JP2020019048A - Belt-like work-piece transfer device for press machine and transfer parameter setting method for belt-like work-piece transfer device - Google Patents

Abstract

To easily set a transfer parameter by measuring a transfer time of a belt-like work-piece according to a press speed without depending on a rotation angle of a crank shaft even if a press operation is executed by non-continuous rotation of an electric motor or a press operation is executed by reciprocating a slide in the vicinity of a bottom dead point at an unequal angular speed in association with continuous rotation of the crank shaft.SOLUTION: A transfer time between a transfer start teaching signal of a belt-like work-piece, which is outputted by slide position detection means 21 at timing at which a movable metal mold of a slide is moved to a first movement position at which the movable metal mold is separated from a stationary metal mold, and a transfer stop teaching signal of the belt-like work-piece, which is outputted at timing at which the movable metal mold of the slide is moved to a second movement position at which the movable metal mold approaches the stationary metal mold, is measured during a test operation of a press machine, and a transfer parameter of the belt-like work-piece by an electric motor 29 is set on the basis of the measured transfer time and a transfer length of the belt-like work-piece.SELECTED DRAWING: Figure 4

Description

   The present invention relates to a belt-shaped work transfer device and a transfer parameter setting method for intermittently feeding a band-shaped work to a press machine at predetermined lengths, and more particularly to a press speed that is not restricted by a mold elevating mechanism of the press machine. The present invention relates to a belt-shaped work transfer device for a press machine and a transfer parameter setting method that can easily set transfer parameters such as transfer speed, transfer acceleration / deceleration, and the like.

For example, as shown in Patent Document 1, on the carry-in side of a press machine, there are provided a driving rotating body connected to an electric motor and a pressing rotating body which comes into contact with and separates from the driving rotating body, and the pressing rotating body is driven by the rotating driving of the driving rotating body. A belt-like work transfer device is provided that intermittently transports a band-like work held in cooperation with a rotating body at predetermined intervals and supplies the work to a press machine.

In the above-mentioned band-shaped workpiece transfer device, when the slide moves from the bottom dead center to the top dead center after the pressing operation, the pressing rotary body is rotated by the driving rotary body which is driven to rotate at the timing when the movable die is separated from the fixed die. After pressing and holding the strip-shaped workpiece between them and transferring to the press machine side, when the slide goes to the bottom dead center via the top dead center, the movable die approaches the fixed die and is pressed against the drive rotating body. The belt-like work is intermittently supplied to the press machine with a predetermined length by interrupting the transfer of the belt-like work by releasing the pressure contact of the rotating body.

On the other hand, in a press machine, the crankshaft (output shaft of the electric motor) is continuously rotated only in one direction, and the press die is reciprocated at a constant angular velocity with a stroke twice the eccentricity of the crankshaft. Flywheel presses for performing work are known.

In the case where the above-mentioned band-shaped work transfer device is provided in a flywheel press machine, for example, as shown in FIG. The belt is transferred by a transfer parameter based on a predetermined transfer time set in accordance with the crank angle, and the rotation of the driving rotary body is controlled so as to stop the transfer after the lapse of the predetermined time. It is possible to supply.

However, in recent years, a servomotor that can be numerically controlled is used as a drive source for moving the slide (movable mold), and the slide direction is controlled by switching the direction of rotation of the servomotor and repeating the crankshaft reversal. A servo press machine that performs press work by reciprocating (pendulum motion) at an irregular angular velocity and an arbitrary stroke near the bottom dead center, and a slide near the bottom dead center due to continuous rotation of the crankshaft. A knuckle type or link type press machine which reciprocates at an angular velocity is known.

In particular, in the case of a servo press machine, by setting the slide stroke by adding the stroke necessary for the press and the minimum stroke to secure the transfer time of the strip-shaped work, the synchronous operation with the peripheral automatic machine is optimized. In addition, it is possible to improve productivity by eliminating wasted time in which a belt-shaped workpiece is not fed or pressed.

However, when the crankshaft rotates discontinuously like a servo press, or when the slide reciprocates at an irregular angular velocity near the bottom dead center while the crankshaft rotates continuously like a knuckle press or link press. Cannot determine the transfer time of the strip-shaped work from the rotation angle of the crankshaft, and therefore could not set the transfer parameters according to the press speed.

