JPH0656104A - Packaging apparatus - Google Patents

Abstract

PURPOSE:To perform automatic packaging surely and quickly by eliminating or decreasing an energizing force by an energizing body through operating an energizing force reducer at the time of the drawing operation of a film- drawing and-chucking device. CONSTITUTION:A heat-sealable resin film 1 shaped into an overlapping belt with a predetermined width is wound round a supply roll 17, continuously drawn out so that the upper part of the film 1 is perpendicular to the opening side, and arranged at feed holding rollers 8A, 8B via fixed guide roller 18B. A tension mechanism 3 is provided with a guide roller 19 so that the guide roller is freely movable when the film 1 is drawn out, and an energizing body 20 for energizing the guide roller in a reverse direction is attached to the tension mechanism. The guide roller 19 is provided with an energizing weight 20 via wire so that a tension of predetermined pressure is given to the roller 19. An energizing force reducer 41 for eliminating or decreasing the energizing force is provided and caused to operate at the time of a film-drawing operation. This energizing force reducer 41 is synchronized with drawing to lift the energizing weight 20 to reduce a draw-out resistance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging device for enclosing a package in a film and automatically packaging the film bags containing the package one after another.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
Various packaging devices have been proposed for continuously and automatically packaging film bags containing packaging, but the present invention is stable even when the film is large and accommodates a large amount of packaging, and the weight increases. It is therefore an object of the present invention to provide a packaging device having an unprecedented excellent structure that enables smooth packaging movement and ensures reliable and rapid automatic packaging.

[0003]

The gist of the present invention will be described with reference to the accompanying drawings.

A film supply unit 2 for drawing and supplying a film 1 having a predetermined width is provided with a tension mechanism 3 for tensioning the film 1 at a predetermined pressure, and a film pull-out chuck device 5 for chucking and pulling the leading end 4 of the film 1 for pulling. Is provided on the opposite side of the film supply unit 3, and the film supply unit 3
In the packaging device in which the heat sealing devices 6 and 10, the package storage device 9 and the cutting devices 7 and 12 are provided between the film drawing chuck device 5 and the film drawing chuck device 5, the film 1 drawn out and supplied to the film supply unit 2 is wound. A guide roller 19 to be arranged is provided, and the guide roller 19 is movably provided by pulling out the film 1 by the film pull-out chuck device 5. The guide roller 19 is biased in the direction opposite to the pull-out movement. A body 20 is attached to form the tension mechanism 3, and a biasing force reducing device 41 for eliminating or reducing the biasing force of the biasing body 20 on the guide roller 19 is provided on the biasing body 20 to reduce the biasing force. The present invention relates to a packaging device, characterized in that the device 41 is configured to be operated when the drawing-out chuck device 5 is movable.

[0005]

In the normal state where the film 1 is not pulled, the guide roller 19 is biased by the biasing force of the biasing member 20 in the direction opposite to the direction in which the guide roller 19 moves when the film 1 is pulled out. Biasing force (tension)
Therefore, the film 1 is pulled and stretched by the guide roller 19.

When the film 1 is pulled out and moved by the film pull-out chuck device 5, conversely, the urging force by the urging force 20 acts as a resistance for the film pull-out chuck device 5 to move out. The urging force reducing device 41 operates when the device 5 is pulled out, and the urging force of the urging body 20 disappears or is reduced.

Therefore, when the film 1 becomes large or a large amount of package 15 is put in the film 1,
It is necessary to increase the urging force (tension), but even if the urging force is large, at least all of this urging force does not act as a resistance for the drawing pull-out chuck device 5 to move and the film pull-out chuck device 5 does not move. Is reduced.

[0008]

Embodiments First, a schematic configuration of this embodiment will be described.

