JP2020032468A - Strip-shaped work feeding device of pressing machine - Google Patents

Abstract

To provide a strip-shaped work feeding device of a pressing machine improving workability by making a grip state of strip-shaped work with a movable grip or a fixed grip visible, when working at a position separated from the strip-shaped work feeding device such as when setting up the pressing machine.SOLUTION: A grip state of strip-shaped work with a second grip is display-controlled in a display member on the basis of an operation state of an operation member.SELECTED DRAWING: Figure 2

Description

  INDUSTRIAL APPLICABILITY The present invention is capable of confirming a gripping state of a strip-shaped work by a strip-shaped workpiece feeder attached to a press machine and gripping the strip-shaped workpiece and supplying the strip-shaped workpiece to the press machine. The present invention relates to a belt-like work feeding device.

  On the carry-in side of the press machine, for example, a belt-shaped work feeding device disclosed in Patent Document 1 is attached, and the gripper for gripping and transferring the band-shaped work is reciprocated by a predetermined amount corresponding to the press width with the driving of the electric motor. A predetermined amount of the band-shaped work held by the pressing is sequentially transferred onto a die of a press machine to enable press working.

  In the above-mentioned band-shaped work feeding device, for example, a fixed gripper that can be gripped is provided on the press side, and a movable gripper that moves in a direction approaching and away from the fixed gripper to grip the band-shaped work is provided, The movable gripper holding the band-shaped work is moved to the fixed gripper side at the origin position separated from the fixed gripper from which the work has been released, and the band-shaped work is transferred to the press machine side, and then the band-shaped work is gripped by the fixed gripper. In addition, the movable gripper is released from the original gripping position by releasing the gripping of the band-like work by the movable gripper, and the above operation is repeated to sequentially feed the band-like work at the maximum distance between the fixed gripper and the movable gripper. Is done.

  In the above-mentioned strip-shaped workpiece feeder, when the press work is performed at a high speed, the moving amount of the movable grip is small, and the strip-shaped workpiece is reciprocated at a high speed to transfer the strip-shaped workpiece. It was difficult to visually recognize the grip state (grip release state) of the strip-shaped workpiece by the grip.

In addition, when changing the dies (die and punch) of the press machine, or when replenishing or replacing a band-shaped work, the movable grip is moved by the maximum movement amount that reaches the fixed grip. The movable grip is finely adjusted by inching the movable grip so that the tip of the band-shaped work is positioned at the correct position on the die. However, the movable grip moves to the movement limit position on the fixed grip side. It is necessary to confirm whether or not the movable grip is moving, and to confirm the moving position of the movable grip and the gripping state of the movable grip and the fixed clip during the inching operation.

However, at the time of the above-described setup, the worker operates the portable operation panel (remote controller) or the like at a position where the press machine can be visually recognized, and therefore, at a position where it is difficult to visually recognize the strip-shaped work feeding device. It has been difficult to visually check whether the movable gripper has moved to the movement restriction position, the movement position of the movable grip during the inching operation, and the gripping state of the band-shaped work. In particular, the moving part of the movable gripper — in the belt-shaped workpiece feeder is equipped with a safety cover to ensure safety during work, so the moving state of the movable gripper — Was extremely difficult.

JP-A-2015-20197

  The problem to be solved is that it is difficult to visually recognize the gripping state of the strip-shaped work by the movable grip and the fixed clip when working at a position away from the strip-shaped work feeder, such as when setting up a press machine. is there.

  According to the first aspect of the present invention, at least the second grip is moved toward the first grip in a state where the strip is selectively gripped and released by the first and second grips. A belt-like workpiece feeder for transferring the at least a second grip toward the first grip, a numerically controllable electric motor, and an operating member for gripping the first and second grips, respectively. Grip detection means for detecting the gripping state of the second grip by operating the operating member of the second grip, a display member for displaying at least the gripping state of the second grip based on the operating state of each of the operating members, and an operating state of the operating member Control means for displaying and controlling at least the gripping state of the strip-shaped workpiece by the second grip on the display member based on the The most important feature.

  Advantageous Effects of Invention The present invention can improve workability by making it possible to visually recognize the gripping state of a strip-shaped work by a movable grip and a fixed clip when working at a position away from the strip-shaped work feeding device, such as during setup of a press machine. .

