JPH0545332B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a coil material feeding device that feeds coil material (coiled processed material) to a press device, and more specifically, a coil material feeding device that feeds coil material (coiled processed material) to a press device. The present invention relates to a coil material feeding device capable of stably feeding coil material to the device without increasing the size of the feeding device.

[Technical background of the invention]

2. Description of the Related Art Conventionally, a coil material feeding device is known that unwinds a coil material wound around an uncoiler, smooths the material, and then feeds the smoothed material to a press device. This kind of coil material feeding device generally unwinds the coil material wound around the uncoiler using pinch rolls, feeds it to the leveler, smooths it with the leveler, and then feeds it to the feeder. The sent coil material is fed to the subsequent press device at a timing synchronized with the machine cycle of the press device.

By the way, in the case of this type of coil material feeding device, it is the feeder that ultimately feeds the material to the press device, and the press device performs intermittent operations according to the crank angle of its drive mechanism. Therefore, as a feeder, it is necessary to feed the coil material intermittently at a timing synchronized with the machine cycle of this press device. On the other hand, in addition to feeding the long coil material, the leveler also smooths the coil material, so the load on the leveler is much greater than the load on the feeder, and the motor for driving the leveler is required to be large. Even if a leveler is used, its responsiveness is inferior to that of a feeder, and it cannot be adapted to high-speed operation unless the response delay of the leveler is overcome. Therefore, in order to adapt to high-speed operation, conventional seed feeding devices run the feeder intermittently in accordance with the machine cycle of the press device, while the leveler is always moved at a constant speed (the feeder runs at a constant speed within one machine cycle of the press device). By running the feeder at a speed that matches the feed rate of the leveler and the feed rate of the leveler, the response delay of the leveler can be eliminated. It absorbs the large changes in the amount of deflection of the coil material due to intermittent operation.

However, if the leveler is always run at a constant speed as described above, it is possible to prevent the overall speed of the device from slowing down due to the response delay of the leveler. Because the width becomes extremely large, unless the feeding path of the coil material from the leveler to the feeder is made sufficiently large, the amount of deflection of the coil material will exceed its elastic recovery limit, so it is necessary to avoid increasing the size of the entire device. There was something I couldn't do.

[Purpose of the invention]

The present invention was made in view of the current situation, and its purpose is to provide a coil material that is compatible with high-speed operation and that can shorten the feeding path from the leveler to the feeder and downsize the entire device. This will provide a feeding device for the following.

[Summary of the invention]

In summary, the coiled material feeding device of the present invention includes: an uncoiler that rotatably supports a material plate that has been previously wound into a coil; a coiled material plate that has an independent power source and is supported by the uncoiler; a coil material feeding means that feeds out the material plate from the uncoiler at a constant speed; has an independent power source and intermittently feeds the material plate fed from the uncoiler by a predetermined amount necessary for one press operation at a timing synchronized with the operating timing of the press device; a leveler that has an independent power source and smoothes the material plate by the leveler by a predetermined amount necessary for one press operation at a timing synchronized with the operation timing of the presser; a feeder that intermittently feeds the press device at a feed rate faster than the feed rate; A first arcuate portion having a center of curvature on one side of the feed path and a second arcuate portion having a center of curvature on the other side of the feed path are continuous, and the first arcuate portion has a center of curvature on the other side of the feed path. The material plate smoothed by the leveler is supported in a swinging manner with a mutually continuous point between the first arcuate portion and the second arcuate portion as a pivot axis, and the material plate smoothed by the leveler is moved between the first arcuate portion and the second arcuate portion. a feeding guide that feeds the feeder along a second arcuate portion; and the feeding guide is directed toward a side opposite to the center of curvature of each of the first arcuate portion and the second arcuate portion; By providing a biasing means for biasing, it is possible to suppress the increase or decrease in the amount of deflection of the coil material in the feeding path between the leveler and the feeder, and to feed in an S-shape in response to the increase or decrease in the amount of deflection of the coil material. By moving the guide in a tracing manner, the length of the feeding path from the leveler to the feeder can be shortened, making it possible to downsize the entire device.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

First, FIG. 1 is a mechanical diagram showing an outline of a coil material feeding device according to an embodiment of the present invention.

