JP2009106962A - Press machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure the safety of an operator, and to quicken and facilitate an arrangement operation. <P>SOLUTION: Under the conditions where an arrangement position stop practicing declaration is performed, and also, a detection slide position and a set arrangement position are equal, although a forming movement command operation is continued, a motor rotation driving control is forcedly interrupted, so as to changed to an arrangement position stop control, and, under the conditions where the forming movement command operation is temporarily released, and also, the same is performed once more after that, the arrangement position stop control is released, so as to be changed to return to the interrupted rotation driving control. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  A press that is equipped with a slide drive control device and that controls the rotation of the motor based on molding operation information, and that is capable of press molding within the set area while converting the rotary motion of the motor to the slide up / down motion via the slide drive mechanism Related to machinery.

  A press machine using a servo motor can easily set (select) and change various slide motions (for example, Patent Document 1). Since the slide can be temporarily stopped, lowered at a low speed, and reversed up and down, the adaptability to the press molding mode can be expanded and a high-quality product can be produced.

  In such a press machine, the slide drive control device (motor rotation control unit) controls the rotation of the motor in accordance with preset molding operation information (molding operation command signal). The slide drive mechanism unit drives the slide by using the motor rotation power generated by the motor rotation as an input. As the slide drive mechanism, a crank mechanism, a link mechanism or a screw mechanism is known, but in any slide drive mechanism, the molding operation information is defined as a slide position for each process (time, angle, etc.) Created).

  8 and 9 show an example of slide motion and motor speed for press molding (production) when the slide drive mechanism is a crank mechanism. In one step (time t1 to t2) in FIG. 8, when the lowest position (bottom dead center) is set to zero (0 mm), the slide is lowered from the point A height (100) to the point B (50). In 2 steps (time t2-t3), it falls from B point (50) to C point (0). In step 3, the slide is raised to the uppermost position (top dead center: not shown). The slide speed is constant except for the acceleration / deceleration range.

  By the way, before the first press production, a slide drive is performed by a trial operation similar to an actual press operation, and a so-called setup operation (for example, whether or not interference with a mold or peripheral equipment occurs at point A is checked. Prediction confirmation regarding the molding state is performed at point B).

  In order to temporarily stop the slide at the point A, the slide is lowered in a so-called inching mode. Whether the actual press operation is performed in the inching mode, the safe one-stroke mode, or the continuous mode, the slide is lowered in the same operation mode as in the inching mode only in the setup operation.

  That is, when it comes before point A, the operation button is pressed for an extremely short time to reduce the slide lowering amount. By repeating this operation, the slide is gradually brought closer to point A (100 mm) and stopped at that position. The same applies when stopping at point B. Therefore, careful work is required and it takes a long time. There is a lot of variation in working hours because it depends largely on the experience and familiarity of the workers.

  In order to make full use of the advantages of servo presses and to further spread and expand, it is important to make it easy to stop the slide positioning and shorten the time required for the setup work prior to production.

Here, information for automatically stopping the slide at points A and B is incorporated in advance in the molding operation information for actual press operation. Then, there is a concept of automatically returning to the actual press operation based on the forming operation information when a predetermined time for the setup work elapses.
JP 2003-205395 A

  However, this idea is to set a slide stop time at the setup work position (for example, point A). If this is left to the experience and familiarity, if the set time is set short, the setup work tends to be unfinished, and if it is set long, it wastes time and decreases productivity. There is a strong fear.

  Further, a method of automatically returning by an electric signal (for example, a conveyance end signal) that is automatically issued is used. That is, a situation occurs in which the slide suddenly starts during the setup work. There is no danger.

  Furthermore, the slide is always stopped every time it is activated (started up). In some cases, the stop time is wasted. It is pointed out that it goes against productivity improvement.

  In particular, a review is required from the practical point of view of the setup work from the viewpoint of workability and productivity, in combination with the relationship between the shortage of work personnel and the like.

  The objective of this invention is providing the press machine which can perform a setup operation | work quickly and easily, ensuring a worker's safety reliably.

