CN113286671A

CN113286671A - Method and device for controlling reforming groove in wire coil production line

Info

Publication number: CN113286671A
Application number: CN202080008635.XA
Authority: CN
Inventors: 后藤健吾; 斋藤宏人; 高桥守申; 板桥司
Original assignee: JFE Steel Corp
Current assignee: JFE Steel Corp
Priority date: 2019-01-10
Filing date: 2020-01-10
Publication date: 2021-08-20
Anticipated expiration: 2040-01-10
Also published as: WO2020145390A1; JP6984618B2; JP2020110816A; CN113286671B

Abstract

The disclosed device is provided with: a coil rear end position calculation step (SR1, ST2, ST3) of calculating a coil (C) of a wire material continuously collected in a coil plate (16) and manufactured by an upstream apparatus_W1) The position of the coil rear end (Cb) of (1) is calculated; an arrival time calculation step (ST3) for calculating an arrival time (Hb) at which the coil rear end position reaches the reforming chamber (5); and a coil plate lowering control step (ST4, ST5) for lowering the coil plate at the time point when the arrival time is reached.

Description

Method and device for controlling reforming groove in wire coil production line

Technical Field

The present invention relates to a method and an apparatus for controlling a reforming bath in a wire coil production line, and more particularly, to a method and an apparatus for controlling the timing of lowering a coil plate of a reforming bath for collecting a wire coil.

Background

In a wire coil production line, a wire rod rolled by a wire rod rolling mill is formed into a continuous loop by a laying head to form a wire coil, and the wire rod is unwound and conveyed on a conveyor. The wire coil conveyed by the conveyor is collected by a coil collecting device (hereinafter referred to as a reforming tank) disposed at the end of the conveyor. Then, the wire coil collected in the reforming tank is conveyed out of the production line (see, for example, patent document 1).

The reforming tank is provided with: a nose cone that positions the wire coil by passing the wire coil conveyed from the conveyor; a baffle plate which is configured to move forward and backward freely towards the lower periphery of the nose cone and temporarily stores the wire coil; and a coil plate which is disposed below the baffle plate so as to be movable in the vertical direction and collects the wire coil (see, for example, patent document 2).

Here, the baffle of the reforming groove is formed by a plurality of baffle arms disposed at intervals in a circumferential direction surrounding the lower outer periphery of the nose cone, and if the plurality of baffle arms advance toward the lower outer periphery of the nose cone, the leading ends of the baffle arms enter nose cone holes provided in the lower outer periphery of the nose cone. If the baffle arm of the reforming groove advances and the baffle closes when the front end enters the nose cone hole, the wire coil passing through the nose cone is temporarily stored in the baffle. When the shutter is opened when the tip is separated from the nose cone hole and the shutter arm is retracted from the nose cone, the wire coil temporarily stored in the shutter is transferred to the coil plate that is raised to the position below the shutter.

Then, at the time point when the coil rear end of the wire coil is collected in the coil plate and the collection operation of the wire coil is completed, the wire coil is moved downward by the lowering operation of the coil plate and is conveyed out of the production line.

Documents of the prior art

Patent document

Patent document 1: japanese unexamined patent publication No. 6-7840

Patent document 2: japanese unexamined patent publication No. 9-285818

Disclosure of Invention

Technical problem to be solved by the invention

However, when the coil plate collects the wire coil, the nose cone is opened by the opening action of the shutter. Therefore, when the rear end side of the wire coil passes through the nose cone, the coil rear end of the wire coil may enter the nose cone hole and be caught. Thus, when the wire coil is collected on the coil plate of the reforming bath, the operator monitors the hooking of the coil rear end with the nose cone hole.

Patent document 1 mentioned above is a technique of setting a time point when an end of a collected wire coil is cut by a cutting machine provided in a reforming tank, and patent document 2 is a technique of setting a timing of lowering a coil plate when collection of a wire coil having a predetermined outer diameter at the coil plate is completed, in order to correspond to wire coils having a plurality of outer diameters. Patent documents 1 and 2 cannot prevent the rear end of the coil from catching the nose cone hole when the coil plate collects the wire coil.

