JP2000043819A - Deaeration apparatus for granular food package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To certainly and completely exhaust air inside a packaging bag in a short period of time with efficiency without spoiling the external appearance of the packaging bag and deteriorating quality of commodity and without allowing granular food to be crushed in either case where the packaging bag is fed with its labyrinthine seal positioned at the front end side or being fed with its labyrinthine seal positioned at the rear end side. SOLUTION: When a packaging bag 24 sealed up with a labyrinthine seal with granular food housed therein is fed into a space between the upper and the lower conveyors 35 and 36, the bag is conveyed by belts 45 and 57 of the upper and the lower conveyors 35 and 36 with pressure applied by elastic urging force, and the packaging bag 24 is also conveyed between the upper and the lower conveyors 35 and 36 while being interposed and squeezed in waving motion between the upper and the lower rollers 44 and 56 that are lagging by a half pitch each other while the upper conveyor 35 is moved up and down in seesawing, and the air inside the packaging bag 24 is exhausted to the outside through an air vent passage of the labyrinthine seal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a granular food which removes air mixed in the bag together with the granular food when the granular food such as rice, soybean and corn is put into a resin packaging bag and sealed, for example. The present invention relates to a device for removing air from a packaging bag.

[0002]

2. Description of the Related Art Conventionally, granular foods such as rice, soybeans and corn have been packed in bags, transported and sold as shown in FIG. However, when the granular food is put into the bag and air is mixed in and the inlet 1a is sealed, for example, when the packaging bag 1 is made of resin, there is no place for air to escape, and the bag is swollen and bulky and the external pressure is reduced. If added, it may explode, but it is inconvenient for transportation and storage, and there is a problem that the commercial value is reduced.

[0003] For this reason, in the past, 2 mm
A plurality of small holes 1b described below were provided, and air in the bag was spontaneously released through the small holes, or was forcibly discharged by weight by stacking. However, if the small holes 1b are provided on the front and back of the packaging bag 1, foreign matters such as water and dust enter therethrough, which is not preferable from the viewpoint of food hygiene and safety.

Therefore, recently, as shown in FIG. 7, for example, linear crimping portions a and b are provided on the mating surface of the inlet 1a, and the granular food in the bag escapes to the inner crimping portion a. To the extent that there is no uncompressed air vent passage
Are provided with a number of uncompressed air vent passages B which are larger than the uncompressed air vent passages A, and a packaging bag 1 having a so-called labyrinth seal at the inlet 1a is beginning to be used.

That is, in the non-perforated packaging bag 1 having such a maze seal c, the air vent passages I and B are formed in a maze shape so that foreign matters such as water and dust do not easily enter the bag. On the other hand, the air in the bag can be discharged to the outside through the air vent passages a and b of the maze seal c.

However, in such a packaging bag 1 with a maze seal c, if air is naturally released, it takes 10 seconds or more per bag, so that an operator presses from above to release the air in the bag. Or was. However, the workability is poor in this case, and in the past, the following air venting device was sometimes used.

[0007] As shown in FIG. 8, for example, as shown in FIG.
a) is sent between the upper and lower conveyors 2.3 so that the maze seal c is on the rear side, and the packaging bag 1 is conveyed by the upper and lower belts 4 and 5 of the upper and lower conveyors 2, 3 while the upper and lower conveyors 2 and 3 are conveyed. A plurality of upper and lower rollers 6 and 7 provided on the conveyors 2 and 3 corresponding to the upper and lower sides, respectively, are sequentially sandwiched.

Then, linear pressure is sequentially applied from the leading end of the packaging bag 1 by the rollers 6 and 7 corresponding to the upper and lower sides, and air is sent so as to be squeezed toward the rear end side. Discharge to

Pressing method by press For example, as shown in FIG. 9, the conveyor 8 is stopped, the packaging bag 1 on the belt 9 is stopped at a predetermined position, the cam 10 is rotated, and the lever 11 is reciprocated about the support shaft 12. The packaging bag 1 is repeatedly rotated and pressed by the pressing plate 13 to repeatedly apply the surface pressure to the entire packaging bag 1 and discharge the air in the bag to the outside through the air vent passages I and B of the maze seal c.

[0010] For example, as shown in FIG. 10, as shown in FIG. 10, the conveyor 14 is stopped to stop the packaging bag 1 on the belt 15 at a predetermined position, or a jig at the same speed as the belt 15 while the conveyor 14 is driven. 1
While moving 6, the jig 16 is lowered to pierce the plurality of needles 17 into the packaging bag 1, and the pump 18 is operated to suck air in the bag.

