JP2003200901A - Bagging tube for powdered material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bagging tube for powdered materials, capable of maintaining a necessary and sufficient deaeration quantity without any possibility that a packaging bag closes a deaeration port even in the case where powdered materials are bagged at a high speed, and sufficiently preventing the packaging bag from being ruptured by the lowering of a deaeration efficiency or the powdered materials from being discharged accompanying the exhaust of air. <P>SOLUTION: The bagging tube for powdered materials has a bagging tube main body and a filling port for filling powdered materials into a packaging bag. The bagging tube comprises: a top end filling part to be inserted into the packaging bag; a hollow deaeration tube with a deaeration port which is opened in a wall face of the top end filling part positioned in the vicinity of the filling port to be inserted into the packaging bag and which is provided to deaerate air included together with the powdered materials in the packaging bag while passing through the interior of the bagging tube main body when the packaging bag is filled with the powdered materials, and also with the other opening which exhausts air deaerated through the deaeration port to the exterior of the packaging bag and which is defined in a portion of the bagging tube main body, of which the portion is not inserted into the packaging bag; and at least one protrusion which is provided in the vicinity of the periphery of the deaeration port at the top end filling part and which protrudes in a substantially vertical direction with respect to the wall face. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder bag packing apparatus of a nozzle blowing type, which is used as a blowing nozzle when a powder packing bag is packed. is there.

[0002]

2. Description of the Related Art Generally, packing of powder such as wheat flour into a packaging bag is performed by a powder filling and packaging machine, that is, a powder packaging device. The packing of powder by the powder packing device is performed by blowing the powder into the inside of the packaging bag together with air from a blowing nozzle inserted into the packaging bag. At this time, the expansion tube made of rubber attached to the blowing nozzle swells to prevent powder leakage, and seals between the blowing nozzle and the packaging bag, so air does not come out from the insertion port of the packaging bag and the bag does not come out. Only a slight amount of air leaks from the paper gaps and unavoidable gaps in the bag making process, and the air that is inevitably mixed when the powder is packed into the packaging bag is naturally small. There is a problem that the packaging bag is ruptured, the powder is blown out together with air, the powder filled in the packaging bag is reduced, and the working efficiency and the working environment are deteriorated.

In order to solve such a drawback, even in the conventional blowing nozzle, the portion of the powder-filled tube to be inserted into the packaging bag, for example, the filling port side for filling the powder or the filling port side. By providing an open deaeration port on the non-exhaust side and discharging gas such as air supplied to the packaging bag at the same time as the powder from the deaeration port to the outside of the packaging bag, the packaging bag may burst or may not It has been devised to prevent the powder from squirting.
For example, Japanese Utility Model Application Laid-Open No. 55-12431 discloses a device relating to a deaeration device in a packaging bag for nozzle blowing type bagging work, and Japanese Utility Model Application Laid-Open No. 59-96102 discloses gas suction under a powder supply nozzle. A device relating to a flow packer provided with a mouth and Japanese Utility Model Laid-Open No. 63-86001 disclose a degassing pipe arranged in a blowing pipe of a powder bagging device and hermetically seal a bag opening into which a blowing nozzle is inserted. There is disclosed a device relating to a blow pipe in which an expansion pipe for performing the above is provided on the outer peripheral portion of the degassing pipe.

[0004]

However, for example, 25k
g With a high-speed powder bagging device with a powder filling speed of 10 seconds or less, the powder bag filling tube is inserted into the opening (valve mouth) of the packaging bag to fill the powder bag filling tube. When filling powder from the mouth, in order to prevent the powder from entering the degassing port during degassing, the degassing port opened on the side not on the filling port of the powder bag tube, for example, on the outer wall surface of the tube. Are provided. However, even in this case, recently, the filling speed has been increased, and the flow rate of air to be degassed has increased.
Due to the weight of the packaging bag, the bag constituent material such as paper bag at the opening of the packaging bag easily contacts the deaeration port, and if a part or all of the deaeration port is blocked, the deaeration efficiency decreases and the packaging bag There is a problem in that it may not be possible to sufficiently prevent the powder from bursting and the powder flowing out together with gas such as air.

