JPH01226535A - Automatic bag opening machine - Google Patents

Abstract

PURPOSE:To prevent cut pieces of bags from mixing with the content of the bags even when out pieces of bags are produced at the time of bag opening, by moving a bag opening on a shooter after thoroughly removing the cut pieces. CONSTITUTION:A filled bag 1 is kept standing by holding the bag with a first holding plate 21 of a holding equipment 2 and a second holding plate 22 which is advanced toward the first holding plate by a cylinder 24. The upper end of the bag is held by a clamp by lowering a cylinder 31, and the upper part of the bag is relaxed by lowering the cylinder 31 further. A vibration adding table 4 is made to operate, a powdery and granular material 11 in the bag 1 is made to move downward. Then by a cylinder 25, a third holding place 23 is made to advance and is pressed under a bag opening attaching part. A cutter 5 is made to rotate to start cutting, and at the same time, the cylinder 31 is moved to remove the bag opening attaching part. In the meantime, a waste collecting nozzle 6 is made to run along the bag opening, and wastes are completely removed when produced. Thus the cut pieces of bags are prevented from mixing with the contents.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a bag opening machine for automatically opening a bag filled with powder and taking out the contents.

[Conventional technology 1] The work of taking out powder and granules from bags requires a lot of effort;
In addition, since dust tends to be generated and the working environment becomes poor, various automatic bag opening machines have been developed and used.

For example, a known example is a white moving bag in which the bottom of the package is opened with a rotating disc-shaped cutter, the powder is shaken off into a hopper below by vibration, and the empty bag is separated and discharged by an inclined trough! a (Special Publication No. 51-4157), or by holding both sides of the supplied mounting on a needle belt and cutting the center of the bag with a disc-shaped cutter to divide the bag into left and right parts. There is an automatic bag transfer machine (Japanese Patent Publication No. 49-44276) that drops the powder into a small brim and removes the empty bag while it is stuck in a needle belt.

However, since all of these bag opening machines cut the bag in the hopper, it is difficult to avoid the bag chips from getting mixed with the contents taken out. Conventional automatic bag opening machines are unsuitable for industries such as food and pharmaceuticals, where contamination with foreign matter is extremely important.

[Problems to be Solved by the Invention] The purpose of the present invention is to solve the problem even if bag scraps are generated when opening the bag.
To provide an automatic bag opening machine that does not mix the contents taken out by the automatic bag opening machine.

[Means for Solving the Problems] The automatic bag opening machine of the present invention automatically opens a bag 1 filled with powder and granules and takes out the contents. As shown in Figures 1 and 2, there is a holding device 2 that keeps the bag upright and inverted, a clamp 3 that grips the upper edge of the bag, a vibration table 4, and a cutter 5 that cuts the bag mouth part. and a dust collecting nozzle 6 for removing cutting chips, and the holding device 2 includes a first holding plate 21 of a size that almost covers one side of the bag and extends to the bag mouth part; a second retaining plate 2 facing the bag and having a size that substantially covers the other side of the bag;
2 and a third holding plate 23 that independently presses the other bag mouth part of the bag, a means for advancing and retracting them, such as a hydraulic cylinder 24, 25, is added, and the bag can be adjusted while holding the bag. It is provided with reversing means 7 for shifting from standing to inverted.

The first and second holding plates of the holding device may be provided with suction cups 26, called vacuum pads, that absorb suction on both sides of the bag so that the bag can be firmly held even after being inverted.

[Work] The automatic bag opening machine of the present invention is used as follows.

First, as shown in FIG. 1, the second holding plate 22 is advanced with the cylinder 24 toward the first holding plate 21 of the holding device 2, and is held between them to hold the mounting 1 in an upright state. . The cylinder 31 is lowered and the upper edge of the bag is gripped by the clamp 3, and the cylinder 31 is further lowered to slacken the upper part of the bag. By operating the vibration table 4, the powder and granular material 11 in the bag 1 is
move downward.

Subsequently, as shown in FIG. 2, the cylinder 25
The third holding plate 23 is pushed forward and pressed under the bag mouth part. The cutter 5 is rotated to start cutting, and the cylinder 318 is moved to remove the bag mouth part. During this time, a dust collecting nozzle 6 is run through the opening of the bag to completely remove any chips that are generated.

After opening, as shown in Fig. 3, while holding the bag in a sealed state, the bag is inverted along with the holding device using the reversing means 7, and the bag is turned upside down so that the opening opening is positioned above the shooter 8. . The cylinder 25 is moved backward and the cylinder 24 is smoothly moved with the mouth of the bag loosened to help discharge the powder and granular material.

After discharging, the holding device holding the empty bag is moved in parallel to discharge the empty bag.

[Effects of the Invention] The automatic bag opening machine of the present invention moves the bag opening opening onto the shooter after completely removing the chips as described above.
No chips are mixed into the powder or granules that are taken out. Therefore, by using this, not only can the labor required for opening bags be reduced and a good working environment can be maintained, but also high quality products can be obtained from powder and granular materials that do not contain foreign substances.

In this way, the automatic bag opening machine of the present invention can be safely used in the food and pharmaceutical manufacturing fields, where there have been problems with the use of automatic bag opening machines in the past.

[Brief explanation of the drawing]

1 to 3 are drawings for explaining the configuration and operation of the automatic bag opening machine of the present invention, in which FIG. 1 shows the state immediately before opening the bag, and FIG. FIG. 3 is a side view showing the dust removal stage, and FIG. 3 is a side view showing the discharge stage. 1... Fruit bag 11... Powder 2...
Holding device 21...First holding plate 22...Second holding plate 23...Third holding plate 24.25...Hydraulic cylinder, 3...Clamp ° 31...Hydraulic cylinder 4...Preservation device 5...Cutter 6...Dust collecting nozzle 7...Reversing means 8...Shooter

Claims (2)

[Claims] (1) A bag opening machine for automatically opening a bag filled with powder and taking out the contents, including a holding device that keeps the bag upright and inverted, and a holding device that holds the bag in an upright and inverted state. The holding device is composed of a clamp for gripping, a vibrating table, a cutter for cutting the bag mouth part, and a dust collecting nozzle for removing cutting chips. a first holding plate with a size that extends over the width of the bag, a second holding plate opposite to the first holding plate with a size that almost covers the other side of the bag, and a bag lip part on the other side of the bag independently of the first holding plate. An automatic bag opening machine comprising a third holding plate for holding down the bag, a means for advancing and retracting the bag, and a reversing means for shifting from an upright position to an inverted position while holding the bag. (2) The automatic bag opening machine according to claim 1, wherein the first and second holding plates are provided with vacuum pads that attract both sides of the bag.