  The press machine according to the first aspect of the present invention includes a slide drive control device that rotationally controls the motor based on the molding operation information, and converts the rotational motion of the motor into a lift motion of the slide via the slide drive mechanism. In the press machine formed so as to be capable of being press-formed, the rotation drive control can be continuously executed as long as the operator continues the forming operation command operation, the setup position stop execution declaration is made, and the slide The slide is set by forcibly interrupting the motor rotation drive control even though the molding operation command operation is continued on the condition that the position is determined to be equal to the preset setup position. It is possible to switch to the setup position stop control to stop at the position, and the molding operation command operation is once canceled during the setup position stop control, and then it is performed again. Back to release to the rotation drive control and had been interrupted setup position stop control is switchable formed.

  The press machine according to claim 2 is provided with a slide drive control device that rotationally controls the motor based on the molding operation information, and converts the rotational motion of the motor into a lifting motion of the slide via the slide drive mechanism. In a press machine formed so as to be capable of being press-molded, a molding operation command signal generating means for generating a molding operation command signal is provided when an operator performs a molding operation command operation, and the slide drive control device is molded. As long as the operation command signal is continuously generated, the rotation drive control is formed so as to be continuously executable, a setup position setting means for setting the setup position, and a storage means for storing the set setup position Whether the setup position stop execution declaration means for making the setup position stop execution declaration is equal to the detected slide position and the set setup position stored in the storage means The molding operation command signal is continuously generated on the condition that the determination means capable of discriminating and the setup position stop execution declaration have been made and the discrimination means has determined that the detected slide position is equal to the stored set setup position. A setup position stop control means for performing setup position stop control for forcibly interrupting the motor rotation drive control of the slide drive control apparatus and stopping the slide at the storage set setup position despite being performed. And a setup position stop release signal generating means for generating a setup position stop release signal on condition that the molding operation command signal once disappears during setup position stop control and is then generated again, and a setup position. Return switching control means for canceling the setup position stop control and switching back to the interrupted rotation drive control when the stop cancellation signal is generated is provided.

  According to a third aspect of the present invention, the molding operation command signal generating means is configured to be able to generate the molding operation command signal on condition that two push buttons are simultaneously pressed with both hands. Furthermore, in the invention of claim 4, the storage means is formed so as to be capable of storing a plurality of stages of set-up positions.

  According to the first aspect of the invention, the setup work can be performed quickly and easily while ensuring the safety of the worker. Productivity can be greatly improved because the time required for setup work can be reduced.

  According to the invention of claim 2, in addition to being able to achieve the same effects as those of the invention of claim 1, since the operator's intention confirmation is reflected, the adaptability is wide and the handling is easy.

  Further, according to the invention of claim 3, in addition to achieving the same effect as that of the invention of claim 2, ensuring the safety of the upper body of the worker is perfect. Furthermore, according to the invention of claim 4, in addition to being able to achieve the same effects as those of the inventions of claims 2 and 3, the operational flexibility is wide.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

(First embodiment)
As shown in FIGS. 1 to 6, the press machine 1 forms the slide drive control device 30 so that rotation drive control can be continuously executed as long as the molding operation command signal S is continuously generated. Signal generation means 10 (10L, 10R), setup position setting means 25P, storage means 23P, setup position stop execution declaration means 25D, determination means (21, 22, 23), setup position stop control means (21, 22) 23), a setup position stop release signal generating means (10) and a return switching control means (21, 22, 23), a setup position stop execution declaration is made and the detected slide position is preset. The motor rotation drive control can be forcibly interrupted and switched to the setup position stop control even though the molding operation command operation is continued on the condition that it is determined that the setup position is equal. Operation command On condition that the work is made once released and then again, and is switchable formed back to release to and rotates the drive control has been interrupted setup position stop control.

  To be sure, the press machine 1 includes a slide drive control device 30 that rotationally controls the motor 7 based on the forming operation information, and converts the rotational motion of the motor into the lifting motion of the slide 6 via the slide drive mechanism (2). However, it is formed so that it can be press-molded within the set region.

  In FIG. 1, the slide drive mechanism is composed of a crank mechanism 2 including a crankshaft 3 (crank portion 4). The crankshaft 3 can be reversibly rotated (forward rotation, reverse rotation) by rotation control of an AC (alternating current) servomotor 7 that is rotatably supported by a bearing and directly connected thereto. The servo motor 7 may be a DC (direct current) servo motor or a reactance motor.

  In addition, you may connect the crankshaft 3 and the motor 7 indirectly via a gear (reduction gear). A higher pressurizing force can be obtained through a gear (reduction gear). Further, the slide drive mechanism can be implemented even when formed from a link mechanism or a ball screw mechanism.

