JP2000103414A - Device for sealing mouth part of bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To greatly improve work efficiencies in comparison with a conventional sealing relying on a manual work by a method wherein when a mouth part of a bag of synthetic resin is fused, excessive air in the bag is compelled out of the bag by an urging member moving in contact with the surface of the bag. SOLUTION: On the upper side of a base frame 1, on which a bag B whose mouth part is sealed is mounted, twin holding members 3, on each of the opposed sides of which a heating part for heat seal is provided, are provided so as to move toward and away from each other. In each of the members 3, an urging member 4 is provided so as to protrude downward. When the mouth part of the bag B is sealed, the member 4 is pressed against the upper surface of the bag B and moved to compel excess air in the bag B to the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for sealing the mouth of a synthetic resin bag such as a plastic bag used as an inner container when storing food such as umeboshi in a plastic container. .

[0002]

2. Description of the Related Art In general, food such as dried plum is once sealed in a plastic bag or the like, then packed in a plastic container, and is sold and distributed in this state.

Here, it is necessary to seal the mouth of the bag containing the food so that the mouth is sealed. Conventionally, the mouth is sealed by tying the mouth of the bag with a rubber band or by attaching a metal ring. This was done by tying the mouth using a method called ringer stopper. And this work,
The work is done manually by the workers one by one.
Depending on the contents stored in the bag, it was necessary to prevent excess air from remaining in the bag in order to prevent its oxidation or to store the bag in a fixed outer container. .

Therefore, at the time of this work, conventionally, a suction nozzle has been inserted into the mouth of the bag to bind the mouth while sucking the air inside the bag.

[0005]

In the conventional sealing of the mouth portion of the bag described above, if the mouth portion is first bound using a rubber band, there is a possibility that a liquid leak may occur due to a capillary phenomenon depending on the contents stored in the bag. In order to prevent this, it was necessary to take measures such as doubling the bags.

In addition, when the metal ring is used for ringing, there is a problem in that the metal ring reacts to a metal detector for inspecting for foreign matter at the time of shipment.

Further, since the above-mentioned bundling of the mouth is performed manually, there is a problem that not only a person for this work is required but also the work efficiency is poor. At this time, if you insert a suction nozzle into the mouth of the bag and try to suck the air inside the bag, the flexible bag, such as vinyl, will stick around the suction port of the nozzle, and sufficient suction cannot be performed. However, there is also a problem that the working efficiency is further reduced.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems associated with the above-mentioned conventional operation of sealing the mouth of a bag.

[0009]

In order to solve the above-mentioned problems, the invention according to claim 1 of the present invention relates to an apparatus for sealing a mouth portion of a bag, comprising a synthetic resin whose mouth portion is fused and sealed. And a pair of holding members provided with a heating section for heat sealing on the opposing surface, and a direction in which the two holding members are brought into contact with and separated from each other. , A driving device for driving each of the pressing members in a direction of protruding and retracting below the holding members, and a base. When closing the mouth of the bag placed on top, the pressing member presses against the top surface of the bag, and is driven in the direction of the mouth of the bag in the pressed state to expel excess air in the bag. It is characterized by the following.

A second aspect of the present invention is characterized in that, in the configuration of the first aspect of the present invention, the base is limited to a base constituted by a belt conveyor.

According to a third aspect of the present invention, in the configuration of the second aspect, the holding member and the pressing member move in the horizontal direction in synchronization with the operation of the belt conveyor in a state of being in contact with the bag. And the requirement is added.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on illustrated embodiments.

FIG. 1 is an overall perspective view of an apparatus for sealing a mouth portion of a bag according to the present invention, and FIG. 2 is an enlarged perspective view of a main part thereof.
As shown in the figure, the bag mouth sealing device of the present invention includes a base 1 on which a belt conveyor 2 is provided, and a pair of holding members 3, 3 provided on the upper side of the base 1 so as to face left and right. And two pressing members 4 provided near each of the holding members 3.

The holding member 3 is an L-shaped angle-shaped member having an opening 3a at the center lower surface.
b, a heating section (not shown) for heat sealing is provided over its length direction. Each of the holding members 3 is attached to a tip of a driving rod 5a of a driving device 5 arranged in a lateral direction.

The driving device 5 is attached to the inside of a pair of support members 7, 7 provided so as to sandwich the base 1 so as to be height-adjustable by adjusting screws 8, 8, respectively.

The support member 7 is slidably mounted on a guide rod 9 provided in parallel along the side surface of the base 1.

The pressing member 4 is attached to the holding member 3 so as to be driven downward from an opening 3a of the holding member 3 by a driving device 6 provided inside the holding member 3.

In FIG. 1, reference numeral 10 denotes each driving device 5,
Reference numeral 12 denotes a guide for guiding the opening B 'of the bag B between the left and right holding members 3 and 3. In FIG. 2, reference numeral 11 denotes an air supply pipe for supplying compressed air to the driving devices 5 and 6.

The bag mouth sealing device of the present invention has the above configuration.