A film supply unit 2 for drawing out and supplying a film 1 having a predetermined width in a folded and polymerized state with the upper part facing the opening side.
Further, a tension mechanism 3 for tensioning the film 1 at a predetermined pressure is provided. A film pull-out chuck device 5 for chucking and pulling the pull-out tip 4 of the film 1 is provided on the opposite side of the film supply unit 3. The film supply unit 3 between the film supply unit 3 and the film pull-out chuck device 5
A vertical seal device 6 for heat-sealing the folded bottom part of the film 1 to the opening part of the upper part of the film 1 is provided close to the vertical seal part 6 sealed by the vertical seal device 6.
A vertical cutting device 7 for vertically cutting the upper part of the film 1 to slightly near the opening is provided along the line 14. This vertical sealing device 6
And the film pull-out chuck device 5 are provided with feed holding rollers 8A and 8B for holding the film 1 at a predetermined interval in the pull-out and transfer direction, and the feed holding rollers 8A and 8B are provided.
An opening device 9 for holding the film 1 from the superposed state to the open state by sandwiching the upper opening of the film 1 and moving the films 1 to the opposite outside is provided as the package storage device 9 therebetween. A lateral seal device 10 for heat-sealing the upper end opening of the film 1 is provided between the pull-out moving position of the film pull-out chuck device 5 and the feed / holding roller 8B on the pull-out / transport side, and it is located near the feed / holding roller 8B. The film 1 is cut by the cutting device 7 so as to be continuous with the cutting edge 11.
A cutting and cutting device 12 for cutting and cutting is provided.
A film feeding device 13 is provided at the bottom of the film 1.

Next, the operation (operating procedure) in the above configuration
Will be explained.

When the film pull-out chuck device 5 chucks the pull-out front end 4 (cut end by the cutting and cutting device 12) of the film 1 located near the feeding and holding roller 8B on the pull-out transfer side and pulls out to the pull-out transfer position, the tension mechanism The film 1 is held in a tensioned state by a predetermined pressure 3 and is continuously drawn out from the film supply unit 3.

This film is drawn out in a folded and stacked state with the upper part facing the opening side, and is provided with a vertical sealing device 6, a vertical cutting device 7, a feeding and holding roller 8A, an opening device 9, a feeding and holding roller 8B, a cutting device 12, and a horizontal sealing device. The pull-out tip 4 is chucked to the film pull-out chuck device 5 via the device 10.

In this state, the vertical sealing device 6 heat-seals (vertically seals) the folded bottom portion of the film 1 from the opening to the upper side, and the bottom portion of the film 1 is cut along the vertical sealing portion 14 by the vertical cutting device 7. From the top opening to slightly near you.

Further, between the feeding and holding rollers 8A and 8B,
The upper opening portion of the film 1 is clamped by the opening device 9 and moved to the opposite outer sides, respectively, and is held in the open state from the superposed state, and the upper opening portion in this open state is not continuously connected by the vertical seal portion 14. The package 15 is loaded and stored in the film 1 which is divided but is in a divided bag state.

Next, when the storage of the package 15 is completed, the upper opening is closed by the opening device 9 (package storage device 9). The opening of the dividing bag (the dividing bag located between the feeding and holding roller 8B and the film pull-out chuck device 5) is heat-sealed (horizontal sealed) by the horizontal sealing device 10 to be closed, and further by the peeling and cutting device 12. The film 1 (this dividing bag 16) is cut off from the succeeding part by cutting in a continuous state with the cutting edge 11 by the vertical cutting device 7 located near the feeding and holding roller 8B, and the continuous upper part is cut.

Then, the film feeding device 13 is actuated to discharge and move the separated dividing bag 16 (film bag containing the package), and the film pull-out chuck device 5 returns to the rear side again and the pull-out tip 4 (cut-off cutting device 12 again). The cut end) is chucked to pull out and transfer the partition bag that has finished storing the package 15.

As described above, the vertical seal, the vertical cut edge formation, the opening, the storage of the package, the horizontal seal, the cutting of the cut, and the discharging and transferring are sequentially repeated, and the film bag (separating bag 16) in which the package 15 is continuously enclosed. ) Is automatically packaged.

Further, each structure and each part will be described.

The film 1 is a transparent resin film having a predetermined width which is folded and polymerized to form a band, and a heat-sealable film is used.

