JPH0751924A - Cutting equipment - Google Patents

Abstract

PURPOSE:To provide cutting equipment capable of cutting a material at a high speed, which can be used in transporting the material. CONSTITUTION:A pair of shear drums 16 are rotated to shear a material 17 passed between the drums by shearing blades 18. An arithmetic control device 47 sends a control signal 33 to a driving device 20 for the shear drums 16 to control the phases of the rotating shear drums 16 in such a manner that when the leading end of the material 17 reaches the shear drums 16, the positions of the shearing blades 18 a little precede the leading end of the material 17, so that the material 17 can be prevented from colliding with the shearing blades 18. During one revolution, the material 17 can be transported by the shear drums 16 without any hindrance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting facility provided on a hot rolling line or a cold rolling line.

[0002]

2. Description of the Related Art A conventional cutting equipment, as shown in FIG.
In the housing 1, a pair of shaft boxes 4 and 5 which can move vertically by an eccentric shaft 2 and a crank lever 3 are provided, and the shear drums 6 and 7 are rotatably supported by the shaft boxes 4 and 5, respectively. Shear blades 9 and 1 for shearing a strip-shaped material 8 such as a strip passed between the outer peripheral surfaces of 6 and 7.
0 is further provided, and notches 11 and 12 are formed by notching part of the outer peripheral surfaces of the shear drums 6 and 7, and the table roller 13 is attached to the notches 12 of the lower shear drum 7.

In the figure, 14 is the conveying direction of the material 8 and 15
Is the direction of rotation of the shear drums 6, 7.

When the conveying speed of the material 8 is low, the shear drums 6 and 7 are in the closest position to each other,
The shear drums 6, 7 are rotated once by a driving device (not shown), and the shear drums 6, 7 are accelerated to the conveying speed of the material 8 during one rotation, and the material 8 is sheared by the shearing blades 9, 10.

When the material 8 is conveyed at a high speed, the shear drums 6, 7 cannot be accelerated up to the material 8 conveyed speed by one rotation, so that the eccentric shaft 2 is rotated and the crank lever 3 and the axle box 4, 4. The shear drums 6 and 7 are separated from each other via the 5 to a position farthest from each other, and in this state, the shear drums 6 and 7 are accelerated while being idled several times by a driving device (not shown), and the shear drums 6 and 7 are accelerated to the conveying speed of the material 8. Once done, the shear drums 6, 7 are brought into close proximity to each other to shear the material 8 with the shear blades 9, 10.

When the material 8 is not cut, the upper shear drum 6 is retracted upward, the lower shear drum 7 is lifted upward, the shear drum 7 is rotated, and the table roller 13 is turned upward. The table roller 13 is stopped and the material 8 is conveyed.

[0007]

However, the above-mentioned conventional shear has the following problems.

That is, since the table roller 13 is provided on the lower shear drum 7 so that the material 8 can be conveyed by the table roller 13, the structure becomes complicated, and when the table roller 13 is stopped upward, In addition, when the stop accuracy of the shear drum 7 is poor, there is a problem that the table roller 13 does not function well as the transport table.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a cutting equipment capable of high-speed cutting which can be used for conveying materials.

[0010]

According to a first aspect of the present invention, a pair of rotatable shear drums are provided so as to be movable in the vertical direction, and the outer peripheral surface of each shear drum is sheared by shearing a strip-shaped material passed therethrough. Each of the blades is provided with a control signal for controlling the phase of the rotating shear drum so that the position of the shear blade slightly precedes the tip of the material when the tip of the material reaches the shear drum. The present invention relates to a cutting facility characterized by being provided with an arithmetic control device for sending to.

A second aspect of the present invention relates to the cutting equipment according to the first aspect, wherein a pinch roll device for drawing in the material is provided on the exit side of the shear drum with a distance shorter than the circumferential length of the shear drum.

[0012]

The operation of the present invention is as follows.

By rotating the pair of shear drums, the material passed therebetween is sheared by the shear blades.

The shear drums are vertically separated from each other to the furthest position and then accelerated to the material conveying speed, and then the shear drum is brought to the closest position to cut the material.

