JPH06536A - Method for feeding and cutting set-off paper in steel strip coil - Google Patents

Abstract

(57) [Summary] [Purpose] The end of the interleaving paper is not bent when the steel strip coil is wound, and it is not necessary to pass the paper through a guide roller or the like during the next interleaving paper. To do. [Structure] The interleaving paper 20 is half-cut by a semi-cutting device 18 at a position which is a winding end so that the end of the interleaving paper does not drop, and is further wound by a winding device 16 to cut the semi-cutting part. When it reaches the position, apply back tension to cut it completely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for feeding and cutting interleaf paper in a coil of a strip such as a steel strip.

[0002]

2. Description of the Related Art A strip coil, for example, a stainless steel strip coil, reduces the commercial value of steel when it is wound and after it is wound, because the steel strips come into contact with each other and scratches are generated due to mutual displacement. When winding the strip coil, a slip sheet (generally kraft paper) is attached to the steel strip and wound, and the slip sheet is interposed between the rolled steel strips.

At this time, the interleaving paper cutting at the time when the winding of the steel strip by the take-up reel is completed is performed by a cutting device provided between the interleaving paper coil rewinding device and the take-up reel. An example thereof is Japanese Patent Laid-Open No. 59-7662.
No. 0 or JP-A No. 49-109987.

[0004]

In the case of the above-mentioned conventional cutting method, the interleaving paper between the cutting device and the take-up reel falls in a free state due to the cutting and is bent and accumulated at one place below. There is a problem in that the steel strip is rolled up between the steel strips, so-called surface bending occurs in the rolled up steel strip, and the winding shape of the outer winding portion of the steel strip coil is deteriorated.

Further, although a guide roll for a slip sheet is usually provided between the cutting device and the take-up reel, when it is wound into another steel strip coil through the slip sheet,
There is a problem that the paper passing operation is troublesome because the slip sheet has no rigidity.

The present invention has been made in view of the above-mentioned problems of the prior art, and when the interleaving paper is cut, the end of the interleaving paper is not bent and accumulated in the strip-shaped coil in a state of being accumulated. An object of the present invention is to provide a slip sheet feeding / cutting method for a strip-shaped coil that eliminates the need for a paper passing operation when the tape is wound around the take-up reel next time.

[0007]

SUMMARY OF THE INVENTION According to the present invention, the interleaving paper fed from the paper coil feeding device and wound on the strip coil is made into a semi-cut state at a required cutting position in anticipation of a required winding length. To achieve the above object by a method for feeding and cutting interleaf sheets in a strip coil, characterized in that when the half-cut portion moves to the cutting position in the winding direction, a tensile force is applied to the interleaf sheets to cut. Is.

A tension force may be applied to the slip sheet by the paper coil feeding device.

[0009]

In the present invention, the slip sheet is preliminarily cut into a semi-cut state at a predetermined position, and when the semi-cut portion moves to the separating position, a tensile force is applied to the slip sheet to completely cut the slip sheet. There is no interleaf sheet end portion which is in a free state at the time of cutting, and therefore the end portion is not bent and accumulated at one place.

Further, since the entire cutting position is close to the strip coil winding position, it is not necessary to pass the slip sheet through the slip sheet guide when winding the coil next time.

According to the second aspect, the tensile force applied to the slip sheet for the complete cutting is obtained by the paper coil feeding device, so that it is not necessary to provide a separate device for applying the tensile force.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the drawings showing an apparatus for carrying out the present invention.

As shown in FIG. 1, this apparatus comprises a slip sheet rewinding device 10 and a winding device 1 for a steel strip 14.
6, a semi-cutting device 18 for semi-cutting the slip sheet and a back sheet tension between the slip sheet rewinding device 10 and the take-up device 16 are applied to the slip sheet rewinding device 10.
And a braking device 22 that applies a braking force to the.

The slip-sheet rewinding device 10 is provided with three rewinding reels and is adapted to rewind the slip-sheet 20 in sequence. Reference numeral 24 in FIG. 1 indicates a control device, and the control device 24 controls the feeding motor 26 for driving the interleaf sheet rewinding device 10 and the braking device 22.

The semi-cutting device 18 includes a movable guide 18A around which the slip sheet 20 is wound and which guides the slip sheet 20, and the movable guide 18A.
Movable guide working cylinder 1 that reciprocates in the thickness direction of 0
8B and a cutting blade 19 facing the movable guide 18A and at the position of the slip sheet 20 when the movable guide 18A is projected by the movable guide operating cylinder 18B.

As shown in FIG. 2 (A), the cutting blade 19 is movable, with a portion corresponding to the center of the slip sheet 20 in the width direction being a semi-cutting blade 19A and both sides in the width direction being full cutting blades 19B. When the interleaf sheet 20 is pushed to the position of the feed line 28 at the time of cutting by the guide 18A, the central portion of the interleaf sheet 20 is in a semi-cut state in a perforated shape, and both sides in the width direction are completely cut. Is configured.

In the embodiment, when the width of the slip sheet 20 is 1200 mm, the semi-cutting blade 19A of the cutting blade 19 is 500
mm, and all cutting blades 19B on both sides thereof were set to 500 mm.

Here, the semi-cutting blade 19A has a distance between its cutting edge and the blade base larger than that of the full cutting blade 19B, and when the cutting blade 19 cuts into the slip sheet 20 up to the feed line 28 at the time of cutting, The slip sheet 20 reaches an intermediate position between the cutting edge and the cutting edge of the cutting blade 19A.