It is a perspective explanatory view which shows the outline of the press machine with which the strip | belt-shaped workpiece | feed device was attached. It is a perspective view showing the outline of a belt-like work sending device. FIG. 3 is a vertical sectional view taken along line AA of FIG. 2. It is an electric block diagram of a control means. It is explanatory drawing which shows the movement state of a movable grip, and the display state of a holding state. It is explanatory drawing which shows the example of a change of a grip moving mechanism. It is explanatory drawing which shows the example of a change of a grip moving mechanism.

  The best mode is to display and control at least the gripping state of the strip-shaped workpiece by the second grip on the display member based on the operating state of the operating member.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, a press machine 3 to which a strip-shaped workpiece feeder 1 according to the present invention is attached has a known structure. For example, a slider 7 is supported on a press machine body 5 so as to be able to move up and down. A punch 11 for punching (press-forming) a product (not shown) having a desired shape from a metal workpiece 9 fed from a coil material wound in a coil shape is attached. A die 13 is attached to the press body 5 so as to face the punch 11.

  A crank mechanism 15 is connected to the slider 7. An electric motor 17 is connected to a crankshaft 15a of the crank mechanism 9 via a flywheel 15b and a clutch 15c. The crankshaft 15a is provided with a rotation angle detecting member 19 for detecting a rotation angle of the crankshaft 15a.

The slider 7 is moved up and down by a predetermined stroke by a crankshaft 15a which rotates with the rotation of the electric motor 17, and a rotation angle detecting member 19 detects a rotation angle of the crankshaft 15a, that is, a rotation amount of the slider 7 corresponding to a vertical movement amount. Output a signal.

The press 3 outputs a release start signal and a release end signal based on the detection signal output from the rotation angle detection member 19. The release start signal is at a timing immediately before the punch 11 approaches the die 13, and the release end signal is at a timing at which the punch 11 separates from the die 13 and separates from the punched hole of the strip-shaped workpiece 9 from which the product has been punched. Each is output.

Further, reference numeral 21 in the drawing denotes a guide post provided on the die 13 having an axis in the up-down direction, and 23 is provided on the punch 11. When the slider 7 is lowered, the guide post 21 is inserted and fitted. A guide bush for positioning the dies 13 relative to each other.

On the loading side (left side in the drawing) of the press machine main body 5, a strip-shaped work feeding device 1 is attached. The main body 25 of the strip-shaped workpiece feeding device 1 has an axis in a horizontal direction orthogonal to the vertical direction of the slider 7, and a pair of guide shafts 27 having a predetermined length in the axial direction are laid horizontally. A fixed gripper 29 as a first gripper is fixed to the press 3 side. A movable gripper 31 as a second gripper is supported by the guide shaft 27 so as to be movable in the axial direction.

The fixed gripper 29 is vertically moved with respect to a support member 29a fixed to the guide shaft 27 and a pair of upper and lower guide shafts 29b having an axis in a vertical direction and having lower ends fixed to the support member 29a. A gripping member 29c that is pivotally supported and a fixed-side operating member 29d, such as an electromagnetic solenoid or an air cylinder, provided on the support member 29a and having a plunger connected to the fixed gripping member 29c. The fixed gripper 29 grips the belt-like work 9 transferred to the upper surface of the support member 29a in a non-transportable manner by a holding member 29c that moves downward by the operation of the fixed-side operating member 29d.

The movable gripper 31 includes a support member 31a that is supported so as to be movable in the axial direction with respect to the guide shaft 27, and a pair of upper and lower guides that have an axis in the vertical direction and have lower ends fixed to the support member 31a. A movable member such as an electromagnetic solenoid or an air cylinder, which is provided on the support member 31a and is supported by the support member 31a and whose plunger is connected to the grip member 31c so as to be vertically movable with respect to the shaft 31b. And a member 31d. The movable gripper 31 grips the belt-like work 9 transferred to the upper surface of the support member 31a in a non-transportable manner by a gripping member 31c that moves downward by the operation of the movable-side operating member 31d.

When the operating members 29d and 31d are not operated, the fixed gripper 29 and the movable grip 31 use a built-in elastic member such as a compression spring to hold the corresponding supporting members 29a and 31a with the corresponding grip members 29c and 31a. The strip 31c is urged in the separating direction to keep the strip-shaped work 9 in the non-gripping state. Conversely, when the respective operating members 29d, 31d are not operated, the corresponding gripping members 29c, 31c are urged toward the respective supporting members 29a, 31a in a direction approaching by the built-in elastic members such as tension springs. Alternatively, a configuration may be employed in which the belt-like work 9 is held in a gripping state, or the respective operating members 29d and 31d are operated in accordance with gripping and non-grip of the belt-like workpiece 9.

