JP2747143B2 - Zone length measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a zone length measuring device used for measuring the length of each zone constituting a continuous processing line, such as a rolling plant of a steel plant, and more particularly to a zone length measuring apparatus for a continuous processing line. The present invention relates to a zone length measuring device for accurately measuring a zone length for use in point tracking control.

[0002]

2. Description of the Related Art Generally, a continuous processing line of this kind includes:
There are various types of equipment, such as cold rolling equipment in steel plants, plating equipment having multiple plating tanks, and other equipment.For example, in cold rolling equipment, all equipment is divided into multiple zones, while multiple materials are welded. To form a continuous continuous material, and the required processing is performed while continuously moving the plurality of zones. At this time,
It is necessary to change the temperature and tension when the continuous length material reaches a certain point in a certain zone, or to change various control items when the width, thickness, product specifications, etc. of the next material differ from the welded part. However, for this purpose, so-called point tracking for tracking the position of the traveling material is required.

[0003] Therefore, conventionally, a hole is formed near a connection portion of a material, and a hole position detector for detecting the position of the hole and a passage length measuring device for measuring the passage length of the material are installed at necessary places in each zone. And performs point tracking within each zone of the moving material. Here, the point tracking is to accurately track a required point on a material, for example, a position of a specification change point, and for that purpose, a point where a specification change point of a material enters a zone by a hole position detector. After that, the movement length of the material moving in the zone is measured by the passage length measuring device, and it is grasped at which position in the zone the specification change point is always located.

In order to accurately perform the above point tracking, it is necessary to accurately measure the length of each zone of the continuous processing line. However, each of these zones is relatively long, and furthermore, the length of each zone is relatively long. The change of the moving direction is in a meandering state and is very intense. In order to measure the length of each zone of the continuous processing line, the following two types of measuring means are conventionally considered.

[0005] One of them is to detect a hole made in a material by a hole position detector in a preceding zone and then detect a material passage length by a passage length measuring device in contact with the material.
The zone length is determined by a measured value of the passage length measuring device when a hole of the material is detected by the hole position detector of the subsequent zone when the next zone is reached. Another method is a method of calculating the length of each zone of a continuous processing line that is meandering by a human with reference to a design drawing.

[0006]

However, in the former method of measuring the length of the zone using the hole position detector and the pass length measuring device, an error is caused due to a slip between the material and the pass length measuring device. And the length of the zone cannot be accurately determined from the pass length of the material by the pass length measuring instrument.

On the other hand, the latter method of calculating the length of a zone by a person analyzes in detail the distance between each guide roller in the zone, the diameter of each guide roller, and the length of contact of the material with the guide roller. However, since it is necessary to obtain by calculation, it is very complicated and troublesome work.

The present invention has been made in view of the above circumstances, and provides a zone length measuring apparatus capable of accurately and quickly measuring the length of a zone by simply moving a zone of a continuous processing line for a material. It is in.

[0009]

In order to solve the above-mentioned problems, the present invention divides a continuous processing line of a rolling plant into a plurality of zones and grasps a distance between at least two position identification portions. Material is to be moved within said zone.

While the material is moved in the zone of the continuous processing line, when the material travels on the continuous processing line, the zone entrance-side material position for detecting the position of the material from the position identification portion of the running material. In addition to the detector and the zone exit side material position detector, a passage length measurement device that measures the passage length of the material based on the position detection timing from these material position detectors, Zone length correction coefficient calculating means for obtaining a correction coefficient from the actually measured distance between the at least two position identification portions and the distance previously grasped, the zone entrance side material position detector and the zone exit side material position detection The measured zone length obtained from the two material pass lengths measured by the pass length measuring device based on the position detection timing from It provided the zone length arithmetic means for calculating the length of the zone with a positive coefficient, and requests the length of the zone.

[0011]

Therefore, according to the present invention, at least two position identification portions are provided to the material (including the test material) moving in the zone of the continuous processing line by taking the above-described means, and the two positions are determined in advance. If you memorize the distance between the identification parts,
A correction coefficient can be obtained from the actually measured distance between the two position identification portions measured by the passage length measuring device and the known distance that is grasped in advance, and the zone entrance side material position detector and By receiving the position detection timing from the zone exit side material position detector and multiplying the actual measurement zone length obtained from the two material passage lengths measured by the passage length measurement device by the correction coefficient, the material and the passage length measurement device are obtained. Even if there is a slip between them, the slip error can be removed and the zone length can be measured accurately and quickly.

