JP2017013093A - Press system and control method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a press system capable of speeding up press working, and a control method for the same.SOLUTION: A press system includes: a conveyance part for conveying a workpiece; a press part for performing press working by a slide ascending/descending operation for the workpiece conveyed by the conveyance part; a storage part for storing control data in which the slide ascending/descending operation and the operation of conveying the workpiece by the conveyance part are associated with each other; and a control part for controlling the press part and the conveyance part on the basis of the control data.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a press system, and more particularly to a press system for pressing a workpiece.

  In recent years, there has been a demand for higher precision of press-worked products (high accuracy in shape and dimensions) and higher speed of press work to improve productivity.

  In this respect, the conveyance timing of the conveyance device that conveys the workpiece (material) to the press device that performs the press working becomes important.

  Conventionally, the press device and the transport device are separately controlled, and the transport device adopts a method of receiving a cam signal from the press device and executing a transport operation according to the cam signal.

  In this respect, it is necessary to adjust the cam signal so that the press processing of the press device and the transport operation of the transport device do not interfere with each other. In Japanese Patent Laid-Open No. 2003-245800 (Patent Document 1), the press in the slide motion is required. A method has been proposed in which it is determined whether or not the molding and the material conveying operation of the conveying device for conveying the material interfere with each other, and the speed of the motor is adjusted so that it can be avoided if there is an interference.

JP 2003-245800 A

  On the other hand, since the press device and the transport device are controlled separately as described above, it is necessary to secure a margin for signal processing of each device, which becomes a bottleneck and is used for press processing of the press device. Speeding up was difficult.

  SUMMARY An advantage of some aspects of the invention is that it provides a press system and a control method of the press system that can increase the speed of press working.

  In a press system according to an aspect, a conveyance unit that conveys a workpiece, a press unit that performs press processing by a lifting and lowering operation of a slide with respect to the workpiece that is conveyed by the conveyance unit, and a lifting and lowering operation of the slide and a conveyance operation of the workpiece by the conveyance unit are associated. A storage unit that stores the received control data, and a control unit that controls the press unit and the conveyance unit based on the control data.

  According to the present invention, the control unit executes the synchronization process of the slide lifting / lowering operation of the pressing unit and the workpiece conveying operation of the conveying unit based on the control data, and therefore, it is possible to save time wasted for signal processing. It is possible to increase the speed of the press work.

  Preferably, data for generating control data based on at least one of the following information: die information for press processing, press operation information related to the operation of the press unit for press processing, and workpiece transfer information related to workpiece transfer by the transfer unit A generation unit is further provided. It is possible to generate control data according to the press work by the data generation unit.

  Preferably, the apparatus further includes a setting unit for setting the first height and the second height of the press work in accordance with the die information of the press work. The data generation unit generates control data based on the first and second heights set by the setting unit. Since control data is generated based on the first and second heights set by the setting unit, it is possible to generate control data according to the press work.

  Preferably, the first height and the second height are at the same position. By setting the first and second heights to the same position, the number of times of setting by the setting unit can be reduced.

  Preferably, it further includes a setting unit for setting the first height and the second height of the press work in accordance with an operation instruction of the operator. The data generation unit generates the control data based on the first height and the second height set by the setting unit. Since the first and second heights can be set in accordance with an operation instruction from the operator, the height can be easily adjusted.

  Preferably, the setting unit sets the first height and the second height of the press work in accordance with an operation instruction of an operator with respect to a remote control device that can be operated remotely. Since the first and second heights can be set by operating the remote control device, remote setting is possible and adjustment is easy.

  Preferably, a simulation apparatus capable of simulating press working is further provided. The simulation apparatus includes a setting unit that sets a first height and a second height for press working, and a data generation unit. The data generation unit generates the control data based on the first height and the second height set by the setting unit. It is possible to set the first and second heights with the simulation device, and it is possible to generate highly reliable control data based on the results of testing in advance.

  Preferably, the data generation unit uses at least an elevating operation and a conveyance unit from the second height following the end of the press processing to the first height following the top dead center and starting the press processing. Associate workpiece transfer operations at multiple locations. Synchronous control can be executed by associating the lifting and lowering operations with the transport unit at a plurality of locations.

  Preferably, there are three or more places. It is possible to improve the accuracy of synchronous control by associating at three or more locations.

  A control method of a press system according to an aspect includes a step of setting a first height and a second height of press working, and raising and lowering of a slide based on the set first height and the second height. Generating control data in which the operation and the workpiece transfer operation are associated, storing the generated control data, and controlling the press work and the workpiece transfer based on the stored control data Steps.

  According to the present invention, wasteful time for signal processing is saved because the synchronous processing for controlling press working and workpiece conveyance is performed based on the control data in which the lifting and lowering operations of the slide are associated with the workpiece conveying operation. It is possible to increase the speed of press working.

