JP2595049B2 - Abnormality detection device for sizing press machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sizing press for reducing the width of a hot slab, and more particularly to an abnormality detection device for detecting an abnormality of various components of the sizing press.

[Conventional technology]

For example, as described in "Normal Diagnosis of Rolling Bearings" in NSK Technical Journal No. 647 (NSK Technical Journal No.647), equipment failure diagnosis is mainly performed for bearings, gears, and rotating machines. Have been applied. In such an abnormality diagnosis, sensors such as a vibrometer and a position detecting device are arranged at appropriate positions, and an abnormality is detected based on the content of a signal from the sensor itself, or the life is predicted. Conventionally, a sizing press for reducing the width of a hot slab is not provided with an abnormality detection device.

[Problems to be solved by the invention]

In the sizing press device, for example, when the support wheel supporting the inner block for the width adjustment device is broken,
Since the inner block is supported by the width adjusting screw, it can be used even if it is inclined. If the use is continued as it is, an excessive force is applied, and the screw, the nut engaged with the screw and the universal joint are also damaged, leading to a serious accident. For this reason, the production equipment downstream of the sizing press must be stopped.

SUMMARY OF THE INVENTION An object of the present invention is to provide an abnormality detection device for preventive maintenance that minimizes a breakdown stop of a sizing press device.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a detecting device for detecting a load state and a movement of various parts of a sizing press device, an arithmetic device for inputting and calculating a signal from the detecting device, and an arithmetic operation in the arithmetic device. An abnormality detection device for a sizing press device including a determination device for determining a result is provided.

[Action]

In the present invention, the load state and movement of the various parts of the sizing press device are detected by measuring a force acting on a support wheel of a block or a screw and a torque acting on a universal joint, for example,
The detected signal is calculated using a correlation equation obtained in advance, and the calculation result is compared with a value obtained in a normal operation state. When the calculated result exceeds a predetermined allowable value, an abnormal signal is output.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

1 and 2, the sizing press has an inner block 3 for a width adjusting device.
Is reciprocated in a direction perpendicular to the slab conveyance direction while being supported by the support wheels 4. A pair of molds 2 fixed to the inner block 3 and having a taper are provided on both sides of the slab material 1. Press the part to reduce the width. The inner block 3 rotatably connects four screws 8 for width adjustment. These screws 8 are screw-engaged with nuts 9 fixed to the outer block 6, and are connected to the universal joint 10 and the distribution joint. Driven and rotated by a width adjusting screw drive motor 11 via a gear 13. Thus, the screw 8 incorporated in the outer block 6 is driven and rotated by the motor 11, and the position of the inner block 3 is adjusted to adjust the difference in plate width. The outer block 6 is driven by a motor 12 via a crank mechanism 7 to reciprocate, whereby the slab material 1 is reduced in width. Similarly to the inner block 3, the outer block 6 is reciprocated in a direction perpendicular to the slab conveyance direction while being supported by the support wheels 5.

An abnormality detection device according to an embodiment of the present invention is applied to the sizing press device. The abnormality detecting device is mounted on at least a part of each of the support wheels 4 and 5 of the inner block 3 and the outer block 6 to measure a load on a wheel, and the screw 8
A load cell 15 attached to the end of the nut or the bottom of the nut 9 to detect the load state of the pressing force, a torque gauge 16 attached to the shaft of the universal joint 10 to monitor the movement of the screw 8, An arithmetic circuit 17 for inputting a signal from the torque gauge and performing arithmetic operation, a determination circuit 18 for determining an arithmetic result in the arithmetic circuit, and an alarm device 19 are included.

In normal width reduction work of sizing press machine,
For example, the correlations shown in FIG. 3 include the pressing force Fpi and the torque Ti applied to the four screws 8, the load Fwi applied to the respective support wheels 4 and 5 of the inner block 3 and the outer block 6, the crank position α and It exists between the width reduction amounts ΔW. Therefore, always measure these forces and torques,
The correlation between them is calculated, and if the calculation result deviates from the specific correlation, an abnormality has occurred in the wheels, the screw, the universal joint, the bearing for the distribution gear, and the like. That is, as shown in FIG. 3, the forces and torques are constantly measured, and a correlation equation is obtained in advance from the measured values. The arithmetic circuit 17 uses the correlation equation obtained in advance in this way, and the calculation result is compared with the value obtained in the normal operation state in the determination circuit 18. The judgment is made and the alarm device 19 issues an abnormal signal. As a signal used for obtaining the correlation equation, a motor current, a buckling prevention press roll load, and the like may be used.

In this way, the machine operator can detect a failure before an accident occurs, and appropriate maintenance can be performed.
Even if damage occurs to a bearing or the like, the damage can be prevented from spreading by detecting the damage. Also,
It is also possible to specify a failure of a wheel, a screw, a universal joint, a bearing for a distribution gear, or the like from each relationship.

[Effects of the Invention] According to the present invention, a failure of a main part of a sizing press device can be detected in advance, and an accident can be prevented. Further, if any part is damaged, it is possible to prevent the damage from spreading.

[Brief description of the drawings]

FIG. 1 is a perspective view of a sizing press device provided with an abnormality detection device according to an embodiment of the present invention, and FIG. 2 is a diagram illustrating the operation and functions of the sizing press device.
FIG. 3 is a diagram showing the correlation between the difference in the pressing force carried by the entry / exit screw and the difference in the load carried by the entry / exit inner block wheels. 1 ... Slab material, 2 ... Press die, 3 ... Inner block, 4,5 ... Support wheel, 6 ... Outer block, 7 ... Crank mechanism, 8 ... Screw, 9 ... Nut, 10 …… Universal joint, 11,12 …… Motor, 13 …… Distribution gear, 14,15 …… Load cell, 16 …… Torque gauge, 17
…… Operation circuit, 18 …… Judgment circuit, 19 …… Alarm device.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hideyuki Nikaido 1-chome, Mizushima-Kawasaki-dori, Kurashiki-shi, Okayama Pref. JP-A-62-187535 (JP, A) JP-A-55-70729 (JP, A) JP-A-59-13542 (JP, A) JP-A-62-212048 (JP, A) JP-A-63-187 97326 (JP, A)

Claims (5)

(57) [Claims] 1. A sizing press device for adjusting the position of a press tool disposed opposite to a widthwise side of a rolled slab by a screw and reciprocating the press tool by a crank mechanism to reduce the width of the slab. An abnormality detection device that detects, a detection device that detects a load state and a movement of various components of the sizing press device, an arithmetic device that inputs and calculates a signal from the detection device,
An abnormality detection device for a sizing press device, comprising: a determination device that determines a calculation result in the calculation device. 2. The abnormality detection device according to claim 1, further comprising an alarm device that issues an abnormality signal when the calculation result exceeds a predetermined allowable value. 3. The abnormality detection apparatus according to claim 1, wherein said arithmetic unit performs an arithmetic operation using a correlation equation obtained in advance between said load state and movement. 4. The abnormality detection device according to claim 2, wherein said determination device compares said calculation result with a value obtained in a normal operation state. 5. The measuring device for measuring a load applied to a support device of a block on which a press tool of the sizing press device is mounted, a measuring device for measuring a load and a movement of the screw, and a universal joint. 5. A method according to claim 1, further comprising measuring means for measuring the applied load.
The abnormality detection device according to any one of the above items.