JPH022481Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an edger capable of preventing buckling of a strip.

[Conventional technology]

Conventionally, when a thin strip is width-reduced by an edger, the strip S is held down by upper and lower presser rolls a and b, and the width of the strip S is reduced by a vertical roll c, as shown in FIG.

[Problem that the invention attempts to solve]

However, in the case of the above-mentioned Etsiya,
The grip portions of the upper and lower presser rolls a and b on the strip S are in line contact and cannot be gripped reliably, so if the width of the strip S is significantly reduced with the vertical roll c, there is a risk that the strip S will buckle. If the gripping force is increased to prevent buckling of the strip S, there are problems such as an increase in the size of the entire device.

The present invention was developed in view of the above-mentioned circumstances, with the aim of reliably gripping the strip with a small gripping force and preventing buckling of the strip even when the width of the strip is significantly reduced. .

[Means for solving problems]

In the present invention, in an edger in which the width ends of the strip are gripped by upper and lower press rolls and the width is rolled down by vertical rolls, the outer circumferences of the vertical roll sides of the upper and lower press rolls are tapered in opposite directions.

[Effect]

Therefore, in the present invention, the width of the strip is reduced by the upper and lower press rolls with the width end bent, so even if the grip force of the upper and lower press rolls is small and the amount of width reduction is large, buckling will not occur in the strip. .

〔Example〕

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

FIG. 1 shows an embodiment of the present invention, in which an upper presser roll 2 is rotatably attached to a bracket 1 which can be raised and lowered by a hydraulic cylinder (not shown), and a frame is attached below the upper presser roll 2. A bracket 4 is fixed to the roller 3, and a lower presser roll 5 is rotatably attached to the bracket 4. Further, a vertical roll 7 which is rotated by a drive device is attached to a bracket 6 which can be moved in the width direction of the strip S by a reduction cylinder (not shown).

The shape of the outer periphery of the body of the upper presser roll 2 is cylindrical at the center of the strip, and tapered to gradually increase in diameter toward the vertical roll 7 at the end of the strip. The shape of the outer periphery of the body of the lower presser roll 5 is cylindrical in parallel to the cylindrical portion of the upper presser roll 2 on the strip center side, and tapers to a diameter that gradually becomes smaller toward the vertical roll 7 on the strip end side. It is shaped like this. The tapered portions of the upper and lower presser rolls 2 and 5 are parallel to each other, and the gap between the upper and lower presser rolls 2 and 5 is equal between the cylindrical portion and the tapered portion. Furthermore, the shape of the outer periphery of the body of the vertical roll 7 is tapered so that the diameter gradually decreases as it goes upwards, and the end surface of the width end of the strip S gripped by the tapered part of the upper and lower presser rolls 2 and 5 is attached to the upper and lower presser rolls. It is designed so that it can come into contact with the outer circumferential tapered portions of the rolls 2 and 5 at a substantially right angle.

The strip S is gripped with the width end side bent by the cylindrical gap and the tapered gap of the upper and lower presser rolls 2 and 5, and the vertical roll 7 applies a rolling force to the width edge part to perform width reduction.

The strip S is compressed by the vertical roll 7 in the direction of the arrow, but the tapered portions of the upper and lower pressing rolls 2 and 5 outside the gripping force act as resistance, so the compressive force at the center in the width direction of the strip is not so great. It doesn't get bigger. Therefore, even if a large width reduction is applied to the strip S when the gripping force of the upper and lower presser rolls 2 and 5 is low, the strip 7 will not buckle.

FIG. 2 shows another embodiment of the present invention, in which the vertical roll 7 is made into a cylindrical shape and the axis of the vertical roll 7 is inclined. Even with such a configuration, the compressive force at the center in the width direction of the strip is small, so even if the gripping force of the upper and lower presser rolls 2 and 5 is small, the strip will not buckle.

In addition, in the embodiment of the present invention, a case has been described in which the tapered part of the upper presser roll is gradually thickened toward the vertical roll, and the tapered part of the lower presser roll is gradually narrowed toward the vertical roll. The tapered part may be gradually made thinner toward the vertical roll, and the tapered part of the lower presser roll may be gradually thickened toward the vertical roll, or the drum-shaped roll and large drum-shaped roll may be combined, and the lower presser roll can be raised and lowered. It goes without saying that the upper presser roll may be fixed, or that both the upper and lower presser rolls may be moved up and down, and that various other changes may be made without departing from the gist of the present invention. .

[Effect of idea]

According to the edger of the present invention, the strip can be reliably gripped even if the gripping force of the upper and lower presser rolls is small, and therefore buckling of the strip due to width reduction can be prevented, and the device can be made compact. , etc., can produce various excellent effects.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of one embodiment of the edger of the present invention, FIG. 2 is an explanatory diagram of another embodiment of the edger of the present invention, and FIG. 3 is an explanatory diagram of a conventional edger. In the figure, 2 is the upper presser roll, 5 is the lower presser roll, and 7
indicates a vertical roll.

Claims (1)

[Scope of utility model registration request] An edger in which the width end sides of the strip are gripped by upper and lower press rolls and the width is rolled down by vertical rolls, characterized in that the outer peripheries of the vertical roll sides of the upper and lower press rolls are tapered in opposite directions.