  The slide 6 is mounted on the frame body so as to be slidable in the vertical direction, and is engaged with the balance device. If the crankshaft 3 is rotationally driven, the slide 6 can be driven up and down via the connecting rod 5. The mold is composed of an upper mold on the slide 6 side and a lower mold on the bolster (not shown) side.

  The encoder 8 connected to the AC servomotor 7 has in principle a large number of optical slits and optical detectors, and outputs the rotation angle (crank angle) θ of the motor 7 (crankshaft 3). In this embodiment, a signal converter (not shown) that converts the rotation angle (pulse signal) into the vertical position (pulse signal) of the slide 6 and outputs it is included.

  In FIG. 1, a press control panel 20 includes a CPU 21, a non-volatile memory (ROM, HDD, etc.) 22, a memory (flash RAM, etc.) 23 capable of storing data even when the power is turned off, and a touch panel 24 (operation unit 25 and display unit). 26) and interfaces 27 and 28, and generates and outputs a slide drive control command signal Smtn to the slide drive control device (motor rotation control unit) 30 by a press operation program stored in the memory 22 to control the rotation of the servo motor 7. The slide 6 can be moved up and down. In FIG. 1, items relating to the workpiece transfer device and the like are not shown.

  The forming operation information (motion trajectory) of the slide 6 is data in which the elapsed time t (or may be an angle θ) and the slide position P are associated with each other as shown in FIG. it can. The set molding operation information is stored in the molding operation information area 22mtn in the nonvolatile memory 22 so that it can be selected and used later. The molding operation information selected prior to the press operation is expanded in the memory 23 that can store and hold it.

  When the desired forming operation information is selected using the operation unit 25 during the press operation, the slide drive control command unit (21, 22, 23) having the position pulse delivery system structure is operated by the press operation program ( The slide drive control command signal Smtn is output to the slide drive control device 30 according to the drive control command signal generation output control program).

  For example, if the motor rotation speed is 120 RPM, the number of pulses output from the encoder 8 per rotation (360 degrees) is 1 million pulses, and the payout cycle time is 5 mS, it is output every cycle (5 mS). The number of pulses is 10,000 pulses [= (1000000 × 120) / (60 × 0.005)].

  As a measure for preventing a sudden torque change, an acceleration section (the number of output pulses is gradually increased) is provided immediately after startup, and a deceleration section (the number of output pulses is gradually decreased) immediately before stop as shown in FIG.

  In the slide drive control device 30 that has received this slide drive control command signal Smtn, the position comparator 31 receives the slide drive control command signal Smtn, which is the target value, and the actual slide position signal (feedback signal f) detected by the encoder 8. Are generated and output. The position / speed control unit (position control unit) 32 accumulates the input position deviation signal, multiplies it by a position loop gain, and generates and outputs a speed signal. A speed comparator (not shown) compares the speed signal with the speed signal from the speed detector (encoder 8) (in this case, the speed component of the signal f) and generates and outputs a speed deviation signal.

  The speed control unit multiplies the input speed deviation signal by a speed loop gain and generates and outputs a current command signal to the current control unit (amplifier 33). This current command signal is substantially a torque signal.

  The amplifier 33 generates each phase target current signal and generates and outputs a current deviation signal. Subsequently, a PWM signal is generated from the current deviation signal of each phase by PWM control and pulse width modulation. Finally, switching (ON / OFF) control is performed by each PWM signal, and each phase motor drive current U, V, W can be output. Thus, the servomotor 7 can be rotationally driven.

  Here, the molding operation command signal generating means 10 is a means for generating the molding operation command signal S when the molding operation command operation of the operator is performed. As this means, there are various types such as one push button type that can be pressed with both hands, knife switch type and foot switch type. In this embodiment, from the viewpoint of workability of the operator and protection of the upper body (mainly wrist). The two push buttons 10L and 10R shown in FIG. 1 are formed.

  That is, the molding operation command signal S can be continuously generated while the left and right push buttons 10L and 10R are continuously pressed with both hands. As long as the molding operation command signal S is continuously generated, the slide drive control device 30 is configured to be able to continuously execute the rotational drive control according to the slide drive control command signal Smtn.