When the material is conveyed by the shear drum, the arithmetic and control unit sends a control signal to the drive device of the shear drum so that when the tip of the material reaches the shear drum, the position of the shearing blade is more than that of the tip of the material. Controls the phase of the rotating shear drum so that the leading edge is slightly ahead of.

As a result, when the shear drum is reached,
Since the tip of the material is prevented from hitting the shearing blade, the material can be conveyed by the shear drum without any trouble until it makes one revolution.

Further, by providing a pinch roll device for pulling in the material on the exit side of the shear drum at a distance shorter than the peripheral length of the shear drum, the shear drum is rotated once before the shear blade returns. Tension can be applied to tension the material upwards to prevent interference between the shear blade and the material.

[0018]

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

1 to 4 show an embodiment of the present invention.

A pair of substantially cylindrical shear drums which can be moved vertically by a lifting mechanism (not shown) similar to the eccentric shaft 2 and the crank lever 3 shown in FIG. 5 in the middle of a hot rolling line or the like. 16 is provided, and a strip-shaped material 1 such as a strip that is passed through the outer peripheral surface of each shear drum 16
A shearing blade 18 for shearing 7 is provided, and a drive device 20 is connected to each shear drum 16 via a speed reducing mechanism 19 such as a pinion stand to configure a cutting device 21.

Further, a pair of upper and lower pinch rollers 22 are provided on the entrance side of the cutting device 21, and a drive device 23 is connected to each pinch roller 22 so that a shear entrance side pinch roll device 24 is provided.
Make up.

Further, a pair of upper and lower pinch rollers 26 are provided on the exit side of the cutting device 21 with a distance 25 shorter than the circumferential length of the shear drum 16, and a driving device 27 is connected to each pinch roller 26. To form the material pull-in pinch roll device 28.

Then, the speed detection signal 30 from the speed detector 29 attached to the driving device 20 of the cutting device 21 and the position detection signal 32 from the position detector 31 attached to the speed reduction mechanism 19 are input, A cutting device control device 34 for sending a control signal 33 to the drive device 20 is provided, and a speed detection signal 36 from a speed detector 35 attached to the shear-side pinch roll device 24 is input to control the drive device 23. Signal 3
A control device 38 for the entrance side pinch roll device for sending 7 is provided,
Further, there is provided a material drawing pinch roll device control device 42 which inputs a speed detection signal 40 from a speed detector 39 attached to the material drawing pinch roll device 28 and sends a control signal 41 to the drive device 27. Cutting device control device 34
Control signals 43 to 4 to the control device 38 for the entry side pinch roll device and the control device 42 for the material pull-in pinch roll device
A central control unit 46 for exchanging 5 is provided to form an arithmetic control unit 47.

Further, a tip detector 48 is provided between the cutting device 21 and the shearing-side pinch roll device 24, and a tip detection signal 49 from the tip detector 48 is input to the central controller 46.

In addition, 50 is a conveying direction of the material 17, 51 is a run-out table in which a large number of table rollers 52 are arranged in the conveying direction 50, 53 is a material guide provided on the exit side of the shear drum 16, and 54 is a cutting device 21. The lower shear drum 16 is used to carry the material 17.
Is the distance between the uppermost point of the shearing blade 18 and the transport level of the runout table 51 when the position is slightly lowered.

Next, the operation will be described.

The eccentric shaft 2 is rotated to separate the shear drum 16 from the furthest position via the crank lever 3 and the axle boxes 4 and 5. In this state, the shear drum 16 is accelerated by the drive device 20, and the shear drum 16 is made of the material 17. When the materials 17 are accelerated to the conveyance speed of 1, the materials 17 are made to approach each other by the shearing blades 18 to be closest to each other.

When the material 17 is cut, the cutting device control device 34 and the entry side pinch roll device control device 3 are operated based on the control signals 43 to 45 from the central control device 46.
8 and the material pull-in pinch roll device control device 42 send control signals 33, 37 and 41 to the respective drive devices 20, 23 and 27, and the cutting device 21 and the shear entrance side pinch roll device 24.
And controlling the drive of the material pull-in pinch roll device 28, and speed detection signals 30, 36 from speed detectors 29, 35, 39 provided in the respective drive devices 20, 23, 27.
40 is input to perform feedback control.

