JPH092421A - Device for filling and packing bag - Google Patents

Abstract

PURPOSE: To fully stretch the upper and lower parts of a bag body without allowing the bag body to loosen so that the bag body can be filled with a material as intended in quantity. CONSTITUTION: A bag body-pressing part 26 extends upward from a position on one side of a center line C, in an arrangement having the center line C connecting the position of a pair of upper suction devices 16, 16 to that of a pair of lower suction devices 20, 20 when the suction devices in each of the pairs are closest to each other, and crosses the center line C, having the forward end 24a at a position on the opposite side. The lower end 24b of the bag body- pressing part 24 is placed above the axis 26 of arm members 22a, 22a and fixed to one of the arm members, that is, on one side. The bag body-pressing part 24 presses the middle of the bag body 14 into the other side when the suction devices 16, 16, 20, 20 in each of the pairs come closest to each other and their suction works on the bag body 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag filling and packaging apparatus for contents.

[0002]

2. Description of the Related Art Today, a bag-filled product in which a product is enclosed in a bag is not only convenient for storage and transportation as compared to a canned product or a bottled product, but also has a low cost and is extremely easy to open. Due to the advantage of being applicable, more and more items are applied.

The bag body includes a bag body having a substantially tubular side film portion and a folded portion fixed to the inside of the lower portion of the side film portion in a state of being bent upward. This bag is called a so-called standing bag in which the lower end of the side film part is expanded by bagging so that the packed product can be kept upright, and is convenient for display and handling after opening. It is often used. This type of bag is used as a container for articles such as liquids such as detergents and cosmetics, powders, granules and the like.

A shaping device, a filling device, which sequentially takes out and holds the flatly folded bags one by one in order to efficiently pack the items into the bags in a short time, and opens and shapes the bags. An automatic bag-filling device has been developed, which is sequentially transferred to a degassing device, a sealing device, a seal cooling device, etc. to complete bag filling (for example, Japanese Utility Model Publication No. 57-56968).
58-16488).

As described in the above-mentioned publication, in the conventional filling and packaging apparatus, when filling an article from the upper opening of the bag body, the shaping apparatus preliminarily sucks the upper center portions in the width direction of both sides of the bag body. The upper opening is opened by sucking with a disc and separating each suction disc in opposite directions. Then, air is blown into the bag body through the upper opening to inflate the bag body.

[0006]

However, in the bag body having the folded portion at the lower portion, the lower portion of the bag body may remain closed or may not be sufficiently opened even if the upper opening is opened and air is blown into the bag body. However, there is a problem that the bag cannot be filled with a sufficient amount of goods as it is.
In particular, a thick resin bag body and a bag body mainly made of metal foil have high rigidity and are difficult to deploy.

On the other hand, in the filling machine, the upper suction plate is opened at the upper part of the bag body to blow air, and both lower surfaces of the bag body are adsorbed by the suction plate and both sides are pulled and expanded. It is possible.

However, in the case of expansion, when the space between the upper and lower suction cups of the suction cup is increased, the bag body is pulled and the suction position of the suction disc shifts, which causes However, there is a problem that the suction board cannot apply suction force to the bag body and cannot hold the bag body, and the bag body falls apart. For example, in the case of a small soft drink bag, it is considered that the deviation is small and the bag is difficult to separate, but especially in the case of a refilling detergent with a large amount of contents, the size of the bag Is large, the opening distance of the suction cup is large, and the distance that it moves down is also large,
Easy to drop.

The present invention has been made to solve the above-mentioned problems of the prior art, and the upper and lower portions of the bag body are sufficiently expanded without separating the bag body so that a target amount of content is put in the bag body. An object is to provide a device for filling and packaging the contents of a bag that can be filled.

[0010]

