JPH0710403B2 - Tension pad mounting structure for tension generator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tension generator which is installed as a pair with a winder, and which makes pressure contact with tension pads on the front and back of a metal strip being wound to generate tension on the metal strip. The attachment structure of the tension pad.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, for example, in a slitter line 30 of a metal strip, each slit line (hereinafter simply referred to as "metal strip M") is wound regardless of variations in its plate thickness. In order to apply a tightening force and wind the film uniformly, a tension generator 32 is usually provided in parallel with a winder (recoiler) 33 in pairs. In the figure, 34 is a looping pit, 35 is an uncoiler, and 36 is a slitter.

The tension generator 32 restrains the metal strip M between the device 32 and the winder 33 to generate tension,
As a result, a desired winding tightening force is generated in the winder 33, and conventionally, various objects are generally pressed against the moving metal strip M as a means for applying the restraining force.

For example, according to the belt bridle system,
An endless belt having a large friction coefficient is pressed against the front and back of the metal strip M by a slider, and the endless belt is rotated at the same speed as the moving speed of the metal strip M to generate frictional resistance between the endless belt and the slider. ,
The metal strip M is constrained to generate tension. However, according to this method, a large amount of frictional heat is generated between the endless belt and the slider, and it is necessary to cool it, which has the drawback of requiring a large-scale water cooling device.

In addition to the above, a method of applying a winding tension to the metal strip M by adjusting the rotation speed of the grooved rubber roll is generally used, but even in this case, the friction heat generated in the rubber roll is absorbed. Therefore, a large-scale water cooling device is required.

On the other hand, as a method which does not require this cooling means, a tension generator of tension pad type has been conventionally used. In this device, a tension pad made of non-woven fabric such as felt is pressed against the front and back of the moving metal strip M to apply a restraining force to the metal strip M.
According to this, since most of the frictional heat generated is radiated through the metal strip M, no special cooling device is required, and while the structure is simple, a strong binding force can be obtained by adjusting the pressing force. You can

Further, in the case of the former two methods, it is necessary to install a separate wiper device in order to wipe off the dirt adhering to the metal strip M. According to this tension pad method, the tension is increased. Since the pad functions as a wiper, there is an advantage that no special device is required for the pad.

As described above, according to the tension generator of the tension pad system, the tension can be generated while wiping off the adhered dirt, so that it has been widely used in the slitter line of the metal strip M or the like.

[0009]

However, the tension generator of the tension pad system has the following problems.

First, the tension pad is a metal strip M.
Since it functions as a wiper that wipes off the dirt adhering to the surface, it is necessary to clean the dirty tension pad for each work unit, but the area where this tension pad is mounted is usually a narrow and dangerous area. Therefore, it was not possible to perform sufficient cleaning work despite the time required.

Secondly, when the tension pad is pressed against the metal strip M slit in multiple lines, the tension pad is scratched by the edge of each line, so that the tension pad must be replaced.

Thirdly, since the metal strip M has different frictional resistance depending on its material, plate thickness, surface finishing degree, etc.,
Select a tension pad that matches the friction coefficient,
It had to be replaced each time.

As described above, the tension pad is treated as a consumable item and needs to be replaced frequently. On the other hand, since the tension pad is pressed against the moving metal strip M, the movement of the metal strip M is prevented. Therefore, it is necessary to firmly fix the tension pad to the base so that it does not shift from the base or peel off from the base.
Therefore, various fixing methods have been devised conventionally.

For example, as shown in FIG. 6, the rear end edge (the left end edge in the drawing) of the tension pad 51 is wound around a bar 52a provided on the base 52, and the contact plate 53 is attached to this winding end.
53 was applied and fixed with bolts, and the winding end was sandwiched between the two contact plates 53, 53 to be fixed.

As another fixing method, for example, as shown in FIG. 7, a tension pad 61 is wound around a strip plate material 60 and fixed by hammering nails 63 to 63, and the strip plate material 60 is fixed to a base plate 62. Was being done.

