JP3475409B2 - Powder packing and filling equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for packing and packing powders and granules, and more specifically, a packing for packing and packing a predetermined amount of powders and granules in an inner bag, and further packing this in an outer bag. The present invention relates to a filling device.

[0002]

2. Description of the Related Art As an automatic packing and filling apparatus for powder and granules, a method is generally used in which a fixed amount of powder or granules is weighed and filled in a plastic film packaging bag, and then the filling port is heat-sealed. Has been done. However, when using such a conventional method, depending on the combination of the type of powder and granules and the type of packaging bag, the powder or granules are likely to adhere to the heat-sealing portion of the packaging bag during the filling operation. Depending on the type, the adhered powder cannot be easily removed. For example, antimony trioxide is a fine powder and has the property of electrostatically adhering to the heat-sealed portion of a plastic film packaging bag, and cannot be easily removed. Since it is extremely difficult to remove the electrostatically adhered powder, it is necessary to heat seal the powder as it is adhered.

When heat-sealing in such a state,
Although the heat-sealing part is tentatively adhered, its adhesive strength is very weak, and the heat-sealing part opens during transportation of the packaging bag and other handling, and the powder and granules filled in the packaging bag spill out from the opening. Trouble often occurs. When such a trouble occurs, the post-treatment is not only troublesome, but when the powder or granular material is harmful, there is a problem from the viewpoint of environmental hygiene.

[0004]

In view of the above-mentioned circumstances, the present invention provides a powder or granular material which easily adheres to the heat-sealed portion of a plastic film packaging bag when the powder or granular material is filled in the packaging bag. It is an object of the present invention to provide an automatic packaging and filling device capable of reliably performing heat sealing.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the inventors of the present invention doubly package the powder and granules in an inner bag and an outer bag, and separately seal the openings of both bags. if,
Focusing on the fact that at least the seal part of the outer bag can be surely adhered, a concrete study was conducted on a device for continuously and automatically processing this, and it was found that the outer bag packaging zone was located below the inner bag packaging zone. It has been found that an apparatus having a structure in which the inner bag, which is provided with and filled with the powder and granules, is dropped into the outer bag is suitable.

Therefore, in order to solve the above-mentioned problems, in the present invention, a mechanism for pulling and holding the inner bag in a state in which the opening of the inner bag is opened in the lower part of the powder and granule filling nozzle, the powder and granular material filling After that, an inner bag wrapping zone A having a mechanism for heat-sealing the opening, a mechanism for dropping the inner bag after heat-sealing under the inner bag wrapping zone, and a mechanism for holding the opening of the outer bag in an open state An outer bag packaging zone B having a mechanism for sealing the opening of the outer bag after receiving the dropped inner bag in the outer bag, and a mechanism for transferring the sealed outer bag to the outside of the apparatus.
The device is provided with and.

Hereinafter, the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the following description examples as long as the gist thereof is not exceeded. FIG. 1 is a perspective view of an example of an automatic packaging and filling apparatus according to the present invention. FIG. 2 is a schematic front view of the automatic packaging and filling device shown in FIG.

In the figure, A is an inner bag packaging zone and B is an outer bag packaging zone. 1 is an inner bag wrapping zone support frame, 2 is an outer bag wrapping zone support frame, 3 is an outer bag wrapping zone inner frame, 4 is an inner bag feeder, 5 is an inner bag carrier, 6 is an inner bag, and 7 is a filling nozzle. , 8 is an inner bag heat seal device, 9 is a load cell, 10
Is a mounting machine, 11 is an inner bag support, 12 is an inner bag support moving cylinder, 13 is a drop guide, 14 is an outer bag feeder, 15 is an outer bag carrier, 16 is an outer bag, 17 is an outer bag inflator, 1
8 is an outer bag heat seal device, 19 is a mounting machine, 20 is an outer bag support, 21 and 22 are outer bag support moving cylinders, 23
Is a motor, 24 and 25 are chains, and 26 is a shaft, respectively.

The inner bag wrapping zone A is disposed below the powder / granule filling nozzle and fills the inner bag 6 with the powder / granular material.
Is a zone for heat sealing. The inner bag packaging zone A has a mechanism for pulling and holding the inner bag and a mechanism for heat sealing the opening of the inner bag. The mechanism for pulling and holding the inner bag is mainly configured by the inner bag packaging zone support frame 1, the inner bag feeder 4, the inner bag carrier 5, the load cell 9, the mounting machine 10, etc., all of which are outer bag packaging. It is installed on top of the zone support frame. The inner bag feeder 4 is installed outside the support frame 1, and the inner bag carrier 5 is installed so as to be able to move in and out from the outside of the support frame 1. A large number of inner bags are stocked in the inner bag feeder 4, the inner bags are taken out one by one by a suction cup equipped in the inner bag carrier 5, lifted, and conveyed to the mounting machine 10, and both ends of the opening of the inner bag 6 Is supported by a chuck provided in the mounting machine 10. The filling nozzle 7 is installed above the support frame 1 so as to be vertically movable.

