Apparatus for Transporting Bags for Bag Forming and Filling Machines

Abstract

Transportation apparatus for machines for filling bags (1) with bulk material (2), comprising at least one station (F) for forming the bag (1), at least one station (R) for filling the bag with the material (2), provided with fixed bag gripping means (112,112a), at least one station (S) for sealing the mouth (1a) of the bag and at least one apparatus for transporting the bags from one station to the other station (F,R,S) in a feeding direction (X-X), said apparatus comprising two pairs of the arms (510,1510) which are symmetrically arranged with respect to the direction (X-X) of feeding of the bag and each carry respective pairs of means (514) for gripping the sides (1c) of the bag (1), said pairs of arms (510,1510) being formed by levers (511,1511) which are kinematically connected together in a pantograph arrangement, said first pair of levers (511) being able to travel along a curved trajectory (T) from a point (T1) where the gripping means (514) are situated at a maximum relative distance to a point (T2) where the same gripping means (514) are situated at a minimum relative distance, along the outward and return path from one station (F) to the other station (R), said second pair of arms (1550) being able to travel along a curved trajectory (T) from a point (T2) where the grippers (514) are situated at a minimum relative distance to a point (T3) where the same grippers (514) are situated at a maximum relative distance and vice versa along the outward and return path from one station (R) to the other station (S).

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] Italian Patent Application No. MI 2005A 001142 which is hereby incorporated by reference. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT: [0002] Not Applicable THE NAMES OF THE PARTIES TO A JOINT RESEARCH AGREEMENT: [0003] Not Applicable INCORPORATION-BY-REFERENCE OF MATERIAL SUBMITTED ON A COMPACT DISC: [0004] Not Applicable BACKGROUND OF THE INVENTION [0005] 1. Field of the Invention [0006] The present invention relates to a transporting apparatus for bag filling machines. [0007] 2. Description of Related Art [0008] It is known that, in the technical sector relating to the packaging of bulk material, there exists the need to arrange said material inside bags which must be filled with a given and certain quantity of material and then sealed. [0009] It is also known that, for this purpose, automatic bag filling machines have been developed, an example of these consisting of so-called forming / filling / sealing (FFS) machin...

AI Technical Summary

Benefits of technology

"The technical effect of this patent is to provide a bag transportation apparatus for forming / filling / sealing machines that can increase production output without modifying their structure. The apparatus has small dimensions, is easy and inexpensive to produce and assemble, and can be easily installed on existing machines without special adaptation. It includes two pairs of arms that are symmetrically arranged and each carry respective pairs of means for gripping the sides of the bag. The arms are formed by levers that travel along curved trajectories from a point where the gripping means are situated at a maximum relative distance to a point where the same grippers are situated at a minimum relative distance, and vice versa along the outward and return path from one station to the other."

Problems solved by technology

The technical problem which is posed, therefore, is that of providing a bag transportation apparatus for forming / filling / sealing machines, able to solve the problems of the prior art in order to increase the hourly production output of the machine without modifying its structure.

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