Continuous delivery apparatus for work material

Abstract

A continuous delivery apparatus for continuously feeding a lengthy work material wound into an approximately ring-like form to a press or the like. This apparatus comprises a rotatable turn-table on which wound material is placed so that an axis of the material is crossed perpendicular to the turn-table, a motor for rotating and driving the turn-table, and a swing arm, one end of which is supported on a rotating shaft whereas the other end thereof is pivotable from a center of the wound work material to an outer peripheral direction, said swing arm being always biased in an outer peripheral direction. The swing arm which is pivotally moved with a change in wound amount of work material is removed as an amount of rotation of the rotating shaft, said amount of rotation controlling the rotational speed of a motor to deliver work material at a constant speed at all times.

What is claimed is: 
     
       1. A continuous delivery apparatus for work material for continuously delivering a wound work material to a working machine, comprising a rotating support device comprising a rotatable turn-table on which the wound work material is placed so that an axis of said material is vertically disposed and perpendicular to said turn-table and a motor for rotating and driving said turn-table; and a control device comprising a detecting member positioned above the turn-table, means supporting a portion of said detecting member for movement above and in a generally radial direction from the center of the wound work material toward the outer periphery thereof, said portion being engaged with the outer end of the wound work material so that said end is pulled across the wound work material in a radial direction thereof, a biasing device for continuously biasing said portions of said detecting member in said generally radial direction from the center of the wound work material toward the outer periphery thereof; and a speed setting device for setting the rotating speed of the motor in response to movement of said supporting portion. 
     
     
       2. A continuous delivery apparatus according to claim 1, wherein said detecting member comprises a swing arm, one end of which carries said portion and which is pivotally moved up and down relative to said wound work material, and a rotating shaft which is mounted on the other end of said swing arm and rotated by pivotal movement of said swing arm, said speed setting device being actuated in response to the rotation of said rotating shaft. 
     
     
       3. A continuous delivery apparatus according to claim 1, wherein said detecting member comprises a swing member, one end of which defines said portion and which is horizontally pivotally moved on said wound work material, and a conversion member mounted on the other end of said swing member to convert the pivotal movement of said swing member into rotational movement, said speed setting device being actuated by the rotation of said conversion member. 
     
     
       4. A continuous delivery apparatus according to claim 2, wherein said speed setting device comprises a rotary type variable resistor having a rotatable shaft, sprockets mounted on said rotating shaft and the rotatable shaft of said variable resistor, and an endless chain belt stretched over said two sprockets. 
     
     
       5. A continuous delivery apparatus according to claim 3, wherein said conversion member comprises a chain belt, one end of which is mounted on said other end of said swing member and the other end of which is mounted vertically movably up and down relative to said work material, and a sprocket engaging said chain belt. .Iadd. 
     
     
       6.  Apparatus for delivering a wound work material to a work machine, the apparatus including: rotatable table means on which the wound work material is intended to be placed, with an axis of the wound work material to be vertically disposed and perpendicular to the table means, said table means being in a generally horizontal plane;   variable speed motor means for rotating said rotatable table;   work engaging means supported at an elevated location with respect to said table means and being adapted for engagement by the work material at a location higher than the wound work material on said table when the work material is drawn toward the work machine, said work engaging means being movable above the plane of said table means in a generally vertical arc of movement in response to forces imposed directly on said work engaging means by an open loop of the work material passing over said work engaging means;   means for biasing said work engaging means toward a first position, said work engaging means being progressively moved by the engaged work material from said first position toward a second position as the amount of wound work material on said table decreases; and   speed control means responsive to the movement of said work engaging means to vary the speed of rotation of said table means in response to movement of said work engaging means in accordance with changes in diameter of the wound work material. .Iaddend. .Iadd.   
     
     
       7.  Delivery apparatus as in claim 6 including: swing arm means connected to said work engaging means, and horizontally disposed rotatable support means to which said swing arm means is connected;   said rotatable support means and said swing arm means being moved in response to movement of said work engaging means whereby said rotatable support means is rotated in a predetermined direction in response to the decrease in the amount of wound work material on said rotatable table means; and   said rotatable support means being operatively connected to said speed control means. .Iaddend. .Iadd.8. The delivery apparatus of claim 7 wherein:   said swing arm means is disposed in a generally vertical plane with respect to the plane of said rotatable table means. .Iaddend. .Iadd.9. The delivery apparatus of claim 8 wherein:   said swing arm means is movable in said generally vertical plane. .Iaddend. .Iadd.10. The delivery apparatus of claim 6 wherein:   the speed of said motor means is varied as a function of the amount of work   
     
     
        material remaining on the work table. .Iaddend. .Iadd.11.  Apparatus for delivering a wound work material to a work machine, the apparatus including: rotatable table means on which the wound work material is intended to be placed, said table means being in a generally horizontal plane;   variable speed motor means for rotating said rotatable table;   work engaging means supported at an elevated location with respect to said table means and being adapted for engagement by the work material at a location higher than the wound work material on said table when the work material is drawn toward the work machine, said work engaging means being movable above the plane of said table means in response to forces imposed directly on said work engaging means by an open loop of the work material;   means for biasing said work engaging means toward a first position, said work engaging means being progressively moved by the engaged work material from said first position toward a second position as the amount of wound work material on said table decreases; and   speed control means responsive to the movement of said work engaging means to vary the speed of rotation of said table means in response to movement of said work engaging means in accordance with changes in diameter of the   
     
