JP2021160732A - Packaging machine and packaging method for packaging tight to-be-packaged objects in package bag - Google Patents

Abstract

To provide a packaging machine that automatically charges/packages a plurality of small bags filled with to-be-packaged objects, even if tight, in a package bag such as a gusset bag.SOLUTION: A packaging machine in the present invention is for receiving/packaging a plurality of small bags 8 in a gusset bag 4, and comprises: a clamp that clamps a delivered package bag 4 at both left and right sides; an opening mechanism that comprises a pair of suction cups to suck main and back surfaces of the package bag 4 clamped by the clamp and support the package bag 4 and makes the gusset bag 4 open by broadening the spacing between the pair of suction cups; a partitioning plate 6 that inserts the small bags 8 into the bag from an opening of the gusset bag 4 whose bag mouth is opened and guides them vertically or obliquely to a bag bottom; a pair of chute plates 7 that is arranged above an opening of the bag mouth of the gusset bag 4 and pivotally supported to incline toward an interior of the opened gusset bag 4; a fold lever that after inputting the small bag, folds both sides of the gusset bag 4 and closes the bag mouth; and a sealer that seals the closed bag mouth of the gusset bag 4 clamped by the clamp.SELECTED DRAWING: Figure 10

Description

The present invention relates to, for example, a wrapping machine and a wrapping method for automatically storing a plurality of small bags in a gusset bag without gaps.

For food packaging, etc., a plurality of subdivided sachets are often packaged in one gusset bag and provided to the market. For example, the package disclosed in Patent Document 1 is a package in which tsukudani seaweed is wrapped in a small bag, and the small bags are stored in a large package. The pouch is formed by bending a square piece of a transparent or translucent synthetic resin sheet in two and welding the side edges facing each other to form a pouch, and boiled seaweed from the mouth of the pouch. It's packed.

On the other hand, the packaging bag (gusset bag) for storing the small bags together is a bag-shaped already formed by appropriately processing a transparent or translucent synthetic resin sheet, and the upper part is opened and the inside of the packaging bag is opened. A plurality of sachets are put in and stored in the bag, and then the upper opening is sealed.

The packaging in which a plurality of small bags are filled in a gusset bag having a gusset portion as described above enhances the commercial value as a beautiful packaging form and can be said to be a preferable packaging mode.

Actual Kaihei 6-8293

However, as in Patent Document 1, when a plurality of pouches are stored and packaged in a gusset bag, the internal volume of the gusset bag is sufficiently large with respect to the total volume of the plurality of pouches, in other words, it is a spacious size. In that case, the bag opening of the gusset bag is opened, and the pouch can be easily inserted from the bag opening. However, as shown in FIG. 12, when the outer circumference of the pouch does not have much margin with respect to the inner circumference of the packaging bag, in other words, when it is tight, it is difficult to fill the contents simply by opening the bag mouth of the packaging bag. Therefore, it was difficult to mechanize, and the process of this part had to rely on manual packaging.

Further, if a tight pouch is stored in the gusset bag to improve the appearance, the outer peripheral dimensions of the two pouches 8 and 8 shown in FIG. 12 are made substantially equal to the inner peripheral dimension of the gusset bag 4, and the gusset bag is used. It is necessary to push the two pouches 8 and 8 into the gusset bag so that there are no wrinkles on the outer surface of the gusset bag. For this reason, there is a problem that the difficulty of automated packaging becomes even higher.

The present invention has been made to solve the above problems, and provides a packaging machine and a packaging method for easily packaging a tight pouch in a packaging bag.

In order to solve the above-mentioned problems, the present invention is a packaging machine for storing and packaging a plurality of small bags in a packaging bag, and a clamp for sandwiching both the left and right sides of the delivered packaging bag and a clamp. A pair of suckers that adsorb the front and back surfaces of the sandwiched packaging bag and support the packaging bag are provided, and an opening mechanism that widens the gap between the suckers to open the packaging bag and is arranged above the opening of the bag mouth of the packaging bag. It is characterized in that it is provided with a pair of chute plates that are pivotally supported so that they can be inclined toward the inside of the opened gusset bag.

