JP3716802B2 - Metal band winding shock absorber and metal band and winding shock absorber manufacturing method - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a buffer material for winding which is inserted into a tip portion of a metal band at the time of winding the metal band to reduce a lap mark of the metal band, and a metal band into which the winding buffer material is inserted.
[0002]
[Prior art]
When winding a metal strip, it is wound around a winder called a mandrel or a reel. At this time, defects called mandrel marks, reel marks, lap marks, and top marks often occur.
[0003]
The main thing of these defects is the bent mark which generate | occur | produces in the part which overlapped with the front-end | tip part after the 2nd volume since the most advanced part of a metal strip is a rectangle.
[0004]
These marks (hereinafter collectively referred to as lap marks) are generated in every line that involves winding of metal band production, and various countermeasures and proposals have been made.
[0005]
There are (1) techniques disclosed in Japanese Utility Model Publication No. 61-148409 as techniques for attaching an object to the tip during winding, and (2) JP-A There are techniques disclosed in Japanese Patent Application Laid-Open No. 59-1019 and Japanese Patent Application Laid-Open No. 3-81016.
[0006]
In the technique of (1), the stepped portion is made the thickest and the thickness corresponding to the metal band (therefore, the stepped portion becomes twice the thickness after mounting), and a thinning jig is attached to the front and back of the stepped portion to wind it. It is something to take.
[0007]
The technique (2) is to insert a buffer material into a metal strip.
[0008]
[Problems to be solved by the invention]
While the above techniques may be effective on each particular line, they are not universal. In the technique (1), the surface pressure of the stepped portion is increased, and the surface pressure before and after the step is also increased, and there is a difficulty in selecting the material of the cushioning material, the shape, and the mountability.
[0009]
The technique of (2) is effective for steel strips with a large plate thickness and metal strips with a high yield point, but for the steel strip with a thin plate thickness and metal strips with a low yield point, the tip or rear end of the inserted cushioning material. There is a problem that a new lap mark is generated at the portion.
[0010]
The present invention solves the problems of this type of conventional technology, and a metal band winding cushioning material having a special long-end shape that is simple and versatile, and a winding cushioning material are inserted. The object is to provide a metal strip.
[0011]
[Means for Solving the Problems]
The invention according to claim 1, the shape of the tip portion and the rear end portion, 100 mm beyond the length, not to have a portion which is perpendicular to the longitudinal direction of the metal strip, and, with respect to the longitudinal direction of the metal strip The metal band winding cushion is characterized in that the angle of the non-orthogonal part with respect to the orthogonal line exceeds 10 degrees .
[0012]
The invention according to claim 2 is the metal band winding cushioning material , wherein the shape of the front end portion and the rear end portion is an arc .
[0013]
The invention according to claim 3 is the metal band take-up cushioning material according to claim 1 or 2, wherein a vinyl coating is applied to a surface in contact with the metal band .
The invention according to claim 4 is characterized in that the width of the buffer material for winding the metal band is minus 50 mm to plus 10 mm on one side with respect to the width of the metal band. It is a buffer material for winding of the described metal strip.
According to a fifth aspect of the present invention, there is provided the metal band take-up cushioning material according to any one of the first to fourth aspects of the present invention, within 5 turns from the inner circumference or the inner circumference of the metal band wound in a coil shape. It is a metal band characterized by being inserted with a length of 3 or less.
The invention according to claim 6 is the winding according to any one of claims 1 to 4, wherein the winding buffer material is cut or punched out of a long material, so that the shape obtained by reversing the tip shape is the rear end shape. A manufacturing method of a buffer material for winding a metal band, characterized by manufacturing a buffer material for recovery.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
The winding cushioning material of the present invention is inserted at the time of winding the metal band, thereby preventing a wrap mark by the leading end of the winding of the metal band regardless of the thickness of the metal band and the yield point.
[0015]
At this time, in the shape of the front end portion and the rear end portion of the winding cushioning material, the discontinuous steps at the front end and rear end portion of the cushioning material are reduced by minimizing the portion orthogonal to the longitudinal direction of the metal strip. The deformation of the metal band due to the (boundary portion of the presence or absence of the buffer material) can be reduced, and thereby the lap mark based on the concentrated stress at the step based on the thickness of the buffer material itself can be reduced.
[0016]
As will be described later, it is effective in reducing lap marks by setting the lengths of the portions perpendicular to the longitudinal direction of the metal strip to 100 mm or less at the front end portion and the rear end portion. Moreover, the shape of the front-end | tip part and a rear-end part can also be made into various shapes without the part orthogonal to the longitudinal direction of a metal strip.
