JP2002336999A - Press machine and its controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the simplification of a machine structure, improvement in the reliability of a machine, an operation by small torque, a plurality of operations, flexibility of control and low power consumption in a press machine which reciprocates a large number of molds at the same time, moves a work successively in each mold and completes molding with a progressive press by the predetermined number of molds. SOLUTION: A driving mechanism to drive each mold of a mold group reciprocated independently and a controller to control the driving mechanism, are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press machine (hereinafter referred to as a necking machine) for gradually forming, for example, an aluminum can or the like having a complicated shape by using a large number of molds arranged in a loop. Related to the control device.

[0002]

2. Description of the Related Art FIG. 14 shows the structure of a conventional machine of a necking machine, in which (a) is a schematic structural diagram of the machine, and (b).
FIG. 2 is a front view of a plate used for this machine, on which a press die is mounted. As shown in FIG. 14 (a), this press machine has a large number of dies (for example, male dies) mounted thereon, and a reciprocating plate that performs a reciprocating pressing operation in a horizontal direction, as well as a large number of dies (for example, female dies). Is mounted, a rotating plate for moving the mold in the circumferential direction for each pressing operation, a reciprocating shaft driving mechanism for reciprocating the reciprocating shaft column using, for example, a crank mechanism, and a rotating plate for each reciprocating plate reciprocating. It is composed of a rotating shaft drive mechanism that uses a speed reduction mechanism such as a worm gear to rotate by a predetermined angle.

FIG. 14B shows a plate on which twelve dies are mounted for the sake of simplicity. For example, twelve dies including a material supply position and a work discharge position are sequentially used. Pressing is performed, and when the plate makes one round, a work having a desired shape is formed. Therefore, when the rotary plate is rotated by 30 degrees (= 360/12) each time the reciprocating plate performs a pressing operation once, the molds are sequentially shifted, and the deformation is gradually advanced. Therefore, the material (cup-shaped material obtained by molding pellets by another machine)
Is supplied to the designated position, and the plate
After the rotation, a workpiece having a finished shape as shown in FIG. 15 appears at the discharge position.

[0004]

As described above, in the prior art, each of a large number of dies, which are installed facing each other in the horizontal direction, is formed into a male mold and a female mold with a predetermined protrusion amount on the circumference. By reciprocating one of the two plates arranged separately, the two plates are relatively moved toward and away from each other, and the other plate is rotated and shifted by one mold together with the work for each reciprocation. Pressing of one work had been completed. In this, the amount of horizontal movement of the plate is set according to the longest moving mold in the group of molds, and the driving torque is the torque required for each mold of the group of molds. The torque must be greater than the sum. In addition, because of the above-described mechanical configuration, the plate becomes heavy and the holding structure becomes huge, the bearing wear is severe, and a heavy-duty object is reciprocated at high speed, so the mold driving motor becomes large, and the machine becomes large. , High power consumption,
Since the stroke is determined mechanically,
There are problems that adjustment is troublesome, free operation of each mold alone, and correction control cannot be performed. In addition, the drive mechanism of the plate that is driven to rotate is large with a motor and a gear box for reduction,
It is necessary to stop for a certain period of time at each rotation of the step angle. Further, there is a problem that each part is large even in the whole machine, and the space efficiency at the time of installation is poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can realize the miniaturization of a machine, the improvement of reliability, the easiness of adjustment, and the saving of power, and the freedom of mold control. The purpose is to obtain a good press machine.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and comprises a rotating plate for mounting a first mold group and rotating the first mold group by a predetermined angle. A plate mounted with a second mold group that reciprocates toward the rotating plate, a press machine that molds a workpiece from a material using the first mold group and the second mold group. A drive mechanism for independently driving each mold of the second mold group, and a control device for controlling the drive mechanism.

The present invention also provides a rotating plate for mounting a first mold group and rotating the first mold group by a predetermined angle, and a second mold group reciprocating toward the rotating plate. With a mounted plate, in a press machine for molding a workpiece from a material using the first mold group and the second mold group, a plurality of adjacent dies of the second mold group, It is provided with a drive mechanism that is divided into blocks and drives each of the blocks independently, and a control device that controls the drive mechanism.

Further, in the present invention, the control device controls the driving of the driving mechanisms independently of each other.

Further, the present invention is such that a rotary plate on which the first mold group is mounted is rotationally driven by a servo motor directly connected thereto.

[0010] The present invention also provides a rotating mold for mounting a first mold group and rotating the first mold group by a predetermined angle, and a second mold group reciprocating toward the rotating plate. In a control device of a press machine for forming a work from a material using the first mold group and the second mold group, comprising a mounted plate, and each mold of the second mold group Or a drive mechanism for independently driving a block composed of a plurality of adjacent dies and a control device for controlling the drive mechanism, and the control device has a command for an axis corresponding to each of the dies or each block. A processing data input screen for inputting at least one of a position, a command speed, an auxiliary operation command, and a stop time is provided, and a reciprocating operation is controlled based on the input data.

The present invention also provides a step angle, a rotation speed, and an auxiliary operation to be performed before and / or after rotation of a rotating plate for mounting the first mold group and rotating the first mold group by a predetermined angle. It has a machining data input screen for inputting at least one of a command and a rotation stop time, and is provided with a rotating plate control device for controlling a rotating operation based on the input data.

Further, according to the present invention, the control device for the second mold group independently drives and controls the driving mechanisms, and the control device for the second mold group includes a material at the start of machining. It is provided with a gradual increase control means for sequentially increasing the number of driven shafts from the mold at the loading position.