In the figure, 1 is a frame, 2 is an uncoiler, 3 is a coil material wound around the uncoiler 2, and 4 is a coil material 3
5 is a leveler that removes the curl of the coil material fed out by the pinch roll 4 and smooths it; 6 is a leveler that smoothes the coil material 3 that has been smoothed by the leveler 5. Each feeder is shown intermittently feeding at a timing synchronized with the machine cycle of a subsequent press device (not shown).

Next, the configuration and use of each of the above elements will be explained in detail.

First, an uncoiler 2 is rotatably supported on a frame 1, and a coil material 3 is wound around the uncoiler 2.

Further, the pinch roll 4 includes a driving roll 41, a driven roll 42, a pinch roll drive motor 43, power transmission belts 44, 45, and pulleys 46, 47. The drive roll 41 is rotatably supported by the frame 1 with its rotation axis parallel to the rotation axis of the uncoiler 2, and the drive roll 41 is fixed to a pulley 47. Therefore, when the pinch roll drive motor 43 is rotated counterclockwise, the rotation of the pinch roll drive motor 43 is caused by the power transmission belt 44, pulley 46,
The power is transmitted to the driving roll 41 via the power transmission belt 45 and pulley 47, and the driving roll 41 rotates counterclockwise. On the other hand, the driven roll 42 is pivotally attached to the frame 1b via an air cylinder mechanism 48, and by extending the air cylinder mechanism 48, the outer periphery of the driven roll 42 becomes the same as that of the driving roll 4.
Pressed against the outer periphery of.

Therefore, in this state, the pinch roll drive motor 4
If the driving roll 41 is rotated counterclockwise by the rotation of step 3, the driven roll 42 will rotate as the driving roll 41 rotates.
Rotates clockwise following the rotation of.

Therefore, first, the air cylinder mechanism 48 is retracted,
With a constant gap provided between the outer periphery of the driven roll 42 and the outer periphery of the driving roll 41, the tip of the coil material 3 wound around the uncoiler 2 is threaded into the gap between the driven roll 42 and the driving roll 41, and then
When the air cylinder mechanism 48 is extended and the pinch roll drive motor 43 is rotated, the coil material 3 is squeezed between the slave roll 42 and the driving roll 41 and moves to the left as the driving roll 41 rotates. It is unwound and fed into the loop control chamber 7.

The coil material 3 that has passed through the loop control chamber 7 in this manner is sent to the level 5, where curling is removed and smoothed.

This leveler 5 includes a driving roll 51 and a driven roll 5.
2. Leveler drive motor 53, power transmission belt 5
4, 55, pulleys 56, 57, work roll 58
A driving roll 51, a driven roll 52, pulleys 56, 57, and a work roll 58 are rotatably supported on the frame 1 with their rotational axes parallel to the rotational axis of the uncoiler 2, and the driving roll 51 is It is fixed to the pulley 57. Therefore, when the leveler drive motor 53 is rotated clockwise, the rotation of the leveler drive motor 53 is transmitted to the driving roll 51 via the power transmission belt 54, the pulley 56, the power transmission belt 55, and the pulley 57. rotates clockwise.

Therefore, after the coil material 3 that has passed through the loop control chamber 7 is threaded into the gap between the driving roll 51 and the driven roll 52, the leveler drive motor 5
3 is rotated clockwise, the coil material 3 is fed rightward following the rotation of the driving roll 51 while being pinched by the gap between the driving roll 51 and the driven roll 52.

Work rolls 58 are alternately supported on the upper and lower sides of the coil material 3 in the feeding direction. In the process of passing between the two, the signal is smoothed and sent to the loop controller 8.

This loop controller 8 is for controlling the amount of loop-shaped deflection of the coil material 3 in the feeding path of the coil material 3 from the leveler 5 to the feeder 6, and is connected to an S-shaped path correction lever 81 and this path correction. An air cylinder mechanism 82 for swinging the lever 81 is provided.

