JPH0534809Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an apparatus for automatically introducing the tip of a foil material from an unwinding coil into a rolling mill for rolling a metal foil material such as aluminum or copper.

(Prior Art) FIG. 6 shows an example of a device for passing a metal foil material to a rolling mill according to the prior art which is in practical use. A leader belt d having a certain degree of rigidity is unwound from a rotating leader belt drum b via a belt guide c onto a pass line p of work rolls a of a rolling mill, and unwound from a lower unwinding coil e. Overlap the metal foil f at the positions of the deflector roller g and the pinch roller h, and use the air suction action of the honeycomb-shaped leader belt d, or fold the metal foil f onto the leader belt d to tighten the tip of the metal foil f. is held, and using the strength of the leader belt d, a soft foil material f is passed over the bridle roller i and the guide j between the work rolls a and a.

FIG. 7 shows another example of the prior art, in which a lower guide k of the metal foil f is used to float the metal foil f by air blowing to pass the metal foil through the plate.

FIG. 8 shows still another example of the prior art, in which a telescoping air suction duct l is used and a metal foil material f is used.
The material is threaded by adsorbing the tip of the material.

(Problems to be Solved by the Invention) In the conventional technique shown in FIG. 6, if the metal foil material f is to be cut after threading, it is necessary to repeat the same threading operation from the beginning. Also, while the metal foil material f is guided between the work rolls a and a, the leader belt d
Since the metal foil material f is slid over the metal foil material f and moved backward, the metal foil material f is easily cut.

The conventional technique shown in FIG. 7 has difficulty in setting the conditions, and air blowing can only be used as an aid, requiring manual intervention.

The prior art shown in FIG. 8 is similar to the one shown in FIG.
When cutting the metal foil material f, it is necessary to repeat the same threading operation from the beginning, and this method is not suitable for metal foil materials that are extremely easy to break.

In recent years, as rolling mills have become larger and faster, automating sheet threading has become increasingly necessary to improve work efficiency and productivity. The method using air blow as described above is not suitable for this purpose. Furthermore, considering that a special feature of metal foil material is that it is easy to cut, it is complicated and unsuitable for the purpose of having to repeat the threading operation from the beginning when cutting the metal foil material.

The present invention solves the above problems of the prior art,
Metal foil material can be threaded automatically and efficiently, and in particular when cutting metal foil material, threading can be performed continuously, and during that time the work roll and unwinding coil can be threaded. It is an object of the present invention to provide an automatic sheet threading device that can complete sheet threading without breaking foil by adjusting speed differences and the like.

(Means for Solving the Problems) The object of the present invention is to provide a guide device that adsorbs the tip of the metal foil material from the unwinding coil and guides it between the work rolls on the pass line. By providing a foil pinch roller which is compressed by a built-in spring or the like, and by providing a device for driving and holding the metal foil between the foil pinch roller and a lower bridle roller, an automatic sheet threading device is constructed. achieved.

In other words, the automatic threading device for metal foil of the present invention has an overall configuration in which the metal foil is guided between the work rolls of a rolling mill and rolled, so the tip of the metal foil from the unwinding coil is held by suction. A foil pinch roller is provided in the guide device that guides the work rolls forward on the pass line toward between the work rolls, and a bridle roller is disposed below the pass line. The foil pinch roller faces the bridle roller, pinches the tip of the metal foil between both rollers, and introduces the tip of the metal foil between the work rolls by driving at least one of both rollers. It is characterized by

(Function) According to the automatic threading device of the present invention, after adsorbing the tip of the metal foil material of the unwinding coil, the tip of the metal foil material is automatically guided between the work rolls, and the metal foil material is rolled by the work rolls. Even if the metal foil material is cut due to tension caused by the speed difference between it and the unwinding coil, the metal foil material is pinched and driven by the foil pinch roller and the bridle roller, and is continuously threaded. By adjusting the speed difference of the return coil, threading can be completed without any foil breakage.

(Example) Hereinafter, the automatic threading device for metal foil materials of the present invention will be specifically explained based on examples with reference to FIGS. 1 to 5. Figure 1 is a side view of the entire device, Figure 2 is a vertical cross-sectional side view of the tip of the threading nose, Figure 3 is a partial vertical side view of the bridle roller and threading guide, and Figure 4 is a foil material pinch. A partial longitudinal sectional front view of the roller and the bridle roller, and FIG. 5 shows a longitudinal sectional front view of a portion of the foil pinch roller.

Various rolling mills are used as rolling mills for metal foil materials, but in Fig. 1, the upper work roll 1
A four-high rolling mill in which a lower work roll 2 is supported behind by an upper back up roll 3 and a lower back up roll 4 is illustrated. Work roll 1,
A pass line p of the metal foil material 5 passes between the two.

