JP2000062708A - Bag-making/filling/packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bag-making/filling/packaging machine for favorably producing a self-supporting bag by virtue of the advantage of a vertical type filling/packaging machine for making a bag and filling the bag with contents while feeding a film downward. SOLUTION: A bottom seal mechanism 30 and a top seal mechanism 40, which heat-seal both side ends of a folded film, respectively, are disposed, in such a manner as to be opposed to each other with a feed pipe 11 therebetween, on the underside of a bag-making folding mechanism 20 for folding the central portion of a sheet-like film in its width direction into a predetermined shape. Further, a side seal mechanism 60 for heat-sealing the film in a horizontal direction is disposed on the underside of both the bottom seal mechanism 30 and the top seal mechanism 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag-making filling and packaging machine for making a bag of a sheet-like film and filling a liquid or pasty product into the bag.

[0002]

2. Description of the Related Art Conventionally, while making a sheet-like film into a bag,
2. Description of the Related Art As a packaging machine for filling a liquid or pasty product into a bag, a vertical filling and packaging machine for feeding a film downward and filling the product is known. This type of vertical filling and packaging machine generally forms a tubular film by heat-sealing a bag-making guide for tubularly forming a sheet-like film and an edge portion of the tubularly-formed film. A vertical sealing mechanism, a squeegee roller that divides the product put into the tubular film and feeds the tubular film downward, and the empty filling part formed on the tubular film by the rotation of the squeegee roller is heat-sealed horizontally. It has a horizontal sealing mechanism for cutting.

On the other hand, one of the packaging forms is a self-standing bag. The self-supporting bag-shaped packaged product can be displayed in a store in a standing state by itself, and thus has been widely used in recent years as a packaging form replacing plastic and glass bottles and cans.

[0004] Generally, the bag making of the self-standing bag and the filling of the product are performed in separate steps. That is, a bag having a W-shaped bottom and both sides heat-sealed and only the upper end opened is prepared in advance, and in the filling step, the prepared bags are taken out one by one and conveyed horizontally. After the product is put in through the opening of the bag, the upper end is heat-sealed to seal the bag.

However, the productivity is poor in the steps of bag making and filling. Therefore, the sheet-shaped film is folded in half, the folded film is transported horizontally, the bottom and both sides are heat-sealed, and the bag is cut into individual bags, and then the product is loaded from the opening at the top of the bag. However, a bag-making filling and packaging machine has been developed which performs bag-making and filling continuously by heat-sealing the upper end of the bag.

[0006]

However, in the production of self-supporting bags, the above-described bag-making filling and packaging machine for continuously performing bag-making and filling has a high productivity but conveys the film in the horizontal direction. Therefore, there is a problem that the installation area of the device becomes large.

The same applies to the case where the bag making and the bag filling are separate steps, but since the product is introduced while the bag having an open upper end is conveyed in the horizontal direction, there is a risk that dust or the like may enter the bag. is there. Moreover, since the upper end of the bag into which the product is put is heat-sealed, it is extremely difficult to heat-seal it without mixing air into the bag. Therefore, the quality of the product cannot be maintained when it is filled with foods that easily oxidize and spoil. Further, in a product that foams, for example, a detergent or the like, bubbles flow out from the opening of the bag at the time of filling, and the outer surface of the packaging bag is contaminated or adheres to a portion to be heat-sealed, which causes a sealing failure.

To solve these problems, a vertical filling and packaging machine is effective. However, since the self-supporting bag is a bag having a thickness at the bottom, how to make the bottom becomes a problem in producing the self-supporting bag with the vertical filling and packaging machine.

Since the vertical filling and packaging machine fills the product while bag-making the sheet-like film, a predetermined portion of the film is set at a predetermined position in order to form the bottom portion in the production of the self-standing bag. It is necessary to fold it into the shape of. But,
In a general vertical filling and packaging machine, since the bag-making guide forms a sheet-shaped film into a cylindrical shape, it is difficult to form a fold in the cylindrical film.

Further, as described above, since the self-standing bag has a large bottom thickness and the degree of bulging of the bag varies depending on the site, when the film is heat-sealed, the film has "wrinkle" as compared with the case where a pillow type packaging bag is manufactured. Is likely to occur. If such "wrinkles" occur, not only the appearance of the packaging bag will deteriorate, but also good heat sealing will not be performed, and in some cases the product may leak from that portion.

Therefore, an object of the present invention is to provide a bag-making filling and packaging machine that favorably produces self-standing bags while taking advantage of the vertical filling and packaging machine that carries out bag-making filling while feeding a film downward. .

[0012]

In order to achieve the above object, the bag-making filling and packaging machine of the present invention is a bag-making filling and packaging machine for making a bag by feeding a long sheet-like film downward and filling a product. There is a vertical pipe for loading the product and a long sheet-shaped film, with the outer periphery of the loading pipe being surrounded, with the widthwise center of the film being the longitudinal direction of the film. A folding mechanism that folds inwardly along the direction to form two crests on the film, and a bottom sealing mechanism that heat seals the two crests formed on the film by the folding mechanism along the longitudinal direction of the film. A ceiling sealing mechanism for heat-sealing both end portions of the film, which passes through the folding mechanism and surrounds the outer circumference of the input pipe, along the longitudinal direction of the film, and is arranged below the input pipe. A side seal mechanism for horizontally heat-sealing the film heat-sealed by the bottom seal mechanism and the ceiling seal mechanism, and cutting the heat-sealed portion, wherein the folding mechanism is a A rectangular plate that has a flat surface parallel to the input pipe on the side, and the film is fed downward while adhering to the flat surface to bend the film at both ends to form the two peaks; Is arranged obliquely above the input pipe and the rectangular plate so as to pass downward, and the lower side has a width equal to the width of the rectangular plate and the upper side has a width larger than the width of the film. ,And,
A trapezoidal plate having two hypotenuses that spread upward at an equal angle, and arranged on both sides in the width direction of the rectangular plate to restrict the spread of both sides of the film that has passed through the trapezoidal plate.
A book guide arm.

