JPH0798596B2 - Multi-strand strip winding tension applying device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is characterized in that a wide strip is slitted into a plurality of strips along the lengthwise direction of the strip and then cut into a plurality of strip strips to be divided into slit strips. When winding the slit strips on the winding drum of the winding device, each slit strip is pressed against the circumferential surface of the winding drum,
Even if there is a difference in the winding diameter of each coil due to plate thickness deviation, etc., all coils can be tightly wound in a direct system and slit band plates can be wound tightly and wound up. It is about.

[Conventional technology]

In general, the cross section of a wide strip is not perfectly flat but is thick at the center and thin at both ends.When slitting this, there is a deviation in the thickness of each slit strip after slitting at the center and both ends of the strip. Cause When each of these slit strips is wound by a mandrel, the thick slit strip has a larger winding diameter than the thin slit strip, and there is a difference in the winding speed of each slit strip at the center and both ends. Occurs,
The winding tensions of the slit strips wound on the mandrel become imbalanced. As a result, the slit strips on both ends wound around the mandrel are more flexible than the central part, and when pulled out from the mandrel, they become telescopic,
It has a drawback that it is crushed into an elliptical shape and cannot be rewound or transported.

Therefore, generally, in equipment for slitting and cutting and dividing into multiple slit strips, a device for applying a winding tension is provided while the slit strips are supplied to the winding device, and the multiple slits are provided. The strip is applied with a predetermined winding tension by this device and then wound on a common winding drum.

As a device for applying such a winding tension, for example,
JP-B-51-35458 and JP-A-56-136748 are known.

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

Further, the device disclosed in Japanese Patent Laid-Open No. 56-136748 utilizes an endless belt, and is a multi-slit slit band slitted between opposed outer surfaces of upper and lower endless belts. Through the 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 to press them together, and rotate the endless belt integrally with the moving slit strip. Thus, it is possible to apply a winding tension to the slit strip plate by a frictional force caused by sliding between the friction piece and the inner surface of the endless belt.

[Problems to be Solved by the Invention]

However, when the tension applying device is provided before winding the multi-slit strip strip, the winding tension is controlled by bringing a friction piece or the like into contact with the surface of the multi-slit strip strip.
Depending on the material of the strip and the type of surface treatment, scratches may occur and the quality may be impaired.

Further, by installing the tension applying device in the slitter line, the slitter line becomes long, and there is a problem that extra space is required in the working process.

The present invention has been made in view of the above problems and was devised to solve the problems, and the purpose thereof is to cause scratches on the surface of a multi-slit strip plate. It is possible to reliably apply a predetermined winding tension without using a winding device, and further, it is possible to simplify the winding equipment by eliminating the need to install a tension applying device in front of the winding device. An object is to provide a tensioning device.

[Means for solving problems]

In order to achieve the above object, the present invention provides a fluid pressure chamber that expands and contracts by fluid pressure on the outer circumference of a pressing shaft whose both ends are supported, and is smaller than the width of the slit strip plate on the outer circumference of the fluid pressure chamber. A plurality of split rings consisting of widths are connected to each other, a plurality of ring-shaped disassembling rolls are rotatably mounted on the outer circumference of these split rings, and each rotatably mounted split roll is attached to a wide strip plate. A configuration in which a plurality of strips are slitted along the longitudinal direction of the strip to be cut and divided into multiple slit strips and pressed against the surface of each slit strip wound on the winding cylinder of the winding device. Is.

[Action]

The present invention having the above configuration operates as follows.

When slitting a wide strip into a plurality of strips along the longitudinal direction of the strip and cutting and dividing each slit strip into a multi-slit strip, the fluid pressure chamber Fluid pressure is adjusted to a predetermined pressure, and the rotatably mounted split rolls are pressed against the surface of each slit strip plate wound on the winding drum.

Although the winding diameter of each slit strip varies as the winding progresses, each split roll that presses the surface of each slit strip wound on the winder cylinder has a fluid pressure chamber through each split ring. Since the fluid pressure chamber expands and contracts and the fluid pressure is the same at every location, each split roll follows the difference in the winding diameter of each slit strip while displacing in the radial direction. It acts so as to press the surface of each slit strip with the same pressure.

