JP2563020B2 - Winding device for multiple strips - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-slit strip strip, which is slit into a plurality of strips along the longitudinal direction of the strip strip, and then slits into multiple strip strips. The present invention relates to a strip strip winding device, and particularly when winding a multi-slit strip strip without winding any special equipment in the middle of the strip strip due to the difference in the winding diameter of each strip strip. The present invention relates to a multi-strand strip winding device capable of adjusting a tension imbalance and applying a uniform winding tension.

[0002]

2. Description of the Related Art In general, the cross section of a wide strip is not completely flat, but is thick at the center and thin at both ends. When this is slit, each slit strip at the center and both ends of the strip is slit. Causes a deviation in the plate thickness.

When each of these slit strips is wound by a common winding drum, the thick slit strip has a winding diameter larger than that of the thin slit strip, and the slit strips at the central portion and both end portions are wound. Causes a difference in the winding speed, and the winding tensions of the slit strips wound on the winding drum become imbalanced.

As a result, the slit strips at both ends wound on the winding drum become softer than the central portion, and when taken out from the winding drum, they become a telescope shape or an elliptical shape. Therefore, there is a drawback that it cannot be rewound or transported.

For this reason, in general, in equipment for slitting and cutting and dividing into multiple strip strips, in order to correct the difference in winding diameter, the beginning of slack is attached to the slit strips with small pieces called spacers. There is a device that absorbs the difference in the diameter of the rolled tape and applies a winding tension while the slit strip is being supplied to the winding device. After being applied with a winding tension, it is wound by a common winding drum.

As a device for applying such a winding tension, for example, Japanese Patent Publication No. 51-35458 and Japanese Patent Laid-Open No.
No. 6-136748 is known.

The device disclosed in Japanese Patent Publication No. 51-35458 is brought into contact with an adjusting roll having an elastic body surface in which grid-shaped slits are engraved before winding a slitted multi-slit strip plate, The winding tension is generated by the braking force acting on the adjusting roll, and the tension fluctuation of each strip can be automatically adjusted.

Further, the device disclosed in Japanese Patent Laid-Open No. 56-136748 utilizes an endless belt, and has a multi-slit structure slitting between the outer surfaces of the upper and lower endless belts facing each other. Through the slit strip plate, press the inner surface of the endless belt with friction pieces to press the upper and lower endless belts against the front and back surfaces of the slit strip plate for pressure bonding, and rotate the endless belt integrally with the moving slit strip plate. In this way, it is possible to apply the winding tension to the slit strip by the frictional force due to the slip between the friction piece and the inner surface of the endless belt.

[0009]

However, when the tension applying device is provided before winding the multi-slit strip strip, a friction piece or the like is brought into contact with the surface of the multi-slit strip strip to control the winding tension. Therefore, depending on the material of the strip and the type of surface treatment, scratches, patterns due to pressing, etc. may occur and the quality may be impaired.

Since the strip plate coated with rust preventive oil has a small friction coefficient, it is difficult to apply the winding tension due to the frictional force, and the friction coefficient varies depending on the state of oil and air, and the winding tension tends to be unstable. Is.

Further, since the thickness of the strip in the width direction is not necessarily uniform, when slitting and splitting into a plurality of slit strips and winding them by a common winding drum, the winding diameter of each strip becomes the same. There may be a difference, and the winding length of each strip may differ accordingly, which may cause a large slack in a certain strip.

In order to accommodate this slack, it is necessary to provide a loop pit 52 for accommodating the slack in front of the tension applying device 51, as shown in FIG. 4, resulting in an increase in equipment area. There was a problem that the winding equipment became complicated.

The present invention was made in view of the above problems and was devised to solve the problems. The object of the present invention is to scratch or press against the surface of a multi-row slit strip plate. It is possible to reliably apply a predetermined winding tension without causing a pattern etc. due to the winding, and moreover, there is no need for a tension applying device or a loop pit facility for accommodating the slack in front of the winding device. An object of the present invention is to provide a winding device for a multi-strip strip that can simplify the equipment.

