JPH06106273A - Thin plate feeding device - Google Patents

Abstract

PURPOSE:To fix the slacking amount of a slacking part of a thin plate. CONSTITUTION:The thin plate is sent to a working part when a servo motor 43 of a feeding mechanism on a working side is started. The feeding amount of the thin plate by the feeding mechanism on the working side is detected by an encoder 46 by which the rotating rate of a pinching roller is detected and the detecting signal is transmitted to a counter 53 of a feeding mechanism on a supplying side. When the detecting signal is transmitted from the encoder 46 of the feeding mechanism on the working side to the counter 53 of the feeding mechanism on the supplying side, a driving signal Sd2 by which a servo motor 38 is driven is transmitted from the counter 53. Thus, when the servo motor 43 on the working side is started, the servo motor 38 on the supplying side is synchronously started and the feeding length of the thin plate sent from the working side to the working part is equal to the feeding length of the thin plate sent from a coiler on the supplying side. Therefore, the slacking amount on the slacking part of the thin plate is always maintained constant.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin plate feeding device for feeding a thin plate from a coil formed by winding a strip-shaped thin plate to a processing apparatus.

[0002]

2. Description of the Related Art When a coil formed by winding a strip-shaped thin metal plate such as a copper strip or a steel strip is used as a supply source and the thin metal plate is sent from the coil to a processing device such as a cutting machine, the coil is generally used. A supply side feed mechanism for rotating and feeding a thin plate from the coil, and a working side feeding device for intermittently feeding the thin plate fed from the coil to a working portion of the working device are provided.

FIG. 3 shows a conventional thin plate feeder. In the figure, 1 is a supply side feed mechanism and 2 is a processing side feed mechanism. The supply side feed mechanism 1 includes a servo motor 4 controlled by the control device 3 and a shaft 5 rotated by the servo motor 4, and a coil 6 is attached to the shaft 5. The thin plate 7 is fed from the coil 6 by rotating the shaft 5 in the direction of arrow A by the servo motor 4.

On the other hand, the machining side feed mechanism 2 includes a servo motor 9 controlled by the controller 8 and the servo motor 9
The feed roller 10 rotated by the
And a pinch roller 11 for sandwiching the thin plate 7 between them and the feed roller 10 is rotationally driven by a servomotor 9 to feed the thin plate 7 in the direction of arrow B.

Here, the thin plate 7 sent out from the coil 6
Is a guide roller 12 provided near the feed roller 10.
The slack is provided in the parts up to and the winding habit is corrected by the slack part 7a.

When the thin plate 7 is fed to the processing device by a certain length in the feeding device having such a configuration, the pulse command Sp corresponding to the length is given to the counter 13 in the control device 8 of the processing side feeding mechanism 2. The counter 13 determines the number of pulses given by the pulse command Sp and the pinch roller 1
The number of pulses input from the encoder 14 that counts the number of rotations of 1 is compared, and the drive signal Sd is output to the D / A converter 15 until the number of pulses from the encoder 14 matches the command pulse number. The D / A converter 15 outputs the voltage command signal Sv1 to the drive circuit 16 when the drive signal Sd is input, and the drive circuit 16 outputs a voltage to the servo motor 9 based on the voltage command signal Sv1. The voltage is applied to drive the servo motor 9 to rotate. The feed roller 10 is rotationally driven by the rotation of the servo motor 9 to feed the thin plate 7.

At this time, since the pinch roller 11 rotates without slipping as the thin plate 7 is moved,
The feed length of the thin plate 7 can be detected by detecting the number of rotations of the pinch roller 11 with the encoder 14. When the number of output pulses from the encoder 14 becomes equal to the number of command pulses, the counter 13 stops outputting the drive signal Sd, and the servo motor 9 is stopped. As described above, the thin plate 7 is first sent in the direction of arrow B by the length corresponding to the pulse command given to the counter 13.