  According to the press system and the control method of the press system of the present invention, signal processing is performed in order to execute the synchronous processing for controlling the press working and the workpiece conveyance based on the control data in which the slide lifting operation and the workpiece conveying operation are associated with each other. Therefore, it is possible to save useless time and to increase the speed of press working.

It is a figure explaining the structure of the press system based on Embodiment 1. FIG. 1 is a perspective view of a press device 10 based on Embodiment 1. FIG. 2 is a side cross-sectional view showing a main part of the press device 10. 3 is a plan view of a partial cross section showing another main part of the press device 10. FIG. It is a figure explaining the outline | summary of the drive system of the press system based on embodiment. It is a figure explaining an example of the control data of the press system based on embodiment. It is a figure explaining the synchronous process based on the control data of the press system based on embodiment. It is a functional block diagram of control device 40 based on an embodiment. It is a figure explaining the relationship between the raising / lowering operation | movement of the slide 20 of the press system based on embodiment, and the conveyance operation of the leveler feeder 200. FIG. It is a flowchart explaining the production | generation of the control data of the press system based on embodiment. It is a figure explaining the case where the setting of feeder conveyance start and feeder conveyance end is linked | related with the data of press motion. It is a conceptual diagram explaining the feeder feeding period Tf. It is a figure explaining the control data produced | generated by the control data production | generation part 56 based on embodiment. It is a figure explaining an example of a convex mold and a concave mold. It is a figure explaining the press system based on the modification 2 of embodiment. It is a functional block diagram of control apparatus 40 # in the simulation apparatus 30 based on the modification 2 of embodiment.

  This embodiment will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

In this example, the press machine will be described by taking a progressive press machine as an example.
<Overall configuration>
FIG. 1 is a diagram illustrating a configuration of a press system based on the first embodiment.

  As shown in FIG. 1, the press system includes an uncoiler 100, a leveler feeder 200, a press device 10, and a transport conveyor 120.

  A coil is wound around the uncoiler 100, and the coil is conveyed to the press device 10 via the leveler feeder 200. In this example, a case where a coil is pressed as a workpiece (material) will be described.

  The leveler feeder 200 adjusts the position of the feed height of the coil conveyed from the uncoiler 100 to the press apparatus 10 and conveys the coil to the press apparatus 10 at a predetermined timing.

  The press device 10 performs press working according to the molding conditions (press motion) selected for the coil conveyed from the leveler feeder 200.

  The conveyance conveyor 120 conveys the workpiece formed by press working in the press device 10. For example, it can be conveyed to the next press machine.

  Each part of the press system is synchronized, and a series of operations are executed sequentially. The coil is conveyed from the uncoiler 100 to the press device 10 via the leveler feeder 200. And it press-processes with the press apparatus 10, and the workpiece | work processed is conveyed by the conveyance conveyor 120. FIG. The above series of processing is repeated.

  In addition, the structure of the said press system is an example, and is not restricted to the said structure in particular.

  The leveler feeder (conveying unit) 200 operates in accordance with instructions from the press machine (pressing unit) 10. In this regard, a control device that controls the leveler feeder 200 is provided in the press device 10. In this example, the configuration in which the control device for controlling the leveler feeder 200 is provided in the press device 10 will be described. However, the present invention is not limited to this. For example, the control device for controlling the press device 10 is provided on the leveler feeder 200 side. It may be done. In the embodiment, a case where one control device controls both the leveler feeder 200 and the press device 10 will be described.

<Press machine>
FIG. 2 is a perspective view of the press device 10 according to the first embodiment.

  As shown in FIG. 2, a progressive press machine without a plunger is shown as an example.

  The press device 10 includes a main body frame 2, a slide 20, a bed 4, a bolster 5, a control panel 6, and a control device 40.

  A slide 20 is supported in a substantially central portion of the main body frame 2 of the press device 10 so as to be movable up and down. A bolster 5 attached on the bed 4 is disposed below the slide 20. A control panel 6 is provided in front of the main body frame 2. A control device 40 to which a control panel 6 is connected is provided on the side of the main body frame 2.

  An upper mold in the mold is detachably attached to the lower surface of the slide 20. On the upper surface of the bolster 5, a lower mold in a mold for processing a workpiece is detachably mounted. In this way, a predetermined workpiece corresponding to the future mold is positioned on the lower mold, and the upper mold is lowered together with the slide 20 to perform press working.

  In addition, a remote control (remote control device) 70 that can be remotely operated from the outside and is provided so as to be communicable with the main body of the press device 10 is provided. An operator (driver) can perform various setting operations by operating the remote controller 70. The remote controller 70 can communicate with the control device 40 and operate the press device 10 in accordance with instructions from the remote controller 70.

  In this example, the remote controller 70 is provided with an upper button 72 and a lower button 74 that can move the slide up and down, and an enter button 76.

The remote controller 70 can be used during a teaching operation described later.
The control panel 6 is used to input various data necessary for controlling the press device 10 and includes a switch and a numeric keypad for inputting data, and a display for displaying data output from the setting screen and the press device 10. Has a vessel.

