JPH0735722Y2 - Strip tip cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a strip tip cutting device for removing a burr at a cut portion of a metal strip.

[Prior Art] Generally, when a metal strip is cut by cold rolling, temper rolling, recoil line or the like in an iron mill, a burr is generated at the cut portion. In the case of rolling, this burr portion is torn and becomes a roll flaw, which is transferred to the product and deteriorates the quality of the product. Alternatively, when the carrier is moved, the burr portion scratches the rubber roll or the like of the carrier facility, which makes maintenance difficult. Further, when the above product is wound in a coil shape, due to a step at the beginning of winding due to a burr, a waist break, or a waist break called a reel mark, and a flaw-like defect occur.

As a technique for removing the burr at this type of cut portion with an pickling line, Jikkou 60-35578 has been introduced. In this technology, a machine frame is erected on the upper part of the transfer device, and a carriage that moves in the strip width direction is arranged on the machine frame, and a stopper for stopping the tip of the strip, a plate holder for holding the strip, and a cutter for cutting are mounted on this carriage. This device is equipped with sander angle adjustment and sander pressing pressure adjustment.

As another technique, Sakae 56-131911 is introduced, and this technique provides a frame with lines orthogonal to each other on the upper part of the strip conveying device, and lowers the strip pedestal and the strip from this frame. Clamp the strip with the clamp bar on the bottom of the strip, move the carriage on the bottom of the strip in the width direction of the strip, and on this carriage,
This is a device for cutting the strip end face with an electric grinder provided with a chamfering width adjusting means for shifting in the longitudinal direction of the lower surface and a cutting amount adjusting means.

With the above two types of technology, the former, Jitsuko Sho 60-35578,
Whereas all the equipment is installed in a machine frame equipped with a trolley, in the latter, the actual development Sho 56-131911, the fixing means is mainly in the upper part, but the grinding means is installed in the lower part. There is a difference.

However, in any of the above techniques, the tip of the strip is stopped at a predetermined position and held, and the angle is adjusted by a sander or grinder that moves in the strip width direction, the pressing pressure adjustment, the chamfer width adjustment means, and the cut amount adjustment means. Meanwhile, the strip is ground.

[Problems to be solved by the invention] Conventionally, the sander is moved by a trolley to perform full width cutting in order to cut the burr of the cutting portion that occurs when a metal strip is cut, the angle of the sander, and the pressing pressure adjustment. Since it has to have a function, a chamfer width adjusting means, a cut amount adjusting means, and all the strips being conveyed are targeted, there is a drawback that the down time of the conveying device becomes long. Also, it is necessary to adjust the angle of the sander and the pressing pressure that affect the quality of cutting, and it is difficult to always ensure stable quality. Furthermore, in the above-mentioned technology of Jitsuho Sho 60-35578, all the cutting equipment is mounted on the trolley, so the trolley and the equipment are enlarged.

Therefore, the present invention has been made in order to solve the above-mentioned problems, and it is possible to reduce downtime of a transfer device,
It is an object of the present invention to obtain a device having a compact structure, which can always ensure stable cutting quality with a simple mechanism.

[Means for Solving the Problems] The apparatus according to the present invention is provided with two strip threading tables and descends from the upper part between the tables to position and fix the leading edge of the strip between the tables. A stopper for fixing the tip of the strip and a strip retainer that holds the strip down from the upper part on the entry side table are arranged, and it can be raised and lowered to the lower part between the tables and has a body length more than the full width of the strip. A strip tip cutting device characterized by comprising a brush.

[Operation] The present invention basically does not equip a moving device such as a conventional trolley, but the cutting of the strip tip is performed by a rotating brush, and the pressing pressure device and the angle adjustment are unnecessary, and downtime is reduced. Is also shortened.

[Embodiment of the Invention] Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1, 2 and 3.
It will be described with reference to the drawings.

As a strip tip cutting device for removing the burr at the cut portion of the metal strip 1, the strip passing table 2, 3
And a stopper 4 for vertically ascending / descending strips inserted between the tables 2 and 3 at right angles to the tables 2 and 3.
Between the table and the tables 2 and 3, a strip retainer 7 for retaining the strip 1 is provided, and a strip length equal to or larger than the full width of the strip 1 is provided at a position opposed to the strip fixing stopper 4 via the end of the strip 1. That is, the rotary brush 9 that can be raised and lowered is provided.

The strip tip fixing stopper 4 is attached to the tip of an elevating cylinder 6 attached to a frame 5 above the transfer line, and the strip holder 7 is attached.
Is also attached to the tip of an elevating cylinder 8 attached to the frame 5 above the transfer line so that it can move up and down.

The rotary brush 9 is lifted and lowered by transmitting the rotation of the servo motor 13 through a ball screw jack 11 about a lift shaft 10 that is rigidly connected and integrated by a link 12.