The path correction lever 81 moves the pair of side edges 81a, which have a gentle S-shaped curve, to the guide rolls 81b, 8.
1c is connected in a ladder shape, and frame 1
It is rotatably supported by a shaft 81d fixed to the shaft 81d. And these guide rolls 81b, 8
The axial center of 1c and the axis 81d are placed in parallel with the uncoiler 2.

In the drawing, it appears that the shaft 81d and the coil material 3 are interfering with each other, but the shaft 81d supports the outside of the pair of sides 81a, and the shaft 81d supports the outside of the pair of sides 81a.
Since the shaft 81d does not penetrate inside 1a, the shaft 81d and the coil material 3 do not interfere with each other.

Further, the air cylinder mechanism 82 has one end pivotally supported on the frame 1c and the other end pivotally supported on the right end of the path correction lever 81, and the coil material 3 fed from the leveler 5 is guided. It is fed to the feeder 6 via the upper end of the roll 81b and the lower end of the guide roll 81c. Therefore, when the air cylinder mechanism 82 is expanded and contracted, the expansion and contraction operation of the air cylinder mechanism 82 apparently absorbs the amount of deflection of the coil material 3 from the leveler 5 to the feeder 6, and the coil material 3 is moved to the upper end of the guide roll 81b and It is fed to the feeder 6 along the lower end of the guide roll 81c.

The feeder 6 intermittently feeds the coil material 3 smoothed by the leveler 5 and fed via the loop controller 8 to the press device in synchronization with the machine cycle of the subsequent press device. send

Specifically, the feeder 6 includes a driving roll 61, a driven roll 62, a feeder drive motor 63, power transmission belts 64, 65, and pulleys 66, 67. The rotating shaft of the uncoiler 2 is rotatably supported by the base 1 parallel to the rotating shaft of the uncoiler 2, and the driving roll 61 is fixed to a pulley 67. Therefore,
When the feeder drive motor 63 is rotated clockwise, the rotation of the feeder drive motor 63 is transmitted to the driving roll 61 via the power transmission belt 64, pulley 66, power transmission belt 65, and pulley 67, and the driving roll 61 is rotated clockwise. Rotate to .

Therefore, after the coil material 3 that has passed through the loop controller 8 is threaded into the gap between the driving roll 61 and the driven roll 62, the feeder drive motor 6
3 in the clockwise direction, the coil material 3 is fed rightward, following the rotation of the driving roll 61, while being pressed between the gap between the driving roll 61 and the driven roll 62, that is, to a press device (not shown) at a later stage. Ru.

By the way, the subsequent press device feeds the coil material 3 when the angle of the crank drive mechanism is between 270° and 360° (0°) and 90°, corresponding to the rotational position of the crank drive mechanism (not shown). When the angle of the crank drive mechanism is near 180°, the coil material 3
Pressing is performed on.

Therefore, the feeder 6 feeds the coil material 3 intermittently in synchronization with the machine cycle of the subsequent press device, and also when the press device accepts feeding of the coil material 3 (i.e., when the press device receives feeding of the coil material 3 (i.e., when the crank drive mechanism of the feeder 6 is Feeding of the coil material 3 for one press work must be completed when the angle is between 270° and 360° (0°) and 90°.

Therefore, the feeder 6 repeats feeding and stopping in response to the machine cycle of the subsequent press device, and as the feeder 6 repeats feeding and stopping, the coil material 3 from the leveler 5 to the feeder 6
The amount of deflection of the coil material 3 in the feeding path (that is, the loop controller 8) increases or decreases. Therefore, in this embodiment, the path correction lever 81 is swung by expanding and contracting the air cylinder mechanism 8, and the coil material 3
The increase or decrease in the amount of deflection of the coil material 3 is absorbed by increasing or decreasing the feeding path of the coil material 3. However, if the amount of swing of the path correction lever 81 is increased without limit, the curvature of the coil material 3 becomes too large, and the elastic recovery of the coil material 3 is prevented. It exceeds the limit of its power and cannot recover its flatness.