In addition to the elastic members built into the respective operating members 29d and 31d, the vertical opening shafts 29b and 31b located between the support members 29a and 31a and the grip members 29c and 31c are provided with elastic members such as compression springs. It is also possible to adopt a configuration in which the operating members 29d and 31d are kept in a non-grip state when the operating members 29d and 31d are not operated by the elastic force of these elastic members.

The main body 25 is provided with moving means 35 for moving the movable gripper 31 between a position close to the fixed gripper 29 and an origin position separated from the fixed gripper 29. The moving means 35 includes a pair of rotating bodies 35a such as toothed pulleys rotatably supported on the fixed grip 29 side and the origin position side, respectively, and a numerically controllable servo drive-coupled to one rotating body 35a. It is composed of an electric motor 35b such as a motor, and a traveling member 35c such as a timing belt which is wound around a pair of rotating bodies 35a and partially fixed to the support member 31a of the movable gripper 31.

The electric motor 35b is provided with a position detector 35d such as a rotary encoder, and the moving position and the moving amount of the movable grip 31 are detected based on a detection signal from the position detector 35d. An origin detector (not shown) for detecting that the movable grip 31 has been moved to the origin position is provided at the origin position of the movable grip 31.

Further, in addition to the above-described configuration, the transfer means 35 has an axis in a direction coinciding with the movement direction of the movable grip 31, and has a feed screw (not shown) meshed with a nut (not shown) provided on the movable grip 31. The movable grip 31 may be moved by controlling the rotation of an unillustrated electric motor (not shown) by an electric motor (not shown).

The main body 25 is provided with an operation box 37 in which a control means 36 is built. The control means 36 discriminates and controls the moving position and the moving amount of the movable grip 31 based on the number of detection signals from the position detector 35d, and fixes based on ON-OFF of the fixed side operating member 29d and the movable side operating member 31d. The gripping state of the strip-shaped work 9 by the grip 29 and the movable grip 31 is determined.

Various switches 37a such as a power switch, a start switch, an emergency stop button, a work feed button, a transfer amount setting button, and a setup button are provided on the panel of the operation box 37, and the moving state and the gripping state of the movable gripper 31 in the movable grip side area. , A movable display portion 37b made of a liquid crystal (LCD) for displaying a graphic image, and an intermediate area display made of a liquid crystal (LCD) for displaying a moving state and a gripping state of the movable gripper 31 in a moving intermediate area of the movable grip 31 with respect to the fixed gripper 29. The fixed side display 37d made of liquid crystal (LCD) for graphically displaying the gripping state of the fixed grip 29 and the moving state and the gripping state of the movable grip 31 in the area 37c and the fixed grip side area, and the moving amount of the movable gripper 31 with respect to the origin position. Movement amount table to display numerically Section 37e and the like are provided.

The control means 36 displays a graphic image of the movable grip 31 and a belt-like shape by the fixed grip 29 and the movable grip 31 on the movable display 37b, the intermediate area display 37c, and the fixed display 37d based on the determined moving state of the movable grip 31. The display control of a graphic image indicating the grip state of the work 9 is performed.

As a graphic display mode showing the moving state of the movable grip 31 in the movable display section 37b, the intermediate area display section 37c, and the fixed display section 37d, the moving amount of the movable grip 31, for example, increasing or decreasing the number of images of the movable grip 31 every 10 mm As a graphic display mode showing the moving position and the moving amount by displaying the moving grip 31 and the gripping state by the movable grip 31, an image of the gripping member is additionally displayed above the image of the movable grip 31 to display the gripping state.

The graphic display mode indicating the moving state of the movable grip 31 in the movable side display section 37b, the intermediate area display section 37c, and the fixed side display section 37d is not limited to the above, and the moving amount and the movement of the movable grip 31 Any image may be used as long as it is an image suitable for displaying the position and the presence or absence of grasping.

The axes of the main body 25 on the opposite side of the press machine 3 are parallel to each other for guiding the band-like work 9 unwound from a coil material (not shown) in which the band-like work 9 is wound in a coil shape to the movable grip 31. A plurality of guide rollers 38 are rotatably supported.