The present invention has been made in view of the above-mentioned problems that have not been solved by the conventional examples, and an object of the present invention is to provide a method and an apparatus for controlling a reforming groove in a wire coil production line that can prevent a coil rear end of a wire coil from catching a nose cone hole when the wire coil is collected by a coil plate.

Technical solution for solving technical problem

In order to achieve the above object, a method of controlling a reforming groove in a wire coil production line according to an embodiment of the present invention is a method of controlling a reforming groove for collecting a wire coil fed from an upstream device of a wire coil production line. The reforming tank is provided with: a nose cone for positioning the wire coil by passing the wire coil from the upper part; a baffle plate configured to freely move forward and backward toward the lower periphery of the nose cone; and a coil plate which is arranged at a position below the baffle plate in a freely lifting manner and collects the wire coil. The baffle temporarily stores the wire coil by performing a closing operation of entering a nose cone hole provided in the nose cone, and transfers the stored wire coil to the coil plate by performing an opening operation of leaving the nose cone hole. The method of the present invention includes: a coil rear end position calculation step of calculating a coil rear end position of a wire coil manufactured by an upstream apparatus continuously collected in a coil plate; an arrival time calculation step of calculating an arrival time at which the coil rear end position reaches the reforming groove; and a coil plate lowering control step of lowering the coil plate at a time point when the arrival time is reached.

On the other hand, the control device of the reforming groove in the wire coil production line is a control device of the reforming groove that collects the wire coil that is conveyed from the equipment upstream of the wire coil production line. The reforming tank is provided with: a nose cone for positioning the wire coil by passing the wire coil from the upper part; a baffle plate configured to freely move forward and backward toward the lower periphery of the nose cone; and a coil plate which is arranged at a position below the baffle plate in a freely lifting manner and collects the wire coil. The baffle temporarily stores the wire coil by performing a closing operation of entering a nose cone hole provided in the nose cone, and transfers the stored wire coil to the coil plate by performing an opening operation of leaving the nose cone hole. Further, the apparatus of the present invention includes: a coil rear end position calculation unit that calculates a coil rear end position of a wire coil manufactured by an upstream device, the coil rear end position being continuously collected in a coil plate; an arrival time calculation unit that calculates an arrival time at which the coil rear end position reaches the reforming groove; and a coil plate lowering control unit that lowers the coil plate at a time point when the arrival time is reached.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the control method and the control device for the reforming groove in the wire coil production line, the rear end of the coil of the wire coil can be prevented from hooking the nose cone hole when the coil plate collects the wire coil.

Drawings

Fig. 1 is a schematic view showing a wire coil production line according to an embodiment of the present invention.

Fig. 2 is a diagram showing a reforming tank and a reforming tank control unit constituting a wire coil production line according to an embodiment.

Fig. 3 is a flowchart showing a coil plate lowering control process performed by the reforming tank control unit according to the embodiment.

Fig. 4 is a diagram showing a state where the upper baffle of the reforming groove temporarily holds the wire coil according to the embodiment.

Fig. 5 is a diagram showing a state in which the wire coil is transferred from the upper baffle of the reforming groove to the lower baffle of the embodiment.

Fig. 6 is a diagram showing a state in which the wire coil is transferred from the lower baffle of the reforming groove to the coil plate according to the embodiment.

Fig. 7 is a diagram showing a state where the coil plate of the reforming groove of the embodiment is rapidly lowered.

Detailed Description

Next, an embodiment of the present invention will be described with reference to the drawings. In the description of the drawings below, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings are schematic, and it should be noted that the relationship between the thickness and the plane size, the ratio of the thicknesses of the respective layers, the number of stands of the rolling mill, and the like are different from those in the actual case. Therefore, specific thicknesses and dimensions should be judged with reference to the following description. The drawings also include portions having different dimensional relationships or ratios from each other.

