JPH11254034A - Method for detecting tail end of rolled stock and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correctly detect a tail end regardless of a tail end shape of a rolled stock. SOLUTION: This device is provided with a coiler which coils a rolled stock 4 in a coil shape 6, a HMD 3 which is arranged in the central part of a transporting path of the rolled stock 4 coiled onto the coiler, HMDs 3a, 3b at least each one of which is arranged in both sides of the width direction of the rolled stock with respect to the HMD 3, and a tail end position calculating means 9 which obtains the tail end position of the rolled stock by an arithmetic operation from ON, OFF signals obtained from the above described three HMDs. More correct tail end position of the rolled stock is detected by judging the timing when all HMDs turn OFF from ON as the tail end position of the rolled stock.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling device capable of accurately detecting the position of the tail end of a rolled material even if the tail end shape of the rolled material being wound on a winder of a rolling facility is irregular. The present invention relates to a method and an apparatus for detecting a material tail end.

[0002]

2. Description of the Related Art FIG. 15 is a diagram showing a conventional rolled material tail end detecting device being wound on a winder of a rolling facility.
In the drawings, 1 is a rolled material width measuring device, 1a is a cross-sectional information detector, 2 is a finishing mill, 3 is a hot lump detector (hereinafter referred to as HMD) provided at the center of the rolling equipment, and 4 is a rolled material. ,
5a is a pinch roll, 5b is a pinch roll drive motor, 6 is a coil on which a rolled material is wound, 7a is a winder mandrel, 7b is a winder mandrel drive motor, 8
Is a pulse generator attached to the winder mandrel drive motor 7b; 9 is a tail for detecting the tail end position of the rolled material 4 and stopping the tail end based on the pulse count value of the pulse generator 8 and the ON / OFF signal of the HMD. It is an end stop control device.

Next, the operation will be described. While the rolled material 4 is being conveyed, the timing at which the HMD 3 changes from ON to 0FF is detected as the tail end position of the rolled material, and the count value of the pulse transmitted from the pulse generator 8 from the above timing is detected by the tail end stop control device 9. , And the tail end of the rolled material is stopped.

[0004]

As described above, in the conventional apparatus for detecting the tail end of a rolled material being wound by a winder of a rolling equipment, the HMD 3 is mounted at the center of the rolling equipment. In the case where the shape of the tail end is irregular, there is a problem that accurate tail end detection cannot be performed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a method for detecting a tail end of a rolled material capable of accurately detecting the tail end regardless of the shape of the tail end of the rolled material. The aim is to obtain a device.

[0006]

According to the present invention, there is provided a method for detecting a tail end of a rolled material.
And all the above HMDs are ON while the rolled material is being conveyed.
The position of the tail end of the rolled material is detected at the timing of turning off from.

In addition, HMs are arranged at the center of the conveyance path and at the left and right sides thereof in a line in the width direction of the rolled material to be wound by the winding machine of the rolling equipment.
D is arranged, and during the transport of the rolled material, the tail end shape of the rolled material is determined by calculation from the order and time when the above HMDs are turned from ON to OFF, and all the HMDs are determined based on the determination result and the width data of the rolled material. Is corrected from the timing at which is changed from ON to OFF, and the tail end position of the rolled material is detected.

[0008] In the above method, the amount of deviation between the center line of the rolling equipment and the center line of the rolled material is calculated as follows.
The detected tail end position of the rolled material is corrected.

A rolled material tail end detecting device according to the present invention comprises a winding machine for winding a rolled material in a coil shape, an HMD installed at the center of a conveying path of a rolled material wound by the winding machine,
At least one HMD installed on each side of the MD in the rolled material width direction, ON and O obtained from the above three HMDs
A tail end position detecting means for obtaining a tail end position of the rolled material from the FF signal is provided.

A winding machine for winding a rolled material into a coil, an HMD installed at the center of a conveying path of the rolled material to be wound by the winding machine, HMD with one installed, HM on both sides above
An HMD moving device for moving D in the width direction of the rolled material, and a width setting device for supplying width data of the rolled material; ON / OFF signals obtained from the HMDs on both sides and the center HMD positioned by the width data. A tail end position calculating means for calculating the tail end position of the rolled material by calculation is provided.