In the present invention configured as described above, the long sheet-shaped film is fed downward while being folded into a predetermined shape by the folding mechanism, and both sides are heat-sealed by the bottom sealing mechanism and the ceiling sealing mechanism. It is made into a flat tube shape. The product is introduced into the tubular film from the introduction pipe, and the film in which the product is introduced is heat-sealed in the horizontal direction by the side sealing mechanism and cut,
Freestanding bags are manufactured. That is, in the bag-making filling and packaging machine of the present invention, continuous production is performed while the self-standing bag is laid down and fed downward.

Here, the folding mechanism is as described above.
It has a rectangular plate, a trapezoidal plate, and two guide arms. The trapezoidal plate prevents the film from being displaced in the width direction, and the rectangular plate and the guide arms form two ridges on the film. Since the film is preliminarily formed prior to the above, the displacement of the mountain portion is prevented. This stabilizes the feeding of the film, and consequently stabilizes the heat sealing positions of the bottom seal portion and the top seal portion. Further, since the film is preformed by the rectangular plate prior to forming the two crests on the film, the feed amount of the film required for forming the two crests on the film can be small.

On the other hand, the bottom sealing mechanism is disposed so as to face the receiving plate located between the two crests formed on the film by the folding mechanism and the two crests on both sides of the crest, respectively. 2 provided on the backing plate for pressurization
With the structure having two bottom seal bars, the two peaks formed on the film by the folding mechanism are heat-sealed at the same time. In this case, it is assumed that the pressing surface of the bottom seal bar against the receiving plate is provided with a concave portion surrounded by a convex portion, or the mountain portion of the film located between the bottom seal bar and the receiving plate. By configuring the bottom seal bar so that it does not pressurize the inner tip region of the film, the film is not heat sealed in the regions corresponding to these recesses and in the region of the tip of the ridges of the film. As a result, these areas serve as escape of air bubbles at the time of heat sealing, so that good heat sealing becomes possible.

Further, above the side sealing mechanism, there is provided a pair of squeeze rollers which are heat-sealed by the bottom sealing mechanism and the ceiling sealing mechanism and are rotated while crushing the film in which the product is loaded by the loading pipe over the entire width in the width direction. This prevents air from entering the self-standing bag. In this case, by providing a temporary pressing mechanism that regulates the thickness of the film above the squeeze roller, wrinkles are prevented from occurring in the film when the film is sandwiched by the squeeze roller.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a front view of an embodiment of the bag-making filling and packaging machine of the present invention, and FIG. 2 is a side view of the bag-making filling and packaging machine shown in FIG.

As shown in FIG. 15, this bag-making filling and packaging machine makes a self-standing bag 100 having a top seal portion 101, a side seal portion 102, and a bottom seal portion 103, from a charging pipe 11 extending in the vertical direction. It is for filling the liquid or pasty product to be charged. First, the overall configuration of the bag-making filling and packaging machine will be briefly described.

A sheet-shaped film 1 supplied from a film supply roller (not shown) via a guide roller 12 is provided on the upper portion of the input pipe 11, and both ends of the sheet-shaped film 1 are aligned with each other and the self-supporting bag 100 is provided. A bag-making folding mechanism 20 is provided for folding the bottom portion inward.

Below the bag-making folding mechanism 20, a bottom sealing mechanism 30 and a ceiling sealing mechanism 40 for heat-sealing the film 1 folded into a predetermined shape by the bag-making folding mechanism 20 in its longitudinal direction are arranged. It The bottom sealing mechanism 30 and the ceiling sealing mechanism 40 are arranged at positions facing each other with the charging pipe 11 in between, and the bottom sealing mechanism 30 includes the bottom sealing portion 103 (see FIG. 15) of the self-standing bag 100.
(See FIG. 3), the ceiling sealing mechanism 40 is
The ceiling seal portion 101 (see FIG. 15) of No. 00 is formed.

Below the bottom sealing mechanism 30, there is provided a reinforcing sealing mechanism 50 for reinforcing a part of the portion which is heat-sealed by the bottom sealing mechanism 30, and below the reinforcement sealing mechanism 50. Two pairs of feed rollers 13 that rotate while sandwiching and feed the film 1 downward are provided. The film 1 is disposed below the feed roller 13 so as to face the film 1 and is rotated in synchronization with the rotation of the feed roller 13.
A pair of crawler rollers 14 are provided. The squeeze roller 14 divides the product put in the film by sandwiching the film 1 over the entire width, and is provided so as to be opposed to each other in the arrow A direction shown in FIG. 2 by a drive mechanism (not shown). . Further, the percussion roller 14 rotates the film 1 in a sandwiched state to feed the film 1 downward together with the feed roller 13.

The lower end of the charging pipe 11 is located above the crawler roller 14 and below the reinforcing seal mechanism 50. As a result, the product charged by the charging pipe 11 is charged below the reinforcing seal mechanism 50, so that the product is not sandwiched by the reinforcing seal mechanism 50, and the heat sealing by the reinforcing seal mechanism 50 can be performed well. it can.