The embodiments described below are apparatuses and methods for embodying the technical idea of the present invention, but the technical idea of the present invention is not limited to the following materials, shapes, structures, arrangements, and the like of the constituent members. The technical idea of the present invention can be variously modified within the technical scope defined by the claims described in the claims.

[ constitution of wire coil production line ]

An embodiment of a wire coil production line according to the present invention will be described with reference to fig. 1.

The wire coil production line 1 of the present embodiment includes: a wire rod rolling mill 2 that rolls a wire rod W; a wire feeding unit 3 for forming the wire rod W rolled by the wire rod rolling unit 2 into a ring shapeCoil C_W(ii) a A conveyor 4 for conveying the wire coil C formed in the laying head 3_WUnfolding and conveying; a reforming groove 5 disposed at the end of the conveyor 4 and collecting the wire coil C_W(ii) a A host computer 6 that controls the driving of the wire rolling mill 2, the conveyor 4, and the reforming groove 5; and a reforming tank control unit 10 for inputting data from the upper computer 6 and controlling the driving of the reforming tank 5. The wire coil manufactured in the previous step is denoted by reference symbol C_W1The wire coil manufactured in the next process is denoted by reference character C_W2。

Here, a Hot ingot detector 7(Hot Metal detector: referred to as HMD7) is disposed in the wire rolling mill 2. The change in the detected value of the HMD7 is output to the upper computer 6. The upper computer 6 calculates the position of the tail end of the wire rod W based on the change in the detection value of the HMD7, and outputs information on the position of the tail end of the wire rod W to the reforming-tank control unit 10.

A motor 8 for driving the conveyor 4 is connected to a pulse emitter 9, and an output pulse generated in the pulse emitter 9 is output to the upper computer 6 based on the driving of the motor 8. The upper computer 6 calculates the transport speed of the conveyor 4 based on the output pulse generated by the pulse generator 9, and outputs information on the transport speed of the conveyor 4 to the reforming tank control unit 10.

[ constitution of reforming tank and reforming tank control section ]

Fig. 2 shows the reforming tank 5 of the present embodiment and a reforming tank control unit 10 connected to the upper computer 6 to control the driving of the reforming tank 5.

The reforming tank 5 includes: a chamber 11 having a cylindrical shape with an upper opening; a spindle 12, which is disposed upright in the chamber 11; a nose cone 13 coaxially coupled to an upper end of the mandrel; an upper baffle 14 and a lower baffle 15 which are supported by the cavity 11 and move forward and backward to the nose cone 13; the coil plate 16 moves in the vertical direction while being supported by the chamber 11.

The upper baffle 14 includes: a plurality of

upper baffle arms

17a,17b … disposed at predetermined intervals in the circumferential direction of the cavity 11 and freely arranged to advance and retreat toward the lower outer periphery of the nose cone 13; a plurality of upper

baffle driving parts

18a,18b … for moving the

upper shutter arms

17a,17b … forward and backward. Further, an upper nose cone hole 19 into which the tip ends of the plurality of

upper baffle arms

17a,17b … enter when they advance toward the nose cone 13 is formed in the lower outer periphery of the nose cone 13. The upper flap 14 is closed to temporarily store the wire coil C that is manufactured in the next step and then collected in the coil plate 16_W2。

The lower baffle 15 includes: a plurality of

lower baffle arms

20a,20b … disposed below the cavity 11 at a predetermined interval in the circumferential direction with respect to the upper baffle 14 and disposed to be movable forward and backward toward the lower outer periphery of the nose cone 13; and a plurality of lower

shutter driving units

21a,21b … for moving the

lower shutter arms

20a,20b … forward and backward. Further, a lower nose cone hole 22 into which the leading ends of the plurality of

lower baffle arms

20a,20b … enter when they advance toward the nose cone 13 is formed in the lower outer periphery of the nose cone 13. The lower baffle 15 is closed to temporarily store the wire coil C collected in the previous step_W1Until the coil plate 16 rises to a position below the lower baffle 15.

