JPH0699917A - Method and apparatus for commodity filling-packaging - Google Patents

Abstract

PURPOSE:To allow performing air-exhaust during the automated commodity filling-packaging process of an automatic bag-making-filling type commodity filling former with a former for forcibly, certainly removing air and debris inside a bag raw material, which is produced during commodity fall-introducing- filling process. CONSTITUTION:An exhaust nozzle 20 is inserted from a guide chute 8 into a cylinder 9 beneath the chute 8 and an exhaust arm 22 at the upper end of the exhaust nozzle 20 is connected to an exhaust device 23 by a flexible hose 22' and to a lift 25. Seal chokes 16 which are made of flexible sponge and are moveable back and forth are installed above lateral sealers 15, 15'. After a commodity is put in a bag raw material 1 and the exhaust nozzle 20 faces the inside of the bag raw material 1, the seal chokes 16 seal the bag raw material 1 and forcibly expel air and debris of commodity in the bag raw material 1.

Description

Detailed Description of the Invention

[0001]

[Industrial application] The disclosed technology is to make a bag with a sheet of polyethylene or the like, fill a predetermined amount of products such as potato chips in the middle of the bag, and then exhaust the air from the inside of the bag to seal the opening. Belongs to the technical field of bag making and filling.

[0002]

2. Description of the Related Art As is well known, the improvement of civic life is supported by stable transactions of large and small quantities of various products in the secondary market.

[0003] Therefore, in various products such as food products, quality assurance and reliable distribution of stable quantities are supported, and therefore, there are problems in credit to consumers, stable quality assurance, From the viewpoint of ease of handling and uniform distribution guarantee such as uniform handling nationwide, for example, set weight of a certain product in a bag material made of polyethylene sheet, or weight close to the weight, etc. It is well established that the item is filled in the amount of and the transaction is carried out in the secondary market in a sealed state in which the opening is sealed.

By the way, although there are various advantages in dealing in the form of a bag filled with a predetermined product and sealed,
For example, in the case where products such as fresh foods are filled, the handling period is not constant over time from the time of bag filling to the time of purchase by the consumer, and oxidation due to temperature changes in the surrounding environment, etc. In order to deal with this phenomenon, airless type bag-filled products such as so-called Ageless (trademark) have recently come into wide use.
As shown in FIG. 12, a bag material 1 made of polyethylene or the like is filled with a predetermined product 2 such as potato chips,
In the product filling and packaging process in which the opening 3 is heat-sealed, a technique for exhausting the internal air to perform vacuum packaging has been strongly demanded on the supply side. To cope with this, for example,
As shown in Japanese Utility Model Publication No. 50-10274, there is also a mode in which air inside the bag material is exhausted by pressing air vent plates on both sides of the bag material so as to face each other. In some cases, it is difficult to evacuate the product depending on the filling state of the product, and it is extremely troublesome to adjust the exhaust level. To address this, for example, Japanese Patent Publication No. 9209/1989 Has been developed, as shown in FIG. 13, a technique for forcibly exhausting the air inside the bag material 1 by pressing elastic frames 4 and 4 from both sides of the bag material 1 filled with the product 2 so as to face each other. Being developed.

[0005]

However, in such a technique, the pressing frame 4 needs to have a size larger than the surface size of the bag material 1, which improves the efficiency in the mass production system.
In order to perform high-speed operation in order to reduce costs, the pressing frame 4
There is an inconvenience that it is not possible to reliably move back and forth,
In the state where the filled products 2 are three-dimensionally overlapped with each other, there is a drawback that the air of the polymerization portion cannot be exhausted.

[0006] Thus, as shown in FIG.
In the invention disclosed in Japanese Patent No. 9705, a method is used in which an exhaust nozzle is inserted into a bag material filled with a product to suck and exhaust air in the bag material, and the air in a superposed portion of the product can be forcibly exhausted. Is.

However, as shown in FIG. 14, in this technique, holding bars 5 and 5 are inserted into both ends of the opening 3 of the bag material 1 filled with the product 2 and pulled to both sides to open the opening 3. When the state is set, the exhaust nozzle 6 is attached to the opening 3
The bag material 1 is inserted into the bag material 1 so as to face it, and in that state, the air inside the bag material 1 is forcibly exhausted through the exhaust nozzle 6 by a vacuum pump or the like.