In order to guide and pass the tip of the metal foil material 5 unwound from the unwinding coil 6 between the work rolls 1 and 2,
A guide device is provided above it. This guide device includes a guide rail 7 provided parallel to a pass line p, a buggy 8 suspended by wheels 9, and a drive motor 10
The buggy 8 is provided with a threading nose 12 which is raised and lowered by a cylinder 11 at the bottom. The threading nose 12 has an opening of a wire mesh portion 13 at its tip as shown in FIG. At the retreating standby position of the buggy 8, the tip of the threading nose 12 is lowered onto the unwinding coil 6 by the cylinder 11, and at the same time, the duct inside the threading nose 12 is made to have negative pressure by the suction blower. As a result, the tip of the metal foil material 5 of the unwinding coil 6 is connected to the wire mesh portion 13 at the tip of the threading nose 12.
It is retained by adsorption.

Next, the threading nose 12 is raised to the height of the pass line p by the cylinder 11 as shown by the solid line in FIG. 5 is guided toward between the work rolls 1 and 2.

Below the pass line p of the work rolls 1 and 2, a bridle roller 14 and a threading guide 15 with an air blow function are provided, details of which are shown in FIGS. 3 and 4. The threading nose 12 of the upper advancing guide device is provided with a foil pinch roller 16 having a rubber lining, the details of which are shown in FIG. As shown in FIG. 3, the buggy 8 can move forward to a position where the foil pinch roller 16 provided on the sheet passing nose 12 and the bridle roller 14 face each other.

For the bridle roller 14, the cylinder 17
A rubber-lined drive roller 19 driven by a drive motor 18 is pressed from below. On the other hand, as shown in FIG. 5, the foil pinch roller 16 is pressed downward by a spring 20 built into the threading nose 12.

According to the automatic threading device for metal foil material of the present invention having the above configuration, when the tip of the metal foil material 5 from the unwinding coil 6 is sucked and held at the tip of the threading nose 12 and the guide device starts moving forward. , the air blow of the sheet passing guide 15 and the lifting and driving of the drive roller 19 of the bridle roller 14 are performed by the cylinder 17, respectively.
and drive motor 18. The guide device includes a foil pinch roller 16 and a bridle roller 14.
When the foil material 5 is moved forward to a position where the two rollers face each other, the foil material 5 sandwiched between the two rollers is continuously introduced between the work rolls 1 and 2 by the driving of both rollers.

As a result, even if the metal foil material 5 is cut between the bridle roller 14 and the work rolls 1 and 2,
Regardless, the foil material can be introduced between the work rolls 1 and 2 one after another.

After the threading is completed and the optimal tension is set, the threading nose 12 is moved to the standby position by driving the buggy 8 in reverse.

As above, the present invention has been explained in detail using a preferred embodiment, but modified embodiments include changing the rotary lifting type threading nose to a vertical lifting type, and changing the drive of the bridle roller to the drive from the foil pinch roller side. It can also be easily modified and implemented.

(Effect of the invention) As described above, even if the metal foil material is threaded and rolled by the work roll and cut due to the tension caused by the speed difference between the unwinding coil and the unwinding coil, there is no need to repeat the threading operation from the beginning. It is possible to continuously and automatically thread the metal foil material held between the material pinch roller and the bridle roller, and by adjusting the speed difference between the work roll and the unwinding coil in the meantime. It is possible to obtain an automatic sheet threading device that can complete sheet threading without breaking the foil and is compatible with larger rolling mills and higher speeds.

[Brief explanation of the drawing]

Figure 1 shows one of the automatic threading devices for metal foil materials of the present invention.
A side layout view of the entire device of the embodiment, FIG. 2 is a vertical cross-sectional side view of the tip of the threading nose, FIG. 3 is a partial longitudinal side view of the bridle roller and the threading guide, and FIG. 4 is a foil pinch roller. , FIG. 5 is a partial longitudinal sectional front view of the bridal roller, FIG. 5 is a vertical sectional front view of the foil pinch roller, and FIG. 6 is a conventional sheet threading device.
FIG. 7 is a schematic side view of another example of the prior art, and FIG. 8 is a schematic side view of still another example of the prior art. 1... Upper work roll, 2... Lower work roll, 3... Upper back up roll, 4... Lower back up roll, 5... Metal foil material, 6... Unwinding coil, 7... Guide rail, 8...Buggy, 9...
... Wheel, 10 ... Drive motor, 11 ... Cylinder, 12 ... Threading nose, 13 ... Wire mesh part, 14
...Bridle roller, 15 ...Threading guide, 1
6...Foil material pinch roller, 17...Cylinder, 1
8... Drive motor, 19... Drive roller, 20...
...Spring, p...Pass line, a...Work roll, b...Leader belt drum, c...Belt guide, d...Leader belt, e...Rewinding coil,
f...Metal foil material, g...Deflector roller, h
...Pinch roller, i...Bridle roller, j
...Guide, k...Lower guide, l...Air suction duct.

Claims (1)

[Scope of utility model registration request] In order to guide the metal foil material between the work rolls of a rolling mill and roll it, the foil material is attached to a guide device that adsorbs and holds the tip of the metal foil material from the unwinding coil and guides it forward on the pass line between the work rolls. A pinch roller is provided, a bridle roller is arranged below the pass line, and the guide device can advance to a position where the foil material pinch roller and the bridle roller face each other,
A metal foil characterized in that a foil pinch roller faces a bridle roller and pinches the tip of the metal foil between both rollers, and the tip of the metal foil is introduced between the work rolls by driving at least one of both rollers. Automatic threading device for lumber.