[0014]

In order to achieve the above object, the present invention slits a wide strip plate into a plurality of strips along the longitudinal direction of the strip plate and cuts and divides the strip strip into multiple strips. In the winding device that winds each slit strip on the winding cylinder after that, the winding device has a rotation drive shaft and the winding cylinder attached to the outer periphery of the rotation drive shaft. Is composed of a plurality of ring-shaped divided winding drums divided in the axial direction, and a groove is formed in the axial direction on the outer peripheral surface of the rotary drive shaft which is in contact with the inner peripheral surface of the divided winding drum. The expansion / contraction bag body, which is expanded and contracted by the fluid pressure when the fluid is flown into the inside, is disposed in the recessed groove, and the inner peripheral surface of each split winding cylinder is moved by the fluid pressure of the expansion / contraction bag body. Separate pressing pieces for pressing are provided respectively on the surface side of the concave groove so as to move back and forth, and
A holder for fixing each divided pressing piece is disposed between the divided pressing pieces for pressing the inner peripheral surface of each divided winding cylinder by the fluid pressure of the expanding / contracting bag body that expands and contracts the rotational torque of the rotary drive shaft. It is configured to be transmitted to each divided winding cylinder via the.

[0015]

[0016]

The present invention having the above-described structure operates as follows. In order to slit the wide strip into a plurality of strips along the longitudinal direction of the strip and cut and divide the slit strip into multiple strips, each slit strip is wound on each split winding cylinder. When the rotary drive shaft of the device is rotated, the rotational torque of the rotary drive shaft is transmitted to each divided winding drum via the divided pressing piece that presses the inner peripheral surface of each divided winding drum by the fluid pressure of the expansion / contraction bag. Then, the split winding cylinder rotates integrally with the rotary drive shaft via the split pressing piece and the expansion / contraction bag to start winding the slit strip plate.

After that, the slit band plate is wound to some extent,
When the difference in the winding diameter starts due to the difference in the thickness of each slit strip, the peripheral speed on the winding surface increases in proportion to the size of the winding diameter, and the location where the winding diameter is large. The winding tension acting on the slit strip plate is larger than the winding tension acting on the slit strip plate at a portion having a small winding diameter.

At this time, due to the tension acting on the slit strip, a resistance torque is generated in each divided winding drum in a direction opposite to the rotating direction of the divided winding drum. Since the magnitude of the resistance torque increases in proportion to the tension acting on the slit strip plate, the resistance torque of the split winding cylinder having a large winding diameter increases.

When the resistance torque becomes larger than the rotational torque transmitted from the rotary drive shaft through the expansion / contraction bag and the split pressing piece, the split winding cylinder at that location rotates integrally with the rotary drive shaft. Instead, the split winding cylinder rotates while causing a large slip between the split winding cylinder and the split pressing piece, so that the average winding speed becomes low.

On the other hand, since the resistance torque of the split winding cylinder having a small winding diameter is smaller than that of the split winding cylinder having a large winding diameter, the sliding ratio is small and the average winding speed is high. As a result, the winding diameters become substantially the same, and it becomes possible to apply a substantially uniform winding tension to each slit strip plate.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described more concretely with reference to the embodiments shown in the drawings. Here, FIG. 1 is a partial cross-sectional outside view in which the upper half of the multi-strand strip winding device is a cross section and the lower half is an outer surface, and FIG. 2 is a cross-sectional view in the axial direction of the multi-strip strip winding device. is there.

In the figure, the winding device 1 has a wide strip 2
Is a device for slitting a plurality of slit strips 2a along the longitudinal direction of the strip 2 and cutting and dividing the slit strips 2a into a plurality of slit strips 2a. And a plurality of divided winding drums 4 attached to the outer circumference of the rotary drive shaft 3 as essential parts.

The split winding cylinder 4 has a slit band plate 2a directly wound on its outer peripheral surface, and is generally composed of a ring-shaped inner cylinder and an expansion / contraction cylinder piece attached to the outer periphery of the inner cylinder. However, the inner cylinder body and the expansion / contraction body piece are not shown in the drawings because they are not directly related to the gist of the present invention.

The number of divisions of the division winding cylinder 4 is the slit strip plate 2a.
The width is adjusted appropriately by changing the width. In addition, a ring-shaped groove is formed on the side surface of each divided winding drum 4 in order to improve sliding with another adjacent winding drum 4 or a wall surface, and a steel ball 4b is mounted in the groove. Rolling bearings are configured.