As described above, the transported metal strip 1 is passed through the strip passage plate table 2 and is then fed to FIG.
As shown in (B), the tip of the strip 1 is brought into contact with the stopper 4 for fixing the tip of the strip to position the strip, and the strip retainer 7 that has been raised is lowered to abut against the strip 1 to hold it. . Here, the stopper 4 for fixing the tip of the strip is lifted by the elevating cylinder 6 so as to be separated from the tip of the strip 1, and the rotating brush 9 is brought into contact with the lower edge of the tip of the strip 1 from the lower portion of the strip 1 for cutting. At this time, the pressing pressure of the rotating brush 9 and the load due to the abrasion of the brush are adjusted as follows.
It can be easily adjusted by the load current of the drive motor 14 of the rotating brush 9. Further, in order to prevent the scattering of cutting chips, the strip plate table 3 is engaged so that it can be easily raised by moving the rotating brush 9 up and down, and the cutting chips can be accommodated in the lower surface of the table 3 and the chip receiver 15. The scrap receiver 15 is open only in the rotation range part of the link 12.

Since the rotating brush 9 is for cutting the tip of a metal strip, it is a brush made of nylon or the like containing abrasive grains. As the abrasive grains, a hard metal such as alumina or carbon random, ceramics or the like is used. .

Next, a second embodiment of the present invention will be described with reference to FIGS.
It will be described with reference to the drawings.

This embodiment is a case where the apparatus of the present invention is applied to a preparatory device in a transport line equipped with one rewinding device and a rewinding preparatory device for the next processing strip in a cold rolling mill or the like.

With the coil-shaped strip 1 placed on the coil car 18, the tip of the strip 1 is opened by the tip guide 19 and the coil 20, and is guided onto the guide 19 to form the coil car 18.
Is rotated and introduced into the strip tip cutting device for cutting. During this time, since the front coil 1a is being rolled by the rewinding device 17, after the front coil 1a has finished rolling, the table 21 on standby for rising is moved from the C position to the D position by the pinch roll.
The strip 1 which has been lowered to the level of 22 and which has been subjected to the above-mentioned cutting is conveyed on the table 21 and inserted into the pinch roll 22 to enter the rolling operation. At the same time table 21
Removes it from the transport line, raises it from the D position to a predetermined position of C, and waits until the next strip is received.

In the case of this embodiment, since there are a plurality of threading lines as described above, the cutting portion of the strip tip cutting device is of a type in which the pinch roll 22 is retracted after the strip tip has been threaded. That is, the rotating brush 9 and the elevating shaft 10 are arranged on the frame 25 that is self-propelled by the wheels 23 and the cylinders 24, and the rewinding device 17 causes the cutting device to retract while the strip 1a is being rolled. Since the frame 25 is cantilevered, one end of the frame 25 is held by the clamp device 26 and then cut to prevent vibration during cutting. In the case of this embodiment, after inserting the front coil 1a into the rewinding device 17, the cutting device is advanced to complete the preparation for cutting the next strip coil.

As described above, in the first and second embodiments, the strip tip fixing stopper 4 and the clamp device 26 are lowered from the upper portion to contact the strip 1, or the rotary brush 9 is raised from the lower portion to contact the strip 1. However, this relationship may be arbitrary.

[Advantages of the Invention] As described above, according to the strip tip cutting device of the present invention, a moving device such as a carriage is not necessary for stopping, retaining and cutting the strip, and the cutting is performed by a rotating brush. Since the pressure adjustment and the angle adjustment are unnecessary, downtime is shortened and the quality after cutting is stable. Maintenance is easy because the structure is simple.

[Brief description of drawings]

FIG. 1 is a side view of the first embodiment of the present invention, which is orthogonal to a conveying device, FIG. 2 is a plan view, FIG. 3 is an explanatory view showing the operation of (A) and (B), and (A) is a strip. FIG. 4B shows a state of positioning the tip portion, FIG. 4B shows a cutting state of the strip tip portion, FIG. 4 is a side view showing a second embodiment of the present invention, and FIG. 5 is a side view orthogonal to the conveying device. Is. 1 ... strip, 2,3 ... strip passing table, 4 ...
Stoppers for fixing strip ends, 5 ... Frame, 6,8
… Lifting cylinder, 7… Strip holder, 9… Rotating brush.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography SHOKO 60-35578 (JP, Y2) SHOKO 56-25795 (JP, Y2)

Claims (1)

[Scope of utility model registration request] 1. A strip stopper table for fixing the tip of a strip which is movable up and down between the tables and which is lowered from the upper part to position and fix the leading edge of the strip between the tables. The strip tip is characterized by arranging a strip retainer that descends from the upper part to retain the strip, and is provided with a rotating brush having a body length equal to or larger than the full width of the strip at the lower part between the tables. Cutting equipment.