JPS6257403B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is suitable for preventing unraveling during the manufacturing process of relatively thin steel strip coils such as cold-rolled thin steel strips and surface-treated thin steel strips. This invention relates to a coil unraveling prevention device.

[Conventional technology]

BACKGROUND ART Conventionally, the coil end of a thin steel strip wound into a coil is fixed to a coil body by the following methods to prevent unwinding.
In other words, (1) a method in which a worker secures the coil end of a coil wound on a tension reel with tape such as duct tape, and (2) a method in which a worker attaches the coil end of a coil that has been removed from the tension reel by a coil car. (3) In (1) and (2) above, a magnet is used instead of the tape to attach the members.

Then, the coil whose coil ends are fixed with tape or magnets as described above is unwound and subjected to various processing such as surface treatment while being attached to a payoff reel in the next step.

Incidentally, the method using a magnet is more advantageous than the method using a tape in that it can be recovered and recycled, and a means for preventing coil unwinding as described in Japanese Utility Model Publication No. 51-31791 has been proposed.

[Problems to be Solved by the Invention] However, the conventional coil winding prevention device using a magnet has the following problems because the magnet is manually attached to the coil.

This requires the worker to go close to the tension reel, which is inconvenient and unfavorable from a safety standpoint.

Some types of coils are strong, and therefore, depending on the position where the magnet is installed, the magnet may be blown off, which is very dangerous.

The next coil winding operation cannot be started until the operator leaves the vicinity of the tension reel, which reduces production efficiency.

Therefore, in order to solve the above problems, it has been desired to mechanize and automate magnet attachment, but it has been extremely difficult to reliably and stably attach magnets to coil ends. For example, it is possible to attach multiple magnets to the coil end by storing multiple magnets in a storage tube and pushing them out one by one, but in this case, when the magnets in the storage tube run out In order to replenish the magnet, the worker must go to the installation location of the device.
If you do not store the magnets in the storage tube taking into consideration the direction of the magnetic poles of the magnets, the magnets will stick together and you will not be able to stably attach the magnets to the coil end. Also, consider the possibility that the coil diameter may change. There are many problems that need to be resolved.

An object of the present invention is to overcome the above conventional problems and mechanically attach a magnet to a coil end reliably and stably.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a coil unraveling prevention device in which a magnet is attached to a coil end so that the coil end can be held in a coil body, in which the magnet can be conveyed. A conveyor device, a magnet holding device capable of holding a magnet on the conveyor device, and a magnet holding device rotatably supporting the magnet holding device and capable of reciprocating the magnet holding device substantially toward the center of the coil. and a rotary drive device provided on the moving device and rotating the magnet holding device to a position facing the conveyor device and approximately in the direction of the center of the coil.

[Function] That is, according to the present invention, by using a conveyor device, magnets can be refilled at a location away from the tension reel, eliminating the danger to the worker from getting close to the tension reel. , the worker does not interfere with the coil winding work. Furthermore, since the magnets on the conveyor device can be visually observed from the operator's cab, there is no need to make a mistake in the timing of replenishing the magnets. Furthermore, since the magnets on the conveyor device are received one by one by the magnet holding device and attached to the coil end, there is no problem such as magnets coming into close contact with each other.
Moreover, when attaching the magnet to the coil end, the magnet held in the magnet holding device is pushed toward the center of the coil by a moving device and a rotary drive device, so the coil diameter changes. The magnet can be reliably attached to the predetermined coil end position.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a partially cutaway side view showing a coil unraveling prevention device according to an embodiment of the present invention, and FIG. 2 is a plan view of FIG. 1.

A coil 3 in which a long thin steel strip is wound can be attached to a take-up shaft 2 of the tension reel device 1. A pedestal 4 is provided below the coil 3. A recess 5 is formed in the pedestal 4, and a coil holder 6 is disposed in the recess 5. Below the recess 5, a coil car 7 for pulling out the coil 3 from the winding shaft 2 is connected to the shaft of the winding shaft 2. It is arranged so that it can freely slide in the direction.