  As the display, a programmable display having a transparent touch switch panel and a graphic display such as a liquid crystal display or a plasma display mounted on the front surface is employed.

  The control panel 6 may include a data input device from an external storage medium such as an IC card that stores preset data, or a communication device that transmits and receives data via a wireless or communication line.

  In this example, the configuration in which the control panel 6 and the remote controller 70 are provided to the press device 10 will be described. However, the configuration of the press machine is an example, and for example, a configuration in which only one of them is provided is also possible. However, it is not particularly limited to the configuration.

FIG. 3 is a side cross-sectional view showing a main part of the press apparatus 10.
FIG. 4 is a partial cross-sectional plan view showing another main part of the press apparatus 10.

  As shown in FIG. 3, the press device 10 is a servo press. The press device 10 includes a servo motor 121, a spherical hole 33A, a screw shaft 37, a spherical body portion 37A, a screw portion 37B, and a connecting rod main body 38. Further, the press device 10 includes a female screw portion 38A, a connecting rod 39, a main shaft 110, an eccentric portion 110A, a side frame 111, bearing portions 112 to 114, a main gear 115, a power transmission shaft 116, and a transmission. It further has a gear 116A, bearings 117 and 118, and a pulley 119.

  In the press device 10, the slide 20 is driven by a servo motor 121. A spherical portion 37A provided at the lower end of the screw shaft 37 for adjusting the die height is rotatably inserted into the spherical hole 33A formed in the upper portion of the slide 20 in a state where the spherical portion 37A is prevented from coming off. The spherical hole 33A and the spherical body portion 37A constitute a spherical joint. The screw portion 37B of the screw shaft 37 is exposed upward from the slide 20 and is screwed into a female screw portion 38A of the connecting rod body 38 provided above the screw shaft 37. The screw shaft 37 and the connecting rod main body 38 constitute a connecting rod 39 that can be expanded and contracted.

  The die height refers to the distance from the bottom surface of the slide to the top surface of the bolster when the slide 20 is at the bottom dead center.

  The upper portion of the connecting rod 39 is rotatably connected to a crank-shaped eccentric portion 110 </ b> A provided on the main shaft 110. The main shaft 110 is supported by three front and rear bearing portions 112, 113, and 114 between a pair of left and right thick plate-like side frames 111 constituting the main body frame 2. A main gear 115 is attached to the rear side of the main shaft 110.

  The main gear 115 meshes with a transmission gear 116A of a power transmission shaft 116 provided below the main gear 115. The power transmission shaft 116 is supported between the side frames 111 by two front and rear bearing portions 117 and 118. A driven pulley 119 is attached to the rear end of the power transmission shaft 116. The pulley 119 is driven by a servo motor 121 disposed below the pulley 119.

  The pressing device 10 includes a bracket 122, an output shaft 121A, a pulley 123, a belt 124, a bracket 125, a position detector 126, a rod 127, a position sensor 128, an auxiliary frame 129, and bolts 131 and 132. And further.

  The servo motor 121 is supported between the side frames 111 via a substantially L-shaped bracket 122. The output shaft 121A of the servo motor 121 protrudes along the front-rear direction of the press device 10, and power is supplied by a belt 124 wound around a driving pulley 123 and a driven pulley 119 provided on the output shaft 121A. Communicated.

  In addition, a pair of brackets 125 are attached to the back side of the slide 20 so as to protrude rearward from the two upper and lower portions toward the side frame 111. A rod 127 that constitutes a position detector 126 such as a linear scale is attached between the upper and lower brackets 125. The rod 127 is provided with a scale for detecting the vertical position of the slide 20, and is inserted into a position sensor 128 that also constitutes the position detector 126 so as to be movable up and down. The position sensor 128 is fixed to an auxiliary frame 129 provided on one side frame 111.

  The auxiliary frame 129 is formed vertically long in the vertical direction, the lower part is attached to the side frame 111 by bolts 131, and the upper part is slidable in the vertical direction by bolts 132 inserted into long holes that are long in the vertical direction. It is supported. As described above, the auxiliary frame 129 is fixed to the side frame 111 only on one of the upper and lower sides (lower side in the present embodiment) and supported on the other side so as to be movable up and down. Is not affected by. Thus, the position sensor 128 can accurately detect the slide position and the die height position without being affected by such expansion and contraction of the side frame 111.

  On the other hand, the slide position and die height of the slide 20 are adjusted by a slide position adjusting mechanism 133 provided in the slide 20. As shown in FIG. 4, the slide position adjusting mechanism 133 includes a worm wheel 134 attached to the outer periphery of the spherical portion 37A of the screw shaft 37 via a pin 37C, a worm gear 135 that meshes with the worm wheel 134, and a worm gear 135. And an induction motor 138 having an output gear 137 meshing with the input gear 136. The induction motor 138 has a flat shape with a short axial length and is compact. The rotational movement of the induction motor 138 is adjusted by rotating the screw shaft 37 via the worm wheel 134.

