JPH06520A - Speed reference generating device for continuous treating equipment - Google Patents

Abstract

PURPOSE:To control a rolling speed to a fixed value by adequately and automatically setting the maximum speed of a rolling mill constituting a continuous treating equipment. CONSTITUTION:A speed reference of an inlet side equipment 1 supplying material continuously, a speed reference of a middle equipment 4 treating the material supplied from this inlet side equipment 1 and speed references of rolling mills 7 of an outlet side equipment 6 which rolls and coils the material supplied from the middle equipment 4 are calculated based on the maximum speed set to each equipment and the speed references of the front and rear equipments are corrected in proportion to the respective material lengths of an inlet side looper 5 and an outlet side looper 10 which store delivered differences of the material between the equipments. A speed pattern through which a unit schedule period of the mills 7, the inlet side equipment 1, the middle equipment 4 and the outlet side equipment 6 display the respective maximum capacities is obtained and average speed calculating means 16, 17, 18 calculating the average value of the speeds of these equipments based on this speed pattern, a selecting means 19 selecting the maximum of the average values of these speeds, a maximum speed calculating means 20 calculating the maximum speed set to the outlet side equipment 6 by the selected average value are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous processing facility for continuously processing materials, and in particular, calculates and corrects a speed reference of each facility arranged to include a rolling mill at the final stage of continuous processing. Speed reference generator.

[0002]

2. Description of the Related Art FIG. 3 is a schematic diagram of a continuous processing facility to which the present invention is applied. In the figure, the input side equipment 1 comprises a pay-off reel 2 and a welding machine 3, receives a hot-rolled coil as a material, and welds the leading end of the succeeding coil to the rear end of the preceding coil by the welding machine 3 to form a central equipment. Supply to 4. The central facility 4 is a process line consisting of a pickling tank or a continuous annealing furnace and a slitter. An entrance looper 5 that stores the difference in coil delivery is provided between the entrance equipment 1 and the central equipment 4. On the other hand, the coil processed by the central equipment 4 is supplied to the outlet equipment 6. The delivery side equipment 6 comprises a rolling mill 7, a shear 8 and a tension reel 9.
Among them, the rolling mill 7 rolls the coil to manufacture a thin coil having a predetermined thickness. The shear 8 cuts the thin coil into a predetermined length. The tension reel 9 winds this coil.
Further, between the central equipment 4 and the outlet equipment 6, an outlet looper 10 for storing the difference in coil delivery is also provided.

FIG. 3 calculates the speed reference of the entrance side equipment 1, the speed reference of the central equipment 4, and the speed reference of the rolling mill exit side (the speed reference of the exit side equipment 6) constituting this continuous processing equipment. FIG. 3 is a block diagram showing a configuration of a speed reference generator that corrects these speed references. This speed reference generator is a maximum speed V _{E, MAX of} the entrance side equipment, which is calculated and set by a host computer (not shown), and a maximum speed V of the central equipment.
_{C, MAX} and the maximum speed V _{MD, MAX} of the rolling mill exit side set by the operator, and the entry side looper length and the exit side looper length calculated by the material length calculation device (not shown) Calculate and correct.

That is, the entrance-side speed reference calculation means 11 calculates the entrance-side speed reference V _E based on the maximum speed V _{E, MAX} of the entrance-side equipment.
The central speed reference calculation means 12 is the maximum speed V _{C, MAX of the} central equipment.
Based on the central speed reference V _C , rolling mill speed reference calculation means
13 calculates the speed reference V _MD on the rolling mill exit side on the basis of the maximum speed V _{MD, MAX} on the rolling mill exit side, while the entry side looper length control means 14 deviates the entry side looper length from a predetermined range. Correct the entry speed reference V _E and the center speed reference V _{C so} that
The exit side looper length control means 15 corrects the center speed reference V _C and the speed reference V _MD on the exit side of the rolling mill so that the exit side looper length does not deviate from a predetermined range.

[0005]

In a continuous processing facility of this type including a rolling mill as a delivery facility, it is important to keep the rolling mill speed constant for a unit rolling schedule period. However, in the above speed reference generator, the host computer sets the maximum speed V _{E, MAX} of the entrance side equipment from the ability to send the coils from the payoff reel 2 one after another, and then the pickling tank or the continuous annealing furnace. Although the maximum speed V _{C, MAX} of the central equipment is set from the maximum processing speed for each coil in the above, the maximum speed V _{MD, MAX} on the delivery side of the rolling mill is set at the operator's discretion. The maximum speed V _{MD, MAX} was sometimes too large. In such a case, the entrance side equipment 1 and the exit side equipment 6 cannot follow, the material length of the entrance side looper 5 or the exit side looper 10 exceeds an appropriate range, and the rolling mill is finished before the unit rolling schedule is completed. There was a problem that we had no choice but to correct the speed standard of.