Next, the film supply section 2 which is the gist of the present invention
In addition, the tension mechanism 3 will be described.

The film 1 is wound around a supply roll 17,
The film 1 is configured to be continuously drawn out in a vertical state from the supply roll 17 in a folded state where the upper portion is on the opening side. Also, this drawn film 1
Through the fixed guide roller 18A, the movable guide roller 19 and the fixed guide roller 18B, and the sandwiching rollers 8A and 8B.
It is configured to be distributed to.

The tension mechanism 3, as shown in FIG.
The guide roller 19 is connected to the film pull-out chuck device 5
The film 1 is movably provided by pulling out the film 1, and the guide roller 19 is provided with an urging body 20 for urging the guide roller 19 in the opposite direction with respect to the movement of the film.

In this embodiment, a biasing weight 20 is provided on the guide roller 19 via a wire as the biasing body 20, and a biasing force is applied to the guide roller 19 by the load of the biasing weight 20 so that a predetermined tension is applied. It is given to film 1.

Further, the urging body 20 is provided with a urging force reducing device 41 for eliminating or reducing the urging force of the urging body 20 to the guide roller 19, and the urging force reducing device 41 is provided in the film pull-out chuck device 5. It is configured to operate when the drawer is movable.

In this embodiment, a cylinder device 41 for lifting the urging weight 20 is provided as the urging force reducing device 41, and the urging weight 20 is lifted in synchronism with the pull-out of the film pull-out chuck device 5, and the urging force is applied when pulling out. The weight of the weight 20 does not become a resistance, and the pull-out resistance by the film pull-out chuck device 5 is reduced.

Further, in this embodiment, when the initial film setting is completed, the guide roller 19 is automatically moved to the position of the position detection sensor (not shown) of the guide roller 19 against the urging body 20 to supply the roll. A reverse rotation drive device 44 is provided which moves by reversing the film 17 and rewinding the film 1.
Thereby, the tension by the biasing member 20 is automatically applied to the film 1 when the film is set.

Next, the vertical sealing device 6 will be described.

The vertical sealing devices 6 are vertically arranged side by side with a small space between them, and as shown in FIG. 3, two vertical lines are formed with a small space from the folded bottom of the film 1 to the upper opening. It is to be heat-sealed.

As shown in FIG. 5, a heat sensor 21 is attached to the exothermic seal base portion 22 of the vertical seal device 6 (and the horizontal seal device 10 to be described later), and the temperature of the exothermic seal base portion 22 is adjusted by the heat sensor 21. Is detected, the heat sealing temperature (amount of electricity) and the heat sealing time are controlled by the control unit 42, and the optimum sealing process is performed to reduce power consumption.

Also, the terminal portions at both ends of the heat generation seal base portion 22
The terminal portion 23 is attached to the heat generating seal base portion 22 via the leaf spring 24 so that the terminal portion 23 can be freely moved, and even if the heat generating lead wire expands or contracts due to a sudden temperature change due to heat generation The terminal portion 23 is movable via the leaf spring 24 to prevent disconnection of the connection wire at the terminal portion 23.

When the film 1 adheres to the vertical sealing device 6 after heat sealing, in order to remove it,
As shown in FIG. 6, air blowers 25 are provided on both sides of the film 1 as a boundary.

As such a peeling device, a method of simply projecting a peeling shaft toward the film 1 may be considered, but the peeling restriction by this shaft is simply performed by the vertical sealing device 6
It is good to use only the device, but the vertical cutting device 7 and the opening device 9
Therefore, in the case of this apparatus in which the film 1 needs to be moved, there is a problem that the film 1 is caught on the shaft.

Therefore, this air blow device of this embodiment
No. 25 is an excellent peeling device that does not support the movement of the film 1 or the like and can also cool the vertical sealing device 6 by air.

Next, the vertical cutting device 7 will be described.

As shown in FIG. 3, the film 1 is provided between the vertical seal portions 14 and 14 which are heat-sealed into two strips by the vertical seal device 6.
The film 1 is cut off from the folded bottom part to the front side of the upper opening part. Since the upper part is slightly left uncut, the film 1 is not cut and cut and remains connected.