     
        wound work material. .Iaddend. .Iadd.12.  Delivery apparatus as in claim 11 wherein said work engaging means includes: swing arm means, and horizontally disposed rotatable support means coupled to said swing arm means;   said rotatable support means and said swing arm means being moved in response to movement of said work engaging means whereby said rotatable support means is rotated in a predetermined direction in response to the decrease in the amount of wound work material on said rotatable table means; and   said rotatable support means being operatively connected to said speed control means. .Iaddend. .Iadd.13. The delivery apparatus of claim 12 wherein:   said swing arm means is disposed in a generally vertical plane with respect to the plane of said rotatable table means. .Iaddend. .Iadd.14. The delivery apparatus of claim 13 wherein:   said swing arm means is movable in said generally vertical plane. .Iaddend. .Iadd.15. The delivery apparatus of claim 11 wherein:   the speed of said motor means is varied as a function of the amount of work   
     
     
        material remaining on the work table. .Iaddend. .Iadd.16.  An apparatus for delivering a wound work material to a work machine at a constant material delivery speed, comprising: generally horizontal rotatable table means for rotating a wound work material placed thereon;   variable speed motor means coupled to said rotatable table means for driving said rotatable table means at variable speed;   movable work material supporting means disposed at an elevated location with respect to said rotatable table means for movably supporting a part of the work material as the work material is unwound and drawn toward the work machine, means for biasing said supporting means toward a first position relative to said table means said supporting means being moved toward a second position relative to said table means in response to forces imposed directly on said supporting means by an open loop of the work material to generate a rotating signal; and   control means coupled to said movable work material supporting means for controlling said variable speed motor means in response to said rotary signal of said movable work material supporting means to progressively increase rotation speed of said rotatable table means as a diameter of the wound work material remaining on said rotatable table means decreases.   
     
     
        .Iaddend. .Iadd.17.  The apparatus of claim 16, wherein said movable work material supporting means comprises: rotatable rod means extending over said rotatable table means;   swing arm means, swingably coupled to said rotatable rod means, for swingably supporting the unwound work material; and   said biasing means being swing arm biasing means coupled to said swing arm means for biasing said swing arm means toward said first position, said swing arm means being progressively moved by the work material from said first position toward said second position as the amount of the wound work material remaining on said rotatable table means decreases. .Iaddend. .Iadd.18. The apparatus as set forth in claim 17, wherein said control means comprises:   angular position detecting means, coupled to said rotatable rod means, for detecting angular positions of said rotatable rod means rotated when said swing arm means is progressively moved by the wound work material from said first position toward said second position; and   motor speed control means, coupled to said angular position detecting means, for controlling said variable speed motor means in response to detected angular positions of said rotatable rod means. .Iaddend.   
     
     
        .Iadd.     A continuous delivery apparatus for work material for continuously delivering a wound work material to a working machine, comprising a rotating support device comprising a rotatable turn-table on which the wound work material is placed so that an axis of said material is vertically disposed and perpendicular to said turn-table and a motor for rotating and driving said turn-table; and a control device comprising a detecting member positioned above the turn-table, means supporting a portion of said detecting member for movement above and in a generally radial direction between the center of the wound work material and the outer periphery thereof, a biasing device for continuously biasing said portions of said detecting member in said generally radial direction from the center of the wound work material toward the outer periphery thereof; said portion of said detecting member being engaged with the outer end of the wound work material so that said end is pulled across the wound work material to move said detecting member in a generally radial direction from the outer periphery of the work material toward the center thereof; and a speed setting device for setting the rotating speed of the motor in 
     
     
        response to movement of said supporting portion. .Iaddend. .Iadd.20.  A continuous delivery apparatus according to claim 19, wherein said detecting member comprises a swing arm, one end of which carries said portion and which is pivotally moved up and down relative to said wound work material, and a rotating shaft which is mounted on the other end of said swing arm and rotated by pivotal movement of said swing arm, said speed setting device being actuated in response to the rotation of said rotating shaft. .Iaddend. .Iadd.21. A continuous delivery apparatus according to claim 19, wherein said detecting member comprises a swing member, one end of which defines said portion and which is horizontally pivotally moved on said wound work material, and a conversion member mounted on the other end of said swing member to convert the pivotal movement of said swing member into rotational movement, said speed setting device being actuated by the rotation of said conversion member. .Iaddend. .Iadd.22. A continuous delivery apparatus according to claim 20, wherein said speed setting device comprises a rotary type variable resistor having a rotatable shaft, sprockets mounted on said rotating shaft and the rotatable shaft of said variable resistor, and an endless chain belt 
     
     
        stretched over said two sprockets. .Iaddend. .Iadd.23.  A continuous delivery apparatus according to claim 21, wherein said conversion member comprises a chain belt, one end of which is mounted on said other end of said swing member and the other end of which is mounted vertically movably up and down relative to said work material, and a sprocket engaging said chain belt. .Iaddend.