Thereafter, the jig 16 is raised and the needle 17 is moved.
Is pulled out, the packaging bag 1 is conveyed, and in the next step, the fed tape 19 is cut and attached, and the needle hole formed in the packaging bag 1 is closed.

[0012]

However, each of the above-described conventional air vent devices has the following problems.

In the case of a squeezing method using a conveyor, air is sent so as to be squeezed from the front end of the packaging bag 1 toward the rear end, and is discharged from the air vent passages a and b of the maze seal c at the rear end. The packaging bag 1 must be fed so that it is on the rear end side. In the packaging machine that sends out the maze seal c toward the front end side, a device for reversing the direction of the packaging bag 1 in the middle must be provided. Was.

In the case of a pressing method using a press When applying a surface pressure to the entire packaging bag 1, if the surface pressure is small, the air in the bag cannot be completely discharged. If the surface pressure is large, the external pressure applied at a stretch The granular food in the bag sometimes cracked.

In the case of a suction method using a needle When a thick needle 17 is used, the needle hole formed in the packaging bag 1 becomes large. In particular, when the timing of removing the needle 17 is delayed, the needle hole becomes elliptical, and even if the tape 19 is used. Even if it is closed, the commercial value of the packaging bag 1 has been reduced. When the fine needle 17 is used, foreign matter in the packaging bag 1 is clogged in the needle 17 and air bleeding is insufficient.

Further, in this method, a next step for attaching the tape 19 must be provided, and the work time is lengthened accordingly.

Accordingly, the present invention has been made in view of the above circumstances in the prior art, and does not cause cracking of the granular food regardless of whether the maze seal is fed in as the front end side or in the rear end side. A first object is to discharge air from a packaging bag.

Further, the air in the packaging bag can be efficiently and completely discharged in a short working time without impairing the appearance of the packaging bag, lowering the commercial value, or causing cracks in the granular food. The second object is to do so.

[0019]

In order to achieve the first object, the invention according to claim 1 introduces granular food, for example, as in the embodiment described with reference to the following drawings. When the packaging bag 24 sealed with the maze is sent between the upper and lower conveyors 35 and 36, the plurality of upper and lower rollers 44 and 44 provided on the upper and lower conveyors 35 and 36 respectively are conveyed by the belts 45 and 57 of the upper and lower conveyors 35 and 36.
The upper conveyor 35 is elastically biased toward the lower conveyor 36 in an air release device for a granular food packaging bag in which the air in the packaging bag 24 is sequentially discharged through the air release passage of the maze seal. In addition, the distance M between the upper and lower conveyors 35 and 36 can be adjusted.

According to the first aspect of the present invention, when granular foods are charged and the maze-sealed packaging bag 24 is fed between the upper and lower conveyors 35 and 36, the upper and lower conveyors 35 are pressed while being elastically biased.・ 36 belts 45 ・
The upper conveyor 35 is sequentially lifted up and down in a seesaw manner and passed between the upper and lower conveyors 35 and 36 while being transported by the upper conveyor 35. Finally, the rear end side is sequentially pressed, and the portion is sequentially sandwiched by the plurality of upper and lower rollers 44 and 56, and the air in the packaging bag 24 is discharged to the outside through the air vent passage of the maze seal.

According to a second aspect of the present invention, in order to achieve the second object, as in the embodiment described with reference to the following drawings, for example, a packaging bag 24 filled with granular food and sealed with a maze is provided. , When sent between the upper and lower conveyors 35 and 36, the belts 45.5 of the upper and lower conveyors 35 and 36
7 while being conveyed by a plurality of upper and lower rollers 44 and 56 provided on the upper and lower conveyors 35 and 36, respectively.
In the air release device for a granular food packaging bag which discharges the air inside 4 through the air release passage of the maze seal, the plurality of upper and lower rollers 44 and 56 are provided vertically shifted by a half pitch. I do.

According to the second aspect of the present invention, when the packaging bag 24 having the maze sealed by feeding the granular food and being fed between the upper and lower conveyors 35 and 36, the belts 45 and 57 of the upper and lower conveyors 35 and 36 are used. A plurality of upper and lower rollers 44.
The air in the packaging bag 24 is discharged to the outside through the air vent passage of the maze seal while passing between the upper and lower conveyors 35 and 36 while being conveyed in a wave-like manner and conveyed in a tight manner.

