JP2775724B2 - Packaging equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art
Various packaging devices have been proposed for automatically and successively packaging film bags containing packages one after another, but the present invention is intended to provide a stable film even when the film accommodates a large number of packages and is heavy. It is an object of the present invention to provide an unprecedented excellent packaging device that enables smooth packaging movement and realizes automatic packaging reliably and quickly.

[0003]

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

A tension mechanism 3 for stretching the film 1 to a predetermined force is provided in a film supply section 2 for drawing and supplying a film 1 having a predetermined width.
Clamping the film pull-out chuck device 5 for引動provided on the opposite side of the off <br/> Irumu supply unit 3, the film supply unit 3
Between the film pull-out chuck device 5 and, heat sealing device 6, 10, package storage device 9, in the packaging apparatus provided with a cutting device 7, 12, the film 1 is drawn out supplied to the film supply unit 2 Guide rollers to be wound and arranged
The guide roller 19 is provided movably by pulling out the film 1 by the film pull-out chuck device 5, and comprises a biasing weight that urges the guide roller 19 in the opposite direction to the film pull-out movement. Urging body
20 and attached to constitute the tension mechanism 3, the biasing weight the biasing force of the biasing Zeitai 20 to the guide <br/> Dorora 19
The present invention relates to a packaging apparatus characterized in that an urging force reducing device 41 that disappears or is reduced by being lifted is provided, and the urging force reducing device 41 is configured to be operated when the film pull-out chuck device 5 can be pulled out. .

[0005]

In the normal state where the film 1 is not pulled, the urging force of the urging body 20 composed of the urging weight , that is, the urging weight is applied.
The guide roller 19 is urged in the direction opposite to the moving direction when the film 1 is pulled out by the load of
The film 1 is pulled and stretched by the guide roller 19 based on the urging force (tension) of the urging body 20.

When the film 1 is pulled out and moved by the film pull-out chuck device 5, the urging force by the urging force 20 conversely causes the pull-out movable resistance of the film pull-out chuck device 5, but in the present invention, this film pull-out chuck is used. When the device 5 is pulled out, the urging force reducing device 41 operates and the urging weight is lifted, so that the urging force of the urging body 20 is increased .
There disappear or decrease Jill.

Therefore, when the film 1 becomes large or when a large amount of packages 15 are put into the film 1,
It is necessary to increase the urging force (tension). However, even if the urging force is large, at least all of the urging force does not become the resistance of the draw-out movable of the film pull-out chuck device 5 and the pull-out movable force of the film pull-out chuck device 5 Is reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED 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 overlapped state with the upper side being the opening side.
Is provided with a tension mechanism 3 for stretching the film 1 to a predetermined force . A film pulling chuck device 5 that chucks and pulls the drawing tip 4 of the film 1 is provided on the side opposite to the film supply unit 3. The film supply unit 3 between the film supply unit 3 and the film unloading chuck device 5
A vertical sealing device 6 for heat-sealing the folded portion of the film 1 from the folded bottom portion to the upper opening portion and a little before is provided, and a vertical sealing portion sealed by the vertical sealing device 6.
There is provided a vertical cutting device 7 for vertically cutting the film 1 along an upper portion of the film 1 to a position slightly before the opening. This vertical sealing device 6
Feed gripping rollers 8A and 8B for gripping the film 1 are provided at predetermined intervals in the pull-out and transfer direction between the feed grippers 8A and 8B.
An opening device 9 is provided as the package storage 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 film 1 to the opposite outside. A horizontal sealing device 10 for heat-sealing the upper end opening of the film 1 is provided between the draw-out movement position of the film pull-out chuck device 5 and the feed holding roller 8B on the drawing-out transfer side, and is located near the feed holding roller 8B. The film 1 is cut into a continuous state with the cutting edge 11 by the cutting device 7.
There is provided a separating and cutting device 12 for separating and cutting off.
A film feeder 13 is provided at the bottom of the film 1.

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

When the film pull-out chuck device 5 chucks the leading end 4 of the film 1 (the cut end by the cutting device 12) located near the feed holding roller 8B on the pull-out transfer side and pulls out the film 1 to the pull-out transfer position, the tension mechanism is moved. 3 keeps the film 1 stretched to a predetermined force and draws it from the film supply unit 3 and continuously supplies it.

