JPS58160227A - Method and device for packing bag with valve with powdered and granular body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention provides a powder filling device in which an adhesive is applied in advance to the inner surface of a packaging bag with a valve, especially an inner surface of the valve opening, and dried. Insert it into.

This packaging bag is filled with powder or granules to a predetermined level through the filling pipe of the IM+ distributing device, and then the bag is tilted and then
The present invention relates to a method and an apparatus for sealing the valve port when the valve is removed from the filling pipe.

When a packaging bag with a valve is set for powder or granule filling, the filling tube of the device is inserted into the valve opening, and the powder or granule specified in the n1 specification is filled, the bag is tilted and overturned. During this process, the filled powder moves inside the bag, is pushed out to the valve part, and is automatically sealed by pressing the valve part from inside. It was customary.

However, the sealing effect of such a valve port is not perfect, and movement of the powder near the valve part that presses the valve part from the inside against the outer layer of the packaging bag occurs during bag handling and transportation. And Benroshi; L in the gap! From this time on, there is a risk that the powder or granules in the bag may spill out or insects may enter the bag, so recently, the filling pipe has been Inject an appropriate amount of adhesive onto the inner surface of the valve opening from the pores or slits arranged around the outer edge of the valve. Then, when the filled bag is removed from the filling tube, it is added from the powder inside. A method is used in which the valve portion is pressed by a pressing action, and the valve opening is positively sealed by gluing.

However, when this method is used, when the filled bag is removed from the filling tube, the powder particles remaining on the outer surface of the filling tube are dragged to the valve part, and the adhesive prevents the filling from giving up. Pre-wiring hole of pipe If filling IA bag adhesive work is performed continuously, M'+I gr: Normally, it does not occur that powder or granules are layered with adhesive in the pore or slit. Therefore, clogging can be prevented by simply injecting pressurized air from the pores or slits of both sets for a short period of time before spraying the adhesive, but it is necessary to stop the work for a rather long time and then restart it. In some cases, adhesion of powder particles progresses during that time, and f3il is
The clogging of the pores or slits cannot be completely removed,
A disadvantage is that the m pores or slits must be manually cleaned each time.

This invention VI Filling of powder and granules by the above-mentioned powder and granule filling device ζ1. Subsequently, the valve opening was made in order to solve the problems in the conventional sealing method and its device. Use a dried head cloth,
In addition to inserting the filling pipe of the powder filling device into the valve port and filling the portion with powder, the inner surface of the valve port described in @71 is rubbed with active liquid to adhere to the pre-distributed adhesive. When activating the powder and granular material filling rear sheath and separating it from the filling pipe,
The present invention provides a method of adhesively sealing a valve port by a suppressing action applied to the valve port from internal powder and granules, and a fitting neck.

Hereinafter, the method according to the present invention will be explained by giving examples and referring to the drawings.

Figure 1 shows the upper and lower ears closed at the perforations.
ilK gusset (1) [7, Top-〇 Shows an isthmus end sewing bag (3) with a check valve made of v4@kraft paper and equipped with a valve part (2) in the right corner.

3, 4 and 5 are explanatory diagrams showing the main parts of the apparatus for carrying out the method of the present invention, and FIG. 3 is a side sectional view of the filling tube and support part thereof, and FIG. 5 is a perspective view thereof, and FIG. 5 is a front view showing a state in which the bag is fully attached, with the pneumatic circuit drawn in.

The valve part (2) Kii is the filling pipe (4) of the powder filling device.
) When the bag is inserted into the casing, adhesive is applied in advance to the portion corresponding to the adjacent tube section (5)K, which is to be produced later, during bag making and thoroughly dried.

When the above-mentioned adhesive is dissolved in water or other bath agents, i.e., in an active amount, it immediately dissolves in a swamp [7.
For example, kraft paper is made of natural polymers such as casein and gum arabic, or synthetic polymers such as polyvinyl alcohol and polyvinyl ether (all of which are resistant to water. After rewetting, the bag (3) is removed from the filling tube (4). The open time is the time during which KG is applied until it is released, and one that is not affected by room temperature should be selected and used. However, for bags made of canvas, polystyrene is soaked into the valve part during bag making.
During MOW, use a solvent such as toluene or xylene as an activating liquid to make the valve part swell. When making bags, apply the above-mentioned fly-flying agent to the inner surface of the valve part. If the R bag process is difficult, cut it into 1-shaku strips (also apply front adhesive to one side of the kraft paper, let it dry, then apply regular adhesive to the other side, and this part will become the outer surface. Fold the chives together like this and sew them together at the same time as the ears of the bag (3) to form the W-wearing valve opening (6), and fix it in the position where the adhesive is applied to the valve part (2). Be sure to read the book carefully.
The bag shown in FIG. 1 shows this type of bag. An embodiment of the apparatus in which the valve-equipped packaging bag (3) configured as described above is inserted through the valve opening when filling powder or granule material will be described.