However, as is well known to those skilled in the art, a packaging system has been generalized, in which a bag-making and filling apparatus having a former is used to automatically and continuously perform bag-making and filling. Products are filled while the bag material is fed downward from the lower end of the connected cylinder,
In a mode in which the opening is sealed by the horizontal sealer,
The opening / closing process of the opening 3 by the support rods 5 and 5, the posture maintenance, and the insertion / removal process by raising / lowering the exhaust nozzle 6 into the bag material 1 are remarkably interfering with the structure in view of the bag making and filling device. There is a problem that it is not put to practical use.

Particularly, it is extremely difficult to fit the exhaust nozzle that moves up and down with the former or the cylinder, and there has been a negative point that the actual usable appearance has not been designed so far.

[0010]

OBJECT OF THE INVENTION The object of the invention of this application is to solve the problem of forcibly exhausting air from the inside of a bag material filled with products based on the above-mentioned prior art, and to fill the inside of the bag material with the technical problem. The air can be exhausted from the polymerized part of the stored products, and the vacuum packaging system as designed can be achieved reliably, and the automatic bag-making and filling packaging that has been established in the market can be performed, and the automatic bag-making and filling packaging can be performed with high efficiency. An object of the present invention is to provide an excellent product filling and packaging method that can be carried out so as to benefit the field of utilizing automatic bag making and packaging technology in the distribution industry, and an apparatus directly used for the method.

[0011]

In order to solve the above-mentioned problems, in order to solve the above-mentioned problems, the structure of the invention of this application, which is based on the above-mentioned object, has a polyethylene sheet from its bobbin to a guide roll. And is formed into a tubular shape along the outer side of a cylinder connected to the lower side of the former through a feeder, etc., and is intermittently pulled down as a bag material by a pulling down device provided on the outer side of the cylinder. Then, it is laterally sealed by a horizontal sealer provided on the lower side of the cylinder, and then, through a guide chute provided on the upper side of the former, the product is weighed in a predetermined amount in the preceding stage and the like. The tip of the exhaust nozzle that is filled in the bag material and moves up and down via the vertical slit provided on the side surface of the guide chute prior to the horizontal sealing of the upper opening is the lower end of the cylinder. The air inside the bag material and the air in the product superposition part by the exhaust arm that is inserted into the bag material and is sealed between the outside of the exhaust nozzle and the bag material by the flexible seal choke and connected to the exhaust device. Also, the flexible seal choke is attached to the horizontal sealer to allow the exhaust nozzle to move up and down, preventing outside air from entering the bag material, and the bag material is made by the former as in the conventional mode. , And, after the product is filled and after exhausting, a horizontal seal is formed through a horizontal sealer and a horizontal cut is made to form a vacuum package, and the elevating device for the exhaust nozzle is for opening and closing the valve for the exhaust nozzle, and , Seal chalk, and
A lateral sealer and a switch for electrically controlling the pulling-down device are provided so that exhaust, product filling, and bag making can be automatically performed according to a program.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the invention of this application will be described below with reference to FIGS.

It should be noted that parts that are the same as those in FIG. 12 and subsequent figures will be described using the same symbols.

The illustrated mode is a mode of vacuum packaging and filling of potato chips as a commodity in a backyard of a supermarket, and 7 of FIG. 1 is a commodity filling and packaging apparatus which forms the center of one gist of the invention of this application. The essential part of the basic structure is the same as the conventional general mode of product filling and packaging, and a guide chute 8 having a taper cone shape with one side open upward is connected to an upper stage weight measuring device (not shown). A cylinder 9 having a circular cross section of a predetermined length is smoothly connected to the lower end of the cylinder 9 and extends downward. A former 10 is provided at the upper end of the cylinder 9, and both ends of the film sheet of the bag material 1 are provided below the cylinder 10. Is provided with a vertical sealer 11 for
Immediately below the both sides, endless belt type pulling-down devices 13, 13 having a motor 12 of a driving device are provided side by side, and a cutter 14 is provided below the lower end of the cylinder 9.
The horizontal sealers 15 and 15 'having the above are arranged so as to be able to approach and separate from each other, and the flexibility made of synthetic resin is provided between the upper portions of the horizontal sealers 15 and 15' and the lower end of the cylinder 9. The sponge-like seal chokes 16, 16 are formed in a rectangular cross section, and can also be moved toward and away from the horizontal sealer 1.
The vertical sealer 11 and the pulling-down device 13 are arranged in parallel with each other in parallel with 5, 15 'and at an angle of 90 °.

As shown in FIG. 11, the seal chokes 16 and 16 are formed with notches 16 'having a semicircular cross section similar to the outer diameter of the following exhaust nozzle 20 on the inner surfaces facing each other so that the bag material 1 is sandwiched between them. Then, the outside of the exhaust nozzle 20 is hermetically sealed, and each backing plate is provided with a fluid cylinder 33 for advancing and retreating and is moved forward and backward by the controller 32.