Of course, if the entire length of the path correction lever 81 is extended,
By slightly swinging the path correction lever 81, it is possible to cope with a large increase or decrease in the amount of deflection of the coil material 3, but in this case, an increase in the size of the device is unavoidable. Therefore, in the present invention, by suppressing the range of increase/decrease in the amount of deflection of the coil material 3 in the feeding path of the coil material 3 from the leveler 5 to the feeder 6, it is possible to miniaturize the device. 5 is driven synchronously with a press device (not shown) like the feeder 6, and the feed amount of the leveler 5 and the feeder 6 in one feeding cycle are
By making the feeding amounts of the leveler 5 the same and setting the feeding time of the leveler 5 to be longer than the feeding time of the feeder 6 in one feeding cycle, the leveler 5
The range of increase/decrease in the amount of deflection of the coil material in the feeding path of the coil material from the leveler 5 to the feeder 6 is suppressed to a smaller extent, so that the feeding path of the coil material from the leveler 5 to the feeder 6 can be shortened.

Next, the blocks of the control system that performs such control operations will be shown in FIG. 2, and the control timing will be explained with reference to FIG. 3.

In FIG. 2, 101 is a pinch roll drive motor control unit for verifying and controlling the excitation phase of the pinch roll drive motor 43, and 102 is for determining the excitation phase of the leveler drive motor 53 and controlling it. A leveler drive motor control unit 103 indicates a feeder drive motor control unit for determining and controlling the excitation phase of the feeder drive motor 63. Further, PG1 to PG3 are known pulse generators for position feedback, TG1 to TG.
3 each show a known tachogenerator for speed feedback.

Further, 104 is a main controller that performs various arithmetic processing and system monitoring, 105 is a control panel for manual input, 106 is an auxiliary storage device for storing programs and data, 107 is a CRT display, 2
00 each indicates a press device to which the coil material 3 is fed.

Further, in FIG. 3, a indicates the crank angle of the crank drive mechanism of the press device, and serves as a time reference for control operations. Furthermore, b, c, and d indicate the feeding speeds of the feeder drive motor 63, leveler drive motor 53, and pinch roll drive motor 43, and e indicates the intersection point of the curves shown in b, c, and d, respectively. There is.

Next, the operation of this embodiment will be explained with reference to the above matters.

First, prior to the pressing operation, the tip of the coil material 3 fed out from the uncoiler 2 is sequentially threaded onto the pinch rolls 4, the leveler 5, and the feeder 6.

When the power is turned on, the initial program is loaded from the auxiliary recording device 106 to the main controller 104, and the main controller 104 loads the CRT display 10.
7 to display the initial menu screen. When the operator selects and executes the desired process from the initial menu screen, a data setting procedure is displayed on the CRT display 107. the length of the coil material 3 to be fed by the feeder 6),
(2) Feed angle (the crank angle of the press device when the feeding operation of the feeder 6 starts and the above-mentioned crank angle when the feeding operation of the feeder 6 is completed), (3) Material, plate thickness, and plate width of the coil material 3 etc. are input from the control panel 105.

The data set in this way is displayed on the CRT display 107, and the main controller 104 uses the set data to control control data (feeding amount per press cycle, feeding speed increase characteristics, maximum speed, feeding speed decreasing characteristics, etc.), and calculates this by controlling the pinch roll drive motor control unit 10.
1. Provided to the leveler drive motor control section 102 and feeder drive motor control section 103.

First, the control data given to the feeder drive motor control section 103 will be explained.

As already mentioned, the feeder 6 is connected to the press device 2.
Since the feeding of the coil material 3 must be completed within the time that 00 can accept the feeding of the coil material 3, for example, the press device has a crank angle of its drive mechanism between 270° and 90°. Assuming that it is possible to receive the feeding of the coil material 3 at the feeder 6
must start feeding when the crank angle is 270° and complete feeding when the crank angle is 90°.

