the tamping mechanism in a predetermined direction for a predetermined distance so as to place the tamping platen over another portion of the bin.

Abstract: A multipurpose, automatic, self-contained device for manufacturing or repairing a workpiece made from a composite material includes a frame having an upper frame member and a lower frame member. A mechanical apparatus for providing a compressive force is mounted to the lower frame member and a lower platen is mounted to a movable member of the apparatus. An upper platen, positioned opposite to the lower platen, is mounted to the upper frame member. At least one heater is associated with at least one of the platens to apply heat to the workpiece and at least one temperature sensor is provided for mounting to the workpiece. The lower platen is moved toward and away from the upper platen by the mechanical apparatus to apply a compressive force to the workpiece disposed between the platens as a function of the temperature sensed from the workpiece and/or according to a predetermined schedule or plan.

Abstract: The device of the present invention removes suspended solids from a liquid medium, such as particles in an oil-based sludge. The device includes a filter chamber having an inlet for introducing liquid into the chamber, with the liquid containing suspended solids. The chamber also has an outlet for releasing filtered liquid which is substantially free from suspended solids. The liquid coming into the chamber is forced through a filter element to remove the suspended solids therefrom. The removed solids are compressed in the chamber by a reciprocating piston. When a sufficient quantity of suspended solids accumulate within the chamber, a discharge valve is opened and the compressed solids are discharged from the chamber. The device is operated automatically by a computer, which controls a series of operation cycles, including normal filtering operation, compression of solids, purging of solids, and cleansing of the filter element.

Abstract: A can crusher for environmental protection is generally composed of a hydraulic pump to drive a piston, upwardly or downwardly. When the piston is driven downwardly, a plate is driven downwardly to crush a can. A groove is formed at an inner bottom portion to drain any residues left in the can to a collecting pan.

Abstract: A screw press for dehydrating slurry and comprising an outer screen casing, a screw shaft, a slurry supplying portion, and a driving unit which rotates the outer screen casing and the screw shaft. The driving unit rotates the screw shaft in one rotational direction and the outer screen casing in the opposite rotational direction. The driving unit comprises a transmission for changing the rotational frequency of at least one of the outer screen casings or the screw shaft. It is possible to have a high dehydrating effect by rotating the outer screen casing in the opposite rotational direction of the screw shaft at a predetermined rotational frequency.

Abstract: A shutheight adjustment mechanism of a press including a male threaded member threadedly engaged to a female threaded member with a clearance space therebetween is flooded with a liquid to reduce undamped free movement between the threaded members. Liquid injected in the clearance space causes a squeeze-film to be created, capable of supporting high impulse working loads. Seals define the clearance space to assure that the entire clearance space is filled with liquid. In one embodiment, the shutheight adjustment mechanism is included in the press slide.

Abstract: A method for checking the driving and control system of a hydraulic punch press is provided which comprises the steps of delivering a stop order signal to the driving device, sensing the position of the sliding punch member along its stroke and comparing the time or the distance required by the punch member to come practically to a stop, with preset reference values, and producing a fault signal when the time or distance exceeds the preset reference values.

Abstract: An improved oil filter crusher, includes a cylinder positioned over a movable platform. Upon initiation of operation of the crusher, the platform moves upwardly toward a base member of the cylinder to crush the oil filter and discharge oil therefrom.

Abstract: The present invention is to provide a fail-safe slide operation control device for a press of simple structure when the electronic circuit by fail-safe signal processing as a circuit for monitoring overrun and confirming the OFF condition of an operation button, which is important function to control the slide, is used instead of a contact circuit composed of relays.