The mounting machine 10 is provided with a suction cup in addition to the chuck so that the upper portion of the inner bag 6 can be opened just below the filling nozzle 7. Inner bag 6 held by the mounting machine 10
The bottom of the drop guide 1 by the inner bag support 11.
It can be supported right above the opening of No. 3. Inner bag feeder 4
It is preferable to store a spare cassette in the cassette, and to automatically switch to another cassette when the inner bag stocked in one cassette is exhausted because continuous work becomes possible. Is the inner bag 6 a plastic film or
It is preferably prepared by a composite paper having a plastic film laminated on its inner surface.

After the inner bag 6 is positioned directly below the filling nozzle 7 with both ends of the opening of the inner bag 6 being supported by the chucks, the filling nozzle 7 is lowered by a mechanism (not shown), The tip is securely inserted into the opening of the inner bag 6, and the inner bag 6 is filled with the powder and granules from a powder or granular material tank (not shown). The amount of powder or granules filled in the inner bag 6 is measured by a measuring mechanism installed in the inner bag packaging zone support frame 1. The weighing mechanism preferably has a structure in which the mounting machine 10 is connected to the load cell 9, and the load cell 9 allows the inner bag 6
It is possible to directly measure the powder and granules to be packed in this. The filling nozzle 7 fills the inner bag with a predetermined amount of powder and granules, then removes it from the opening of the inner bag to prepare for the next filling of the inner bag.

If the powder and granules are filled in a state where both ends of the opening of the inner bag 6 are supported by chucks, the opening sags due to the weight of the powder and granules, and the opening cannot be preferably heat-sealed as it is. After raising the inner bag support 11 to eliminate the slack in the opening of the inner bag 6, the next heat sealing step is performed. The inner bag support base 11 is arranged above the inner frame 3 of the outer bag wrapping zone, which will be described later, and is connected to the chain 24 that is made operable by the motor 23, and the chain 24 is operated to move the outer bag wrapping zone. Along with the inner frame 3,
Alternatively, it is separately movable up and down on the outer bag wrapping zone support frame 2, and is also horizontally movable by the inner bag support base moving cylinder 12.

The heat-sealing mechanism for the opening of the inner bag has a function of heat-sealing the opening of the inner bag 6, and the heat-sealing device 8 for the inner bag plays the role. The inner bag heat-sealing device 8 preferably has a structure in which a pair of bars for heat-sealing the opening of the inner bag 6 are placed opposite to each other with the opening of the inner bag 6 interposed therebetween. In the drawing, an example is shown in which two bars are made to be able to approach and separate from each other by a mechanism (not shown) sandwiching the opening of the inner bag 6 held by the chuck of the mounting machine 10. A heater is built in the pair of bars and they are brought close to each other so that the heaters are energized to heat and press them, so that the area below the position held by the chuck at the opening can be heat-sealed. The heating method is preferably the impulse method, but is not limited to this.

In the outer bag wrapping zone B, the inner bag 6 is housed therein and then the opening of the outer bag 16 is sealed to form a product,
This is a zone for sending out the product, a mechanism for dropping the inner bag after heat sealing, a mechanism for holding the opening of the outer bag in an open state, an opening for the outer bag after receiving the dropped inner bag in the outer bag And a mechanism for transferring the sealed outer bag to the outside of the apparatus.

The outer bag packaging zone B is the inner bag support 1
1, inner bag support stand moving cylinder 12, drop guide 13,
Outer bag feeder 14, outer bag carrier 15, outer bag 16, outer bag inflator 17, outer bag sealing device 18, mounting machine 19, outer bag support 20, outer bag support moving cylinders 21, 22, motor 23 , Chain 24, 25, shaft 26 and the like. All of these are preferably installed in the space surrounded by the outer bag packaging zone support frame 2. In addition, the remaining portion excluding the outer bag feeder 14 and the outer bag carrier 15 is integrally attached to the inner frame 3 of the outer bag packaging zone, and has a structure that can be moved up and down while being integrated with the inner frame 3. Preferably.