<Configuration of press system drive system>
FIG. 5 is a diagram illustrating an outline of a drive system of the press system based on the embodiment.

  In FIG. 5, the leveler feeder 200 includes a conveyance roller 63, a servo motor 62, an encoder 64, and a servo amplifier 60.

  The press device 10 includes a control device 40, a servo amplifier 66, a servo motor 121, an encoder 65, a main gear 115, a main shaft 110, an eccentric portion 110A, a slide 20, an upper mold 22A, a lower A mold 22B.

  The control device 40 includes a CPU (Central Processing Unit) 42, a memory 44, and a communication circuit 46.

The communication circuit 46 is provided so as to be able to communicate with the remote controller 70.
The CPU 42 outputs a target value to the servo amplifier 60. The servo amplifier 60 gives a speed instruction to the servo motor 62 based on the target value. The conveyance roller 63 performs the conveyance operation of the workpiece W according to the drive of the servo motor 62.

  The encoder 64 outputs a feedback signal corresponding to the rotation speed of the servo motor 62 according to the speed instruction to the servo amplifier 60.

  The servo amplifier 60 adjusts the rotation speed of the servo motor 62 to a value according to the target value by controlling the power supply to the servo motor 62 based on the feedback signal from the encoder 64.

With this processing, the CPU 42 controls the conveyance speed in the operation of conveying the workpiece W.
Similarly, the CPU 42 outputs a target value to the servo amplifier 66. The servo amplifier 66 gives a speed instruction to the servo motor 121 based on the target value. The main gear 115 drives the main shaft 110 according to the drive of the servo motor 121. The eccentric portion 110A rotates as the main shaft 110 is driven. The eccentric portion 110A is connected to the slide 20, and the slide 20 to which the upper mold 22A is attached moves up and down in accordance with the rotation operation of the eccentric portion 110A. When the slide 20 is lowered to the bottom dead center position, pressing is performed on the workpiece W conveyed between the upper mold 22A and the lower mold 22B.

  The encoder 65 outputs a feedback signal corresponding to the rotation speed of the servo motor 121 according to the speed instruction to the servo amplifier 66.

  The servo amplifier 66 adjusts the rotation speed of the servo motor 121 to a value according to the target value by controlling the power supply to the servo motor 121 based on the feedback signal from the encoder 65.

By this processing, the CPU 42 controls the speed in the raising / lowering operation of the slide 20.
Based on the control data stored in the memory 44, the CPU 42 based on the embodiment executes processing that synchronizes the conveying operation by the leveler feeder 200 (also simply referred to as a feeder) and the raising / lowering operation of the slide 20 of the press apparatus 10.

  Specifically, the memory 44 stores control data in which the lifting / lowering operation of the slide 20 and the workpiece transfer operation by the leveler feeder 200 are associated with each other.

Drawing 6 is a figure explaining an example of control data of a press system based on an embodiment.
As shown in FIG. 6, here, as an example, a case where the speed is set by dividing at a plurality of points as a one-stroke press motion is shown.

  Specifically, a case is shown in which a plurality of points are divided into 10 points as an example, and motion control is performed by setting a press speed (slide speed) for each press position (slide position). As an example, the press position corresponds to the rotation angle (0 to 360 °) of the eccentric portion 110A.

  As an example, the case where it is divided into a plurality of press positions P1 to P10 is shown, and the case where the press speeds V1 to V10 are set corresponding to the press positions P1 to P10, respectively.

  Further, a case where a feeder synchronization command is registered for a predetermined press position is shown. As the feeder synchronization command, a case where a feeder conveyance start command PfS and a feeder conveyance end command PfE are associated and registered is shown.

  Then, a case is shown in which the feeder feed positions Q1 to Q7 starting from the feeder conveyance start command PfS and the feeder conveyance end command PfE and the feeder speeds Vf1 to Vf7 at the respective positions are registered in association with each other. Yes.

The feeder transport start command PfS is a command for instructing the start of the feeder transport operation.
The feeder transport end command PfE is a command for instructing the end of the feeder transport operation.

  In this example, as an example, a feeder conveyance start command PfS (feeder feed position Q3) is set in association with the press position P7, and as an example, a feeder feed end command PfE (feeder feed position) is set in correspondence with the press position P3. A case where Q7) is set in association with each other is shown.

  The press position P3 and the press position P7 are positions (heights) that do not interfere with the feeding operation of the feeder.

  The CPU 42 calculates a target value for the servo amplifier 60 based on the feeder speed (Vf1 to Vf7) (workpiece conveyance information) corresponding to the feeder feed positions (Q1 to Q7) included in the control data as the feeder conveyance operation. Output. Specifically, the CPU 42 calculates and outputs a target value for starting the transport operation at the feeder speed Vf1 corresponding to the feeder feed position Q1 at the press position P7, and feeds the feeder speed corresponding to the feeder feed position Q7 at the press position P3. A target value for completing the transport operation by Vf7 is calculated and output.