The present invention is a packaging method in which sachets are inserted and packaged on the left and right sides of a gusset bag sandwiched between a pair of clamps. In the step of sandwiching and handing over the gusset and in the opening section of the bag, the sucker sticks to the front and back of the gusset bag to suck and support the gusset bag, and at the same time, the clamp that supported the gusset bag in the bag supply section is released. In the step and the insertion section, the partition plate is inserted into the gusset bag whose bag opening is opened in the bag opening section, and the pouch is guided from the chute plate by the partition plate and inserted into the left and right separately. After inserting the pouch, fold both sides of the gusset bag with the folding lever to close the gusset bag, hold the closed gusset mouth with the clamp, separate the sucker from the gusset bag, and hand over the pouch to the clamp again. It features a step to seal the closed gusset mouth of the gusset bag sandwiched by the clamp.

According to the above-mentioned configuration, the packaging machine and the packaging method of the present invention can reliably and easily put in a plurality of small bags in a tight condition with respect to the packaging bag and wrap them, and mechanical automatic packaging becomes possible.

Top view of the rotary wrapping machine to which the first embodiment is applied. Top view of the clamp arm in the gusset bag supply section Top view of the gusset bag with the mouth open by a suction cup Top view showing a state in which a pouch is filled in a gusset bag Top view of the gusset bag with the mouth closed and re-grasped with a clamp Front view of inserting the partition plate of the second embodiment into the gusset bag Front view of inserting a pouch into a gusset bag with a chute plate Front view showing before tilting the partition plate of Example 3. Front view showing the state where the partition plate is inserted in the gusset bag Front view of filling one pouch into a gusset bag with a chute plate Front view of filling the other pouch into the gusset bag with a chute plate Perspective view showing a state in which a pouch is tightly filled in a gusset bag.

(Example 1)
First, as an example of the present invention, an example applied to the rotary wrapping machine M will be described. However, the present invention is not limited to the rotary wrapping machine M, and may be a linear wrapping machine. Further, although the packaging bag 4 will be described with respect to the gusset bag 4, the packaging bag 4 is not limited to the gusset bag 4.

FIG. 1 is a plan view of the rotary wrapping machine M. In this rotary packaging machine M, eight sets of two clamp arms 2 are supported on the peripheral edge of the rotor 1, and clamps 3 and 3 for sandwiching both the left and right sides of the packaging bag 4 are provided at the tip of each clamp arm 2. ing.

The rotor 1 is intermittently rotated clockwise for each section indicated by the numbers (1) to (8) in parentheses at a pitch of 45 degrees corresponding to the circumferential spacing of the eight sets of clamp arms 2 by an intermittent drive device (not shown). do.

Further, between the clamp arms 2 and 2, an opening mechanism 20 which is supported by the support member 22 and has a pair of suction cups 21 and 21 facing each other is arranged. The opening mechanism 20 orbits the outer circumference of the rotor 1. Although not shown, the suction cups 21 and 21 are connected to the suction device via a suction pipe.

In the bag supply section (1) of the rotary packaging machine M, the gusset bag 4 folded flat from the gusset packaging bag supply device 5 is supplied to the clamp 3 of the clamp arm 2 one by one by the delivery device 10, and the left and right sides thereof are supplied one by one. Is sandwiched between the clamps 3 of the clamp arms 2 and 2. The gusset bag 4 is arranged between the suction cups 21 and 21 (see FIG. 2).

The rotor 1 then rotates 45 degrees and the clamp 3 holding the gusset bag 4 moves to the bag opening section (2). At the same time, the opening mechanism 20 provided with the suction cups 21 and 21 also orbits while following the clamp 3. Then, as shown in FIG. 3, a pair of suction cups 21 and 21 approach each other from the front and back of the gusset bag 4 and attract the front and back surfaces of the gusset bag 4. Next, the suction cups 21 and 21 move in opposite directions as shown by the arrow P, and the bag mouth of the gusset bag 4 is widened. At the same time, the clamps 3 and 3 holding the gusset bag 4 until then open the gusset bag 4.

Next, the rotor 1 rotates intermittently by 45 degrees and moves to the pouch loading section (3) with the opened gusset bag 4 held by the suction cups 21 and 21. In this pouch loading section (3), as shown in FIG. 4, two pouches 8 are separately loaded into the gusset bag 4 on the left and right sides. Although the mechanism for loading is not shown in FIG. 4, some ingenuity is required when loading two tight sachets 8. An example thereof will be described with reference to the following examples.