As shown in FIG. 4, the processing means 40 of the control means 36 is provided with a program data storage means 39 and a work data storage means 41. The program data storage means 39 has program data for executing the transfer of the band-like work 9, a movable gripper. Display program data for displaying a moving state of the band 31 and a gripping state of the band-shaped work 9 by the fixed gripper 29 and the movable gripper 31 are stored.

The work data storage means 41 has a counter area 41a for storing the number of detection signals from the position detector 35d, and image data for storing graphic data indicating the moving state of the movable gripper 31 and the gripping state of the fixed gripper 29 and the movable gripper 31, respectively. The calculation is performed based on the number of detection signals stored in the display area 41c for storing the display state of the graphic data in the storage area 41b, the movable-side display section 37b, the intermediate area display section 37c, and the fixed-side display section 37d, and the counter area 41a. The moving amount storage area 41d for storing the moving amount of the movable gripper 31, the gripping memory for storing the gripping state of the fixed gripper 29 and the movable gripper 31 based on the ON-OFF state of the fixed-side operating member 29d and the movable-side operating member 31d. The area 41e is set by the transfer amount setting button switch 37a. And a transfer amount storage area 41f for storing the transfer amount of the strip-shaped workpiece 9 which is.

The processing means 40 includes a release start signal and a release release signal output from a control means (not shown) of the press machine 3 based on signals from the position detector 35d and the rotation angle detecting member 19, and a fixed-side operating member 29d. And, a grip signal based on ON / OFF of the movable side operation member 31 d is input via the input / output means 43.

The display control means 45 is provided in the processing means 40, and the display control means 45 determines the moving state of the movable grip 31 based on the number of detection signals stored in the counter area 41a and the fixed grip 29 based on the grip storage area 41e. The grip state of the movable grip 31 is graphically displayed on the movable display section 37b, the intermediate area display section 37c, and the fixed display section 37d. Further, the display control means 45 causes the movement amount display section 37e to numerically display the movement amount of the movable grip 31 stored in the movement amount storage area 41d.

The processing means 40 is provided with an operating member control means 47, which operates on the basis of the release start signal and the release release signal outputted from the control means of the press machine 3 and the fixed side operation member 29d and the movable side operation member. The members 31d are turned on and off, respectively, to grip the band-like work 9 by the fixed grip 29 and the movable grip 31, and to release the grip.

The processing means 40 is provided with a motor control means 49. The motor control means 49 drives the electric motor 35b by operating a switch 37a such as a start switch, an emergency stop button, and a work feed button to transfer the belt-like work 9.

Next, the operation of the belt-shaped workpiece feeding device 1 configured as described above will be described. First, the operation of setting the belt-shaped workpiece 9 on the press machine 3 will be described. 9 is passed through the gap between the support member 31a and the gripping member 31c of the movable grip 31 and the gap between the support member 29a and the gripping member 29c of the fixed grip 29, respectively, and the upper surface of the press body 5 of the press machine 3 Withdraw to At this time, the operator works on the press machine 3 side away from the belt-like work feeding device 1 to visually check the setting state of the band-like work 9 in the press machine 3.

In this state, when the setup switch 37a of the operation box 37 is turned on, the band-like work 9 is first gripped by the fixed grip 29 by the gripping member 29c which operates the fixed-side operating member 29d and moves down, and the movable-side operating member 31d. Is held in a non-operating state and the movable grip 31 is moved to the origin position on the opposite side of the press machine 3 in a state where the grip of the strip-shaped work 9 by the movable grip 31 is released. The band-like work 9 is grasped by the movable grip 31 by moving down the movable grip 31 and the fixed-side operation member 29d is deactivated to release the grasping of the band-like work 9 by the fixed grip 29 by the grasping member 29c moving up.

When the work feed button of the operation box 37 is turned on in the above state, the electric motor 35b is driven to move the movable grip 31 gripping the strip-shaped work 9 toward the fixed grip 29 and move the maximum width (fixed grip 29). After moving the belt-like work 9 by the above-mentioned movement amount by moving the movable grip 31 with the maximum separation width of the movable grip 31, the movement is stopped at a position close to the fixed grip 29.

Then, when the movable grip 31 is moved to the movement restriction position close to the fixed grip 29, the movable side operating member 31d of the movable grip 31 is deactivated, and the gripping of the band-like work 9 is released by the upwardly moving gripping member 31c. At the same time, the band-like work 9 is gripped by the gripping member 29c that moves downward by operating the fixed-side operating member 29d of the fixed grip 29, and the holding operation of the band-like work 9 is performed.