  Next, the setup position setting means is a means for setting a setup position (sliding position), and is formed from a numeric key 25P or the like in the operation unit 25. The setup position (for example, “A point in FIG. ”,“ B point ”, and“ C point ”slide positions) can be set. This set-up position is stored and held in the storage means (memory 23P) as shown in FIG. In this embodiment, the speed is also linked and stored.

  The setup position stop execution declaration means is formed from a declaration key 25D, and is used for making an execution declaration for forcibly stopping the slide 6 at the set setup position (YES in ST15 of FIG. 3). This execution declaration can be formed so that only one press cycle is required, but in this embodiment, it can be declared for each set-up position (Pin) (YES or NO in ST15 in FIG. 3). ).

  The discriminating means (21, 22, 23) is formed from the memory 22 storing the discriminating control program, the developing memory 23, and the CPU 21 that executes the program, and is stored in the detected slide position Pi and the storage means 23P. It is determined whether or not the set setup positions (for example, “A point = 100”, “B point = 50”, “C point = 0” mm) are equal to each other) (ST16 to ST18 in FIG. 3).

  The setup position stop control means (21, 22, 23... Is the same as in the case of the discrimination means. The same applies hereinafter) is made when the setup position stop execution declaration is made (YES in ST15) and the slide position detected by the discrimination means. The setup position stop control is performed on the condition that it is determined that Pi and the stored setting setup position (Pin) are equal (YES in ST18).

  In the setup position stop control for stopping the slide 6 at the memory setting setup position (Pin), the molding operation command signal S is continuously generated from the molding operation command signal generating means (21, 22, 23). Nevertheless, the forced stop signal SStp is output to forcibly interrupt and stop the motor rotation drive control of the slide drive control device 30. Prioritize worker experience and familiarity. The interruption stop is a state in which the position deviation input to the position / speed control unit 32 is zero (motor lock).

  During the setup position stop control (YES in ST30 in FIG. 4), the setup position stop release signal generating means (21, 22, 23) once extinguishes (YES in ST31) and thereafter A setup position stop release signal (S) is generated on the condition that it is generated again (YES in ST32) (ST33, YES in ST20 of FIG. 3). It is preferable to manage an allowable time (for example, within 1 second) from once disappearing to reoccurring.

  The return switching control means (21, 22, 23) cancels the setup position stop control and interrupts the slide drive control command signal Smtn when the setup position stop release signal is generated (YES in ST20). Switch back to the rotational drive control based on (ST21).

  Note that “Pin” described in ST14 of FIG. 3 indicates the final set-up position. When there are three set-up positions (first A point, second B point, and third C point), Pin is the third C point (0).

  However, in the case of ST22, an arbitrary set-up position is indicated. When the first operation (ST10 to ST21) is completed, the next operation is updated to the second operation (Pin = Pin + 1). The update from the second to the third (stepping) is the same.

  In this embodiment, when the current slide position Pi is not equal to or higher than the third set setup position (C = 0) (NO in ST14), the setup position stop control operation (ST15 to ST22) does not proceed. Return to the normal operation side (ST10).

  It should be noted that the slide position Pi while the slide is rising is set to a minus (−) position for convenience of handling.

  In the embodiment having such a configuration, when the push buttons 10L and 10R forming the molding operation command signal generating means 10 are simultaneously pressed with both hands, the molding operation command signal S is generated (YES in ST10 of FIG. 3). Then, the slide drive control command unit (21, 22, 23) outputs a slide drive control command signal Smtn to the slide drive control device 30.

  Thus, the rotational drive control of the motor 7 is started (NO in ST11, ST12, ST13). The slide 6 descends toward the point A shown in FIG. The motor speed is trapezoidal as shown in FIG. If the rotation drive control is being performed (YES in ST11), the process proceeds to ST14. In the middle, if one hand or both hands are released from the push buttons 10L, 10R, the rotational drive control is stopped (NO in ST10, ST23).

  When the detected slide position Pi is the first (A) set setup position Pin (= 100 mm) (YES in ST14), the setup position stop execution declaration using the setup position stop execution declaration means (25D) Is established (YES in ST15), the determination means determines that the detection (reading) position Pi of the slide 6 is equal to the first set-up position Pin during the slide lowering (ST16, ST17, YES at ST18).

  Then, the setup position stop control means (21, 22, 23) forcibly interrupts the motor rotation drive control even though the molding operation command signal S is continuously generated by the setup position stop control. Then, the slide 6 is stopped (ST19) at the storage setting setup position (A point... 100 mm). The elapsed time is t1.