In the above construction, there is provided a rolled material center deviation amount setting device for setting a deviation amount between the center line of the rolling equipment and the center line of the rolled material, and an output signal of the setting device is transmitted to the tail end position calculating means. The rolled material is supplied to correct the detected tail end position of the rolled material.

The tail end (including two places) of the rolled material is detected by a cross-section information detector of the rolled material provided upstream of the HMD arrangement position on the rolled material conveying path, and this detection signal is output. The HMD is provided to an HMD moving device to move the HMDs on both sides to a position in the width direction of the rolled material where the tail end exists.

A winding machine for winding the rolled material into a coil, a pinch roll provided in front of the winding machine, a motor for driving the pinch roll, and a conveying path for the rolled material wound on the winding machine An HMD installed in the center, a current detector that detects a supply current to the pinch roll drive motor,
A current value storage means for storing a detection current value of the current detector; and a current value comparison means, wherein the HMD is turned off.
The current detection value at the time when the current value is stored in the current value storage means, and the stored value is compared with the subsequent current detection value by the current value comparison means. The timing shown is detected as the tail end of the rolled material.

A winder for winding the rolled material into a coil; a pinch roll provided in front of the winder; a power supply for passing a current through the rolled material between the mandrel of the winder and the pinch roll; A current detector for detecting a power supply current is provided, and a timing at which the current becomes zero is detected as a tail end of the rolled material.

A counter for detecting the number of revolutions of the winder; a count value of the counter from the timing of detecting the tail end position of the rolled material by the HMD until the tail end of the rolled material reaches the winder; There is provided a tail end stop control device that performs a calculation based on the diameter of the winding coil and stops rotation of the winding machine at a predetermined position where the tail end of the rolled material reaches the winding machine.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 In FIG. 1, 1
Is a rolled material width measuring device, 1a is a cross-sectional information detector, 2 is a finish rolling mill, 3 is H provided at the center on the rolled material transport path.
MD, 3a and 3b are HMDs provided on both sides of the HMD 3 side by side in the rolled material width direction, 4 is a rolled material, 5a is a pinch roll, 5b is a pinch roll drive motor, and 6 is a rolled material 4. Coil 7a is a winder mandrel, 7
b is a motor for driving the winder mandrel, 8 is a pulse generator attached to the motor 7b for driving the winder mandrel, and 9 is the tail of the rolled material according to the pulse count value from the pulse generator 8 and the ON / OFF signal of the HMD. This is a tail end stop control device for detecting an end position and stopping the tail end.

During the transport of the rolled material 4 shown in FIG.
3, HMD3a and HMD3b are all ON to 0
The timing to become FF is detected by the tail end stop control device 9,
This is set as the tail end position of the rolled material 4. In addition, the count value of the pulse transmitted from the pulse generator 8 from the above timing is integrated by the tail end stop control device 9, and the rotation angle until the winding mandrel 7a stops using the following formula is obtained (FIG. 2). Stop the tail end of the rolled material. ^{_{θ X = SIN -1 {(D}} 0/2-d / 2) / L D} = (D 0 -d) / (2 × L D) × 180 / π (DEG) α = θ A -θ X ( _{DEG) L X = π · d} · α / 360 ° _{L Y = L D · COSθ X} = L D {1- (1/2) × θ X 2} θ T = {(L X + L Y + L Z) / here π · D ₀ · 360 _{°} + θ S (DEG),} D 0 is the coil diameter, d is the pinch rolls 5a diameter, L _D is the distance between the centers of the coil 6 of the pinch rolls 5a, theta _X is The angle between the rolled material 4 moving from the pinch roll 5a to the coil 6 and the line connecting the center of the pinch roll 5a to the center of the coil 6, θ _A is between the horizontal line and the center of the coil 6 from the center of the pinch roll 5a. the angle between a line segment connecting the angle of contact between the α is rolled material 4 and the pinch rolls 5a, L _X is the distance that the rolled material 4 and the pinch roll 5a is in contact, L _Y pinch Distance of the rolled material 4 to be wound into a coil 6 away Lumpur 5a, the distance from the L _Z is HMD3 installation position to the center of the pinch rolls 5a, theta _S is the position the rolled material 4 is wound on the coil 6 angle from to the tail end stop position, theta _T is the angle of rotation from the tail detection position to the winder stop position. In this way, it is possible to detect and stop the tail end position of the rolled material more accurately than before.