As described above, the tension pad 51 (or 61) is attached to the base 52 (or 6) by various conventional methods.
Although efforts have been made to firmly fix it to 2), the fixing work required a considerable amount of time and tips by any method, and the mounting strength was not sufficient for that. Moreover, it is very uneconomical to provide the tension pad with an extra portion that is not pressed against the metal strip M.

As described above, although the tension pad needs to be replaced as a consumable item frequently, but it is firmly attached to the base, the replacement work is troublesome and time-consuming. As a result, its maintenance became more difficult.

If the tension of the tension pad is insufficient, the metal strip M cannot be given a sufficient restraining force, and if the metal strip M is a stainless steel plate, a high-grade surface-treated steel plate, or the like. The surface of the tension pad was scratched and the wiper function was deteriorated, which made the tension pad type tension generator extremely difficult to use. For this reason, the tension pad method tends to be shunned without the advantages of the tension pad method.

The present invention has been made in view of the above-mentioned problems relating to the conventional tension pad system, and has a structure that can be firmly fixed without peeling off when it is pressed against the moving metal strip M. Nevertheless, by making it easy to attach and detach, the tension pad can be easily maintained, and the advantages of the original tension pad method can be fully exerted. An object is to provide a pad mounting structure.

[0020]

DISCLOSURE OF THE INVENTION According to the present invention, a tension pad is pressure-welded to the front and back of a metal strip which is installed as a pair with a winding machine and is wound and moved by the winding machine. In order to solve the above-described conventional problems in the tension pad type tension generator that generates tension on the base, a large number of fine protrusions are provided on the mounting surface of the base on which the tension pad is mounted, and the tension pad is attached to the metal strip. When pressed, the numerous fine protrusions bite into the tension pad, and the frictional resistance between the tension pad and the base becomes larger than the frictional resistance between the tension pad and the metal strip. , Is attached to the base in a state in which movement of the metal strip in the movement direction is blocked.

[0021]

According to the above structure, the tension pad is pressed against the metal strip by applying a pressing force to the base while the tension pad is applied to the mounting surface of the base, and thus the tension pad is attached to the base. Become.

That is, when the tension pad is in the pressure contact state, a large number of fine projections provided on the mounting surface of the base plate bite into the tension pad, so that the frictional resistance between the tension pad and the base plate is different from that of the tension pad. It becomes larger than that between the metal strip and this tension pad is firmly attached to the substrate while the movement of the metal strip in the moving direction is blocked.

On the other hand, the tension pad is brought into pressure contact with the metal strip by actuating the hydraulic cylinder to lower the frame and applying a pressing force to the base. Since the movement in the press contact direction is blocked and it will be in a state of being attached to the base, if you raise the frame and release the pressure contact to the metal band, it will fall from the base and be removed, or after releasing the pressure contact, It can be easily removed from the base by peeling it off.

[0024]

Embodiments of the present invention will now be described with reference to FIGS.

In this example, the tension generator is installed as a pair with the winder in the slitter line, and the metal strip M to be threaded has a plate thickness of 0.3 to 3 m.
A case of a stainless steel plate of m will be described as an example.

Further, since there is no particular change in the tension generator except the base for mounting the tension pad, the illustration is omitted.

FIG. 1 shows the boards 1 and 2 and tension pads 3 and 4 attached to the boards 1 and 2.

The bases 1 and 2 are arranged on the upper and lower sides in the drawing so as to face both sides of the metal strip M, and the base 1 on the upper side in the drawing has two hydraulic cylinders (cylinder diameter 100 m).
m) is attached to a frame (not shown) supported so as to be able to move up and down.

This hydraulic cylinder is approximately 120 kg / cm ^2.
It is connected to a hydraulic pressure source capable of supplying the hydraulic pressure of, and by this, a maximum pressure of about 18 tons can be generated in the frame (upper base 1). The pressure of this board 1 is the meter of the controller (not shown)
Can be confirmed by, and the restraining force of the metal strip M can be arbitrarily adjusted by adjusting the pressing force. On the other hand, the lower base 2 in the drawing is placed and fixed on the base B.

