JPH0910834A - Winding device for steel strip - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to easily respond to changes in the thickness of the steel strip and effectively prevent end marks. [Structure] A steel strip winding device in a steel strip processing line. A blade 13 is attached via a spacer 12 to a step portion 11a provided on a part of the surface of the rubber sleeve 11 that covers the mandrel 3 for winding the steel strip 4 in the entire axial direction, and a notch in which the tip side of the blade 13 is normally open The groove portion 14 is formed. A chamber 16 in which the vertical wall 11aa side of the step portion 11a is connected to the step portion 11a is formed on the inner peripheral side of the step portion 11a, and the chamber 16 is expanded by a fluid supplied through a pipe 18 to form the chamber 16. Ceiling wall 16a
The air tube 17 is installed to lift the outer peripheral direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel strip winding device capable of preventing an end mark generated during winding of a steel strip.

[0002]

2. Description of the Related Art When a steel strip is wound on a mandrel, end marks transferred to the surface of the steel strip for several tens of turns from the start of winding cause a decrease in yield due to surface defects. To prevent this end mark, cold rolled steel sheets, surface-treated steel sheets, etc. with a relatively thin thickness (sheet thickness of 0.4 to
(2.3 mm), but with the recent demand for higher surface quality from consumers, the plate thickness is relatively thick, such as hot-rolled steel plates that have undergone processes such as refining and pickling. It is also targeted at things.

Conventionally, in order to reduce or prevent such end marks, a method of mounting a rubber sleeve on the outer peripheral portion of the mandrel has been adopted. Furthermore, as shown in FIG. 4, the end of the steel strip in the rubber sleeve 1 is adopted. It has also been proposed that the winding position of the portion be a stepped portion 1a, or that the winding position is a substantially strip-shaped soft layer 2 that is softer than the rubber sleeve 1 itself as shown in FIG. For example, JP-A-5-285540). In addition, 3 in FIG. 4 shows a mandrel.

Although such a rubber sleeve has a temporary effect, it takes a considerable amount of time to align the tip end of the steel strip with a visual check in order to position it on the step or the soft layer. There is a problem that it is necessary and the work cannot be carried out smoothly. In addition, such a rubber sleeve has a problem that the effect of reducing the end mark is small in the case of a steel strip having a relatively large plate thickness.

Therefore, in order to deal with the above problem, as shown in FIG. 6, the blade 6 is attached to the surface of the rubber sleeve 1 via the spacer 5 having a thickness substantially corresponding to the plate thickness of the steel strip 4 to be wound up. Japanese Patent Application Laid-Open No. 6-16342 proposes a cut groove portion 7 which is attached and opened in a free state. And in this proposal, since the cut groove is formed in the rubber sleeve, the work of aligning the front end of the steel strip can be performed smoothly, and the blade can be inserted through the spacer having a thickness substantially equivalent to the plate thickness of the steel strip. Since it is attached, the sleeve surface has a substantially cylindrical shape in a closed state in which the tip of the steel strip is inserted into the cut groove portion, and the steel strip can be wound around the cylindrical axis without any trouble.

[0006]

[Patent Document 1] Japanese Patent Application Laid-Open No. 6-163
Although it is recognized that the proposal of No. 42 can smoothly perform the positioning of the front end of the steel strip, an end mark is generated when the difference between the spacer thickness and the steel strip plate thickness is large. However, no measures have been taken against changes in the thickness of the steel strip.

The present invention has been made in view of the above-mentioned conventional problems, and can easily cope with a change in the plate thickness of a steel strip and can effectively prevent an end mark from winding a steel strip. Is intended to provide.

[0008]

In order to achieve the above-mentioned object, a steel strip winding device of the present invention is a steel strip winding device in a steel strip processing line. The blade is attached to the stepped portion provided on a part of the surface of the rubber sleeve in the axial direction all the way through the spacer, and the notch groove portion in which the tip side of the blade is normally opened is formed, and on the inner peripheral side of the stepped portion,
A room in which the vertical wall side of the step portion is connected to the step portion is formed, and a tube that expands by the fluid supplied through the pipe and lifts the ceiling wall of the room in the outer peripheral direction is installed in this room.

[0009]

In the steel strip winding device of the present invention, the blade is attached through the spacer to the stepped portion provided on the surface part of the rubber sleeve that covers the mandrel in the entire axial direction,
A notch groove portion that is normally open at the tip side of the blade is formed, and a room where the vertical wall side of the step portion is connected to the step portion is formed on the inner peripheral side of the step portion, and this room is supplied through a pipe. A tube is installed that expands by the fluid and lifts the ceiling wall of the room in the outer peripheral direction.First, the tip of the steel strip is inserted into the cut groove in the open state, and then the fluid is supplied to the tube to supply the ceiling wall of the room. The blade is lifted and the tip of the steel strip is held in a sandwiched state by the blade and the ceiling wall, and then winding is started.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A steel strip winding device according to the present invention will be described below with reference to FIGS.
A description will be given based on the embodiment shown in FIG. FIG. 1 is a drawing for explaining a main part of an embodiment of a steel strip winding device of the present invention, and FIG. 2 is an example of a mechanism for supplying a fluid to a tube constituting the steel strip winding device of the present invention. FIG. 3 is a schematic view showing a structure around a mandrel in the steel strip winding device of the present invention.

In FIGS. 1 to 3, reference numeral 11 denotes a rubber sleeve for covering the mandrel 3 on which the steel strip 4 is wound, and a step portion 11a is provided on a part of the surface of the mandrel 3 in the axial direction. Then, the metal spacer 12 is formed on the step portion 11a.
The blade 13 made of rubber is attached via the through-hole, and the cut groove portion 14 whose tip end side is normally open is formed. The thickness of the spacer 12 is determined so that the gap between the cut groove portions 14 is equal to or larger than the plate thickness of the steel strip 4 to be wound. Reference numeral 15 in FIG. 1 denotes a rubber plug.