Still further, according to the present invention, the control device for the second mold group independently controls the driving of the drive mechanisms, and the control device for the second mold group includes a control device at the end of machining. It is provided with a gradual decrease control means for decreasing the number of shafts to be driven sequentially from the mold at the material loading position.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG.
(A) shows the schematic side structure of the necking machine according to Embodiment 1 of the present invention in the same form as that of the conventional structure for easy understanding. FIG. 1B shows a rotary plate on which a mold is similarly mounted. In FIG. 1, 1 is a rotary plate, 2 is a female mold, 3 is a rotary drive servomotor, 4 is a reciprocating shaft plate, 5 is a male mold, and 6 is a reciprocating shaft column.

A plurality of female dies 2 are mounted on the rotating plate 1, and the rotating plate rotates by a pitch angle corresponding to one mold every one press operation, and stands still for the next press operation. After one press, when the rotating plate 1 and the reciprocating shaft plate 4 are separated to such an extent that there is no interference between the dies, the rotating plate rotates again by the pitch angle of one dies, stands still, and performs the pressing operation again. repeat. Reference numeral 3 denotes a rotary drive servomotor for rotating the rotary plate 1, which directly drives the rotary plate 1 without having a conventional reduction mechanism such as a worm gear. The drive amplifier of the rotary drive servomotor 3 is mounted in a vacant space in the control device or the machine body, but is not shown in the figure.

The reciprocating shaft plate 4 includes the rotary plate 1
The male mold 5 is mounted on a block at a position corresponding to the die position mounted on the reciprocating shaft plate 4. Each block is configured to be able to reciprocate in a horizontal direction on a reciprocating shaft plate 4 by a linear motor constituting a driving mechanism. ing. Unlike the conventional machine, the reciprocating shaft column 6 only supports the reciprocating shaft plate 4 without reciprocating operation. Therefore, the reciprocating shaft column 6 does not need to be at the center of the reciprocating shaft plate 4, and the reciprocating shaft plate 4 and the rotating plate 1 may be separately fixed on the machine base as shown in FIG. The drive amplifier of the linear motor group incorporated in the reciprocating shaft plate 4 is mounted in a vacant space in the control device or the machine body, but is not shown in the drawing.

The mold incorporated in the reciprocating shaft plate 4 divides the process in order to perform deep drawing and partially deforms the material, and by repeating these, the deformation grows to a desired level. It is arranged to be molded into a shape. Each mold is manufactured so as to be suitable for such partial processing, and in some cases, it is preferable to perform a plurality of types of positions, speeds, or operations of the mold during one reciprocation.

Next, an example of a control device for a necking machine according to the present invention will be described with reference to FIGS. 2, 11 is a CPU, 12 is a control program memory, 1
3 is a processing data memory, 14 is a control data memory, 15
Is a setting display interface (hereinafter referred to as I / F), 1
6 is a display device, 17 is a keyboard (hereinafter referred to as K / B)
Device, 18 is an input I / F, 19 is an output I / F, 20 is a rotation axis data I / F, 21a to 21n are reciprocating axes (horizontal axis)
1 to n data I / F, 22 is a rotating shaft drive amplifier, 23a
23 to 23n are reciprocating axes (horizontal axes) 1 to n driving amplifiers.

The CPU 11 sequentially reads out and executes each step of the control program stored in the control program memory 12 to execute functions required for the control device (in the control device of the present invention, analysis of K / B input information, Data display on the display device, input based on a predetermined form
The control of each unit and the whole is performed so as to perform the operation of the stored processing data on the axis control data, the servo data processing of each axis, and the like. In the automatic operation of the mechanical device, the CPU 1 operates according to an automatic operation process defined by a control program stored in the control program memory 12.
1 reads and analyzes the processing data stored in the processing data memory 13 and causes the control data memory 14 to store control data such as the amount of movement of each control axis per unit time.

The setting display I / F 15 includes a display device 16 and K
The data exchange between the / B device 17 and the CPU 11 is performed to perform address conversion and allocation of data. This allows
The data stored in the processing data memory 13 and the control data memory 14 is displayed at a predetermined position on the display device 16,
The status of switches operated on the K / B device 17 is input to the CPU 11 via the setting display I / F 15,
The CPU 11 makes a determination based on the control program stored in the control program memory 12. For example, if the data is processing data, it is stored at a predetermined address in the processing data memory 13.

The input I / F 18 is a machine operation panel or a machine side PL.
It converts the input signal from C (programmable logic controller) so that the CPU can read it.
Various operation signals and contact signals for manual operation and automatic operation are converted, and the flow of the control program is controlled by the CPU 11. The output I / F 19 performs control of turning on and off the display lamp on the machine operation panel and output of a control signal to the machine side PLC based on the processing result of the control program. Send and receive signals to operate.

Each of the devices and means functions by an operation of an operator, and is executed by executing a manual movement command or machining data.
When the moving angle, moving amount, moving speed, and the like of the rotating shaft for rotating the rotating plate and the reciprocating shaft for reciprocating each mold are calculated, the calculated values are temporarily stored in a predetermined area of the control data memory 14, and from here, the CPU 11 Rotation axis data I / F
20, reciprocating axis 1 data I / F 21a to reciprocating axis n data I
/ F21n. Rotation axis data I / F20 and reciprocation axis 1 data I / F21a to reciprocation axis n data I / F2
1n is periodically communicated with the rotating shaft drive amplifier 22 and the reciprocating shaft 1 drive amplifier 23a to the reciprocating shaft n drive amplifier 23n. Based on the movement data, drive motors for each axis (not shown) are driven. Driven.