This film is pulled out in a folded state with the upper part being on the opening side, and the vertical sealing device 6, the vertical cutting device 7, the feeding and holding roller 8A, the opening device 9, the feeding and holding roller 8B, the separating and cutting device 12, and the horizontal sealing device. The drawing tip 4 is chucked to the film pulling chuck device 5 via the device 10.

In this state, the film 1 is heat-sealed (vertical seal) from the folded bottom portion to the upper opening slightly to the front by the vertical seal device 6, and the bottom of the film 1 is cut by the vertical cutting device 7 along the vertical seal portion 14. From the top to the top opening slightly to the front.

Further, between the feed clamping rollers 8A and 8B,
The upper openings of the film 1 are clamped by the opening device 9 and moved to the opposite outer sides, respectively, and are held in an open state from the superposed state. However, the package 15 is put in and stored in the film 1 which is divided but in the 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 feed holding roller 8B and the film pulling chuck device 5) is heat-sealed (horizontal seal) by the horizontal sealing device 10 and closed, and further separated by the separating and cutting device 12. The film 1 is cut 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 portion is cut to separate the film 1 (the dividing bag 16) from the succeeding one.

Then, the film feeding device 13 is operated to discharge and move the separated bag 16 (packaged film bag), and the film pull-out chuck device 5 returns to the rear again and again draws the tip 4 (the cutting device 12). ), And pull out and transfer the divided bag in which the package 15 has been stored.

As described above, the vertical sealing, the formation of the vertical cutting edge, the opening, the storage of the package, the horizontal sealing, the cutting and the cutting, and the discharge and transfer are sequentially repeated, and the film bag (the dividing bag 16) in which the package 15 is continuously sealed is continuously provided. ) Is automatically packaged.

Further, each configuration and each part will be described.

The film 1 is formed by folding a transparent resin film having a predetermined width and polymerizing it to form a strip, and employs a film which can be heat-sealed.

Next, the film supply unit 2 which is the gist of the present invention
Next, 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 pulled out vertically from the supply roll 17 in a folded state in which the upper part is on the opening side. In addition, this pulled out film 1
Are transported via a fixed guide roller 18A, a movable guide roller 19 and a fixed guide roller 18B.
It is configured to be arranged to.

The tension mechanism 3 is, as shown in FIG.
The guide roller 19 is connected to the film unloading chuck device 5.
The guide roller 19 is provided with an urging member 20 for urging the film 1 in the opposite direction to the pulling operation.

In this embodiment, an urging weight 20 is provided on the guide roller 19 via a wire as the urging body 20, and an urging force is applied to the guide roller 19 by the load of the urging weight 20, so that a tension of a predetermined pressure is applied. Film 1

Further, the urging body 20 is provided with an urging force reducing device 41 for eliminating or reducing the urging force of the urging member 20 on the guide roller 19. It is configured to operate when the drawer is movable.

In the present embodiment, a cylinder device 41 for lifting the biasing weight 20 is provided as the biasing force reducing device 41, and the biasing weight 20 is lifted in synchronization with the drawing of the film pull-out chuck device 5, and this biasing force is applied when the film is pulled out. The pull-out resistance by the film pull-out chuck device 5 is reduced so that the weight of the weight 20 does not become a resistance.

In this embodiment, when the initial film setting is completed, the guide roller 19 is automatically moved to the position of the position detecting sensor (not shown) of the guide roller 19 against the urging body 20 to supply the roll. There is provided a reverse rotation driving device 44 which is moved by reversely driving the film 17 and rewinding the film 1.
Thereby, the tension by the urging 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 at a small interval of two, and as shown in FIG. Heat sealing.

As shown in FIG. 5, a heat sensor 21 is attached to the heat seal base 22 of the vertical seal device 6 (and the horizontal seal device 10 described later), and the heat sensor 21 controls the temperature of the heat seal base 22. Is detected, and the control section 42 controls the heat sealing temperature (amount of electricity) and the heat sealing time, thereby achieving an optimum sealing process and reducing power consumption.