[0012]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram schematically showing a configuration of a continuous processing line to which the present invention is applied. This continuous processing line is divided into a plurality of zones, and the material 1 enters the first zone from the left hand side, progresses in a meandering manner through the guide rollers in each zone, and sequentially moves to each zone on the right hand side. I will do it. The arrow at the right end of the material 1 indicates the traveling direction of the material 1.

The material 1 is a completely integrated continuous length material or a continuous length material obtained by welding and connecting materials of a required length. Zone length or holes 2 ₁ position purpose of detecting the at least two as shown in Figure 2 of the material in the material 1, 2 ₂ have been pierced, shown from the desired point tracking control if necessary Although not shown, holes are drilled at appropriate intervals, for example, in the vicinity of the connection portion of welding or without welding. For convenience of explanation, 2 ₁ a first hole, 2 ₂ was identified as the second hole, and these first holes 2 ₁ and the second hole 2 ₂ distance L is grasped in advance, stores It is assumed that

Further, the hole position detector 3 ₁ at the entrance side and near the outlet side near each zone for detecting the hole positions of the respective materials 1, 3 _2, ... are arranged, these holes detectors 3 _1, 3
_The passage length measuring devices 4 ₁ , 4 ₂ ,.
Is arranged. Incidentally, the hole position detector 3 ₂ also serves as a inlet side hole position detector of the second zone, as well as 3 ₃ 3
The inlet side hole position detector of the second zone is also used. FIG. 3 is a diagram specifically showing one zone for convenience of explaining the zone length using the device configuration described later.

FIG. 4 is a diagram showing the configuration of a measuring apparatus for determining the length of one zone shown in FIG. 11 the count value of the pass length measuring instrument 4 ₁ receives a hole detection signal from the zone inlet side hole position detector 3 ₁ In the drawing, i.e. the first material passage length input means for loading the passage length information, 12 hole positions an information storage unit, a first storage area 1 to store the first hole 2 ₁ a passage length information captured by the passage length measuring instrument 4 ₁ in the storage unit 12 (the first hole location)
2 ₁ and the second hole 2 ₂ pass length information second for storing (second hole position information) of the storage area 12 ₂ is provided.

[0017] 13 is a zone length correction coefficient calculating means for calculating a zone length correction factor, which is two holes 2 _1, 2 ₂
A distance setting unit 14 for setting a known distance L between the first and the first
A zone length correction coefficient is obtained from the two measured hole distances L ′ obtained from the passage length information of the second storage areas 12 ₁ and 12 ₂ and stored in the zone length correction coefficient storage unit 15.

[0018] 16 when receiving a hole detection signal detected from the zone outlet hole position detector 3 ₂ 1 th hole 2 _1, zone length calculating captures passage length information of said material passage length measuring instrument 4 ₁ The second material passage length input means to be sent to the means 17. The zone length calculating unit 17 has a function for obtaining the zone length with the passage length information, said second hole location information of the storage area 12 ₂ and the zone length compensation factor from a second material passage length input means 16 Have. Next, the operation of the device configured as described above will be described.

Now, it is assumed that the material 1 moves in the direction of the arrow shown in FIG. 3 and passes through a certain zone. In this case, zone inlet side hole position detector 3 ₁ detects the first hole 2 ₁ material 1 shown in FIG. 2, and sends the hole detection signal to a first material passage length input means 11. here,
The first material passage length input means 11, the material passes length information from the measured material tip path length measuring device 4 ₁ receives the hole detection timing signal to the first hole 2 ₁ (La = eg 1
Captures 0 m) is stored in the first storage area 12 ₁ of the hole position data storage section 12.

[0020] Subsequently, although the material 1 moves in the zone, thereby zone inlet side hole position detector 3 ₁ detects the second hole 2 _second material 1, the first material passage length input means 11 Send out. Here, this material passage length input means 1
1, the material passage length information from the material from the tip end passage length measuring instrument 4 ₁ until the second hole 2 ₂ material 1 (Lb = e.g. 21
While storing the second storage area 12 ₂ captures m), and sends the second hole detection timing signal to the zone length correction coefficient calculation unit 13.

In the zone length correction coefficient calculating means 13,
Upon receiving the second hole detection timing signal, the two storage areas 12 _1, 12 1 th from ₂ materials 1 hole 2 ₁ and the second hole 2 ₂ according passage length information La, reads Lb, L ' = running Lb-La = 21-10 = 11m becomes operational, with obtaining the Anakan distance L 'of the first hole 2 ₁ a and the second hole 2 _2, exactly that has already been set in the setting unit 14 The following formula is used to calculate the zone length correction coefficient K by using the following formula: K = L / L ′ = L / (Lb−La) = 0.909, and then store it in the zone length correction coefficient storage unit 15. .