The coil plate 16 is guided by the chamber 11 to be movable in the vertical direction, and is moved up and down by forward and backward driving of the coil plate driving unit 16 a. Here, the coil plate driving unit 16a is a device capable of moving the coil plate 16 in the vertical direction at high and low speeds.

As shown in fig. 2, the reforming tank control unit 10 includes an upper shutter opening/closing control unit 30, a lower shutter opening/closing control unit 31, and a coil plate ascending/descending control unit 32.

The upper shutter opening/closing control unit 30 outputs a closing operation signal to the plurality of upper

shutter driving units

18a,18b …, and drives the plurality of

upper shutter arms

17a,17b … to advance toward the nose cone 13 by the driving of the plurality of upper

shutter driving units

18a,18b …, and then the tips thereof enter the upper nose cone hole 19. Then, an opening operation signal is output to the plurality of upper

shutter drive portions

18a,18b …, and the plurality of

upper shutter arms

17a,17b … are retracted from the nose cone 13 by the reverse-direction drive of the plurality of upper

shutter drive portions

18a,18b ….

The lower shutter opening/closing control unit 31 outputs a closing operation signal to the plurality of lower

shutter driving units

21a,21b …, and drives the plurality of lower

shutter driving units

21a,21b … to advance the plurality of

lower shutter arms

20a,20b … toward the nose cone 13 and to cause the tips thereof to enter the lower nose cone hole 22. Then, an opening operation signal is output to the plurality of lower

shutter drive portions

21a,21b …, and the plurality of

lower shutter arms

20a,20b … are retracted from the nose cone 13 by the reverse-direction drive by the plurality of lower

shutter drive portions

21a,21b ….

The coil plate raising/lowering control unit 32 outputs a drive signal for raising to the coil plate drive unit 16a to raise the coil plate 16, thereby performing coil plate raising control processing. Then, the coil plate 16 is lowered by outputting a drive signal for downward movement to the coil plate drive unit 16a, and the coil plate 16 is lowered to the carry-out position.

Here, the coil plate lowering control process performed by the coil plate raising and lowering control unit 32 will be described with reference to the flowchart of fig. 3.

First, in step ST1, the information of the position of the tail end of the wire rod W passing through the wire rod rolling mill 2 stored in the upper computer 6 is acquired.

Next, in step ST2, information on the conveying speed of the conveyor 4 stored in the upper computer 6 is acquired.

Next, in step ST3, the wire coil C collected on the coil plate 16 in the current process is predicted and calculated based on the information of the trailing end position of the wire W and the conveying speed of the conveyor 4_W1The coil rear end Cb side reaches the reforming groove 5 at time (arrival time) Hb.

Next, in step ST4, it is determined whether or not the current time has reached the arrival time Hb, and if the current time has reached the arrival time Hb, the process proceeds to step ST5, and if the current time has not reached the arrival time Hb, the coil plate lowering control process is terminated.

In step ST5, a drive signal for downward movement is output to the coil plate drive unit 16a at a high speed, and the coil plate 16 is moved downward to the carrying-out position while being rapidly lowered.

The coil plate lowering control process performed by the coil plate raising and lowering control unit 32 shown in the flowchart S of fig. 3 is repeatedly executed until the current time reaches the arrival time Hb.

The coil rear end position calculating step described in the present invention corresponds to step ST1, step ST2, and step ST3 in fig. 3, the arrival time calculating step described in the present invention corresponds to step ST3 in fig. 3, and the coil plate lowering control step described in the present invention corresponds to step ST4 and step ST5 in fig. 3. The coil rear end position calculating unit described in the present invention corresponds to step ST1, step ST2, step ST3, and the coil plate ascending/descending control unit 31 in fig. 3, the arrival time calculating unit described in the present invention corresponds to step ST3 and the coil plate ascending/descending control unit 31 in fig. 3, and the coil plate descending control unit described in the present invention corresponds to step ST4, step ST5, and the coil plate ascending/descending control unit 31 in fig. 3.

The baffles described in the present invention correspond to the upper baffle 15 and the lower baffle 16, and the nose holes described in the present invention correspond to the upper nose hole 19 and the lower nose hole 22.