Reference numeral 17 denotes a bobbin of a polyethylene film-like sheet, which feeds the sheet 19 through a guide roll 18, a dancer roller 18 'and the like and feeds it to the former 10 and the cylinder 10 from the former 10. The cylindrical bag material 19 'is formed on the outer side of the container and is pulled down intermittently by the pulling-down device 13.

Reference numeral 20 denotes an exhaust nozzle which constitutes an important mechanism of the invention of the present application, and extends downward along the central portion of the guide chute 8 and the cylinder 9, and its tip, that is, the lower end opening 20 'is formed. The cylinder 9 is exposed to the inside of the rectangular bag material 1 from the lower end so that the air inside can be exhausted, and the upper end is bent 90 ° laterally to form a slit provided in the guide chute 8. As shown in FIG. 21 to FIG. 2, it extends and is connected to the exhaust arm 22, is vertically movable for a predetermined stroke, is equipped with an opening / closing valve 36, and is connected to a predetermined vacuum device 23 via a flexible hose 22 ′.

Further, as shown in FIG. 9, the upper end of the exhaust nozzle 20 slides on a guide rod 21 'vertically attached to the outside of the guide chute 8 by a bracket so as to be vertically movable. It is linked via 24 to a lifting device 25 described below.

As shown in FIG. 10, in the lifting device 25, a rack 26 provided on the outer end of the slider 24 is engaged with a gear 27 having a large diameter, and a pinion 28 provided integrally with the gear 27. Is a rack 30 that moves back and forth by a cylinder 29
Is engaged with the slider 24, that is, the exhaust nozzle 20 to move up and down by a predetermined stroke.

The gear 27 is provided with a dog 31 so that a limit switch 31 'provided on a frame (not shown) of the lifting device 25 can be used to transmit a control signal to a predetermined control device 32. Has been done.

The control device 32 includes a fluid cylinder 33 for advancing and retracting the seal choke 16 and a lateral sealer 1.
5, 15 'drive device 34 and pull-down device 13
The motor 12 of the driving device, the opening / closing valve 36 of the flexible hose 22 ', and the solenoid 35 of the opening / closing damper 37 provided on the upper part of the guide chute 8 are electrically connected to each mechanism according to a program input in advance. The department is set to operate.

Incidentally, the exhaust arm 22 and the guide rod 21 '.
And are laterally arranged so that they do not interfere with each other.

Reference numeral 38 is a switching valve for the cylinder 29 of the elevating device 25, which is operated by the control device 32 in a predetermined manner so that the cylinder 29 can be moved back and forth.

In the above-mentioned structure, when the pulling-down device 13 is intermittently operated by the motor 12 of the drive device by the control device 32, the sheet 19 fed from the bobbin 17 is sent to the former 10 through the guide roller 18, the dancer roller 18 'and the like. It is supplied and molded into a cylindrical shape outside the cylinder 9.

Both end portions of the sheet 19 facing each other outside the cylinder 9 are sealed by the vertical sealer 11 and extended from the lower end portion of the cylinder 9 as a bag material 19 'and controlled at a predetermined timing. The cylinder 29 of the lifting device 25 is operated via the device 32, and the slider 24 slides down to the guide rod 21 'through the pinion 28, the gear 27, and the racks 30 and 26, and the exhaust nozzle 20 is opened to open the lower end thereof. As shown in FIG. 3, the cylinder 20 'extends downwardly from the lower end 9'of the cylinder 9 so as to be inserted into the bag material 1.

Thereafter, as shown in FIG. 10, the opening / closing damper 37 causes the solenoid 3 to move by the control device 32 at a predetermined timing.
A guide chute 8 is opened and closed by 5 and the potato chips 2 as a product are weighed by a predetermined weight in the preceding stage.
It passes through the cylinder 9 and is charged and filled in the upper part of the seal choke in the bag material 1.

At this time, as shown in FIG. 10, the seal chokes 16 and 16 are advanced through the control device 32 through the cylinder 33 of the seal chokes 16 and 16 so that the seal chokes 16 and 16 are brought close to each other from the outside of the bag material 1. Indirectly in close contact,
Inside the bag material 1, the notches 16 ′ and 16 ′ having semicircular cross-sections facing each other are closely attached to the outside of the exhaust nozzle 20 through the bag material 1 so that the upper and lower sides of the outside of the exhaust nozzle 20 are sealed.
Also, the inside of the cylinder 9 is shut off.