The mechanism for dropping the heat-sealed inner bag is mainly composed of an inner bag support 11, a cylinder 12 and a drop guide 13. The inner bag 6 which has been filled with the powder and finished the heat-sealing operation is operated with the inner bag support moving cylinder 12 in a state in which both ends of the opening of the upper part of the inner bag 6 are held by the chuck, and the inner bag support is moved. 11 fall guide 1
3 is moved laterally from a position right above the opening. When the inner bag support 11 is disengaged from the opening of the drop guide 13 and the chucks holding both ends of the opening of the inner bag 6 are removed, the inner bag 6 falls into the drop guide 13 by its own weight. The drop guide 13 has a function of guiding the inner bag 6 downward. It is preferable that the drop guide 13 is arranged at the lower center of the inner bag wrapping zone support frame 1 and at the upper part of the outer bag wrapping zone B. The fall guide 13 is the inner frame 3 of the outer bag wrapping zone described later.
An opening is arranged on the upper side of the above, and a hole of a size that allows the inner bag 6 filled with the powder and granules to fall is arranged at the lower end. The surface on which the inner bag 6 filled with the powder and granules slides off is preferably lined with a resin in order to improve the sliding property.

The outer bag wrapping zone inner frame 3 is movable in the motor 23 and can be moved up and down in the outer bag wrapping zone support frame 2 by a chain 25 and a shaft 26. The inner bag 6 after the body is filled is received by the outer bag 16 and serves to seal the opening. The outer bag support 20 supports the outer bag 16 from below, and when heat-sealing the opening of the outer bag 16, performs a function of vertically positioning. When the inner bag support 11 is moved laterally, the inner bag 6 having the opening heat-sealed falls into the opening above the drop guide 13. After moving the inner bag support 11 sideways, the motor 23 is operated and the position is lowered by the chain 24 to prepare for the next support of the inner bag 6.

The mechanism for holding the opening of the outer bag in an open state mainly includes an outer bag feeder 14, an outer bag carrier 15, an outer bag inflator 17, a mounting machine 19, and an outer bag support 20. All of them are installed in the outer bag packaging zone support frame 2. It is preferable to install the drop guide 13, the outer bag inflating device 17, the mounting device 19, the outer bag supporting base 20, and the like in the inner frame 3 of the outer bag packaging zone.

A large number of outer bags are stocked in the outer bag feeder 14, and the outer bags are transported by a suction cup installed in the outer bag carrier 15.
The bags are taken out one by one, and the outer bag carrier 15 conveys the inner bag 16 to the mounting machine 19 while sucking the inner bag 16 onto the suction cup so that both ends of the opening of the outer bag 16 are supported by the chuck of the mounting machine 19. Outer bag feeder 1
It is preferable to have a structure in which a spare cassette is held in 4 and, when the outer bag stocked in one cassette is exhausted, the cassette is automatically switched to another cassette because continuous work is possible.

An outer bag inflator 17 having a function of blowing compressed air to the opening of the outer bag 16 is installed near the hole at the lower end of the drop guide 13. The outer bag 16 is supported by the chucks of the mounting machine 19 at both ends of the opening, and the outer bag inflating machine 1
The compressed air from 7 can be sent from the opening and completely inflated to the bottom. After the outer bag 16 is completely inflated to the bottom, the inner bag 6 is dropped into the outer bag 16 by reducing the distance for dropping the inner bag 6 as much as possible. To reduce the distance the inner bag 6 is dropped, the outer bag packaging zone inner frame 3
Should be raised. The vertical movement of the inner frame 3 of the outer bag wrapping zone is possible by operating the motor 23 and transmitting this movement to the chain 25 and the shaft 26.

The bottom of the outer bag 16 can be prevented from being damaged by adjusting and supporting the position of the outer bag support 20. That is, if both ends of the opening of the outer bag 16 are held by the chucks and the bottom of the outer bag 16 and the outer bag support 20 are too far apart from each other when the inner bag 6 is received, the outer bag 16 is too far away. Although the outer bag 16 may be damaged, the outer bag support 20 is attached to the bottom of the fully expanded outer bag 16.
If they are brought into contact with each other or are pushed upward so that the outer bag 16 is slightly loosened, it is possible to avoid damage when the inner bag 6 is received. It should be noted that a rubber plate,
If a shock absorbing material such as a foamed rubber plate or a foamed polyurethane is arranged, the shock when the inner bag 6 filled with powder particles is dropped can be alleviated.

