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Apparatus and method for twisting hollow rods

A technology of hollow and twisted sleeves, applied in the field of slotted rod devices, which can solve problems such as lack of resistance and difficulty in cross-sectional shape

Inactive Publication Date: 2003-03-26
KENNEY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of the lack of resistance against each side of the slit during twisting, it generally warps along the slit, making it difficult to maintain the cross-sectional shape of the rod

Method used

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  • Apparatus and method for twisting hollow rods
  • Apparatus and method for twisting hollow rods
  • Apparatus and method for twisting hollow rods

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Embodiment Construction

[0030] The present invention provides an apparatus and method for twisting a pair of hollow, slotted rods nested together. Each of the first and second jaws is designed to have male and female features for engaging the inner and outer surfaces of the respective ends of the nested pair of rods. Since the two ends of the paired rods are engaged in such a state, the torsion is basically carried out on the entire length of the paired rods, neither causing the paired rods to warp along the slit, nor causing the formed parts to twist due to torsional stress. Deform both ends of the rod. After twisting, the telescoping function of the twisted paired rods still remains. In particular, the invention can also be used to twist single hollow rods, with or without slots.

[0031] Precise twisting is preferably accomplished with automatic control, stopping the stepper motors when the amount of twist produced on the paired rods is substantially equal to a preset amount. The automatic cont...

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PUM

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Abstract

Apparatus and methods for uniformly twisting hollow, open-seam rods is disclosed.The twist extends throughout substantially the entire length of the rod. This feature enables a telescoped pair of rods, that is, a pair of rods with an inner rod dimensioned to slide into and out of an outer rod, to be twisted simultaneously such that the telescoping feature is maintained after twisting. The apparatus includes a rotatable first chuck and a substantially non-rotatable second chuck. Each chuck has male and female components to engage the inner and outer surfaces of a respective end of the rod. Sensor controls ensure uniform twisting and controlled unwinding of the rods. The controls are programmable and accommodated.

Description

technical field [0001] The present invention relates to an apparatus and method for twisting hollow rods, and more particularly, the present invention relates to an apparatus and method for evenly twisting hollow nested pairs of slotted rods having a preferably rectangular cross-section. A nested pair of rods has an inner rod sized to slide in and out of an outer rod. Background technique [0002] The market for home decor products is becoming more competitive with large retail outlets and an increasing number of products to choose from. Therefore, unique, practical and aesthetically pleasing new products are becoming more and more important. To be viable, these new products must be reasonably and competitively priced, and therefore economically manufactured. [0003] One such new product is a lightweight, strong, uniformly twisted curtain rod with a rectangular cross-section. This product is unique due to its telescoping feature; despite its twisted shape, its inner rod ...

Claims

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Application Information

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IPC IPC(8): B21D11/14
CPCB21D11/14Y10T29/49911
Inventor 基思·M·毕比罗伯特·H·赫斯福特约翰·萨瑞特理查德·A·罗斯
Owner KENNEY MFG
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