The braking device 22 comprises a delivery motor 2
The rotation of the slip-sheet rewinding device 10 driven by 6 is appropriately braked so as to give an appropriate tension so that the slip-sheet 20 is not bent during feeding.
4 is controlled together with the feeding motor 26.

Reference numeral 30 in FIG. 1 indicates a slip sheet rewinding device 10.
3 shows a group of slip-sheet guide rolls for guiding the slip-sheet 20 to the winding device 16. Reference numeral 32 is a deflector roll for guiding the steel strip 14 to the winding device 16, 34 is a coil car cradle roll arranged below the coil of the winding device 16, and 36 is a snubber roll. The coil car cradle roll 34 and the snubber roll 36 are used for the coil 14 by the winding device 16.
It fulfills the function of preventing board splashing during the winding work.

Next, the steel strip 1 is taken up by the winding device 16.
The process of feeding and cutting the slip-sheet 20 when winding 4 will be described with reference to FIG.

The slip sheet 20 is supplied from one of the rewinding reels of the slip sheet rewinding device 10 so that the slip sheet 20 is inserted between the steel strips 14 wound by the winding device 16.

After confirming that the winding operation by the winding device 16 is completed and the winding of the slip sheet 20 around the outer circumference of the steel strip coil 16A is completed (step 101), the slip sheet rewinding device 10 is stopped, The movable guide operating cylinder 18B of the half-cutting device 18 is driven to cause the movable guide 18A to project toward the cutting blade 19 (step 102).

The interleaving paper 2 wound around the movable guide 18A
When 0 is pushed to the position of the feed line 28 at the time of cutting,
The widthwise both sides of the slip sheet 20 are collectively cut by the entire cutting blades 19B of the cutting blades 19, and the central portion is semi-cut into perforations by the semi-cutting blade 19A.

Next, while rotating the slip sheet rewinding device 10, the slip sheet 20 is sent out to the position of C ₁ or C _{2 in} FIG. 1 (step 103), where the slip sheet rewinding device is operated. By applying a braking force by the braking device 22 and slightly rotating the winding device 16, back tension is applied to the slip sheet 20 (step 104), and the slip sheet 20 is completely cut at the position C ₁ . At the same time as cutting, the winding device 16 is stopped (step 105).

When the reel of the winding device 16 is wound up, the interleaving of the interleaving paper is completed, and when the reel is wound down, the take-up reel of the winding device 16 is rotated by about 240 ° (step 106). Becomes

In this embodiment, since the entire cutting position of the slip sheet 20 is almost the winding end position, the trailing end of the slip sheet after cutting does not bend and accumulate in one place due to dropping, and therefore the accumulation occurs. Steel strip 14 due to paper winding
The occurrence of surface breakage is prevented and the winding appearance of the coil 16A is improved.

When winding the steel strip 14 around the next coil, conventionally, the slip sheet guide roll group 30 had to be manually passed through the slip sheet, but in the case of this embodiment, it is wound up. Since the cutting tip of the slip sheet 20 is located at a position close to the device 16, the troublesome paper-passing work as in the past is not necessary.

The cutting blade 19 in the above embodiment is
The widthwise central portion is the semi-cutting blade 19A, but if the interleaf sheet is a reused product, that is, used, it is easy to be cut. Therefore, in the case of such a reusable interleaf sheet, (B in FIG. ), A portion corresponding to the semi-cutting blade 19A may be cut out to form a bladeless portion 19C.

In the above embodiment, the cutting of the slip sheet 20
The cutting blade 19 provided with the semi-cutting blade 19A or the cutting blade having the central portion cut out is used for cutting. However, the present invention is not limited to this, and if necessary, the interleaf sheet 2 may be used.
As long as 0 can be cut into a half-cut state at a predetermined position, for example, it can be cut in a perforated shape over the entire width of the slip sheet, and can be cut only in the central portion while leaving both sides in the width direction. Embodiments are possible.

Further, in the above embodiment, the braking device 22
Although the back tension is applied to the slip sheet 20 by utilizing, the present invention is not limited to this. For example, after stopping the slip sheet rewinding device and / or pressing the slip sheet in the middle, Alternatively, the back tension may be applied by means of, for example, an air cylinder.

Further, although the above embodiment relates to the interleaving paper when the steel strip 14 is wound into a coil, the present invention is not limited to this, and other metal strips other than the steel strip can be formed. It is also applied when winding a body etc. around a coil.

[Brief description of drawings]

FIG. 1 is a schematic side view including a partial block diagram showing an apparatus for carrying out a slip sheet feeding and cutting method according to the present invention.

2 is a plan view showing a cutting blade used in the apparatus of FIG. 1. FIG.

3 is a flowchart showing a slip sheet cutting process by the apparatus of FIG.

[Explanation of symbols]

 10 ... Interleaving paper rewinding device 14 ... Steel strip 16 ... Winding device 16A ... Coil 18 ... Half cutting device 18A ... Movable guide 19 ... Cutting blade 19A ... Half cutting blade 19B ... Full cutting blade 20 ... Interleaving paper 22 ... Braking device 24 … Control device 28… Feed line for cutting

Claims (2)

[Claims] Claims: 1. The interleaving paper fed from the paper coil feeding device and wound around the strip-shaped coil is semi-cut at a required cutting position in anticipation of a required winding length, and the semi-cut portion has a winding direction. A method of feeding and cutting a slip sheet in a strip coil, which comprises applying a tensile force to the slip sheet to cut when the sheet is moved to a cutting position. 2. The interleaf sheet feeding and cutting method for a strip coil according to claim 1, wherein a tension force is applied to the interleaf sheet by the paper coil delivery device.