JPH07290142A - Uncoiler device - Google Patents

Abstract

PURPOSE:To provide an uncoiler device arranged with a meandering prevention device for a coiling material when a coiling material is held/pulled by a pinch roll of leveler device and is uncoiled from an uncoiler device. CONSTITUTION:When a coiling material 2 is held to a drum 1B of a coiler device 1, back tension force is given by a brake 6. When the coiling material 2 is held by a pinch roll, an inclination of the drum 1B generated by coil weight is detected at the lower face of uncoiled coiling material 2 by a laser displacement meter (3A, 3B). In order that this inclination is regulated in the allowable range set beforehand and the coiling material 2 is set horizontal to a pinch roll of leveler device, the device is constituted of vertical elevating devices (5A, 5B), which make an uncoiler device main body 1A adjustable as pivots (4A, 4B) is supporting points on a frame 1C, and a positioning control device to control the above.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an uncoiler device for holding a winding drum portion of a coil material which is a primary press working material and for unwinding the coil material.

[0002]

2. Description of the Related Art FIG. 7 shows a top view of a line structure of an embodiment of the prior art and FIG. 8 shows a front view thereof. As shown in the figure, the coil material 2 held by the drum 1B of the uncoiler device 1 is pinched by the pinch rolls of the leveler device 8, pulled and unwound, and the work roll is used to correct the unwinding and counter. It is fed to the press machine 10 by the feeder 9. In such a conventional example, when the coil material 2 held by the drum 1B of the uncoiler device 1 is clamped by the pinch rolls of the leveler device 8 and is pulled and unwound,
The drum 1B of the uncoiler device 1 tilts due to the coil weight, and the tension in the coil width direction changes. However, since the pinch roll holding force of the leveler device 8 is constant, the coil material 2
Deviation occurs in the width direction of the coil material 2, which causes the coil material 2 to meander, and the guide roller provided at the inlet of the leveler device 8 damages the edge portion of the coil material 2, and finally the coil material 2 is fed. Salary is also impossible.

Therefore, due to such a change in coil weight (in other words, coil outer diameter), centering of the coil material 2 is performed again during the press working operation, and adjustment is made every time the coil material 2 is replenished or replaced. Is forced. Further, as the coil material 2, a rolled long plate is passed through a slitter and wound in a coil shape to have a required width dimension. Therefore, a plate thickness deviation different in each coil width direction is used for each coil. Therefore, the tension at both ends of the coil width of the pinch roll of the leveler device 8 changes, causing the coil material 2 to meander, which causes the same problem as described above.

[0004]

SUMMARY OF THE INVENTION In the conventional method, the back tension force for preventing the coasting of the drum of the uncoiler device is adjusted so as to prevent the coil from unraveling, and the meandering of the coil material is suppressed as much as possible. It corresponded to. However, in this method, when the coil material plate thickness is relatively thin,
It is necessary to adjust the back tension force according to the change in the outer diameter of the coil, and it takes a lot of time and effort to set up the coil material before it can be fed.

In the present invention, the above-mentioned problems are solved, and a coil material meandering preventive device is provided so that the coil material does not meander when the coil material is unwound from the uncoiler device by the pulling force of the pinch roll of the leveler device. An uncoiler device is provided.

[0006]

As means for preventing the coil material from meandering, the coil material unwound from the uncoiler device is held horizontally with the pinch roll of the leveler device so that the tension at both ends of the coil width is the same. Alternatively, the coil material may be finely rotated to maintain the coil material feeding position from the uncoiler device so that the tensions at both ends of the coil width with respect to the pinch roll of the leveler device become the same. Therefore, a pivot, a moving device, and a positioning control device are provided as the horizontality detecting means for detecting the position and orientation of the coil material and the means for correcting the position and orientation of the coil material.

[0007]

[Function] The level of the coil material held on the drum of the uncoiler device is detected by the displacement sensor, and when the preset value exceeds the allowable value, the coil material is adjusted so that the coil material is within the allowable value. An up-and-down lifting device installed between the frames is moved up and down with the pivot as a fulcrum, and the uncoiler device main body is tilted to maintain the posture of the coil material.

If the above method cannot be taken, the center of the coil material held on the drum in the width direction and the center of the pivot are made to coincide with each other, so that a moving device for moving the uncoiler device main body and its positioning are provided. A control device is provided, and while the coil material between the uncoiler device and the leveler device is projected, the uncoiler device main body is finely rotated around the pivot to feed the coil material to the leveler device.