A side seal mechanism for heat-sealing the film 1 in which the product has been put in in a lateral direction (horizontal direction) to form a side seal portion 102 (see FIG. 15) of the self-standing bag 100 below the crawler roller 14. 60 are arranged.

Next, the bag making folding mechanism 20, the bottom sealing mechanism 30, the ceiling sealing mechanism 40, and the reinforcing sealing mechanism 5 described above.
The 0 and side seal mechanism 60 will be described in detail.

(1) Bag-making folding mechanism FIG. 3 is a perspective view of the bag-making folding mechanism of the bag-making filling and packaging machine shown in FIGS. 1 and 2.

As shown in FIG. 3, below the guide roller 12, a trapezoidal plate whose upper side is longer than the lower side but smaller than the width of the film 1 and whose two oblique sides have the same angle. 21 are arranged obliquely with respect to the vertical direction. A rectangular width regulating plate 23 having a width equal to the length of the lower side of the trapezoidal plate 21 is arranged in the vertical direction in the vicinity of the lower side of the trapezoidal plate 21, and on both sides of the width regulating plate 23,
Two guide arms 22 are provided that extend in the horizontal direction and at a right angle to the width direction of the width defining plate 23.

Film 1 via guide roller 12
Is fed downward by closely driving the upper surface of the trapezoidal plate 21 and the outer surface of the width regulating plate 23 by driving the feed roller 13 (see FIGS. 1 and 2), and the guide arms 22 further move the edge of the film 1. The spread of the portion is suppressed from the outside of the film 1. As a result, two ridges 1a are formed on the film 1 as shown in FIG. 4, and the region between these ridges 1a becomes the bottom surface of the self-standing bag.

Below the width regulating plate 23, one pressing plate 25 and two pressing plates 2 for folding the region between the two ridges 1a formed in the film 1 further inward.
4 are arranged. The push-in plate 25 is an inverted triangular member, and is inclined so that the region between the two ridges 1a of the film 1 shown in FIG. 4 is pushed in from the outside of the film 1. Each pressing plate 24 supports the two ridges 1a from the inside of the film 1, and the film 1 pushes the pressing plate 2
The ridges 1a are regulated so as not to be pushed in when they are pushed in, and they are arranged inside the film 1 so as to face each other with a space therebetween. As a result, the film 1 that has passed through the push-in plate 25 and each presser plate 24 is folded into a W-shape on the side opposite to the open end, as shown in FIG. And the valleys of the.

The pressing plates 24 are inclined so that the distance between them is gradually reduced in accordance with the inclination of the oblique sides of the pressing plates 25, and the film 1 that has passed through the pressing plates 25 and the pressing plates 24 is Both side portions are sandwiched by pressing rollers 26 and fed downward.

As described above, the film 1 passing over the upper surface of the trapezoidal plate 21 is bent at the two oblique sides of the trapezoidal plate 21 and the lower side between them, and is fed downward. At this time, 2
Since the two hypotenuses are equiangular with the center line of the trapezoidal plate 21,
The position of the film 1 is self-adjusted and fed so that the loads on the respective oblique sides are equal to each other, and the positional deviation of the film 1 in the width direction is prevented. Further, the bottom seal portion 103
When forming the ridge portion 1b (see FIG. 15), the trapezoidal plate 21 and the width regulating plate 23 form the ridge portion 1a which is the tip of the ridge portion 1b, so that the position of the ridge portion 1b is displaced There is no. That is, the positions of the two crests 1b and the refusal from each crest 1b to the end in the width direction of the film are the same.

As described above, the film 1 is stably fed without meandering and the formation position of the two crests 1b is also stabilized, so that the ceiling sealing mechanism 40 and the bottom sealing mechanism 3 are formed.
The heat seal position by 0 can be stabilized. In addition, since the positional displacement of the film 1 in the width direction is prevented, the film 1 does not wrinkle even when the handling operation is performed by the perforation roller 14, and as a result, the side sealing mechanism 5
The heat sealing by 0 can be performed well.

In addition, the width regulating plate 23 allows the film 1 to
After forming one ridge 1a, the middle of each ridge 1a is folded inward, so the feed amount of the film 1 required to fold the sheet-shaped film 1 into the shape shown in FIG. 5 should be shortened. Therefore, the height of the bag-making filling and packaging machine can be suppressed accordingly.

(2) Bottom Sealing Mechanism FIGS. 6A and 6B are views showing the bottom sealing mechanism shown in FIG. 1, where FIG. 6A is a top view thereof and FIG. 6B is a front view thereof. 7 is a view of the pressing surface of the bottom seal bar of the bottom sealing mechanism shown in FIG.

As shown in FIG. 6, the bottom sealing mechanism 30 is
The two cylinders 33 are attached to the frame 10a of the bag-making filling and packaging machine and fixed to the frame 10a with the rods 33a facing each other, and the support members 32 fixed to the rods 33a of the cylinders 33, respectively. Two bottom seal bars 31 supported with their pressing surfaces facing each other
And a receiving plate 34, which is supported by the frame 10a and is arranged such that the tip end portion thereof penetrates between the bottom seal bars.
The distance between each bottom seal bar 31 and the receiving plate 34 is set so that the bottom seal bar 31 is pressed against the receiving plate 34 by advancing the rod 33a of the cylinder 33.