The vertical position of the outer bag support base 20 can be adjusted by installing a cylinder in the inner frame 3 of the outer bag packing zone and below the outer bag support base 20. It is possible to move up and down independently regardless of up and down movement. The outer bag support base 20 preferably has a structure that can be moved up and down by a cylinder 21 installed below the outer bag support base 20, for example.

The outer bag 16 is preferably made of a plastic film, a composite paper having a plastic film laminated on the inner surface, a reinforced paper impregnated with plastic, or other reinforced paper. The mechanism for sealing the opening of the outer bag is the outer bag 1
When 6 is prepared from reinforced paper, it may be a device for sewing with a thread, but it is prepared from plastic film, composite paper in which a plastic film is laminated on the inner surface, reinforced paper impregnated with plastic, etc. In the case of the above, as in the inner bag 6, an impulse type heat sealing mechanism is preferable.

After sealing the opening of the outer bag 16, the product is a packaging bag, and the height of the outer bag support 20 is adjusted.
The chuck of the mounting machine 19 is removed, and the product is transferred to the target place by the mechanism for transferring the product to the outside of the apparatus. The mechanism for transferring the product to the outside of the apparatus tilts the outer bag support base 20 by a cylinder 22 installed below the outer bag support base 20, laterally rolls the outer bag by its own weight, and discharges it to the outside of the outer bag packaging zone B. .
In this case, if one or more belt conveyors are arranged adjacent to the outer bag packaging zone B and these belt conveyors are operated, the product can be easily transferred to the intended place.

[0025]

Industrial Applicability As described above, the powdery or granular material packaging and filling apparatus according to the present invention has the following advantageous effects, and its industrial utility value is extremely large. 1. In the case of the powder-packaging apparatus according to the present invention, since the inner bag and the outer bag are separately sealed, even if the heat-sealing of the inner bag is incomplete, the problem that the powder particles spill Does not occur. 2. In the case of the powder and granule packaging and filling device according to the present invention, continuous filling of powder and granules is possible, and even if the powder or granules are harmful, they do not come into direct contact with humans, which is environmentally friendly. There is no problem.

[Brief description of drawings]

FIG. 1 is a perspective view of an example of an automatic packaging and filling device according to the present invention.

FIG. 2 is a schematic front view of the automatic packaging and filling device shown in FIG.

[Explanation of symbols]

A ... Inner bag packaging zone B: Outer bag packaging zone 1 ... Inner bag packaging zone support frame 2 ... Outer bag packaging zone support frame 3 ... Inner frame of outer bag packaging zone 4… Inner bag feeder 5 ... Inner bag carrier 6 ... inner bag 7 ... Filling nozzle 8… Inner bag heat sealer 9 ... Load cell 10 ... Mounting machine 11 ... Inner bag support 12 ... Inner bag support stand moving cylinder 13 ... Fall guide 14 ... Outer bag feeder 15 ... Outer bag carrier, 16 ... Outer bag 17 ... Outer bag inflating machine 18 ... Outer bag sealing device 19 ... Mounting machine, 20 ... Outer bag support 21, 22 ... Outer bag support stand moving cylinder 23 ... Motor 24, 25 ... Chain 26 ... Axis

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junichi Nakayama 1 Toho Town, Yokkaichi City, Mie Prefecture Yokkaichi Plant, Mitsubishi Kasei Co., Ltd. (56) Reference JP-A-2-219703 (JP, A) JP-A-5 -294321 (JP, A) JP-A-56-123203 (JP, A) JP-A-62-28307 (JP, A) JP-A-53-63177 (JP, A) Jitsukaihei 5-58610 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65B 1/00-1/48 B65B 5/00-5/12 B65B 7/00-7/02 B65B 51/00-51/32

Claims (3)

(57) [Claims] 1. An inner bag package having a mechanism for pulling and holding the inner bag in a state where the opening of the inner bag is opened, and a mechanism for heat-sealing the opening after filling the powder and granules at a lower portion of the powder and granule filling nozzle. In the zone A and the lower part of the inner bag packaging zone, a mechanism for dropping the heat-sealed inner bag, a mechanism for holding the opening of the outer bag in an open state, after receiving the dropped inner bag in the outer bag,
An outer bag packaging zone B having a mechanism for sealing the opening of the outer bag and a mechanism for transferring the sealed outer bag to the outside of the apparatus. 2. The powder and granular material packaging and filling apparatus according to claim 1, wherein an impact absorbing material is arranged on the surface of the outer bag supporting base in the outer bag packaging zone B. 3. The powder and granular material packaging and filling apparatus according to claim 1, wherein the outer bag supporting base in the outer bag packaging zone B is provided with a mechanism capable of moving up and down.