The present invention has been made to solve the above-mentioned problems, and makes it possible to perform constant rolling speed control by appropriately and automatically setting the maximum speed of the rolling mill added to the rolling mill speed reference calculation means. The purpose is to obtain a speed reference generator for continuous processing equipment.

[0007]

DISCLOSURE OF THE INVENTION The present invention is a central facility for carrying out processing such as cleaning, annealing, and slitting of the material supplied from the inlet side equipment, the speed standard of the inlet side equipment for continuously supplying the material. And the speed standard of the rolling mill of the output side equipment that rolls and winds the material supplied from the central equipment, based on the maximum speed set for each equipment, and between each equipment In the speed reference generator of continuous processing equipment that corrects the speed reference of the equipment before and after according to the material length of the looper that stores the difference of material delivery, the unit rolling schedule period of the rolling mill, the input side equipment, the central equipment and the output equipment. The average speed calculation means that calculates the speed pattern that each side equipment can exert its maximum capacity, calculates the average value of the speed of each equipment based on this speed pattern, and the minimum of the average value of these speeds Select And selection means, in which a maximum speed calculating means for calculating a maximum speed to be set for the output-side equipment using the selected average value.

Further, the speed standard of the pretreatment facility for continuously supplying the material and the speed standard of the rolling mill of the posttreatment facility for rolling and winding the material supplied from the pretreatment facility are set for each treatment facility. Calculated based on the maximum speed set by
In the speed reference generator of the continuous processing equipment that corrects the speed reference of each equipment according to the material length of the looper that stores the difference in material delivery between the pretreatment equipment and the posttreatment equipment, the unit rolling schedule period of the rolling mill, The pre-treatment equipment and the post-treatment equipment each obtain a speed pattern at which the maximum capacity is exhibited, and an average speed calculation means for calculating an average value of the speed of each equipment based on this speed pattern, and an average value of these speeds. , And a maximum speed calculation means for calculating the maximum speed set for the post-processing equipment using the selected average value.

[0009]

In the present invention, the unit rolling schedule period of the rolling mill, the speed pattern at which the entrance side facility, the central facility and the exit side facility can exhibit the maximum capacity are obtained, and the average value of the speeds is calculated from each of the speed patterns. , Of the average values of these speeds, the minimum value is selected and the maximum speed of the output side equipment is calculated from the selected average value, thus preventing the situation that the speed standard of the rolling mill is too large. This makes it possible to control the rolling speed constant.

If the continuous processing equipment is composed of a pre-treatment equipment, a post-treatment equipment and a looper, the speed average value of these two equipments is calculated and the smaller one of these speed average values is selected. Since it is set to the maximum speed on the delivery side of the rolling mill, the same effect can be expected in a double facility.

[0011]

The present invention will be described in detail below 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 particular, as shown in FIG.
The present invention is applied to a continuous processing facility including an entrance side looper 5, a central equipment 4, an exit side looper 10 and an exit side equipment 6.

Here, it is assumed that the incoming side average speed calculating means 16 is capable of exerting the maximum capacity without the influence of the incoming side looper 5 on the speed of the incoming side equipment 1, and the unit rolling schedule of the rolling mill. The speed pattern of the entrance side equipment 1 during the period is obtained, and the average speed V of the entrance side equipment 1 is calculated from this speed pattern
_It seeks _{E, AVE} . Further, the central average speed calculation means 17 assumes that the speed of the central equipment 4 is not affected by the entrance looper 5 and the exit looper 10 and can exert its maximum capability, and the unit rolling of the rolling mill is performed. The speed pattern of the central equipment 4 during the schedule period is calculated, and the average speed V _{C, AVE} of the central equipment 4 is calculated from this speed pattern. Further, the output-side average speed calculation means 18 assumes that the speed of the output-side equipment 6 can exert its maximum capacity without being affected by the output-side looper 10, and the rolling mill 7 in the unit schedule period of the rolling mill. _Is calculated, and the average velocity V _{ME, AVE} of the rolling mill 7 is calculated from this pattern. The selecting means 19 selects these average speeds V _{E, AVE} , V.
_{C, AVE} and V _{ME, AVE} are compared, and the minimum value is given to the maximum speed calculation means 20 as the entrance-side average speed V _X of the rolling mill 7.
The maximum speed calculation means 20 comprises a rolling mill entrance side maximum speed calculation means 21 and a rolling mill exit side maximum speed calculation means 22, of which the rolling mill entrance side maximum speed calculation means 21 rolls from the entrance side average speed V _X. The maximum velocity V _{ME, MAX} on the inlet side of the rolling mill 7 is calculated, and the maximum velocity calculating means 22 on the outlet side of the rolling mill performs rolling on the basis of the maximum velocity V _{ME, MAX} on the inlet side and the inlet and outlet thicknesses of the rolling coil. The maximum speed V _{MD, MAX} of the exit side of the machine is calculated and output.

