JPH04223818A - Cutting device - Google Patents

Abstract

PURPOSE:To maintain the gap of blades constant, and to make the moving speed of a long size material to be cut in a high speed, in a cutting device furnishing blades to the upper and the lower drums. CONSTITUTION:The upper and the lower drums 2 and 6 are separated to make into the condition that blades 45 and 46 installed to the upper and the lower drums 2 and 6 are withdrawn to the upper and the lower sides of the moving line S of a long size material 1 by fluid pressure cylinders 11a, 11b, 13a, and 13b, until the rotation speed of the upper and the lower drums 2 and 6 is accelerated to a specific speed, and when the rotation speed of the upper and the lower drums 2 and 6 is accelerated to the specific speed, the upper and the lower drums 2 and 6 are approached by the fluid pressure cylinders 11a, 11b, 13a, and 13b, the gears 14a 14b, 15a, and 15b fixed to the shafts 3a, 3b, 7a, and 7b of the drums 2 and 6 are engaged each other, and the blades 45 and 46 are approached to the moving line S of the long size material 1 while maintaining the gap between the blades 45 and 46 constant, so as to cut the long size material 1.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device.

0002

[Prior Art] Conventionally, as a device for cutting a long material such as a steel plate that moves horizontally in the longitudinal direction in the width direction,
Like the drum shear disclosed in Publication No. 1-53172, drums extending in the material width direction are rotatably arranged above and below the material movement line, and blades extending in the material width direction are fixed to the upper and lower drums, Furthermore, there is a method in which the upper and lower drums are mechanically connected via a power transmission mechanism such as a gear so that the upper and lower drums are driven synchronously, and a method disclosed in Japanese Patent Application Laid-Open No. 52-13248.
Like the drum type flying shear disclosed in Publication No. 5, drums extending in the width direction of the material are rotatably disposed above and below the material movement line, and blades extending in the width direction of the material are fixed to the upper and lower drums. Furthermore, there is a device in which either one or both of the upper and lower drums is movable in the vertical direction, so that the blades fixed to each drum can be retracted from the movement line of the long material.

0003

[Problem to be solved by the invention] However,
In the drum shear disclosed in Japanese Patent No. 53172, the upper and lower blades cut the long material before the drum rotates once, so the drum cannot be sufficiently accelerated while the drum is stopped. It is not possible to increase the movement speed of.

On the other hand, in the drum shear disclosed in JP-A-52-132485, the upper and lower drums are not mechanically connected via a power transmission mechanism, so the long material is cut by rotating the upper and lower drums. In some cases, it was difficult to maintain a constant gap between the upper and lower blades, making it impossible to cut long materials cleanly.

The present invention is intended to solve the above-mentioned problems, and aims to make it possible to cut a long material cleanly even when the moving speed of the long material is increased.

[0006]

[Means for Solving the Problems] The present invention provides upper and lower drums extending in the width direction of the long material above and below the movement line of the long material that moves horizontally in the longitudinal direction, and at the left and right ends of each drum. In a cutting device in which a chock supports a shaft portion formed in A hydraulic cylinder is provided that can raise and lower the chock that is supported freely and can be raised and lowered, and gears are fixed to the shafts of the upper and lower drums so that they can mesh when the upper and lower drums come close to each other. A synchronous drive device is connected to the shaft portion of the drum via a power transmission mechanism, and the power transmission mechanism is provided with a sensor capable of detecting the rotation speed of at least one of the upper and lower drums and outputting a detection signal, and the detection from the sensor is provided. A controller is provided that outputs a switching signal to a servo switching valve provided in a conduit that applies fluid pressure to the fluid pressure cylinder based on the signal.

[0007]

[Operation] When cutting a long material that moves horizontally in the longitudinal direction, the upper and lower drums are rotated by the drive device.

[0008] When the upper and lower drums rotate and the number of rotations detected by the sensor reaches a predetermined number of rotations, and the blades of each drum are located on the downstream side of the moving line of the long material, the controller outputs a switching signal. The servo switching valve is switched by the switching signal, and the chock, which is supported so that it can be raised and lowered, approaches the moving line of the long material by the hydraulic cylinder, and the gears on the shafts of the upper and lower drums are engaged, causing the rotation of the upper and lower drums. As a result, the blade cuts the long material while maintaining a constant gap.