[ action and Effect of reforming groove ]

Next, the operation and operational effects of the reforming tank 5 of the present embodiment will be described with reference to fig. 4 to 7.

As shown in fig. 4, although the wire coil C_WThe coil plate 16 once lowered to the carrying-out position is collected, but it has been considered as a wire coil carried out to the outside. Then, the upper flap opening/closing control section 30 controls the upper flap opening/closing control section to cause the distal ends of the

upper flap arms

17a,17b of the upper flap 14 to enter the upper nose cone holes 19 of the nose cone 13 to perform the closing operation of the upper flap 14, thereby feeding the wire coil C fed from the conveyor 4_W1While being positioned by the nose cone 13, the upper baffle 14 is temporarily stored.

Next, as shown in fig. 5, the coil plate 16 is raised up to the wire coil C_W1Before the collection position, the upper flap 14 is opened by the control of the upper flap opening/closing control section 30, and the lower flap 15 is closed by the control of the lower flap opening/closing control section 31, whereby the wire coil C is wound_W1From the upper baffle 14 to the lower baffle 15.

Next, as shown in fig. 6, after the coil plate 16 is lifted to the collection position, the lower flapper opening/closing control unit controls the lower flapper opening/closing unit to open and close the lower flapper31, the lower flap 15 is opened, and the wire coil C stored in the lower flap 15 is wound_W1Transferred to coil plate 16, wire coil C_W1Gradually collecting in the coil plate 16.

Here, the coil plate ascending/descending control section 32 calculates the wire coil C based on the position of the trailing end of the wire W stored in the upper computer 6 and the conveying speed of the conveyor 4_W1The coil rear end Cb side of (b) reaches the arrival time Hb of the reforming chamber 5 (step ST3 in fig. 3). Then, at the time point when the current time reaches the arrival time Hb, the coil plate ascent and descent control unit 32 outputs a drive signal for the downward movement to the coil plate driving unit 16a at a high speed (step ST5 in fig. 3).

The wire coil C is collected by moving downward at a high speed by the coil plate driving unit 16a as shown in FIG. 7_W1The coil plate 16 performs a rapid lowering operation. The speed of the coil plate 16 is in the range of 50mm/sec to 700mm/sec, and the descending distance is about 3 m.

At this time, the wire coil C_W1Reaches the reforming groove 5 at a position above the nose cone 13. The coil rear end Cb passes through the upper nose cone hole 19 and the lower nose cone hole 22 formed in the nose cone 13 at a higher speed by the rapid lowering operation of the coil plate 16. Therefore, the coil rear end Cb enters the upper nose cone hole 19 and the lower nose cone hole 22 without a risk of being caught.

Then, the coil plate 16 which is rapidly lowered is lowered to the carrying-out position, and the wire coil C which has been collected on the coil plate 16 is completed_WIs carried out to the outside.

Therefore, in the present embodiment, the wire coil C is used_W1The coil rear end Cb of (1) performs the rapid lowering operation of the coil plate 16 at the time point when the position above the nose cone 13 reaches the reforming groove 5, and the rapid lowering operation of the coil rear end Cb by the coil plate 16 passes through the upper nose cone hole 19 and the lower nose cone hole 22 formed in the nose cone 13 at a higher speed, so that there is no risk of catching the upper nose cone hole 19 and the lower nose cone hole 22. Thus, the wire coil C is completed on the coil plate 16 of the reforming tank 5_W1Does not require monitoring by an operator at the time of collection, and thus can realize the wire rod line in the reforming bath 5Ring C_W1The efficiency of the collecting operation is improved.

In the present embodiment, the wire coil C is used_W1The coil rear end Cb of (1) is a point of time when reaching the reforming groove 5 when being positioned above the nose cone 13, but the wire coil C may be used_W1The time point when the coil rear end side of (2) has 5 to 6 turns is reached to the reforming groove 5. Preferably, the wire coil C may be used_W1The time point when the coil rear end side of (2) has 3 to 4 turns is reached to the reforming groove 5.

