JPS6229347B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention adjusts the unbalance of the winding tension of each strip caused by the thickness deviation after slitting in the slitting line of the strip, and makes the tension uniform. This invention relates to a device for applying tension to a strip.

BACKGROUND ART Conventionally, a roller bridle system and a tension pad system are known as means for applying tension to a strip in a slitting line.

In the roller bridle method, a roller bridle is provided in the middle of feeding the slitted strip to a winder, and the strip is wound around the roller to apply tension.

That is, each slitted strip is wrapped around several rollers at the same time, and tension is applied by the braking force of a generator or brake device connected to the rollers. In this case, by appropriately selecting the frictional resistance on the surface of the strip and roller,
The strip is fed out without slipping on the roller surface.

However, the cross section of the strip is not completely flat;
It is usually thick in the center and becomes thinner towards the ends. If such a strip is wound onto a mandrel, there will be a difference in the winding diameter between the center and both ends, and a difference will occur in the winding speed, resulting in imbalance in the tension of each strip. In this case, the coil at both ends wound on the mandrel is wound more softly than the coil at the center, so when it is removed from the mandrel, it becomes telescopic or crushed into a circular shape, making it difficult to unwind or transport. It becomes an impossible coil.

Furthermore, when the braking force is adjusted to apply appropriate tension to each strip at both ends, the strip near the center of the roller will slide on the surface of the roller. In this case, product defects such as sliding scratches and reel marks occur on the surface of the coil wound on the mandrel.

In addition, in the tension pad method, a tension pad is provided in the middle of feeding the slitted strip to a winding machine, and the strip is crimped to apply tension.

In other words, a pair of parts with felt material etc. pasted on the surface of the rootstock are placed vertically opposite each other, each strip of strip is electrically connected, and the felt material is banded by a reduction adjustment device attached to the upper or lower part. It is crimped onto the plate, and tension is applied to the band due to the sliding friction resistance between the felt material and the band.

In this case, a separate rolling adjustment device can be installed for each strip, so the tension in the strip can be balanced and the strip can be wound onto a mandrel. Product defects occur.

As explained above, with the conventional method, it is impossible to wind the strip without causing any scratches on the surface of the strip, and it cannot be used for products that are sensitive to scratches.

Problems to be Solved by the Invention The present invention provides a strip tensioning device that compresses each strip from the upper and lower surfaces to apply uniform tension to the strip and does not cause any slippage on the surface of the strip. is intended to provide.

Means for Solving the Problems In order to achieve the above objects, the present invention includes a plate-shaped crimping metal fitting, and a crimping metal fitting that is stretched around a pair of pulleys and pulled around the plate-shaped crimping metal piece by a winding machine. Towed by the moving strip, they rotate together at the same speed without slipping, and are arranged side by side horizontally with respect to the moving direction of the strip, and the coefficient of friction on the inner circumferential surface is equal to that on the outer circumferential surface. The tension applying head, which is composed of a flexible annular band formed to have a coefficient of friction smaller than that of and at least one of the crimp fittings is attached to the underframe via a pressure adjustment device.

Embodiments Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

In FIG. 1, a plate-shaped crimp fitting 19 having approximately the same width as the strip plate 1, an annular band 21 formed to rotate around the plate-shaped crimp fitting 19 and stretched by a pulley 20, and a plate are shown. The tension applying head 23 is composed of a frame 22 carrying a shaped crimping metal fitting 19 and a pulley 20.
A tensioning head 27 having the same configuration as the tensioning head 23 described above is disposed below the strip 1 and facing the tensioning head 23 so as to form a common clamping path, and is adjusted by a pressure regulating device 25. It is attached to the machine frame 26 so that a reaction force is generated by the pressing force of the plate-shaped crimping metal fitting 19. A take-up device 28 is attached to the pulley 20 to apply a constant tension to the flexible annular band 21 consisting of an endless belt.

A plurality of annular bands 21 formed to rotate around the plate-shaped crimping hardware 19 are arranged adjacent to each other in the lateral direction with respect to the moving direction of the band plate 1 . The annular body 21 is made of a flexible endless belt, and the outer circumferential surface in contact with the strip plate 1 is made of a material with a large friction coefficient, such as soft nylon or rubber, to reduce slippage, and the inner circumferential surface in contact with the plate-shaped crimp fitting 19 is made of a material with a large friction coefficient, such as soft nylon or rubber. The surface is made of a self-lubricating material with a small coefficient of friction, such as hard nylon or copper plate, to increase slippage. Further, as a method of imparting self-lubricating properties to the inner circumferential surface, there is a method of attaching a lubricant only to the inner circumferential surface. In such a case, the device includes a flexible annular band 21 consisting of an endless belt and a plate-shaped crimping metal fitting 19.
All you need to do is install piping to supply lubricant to the gap between the

The pressure regulating device 25 described above is connected to the tension applying head 2.
The underframe 22 of No. 3 and the plate-shaped crimp metal fitting 19 are connected via a spring 29, and the annular band 21 is brought into close contact with the running band plate 1, thereby preventing slippage on the surfaces of the band plate 1 and the annular band 21. It is.