The bag making folding mechanism 20 described above (see FIG. 3).
The film 1 folded by is sent with the receiving plate 34 intruding between the two crests 1b. Each bottom seal bar 31 has a heating means (not shown) such as an electric heater built therein. While heating each bottom seal bar 31 by these heating means, each cylinder 33 is simultaneously driven to move each bottom seal bar 31 forward, whereby the film 1
A part sandwiched between the receiving plate 34 and the bottom seal bar 31,
That is, the two peaks 1b are heat-sealed at the same time.

Here, the pressing surface of each bottom seal bar 31 is
As shown in FIG. 7, in the shaded area, there is a convex portion 31a that is higher than the surroundings, and when the pressing surface of the bottom seal bar 31 presses the film 1, the convex portion 31a is actually
Are pressed against the film 1.

Due to the shape of the convex portion 31a, the self-standing bag 1
The bottom seal portion 103 (see FIG. 15) of 00, that is, the shape of the rib for enabling it to stand as a self-standing bag is determined. In this embodiment, the bottom seal portion 103
Has a shape such that the boundary between the heat-sealed region and the product-filled region forms a concave curve, and the boundary between the region to be heat-sealed by the side sealing mechanism 60 is curved. Further, the length L of the convex portion 31a in the vertical direction is
The feed pitch P of the film 1 is larger than the feed pitch P, and at the upper and lower ends of the convex portion 31a, the bottom seal portion 103 has the self-standing bag 1.
The convex portion 31a has the maximum horizontal length so that it overlaps at both ends of the 00 side seal portion 102 (see FIG. 15).

Further, the convex portion 31a is formed with a concave portion 31b surrounded by the convex portion 31a which does not press the film when the film 1 is heat-sealed, and the convex portion 31a.
Is the tip region 1c of the folded portion of the inner surface of the film 1 forming the peak 1b formed on the film 1 (see FIG. 5).
Is provided at a position where pressure is not applied.

With the above structure, when the film 1 is heat-sealed by the bottom sealing mechanism 30, the film 1 has a region corresponding to the concave portion 31b of the bottom sealing bar 31 and a region of the tip of the mountain portion 1b (see FIG. 5). It is not heat-sealed. Therefore, these areas serve as escape of air bubbles (air pool) generated at the time of heat sealing, and no air bubbles remain in the heat sealed area, so that good heat sealing can be performed with a good appearance.

(3) Top Seal Mechanism FIG. 8 is a view showing the top seal mechanism shown in FIGS. 1 and 2, where FIG. 8 (a) is a top view thereof and FIG. 8 (b) is a front view thereof. is there. 9 is a view of the pressing surface of the ceiling seal bar of the ceiling seal mechanism shown in FIG.

As shown in FIG. 8, the ceiling sealing mechanism 40 is
Two cylinders 43 fixed to the frame 10b with their rods 43a facing each other and support members 42 fixed to the rods 43a of each cylinder 43 are supported so that their pressing surfaces face each other in a pressurizable manner. One top seal bar 41 is provided, and the open end of the film 1 folded by the bag making folding mechanism 20 (see FIG. 3) can pass between the respective top seal bars 41.

Each ceiling seal bar 41 has a heating means (not shown) such as an electric heater built therein. While heating the ceiling seal bar 41 by these heating means, the cylinders 43 are simultaneously driven to move the ceiling seal bars 41 forward, whereby the open end of the film 1 is heat-sealed along the longitudinal direction of the film 1. The film 1 has a tubular shape.

Here, the pressing surface of each ceiling seal bar 41 is
As shown in FIG. 9, in the shaded area, there is a convex portion 41a that is higher than the surrounding area, and when the pressing surface of the ceiling seal bar 41a presses the film 1, the convex portion 41a is actually formed.
a is pressed against the film 1. The shape of the ceiling seal portion 101 (see FIG. 15) of the self-standing bag 100 is determined by the shape of the convex portion 41a. In the present embodiment, the boundary between the side sealing mechanism 60 and the portion to be heat-sealed is connected by a curved line.

As in the case of the convex portion 31a of the bottom seal bar 31 of the bottom seal mechanism 30 described above, the vertical length of the convex portion 41a of the ceiling seal bar 41 is larger than the feed pitch P of the film 1. In the upper and lower ends of the convex portion 41a, the convex portion 41a has a horizontal length such that the ceiling seal portion 101 overlaps with both ends of the side seal portion 102 (see FIG. 15) of the self-standing bag 100. It is the maximum.

(4) Reinforcement Sealing Mechanism The film 1 heat-sealed by the bottom sealing mechanism 30 and the ceiling sealing mechanism 40 is horizontally heat-sealed by the side sealing mechanism 60, which will be described later, and cut into bags one by one. At this time, in the side seal portion that is heat-sealed by the side seal mechanism 60, the portion where the film 1 is folded by the folding mechanism 20 is
Film 1 has four layers. The side sealing mechanism 60 used in the present embodiment is capable of high strength heat sealing as described later, but even if excessive peeling force is applied, the heat sealed portion peels off. There is a risk that

Therefore, in this embodiment, in order to sufficiently maintain the heat-sealing strength of the portion where the film 1 has four layers, the portion where the film 1 has four layers is heat-sealed prior to the side sealing mechanism 60. A reinforcing seal mechanism 50 is provided.

10A and 10B are views showing the reinforcing seal mechanism shown in FIGS. 1 and 2, in which FIG. 10A is a top view thereof and FIG. 10B is a front view thereof. FIG. 11 is a side view showing the positional relationship among the reinforcing seal bar, the film position regulating plate, and the film shown in FIG.