The operation of this embodiment configured as described above will be described below.

The entrance side equipment 1 needs to weld the rear end of the preceding coil and the front end of the succeeding coil. Therefore, the entry side equipment 1 decelerates and stops from the maximum speed in a situation where the maximum capacity is exhibited, welding is performed in a stopped state, and after the completion of welding, the welding speed is accelerated to the maximum speed. The entrance-side average speed calculation means 16 corresponds to the maximum speed V _{E, MAX} of the entrance-side equipment and the unit rolling schedule period of the rolling mill (the moving distance L from the time t _{1 when the} shear 8 cuts the coil to the next cutting). Then, the velocity pattern shown in FIG. 2A is obtained based on the material feeding time t _2E ), and the average velocity V _{E, AVE} is calculated by the following equation.

V _E ,, _AVE = 60 × L / (t _2E −t ₁ ) [mpm] (1) Further, since the central equipment 4 is a process line consisting of a pickling bath or a continuous annealing furnace and a slitter, The coil flows at a certain processing speed, but the line may stop once when the width of the slitter is changed. Therefore, the central average speed calculation means 17 corresponds to the maximum speed V _{C, MAX} of the central equipment and the unit rolling schedule period of the rolling mill (the moving distance L from the time t _{1 when the} shear 8 cuts the coil to the next cutting). Then, the speed pattern shown in FIG. 2 (b) is obtained based on the time t _2C ) at which the material is fed, and the average speed V
Calculate _{C and AVE} .

V _{C, AVE} = 60 × L / (t _2C −t ₁ ) [mpm] (2) On the other hand, the rolling mill 7 rolls the coil to manufacture a thin coil having a predetermined thickness. Since the coil is cut by, the rolling speed must be reduced to the cutting speed for each coil length. Therefore, the exit-side average speed calculating means 18 obtains a speed pattern shown in FIG. 2 (c) on the basis of entry-side maximum velocity V _{ME mill,} to a time t _1, t _2ME for cutting _MAX and coil, the following equation The average speed V _{ME, AVE} on the rolling mill entrance side is calculated by.

[0017] _{V ME, AVE = 60 × L} / (t 2ME -t 1) [mpm] ... (3) Next, selection means 19 the average speed _{V E, AVE, V C,} AVE and V _{ME, AVE} The minimum one is selected as the average speed V _X on the inlet side of the rolling mill.

This is because the equipment with the lowest average speed limits the line speed. Therefore, if this value V _X is taken as the average speed on the inlet side of the rolling mill, at least a constant rolling mill speed except when coil cutting is performed. I will keep it.

Then, the rolling mill entry side maximum velocity calculating means 21 determines the entry side maximum velocity V _{ME, MAX} from this value V _{X in} accordance with an ideal rolling mill operation pattern. The rolling mill speed reference calculation means 13 shown in FIG.
_{MD and MAX} are given. Therefore, the rolling mill output maximum speed calculation means 22 determines the maximum output speed V _{MD of the} rolling mill based on the maximum input speed V _{ME, MAX} of the rolling mill and the input thickness and the output thickness of the rolling coil. _{, MAX} is calculated. The output maximum speed V _{MD, MAX} of the rolling mill calculated in this way is given to the rolling mill speed reference calculation means 13 (see FIG. 4).

Thus, according to this embodiment, it is assumed that the unit rolling schedule period of the rolling mill, the inlet side facility, the central facility and the outlet side facility each exhibit the maximum capacity, and the speed average value of each facility is calculated. Since the minimum of the average speed values of the rolling mill is selected to obtain the maximum rolling mill speed, it is not necessary to make settings based on the experience of the operator, and the rolling mill speed correction due to incorrect setting is avoided. be able to.