According to a third aspect of the present invention, in order to achieve the first and second objects, as in the embodiment described with reference to the following drawings, for example, a package in which granular food is charged and maze sealed is provided. When the bag 24 is fed between the upper and lower conveyors 35 and 36, the upper and lower conveyors 35 and 36 are conveyed by the belts 45 and 57 of the upper and lower conveyors 35 and 36.
Are sequentially sandwiched by a plurality of upper and lower rollers 44 and 56 provided respectively,
In the air release device for a granular food packaging bag which discharges the air in the packaging bag 24 to the outside through the air release passage of the maze seal, the upper conveyor 35 is connected to the lower conveyor 36.
And the upper and lower conveyors 35
The gap M between the rollers 36 is adjustable, and the plurality of upper and lower rollers 44 and 56 are provided so as to be shifted vertically by a half pitch.

According to the third aspect of the present invention, when granular foods are charged and the maze-sealed packaging bag 24 is fed between the upper and lower conveyors 35 and 36, the upper and lower conveyors 35 are pressed while applying elastic pressure.・ 36 belts 45 ・
The upper conveyor 35 is moved up and down in a seesaw manner while being conveyed by the upper and lower rollers 44 and 56.
The air in the packaging bag 24 is discharged to the outside through the air vent passage of the maze seal while passing between the upper and lower conveyors 35 and 36 while transporting the packaging bag 24 in a wave-like manner while squeezing it.

[0025]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic configuration of a rice packaging machine. In front of the air release device according to the present invention, for example, a rice packing machine as shown in FIG. 1 is installed. Reference numeral 20 in the figure indicated by a two-dot chain line is a packaging machine main body.

The main body 20 of the packaging machine includes a foreign matter removing device 2
1. Then, the foreign matter is finally removed from the rice reservoir 22 for receiving the rice after removal, the weighing machine 23 for weighing the rice, the funnel 25 for guiding the weighed rice to the packaging bag 24, and the rice is unwound from the bag roll 26. A cutter 28 for cutting the bag sheet 27, a crimping machine 29 for sealing the inlet and outlet of the bag sheet 27, and the like are provided.

Then, the rice from a tank (not shown) is introduced into the contaminated foreign matter removing device 21 through the pipe 30, the foreign matter is removed by the contaminated foreign matter removing device 21, and the rice is dropped onto the rice reservoir 22.

The rice reservoir 22 is composed of a pair of receiving members 32 that open left and right about a shaft 31. The rice on the rice storage 22 falls into the weighing machine 23 by opening the pair of receiving members 32 left and right. And it measures with the measuring machine 23,
Every predetermined amount is put into the packaging bag 24 through the funnel 25.

The wrapping bag 24 draws out the wrapping bag 27 from the wrapping roll 26 and sequentially supplies the wrapping bag 27 into the wrapping machine main body 20 from the rear.
cut with a cutter 28 in front of a, and then funnel 25
And hold it upright with the mouth up.

After the rice is put into the packaging bag 24, the opening is
Then, as shown in FIG. 1, the complete seal 24b is first placed on the maze seal 24a side, and conversely, as shown in FIG. 2, the maze seal 24a is placed first on the complete seal 24b. Later, it is sent out, conveyed by a conveyor or the like, and sent into, for example, an air vent device according to the present invention.

FIG. 3 is a partial external perspective view of the air vent device according to the present invention, and FIG. 4 is a longitudinal sectional view thereof. In the figure, reference numeral 35 denotes an upper conveyor, and 36 denotes a lower conveyor.

The upper conveyor 35 has a parallel frame 38
・ Install 39 before and after. Both frames 38 and 39 have a U-shaped vertical cross section, and are installed such that they face each other with their vertical portions facing each other. Both frames 38.3
At one end (the right side in the figure) of 9, not shown, shaft holes are provided facing each other in the front and rear direction, a roller shaft 40 is passed through these shaft holes, and a driving roller 41 is supported between both frames 38 and 39. It becomes.

On the other hand, the other end portions (left side in the figure) of both frames 38 and 39 are likewise opposed to the front and rear, and elongated holes 38a and 39 are similarly provided.
a is provided, and the roller shaft 42 is inserted into the long holes 38a and 39a.
And the driven roller 43 is supported between the frames 38 and 39.

A plurality of rollers 44 are provided between the driving roller 41 and the driven roller 43 at a constant pitch in parallel with the driving roller 41 and the driven roller 43, and are rotatably supported by the frames 38 and 39. Then, an endless belt 45 is wrapped around the driving roller 41, the driven roller 43, and the plurality of rollers 44, and a force in the direction of arrow a is applied to the roller shaft 42 of the driven roller 43 by means (not shown) to apply the belt 45 to the belt 45. It is provided with tension.