During this time, in order to feed the amount of coil material 3 set by the above data setting procedure,
For example, as shown in FIG. 3b, the press device 200
When the crank angle of
If it is necessary to linearly decrease the speed to 0 during this period, control data to that effect is provided to the feeder drive motor control unit 103.

Next, the control data given to the leveler drive motor control section 102 will be explained.

First, the conditions required of the leveler 5 will be listed.

First, in order to prevent the amount of loop-shaped deflection of the coil material 3 in the loop controller 8 from increasing or decreasing unilaterally, it is necessary to
It is necessary that the feed amount of the leveler 5 be equal to the feed amount of the feeder 6 within the time that 00 completes one press cycle (the time that the crank rotates 360 degrees).

Second, in order to minimize the range of increase/decrease in the amount of deflection of the coil material 3 in the loop controller 8,
Taking into account the torque of the leveler drive motor 53 and the material, plate thickness, plate width, etc. of the coil material 3, the time-speed characteristics of the leveler drive motor 53 are changed to the time-speed characteristics of the feeder drive motor 63 within the range that the leveler 5 can follow. It is desirable to get close to the characteristics. (For example, if the time-speed characteristics of the leveler drive motor 53 and the time-speed characteristics of the feeder drive motor 63 completely match, the range of increase or decrease in the amount of deflection of the coil material 3 in the loop controller 8 will be 0.) The main controller 104 controls the material of the coil material 3 and
Conditions related to set loads such as plate thickness and plate width, etc.
The optimum driving characteristics of the leveler 5 (that is, the driving characteristics that are most similar to the driving characteristics of the feeder 6 within the range that the leveler 5 can follow) are determined based on the feeding amount within the machine cycle time, and this characteristic can be obtained. Leveler drive motor control unit 10 using data as control data
Give to 2.

Here, for example, if feeding is completed within a time of 270° to 180° with the crank angle of the press device (1.5 times the drive time of the feeder 6), there will be no response delay and the set If the amount of coil material 3 can be fed, as shown in FIG. 3c, the crank angle of the press device 200 is
Maximum speed in a straight line between 270° and 45° (60 m/min)
Control data is given to the leveler drive motor control unit 102 such that the crank angle increases linearly to zero speed while the crank angle is between 45° and 180°.

Next, the pinch roll drive motor control section 101
Let us explain the control data given to .

In this embodiment, the feed path in the rape control chamber 7 from the pinch roll 4 to the leveler 5 is sufficiently long, and since the pinch roll 4 drives the entire coil material 3 wound around the uncoiler 2, In order to minimize torque, it is necessary to reduce load fluctuations as much as possible, and so the pinch rolls 4 are run at a constant speed after startup. Therefore, the pinch roll drive motor control unit 101 only needs to be given control data indicating its average speed, and the main controller 104 can calculate the pinch roll drive motor control unit 101 based on the data indicating the feeding amount of the coil material 3 in one set machine cycle. The average speed of the roll drive motor 43 is calculated, specifically, 22.5 m/min as shown in Figure 3d.
This control data is given to the pinch roll drive motor control section 101.

After giving various control data in this way, the main controller 104 controls the pinch roll drive motor control section 101, the leveler drive motor control section 102, the feeder drive motor control section 103, and the press device 2.
Enable 00.

First, the pinch roll drive motor control unit 101 controls the crank angle of the press device 200.
The rotation of the pinch roll drive motor 43 is transmitted to the drive roll 41 via the above-described transmission mechanism, and the coil material 3 wound around the uncoiler 2 is rotated.
is compressed by the gap between the driving roll 41 and the driven roll 42, passes through the loop control chamber 7, and is fed to the leveler 5. Then, the pinch roll drive motor 43 runs at a constant speed when the set speed is reached as shown in FIG. 3d. If the leveler 5 has not started feeding at this point, the loop amount in the loop control chamber 7 increases.