The position and / or speed information of the drive motors of the respective axes driven by the above-mentioned control are output from a detector attached to a drive motor (not shown) as a rotary shaft drive amplifier 22 and a reciprocating shaft 1 drive amplifier 23a to a reciprocating shaft. n drive amplifier 23n, rotation axis data I / F20 and reciprocation axis 1 data I / F21a to reciprocation axis n data I / F21n,
The data is stored and updated in the control data memory 14 by the CPU 11 and used for calculating the movement data. As described above, the control device analyzes and executes the processing data according to the procedure determined by the control program, and controls the operation of the necking machine.

Next, the operation required for the necking machine will be described with reference to FIG. FIG. 3 shows the change in the position of the reciprocating axis on the upper vertical axis, and the change in the speed of the rotary axis on the lower vertical axis, and the horizontal axis shows the passage of time. The operation of the rotating shaft shown in the lower part is to rotate the mold at every mounting pitch, and a cycle of stopping for a time (Tstp-R) necessary for the pressing operation is continuously repeated at every predetermined pitch. The operation of the reciprocating shaft shown in the upper part is to control the speed and the position so that the mold separates to a position where the mold does not mesh and does not interfere during the stationary time of the rotary shaft. Strictly speaking, a predetermined time (Tstp -P), it is necessary to stop the work deformation return by springback. In addition, it is desirable that the reciprocating shaft can move not only at a stroke for the entire stroke but also for a plurality of stages of position, speed, and PLC work so that an arbitrary work can be performed at a designated position specific to each processing step.

Next, an example of data setting required for controlling the operation of FIG. 3 will be described with reference to FIG. FIG. 4A is an example of a drive block number setting screen describing an actually driven axis when an arbitrary machining number is given, and FIG. 4B is a movement (rotation) required for one press operation of each drive axis. 4) Data setting example for specifying the amount, moving speed, PLC operation stop time, etc., FIG.
FIG. 4C shows an example of a speed setting screen for setting specific speeds when the speed is designated by a symbol in FIG.
4D is an example of a moving amount setting screen in which a specific moving (rotating) amount is similarly set when the moving (rotating) amount is designated by a symbol in FIG. 4B, and these data are processed. It is stored in the data memory 13. The PLC control data in FIG. 4 (b) is data for calling a sequence program for controlling the machine at that position. PLC0 stores the pre-rotation sequence data, and PLC1 stores the post-rotation sequence data. Show.

FIG. 5 is a flowchart of a check program at the time of automatic startup, FIGS. 6 to 8 are flowcharts of processing for analyzing and executing various data tables shown in FIG.
FIG. 9 is a flowchart of a gradually increasing / decreasing control for saving electric power by driving only an axis loaded with a work, instead of driving all of a large number of reciprocating axes at the start or end of machining. FIG. 10 shows control flags used for valid / invalid control of the drive shaft. FIG. 10 shows the case where the number of dies is up to 24. However, in the first embodiment, since the number of mounted dies is 12, information of bit0 to bit13 is used.

Hereinafter, a control example of the necking machine control device will be described with reference to FIGS. The operation mode is set to automatic operation on a machine operation panel of a machine (not shown), and an automatic start button is pressed. With this operation, the control program starts to execute the automatic startup check program shown in FIG.
This check program checks whether the data to be used matches the actual machine specifications. If the number of mounted dies (≡ step angle) does not match, the machine may be damaged. First, the number of mold stations M stored in the control data memory 14 in advance in step 1
And 360 ° / M = P is calculated. Subsequently, the step angle θ1 of the designated processing information is read from the processing data memory 13, and the process branches to step2.

In step 2, the P calculated in step 1
Is compared with the read θ1, and if P = θ1, the process is terminated because the designation is correct, and the automatic operation is continued.
If P ≠ θ1, there is a possibility that the machine will be damaged, so the process proceeds to step 3 to perform error processing.

At step 3, an error message for notifying that the program does not match the specification of the rotary axis is set, a stop signal is output, and the process is terminated. By this process, if a program suitable for the machine is not prepared, the automatic operation is stopped at the end of the check program, and an error message is output to notify the operator or the like.

FIGS. 6 to 8 show an example of a flow chart of the automatic operation control program stored in the control program memory 12, using the various data shown in FIG. Is determined, and the control contents to be operated are shown. When it is determined in the automatic start check in FIG. 5 that the command is correct, the controls in FIGS. 6 to 8 are executed.

First, in step 21, the operation in progress flag is checked to read information for rotation / movement control of each axis and mechanical control and stop time control by the PLC as shown in FIG. Check if driving is in progress. If the operation is not being executed, the process proceeds to step 22, and from the information group stored in the processing data memory 13 for operation preparation, a block number registered in a designated processing number and a series of control corresponding thereto are designated. Read data. One block number is assigned to each mold unit for each mold group, and only the block numbers registered here are to be driven. Therefore, for example, if there is an unnecessary mold, it can be stopped just by deleting the block number of the mold, and power can be saved. Further, in reading a series of data corresponding to each read block number from the drive block data area, if a speed and a movement amount or a command position are specified by a symbol, the speed setting area and / or the movement amount setting area are used. , The actual speed and the movement amount or the command position are read. Since it is not necessary to read the read data every time until the operation is completed, the operation execution flag is turned on to prevent the data from being read again. If the operation is being performed, the data has already been taken out, so there is no need to read it again, and the process branches to step 23.

