JPH0618644Y2 - Hot-rolled steel sheet manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an apparatus for manufacturing a steel plate cutting plate from a hot rolled steel strip coil.

(Prior Art) When manufacturing a steel sheet cutting plate from a hot-rolled steel strip coil, it is desirable to remove the scale that easily peels off in order to increase the commercial value, and therefore brushing with a brush roll is generally performed. Has been. In this case, it is desirable that the brushing treatment is normally performed continuously in the state of a steel strip because the scale can be stably removed.

(Problems to be solved by the invention) However, in the case of the above method, after the brushing treatment, it is passed through a plate-shaped shearing device for steel strips, a shape correcting device for steel plate cutting plates, etc. Given,
Scale firmly attached to the surface of the steel plate floats on the surface,
It is difficult to obtain the desired steel sheet with a highly clean surface.

This invention solves the above problems and obtains a steel plate with high surface cleanliness, and at the same time, provides an apparatus for manufacturing a hot-rolled steel sheet cutting plate capable of uniformly removing the scale of the steel sheet cutting plate and stably passing the scale removing device. It is intended to be provided.

(Means for Solving the Problems) The present invention relates to a hot-rolled steel coil coil rewinding device, a steel strip shape defective portion cutting device, a hot-rolled steel strip shape correcting device, a steel strip ear cutting device, and a steel strip cutting device. A plate-shaped shearing device, a steel plate cutting plate shape correcting device, and a steel plate cutting plate scale removing device equipped with a pinch roll on the entrance side are sequentially arranged in series, and the steel plate cutting plate shape correcting device and the entrance side pinch are arranged. A plate warp detector that detects when a cut plate with a warp of a set value or more arrives between the roll and the roll warp detector is provided with the detection signal of the plate warp detector. In addition to opening the removal device, a plate detector is installed between the plate warp detector and the entrance side pinch roll to detect when the tip of the cutting plate reaches, and the plate warp detector detects The above-mentioned plate detector of the cutting plate that did not send a signal An apparatus for manufacturing a hot-rolled steel sheet cutting plate, which is configured to hold the inlet / outlet side pinch roll and the scale removing device in a scale removing operation state by a detection signal.

(Operation) As described above, in the present invention, the scale removing device is a plate-shaped shearing device for steel strips that may generate floating scales.
After the shape correcting device for the steel plate cutting plate, that is, by arranging it at the last part of the line, it is possible to manufacture a steel plate cutting plate with a high degree of cleanliness, and also to remove the scale at the steel plate cutting plate stage. This is a solution to the problems of uniform removability and plateability of the scale removing device.

(Embodiment) FIG. 1 is an overall process diagram of the present invention.

From the left in the figure, 1 and 2 are rewinding devices for hot rolled steel strip coils, 3
Is a hot-rolled steel strip T and B cutting device, 4 is a hot-rolled steel strip shape correcting device, 5 is a steel strip ear cutting device, 6 is a steel strip plate shearing device, 7 is a cutting plate shape correcting device, Reference numeral 8 denotes a scale removing device for a steel plate cutting plate, which is composed of a pair of upper and lower brush rolls. Reference numerals 9 and 10 denote a pair of pinch rolls provided on the inlet and outlet sides of the scale removing device 8, and 11 and 12 denote a plate warp detector and a plate detector provided on the inlet side of the input side pinch roll 9.

The plate warp detector 11 is, for example, a contact type, and the plate detector 12 is, for example, an optical type.

As shown in FIG. 2, the scale removing device 8 is provided with a protector 13 for equipment protection, and the scale removing device 8 is provided with a collecting device 14.

The plate warp detector 11 detects when a cutting plate having a warp of a set value or more has arrived, and the signal indicates the scale removing device 8, the entrance / exit side pinch roll 9, and the upper roll 10 as shown in FIG. 3A. Evacuate upward to effectively prevent damage to the above equipment.

On the other hand, the plate detector 12 detects when the front end of the cutting plate has arrived, and the plate warp detector 11 does not transmit a detection signal to the front end of the cutting plate (the warp whose warp is below the set value). As shown in FIG. 3B, the upper roll of the scale removing device 8 is lowered by the detection signal to bring it into a preloaded state, and when the tip of the cutting plate passes through the entry side pinch roll 9, it is rolled down and its lower drive roll is applied. Thus, the cutting plate is sent to the scale removing device 8 in the preloaded state, and the scale is surely removed from the tip of the cutting plate.