Description of the reference numerals

1, a wire coil production line;

2, a wire rod rolling machine;

3, a laying head;

4, a conveyor;

5 reforming the tank;

6, a host computer;

7 HMD；

8a motor;

9 a pulse emitter;

10 a reforming tank control unit;

11 cavities;

12 a mandrel;

13, a nose cone;

14, an upper baffle plate;

15 lower baffle plate;

16 coil plates;

16a coil plate driving section;

17a,17b upper baffle arms;

18a,18b upper baffle driving part;

19, arranging a nose cone hole;

20a,20b lower baffle arms;

21a,21b lower baffle driving part;

22 lower nose cone hole;

30 upper baffle open/close control part;

31 a lower baffle plate opening and closing control part;

32 coil plate ascending and descending control parts;

a W wire;

C_Wa wire coil;

C_W1a wire coil of the current process;

C_W2a wire coil of the next process;

a coil rear end of the Cb wire coil;

hb arrival time.

Claims

1. A method for controlling a reforming groove in a wire coil production line for collecting a wire coil fed from an apparatus upstream of the wire coil production line,

the reforming tank is provided with: a nose cone for positioning the wire coil by passing the wire coil from the top; a baffle plate configured to freely move forward and backward toward the lower outer periphery of the nose cone; a coil plate which is arranged at a position below the baffle plate in a freely lifting manner and collects a wire coil; the baffle temporarily holds the wire coil by performing a closing operation into a nose cone hole provided in the nose cone, and transfers the held wire coil to the coil plate by performing an opening operation out of the nose cone hole,

the method for controlling the reforming tank includes:

a coil rear end position calculation step of calculating a coil rear end position of the wire coil manufactured by the upstream apparatus continuously collected in the coil plate;

an arrival time calculation step of calculating an arrival time at which the coil rear end position reaches the reforming groove;

a coil plate lowering control step of lowering the coil plate at a time point when the arrival time is reached.

2. The control method of a reforming groove in a wire coil production line according to claim 1,

the upstream equipment of the wire coil production line is provided with:

a wire rod rolling machine which rolls a wire rod;

a laying head for forming the wire rod rolled by the wire rod rolling mill into a ring shape to form a wire rod coil;

a conveyor that spreads and conveys the wire coil formed in the laying head and supplies the wire coil to the reforming tank at the end;

the coil rear end position calculating step calculates the coil rear end position of the wire coil based on a change in a temperature detection value of a hot ingot detector disposed in the wire rolling mill.

3. The control method of a reforming groove in a wire coil production line according to claim 2,

the coil rear end position calculating step calculates the coil rear end position of the wire coil based on a change in a temperature detection value of a hot ingot detector disposed in the wire rolling mill and a conveying speed of the conveyor.

4. A control device for a reforming groove in a wire coil production line, which is a control device for a reforming groove for collecting a wire coil fed from an upstream facility of the wire coil production line,

the control device for the reforming tank comprises:

a coil rear end position calculation unit that calculates a coil rear end position of the wire coil manufactured by the upstream device, the coil rear end position being continuously collected in the coil plate;

an arrival time calculation unit that calculates an arrival time at which the coil rear end position reaches the reforming groove;

and a coil plate lowering control unit that lowers the coil plate at a time point when the arrival time is reached.

5. The control device of the reforming groove in the wire coil production line according to claim 4,

the upstream equipment of the wire coil production line is provided with:

a wire rod rolling machine which rolls a wire rod;

a laying head that forms the wire rod rolled by the wire rod rolling mill into a ring shape to form a wire rod coil;

the coil rear end position calculation unit calculates a coil rear end position of the wire coil based on a change in a temperature detection value of a hot ingot detector disposed in the wire rolling mill.

6. The control device of a reforming groove in a wire coil production line according to claim 5,

the coil rear end position calculation unit calculates a coil rear end position of the wire coil based on a change in a temperature detection value of a hot ingot detector disposed in the wire rolling mill and a conveying speed of the conveyor.