In step 23, the operation of the reciprocating shaft is checked prior to the driving of the rotating shaft. In other words, if the rotating shaft rotates while the reciprocating shaft is operating, there is a risk of interference between the dies. Therefore, by checking the command data output to the servo motor drive amplifier or the feedback signal of the servo motor, It is determined whether it is moving. If it is not moving, it can rotate, so it branches to step 25,
If it is moving, the movement status is checked in step 24. In step 24, it is determined whether or not the maximum remaining distance of all the axes at the time of return of the reciprocating axis has become equal to or less than the set value, and the set value is set to a distance at which the mold does not interfere. Drive the rotating shaft when it becomes true. If the set value is not reached, step 3
8 (axis control 1). The set value is stored in the control data memory 14 in advance, and the return stroke length of the reciprocating axis is known in advance. (= Stroke length-cumulative value of command data output to the servo motor drive amplifier) is calculated, and the calculated remaining distance is compared with the set value to obtain the maximum of all the axes when the reciprocating axis returns. It can be determined whether or not the remaining distance has become equal to or less than the setting.

In step 25, when the reciprocating shaft is not moving,
Alternatively, even when moving, it is executed when returning and the remaining distance is long enough to prevent the mold from interfering. Checking the one-step execution flag indicates whether or not the one-step angular movement of the rotating shaft is being executed. Check. If the rotating shaft is rotating, the process branches to step 27;
Proceeding to ep26, data for one-step angle rotation is prepared. In step 26, 1 indicating that the machine is rotating
The step execution flag is turned on, and data necessary for one-step rotation, that is, whether or not there is a sequence (hereinafter, referred to as SQ) operation by a PLC for performing material supply / discharge before or after one-step rotation, for example, and SQ is required If so, the address of the SQ program necessary for the execution is set in the interface of the rotation angle and rotation speed data of one step, the time for stopping the rotation axis for pressing, and the process proceeds to step 27.

At step 27, by checking the SQ pre-rotation execution flag, it is checked whether the pre-rotation SQ command is being executed. If not, the process proceeds to step 28 to determine whether the SQ operation is commanded. Check. If SQ is instructed in step 28, step 2
In step 9, the SQ in-rotation flag is turned on, and the PLC program at the specified address is started. Before rotation S
The Q running flag is turned off by the PLC when the SQ operation is completed. SQ is being executed in step 27, or step 28
If it is determined that there is no SQ before rotation, the process of step 29 is skipped, and the process branches to step 30.

In step 30, acceleration / deceleration calculation is performed based on the rotation angle and rotation speed of one step set in step 26, and a rotation angle per unit time is obtained and sequentially output. In step 31, the remaining angle of the instructed one-step angle is checked, and the process branches to step 38 until the remaining angle is 0, that is, the rotation is completed, and the execution of the SQ after the rotation is skipped. Here, when the pre-rotation SQ is designated, the SQ and the rotation are executed simultaneously, but the rotation can be easily performed after the execution of the SQ.

If it is determined in step 31 that the rotation has been completed, the process proceeds to step 32, where the after-rotation SQ command is being executed by checking the after-rotation SQ execution flag. If SQ is not running, step 33
To check if the SQ operation is set after rotation. If SQ is commanded in step 33, s
Proceeding to step 34, the after-rotation SQ execution flag is turned on, and the PLC program at the specified address is started. The post-rotation SQ execution flag is turned off by the PLC when the SQ operation is completed. If SQ is being executed in step 32, or if it is determined that there is no SQ after rotation in step 33,
The process of p34 is skipped, and the process branches to step 35.

At step 35, the stop state after one step rotation is checked, and it is determined whether or not the stop time for the press has elapsed. If the stop time (Tstp-R in FIG. 3) remains, the subtraction is performed for a predetermined time (arbitrary unit time), and the process proceeds to step 38 (axis control 1). If the stop time has elapsed (remaining time = 0) in step 35, step 37
To turn off the 1-step execution flag, and
Proceed to p38 (axis control 1).

In order to start axis control of the reciprocating shaft from step 38, it is first checked whether or not the rotating shaft is moving. If not, the process branches to step 40 to prepare for reciprocating shaft activation. If the rotation is being performed, the process proceeds to step 39 to check whether or not the remaining rotation angle has become equal to or smaller than the set value. If the angle reaches the remaining angle at which the reciprocating shaft may be activated, ste
Go to p40 and make preparations, if not, step
Branch to 42.

In step 40, by checking the one cycle execution flag, it is checked whether one cycle of the reciprocating axis is being executed. If the data is being executed, the data preparation for the reciprocation axis movement has been completed, so that step 41 is skipped and the flow branches to step 42.
Proceeding to step 41, after the one-cycle execution flag is turned on, data preparation is performed. First, data necessary for one-cycle movement, that is, whether or not there is an SQ operation by the PLC for performing, for example, a mold-specific auxiliary operation (for example, lubricating oil supply to the mold) before and after the one-cycle movement, If the SQ is requested, the address of the SQ program required for the execution, the time for stopping the reciprocating shaft for a predetermined time for the press, the presence / absence of the command position of each stage required for one cycle movement, the position command, The feed speed data is set in the interface, and the flow advances to step 42.

In step 42, each axis SQ before the reciprocating axis movement
Check if there is any operation, and if SQ operation is necessary,
Proceeding to ep43, the address of the SQ program is sent to the PLC and activated, and the process branches to step 56 (axis control 2). When the SQ program is completed, the before-movement SQ flag is turned off, and if step 42 is executed after the next unit time, there is no SQ before movement, and the process branches to step 44.

