JPH05313U - Fluid drive for running shears - Google Patents

Abstract

(57) [Summary] [Structure] In a running shearing machine for cutting rolled steel plates as needed, a frame 1 for supporting the upper and lower drums 3, 4, upper and lower drums 3, 4 and upper and lower blades mounted in the longitudinal direction of the drums. 5, 6, a rotary bearing 2, a drive gear 7 and a driven gear 8,
By rotating the fluid drive motor 9, the upper and lower drums 3 and 4 rotate and the steel plate is cut. By changing the drive motor for rotating the blade from the electric type to the fluid type, the size can be reduced and the value of GD ² can be reduced. [Effect] Compared with the electric drive motor, by using a fluid drive motor that is smaller in size, it is possible to reduce the value of GD ² and save the drive motor device space.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention is a mechanism and control method of a running shearing machine in which the driving system of the drum is fluid driven. Regarding

[0002]

[Prior art]

Japanese Patent Laid-Open No. 58-109218 discloses a method of rapidly rotating a drum according to the rolling speed of a plate in a running shearing machine. It has both AC and DC drive motors and rotates the AC drive motor first, but with the flywheel, the clutch is disengaged so that rotational energy is not transmitted. Next, the clutch is engaged, and at the same time, the DC motor is started to rapidly accelerate the rotation of the drum. When the acceleration is completed, the clutch is turned off to save the energy of GD ² due to the rotation of the AC motor, thereby preventing the energy from being wasted. In addition, there is JP-A-58-171213.

[0003]

[Problems to be solved by the device]

In the prior art, an electric drive motor was used as a drive system in a drum that rapidly accelerates in accordance with the rolling speed of a plate. Further, due to technological advances, higher rolling speeds are required, and along with this, the running shears tend to be large, and large electric drive motors are required. However, when the diameter of the drum is increased due to these circumstances, the shape of the electric drive motor is also increased accordingly, and there is a problem that GD ² , that is, inertia is increased.

The object of the present invention is to reduce the value of GD ² by reducing the space of the device and to improve the synchronism of the two pairs of drums by using a fluid drive motor having a smaller shape than the prior art. Also, unlike the prior art, the fluid driven cylinder is used to rotate the drum instead of the electric driven motor.

[0005]

[Means for Solving the Problems]

  The feature of the present invention is that the drive device of the drum is a fluid drive system, and It also measures the rotation speed and is equipped with a control mechanism.

[0006]

[Action]

At present, the fluid drive system can obtain a larger output and the device space can be reduced when the size is the same as that of the electric drive system. As a result, it becomes possible to reduce the value of GD ² , and thus the performance is superior to that of the electric drive method even in a sudden acceleration / deceleration operation.

[0007]

【Example】

  Embodiments of the present invention will be described below with reference to the drawings.

[0008]   FIG. 1 shows the characteristics of the present invention best shown in FIG. 1 is a sectional view, and FIG. 3 is a general pressure chart having a running shear consisting of a plurality of continuous rolling mills. It is a block diagram of an extension facility.

[0009]   In FIGS. 1, 2 and 3, the winding for sending the steel sheet to the rolling mill 20 for rolling the steel sheet Feeding device 21, upper and lower drums 3, 4, frame 1 supporting the upper and lower drums 3, 4 1, rolling In the rolling equipment consisting of the winding device 22 for winding the rolled steel plate, the length of the drum Rotation bearings 2, drums 3, 4 of upper and lower blades 5, 6, drums 3, 4 mounted in the hand direction Drive gear 7 that connects the two, and driven gear 8 and fluid drive that rotates the drive gear 7. There is a servo valve 10 for adjusting the amount of working fluid to the motor 9 and the fluid drive motor 9. Service The working fluid is supplied to the turbo valve 10 by a tank 16, a pump 15, and an accumulator. It is composed of 14.

[0010]   In FIG. 3, the working fluid stored in the tank 16 is servo-controlled by the pump 15. It is sent to the valve 10. At this time, a certain amount of working fluid is stored in the accumulator. It is stored in 14. The working fluid from the servo valve 10 is sent to the fluid drive motor 9. It will be rotated. The drive gear 7 rotates by a series of these operations, The driven gear 8 also rotates. The rotation of these two meshed gears causes The drums 3 and 4 mounted on the same axis also rotate and pass between the blades of the lower blade 5 and the upper blade 6, respectively. The rolled steel sheet is cut.