On the other hand, as described above, the processing side feed mechanism 2
Thus, when the thin plate 7 is fed in the direction of the arrow B, the slack portion 7a of the thin plate 7 is pulled, and the amount of slack in the slack portion 7a decreases from the state shown by the solid line in FIG. Then, the arm 17 hung on the slack portion 7a
Rotates in the direction of arrow C from the position shown by the solid line in FIG. The rotation angle of the arm 17 is detected by the potentiometer 18 included in the control device 3 of the supply side feed mechanism 1, and the angle detection signal Sr is amplified by the amplifier 19 and given to the drive circuit 20 as the voltage command signal Sv2. The drive circuit 20 applies a voltage to the servo motor 4 based on the voltage command signal Sv2 to rotationally drive the servo motor 4, and thereby the shaft 5 is rotationally driven to feed the thin plate 7 from the coil 6.

When the thin plate 7 is sent out from the coil 6, the amount of slack in the slack portion 7a increases, and the arm 17 returns to the original position shown by the solid line in FIG. 3 accordingly. Then, the angle detection signal Sr of the potentiometer 18 becomes "0", so that the servomotor 4 is stopped. From the above, the thin plate 7
However, this means that the coil 6 has been sent out by a length substantially equal to the length sent by the processing side feed mechanism 2.

[0010]

However, in the conventional thin plate feeding apparatus having the above-described structure, the processing side feeding mechanism 2 is stopped by the arm 17 returning to the position shown by the solid line in FIG. Therefore, there is no guarantee that the length of the thin plate 7 sent out from the coil 6 by the supply-side feed mechanism 1 is the same as the length of the thin plate 7 sent by the processing-side feed mechanism 2, and the amount of slack in the slack portion 7a is large. In particular, there arises a problem that the arc length L for correcting the winding habit is different depending on the case. Further, even if the processing-side feed mechanism 2 starts to start, the supply-side feed mechanism 1 does not start immediately, so that at this time, the arc length L for correcting the curl in the slack portion 7a becomes considerably short.

The fact that the arc length L in the slack portion 7a becomes long or short and does not become constant means that the curl of the thin plate 7 is uncertainly corrected.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a thin plate feeding device which can always keep the slack amount of a slack portion of the thin plate constant.

[0013]

In order to solve the above problems, a thin plate feeding device of the present invention uses a motor as a drive source and rotates a coil formed by winding a strip-shaped thin plate to feed the thin plate from the coil. A feed side feed mechanism is provided, a motor is used as a drive source, a feed side feed mechanism is provided that feeds the thin plate fed from the coil to a working portion, and a feed side of the thin plate fed by this feed side is detected by the feed side. A feed amount detecting means is provided, and the feed length to be fed by the feed mechanism on the machining side is compared with the feed length detected by the feed amount detecting means on the machining side, and a feed signal is output on the machining side until the two match. Comparing means is provided, and when a drive signal is output from the machining side feed amount comparing means, machining side drive means for driving the motor of the machining side feed mechanism is provided, and the feeding side feed mechanism is used. A feed-side feed amount detecting means for detecting the feed length of the thin plate to be provided is provided, and the feed length detected by the processing-side feed amount detecting means and the feed length detected by the feed-side feed amount detecting means are compared, Supply side feed amount comparison means for outputting a drive signal until both of them coincide is provided, and when the drive signal is output from the supply side feed amount comparison means, a supply side drive means for driving the motor of the supply side feed mechanism. Is provided.

[0014]

When the motor of the processing side feed mechanism is activated, the thin plate is sent to the processing section. The feeding amount of the thin plate by the processing side feeding device is detected by the processing side feeding amount detecting means, and the detection signal is given to the supplying side feeding amount comparing means. The supply side feed amount comparison means outputs a drive signal when a detection signal is given from the processing side feed amount detection means. Therefore, when the motor of the processing side feed mechanism is activated, the motor of the supply side feed mechanism is also activated in synchronization with this.