The two frames 38 and 39 are provided with a pair of through-holes penetrating the upper and lower horizontal portions at positions corresponding to the upper and lower portions at right and left intervals. Holes are also provided between the frames 38 and 39 so as to correspond to the front and rear. The screw shafts 46 are inserted into the respective through holes with a margin.

FIG. 5 shows a longitudinal section along one screw shaft 46. As can be seen from FIG. 5, each screw shaft 46 has a flange portion 46a at the upper end and a screw portion 46b at the lower portion. Then, a compression coil spring 47 is inserted between the flange 46a and the upper horizontal portion of the frames 38 and 39, and the screw portions 46b penetrating the pair of through holes are screwed into the nuts 48, respectively, and the nuts 48 are rotated. Thus, the distance L between the flange 46a and the upper horizontal portions of the frames 38 and 39 can be adjusted.

On the other hand, the lower conveyor 36 is similarly provided with parallel frames 50 and 51 in front and behind. Both frames 50 and 51 have a U-shaped vertical cross section, and are installed like a back to back with their vertical portions facing each other. One end of both frames 50 and 51 (right side in the figure)
Although not shown, shaft holes are provided facing each other in the front-rear direction, and a roller shaft 52 is passed through the shaft holes to
The drive roller 53 is supported between them.

On the other hand, the other end portions (left side in the figure) of both frames 50 and 51 are likewise opposed to each other in the front-rear direction and have long holes 50a and 51a.
And the roller shaft 54 is passed through the long holes 50a and 51a to support the driven roller 55 between the frames 50 and 51.

A plurality of rollers 56 are provided between the driving roller 53 and the driven roller 55 at a constant pitch in parallel with the driving rollers 53 except for both right and left ends, and are rotatably supported by the frames 50 and 51. The plurality of rollers 56 are provided at the same pitch as the above-described plurality of rollers 44 of the upper conveyor 35 and are vertically shifted by a half pitch. And the driving roller 53
And an endless belt 57 is wound around the driven roller 55 and the plurality of rollers 56, and a force is applied to the roller shaft 54 of the driven roller 55 in a direction indicated by an arrow b in FIG.
Tension.

By the way, the supporting members 58 are fixed to the upper horizontal portions of the frames 50 and 51 at right and left intervals, and the supporting members 58 are attached to the frames 50 and 5.
It is provided corresponding to the front and rear in one space.

The screw portions 46b are screwed into the center female screw holes of the support members 58, respectively, to
A screw shaft 46 is erected on the upper horizontal portion of 0.51 and the upper conveyor 35 is supported on the lower conveyor 36 via the screw shafts 46.

In the illustrated example, the distance M between the upper and lower conveyors 35 and 36 can be adjusted by receiving the upper conveyor 35 with the nut 48 and adjusting the screwing amount of the screw shaft 46 into the center female screw hole of the support member 58. I do. This adjusts the space between the upper and lower conveyors to the optimum distance M, and prevents the granular food in the packaging bag from cracking by the pressing force of the upper conveyor based on the elastic urging force, while completely removing the air in the packaging bag. And it can be discharged reliably.

Now, for example, when the rice packaging bag 24 filled with rice and sealed in the maze is fed between the upper and lower conveyors 35 and 36 by a packaging machine as shown in FIG. 1, the elastic urging force of the compression coil spring 47 is applied. While applying pressure, the upper conveyor 35 is conveyed by the belts 45 and 57 of the upper and lower conveyors 35 and 36, and at the same time, the upper conveyor 35 is sequentially lifted and moved up and down in a seesaw manner and passed between the upper and lower conveyors 35 and 36.

Then, with the transport of the rice packaging bag 24, the top side of the rice packaging bag 24 is first sandwiched by the upper conveyor 35,
When the maze seal is on the rear end side, the air in the bag is discharged from the air vent passage to the outside. Then, as shown in FIG. 4, the central portion of the rice packaging bag 24 is sandwiched, and when the maze seal is on the rear end side, the air in the bag is completely exhausted there. The air in the bag starts to be discharged to the outside from the passage. Finally, the rear end side of the rice packaging bag 24 is sandwiched, and when the maze seal is at the front end side, the air in the bag is completely exhausted there.

At the same time, the sheet is simultaneously sandwiched by a plurality of upper and lower rollers 44 and 56 which are provided on the upper and lower conveyors 35 and 36 and which are shifted by a half pitch in the vertical direction. Conveyor 35
The air in the rice packaging bag 24 is discharged to the outside through the air vent passage of the maze seal through the space 36.

In the present invention, the maze seal is
It goes without saying that the air vent passage is not limited to the one shown in FIG. Also,
Of course, the configuration of the upper and lower conveyors 35 and 36 is not limited to the illustrated example.