An object of the present invention is to provide a deaeration port for deaerating a gas such as air filled in the packaging bag at the same time as the powder, even when the powder is packed at a high speed. The bag material such as paper bag is not blocked, and the necessary and sufficient deaeration amount is maintained,
An object of the present invention is to provide a powder bag packing tube capable of sufficiently preventing the rupture of a packaging bag due to a reduction in degassing efficiency and the outflow of powder due to a gas such as air.

[0006]

In order to achieve the above object, a first aspect of the present invention is a powder bag packing tube for packing powder in a packing bag, which comprises a bag packing tube body, The packaging bag has a filling port for filling the powder inside the packaging bag, and passes through the tip filling portion inserted into the packaging bag and the inside of the bag packing tube main body to package the powder. A degassing port for degassing the air mixed in at the same time when it is packed in the packaging bag is opened in the wall surface of the tip filling portion near the filling port inserted into the packaging bag, and degassing is performed from the degassing port. The other opening for exhausting the stored air to the outside of the packaging bag is a hollow deaeration pipe provided in a portion of the bag filling tube body that is not inserted into the packaging bag, and the deaeration port of the tip filling portion. At least one convex portion that is provided in the vicinity of the periphery of the There is provided a powder bagging tube, characterized by.

Here, it is preferable that the at least one convex portion is rounded at its front end, rear end, or both ends. Further, the at least one convex portion is disposed on both sides of the degassing port in the width direction of the bagging tube body and on the tip side of the degassing port, and extends in the longitudinal direction of the bagging tube body. Preferably there are three isolation walls. A suction device is preferably connected to the other opening of the hollow degassing pipe.

In order to achieve the above object, a second aspect of the present invention is a powder bag packing tube for packing powder into a packing bag, which comprises a bag packing tube main body and the packing bag. When the packing bag is filled with the powder by passing through the inside of the bag filling tube main body and the tip filling section which has a filling port for filling the powder inside. A degassing port for degassing the air mixed in at the same time is opened in the wall surface of the tip filling portion near the filling port inserted into the packaging bag, and the air degassed from the degassing port A hollow degassing pipe provided at a portion of the bag filling tube body where the other opening for exhausting to the outside of the packaging bag is not inserted inside the packaging bag,
A strip-shaped separator plate attached to the wall surface so as to cover the deaeration port with a predetermined space between the deaeration port and the wall surface of the tip filling portion. The present invention provides a powder-filled tube characterized by the above. Both ends of the separating plate are not in contact with the wall surface of the tip filling portion, and are open.

Here, it is preferable that a predetermined fixed region is closed from a tip portion of a space formed between the tip filling portion and the separator. A suction device is preferably connected to the other opening of the hollow degassing pipe.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The powder bag tube according to the present invention will be described in detail below based on the preferred embodiments shown in the accompanying drawings.

The powder bag packing tube of the present invention is used as a powder blowing nozzle of a powder bag packing apparatus, and is inserted into a packing bag and has a filling port for filling powder such as wheat flour. An isolation wall such as a protrusion or a cover or a separation plate is provided near the deaeration port on the side surface. The powder targeted by the present invention means a powder in a narrow sense such as flour such as wheat flour or powder such as industrial materials or chemicals, or a granular material including granular powder such as grains or industrial materials or chemicals. It is a powder in a broad sense. Hereinafter, wheat flour will be described as a typical example of powder in a broad sense.

FIG. 1 is a schematic view of an embodiment of a powder bagging apparatus using the powder bagging tube of the first aspect of the present invention as a powder injection nozzle. A powder bag packing device 10 shown in FIG. 1 is a device for filling a predetermined amount of powder such as wheat flour into a packaging bag, and a powder and granular material storage unit 11 for stocking and sequentially supplying the wheat flour is arranged above the packing bag. At the bottom of the
A transfer bag packing unit 12 is provided for transferring a fixed amount of powder supplied from the container into a packaging bag. The powder and granular material storage unit 11 and the transfer bagging unit 12 are connected to each other by a connecting unit 13 and are placed on the legs 14.