When the feed length detected by the machining-side feed amount detecting means reaches the length initially set in the machining-side feed mechanism, the mechanism-side feed mechanism stops. In synchronization with this, the feed length detected by the feed-side feed amount detecting means also matches the feed length detected by the processing-side feed amount detecting means, so that the motor of the feed-side feed mechanism also stops. Therefore, the slack amount of the slack portion of the thin plate is always kept constant.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In FIG. 2, which shows an outline of the entire configuration of the apparatus, 31 is a thin plate supply apparatus, 32 is a processing apparatus, for example, a cutting processing machine having a shear 32a as a processing unit.
The thin plate supply device 31 includes a coil 3 formed by winding a thin plate 33.
4 is provided with a feed side feed mechanism 35 for feeding the thin plate 33. In addition, the cutting machine 32 is a thin plate supply device 31.
A pair of guide rollers 36 of the thin plate 33 sent from
The thin plate 33 that has passed through the guide roller 36 is provided with a processing-side feed mechanism 37 that intermittently feeds the thin plate 33 to the shear 32a by a fixed length. When the thin plate 33 is fed from the feeding mechanism 37, the shear 32a performs a cutting operation each time to cut the thin plate 33 into a predetermined size.

Here, the thin plate 33 sent out from the coil 34 reaches the guide roller 36 at a portion thereof.
A slack is provided, and the curl is corrected by the slack portion 33a.

The thin plate feeding device 31 includes the servomotor 3
8 includes a shaft 39 that is rotationally driven by a reduction mechanism (not shown), and the coil 34 is mounted on the shaft 39. Then, when the shaft 39 is rotated in the arrow D direction, the thin plate 33 is sent out from the coil 34. At the outermost periphery of the coil 34, the major roller 4
0 is in contact, and this major roller 40 has coil 3
4 rotation, the rotation length of the outermost periphery thereof, and thus the coil 3
The sheet is rotated by an amount corresponding to the length of the thin plate 33 sent out from No. 4.

An encoder 41 for detecting the number of revolutions of the major roller 40 is connected to the rotary shaft of the major roller 40. This encoder 41 is
The number of rotations of the major roller 40 and the number of pulses proportional to the feeding length of the thin plate 33 from the coil 34 are output. Therefore, the major roller 40 and the encoder 41 are connected to the feed side feed amount detecting means 42. Function as.

The major roller 40 includes a coil 34.
In order to prevent slipping between the coil and the outer peripheral surface, a high friction layer such as rubber is coated on the outer peripheral surface, and the coil 34 is pressed by a pressing mechanism (not shown).
Further, the measure roller 40 is configured so as not to separate from the coil 34 by the action of a pressing mechanism (not shown) even if the diameter of the coil 34 is reduced by feeding the thin plate 33.

On the other hand, the processing side feed mechanism 37 comprises a feed roller 44 rotated by a servo motor 43, and a pinch roller 45 for sandwiching the thin plate 33 between the feed roller 44 and the feed roller 44. 44
The thin plate 33 is fed in the direction of arrow E by rotationally driving.

The rotary shaft of the pinch roller 45 has
An encoder 46 for detecting the number of rotations of the pinch roller 45 is connected. The encoder 46 outputs pulses in a number proportional to the number of revolutions of the pinch roller 45 and thus the feed length of the thin plate 33 by the processing side feed mechanism 27. Therefore, the pinch roller 45 and the encoder 46 are It functions as the supply-side feed amount detecting means 47.

In the present embodiment, the outer diameter of the pinch roller 45 is set to be the same as the outer diameter of the measure roller 40, and thus the pinch roller 45 and the measure roller 40 are set.
The rotation amount is the same for the same feed length of the thin plate 33.