As shown in FIG. 10, a reinforcing seal mechanism 50 is provided.
Is supported by the two cylinders 53 fixed to the frame 10c with the rods 53a facing each other and the support members 52 fixed to the rods 53a of each cylinder 53 with their pressing surfaces facing each other in a pressurizable manner. And two reinforcing seal bars 51. Each reinforcing seal bar 51 has
Each includes a heating means (not shown) such as an electric heater. Further, as shown in FIG. 11, these reinforcing seal bars 51 do not press the folded film 1 over the entire width direction, but the bag-making folding mechanism 20 described above folds the film 1 into four layers. It is sized to press the part. Therefore, by heating the reinforcing seal bars 51 by the heating means and simultaneously driving the cylinders 53 to move the reinforcing seal bars 51 forward,
A portion where the films 1 are quadruple (a portion where a mesh is applied in FIG. 11) is heat-sealed in a portion which becomes a side seal portion of the self-standing bag.

Further, above the reinforcing seal bar 51, two films 1 of the film 1 heat-sealed by the bottom sealing mechanism 30 are provided.
A film position regulating plate 54 is provided at a position where it enters between the two mountain portions 1b. As a result, the position of the film 1 is stabilized, the sealing position shift during the heat sealing by the reinforcing seal mechanism 50 is prevented, and the bottom seal (the film surface folded into a concave shape) generated due to the high temperature state immediately after the sealing. Can also be prevented at the same time.

(5) Side Seal Mechanism FIG. 12 is a front view of the side seal mechanism shown in FIGS. 1 and 2.

In FIG. 12, two cylinders 61, 66 are arranged with the film 1 in between, with their rods facing each other. Each of the cylinders 61 and 66 is fixed to sliders 71 and 72 (see FIG. 2) that move to face each other in the horizontal direction.

A cutter holding bar 62 holding a cutter 63 so as to be able to move forward and backward is fixed to the rod of one cylinder 61. Further, the cylinder 61 has a heater bar receiver 64, which is a member for receiving a heater bar 67 described later.
Is rotatably provided around the support shaft 61a in the arrow D direction. The heater bar receiver 64 is urged counterclockwise in the drawing by a spring (not shown), but the position of the tip of the heater bar receiver 64 is higher than a position substantially equal to the position of a heater bar 67 described later. It is regulated not to rotate. Silicone rubber is attached to the tip end surface of the cutter holding bar 62 and the tip end surface of the heater bar receiver 64.

Further, the rod of the cylinder 61 is provided with a cam 62a, and the heater bar receiver 64 is provided with a cam receiving roller 64a which comes into contact with the upper surface of the cam 62a when the rod of the cylinder 61 is advanced. There is. As a result, when the rod of the cylinder 61 advances and the cam receiving roller 64a rides on the cam 62a, the heater bar receiver 64 is rotated counterclockwise against the biasing force of the spring.

A heater bar 6 having a heating means (not shown) such as an electric heater built in the rod of the other cylinder 66.
7 is fixed. A cooling bar 68, which is a member for receiving the cutter holding bar 62, is provided in the cylinder 66.
The support shaft 66a is provided rotatably in the direction of arrow E in the drawing. The cooling bar 68 is biased clockwise in the drawing by a spring (not shown), but the position of the tip of the cooling bar 68 does not rotate beyond a height substantially equal to the position of the cutter holding bar 62. Is regulated by. Cooling bar 6
A groove is formed at the front end of 8 so that the cutter 63 can enter when the cutter 63 held by the cutter holding bar 62 is advanced.

Further, a cam 67a is provided on the rod of the cylinder 66, and the cooling bar 68 is provided on the cylinder 66.
There is provided a cam receiving roller 68a that comes into contact with the upper surface of the cam 67a when the rod is moved forward. As a result, the rod of the cylinder 66 advances and the cam receiving roller 6
When 8a rides on the cam 67a, the cooling bar 68 is configured to rotate clockwise against the biasing force of the spring.

In this embodiment, the side seal mechanism 60
Shows an electric heater provided only on the heater bar 67. However, as will be described later, since the side sealing mechanism 60 partially seals the quadruple film, In order to generate a larger amount of heat and ensure heat sealing in this part, the heater bar receiver 6
It is preferable to provide an electric heater also in No. 4.

Next, the filling and packaging operation by the bag making and packaging machine described above will be described with reference to FIGS. 1, 2 and 13.

First, in FIG. 1 and FIG. 2, the film 1 is fed from the charging pipe 11 with the closing roller 14 opened.
The film 1 is fed downward by rotating the feed roller 13 while loading the product therein. At this time, the film 1 has already been folded by the bag making folding mechanism 20, and a predetermined portion is heat-sealed by the bottom sealing mechanism 30, the ceiling sealing mechanism 40 and the reinforcing sealing mechanism 50.

When the film 1 is fed by a predetermined amount, the closing roller 14 is closed, and the closing roller 14 divides the product.

When the feed roller 13 and the digging roller 14 are further rotated in this state to feed the film 1 downward, as shown in FIG. 13A, the film 1 is formed with an empty filling portion 1d in which no product is present. It

When the empty filling section 1d is fed to the space between the side sealing mechanisms 60, that is, when the film 1 is fed by the feeding pitch P for one bag from the previous operation, the feeding of the film 1 is stopped and the slider 71, The cylinders 61 and 66 are moved closer to each other by driving 72 (see FIG. 2). At this time, the heater bar 67 is advanced and the heater bar 67 and the heater bar receiver 64 face each other. Each cylinder 6
When 1 and 66 are brought close to each other, as shown in FIG. 13B, the heater bar 67 and the heater bar receiver 64 are closed, and the empty filling portion 1d is pressurized. When the heater bar 67 and the heater bar receiver 64 are closed, the heating means incorporated in the heater bar 67 is driven to empty the empty space 1d.
Heat seal.