The rotary drive shaft 3 is interlockingly connected to a drive unit (not shown) composed of, for example, an electric motor or a hydraulic motor via a reduction gear. The split winding cylinder 4 is attached to the outer periphery of the rotary drive shaft 3, and the rotary drive shaft 3 serves to apply a rotational force to the split winding cylinder 4.

A concave groove 5 parallel to the axial direction of the rotary drive shaft 3 is formed on the outer peripheral surface 3a of the rotary drive shaft 3 which is in contact with the inner peripheral surface 4a of the split winding cylinder 4. A plurality of concave grooves 5 parallel to the axial direction are arranged at equal intervals in the circumferential direction of the rotary drive shaft 3,
For example, in the drawing of this embodiment, eight locations are formed.

The length of the groove 5 in the axial direction is longer than the total width of the plurality of divided winding cylinders 4 mounted on the rotary drive shaft 3, and both ends of the groove 5 are mounted on the rotary drive shaft 3. The plurality of divided winding drums 4 are further extended outward from the left and right ends. In each of the concave grooves 5 parallel to the axial direction, an expansion / contraction bag body 6 into which a fluid flows and expands / contracts by a fluid pressure is provided along the axial direction. A cushioning material 5 a is arranged between the bottom surface of each groove 5 and the expansion / contraction bag body 6.

Each expansion / contraction bag body 6 has a fluid such as a gas or a liquid sealed inside, and expands / contracts by the pressure of the fluid inside, and a split winding cylinder 9 via a split pressing piece 9 described later. 4 has a function of pressing the inner peripheral surface 4a. Each expansion / contraction bag body 6 has a length larger than the total width of the plurality of divided winding drums 4 mounted on the rotary drive shaft 3.

Both ends of each expansion and contraction bag body 6 are connected to one end of each divided fluid passage 7a formed radially from the inner center of the rotary drive shaft 3 in the circumferential direction of the outer peripheral surface 3a. The other ends of the radially divided fluid passages 7a are gathered at the center of the rotary drive shaft 3 and are connected to the main fluid passages 7 formed in the axial direction at the center.

As a result, all the inflation / deflation bags 6 are in communication with each other through the divided fluid passages 7a and the main fluid passages 7, and the inflation / deflation bags 6 have the same fluid pressure inside them and have the same fluid pressure. The inner peripheral surface 4a of the split winding drum 4 can be pressed by fluid pressure via a split pressing piece 9 described later.

The main fluid passages 7 extend in the axial direction of the rotary drive shaft 3, respectively, and one axial end side of the main fluid passage 7 is opened, and a fluid pressure pump (not shown) is provided in this opening. One end of is connected. The main fluid passage 7 and the divided fluid passages 7 are adjusted by adjusting the pressure of the fluid pressure pump.
The internal pressure of each expansion and contraction bag body 6 is adjusted through a.

A holder 8 extending in the longitudinal direction is arranged on the surface side of the expansion / contraction bag body 6 arranged in the concave groove 5. The holder 8 is arranged between the expansion / contraction bag body 6 and a split pressing piece 9 to be described later, and the holder 8 has a back surface side in contact with the expansion / contraction bag body 6 and a surface side on the opposite side. Split pressing piece 9
A large number of fixing grooves 8a for fixing the toner are formed. The fixing groove 8a is formed in the width direction of the holder 8, and the fixing groove 8a is formed corresponding to the mounting position of each split winding drum 4.

Each of the divided pressing pieces 9 is arranged on the front surface side of the concave groove 5 so as to be movable back and forth. That is, each divided pressing piece 9 has a mechanism for advancing and retracting the surface side of the concave groove 5 with respect to the inner peripheral surface 4 a of the divided winding drum 4 by the expansion and contraction of the expansion and contraction bag body 6.

The split pressing piece 9 directly presses the inner peripheral surface 4a of the split winding drum 4 with the fluid pressure of the expansion / contraction bag body 6 to transmit the rotational torque of the rotary drive shaft 3 to each split winding drum 4. At the same time, the split pressing piece 9 performs a function of adjusting excessive transmission of rotational torque by causing slippage with the inner peripheral surface 4a of the split winding cylinder 4.

Each divided pressing piece 9 is mounted in the fixing groove 8a of the holder 8 so that one divided pressing piece 9 and one divided winding cylinder 4 correspond to each other.
Are arranged so as not to press the inner peripheral surfaces 4a of the plurality of divided winding cylinders 4.