The servo motor 38 of the feeding mechanism 35 and the servo motor 43 of the machining mechanism 37 are
It is controlled by the control devices 48 and 49 shown in FIG.
First, in the control means 49 of the processing side feeding mechanism 37, 5
Reference numeral 0 denotes a counter serving as a machining side feed amount comparing means. A pulse command Sp corresponding to the length to be fed by the machining side feed mechanism 35 is inputted to one of its input terminals, and the other input terminal thereof is The output pulse of the encoder 46 of the pinch roller 45 is input. The counter 50 then counts the number of pulses given by the pulse command Sp and the encoder 46.
The number of pulses input from is compared, and the drive signal Sd1 according to the comparison result is given to the D / A converter 51 until they match. Then, the D / A converter 51 gives a voltage signal Sv1 according to the drive signal Sd1 to a drive circuit 52 as a processing side drive means, and the drive circuit 52 supplies a voltage according to the voltage signal Sv1 to the servo motor 43. Apply.

On the other hand, the control means 48 of the supply side feed mechanism 35
In 53, 53 is a counter as a feed side feed amount comparison means, and an output pulse from the encoder 46 of the pinch roller 45 in the processing side feed mechanism 35 is inputted to one of its input terminals. The output pulse of the encoder 41 of the measure roller 40 is input to the other input terminal of the counter 47. Then, the counter 53 detects the number of pulses input from the encoder 46 and the encoder 4
The number of pulses input from 7 is compared, and the drive signal Sd2 according to the comparison result is compared with the D / A converter 54 until they match.
Give to. Then, the D / A converter 54 outputs the drive signal Sd2
Is supplied to a drive circuit 55 as a supply side drive means, and this drive circuit 55 applies a voltage corresponding to the voltage signal Sv2 to the servomotor 38.

Next, the operation of the above configuration will be described. Shah 3
When 2a operates to cut the thin plate 33, the pulse command Sp is input to the counter 50 of the processing side feed mechanism 37. Then, the drive signal S is sent from the counter 50 to the D / A converter 51.
The output of d1 inputs the voltage signal Sv1 from the D / A converter 51 to the drive circuit 52, so that the servo motor 43 is activated.

When the servo motor 43 is activated, the feed roller 44 rotates to start feeding the thin plate 33 sandwiched between the feed roller 44 and the pinch roller 45 in the arrow E direction. This thin plate 33
Since the pinch roller 43 starts to rotate without slipping as the feeding movement of the thin plate 33 starts, the encoder 46 inputs a number of pulses corresponding to the feeding length of the thin plate 33 to the counter 50 of the processing side feeding mechanism 37. , Is also input to the counter 53 of the supply side feed mechanism 35.

Then, the counter 5 of the supply side processing device 35
Since the drive signal Sd2 is output from the D / A converter 54 to the D / A converter 54, the voltage signal Sv2 is input from the D / A converter 54 to the drive circuit 55, so that the servo motor 38 is activated. Therefore, when the servo motor 43 of the processing side feed mechanism 37 is activated, the servo motor 38 of the supply side feed mechanism 35 is activated in synchronization with this.

When the servo motor 38 is activated,
When the shaft 39 rotates in the direction of arrow D, the coil 34
Also rotates in the same direction to start feeding the thin plate 33. With the rotation of the coil 34, the measure roller 40 starts to rotate without slipping, and the encoder 41 causes the thin plate 3 to rotate.
The number of pulses corresponding to the delivery length of 3 is input to the counter 53.

Therefore, during the feeding operation, the feeding side feeding mechanism 3
The number of pulses corresponding to the feed length of the thin plate 33 to the shear 32a is input to the counter 53 of No. 5 from the encoder 46 of the processing side feed mechanism 37, and also corresponds to the feed length of the thin plate 33 from the coil 34. The same number of pulses are input from the encoder 41, and the servo motor 38 is driven so that the number of pulses from the encoder 41 matches the number of pulses from the encoder 46.

As a result, the feeding length of the thin plate 33 from the coil 34 is controlled so as to always match the feeding length of the thin plate 33 by the feed roller 44, and the slack amount of the slack portion 33a is always kept constant. Will be done.