In order to solve the above-mentioned problems, the invention according to claim 1 has a substantially tubular side membrane portion and a folded portion fixed to the inside of the lower portion of the side membrane portion in a state of being bent upward. A device for filling contents into a bag consisting of a container, in which the side membrane portion is folded with the inner peripheral surface in contact with the bag, and the upper opening and the lower part of the bag are expanded to fill the contents. A pair of upper adsorbers that adsorb both outer surfaces of the bag upper part in a wrapped state, and an upper expanding part that moves the upper part adsorbers close to and away from each other to widen the bag upper opening,
A pair of lower adsorbers for adsorbing both outer surfaces of the lower part of the folded bag and a pair of arm members intersect each other and are rotatably supported by a common axis at the intersection, and further the lower adsorbers on the upper end. The chambers are attached so as to face each other, and the arm members rotate around the shaft to move the lower suction chambers closer to or further apart from each other to expand the folding portion and expand the lower portion of the bag body. The lower extension part and the other side that extends upward from one side sandwiching a center line connecting the positions when the pair of upper adsorbers and the pair of lower adsorbers are close to each other and has the tip end beyond the center line. And the lower end is fixed to at least the one side above the shaft of the arm member and is fixed to at least the one side. The central part of (is adsorbed by the adsorber Having the configuration of the contents filling and packaging apparatus of the bag body, characterized in that it comprises a bag pressing means for pressing the other side portion) of the bag body except min.

[0011]

According to the first aspect of the invention, the contents are filled in the bag body including the substantially tubular side membrane portion and the folded portion that is fixed to the inside of the lower portion of the side membrane portion in an upwardly bent state. At this time, the upper adsorption device adsorbs the upper part of the bag body, the lower adsorption device adsorbs the lower part of the bag body, and the upper expansion part and the lower expansion part are operated to operate the upper adsorption part and the lower adsorption part. Separate.

Here, the bag pressing means extends upward from one side across the center line connecting the positions of the upper suction unit and the lower suction unit when the upper suction unit and the lower suction unit are close to each other, and the other end whose tip portion exceeds the center line. Since it is located at, the central portion of the bag body is pressed to the other side before the adsorbers come close to each other and suck the bag body.

Therefore, when the upper and lower suction devices are close to each other and suction the bag, the tip of the bag pressing means is located on the other side of the center line, so that the bag is partially separated from the center line. When the upper and lower adsorbers are separated from each other, the distal end portion of the bag body pressing means moves away from the bag body toward the center line and further moves to one side. The slack that is pushed by the tip of the bag pressing means remains.

Further, when the lower extension portion is opened, each arm member performs an arcuate movement about the axis, so that the lower extension portion moves laterally to the pair of lower adsorbers and also moves downward.
As described above, since the bag body adsorbed by each adsorber has slack, the slack only extends by the downward movement of the lower adsorption part, and the bag itself is pulled with respect to the upper adsorber. Since it does not exist, there is no deviation and it does not come off from the upper suction device.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 4 are explanatory views of a bag content filling and packaging apparatus according to an embodiment of the present invention, and FIG. 1 mainly shows a bag body shaping machine 10 and a content filling machine 12 of the filling and packaging apparatus. 2 is a side view of the bag body shaping machine 10, and FIG. 4 is an explanatory view of the opened state of the bag body 14.

As shown in FIGS. 1 to 3, in the filling and packaging apparatus of the embodiment, before the bag 14 is filled with the contents by the contents filling machine 12, the bag is covered with the inner peripheral surface of the side film portion 14a. From the state in which the parts are in contact with each other and the folding part 14b is folded, the upper opening 14c and the lower part 14d of the bag body 14 are expanded to fill the contents as the product to a target amount.

As shown in FIG. 4, the bag body 14 comprises a substantially tubular side film portion 14a and a folded portion 14b fixed inside the lower portion 14d of the side film portion 14a in a state of being bent upward. Is.

As shown in FIGS. 2 to 4, the bag shaping machine 10 is shown.
The upper suction devices 16, 16, the upper expansion part 18, the lower suction devices 20, 20, the lower expansion part 22, and the bag pressing part 2
4 are provided.

The upper adsorbers 16 and 16 are composed of a pair of so-called suction cups which adsorb both sides of the outer surface of the upper portion of the bag body 14 which is in a flat state in the folded state. A well-known suction mechanism such as is connected (not shown) to suck the bag body 14 on the suction surface.

The upper expanded portion 18 is formed by the upper adsorption devices 16 and 1, respectively.
In a state where 6 are opposed to each other and are moved toward and away from each other along a substantially straight line to widen the bag upper opening 14c, the upper suction devices 16 and 16 are attached to the suction device opening / closing shaft 18a by a mounting plate 18b, Each upper adsorber 16 is fixed by a bolt or the like at 18b, and each upper adsorber 16 is operated by the operation of the adsorber opening / closing shaft 18a.
16 is opened and closed.

