Gas-Filliing Packaging Method and Packaging Machine Therefor

Abstract

A gas-filling packaging method using a track type gas-filling packaging machine includes a bag placing step in which a number of packaging bags set in a magazine in a stacked state are turned up one by one by a sucker and picking up and then passing the bag to a bag chuck, a bag opening / inflating step of opening the bag mouth and inflating the bottom of the bag by suckers, a bag filling step of lowering a synchronous funnel to be inserted into the bag and applying a receiving member of a bottom tapping unit to the bag, so that the bag is filled with a predetermined amount of article while the bottom is tapped, a deaeration / temporarily sealing step of inserting a deaeration nozzle into the bag to remove air in the bag and holding the bag mouth by a temporary heater.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 2013-099993 filed on May 10, 2013, the entire contents of which are incorporated herein by reference.BACKGROUND[0002]1. Technical Field[0003]The present disclosure relates to a gas-filling packaging method in which a large-sized packaging bag is filled with an article such as about 10 to 20 kilograms of rice, sugar, pet food or fertilizer and is also filled with an inert gas and then sealed, and a packaging machine carrying out the method.[0004]2. Related Art[0005]There has conventionally been known a method of packaging by filling a packaging bag with an article such as about 1 to 15 kilograms of rice or sugar. For example, Japanese patent application publication No. JP-A-2010-126244 filed by the applicant of the present application discloses a packaging method in which a rotary type gas-filling packaging machine is used. In t...

AI Technical Summary

Benefits of technology

The present invention aims to provide a gas-filling packaging method that can pack an article into a large-sized packing bag while maintaining good quality and stability. Additionally, the invention aims to automate the entire packaging process, including the switching of related apparatus when the size of the bag changes. A gas-filling packaging machine is also provided for this purpose.

Problems solved by technology

This results in a disadvantage that grips leaves an imprint of holding portions on the bag.

Furthermore, since the conventional shaping work is carried out only at one station, it is difficult to maintain stability in the form of the bag after the shaping.

This constitutes a cause for easiness to collapse in the case where products after packaging are laid out flat.

A large-sized packaging bag having a length ranging from 600 to 1050 mm increases the length of the belt conveyor, resulting in requirement of a large space.

Furthermore, when zippered bags are fed forward on the belt conveyor, slightly bulging chucks or zippers block smooth movement of the bags.

The disclosed magazine type packaging machine does not have a function suitable for total automation of the packaging machine.

The disclosed magazine type packaging machine is further unsuitable for stock of large-sized gazette bags and large-sized zippered bags and a bag placing work.

This results in a problem that switching with change in the bag size requires much time and labor.

Since each magazine has the accommodation space automatically adjustable according to the size of the bag, a troublesome work resulting from the change in the bag size is not required.

Since the grip automatically adjusts the distance between the paired right and left holding portions according to a size of the bag, a troublesome work of adjusting a number of grips one by one with change in the bag size is not required, and handling of the packaging machine can be carried out smoothly and promptly with change in the bag size.

When a lower opening of the synchronous funnel is inserted with the bag being open, there is a possibility that the lower opening interferes with the folded portions when the folded portions protrude to an inwardly central part.

Since each magazine has the accommodation space automatically adjustable according to the size of the bag, a troublesome work resulting from the change in the bag size is not required.

Since the grip automatically adjusts the distance between the paired right and left holding portions according to a size of the bag, a troublesome work of adjusting a number of grips one by one with change in the bag size is not required, and handling of the packaging machine can be carried out smoothly and promptly with change in the bag size.

When a lower opening of the synchronous funnel is inserted with the bag being open, there is a possibility that the lower opening interferes with the folded portions when the folded portions protrude to an inwardly central part.

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