  The CPU 42 calculates and outputs a target value to the servo amplifier 66 based on the press position and the press speed (press operation information) included in the control data as the raising / lowering operation of the slide 20. Specifically, the CPU 42 calculates and outputs a target value so that the press speed set at each press position is obtained.

  FIG. 7 is a diagram illustrating a synchronization process based on control data of the press system based on the embodiment.

  In the upper diagram of FIG. 7, the slide position according to the press motion in the continuous stroke in the press device 10 is shown.

  In this example, as a one-stroke press motion, as an example, a case where the slide position and speed are set at 10 points is shown.

  In the lower diagram of FIG. 7, the conveyance feed amount of the workpiece W by the leveler feeder 200, its conveyance start and conveyance completion timing are shown.

  Specifically, the case where the feeder feed position Q1 corresponds to the press position P7 and the feeder feed position Q7 corresponds to the press position P3 is shown.

  After the feeder transport operation is completed at the press position P3, the slide 20 performs press processing on the workpiece (material) according to the transition period (press processing period) of the press positions P3 → P4 → P5 → P6 → P7.

  Then, the feeder transport operation is started at the press position P7. The feeder carries the workpiece (material) at the feeder feed positions Q1-> Q2-> Q3-> Q4-> Q5-> Q6-> Q7 according to the transition period (feeder transfer period) of the press positions P7-> P8-> P9-> P10-> P1-> P2-> P3. Run. Feeder feed positions Q1 to Q7 are associated with each other at a plurality of locations (three or more locations) from the press position P7 following the end of press processing to the press position P3 following the top dead center and following the start of press processing.

  As shown in this example, the control device 40 executes a synchronization process between the lifting / lowering operation of the slide 20 and the conveying operation of the leveler feeder 200 based on the control data.

  With this processing, it is not necessary to independently control the leveler feeder 200 using a cam signal, and specifically, it is not necessary to design with a margin for signal processing. Therefore, it is possible to save useless time, and it is possible to speed up the press processing of the press device.

<Design method>
Next, a control data design method based on the embodiment will be described.

FIG. 8 is a functional block diagram of the control device 40 based on the embodiment.
As shown in FIG. 8, the control device 40 includes a teaching setting reception unit 52, a press motion editing unit 54, a control data generation unit 56, and an execution unit 58.

  Each of the functional block diagrams is realized in cooperation with each unit (communication circuit or the like) by the CPU 42 executing a predetermined application program stored in the memory 44.

  The teaching setting accepting unit 52 accepts the setting of the start and end timing of the workpiece W transfer operation of the leveler feeder 200. In this example, operation instructions for the feeder feedable position and the feeder feed limit position of the slide 20 are received via the remote controller 70.

  The press motion editing unit 54 executes a pre-defined press motion data editing process. It is assumed that the press motion data is stored in the memory 44 in advance. In this example, one piece of press motion data is described. However, a plurality of pieces of press motion data may be stored in the memory 44 according to the press work, and one of them is selected. And

  The control data generating unit 56 generates control data in which the press motion data edited by the press motion editing unit 54 is associated with the data related to the conveyance of the workpiece W.

  The execution unit 58 controls the transport operation of the leveler feeder 200 and the press work of the press device 10 based on the control data generated by the control data generation unit 56. Specifically, the execution unit 58 outputs target values for driving the servo motors 62 and 121 to the servo amplifiers 60 and 66 based on the control data, and performs a synchronization process in which the press motion and the transport operation are synchronized. Run.

  FIG. 9 is a diagram illustrating the relationship between the lifting / lowering operation of the slide 20 and the conveying operation of the leveler feeder 200 in the press system according to the embodiment.

  FIG. 9A shows a state before the lifting / lowering operation of the slide 20 of the press system and the conveying operation of the leveler feeder 200 are synchronized.

  For the press motion of the slide 20, a feeder feedable position and a feeder feed limit position are shown.

  The feeder feedable position is a slide position where the workpiece transfer operation and the slide 20 do not interfere with each other. When the slide 20 rises from the slide position, the work W indicates a position where the work W can be conveyed to the press device 10 without interfering with the slide 20.

  The feeder feed limit position is a slide position where the workpiece transfer operation and the slide 20 do not interfere with each other. A position that does not affect the workpiece transfer operation even if the slide 20 is lowered until the slide position is reached is indicated. Therefore, it is necessary to complete the workpiece transfer operation before reaching the slide position, and the limit position is indicated.

  In this example, for example, the operator operates the remote controller 70 to set a feeder feedable position (second height for press processing) and a feeder feed limit position (first height for press processing) by teaching operation. Set.

  Specifically, in a predetermined mode for executing the teaching operation, the position of the slide 20 that does not interfere with the press work is set while observing the conveying operation of the workpiece W by the leveler feeder 200.

  For example, a mode in which a feeder feedable position is set by a button (not shown) of the remote controller 70 is set, and the upper button 72 and the lower button 74 of the remote controller 70 are operated to adjust the slide 20 to a height position that does not interfere with the press work. By operating (selecting) the decision button 76 at the adjusted height position, the feeder feedable position is set.