When the movable grip 31 is moved, the movable side display portion 37b, the intermediate region display portion 37c, and the fixed side display portion 37d of the operation box 37 are based on signals from a position detector 35d provided on the electric motor 35b. For example, every time the moving amount counted reaches 10 mm, a graphic image representing the gripping member 31c and the movable grip 31 is sequentially displayed with the movement of the movable grip 31, and the moving position and the moving amount of the movable grip 31 are displayed. At the same time, the moving amount of the movable grip 31 is numerically displayed on the moving amount display section 37e. (See Fig. 5)

For example, a maximum of five graphic images are sequentially displayed on each of the movable side display part 37b, the intermediate area display part 37c, and the fixed side display part 37d, and the movable grip 31 is displayed based on the number of displayed consecutive graphic images. The approximate position of the current position and the amount of movement are displayed. When the belt-like work 9 is not gripped by the movable grip 31, a graphic image of only the movable grip 31 is displayed.

Also, when finely adjusting the feed position of the band-shaped work 9 by slightly moving the movable grip 31 with respect to the fixed grip 29 (inching feed, inching feed), similarly to the above, each movable side display of the operation box 37 is performed. Graphic images are sequentially displayed on the portion 37b, the intermediate region display portion 37c, and the fixed side display portion 37d to display the moving position and the moving amount of the movable grip 31.

Accordingly, when the movable grip 31 is moved to the movement restriction position on the fixed grip 29 side or when performing inching feed on the way to the fixed grip 29, the worker determines the movement position and the movement amount based on the number of displayed graphic images. It is possible to visually confirm the moving state of the movable grip 31 and the grip state of the strip-shaped work 9.

When the tip end of the band-shaped work 9 is not transferred in a regular state with respect to the press machine body 5 in a state where the movable grip 31 is moved to the movement restriction position, and it is necessary to transfer the band-shaped work 9 by a maximum transfer amount. When the work feed button 37a of the operation box 37 is turned ON by the operator, the belt-like work 9 is gripped by the fixed grip 29 so as to be immovable, and the belt-like work 9 is driven by the reverse rotation of the electric motor 35b. The movable grip 31 released from the grip is returned to the origin position, and the belt-like work 9 is held by repeating the above operation. Then, the movable grip 31 is moved to the fixed grip 29 side to transfer the belt-like work 9 to the press machine 3 side. .

In addition, when the movable grip 31 is not moved to the fixed grip 29 side, the leading end of the strip-shaped work 9 is not transferred to the press machine body 5 in a regular state, and it is necessary to further transfer the strip-shaped work 9 minutely. In some cases, the operator performs ON / OFF operation of the work feed button 37a of the operation box 37 to slightly move the movable grip 31 gripping the strip-shaped work 9 to the fixed grip 29 side to feed the strip-shaped work 9 by inching. The strip-shaped workpiece 9 is transferred to the press body 5 so as to be in a normal state.

When the movable grip 31 returns to the origin position, the movable grip displayed on the fixed side display part 37d, the intermediate area display part 37c, and the movable side display part 37b of the operation box 37 with the movement of the movable grip 31 with respect to the origin position. The moving position of the movable grip 31 and the moving amount of the movable grip 31 are displayed while the graphic images of 31 are not displayed in order, and the moving amount of the movable grip 31 is numerically displayed on the moving amount display section 37e.

On the other hand, in order to press the strip-shaped work 9 transferred in a state in which the tip is positioned on the press machine main body 5 in a normal state, the transfer amount of the strip-shaped work 9 is set by the transfer amount setting button 37a of the operation box 37. When the start switch 37a is later turned ON, first, the fixed-side operating member 29d is operated to grip the band-shaped work 9 between the supporting member 29a and the supporting member 29a by the fixed grip 29 while the movable-side operating member 31d is turned off. The movable side which is operated after returning the movable grip 31 to the home position opposite to the press 3 by the electric motor 35b driven in a state where the grip of the strip-shaped work 9 by the movable grip 31 is released while maintaining the operation state. The movable workpiece 31 is gripped by the movable grip 31 by the operating member 31d, and the fixed-side operating member 29d is deactivated by the fixed grip 2. By releasing the grip of the strip-shaped workpiece 9 (grasp re) make.

