JP2908122B2 - Wire division control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a wire finishing and rolling mill (hereinafter, simply referred to as a rolling mill) which is formed into a ring shape by a laying head and then guided to a coil concentrating device by a conveyor. , For example, 2
The present invention relates to a wire rod division control device for cutting by a cutting machine provided in a coil concentrating device so as to divide it.

[0002]

2. Description of the Related Art FIG. 2 shows an outline of a wire rod processing line for performing such rolling, forming and bunching. In the figure, a wire rod 1 rolled by a wire rod finishing mill 2 advances in the direction of arrow A,
It is formed into a ring shape by the laying head 3, formed as a coil 4, continuously developed on a conveyor 5, conveyed in the direction of arrow B, and converged by a coil converging device 7 arranged at the end of the conveyor 5.

[0003] The coil concentrating device 7 comprises a sail 8 for passing the loop of the coil 4, a coil plate 9 for receiving the coil 4, an iris 10 for temporarily storing the coil 4, and a cutting machine 11. The upper coil 4 falls into the coil concentrating device 7, enters the sail 8 at the same time, and accumulates on the coil plate 9.

FIG. 3 is a view for explaining the state of cutting of the coil 5 during focusing. When cutting the coil 4, the iris 10 is closed and the coil 4 that falls later is temporarily stored. Machine that cuts the straight part of the coil 4
At 11, the conveyer 5, which has completed the convergence on the coil plate 9, is carried out of the coil convergence device 7. afterwards,
The iris 10 is opened and the latter half of the coil 4 is stacked on the coil plate 9 through the sail 8 and refocused.

FIG. 4 is a block diagram showing a configuration of a conventional wire rod division control device for dividing the entire length of the coil 4 into two parts by the above-described cutting machine.

In the figure, a pulse generator 14 is connected to a driving motor of the wire rod finishing mill 2, a pulse transmitter 15 is connected to a driving motor of the laying head 3, and a pulse transmitter 16 is connected to a driving motor of the conveyor 5. ing. A material detector 18 for detecting the wire is provided on the exit side of the wire finishing mill 2, and a material detector 19 for detecting the wire is also provided at the end of the coil 4, that is, on the entry side of the coil concentrator 7. ing.

The wire tracking means 20 counts the output pulses of the pulse transmitter 14 after the material detector 18 detects the material, and outputs a signal U when the leading end of the wire is developed on the conveyor 5; The output pulse of the pulse transmitter 15 is counted from the output of the signal U, and the signal V is output when the two division points are developed on the conveyor 5.
22, a tip detection system including a setting unit 23 and a coincidence detection circuit 24,
Contact 25, pulse counter 26, setting device 27 and coincidence detection circuit
It is a division point detection system consisting of 28.

The conveying amount setting means 30 counts the output pulses of the pulse transmitter 16 after the wire tracking means 20 generates the signal U, and ends the counting when the wire tracking means 20 generates the signal V; The count value is stored, and is composed of a contact point 31 and a pulse counter 32.

The transport amount detecting means 40 counts the output pulses of the pulse transmitter 16 after the material detector 19 detects the material, and comprises a contact point 41 and a pulse counter 42.

A subtractor 69 subtracts the count value of the transport amount detecting means 40 from the count value stored in the transport amount setting means 30, and when the deviation becomes zero, the iris driving device 12 and the cutting device driving device. 13 is given a disconnection command.

Hereinafter, the operation of the wire rod division control device will be described. When the leading end of the wire 1 exiting the wire finishing mill 2 is detected by the material detector 18, the contact 21 closes and the pulse counter 22 starts counting the output pulses of the pulse transmitter 14.
The setter 23 is set with a wire moving distance L ₁ from the material detector 18 to expansion point of the conveyor 5, the coincidence detection circuit 24
Compares the count value of the pulse counter 22 with the set value of the setting device 23, and outputs a signal U indicating that the leading end has been developed on the conveyor 5 when the values match.

When the coincidence detecting circuit 24 outputs the signal U, the contact 25 closes and the pulse counter 26 starts counting the output pulses of the pulse transmitter 15. The distance L from the tip of the wire 1 to the two division points is set in the setting device 27, and the coincidence detection circuit 28 compares the count value of the pulse counter 26 with the setting value of the setting device 27, and the two values match. Sometimes 2 split points are on conveyor 5
Is output. In this case, the number of generated pulses per rotation of the pulse transmitter 15 is P ₁ , the gear ratio between the electric motor for driving the racing head and the racing head 3 is a, and the coil diameter formed by the racing head 3 is D. Then, the pulse number P until the two division points are developed on the conveyor 5 is as follows.