  Also, a mode for setting the feeder feed limit position is set by a button (not shown) of the remote controller 70, and the upper button 72 and the lower button 74 of the remote controller 70 are operated to adjust the slide 20 to a height position that does not interfere with the press work. Then, the feeder feed limit position is set by operating (selecting) the decision button 76 at the adjusted height position.

  With this teaching operation, it is possible to set the feeder feedable position and the feeder feed limit position by the teaching operation via the remote controller 70.

  In this example, the case where the transport operation of the work W of the leveler feeder 200 is completed while the slide 20 moves up and down from the feeder feedable position to the feeder feed limit position is shown. Therefore, in this case, the case where the raising / lowering operation of the slide 20 and the feeding operation of the feeder do not interfere with each other is shown.

  On the other hand, as described above, due to signal processing and the like, the design is such that a certain margin is provided so that the lifting / lowering operation of the slide 20 and the conveying operation of the leveler feeder 200 do not interfere with each other.

  Therefore, as shown in FIG. 9B, it is possible to perform high-speed pressing by setting the margin to 0 and synchronizing the feeder feedable position and feeder feed limit position with the feeder transport operation. is there.

  In this example, a method for setting the feeder feedable position and the feeder feed limit position via the remote controller 70 by teaching operation will be described. However, information on the workpiece W (material thickness, etc.), the upper mold 22A, It is also possible to set each position based on information (the height of the mold, etc.) regarding the lower mold 22B.

  FIG. 10 is a flowchart illustrating generation of control data of the press system based on the embodiment.

  As shown in FIG. 10, the control device 40 accepts the setting of the feeder feedable position (step S <b> 1). Specifically, the teaching setting receiving unit 52 receives an operation instruction for designating a feeder feedable position of the slide 20 via the remote controller 70.

  Next, the control apparatus 40 receives the setting of the feeder feed limit position (step S2). Specifically, the teaching setting receiving unit 52 receives an operation instruction for specifying the feeder feed limit position of the slide 20 via the remote controller 70.

  Next, the control device 40 sets a feeder transport start and a feeder transport end based on the accepted feeder feedable position and feeder feed limit position (step S4). Specifically, the press motion editing unit 54 associates the settings of the feeder conveyance start and the feeder conveyance end with predetermined press motion data.

  FIG. 11 is a diagram for explaining a case where settings of feeder conveyance start and feeder conveyance end are associated with press motion data.

  As shown in FIG. 11, a plurality of press positions P1 to P10 are provided as an example, and press speeds Vd1 to Vd10 (generally referred to as Vd) are set corresponding to the respective press positions P1 to P10. The case has been shown.

  The case where the press position P7 is associated as the accepted feeder conveyance start position and the press position P3 is associated as the feeder conveyance end position is shown.

  As an example, a case where a feeder conveyance start command PfS is set corresponding to the press position P7 and a feeder conveyance end command PfE is set corresponding to the press position P3 is shown.

  Referring to FIG. 10 again, next, control device 40 calculates a feeder feed period (step S5). Specifically, the press motion editing unit 54 calculates a feeder feed time Tf for the feeder feed length Sf (feeder feed positions Q1 to Q7) based on the feed speed information of the feeder. It is assumed that the feeder maximum speed vfmax, acceleration time tfa, and deceleration time tfd are defined in advance as feeder conveyance speed information (work conveyance information). The value is calculated based on the standard value of the servo motor 62 as an example.

FIG. 12 is a conceptual diagram illustrating the feeder feed period Tf.
As shown in FIG. 12, the feeder feed length Sf (feeder feed positions Q1 to Q7) can be expressed as tfa × Vfmax × 1/2 + (Tf−tfa−tfb) × Vfmax + tfd × Vfmax × 1/2. .

  Therefore, the feeder feed period Tf is calculated according to the formula based on the feeder feed length Sf (feeder feed positions Q1 to Q7) and the feed speed information of the feeder.

  And in this example, the feeder conveyance period T is shown as a transition period of press position P7-P3.

  The feeder transport period T is calculated based on the press speeds V7 to V3 corresponding to the press positions P7 to P3 according to the press motion, respectively.

  In this example, the case where the feeder conveyance period T is longer than the feeder feeding period Tf is shown.

  Therefore, the margin of the period T-Tf can be shortened by adjusting the feeder transport period T to a press motion that matches the feeder feed period Tf.

  Further, the slide positions P7 to P3 and the feeder feed positions Q1 to Q7 can be synchronized.

  Referring to FIG. 10 again, next, control device 40 edits the slide motion in accordance with the calculated feeder feed period (step S6).

  Specifically, the feeder conveyance period and the feeder feeding period can be matched by adjusting the speed of the press motion during the feeder conveyance period. In this example, the press speed Vd during the feeder transport period of the press motion is multiplied by a coefficient K (T / Tf).