Therefore, despite the difference in the winding diameter, each slit strip plate receives the same winding tension with the same pressing force. Moreover, since each split roll is rotatable, each split roll that presses each slit strip rotates at the same speed as the winding speed of each slit strip, which may damage the surface of each slit strip. Acts like not to.

〔Example〕

Hereinafter, the present invention will be described more specifically based on the embodiments illustrated in the drawings.

-First Embodiment-Here, FIG. 1 is an overall side sectional view, FIG. 2 is a sectional view, and FIG.
The drawing is a side view of the winding position, and FIG. 4 is an operation explanatory view.

In the drawing, the winding tension applying device 1 is configured such that a wide strip is slitted into a plurality of strips along the longitudinal direction of the strip to cut and divide into a plurality of slit strips a and then each slit strip a.
Is a device that applies a predetermined winding tension to each slit strip a when the tape is wound on the winding drum c of the winding device b, and is provided adjacent to the winding device b. The winding tension applying device 1 is mainly composed of a pressing shaft 2, a fluid pressure chamber 3, a split ring 4, a split roll 5, and the like. A separator d for winding each slit strip a wound around the winding cylinder c at a predetermined winding position is provided in front of the winding tension applying device 1 and adjacent to the winding device b.

The pressing shaft 2 has a circular cross-sectional shape, is horizontally installed so as to be parallel to the winding cylinder c of the winding device b, and both ends of the pressing shaft 2 are rotatably supported by bearings 2a and 2b. Circular pressing shaft 2
A fluid pressure chamber 3 is disposed on the outer peripheral surface of the.

A plurality of expansion / contraction bags 3a are used in the fluid pressure chamber 3, and the plurality of expansion / contraction bags 3a are arranged along the axial direction of the circular pressing shaft 2 and the cross-sectional direction of the pressing shaft 2 is used. Are evenly arranged on the outer peripheral surface of the. A partition wall 3b is arranged on the outer peripheral surface of the pressing shaft 2 between the expansion and contraction bag bodies 3a. Partition wall 3b
Are radially even with respect to the cross section of the pressing shaft 2, and the pressing shaft 2
Are arranged in the axial direction.

Each of the expansion / contraction bags 3a has a function of sealing a fluid such as gas or liquid inside thereof and expanding / contracting by the pressure of the fluid to displace the split ring 4 mounted on the outer periphery thereof. One end of each expansion / contraction bag body 3a is connected to a fluid communication path 6a formed from the side surface of the circular ring 6 fitted to the pressing shaft 2 to the inside thereof, and each expansion / contraction bag body 3a uses this fluid. It communicates through the communication path 6a. The other end of each expansion / contraction bag 3a is completely sealed.

The fluid communication passage 6a formed inside the annular ring 6 communicates with the fluid passage 2c formed inside the pressing shaft 2 where the annular ring 6 is fitted. The fluid passage 2c is formed inside the pressing shaft 2 in the axial direction, one end side thereof is sealed, and a ventilation hole 2d is formed in the inner peripheral surface thereof toward the outer peripheral surface of the pressing shaft 2. There is. This vent hole 2d is desired for the fluid communication passage 6a formed inside the annular ring 6, and the fluid passage 2c of the pressing shaft 2 is brought into communication with the fluid communication passage 6a of the annular ring 6 via the ventilation hole 2d. ing.

The other end of the fluid communication passage 2c faces the end of the pressing shaft 2 on the bearing 2b side to form an opening 2e, which is open, and the opening 2e at one end of the fluid passage 2c is not shown. One end of the fluid pressure pump is connected, and the internal pressure of each expansion / contraction bag 3a forming the fluid pressure chamber 3 is adjusted by adjusting the pressure of the fluid pressure pump.

A plurality of split rings 4 are attached to the outer periphery of the fluid pressure chamber 3 arranged on the outer peripheral surface of the pressing shaft 2 so as to be connected in the axial direction of the pressing shaft 2. The width of the split ring 4 is smaller than the width of each slit strip a and further smaller than the width of the split roll 5. Each split ring 4 expands and contracts a fluid pressure chamber 3
It is displaced by the pressure of. Each of these split rings 4 is fitted to the outer circumference of the fluid pressure chamber 3 from the side of the bearing 2a. One end of the split ring 4 connected to the split ring 4 is supported by the side surface of the annular ring 6, and the other end is bearing. It is pinched from the 2a side by an internal nut 4a fitted to the pressing shaft 2.