When the material 17 is conveyed to the coiler (not shown) by the cutting device 21, the upper and lower shear drums 16 are retracted upward by the elevating mechanism (not shown) and the lower shear drum 16 is retracted. 16 is slightly lowered from the transport level of the runout table 51, and the position of the uppermost point of the shearing blade 18 and the runout table 5 are lowered.
A gap 54 is formed between the transport level and the transport level of 1.

In this state, the shear drum 16 is rotated by the control signal 33 from the cutting device control device 34 at a speed which is the same as or slightly higher than the conveying speed of the material 17 by the runout table 51.

When the tip of the material 17 passes through the shear-entry side pinch roll device 24 and reaches the tip detector 48, the tip detector 48 sends a tip detection signal 49 to the central controller 46.

Then, the central control unit 46 receives the leading edge detection signal 49 from the leading edge detector 48 and the shearing-side pinch roll apparatus 24 from the inlet-side pinch roll apparatus controller 38.
Based on the control signal 44 indicating the rotation speed of the material 17,
Calculate the time it takes for the tip of the to reach the cutting device 21,
Based on the calculated time, the control signal 43 is sent to the cutting device control device 34, and further, the cutting device control device 34 sends the control signal 33 to the drive device 20 of the shear drum 16, whereby the tip of the material 17 is transferred to the shear drum. When reaching 16, the phase of the rotating shear drum 16 is controlled so that the position of the shearing blade 18 slightly precedes the position of the tip of the material 17, as shown in FIG.

The phase of the shear drum 16 is feedback-controlled based on the position detection signal 32 from the position detector 31.

Then, the tip of the material 17 is supported by the shear drum 16 without encountering the shearing blade 18 of the preceding shear drum 16, as shown in FIG.
Until the shear drum 16 makes one revolution, the material 17 is
The shear drum 16 can be conveyed without trouble by the portion without the shearing blade 18.

On the exit side of the cutting device 21, a pinch roll device 28 for pulling in the material is provided with a distance 25 shorter than the circumferential length of the shear drum 16. In addition, as shown in FIG. 4, the material 17 is bitten by the pinch roll device 28 for drawing in the material and tensioned, so that the material 17 is pulled in a slack-free state.
Even if the shear drum 16 makes one round and the shear blade 18 reaches the uppermost portion, the shear blade 18 prevents the material 17 from being damaged.

As described above, according to the present invention, the material 17 can be cut at a low speed and a high speed, and further, the material 17 can be used for conveying with a simple structure.

The present invention is not limited to the above-described embodiment, but instead of providing the material drawing pinch roll device on the exit side of the cutting device, the conveyance speed of the table roller on the exit side of the cutting device is changed. Needless to say, the material can be stretched by increasing the speed, and various changes can be made without departing from the scope of the present invention.

[0038]

As described above, according to the cutting equipment of the present invention, it is possible to achieve the excellent effect that the material can be cut at high speed and can be used for conveying the material.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an embodiment of the present invention.

FIG. 2 is an operation diagram in a case where a material is conveyed by the apparatus of FIG.

FIG. 3 is a next operation diagram of FIG. 2.

FIG. 4 is a next operation diagram of FIG. 3;

FIG. 5 is a schematic side view of a conventional example.

[Explanation of symbols]

 16 Shear Drum 17 Material 18 Shearing Blade 20 Drive Device 25 Distance 28 Material Pull-in Pinch Roll Device 33 Control Signal 47 Arithmetic Control Device

Claims (2)

[Claims] 1. A pair of rotatable shear drums are provided so as to be movable in the vertical direction, and a shear blade for shearing a band-shaped material that is passed through is provided on the outer peripheral surface of each shear drum. When you reach the shear drum,
A cutting facility provided with an arithmetic and control unit for sending a control signal for controlling a phase of a rotating shear drum to a drive unit of the shear drum so that the position of the shear blade slightly precedes the tip of the material. 2. The cutting equipment according to claim 1, wherein a pinch roll device for drawing in the material is provided on the exit side of the shear drum at a distance shorter than the circumferential length of the shear drum.