FIG. 3 is a schematic side view of a winding equipment equipped with a winding device for a multi-strip strip. In the figure, 2 is a strip plate, 2a is a slit strip plate, 10 is a rewinding machine, and 11 is a rewinding machine. The guide roller 12 is a slitter. As shown in the figure, the loop pit and tensioning device are not required, so the area required for the equipment is small and the equipment itself is simple.

Next, the operation of the winding device for a multi-strip strip based on the configuration of the above embodiment will be described below. Prior to the start of winding the multi-slit strip plate 2a, each slit strip plate 2a
It is necessary to clamp the tip of each of the divided winding drums 4 to the corresponding one, but this can be easily done by a known method that uses an adhesive tape to secure the ends and a clamp groove provided on the outer periphery of the divided winding drum 4. Done.

The drive shaft (not shown) is driven to rotate the rotary drive shaft 3. The rotation torque of the rotary drive shaft 3 is transmitted to each of the divided winding cylinders 4 via a divided pressing piece 9 that presses the inner peripheral surface 4a of each divided winding cylinder 4 by the fluid pressure of the expansion and contraction bag body 6, and the divided winding cylinders 4 are wound. The barrel 4 rotates integrally with the rotary drive shaft 3 via the expansion and contraction bag body 6, the holder 8, the split pressing piece 9 and the like to start winding the slit strip 2a.

By the way, when the slit strip plate 2a is wound with a constant tension, the required winding rotational force is "tension x winding diameter", and the winding rotational force must be increased as the winding thickness increases. This can be easily adjusted by controlling the fluid pressure of the expansion / contraction bag body 6 and increasing it in proportion to the winding diameter.

If the slit strip plate 2a of a certain strip is remarkably wound up, the slit strip plate 2a of the strip is wound up in a stretched state, so that the tension is increased and the diameter of the overweight is remarkably large. Together, the rotational force required to wind up the slit strip 2a exceeds the winding rotational force transmitted from the rotary drive shaft 3, so that the slit strip 2a of the strip is wound up. The winding cylinder 4 rotates while causing a large slip between the winding cylinder 4 and the divided pressing piece 9, and the average winding speed decreases.

During this period, the split winding drum 4 of the other strip continues to rotate integrally with the split pressing piece 9 or with a small slip,
Since the take-up rotational force transmitted as the take-up increases, the divided take-up cylinder 4 that has been rotating with a large slip will continue to rotate with a small slip.

In this way, the winding rotational force of each divided winding cylinder 4 can be maintained substantially constant, so that each slit strip plate 2a is divided and wound with a constant winding tension regardless of the plate thickness. It will be wound up on the barrel 4.

Moreover, the winding tension can be easily adjusted by adjusting the fluid pressure of the expansion / contraction bag body 6. In addition, since each expansion / contraction bag body 6 is in communication with each other, each expansion / contraction bag body 6 is
Since the fluid pressures of the two are the same, the same winding rotational force can be applied to each divided winding drum 4.

Since the wound multi-slit strips 2a tightly hold the divided winding drum 4 so that they cannot be easily pulled out from the divided winding drum 4, the outer circumference of the divided winding drum 4 is shown. It is composed of expansion / contraction cylinder pieces, and when the expansion / contraction cylinder pieces are wound in a state of being expanded in the radial direction and then withdrawn, the expansion / contraction cylinder pieces are contracted in the radial direction, so that each of the wound multi-strip strip plates. 2a is extracted from the split winding cylinder 4.

The present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

[0046]

As is apparent from the above description, the multi-strand strip winding device according to the present invention has the following effects.

(1) The take-up cylinder of the take-up device is a divided take-up cylinder, and each slit strip plate is taken up for each divided take-up cylinder, and each divided take-up cylinder has a predetermined tension or more. While acting on the slit strip, even if the other split winding cylinder continues to wind, the split winding cylinder acts on the slit strip by causing a slip between the split winding cylinder and the split pressing piece. By avoiding the tension from becoming larger than that and waiting until the other slit strips have the same tension, it is possible to make the winding tension of the slit strips wound on each split winding drum uniform. it can.