At step 44, by checking the first movement flag, the presence or absence of the first movement of the movement divided into three stages of the reciprocating axis is checked, and if the position and the speed are set, the process proceeds to step 45 and proceeds to step 45. Calculations such as acceleration / deceleration are performed using the data, movement data per unit time is calculated, and these are sequentially output per unit time. When all the calculated data has been output, the first movement flag is turned off to complete the first movement. When the first movement is completed in step 44, the flow branches to step 46. Dividing the driving of the reciprocating shaft (one stroke) into a plurality of stages (three stages in the first embodiment) can reduce the friction and reduce the driving torque as compared with performing the drawing and molding in one stroke. This is because the finish can be improved. In some cases, it may be desirable to incorporate a predetermined SQ in the middle of one stroke. For example, if dither (fine vibration) is given during pressing, the above effect is further increased. Drive mechanism
This is because if the SQ for executing the SQ is to be incorporated in one stroke, the SQ cannot be incorporated unless the reciprocating shaft drive (one stroke) is divided into a plurality of stages.

In step 46, by checking the SQ flag after the first movement, it is checked whether or not there is an SQ operation after the first movement.
In step 7, the address of the SQ program is sent to the PLC to be activated, and the process branches to step 56 (axis control 2). When the SQ program is completed, the SQ after first movement flag is turned off, and when step 46 is executed after the next unit time, there is no SQ after first movement, and the process branches to step 48.

In step 48, by checking the second movement flag, it is checked whether or not there is a second movement among the movements divided into three stages of the reciprocating axis. If the position and the speed are set, the process proceeds to step 49 and proceeds to step 49. Calculations such as acceleration / deceleration are performed using the data, movement data per unit time is calculated, and these are sequentially output per unit time. When all the calculated data has been output, the second movement flag is turned off to complete the second movement. If the second movement has been completed in step 48, the flow branches to step 50.

In step 50, by checking the SQ flag after the second movement, it is checked whether or not there is an SQ operation after the second movement.
Proceeding to step 1, the address of the SQ program is sent to the PLC to be activated, and the process branches to step 56 (axis control 2). When the SQ program is completed, the SQ after second movement flag is turned off. When step 50 is executed after the next unit time, there is no SQ after the second movement, and the process branches to step 52.

In step 52, by checking the third movement flag, it is checked whether or not there is a third movement among the movements divided into three stages of the reciprocating axis. If the position and the speed are set, the process proceeds to step 53 and proceeds to step 53. Calculations such as acceleration / deceleration are performed using the data, movement data per unit time is calculated, and these are sequentially output per unit time. When all the calculated data is output, the third movement flag is turned off to complete the third movement. When the third movement has been completed in step 52, the flow branches to step 54.

In step 54, by checking the SQ flag after the third movement, it is checked whether or not the SQ operation is performed after the third movement.
Proceeding to step 4, the SQ program address is sent to the PLC to be started, and the flow branches to step 56 (axis control 2). When the SQ program is completed, the SQ after third movement flag is turned off. When step 54 is executed after the next unit time, the SQ after the third movement becomes null and the process branches to step 56.

In step 56, at the position where the first to third movements have been completed, that is, at the bottom dead center of the press, a waiting time (FIG.
By checking (Tstp-P), it is checked whether or not to stop for a certain time, and if the bottom dead center stop is set, the process proceeds to step 57 to check whether or not the waiting time is completed. If there is no bottom dead center stop in step 56, or if the waiting time is up in step 57, step
In step 58, acceleration / deceleration calculation is performed based on the return movement amount and the speed, and the movement data is output to return the reciprocating axis to the initial position.

In step 59, the maximum remaining distance in the mold group is checked. If the remaining distance is less than the set value, there is no interference of the mold even if the rotating shaft is rotated, so that the rotation of the next step angle can be executed. Therefore, if Yes is determined in step 59, the process proceeds to step 60, in which the rotation axis start flag is turned on and s
Proceed to step 61. If step 59 is No, ste
Branching to p61, the activation of the rotating shaft is suspended.

Step 61 and subsequent steps are processing for terminating the processing, and are intended to prevent the work from being left in the mold being processed. That is, when the machining end button is pressed at an arbitrary time, the above operation is realized by terminating the operation after approximately one rotation. The final processing flag checked in step 61 is a flag that is set after the processing end button is pressed and a predetermined process is performed. Normally, the process branches to step 66 with No and checks whether or not to enter a processing end cycle. I have.

If the final machining flag is turned on in step 61, the operation ends after approximately one rotation. If Yes is determined in step 61, step 62
To check whether or not the one-step rotation has been completed. If the one-step rotation has not been completed,
Branching to p66, if one-step rotation is completed, ste
Proceeding to p63, update is performed by subtracting 1 from the remaining cycle number.
In step 64, it is checked whether or not the remaining cycle number is 0. If it is 0, the process proceeds to step 65, in which the final machining flag and the operation in progress flag are turned off, the operation end flag is turned on, and the present process ends. This operation end flag is also used outside of this control, and is turned off when the automatic operation is completely ended. If the remaining cycle number is not 0 at step 64, the operation is continued.

If the processing end memo flag is off at step 66, the flow branches to step 69, and if it is on, step
At 67, it is checked whether the one-step rotation of the rotating shaft has been completed. If one step rotation is completed, step
Go to step 68, turn on the machining end memo flag and the final machining flag, and leave the number of remaining cycles (the number of press cycles until the last input material becomes a workpiece and discharge it. Is set), and this processing ends. If the one-step rotation has not been completed in step 67, the process is terminated, and a check in the next cycle is waited.

In step 69, the state of the operation panel is monitored for each process.
The processing proceeds to 0, the processing end memo flag is turned on, and this processing ends. If the processing end button has not been pressed in step 69, the present process is ended, and a check in the next cycle is awaited.