Here, as described above, the bottom seal mechanism 3
The part that is heat-sealed by 0 and the part that is heat-sealed by the ceiling seal mechanism 40 are connected in a horizontal direction by the bottom seal mechanism 30 and the ceiling seal mechanism 40 so that they are connected to the portion that is heat-sealed by the side seal mechanism 60 in a curved line. The seal area of is maximum in the portion that is heat-sealed by the side sealing mechanism 60. That is, in the portion to be heat-sealed by the side sealing mechanism 60, the area that has been heat-sealed in advance is large. As a result, wrinkles are less likely to occur in the film 1 when the film 1 is sandwiched between the heater bar 67 and the heater bar receiver 64 of the side sealing mechanism 60, so that a sealing failure due to the wrinkles of the film 1 is prevented.

After this heat sealing is completed, FIG.
As shown in (4), the cutter holding bar 62 is moved forward at the same time as the heater bar 67 is moved backward. As a result, the cooling bar 68 and the heater bar receiver 64 are each rotated clockwise, and the cooling bar 68 is moved to a position facing the cutter holding bar 62, while the heater bar receiver 64 is retracted downward. As a result, the empty filling section 1d is pressurized by the cooling bar 68 and the cutter holding bar 62 this time. In this state, the heat-sealed part is cooled, and the cutter 63
To advance and cut the heat-sealed part.

When the heat-sealed portion is cut, the cylinders 61 and 66 are retracted, and the obtained package is dropped. At this time, the cutter holding bar 62 is retracted, and the heater bar receiver 64 is returned to the original position. Then, the closing roller 14 is opened and the product for the next time is dropped.

The package obtained as described above can be made to stand up as shown in FIG. 15 with the bottom of the heat-sealed portion by the bottom sealing mechanism 30 (see FIG. 1) as a self-standing bag 1.
It becomes 00. Further, in this self-supporting bag 100, since the portion heat-sealed by the bottom sealing device 40 becomes the rib 101, it can be stably stood. Moreover, since this packaging machine performs bag making and filling at the same time, the self-standing bag 100 can be efficiently produced.

Further, in the present invention, since the bag making is performed with the bottom portion of the self-standing bag 100 lying down, the bag 1 can be made and filled while feeding the film 1 downward. As a result, the installation area of the bag-making filling and packaging machine is smaller than in the conventional case where the bag is opened and the bag is sealed while the bag is horizontally conveyed, and the bag-making and packaging machine is installed in the bag. It is difficult for dust to enter. Moreover,
By inserting the product with the bottom portion of the self-standing bag 100 lying down, the diameter of the introduction pipe 11 can be increased as compared with the conventional case. As a result, the amount of product input per unit time can be increased, so that the product input time is shortened, and the production efficiency of the self-supporting bag is further improved.

On the other hand, the heat sealing of both sides of the self-supporting bag 100 is performed by the side sealing mechanism 60 as described above, but the side sealing mechanism 60 of the present embodiment is in a state where the feeding of the film 1 is stopped. The heat sealing and the cooling and cutting of the heat sealed portion are performed by different means.
Therefore, since the film 1 is cooled immediately after heating,
Each process of heating, cooling, and cutting of the film 1 can be efficiently performed, speeding up the operation from heat sealing to cutting, the heat sealing strength is improved, and the sealing width is reduced. be able to.

In particular, in the portion which is heat-sealed by the side sealing mechanism 60, the film 1 has four layers in the mountain portion 1b shown in FIG. 5, and when the self-standing bag 100 is displayed as a product, both side ends are displayed. Located in. for that reason,
The side seal mechanism 60 is required to be able to reliably weld the four films, and the side seal portion 102 (see FIG. 15) is also used to efficiently display the products without any gaps.
It is preferable that the seal width is small. Therefore, it can be said that the side sealing mechanism 60 of the present embodiment, which has high sealing strength and can reduce the sealing width, is suitable as the heat sealing device used in the present invention.

The heat sealing in the side sealing mechanism 60 is
Since the empty filling portion 1d formed by the digging roller 14 is performed, air is prevented from entering the self-standing bag 100. As a result, it is possible to prevent the product from being oxidized or spoiled even in the packaging of food.

By the way, at the stage of manufacturing the self-standing bag 100 by the bag-making filling and packaging machine of the present invention, four films 1 may be stacked in the vicinity of the portion heat-sealed by the bottom sealing mechanism 30, It is thicker than other parts. Therefore, in such a state, the blue roller 1
When the film 1 is sandwiched by the film 4, wrinkles may occur in the film 1 and the heat sealing by the side sealing mechanism 60 may not be performed well.

Therefore, in order to prevent wrinkles from being generated in the film 1 when the film 1 is sandwiched by the percussion roller 14, a temporary pressing mechanism 70 as shown in FIG. 14 may be added.

