초록 ▼

An automatic bag tying apparatus for converting an open bag loosely holding a substance into a tight package. A first gripping assembly tightly grips the unsealed bag toward its mouth. A second gripping assembly loosely and slidably grips the unsealed bag to form a neck. A displacement assembly disp

An automatic bag tying apparatus for converting an open bag loosely holding a substance into a tight package. A first gripping assembly tightly grips the unsealed bag toward its mouth. A second gripping assembly loosely and slidably grips the unsealed bag to form a neck. A displacement assembly displaces the gripping means relative to each other to cause the gripping means to move apart until the substance stops against the second gripping means. Bag closure applying apparatus then applies a closure to the bag in close proximity to the substance to create the final, closed, tight package. The tying apparatus further includes a guide assembly, and the gripping assemblies open sufficiently wide to allow passage of the bag and product therethrough which enables gravity loading of the apparatus. Tightening of the bag about the product is also controlled by pressure sensing apparatus to prevent over-tensioning of the bag.

대표청구항 ▼

An automatic bay tying apparatus formed to produce a tight package from a bag loosely containing a substance therein, the apparatus including first gripping means formed to tightly grip the bag proximate an open end thereof, second gripping means formed to slidably engage the bag intermediate the fi

An automatic bay tying apparatus formed to produce a tight package from a bag loosely containing a substance therein, the apparatus including first gripping means formed to tightly grip the bag proximate an open end thereof, second gripping means formed to slidably engage the bag intermediate the first gripping means and the substance and formed to constrict the bag to form a neck, displacement means formed and coupled to produce relative displacement between the first gripping means and the second gripping means to cause sliding of the bag with respect to the second gripping means until the neck is positioned immediately proximate the substance, and closure applying means formed to apply a bag closure to the bag closely proximate the neck, wherein the improvement in the bag typing apparatus comprises: bag guiding and support means formed to receive the bag and substance from a bag loading apparatus and formed to support the bag and substance in a position for gripping by the first and second gripping means; the first and second gripping means each including means mounting said gripping means for movement between an open position permitting movement of the bag and product from the bag loading apparatus to the bag guiding and support means and the closed position gripping the bag; means for automatically actuating the first gripping means and the second gripping means to cause movement from the open position to the closed position when the bag and substance are supported on the bag guiding and support means; and the displacement means further having pressure sensing means formed to terminate relative displacement of the gripping means upon sensing of a predetermined pressure between the second gripping means and the bag and substance and formed to actuate the closure applying means to apply a bag closure upon sensing of the predetermined pressure.