JPS6164654A - Strip material carrier - Google Patents

Abstract

PURPOSE:To suppress rimple by waving the loose portion of strip material through the pressure of fluid passed through at least three nozzles thereby correcting zigzag effectively. CONSTITUTION:A chamber 3 is provided in the upstream near a steering roll 2 for correcting zigzag of strip material 1. Three fluid nozzles 4a-4c are provide while facing alternately against the opposite faces of the strip material 1 to blow pressure gas to the strip material to be fed in predetermined direction. Consequently, loose portion of the strip material is waved to increase tensile force at the loose side thus to relieve the tensile force shifted through zigzag correction and to suppress rumple.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a conveying device for a strip material such as a metal strip,
More specifically, the purpose is to prevent the occurrence of wrinkles in the strip material in the meander correction device.

[Prior Art and Its Problems] In general, a meandering 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, the belt-shaped material a is wound around a steering roll b, and the steering roll b supports a bearing C supporting one end on a pedestal d that can freely rotate in a horizontal plane, as illustrated in FIG. Bearing C', which supports the other end of steering roll b, is fixed to the tip of the piston rod of cylinder e and meandering.

A position sensor f for detecting the amount is provided, and a cylinder e is actuated by a command based on the detection signal, and the steering roll b is tilted in a horizontal plane using a bearing C as a fulcrum to correct its meandering. What is shown in Figure 5 is the same〈
In the conventional meandering correction device, bearings C and C' supporting both ends of the steering roll b are the guide rail g.

Since the steering roll b 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 when the material is thin, the tension side There was a risk that wrinkles would occur at the border between the product and the support side, resulting in defective products.

[Means for Solving the Problems] Therefore, the present invention provides a system that is provided at an upstream position near a steering roll provided for correcting the meandering of a belt-shaped material that is conveyed in a fixed direction, and that is arranged alternately on both sides of the belt-shaped material. At least three fluid nozzles are provided, and the relaxed portion of the strip material is shaped like a wave in a peg shape by the spraying pressure of the fluid nozzles.

[Example] In FIGS. 1 and 2, 1 is a strip material that is guided by a steering roll 2 and conveyed in the direction of the arrow, and a chamber 3 is provided on one side of the upstream position near the steering roll 2. Three fluid nozzles 4a, 4b, and 4c are provided from the chamber 3 so as to alternately face both sides of the strip material 1. A blower (not shown) pumps gas such as air or non-oxidizing gas into the chamber 3, and the gas is sent to the fluid nozzle 4a.

4b and 4c are sprayed onto the strip material 1, and the spray pressure causes the relaxed portion of the strip material 1 to be shaped into a wavy shape as shown in the figure. Therefore, (a) the tension on the relaxed side of the F-shaped material 1 becomes high, and the uneven distribution of tensile force associated with meandering correction is alleviated, so that the occurrence of wrinkles is suppressed.

In this embodiment, the cylinder 8 for advancing and retracting the pedestal 6 of the bearing 5 that supports one end of the steering roll 2 and the I+b bearing 7 at the other end is mounted on an inclined surface inclined downward at 45 degrees with respect to the direction in which the strip material 1 is carried in. By providing this, the steering roll 2 is configured to tilt on this 45° inclined surface using the pedestal 6 as a fulcrum, and by doing so, uneven distribution of tensile force on the strip material l can be alleviated. Therefore, this configuration is also effective in preventing the occurrence of wrinkles.

[Effects of the invention: Correcting meandering in the belt material conveying device reduces the occurrence of wrinkles and reduces the number of defective products.5

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a strip material conveying device showing an embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a side view of a conventional device.
FIG. 4 is a plan view thereof, and FIG. 5 is a plan view of the same conventional device. ■・・・Band material, 2...Steering roll, 4
a, 4b, 4c...Fluid nozzle 6 Patent applicant Daido Steel Co., Ltd. Agent Patent attorney Tsuyoshi Ito-1,-L

Claims (1)

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