JP-A-2015-20197 JP-A-2017-192959

The problem to be solved is that the press work is performed by discontinuous rotation of the electric motor or the press work is performed by reciprocating the slide near the bottom dead center at an irregular angular velocity while continuously rotating the crankshaft. In this method, a transfer parameter capable of transferring a belt-like work in a transfer time corresponding to a press speed cannot be set from the rotation angle of a crankshaft.

  The invention according to claim 1 is provided in a press machine that presses a band-shaped work carried between a fixed mold and a movable mold provided on a slide with reciprocation of the slide, and is a numerically controllable electric motor. In a belt-shaped workpiece transfer device that sequentially drives a belt-shaped workpiece between a fixed die and a movable die at a predetermined feed amount by controlling a motor based on a transfer start signal, the movable die is moved from the fixed die. A slide position detecting means for detecting a first moving position of the slide to be detached and a second moving position of the slide where the movable mold approaches the fixed mold; and a slide position detecting means for the test operation of the press machine. Is output at the timing when it is moved to the first movement position, and is output at the timing when the transfer start teaching signal and the slide of the belt-shaped work are moved to the second movement position. Control means for measuring a transfer time between the transfer stop teaching signals of the strip-shaped work, and setting transfer parameters of the strip-shaped work by the electric motor based on the measured transfer time and the transfer length of the strip-shaped work. Is the most important feature.

  According to an eleventh aspect of the present invention, there is provided an electric machine provided with a press machine which presses a band-shaped work carried between a fixed mold and a movable mold provided on a slide with reciprocation of the slide, and which can be numerically controlled. When setting the transfer parameters of the belt-like workpiece transfer device that sequentially drives the belt-like workpiece between the fixed die and the movable die by controlling the driving of the motor based on the transfer start signal at a predetermined feed amount, 1) a test operation of the press machine prior to the pressing operation; (2) a transfer start teaching signal of the belt-shaped work output at a timing when the movable mold of the slide is moved to the first movement position where the movable mold is separated from the fixed mold; (3) measuring the transfer time between the movable die of the slide and the transfer stop teaching signal of the belt-shaped work which is output at the timing when the movable die moves to the second movement position approaching the fixed die; The most main feature is that the above-described (1) to (3) are sequentially performed, in which the transfer parameters of the electric motor are calculated based on the transferred transfer time and the transfer length of the strip-shaped workpiece to set the transfer parameters of the electric motor. And

The present invention relates to a case where a press operation is performed by discontinuous rotation of an electric motor, and a case where a press operation is performed by reciprocating a slide near a bottom dead center at an irregular angular velocity with continuous rotation of a crankshaft. Also, it is possible to easily set the transfer parameters by measuring the transfer time of the strip-shaped work in accordance with the pressing speed without depending on the rotation angle of the crankshaft.

It is a perspective explanatory view showing the state where a belt-like work transfer device was provided by a press machine. It is explanatory drawing which shows the example of a sliding movement position detection means. It is a perspective explanatory view which shows the outline of a belt-shaped workpiece transfer apparatus. It is an electric block diagram of the control means of a strip-shaped workpiece transfer device. (A) is a chart showing the operating state of the press machine, (B) is a chart showing the elevating operation of the slide, (C) is a chart showing the output state of the transfer start signal and the transfer stop signal, and (D) is a chart of the electric motor. 5 is a chart showing a driving state.

  During the test operation of the press machine, the transfer start teaching signal of the strip-shaped work and the movable mold of the slide, which are output at the timing when the movable mold of the slide is moved to the first movement position where the movable mold of the slide is disengaged from the fixed mold by the slide position detecting means, are output. The transfer time between the transfer stop teaching signals of the strip-shaped work output at the timing of moving to the second movement position approaching the fixed mold is measured, and the motor is driven based on the measured transfer time and the transfer length of the strip-shaped work. The best mode is to set the transfer parameters of the belt-like work by the motor.

The present invention will be described below with reference to the drawings showing the embodiments.
1 to 3, the press to which the belt-shaped work transfer device 1 is attached may be any of a conventionally known flywheel press, knuckle press, link press, and servo press. For example, the knuckle press 3 A slide 7 is supported by a linear guide 5a provided on the press body 5 so as to be able to move up and down, and a knuckle mechanism 8 is connected to the slide 7. The knuckle mechanism 8 is rotatably supported at the other end of a connecting rod 9b whose one end is rotatably supported at an eccentric portion of the large-diameter gear 9a to which the electric motor 11 is connected. The slide 7 is moved up and down by a knuckle mechanism 8 that operates with driving, and reciprocates at an irregular angular velocity near the bottom dead center.