[0013] However It is.

Therefore, if the value of K · L is set in the setting unit 27, when the coincidence with the count value of the pulse counter 26 is detected, the two division points of the wire 1 are developed on the conveyor 5. .

On the other hand, when the leading end of the wire 1 is spread on the conveyor 5 and the signal U is output, the contact 31 of the transport amount setting means 30 is closed, and the two division points of the wire 1 are spread on the conveyor 5 and the signal V is output.
Is output, the contact 31 is opened. Pulse counter 32
During this period, the output pulses of the pulse transmitter 16 are counted, and the final count value is stored. That is, the length from the leading end of the wire 1 to the two dividing points is converted into the transport amount of the conveyor 5 and stored.

When the coil 4 formed in a ring shape is conveyed by the conveyor 5 and its tip is detected by the material detector 19, the contact point 41 of the conveyance amount detecting means 40 is closed. This contact 41
While is closed, the pulse counter 42 counts the output pulses of the pulse transmitter 16.

The subtractor 69 sequentially subtracts the count value of the pulse counter 42 of the carry amount detection means 40 from the count value of the pulse counter 32 of the carry amount setting means 30. When the value becomes zero,
A drive command is given to the iris drive device 12 and the cutting machine drive device 13.

As a result, when the two division points of the wire 1 arrive at the position of the cutting machine 11 in the coil focusing device 7, the coil 4
Is performed.

[0019]

The above-mentioned conveyor 5 is blown from a fan (not shown) to control the temperature of the focusing coil product. However, in recent years, for the purpose of improving the quality of products, two conveyors are arranged vertically, and air is blown on each conveyor to perform strict temperature control.

Incidentally, the temperature of the leading end portion of the wire is lower than that of the steady portion, so that the transport speed must be increased to suppress the cooling. For this reason, if the speed of the conveyor that is transporting the leading end is increased, a speed difference occurs with other conveyors. Then, in a situation where the speed of the upstream conveyor is low and the speed of the downstream conveyor is high, the transfer state of the ring-shaped coil between the conveyors changes, and even if the pulses corresponding to the operation of the conveyor drive motor are counted, the wire rods are not moved. May not match length.

In the conventional wire rod division control device described above, since both the conveyance amount setting means 30 and the conveyance amount detection means 40 count the output pulses of the pulse transmitter 16, the two-part accuracy is relatively high. Was.

However, when the number of conveyors becomes two, the conveyance amount setting means 30 counts the pulses associated with the operation of the upstream conveyor, and the conveyance amount detection means 40 counts the pulses of the downstream conveyor. There was a problem that good two-part accuracy could not be obtained.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a wire division control device capable of maintaining the division position accuracy even when the conveyance conditions of two conveyors are different. And

[0024]

According to the present invention, a wire rod discharged from a rolling mill is formed into a ring shape by a laying head.
In the wire rod division control device, which is sequentially conveyed by the first and second conveyors, guided to the coil concentrator, and the division point separated by a predetermined length from the tip of the wire rod is cut by a cutting machine provided in the concentrator. Rolling mill, laying head,
Pulse generating means for detecting that the first and second conveyors have been driven and generating pulses, material detecting means for detecting a wire at the output side of the rolling mill and the input side of the convergence device, respectively; From the wire detection on the exit side of the, the pulse corresponding to the drive of the rolling mill and the pulse corresponding to the drive of the first conveyor were counted, and the leading end and the dividing point of the wire were developed on the conveyor, respectively, and at the conveyor boundary Wire rod tracking means for detecting that the wire has arrived, and transport amount setting means for counting pulses corresponding to the drive of the first conveyor and storing the count value until the dividing point is developed after the leading end of the wire is developed on the conveyor. And conveyance amount detecting means for counting the number of pulses corresponding to the drive of the second conveyor after the material detector on the input side of the focusing device detects the wire, and after the leading end of the wire reaches the conveyor boundary. Until the dividing point reaches the conveyor boundary, the pulses corresponding to the driving of the first conveyor are counted and stored, and the pulses corresponding to the driving of the second conveyor are counted and stored. Correction command means for correcting the count value of one of the transport amount setting means and the transport amount detection means in accordance with the above, and giving an operation command to the cutting machine when the correction value matches the other count value. Configuration.

