JP2000210715A - Tension imparting device for coiling of cut steel strip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably coil without generating deformation, bucking, etc., of a steel strip in the case of coiling a cut steel strip after cutting all-together by respectively arranging a split type tension pad and an air bag at upper/lower parts of a tension device body. SOLUTION: Split pads 5 and an air bag 7 are respectively arranged at the upper part 2 and lower part 3 of a tension device body. Relating to this tension device body 1, at its upper part 2 the split pads 5 split in the width direction are arranged the force can be set to them individually, respective different forces can be imparted to the cut steel strip 9 which is placed at both ends and center of the device 1, a difference in the coiling tension between both ends and the center part of the device 1 is reduced. Further, when an oil quantity stuck to the cut steel strip 9 surface after cutting of the inlet side of the device 1 is different, the force corresponding to its difference is respectively given to the split pads 5. Further, when the forces of adjacent split pads 5 is different, the difference in the contact faces between the steel strip 9 and the air bag 7 is caused, coiling tension is controlled by its difference.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a slitter (1).
The present invention relates to a tension device (1) for applying a winding tension when collectively winding a steel strip (9) made of a plurality of strips of metal or the like cut in 1) into a coil shape.

[0002]

2. Description of the Related Art A conventional tensioning device includes a device for applying a force from the front and back of a steel plate and winding the steel plate with the frictional force generated by the force, such as a tension pad, and an air bag laid on the tension pad. A tension device designed to prevent scratches on the steel strip (9) surface by using an endless belt or roll such as a belt bridle / middleless tension device, which is improved so as not to be affected by the shape of the steel sheet surface. There is.

[0003]

In the conventional tensioning device, the tension pad system as in the present invention is more likely to cause flaws on the surface of the steel strip (9) than a belt bridle or a mindress tensioning device. Despite its drawbacks, it is easy to maintain, and it is easy to replace the felt (8) in contact with the surface of the steel strip (9) with a new one every time the steel strip (9) is threaded, so that the steel strip (9) surface It is widely used because it has the advantage that it does not easily give dirt.

However, in the conventional tension pad system, it is general that the pressing devices (4) for applying a force to the front and back surfaces of the steel strip (9) are installed at both ends of the device main body (1). When the steel strip (9) cut into a plurality of strips by the slitter is collectively wound on a tension reel (12) or the like, the steel strips (2) positioned at both ends of the apparatus (1) due to bending of the apparatus (1) or the like. 9) and centrally located steel strip (9)
There was a tendency for a difference in the force to be applied to the steel strip (9), which led to uneven winding tension of each of the cut steel strips (9).

Although laying the air bag (7) is effective in reducing the difference in force applied to the steel strip (9), when the tension pad device (1) is lowered on both sides, Regardless of how the air bag (7) is laid, the steel strip (9) located at both ends and the steel strip (9) located at the center of the There was a difference in the contact area between the surface of the band (9) and the surface of the air bag (7), resulting in a difference in winding tension.

On the other hand, different amounts of oil are attached to the surfaces of the plurality of cut steel strips (9) on the entrance side of the tensioning device (1), and the same amount is applied from the front and back surfaces by the tension pad (1). Even if force is applied, different frictional forces occur,
Each of the cut steel strips (9) had a difference in winding tension.

As described above, the difference in winding tension between the steel strip (9) located at both ends of the apparatus (1) and the steel strip (9) located at the center, and the difference in the winding tension between the steel strip (9) and the surface of each steel strip (9). The difference in the winding tension due to the adhering oil component may be caused by an appropriate tension in some steel strips (9) when the plurality of steel strips (9) are collectively wound on a tension reel (12) or the like. After winding, leading to abnormalities such as coil deformation and buckling.

[0008]

According to the present invention, a split tension pad (5) is provided on an upper portion (2) of a tensioning device main body in order to reduce a difference in tension when a steel strip (9) after cutting is collectively wound up. ), Air bag (7) at the lower part of tension device body (3)
Is a tension device (1) that is combined so as to be laid.

The tensioning device (1) of the present invention employs a tension pad (5) system in which an upper portion (2) of the device main body is divided in the width direction, so that the forces can be set individually. Different forces can be applied to the steel strip (9) located at both ends and the steel strip (9) located at the center of 1), and the above-mentioned device (1) is wound at both end positions and the center position. The difference in tension can be reduced.

Further, even when the amount of oil adhering to the surface of the steel strip (9) cut into a plurality of strips on the input side is different, the force corresponding to the difference is individually applied to the tension pad (5) by the split pad (5). By giving, the difference in the winding tension due to the amount of oil can be reduced.

Further, by laying the air bag (7) at the lower part, when the force of the adjacent split pad (5) is different, the difference in the contact surface where the steel strip (9) is in contact with the air bag (7). The winding tension is controlled by the difference between the contact surfaces.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The tensioning device (1) of the present invention is generally called a tension pad type. A tension pad (5) is provided at an upper portion (2) of the device, and an air bag is provided at a lower portion (3) of the device. This is a tension device (1) of the type in which (7) is laid.

Although the structure of the upper part (2) and the lower part (3) of the main body of the apparatus may be reversed, it is difficult to lay the air bag (7) on the upper part (2) of the main body because of the structure of the apparatus. The embodiment of the present invention is effective.

[0014]

Embodiments will be described with reference to the drawings.
In FIG. 2, a dividing pad (5) divided into five parts in the width direction at the upper part (2) of the tensioning device main body (1), and the lower part of the device main body (3).
Lay the air bag (7). In addition, a felt (8) is laid between the front and back surfaces of the steel strip (9) and the main body of the apparatus, so that no flaw is generated on the surface of the steel strip (9).

When the cut steel strip (9) is to be wound at once, the individual split pads (5) are usually set to the same force, or the device (1) is formed by bending the device (1).
In order to reduce the difference between both ends and the center, the force of the dividing pad (5) located at the center of the device (1) may be set slightly larger than that of the dividing pads (5) at both ends of the device (1).

If the surface oil of the cut steel strip (9) is partially different, proper tension can be applied by appropriately setting the force of the dividing pad (5) corresponding to that part. it can.

[0017]

The present invention is embodied in the form described above and has the following effects.

When the steel strip cut by the apparatus main body (1) is collectively wound, the pressing amount by the split pad (5) is individually set. (1) The difference in winding tension between both ends and the device (1) center can be reduced.

Even if the oil content on the surface of the steel strip (9) after cutting on the input side of the device (1) is different, the tension can be set according to the oil content because of the divided pad (5).

As described above, according to the present invention, when the steel strip (9) after cutting is wound up at once, the wound steel strip (9) is stable without causing abnormalities such as deformation and buckling. Can be wound up.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a use state of the present invention.

FIG. 2 is a configuration diagram showing the tension device of the present invention viewed from the front.

FIG. 3 is a schematic diagram showing the entire steel strip product manufacturing apparatus according to one embodiment of the present invention.

[Explanation of symbols]

 1. Tension device main body 2. 2. Upper part of device main body 3. Lower part of device main body 4. Tension device main unit pressure reduction device Divided pad 6. 6. Split pad pressure reduction device Air bag 8. Felt 9. Steel strip 10. Payoff reel 1. Slitter 2. Tension reel

Claims (1)

[Claims] 1. A winding of a cut steel strip, comprising a plurality of divided tension pads (5) in an upper part (2) of an apparatus main body and an air bag (7) laid in a lower part (3) of the apparatus main body. Tension applying device.