  Reference numeral 13 in the figure denotes a rotation angle detecting member (shown in FIG. 4) such as a resolver or a rotary encoder provided on the electric motor 11. The details of the knuckle press machine 3 are well known in the art, and a description thereof will be omitted.

  On the slide 7, a metal workpiece 15 fed from a coil material wound in a coil shape is formed into a product (having a desired shape) by cooperation with a fixed mold (lower mold) 19 provided on the press body 5. (Not shown), a movable die (upper die) 17 for punching (pressing) is attached.

The knuckle press 3 outputs a release start signal and a release end signal based on the detection signal output from the rotation angle detection member 13. The release start signal is output at the timing when the movable die 17 approaches the fixed die 19, and the release end signal is output at the timing when the movable die 17 separates (extracts) from the fixed die 19.

The release start signal and the release end signal described above do not necessarily have to be output from the knuckle press machine 3. For example, the release start signal and the release end signal are output from the strip-shaped workpiece transfer device 1 described later, respectively. The configuration may be as follows.

The press main body 5 constitutes a part of a linear scale 21 as a slide position detecting means, and is provided with a scale main body 21a extending in a vertical direction with a length corresponding to at least a vertical stroke of the slide 7, and a slide 7 is provided. Is provided with a detection unit 21b that constitutes a part of the linear scale 21 so as to face the scale main body 21a.

The linear scale 21 may be any of a conventionally known optical type (including a reflection type), an electromagnetic induction type, a magnetic type, etc., and a slide bottom dead center or a slide top dead center (in this example, a slide bottom dead center). The moving direction of the slide 7 (ascending or descending) is detected based on the amount of movement (elevation) of the slide 7 from the bottom dead center or the top dead center, respectively. .

In the present invention, as the slide position detecting means, in addition to the linear scale 21, the rising position of the slide 7 and the belt position corresponding to the transfer start teaching timing of the band-like work 15 by the band-like work transfer device 1 described later with respect to the slide bottom dead center. A conventionally known detector such as a limit switch or an optical detector may be provided at the lower position of the slide 7 corresponding to the transfer stop teaching timing of the belt-shaped work 15 by the work transfer device 1. In this case, conventionally known detectors such as limit switches, optical detectors, and magnetic detectors are provided on the press body 5 corresponding to the bottom dead center and top dead center of the slide 7, respectively. The moving direction of the slide 7 is detected on the basis of the detection signal from.

Reference numeral 23 in the figure denotes a guide post which has an axis in the vertical direction and is attached to the fixed mold 19, 25 denotes an attached to the movable mold 17, and the guide post 23 is inserted when the slide 7 is lowered. This is a boss for positioning the fixed mold 19 and the fixed mold 17 with each other.

A belt-shaped work transfer device 1 is provided on the carry-in side of the press machine body 5. A main body frame (not shown) of the belt-like work transfer device 1 rotatably supports a driving rotary body 27 which constitutes a part of a transfer means having an axis in a horizontal direction perpendicular to the vertical direction of the slide 7. An electric motor 29 such as a servomotor that can be numerically controlled is connected to the driving rotator 27. A feed amount detector 31 (shown in FIG. 4) such as a magnetic or optical rotary encoder is attached to the electric motor 29. Detect the feed amount.

A swing arm 33 is swingably supported on the main body frame, and a pressing rotator 35 constituting a part of the transfer means is rotatable on one bowl of the swing arm 33, and the opposing drive rotator 27. Is rotatably supported on the outer peripheral surface of the shaft. Further, a pressing operation member 37 such as an air cylinder or an electromagnetic solenoid is connected to the other bowl portion of the swing arm 33, and the pressing operation member 37 is based on a release start signal and a release end signal output from the knuckle press 3. The pressing rotator 35 is swung in a direction in which the pressing rotator 35 is pressed against the driving rotator 27 and in a direction in which the pressing rotator 35 is separated from the driving rotator 27.

Reference numeral 39 in the drawing denotes a support roller that is rotatably supported on the belt-shaped workpiece transfer device 1. Further, the swing arm 33 attaches the pressing rotator 35 in a direction away from the driving rotator 27 by the elastic force of an elastic member (not shown) such as a compression spring built therein when the connected pressing operation member 37 is not operated. On the contrary, when the pressing operation member 37 is not operated, the pressing rotator 35 is urged in a direction in which the pressing rotator 35 is pressed against the driving rotator 27 by the elastic force of an elastic member (not shown) such as a built-in tension spring. It is good also as a structure which performs.