On the other hand, on the upper surface of the pedestal 4, a magnet mounting device is arranged, which includes a conveyor device 10, a magnet holding device 20, a moving device 30, and a rotational drive device (rotary actuator) 28.

The conveyor device 10 is a so-called bed conveyor device, and an annular belt 11 is stretched under a predetermined tension by a plurality of support rollers 13 supported by a frame 12 and a drive roller 14. A drive motor 15 is attached to the drive roller 14.
are connected. A plurality of disk-shaped magnets 40 are placed on the belt 11 of the conveyor device 10 configured in this manner.

Next, details of the magnet holding device 20 and the moving device 30 will be explained using FIG. 3 and FIG. 4.

A board 32 is mounted on the pedestal 4 via a mounting member 31.
is mounted inclined with respect to the upper surface of the pedestal 4, and sliding support members 33, 33 are mounted on this substrate 32.
is provided. These sliding support members 33, 33
A support portion 34 is fixed between them. Guide rods 35, 35 are slidably attached to each of the sliding support members 33, 33, and their respective tips are fixed to a mounting plate 36.

Further, a cylinder device 37 is fixed to the support portion 34, and the piston rod portion 3 of this cylinder device 37 is fixed to the supporting portion 34.
The tip of 8 is fixed to a mounting plate 36. Therefore, as the piston rod 38 of the cylinder device 37 moves, the mounting plate 36 is supported by the guide rods 35 and moves in parallel.

A magnet holding device 20 is provided on the mounting plate 36 . That is, a bearing section 21 is fixed on the mounting plate 36, and a guide member 22 is attached to this bearing section 21 so as to be rotatable in the directions of arrows A and B (see FIG. 4).

A cylinder device 23 is fixed to one end of the guide member 22, and a piston rod portion 24 of the cylinder device 23 extends and projects from the other end. A vacuum pad 2 is attached to the tip of this piston rod portion 24.
5 is attached via a fitting 26, and a compression spring 27 is interposed within the fitting 26. Further, a rotary actuator 28 (rotary drive device) fixed to a mounting plate 36 is connected to the guide member 22 . Further, a vacuum pump (not shown) for sucking the air inside the vacuum pad 25 is provided, and the air inside the vacuum pad 25 is sucked by this vacuum pump.

Next, the operation of the above embodiment will be explained.

Now, the steel strip is on the take-up shaft 2 of the tension reel device 1.
When the required amount of steel strip is wound, the steel strip is cut by a shearing machine (not shown). Thereafter, the winding shaft 2 of the tension reel device 1 is rotated until the coil end 3A of the coil 3 is located slightly below the magnet attachment portion, and then stopped.

The initial state of the magnet holding device 20 and the moving device 30 is as shown in FIG. That is,
The vacuum pad 25 is operated by the rotary actuator 28 to remove the belt 1 of the conveyor device 10.
It is now facing 1. In this state, the cylinder device 23 is operated, and the piston rod portion 24
When protruded, the tip of the vacuum pad 25 comes into contact with the magnet 40 (the state of the magnet 40A shown in FIG. 5). In this state, the magnet 40 is attracted to the vacuum pad 25 by operating a vacuum pump (not shown) and sucking the air inside the vacuum pad 25 to create a negative pressure.

Next, when the cylinder device 23 is operated in the opposite direction to that described above, the magnet 40 is attached to the vacuum pad 25.
The magnet 40 is lifted from the belt 11 in a state where it is attracted (the state of the magnet 40B shown in FIG. 5). After that, the rotary actuator 28
By operating the vacuum pad 25
rotates in the direction of arrow A (see FIG. 4) and faces substantially toward the center of the coil (the state of magnet 40C shown in FIG. 5). In this state, the cylinder device 37 is operated,
The entire magnet holding device 20 is moved toward the coil 3, and the magnet 40 is fixed to the coil end 3A of the coil 3 (the state of the magnet 40D shown in FIG. 5). This state is detected by a proximity switch (not shown) or the like, and the operation of the cylinder device 37 is stopped.

