JP3537178B2 - 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 packaging an object to be packaged by using a resin tube film as a packaging material.

[0002]

2. Description of the Related Art When packaging an object to be packaged by using a resin tube film, as shown in FIG. Then, the bag mouth portion is cut along the cutting line B by a cutter to separate the bag C from the tube film F, and the bag mouth portion is opened by, for example, vacuum means D, D to be filled with the article to be packaged. A method of sealing the mouth will be adopted.

[0003]

By the way, in order to form the bag C from the tube film F as described above, it is necessary to supply the tube film F from above to the vacuum means and the heat sealing means and cutter (not shown). Supply means will be provided. Therefore, even if a hopper for filling the articles to be packed is arranged above the supply means, the articles to be sent out from the hopper hit the supply means and the filling cannot be performed. Therefore, a filling station is provided near the bag forming station for performing the heat sealing and cutting, and the cut bag is transferred to the filling station, and filling is performed from a hopper provided in the filling station. In addition, the packaging device becomes complicated, large, and expensive, and there is a limitation in increasing the packaging speed.

Accordingly, an object of the present invention is to provide a packaging apparatus capable of forming a bag and filling an object to be packaged in a single station.

[0005]

That is, according to the present invention, a portion of a resin tube film to be a bag bottom is sealed with a heat seal, and the tube film is fed downward.
A packaging device that cuts a bag mouth portion, expands the bag mouth portion, fills the packaged object, and then seals the bag mouth portion with a heat seal. Seal and
And a guide member for supplying a tube film to the bag forming portion, above the bag forming portion for cutting the bag mouth portion and expanding the bag mouth portion, and for filling an article to be packaged located immediately above the guide member. A hopper is provided, the guide member is configured to advance immediately below the hopper when supplying the film, and to retract from immediately below the hopper prior to filling of the article to be packaged. A shutter is integrally mounted so as to close the delivery port of the hopper when the plate moves forward and open when the plate moves backward.

[0006]

According to the above construction, since the guide member for feeding the tube film can be moved back and forth, even if the hopper is disposed immediately above the guide member, the hopper can be sent out when filling the packaged object. Since the guide member can be retracted from directly below the mouth, the above-mentioned filling is not hindered. For this reason, by directly disposing the hopper, the bag can be formed and the object to be packed can be filled at the same station.

Further, since the shutter for opening and closing the delivery port is attached to the guide member, the movement of the guide member and the movement of the shutter are interlocked, so that the opening and closing are performed with good timing, and especially the speed of opening timing is increased. Can be achieved.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

In the packaging device shown in FIGS. 1 and 2,
The resin tube film F is wound in a roll shape,
The film roll F1 is set at a predetermined position on the back of the apparatus main body 1. Further, the tube film F pulled out from the film roll F1 is guided by the guide rollers 2,
It is supplied to the upper surface of the apparatus main body 1 through the rollers 2 and 2 and the dancer roller 3. On the other hand, a frame 4 for sliding the tube film F to the front side of the apparatus main body 1 is provided on the upper surface of the apparatus main body 1, and a lateral opening 5 is formed at an appropriate position of the frame 4. An idler (rubber roller) 6 is rotatably supported below the portion 5, and a drive roller (rubber roller) 7 which rotates in contact with the idler 6 is supported above, and the drive roller 7 is rotated by a stepping motor (not shown). It has been made.

Therefore, the tube film F is pulled out from the film roll F1 by rotating the driving roller 7.

A guide member 8 is provided below the frame 4.
Is arranged. The guide member 8 is a tube film F fed by the drive roller 7 and the idler 6.
Which is formed of a plate, the tip of which protrudes from the front surface of the apparatus main body 1 and the tip of which is bent downward, and which is located slightly forward of the bent portion 8A. The connecting member 9 is mounted on the supporting member 8A, and a film passage 10 is formed between the bent portion 8A and the connecting member 9. Then, the tube film F is sent to the lower bag forming section (also serving as the filling section in the present invention) 11 through the film path 10.