The running shears rotate the fluid drive motor 9 to rotate the driving side and driven side drums 3 and 4 which are paired, and cut the rolled steel sheet. Since the fluid drive motor 9 has a smaller GD ² than the electric drive motor, abrupt acceleration / deceleration operation of the drums 3 and 4 is possible.

[0012]   As shown in FIG. 4, a rotation speed measuring device 11 is provided on the driven shaft side to measure the rotation speed. And send the data to the control panel 12. Also, connect the servo valve 10 to the control panel 12 as well. According to, the data is processed in the control panel 12 and the passing speed of the rolled steel plate is The optimum drum rotation speed.

[0013]   As shown in FIGS. 5, 6 and 7, the rack 18 is engaged between the gears 7 and 8 The reciprocating motion of the drive cylinder 17 causes the drums 3 and 4 to rotate. Upper and lower blades 5, 6 Each has a slanted shape with an angle in the direction of the rotation axis. The cylinder 17 In this case, the movement is to cut the steel plate, and there should be only a small gap between the blades. To do. When the cylinder is in the backward movement, each system installed in the axial direction of the upper and lower drums. By opening and closing the Linda 19 respectively and shifting the drum in the opposite direction, Even if the gap between the objects is increased and the drums 3 and 4 rotate in the reverse direction, the steel plate is moved to the upper and lower blades 5 and 6. Can be prevented from being hurt by.

[0014]

[Effect of device]

  The present invention has the following effects.

(1) The value of GD ² can be reduced by using a fluid drive motor that is smaller than an electric drive motor.

[0016] (2) Run-by-shear shearing by changing the number of drive motors from two to one and controlling them with the control panel   The responsiveness of the machine can be improved.

[0017] (3) Equipment space can be reduced by changing the number of drive motors from two to one.   It

(4) By driving not the drive motor but the fluid cylinder, GD ² of the drive device can be made null.

[Brief description of drawings]

FIG. 1 is a system diagram of an embodiment to which a fluid drive motor of the present invention is applied.

FIG. 2 is a sectional view of FIG.

FIG. 3 is an explanatory view of a general rolling facility including a plurality of continuous rolling mills.

FIG. 4 is an explanatory diagram of an application example in which the device for controlling the rotation speed of FIG. 1 is attached.

FIG. 5 is a system diagram of an embodiment to which the fluid drive cylinder of the present invention is applied.

6 is a system diagram showing details of a drive system in the side view of FIG.

FIG. 7 is an explanatory view showing the shape of the blade of FIG.

[Explanation of symbols]

1 ... frame, 3,4 ... drum, 5 ... lower blade, 6 ... upper blade,
9 ... Fluid drive motor, 10 ... Servo valve, 12 ... Control panel,
17 ... Fluid driven cylinder.

Claims (3)

[Scope of utility model registration request] 1. A rotary shearing machine installed on the outlet side of a continuous rolling mill comprising a plurality of continuous rolling mills, two pairs of drums, and upper and lower blades attached to the drums and the drums for simultaneously rotating the drums. In a running shear machine having two pairs of gears attached to the end of the rotating shaft of the gear train and meshing gear trains, and one of which has a drive device, the drive device for the drum is a fluid drive motor. A fluid drive device for a running shears. 2. The drum according to claim 1, wherein the drive shaft side having the drive motor is connected to a control panel, and the driven shaft side is provided with a rotation speed measuring device, and is connected to the same control panel as the former. A fluid drive for a running shears provided with means for controlling the rotational speed. 3. A pair of drums of a running shears, upper and lower blades attached to the drums, and spur gears attached to the ends of the rotating shafts of the drums, respectively, and a rack is meshed between the spur gears. No, in a running shear machine equipped with a drive device for the rack to rotate a drum, the drive device for the rack was a fluid drive cylinder, and the tilting and drum axis direction moving mechanism was provided on the upper and lower blades attached to the drum. A fluid drive device for a running shears characterized by the above.