When the loading is completed, the rotor 1 is intermittently rotated by 45 degrees and moved to the folding section (4). Here, as shown in FIG. 5, both sides of the gusset bag 4 are folded with the folding levers 9 and 9, the bag mouth is closed, the closed bag mouth is clamped again with the clamps 3 and 3, and then the suction cups 21 and 21 are sucked. Stop and move away from the bag to the seal sections (5) and (6) with the sealer 30. The seal section (5) is a temporary seal, and the seal section (6) is a main seal.

The seal sections (5) and (6), the cooling section (7) provided with the cooling device 31, and the unloading section (8) provided with the unloading conveyor 32 are the same as those of the conventional rotary wrapping machine. However, if it is the same as the conventional one, there is a possibility that the opening mechanism 20 provided with the suction cups 21 and 21 interferes with the sealer 30 of the seal sections (5) and (6) and the cooling plate of the cooling device 31. In order to avoid interference, the opening mechanism 20 is configured to retract downward or to the left and right in the seal sections (5) and (6) and the cooling section (7). Further, although not shown, the structure may be such that the opening mechanism 20 is attached to each clamp arm 2 and the sealer 30 is attached to the upper part of each opening mechanism 20. With such a structure, interference does not occur. Further, the delivery device 10 of the gusset bag 4 in the bag supply section (1) does not deliver the gusset bag 4 from the upper part of the clamp arm 2 as shown in FIG. 1, but instead delivers the gusset bag 4 of the gusset packaging bag supply device 5. Interference can be avoided by sucking and rolling up with a sucker (not shown) and passing it from below the clamp arm 2 to the clamp 3 of the clamp arm 2.

(Example 2)
Next, Example 2 will be described. Since the second embodiment is the same as the first embodiment except for the pouch supply section (3), the pouch supply section (3) of the second embodiment will be described. In the pouch supply section (3) of the second embodiment, as shown in FIG. 6, a partition plate 6 slightly smaller than the opening width of the bag opening of the gusset bag 4 is inserted vertically from the bag opening of the packaging bag 4. Also in the second embodiment, in the supply section (3), two pouches 8 are put into the gusset bag 4 separately on the left and right.

As shown in FIG. 6, the partition plate 6 is provided in the pouch supply section (3) so as to be removably inserted into the gusset bag 4 immediately above the position corresponding to the opening of the bag mouth of the gusset bag 4. Then, the partition plate 6 is inserted into the gusset bag 4 so as to be in a posture according to the arrangement state of the pouch 8. In the case of FIG. 6, since there are two pouches 8, they are inserted at the center position of the gusset bag 4.

As shown in FIG. 6, chute plates 7 and 7 are arranged on both sides of the upper portion of the gusset bag 4 at symmetrical positions sandwiching the partition plate 6. The chute plates 7 and 7 are pivotally supported by rotating shafts 72 and 72 so that the tips 71 and 71 can be rotated from a horizontal posture so as to enter the gusset bag 4. Although not shown, the pouch 8 is conveyed by a conveyor or the like and placed on the chute plates 7 and 7.

When the chute plates 7 and 7 are tilted into the gusset bag 4 as shown in FIG. 7, the pouches 8 and 8 placed on the chute plate 7 slide down into the gusset bag 4 using the partition plate 6 as a guide and fill the gusset bag 4. Will be done. At this time, the gusset bag 4 is supported in a state where the front and back surfaces are opened by the suction cups 21 and 21, and at the same time, the insides on both sides of the gusset bag 4 are expanded by the tips 71 and 71 of the chute plates 7 and 7, so that the bag is a bag. The open state of the mouth is ensured, and even the pouch 8 which is a little tight to the gusset bag 4 falls smoothly into the gusset bag 4 without interfering with each other.

After that, in the gusset bag 4, the rotor 1 rotates intermittently by 45 degrees to move to the folding section (4), and the folding lever 9 folds both sides of the gusset portion of the gusset bag 4 to close the bag opening and close the bag opening. Is held again by the clamps 3 and 3, and then moved to the seal section (5) (6), the cooling section (7), and the carry-out section (8), which is the same as that of the first embodiment.

(Example 3)
Since the third embodiment is the same except for the operation of the partition plate 6 of the second embodiment, the operation of the partition plate 6 will be mainly described. The insertion posture of the partition plate 6 shown in FIG. 6 is tilted to one side as shown in FIG. 8, and the partition plate 6 is inserted into the gusset bag 4 in that state as shown in FIG. Then, when the insertion is completed, the chute plate 7 (on the right side in the drawing) on one side is tilted. Then, by tilting the chute plate 7 on one side, the pouch 8 is put into the bottom of the gusset bag 4 as shown in FIG.