  And the control apparatus 40 produces | generates control data based on an edit result (step S7).

  Specifically, the control data generation unit 56 generates control data based on the editing result of the press motion editing unit 54.

Then, the process ends (END).
The control data generation unit 56 stores the generated control data in the memory 44.

  Then, the execution unit 58 executes press working in which the press motion and the transport operation are synchronized based on the control data stored (stored) in the memory 44.

  FIG. 13 is a diagram for explaining the control data generated by the control data generation unit 56 based on the embodiment.

  As shown in FIG. 13, a plurality of press positions P1 to P10 are provided as an example, and press speeds Vd1 to Vd10 are set corresponding to the respective press positions P1 to P10. Further, based on the editing process of the press motion editing unit 54, the feeder conveyance start and the feeder conveyance end are set in association with each other. Then, based on the transport speed information of the feeder, the feeder feed positions Q1 to Q7 starting from the feeder transport start command PfS and the feeder transport end command PfE, respectively, and the feeder speeds Vf1 to Vf7 at the respective positions are associated and registered. The case has been shown.

  Specifically, as an example, a case where a feeder conveyance start command PfS is set corresponding to the press position P3 and a feeder conveyance end command PfE is set corresponding to the press position P7 is shown.

  And the press position P7 is linked | related as the received feeder conveyance start position (feeder feed position Q1), and the case where the press position P3 is linked | related as a feeder conveyance end position (feeder feed position Q7) is shown.

  Furthermore, the case where the coefficient K is multiplied and set to the press speed Vd of the press motion during a feeder conveyance period is shown.

  Based on the control data generated by the control data generation unit 56, the execution unit 58 of the control device 40 outputs target values for driving the servo motors 62 and 121 to the servo amplifiers 60 and 66, respectively, as shown in FIG. It becomes possible to execute a synchronization process in which the edited press motion and the transport operation are synchronized as shown in B).

  By setting the feeder transport period to a press motion that matches the feeder feed period, it is possible to reduce the margin for the period T-Tf.

  In this example, the case where the feeder transport period T is longer than the feeder feed period Tf has been described as an example. However, the feeder transport period T may be shorter than the feeder feed period Tf. In this case, the slide 20 may interfere with the workpiece W.

  Therefore, it is possible to match the feeder transport period and the feeder feed period by adjusting the speed of the press motion during the feeder transport period. In this example, the press speed Vd during the feeder transport period of the press motion is multiplied by a coefficient K (T / Tf).

  By setting the feeder transport period to a press motion that matches the feeder feed period, the feeder feed positions Q1 to Q7 and the slide positions P7 to P3 can be synchronized. As a result, it is possible to execute a synchronization process in which the press motion and the conveying operation are synchronized while suppressing interference between the workpiece W and the slide 20.

(Modification 1)
In the above-described embodiment, the teaching setting reception unit 52 has been described with respect to the case where the operation instruction is received via the remote controller 70 for the feeder feedable position and the feeder feed limit position.

FIG. 14 is a diagram illustrating an example of a convex mold and a concave mold.
As shown in FIG. 14, here, a case where a convex upper mold 22 </ b> A and a concave lower mold 22 </ b> B are provided and pressed against the workpiece W is shown.

  In this case, the feeder feedable position needs to be set to a height position that does not interfere with the upper mold 22A coupled to the slide 20 when a knockout operation for pushing the workpiece W upward from the lower mold 22B is executed.

  On the other hand, the feeder feed limit position can be set to a height that does not interfere with the upper workpiece 22A.

  Accordingly, the description has been given of the case where the feeder feedable position and the feeder feed limit position need to be set because the heights of the workpiece W before and after the press work are different.

  On the other hand, when the height information of the upper mold 22A and the lower mold 22B is known, the feeder feedable position can be calculated from the feeder feed limit position based on the information. Specifically, the height of the workpiece W changes by the height of the shape of the convex portion of the upper mold 22A. Therefore, the feeder feedable position can be calculated by adding the height of the shape of the convex portion of the upper mold 22A from the feeder feed limit position.

  Therefore, teaching for setting only one of the height of the feeder feedable position and the feeder feed limit position may be executed. In this example, the case where the feeder feedable position is calculated from the feeder feed limit position has been described, but the feeder feed limit position may be calculated from the feeder feedable position on the contrary.

  In the above description, the case where the height of the workpiece W is changed by press working has been described. However, when the height position of the workpiece W does not change before and after press working, the workpiece W and the slide 20 are The feeder feedable position and the feeder feed limit position that do not interfere can be set to the same position.

  Therefore, teaching for setting only one of the height of the feeder feedable position and the feeder feed limit position may be executed.

(Modification 2)
In the above embodiment, the case where the control data is generated in the control device 40 of the press apparatus 10 has been described. However, the present invention is not limited to this, and the control data can also be generated by another simulation device.

FIG. 15 is a diagram illustrating a press system based on the second modification of the embodiment.
Referring to FIG. 15, here, a case where a simulation device 30 is provided in addition to the press device 10 is shown.