(2) Tension is not applied to the slit strip by directly or indirectly contacting a friction piece with the surface of the multi-slit strip as in the conventional tension applying device.
Since it is a mechanism that applies the winding tension while individually adjusting the rotational force of each divided winding cylinder of the winding device, it is possible to cause scratches or imprints due to pressing on the surface of the multi-slit slit strip. Therefore, it is possible to wind up the multi-slit slit strip, which is liable to cause scratches and patterns, without impairing the quality.

(3) Tension is not applied to the slit strip plate by directly or indirectly contacting a friction piece or the like with the surface of the multiple slit strip plate as in the conventional tension applying device.
Since it is a mechanism that applies winding tension while individually adjusting the rotational force of each split winding cylinder of the winding device, even if there is oil such as rust-preventing oil on the surface of the multi-slit slit strip, The rust preventive oil or the like causes slippage to make the winding tension unstable, and in some cases, the winding tension cannot be prevented at all, and a predetermined winding tension can be reliably applied.

(4) The winding tension of the multiple slit strips wound on the winding device is applied by the winding device itself while individually adjusting the rotational force of each divided winding cylinder of the winding device. Therefore, it is not necessary to install a separate tension applying device in front of the winding device as in the conventional case, and furthermore, the winding of each divided winding cylinder of the winding device can be individually interrupted as necessary. However, since the multi-row slit strip is wound up, the equipment for the loop pit for accommodating the slack is not required, and therefore, the tension applying device and the loop pit can be eliminated, which enables the required area of the equipment. Can be reduced, and the equipment can be simplified.

(5) In combination with the above effects, the expansion / contraction bag and the split pressing piece are used to press the inner peripheral surface of the split winding cylinder to adjust the winding tension. It is possible to reduce the width of division of the winding cylinder, and moreover, by using air pressure as the fluid pressure, a winding tension proportional to the air pressure can be obtained, and winding with low tension can be facilitated. Since the tension is adjusted by the fluid pressure and the fluids of all the expansion and contraction bags communicate with each other, the pressure can be easily adjusted. In addition to this, the expansion and contraction bag and each divided pressure
By arranging a holder to fix each divided pressing piece between
Since each divided pressing piece is fixed at a predetermined position,
It is possible to press only the inner peripheral surface of each divided winding drum,
When the pressure piece presses the inner peripheral surface of multiple split winding cylinders at the same time,
It can be surely prevented.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional outer surface view in which an upper half of a multi-strand strip winding device according to an embodiment of the present invention has a cross section and a lower half has an outer surface.

FIG. 2 is a cross-sectional view in the axial direction of a multi-strand strip winding device showing an embodiment of the present invention.

FIG. 3 is a schematic side view of a winding facility equipped with a winding device for a multi-stripe strip according to an embodiment of the present invention.

FIG. 4 is a schematic side view of a conventional winding facility.

[Explanation of symbols]

 1 Winding device 2 Strip plate 2a Slit strip plate 3 Rotation drive shaft 3a Outer peripheral surface 4 Split winding cylinder 4a Inner peripheral surface 4b Steel ball 5 Recessed groove 5a Buffer material 6 Expansion / contraction bag body 7 Main fluid passage 7a Split fluid passage 8 Holder 8a Fixing groove 9 Dividing pressing piece 10 Rewinding machine 11 Guide roller 12 Slitter 51 Tensioning device 52 Loop pit

Claims (1)

(57) [Claims] 1. A winding device for slitting a wide strip into a plurality of strips along the longitudinal direction of the strip to cut and divide into multiple slit strips, and then winding each slit strip around a winding cylinder. The winding device has a rotary drive shaft and the winding cylinder attached to the outer periphery of the rotation drive shaft, and the winding cylinder has a plurality of ring-shaped divided windings divided in the axial direction. A concave groove is formed in the axial direction on the outer peripheral surface of the rotary drive shaft that is in contact with the inner peripheral surface of the divided winding cylinder, and a fluid is introduced into the interior of the rotary drive shaft to expand and contract by fluid pressure. A shrink bag is disposed in the groove, and a split pressing piece that presses the inner peripheral surface of each split winding cylinder by the fluid pressure of the expanding and shrinking bag is movable back and forth toward the surface of the groove. Between each of the expansion and contraction bag and each divided pressing piece
A holder for fixing each divided pressing piece is arranged on the divided driving piece, and the rotational torque of the rotary drive shaft is expanded and contracted. A winding device for a multi-strip strip, which is transmitted to each split winding drum through the winding device.