Next, the vacuum system of the vacuum pad 25 is shut off, and atmospheric air or compressed air is sent to release the vacuum inside the vacuum pad 25. After the pressure inside the vacuum pad 25 reaches atmospheric pressure or higher, the cylinder device 37 is retracted to its initial state (FIG. 1).

Then, the magnet 40 is fixed to the coil end 3A.

Next, the drive motor 15 is driven, and the belt 11
By moving the next magnet 40, the next magnet 40 is placed below the magnet holding device 20, that is, the vacuum pad 2
5 and move it to the tip of tension reel device 1.
When a predetermined amount of the coil 3 is wound again around the winding shaft 2, a series of operations similar to those described above are prepared. The initial position of the magnet 40 may be set by controlling the drive motor 15 using a proximity switch (not shown) or the like.

Then, the same operation as described above may be performed every time a predetermined amount of coil 3 is wound around the winding shaft 2 of the tension reel device 1.

According to the above embodiment, it is possible to obtain the following effects. That is, (1) it becomes possible to safely attach the magnet without the worker having to enter the narrow and dangerous line; (2) The manual work can be as simple as arranging the magnets on a belt conveyor device in a safe offline location, and the frequency of magnet replenishment can be reduced by increasing the line length of the conveyor device. becomes possible. (3) Furthermore, since the remaining magnets placed on the conveyor device can be reliably recognized visually, it is possible to accurately determine when to replenish the magnets. (4) Furthermore, since the magnets on the conveyor device are received one by one by the magnet holding device and attached to the coil end, troubles such as magnets coming into close contact with each other do not occur at all. When attaching the magnet to the coil end, the magnet held in the magnet holding device is pushed toward the center of the coil by a moving device and a rotation drive device.
Even if the coil diameter changes, the magnet can be reliably attached to a predetermined coil end position.

In the above embodiment, the magnet 40 is held by the magnet holding device 2 using the vacuum pad 25.
Although the magnet 40 is set to 0, the outer periphery of the magnet 40 may be held in various ways, such as holding the outer periphery with claws.

[Effects of the Invention] As described above, the present invention provides a coil unraveling prevention device in which a magnet is attached to a coil end so that the coil end can be held in a coil body, and a conveyor device that can convey the magnet, and the conveyor. A magnet holding device capable of holding a magnet on the device, a moving device rotatably supporting the magnet holding device and capable of reciprocating the magnet holding device substantially toward the center of a coil, and a moving device. and a rotary drive device that rotates the magnet holding device to a position facing the conveyor device and substantially in the direction of the center of the coil. Therefore, the magnet can be mechanically attached to the coil end reliably and stably.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of a coil winding prevention device according to an embodiment of the present invention, FIG. 2 is a plan view of the device shown in FIG. 1, and FIG. FIG. 4 is a plan view showing details of the magnet holding device and the moving device, FIG. 4 is a side view of FIG. 3, and FIG. 5 is an explanatory view showing the moving state of the magnet in the same embodiment. 3...Coil, 3A...Coil end, 10...
...Conveyor device, 20...Magnet holding device, 28...
…Rotary actuator (rotary drive device),
30...Moving device.

Claims (1)

[Claims] 1. A coil unraveling prevention device that attaches a magnet to a coil end so that the coil end can be held on the coil body, which includes a conveyor device that can transport the magnet, and a magnet holding device that can hold the magnet on the conveyor device. , a moving device that rotatably supports the magnet holding device and is capable of reciprocating the magnet holding device substantially toward the center of the coil; A coil unraveling prevention device comprising a rotational drive device that rotates the coil to positions opposite to each other in the center direction of the coil.