The pressure adjustment device 25 includes a guide rod 32 that is inserted into an adjustment nut 30 screwed onto the upper plate of the underframe 22 and has a jaw portion 31 at the upper end and a threaded portion at the lower end. The guide rod 3
The spring 29 is installed between the adjustment nut 30 of No. 2 and the plate-shaped crimp fitting 19.

With such a configuration, the band plate 1 generated during movement
A flexible annular band 2 consisting of an endless belt whose vertical slight movements
1 and is absorbed by the spring 29, the flexible annular band 21 made of an endless belt is always in close contact with the band plate 1 and prevents slippage.

The compression force is adjusted by rotating the adjustment nut 30, and in conjunction with the pressure adjustment device 25, an optimum pressure force can be applied to the strip plate 1.

Although the pressure regulating device 25 in the above embodiment is attached to the tension applying head 23 above the strip 1, it is needless to say that the pressure adjustment device 25 is not limited to this. tensioning head 27 or both upper and lower tensioning heads 23,2
7 may be installed.

In addition, a pressure adjustment device 25 may be provided to each tensioning head so that the pressure force can be adjusted for each strip 1 slit into several strips, or a plurality of strips 1 may be slit into multiple strips. A pressure adjustment device 25 may be interposed so that the pressing force can be adjusted at the same time.

Effect Next, the effect of the configuration of the above embodiment will be explained.

Start the slitting line and pressure adjustment device 2
5, the plate-like crimping hardware 19 crimps the flexible annular band 21 consisting of an endless belt, thereby crimping the flexible annular band 21 consisting of an endless belt.
rotates around the plate-shaped crimp fitting 19 at the same speed as the strip 1. That is, the annular band 21 is pulled by the band plate 1, which is pulled and moved by a winding machine, and rotates at the same speed. In other words, the rotation of the annular band 21 is caused by the band plate 1 moving while being pulled by the winding machine, and the drive source for rotating the annular band 21 is caused by the band plate 1 moving while being pulled by the winding machine. It is 1. Therefore, the annular band 21 will not rotate unless it comes into contact with the band plate 1.

In this case, by adjusting the operation of the pressure regulator 25, the flexible annular band 2 consisting of the band plate 1 and the endless belt is
To prevent slipping on the surface with 1,
In other words, the flexible annular band 21 consisting of an endless belt and the plate shape are arranged so that the annular band 21 is pulled by the moving band plate 1 pulled by a winding machine and rotates at the same speed as one unit without slipping. If it is made to slide like a plate on the surface with the crimp metal fitting 19, the frictional resistance caused by this sliding will apply tension to the strip plate 1.

That is, the coefficient of friction on the inner circumferential surface of the flexible annular band 21 made of an endless belt is made smaller than the friction coefficient on the outer circumferential surface, and the inner circumferential surface is made smaller before slippage occurs on the outer circumferential surface of the flexible annular band 21 made of an endless belt. Tension can be applied without causing flaws on the surface of the strip plate 1, which adjusts the pressure bonding force so as to cause slippage. In other words, the plate-shaped crimping hardware 19 that presses the inner peripheral surface of the annular band 21 that is rotated by the band plate 1 plays a so-called brake role, and the band that is located between the winding machine and the annular band 21 acts as a brake. This applies tension to the plate 1.

Effects of the Invention As is clear from the above description, according to the present invention, the plate-shaped crimping hardware that applies crimping force to the band plate via the annular band is attached to the underframe via the pressure adjustment device, so the pressure can be adjusted. The pressure force can be adjusted by operating the device, and the optimal pressure force can be applied to the strip. This more reliably applies equal tension to each slitted strip, making perfect coiling possible, and making it possible to produce coils with no scratches on the surface of the strip. be able to.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view of the device, and FIG. 2 is a partial sectional view of the device. 1...Strip plate, 19...Plate-shaped crimp metal fitting, 2
0... Pulley, 21... Annular band, 22... Underframe, 23, 27... Tension applying head, 25... Pressure adjustment device, 26... Machine frame.

Claims (1)

[Scope of Claims] 1. A plate-shaped crimping hardware and a band plate that is stretched between a pair of pulleys and moved around the plate-shaped crimping hardware by a winder, and is pulled together without slipping. A plurality of flexible flexible strips that rotate at the same speed, are arranged side by side in a horizontal direction with respect to the direction of movement of the strip, and are formed so that the coefficient of friction on the inner circumferential surface is smaller than the coefficient of friction on the outer circumferential surface. A tension-applying head composed of an annular belt and a frame supporting a plate-shaped crimping metal is held in the machine frame in opposition to each other so as to form a common clamping path, and at least one of the crimping metals is held on the frame. A strip tensioning device characterized in that it is attached to a frame via a pressure regulating device. 2. The strip tension applying device according to claim 1, wherein a plate-shaped crimped metal fitting is supported on an underframe via a spring. 3. Claim 1, in which the inner and outer circumferential surfaces of the flexible annular band are formed of different materials so that the coefficient of friction on the inner circumferential surface is smaller than the coefficient of friction on the outer circumferential surface.
The strip tensioning device described in Section 3. 4. Claim No. 4 is provided with a device for applying a lubricant to the gap between the plate-shaped crimped metal fitting and the flexible annular band so that the coefficient of friction on the inner circumferential surface is smaller than the coefficient of friction on the outer circumferential surface. The strip tensioning device according to item 1.