Next, the operation will be described. First, contents C such as umeboshi are stored in a container A having an open-top box shape called a barrel with a bag B made of synthetic resin such as vinyl interposed therebetween. Prepare the object whose mouth is to be sealed. And
In this state, the container A is placed on the front side of the base 1 (right side in FIG. 1).
When the container A is fed downward from the holding member 3, the container A comes into contact with a stopper (not shown), and the bag B is set at a predetermined position with its mouth B 'located between the holding members 3, 3. When the apparatus is operated by operating a foot switch (not shown) with the container A set at a predetermined position in this way, first, the driving device 6 of the pressing member 4 is operated, and the pressing member 4 is pinched. It is pushed downward from the opening 3a of the member 3. As a result, the pair of pressing members 4 and 4 come into contact with the upper surface of the bag B in which the contents C are stored on both left and right sides of the container A as shown in FIG. Next, in this state, the driving device 5 of the holding member 3 is operated, and the opposed holding members 3 are pushed out in a direction in which they are joined to each other. As a result, a pair of pressing members 4 in contact with the upper surface of bag B
4 are also driven in directions approaching each other, as indicated by the arrows in FIG. 3, and consequently act to push the air in the bag B out of the opening B '. Eventually, when the holding members 3, 3 come into contact with the bag B interposed therebetween, the opposing surfaces 3b, 3b
The bag B made of synthetic resin is melted by the heat of a heating unit (not shown) provided in the unit, and is fused at a surface in contact with the heating unit. As a result, the mouth portion B ′ of the bag B is hermetically sealed at the fused portion (indicated by reference numeral Ba in FIG. 4).

At the time of the above operation, the container A placed on the belt conveyor 2 is sent at a constant speed to the outlet side of the apparatus (the left side in FIG. 1), and the holding member is synchronized with this. 3 and the supporting member 7 supporting the pressing member 4
Along the same direction.

Then, as described above, the mouth B ′ of the bag B
Is completed, first, the driving device 6 of the pressing member 4 is operated, and the pressing member 4 in contact with the upper surface of the bag B is pulled up. Next, the driving device 5 of the holding member 3 is operated to drive the pair of holding members 3 holding the bag B in a direction away from each other.
Therefore, the bag B is released from the holding member 3 and the pressing member 4, and is sent to the outlet side (the left side in FIG. 1) of the apparatus by the belt conveyor 2 together with the container A. At this time, the support member 7
Is located at the entrance side of the belt conveyor 2 along the guide rod 9 (FIG. 1).
To the right) to prepare for the next sealing operation.

As described above, in the bag mouth sealing device of the present invention, when the contents C such as umeboshi are stored in the open-top container A called barrel filling, the container A is interposed between the container A and the container. The mouth B 'of the synthetic resin bag B is hermetically sealed.

In the illustrated embodiment, an example is shown in which a cylinder device that operates by air pressure is used as the driving devices 5 and 6. However, the driving devices 5 and 6 use the holding member 3 and the pressing member 4 to perform predetermined operations. As long as it can be driven in the direction, a motor or an electromagnetic solenoid may be used.

In the illustrated example, the belt conveyor 2 is attached to the base 1 and the supporting member 7 to which the holding member 3 and the pressing member 4 are attached is connected to the base 1 so that the bag sealing operation can be performed continuously. Although an example has been shown in which the movable member can be moved along the guide rod 9 in synchronization with the movement of the conveyor 2,
In the mouth sealing device of the present invention, the mouth portion B ′ of the bag B is
When sandwiching the bag B, it is sufficient that the pressing member 4 moves in contact with the surface of the bag B and expels the air in the bag B, and the belt conveyor 2 is not necessarily required, and the support member 7 is directly connected. , May be fixed to the side surface of the base 1. In this case, the setting of the bag at a predetermined position and the removal of the bag after the mouth is completely sealed may be performed manually.
It is desirable that the container in which the bag is stored is pushed out by the air cylinder, because the work can be easily performed and the work efficiency can be improved.

[0026]

As described above, the invention according to claim 1 of the present invention is a pressing member which moves in contact with the surface of a bag made of synthetic resin when the mouth of the bag is fused. Since the excess air in the bag is expelled, the working efficiency is significantly improved as compared with the conventional manual sealing of the mouth. Also,
There is no inconvenience of reacting to a metal detector for inspecting foreign substances like ringer stopper.

According to the second aspect of the present invention, the base on which the container is placed is a belt conveyor, so that the one whose mouth is sealed can be easily taken out. In addition to the effect, there is an effect that the work efficiency is improved.

According to a third aspect of the present invention, the holding member and the pressing member are moved in the horizontal direction in synchronization with the operation of the belt conveyor while being in contact with the bag.
There is an effect that the working efficiency of the mouth sealing device exhibiting the effects of the described invention can be further improved.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an embodiment of a bag mouth sealing device according to the present invention.

FIG. 2 is an enlarged perspective view of a main part of the mouth sealing device shown in FIG.

FIG. 3 is a simplified cross-sectional view for explaining the operation of the bag mouth sealing device according to the present invention.

FIG. 4 is a perspective view of the barrel-packed product after the mouth sealing operation is completed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Belt conveyor 3 Nipping member 3a Opening 3b Opposing surface 4 Pressing member 5,6 Driving device 7 Support member 8 Adjusting screw 9 Guide rod 10 Control panel 11 Air supply pipe A Container B Bag B 'mouth C Contents

Claims (3)

[Claims] 1. A base on which a synthetic resin bag whose mouth is fused and sealed is placed, and a base is placed facing the base, and a heating unit for heat sealing is provided on the facing surface. A pair of holding members, a driving device for driving the two holding members in a direction to contact and separate from each other, a pressing member provided in the vicinity of the lower end of each holding member so as to be able to move up and down, and And a driving device that is driven in a direction of protruding and retracting downward.When the mouth of the bag placed on the base is sealed, the pressing member presses against the upper surface of the bag, and A bag mouth sealing device which is driven toward the mouth of the bag to expel excess air in the bag. 2. The bag mouth sealing device according to claim 1, wherein the base is constituted by a belt conveyor. 3. The bag closure according to claim 2, wherein the holding member and the pressing member move in the horizontal direction in synchronization with the operation of the belt conveyor in a state of being in contact with the bag. apparatus.