Filling 1! r (4) Fi filling device measuring frame (7) K
It is fixed in a cantilevered manner through the flange part (8). Although not shown, a powder and granule delivery pipe is connected via a flexible pipe joint, and the powder and granule supplied from the powder and granule hopper of the filling device by a scree conveyor (not shown) are fed into the pipe. Road (7)
The trap is such that it is forced into the filling tube (4) by the compressed air supplied through the tube (4).

The expansion pipe part (5) in contact with the inlet (9) 4C is a covered part of the rubber tube with its both ends fixed, and compressed air is sent in from the narrow f(A) connected to the pipe line Gυ. #7, increase the density on the inner peripheral surface of the valve part (2) of the bag (3) in a lemon shape, hold the bag (3) together with the lower support plate of the measuring frame (7), and insert the filling pipe at 1Lj1. It acts as a seal to prevent the powder extruded from the injection port (9) in (4) by compressed air from scattering to the outside. tubule 0)
The bag (3) is connected to a conduit (c) whose one end opens to the inlet (9) and the other end is opened to the outside air via the filter (2). This is to release the air released from the kraft paper itself when filling.
and the flange part (8), a humidifying part (dampener) made of felt or sponge material wrapped around the outer periphery of the filling tube (4). In this case, the humidifying part αυ is moistened with water because the active liquid of the adhesive is water.

The thin tube (3) is connected to the water tank (c) via a pipe line (c). The water tank (to) is a hermetically sealed container, and is fed from a compressed air source whose pressure is regulated to a constant IE force (for example, 7 kg/alO) through an on-off valve (b) and a pressure reducing valve to a predetermined pressure (for example, 1). S/dG)K Reduced pressure compressed air is introduced into the tank, and the water in the pressurized tank is piped by operating the on-off valve 1 intermittently for short periods of time. Road C! , (K so that the bag (3) can be sent out one by one, as shown in Figure 2, is gusseted by the suction cup of the handling mechanism of the filling device) When the filling pipe (4) is inserted into the valve part (2), the electromagnetic directional control valve (7) is activated, the circuit is switched, and the compressor is reduced to a predetermined pressure by the pressure reducing valve 6υ. Air passes through the pipe υ from the thin tube (A) to the expansion tube section (5) K
Kf sends a frame! f1 period 1. The pipe part (5)
The bag (3) is held on the inner circumferential surface of the valve part (2) along with the lower support plate Q of the weighing frame (7).

By the way, from the valve opening of the bag (3) to the valve part (2) K filling pipe (4)
) is extended, Vr, Fi, valve part (2) K is attached to the adhesive valve L1 part (6), at least a part of which is constantly moistened with water in the humidifying part a. Since the adhesive applied to the valve port g(6) is immediately dissolved by the moisture of the humidifying part qυ with which it comes into contact, its strong adhesive properties are activated. be done.

Then, by opening the electromagnetic on-off valve), the pipe line (7) is opened.
) is used to push out the powder and granules into the filling tube (4), and the pushed out powder and granules are discharged from the inlet (9) into the bag (3) along with the compressed air, and are gradually filled. Then, the excess air brought into the bag (3) passes from the thin tube (B) to the conduit ■, and the contained powder and granules are removed by the filter @, and it is discharged to the outside air. .

