Opening apparatus of fiber bundle

Abstract

An opening apparatus of a fiber bundle includes a horizontal vibration device including a plurality of horizontal vibration rolls to apply horizontal direction vibration to the fiber bundle according to a type of the fiber bundle, where the plurality of horizontal vibration rolls have different shapes. In the opening apparatus, the opening efficiency of the fiber bundle may be increased by applying horizontal vibrations to the fiber bundle through the plurality of horizontal vibration rolls according to a type of the fiber bundle.

What is claimed is: 
     
         1 . An opening apparatus of a fiber bundle, comprising
 a horizontal vibration device including a plurality of horizontal vibration rolls configured to apply horizontal direction vibration to the fiber bundle according to a type of the fiber bundle,   wherein the horizontal vibration rolls have different shapes.   
     
     
         2 . The opening apparatus of  claim 1 , wherein one of the plurality of horizontal vibration rolls comprises a first horizontal vibration roll having a cylindrical shape in which a diameter becomes gradually reduced in a direction of an exterior circumference from a center thereof. 
     
     
         3 . The opening apparatus of  claim 2 , wherein another of the plurality of horizontal vibration rolls comprises a second horizontal vibration roll having a cylindrical shape in which a diameter becomes gradually reduced in a direction of an exterior circumference from a center thereof. 
     
     
         4 . The opening apparatus of  claim 3 , wherein another of the plurality of horizontal vibration rolls comprises a third horizontal vibration roll having a cylindrical shape having a same diameter. 
     
     
         5 . The opening apparatus of a fiber bundle of  claim 4 , wherein another of the plurality of horizontal vibration rolls comprises a fourth horizontal vibration roll having a cylindrical shape having a same diameter and including protrusions and depressions formed at an exterior circumference of the fourth horizontal vibration roll. 
     
     
         6 . The opening apparatus of  claim 5 , wherein when the fiber bundle is a carbon fiber, the horizontal direction vibration is applied to the fiber bundle in an order of the first horizontal vibration roll, the second horizontal vibration roll, and the third horizontal vibration roll. 
     
     
         7 . The opening apparatus of  claim 6 , wherein a curvature radius of an exterior circumference of the second horizontal vibration roll is greater than a curvature radius of an exterior circumference of the first horizontal vibration roll. 
     
     
         8 . The opening apparatus of  claim 5 , wherein when the fiber bundle is a glass fiber, the horizontal direction vibration is applied to the fiber bundle in an order of the third horizontal vibration roll, the first horizontal vibration roll, and the fourth horizontal vibration roll. 
     
     
         9 . The opening apparatus of  claim 1 , further comprising a width controller provided at a lower stream region of the horizontal vibration device to control a width of the fiber bundle. 
     
     
         10 . The opening apparatus of  claim 9 , wherein
 the width controller comprises:   a bottom plate;   guide walls provided at both sides of the bottom plate to guide the fiber bundle, respectively; and   guide plates coupled with the guide walls by a hinge, respectively.   
     
     
         11 . The opening apparatus of  claim 10 , wherein the width controller further comprises a ruler to display an open amount of the guide plate. 
     
     
         12 . The opening apparatus of  claim 1 , further comprising a horizontal vibration device provided at an upper stream region of the horizontal vibration device to apply the horizontal direction vibration to the fiber bundle. 
     
     
         13 . The opening apparatus of  claim 12 , further comprising an air supply device provided at the upper stream region of the horizontal vibration device to blow compressed air into the fiber bundle. 
     
     
         14 . The opening apparatus of  claim 13 , wherein the air supply device comprises:
 an air blower to generate compressed air; and   an air control valve to control an air amount of the air blower.