  In other words, the operator visually confirms the current position Pi of the slide 6 and frequently pushes and releases the push buttons 10L and 10R according to experience and familiarity, and repeatedly moves the slide 6 to the first setup position (point A). There is no need for manual operation for positioning. Saves labor and time. Because it is released mentally and physically, it can concentrate on its original purpose (setup work).

  Since this forcible interruption / stop is a motor lock state in which the deviation in the slide drive control device 30 is zero, the slide 6 can be reliably fixed. Work safety can be guaranteed.

  On the other hand, the length of the forced interruption / stop time is formed so that it can be selected (designated) according to the skill level of the operator. That is, the worker makes a work end declaration and a slide lowering permission declaration according to his / her own intention at the timing when the setup work is believed to be perfect.

  The stop duration from the point A shown in FIG. 5 where the slide 6 is stopped to the stop release point (point A1) is determined by the operator's total ability. In other words, it is possible to allow a worker (person) with a low skill level to be cautious (relatively long time), and allow a high person to appreciate the contribution to productivity improvement (short time). It can be understood that it is extremely realistic and adaptable.

  Then, when the hand is released from the push buttons 10L, 10R, the molding operation command signal S once disappears (YES in ST31 in FIG. 4). Thereafter (for example, within 1 second), when the push buttons 10L and 10R are pressed again, the molding operation command signal S is generated again (YES in ST32). A setup position stop release signal (S) is generated on the condition that these declaration actions have been performed (ST33, YES in ST20 of FIG. 3). The safety of workers (personnel) is also secured.

  Thus, the setup position stop control is canceled and the process returns to the slide drive (down) based on the slide drive control command signal Smtn (ST21). Go down to point B. At this time, Pin (first A point = 100) is updated to the next Pin (second B point = 50) (Pin → Pin + 1) (ST22).

  Thereafter, the second (B-B1 point) and third (C-C1 point) shown in FIG. 5 are executed in the same manner as in the first (A-A1 point). Note that by not declaring stop execution (NO in ST15), it is possible to select not to execute the setup stop control for a part of the three set setup positions. In production press operation, stop execution declaration is not made for all.

  Thus, according to this embodiment, the molding operation command signal generation means 10 (10L, 10R), the setup position setting means 25P, the storage means 23P, the setup position stop execution declaration means 25D, and the discrimination means (21, 22) 23), setup position stop control means (21, 22, 23), setup position stop release signal generation means (10), and return switching control means (21, 22, 23) are provided to execute setup position stop execution. Even if the molding operation command operation is continued on the condition that the declaration is made and it is determined that the detected slide position is equal to the set setup position, it is possible to switch to the setup position stop control. Since it is possible to switch back to rotational drive control on the condition that the operation is once canceled and then performed again, it is possible to perform setup work quickly and easily while ensuring the safety of the operator. it can. Productivity can be greatly improved because the time required for setup work can be reduced.

  If the setup position stop execution declaration is made, the slide 6 can be accurately stopped at the set position even if the molding operation command operation is continued, so that interference with the mold and peripheral devices can be easily confirmed. That is, it is possible to perform stable setup work and shorten the work time without being affected only by the skill of the worker and experience. If the slide is stopped at the pressurizing position, the stopping time can be verified.

  In addition, the operator's intention in the form of a setup position stop execution declaration using the setup position stop execution declaration means 25D and a setup position stop release declaration using the molding operation command signal generation means 10 (10L, 10R). Since confirmation can be reflected, it is flexible and easy to handle.

  Further, since the molding operation command signal generating means is formed so as to be able to generate the molding operation command signal on condition that the two push buttons 10L and 10R are simultaneously pressed with both hands, the safety of the upper body of the worker is ensured. Ensuring is perfect.

  Furthermore, since the storage means 23P can store a plurality of setting setup positions, the applicability in operation is wide.

(Second Embodiment)
In this embodiment, the basic configuration and function are the same as in the case of the first embodiment, but in the case of the first embodiment (the detected position of the slide 6 using the encoder 8 and the storage means 23P). It is constructed so that the slide stop control can be executed by comparing with the set setup position using the.), And the slide stop control can be executed at the setup position stored using the electronic cam. ing.