Thereafter, when the crank angle reaches 270°, the press device 200 notifies the main controller 104 of this fact, and the main controller 104 gives a start instruction to the leveler drive motor control unit 102 and the feeder drive motor 103, and the leveler drive motor control unit 102 and the feeder drive motor control unit 103 determine the excitation phase of the leveler drive motor 53 and the feeder drive motor 63 according to the control data that has already been set.

In response, the leveler drive motor 53 and the feeder drive motor 63 start rotating, and the rotation is transmitted to the drive roll 51 and the drive roll 61 via the transmission mechanism described above, and these also start rotating.

First, by rotating the driving roll 51,
The coil material 3 fed to the leveler 5 is transferred to the driving roll 5
1 and the driven roll 52, and is fed to the right, smoothed in the process of passing through the gap between the upper and lower work rolls 58, and fed to the feeder 6. Further, as the driving roll 61 rotates, the coil material 3 fed to the feeder 6 is fed rightward while being pinched between the driving roll 61 and the driven roll 62, and is applied to the press machine 200. . Then, the leveler 5 reaches the maximum speed (60 m/min) at timing t4 (that is, at a timing of 45° in crank angle), and stops at timing t7 (timing at 180° in crank angle) for one press cycle. Complete the feeding.

Also, the feeder 6 reaches the maximum speed (90 m/min) at timing t2 (timing of 360° in crank angle), stops at timing t5 (timing of 90° in crank angle), and calculates the speed for one press cycle. Complete feeding.

By the way, as already mentioned, in this embodiment, the time-velocity characteristics of the pinch roll 4, leveler 5, and feeder 6 are different from each other. increases or decreases.

First, considering the increase and decrease in the amount of deflection in the loop control chamber 7, as described above, the amount of deflection increases for a while after the pinch roll 4 starts feeding. Thereafter, the leveler 5 starts the feeding operation, and when the feeding speed of the leveler 5 and the feeding speed of the pinch roll 4 are reversed at timing t1, the amount of deflection decreases. After that, the timing of t4 (crank angle is 45°
Leveler 5 enters deceleration mode at t6
When the feeding speed of the leveler 5 and the feeding speed of the pinch roll 4 are reversed again at the timing , the amount of deflection increases again until the next timing t1. Thereafter, the amount of deflection of the coil material 3 within the loop control chamber 7 increases or decreases in the same manner, but this increase or decrease in the amount of deflection is sufficiently absorbed within the loop control chamber 7.

Next, considering the increase or decrease in the amount of deflection of the coil material 3 in the loop controller 8, as mentioned above, the feeder 6 rises more rapidly than the leveler 5, so when the crank angle reaches 270°, the leveler 5 and the feeder 6 starts the feeding operation, the amount of deflection decreases. then t2
At the timing (timing when the crank angle is 360°), the feeder 6 is in a deceleration mode, but at this point, the leveler 5 is in an acceleration state. Then, at timing t3, the speeds of the leveler 5 and feeder 6 are reversed, and the amount of deflection increases. Then, when the leveler 5 stops feeding at timing t7 (timing of 180° in crank angle), the amount of deflection in the loop controller 8 becomes the initial amount.

By the way, when the variation in the amount of deflection of the coil material 3 in the loop controller 8 is calculated, this amount of deflection is defined as the time-integrated difference between the speed characteristic line of the feeder 6 and the speed characteristic line of the leveler 5. Visually showing the timing when the crank angle is 270° as the origin, the area of the triangle formed by connecting points A, B, and C in Figure 3e is the maximum value of the amount of deflection in the loop controller 8. Become.

On the other hand, when the leveler 5 is run at a constant speed as in the current situation, the speed characteristics of the leveler 5 are similar to those of the pinch roll 4, so if the amount of deflection in this case is visually shown, In Figure 3 e, point A'・
The area of the triangle formed by connecting points B and C' becomes the maximum value of the amount of deflection in the loop controller 8. As is clear from this, it can be understood how the range of increase/decrease in the amount of deflection of the coil material 3 in the loop controller 8 is reduced according to the present invention.

