JPH0441049Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention uses an automatic filling and sealing device for steamed rice to prevent the filling of steamed rice from the inside of the upper filling opening of the packaging bag, that is, the sealing surface of the packaging bag. This invention relates to a device for attaching rice grains to a sealed surface of packaged cooked rice, which improves the sealing performance by dropping and removing rice grains attached to the packaged rice.

(Prior art) A technology is already known in which steamed cooked rice is filled into a packaging bag made of synthetic resin film using an automatic filling and sealing device, and then the top filling opening of the packaging bag is sealed by heat fusion. .

(Problem to be solved by the invention) However, as mentioned above, in the case of the conventional device that simply performs the rice filling operation and the sealing operation in a continuous series using the automatic filling and sealing device, it is difficult to wrap the rice during the filling operation. Rice grains often adhere to the sealing surface of the bag, and if the bag is heat-sealed with the rice grains still attached to the sealing surface, the sealing surfaces formed by the opposing inner surfaces of the filling port will not be in complete contact with each other. There was a problem that a strong seal could not be achieved, leading to a decrease in sealing performance, leading to premature spoilage of the packaged cooked rice, leakage during the distribution process, and bag breakage.

This invention was developed to solve the above-mentioned problems, and it makes sure that the rice grains that adhere to the sealing surface of the packaging bag fall into the packaging bag when filling with cooked rice, making the filling port completely and strongly. An object of the present invention is to provide a device for preventing rice grains from adhering to a sealing surface of packaged cooked rice that can be sealed.

(Means for Solving the Problems) In order to achieve the above object, the device for preventing rice grains from adhering to the sealed surface of packaged cooked rice according to the present invention is designed to prevent rice grains from adhering to the sealed surface of packaged cooked rice. At least on both the front and back surfaces of the packaging bag above the cooked rice filling level at a location close to the trajectory during which it is conveyed from the cooked rice filling position to the heat sealing position while being gripped and the upper end filling port is open. It is equipped with an air injection nozzle that blows a stream of compressed air toward one side.

(Operation) According to the present invention having the above-mentioned configuration, when the synthetic resin film packaging bag filled with cooked rice is conveyed from the cooked rice filling position to the heat sealing position, a compressed air flow is blown toward the surface of the packaging bag above the cooked rice filling level, whereby high-frequency vibrations are generated in the portion of the packaging bag above the cooked rice filling level.
This vibration causes rice grains adhering to the sealing surface to fall and be removed into the packaging bag, ensuring the next heat seal is complete.

(Example) Fig. 1 shows a schematic plan view showing one embodiment of the present invention. In the figure, 1 is an automatic filling and sealing device for steamed rice, and in this embodiment, an intermittent rotation drive type device is shown. Both side edges 3a, 3a of the synthetic resin film packaging bags 3 sequentially supplied from the packaging bag supplying means 2 at the carry-in position A are gripped by the gripping arms 1A, 3a of the gripping mechanism.
It is gripped by the gripping claws 1a, 1a attached to 1A and sent to the filling port opening position B, and at this position, the gripping arms 1A, 1A are actuated to release the gripping claws 1a, 1A.
1a in the approaching direction, and open the upper end filling port 3 of the packaging bag 3 by a filling port opening means (not shown).
A is released.

The packaging bag 3 with the upper end filling port 3A opened is sent to the cooked rice filling position C, where it is filled with a fixed amount of steamed rice 5 from the hopper 4.

Next, the gripping arms 1A, 1A are operated to move the gripping claws 1a, 1a in the direction of separation, and the packaging bag 3
While closing the upper end filling port 3A and pressing and holding the outer surface of the cooked rice filling area of the packaging bag 3 from the front and back by a pressing mechanism (not shown), the upper end filling port 3A is closed at the sealing position D by a well-known heat sealing machine 6. It is configured to be sealed.

Although the automatic filling device 1 is described as being of an intermittent rotation drive type in this embodiment, it may be of an intermittent linear movement type.

An injection nozzle 7 is arranged close to the conveyance path R from the cooked rice filling position C to the sealing position D. The injection nozzle 7 communicates with a compressed air supply source 8 through a passage 11 provided with, for example, a dehumidifier 9 and a solenoid valve 10, so that the packaging bag 3 filled with cooked rice 5 reaches the air injection position E. In synchronization with the passage, the solenoid valve 10 is opened and a compressed air flow is sprayed onto the packaging bag 3 from the injection nozzle 7.

As shown in FIG. 2, the spray nozzle 7 is oriented and arranged so that a compressed air stream is sprayed onto the surface of the packaging bag 3 above the level at which it is filled with cooked rice.

With such a configuration, the packaging bag 3 filled with cooked rice 5 at the cooked rice filling position C in FIG. When passing through the air injection position E, the air flow injected from the injection nozzle 7 is blown onto the surface of the packaging bag 3 in FIG. 2 above the cooked rice filling level, and flutters above the filling level L. In other words, high frequency vibrations are generated. This vibration actually spreads to the back surface above the filling level L in the packaging bag 3, effectively vibrating both the front and back surfaces. Even if rice grains adhere to the sealing surface that is heat-sealed in the step, the rice grains are surely dropped from the sealing surface into the inside of the packaging bag 3 and removed by the aforementioned vibration.

In the above embodiment, the spray level 7 is arranged to be directed only to the surface above the cooked rice filling level L of the packaging bag 3 filled with cooked rice 5, but the present invention is applicable only to the above embodiment. The present invention is not limited to this, and the spray nozzle 7 may be arranged so as to be directed only to the back surface above the cooked rice filling level of the packaging bag 3 filled with cooked rice 5, or may be arranged to be directed to both surfaces of the filling level. It may be arranged and configured.

However, the injection nozzle 7 is directed toward the back side of the packaging bag 3.
A configuration in which the components are placed facing toward the surface has the advantage of not being restricted by installation space.

(Effects of the invention) As described above, according to the invention, during the trajectory in which the packaging bag made of synthetic resin seal filled with cooked rice is conveyed from the cooked rice filling position to the heat sealing position,
By blowing a stream of compressed air toward the surface of the packaging bag above the rice filling level, high-frequency vibrations are generated in the area above the rice filling level of the packaging bag, and this vibration causes the particles to stick to the sealing surface. The rice grains inside the container can be reliably separated and dropped into the packaging bag, so at the next heat-sealing position, the sealing surfaces on the opposite inner surfaces of the filling port are brought into close contact with each other, ensuring a reliable and strong seal. Therefore, the sealing performance can be significantly improved,
It can prevent premature spoilage of packaged rice, leakage during the distribution process, and bag breakage.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing an embodiment of the present invention;
FIG. 2 is a perspective view showing an example of an air injection state. 3...Packaging bag, 5...Rice, 7...Injection nozzle, C...Rice filling position, D...Sealing position, R
...Trajectory.

Claims (1)

[Scope of utility model registration request] A packaging bag made of synthetic resin film filled with cooked rice is gripped at its both edges and the top filling port is opened, and the package bag approaches the track in the middle of the track that transports it from the cooked rice filling position to the heat sealing position. In the place,
A device for preventing rice grains from adhering to a sealed surface of a packaged cooked rice, characterized in that the device is equipped with an air injection nozzle that blows a compressed air flow toward at least one of the front and back surfaces of the packaging bag above the rice filling level.