JPH0641908U - Snubber roll for holding the tail end of the slit coil - Google Patents

Abstract

(57) [Summary] [Purpose] An object of the present invention is to provide a snubber roll for holding the tail end of a slit coil which prevents looseness or scratches on the slit coil wound on the winding reel of a slitting equipment. [Structure] A snubber roll for pressing a slit coil wound on a winding reel of a slitting equipment, the inner layer including a central axis and an elastic body provided so as to cover the central axis, and a constant inner layer. An outer layer made of an elastic body provided so as to cover the outer periphery of the inner layer at a distance, a rib made of an elastic body that engages the inner layer and the outer layer, and a hollow portion surrounded by the inner layer, the outer layer, and the rib. A snubber roll for holding the tail end of the slit coil, which comprises air blowing means for blowing air into the.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a snubber roll for holding a tail end portion when winding a slit coil in slitting work.

[0002]

[Prior art]

 First, a conventional slitting operation will be described with reference to the drawings. FIG. 2 is a flow diagram after slitting slit lines using snubber rolls. 1 is a slitter, 2 is a separator, 3 is a deflector roll, 4 is a take-up reel, 5 is a slit coil, and 6 is a snubber roll.

The strip S rewound by a rewinding machine (not shown) is divided into a predetermined width by a slitter 1, subsequently separated by a separator 2, and deflected by a deflector roll 3 to change the direction of the strip, and then on a reel 4. The slit coil 5 is wound up to form the slit coil 5. Since the strip S is normally wound under tension, it does not loosen, but when the tail end of the strip S approaches the take-up reel 4, tension is not applied to the slip S. Therefore, the slit coil 5 will be loosened. In order to prevent this, the slit coil 5 wound by the rubber-lined snubber roll 6 is pressed to prevent loosening.

[0004]

[Problems to be solved by the device]

 However, in the schematic diagram of the plate crown in the width direction of the coil of FIG. 3, (a) the plate thickness at the width center part is thicker than the end part and (b) the plate thickness at the width center part is thinner than the end part. As described above, when there is a change in the plate thickness in the width direction of the strip before slitting, the slit coil 5 has a difference in outer diameter. Even if it is pushed, it is not possible to hold down all the slit coils 5, and a coil having a small outer diameter still has loose winding.

In the conventional rubber-lined snubber roll 6, since sufficient pressing pressure cannot be secured for the slit coil 5 having a small outer diameter, winding looseness occurs, which causes scratches or telescoping in the next process. ing. An object of the present invention is to provide a snubber roll in which loosening of the slit coil is solved.

[0006]

[Means for Solving the Problems]

 The present invention is a snubber roll for pressing a slit coil wound on a take-up reel of a slitting equipment, which comprises an inner layer made of a central axis and an elastic body provided so as to cover the central axis, The outer layer made of an elastic body is provided so as to cover the outer circumference of the inner layer at a certain distance from the outer surface of the inner layer, the rib made of an elastic body that fixes the inner layer and the outer layer together, and the inner layer, the outer layer and the rib. A snubber roll for pressing the tail end of a slit coil, which comprises air blowing means for blowing air into the enclosed hollow portion.

[0007]

[Action]

 With the snubber roll of the present invention, even if each slit coil having a different outer diameter is pressed simultaneously, the hollow portion of the snubber roll expands and follows according to the winding of the outer diameter, so that the tail end of each slit coil can be reliably pressed.

[0008]

【Example】

 FIG. 1 (a) is a sectional view of a snubber roll for holding the tail end of a slit coil according to the present invention, and FIG. 1 (b) is a perspective view of the present invention. In (a), an inner layer 8 made of rubber covers the periphery of the central shaft 7, and an outer layer 9 is provided so as to form a hollow portion 10 with the inner layer 8. A rib 11 is provided between them.

As can be seen from the perspective view of (b), the central shaft 7 passes through the center of the roll and supports the entire roll. An air suction port 12 for blowing air in one place is provided on the side surface of the roll, and air is sucked in through this port. The rib 11 fixes the inner layer and the outer layer, and serves as a skeleton of the roll. The rib 11 divides the hollow part into four parts, but unless air is evenly introduced, it becomes flat or elliptical, and it is impossible to press each slit coil with a uniform pressing force. Therefore, as shown by the dotted line in (b), the ribs 11 may be provided with air circulation holes or may be provided with ribs intermittently in the width direction.

When the inner layer portion diameter is 300 mm, the outer layer portion diameter is 500 mm, and the inner layer and the outer layer each have a thickness of 30 mm, 5 kg / cm ² of air is supplied to the hollow portion of the roll and used as the snubber roll 6 of the slit line. The slit coils with different diameters could be wound well without loosening. A slit coil with an outer diameter difference of less than 10 mm and a minimum width of 100 mm was used for the slitter line, but no loose winding occurred.

Even if the slit coil diameter difference and the snubber roll diameter were increased, winding looseness did not occur. Further, by adjusting the air supply pressure of the snubber roll, the pressing force of the snubber roll against the slit coil could be adjusted.

[0012]

[Effect of device]

 By using the snubber roll according to the present invention, it is possible to prevent the winding looseness that has occurred in the slit coil having a small outer diameter and prevent the occurrence of scratches and scratches.

[Brief description of drawings]

FIG. 1 (a) is a sectional view taken along the line AA of the snavaroll of the present invention. (b) is a perspective view of the snubber roll of the present invention.

FIG. 2 is a side view of a take-up reel using a snubber roll in a conventional slitter line.

FIG. 3A is a schematic view of a plate crown in the width direction of the coil and is a cross-sectional view of the coil in the case of a convex crown. (b) is a schematic view of a plate crown in the width direction of the coil and is a sectional view of the coil in the case of a concave crown.

[Explanation of symbols]

 1 Slitter 2 Separator 3 Deflector Roll 4 Reel 5 Slit Coil 6 Snubber Roll 7 Center Axis 8 Inner Layer 9 Outer Layer 10 Hollow Part 11 Rib 12 Air Suction Port

Front page continuation (72) Inventor Katsunori Shiraishi 1 Kawasaki-cho, Chuo-ku, Chiba, Chiba Prefecture Inside the Chiba Works, Kawasaki Steel Co., Ltd. (72) Ryuichi Hasegawa 1 Kawasaki-cho, Chuo-ku, Chiba, Chiba Prefecture Company Chiba Works (72) Inventor Taketo Nomura 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Kawasaki Works Chiba Works

Claims (1)

[Scope of utility model registration request] 1. A snubber roll for pressing a slit coil wound on a winding reel of a slitting equipment, comprising:
An inner layer made of a central axis and an elastic body provided so as to cover the periphery of the central axis, and an outer layer made of an elastic body provided so as to cover the outer circumference of the inner layer at a constant distance from the outer surface of the inner layer, A slit coil tail characterized by comprising a rib made of an elastic body that engages the inner layer and the outer layer, and an air blowing means for blowing air into a hollow portion surrounded by the inner layer, the outer layer and the rib. Snubber roll for end presser.