A hopper 20 for stocking powder such as wheat flour is provided at the uppermost part of the granular material storage unit 11, and wheat flour or the like supplied from the hopper 20 is agitated below the hopper 20. A stirring shaft 22 having a plurality of stirring blades 21 for preventing the generation of bridges is arranged. Below the stirring shaft 22, wheat flour or the like is transferred into the bagging unit 12
Is provided with a screw conveyor 23.
The stirring shaft 22 and the screw conveyor 23 are V
They are connected to each other by a transmission means 24 such as a belt, and are rotationally driven via a transmission means 26 by a drive motor 25 provided at the lower end of the leg portion 14.

The flour etc. stocked in the hopper 20 is
It is agitated by the agitating blade 21 attached to the agitating shaft 22,
It is supplied to the transfer bagging unit 12 via the connecting unit 13 as the screw conveyor 23 rotates.

On the other hand, the transfer bagging section 12 has a powder storing section 1
Screw feeder 3 for transferring the powder supplied from 1
0 is provided. With the rotation of the screw feeder 30, the powder such as wheat flour is transferred toward the powder bag packing tube 40 of the first aspect of the present invention, and is pushed out from the filling port 41, and the powder is discharged onto the weighing device 32. Packaging bag 3 placed on
3 is filled with a predetermined amount (for example, 25 kg) of powder such as wheat flour.

The screw feeder 30 rotates at a high speed to fill a large amount of wheat flour or the like into the packaging bag 33 in a short time, and at a low speed to rotate the screw feeder 30 while controlling the filling amount of the flour or the like. First, most of the wheat flour or the like to be packed in the packaging bag 33 is first filled in a large amount, and then the insufficient amount of wheat flour or the like is added in a small amount while the weight of the filled wheat flour or the like is measured by the measuring device 32. Accurately measure 25 kg of powder such as wheat flour in about 10 seconds with the packing bag 3
Fill 3

The screw feeder 30 is rotatably driven via a transmission means 35 by a variable speed motor 34 provided inside the leg portion 14 and having a controllable rotation speed, and the rotation speed is detected by a detection means 36, and the screw feeder 30 is detected. Three
0 is automatically controlled so as to rotate at a predetermined rotation speed.

FIG. 2 (a) is a top view showing the outline of an embodiment of the powder packing tube of the first aspect of the present invention used in the powder packing device 10 shown in FIG. (B) is the front view, (c) is a side view.

The powder bag packing tube 40 shown in these figures is attached to the powder bag packing device 10 and used to fill powder such as wheat flour into the packaging bag 33, that is, as a blowing nozzle at the time of packing. A bag filling tube main body 42 for transporting powder such as wheat flour conveyed by the screw feeder 30 of the powder bag packing apparatus 10 and a filling port 41 for filling the powder into the packaging bag 33. The tip end filling portion 44 that is held and inserted into the inside of the packaging bag 33, and passes through the inside of the powder packaging tube 40 to deaerate the air that is mixed in at the same time when the packaging bag 33 is filled with powder. And a hollow degassing pipe 46 for

Here, the bagging tube main body 42 has a flange 42
a, and the flange 42a allows the powder bagging device 1
It is connected to the outlet pipe portion of the screw feeder 30 by attaching it to a predetermined position of the body of No. 0 using a bolt, a screw or the like.

Further, one end of the degassing pipe 46 is provided with a filling port of the powder bag packing pipe 40 on the left side in the figure in order to degas air mixed in at the same time when the powder is packed in the packaging bag 33. 41 is connected to a degassing port 46a formed in the wall surface of the tip filling portion 44 near 41, and the other end of the degassing pipe 46 is the wall surface of the bag filling tube body 42 of the powder bag filling tube 40 on the right side in the figure Of the packaging bag 33, which is not inserted into the inside of the packaging bag 33, protrudes to the outside, and the deaeration port 46a
An exhaust port 46b for exhausting the air deaerated from the outside of the packaging bag 33 is formed.

