JPH04197520A - Method and device for carrying out scrap coil wound round tension reel - Google Patents

Abstract

PURPOSE:To shorten time for pulling-out a scrap coil and to improve manufacturing efficiency by clamping the scrap coil with a magnet built in a coil receiving table. CONSTITUTION:The scrap coil 5A is wound round a tension reel 4, and a magnet in the coil receiving table at upper part of a coil car 7A is pressed to the scrap coil 5A and a mandrel in the tension reel 4 is moved little by little and adjusted so as to come to position of the magnet in the coil receiving table. The magnet is turned to 'ON' and the scrap coil 5A is held with the coil car 7A. The coil car 7A is shifted and the scrap coil 5A is pulled out from the mandrel. Banding is executed to the coil 5A under holding condition with the coil car 7A and the coil 5A is bundled. The magnet in the coil receiving table is turned to 'OFF' and the clamp is released and the coil 5A is shifted to the following process with a crane, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a method for discharging strip fill in a strip finishing line.

Conventional technology Normally, in the finishing lines of hot strip factories and cold strip factories, secondary processing such as correcting the flatness of the strip, adjusting the thickness or width of the strip, and checking the presence or absence of surface defects is usually carried out. In order to perform inspections, etc., the coiled slip is unwound and processed, then wound again on a tension reel to form a coil, and then handled using transportation equipment such as a crane for the next process. .

To explain the winding operation of such a strip, for example, as shown in FIG. Afterwards, it passes through a pinch roll 3 and is wound into a coil 5 by a tension reel 4.

However, when the tail end of the strip 1 passes through the pinch roll 3 just before the end of winding, the tension applied to the strip 1 becomes zero, causing the coil 5 to become loose and cause, for example, scratches. A strange phenomenon occurs.

In order to prevent the above-mentioned problems, as shown in FIG. By the time the tail end of strip 1 passes through pinch roll 3, the coil carlow 90 is passed through coil 5.
There is a method in which the tail end is rolled up while being pressed against the wire (for example, Japanese Patent Laid-Open No. 62-24820).

Note that a belt wrapper, a pressing roller, or the like may be used instead of the coil curlrow 96.

By the way, when strip scrap occurs due to defects in board thickness, board width, or surface defects, if the length of the defective part is long to some extent, rather than cutting it as an end plate, it is wound up with a winder and scraped. The method used is to transport it as scrap coil.

However, when pulling out a small diameter scrap coil with only a few turns from the tension reel 4 using a coil kerf, the coils often loosen due to the large springback and the inner diameter becomes large, making it difficult to pull out. The problem is that it is not possible. Therefore, when extracting the scrap coil, the operator must manually intervene and adjust the height of the tension reel 4 and the coil calf to a lower level, which requires a great deal of time and effort. The problem was that it was dangerous.

Therefore, the inventors of the present invention conducted studies aimed at solving the above-mentioned problems, and as a result, they first proposed a method for discharging scrap coils in a strip finishing line.

That is, when a short scrap coil wound on a tension reel is pulled out from the mandrel in a strip finishing line and carried out by a coil car, there is a process of clamping both ends of the scrap coil wound on a tension reel, and A method for carrying out scrap coils in a strip finishing line, which is characterized by the following steps: transferring the coil to a coil car along with the mandrel; and removing a clamp from a bond with a band attached to the scrap coil on the coil car. (See Figure 3).

According to this unloading method, when the scrap coil is pulled out from the tension reel, both edges of the coil are clamped to prevent the winding from loosening, and a band is hung after the coil is pulled out using a coil car, so that the coil is not easily loosened due to springback. It can be carried out reliably without rolling back.

However, according to this method, the number of turns of the scrap coil is small, about 2 to 3 turns, and in the case of a thin plate, there are many cases where it cannot be clamped by the method using a clamping device as described above. was required.

Problems to be Solved by the Invention The purpose of the present invention is to solve the above-mentioned problems. Specifically, the present invention aims to solve the above-mentioned problems. Specifically, a scrap coil of small diameter wound on a tension reel is moved by using a magnet in a coil holder that has a built-in magnet that allows the coil car to move up and down freely. To propose a device for carrying out a scrap coil wound on a tension reel in which the scrap coil can be automatically pulled out from the tension reel without falling off from the coil car due to loosening of the scrap coil after being clamped. With the goal.

Means for Solving the Problems and Their Effects Namely, the present invention provides a means for solving the problem and its operation, in which a small diameter scrap coil wound on a tension reel in a strip finishing line is taken out from a mandrail and carried out by a coil car. A process of pressing a coil holder containing a built-in magnet that allows the coil car to move up and down to stop the rotation of the tension reel, a process of activating a built-in magnet in the coil holder to clamp the scrap coil, and a process of clamping the scrap coil by activating the built-in magnet in the coil holder. A process of expanding and contracting the reel mandrel to hold the scrap coil in the coil car, a process of moving the coil car and extracting the scrap coil from the mandrel, and a process of hooking a band to the scrap coil on the coil car.
It is characterized by the process of turning off the magnet and removing the clamp, and is also characterized by the process of turning off the magnet and removing the clamp. The coil car consists of a coil holder equipped with a built-in magnet that can be raised and lowered at the top of the coil car.
It is characterized by a configuration in which the scrap coil is clamped by a magnet built into the coil holder.

Hereinafter, a detailed explanation of the configuration and the operation of the means of the present invention will be as follows.