FIG. 9 shows the control for one rotation of the first or last rotation shaft of the automatic operation. In the first rotation, the material is supplied only to the first mold, and there is no need to move the reciprocating axes of the other molds, and it is sufficient to drive only the necessary axes. In addition, since the material supply is stopped even in the last one rotation, the number of the molds in which the work remains is gradually reduced.
Therefore, if the axes of the molds that do not grip these workpieces are not driven, power consumption will be reduced. Although the order is changed for convenience of description, the present control is preferably executed before the automatic operation control shown in FIGS. 6 to 8.

In step 101, it is checked whether or not the above-mentioned control is to be performed by using an increase / decrease control flag. If the flag is off, there is no increase / decrease control, and the process is immediately terminated. If there is an increase / decrease control, the process proceeds to step 102, and it is checked whether or not the increase is in progress. If it is gradually increasing, branch to step 107,
Control the drive control flag. If not gradually increasing, step
Proceed to 103 to check whether or not it is gradually decreasing. If the gradual decrease is in progress, the process branches to step 114 to perform the gradual decrease control. st
If the gradual decrease is not performed in ep103, the process proceeds to step 104, and the automatic start 1 that is turned on for a fixed time at the time of automatic start 1
Check the flag for the second time, and if it is not the first time, step
Branch to 111.

If it is determined in step 104 that the automatic start is the first time, the process proceeds to step 105, in which the flag during the gradual increase is turned on, and the remaining cycle number counter (hereinafter simply referred to as a counter) is set to 1. The counter is at the end of machining
Is used in the control shown in (1), but its value is used. However, since it is not used at the start of machining, it is used for drive axis selection control at the start of machining. Then step10
Then, the process proceeds to step 6 to clear the drive axis control flags bit0 (corresponding to the rotation axis) prepared for the number of control axes. FIG. 8A shows a list of the drive shaft control flags, and FIG. 8B shows changes in the drive shaft control flags and the drive shaft control status at the time of gradually increasing and gradually decreasing.

In step 107, the bit of the drive axis control flag corresponding to the counter value is turned on, and step 1
At 08, the counter is incremented (+1) and updated, and at step 109, it is checked whether or not the gradual increase control has been completed. The change at the time of gradual increase is such that as shown in the time of gradual increase in FIG. 8B, each reciprocating shaft is sequentially turned on depending on the contents of the counter, and in the case of the first embodiment, twelve dies are mounted. , The gradual increase control is completed when it reaches 12. If it is determined in step 109 that the gradual increase control is completed, the gradual increase flag is turned off in step 110,
The process ends.

Step 111 is executed when there is an increase / decrease control and neither a gradual increase nor a gradual decrease, that is, when the gradual decrease is awaited, and becomes effective when the final processing is started after the processing end button is pressed. If the final machining flag is on, ste
Proceeding to p112, only the gradually decreasing flag is turned on, and the process ends. This is because it is necessary to operate all the reciprocating shafts at the first time of the final processing.

Next, when this processing is entered, the gradually decreasing flag is on, so that step 103 to step 103 are executed.
The process branches to 113 to turn off the bit of the drive axis control flag corresponding to (M-counter value). According to the first embodiment, since the counter branches to 23 when the counter reaches 23, (M-counter value) is 1, 2, 2,
It changes to 3, ... At step 114, it is checked whether or not the counter has become 1. If it is 1, the gradual decrease control ends, so the routine proceeds to step 115, where the gradual decrease flag is turned off, and the process ends.

FIG. 10A shows a drive axis control flag, and FIG.
0 (b) shows the change of the remaining cycle number counter and the drive shaft flag under the control of the steps 101 to 115 separately at the time of gradually increasing and gradually decreasing. In the table at the time of the gradual decrease, "all reciprocating axes are turned on" is initially set. However, in general, all the reciprocating axes are turned on during continuous machining, and therefore can be ignored in practice. For example, when the counter value is 24 (at the beginning of the end cycle in a machine equipped with 24 dies), NO
P (abbreviation of No Operation) is because it is necessary to drive all axes at the time of final processing, and specifically, the process of turning off the bit corresponding axis is skipped.

Embodiment 2 Regarding the operation of the reciprocating axis described above, as shown in FIG.
Q), first movement, first SQ, second movement, second SQ, third
The data group configured to perform the movement, the third SQ, and the stop time control has been described. However, the setting of the stop time before the movement is added to the above data, and the elapsed time of this time is first checked to check each state. A time difference can be given to the start of axis movement. In this case, by dispersing the drive start times of the units, the peak of the power consumption associated with driving the motor can be dispersed, so that the maximum power consumption can be suppressed. Further, if the pressing start time at the time of pressing is set to be dispersed, the reaction force accompanying the pressing can be dispersed, so that the load on the machine can be reduced.

Embodiment 3 As for the operation of the reciprocating shaft described above, as shown in FIG. 1, one linear motor is installed and driven in correspondence with each mold.
As shown in FIG. 11, it is also possible to configure a block in which a plurality of adjacent dies are put together, and to install and drive one motor corresponding to each block. The plurality of adjacent dies may have different shapes or may have the same shape. Also,
In the case of a mold having a different shape, there is a case where there is a difference in a stroke that can be molded, and this difference can be easily dealt with by mechanically adjusting. In such a configuration, when there are many dies having a light load, the mechanical structure can be made simple and inexpensively by using such a configuration.

Embodiment 4 In the above description, the operation of the reciprocating shaft has been described in such a manner that all the shafts are driven almost simultaneously. However, when the load of each shaft is large, the shafts on the diagonal lines are driven simultaneously, and the mechanical load is shifted by sequentially shifting the driving shaft. Can be controlled so as to be lightened. When there are many dies with a large load, the mechanical structure can be made simple and inexpensively by configuring in this way.