Also, terminal portions at both ends of the heat seal base portion 22
Attach the terminal part 23 to the heat seal base 22 via a leaf spring 24 so that the terminal part 23 can move freely. As a result, the terminal 23 moves via the leaf spring 24 to prevent the connection line from being cut at the terminal 23.

When the film 1 adheres to the vertical sealing device 6 after heat sealing, the film 1 is peeled off.
As shown in FIG. 6, air blow devices 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 can be considered, but the peeling regulation by this shaft is simply a vertical sealing device 6.
A vertical cutting device 7 or an opening device 9
Therefore, in the case of the present apparatus in which the movement of the film 1 is necessary, there arises a problem that the film 1 is caught on the shaft.

Therefore, the air blow device of this embodiment
Reference numeral 25 denotes an excellent peeling device which does not cause a support for 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, a film 1 is formed between the vertical sealing portions 14 and 14 which are heat-sealed in two rows by the vertical sealing device 6.
The film 1 is cut from the folded bottom portion to just before the upper opening, and the film 1 is cut off and cut, so that the upper portion is slightly cut off.

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 the film 1 to the bottom.
At the time of piercing 26, the film 1 is configured to pierce into the film 1 while being rotated downward as shown in FIG.

Conventionally, this type of cutter blade simply stabs the film 1 at a right angle, but the film is displaced and the cutting is not smooth.
However, there has been such a problem that the film is displaced and the transfer of the film is caused. However, this problem has been solved by adopting a flattening method.

At a predetermined interval after the vertical sealing device 6 and the vertical cutting device 7, feed clamping rollers 8A and 8B are provided.
The feeding of the film 1 is improved, and the opening device 9 has an opening holding function.

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

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

The opening device 9 has a mechanism in which the superposed upper edges of the film 1 which has passed through the feeding and holding rollers 8A are passed through the holding movable member 27 and held by the feeding and holding rollers 8B. In the case where the holding movable member 27 is opened from the initial state, the holding movable members 27 are operated to hold the upper edges respectively, and the holding movable members 27 are moved outward to hold the opening state.

A charging section 28 for charging the package 15 is provided above the bag opening.

In the figure, reference numeral 29 is a small bag packaging machine, 30 is a double conveyor (package 15) transport conveyor, 31 is a small bag storage section, 32 is an input conveyor, 33 is a sorting device, and 34 is a defective continuous bag. In this embodiment, a large number of small bag packages by the same type of packaging device (small bag packaging machine) are fed into the device as a packaged product 15 for further packaging.

Next, the film extracting chuck device 5 will be described.

The leading end 4 (the cutting edge of the cutting / cutting device 12) which is to be protruded by the feeding / holding roller 8B is chucked and pulled, and the film 1 is pulled out and transported. The chuck portion 35 is drawn out and moved more in the transfer direction by a predetermined distance.

The chuck portion 35 is provided with a rubber material on the holding surface as shown in FIG. 9 in order to improve the chuck holding force. Further, as shown in FIG. 10, a configuration may be adopted in which the configuration is made at the time of wide-angle opening and closing, and uneven surfaces are formed on the holding surface so that the holding is easy and the holding force is improved.

Further, the leading end 4 of the drawer projecting from the feed holding roller 8B is bent due to a bending phenomenon or the like.
In order to prevent it from becoming difficult to be pinched, a drawback tip 4 is provided with a restricting guide rod 36 for preventing bending and is provided opposite to the feed roller 8B. It is configured to be clamped.

Next, the separating and cutting apparatus 12 will be described.

The cutting device 12 is provided with the vertical cutting device 7.
Is cut so as to be connected to the cutting edge 11 cut off by the cutting, the horizontal sealing device 10 is finished, and the film bag (divided bag 16) enclosing the package 15 is cut off and cut.
It is provided in the vicinity.

As shown in FIG. 3, the cutting device 12 is provided with a cutter blade 40 so as to be tiltable so as to tilt and cut an upper portion of the vertical cutting device 7.