On the other hand, when a long material is cut by the blade, the upper and lower rolls rotate above a predetermined number of rotations, and the controller no longer outputs a switching signal to the servo switching valve, causing the chock, which is supported to move up and down, to The pressure cylinder moves the long material away from the moving line, and the gears on the shafts of the upper and lower drums are disengaged.

0010

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 to 6 show an embodiment of the present invention,
A lower drum 2 extending horizontally in the width direction of the long material 1 is disposed below a movement line S of a long material 1 such as a steel plate that moves horizontally in the longitudinal direction, and formed at the left and right ends of the lower drum 2. The shaft portions 3a, 3b that have been
a, 5b, and an upper drum 6 having the same shape as the lower drum 2 and extending horizontally in the width direction of the elongated material 1 is disposed above the movement line S of the elongated material 1. 6
The shaft portions 7a, 7b formed at the left and right ends of the bearings 8a, 8
The blades 45 and 46 extending in the width direction of the elongated material 1 are fixed to the lower drum 2 and the upper drum 6, respectively.

Below the lower chocks 5a, 5b, lower hydraulic cylinders 11a, 11b having piston rods 10a, 10b extending upward are installed.
The upper hydraulic cylinders 13a, 13b are arranged so that the upper ends of the upper chocks 10b can come into contact with the lower surfaces of the lower chocks 5a, 5b, and the upper hydraulic cylinders 13a, 13b have piston rods 12a, 12b extending downwards above the upper chocks 9a, 9b. , piston rod 1
2a, 12b and upper chocks 9a, 9b are fixed.

The lower chocks 5a, 5b and the upper chocks 9a, 9b are fitted into a housing (not shown) so as to be movable up and down, and the lower hydraulic cylinders 11a, 11b and the upper hydraulic cylinders 13a, 13b are fitted into the housing. It is fixed against.

Lower gears 14a, 14b are fixed coaxially to the left and right shafts 3a, 3b of the lower drum 2, and upper gears 1 having the same shape as the lower gears 14a, 14b are fixed to the left and right shafts 7a, 7b of the upper drum 6.
5a and 15b coaxially, and the lower gears 14a and 14b
It is fixed so that it can be engaged with.

Further, lower rings 16a and 16b are coaxially fixed to the left and right shaft portions 3a and 3b of the lower drum 2, and an upper ring 17a having the same shape as the lower rings 16a and 16b is attached to the left and right shaft portions 7a and 7b of the upper drum 6. , 17b are fixed coaxially and so as to be able to abut on the lower rings 16a, 16b.

Lower rings 16a, 16b and upper ring 17a
, 17b are the lower chocks 5a, 5b and the upper chock 9a,
9b come into contact with each other when they come close to each other.

Upper and lower parts 2 extending horizontally in the width direction of the long material 1
A gear box 22 is formed by fixing pinions 20 and 21 to the power transmission shafts 18 and 19 of the book, and supporting the power transmission shafts 18 and 19 so that the pinions 20 and 21 mesh with each other. 22 is disposed on one end side of the upper drum 6 and lower drum 2, and universal joints 23, 24 are connected to couplings 47, 48 attached to the shaft portions 7b, 3b.
Connecting one end of the intermediate shafts 25 and 26 via the
Universal joints 27, 28 are provided at one ends of the power transmission shafts 18, 19.
The other ends of the power transmission shafts 18 and 19 are connected via.

An output shaft 31 of a motor 30 is connected to the other end of the power transmission shaft 18 via a joint 29.
A detection shaft 34 of a rotational position sensor 33 is connected to the other end of the rotational position sensor 33 via a joint 32.

A servo switching valve 37 is connected via a pipe line 36 to a hydraulic oil discharge port of a hydraulic pump 35 that discharges hydraulic oil sucked up from a hydraulic oil tank 41.
The head side fluid chambers of the lower hydraulic cylinders 11a, 11b and the upper hydraulic cylinders 13a, 13b are connected via the pipe 38,
Also, the lower hydraulic cylinders 11a, 11b are connected via the pipe line 39.
The rod-side fluid chambers of the upper hydraulic cylinders 13a and 13b are further connected to a hydraulic oil tank 41 via a conduit 40.

The rotational position sensor 33 is connected to the power transmission shaft 19.
A detection signal 42 that detects and outputs the rotational position of the controller 43 is guided to the controller 43.
3 guides a switching signal 44 outputted based on the detection signal 42 to the servo switching valve 37.