Embodiment 5 FIG. Also, the description of the drive system of the rotating shaft in the above control is omitted, but by directly rotating the rotating shaft with a servo motor or the like and directly rotating the motor, a general-purpose motor, a universal joint as conventionally used, a universal joint In addition, the disadvantages such as the complexity of the machine due to the gear cutting of the worm gear and the rotating plate and the short life due to the high frequency positioning are improved.

Embodiment 6 FIG. Furthermore, the drive system of the reciprocating shaft in the above control has been described using a linear motor, but it goes without saying that a similar configuration can be made using a rotary servomotor and a ball screw. By individually driving the mold with a rotary servomotor and a ball screw or linear motor in this way, a machine that uses a general-purpose motor, a crank mechanism, and a collective drive of a reciprocating plate equipped with all the molds, as used conventionally, is used. The disadvantages such as the large bearing size and the short service life of the bearing due to the frequent positioning of heavy objects have been improved, and servo control can be performed for each axis. Can be corrected,
Machine adjustment becomes easier.

Embodiment 7 FIG. FIG. 12 shows another structural example of the machine according to the present invention. While FIG. 1 used in the above description follows the conventional mechanical structure shown in FIG. 14, the reciprocating shaft column is immobilized, and each mold of the reciprocating plate is driven by a linear motor. In No. 12, the reciprocating shaft column is eliminated, and the machine base is expanded to integrally support the reciprocating shaft plate from below. Thus, it is not necessary to increase the weight distribution on the rotating shaft side in order to balance the weight, so that the machine can be easily designed and the structure can be simplified.

Embodiment 8 FIG. FIG. 13 shows another example of the arrangement of the dies. In the conventional example, the dies are arranged on the circumference, whereas in the present example, the dies are arranged in a lattice shape. These dies are connected by a chain to form a loop, and are sequentially moved on a predetermined passage. More dies can be arranged in a certain area as compared with those in which dies are arranged on the circumference.

[0067]

As described above, according to the present invention, a rotating plate for mounting a first mold group and rotating the first mold group by a predetermined angle, and reciprocatingly move toward the rotating plate. A press equipped with a plate on which a second mold group is mounted, and a press machine for molding a work from a material using the first mold group and the second mold group; Since a drive mechanism for independently driving each mold and a control device for controlling the drive mechanism are provided, it is not necessary to reciprocate the plate on which the second mold group, which is a heavy object, is mounted at high speed during pressing. . Therefore, miniaturization of motor
Power saving, longer machine life, and easier adjustment can be achieved, resulting in a smaller machine, improved reliability, easier adjustment and power saving, and good mold control flexibility. There is an effect that a press machine can be obtained.

According to the present invention, the first mold group is mounted and the rotating plate rotates the first mold group by a predetermined angle, and the second mold reciprocates toward the rotating plate. A plate mounting a group, a press machine for molding a workpiece from a material using the first mold group and the second mold group, a plurality of molds adjacent to the second mold group The mold is divided into blocks, and a drive mechanism that drives each block independently and a control device that controls this drive mechanism are provided. There is no need to drive, and a mold or a workpiece that can be machined with a small torque can be driven by one motor by blocking a plurality of molds. Therefore, it is possible to reduce the size of the motor, save power, extend the life of the machine, facilitate adjustment, and simplify the structure. As a result, the machine can be reduced in size, reliability can be improved, adjustment can be facilitated, cost can be reduced, and power can be saved. Therefore, there is an effect that it is possible to obtain a press machine that can realize the pressurization and has a good degree of freedom of the mold control.

Further, according to the present invention, the control device comprises:
Since the drive mechanisms are configured to be independently driven and controlled, in addition to the above-described effects, it is possible to perform various mold drive controls according to the purpose described in the second and fourth embodiments.

Further, according to the present invention, the rotary plate on which the first mold group is mounted is rotationally driven by the servomotor directly connected to the rotary plate, so that a reduction gear is not required, and the size of the machine is further reduced. This has the effect of realizing high performance, high reliability, easy adjustment, low cost, and power saving.

According to the present invention, the first mold group is mounted and the rotating plate rotates the first mold group by a predetermined angle, and the second mold reciprocates toward the rotating plate. A plate mounted with a group, a control device of a press machine for molding a work from a material using the first mold group and the second mold group, each of the second mold group A mold, or a drive mechanism for independently driving blocks composed of a plurality of adjacent molds, and a control device for controlling the drive mechanism are provided.
Command position of axis corresponding to each mold or each block,
Since a control data input screen for inputting at least one of the command speed, the auxiliary operation command, and the stop time is provided and the reciprocating operation is controlled based on the input data, the second press, which is a heavy object, is pressed at the time of pressing. The need for high-speed reciprocating drive of the plate on which the mold group is mounted is eliminated. Therefore, downsizing of the motor, power saving, extension of the service life of the machine, and easy adjustment can be achieved, and furthermore, downsizing of the machine, improvement of reliability, easy adjustment, and power saving can be realized. In addition, since control data is input from the control data input screen, an operator or the like can easily input control data according to the mold mounting situation of the machine at the machine installation location, and therefore, a press having a high degree of freedom in mold control. You can get the machine.

Further, according to the present invention, the first die group is mounted, and the first die group is rotated by a predetermined angle at a step angle, a rotation speed, and before and / or after the rotation of the rotating plate. It has a control data input screen for inputting at least one of an auxiliary operation command and a rotation stop time, and a rotation plate control device for controlling the rotation operation based on the input data is provided, so that the size and power consumption of the motor can be reduced.・
The life of the machine can be extended and the adjustment can be facilitated, so that the machine can be downsized, the reliability can be improved, the adjustment can be easily performed, and the power can be saved. In addition, since control data is input from the control data input screen, an operator or the like can easily input control data according to the mold mounting situation of the machine at the machine installation location, and therefore, a press having a high degree of freedom in mold control. You can get the machine.