The belt-like work transfer device 1 is provided with a control box 43 in which a control means 41 described later is accommodated. In the control box 43, data relating to the feed amount of the belt-like work 15 is set, and drive control data ( A data setter 43a such as a numeric keypad for setting rotational speed data, rotational acceleration data, feed start position data, feed end position data, and the like, and a display member 43b for displaying various set data are provided.

Note that the belt-shaped work transfer device 1 may be a gripper type that grips and transfers the band-shaped work 15 in addition to the roller type described above. Regarding the details of the gripper-type strip-shaped workpiece transfer device, the description of Patent Document 2 is cited, and the detailed description thereof will be omitted.

In FIG. 4, a program memory 47 and a working memory 49 are connected to a CPU 45 of the control means 41, and program data for transferring the belt-like work 15 at a predetermined transfer length, elevating and lowering of the slide 7, are connected to the program memory 47. Program data for calculating the transfer parameters such as the transfer speed and the transfer acceleration / deceleration of the strip-shaped work 15 based on the transfer time T1 between the transfer start teaching position and the transfer stop teaching position set corresponding to the direction and the lifting position. Are stored.

The work memory 49 stores a feed amount storage area 49a for storing feed amount data of the band-shaped work 15 preset according to a product or a die, and the band-shaped work 15 detected based on a detection signal from the feed amount detector 31. , A transfer start slide position storage area 49c for storing the first movement position H1 of the slide 7 above the slide bottom dead center, which is the transfer start teaching timing of the belt-shaped work 15, The transfer stop slide position storage area 49d for storing the second movement position H2 of the slide 7 above the slide bottom dead center, which is the transfer stop teaching timing of the belt-shaped work 15, and the transfer start stored in the transfer start slide position storage area 49c. The transfer time T1 of the transfer stop teaching timing stored in the teaching timing and transfer stop slide position storage area 49d is stored. A transfer time storage area 49e, a transfer parameter storage area 49f for storing transfer parameters such as a transfer speed and a transfer acceleration / deceleration calculated based on the feed amount data of the strip-shaped work 15 and the transfer time T1, and a slide up / down operation. A slide position storage area 49g for storing the elevation position of the slide 7 with respect to the slide bottom dead center, a slide movement direction storage area (flag) 49h for storing the ascent and descent of the slide 7, and a transfer time from the start of the transfer to the stop of the transfer. A timer 49i and the like are provided.

The CPU 45 is connected to motor drive control means 51 for controlling the drive of the electric motor 29, and the motor drive control means 51 is connected to the electric motor 29 and the feed amount detector 31. The motor drive control means 51 controls the drive of the electric motor 29 based on the transfer speed data and the transfer acceleration / deceleration data stored in the transfer parameter storage area 49f, and the feed amount detector 31 with the drive of the electric motor 29. The actual feed amount of the strip-shaped work 15 is detected by the detection signal output from the storage device and stored in the actual feed amount storage area 49b, and the actual feed amount stored in the actual feed amount storage area 49b is stored in the feed amount storage area 49a. When the feed amount data of the strip-shaped work 15 matches, the drive of the electric motor 29 is controlled to be stopped, and the strip-shaped work 15 is transferred at a predetermined length and transferred so that the punched portion is located at the press position.

The slide position detection control means 53 is connected to the CPU 45. The slide position detection control means 53 is configured to raise the slide 7 with respect to the slide bottom dead center when the slide is raised and to lower the slide 7 with respect to the slide bottom dead center when the slide is lowered. Is detected and stored in the slide position storage area 49g, and when the slide 7 is raised, the movement position of the slide 7 stored in the slide position storage area 49g is stored in the first movement position H1 stored in the transfer start slide position storage area 49c. And the moving position of the slide 7 stored in the slide position storage area 49g when the slide 7 is lowered coincides with the second movement position H2 stored in the transfer stop slide position storage area 49d. A transfer stop signal is output at each timing. Further, the slide position detection control means 53 determines whether the slide 7 is in the downward direction from the top dead center to the bottom dead center or in the upward direction from the bottom dead center to the top dead center based on the detection signal from the detection unit 21b. To be stored in the slide movement direction storage area 49h.