[0017]
As the material for the buffer material, non-crosslinked highly foamed polyethylene sheet, crosslinked highly foamed polyethylene sheet, corrugated paper, corrugated cardboard one-side corrugated plate, rubber, non-woven fabric (felt, etc.) and other elastic bodies and plastic deformation bodies are used.
[0018]
When rust preventive oil is applied to the metal strip, it is necessary to consider non-oil immersion in order to prevent deterioration of the oil resistance and rust preventive effect. A surface such as vinyl coating may be applied to the surface in contact with the metal band.
[0019]
When the buffer material for winding is manufactured without loss by cutting or punching from a long material, the shape obtained by inverting the tip shape becomes the rear end shape. In this case, either end is the longitudinal direction of the metal strip. It is preferable to make it a shape with as few portions as possible perpendicular to the shape.
[0020]
Insert the cushioning material for winding into the inner circumference of the coiled metal band or within 5 turns from the inner circumference with a length of 1.3 turns or less, but the tip of the metal band on the reel The lap mark can be reduced by inserting it so as to include the place located at the position. The reason for limiting the number of windings to 5 or less from the inner circumference is that the defective length at the lap mark between the reel before insertion or at the tip of the metal band becomes longer, so all lap marks including this lap mark are included. In order to reduce this, it is preferable to insert between the first and second rolls as much as possible.
[0021]
The insertion length is usually 50 mm or more and 1.3 or less turns including the place corresponding to the tip of the metal band. Preferably, in order to reduce the wrap mark, it is better that the cushioning material does not overlap as less than one volume. The length of less than 1.3 volumes is an economic problem.
[0022]
You may insert between a reel and a metal strip (inner circumference). This is relatively easy to insert when the reel grips the tip of the metal strip, but when winding with a belt wrapper, it is difficult to insert the winding cushioning material.
[0023]
When winding with a belt wrapper, insert the metal band around the reel, or insert the cushioning material for winding so as to include the tip of the metal band before winding on the reel or the tip of the first to fifth rolls. Alternatively, a buffer material inserting device may be provided in the vicinity of the reel, even by a method in which the tip is attached (with a tape or the like) and then fed into the belt wrapper.
[0024]
The thickness of the buffer material for winding should be determined by the compression amount (rate) with respect to the winding tension of the buffer material, the thickness of the metal strip, and the yield point of the metal strip. For example, in the case of a steel strip, the thickness of the cross-linked highly foamed polyethylene sheet should normally be 3-5 mm, and in the case of a low yield point steel strip, the thickness of the cross-linked highly foamed polyethylene sheet should be 2-3 mm.
[0025]
【Example】
Fig. 1 is generated at the tip of the cushioning material when a metal band with a low yield point is wound around the reel of the winder using cross-linked high-foamed polyethylene sheets with various insertion tips as the cushioning material for winding. The length of the lap mark is the length from the position where the cushioning material is inserted, and the degree is visually determined and displayed.
[0026]
The tip shape of the winding cushioning material used is shown in FIG.
[0027]
The metal strip in FIG. 1 is a steel strip having a yield point of 14.5 to 16.5 kgf / mm ^{2 and} a thickness of 0.8 mm. When wound on a 24-inch reel, a cross-linked highly foamed polyethylene sheet (foaming ratio 30 times, A cushioning material having a thickness of 2 mm (trade name Softlon) is inserted between the third and fifth rolls on a steel strip reel with a number of turns less than one round.
[0028]
As a result, the length of the lap mark after the position where the buffer material for winding is inserted is short in any of (1) to (11) of the present invention. On the other hand, round 14, round 13, and round 12 outside the invention are generated at the tip of the cushioning material because the length L of the portion perpendicular to the longitudinal direction of the metal band of the winding cushioning material exceeds 100 mm. The result is a long lap mark.
[0029]
In Fig. 4, the effect is confirmed also in the case where the shape obtained by reversing the tip shape becomes the rear end shape when the buffer material for winding is manufactured without loss by cutting or punching from a long material. Yes. That is, 5 for 1), 6 for 2), 7 for 3), 8 for 8 and 8 for 10 However, it is round 13 from round 11 to round 12 (however, the outside of the invention is round 12 and round 13), but the end shapes of (1) to round 11 of the invention are excellent.