After the above operation, when the movable grip 31 holding the band-shaped work 9 is moved by the set transfer amount to the fixed grip 29 side by controlling the drive of the electric motor 35b, the gripping of the band-shaped work 9 by the movable grip 31 is released. At the same time, after the band-shaped work 29 is gripped by the fixed grip 29, the punch 11 provided on the slider 7 which descends as the press machine 3 is driven is output from the press machine 3 at the timing when the punch 11 approaches the surface of the band-shaped work 9. The fixed side operating member 29d is deactivated by the release signal to release the grip of the band-shaped work 9 by the fixed grip 29. (The non-grip state of the strip-shaped work 9 by the movable grip 31 is maintained.)

After a product (not shown) is punched out of the band-like work 9 by the punch 11 entering the die 13, the slider 7 moves from the bottom dead center to the top dead center after the punch 7 is pulled out of the die-cut hole of the band-like work 9. When the release release signal is output from the press machine 3 at the timing, the fixed-side operating member 29d is operated to cause the fixed grip 29 to grip the band-shaped work 9 and to keep the movable grip 31 in the state where the band-shaped work 9 is released. After the movable grip 31 is returned to the origin position on the side opposite to the press machine 3 by the driven electric motor 35b, the movable workpiece 31 is gripped by the movable grip 31 and the fixed-side operating member 29d is gripped by the movable grip 31d. Is deactivated, the gripping of the band-shaped work 9 by the fixed grip 29 is released (grabbed back), and Ri the next order of the press portion in the strip-shaped workpiece 9 is positioned on the die 13 and transported in the transport amount that has been set to the strip-shaped workpiece 9 by flashing.

Even at the time of the above-described press working, the moving position, the moving amount, and the holding state of the movable grip 31 are displayed on each of the movable side display section 37b, the intermediate area display section 37c, and the fixed side display section 37d of the operation box 37. The moving amount of the movable grip 31 is numerically displayed on the moving amount display section 37e, and the moving state and the gripping state of the movable grip 31 can be visually recognized by the operator.

In the present embodiment, the movable grip 31 displayed on each of the display units 37b, 37c, and 37d of the operation box 37 in a place where it is difficult for the operator to confirm the moving state of the movable grip 31, for example, when performing a setup operation. The moving state of the movable grip 31 with respect to the movement-restricted position and the moving state of the movable grip due to inching feed can be visually confirmed from the graphic image, thereby making it possible to smoothly carry out the work of transferring the strip-shaped work.

In the above description, the belt-like work 9 is transferred by moving the movable grip 31 toward and away from the fixed grip 29 fixed to the press machine 3 side of the main body 25. The means for transferring the work is not limited to the structure in which the first grip is fixed like the fixed grip 29, and may be provided on one side of the traveling member 35c spanned by the pair of rotating bodies 35a as shown in FIG. The first grip 51 is attached to the other side, and the second grip 53 is attached to the other side. The first and second grips 51 and 53 are moved in a direction toward and away from each other by a traveling member 35c that travels with the driving of the electric motor 35b. Alternatively, a structure for transferring the belt-like work 9 may be used.

In the transfer means of this structure, when the electric motor 35b is driven in a state in which the band-like work 9 is gripped by the second grip 53 moved to a position separated from each other and the grip by the first grip 51 is released. After the belt-like work 9 was transferred to the middle part of the traveling member 35c by the second grip 53 moving toward each other, the grip of the belt-like work 9 by the second grip 53 was released, and the belt-like work 9 was gripped by the first grip 51. In this state, the electric motor 35b may be driven to rotate in the reverse direction to move the first and second grips 51 and 53 in a direction away from each other to further transport the strip-shaped work 9.

In this case, a display unit may be provided for each of the first and second grips 51 and 53, and the corresponding display unit may display the moving state and the gripping state of each grip and make them visible.

Further, as a transfer means of the belt-like work 9 in the present invention, as shown in FIG. 7, a second grip 61 is fixed to a traveling member 35c which is suspended between a pair of rotating bodies 35a to which an electric motor 35b is connected. A first grip 67 is fixed to a traveling member 65c which is suspended between a pair of rotating bodies 65b, one of which has an electric motor 65a connected to one of the first transporting means 63 in the same configuration as the first transporting means 63. The second transfer means 65 is arranged adjacent to the straight line, and the corresponding first and second grips 61, 67 of each of the first and second transfer means 63, 65 are moved to the side opposite to the press machine 3. In the state where the band-like work 9 is gripped by the second grip 61 and the gripping of the band-like work 9 by the first grip 67 is released, first, the electric motor 35 is driven to move the second grip 61 to the first grip. After moving to the side of the press 67, the gripping of the strip-shaped work 9 by the second grip 61 is released, and the electric motor 65 a is driven while the strip-shaped work 9 is gripped by the first grip 67, and the first grip 67 is pressed by the pressing machine 3. It may be configured to move to the side and transfer the strip-shaped work 9.