[0025]

According to the present invention, the number of pulses corresponding to the drive of the first conveyor is counted and stored until the dividing point reaches the conveyor boundary after the leading end of the wire reaches the conveyor boundary, and the pulse of the second conveyor is counted. Counts pulses according to driving,
By storing, the difference between the average speeds of the two conveyors is detected. In this case, when the speed of the conveyor is high, the amount of the transport wire is small, and when the speed of the conveyor is low, the amount of the transport wire is large. Therefore, the count value of the transport amount setting means for counting when the leading end is transported at a higher speed is corrected to increase according to the speed ratio,
Alternatively, the count value of the transport amount detecting means, which counts when the transport speed is reduced and the stationary portion is transported, is reduced and corrected according to the speed ratio, and when the corrected value matches the other uncorrected count value, an operation command is issued to the cutting machine. So that 2
Even when the conveyor conditions of the two conveyors are different, the division position accuracy can be maintained.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, the same elements as those of the conventional apparatus shown in FIG. Here, the conveyor 6 is arranged downstream of the conveyor 5,
The output pulses of the pulse transmitter 16 coupled to the drive motor of the conveyor 5 are counted by the transport amount setting means 30, while the output pulses of the pulse transmitter 17 coupled to the drive motor of the conveyor 6 are counted by the transport amount detection means 40. Count.

Further, as compared with FIG. 4, a wire tracking means 50 is additionally provided, and a correction command means 60 having the aforementioned subtractor 69 as an internal element is provided. Among these, the correction command means 60 outputs the signal R when the tip of the wire 1 reaches the boundary between the conveyor 5 and the conveyor 6, that is, the conveyor boundary, and the two division points of the wire 1 reach the conveyor boundary. A contact 51, a pulse counter 52, a setting unit 53, and a coincidence detection circuit 54 are provided as a detection system at the tip, and a contact 55, a pulse counter 5 is provided as a detection system for the two division points.
6, a setting device 57 and a coincidence detection circuit 58 are provided.

The correction commanding means 60 counts the output pulses of the pulse transmitter 16 from the time when the leading end of the wire 1 reaches the conveyor boundary to the time when the two division points reach the conveyor boundary, stores the output pulses, and stores and counts the pulses. Similarly, the contact pulse 61 for obtaining ₁ and the pulse counter 62 and the conversion memory 63, and the output pulse of the pulse transmitter 17 from the end of the wire 1 reaches the conveyor boundary until the dividing point reaches the conveyor boundary. A contact 64 for counting and storing this to obtain the speed v ₂ , a pulse counter 65 and a conversion storage 66, a calculator 67 for calculating a ratio of these speeds, and a count value of the pulse counter 32 based on the ratio And a subtractor 69 that subtracts the count value of the pulse counter 42 from the output of the multiplier 68 and outputs a disconnection command when the value becomes zero. .

The operation of the embodiment constructed as described above will be described below focusing on the differences from the conventional apparatus.

First, when the leading end of the wire 1 is developed on the conveyor 5, the wire tracking means 20 outputs a signal U. When the two division points are developed on the conveyor 5, the wire tracking means 20 outputs a signal V.

Next, in response to the output of the signal U, the contact 51 closes and the pulse counter 52 counts the output pulses of the pulse transmitter 16. The setter 53 is transferred distance L ₂ of the conveyor 5 is set, the coincidence detection circuit 54 outputs a signal R when the this set value and the count value of the pulse counter 52 matches.
Further, in response to the output of the signal V, the contact 55 is closed and the pulse counter 56 counts the output pulses of the pulse transmitter 16. The setter 57 is set with a transfer distance L ₂ of the conveyor 5 also, the coincidence detection circuit 58 outputs a signal S when the this set value and the count value of the pulse counter 56 matches. That is,
The wire tracking means 50 outputs a signal R when the leading end of the wire 1 reaches the conveyor boundary, and outputs a signal S when the two division points of the wire 1 reach the conveyor boundary.