Further, in the powder-filled tube 40 of this embodiment, the partition wall 48 formed of at least one protrusion projecting in the direction substantially perpendicular to the wall surface in the vicinity of the deaeration port 46a of the tip filling portion 44. Is provided. In the powder bag packing tube 40 of the illustrated example, the powder bag packing tube 40 of the deaeration port 46a of the tip end filling portion 44 is
2 on each side in the width direction (upper and lower positions of the degassing port in FIG. 2A), one isolation wall 48 and the tip filling portion 4
One isolation wall 48 on the tip side from the deaeration port 46a on the wall surface of No. 4
There are a total of 3 isolation walls. Although three isolation walls 48 are provided in the illustrated example, the present invention
The number is not limited to this, and any number may be provided as long as it is one or more.

It is preferable that these isolation walls 48 extend in the longitudinal direction of the powder-filled tube 40, and that their leading ends or rear ends or both ends are rounded so as not to interfere with the entrance and exit of the packaging bag 33. . Further, when the powder bag packing tube 40 is inserted into the opening of the packaging bag 33, the margin (margin) between the outer diameter of the powder bag packing tube 40 and the opening of the packaging bag 33 is small.
The isolation wall 48 has a shape in which the amount of projection from the wall surface is large on the side close to the degassing port 46a, and the amount of projection from the wall surface is small on the side far from the degassing port 46a, so that the packaging bag 33 is deaerated The packaging bag 3 for the powder packaging tube 40 that makes it difficult to contact the mouth 46a
It is preferable that it does not interfere with the insertion of 3 into the opening or the withdrawal from this opening.

This powder-filled tube 40 has the tip end side (the left end side in the figure) of the tip filling portion 44 of the powder-filled tube 40 as the head.
The packaging bag 33 is inserted into the opening (valve opening). In this case, not only the tip filling portion 44 but also a part of the bag filling tube main body 42 is inserted into the inside of the packaging bag, but the exhaust port 46b which is the other end of the degassing pipe 46 is provided outside the packaging bag 33. The powder bag tube 40 is inserted into the packaging bag 33 so as to come out.

The exhaust port 46b of the degassing pipe 46 is preferably connected to a suction device 47 (see FIG. 1) such as an ejector, a blower or a vacuum pump. By doing this,
When the powder is packed in the packaging bag 33 using the powder bag packing tube 40, the air mixed in the packaging bag 33 is simultaneously degassed 46.
The gas is forcibly degassed from a and the exhaust port 46b is passed through the degassing pipe 46.
Can be forcibly discharged to the outside of the packaging bag 33.

In the powder bag packing apparatus 10 of the illustrated example, when the powder bag is packed, as described above, the screw feeder 3 is used.
The powder transferred by No. 0 is filled into the packaging bag 33 from the filling port 41 through the inside of the powder packaging tube 40, and at the same time, the air mixed in the packaging bag 33 at the same time as the powder is removed. ,
By a suction device 47 such as an ejector connected to the exhaust port 46b at the other end of the degassing pipe 46, from the degassing port 46a through the degassing pipe 46 to the outside of the packaging bag 33 with a predetermined suction air volume. Is discharged.

In this way, by providing the isolation wall 48 around the deaeration port 46a, the opening (valve opening) of the packaging bag 33 is configured by suction due to deaeration and the weight of the packaging bag 33 during bag packing. In the illustrated example, the bag material itself such as the bag to be filled does not block the deaeration port 46a. In the illustrated example, the deaeration port 46a is always degassed through the gap between the three isolation walls 48 with a predetermined suction air volume. can do. Therefore, it is possible to prevent the occurrence of problems that the packaging bag 33 is ruptured by the air mixed in the packaging bag 33 at the time of bag filling and that the powder flows out of the packaging bag 33 together with the air.

As described above, in the first aspect of the present invention, the wall is not limited to the isolation wall 48 in the illustrated example, but is provided on the wall surface around the deaeration port 46a of the tip filling portion 44 with respect to this wall surface. At least one protrusion protruding substantially in the vertical direction, preferably three or more protrusions, more preferably at least one protrusion having a rounded front and / or rear end, and further preferably three or more protrusions. By providing the portion, the same effect as that of the isolation wall 48 in the illustrated example can be obtained.

