Apparatus for molding fibrous material

Abstract

Disclosed is an apparatus for molding a fibrous material . .mainly containing waste paper.!., in which a fibrous material . .mainly containing waste paper.!. is thrown into a cylindrical cylinder from a raw material throwing port, being fed to the leading edge of the cylindrical casing by the feeding action of a rotary screw provided in the cylindrical casing, and discharged from the leading edge, the apparatus comprising: a molding/discharging member provided at the leading edge of the cylindrical casing for compressing the fibrous material fed to the leading edge of the casing into a specified shape and discharging the compressed fibrous material.

What is claimed is: 
     
       1. An apparatus for molding a fibrous material . .mainly containing waste paper.!. comprising: a cylindrical casing having an inner surface, a raw material throwing port and a leading edge;   a rotary screw provided on a rotational shaft in said cylindrical casing for feeding fibrous raw material to be discharged from said leading edge;   a molding/discharging member provided at the leading edge of said cylindrical casing for compressing said fibrous material fed to the leading edge of said casing into a specified shape and discharging said compressed fibrous material, said molding/discharging member comprising a molding die having at least one discharge hole,   wherein the diameter of said at least one discharge hole is from 10 to 40% of the diameter of said rotary screw.   
     
     
       2. An apparatus for molding a fibrous material according to claim 1, wherein said molding/discharging member is provided with a supporting mechanism for rotatably supporting a leading edge of said rotary screw. 
     
     
       3. An apparatus for molding a fibrous material according to claim 2, wherein said rotary screw is formed such that a screw pitch thereof becomes smaller continuously or stepwise in the direction approaching the leading edge of said rotary screw. 
     
     
       4. An apparatus for molding a fibrous material according to claim 2, wherein said rotary screw is formed such that a groove depth of said screw becomes narrower continuously or stepwise in the direction approaching the leading edge of said rotary screw. 
     
     
       5. An apparatus for molding a fibrous material according to claim 1 or 2, wherein a liquid injection mean is provided at said raw material throwing port or a barrel wall of said cylindrical casing. 
     
     
       6. An apparatus for molding a fibrous material according to claim 1 or 2, wherein a cutter rotatable in synchronization with said rotary screw is provided directly before said molding/discharging member within said cylindrical casing. 
     
     
       7. An apparatus for molding a fibrous material according to claim 1 or 2, wherein a cutting means is provided outside the leading edge of said casing for cutting said fibrous material molded and discharged. 
     
     
       8. The apparatus of claim 1 wherein the inner surface of said cylindrical casing is from with a plurality of linear grooves extending parallel to the rotational shaft of said rotary screw. 
     
     
       9. An apparatus for molding a fibrous material . .mainly containing waste paper.!. comprising: a cylindrical casing having an inner surface, a raw material throwing pat and a leading edge;   a rotary screw provided on a rotational shaft in said cylindrical casing for feeding fibrous raw material to be discharged from said leading edge;   a molding/discharging member provided at the leading edge of said cylindrical casing for compressing said fibrous material fed to the leading edge of said casing into a specified shape and discharging said compressed fibrous material, said rotational shaft being rotationally supported at said leading edge,   wherein the cross-section of said cylindrical casing adjacent said leading edge becomes smaller in the direction approaching said leading edge to define a restricting structure, and where said rotary screw does not extend into said restricting structure, thereby defining a cavity in said restricting structure between said leading edge and said rotary screw, and   wherein said molding/discharging member comprises a molding die having at least one discharge hole and the diameter of said at least one discharged hole is from 10 to 40% of the diameter of said rotary screw.   
     
     
       10. The apparatus of claim 9 wherein the inner surface of said cylindrical casing is formed with a plurality of linear grooves extending parallel to the rotational shaft of said rotary screw.