The display control means 55 is connected to the CPU 45, and the display member 43b is connected to the display control means 55. The display control means 55 stores the feed amount of the strip-shaped work 15 stored in the feed amount storage area 49a, the actual feed amount of the strip-shaped work 15 stored in the actual feed amount storage area 49b, and the transfer start slide position in the display member 43b. The first movement position H1, which is the transfer start teaching timing of the belt-like work 15 stored in the area 49c, the second movement position H2, which is the transfer stop teaching timing of the belt-like work 15 stored in the transfer stop slide position storage area 49d. The transfer time T1 and the like of the strip-shaped work 15 stored in the time storage area 49e are displayed.

Reference numeral 57 in the figure is used to input / output a detection signal from the detection unit 21b of the linear scale 21, a drive control signal of the electric motor 27, a detection signal from the feed amount detector 31, and the like to the control unit 41. Interface.

Next, the method of setting the transfer parameters and the operation of transferring the belt-like work will be described.
First, the method of setting the transfer parameters will be described with reference to FIGS. 5A to 5D. The press operation of the knuckle press machine 3 is performed at the time of a setup change such as a die change for changing a product to be press-formed. Prior to the operation, the transfer length of the band-shaped work 15 set by operating the data setting device 43a of the control box 43 is stored in the feed amount storage area 49a, and the slide work is started from the slide bottom dead center, which is the transfer start teaching timing. The first movement position H1 of the slide 7 is stored in the transfer start slide position storage area 49c, and the second movement position H2 of the slide 7 above the slide bottom dead center, which is the transfer stop teaching timing of the belt-shaped work 15, is the transfer stop slide position. The information is stored in the storage area 49d.

  The first movement position H1 of the slide 7 above the slide bottom dead center that determines the transfer start teaching timing is at a height position where the movable mold 17 is separated from the fixed mold 19 and does not interfere with the fixed mold 19. In addition, the movable mold 17 approaches the fixed mold 19 at the second moving position H2 of the slide 7 above the slide bottom dead center which determines the transfer stop teaching timing of the belt-shaped work 15, and Each is set at a height position where there is no interference.

  The first and second movement positions H1 and H2 are based on the above. However, when there is enough time in the press operation or the transfer operation, or when it is necessary to add another processing step. , May be adjusted according to these.

  In this state, the knuckle press machine 3 is subjected to a test operation prior to the press operation, and when the slide 7 rises from the bottom dead center, the rising height of the slide 7 is determined by a detection signal output from the detection unit 21b of the linear scale 21. The transfer start teaching signal is detected at the timing when the detected height is stored in the slide position storage area 49g, and the rising height stored in the slide position storage area 49g reaches the first movement position H1 stored in the transfer start slide position storage area 49c. (In the present invention, a signal output when the slider 7 reaches the first movement position H1 during the test operation is referred to as a “transfer start teaching signal”. When the slider 7 reaches the first movement position H1 during actual operation, Is generated as a "transfer start signal" to be distinguished from the "transfer start teaching signal"), and the timer 49i is started to start time measurement.

  In the test operation of the knuckle press machine 3 for setting the transfer parameters, the belt-shaped workpiece transfer device 1 is transferred in conjunction with the operation of the knuckle press machine 3 in addition to the mode in which only the knuckle press machine 3 is operated. Any of the modes of operation may be used.

  Thereafter, the slide 7 starts to descend after reaching the top dead center, and stores the descending height of the slide 7 in the slide position storage area 49g according to the detection signal output from the detection unit 21b of the linear scale 21. At the timing when the descending height of the slide 7 stored in the storage area 49g reaches the second movement position H2 stored in the transfer stop slide position storage area 49d, a transfer stop teaching signal (in the present invention, the slider 7 A signal output when the slider 7 reaches the second movement position H2 is a "transfer stop teaching signal", and a signal output when the slider 7 reaches the second movement position H2 during actual operation is a "transfer stop signal". The timer 49i is stopped, and the transfer time T1 between the transfer start teaching signal and the transfer stop teaching signal is measured. It is stored in the transfer time storage area 49e. (See FIGS. 5B and 5C)

Since the movement amount of the slide 7 stored in the slide position storage area 49g is based on the slide bottom dead center, when the slide 7 moves up, the slide movement amount stored in the slide position storage area 49g is sequentially incremented. As a result, the moving direction is determined and the slide moving direction storage area 49h is set to, for example, “1”. Conversely, when the slide 7 descends, the slide moving amount stored in the slide position storing area 49g is sequentially reduced. The movement direction is determined by the increment, and the slide movement direction storage area 49h is set to, for example, “0” and stored.

