JPH0520343B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a conveying device for a belt-like material such as a metal strip, and more specifically, to a device for preventing the occurrence of wrinkles in the belt-like material in a meandering correction device. be.

[Prior Art and its Problems] In general, a steering correction device as shown in FIG. 3 is provided to prevent meandering of a belt-shaped material such as a metal strip during conveyance. That is, a strip material a is wound around a steering roll b, and the steering roll b
is a bearing c supporting one end as illustrated in Fig. 4.
is supported on a pedestal d that can freely rotate in a horizontal plane, a bearing c' that supports the other end of the steering roll b is fixed to the tip of the piston rod of the cylinder e, and a position sensor f is provided to detect the amount of meandering. The cylinder e is actuated by a command based on a detection signal, and the steering roll b is tilted in a horizontal plane about the bearing c as a fulcrum to correct its meandering. Fifth
The one shown in the figure is a meandering correction device that has also been used in the past, in which bearings c and c' supporting both ends of steering roll b are connected to guide rail g and
Since it is slidably supported on g', the steering roll b can slide in an arc in a horizontal plane using a certain point on the upstream side as a fulcrum.

However, in these conventional meandering correction devices, tension is concentrated on the meandering side of the strip material a due to the tilting of the steering roll b, and loosening occurs on the non-meandering side, so especially in the case of thin material, the tension side There was a risk that wrinkles would occur at the border between the side and the loose side, resulting in defective products.

[Means for Solving the Problems] Therefore, the present invention provides a method for correcting the meandering of the strip material being conveyed in a fixed direction, at an upstream position in the vicinity of a tiltable steering roll, on both sides of the strip material. At least three fluid nozzles facing each other are provided, and the relaxed portion of the strip material is shaped into a wave shape by the spray pressure of the fluid nozzles.

[Example] In FIGS. 1 and 2, 1 is a belt-shaped material that is guided by a steering roll 2 and transported in the direction of the arrow, and a chamber 3 is provided on one side of the upstream position near the steering roll 2. , the chamber 3
Three fluid nozzles 4a, 4b, and 4c are provided on both sides of the strip material 1 so as to alternately face each other. Gas such as air or non-oxidizing gas is fed into the chamber 3 from a blower (not shown), and the gas is sent to the fluid nozzle 4.
A, 4b, and 4c are sprayed onto the strip material 1, and the spray pressure shapes the relaxed portion of the strip material 1 into a waveform as shown in the figure. Therefore, the strip material 1
The tension on the relaxed side becomes high, and the uneven distribution of tension caused by meandering correction is alleviated, so the generation of wrinkles is suppressed.

In this embodiment, the pedestal 6 of the bearing 5 supporting one end of the steering roll 2 and the bearing 7 at the other end are
By providing the cylinder 8 for moving forward and backward on the inclined surface inclined downward at 45 degrees with respect to the direction in which the strip material 1 is carried in, the steering roll 2 can be moved on the inclined surface at 45 degrees using the pedestal 6 as a fulcrum. It is configured to tilt, and by doing so, the uneven distribution of the tensile force of the strip material 1 can be alleviated, so this configuration is also effective in preventing the occurrence of wrinkles.

[Effects of the Invention] As described above, the strip material conveying device of the present invention can make the strip material wavy by providing at least three fluid nozzles at the upstream position near the steering roll so as to alternately face both sides of the strip material. Since it is shaped, it has the effect of reducing the incidence of defective products without causing wrinkles even if the tensile force applied to the strip material is unevenly distributed due to the tilting of the steering roll for meandering correction.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a belt material conveying device showing an embodiment of the present invention, Fig. 2 is a side view thereof, Fig. 3 is a side view of a conventional device, Fig. 4 is a plan view thereof, and Fig. 5 is a side view thereof. Similarly, it is a plan view of the conventional device. 1... Strip material, 2... Steering roll, 4
a, 4b, 4c...Fluid nozzle.

Claims (1)

[Claims] 1 At least three fluid nozzles facing alternately on both sides of the strip material are provided at an upstream position near a tiltable steering roll to correct the meandering of the strip material being conveyed in a fixed direction, and A belt-like material conveying device characterized in that the relaxed portion of the belt-like material is shaped into a wavy shape by the spray pressure of a nozzle.