[0047]

Therefore, according to the first aspect of the present invention, when the upper conveyor is elastically urged toward the lower conveyor, the granular food is charged, and the maze-sealed packaging bag is fed between the upper and lower conveyors. , While applying pressure with elastic urging force, it is transported by the belts of these upper and lower conveyors,
The upper conveyor is moved up and down in a seesaw manner while passing between the upper and lower conveyors.First, the top side of the packaging bag is pressed by the upper conveyor, then the center part, and finally the rear end side is pressed in order and sandwiched by a plurality of upper and lower rollers in order. Even when the maze seal is sent as the front end side or the rear end side, the air in the packaging bag can be reliably discharged to the outside through the air vent passage of the maze seal.

Further, since the interval between the upper and lower conveyors can be adjusted, by adjusting the interval to an optimum interval, the granular food in the packaging bag is cracked by the pressing force of the upper conveyor based on the elastic urging force. In this case, the air in the packaging bag can be completely and reliably discharged.

According to the second aspect of the present invention, when granular foods are charged and the maze-sealed packaging bag is sent between the upper and lower conveyors, the bag is conveyed by the belts of the upper and lower conveyors, and the conveying is carried out. The sheet is successively sandwiched between a plurality of upper and lower rollers shifted in pitch, conveyed in a wave-like manner, and passed between the upper and lower conveyors while being squeezed.

Therefore, since no holes are formed, the commercial value is not reduced without impairing the appearance of the packaging bag. Further, since a large pressing force is not applied to the packaging bag at a stretch, the granular food does not crack. In addition, since it only passes between the upper and lower conveyors and does not require the next step of attaching tape to the packaging bag, the air in the packaging bag can be efficiently discharged to the outside through the air release passage of the maze seal in a short working time. It can be completely and reliably discharged.

According to the third aspect of the invention, both the effects of the first aspect of the invention and the effects of the second aspect of the invention can be achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a schematic configuration of a rice packing machine installed in front of an air vent device according to the present invention.

FIG. 2 is an explanatory perspective view showing another example of sending out a packaging bag from the rice packaging machine.

FIG. 3 is a partial external perspective view of the air vent device according to the present invention.

FIG. 4 is a longitudinal sectional view of the air vent device.

FIG. 5 is a longitudinal sectional view along one screw shaft in the air venting device.

FIG. 6 is an external perspective view of a packaging bag for storing granular food.

FIG. 7 is a partially enlarged perspective view illustrating a maze seal provided on the packaging bag.

FIG. 8 is an explanatory schematic configuration diagram of a conventional constrictor-type air vent device using a conveyor.

FIG. 9 is an explanatory schematic configuration diagram of a conventional press-type air bleeding device using a press.

FIG. 10 is an explanatory schematic configuration diagram of a conventional suction type air bleeding device using a needle.

[Explanation of symbols]

 24 Packaging bag 35 Upper conveyor 36 Lower conveyor 44 Upper roller 45 Belt 56 Lower roller 57 Belt M Distance between upper and lower conveyors

Claims (3)

[Claims] When a packaging bag filled with granular food and sealed in a maze is fed between upper and lower conveyors, the packaging bag is conveyed by the upper and lower conveyor belts and sequentially sandwiched by a plurality of upper and lower rollers provided on the upper and lower conveyors. In the air release device of the granular food packaging bag that discharges the air in the packaging bag to the outside through the air release passage of the maze seal, the upper conveyor is elastically biased toward the lower conveyor,
An air venting device for a granular food packaging bag, wherein an interval between the upper and lower conveyors can be adjusted. 2. When a packaging bag filled with granular food and sealed in a maze is sent between upper and lower conveyors, the packaging bag is conveyed by the upper and lower conveyor belts and sequentially sandwiched by a plurality of upper and lower rollers provided on the upper and lower conveyors. An air release device for a granular food packaging bag that discharges air in a packaging bag to the outside through an air release passage of the maze seal, wherein the plurality of upper and lower rollers are provided shifted vertically by half a pitch. apparatus. 3. When a packaging bag filled with granular food and sealed in a maze is sent between upper and lower conveyors, the bag is conveyed by the upper and lower conveyor belts and sequentially sandwiched by a plurality of upper and lower rollers provided on the upper and lower conveyors. In the air release device of the granular food packaging bag that discharges the air in the packaging bag to the outside through the air release passage of the maze seal, the upper conveyor is elastically biased toward the lower conveyor,
An air venting device for a granular food packaging bag, wherein the interval between the upper and lower conveyors is adjustable, and the plurality of upper and lower rollers are provided shifted vertically by a half pitch.