  The stop control can be performed at the slide position by a signal generated at the position set in the electronic cam. In the case of FIG. 7, a signal that is turned on when the slide position becomes 80 mm while the slide is lowered and is turned off at 70 mm is generated. That is, the stop control can be performed in two stages of 80 mm and 70 mm while the slide is descending.

  Further, during the ascent, a signal is issued that turns ON when the slide position is 70 mm and OFF when it is 90 mm. That is, stop control is possible in two stages of 70 mm and 90 mm while the slide is rising.

  Since other configurations and operations can be easily understood from the first embodiment, description thereof will be omitted.

  Thus, according to this embodiment, the same effects as those of the first embodiment can be obtained. In addition, the utility of the present invention for those who are familiar with the handling of electronic cams can be enhanced.

  INDUSTRIAL APPLICABILITY The present invention can be used as various press machines intended to speed up and facilitate setup work and ensure personal safety, and can greatly contribute to improvement of productivity.

It is a block diagram for demonstrating the 1st Embodiment of this invention. Similarly, it is a figure for demonstrating a memory | storage means and the memory content. Similarly, it is a flowchart for explaining the action and operation. Similarly, it is a flowchart for explaining an operation for generating a setup position stop control release. Similarly, it is a timing chart for explaining a slide motion. Similarly, it is a timing chart for explaining a motor speed switching operation corresponding to FIG. It is a figure for demonstrating the electronic cam and setting value example which concern on the 2nd Embodiment of this invention. It is a timing chart for demonstrating a prior art example (slide motion). It is a timing chart for demonstrating a prior art example (motor speed switching operation corresponding to FIG. 8).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Servo press 2 Crank mechanism 6 Slide 7 Servo motor 10 Molding operation command signal generation means (setup position stop release signal generation means)
10L, 10R push button 20 press control panel 21 CPU (discriminating means, setup position stop control means, return switching control means)
22 Non-volatile memory (discriminating means, setup position stop control means, return switching control means)
23 Memory that can be stored (discriminating means, setup position stop control means, return switching control means)
23P storage means 24 touch panel 25 operation section 25D setup position stop execution declaration means 25P setup position setting means 30 slide drive control device (motor rotation control section)
32 Position speed controller

Claims (4)

A press machine that is provided with a slide drive control device that rotationally controls a motor based on molding operation information, and that is capable of press molding within a set region while converting the rotary motion of the motor into a lift motion of the slide via a slide drive mechanism In
As long as the molding operation command operation of the operator is continued, the rotation drive control is formed so as to be continuously executable,
The motor rotation drive control is performed in spite of the molding operation command operation being continued on the condition that the setup position stop execution declaration is made and it is determined that the slide position and the preset setup position are equal. It is possible to switch to setup position stop control that forcibly interrupts the slide and stops the slide at the set setup position.
The setup position stop control is canceled on the condition that the molding operation command operation is once canceled during the setup position stop control and then re-executed, and can be switched back to the interrupted rotation drive control. Press machine. A press machine that is provided with a slide drive control device that rotationally controls a motor based on molding operation information, and that is capable of press molding within a set region while converting the rotary motion of the motor into a lift motion of the slide via a slide drive mechanism In
As long as a molding operation command signal generating means for generating a molding operation command signal is provided when an operator performs a molding operation command operation, and the molding operation command signal is continuously generated in the slide drive control device, Forming the rotational drive control to be continuously executable;
A setup position setting means for setting the setup position;
Storage means for storing the set setup position;
A setup position stop execution declaration means for making a setup position stop execution declaration;
Discriminating means capable of discriminating whether or not the detected slide position is equal to the set setup position stored in the storage means;
The molding operation command signal is continuously generated on the condition that the setup position stop execution declaration is made and the detection means determines that the detected slide position is equal to the stored setting setup position. Setup position stop control means for performing setup position stop control for forcibly interrupting the motor rotation drive control of the slide drive control device and stopping the slide at the storage setting setup position;
A setup position stop release signal generating means for generating a setup position stop release signal on the condition that the molding operation command signal once disappears during the setup position stop control and is then generated again;
A return switching control means for releasing the setup position stop control when the setup position stop release signal is generated and switching back to the interrupted rotation drive control;
Press machine.   The press machine according to claim 2, wherein the molding operation command signal generating means is configured to be able to generate the molding operation command signal on condition that two push buttons are simultaneously pressed with both hands.   The press machine according to claim 2 or 3, wherein the storage means is configured to be capable of storing a plurality of setting setup positions.

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