The temporary pressing mechanism 70 is arranged right above the squeeze roller 14, and is arranged so as to face each other with the film 1 in between, and the support shaft 7 parallel to the axial direction of the squeeze roller 14 is provided.
It has two temporary pressing plates 71 which are rotatably supported around 1a in the direction of the arrow shown in the figure, and a cylinder 72 for moving the temporary pressing plates 71 opposite to each other in the direction of the arrow shown. The temporary pressing plate 71 is for controlling the thickness of the film 1 loaded with the product by pressing the film 1 from the outside. Before the closing roller 14 is closed, the temporary pressing plate 71 is closed to such an extent that the film 1 is not completely crushed. To be As a result, the thickness of the film 1 into which the product is put is thin, and the film 1 becomes substantially uniform in the width direction (horizontal direction).
Even if the film 1 is sandwiched by, the film 1 is less likely to be wrinkled. Then, while the thickness of the film 1 is regulated by the temporary pressing plate 71, the squeeze roller 14 is rotated to form the empty filling portion 1d (see FIG. 13) in the film 1,
Wrinkles are prevented from being generated during the feeding of the film 1.

[0074]

As described above, in the bag-making filling and packaging machine of the present invention, while the film is being fed downward, the folding mechanism and the three sealing mechanisms make the self-standing bag lie sideways to fill the bag and the product. Therefore, it becomes difficult for dust to enter the self-standing bag and the installation space of the packaging machine can be reduced. In particular, since the folding mechanism has the trapezoidal plate, the rectangular plate, and the two guide arms, the film feeding is stable and the folding position is also stable. Therefore, the heat sealing by the bottom sealing mechanism and the ceiling sealing mechanism performed thereafter is performed. Also, the film can be satisfactorily processed without causing wrinkles or the like.

Further, when the bottom sealing mechanism has two bottom sealing bars and a receiving plate disposed between them, and the mountain portion of the film is heat-sealed between the bottom sealing bar and the receiving plate, Do not provide a concave part surrounded by convex parts on the pressing surface of the bottom seal bar with the receiving plate, or press the area of the tip of the mountain portion of the film located between the bottom seal bar and the receiving plate. By configuring the bottom seal bar in the above, the region corresponding to these recesses and the region at the tip of the mountain portion escape bubbles generated during heat sealing, and therefore good heat sealing is possible.

Further, above the side sealing mechanism, there is provided a pair of squeeze rollers which are heat-sealed by the bottom sealing mechanism and the ceiling sealing mechanism and are rotated while crushing the film in which the product is loaded by the loading pipe over the entire width in the width direction. Thus, it is possible to prevent air from entering the self-standing bag. In this case, by providing a temporary pressing mechanism that regulates the thickness of the film above the squeeze roller, it is possible to prevent wrinkles from occurring in the film when the film is sandwiched by the squeeze roller, and to prevent heat sealing by the side sealing mechanism. It can be done well.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a bag-making filling and packaging machine of the present invention.

FIG. 2 is a side view of the bag-making filling and packaging machine shown in FIG.

FIG. 3 is a perspective view of a bag-making folding mechanism of the bag-making filling and packaging machine shown in FIGS. 1 and 2.

FIG. 4 is a cross-sectional view of the film that has passed through the width defining plate of the bag making folding mechanism.

FIG. 5 is a cross-sectional view of the film that has passed through the bag-making folding mechanism.

FIG. 6 is a view showing the bottom sealing mechanism shown in FIG.
(A) is a top view and (b) is a front view.

FIG. 7 is a view of the pressing surface of the bottom seal bar shown in FIG.

8A and 8B are diagrams showing the ceiling sealing mechanism shown in FIGS. 1 and 2, wherein FIG. 8A is a top view and FIG. 8B is a front view.

9 is a view of a pressing surface of the ceiling seal bar shown in FIG.

10A and 10B are views showing the reinforcing seal mechanism shown in FIGS. 1 and 2, in which FIG. 10A is a top view and FIG. 10B is a front view.

11 is a side view showing the positional relationship between the reinforcing seal bar and the film position regulating plate shown in FIG.

12 is a front view of the side seal mechanism shown in FIGS. 1 and 2. FIG.

FIG. 13 is a diagram illustrating a filling and packaging operation by a side sealing mechanism.

FIG. 14 is a side view of a temporary pressing mechanism applicable to the bag-making filling and packaging machine of the present invention.

FIG. 15 is a perspective view of a self-standing bag manufactured by the bag-making filling and packaging machine shown in FIGS. 1 and 2.

[Explanation of symbols]

1 film 1a Ridge 1b Yamabe 1c Tanibe 10a, 10b, 10c frames 11 Input pipe 12 Guide roller 13 Feed roller 14 Shigoki Roller 20 Bag-making folding mechanism 21 trapezoidal plate 22 Guide arm 23 width regulation plate 24 Presser plate 25 push plate 26 Presser roller 30 Bottom seal mechanism 31 Bottom seal bar 31a, 41a convex parts 31b recess 32, 42, 52 support members 33, 43, 53, 61, 66, 72 cylinders 34 Support plate 40 sky seal mechanism 41 Heaven Seal Bar 50 Reinforcement seal mechanism 51 Reinforcement seal bar 54 Film position control plate 60 side seal mechanism 62 cutter holding bar 62a and 67a cams 63 cutter 64 heater bar receiver 64a, 68a Cam receiving roller 67 heater bar 68 Cooling bar 70 Temporary presser mechanism 71 Temporary holding plate 100 freestanding bags 101 Top seal part 102 side seal part 103 Bottom seal part

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 28, 1999 (1999.4.2)
8)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 2

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 7

[Correction method] Change

[Correction content]

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0027

[Correction method] Change

[Correction content]

As shown in FIG. 3, the guide below the roller 12, the length of the upper side rather long than the length and width of the film 1 of the lower side, and are equal to each other angles of the two inclined side trapezoidal plate 21 , Are arranged diagonally with respect to the vertical direction. A rectangular width regulating plate 23 having a width equal to the length of the lower side of the trapezoidal plate 21 is arranged in the vertical direction in the vicinity of the lower side of the trapezoidal plate 21. ,
Moreover, it extends in a direction perpendicular to the width direction of the width regulating plate 23.
A book guide arm 22 is provided.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction content]

