Recycled carbon fiber nonwoven fabric manufacturing system including chute carding machine

Abstract

Disclosed is a chute carding machine used in a recycled carbon fiber nonwoven fabric manufacturing system, wherein the chute carding machine includes a main chamber oriented in a vertical direction and having an inner space formed therein, a mixed raw material introduction unit is installed at the uppermost part of an inner space of the main chamber, a first carding unit is installed under the mixed raw material introduction unit, a second carding unit is installed under the first carding unit, and a web shaping unit is installed under the second carding unit.

What is claimed is: 
     
         1 . A recycled carbon fiber nonwoven fabric manufacturing system is configured such that:
 a resin, which becomes a raw material for regenerated carbon fiber nonwoven fabric, is weighed and fed into a first weighing hopper, and the resin fed into the first weighing hopper is primarily scutched in the first weighing hopper;   recycled carbon fiber (RCF), which is mixed with the resin and becomes the raw material for the recycled carbon fiber nonwoven fabric, is weighed and fed into a second weighing hopper, and the recycled carbon fiber (RCF) fed into the second weighing hopper is also primarily scotched in the second weighing hopper;   the resin and the recycled carbon fiber (RCF) that have passed through the first weighing hopper and the second weighing hopper, respectively, are fed into and mixed by a scutcher such that the resin and the recycled carbon fiber (RCF) are mixed into a mixed raw material, and the mixed raw material is secondarily scutched by the scutcher;   the mixed raw material secondarily scutched by the scutcher is transferred to a door opener so as to be opened;   the mixed raw material opened by the door opener is transferred to a mixing tank so as to be further mixed therein;   the mixed raw material mixed in the mixing tank is transferred to a chute carding machine so as to be further processed thereby;   the mixed raw material transferred to the chute carding machine is carded into a web by a carding means disposed in an upper part of a main chamber of the chute carding machine;   the web is dropped to a web shaping unit disposed vertically under the carding means and laminated thereon into an initial nonwoven fabric, which is a web laminate;   the initial nonwoven fabric, which is the web laminate, is transferred into an upper punching machine, and is processed by the upper punching machine, which punches the initial nonwoven fabric up and down a plurality of times;   the initial nonwoven fabric processed by the upper punching machine is transferred into a lower punching machine, and is processed by the lower punching machine, which punches the initial nonwoven fabric up and down a plurality of times, whereby nonwoven fabric is manufactured;   the chute carding machine comprises an introduction chamber to which a mixed raw material feeding pipe is connected so as to communicate therewith;   a mixed raw material storage unit configured to temporarily store the mixed raw material is formed in the introducing chamber;   a mixed raw material transfer regulator is installed in a lower part of the mixed raw material storage unit, and a weight sensor configured to sense a weight of the mixed raw material passing through the mixed raw material transfer regulator is installed in the mixed raw material transfer regulator;   the carding means comprises a first carding unit;   the first carding unit comprises:   a pair of first feed rollers configured to rotate in opposite directions; and   a pair of first carding rollers installed vertically under the pair of first feed rollers;   one end of a first die spring is coupled to a bracket coupled to one of the pair of first carding rollers to support the first carding rollers;   the other end of the first die spring is coupled to a mixed raw material transfer duct, and the mixed raw material transfer duct is coupled to the main chamber;   the pair of first feed rollers and the pair of first carding rollers are operated by power from a first feed carding roller motor;   the pair of first feed rollers has the same diameter;   the pair of first carding rollers has the same diameter; and   the web shaping unit comprises:   a mesh net rotating motor;   an endless mesh net configured to be circularly moved by rotational force of the mesh net rotating motor;   a part of the mesh net that is circularly moved having a horizontal surface;   a drafter roller configured to rotate about a roller rotation axis at a fixed position in contact with an upper surface of the web laminate laminated on the horizontal surface of the mesh net; and   a blowing intake passage formed continuously along a bottom of the horizontal surface of the mesh net, wherein   air in the blowing intake passage is discharged out of the blowing intake passage by a blower connected to the blowing intake passage so as to communicate therewith, thereby negatively pressurizing the bottom of the mesh net such that the web laminate laminated on the horizontal surface of the mesh net is adsorbed on an upper surface of the mesh net.   
     
     
         2 . The recycled carbon fiber nonwoven fabric manufacturing system according to  claim 1 , wherein
 a roller rotating shaft is formed on left and right axial centers of the drafter roller so as to protrude therefrom;   the roller rotating shaft is rotatably coupled to a roller support bar;   a support hole configured to support the roller rotating shaft is formed in one end of the roller support bar;   a plurality of height adjustment holes is formed in the other end of the roller support bar; and   a bolt is inserted into a specific one of the height adjustment holes of the roller support bar such that the roller support bar can be fastened to a support frame, whereby a height of the drafter roller is adjusted.   
     
     
         3 . The recycled carbon fiber nonwoven fabric manufacturing system according to  claim 2 , wherein
 a motor is installed on a motor installation frame outside the mixed raw material feeding pipe so as to shake the mixed raw material feeding pipe;   a cam configured to convert a rotating motion of the motor into a shaking motion is installed on a rotating shaft of the motor;   a through-shaft is installed through the mixed raw material feeding pipe;   a first fixing bolt is fastened to one end of the through-shaft;   a second fixing bolt is fastened to the other end of the through-shaft; and   the through-shaft protruding outwardly of the first fixing bolt and the cam are connected to each other via a connecting bar.