Simply cutting vertically does not allow for good separation and cutting because the cutting edge 11 is not directly connected to the cutting edge 11 already cut. Conventionally, the upper edge of the cutting edge 11 is previously cut horizontally. Although a troublesome process such as forming an edge was necessary, this oblique cutting method of the present embodiment has solved the problem reliably.

Further, the cutting edge (drawing tip 4) protrudes in a triangular shape by the inclined cutting, and the effect of improving the chuck by the film extracting chuck device 5 is also exhibited.

Next, the horizontal sealing device 10 will be described.

The horizontal sealing device 10 is disposed between the feeding and holding roller 8B and the film pulling chuck device 5 at the pulling-out moving position. In the present embodiment, a bag air vent hole 37 is formed so as not to intersect with the vertical seal portion 14 at one side corner portion.

Next, the film feeder 13 will be described.

A conveyor device is arranged from the middle of the opening device 9 to a position below the horizontal 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 provided in a state of being connected to the film feeding device 13, and the bottom of the film 1 is fitted into the center of the receiving plate 38, and A guide groove 39 is formed to guide the transfer of the sheet.

In this embodiment, the feeding and holding roller 8A is synchronized with the drawing movement of the film drawing chuck device 5.
8B is fed and rotated, and the film feeding device 13 is ejected and driven. Further, as described above, the urging force of the urging body 20 which is the tension pressure by the urging force reducing device 41 does not become a resistance, so that a large amount of packaging is performed. The object 15 is inserted and stored, and is configured to enable smooth transfer even if the weight is heavy.

[0059]

As described above, the present invention is constructed as described above. Therefore, even if the film bag is designed so as to enclose a large amount of packages and a large tension is applied to the film, the tension is not applied when the film is pulled out. At least not all of the resistance of the film drawer is obtained, the drawing force at the time of film drawing is reduced, and an excellent packaging device capable of reliably and quickly realizing automatic packaging is provided.

Further, the present invention provides a film having a predetermined tension.
The guide roller is provided to provide
The urging body that urges in the direction opposite to the
Because of the weight, it is attached to the movement displacement like a spring.
The force does not increase, but is affected by the weight of the biasing weight.
Apply tension to the film with a constant bias
Can be.

Further , the biasing body is constituted by the biasing weight as described above.
This makes it possible to further
Urging force reducing device to eliminate or reduce tension
Is a cylinder device for lifting the biasing weight
Since any driving means can be used, a simple configuration can be achieved.
And the bias force disappears when the film drawer moves.
The operation control of this urging force reduction device is also easy.
This is an epoch-making packaging device with extremely high practicality.

[Brief description of the 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 cutting a film 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 the present embodiment.

FIG. 5 is an explanatory enlarged view of the vertical sealing device of the present embodiment.

FIG. 6 is an operation explanatory view of the air blow 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 at the time of chucking of the film pull-out chuck device of the present embodiment.

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

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

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

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

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Film 2 Film supply part 3 Tension mechanism 4 Pull-out tip 5 Film pull-out chuck device 6,10 Heat sealing device 7,12 Cutting device 9 Package storage device 19 Guide roller 20 Urging body (urging weight) 41 Urging force reducing device (Cylinder device)

Claims (1)

(57) [Claims] 1. A film to supply the film supply unit pulled out film of a predetermined width is provided a tension mechanism for tensioning a predetermined force, the film supply unit to the film pull-out chuck device for引動by clamping the lead tip of the film and provided on the opposite side, between the film supply portion and said film pull-out chuck device, heat sealing apparatus, package storage device, the packaging apparatus provided with a cutting device, the film to be pulled out supplied to the film supply unit A guide roller for winding and disposing is provided, and the guide roller is movably provided by pulling out the film by the film pull-out chuck device, and the guide roller is attached to the guide roller in a direction opposite to the direction in which the film can be drawn. and attaching a biasing body consisting of biasing the weight of energizing constituting said tensioning mechanism, to the Guy <br/> Dorora A biasing force by the biasing member has the urging weight
A packaging device, comprising: a biasing force reducing device that disappears or is reduced by raising the biasing force, and the biasing force reducing device is configured to be operated when the film pull-out chuck device is being pulled out.