In this case, the guide member 8 is connected to a drive rod 12 projecting from the apparatus main body 1, and is moved back and forth between a forward position shown by a chain line and a retreat position shown by a solid line in FIG. The hopper 13 for filling an article to be packaged is supported by the frame 14 and disposed directly above. A hopper 13 is provided on the upper end of the connecting member 9.
A shutter 14 for opening and closing the outlet of the
When the guide member 8 moves forward, the shutter 14 closes the delivery port, and when the guide member 8 retreats, the shutter 14 also retreats to open the delivery port. The tube film F is processed by being fed down along a center line (hereinafter, referred to as a film processing center O) of the hopper 13 shown in FIG. The film path 10 is advanced until it reaches the film processing center O.

A pair of left and right drive rods 15,
15 are projected in parallel with an interval between which the tube film F can pass, and these rods 1
A cutter holding bar 16 is attached between the front ends of the cutter holders 5 and 15, and a cutter 17 is attached to the front side of the apparatus main body of the cutter holding bar 16. Further, a heater support bar 18 is attached to the drive rods 15 and 15 near the cutter holding bar 16 and at a position close to the apparatus main body. In this case, the heater support bar 18 is slidably attached to each of the drive rods 15, 15, and is connected to the cutter holding bar 16 by a spring 35.

A pair of upper and lower heaters 20A and 20B are mounted on the surface of the heater support bar 18 on the apparatus main body side, and an opening 21 is formed between the heaters 20A and 20B. It is inserted in a state where the tip does not protrude toward the apparatus main body side than the heater support bar 18.

Corresponding to the heater support bar 18, the crimping bar 2 is located closer to the apparatus body than the film processing center O.
2 is slidably attached to the drive rods 15, 15, and another drive rod 23 is connected to the crimp bar 22. The pressure bar 22 and the heater support bar 18 are driven by the drive rods 15 and 23 in a direction in which they are relatively separated from each other, and hold the tube film F from front and rear by relative approach.
Further, to these bars 18 and 22, vacuum heads (not particularly limited) 36 and 36 which are well-known for expanding the bag mouth are attached.

A pair of chucks 24 are provided below the bars 18 and 22 and at left and right positions. The chucks 24, 24 include a fixed block 25,
A slider 26 mounted thereon, guide pins 27, 27 attached to the fixed block 25 so as to protrude toward the counterpart chuck, and a guide pin 27, 27
Support block 28 slidably mounted on 27
And pins 29 and 2 on the support block 28, respectively.
An L-shaped lever 32 having a pair of front and rear chuck claws 30 and 30 supported so as to rotate around the center 9, and first links 31 and 31 connecting the slide block 26 and the chuck claws 30 and 30. Is connected to the slider via the second link 33. In this case, the slider 26 and the first links 31, 31 constitute a toggle mechanism for opening and closing the chuck claws 30, 30.

Therefore, when the L-shaped link 32 is rotated by the driving means 34 from the solid line state in which the chuck claws 30, 30 shown in FIG.
6, the first links 31, 31 are pushed inward, and the toggle action causes the chuck claws 3 to move.
The pins 0, 30 rotate around the pins 29, 29, the chuck claws 31, 31 are closed, and the movement of the slider 26 causes the entire chuck 24 to move in a direction approaching the counterpart chuck.

The above-described guide member 8, drive rod 1
The drives 2, 15, and 23 are driven by a well-known cam mechanism built in the apparatus main body 1.

Next, the operation will be described.

The guide member 8 is retracted, and the heater support bar 1 is located across the film processing center O.
2, the film is fed by the rotation of the drive roller 7 and the guide member 8 advances, whereby the feed port of the hopper 13 is closed by the shutter 14. .
Further, the tube film F is sent downward from the film path 10 reaching the film processing center O. Also,
The articles to be packaged are supplied to the hopper 13 while the outlet is closed.

Then, after a fixed amount of film has been fed, the cutter holding bar 1 is driven by the drive rods 15 and 23.
6 and the heater support bar 18 and the pressure bonding bar 22 are moved in the approaching direction, and the heater support bar 18 and the pressure bonding bar 22 sandwich the tube film F. At that time, only the upper heater 20A of the upper and lower heaters 20A and 20B is energized, and a heat seal is applied to a portion serving as the bag bottom of the next bag. On the other hand, the cutter holding bar 16 is
8 is moved so as to compress the spring 35, the cutter 17 is projected from the opening 21 of the heater support bar 18, and the lower side of the film portion heat-sealed by the upper heater 20A is cut. Cut off the side bag and form the bag mouth of this bag. It is needless to say that the bag bottom portion of the separated bag is sealed by the preceding packaging operation. That is, heat sealing is performed by the upper heater 20A.