The cutter blade 26 of the film 1 pierces a predetermined position on the upper portion of the film 1 and slides up and down to cut to the bottom of the film 1.
At the time of piercing 26, the film 1 is pierced by being swung while rotating downward as shown in FIG.

Conventionally, this type of cutter blade simply pierces the film 1 at a right angle, but the film is misaligned and the cutting does not go smoothly.
There was a problem such as the occurrence of misalignment of the film and the fact that the film transfer was supported, but this problem has been solved by adopting the cross cutting method.

Next to the vertical sealing device 6 and the vertical cutting device 7, feed holding rollers 8A and 8B are provided at predetermined intervals.
The film 1 is fed well and the opening holding function of the opening device 9 is fulfilled.

Each of the feeding and holding rollers 8A and 8B has a structure in which the upper end portion of the film 1 is sandwiched between a pair of holding rollers.

Next, the opening device 9 (package storage device 9) arranged between the feeding and holding rollers 8A and 8B will be described.

The opening device 9 is a mechanism for causing the upper edge portions of the films 1 which have passed through the feeding and holding roller 8A and which are overlapped with each other to pass through the holding movable member 27 to be held by the feeding and holding roller 8B. When the holding movable member 27 is opened, the holding movable members 27 are operated to hold the upper edge portions respectively, and the holding movable members 27 are moved to the outside and held in the opened state.

A charging unit 28 for charging the package 15 is arranged above the bag opening.

In the figure, reference numeral 29 is a small bag packaging machine, 30 is a double-type small bag (package 15) conveying conveyor, 31 is a small bag storage section, 32 is a loading conveyor, 33 is a sorting device, and 34 is a defective continuous packaging small bag. This is a defective product discharging device for discharging, and in the present embodiment, a large amount of small bag packages by the same type of packaging device (small bag packaging machine) are put into the device as a package 15 and further packaged.

Next, the film pull-out chuck device 5 will be described.

The film is pulled out and transferred by chucking and pulling the film leading end 4 (cutting edge by the cutting and cutting device 12) which is positioned in the projecting state by the feeding and holding roller 8B, and the position of the feeding and holding roller 8B. The chuck portion 35 is pulled out and moved in the transfer direction by a predetermined distance.

In order to improve the chuck holding force, the chuck portion 35 is provided with a rubber material on its holding surface as shown in FIG. Further, as shown in FIG. 10, it may be configured to open and close at a wide angle and to form uneven teeth on the holding surface so as to facilitate holding and improve the holding force. In addition, the feeding and holding roller 8B
In order to prevent the protruding tip 4 of the drawer from being more difficult to be held by the chuck portion 35 due to a bending phenomenon or the like, a regulation guide rod 36 for preventing the bending of the drawer tip 4 from bending is provided opposite to the feeding and grasping roller 8B. The chuck rod 35 is configured to escape the guide rod 36 and hold the tip 4 of the drawer.

Next, the separating / cutting device 12 will be described.

The separating / cutting device 12 is the vertical cutting device 7
The film bag (divided bag 16) in which the transverse sealing device 10 is finished and the package 15 is cut is cut and cut so as to be connected to the cutting edge 11 cut by the feeding and holding roller 8B.
It is provided in the vicinity.

As shown in FIG. 3, the separating / cutting device 12 is provided with a cutter blade 40 that can be tilted so as to obliquely cut an upper continuous portion of the vertical cutting device 7.

There is a problem in that, if the cutting is simply performed vertically, the cutting edge 11 that has already been cut is not directly connected to the cutting edge 11 and good cutting cannot be performed. A troublesome process such as forming an edge was required, but this diagonal cutting method of this embodiment surely solves the problem.

Further, due to the slant cutting, the cutting edge (drawing tip 4) is projected in a triangular shape, and the chuck by the film drawing chuck device 5 is also improved.

Next, the horizontal sealing device 10 will be described.