Then, as shown in FIG. 5, when the seal chokes 16 and 16 seal the outside of the exhaust nozzle 20 through the bag material 1, the flexible hose 22 for the vacuum device 23 which is constantly operated by the control device 32. '
The opening / closing valve 36 of the vacuum device 23 is opened, and the vacuum exhaust operation by the vacuum device 23 reaches the exhaust nozzle 20 and its tip 20 '.
Not only is the air in the bag material 1 forced out, but
Air in the gap between the superposed portions of the potato chips 2 filled in the bag material 1 is also forcibly discharged, and therefore the bag material 1
The inside is evacuated.

Further, at a predetermined timing, as shown in FIG.
By the retracting action of the cylinder 29 via the control device 32, the slider 24, that is, the exhaust nozzle 20 starts to rise due to the action of the rack 30, the pinion 31, the gear 31 ', and the rack 26, and the seal choke 16 of the lower end opening 20' thereof. , 1
6, the seal choke 16 has a flexible sponge shape, and therefore, as shown in FIG. 6, the seal choke 16 is elastically pressed against the rise of the lower end opening 20 ′ of the exhaust nozzle 20. The lower end opening 20 of the exhaust nozzle 20 of the bag material 1
'Is a copy-seal action against the upper cylinder 9
The invasion of air from the inside is prevented, and the vacuum state in the bag material 1 is sufficiently maintained.

After that, when the exhaust nozzle 20 is subsequently pulled upward from the horizontal sealers 15, 15 'by the action of the elevating device 25, the seal chokes 16, 16 are moved relative to each other via the bag material 1. To the contrary, the indirect contact state is established, the inside of the bag material 1 and the cylinder 9 are completely cut off, and the inside of the bag material 1 is kept in a vacuum state, where the horizontal sealers 15 and 15 'are controlled. 32, the upper part is heat-sealed in close proximity, and then the cutter 14 is operated via the control device 32 to perform horizontal cutting, and as shown in FIG. 12, the vacuum-packed product-filled bag falls. Transferred to the transport conveyor to the next stage.

When the horizontal sealers 15 and 15 'are sealed, the opening / closing valve 36 of the vacuum device 23 is closed to shut off the exhaust action, and the atmospheric pressure is established.

Then, returning to the state shown in FIG. 8, one cycle is completed, the above cycle is repeated again, and the continuous automatic packaging of the vacuum-packed product-filled bags is repeated.

The lower end opening 20 'of the exhaust nozzle 20
By disposing a filter having a plurality of meshes in the bag material, in the process of charging and filling the potato chips 2 into the bag material, the fine powder crushed by the impact is also sucked and discharged, and fine particles and fine powder are discharged into the bag material. It is also possible to prevent the value of the shipped product from deteriorating without allowing it to remain.

Of course, the embodiment of the invention of this application is not limited to the above-mentioned embodiment, and various embodiments such as providing an opening / closing chuck on the bag material can be adopted.

Further, as a matter of course, as a design change, the elevating device for the exhaust nozzle may be replaced with a rack gear system and a solenoid system.

It goes without saying that the target products can be products other than potato chips.

[0037]

As described above, according to the invention of this application, a sheet of polyethylene film or the like is basically used to form a tubular bag material by a former, and a lower side of the former is formed via a guide chute on the former. When a predetermined product such as potato chips is charged and filled into the bag material through the cylinder and vacuum packaging is performed, the product is filled and the bag is made, and further, the air in the bag material and further the product in the bag making process. It also sucks and removes the broken powder and fine particles of the product caused by the impact of the drop in the filling and filling process, prevents the deterioration and deterioration of the filled product over time, eliminates the presence of broken powder, maintains the product accuracy, and The excellent effect that the reliability can be improved is exhibited.

Further, after the product is filled and packed, the bag material is opened by using the jig to eliminate the troublesome steps such as inserting and removing the exhaust nozzle, and the apparatus can be simplified and maintained accordingly. Not only inspection and maintenance, but also management and control are easy to perform, and the air existing in the gap between the overlapping parts of filled products cannot be exhausted by advancing and retracting the pressing frame from both sides of the bag material. By adopting an exhaust system,
This has an excellent effect that a small amount of air in the gap between the product-polymerized portions can be surely discharged.

Since the conventional packaging system is used as it is, only a slight modification is required for the former or the like and an exhaust nozzle is provided, so that no major design change is required and, as a result, the initial cost is reduced. There is also an effect that reduction can be achieved.