Next, the surfaces of the bases 1 and 2 facing the metal strip M, that is, the lower surface of the upper base 1 and the upper surface of the lower base 2 are used as the mounting surfaces of the tension pads 3 and 4, respectively. Sandpapers 5 and 6 having a roughness of about 80 are attached to the both mounting surfaces over the entire surface by an adhesive.

The tension pads 3 and 4 are made of a felt material, which is formed by finely entangled ultrafine fibers, and has a certain elasticity (a length of 1300 × a width of 270 × a thickness of 7 m).
m), and has a length that enables pressure contact over the entire width of the metal strip M to be threaded.

Next, an operation procedure of the tension generator having the above structure will be described. First, the upper base 1 is moved upward, and the tension pad 4 is placed on the lower base 2. After that, the metal strip M is passed between the upper and lower substrates 1 and 2, and one end thereof is set on the winder.

Next, the upper tension pad 3 is placed on the upper surface of the metal strip M at a position substantially aligned with the lower tension pad 4, and then the hydraulic cylinder is operated to lower the frame. Let As a result, the base 1 descends and the upper tension pad 3 is pressed against the upper surface of the metal strip M, and thus the lower tension pad 4 is pressed against the back surface of the metal strip M, whereby a restraining force is applied to the metal strip M. Granted.

After the tension pads 3 and 4 are pressed against the front and back of the metal strip M as described above, the winder is operated to wind up the metal strip M. At this time, since a predetermined restraining force is applied to the metal strip M by the tension generator,
Tension is generated in the metal strip M that is wound up and moved, so that the metal strip M is evenly wound up by the winder with a required tightening force.

Here, the pressing force of the hydraulic cylinder is usually adjusted in the range of 2 to 12 tons depending on the properties of the metal strip M (thickness of plate or degree of surface treatment, etc.), and the metal strip M is passed through. The tension is applied in the range of 1 to 5 tons. Then, by adjusting the tension applied to the metal strip M in this manner, it is possible to obtain the optimum tightening force for the property of the metal strip M.

This example is constructed as described above,
With this configuration, the following operational effects are achieved.

That is, the tension pads 3 and 4 are simply pressed against the bases 1 and 2 to be pressed against the metal strip M, but the sandpapers 5 and 6 are attached to the tension pads 3 and 4 at the time of pressing. Since many of the fine protrusions of the
The frictional resistance between the tension pads 3 and 4 is larger than the frictional resistance generated between the tension pads 3 and 4 and the moving metal strip M, whereby the movement of the tension pads 3 and 4 in the plane direction, that is, the metal strip M. Is surely prevented from moving in the moving direction, and is firmly attached to the bases 1 and 2.

Here, according to an example actually carried out by the applicant under various conditions, a polyester felt material is used as the tension pads 3 and 4, and the tension pads 3 and 4 are used.
Is adjusted in the range of 2 to 12 tons of pressure and pressed against the metal strip M (stainless steel plate), and the strip running speed is 60 to 120 m / mi.
Even when the metal strip M is wound up with a tension of 1 to 5 tons and wound up with n, both tension pads 3, 4
It was possible to maintain a firmly attached state without shifting or peeling from the bases 1 and 2.

On the other hand, in the past, one operator took about 30 minutes to replace the tension pads, but according to the tension pad mounting structure of this example, the upper and lower tension pads 3, 4 are replaced. Can be removed from the bases 1 and 2 by releasing the pressure applied to the upper and lower bases 1 or can be easily removed, so that the replacement can be performed with one touch.

In this way, the upper and lower tension pads 3,
Although 4 is firmly attached to the bases 1 and 2,
Since the replacement can be performed with one touch, the maintainability of the tension pads 3 and 4 is improved, and the cleaning or replacement can be performed frequently and easily.

By sufficiently maintaining the tension pads 3 and 4, the advantages of the tension pad system can be fully exerted. That is, it becomes possible to wind the film uniformly on the winder while satisfying the aesthetic treatment of the surface particularly required for the exemplified stainless steel plate or high-grade surface-treated steel plate.