The lower suction devices 20, 20 are composed of a pair of so-called suction cups for suctioning both sides of the outer surface of the lower portion 14d of the bag body 14 in a folded state, and a well-known suction mechanism such as a vacuum pump is used. It is connected (not shown) and sucks the bag body 14 at the suction surface.

The lower extension portion 22 includes a pair of arm members 22.
a, 22a intersect, and intersection 22a1 is rotatably supported by a common shaft 26, and further arm members 22a, 2a.
The pair of lower adsorbers 20 above the shaft 26 of 2a,
20 are attached to face each other, and the shaft 26
The respective arm members 22a, 22a rotate about the center of the bag to move the lower suction devices 20, 20 closer to and further apart from each other, and thereby the bag 1
4 of the folding part 14b and the lower part 14 of the bag body 14
It is an extension of d. The shaft 26 is a bag shaping machine 10.
It is fixed to the frame 29. In addition, the pair of arm members 22a, 22a are disposed below the shaft 26 by the roller 3
0 and 30 are rotatably supported.

In the embodiment, the lower adsorbers 20, 20 are
Is fixed to the upper part of the arm members 22a, 22a above the shaft 26 by brackets 22b, 22b so that the position can be adjusted. Also, the arm member 22 of the lower extension 22
Below the a and 22a, a cam member 2 having a triangular shape is provided.
8 are provided, and the rollers 30 are brought into contact with the two oblique sides on the upper side of the triangular cam member 28. Further, the cam member 28 is the frame 2
The vertical drive shaft 32 is provided on the upper and lower sides of the arm member 22 so as to be vertically driven. The vertical movement of the cam member 28 causes the arm member 22 to pass through the roller 30.
The a and 22a rotate about the shaft 26 and operate in substantially the same manner as the scissors, whereby the lower adsorbers 20 and 20 move toward and away from each other.

The bag pressing portion 24 has one side (in FIG. 2) sandwiching a center line C connecting the positions when the pair of upper suction devices 16 and 16 and the pair of lower suction devices 20 and 20 approach each other. 2) extends upward from the left side) and the tip portion 24a is located on the other side (right side in FIG. 2) beyond the center line C, and the lower end portion 24b has the shaft 26 of the arm member 20a.
Which is fixed to the one side (may be provided on both the one side and the other side) above each other, and the adsorbers 16, 16 and 20, 20 are in close proximity to each other. When the body 16 is adsorbed, the substantially central portion of the bag body 16 is pressed to the other side.

In the embodiment, the bag pressing portion 24 has a substantially "C" shape (may be a "C" shape) in a side view, and the lower end 24b of the bag pressing portion 24 has the above-mentioned one side. The bracket 22b of the side arm member 22a is fixed to the opposite side of the lower suction device 20 with a bolt. Also,
As shown in FIG. 4, the length in the width direction of the tip portion 24a is the bag 1
4 and has a rod-shaped restriction portion 24a1 at both ends of the tip end portion 24a for preventing the end portion of the bag body 14 from protruding.
Is protruding.

Above the upper adsorbers 16 and 16,
A funnel body 34 for opening the bag body is provided, the funnel body 34 is fixed to the tip of the vertical movement shaft 34a, and an air blowing hole 34b is formed in the funnel body 34. Also,
Reference numerals 36 and 36 denote bag body holding chuck portions for gripping the bag body 14 at both ends in the width direction, and when the bag body 14 is expanded, the respective intervals can be narrowed. Also, 3
Reference numeral 8 denotes a rotary disk in which a plurality of bag body holding chuck portions 36 are arranged around and rotate to sequentially convey the bag body 14 to each machine of the content filling and packaging apparatus while gripping the bag body 14. . Further, 40 is a filling nozzle of the filling machine 12.

The operation of the embodiment will be described. In the content filling and packaging apparatus of the embodiment, before the bag body 14 is filled with the content, the bag body shaping machine 10 expands the bag body 14 and shapes the bag body 14 into a shape capable of receiving the content. First, as shown in FIG. 2, the upper adsorption devices 16 and 16 adsorb the upper part of the bag body 14, and the lower adsorption devices 20 and 20 adsorb the lower part of the bag body 14. Then, as shown in FIG.
8 and the lower extension 22 to activate the upper adsorber 1
6 and 16 are separated from each other, and lower adsorbers 20 and 20 are separated from each other.

