US 6,712,196 B2Granted

Empty bag supplying apparatus and a product-filled bag extraction apparatus in a continuous conveying type bag-filling packaging machine

AssigneeToyo Jidoki Co., Ltd.

InventorsIwao Ikemoto, Shoichi Koga

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Abstract

An empty bag supplying apparatus used in a continuous conveying type bag-filling packaging machine in which the empty bag supplying apparatus receives empty bags and transfers these empty bags to gripper pairs of the bag-filling packaging machine that are moved continuously at a constant speed. The empty bag supplying apparatus includes downward-facing bag holding members and a reciprocating movement mechanism. The bag holding members hold the upper portions of bags. The reciprocating movement mechanism causes the bag holding members to reciprocate along an arc-shaped path and keeps the empty bags held by the holding members to be parallel to the direction of movement of the gripper pairs during the reciprocating motion. In a bag transfer region established in the arc-shaped path path, the speed of the bag holding members holding the empty bags is equal to the moving speed of the gripper pairs.

Claims6

Dependent claims

An empty bag supplying apparatus in a continuous conveying type bag-filling packaging machine wherein said empty bag supplying apparatus receives empty bags that are positioned in a vertical attitude with mouths of said bags facing upward and transfers said bags to respective gripper pairs of said continuous conveying type bag-filling packaging machine, said gripper pairs being moved continuously at a constant speed and at a uniform spacing and gripping both side edges of said bags by means of gripping sections thereof and conveying said bags in a vertically suspended fashion;

and wherein:
said empty bag supplying apparatus is comprised of:
downward-facing bag holding members which open and close at a specified timing so as to hold upper portions of said bags when closed,
a reciprocating movement mechanism which causes said bag holding members to perform a reciprocating motion along an arc-shaped path on a horizontal plane and which causes said bags held by said bag holding members to be set substantially parallel to a direction of movement of said gripper pairs at all times, and
a bag transfer region that is established at an intermediate point on said arc-shaped path, said arc-shaped path substantially overlapping a movement path of said gripping sections of said gripper pairs within said bag transfer region, and a speed of said reciprocating motion of said bag holding members in a direction of movement of said gripper pairs being set to be substantially equal to a moving speed of said gripper pairs at least within said bag transfer region.

2 more elements

A product-filled bag extraction apparatus in a continuous conveying type bag-filling packaging machine wherein said product-filled bag extraction apparatus receives product-filled bags, upon which packaging treatment has been completed, from respective gripper pairs of said bag-filling packaging machine and then discharges said product-filled bags to an outside of an movement path of said gripper pairs, said gripper pairs being moved continuously at a constant speed and at a uniform spacing and gripping both side edges of said bags by means of gripping sections thereof and conveying said bags in a vertically suspended fashion;

and wherein:
said product-filled bag extraction apparatus is comprised of:
downward-facing bag holding members which open and close at a specified timing so as to hold upper portions of said bags when closed,
a reciprocating movement mechanism which causes said bag holding members to perform a reciprocating motion along an arc-shaped path on a horizontal plane and which causes said bags held by said bag holding members to be set substantially parallel to a direction of movement of said gripper pairs at all times, and
a bag receiving region that is established at an intermediate point on said arc-shaped path, said arc-shaped path substantially overlapping a movement path of said gripping sections of said gripper pairs within said bag receiving region, and a speed of said reciprocating motion of said bag holding members in a direction of movement of said gripper pairs being set to be substantially equal to a moving speed of said gripper pairs at least within said bag receiving region.

2 more elements

Dependencies are inferred from the claim text.