In the above embodiment, the continuous processing equipment consisting of the entrance side equipment 1, the entrance side looper 5, the central equipment 4, the exit side looper 10 and the exit side equipment 6 was explained, but the entrance side equipment 1, the entrance side looper 5 and the central equipment 4 are collectively used as pretreatment equipment, and the outlet equipment 6 is used as posttreatment equipment, even if the looper is provided between the pretreatment equipment and the posttreatment equipment. 4 is equipped with the speed reference generator having the configuration shown in FIG. 4, the maximum speed allowed for the post-processing equipment is obtained in the same manner as described above, thereby avoiding the speed correction of the rolling mill due to an erroneous setting by the operator. be able to.

Further, in the above embodiment, the continuous processing equipment for rolling a thin plate has been described, but the present invention is not limited to this application and can be applied to a continuous processing equipment for rolling a linear material. Is clear.

[0023]

As is apparent from the above description, according to the present invention, the unit rolling schedule period of the rolling mill,
Since each equipment calculates the average value of the speed from the speed pattern that can exert the maximum capacity, and selects the smallest of these average values of the speed to calculate the maximum speed of the post-processing equipment, It is possible to prevent a situation in which the speed standard of the rolling mill is too large, and thus the constant rolling speed control becomes possible.

[Brief description of drawings]

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

FIG. 2 is a diagram showing a pattern of the relationship between time and speed for explaining the operation of one embodiment of the present invention.

FIG. 3 is a schematic configuration diagram of a continuous processing facility to which the present invention is applied.

FIG. 4 is a block diagram showing a configuration of a conventional speed reference generator for continuous processing equipment.

[Explanation of symbols]

 1 Entry side equipment 4 Central equipment 5 Entry side looper 6 Exit side equipment 7 Rolling machine 8 Shear 10 Exit side looper 11 Entry side speed reference calculation means 12 Central speed reference calculation means 13 Rolling machine speed reference calculation means 14 Entry side looper length control Means 15 exit side looper length control means 16 entrance side average speed calculation means 17 central average speed calculation means 18 exit side average speed calculation means 19 selection means 20 maximum speed calculation means 21 rolling mill entrance side maximum speed calculation means 22 rolling mill exit side Maximum speed calculation means

Claims (2)

[Claims] 1. A pay-off reel for rewinding a material, which performs a speed reference of an inlet side equipment for continuously supplying the material, cleaning of the material supplied from the inlet side equipment, annealing, slit processing, and the like. The speed reference of the central equipment, and the speed reference of the rolling mill of the output side equipment that rolls and winds the material supplied from the central equipment, is calculated based on the maximum speed set for each equipment, and, The speed reference of the input side equipment and the speed reference of the central equipment are corrected according to the material length of the input side looper that stores the difference in material delivery between the input side equipment and the central equipment, and the central equipment and the output side are also corrected. In the speed reference generator of the continuous processing equipment that corrects the speed reference of the central equipment and the speed reference of the rolling mill according to the material length of the exit looper that stores the difference in material delivery between the equipment, the unit of the rolling mill Rolling schedule Period, the entrance side equipment, the central equipment and the output side equipment each obtain a speed pattern that maximizes the capacity, average speed calculation means for calculating the average value of the speed of each equipment based on this speed pattern, Of the average value of the speeds, the selecting means for selecting the smallest one, and the maximum speed calculating means for calculating the maximum speed to be set for the output side equipment by using the selected average value are provided. A speed reference generator for continuous processing equipment. 2. A speed standard of a pretreatment facility for processing and supplying a material so that it can be rolled, and a speed standard of a rolling mill of a post-treatment facility for rolling and winding the material supplied from the pretreatment facility.
Calculated based on the maximum speed set for each processing equipment, and the speed standard of the pretreatment equipment according to the material length of the looper that stores the difference in material delivery between the pretreatment equipment and the posttreatment equipment. And, in the speed reference generator of the continuous processing equipment for correcting the speed reference of the rolling mill, the unit rolling schedule period of the rolling mill, the pretreatment equipment and the posttreatment equipment each obtain a speed pattern in which the maximum capacity is obtained, An average speed calculating means for calculating an average value of the speeds of the respective facilities based on the speed pattern, a selecting means for selecting one of the average values of the speeds, which has a smaller value, and an average speed selected by using the selected average value. A speed reference generator for continuous processing equipment, comprising: a maximum speed calculating means for calculating the maximum speed for the post-processing equipment.