[0009]

1 is a top view of a first embodiment of the present invention, and FIG. 2 is a front view thereof. When the winding drum portion of the coil material 2 which is the primary press working material is held by the drum 1B of the uncoiler device main body 1A, the brake 6 applies an appropriate back tension force. The drum 1B rotates to unwind the coil material 2, and a leveler device (not shown)
When the coil material 2 is sandwiched between the pinch rolls, the laser displacement meter (3A, 3B) installed on the installation surface of the uncoiler device 1 for tilting the drum 1B caused by the coil weight.
Thus, the lower surface of the coil material 2 unwound from the drum 1B is detected. The tilt detected by the laser displacement gauges (3A, 3B) is transmitted to a positioning control device (not shown) having a calculation function, and when the tilt of the coil material 2 exceeds a preset allowable value, positioning is performed. According to a command from the control device, the height of the uncoiler device body 1A is adjusted from the gantry 1C using the pivots (4A, 4B) as a fulcrum until the inclination falls within the allowable value by the vertical lifting devices (5A, 5B). By thus making the coil material 2 horizontal with the pinch roll of the leveler device, the coil material 2 is prevented from meandering.

A second embodiment is shown in FIGS. 3 and 4. When the winding drum portion of the coil material 2 is held by the drum 1B of the uncoiler device main body 1D, an appropriate back tension force is applied by the brake 6. When the plate width dimension of the coil material 2 measured in advance is input to a positioning control device (not shown) having a calculation function, the moving device 7 causes the uncoiler device main body 1D to pivot 4 by receiving a command from the positioning control device. The center X0 and the center X1 of the coil material 2 in the plate width direction move so as to coincide with each other. When the alignment is completed, the drum 1B rotates, the coil material 2 is unwound, and the coil material 2 is sandwiched by the pinch rolls of the leveler device, the coil material 2 is fed while being pulled by the pinch rolls. At that time, the uncoiler device main body 1D feeds the coil material 2 around the pivot 4 while making fine movements on the gantry 1C, and pulls out the coil material with the pinch roll of the leveler device to make the coil material 2 meander. Is prevented.

The third embodiment shown in FIGS. 5 and 6 shows the case of the uncoiler device 1 which is constructed by sandwiching the coil material 2 from both ends. Even in this case, if the coil material 2 has a plate thickness deviation, the coil material 2 is inclined. When the coil material 2 is held by the drums (1B, 1G) of the uncoiler device main bodies (1E, 1F) provided with moving devices (not shown) respectively, the brakes 6 provide an appropriate back tension force. As in the second embodiment, the center X1 of the coil material 2 held by both drums (1B, 1G) in the plate width direction and the center X0 of the pivot 4 are aligned by the moving device and the positioning control device. , Are aligned. When the alignment is completed and the drums (1B, 1G) rotate to unwind the coil material 2 and the coil material 2 is sandwiched by the pinch rolls of the leveler device, the coil material 2 is fed while being pulled by the pinch rolls. Be paid. At that time, the uncoiler device main body (1E, 1F) feeds the coil material 2 while finely rotating on the pedestal 1C around the pivot 4, and pulls out the coil material with the pinch roll of the leveler device, thereby Material 2
Of meandering is prevented.

[0012]

Since the back tension force of the uncoiler device can be kept constant with respect to the coil material to prevent the coil material from meandering, press working can be performed without damaging the coil material. Especially, it is effective for a wide coil material.

[Brief description of drawings]

FIG. 1 is a top view of a first embodiment of the present invention.

FIG. 2 is a front view of the same first embodiment.

FIG. 3 is a top view of the second embodiment of the present invention.

FIG. 4 is a front view of the same second embodiment.

FIG. 5 is a top view of the third embodiment of the present invention.

FIG. 6 is a front view of the same third embodiment.

FIG. 7 is a top view of a line configuration of a conventional example.

FIG. 8 is a front view of a line configuration of a conventional example.

[Explanation of symbols]

1 is an uncoiler device, 1A, 1D, 1E, 1F is an uncoiler device main body, 1B, 1G is a drum, 1C is a mount, 2 is a coil material, 3A, 3B is a laser displacement meter, 4, 4A, 4B
Is a pivot, 5A and 5B are vertical lifting devices, 6 is a brake, 7 is a moving device, X0 is the center of the pivot, X1 is the center of the coil material in the plate width direction, 8 is a leveler device, 9 is a counter feeder, and 10 is a press. A machine.

Claims (2)

[Claims] Claim: What is claimed is: 1. An uncoiler device for holding a winding drum portion of a coil material, and unwinding the coil material by rotating the winding drum portion around a horizontal axis, which is held by the uncoiler device and fed to a leveler device. The horizontality detection device for detecting the horizontality of the coiled material, and the coiled material unwound by the pulling force of the pinch roll of the leveler device, so that it is always horizontal with the pinch roll. An uncoiler device in which the coil material is prevented from meandering by inclining the uncoiler device body by a vertical lifting device and a pivot. 2. A coil material is held by holding the winding drum portion of the coil material and rotating the winding drum portion about a horizontal axis to unwind the coil material, and the coil material is fed by a pulling force of a pinch roll of a leveler device. In the uncoiler device to be fed, the center of the pivot and the moving device for aligning the center of the coil material held in the winding drum portion in the width direction of the uncoiler device main body with the positioning control device are provided, and the uncoiler device main body is provided around the pivot center. An uncoiler device which is rotatable and prevents the coil material from meandering by pulling out the coil material with a pinch roll of a leveler device.