As described above, the film 1 passing over the upper surface of the trapezoidal plate 21 is bent at the two oblique sides of the trapezoidal plate 21 and the lower side between them, and is fed downward. At this time, 2
Since the two hypotenuses are equiangular with the center line of the trapezoidal plate 21,
The position of the film 1 is self-adjusted and fed so that the loads on the respective oblique sides are equal to each other, and the positional deviation of the film 1 in the width direction is prevented. Further, the bottom seal portion 103
When forming the ridge portion 1b (see FIG. 15), the trapezoidal plate 21 and the width regulating plate 23 form the ridge portion 1a which is the tip of the ridge portion 1b, so that the position of the ridge portion 1b is displaced. There is no. That is, the positions of the two crests 1b and the distance from each crest 1b to the widthwise end of the film are the same.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0059

[Correction method] Change

[Correction content]

First, in FIG. 1 and FIG. 2, the film 1 is fed from the charging pipe 11 with the closing roller 14 opened.
The film 1 is fed downward by rotating the feed roller 13 while loading the product therein. In this case, the film 1 has already, in conjunction with folding is formed by the bag making folding mechanism 20, bottom sealing mechanism 30, a predetermined portion is heat seal the top sealing mechanism 40 and the reinforcement sealing mechanism 50.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0066

[Correction method] Change

[Correction content]

The package obtained as described above can be made to stand up as shown in FIG. 15 with the bottom of the heat-sealed portion by the bottom sealing mechanism 30 (see FIG. 1) as a self-standing bag 1.
It becomes 00. Further, in this self-supporting bag 100, since the portion that is heat-sealed by the bottom sealing device 40 becomes a rib , it can be stood upright. Moreover, since this packaging machine performs bag making and filling at the same time, the self-standing bag 100 can be efficiently produced.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3E050 AB02 BA01 BA02 CA01 CA08                       DB01 DD03 DF01 DH04 DH06                       FB01 FB07 GA01 GA02 GB06                 3E075 AA02 BA47 CA02 DA14 DA32                       DB03 DB14 DC03 DC29 DC43                       DC44 DD14 DD42 DD45 DD47                       GA03 GA04

Claims (7)

[Claims] 1. A bag-making filling and packaging machine for making a bag by feeding a long sheet-like film downward and filling the product with a loading pipe arranged vertically for loading the product, A folding mechanism for folding a long sheet-shaped film inwardly along the longitudinal direction of the film so as to form two crests in the film in a state where the outer circumference of the input pipe is surrounded. A bottom sealing mechanism for heat-sealing the two ridges formed on the film by the folding mechanism along the longitudinal direction of the film, and both side edges of the film that passes through the folding mechanism and surrounds the outer circumference of the input pipe. A top sealing mechanism for heat-sealing a portion along the longitudinal direction of the film, and a heat-sealing mechanism disposed below the input pipe and having the bottom sealing mechanism and the ceiling sealing mechanism. The film is heat-sealed in a horizontal direction and has a side sealing mechanism that cuts the heat-sealed portion, and the folding mechanism has a flat surface parallel to the charging pipe on a side of the charging pipe. A rectangular plate in which the film is bent downward at both ends by being closely attached to the flat surface to form the two crests; and the input pipe and the rectangular plate so that the film passes downward on the upper surface. Is obliquely arranged above, the lower side has a width equal to the width of the rectangular plate, the upper side has a width larger than the width of the film, and has two oblique sides that spread upward at equal angles. A bag-making filling and packaging machine having a trapezoidal plate and two guide arms which are arranged on both sides in the width direction of the rectangular plate and which restrict the spread of both sides of the film passing through the trapezoidal plate. 2. The folding mechanism is disposed below the rectangular plate, and pushes in a widthwise center of a region of the film passing through the rectangular plate from the outside to the inside of the film, and both sides of the pushing plate. 3. The bag-making filling and packaging machine according to claim 2, further comprising: two holding plates that are disposed in the film, and regulate the positions of both ends in the width direction of the region of the film that has passed through the rectangular plate from the inside of the film. 3. The bottom sealing mechanism includes a receiving plate located between the two crests formed on the film by the folding mechanism, and facing both sides of the receiving plate with the two crests in between. The bag-making filling and packaging machine according to claim 1 or 2, further comprising: two bottom seal bars that are arranged and are respectively pressurizable provided on the receiving plate. 4. The bag-making filling and packaging machine according to claim 3, wherein a concave portion surrounded by a convex portion is provided on a pressing surface of the bottom seal bar against the receiving plate. 5. The bottom seal bar is configured so as not to press the tip region inside the folded portion forming the mountain portion of the film located between the bottom seal bar and the receiving plate. The bag-making filling and packaging machine according to claim 3 or 4. 6. A pair that is heat-sealed above the side sealing mechanism by the bottom sealing mechanism and the ceiling sealing mechanism, and is rotated while crushing the film in which the product is loaded by the loading pipe over the entire width in the width direction. 6. The bag-making filling and packaging machine according to any one of claims 1 to 5, further comprising: 7. The provisional pressing mechanism, which is heat-sealed by the bottom sealing mechanism and the ceiling sealing mechanism and regulates the thickness of the film in which the product is loaded by the loading pipe, is provided above the squeeze roller. The bag-making filling and packaging machine according to any one of items.