  The simulation device 30 has information on the press system, and is a device that simulates the press processing of the press device 10 and the conveying operation of the leveler feeder 200 without operating an actual machine.

  In the simulation apparatus 30, it is also possible to specify a feeder feedable position and a feeder feed limit position by input according to the design method described above, and to generate control data according to a similar method.

  FIG. 16 is a functional block diagram of the control device 40 # in the simulation device 30 based on the second modification of the embodiment.

  As shown in FIG. 16, control device 40 # includes a teaching setting receiving unit 52 #, a press motion editing unit 54 #, a control data generating unit 56 #, and a simulation executing unit 58 #.

  Each of the functional block diagrams of control device 40 # is realized by a CPU (not shown) executing a predetermined application program stored in a memory (not shown) in the simulation apparatus.

  Teaching setting accepting unit 52 # accepts the setting of the start and end timings of the transport operation of workpiece W of the leveler feeder on the simulation. In this example, operation instructions for the feeder feedable position and feeder feed limit position of the slide are received via an input unit (not shown).

  The press motion editing unit 54 # executes editing processing of press motion data defined in advance.

  The control data generation unit 56 # generates control data in which the press motion data edited by the press motion editing unit 54 # and the data related to the conveyance of the workpiece W are associated with each other.

  The simulation execution unit 58 # executes simulation control of the conveying operation of the leveler feeder and the press processing of the press device on the basis of the control data generated by the control data generation unit 56 #.

  When it is determined that the simulation is successful (no problem) as a result of the simulation control, the control data generated by the control data generation unit 56 # determined to be successful is stored in the memory 44 of the press device 10. A similar operation can be executed in the actual machine.

  In the above description, the case where it can be applied to a progressive-type press machine has been described. However, the present invention can be applied to a transfer-type press machine as well, and is not limited to this. can do.

  In the present example, the configuration provided in the press machine as the functional configuration of each unit of the control device 40 has been described. However, the present invention is not limited to the press machine, and a press system including the press machine may be used. is there. For example, when connected to an external server via a network, the function of each unit can be executed in cooperation with the CPU of the external server. Moreover, it is not limited to the structure displayed on the display part of a press machine, It is also possible to display on the display part of the terminal connectable with a press machine via a network.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  2 Body frame, 4 beds, 5 bolsters, 6 Control panel, 10 Press device, 20 Slide, 22A Upper die, 22B Lower die, 30 Simulation device, 40 Control device, 44 Memory, 46 Communication circuit, 52 Teaching setting acceptance Unit, 54 press motion editing unit, 56 control data generation unit, 58 execution unit, 58 # simulation execution unit, 60, 66 servo amplifier, 62, 121 servo motor, 63 transport roller, 64, 65 encoder, 70 remote control, 100 coil Holder, 110 main shaft, 110A outlet, 115 main gear, 200 leveler feeder.

Claims (10)

A transport section for transporting workpieces;
A press unit that performs press processing by a lifting and lowering operation of a slide with respect to the workpiece conveyed by the conveyance unit;
A storage unit that stores control data in which the lifting and lowering operation of the slide and the transfer operation of the workpiece by the transfer unit are associated;
A press system comprising: a control unit that controls the press unit and the transport unit based on the control data.   The control data is based on at least one of the die information of the press working, the press operation information related to the operation of the press part of the press working, and the work transfer information related to the transfer of the work by the transfer unit. The press system of Claim 1 further provided with the data generation part to produce | generate. A setting unit for setting the first height and the second height of the press work according to the die information of the press work;
The press system according to claim 2, wherein the data generation unit generates the control data based on the first height and the second height set by the setting unit.   The press system according to claim 3, wherein the first height and the second height are at the same position. A setting unit for setting the first height and the second height of the press work in accordance with an operation instruction of the operator;
The press system according to claim 2, wherein the data generation unit generates the control data based on the first height and the second height set by the setting unit.   The press system according to claim 5, wherein the setting unit sets the first height and the second height of the press work according to an operation instruction of an operator with respect to a remote control device that can be operated remotely. Further equipped with a simulation device capable of simulating press working,
The simulation apparatus includes:
A setting unit for setting the first height and the second height of the press work;
Including the data generation unit,
The press system according to claim 2, wherein the data generation unit generates the control data based on the first height and the second height set by the setting unit.   The data generating unit moves up and down at least from the second height following the end of the press processing to the first height following the top dead center and starting the press processing, and transporting the workpiece by the transport unit The press system according to any one of claims 3 to 7, wherein the operation is associated with a plurality of locations.   The press system according to claim 8, wherein the plurality of places are three or more places. Setting a first height and a second height of press working;
Generating control data in which a lifting / lowering operation of a slide and a conveying operation of a workpiece are associated with each other based on the set first height and the second height;
Storing the generated control data;
And a step of controlling the pressing and the conveyance of the workpiece based on the stored control data.

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