When the charging of the gusset bag 4 on one side is completed as described above, the gusset bag 4 on one side is tilted in the opposite direction with the lower end 6A of the partition plate 6 as the center as shown by the arrow A, and the other side is inclined as shown in FIG. The chute plate 7 of the above is tilted into the gusset bag 4, and the pouch 8 is inserted.

With the above configuration, the pouch 8 is guided into the gusset bag 4 one side at a time by the partition plate 6 and put into the gusset bag 4, so that the pouch 8 that is tight to the gusset bag 4 is surely used. Can be packaged in. When the series of loading operations is completed, the partition plates 6, the chute plates 7, and 7 return to their original positions and stand by in preparation for the supply of the next pouches 8, 8.

As described above, according to the present invention, it is possible to tightly store a plurality of pouches 8 in a packaging bag 4 such as a gusset bag, which is a packaging mode for a good-looking product and has been difficult to automatically mechanize in the past. It will be easier, and it will be possible to supply products in large quantities and at low cost.

The present invention is useful in a packaging machine that easily wraps a plurality of tight sachets into a packaging bag such as a gusset bag.

M Rotary packaging machine 1 Rotor 2 Clamp arm 3 Clamp 4 Packaging bag (gusset bag)
5 Gusset packaging bag supply device 6 Partition plate 6A Lower end 7 Chute plate 8 Pouch 9 Folding lever 10 Delivery device 20 Opening mechanism 21 Sucker 22 Support member 30 Sheila 31 Cooling device 32 Carrying out conveyor 71 Chute plate tip 72 Rotating shaft

Claims (4)

A packaging machine that stores and wraps a plurality of small bags in a packaging bag. The clamps that sandwich the left and right sides of the delivered packaging bag and the front and back surfaces of the packaging bag sandwiched between the clamps are attracted to each other for packaging. It is provided with a pair of suckers that support the bag, and has an opening mechanism that widens the space between the suckers to open the packaging bag, and is arranged above the opening of the bag mouth of the packaging bag so that it can be inclined toward the inside of the opened gusset bag. A packaging machine equipped with a pair of shaft-supported chute plates. The packaging machine according to claim 1, further comprising a partition plate that is inserted into the bag through the opening of the packaging bag having an open bag mouth and guides the pouch to the bottom of the bag in a vertical or inclined manner. The wrapping bag is a gusset bag, which is a wrapping machine that stores and wraps a plurality of small bags in the gusset bag.
A bag supply section that holds the left and right sides of the gusset bag between a pair of clamps and delivers it.
A bag opening section that widens the gap between suction cups to open the gusset bag by an opening mechanism equipped with a pair of suction cups that are attracted to the front and back surfaces of the gusset bag supported by the clamp and support the packaging bag.
A pouch throwing section in which a partition plate is inserted into the gusset bag through the opening of the gusset bag opened in the bag opening section, and the pouch is thrown into the gusset bag from a chute plate arranged at the top of the gusset bag.
After inserting the pouch, fold both sides of the gusset bag with the folding lever to close the bag mouth, hold the closed bag mouth with a clamp, and then hand over the pouch to the clamp again from the suction cup support.
A seal section that seals the closed mouth of the gusset bag clamped by the clamp,
The packaging machine according to claim 1, wherein the packaging machine is provided with. A packaging method in which sachets are inserted into the left and right sides of a gusset bag sandwiched between a pair of clamps and packaged.
In the bag supply section, the passing step of sandwiching the left and right sides of the gusset bag between a pair of clamps,
In the bag opening section, the suction cups are attracted to the front and back surfaces of the gusset bag to attract and support the gusset bag, and at the same time, the clamp that supported the gusset bag in the bag supply section is released.
In the loading section, a partition plate is inserted into a gusset bag whose bag opening is opened in the bag opening section, and the pouch is guided from the chute plate by the partition plate and inserted into the left and right parts.
In the folding section, after inserting the pouch, fold both sides of the gusset bag with the folding lever to close the bag mouth, clamp the closed bag mouth with a clamp, separate the suction cup from the gusset bag, and deliver the pouch to the clamp again. Steps and
A step to seal the closed mouth of a gusset bag sandwiched by a clamp,
A packaging method characterized by being equipped with.

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