Embodiment 2 FIG. FIG. 3 shows the configuration of FIG. 1 in which the rolled material tail end position correction arithmetic unit 10 and the rolled material width data setter 1
1, a rolled material tail end shape judging device 12 and a rolled material center deviation amount setting device 13 are added.

While the rolled material 4 shown in FIG.
From the timing at which HMD 3a or (and) HMD 3b changes from ON to OFF to the timing at which HMD 3a or HMD 3b changes from ON to OFF, the arithmetic unit 10 integrates the count value of the pulse transmitted from pulse generator 8, thereby reducing the rolled material transport distance. Is measured. This is L1. The width of the rolled material set in advance is W, from HMD3 to HMD3a.
X = (L1 / L2) × W /, where L2 is the distance to (or HMD3b) and X is the tail end position of the rolled material after correction (the distance from HMD3, 3a, 3b to the tail end position of the rolled material). 4 can be obtained. (FIG. 4)

Next, during conveyance of the rolled material 4 shown in FIG.
MD3, HMD3a and HMD3b are ON to OF
In the order of F, the rolled material tail end shape determiner 12 determines the tail end shape of the rolled material. When the HMD 3 is turned off last, the tongue shape (FIG. 5) and the HMD 3a (or the HM
D3b), HMD3, HMD3b (or HMD3a)
In the order of 0FF, the irregular tongue shape (FIG. 6)
MD3, HMD3a (or HMD3b) and HMD3b
(Or HMD 3a), the fish tail shape (FIG. 7) is determined.

When the rolled material end shape determining unit 12 determines that the shape is irregular tongue shape or fishtail shape, the HM
At the tail end position at the center of the rolled material detected at the timing when D3 changes from ON to OFF, the rolled material tail end position correction arithmetic unit 1
0 (H) obtained by adding the tail end position correction value of the rolled material obtained at 0
X position from the MD installation position) is set as the tail end position of the rolled material. Further, the count value of the pulse transmitted from the pulse generator 8 is integrated by the tail end stop control device 9 to stop the tail end of the rolled material. In this way, it is possible to detect the tail end position of the rolled material more accurately for a rolled material having an irregular tail end shape and a wider width than the installation distance (2 × L2) from the HMD 3a to the HMD 3b. it can.

Further, it is assumed that a shift amount between the center line of the rolling equipment and the center line of the rolled material from the rolled material width measuring device 1 is α, and a shift amount of the tail end position of the rolled material due to the center shift amount α is X ′. X ′ = (L1 / L2) × α. (FIG. 8) When the tail end position of the rolled material (the distance from the HMD 3, 3a, 3b to the rolled material tail end position) after correction of the rolled material in consideration of the shift amount of the tail end position of the rolled material due to the center shift amount is X ", "= XX '= (L1 / L2) * W / 4- (L1 / L2) * [alpha] = (L1 / L2) * (W / 4- [alpha]). (FIG. 8)

If the rolled material end shape determiner 12 determines that the shape is irregular tongue shape or fishtail shape, the HM
The rolled material tail end position correction calculating device 1 is provided at the center tail end position of the rolled material detected at the timing when D3 is turned from ON to OFF.
The position obtained by adding the tail end position correction value of the rolled material obtained at 0 is the tail end position of the rolled material. In addition, the count value of the pulse transmitted from the pulse generator 8 is stored in the tail end stop control device 9.
And stop the tail end of the rolled material. Thus, the tail end shape of the rolled material is irregular, and HMD 3a to H
With a rolled material wider than the installation distance (2 × L2) of MD3b,
Further, even when there is a deviation between the center line of the rolling equipment and the center line of the rolled material, the tail end position of the rolled material can be detected more accurately and the tail end can be stopped.

Embodiment 3 FIG. FIG. 9 shows a configuration of FIG. 1 in which the rolled material center shift amount setting device 13, an HMD moving device 21 for moving the HMDs on both sides in the rolled material width direction, an HMD position detector 22, an HMD movement control device 23, An end position setting device 24 is added.