The present inventors discovered that when the number of turns of a scrap coil is about 2 to 3 and it is a thin plate, there are many cases in which the scrap coil cannot be clamped even if both ends of the coil are clamped as in the conventional example.
When we investigated ways to solve this problem, we found that the unloading device could be constructed from a coil car equipped with a coil holder with a built-in magnet that can be raised and lowered, and the end face of the coil could be clamped by the magnet.

Further research and development was carried out, and the present invention was established based on this research.

Hereinafter, the present invention will be explained with reference to the drawings.

FIG. 1 is a side view showing an example of a device used in carrying out the present invention, FIG. 2 is a sectional view of FIG. 1, and FIG. 3 is a side view showing an example of a conventional device. FIG. 4 is a side view showing another example of the conventional device.

First, the coil carf A of the apparatus of the present invention shown in FIGS.
It consists of a coil car that is movable on top of the car.

The structure of the magnet built into the coil holder 10 is not particularly limited as long as it is configured to prevent the scrap coil 5A wound on the tension reel 4 from loosening. The upper surface of the coil holder 10 forms a V-shaped surface along the tension reel 4, and four magnets 10a, 10b, 10c, and 10d, two each, can be built in along this V-shaped surface. preferable.

Next, using the coil calf A configured in this way,
The procedure for pulling out the scrap coil 5A from the tension reel 4 will be explained.

tfl First, the entire length of the defective strip is wound onto the tension reel 4 as a scrap coil 5A using a belt wrapper (not shown). At this time, the coil holder 10 on the upper part of the coil calf A is kept on standby under the tension reel 4 in such a state that the upper V-shaped surface of the coil holder 10 can receive the scrap coil 5A.

IgI! After scraping, press the magnets 12a and 12b of the coil holder 10 on the upper part of the coil calf A against the scrap coil 5A, and while stopping rotation, move the mandrel 4a of the tension reel 4 in an inch to remove the tail end of the coil. are the magnets 10a, 10 provided on the V-shaped surface of the coil holder 10.
t), 10c, and 10d.

adjust.

1, '3+ Coil holder 1 above the coil calf
Turn on the magnet 0 and operate it.

+l! rr The mandrel 4a of the tension reel 4 is changed from "expanded" to "retracted", and the scrap coil 5A is gripped by the coil calf A.

Move coil calf A and scrap coil 5.
△ is pulled out from the mandrel 4a.

Lρ1 A band is attached to the scrap coil 5A while it is held by the coil calf A, and the scrap coil 5A is tied together.

1! The magnet of the coil holder 10 is turned off, the clamp is released, and the coil is transferred to the next process using a crane or the like (not shown).

<Effects of the Invention> As explained in detail above, the present invention provides a method for removing small-diameter scrap coils wound on a tension reel in a strip finishing line from a mantle reel and carrying them out by a coil car. The process of stopping the rotation of the tension reel by pressing the coil holder with a built-in magnet that can be freely moved between the coil car valves onto the scrap coil that has been scraped off, and the process of activating the magnet built into the coil holder and scraping. A process of clamping the coil, a process of expanding and contracting the mandrel of the tension reel to hold the scrap coil in the coil car, a process of moving the coil car to pull out the scrap coil from the mandrel, and a process of clamping the scrap coil on the coil car. After hanging, the magnet is turned off and the clamp is removed.
A conveying device used to extract small-diameter scrap coils from a mandrel wound on a tension reel in a strip finishing line, consisting of a coil car equipped with a coil holder on the top of the coil car that has a built-in magnet that can be freely moved between valves. The present invention is characterized in that the scrap coil is clamped by a magnet built into the coil holder.

According to the present invention, the following effects are achieved.

1'f゛ The work of extracting scrap coils from the tension reel can be performed automatically. ・gl The time required to extract scrap coils is shortened, and the production efficiency of the strip coil processing line is improved.

[Brief explanation of the drawing]

FIG. 1 is a side view showing one embodiment of a device used in carrying out the present invention, FIG. 2 is a sectional view of FIG. 1, and FIG. 3 is a side view showing an example of a conventional device. FIG. 4 is a side view of another example of the conventional device. Sign @4... Tension reel 4a...
・Mandrel 5A...Scrap coil 7A...Coil car 10...Coil holder

Claims (1)

[Claims] 1) When a small-diameter scrap coil wound on a tension reel in a strip finishing line is extracted from a mandrail and carried out by a coil car, the scrap coil wound on the tension reel is a step of pressing a coil holder containing a magnet that can be raised and lowered of the coil car to stop rotation of the tension reel; a step of activating a magnet built into the coil holder to clamp the scrap coil; and a step of clamping the scrap coil by activating a magnet built into the coil holder; a step of expanding and contracting the mandrel of the coil car to hold the scrap coil in the coil car; a step of moving the coil car to extract the scrap coil from the mandrel; and a step of applying a band to the scrap coil on the coil car. A method for carrying out a scrap coil wound on a tension reel, comprising the steps of turning off the magnet and removing the clamp. 2) In the conveying device used to extract small diameter scrap coils wound on the tension reel of the strip finishing line from the mandrel, the coil car is equipped with a coil holder on the top of the coil car that has a built-in magnet that can be raised and lowered. 1. A device for carrying out a scrap coil wound on a tension reel, characterized in that the scrap coil is clamped by a magnet built into the coil holder.