Also in this example, a display unit may be provided for each of the first and second grips 67, 61, and the corresponding display unit may display the moving state and the gripping state of each of the grips 61, 67 and make them visible.

In the above description, the graphic position of the movable grip 31 is sequentially displayed on the fixed side display part 37d, the intermediate area display part 37c, and the movable side display part 37b of the operation box 37, and the moving position and the moving amount of the movable grip 31 are displayed. However, for example, a plurality of movement display lamps are provided according to a predetermined amount of movement of the movable grip 31, and a grip display lamp is provided corresponding to each display lamp, and based on the movement state and the grip state of the movable grip 31, The moving state and the holding state of the movable grip 31 may be visually recognized by controlling the lighting of each of the movement indicating lamp and the holding indicating lamp.

In the above description, the operation box 37 is provided with the movable side display section 37b, the intermediate area display section 37c, the fixed side display section 37d, and the movement amount display section 37e, and the respective display sections 37b, 37c, 37d as the movable grip 31 moves. The moving state of the movable gripper 31 and the gripping state of the fixed grip 29 and the movable grip 31 are graphically displayed, and the moving amount of the movable grip 31 is numerically displayed on the display 37e. A portable operation box (not shown) provided with the side display unit, the intermediate area display unit, and the fixed side display unit is connected by wire or wireless, and the moving state of the movable grip 31 and the fixed grip 29 are connected to these display units. A configuration may be adopted in which the grip state of the movable grip 31 is displayed graphically and can be checked.

In the above description, a display member is provided in the portable operation box 37 to display the moving state of the movable grip 31, the grip state of the strip-shaped work 9, and the grip state of the strip-shaped work 9 by the fixed grip 29. A display member such as an LED may be attached to the movable grip 31, specifically, the support members 29a and 31a of the fixed grip 29 and the movable grip 31, so that the movable grip 31 can be visually recognized.

DESCRIPTION OF REFERENCE NUMERALS 1 strip work feeding device 3 press machine 5 press machine main body 7 slider 9 band work 11 punch 13 die 15 crank mechanism 15a crank shaft 15b flywheel 15c clutch 17 electric motor 19 rotation angle detecting member 21 guide post 23 boss 25 main body 27 Guide shaft 29 Fixed gripper 29a as first gripper Support member 29b A pair of upper and lower guide shafts 29c Holding member 29d Fixed side operating member 31 Movable gripper 31a as second gripper Support member 31b A pair of upper and lower guide shafts 31c Holding member 31d Movable side Operating member 35 Moving means 36 Control means 35a A pair of rotating bodies 35b Electric motor 35c Traveling member 35d Position detector 37 Operation box 37a Various switches 37b Movable display 37c Intermediate area display 37d Fixed display 37e Moving amount table Part 38 guide roller 39 program data storage means 40 processing means 41 work data storage means 41a counter area 41b image data storage area 41c display storage area 41d movement amount storage area 41e gripping storage area 41f transfer amount storage area 43 input / output means 45 display control Means 47 Actuating member control means 49 Motor control means 51 First grip 53 Second grip 61 Second grip 63 First transfer means 65 Second transfer means 65a Electric motor 65b A pair of rotating bodies 65c Running member 67 First grip

In addition, when changing the dies (die and punch) of the press machine, or when replenishing or replacing a band-shaped work, the movable grip is moved by the maximum movement amount that reaches the fixed grip. The movable grip is finely adjusted by inching the movable grip so that the tip of the band-shaped work is positioned at the correct position on the die. However, the movable grip moves to the movement limit position on the fixed grip side. It is necessary to confirm whether or not the movable grip is moving or to check the moving position of the movable grip and the gripping state of the movable grip and the fixed grip during the inching operation.