In addition, on the outer periphery where a plurality of split rings 4 are connected,
Further, a plurality of split rolls 5 are mounted in the axial direction of the pressing shaft 2. The split roll 5 is a portion that directly presses the surface of each slit strip a wound on the winding drum c of the winding device b to apply a predetermined tension to each slit strip a. The width of each divided roll 5 is smaller than the width of each slit strip a,
Or the same.

Each split roll 5 includes an outer ring 5a, an inner ring 5b, and an outer ring 5a and an inner ring.
Each of the split rolls 5 has a structure similar to that of a rolling bearing, and each split roll 5 is rotatable. A soft material 5d such as a urethane resin or a rubber material is attached to the outer circumference of the outer ring 5a of each split roll 5. This soft material 5d directly presses the surface of the slit strip a which is wound around the winding drum c.

Further, a ring-shaped holding material 5e that holds the distance between the divided rolls 5 at a constant interval is arranged on the outer circumference of the divided ring 4 between the adjacent divided rolls 5. The spacing between the divided rolls 5 is adjusted by the holding material 5e so that the divided rolls 5 are always adjusted to correspond to the winding positions of the slit strips a wound on the winding drum c. The holding members 5e arranged on both ends of the left and right split rings 4 are clamped by the side surface of the ring 6 and the external nut 5f. The outer nut 5f is screwed onto the outer peripheral surface of the inner nut 4a.

Next, the operation based on the configuration of the first embodiment will be described below.

In the case of slitting a wide strip plate along the longitudinal direction of the strip into a plurality of slit strips a and cutting and dividing each slit strip a into a winding cylinder c, The fluid pressure in the fluid pressure chamber 3 is adjusted to a predetermined pressure, and the rotatably mounted split rolls 5 are pressed against the surfaces of the slit strips a wound on the winding drum c.

To adjust the fluid pressure in the fluid pressure chamber 3, a fluid pressure pump (not shown) is operated to send, for example, air as a fluid into the fluid passage 2c from the opening 2e at the end of the pressing shaft 2. The air passes through the fluid passage 2c to the fluid communication passage inside the circular ring 6 from the vent hole 2d.
6a, flows through the fluid communication path 6a and flows into each expansion / contraction bag body 3a constituting the fluid pressure chamber 3, and the air pressure as a fluid pressure inside each expansion / contraction bag body 3a is made constant.

Each expansion / contraction bag 3a having a constant air pressure radially presses the inner peripheral surface of each split ring 4 with a constant pressure to support each split ring 4. At this time, since the surface of each expansion / contraction bag 3a has no unevenness, the circumferential surface of each split ring 4 also has no unevenness, and each split ring 4 forms the same circumferential surface. Therefore, each of the split rolls 5 mounted on the outer circumference of each of the split rings 4 also forms the same peripheral surface, and in this state, each of the split rolls 5 of each slit strip plate a wound on the winding drum c is wound. Press on the surface.

Since each split roll 5 pressed against the surface of each slit strip a has the same structure as a rolling bearing and is rotatable, it rotates at the same speed as the winding speed of each slit strip a. To do. In this way, each split roll 5
Rotate at the same speed as the winding speed of each slit strip a, so that the split roll 5 and the pressing surface of the slit strip a do not slip, and therefore the pressing surface of the slit strip a does not slip. There is no risk of scratches.

By the way, as the winding progresses, each slit strip a
There is a difference in the winding diameter. At this time, the divided rolls 5 for pressing the surface of each slit strip a wound on the winding drum c
Receives the pressure of each expansion / contraction bag 3a forming the fluid pressure chamber 3 via each split ring 4, and each expansion / contraction bag of the fluid pressure chamber 3
Since 3a expands and contracts and the fluid pressure is the same at every location, each split roll 5 is displaced in the radial direction as the expansion and contraction bag body 3a expands and rolls each slit strip a. The surface of each slit strip a is pressed according to the difference in the take-off diameter.

In this case, since the air inside each expansion / contraction bag body 3a communicates with each other, the air pressure inside each expansion / contraction bag body 3a becomes the same, and each displaced split roll 5 is supported by the same air pressure. The displacement of each divided roll 5 presses the surface of each slit strip a with the same pressing force. Therefore, each slit strip a has the same winding tension despite the difference in the winding diameter. Will receive.