The horizontal sealing device 10 is arranged between the feeding and holding roller 8B and the film pull-out chuck device 5 at the pull-out moving position, completes the loading of the package 15, and opens the partition bag 16 at the upper opening. The bag air vent hole 37 is formed so as to be closed by a heat seal (horizontal seal) so as to close the portion, and in this embodiment, one side corner portion does not intersect the vertical seal portion 14.

Next, the film feeding device 13 will be described.

A conveyor device is arranged from the middle of the opening device 9 to below the lateral sealing device 10 so that the film 1 can be discharged and transferred.

At the bottom of the opening device 9, a film 1 receiving plate 38 is arranged continuously with the film feeding device 13, and the bottom of the film 1 is fitted in the center of the receiving plate 38, so that the film 1 Is formed with a guide groove 39 for guiding the transfer of.

Further, in the present embodiment, the feeding and holding roller 8A is synchronized with the pulling movement of the film pulling chuck device 5 and is synchronized.
8B is fed and rotated, the film feeding device 13 is driven to be ejected and fed, and as described above, the urging force reducing device 41 does not resist the urging force of the urging body 20, which is a tension pressure. The object 15 is loaded and stored, and is configured so that it can be smoothly transferred even if it is heavy.

[0058]

Since the present invention is constructed as described above, even if the film bag is designed so as to enclose a large amount of packaging and a large tension is applied to the film, this tension can be maintained when the film is pulled out. At least, it does not become the resistance of the film pullout, the pulling force at the time of pulling out the film is reduced, and it becomes an excellent packaging device that can surely and quickly realize automatic packaging.

[Brief description of drawings]

FIG. 1 is a schematic configuration plan view of the present embodiment.

FIG. 2 is a schematic configuration front view of the present embodiment.

FIG. 3 is an explanatory view of film cutting according to the present embodiment.

FIG. 4 is an explanatory front view showing a tension mechanism of a film supply unit, which is a main part of this embodiment.

FIG. 5 is an enlarged view illustrating the vertical sealing device according to this embodiment.

FIG. 6 is an operation explanatory view of the air blowing device of the present embodiment.

FIG. 7 is an operation explanatory view of the vertical cutting device of the present embodiment.

FIG. 8 is an explanatory front view of the film pull-out chuck device of this embodiment when chucking.

FIG. 9 is an explanatory plan view immediately before chucking of the film pull-out chuck device of the present embodiment.

FIG. 10 is a plan view showing another example of the chuck portion of the film pull-out chuck device of this embodiment.

FIG. 11 is a front view for explaining the operation of the separating / cutting device according to the present embodiment.

FIG. 12 is an explanatory front view showing the film feeding device at the bottom position of the opening device of the present embodiment.

FIG. 13 is an explanatory plan view showing the receiving plate at the bottom position of the opening device of the present embodiment.

FIG. 14 is an explanatory side view of the opening device of the present embodiment in a film supporting state at the bottom position.

[Explanation of symbols]

 1 film 2 film supply unit 3 tension mechanism 4 drawer tip 5 film pull-out chuck device 6,10 heat sealing device 7,12 cutting device 9 package storage device 19 guide roller 20 biasing body (biasing weight) 41 biasing force reducing device (Cylinder device)

Claims (1)

[Claims] 1. A film supply chuck is provided with a tension mechanism for tensioning a film at a predetermined pressure in a film supply unit for drawing and supplying a film of a predetermined width, and a film drawing chuck device for chucking and pulling the leading end of the film as a film supply unit. It is provided on the opposite side, and a heat sealing device, a package storing device,
In a packaging device provided with a cutting device, a guide roller for winding and arranging a film to be drawn out and supplied to a film supply unit is provided, and the guide roller is movably provided by drawing out the film by the film drawing chuck device. An urging member for urging the roller in the opposite direction to the movability of the drawer is attached to form the tension mechanism, and the urging member eliminates or reduces the urging force of the urging member to the guide roller. A packaging device, comprising a force reducing device, which is configured to operate when the film pull-out chuck device is movable.