However, at the time of the above-described setup, the worker operates the portable operation panel (remote controller) or the like at a position where the press machine can be visually recognized, and therefore, at a position where it is difficult to visually recognize the strip-shaped work feeding device. It has been difficult to visually check whether the movable gripper has moved to the movement restriction position, the movement position of the movable grip during the inching operation, and the gripping state of the band-shaped work. Particularly, since a safety cover is attached to the moving part of the movable gripper in the belt-shaped work feeding device in order to ensure safety during work, it is extremely difficult to visually check the moving state of the movable gripper .

The problem to be solved is that it is difficult to visually recognize the gripping state of the strip-shaped workpiece by the movable grip and the fixed grip when working at a position away from the strip-shaped workpiece feeder, such as when setting up a press machine. is there.

Advantageous Effects of Invention The present invention can improve the workability by making it possible to visually recognize the gripping state of a strip-shaped work by a movable grip and a fixed grip when working at a position away from the strip-shaped work feeding device, such as during setup of a press machine. .

Claims (8)

A belt-shaped work attached to a press machine and moving at least the second grip toward the first grip and transferring the band-shaped work to the press machine in a state where the band-shaped work is selectively gripped and released by the first and second grips. In the feeder,
A numerically controllable electric motor that moves at least the second grip toward the first grip;
An operating member that grips the first and second grips, respectively;
Grip detection means for detecting a grip state of the second grip by operation of at least an operation member of the second grip;
A display member for displaying at least a grip state of the second grip by an operation state of each of the operation members,
Control means for displaying on the display member at least the grip state of the band-shaped workpiece by the second grip based on the operation state of the operation member;
A strip-shaped workpiece feeder for a press machine equipped with a. In claim 1,
The display member is provided with a plurality of grip display lamps indicating the gripping state of the band-shaped workpiece by the second grip, and controls the lighting of the grip display lamps with the movement of the second grip so that the grip state of the second grip can be visually recognized. Machine belt feeder. In claim 1,
The display member is provided with a plurality of grip display lamps indicating a grip state of the band-shaped workpiece by the second grip at least for every predetermined amount of movement of the second grip, and controls the lighting of each grip display lamp with movement of the second grip. A strip-shaped workpiece feeding device for a press machine, wherein a gripping state of a second grip can be visually recognized. In claim 1,
A portable operation box provided with a display member for displaying a grip state of the first and second grips according to an operation state of each operation member is connected to the control means either by wire or wirelessly,
A strip-shaped workpiece feeder for a press machine, wherein a display member of the portable operation box can display a grip state of the first and second grips according to an operation state of each operation member. In claim 1,
A strip-shaped workpiece feeding device for a press machine, wherein first and second grips are provided with LEDs for indicating respective gripping states. In claim 1,
The first gripper is fixed to the press machine side, and the second gripper is supported so as to be able to reciprocate in a direction approaching and moving away from the first gripper. The second gripper holding the band-shaped work is moved toward the first gripper in a state where the gripping of the band-shaped work by the gripper is released, and the band-shaped work is held by the first gripper when returning the second gripper to the origin position. A strip-shaped workpiece feeder of a press machine that moves the second gripper, from which gripping of the strip-shaped workpiece has been released, to an origin position. In claim 1,
The electric motor is rotatably supported at an interval corresponding to the maximum transfer distance of the strip-shaped work, and is connected to one of a pair of rotating bodies around which the traveling member is stretched,
The first gripper is fixed to one side of the running traveling member, and the second gripper is fixed to the other side of the traveling member.
A strip-shaped workpiece feeder for a press machine, wherein a strip-shaped workpiece can be transferred by moving a first and a second gripper in a direction away from each other and in a direction approaching each other by a traveling member that travels in accordance with forward and reverse driving of an electric motor. In claim 1,
The first gripper is rotatably supported at an interval corresponding to the maximum transfer distance of the strip-shaped workpiece, and is provided with a pair of rotating members having an electric motor connected to at least one of the pair of rotating members, and a first transfer unit having a traveling member. While being fixed to the traveling member,
The second gripper is linearly disposed adjacent to the first transfer means, rotatably supported at an interval corresponding to a maximum transfer distance of the strip-shaped work, and an electric motor is connected to at least one of the second grippers. Fixed to the traveling member of the second transfer means in which the traveling member is suspended over the pair of rotating bodies,
A strip-shaped workpiece of a press machine in which the first and second grippers are moved in a direction away from each other and in a direction approaching each other by a traveling member that travels in accordance with the driving of each electric motor so that the strip-shaped workpiece can be transferred at a maximum transfer distance. Feeder.

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