Next, the bag mouth is adsorbed from the front and rear by the vacuum heads 36, 36, and the heater support bar 18 and the press-fitting bar 22 are moved away from each other, so that the bag mouth is expanded. When moving, the chucks 24, 24 are driven from the solid line state in FIG.
24 holds both sides of the bag mouth. Since both sides of the bag mouth are sucked by the vacuum heads 36, 36, the bag mouth is expanded by moving away from each other. At that time, the guide member 8 in the forward state is retracted and retracted from immediately below the feed port of the hopper 13, and the feed port is opened by the lateral movement of the shutter 14 interlocked with the guide member 8, so that the articles in the hopper are fed. And filled into bags.

After the filling, the heater support bar 18 and the pressure-bonding bar 22 move closer to each other to clamp the bag mouth. At this time, only the lower heater 20B is energized, and the bag mouth is sealed by applying a heat seal to the bag mouth. Then, the bar 18 and 22 are moved away from each other to complete one cycle of the packaging operation. I do.

As described above, since the guide member 8 that controls the supply of the tube film F is moved back and forth, the filling can be performed without any trouble by retracting the guide member 8 from the delivery port of the hopper 13 at the time of filling the article to be packaged. . For this reason, the hopper can be arranged directly above the guide member 8, so that the structure of the packaging device can be simplified, reduced in size and cost can be reduced, and the packaging speed can be increased. In addition, since the shutter 14 is attached to the guide member 8 to open and close the outlet of the hopper 13 by the movement of the guide member 8, a drive device for the shutter 14 is not required separately, and accordingly, Cost reduction can be achieved. Further, since the movement of the shutter 14 is simultaneous with the movement of the guide member 8, the opening / closing timing is improved, and the time loss particularly when opening the feed port can be reduced. That is, after the guide member 8 is retracted, the movement of opening the shutter 14 is eliminated.

[0025]

As is apparent from the above description, according to the present invention, since the guide member for feeding the tube film can be moved back and forth, even if the hopper is arranged directly above the guide member, Since the guide member can be retracted from immediately below the outlet of the hopper when filling the packaged object, the above-mentioned filling is not hindered. Therefore, by directly disposing the hopper, the molding of the bag and the filling of the packaged object can be performed at the same station, so that the structure of the packaging device can be simplified, downsized, the cost can be reduced, and the packaging speed can be increased. .

Further, since the shutter for opening and closing the delivery port is attached to the guide member, the movement of the guide member and the movement of the shutter are interlocked, so that the opening and closing are performed with good timing, and especially, the speed of opening timing is increased. Can be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic view of a packaging device according to an embodiment of the present invention.

FIG. 2 is a sectional view of a main part of the packaging device.

FIG. 3 is a front view of the main part.

FIG. 4 is an operation diagram of a chuck.

FIG. 5 is an explanatory diagram of a conventional example.

[Explanation of symbols]

1 Device body 8 Guide member 11 Bag forming part 13 Hopper 14 Shutter

Claims (1)

(57) [Claims] 1. A portion of a resin tube film serving as a bag bottom portion is sealed by heat sealing, and after feeding down the tube film, a portion serving as a bag mouth portion is cut and the bag mouth portion is expanded. A packaging device that opens and fills with an object to be packaged, and then seals the bag mouth by heat sealing, wherein the bag bottom is heat sealed and the bag mouth is cut to expand the bag mouth. A guide member for supplying a tube film to the bag forming portion and a hopper for filling an article to be packaged located immediately above the guide member are provided above the bag forming portion to be opened. Forwardly, and retracted from immediately below the hopper prior to filling of the article to be packaged, and the guide member closes the outlet of the hopper when the guide plate is advanced, and when retracted, Open A packaging device, wherein a shutter is integrally mounted.