-Second Embodiment- Fig. 5 is an overall side sectional view, and Fig. 6 is a side view of a winding portion.

In the figure, the winding tension applying device 11 is a slit band plate a.
It also has a function as a separator that applies a winding tension to the coil and also winds each slit strip a wound on the winding cylinder c at a predetermined winding position. Therefore, flanges 12 are formed in the circumferential direction on both ends of each divided roll 5,
Further, a ball 13 is rotatably inserted between the flanges 12 and has a structure similar to that of a rolling bearing, and the adjacent divided rolls 5 are not regulated by each other. It can be rotated independently.

The configuration other than the above is the same as the configuration of the first embodiment, and the same reference numerals are given and the description thereof is omitted.

Also, the operation based on the configuration of the second embodiment is similar to that of the first embodiment, and therefore its explanation is omitted.

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.

〔The invention's effect〕

As is clear from the above description, according to the winding tension applying device for a multi-strand strip according to the present invention, there is a difference in the winding diameter of each slit strip as the winding progresses. Each split roll that presses the surface of each slit strip that is wound around is subject to the pressure of the fluid pressure chamber via each split ring, and the fluid pressure chamber expands and contracts, and the fluid pressure is the same at every location. Therefore, each split roll can follow the difference in the winding diameter of each slit strip while pressing in the radial direction and press the surface of each slit strip with the same pressure.

Therefore, the slit strips can be pressed with the same pressure regardless of the difference in the winding diameter, and thus the same winding tension can be applied.

Moreover, since each split roll is rotatable, each split roll that presses each slit strip rotates at the same speed as the winding speed of each slit strip, which may damage the surface of each slit strip. Absent.

In addition, since the device is arranged at a position where it is wound around the winding drum, it is not necessary to install a tension applying device in front of the winding device, the space of the winding equipment can be reduced, and the simplification can be achieved.

In addition, unlike the conventional one in which the winding tension is applied at a position distant from the winding position, the winding tension is applied to each slit strip plate at the position to be wound by the winding cylinder. In addition, it is not necessary to increase the winding tension in consideration of the weight of the slit strip between the winding position and the winding tension applying point, and the winding load of the winding device can be reduced. , Has a very new and beneficial effect.

[Brief description of drawings]

1 to 4 show a first embodiment of a winding tension applying device for a multi-strip strip according to the present invention, wherein FIG. 1 is an overall side sectional view, and FIG. 2 is a sectional view. FIG. 3 is a side view of the winding portion, and FIG. 4 is an operation explanatory view. FIG. 5 and FIG. 6 show the second embodiment, and
The figure is an overall side sectional view, and FIG. 6 is a side view of a winding portion. (Explanation of symbols) 1: winding tension applying device, 2: pressing shaft 2a: bearing, 2b: bearing 2c: fluid passage, 2d: vent hole 2e: opening, 3: fluid pressure chamber 3a: expansion and contraction bag, 3b: Partition wall 4: Split ring, 4a: Internal nut 5: Split roll, 5a: Outer ring 5b: Inner ring, 5c: Ball 5d: Soft material, 5e: Holding material 5f: External nut, 6: Ring 6a: Fluid connection Passage 11: Take-up tension applying device, 12: Tsuba 13: Ball a: Slit strip, b: Take-up device c: Take-up cylinder, d: Separator

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tatsuo Nagano 1 Kamimachi, Sasebo City, Nagasaki Japan Development Consultant Co., Ltd. (56) References JP 62-46846 (JP, A) JP 61-37648 (JP, A) Jitsuko Sho 44-25042 (JP, Y1)

Claims (1)

[Claims] 1. A fluid pressure chamber that expands and contracts by fluid pressure is provided on the outer circumference of a pressing shaft whose both ends are supported, and a plurality of split rings having a width smaller than the width of the slit strip plate are provided on the outer circumference of the fluid pressure chamber. A plurality of ring-shaped split rolls are rotatably mounted on the outer circumference of these split rings, and the split rolls are rotatably mounted in a wide strip in the longitudinal direction of the strip. A multi-stripe strip, characterized in that it is slitted into a plurality of strips along it, cut and divided into multi-slit strip strips, and pressed against the surface of each slit strip strip wound on the winding drum of the winding device. Plate tensioning device.