Next, an embodiment of the powder bag tube according to the second aspect of the present invention will be described. FIG. 3 (a) is a top view schematically showing an embodiment of the powder bag tube of the second aspect of the present invention.
FIG. 3B is a front view thereof, and FIG. 3C is a sectional view of a tip filling portion of the powder bag tube. 3 (a) and 3 (b)
The powder-filled tube 50 shown in FIG. 2 has a tip-filling portion 54 that is inserted into the packaging bag 33, as compared with the powder-filled tube 40 shown in FIGS. 2A and 2B. Tip filling part 4 of tube 40
Since it is the same except for the points different from 4, the same components are designated by the same reference numerals, and detailed description thereof will be omitted.

In this powder bag tube 50, as shown in FIG.
As shown in (c), the tip filling portion 54 of the powder bag tube 50.
A space (gap) is formed between the deaeration port 56 and the wall surface of the tip filling portion 54, and a rectangular (strip-shaped) separator plate 58 is provided so as to cover the deaeration port 56 from above. Is attached. The degassing port 56 is connected to one end of the degassing pipe 46.

The separator 58 is provided with a degassing port 5 at the center thereof.
A predetermined gap is provided above 6 and both side ends thereof are not contacted with the wall surface of the tip filling portion 54 and are opened. Further, the tip end side and the rear end side of the separating plate 58 are attached to the wall surface of the tip end filling portion 54 so as to be smoothly connected to the wall surface of the tip end filling portion 54. In particular, it is preferable that the tip portion of the separator plate 58 has an elliptic arc shape like the shape of the wall surface on the tip side of the tip filling portion 54. In this way, the powder bag 50 is packed into the packaging bag 33.
When the powder is inserted into the opening of the packaging bag, the packaging bag 33
Does not come into contact with the deaeration port 56 of the tip filling portion 54, so that it does not interfere with the insertion of the powder bag 50 into the opening of the packaging bag 33 or the withdrawal from the opening. The shape of the separating plate 58 may be any shape as long as it can cover the upper side of the degassing port 56 with a predetermined space (space) from the wall surface of the tip filling portion 54.

At the time of bag filling, the tip filling portion 54 and the separator 5
8 so that the space between the tip end filling part 5 of the tip end filling part 54 of the powder bag 50 and the tip filling part 5 is prevented.
It is preferable that a predetermined fixed region from the tip end side of 4 is closed. Further, in the space formed between the wall surface of the tip filling portion 54 and the separator plate 58, it is preferable that a predetermined certain area from the tip end side of the tip filling portion 54 be closed.

In the closed region 56b of this embodiment shown in FIGS. 3 (a), 3 (b) and 3 (c), the tip side of the tip filling portion 54 of the powder bag 50 is V-shaped. As a result, a predetermined fixed area is three-dimensionally closed. The closed area 5 of the deaeration port 56
6a and the closed region 56b between the wall surface of the tip filling portion 54 and the separating plate 58 are not particularly limited, and their shapes and proportions are determined in consideration of the degassing amount of the mixed air and the suction amount of the powder. It may be selected appropriately.

In the powder packing tube 50, the air mixed in the packaging bag 33 at the same time as the powder is packed when the powder is packed.
From the space between the separating plate 58 and the wall surface of the tip filling portion 54,
Similar to the case of the powder-filled tube 40 shown in FIG.
6b is discharged to the outside of the packaging bag 33. As in the case of the powder bag 40 shown in FIG.
When b is connected to the suction device 47 (see FIG. 1)
In addition, it is possible to forcibly and efficiently remove the air mixed in the packaging bag 33 at the same time as the powder when the powder is packed.

By thus providing the separator 58 so as to cover the periphery of the deaeration port 56, a bag material such as a paper bag of the packaging bag 33 due to suction due to deaeration and the own weight of the packaging bag 33 during bag filling. Does not block the deaeration port 56, and in the case of the present embodiment, a predetermined suction air volume is always supplied from the space between the separator plate 58 and the wall surface of the tip filling portion 54 via the deaeration port 56. Can be degassed with. Therefore, it is possible to prevent the occurrence of the trouble that the packaging bag 33 is ruptured by the air mixed during the bag filling and the powder flows out of the packaging bag 33 together with the air.