Further, when the material 1 moves in the zone,
This time is a zone outlet hole position detector 3 ₂ detects the second hole 2 _second material 1, the hole detection signal is sent to the second material passage length input means 16. The second material passage length input means 16, passes the length of the material 1 and subjected to hole detection timing signal from said path length measuring device 4 ₁ (Lc = e.g. 3
5m) and sends it to the zone length calculating means 17. Here, the zone length calculating unit 17 reads the material passage length information Lb = 21m from the second storage area 12 ₂ until the second hole, Z '= Lc-Lb = 35-21 = 14m comprising measurement zone by computing After obtaining the length Z ', the true zone length Z is obtained by performing an operation of Z = Z'.K using the measured zone length Z' and the zone length correction coefficient K.

[0023] Therefore, according to the configuration of the above-described embodiment, along with at least two holes 2 _1, 2 ₂ are provided with applicable material to the actual continuous processing line including the test material, between the two holes If the known distance L is stored, simply moving the material including the test material in the zone to be measured,
After the zone length correction coefficient is automatically obtained, the true zone length Z can be obtained by multiplying the actual measurement zone length Z 'by the zone length correction coefficient.

Therefore, even if there is a slip between the material 1 and the passage length detector, the slip error can be removed and the zone length can be measured. In addition, the zone length can be reduced by using two holes that have been conventionally drilled. Since the measurement is performed, the zone length can be measured easily and quickly, and the zone length can be accurately measured even in a place where a worker cannot easily enter such as a heating furnace facility or a plating bath facility.

Further, since the zone length is quickly and automatically obtained as described above, the adjustment operation can be completed in a short time even when the zone length in the zone is adjusted or changed. Contribute. In addition, by accurately determining the zone length, it is possible to accurately track the specification change point on the material, that is, the position of the hole, and to perform optimal point tracking control.

In the above-described embodiment, the holes are provided on the material to detect the position of the material, but the point is that it is only necessary to provide a position identification portion such as a mark for detecting a specific position of the material. It is. In addition, although the application example of the cold rolling equipment as the steel plant has been described, the cold rolling equipment is not necessarily required to be the steel plant and can be easily applied to various other industrial fields. Furthermore, in combination with a device for controlling the feeding of the material, the feeding of the material and the measurement of the zone length can be completely automated. In addition, the present invention can be implemented with various modifications without departing from the scope of the invention.

[0027]

As described above, according to the present invention, it is possible to accurately and quickly measure the length of a zone simply by moving a material within a zone of a continuous processing line, thereby obtaining accurate point tracking. Control can be realized.

[Brief description of the drawings]

FIG. 1 is a schematic view of a continuous processing line to which the present invention is applied.

FIG. 2 is a plan view of a material (including a test material) used to determine a zone length.

FIG. 3 is a diagram specifically showing one zone.

FIG. 4 is a configuration diagram showing one embodiment of a zone length measuring device according to the present invention.

[Explanation of symbols]

1 ... material, 2 ₁ , 2 ₂ , ... holes, 3 ₁ , 3 ₂ , ...
… Hole position detector, 4 ₁ , 4 ₂ ,… Pass length measuring device, 1
DESCRIPTION OF SYMBOLS 1 ... 1st material pass length input means, 12 ... Pass length information storage part, 12 ₁ ... 1st storage area, 12 ₂ ... 2nd storage area, 13 ... Zone length correction coefficient calculation means, 15 ... Zone length Correction coefficient storage unit, 16 second material passage length input means,
17 Zone length calculation means.

Claims (1)

(57) [Claims] 1. A zone length measuring device for measuring the length of a zone constituting a continuous processing line, wherein position identification portions are provided at required intervals in advance, and a distance between at least two of the position identification portions is grasped. When the material travels through the continuous processing line, a zone entrance-side material position detector and a zone exit-side material position detector that detect the position of the material from a position identification portion of the traveling material, A pass length measuring device that measures the pass length of the material based on the position detection timing from these material position detectors, and an actual measurement distance between the at least two position identification portions measured by the pass length measuring device. A zone length correction coefficient calculating means for obtaining a correction coefficient from the distance which is grasped in advance; a zone entrance side material position detector; Zone length calculation for obtaining a zone length using the actually measured zone length obtained from the two material passage lengths measured by the passage length measuring device based on the position detection timing from the side material position detector and the correction coefficient And a zone length measuring device.