[0030]
FIG. 2 shows the length L of the portion perpendicular to the longitudinal direction of the metal band of the cushioning material for winding of the present invention and the length of the lap mark (like FIG. 1, it is generated at the tip of the cushioning material. The length of the lap mark is the length from the position where the cushioning material is inserted, and the degree is visually determined and displayed.) When the length L is 100 mm or less, a great effect can be obtained. Understand. That is, in the tip shapes {circle around (9)} to # 13, L100 mm or less is excellent in any shape.
[0031]
FIG. 3 shows the angle Q with respect to the line perpendicular to the longitudinal direction of the metal strip and the length of the wrap mark, as shown in FIG. The length of the lap mark is the length from the position where the cushioning material is inserted, and the degree is visually determined and displayed.) The preferred range of the angle Q exceeds 10 degrees (of course, the maximum is 80 degrees or less) I know that there is. That is, it can be seen that the angle Q has a great influence on any of the tip shapes (1) to (2) and (5) to (6), and therefore, the shape is not orthogonal to the longitudinal direction of the metal strip. Should.
[0032]
In addition, the metal strip of the present invention was excellent in quality because there was no wrap mark due to the leading end portion of the metal strip and the buffer material for winding, and there was no trouble in charging the metal strip in the next process.
[0033]
In the examples, only steel strips having a low yield point where lap marks are likely to be generated are shown, but those having a large plate thickness and those having a high yield point are, of course, good results.
[0034]
In the examples, only a cross-linked highly foamed polyethylene sheet (trade name Softlon) was used as a buffer material for winding, but non-crosslinked highly foamed polyethylene sheet, corrugated paper, corrugated cardboard one-side corrugated plate, rubber, non-woven fabric Even if it is an elastic body or a plastic deformation body, the effect of the similar tendency is acquired.
[0035]
In the embodiment, the determination is based on the length of the wrap mark only at the front end portion of the winding cushioning material, but the rear end portion has the same effect.
[0036]
Regarding the relationship between the width of the winding cushioning material and the width of the metal strip, the width of the winding cushioning material should be wider by minus 50 mm or more on one side when considering only the lap mark. This is because a wrap mark is generated at the end portion of the metal band width if it is too narrow. Usually, in consideration of the conveyance and packing after winding, it should be within minus 50 mm to plus 10 mm, preferably within minus 20 mm to plus 5 mm.
[0037]
【The invention's effect】
The metal band winding cushioning material of the present invention is effective in reducing lap marks when winding any metal band. The metal band of the present invention can greatly reduce the lap mark when winding the metal band tip and the wrap mark by the buffer material for winding, and has no trouble in loading the metal band in the next process, and has excellent quality It is.
[Brief description of the drawings]
FIG. 1 is a diagram showing the relationship between various tip shapes of a buffer material for winding and the length of a lap mark in examples and comparative examples of the present invention.
FIG. 2 is a diagram showing the relationship between the length of a portion perpendicular to the longitudinal direction of a metal band of a winding buffer material and the length of a lap mark in an example of the present invention and a comparative example.
FIG. 3 is a diagram showing the relationship between the angle of a leading edge of a winding cushioning material and the length of a lap mark with respect to a line perpendicular to the longitudinal direction of a metal strip in an embodiment of the present invention and a comparative example.
FIG. 4 is a view showing various tip shapes of a winding cushioning material of an example of the present invention and a comparative example.

Claims (6)

The shape of the tip and rear end, 100 mm beyond the length, not to have a perpendicular portion to the longitudinal direction of the metal strip, and, of the portion that is not orthogonal to the longitudinal direction of the metal strip, perpendicular A cushioning material for winding a metal strip, characterized in that the angle with respect to the line exceeds 10 degrees . A metal band winding cushioning material characterized in that the shape of the front end portion and the rear end portion is an arc. The cushioning material for winding a metal band according to claim 1 or 2, wherein a vinyl coating is applied to a surface in contact with the metal band. The width of the metal band winding buffer material is minus 50 mm to plus 10 mm on one side with respect to the width of the metal band, for winding the metal band according to any one of claims 1 to 3. Cushioning material. The metal band take-up cushioning material according to any one of claims 1 to 4 is inserted within a length of 1.3 or less within 5 turns from the inner circumference or inner circumference of the metal band wound in a coil shape. Metal strip characterized by being made. The winding cushioning material according to any one of claims 1 to 4, wherein the winding cushioning material is cut or punched from a long material so that the shape obtained by reversing the tip shape is a rear end shape. A method of manufacturing a shock absorber for winding a metal strip .

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