In this example, the sandpapers 5 and 6 are attached to the bases 1 and 2, and the fine protrusions of the sandpapers 5 and 6 are bited into the tension pads 3 and 4, so that the tension pads 3 and 4 and the bases are Although the case of increasing the frictional resistance between the first and second members is illustrated, the present invention is not limited to this. For example, as shown in FIG. 3, one locking member 10a of the surface fastener 10 is provided on the tension pads 3 and 4 side. , The other receiving member 10b may be attached to the bases 1 and 2 respectively, and the tension pads 3 and 4 may be attached to the bases 1 and 2 by locking both members 10a and 10b. In this case, In addition, it is possible to achieve both a firm attachment property of the tension pad and easy detachability, and improve its maintainability. Although only the lower base 2 and the tension pad 4 are shown in the drawing, the same applies to the upper base 1 and the tension pad 3.

Furthermore, not only the sandpaper 5, 6 or the surface fastener 10 but also, for example, as shown in FIG. It may be provided. Although only the lower substrate 20 is shown in the drawing, the same applies to the upper substrate.

In this embodiment, the tension pads 3 and 4 are made of felt material in which ultrafine fibers are intimately entangled with each other. However, the material is not limited to this, and is made of, for example, fur or corten made of strong fibers. The point is that when mounted on the base of the tension generator, a large number of fine projections provided on the base bite into the base and the frictional resistance generated between the base and the metal strip M is generated. The friction resistance may be larger than the frictional resistance generated.

Further, the tension generator having the attachment structure for the tension pad of this example is not limited to a slitter line, but is also used in equipment equipped with a winder for winding a metal strip such as a side trimmer of a shear line. It is widely applicable.

[0046]

According to the present invention , when the tension pad is pressure-welded, the friction pad between the tension pad and the base is made larger than that between the tension pad and the metal strip, so that the tension pad can be used as a base. Since it is configured to be attached to the device, its strong attachment property and easiness of attachment / detachment are compatible with each other, and its maintainability is improved. Therefore, the advantages of the tension generator of the tension pad system can be fully exerted.

Further, by using the tension generator of the tension pad system, the aesthetic treatment of the surface which is particularly required for the stainless steel plate etc. can be achieved without installing a large-scale cooling device or wiper device in the case of other systems. It is possible to generate tension while being sufficiently satisfied.

Further, unlike the conventional case, the tension pad does not require an extra portion for attaching to the base, and only the portion that is actually pressed against the metal strip is sufficient. Therefore, an expensive tension pad is wasted. Will not do
Therefore, there is an effect that the yield can be increased.

[Brief description of drawings]

FIG. 1 is a partial perspective view of a tension pad and its mounting base according to an embodiment of the present invention .

FIG. 2 is a side view when a tension pad is pressure-welded.

FIG. 3 is a side view showing another aspect of the attachment structure of the tension pad.

FIG. 4 is a perspective view of another embodiment showing the attachment structure of the tension pad.

FIG. 5 is an overall view of a slitter line.

FIG. 6 is a side view showing a conventional example of a tension pad attachment structure.

FIG. 7 is a side view showing a conventional example of another aspect of the tension pad attachment structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Upper base, 2 ... Lower base 3 ... Upper tension pad, 4 ... Lower tension pad 5 ... Upper sandpaper, 6 ... Lower sandpaper 10 ... Surface fastener, 21 ... Knurling B … Base, M… Metal band 30… Slitter line 32… Tension generator

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-130817 (JP, A) Actually published 52-117529 (JP, U)

Claims (1)

[Claims] 1. A tension pad system, which is installed as a pair with a winder, and in which tension pads are pressed against the front and back of a metal strip wound and moved by the winder to generate tension in the metal strip. In the tension generator of the above, a large number of fine protrusions are provided on a mounting surface of a base on which the tension pad is attached, and the tension pad has a large number of fine protrusions that bite into the tension pad when pressed against the metal strip. The frictional resistance between the tension pad and the base becomes larger than the frictional resistance between the tension pad and the metal strip, and the movement in the moving direction of the metal strip is blocked. Tension pad attachment structure characterized by being attached to the base.