In FIG. 9, when a predetermined width of the rolled material 4 is W and a moving distance of the HMD 3a and HMD 3b from the center line of the rolling equipment is Y, it can be obtained by Y = W / 4 (FIG. 10). . The HMD 3a and the HMD 3b are moved by the HMD
The timing at which D3, HMD3a, and HMD3b all change from ON to OFF is defined as the tail end position of the rolled material. Further, the count value of the pulse transmitted from the pulse generator 8 at the above timing is integrated by the tail end stop control device 9 to stop the tail end of the rolled material. In this way, even if the tail end shape of the rolled material is irregular, it is possible to arrange the HMD corresponding to the width of the rolled material, and it is possible to detect the tail position of the rolled material more accurately.

Further, assuming that the difference between the center line of the rolling equipment from the rolled material width measuring device 1 and the center line of the rolled material is α, the moving distance of the HMD 3a and the HMD 3b from the center line of the rolling equipment due to the center deviation α. Y ′ can be obtained by Y ′ = (W / 4) ± α. (FIG. 11) The movement distance Y ′ is obtained by the HMD movement control device 23, and the HMD 3a and the HMD 3b are moved to the position of Y ′ by the HMD movement device 21 so that the HMD 3, HMD 3a, and HMD 3b are all turned from ON to OFF. Is the tail end position of the rolled material. Further, the count value of the pulse transmitted from the pulse generator 8 at the above timing is integrated by the tail end stop control device 9 to stop the tail end of the rolled material. In this way, even if the tail end shape of the rolled material is irregular, it is possible to arrange the HMD corresponding to the width of the rolled material, and there is a deviation between the center line of the rolling equipment and the center line of the rolled material. Even in this case, the tail end position of the rolled material can be detected more accurately, and the tail end can be stopped.

Further, a signal of the tail end position (two positions in the figure) of the rolled material detected by the cross-section information detector 1a installed in front of the finishing mill 2 is added to the HMD movement control device 23, and the rolling equipment center is controlled. Distances Z1 and Z2 from the line (FIG. 12)
The HMD 3a and HMD 3b are moved to the position by the HMD moving device 21, and the timing at which all of the HMD 3, HMD 3a, and HMD 3b change from ON to OFF is set as the tail end position of the rolled material. Further, the count value of the pulse transmitted from the pulse generator 8 at the above timing is integrated by the tail end stop control device 9 to stop the tail end of the rolled material. In this way, even if the tail end shape of the rolled material is irregular, the tail end position of the rolled material can be detected more accurately and the tail end can be stopped.

Embodiment 4 FIG. 13 is obtained by adding a current detector 14, a current feedback value storage device 15, and a current feedback value comparison device 16 of a pinch roll driving motor to the conventional configuration of FIG.

When the rolled material 4 is passing through the pinch roll 5a installed in front of the winder of the rolling equipment shown in FIG.
The current detector 14 detects the current feedback value of the pinch roll driving motor 5b based on the OFF signal of the HMD 3 installed in the center of the transporting path of the rolled material 4, and stores the current feedback value in the current feedback value storage device 15. The current value at this time is I _0. And a current feedback value I _T of the stored current value I ₀ and the subsequent pinch roll driving motor 5b compared with current feedback value comparison device 16, beta
The timing at which the change of (%) or more occurs is defined as the tail end position of the rolled material. 100-100 integrated in _{× I T / I 0> ±} β (%) The above timing is the pulse tail end stop control system, the count value of the originating from the pulse generator 8 from 9 performs tail end stop of the rolled material. Thus, even if the tail end shape of the rolled material is irregular, the tail end position of the rolled material can be accurately detected and the tail end stopped by observing the current value.

Embodiment 5 FIG. 14 shows a configuration in which the tail end detection power supply 31 and the tail end detection current detector 3 are added to the conventional configuration of FIG.
2. Current feedback value storage device 33, current feedback value comparison device 34
Is added.