When a detector such as a limit switch, an optical detector, or a magnetic detector is used as the slide position detecting means, the detector is provided at the bottom dead center and the top dead center of the slide 7, and the slide 7 is moved. Alternatively, the direction of movement of the slide 7 may be detected based on the direction of rotation or the direction of rotation of the crankshaft 9a detected by the rotation angle detection member 13.

Immediately after the start of the test operation of the knuckle press machine 3, the press speed is not constant, so that the elevating speed of the slide 7 becomes unstable, and the transfer time T1 becomes uneven. Transfer time cannot be measured accurately. In order to avoid this, after the start of the test operation of the knuckle press machine 3, the transfer time T1 may be measured at the time of steady operation after a lapse of a fixed time at which the press speed is stabilized. As a method of setting the transfer time T1, as shown in FIG. 5 (A), one time sampling after a steady operation ("steady operation" in the present invention means a state where the press speed is substantially constant). In addition to the method of measuring at the transfer time T1, a plurality of sampled transfer times T1 are sequentially stored in the transfer time storage area 49e, and when the stored plurality of transfer times T1 become constant, the transfer time T1 And a method of measuring the average time of the plurality of transfer times T1 as the transfer time T1.

When the transfer parameter setting button provided in the control box 43 is operated, for example, after the transfer time T1 is measured by the above method, the control means 41 causes the transfer length of the strip-shaped work 15 stored in the feed amount storage area 49a. Then, based on the transfer time T1 stored in the transfer time storage area 49e, transfer parameters such as transfer speed and transfer acceleration / deceleration are calculated and stored in the transfer parameter storage area 49f.

Regarding the transfer acceleration / deceleration in the transfer parameters, when the drive rotating body 27 is rapidly driven to rotate, the belt-shaped work 15 is damaged due to friction between the drive rotating body 27 and the pressing rotating body 35 and the product quality is reduced. However, in order to avoid this, it is desirable to set the transfer acceleration / deceleration lower within the range of the transfer time T1.

Next, a description will be given of the intermittent transfer operation of the strip-shaped work 15 by the transfer parameters set as described above during the actual operation of the knuckle press machine 3. The transfer is performed according to the transfer time T1 measured by the test operation of the knuckle press machine 3 described above. When the parameters are set, the control means 41 outputs an actual operation instruction signal to the knuckle press machine 3 and the strip-shaped workpiece transfer device 1 so that the test operation of the knuckle press machine 3 is stopped and then the actual operation is performed. The electric motor 11 is drive-controlled to move the slide 7 up and down at a predetermined press speed to perform the actual operation, and the electric motor 29 of the strip-shaped workpiece transfer device 1 is stored in the transfer start slide position storage area 49c. Based on the transfer parameters set in response to the transfer start signal output when the first movement position H1 is reached. After the drive control, the belt-shaped work 15 sandwiched between the drive rotating body 27 and the pressing rotating body 35 is transferred toward the fixed mold 19 side of the knuckle press machine 3, and after a predetermined transfer time T1 has elapsed, the drive stop control is performed. Then, the transfer of the band-shaped work 15 is stopped, so that the band-shaped work 15 is transferred with a predetermined transfer length, and the pressed portion is positioned on the fixed mold 19.

At this time, the electric motor 29 is driven and controlled at a transfer speed and a transfer acceleration / deceleration based on the transfer parameters stored in the transfer parameter storage area 49f, so that the belt-shaped work 15 is transferred in a transfer mode corresponding to the press speed. Can be. (See (D) in FIG. 5)

  Note that, when the transfer parameters are set by the test operation of the knuckle press machine 3, the test operation of the knuckle press machine 3 may be stopped and controlled based on the transfer parameter setting completion signal output from the control means 41. . In this case, after that, the control means of the knuckle press machine 3 and the strip-shaped workpiece transfer device 1 are operated to transition to the actual operation, so that the knuckle press machine 3 and the strip-shaped workpiece transfer device 1 are switched to the actual operation and pressed. Perform work.

The timing of stopping the transfer of the electric motor 29 during the actual operation of the knuckle press machine 3 is such that the electric motor 29 responds to the transfer stop signal output when the descending slide 7 reaches the second movement position H2. The driving may be controlled to stop.

