Fluid-controlled wire tension mechanism

Abstract

The present invention relates to a fluid-controlled wire tension mechanism including a sealed container, a control valve, and a delivery spool. The sealed container has a space. The control valve is coupled to the sealed container to control fluid pressure in the space. The delivery spool is coupled to the sealed container with a compression end and a reel. The compression end is placed in the space, and the reel is located outside the sealed container to send out a cutting wire. Wherein, a fluid enters the space and applies pressure on the compression end. The present invention utilizes the fluid pressure to produce the rotating impedance to the delivery spool, so that the component is wear-proof, the line tension is easily controlled and the stream of the cutting wire can be stable for a long time. Therefore, the cutting effect and the shape are more precise.

What is claimed is: 
     
         1 . A fluid-controlled wire tension mechanism, adapted to control a tension of a cutting wire by adjusting a fluid pressure generated by a fluid, comprising:
 a sealed container, having a space for containing the fluid;   a control valve, coupled to the sealed container to adjust the fluid pressure in the space; and   a delivery spool, coupled to the sealed container, the delivery spool having a compression end and a reel, the compression end being configured in the space and linked with the reel, and the reel being configured outside of the sealed container to send the cutting wire;   wherein the tension of the cutting wire is controlled by a fluid damping force corresponding to the fluid pressure applied to the compression end.   
     
     
         2 . The fluid-controlled wire tension mechanism of  claim 1 , wherein the fluid is liquid or gas, and the cutting wire is a metal wire. 
     
     
         3 . The fluid-controlled wire tension mechanism of  claim 1 , further comprising a disk configured on the compression end of the delivery spool to bear the fluid pressure. 
     
     
         4 . The fluid-controlled wire tension mechanism of  claim 1 , further comprising a collecting spool configured to receive the cutting wire, wherein delivery spool is configured to control the tension of the cutting wire, and the collecting spool is configured to control a move speed of the cutting wire. 
     
     
         5 . The fluid-controlled wire tension mechanism of  claim 1 , wherein the cutting wire is wound on the reel, and the reel is detachably coupled to the compression end. 
     
     
         6 . The fluid-controlled wire tension mechanism of  claim 1 , wherein the sealed container further comprises a diversion hole, and the fluid flows into the space via the diversion hole. 
     
     
         7 . The fluid-controlled wire tension mechanism of  claim 6 , wherein the sealed container further comprises an O-ring, a sealing cap and a sealing housing, the sealing housing has the diversion hole; the sealing cap and the sealing housing are sealed by the O-ring to form the space. 
     
     
         8 . The fluid-controlled wire tension mechanism of  claim 7 , wherein the sealed container further comprises a bearing, and the delivery spool is coupled to the sealing cap by the bearing. 
     
     
         9 . The fluid-controlled wire tension mechanism of  claim 1 , further comprising a plurality of delivery spools, wherein the plurality of delivery spools are parallel to each other to form a array, and each of the plurality of delivery spools sends a corresponding cutting wire and controls the tension of the corresponding cutting wire. 
     
     
         10 . The fluid-controlled wire tension mechanism of  claim 1 , wherein the control valve is configured to control a total amount of the fluid in the space, an inflow rate of the fluid into the space, an inflow pressure of the fluid into the space, or a volume of the space.