The servo switching valve 37 is positioned so that when the switching signal 44 is not input, the pipe line 36 and the pipe line 39 communicate with each other, and the pipe line 41 and the pipe line 38 communicate with each other. It is configured such that the positions can be set so that when the signal 44 is input, the pipe line 36 and the pipe line 38 communicate with each other, and the pipe line 41 and the pipe line 39 communicate with each other.

The controller 43 also receives the detection signal 42
The power transmission shaft 19 rotates a predetermined number of times based on
(see Figure 2), the switching signal 4
4 is output.

The operation of the present invention will be explained below.

When cutting the long material 1 that is moving longitudinally between the upper drum 6 and the lower drum 2, when the motor 30 is driven, the rotational force of the motor 30 is transferred to the output shaft 31.
, joint 32, support shaft 18, universal joint 27, intermediate shaft 25,
The rotational force transmitted to the shaft portion 7b via the universal joint 23 to rotate the upper drum 6, and the rotational force transmitted from the motor 30 to the support shaft 18, is transmitted to the pinions 20, 21, the support shaft 19, the universal joint 28, and the intermediate shaft 26. , the shaft portion 3b via the universal joint 24
The lower drum 2 rotates.

At this time, the switching signal 44 is not output from the controller 43 to the servo switching valve 37, and the hydraulic oil discharged by the hydraulic pump 35 passes through the pipe 36, the servo switching valve 37, and the pipe 39, and Hydraulic cylinders 11a, 11b,
Pressure is applied to the piston rod side fluid chambers of piston rods 10a, 10b, 12a, 1
2b is maintained in a retracted state, upper chocks 9a, 9b and lower chocks 5a, 5b are separated from each other, and upper gears 15a, 15b and lower gears 14a, 14b are disengaged. The blades 45, 45 are in a retracted state above and below the movement line S of the long material 1 (
(See Figure 2).

On the other hand, when the support shaft 19 is accelerated and rotated by the motor 30 and rotates a predetermined number of times, and the circumferential speeds of the upper drum 6 and the lower drum 2 reach a predetermined speed, the rotational position sensor 33 is sent to the controller 43. The controller 43 which outputs the detection signal 42 and receives the detection signal 42 inputs a switching signal 44 to the servo switching valve 37 .

The servo switching valve 37 allows the pipe line 36 and the pipe line 38 to communicate with each other and the pipe line 41 and the pipe line 3 to communicate with each other according to the switching signal 44.
The position is set so that the hydraulic pump 35 communicates with the pipe 36, the servo switching valve 37, and the pipe 3.
8 to each hydraulic cylinder 11a, 11b, 13a, 13
Pressure is applied to the head side fluid chamber of b, and the piston rod 1
0a, 10b, 12a, 12b protrude and upper chock 9
a, 9b and the lower chocks 5a, 5b approach each other, and before the blades 45, 46 cut the long material 1, the upper gears 15a, 15b and the lower gears 14a, 14b mesh (
(see FIG. 3), and as the upper drum 6 and lower drum 2 rotate, the blades 45 and 46 cut the long material 1 while maintaining a predetermined gap (see FIG. 4). drum 6
, 2, the elongated material 1 moves away from the movement line S (see FIG. 5).

At this time, the upper rings 17a, 17b and the lower rings 16a, 16b come into contact with each other, and the upper gears 15a, 15b
The lower gears 14a and 14b mesh appropriately.

On the other hand, when the long material 1 is cut by the blades 45 and 46, the support shaft 19 has rotated more than a predetermined number of times, and the switching signal 44 is no longer output from the controller 43 to the servo switching valve 37, and the servo The switching valve 37 is positioned so that the pipe line and the pipe line 39 communicate with each other, and the pipe line 41 and the pipe line 39 communicate with each other. , pressure is applied to the piston rod side fluid chambers of each cylinder 11a, 11b, 13a, 13b via the pipe line 38, and the piston rod 10
a, 10b, 9a, 9b retreat and upper chocks 9a, 9
b and the lower chocks 5a, 5b separated from each other, and furthermore, the upper gears 15a, 15b and the lower gears 14a, 14b were disengaged, and the drums 6, 2 were retracted up and down the movement line S of the longitudinal material 1. state (see Figure 6).