Further, according to the present invention, the control device for the second mold group independently controls the driving of the drive mechanisms, and the control device for the second mold group starts the machining. Sometimes, a step-up control means for increasing the number of axes to be driven sequentially from the mold at the material loading position is provided, so that unnecessary axes for machining are not fed in an idle manner, so that in addition to the above effects, further power saving can be realized. This has the effect.

Further, according to the present invention, the control device for the second mold group controls the drive mechanisms independently of each other, and the control device for the second mold group has a machining device. At the end, in the drive control of the second mold group provided with a gradual decrease control means for decreasing the axis to be driven sequentially from the mold at the material loading position, at the end of machining, the axis to be driven sequentially from the mold at the material loading position. Since the gradual decrease control means is provided, the unnecessary axis for machining is not fed in an idle manner. Therefore, in addition to the above-mentioned effect, there is an effect that power saving can be further realized.

[Brief description of the drawings]

FIG. 1 is a machine schematic diagram showing a press machine according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a control device of the press machine according to the first embodiment of the present invention.

FIG. 3 is an operation timing chart of a reciprocating shaft and a rotating shaft of the press machine according to the first embodiment of the present invention.

FIG. 4 is a diagram showing a control data input screen according to the first embodiment of the present invention.

FIG. 5 is a flowchart of an automatic startup check according to Embodiment 1 of the present invention.

FIG. 6 is a flowchart showing control during automatic driving according to the first embodiment of the present invention.

FIG. 7 is a flowchart showing control during automatic operation according to the first embodiment of the present invention.

FIG. 8 is a flowchart showing control during automatic driving according to Embodiment 1 of the present invention.

FIG. 9 is a flowchart showing drive shaft gradual increase / decrease control according to Embodiment 1 of the present invention;

FIG. 10 is a diagram showing a drive shaft control flag according to the first embodiment of the present invention.

FIG. 11 is a diagram showing a configuration of a reciprocating shaft according to Embodiment 3 of the present invention.

FIG. 12 is a mechanical overview according to a seventh embodiment of the present invention.

FIG. 13 is a diagram showing control of a mold group according to Embodiment 8 of the present invention.

FIG. 14 is a schematic view of a conventional press machine.

FIG. 15 is a view showing an example of a sectional shape of a molded can.

[Explanation of symbols]

1 rotating plate, 2 molds, 3 reciprocating bearing shafts, 4 reciprocating shaft plates, 5 reciprocating shafts, 6 rotating shafts, 7 rotating plate driving mechanism, 11 CPU, 12 control program memory, 13 processing data memory, 14 control data memory, 15 setting display I / F, 16 display device, 17K
/ B device, 18 input I / F, 19 output I / F, 20
Rotation axis data I / F, 21a-21n Reciprocation axis data I / F, 22 rotation axis drive amplifier, 23a-23n reciprocation axis drive amplifier, 25 reciprocation axis drive block, 26 reciprocation axis drive motor

Claims (8)

[Claims] 1. A plate on which a first mold group is mounted and which rotates the first mold group by a predetermined angle, and a plate on which a second mold group reciprocatingly moves toward the rotating plate is mounted. In a press machine for molding a workpiece from a material using the first mold group and the second mold group, a driving machine for independently driving each mold of the second mold group. A press machine comprising a mechanism and a control device for controlling the drive mechanism. 2. A plate carrying a first mold group and rotating the first mold group by a predetermined angle, and a plate carrying a second mold group reciprocating toward the rotating plate. With a press machine for molding a workpiece from a material using the first mold group and the second mold group, a plurality of adjacent molds of the second mold group are blocked, A press machine comprising: a drive mechanism for independently driving each of the blocks; and a control device for controlling the drive mechanism. 3. The press machine according to claim 1, wherein the control device drives and controls the drive mechanisms independently of each other. 4. The press machine according to claim 1, wherein the rotary plate on which the first mold group is mounted is rotationally driven by a directly connected servomotor. 5. A plate having a first mold group mounted thereon and rotating the first mold group by a predetermined angle, and a plate having a second mold group reciprocating toward the rotating plate. In the control device of a press machine for molding a workpiece from a material using the first mold group and the second mold group, each mold of the second mold group, or adjacent A drive mechanism for independently driving blocks composed of a plurality of dies and a control device for controlling the drive mechanism are provided, and a command position of a shaft corresponding to each of the dies or each block, A control device for a press machine, comprising a machining data input screen for inputting at least one of a speed, an auxiliary operation command, and a stop time, and controlling a reciprocating operation based on the input data. 6. A step angle, a rotation speed, an auxiliary operation command to be executed before and / or after rotation of a rotating plate for mounting the first mold group and rotating the first mold group by a predetermined angle, and a rotation. The control of the press machine according to claim 5, further comprising a processing data input screen for inputting at least one of the stop times, and a rotary plate control device for controlling a rotation operation based on the input data. apparatus. 7. The control device for the second mold group independently controls the driving of the drive mechanisms, and the control device for the second mold group has a material loading position at the start of machining. 7. The control device for a press machine according to claim 5, further comprising a gradual increase control means for increasing the number of shafts to be driven sequentially from the mold. 8. The control device for the second mold group independently drives and controls the drive mechanisms, and the control device for the second mold group has a material loading position at the end of machining. The control device for a press machine according to any one of claims 5 to 7, further comprising a gradual decrease control means for decreasing the number of shafts to be driven in order from the mold.