Since the exhaust nozzle can be moved up and down in the cylinder of the former and can be provided over the slit of the guide chute or the like on the upper part of the former, it does not interfere with the film sheet supplied to the former. The bag making is guaranteed as in the conventional manner, and the merit of the conventional manner in which the product filling and the bag making can be performed in the same process is fully utilized.

The exhaust nozzle is connected to the outer end of the exhaust arm that extends over the inside and outside of the guide chute, and the exhaust arm is connected to the lifting device and the exhaust device. The exhaust function of the exhaust arm is guaranteed, and it can be raised and lowered freely, and the flexible seal choke that is attached to the horizontal sealer also maintains the sealing performance with the bag material outside the exhaust nozzle. .

The exhaust nozzle that moves up and down in the cylinder by the flexible seal choke guarantees a seal even in the seal choke portion, and air from the cylinder or the like does not enter the bag material that has been evacuated. It has the effect of

By providing a filter at the opening of the tip of the exhaust nozzle, not only the air in the bag material is forcibly exhausted, but also an appropriate dust removing device is provided at a predetermined portion of the exhaust nozzle so that the bag material can be kept in the bag material. It is possible to remove broken powder and the like of the product that is dropped and to improve the product accuracy and obtain the reliability of the product.

[Brief description of drawings]

FIG. 1 is an overall schematic perspective view of an apparatus of the invention of this application.

FIG. 2 is a perspective view showing a combination of a guide chute and an exhaust nozzle.

FIG. 3 is a schematic side view of the descent process of the bag material and the exhaust nozzle.

FIG. 4 is a schematic side view of a process of dropping a product into a bag material and sealing the bag material with a seal chalk.

FIG. 5 is a schematic side view of the bag material being pressed by a seal chalk and the exhaust nozzle.

FIG. 6 is a side view of a process of raising an exhaust nozzle.

FIG. 7 is a side view of a lateral seal of the bag material after evacuation.

FIG. 8 is a schematic side view of the product bag cut and dropped.

FIG. 9 is a vertical cross-sectional view of a guide chute and a cylinder, and a seal choke and a horizontal sealer.

FIG. 10 is a schematic view of a mechanism of the lifting device.

FIG. 11 is a schematic perspective view of a seal choke.

FIG. 12 is a schematic vertical sectional view of a vacuum packaging bag.

FIG. 13 is a schematic vertical cross-sectional view of the exhaust of the bag material based on the conventional technology.

FIG. 14 is a schematic front view of exhausting air in a bag material based on a conventional technique.

[Explanation of symbols]

 2 product 1 bag material 20 exhaust nozzle 10 former 9 cylinder 7 product filling and packaging device 8 guide chute 22 exhaust arm 25 lifting device 23 exhaust device 36 valve 36 ', 35 switch 15,15' horizontal sealer 16 seal choke

Claims (7)

[Claims] 1. A bag material which is filled with a product and whose upper portion is in an open state, has an exhaust nozzle inserted through the opening to suck and exhaust air from the bag material, and then the exhaust nozzle is pulled upward. In the product filling and packaging method of sealing the opening of the bag material, the bag material is molded through the former and the product is filled, and at the same time, the exhaust nozzle is moved up and down in the cylinder of the former to move the bag material inside the bag material. A product filling and packaging method, characterized in that exhaust is performed. 2. The method according to claim 1, wherein before the opening of the bag material is sealed, the exhaust nozzle is sealed on the outside of the bag material so as to move up and down from the opening. Item filling and packaging method described in item. 3. An opening of a bag material is performed by inserting an exhaust nozzle from the top into a bag material filled with a product and opened from the top to suck and exhaust air from the bag material, and then pulling the exhaust nozzle upward. In an apparatus used for a product filling and packaging method for sealing a product, a vertically movable exhaust nozzle is inserted in a cylinder of a farmer, and an exhaust arm of an exhaust arm extended across the inside and outside of a guide chute at the top of the former is installed. A product filling and packaging apparatus, which is connected to an inner end, an outer side of the exhaust arm is connected to an elevating device, and the elevating device is linked to the exhaust device. 4. A product filling and packaging apparatus according to claim 3, wherein the lifting device is provided with a switch for opening and closing a valve of an exhaust arm. 5. The product filling and packaging apparatus according to claim 3, wherein the lifting device is provided with a switch for driving packaging. 6. The product filling and packaging apparatus according to claim 3, wherein a flexible seal choke is provided side by side with the horizontal sealer below the cylinder. 7. The product filling and packaging apparatus according to claim 3, wherein a filter is attached to the exhaust nozzle.