As described above, in the present invention, the blade 45,
Since the upper drum 6 and the lower drum 2 are rotated while the blades 46 are retracted up and down the movement line S of the long material 1, the circumferential speeds of the upper drum 6 and the lower drum 2 are sufficiently accelerated and the blades 45
, 46 can be improved, making it possible to cut the long material 1 that moves at high speed. Since the lower gears 14a and 14b mesh with each other and the gap between the blades 45 and 46 is maintained at a predetermined amount, the long material 1 can be cut cleanly.

Note that the cutting device of the present invention is not limited to the above-described embodiments, but may be constructed so that only one of the upper drum or the lower drum is raised and lowered, and that the upper and lower chocks are not provided with upper and lower rings. Of course, various changes can be made without departing from the spirit of the present invention, such as adjusting the meshing conditions of the upper and lower gears by bringing them into contact with each other.

[0032]

As explained above, the cutting device of the present invention can produce various excellent effects as described below.

(1) The blade is kept retracted above and below the movement line of the long material until the rotation speed of the upper and lower drums is accelerated to a predetermined speed, so that the movement speed of the blade can be sufficiently accelerated. Therefore, it becomes possible to cut long materials that move at high speed, and it becomes possible to efficiently perform cutting operations on long materials.

(2) When cutting a long material with the blade, the gears on the shafts of the upper and lower drums are engaged and the gap between the blades is maintained at a predetermined amount, so that the long material can be cut cleanly. can.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway sectional view of an embodiment of a cutting device of the present invention.

FIG. 2 is a side view showing the movement of the gear fixed to the upper and lower roll shafts and the blade fixed to the upper and lower rolls of an embodiment of the cutting device of the present invention.

FIG. 3 is a side view showing the movement of the gear fixed to the upper and lower roll shafts and the blade fixed to the upper and lower rolls of an embodiment of the cutting device of the present invention.

FIG. 4 is a side view showing the movement of the gear fixed to the upper and lower roll shafts and the blade fixed to the upper and lower rolls of an embodiment of the cutting device of the present invention.

FIG. 5 is a side view showing the movement of the gear fixed to the upper and lower roll shafts and the blade fixed to the upper and lower rolls of an embodiment of the cutting device of the present invention.

FIG. 6 is a side view showing the movement of the gear fixed to the upper and lower roll shafts and the blade fixed to the upper and lower rolls of an embodiment of the cutting device of the present invention.

[Explanation of symbols]

1 Long material 2 Lower drum (drum) 3a, 3b
, 7a, 7b Shaft portions 5a, 5b
Lower chock (chock) 6
Upper drum (drum) 9a, 9b
Upper chock (chock) 11a, 11b
Lower hydraulic cylinder (fluid pressure cylinder) 13a, 11b Upper hydraulic cylinder (fluid pressure cylinder) 14a, 14b Lower gear (gear)
15a, 15b upper gear (gear)
22 Gear box (tuned drive device) 23, 24, 27, 28 Universal joint (power transmission mechanism) 25, 26 Intermediate shaft (power transmission mechanism) 30 Motor (tuned drive device)
33 Rotational position sensor (sensor) 3
6, 38, 39 Pipe line 37
Servo switching valve 42 Detection signal 43 Controller 44
Switching signal 45, 46 Blade S movement line

Claims (1)

[Claims] Claim 1: Upper and lower drums extending in the width direction of the long material are disposed above and below the movement line of the long material that moves horizontally in the longitudinal direction, and shaft portions formed at the left and right ends of each drum are chocked. In a cutting device in which a blade extending in the width direction of a long material is fixed to each drum, one or both of a chock supporting an upper drum and a chock supporting a lower drum are supported in a vertically movable manner. A hydraulic cylinder is provided that can raise and lower a chock that is supported so that it can be raised and lowered, and a gear is fixed to the shaft of the upper and lower drums so that they can mesh when the upper and lower drums approach each other, thereby transmitting power to the shafts of the upper and lower drums. A synchronized drive device is connected via a mechanism, and the power transmission mechanism is provided with a sensor capable of detecting the rotation speed of at least one of the upper and lower drums and outputting a detection signal, and the fluid pressure is adjusted based on the detection signal from the sensor. A cutting device characterized in that a controller is provided for outputting a switching signal to a servo switching valve provided in a conduit that applies fluid pressure to a cylinder.