Reference numeral 16 denotes a room formed on the inner peripheral side of the step portion 11a. In this room 16, the vertical wall 11aa side of the step portion 11a is connected to the step portion 11a (cut groove portion 14). That is, in the ceiling wall 16a of this room 16, only the tip side of the blade 13 is continuous with the rubber sleeve 11,
On the side of the vertical wall 11aa of the step portion 11a, it is supported in a discontinuous cantilever manner. Then, for example, an air tube 17 is installed in this room 16, and air is supplied to this air tube 17 through a pipe 18. The supply of this air causes the air tube 17 to expand and lift the ceiling wall 16a of the room 16 in the outer peripheral direction as shown by the imaginary line in FIG.

In this embodiment, when the ceiling wall 16a is lifted in the outer peripheral direction by the expansion of the air tube 17, the vertical wall 11aa side swings up and down with the tip end side of the blade 13 as a fulcrum, as shown by the imaginary line in FIG. In order to abut the steel strip 4 on the entire surface of the ceiling wall 16a, for example, a metal 19 is interposed in the chamber 16, and a groove 19a is provided on the bottom surface of the metal 19 on the side of the vertical wall 11aa. The thing which installed the air tube 17 is disclosed.

Reference numeral 20 denotes an air source of air to be supplied to the air tube 17, and the air supplied from the air source 20 is adjusted to a predetermined pressure by a pressure regulator 21 and is then adjusted by a solenoid valve 22. It is supplied to the air tube 17 through the pipe 18. In FIG. 2, 23 is an air breather that silences when air is discharged from the air tube 17, 24 is a tension reel drive device, 25 is a coupler, and 26 is a rotary cylinder.

The steel strip winding device of the present invention has the above-described structure, and the steel strip 4 which has been subjected to the predetermined treatment in the steel strip processing line is guided by the apron table 27 and the tip guide 28, and Is inserted into the cut groove portion 14 arranged at a position on the extension line of the tip guide 28 as shown in FIG. At this time, the interval between the cut groove portions 14 is set by the spacer 12 so as to be equal to or larger than the plate thickness of the steel strip 4 to be wound in advance.

When the tip of the steel strip 4 is inserted into the cut groove 14, the solenoid valve 22 is opened, and the air adjusted to a predetermined pressure by the pressure regulator 21 is supplied from the air source 20 through the pipe 18 and the coupler 25. The ceiling wall 16a is supplied to the air tube 17, and as shown by an imaginary line in FIG. 1, the vertical wall 11aa side is vertically swung up and down with the tip side of the blade 13 as a fulcrum to abut against the tip portion of the steel strip 4.

When winding is started in this state, the steel strip 4
Is a rubber sleeve 1 in which the tip of the mandrel 3 is covered by a wrapper roll 29 and a belt wrapper 30 while being held in a sandwiched state by the blade 13 and the ceiling wall 16a.
It is wrapped around 1. At this time, the tip of the steel strip 4 is shown in FIG.
As shown in FIG. 3, since it does not exist on the outer circumference perfect circle of the rubber sleeve 11, an end mark due to the tip of the steel strip 4 does not occur. After the winding is completed, the coil can be easily extracted by operating the rotary cylinder 26 to contract the mandrel 3.

[0018]

As described above, according to the steel strip winding device of the present invention, the blade is attached via the spacer to the stepped portion provided on a part of the surface of the rubber sleeve for covering the mandrel in the entire axial direction, A notch groove portion that is normally open at the tip side of the blade is formed, and a room where the vertical wall side of the step portion is connected to the step portion is formed on the inner peripheral side of the step portion, and this room is supplied through a pipe. A tube is installed that expands by the fluid and lifts the ceiling wall of the room in the outer peripheral direction.First, the tip of the steel strip is inserted into the cut groove in the open state, and then the fluid is supplied to the tube to supply the ceiling wall of the room. Lifting up and holding the tip of the steel strip between the ceiling wall and the blade in a sandwiched manner starts winding, so an end mark can be generated even when winding a steel strip with a relatively large thickness difference. But Ku, it is possible to improve the quality and yield.

[Brief description of the drawings]

FIG. 1 is a view for explaining a main part of an embodiment of a steel strip winding device according to the present invention.

FIG. 2 is a diagram illustrating an example of a mechanism for supplying a fluid to a charb that constitutes the steel strip winding device of the present invention.

FIG. 3 is a schematic view showing a structure around a mandrel in the steel strip winding device of the present invention.

FIG. 4 is a view showing an example of a conventional rubber sleeve.

FIG. 5 is a view showing an example of a conventional rubber sleeve.

FIG. 6 is a view showing an example of a conventional rubber sleeve.

[Explanation of symbols]

 3 Mandrel 4 Steel Strip 11 Rubber Sleeve 11a Step 11aa Vertical Wall 12 Spacer 13 Blade 14 Notch Groove 16 Room 16a Ceiling Wall 17 Air Tube 18 Piping

Claims (1)

[Claims] 1. A device for winding a steel strip in a steel strip processing line, wherein a blade is interposed via a spacer at a step portion provided on a part of the surface of a rubber sleeve which covers a mandrel for winding the steel strip, in the entire axial direction. Attaching, forming a notch groove where the tip side of the blade is normally open, and forming a room on the inner peripheral side of the step part where the vertical wall side of the step part is connected to the step part, and supplying to this room via piping A winding device for a steel strip, wherein a tube is installed to expand the ceiling wall of the room by the fluid to be lifted in the outer peripheral direction.