In addition, the pulse generator PG1~ shown in Figure 2
Since the position feedback by PG3 and the velocity feedback by the tachogenerators TG1 to TG3 are well known, redundant explanations will be omitted.

In addition, although the above description assumes that the pinch roll 4 runs at a constant speed, if the pinch roll drive motor 43 has sufficient torque, the pinch roll 4 may also be synchronized with the operating cycle of the press device. In this case, the loop length in the loop control chamber 7 can be shortened, which further contributes to miniaturization of the device.

Furthermore, in the above, for feeder 6, it takes half the time of one press cycle (from 270° to 270° in crank angle).
An example of assigning a time (time of 90°) as the feeding time, and assigning a time 1.5 times the feeding time of feeder 6 (time of 270° to 90° in crank angle) as the feeding time to leveler 5. However, if the conditions set at the initial stage (for example, the feed amount per press cycle and the material characteristics of the coil material 3) differ, the feeding time allocation may differ depending on the conditions. Needless to say, as long as the torque of the leveler drive motor 53 has a margin with respect to the load, the coil material 3 in the loop controller 8 is adjusted as the feeding time assigned to the leveler 5 approaches the feeding time assigned to the feeder 6. The amount of deflection of coil material 3 is reduced.
flatness is further improved.

In addition, although the above example shows an example in which the rotation start points of the leveler drive motor 53 and the feeder drive motor 63 are made to coincide, the same result can be obtained even if the rotation completion points or speed peak points of the leveler drive motor 53 and the feeder drive motor 63 are made to coincide with each other. It is expected that the effect of

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to make the speed characteristics of the leveler as close as possible to the speed characteristics of the feeder depending on the required feeding amount and the amount of load applied to the motor. The width of increase/decrease in the amount of deflection of the coil material in the feeding path from the leveler to the feeder is reduced, and therefore the feeding path from the leveler to the feeder can be shortened, which can greatly contribute to miniaturization of the entire device.

Furthermore, if the torque of the leveler drive motor has sufficient margin for the load, the speed characteristics of the leveler can be more closely approximated by the speed characteristics of the feeder, so the deflection of the coil material in the feeding path from the leveler to the feeder can be reduced. The amount range can be significantly reduced,
The flatness of the coil material is further improved.

[Brief explanation of the drawing]

Fig. 1 is a mechanical diagram of the coil material feeding device according to the present invention, Fig. 2 is a block diagram of the control system of the coil material feeding device according to the present invention, and Fig. 3 shows an example of the speed characteristics of the device of the present invention. figure. 5... Leveler, 53... Leveler drive motor, 6
...Feeder, 63...Feeder drive motor, 1
02... Leveler drive motor control section, 103... Feeder drive motor control section.

Claims (1)

[Claims] 1. An uncoiler that rotatably supports a material plate that has been previously wound into a coil shape, and an independent power source that rotates the coiled material plate supported by the uncoiler at a constant speed. A coil material feeding means that feeds out the coil material, and a leveler that uses an independent power source to intermittently smooth the material plate fed out from the uncoiler by a predetermined amount necessary for one press operation at a timing synchronized with the operation timing of the press device. , which has an independent power source and feeds the material plate smoothed by the leveler by a predetermined amount necessary for one press operation at a timing synchronized with the operating timing of the press device at a rate faster than the feed speed of the leveler. a feeder that intermittently feeds the press device at a feeding speed; and a feeder on one side of the feeding path that extends from the material plate discharge port of the leveler to the material plate receiving port of the feeder. a first arcuate portion having a center of curvature at and a second arcuate portion having a center of curvature at the other side of the feeding path;
The first circular arc portion is connected to the second circular arc portion, and is swingably supported with the interconnection point of the first circular arc portion and the second circular arc portion as a swing axis, and is supported by the leveler. a feeding guide that feeds a smoothed material plate to the feeder along the first arcuate portion and the second arcuate portion; A coil material feeding device comprising a biasing means for biasing each of the second arcuate portions toward a side opposite to the center of curvature.