JP2601954B2 - Automatic strip threading device and threading method on entry side of process line - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for passing a strip through a process line.

[0002]

2. Description of the Related Art In a conventional method of passing a strip on an entrance side, after mounting a coil on a payoff reel, an operator rotates the coil to a position suitable for attracting a magnetic conveyor, and performs an operation of attracting the strip to the conveyor. After the worker visually checked that the suction was performed, the operator passed the strip. In another method, it is necessary for an operator to use a cradle roll or the like to align the tip of the coil at a certain angle, and then mount the coil on a pay-off reel and adsorb the strip on a magnet conveyor to pass the strip. there were. In any of the methods, the strip passing operation on the entrance side requires the intervention of an operator, which prevents the labor saving of the process line.

[0003]

SUMMARY OF THE INVENTION The present invention has been devised in order to solve the above-mentioned problems of the prior art, and eliminates an obstacle relating to the labor saving of the inlet side strip passing work in the prior art, and eliminates the problem of the process line. The purpose is to enable labor saving.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a strip feeder on the entry side of a process line, in which a magnet conveyor for leading the end of a coil to a pinch roll, a welding machine or the like is provided immediately after a payoff reel. , A detector that detects strip suction on the magnet conveyor, and the strip is passed through after detecting that the tip has been sucked to the conveyor by the detector. The gist is an automatic strip passing device and a passing method.

[0005] In order to accomplish the above operation, it is essentially essential to detect the suction of the leading end of the strip to the magnet conveyor. In other words, when the coil is attracted to the magnet conveyor while rotating, the tip of the strip cannot be detected if the adverse effect such as insufficient adhesion is transmitted due to the rotation, or the strip is damaged due to excessive rotation. A series of automatic work is possible without it.

[0006]

FIG. 1 shows an automatic strip passing apparatus on the entry side of a process line according to the present invention. In the process line mounted on the payoff reel 2 by the coil car 1, the coil 3 serving as a material is rotated, and the leading end detecting device 4 detects the leading end of the strip.

FIG. 2 shows an embodiment of the tip detecting device.
In the present embodiment, the structure is such that a step corresponding to the thickness of the strip on the outer periphery of the coil is detected by magnetic means such as the eddy current sensor 8 and recognized as the end of the strip. Of course, the tip of the strip can be recognized by a method such as a stylus type or a roll contact type.

In the process of supplying the coil to the line, if the position (angle) of the tip of the coil can always be set so as to be within a certain range, the tip detecting device as shown in FIG. There is no need to work with.

[0009] In FIG. 1, the coil 3 detected strip tip 6 further rotated, stops rotating at the position suitable for the strips adsorption of the magnet conveyor 5 which had been previously lowered. Then, by energizing the magnet, it was stripped adsorption. The strip suction may be performed during the rotation of the coil 3 or at the same time as the rotation of the coil 3 is stopped.

FIG. 3 shows an embodiment in which the suction detector 9 is installed on the magnet conveyor 5. In this embodiment, an appropriate hole is made in the conveyor belt 10, and when the strip is sucked, the light emitted from the inside of the conveyor is shown. Has a structure for detecting adsorption by utilizing the fact that the light is reflected by the strip. It is also an effective method to dispose a limit switch or the like to detect suction by mechanical contact.

[0011] The conveyor belt is necessary Although there is no easy dirt Ri by the oil and iron powder or the like attached to the strip holes in the belt if it is transparent, because the transmittance is reduced, in a very effective way Absent. Also, as described above, the hole made in the conveyor belt always stops at the position of the detector 9.
It is necessary to make a hole at another position to detect the stop position of the conveyor belt, and to install a mark for detecting the stop position by a protrusion or the like inside the conveyor.

If the conveyor is divided into two or more sections and the detector 9 is arranged between them, it is considered that the same effect as that of the embodiment of FIG. 3 can be obtained. In this case, it is troublesome to adjust the meandering of the conveyor belt. Is disadvantageous in terms of maintenance such as doubling. On the other hand, in addition to the above-described light, radiation such as X-rays or electromagnetic waves may be considered as a method of detecting adsorption of the detector 9.
The former has a drawback in handling because of the need for shielding, and the latter has drawbacks such as difficulty in detection due to the influence of the magnetic force of the magnet that attracts the strip.

In FIG. 1, after it is detected that the strip has been attracted to the magnet conveyor, the coil 3 is rotated and the magnet conveyor 5 is also rotated so that the end 6 of the strip is directed to the pinch roll 7 and the welding machine in the same manner as in a normal operation. I will lead you.

In this embodiment, the case of one payoff reel is shown, but when there are a plurality of payoff reels, it is needless to say that it is desirable to arrange the above-mentioned tip detectors and suction detectors according to the number. That is. Further, the present invention is not limited to the steel strip process line shown in the embodiment, but can be applied to all the inlet side of the process line using the magnet conveyor.

[0015]

According to the present invention, the use of the automatic incoming strip passing apparatus and the passing method according to the present invention eliminates the need for the intervention of an operator when performing the incoming side passing work of the process line, thereby further saving labor. It became possible.

[Brief description of the drawings]

FIG. 1 shows an example of an apparatus for automatically passing a process line on the entry side according to the present invention.

FIG. 2 is a detailed view of a tip detector according to the present invention.

FIG. 3 shows an example of a device for detecting attraction to a magnet conveyor according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coil car 2 Payoff reel 3 Coil 4 Tip detector 5 Magnet conveyor 6 Strip tip 7 Pinch roll 8 Eddy current sensor 9 Detector 10 Conveyor belt

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshikazu Kitayama 46-59 Ohara Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka Nippon Steel Corporation Machinery & Plant Business Department (56) References JP-A-62-167193 ( JP, A) JP-A-3-151110 (JP, A) JP-A-1-109313 (JP, U)

Claims (2)

(57) [Claims] In a strip feeding apparatus on an inlet side of a process line, a magnet conveyor for guiding the end of a coil to a pinch roll, a welding machine or the like is disposed immediately after a payoff reel, and a detection for detecting the attraction of a strip to the magnet conveyor. An automatic strip passing device on the entry side of a process line, wherein a strip is passed after detecting that the leading end has been sucked. 2. A method according to claim 1, wherein the strip is attracted to a magnet conveyor disposed immediately after a pay-off reel to guide a tip of the coil to a pinch roll, a welding machine, or the like. An automatic strip passing method for a process line, comprising: passing a strip after detecting that the leading end is sucked by a detector for detecting suction of the provided strip.