The powder and granular material thus filled into the bag (3) is automatically weighed via the weighing frame (7). When the measured value reaches the set value, the solenoid on-off valve) closes.
At the same time, the electromagnetic directional control valve is switched as shown in the diagram.
At the same time, the release of powder and granules is stopped and the tube is removed from the tube (tubular body). After passing through υ, the pressurized air in the expansion tube section (5) is discharged to the outside air Km, which is then contracted. Then, the lower support plate σQ holding the bottom of the bag (3) tilts downward, and the bag (3) tj filled with powder or granules falls while tilting toward the front in FIG. 5 due to its own weight. When falling, the internal powder presses the valve part (2), so as mentioned above, the adhesive valve part (6) whose strong adhesive properties have already been activated is
The adhesive-coated surfaces of ) are firmly adhered to each other, and the n% valve port is sealed. Since it takes some time for the adhesive applied to the adhesive valve part (6) to be applied with water and to adhere, the adhesive has an oven time that matches this waiting time. It is necessary to choose the agent.

Before starting the filling operation, the humidifying unit aDFi opens the end of the solenoid valve for a short time to supply pressurized water from the tank (c) to the pipe line.
The humidifying part (b) K must be supplied through the thin tube (a) to keep it moist.

During the filling operation, each time the valve opening (6) of the bag (3) comes into contact with the humidifier (0J)K, the water held in it is consumed little by little, and some of it is lost through evaporation, so the electromagnetic on-off valve is used. Operate the end intermittently and refill as needed. Therefore, since the humidifying part (dampener) aυ is always exposed, it is undesirable for floating particles such as cement to adhere to the surface. It is preferable to provide an annular tube at the base so that air is constantly flowing along the surface of the humidifying section αυ through the pores provided therein.

Furthermore, the activation liquid (water in this example) is replenished not by the means described above, but by, for example, the drive shaft of the powder and granular screw conveyor described above, including a squeezing pump for discharging a small amount)! ! It may also be possible to move the track and perform appropriate ruts continuously.

As for the bag, both the top and bottom bottoms are glued, and the valve part of packaging bags with various valves, such as the inner valve type double-bottomed one, which has a valve part uniformly on the front a pin, the outer valve type, and the side valve type, can be pre-attached to the valve part. Any material that has been coated with an adhesive and dried can be used.

As is clear from the above description of the structure and operation of the apparatus for carrying out the method of this application, the method for filling a valved packaging bag according to the present invention and the apparatus are capable of handling powder and granular materials. When filling,
Since there is no need to apply adhesive after filling powder or granules as in the past, cycle time can be shortened and filling and bagging efficiency can be increased. In order to prevent the adhesive injection pores or slits in the WtK from becoming clogged due to the powder, adhesive, and K, compressed air is injected through the pores or slits each time the filling process is performed, making the work a little longer. This eliminates the hassle of having to manually clean the process after it has been interrupted for a long period of time, and when restarting, it is highly effective for bagging powder and granular materials. .

[Brief explanation of the drawing]

Fig. 1 is a front view showing an example of a packaging bag with a valve, and Fig. 2 is a front view showing an example of a packaging bag with a valve.
FIG. 4 is a partial perspective view showing the valve part, FIG. An example of a pneumatic circuit is added to a front view showing an eyelid with a bag attached. (2)--Valve part, (3)--Packaging bag with valve (4)...Filling tube, (6)...Adhesive valve opening part Osu...Additional part (to)...・Water tank (activated liquid tank) No. 1 1 3 Figure 5 - Procedural amendment (1 set) 1 Indication of the case Showa 5 F1° Patent Application No. 03441φ・) Relationship with the case Patent applicant (1 place) Agent, Tenjin Morisu Q So1, Torihonmachi, Muko City, Kyoto Prefecture

Claims (1)

[Scope of Claims] 1. A packaging bag with a valve is coated with an IK adhesive network in the squares and dried, and a filling pipe of a powder filling device is inserted into the valve opening to fill the bag. When filling powder into the
The inner surface of the valve opening part is stimulated with activated g to activate the cocoon dpi adhesive rC layering property, tilt the powder filling rear sheath, and remove the powder inside when separating from the filling tube. A method for filling powder into a packaging bag with a valve, in which the valve port is adhesively sealed by a pressing force Vζ applied from the body to the valve port. 2. An activity that activates the adhesive properties of the adhesive that has been pre-applied to the inner surface of the valve opening and dried on the outer peripheral surface near the base of the filling tube of the powder filling device that comes into contact with the valve opening of the valved packaging bag during pushing. A device for filling a powder or granule material into a valved bag, which is provided with a heating section for leaching a liquid, and a means for replenishing the active liquid to the humidifying section.