Here, the bag pressing portion 24 extends upward from one side with a center line C connecting the positions of the upper suction devices 16 and 16 and the lower suction devices 20 and 20 close to each other, and has a tip end portion. Since 24a is located on the other side beyond the center line C, when the adsorbers 16, 16 and 20, 20 are close to each other and adsorb the bag body 14, the central portion of the bag body 14 is located on the other side. Press on.

Therefore, the upper and lower adsorbers 16, 16
When 20, 20 adsorb the bag body 14 in close proximity to each other, since the tip end portion 24a of the bag body pressing portion 24 is located on the other side of the center line C, the bag body 14 is partially separated from the center line C. It is deviated (indicated by symbol r). Then, when the upper and lower suction devices 16, 16 and 20, 20 are separated from each other, the tip end portion 24a of the bag body pressing portion 24 is separated from the bag body 14 and approaches the center line C, and further moves to one side. The slack of the bag body 14 pressed by the bag body pressing portion tip portion 24a remains.

Further, the lower extension portion 22 is opened by
Since each arm member 22a, 22a makes an arc motion about the shaft 26, the pair of lower adsorbers 20, 20 move laterally as well as downward. As described above, since the bag body 14 in the state of being sucked by each of the adsorbers 20 and 20 has slack, the slack only extends by the downward movement of the lower adsorbers 20 and 20, and the bag body 14 itself. Upper adsorber 1
Since it is not pulled with respect to 6 and 16, there is no displacement, and the bag body 14 does not come off from the upper suction devices 16 and 16.

In the bag, compared to that for soft drinks,
In the case of a refilling detergent with a large amount of contents, the bag size is large (for example, width 130 mm, length 260 mm),
The gap between the suction cups is large (90m between the suction cups above
m, the distance between the lower suction cups is 75 mm, and the downward distance is large (the downward distance is 12 mm), so the bag body can be easily dropped without the bag body pressing portion 24.

In the present embodiment, this is not the case, and the bag body 14 can be expanded sufficiently in combination with the air blown out by the funnel body 34 from the upper opening 14c while the bag body 14 is held securely. Therefore, the bag body 14 can be sufficiently filled with the target amount of contents such as goods.

[0033]

As described above, according to the present invention, the upper and lower portions of the bag body can be sufficiently expanded and the target amount of contents can be filled in the bag body without separating the bag body.

[Brief description of drawings]

FIG. 1 is an explanatory view of a bag-content filling and packaging device according to an embodiment of the present invention, which is a plan view of essential parts mainly showing a bag body shaping machine and a content filling machine of the filling and packaging device. is there.

FIG. 2 is a side view illustrating the operation of the bag shaping unit.

FIG. 3 is a side view illustrating the operation of the bag shaping unit.

FIG. 4 is an explanatory diagram of an open state of the bag body.

[Explanation of symbols]

 10 Bag Shaper 12 Content Filler 14 Bag 14a Bag Side Membrane 14b Bag Fold 14c Bag Opening 14d Bag Lower 16,16 Upper Adsorber 18 Upper Expanding 20, 20 Lower Adsorber 22 Lower Extension Part 22a, 22a Arm Part 22b, 22b Bracket 24 Bag Pressing Part 24a, 24b Tip of Bag Pressing Part, Lower End 26 Shaft 28 Cam 30 Roller

Claims (1)

[Claims] 1. A device for filling a bag body with contents, which comprises a substantially tubular side film part and a folded part that is fixed to the inside of the lower part of the side film part in an upwardly bent state. When the contents are filled and packed by expanding the upper opening and the lower part of the bag from the folded state where the inner peripheral surface is in contact with the bag, An upper suction device, an upper expansion part that moves the upper suction device close to and away from each other with the upper suction devices facing each other to widen the upper opening of the bag body, and a pair that sucks both sides of the outer surface of the folded lower bag body. And a pair of arm members intersect with each other and are rotatably supported by a shaft having a common intersection, and the lower suction device is attached to the upper end so as to face each other. Each arm member rotates to move the lower suction device closer One that sandwiches the center line that connects the position when the lower expansion part that moves to expand the folding part and expands the lower part of the bag body and the pair of upper adsorbers and the pair of lower adsorbers are close to each other The upper end is located on the other side beyond the center line, and the lower end is fixed to at least the one side above the shaft of the arm member,
A bag body pressing means for pressing the central portion of the bag body to the other side before the suction devices adjoin each other to adsorb the bag body, and a bag filling and packaging apparatus for a bag body.