Then, the thin plate 3 is fed by the processing side feeding mechanism 37.
When 3 is sent by the amount corresponding to the cutting pitch by the shear 33a, the number of output pulses from the encoder 46 of the pinch roller 45 becomes equal to the number of pulses commanded by the pulse command Sp, so that the counter 50 outputs the drive signal Sd1. Stop output. This stops the servo motor 43,
The processing side feeding mechanism 37 ends the feeding operation.

When the machining-side feed mechanism 37 stops, the pulse input from the encoder 46 to the counter 53 of the feed-side feed mechanism 35 disappears, so the counter 53 of the feed-side feed mechanism 37 also stops outputting the drive signal Sd2. Becomes Therefore, in synchronization with the stop of the feeding operation of the processing side feeding mechanism 37, the feeding side feeding mechanism 35 also stops the feeding operation.

As can be understood from the above, the servomotor 38 of the supply side feed mechanism 37 is the
7 rotates in synchronization with the servo motor 43 of No. 7, the servo motor 43 of the machining side feed mechanism 37 is controlled so as not to perform rapid acceleration and deceleration, so that the servo motor 38 of the supply side feed mechanism 37 also rapidly accelerates. Since the control is performed so as not to suddenly decelerate, it is possible to prevent an overload from being applied to the servo motor 38 and its reduction gear (not shown) when the heavy coil 34 is rotated and stopped.

[0035]

As described above, according to the present invention, the motor of the feed side feed mechanism is started and stopped in synchronization with the motor of the processing side feed mechanism, and the motor of the feed side feed mechanism is operated from the coil. Since the feeding length of the thin plate is controlled to be the same as the feeding length of the thin plate by the processing side feeding mechanism, the slack amount of the slack part of the thin plate can always be kept constant, and the curl correction can be guaranteed. It has an excellent effect that it can be carried out.

[Brief description of drawings]

FIG. 1 is a block diagram showing a control configuration in an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing a supply side and a processing side feed mechanism.

FIG. 3 is a schematic configuration diagram showing a conventional feeding device together with a control configuration.

[Explanation of symbols]

32 is a cutting machine, 32a is a shear (machining part), 33 is a thin plate, 34 is a coil, 35 is a feed side feed mechanism, 37 is a machining side feed mechanism, 38 is a servo motor, 39 is a shaft, 40 major rollers, 41 Is an encoder, 42 is a feed side feed amount detecting means, 43 is a servo motor, 44 is a feed roller, 4
5 is a pinch roller, 46 is an encoder, 47 is a feed side feed amount detecting means, 50 is a counter (machining side feed amount comparing means), 52 is a drive circuit (machining side driving means), and 53 is a counter (feed side feeding amount comparison). Means) and 55 are drive circuits (supply side drive means).

Claims (1)

[Claims] 1. A supply side feed mechanism that feeds a thin plate from a coil by rotating a coil formed by winding a strip-shaped thin plate using a motor as a driving source, and a thin plate fed from the coil using a motor as a driving source. Machining side feeding mechanism for feeding to the machining section, machining side feeding amount detecting means for detecting the feeding length of the thin plate fed by this machining side feeding mechanism, feed length to be fed by the machining side feeding mechanism and the machining side feeding amount The machining side feed amount comparing means for comparing the feed length detected by the detecting means and outputting a drive signal until the both agree with each other, and when the drive signal is outputted from the machining side feed amount comparing means, the machining The machining side driving means for driving the motor of the side feeding mechanism, the feeding side feeding amount detecting means for detecting the feeding length of the thin plate fed by the feeding side feeding mechanism, and the working side feeding amount detecting means. The feed length comparison means for comparing the feed length detected by the feed side feed amount detection means with the feed length detected by the feed side feed amount detection means, and outputting a drive signal until they match, and the feed side feed amount comparison means. A feeding device for driving the motor of the feeding mechanism when the driving signal is outputted from the feeding device.