Then, the pressing rotary member 35 is separated from the driving rotary member 27 based on the release start signal output from the knuckle press machine 3 at a slightly delayed timing after the output of the transfer stop signal, and the holding of the band-shaped work 15 is released. The movable die 17 is pushed into the fixed die 19 by the slide 7 toward the bottom dead center, and the pressing work of the strip-shaped work 15 is performed.

On the other hand, based on the release release signal output from the knuckle press 3 at a timing slightly earlier than the timing at which the movable mold 17 is separated from the fixed mold 19 by the slide 7 moving upward from the bottom dead center, the pressing rotary body 35 is moved. After pressing the belt-shaped work 15 by pressing against the driving rotator 27, the pressing operation is continuously performed by repeating the above operation.

In the present embodiment, during the test operation of the knuckle press machine 3, the transfer time of the strip-shaped workpiece transfer device 1 is determined by the transfer start teaching signal and the transfer stop teaching signal based on the elevation position of the slide 7 without depending on the rotation angle of the electric motor 11. By measuring T1, it is possible to easily set the transfer parameters according to the press speed.

Reference Signs List 1 strip-shaped work transfer device 3 knuckle press machine 5 as a press machine 5 press machine body 5a linear guide 7 slide 8 knuckle mechanism 9a large diameter gear 9b connecting rod 11 electric motor 13 rotation angle detecting member 15 strip-shaped work 17 movable mold 19 fixed metal Mold 21 Linear scale 21a as slide position detecting means Scale main body 21b Detecting section 23 Guide post 25 Boss 27 Driving rotating body 29 Electric motor 31 Feed amount detector 33 Swing arm 35 Pressing rotating body 37 Pressing operating member 39 Supporting roller 41 Control means 43 control box 43a data setting device 43b display member 45 CPU
47 Program memory 49 Work memory 49a Feed amount storage area 49b Actual feed amount storage area 49c Transfer start slide position storage area 49d Transfer stop slide position storage area 49e Transfer time storage area 49f Transfer parameter storage area 49g Slide position storage area 49h Slide movement direction Storage area 49i Timer 51 Motor drive control means 53 Slide position detection control means 55 Display control means 57 Interface H1 First movement position H2 Second movement position T1 Transfer time

Claims (20)

