Suction apparatus for removing fiber material in a bale opener

In a fiber bale opener including a truck arranged for back-and-forth movement along a traveling path, an opening mechanism carried by said truck for removing fiber material from fiber bales and a suction apparatus including a stationary suction duct having a length extending in the direction of said traveling path and a throughgoing slot on one side thereof, extending parallel to said length, a flexible cover belt extending over said slot for sealing the inside of said duct from the environment, said cover belt defining an interstice within said truck;

• said interstice traveling with said truck and providing a passage for the fiber-like material to pass inside of said suction duct;
• a deflection means mounted on said truck at the interstice;
• said cover belt being positioned above said slot and being guided around said deflection means;
• said cover belt having one end fixed at one end of said traveling path;
• the improvement comprising a winding and unwinding device situated at a distance from said deflection means;
• said device including a core around which said cover belt can be wound;
• said cover belt having a length portion extending from said deflection means to said device and being connected to said core.

In a fiber bale opener including a truck arranged for back-and-forth movement along a traveling path, an opening mechanism carried by said truck for removing fiber material from fiber bales and a suction apparatus including a stationary suction duct having a length extending in the direction of said traveling path and a throughgoing slot on one side thereof, extending parallel to said length, a flexible cover belt extending over said slot for sealing the inside of said duct from the environment, said cover belt defining an interstice traveling with said truck and providing a passage for the fiber-like material to pass inside of said suction duct;

• said cover belt being positioned above said slot and having one end fixed at one end of said traveling path;
• the improvement comprising a winding and unwinding device traveling with said truck;
• said device including a core around which said cover belt can be wound;
• said cover belt being connected to said core.

In a fiber bale opener including a truck arranged for back-and-forth movement along a traveling path, an opening mechanism carried by said truck for removing fiber material from fiber bales and a suction apparatus including a stationary suction duct having a length extending in the direction of said traveling path and a throughgoing slot on one side thereof, extending parallel to said length, a flexible cover belt extending over said slot for sealing the inside of said duct from the environment, said cover belt defining an interstice traveling with said truck and providing a passage for the fiber-like material to pass inside of said suction duct;

• said cover belt being positioned above said slot and having one end fixed at one end of said traveling path;
• the improvement comprising a winding and unwinding device;
• said device being stationarily supported, whereby said truck, upon travel thereof, moves towards or away from said device;
• said device including a core around which said cover belt can be wound;
• said cover belt being connected to said core.