A voltage is applied to the pinch roll 5a and the winder mandrel 7a installed in front of the winder of the rolling equipment shown in FIG. When the rolled material 4 is being wound on the winder mandrel 7a and is passing through the pinch roll 5a, the tail end is detected from the power supply 31 through the pinch roll 5a, the rolled material 4, and the winder mandrel 7a. The current can be detected by the use current detector 32. When the rolled material 4 passes the pinch roll 5a, the tail end detection current detector 32 detects zero current. The current feedback value is detected by the tail end detection current detector 32 based on the OFF signal of the HMD 3 installed at the center of the rolled material conveyance path, and stored in the current feedback value storage device 33. The current value at this time is I _0. Comparing the current feedback value I _T detected and the stored current value I ₀ at subsequent tail detection current detector 32 at a current feedback value comparing unit 34, β (%) or more variation occurs The timing is set to the tail end position of the rolled material. 100-100 × integrated with _{I T / I 0> β (} %) pulse count value tail end stop control device transmitted from the pulse generator 8 from the timing 9,
Stop the tail end of the rolled material. In this way, even if the tail end shape of the rolled material is irregular, the tail end position of the rolled material can be accurately detected with a simpler configuration, and the tail end can be stopped.

[0032]

As described above, according to the present invention, it is possible to accurately detect the tail end position of a rolled material regardless of the tail end shape of the rolled material.

Further, since the shape of the tail end of the rolled material is determined and the tail end position is corrected based on the tail end shape,
A more accurate tail end position can be detected.

Further, even when there is a deviation between the center of the rolling equipment and the center of the rolled material, a more accurate tail end position of the rolled material can be detected by correction by setting the position of the HMD and setting the amount of deviation. it can.

Further, the tail end of the rolled material is detected by the change of the current of the pinch roll driving motor when the HMD is turned off and the current of the pinch roll driving motor thereafter. It can be used to accurately detect the tail end position of the rolled material.

In addition, since the position of the tail end can be accurately detected regardless of the irregular shape of the tail end of the rolled material, accurate tail end stop control can be performed based on the result.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a rolled material tail end detecting device according to Embodiment 1 of the present invention.

FIG. 2 is a diagram illustrating tail end stop control of a rolled material.

FIG. 3 is a configuration diagram showing a rolled material tail end detecting device according to Embodiment 2 of the present invention.

FIG. 4 is a diagram illustrating tail end detection of a rolled material according to a second embodiment.

FIG. 5 is a diagram for explaining determination of a tail end shape of a rolled material according to a second embodiment.

FIG. 6 is a diagram for explaining determination of a tail end shape of a rolled material according to a second embodiment.

FIG. 7 is a diagram for explaining determination of a tail end shape of a rolled material according to a second embodiment.

FIG. 8 is a diagram illustrating tail end detection correction due to a shift between a rolling equipment center line and a rolled material center line according to the second embodiment.

FIG. 9 is a configuration diagram showing a rolled material tail end detecting device according to Embodiment 3 of the present invention.

FIG. 10 is a diagram illustrating a tail end detection operation of a rolled material in a third embodiment.

FIG. 11 is a diagram illustrating tail end detection correction due to a shift between a rolling equipment center line and a rolled material center line in a third embodiment.

FIG. 12 is a diagram showing a tail end of a rolled material detected by a cross-section information detector according to the third embodiment.

FIG. 13 is a configuration diagram showing a rolled material tail end detecting device according to Embodiment 4 of the present invention.

FIG. 14 is a configuration diagram showing a rolled material tail end detecting device according to Embodiment 5 of the present invention.

FIG. 15 is a configuration diagram showing a conventional rolled material tail end detecting device.

[Explanation of symbols]

1 rolled material width measuring device, 1a cross-section information detector, 2
Finishing mill, 3, 3a, 3b HMD, 4 rolled material,
5a pinch roll, 5b pinch roll drive motor, 6 coil, 7a winder mandrel, 7b winder mandrel drive motor, 8 pulse generator, 9 tail end stop control device, 10 rolled material tail end position calculating device, 11 Rolled material width data setting device, 12 Rolled material tail shape judgment device, 13 Rolled material center deviation amount setting device, 14 Current detector of pinch roll drive motor, 1
5 current feedback value storage device, 16 current feedback value comparison device,
21 HMD moving device, 22 HMD position detector, 23
HMD movement control device, 24 rolled material tail end position setting device,
31 power supply for tail end detection, 32 current detector for tail end detection, 33 current feedback value storage device, 34 current feedback value comparison device.