Next, the contacts 61 and 64 are closed by the output of the signal R, and these contacts are opened by the output of the signal V. Then, while the contact 61 is closed, the pulse counter 62 counts the output pulses of the pulse generator 16, translation storage 63 stores converted into average velocity v ₁ of the conveyor 5 on the basis of its terminal count . Further, while the contact 64 is closed, the pulse counter 65 counts the output pulses of the pulse transmitter 17, and the conversion memory 65 stores the average speed v of the conveyor 6 based on the final count value.
Convert to ₂ and store. The calculator 67 calculates a speed ratio of v ₂ / v ₁ for these stored values. The multiplier 68 corrects the count value by multiplying the speed ratio v ₂ / v ₁ to the count value of the pulse counter 32. The subtractor 69 sequentially subtracts the count value of the pulse counter 42 from the corrected count value, and outputs a disconnection command when the difference becomes zero. Thus, the correction command means 60
Calculates the speed ratio between the conveyor 5 and the conveyor 6, and
The count value of the transport amount setting means 30 is corrected according to this speed ratio, and when the corrected value matches the count value of the transport amount detection means 40, an operation command is given to the cutting machine.

In the above embodiment, the pulse counter 6
Although each of the count values 2 and 65 is converted into a speed and stored, the same result is obtained by storing the count value as it is and calculating the ratio between the two.

In the above embodiment, the transport amount setting means 30
The speed ratio is multiplied by the count value of the pulse counter 32 that constitutes the transfer amount detecting means 40 instead of the reciprocal of the speed ratio.
It is apparent that the same correction as described above can be performed by sequentially multiplying the count value of the pulse counter 42 constituting

Further, in the above-described embodiment, the case where the wire is divided into two parts has been described. However, it is needless to say that the present invention is not limited to the two parts, but can be applied to more parts.

[0036]

As is apparent from the above description, according to the present invention, the average speed of the two conveyors from when the leading end of the wire reaches the conveyor boundary to when the dividing point reaches the conveyor boundary is calculated. According to the speed ratio, the count value of one of the transport amount setting means and the transport amount detection means is corrected, and when the corrected value matches the other count value, an operation command is given to the cutting machine. Because
Even when the transfer conditions of the two conveyors are different, the accuracy of the division position can be maintained.

[Brief description of the drawings]

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

FIG. 2 is a schematic configuration diagram of a wire rod processing line to which the present invention is applied.

FIG. 3 is an explanatory diagram for explaining details of a cutting operation to which the present invention is applied;

FIG. 4 is a block diagram showing a configuration of a conventional wire rod division control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wire rod 2 Wire finishing rolling mill 3 Laying head 4 Coil 5, 6 Conveyor 7 Coil bundling device 11 Cutting machine 14-16 Pulse transmitter 18, 19 Material detector 20, 50 Wire rod tracking means 30 Conveyance amount setting means 40 Conveyance amount Detection means 60 Correction command means

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B21C 47/14 B21C 47/26

Claims (1)

(57) [Claims] 1. A wire coming out of a rolling mill is formed into a ring shape by a laying head, sequentially conveyed by first and second conveyors, guided to a coil concentrator, and separated by a predetermined length from the tip of the wire. In the wire rod division control device that cuts the divided point by the cutting machine provided in the focusing device, it is detected that the rolling mill, the laying head, and the first and second conveyors are driven, and each of the pulses is detected. Pulse generating means to be generated, Material detecting means for detecting a wire at the output side of the rolling mill and at the input side of the convergence device, and From the wire detection at the output side of the rolling mill, according to the drive of the rolling mill The pulse and the pulse corresponding to the drive of the first conveyor are counted, and the leading end and the dividing point of the wire rod have been developed on the conveyor, respectively, and have reached the conveyor boundary. A wire rod tracking means for detecting, a transport amount setting means for counting pulses corresponding to the drive of the first conveyor and storing a count value until the split point is developed after the leading end of the wire is developed on the conveyor, Transport amount detecting means for counting pulses according to the drive of the second conveyor after the material detector on the input side of the focusing device detects the wire, and a dividing point after the tip of the wire reaches the conveyor boundary. The pulse corresponding to the drive of the first conveyor is counted and stored until reaching the conveyor boundary, and the pulse corresponding to the drive of the second conveyor is counted and stored, and the transfer is performed according to the ratio of these two count values. Correction command means for correcting one of the count values of the amount setting means and the conveyance amount detection means, and giving an operation command to the cutting machine when the correction value matches the other count value. Wire division control apparatus according to claim.