The powder bag tube of the present invention has been described above with reference to various embodiments.
The present invention is not limited to the above embodiments as long as it has a separator, and it goes without saying that various improvements and design changes may be made without departing from the spirit of the present invention.

[0037]

As described in detail above, according to the powder bag packing tube of the present invention, the bag material such as the paper bag of the packing bag blocks the deaeration port by providing the partition wall / separator. Since the air mixed in the packaging bag can be degassed from the degassing port to the outside of the packaging bag with a predetermined suction air volume during packaging, the packaging bag may burst during powder packaging. Further, it is possible to prevent the powder from being blown out together with the air, to efficiently pack the powder into the packaging bag, and to further shorten the powder bag packing time as compared with the conventional case.

[Brief description of drawings]

FIG. 1 is a schematic front view of an embodiment of a powder bagging apparatus using a powder bagging tube of the present invention.

FIG. 2 (a) is a top view showing the outline of an embodiment of a powder bag tube of the present invention, (b) is a front view of (a), and (c) is ( It is a side view of a).

FIG. 3A is a top view schematically showing another embodiment of the powder bag tube of the present invention, FIG. 3B is a front view of FIG. 3A, and FIG. It is sectional drawing of the tip filling part of a).

[Explanation of symbols]

10 Powder bagging device 11 Powder storage 12 Transfer bagging section 13 Connection 14 legs 20 hoppers 21 stirring blade 22 stirring shaft 23 Screw conveyor 24,26 Conducting means 25 drive motor 30 screw feeder 32 weighing device 33 packaging bags 34 Variable speed motor 35 Conducting means 36 Detection means 40,50 powder bag tube 41 Filling port 42 Main body of packed tube 42a flange 44, 54 Tip filling section 46 Deaeration tube 46a, 56 Degassing port 46b exhaust port 47 Suction device 48 isolation wall 56a, 56b closed area 58 separator

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Claims (7)

[Claims] 1. A powder bag packing tube for packing powder into a packaging bag, the packing bag body having a bag packing tube main body and a filling port for filling powder inside the packing bag. And a deaeration port for deaerating the air that passes through the inside of the bag filling tube body and the air that is mixed in at the same time when the powder is filled in the packaging bag. The other end, which is opened in the wall surface of the tip filling portion near the filling port inserted into the bag and discharges the air deaerated from the deaeration port to the outside of the packaging bag, is the bag filling tube. A hollow deaeration tube provided in a portion of the main body that is not inserted into the packaging bag, and a distal filling portion provided in the vicinity of the periphery of the deaeration port and projecting in a direction substantially perpendicular to the wall surface. A powder-filled tube having one convex portion. 2. The powder-filled tube according to claim 1, wherein the at least one protrusion has a rounded front end, rear end, or both ends. 3. The at least one convex portion is arranged on both sides of the degassing port in the width direction of the bagging tube body and on the tip side of the degassing port, and is arranged in the longitudinal direction of the bagging tube body. The powder-filled tube according to claim 1 or 2, wherein the powder-filled tube is provided with three extending partition walls. 4. The powder-filled tube according to claim 1, wherein a suction device is connected to the other opening of the hollow degassing tube. 5. A powder bag packing tube for packing powder into a packaging bag, the packing bag body having a bag packing tube body and a filling port for filling powder inside the packing bag. And a deaeration port for deaerating the air that passes through the inside of the bag filling tube body and the air that is mixed in at the same time when the powder is filled in the packaging bag. The other end, which is opened in the wall surface of the tip filling portion near the filling port inserted into the bag and discharges the air deaerated from the deaeration port to the outside of the packaging bag, is the bag filling tube. A hollow space is provided in a portion of the main body that is not inserted into the packaging bag, and a space is provided between the wall surface of the tip filling portion in which the degassing port is opened, and the degassing is performed. And a separator attached to the wall so as to cover the upper part of the mouth. 6. The powder-filled bag according to claim 4, wherein a predetermined constant region is closed from a tip portion of a space formed between the tip filling portion and the separator. tube. 7. The powder-filled pipe according to claim 5, wherein a suction device is connected to the other opening of the hollow degassing pipe.