Claims (10)

[Claims] 1. A hot lump detector (hereinafter referred to as an HMD) is arranged at the center of a transport path and on the left and right sides thereof in a line in the width direction of a rolled material to be wound by a winder of a rolling facility, and the rolled material is transported. Wherein the tail end position of the rolled material is detected based on the timing at which all the HMDs are turned from ON to OFF. 2. An HMD is provided at the center of the transport path and at the left and right sides thereof in a line in the width direction of the rolled material to be wound by the winder of the rolling equipment.
Are arranged, and each of the above HMDs is turned from ON to O during the transport of the rolled material.
The shape of the tail end of the rolled material is determined by calculation from the order and time of the FF, and the position determined from the timing when all the HMDs are turned from ON to OFF is corrected based on the result of the determination and the width data of the rolled material. A tail end position of the rolled material, wherein the tail end position of the rolled material is detected. 3. The method according to claim 1, wherein the detected tail end position of the rolled material is corrected based on a shift amount between the center line of the rolling equipment and the center line of the rolled material. Rolled material tail end detection method. 4. A winding machine for winding a rolled material into a coil, an HMD installed at the center of a conveying path of the rolled material to be wound on the winding machine, and at least each of the HMDs on both sides in the width direction of the rolled material with respect to the HMD. A rolled material tail end detecting device, comprising: a tail end position detecting means for obtaining a tail end position of a rolled material from one installed HMD and ON / OFF signals obtained from the three HMDs. 5. A winding machine for winding a rolled material into a coil, an HMD installed at the center of a conveying path of the rolled material to be wound on the winding machine, and at least each of the HMDs on both sides of the HMD in the width direction of the rolled material. One set of HMDs, an HMD moving device for moving the HMDs on both sides in the width direction of the rolled material, and a width setting device for supplying width data of the rolled materials, and the HMDs on both sides positioned by the width data are provided. Central HM
And a tail end position calculating means for calculating a tail end position of the rolled material from the ON / OFF signal obtained from D. 6. A rolling material center deviation amount setting device for setting a deviation amount between a center line of a rolling equipment and a center line of a rolling material, and an output signal of the setting device is supplied to a tail end position calculating means. 6. The rolled material tail end detecting device according to claim 4, wherein the detected tail end position of the rolled material is corrected. 7. The tail end (including two cases) of a rolled material is detected by a rolled material cross-section information detector provided upstream of the HMD arrangement position of the rolled material transport path, and this detection signal is output. 7. The rolled material tail end position detecting device according to claim 5, wherein the HMD is provided to an HMD moving device to move the HMDs on both sides to the rolled material width direction position where the tail end exists. 8. A winder for winding a rolled material into a coil, a pinch roll provided in front of the winder, a motor for driving the pinch roll, and a conveying path for the rolled material wound on the winder. An HMD installed at the center, a current detector for detecting a supply current to the pinch roll drive motor, a current value storage means for storing a current value detected by the current detector, and a current value comparison means; Is stored in the current value storage means, and the stored value is compared with the subsequent current detection value by the current value comparison means. The output of the current value comparison means is equal to or greater than a predetermined value. A rolled material tail end detecting device, wherein a timing indicating a change is detected as a tail end of a rolled material. 9. A winder for winding a rolled material into a coil, a pinch roll provided in front of the winder, a power source for passing a current through the rolled material between a mandrel of the winder and the pinch roll, A rolled material tail end detecting device, comprising: a current detector for detecting a power supply current, wherein a timing at which the current becomes zero is detected by the current detector as a tail end of the rolled material. . 10. A counter for detecting the number of revolutions of the winding machine, the count value of the counter from the timing of detecting the tail end position of the rolled material by the HMD until the tail end of the rolled material reaches the winding machine; A tail end stop control device that performs a calculation based on the diameter of the winding coil and stops rotation of the winding machine at a predetermined position where the tail end of the rolled material reaches the winding machine. The rolled material tail end detecting device according to any one of claims 4 to 9.