An electric motor, which is provided in a press machine that presses a belt-shaped work carried in between a fixed mold and a movable mold provided on a slide with reciprocation of the slide, based on a transfer start signal, based on a transfer start signal. In a belt-shaped work transfer device that drives and controls and transfers the band-shaped work sequentially between a fixed mold and a movable mold at a predetermined feed amount,
Slide position detection means for detecting a first movement position of the slide where the movable mold separates from the fixed mold and a second movement position of the slide where the movable mold approaches the fixed mold;
During the test operation of the press machine, the transfer start teaching signal of the belt-shaped work and the slide output at the timing when the slide is moved to the first movement position by the slide position detection means are output at the timing when the slide is moved to the second movement position. Control means for measuring a transfer time between the transfer stop teaching signals of the strip-shaped work, and setting transfer parameters of the strip-shaped work by the electric motor based on the measured transfer time and the transfer length of the strip-shaped work;
A belt-like work transfer device for a press machine equipped with a. In claim 1,
The transfer start signal output during the actual operation of the press machine and the transfer start teaching signal output during the test operation of the press machine are the same as those output from the slide position detecting means at the timing when the slide moves to the first movement position. A strip-shaped workpiece transfer device for a press machine used as a signal. In claim 1,
The control means is a belt-like workpiece transfer device of a press machine for stopping and controlling a test operation of the press machine when a transfer parameter is set based on the measured transfer time. In any one of claims 1 and 3,
The control means is a belt-like workpiece transfer device for a press machine that controls the press machine to switch from a test operation to an actual operation when a transfer parameter is set based on the measured transfer time. In claim 1,
The press machine is a strip-shaped workpiece transfer device of a press machine that is one of a flywheel press machine, a knuckle press machine, a link press machine, and a servo press machine. In claim 1,
The slide position detecting means is provided at least in a length corresponding to a moving distance of the slide, along a moving direction of the slide, and a scale main body provided with a number of scales at equal pitches in a longitudinal direction, and a scale of the scale main body. A band-shaped workpiece transfer device for a press machine, which is a linear scale comprising a detection unit for detecting and outputting a detection signal. In claim 1,
The slide position detecting means is provided at each of the first and second moving positions of the slide, and is any one of a mechanical detector, an optical detector, and a magnetic detector that detects the moving slide and outputs a detection signal. A belt-shaped work transfer device for a press machine. In claim 1,
The measured transfer time is the time between the transfer start teaching signal and the transfer stop teaching signal output with the movement of the slide during steady operation in which the press machine executes a predetermined press speed set in advance. Belt-like work transfer device. In claim 1,
The measured transfer time is obtained by sampling a plurality of times between the transfer start teaching signal and the transfer stop teaching signal output in accordance with the movement of the slide during a steady operation in which the press machine executes a predetermined press speed set in advance. , A belt-like workpiece transfer device of a press machine, which is an average value of a plurality of times sampled. In any one of claims 1 to 9,
The electric motor is controlled to start driving in response to a transfer start signal of the strip-shaped work during actual operation, and then is controlled to stop driving in response to a transfer stop signal of the strip-shaped work. And a belt-like workpiece transfer device of a press machine for transferring between movable dies. In any one of claims 1 to 9,
The electric motor is driven and controlled in response to the transfer start signal of the strip-shaped work during actual operation, and then is driven and stopped based on the transfer parameters set to move the strip-shaped work to a fixed mold and movable at a predetermined transfer length. A belt-like work transfer device for a press that transfers between molds. An electric motor, which is provided in a press machine that presses a belt-shaped work carried in between a fixed mold and a movable mold provided on a slide with reciprocation of the slide, based on a transfer start signal, based on a transfer start signal. When setting the transfer parameters of the belt-like workpiece transfer device that drives and controls the belt-like workpiece sequentially between the fixed die and the movable die at a predetermined feed amount,
(1) Test operation of the press machine prior to press work,
(2) A transfer start teaching signal for the belt-shaped workpiece output at the timing when the movable mold of the slide moves to the first movement position where the movable mold of the slide separates from the fixed mold, and a second signal when the movable mold of the slide approaches the fixed mold. Measuring the transfer time between the transfer stop teaching signal of the strip-shaped work output at the timing of moving to the movement position,
(3) calculating the transfer parameters of the electric motor based on the measured transfer time and the transfer length of the strip-shaped work to set the transfer parameters of the electric motor;
A transfer parameter setting method for a strip-shaped workpiece transfer device, wherein the steps (1) to (3) are sequentially performed. In claim 12,
The transfer start signal output during the actual operation of the press machine and the transfer start teaching signal output during the test operation of the press machine are the same as those output from the slide position detecting means at the timing when the slide moves to the first movement position. A transfer parameter setting method for a band-shaped work transfer device used as a signal. In claim 12,
A method for setting a transfer parameter of a band-shaped work transfer device, the method comprising: controlling stop of a test operation of a press machine when transfer parameters are set based on a measured transfer time. In any one of claims 12 and 14,
A method for setting a transfer parameter of a band-shaped workpiece transfer device, the method including controlling a press machine to switch from a test operation to an actual operation when a transfer parameter is set based on a measured transfer time. In claim 12,
The press machine is a flywheel press machine, a knuckle press machine, a link press machine or a servo press machine. In claim 12,
The first and second moving positions of the slide are provided along the moving direction of the slide at a length corresponding to at least the moving distance of the slide, and a plurality of scales are provided at equal pitches in the longitudinal direction. A method for setting transfer parameters of a strip-shaped workpiece transfer device, which can be detected by a linear scale including a scale main body and a detecting section for detecting the scale of the scale main body and outputting a detection signal. In claim 12,
The first and second movement positions of the slide are provided at the first and second movement positions, respectively, and are a mechanical detector, an optical detector, and a magnetic detector that detect the moving slide and output a detection signal. And a transfer parameter setting method of the belt-like work transfer device which can be detected by any one of the above. In claim 12,
The measured transfer time is the time between the transfer start teaching signal and the transfer stop teaching signal output with the movement of the slide during the steady operation in which the press machine executes a predetermined press speed set in advance. A method for setting transfer parameters of a transfer device. In claim 12,
The measured transfer time is obtained by sampling a plurality of times between the transfer start teaching signal and the transfer stop teaching signal output in accordance with the movement of the slide during a steady operation in which the press machine executes a predetermined press speed set in advance. A method for setting a transfer parameter of a belt-shaped work transfer device as an average value of a plurality of sampled times.

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