Furthermore, when the tip of the cutting plate passes the exit side pinch roll 10,
As shown in FIG. 3C, a reduction is applied, and the lower drive roll passes the plate.

The flow of this situation is shown in FIG.

FIG. 5 shows the control of the reduction amount in the scale removing device 8. The cutting plate is fed from the entrance side pinch roll 9 and the tip reaches the brush rolls 8-1 and 8-2, and at the same time, the brush roll 8 is pressed. In order to keep the motor currents of -1, 8-2 constant, the amount of reduction of the brush rolls 8-1, 8-2 is automatically controlled by the reduction adjusting device 15 according to the shape in the longitudinal direction of the cutting plate, and It is desirable to configure the rolls 8-1 and 8-2 to move.

With this configuration, it is possible to obtain an effect that the scales on the front and back surfaces can be removed more uniformly over the entire length of the cutting plate.

The configuration of the embodiment of the present invention is as described above, and the hot-rolled steel strip coil H is rewound from the rewinding devices 1 and 2. The hot-rolled steel strip H whose tip is cut by the cutting device 3 is straightened by the hot-rolled steel strip shape straightening device 4, trimmed to a predetermined width by the next ear cutting device 5, and then the plate-shaped shearing device. At 6, it is sheared into a cut plate of a predetermined length.

The shape of this cut plate is corrected by the final shape correction device 7, and the peeling scale originally generated in the hot rolled steel strip coil H by the operation shown in FIGS. The peelable scale generated in Step 2 is the scale removing device 8
Are removed all at once by the method described above, and the product 16 of the steel plate cutting plate is obtained.

The embodiment of the present invention is based on the above, and has the following operational effects.

(1) The scale removing device is positioned after the plate-shaped shearing device for steel strips that may generate floating scales, the shape correcting device for steel plate cutting plate, etc., that is, at the end of the line. It is possible to manufacture a product having an excellent degree of cleanliness.

(2) A plate warp detector is installed on the inlet side of the scale removing device to detect when a warped plate with a warp of a set value or more arrives, and the signal is sent to the scale removing device and the upper roll of the pinch roll on the inlet and outlet sides. By retracting the above, damage to each of the above facilities can be effectively prevented.

(3) A plate detector is provided on the inlet side of the scale removing device to detect the tip of the cutting plate, and the signal is used to lower the upper roll of the scale removing device to bring it into a pre-pressurized state. When passing through the side pinch rolls, a reduction is applied and the lower drive roll sends the cutting plate to the scale removing device in the pre-loaded state, so that the scale can be reliably removed from the front end to the rear end of the cutting plate. It is a thing.

(Effects of the Invention) According to the present invention, a steel strip without a peelable scale can be obtained from a hot rolled steel strip coil under stable threading, which is a great contribution to the production of the steel strip. is there.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is an overall explanatory view, Fig. 2 is a detailed explanatory view of a scale removing device portion, and Fig. 3ABC is an explanation of the passing condition of the scale removing device portion. FIG. 4 and FIG. 4 are flow charts of the passing condition, and FIG. 5 is an explanatory diagram of the reduction amount control in the scale removing device. 1, 2 ...... Unwinding device for hot rolled steel strip coil 5 …… Cutting device for ears, 6 …… Plate shearing device 7 …… Shape straightening device 8 …… Scale removing device 9, 10 …… Pinch roll 11… … Sheet warp detector, 12 …… Sheet detector

Claims (1)

[Scope of utility model registration request] 1. A hot-rolled steel strip coil rewinding device, a steel strip shape defective portion cutting device, a hot-rolled steel strip shape correcting device, a steel strip ear cutting device, a steel strip plate shearing device, and a steel plate cutting device. A plate shape correcting device, a scale removing device for a steel plate cutting plate equipped with a pinch roll on the entrance and exit sides are sequentially arranged in series, and set between the shape correcting device for the steel plate cutting plate and the entrance side pinch roll. Provide a plate warp detector that detects when a cutting plate with a warp of more than the value reaches, and use the detection signal of this plate warp detector to open the inlet / outlet side pinch roll and the scale removing device. , A plate detector that detects when the tip of the cutting plate reaches between the plate warp detector and the entry side pinch roll, the plate warp detector does not send a detection signal The detection signal from the plate detector of Chiroru and the descaling device hot-rolled steel sheet cut sheet manufacturing apparatus formed by as configured to hold the scale removing operation state.