JPH0769324A - Packing bag supplier and automatic weighing and packing apparatus using the same - Google Patents

Abstract

PURPOSE:To provide a packing bag supplier with a structure of a packing bag holding means devised so that packing bags formed into single bags can be securely picked up one by one and an automatic weighing apparatus with high availability using the supplier. CONSTITUTION:An automatic weighing apparatus with high availability comprises a packing bag supplier wherein the packing bag supplier is based on a common packing bag holding means 9 with respect to sucking operation for picking up a packing bag 11 from a mount and holding operation for carrying the packing bag 11 to a supply port 93 for an object to be packed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag feeding device for moving a packaging bag formed into a single bag one by one to a feeding port of an article to be packaged, and a fixed amount using the packaging bag feeding device. The present invention relates to a packaging device that automatically fills a packaging bag with the article to be packaged, and particularly to an automatic weighing and packaging device that is suitable for automatically filling powdery particles such as grains.

[0002]

2. Description of the Related Art Conventionally, bagging of powdered grains such as grains has been
Automatic weighing and packaging devices of various structures are used. Among these, an automatic weighing and packaging apparatus using a single packaging bag can be mentioned as one that can use a wide variety of packaging bags from small to large. The automatic weighing and packaging device for this single bag picks up the packaging bags stacked in a bundle one by one with an appropriate suction means, and while picking them with the packaging bag holding pieces such as nails, supplies the opening to the objects to be packaged. It is common to convey the object to be packed into the packaging bag by transporting it to the mouth. Such a conventional automatic weighing and packaging apparatus will be described with reference to FIG. 6, particularly focusing on the structure of the supply portion of the packaging bag.

FIG. 6 shows a schematic structure of a packaging bag supply section in a conventional automatic weighing and packaging apparatus.
(B) is a plan view respectively. In the illustrated example, one end is connected with the rotary bar 200 and the rotary bar 2
A pair of rotating arms 2 which are rotatable with the rotation of 00.
02, 202 and the rotating arms 202, 202 are connected to a fluid cylinder 204 which can be retracted, and the upper, middle,
Packaging bag suction means 20 that can be stopped at the lower three positions
6 are provided respectively. Then, the packaging bag sandwiching upper pieces 208, 208 provided at the front end portions of the rotating arms 202, 202, and the rotating arms 202, 2
The fluid cylinders 210, 210 attached to the container 02 are rotated together with the fluid cylinders 210, 210 so that the packaging bag holding upper pieces 208, 20 rotate.
The packaging bag sandwiching means 214, 214 are constituted by the packaging bag sandwiching lower pieces 212, 212 which can be bite. In such a packaging bag supply unit, first, the packaging bag suction means 206 descends to the lower position to suck the packaging bag,
Then, the fluid cylinder 2 is moved up to the middle position at the same time.
By the operation of 10, 210, the packaging bag holding lower pieces 212, 21
2 engages with the packaging bag clamping upper pieces 208, 208 to clamp the packaging bag, and after the packaging bag suction means 206 moves up to the upper position, the rotating bar 200 rotates to rotate the rotating arms 202, 202. It moves to convey the packaging bag to the object to be packaged supply port.

A packaging bag 216 when the packaging bag is clamped
The positional relationship between the packaging bag suction means 206 and the packaging bag sandwiching means 214 is shown in FIG. 7B, and the packaging bag sandwiching means 214 is located inside the H-shaped packaging bag suction means 206. ing. Also, this packaging bag suction means 206
Is an H-shaped frame to which five suction tools 218 ... Are attached, and by sliding on the H-shaped frame, it is possible to accommodate packaging bags 216 of various sizes.

[0005]

However, in the conventional automatic weighing and packaging apparatus, the packaging bag supply section having the above-mentioned structure causes various problems. First, there is a problem in that the packaging bag 216 cannot be reliably conveyed to the article supply port. This is because the distance between the packaging bag holding means 214 and the end of the packaging bag 216 is large as shown in FIG. The packaging bag 216 cannot be handed to the user accurately.

Next, there is a problem that a plurality of packaging bags 216 are sucked at the same time. This is a packaging bag 2
When 16 ends are curled, the suction tool 218 ...
Is located near the opening of the packaging bag 216, the two overlapping packaging bags are sucked together.

Considering mainly the two problems as described above, in order to suck and convey the packaging bag 216, it is necessary to suck and hold the packaging bag 216 at a position that is not near or far from the opening at the end of the bag body. However, the packaging bag supply section in the conventional automatic weighing and packaging apparatus cannot suck and pinch the optimum position, and thus the above-mentioned problems leading to a reduction in the operation rate of the apparatus are the drawbacks of the apparatus.

[0008]

SUMMARY OF THE INVENTION The present invention has been made for the purpose of solving the above-mentioned problems, and it is possible to surely pick up a single packaging bag formed into a single bag. (EN) Provided are a packaging bag supply device in which the structure of bag sandwiching means is devised, and an automatic weighing and packaging device using the same which has a high device operation rate. First of all, as the packaging bag supply device of the present invention, a packaging bag supply device for picking up the packaging bag placed at a predetermined position on the mounting table and moving the opening of the packaging bag to the article supply port. Is a packaging bag placing table for placing a plurality of packaging bags, which are previously made into single bags, in a stacked state at a predetermined position, and is located above the placing table, and has one end connected by a rotary bar to a predetermined position. A pair of rotating arms, which are arranged at opposite positions with a space therebetween and are rotatable with the rotation of the rotating bar, and a vertical movement along the rotating arm bridging between the pair of rotating arms. A possible horizontal arm, a horizontal arm moving means for changing a distance between the rotary bar and the horizontal bar connected between the horizontal bar and the horizontal arm, and a horizontal arm which is opposed to the horizontal arm along the horizontal arm. It was erected so that it could move to the left and right, and was placed under the previous statement below A substantially flat packaging bag suction means provided with a suction port in the surface so as not to face the packaging bag, and a flat plate member fixed to a rotatable shaft at a suitable position near the packaging bag suction means. A pair of packaging bag holding means provided with a packaging bag holding piece in a positional relationship of being in a pressure contact state with the packaging bag suction means by the rotation of the shaft and in a released state to the outer side in the width direction of the placed packaging bag,
It is provided with an auxiliary suction means having a suction surface having substantially the same height as the suction surface of the packaging bag suction means, between the pair of packaging bag holding means, or on the mounting table. And a pair of columnar members are provided upright at the opposite positions with the packaging bag sandwiched between them in the widthwise outermost position of the placed packaging bag, and the plate-shaped member extends from the upper ends of the pair of columnar members to the widthwise inner side of the packaging bag. It is more preferable to provide a packaging bag separating means in which a fluid discharge port is provided on the packaging bag side of the columnar member immediately below the plate-shaped member.

As the automatic weighing and packaging device, a quantitative weighing device for a packaged object, which is provided above the main body and has a dispensing port for the packaged item below, and a packaged product provided below the dispensing port of the quantitative weighing device. An object supply port, a packaging bag opening and closing means provided directly below the object to be packaged for adsorbing and opening both sides of the opening of the packaging bag, and an opening part of the packaging bag provided directly below the packaging bag opening and closing means. An object-to-be-packaged filling device provided with a packaging bag sealing means for sealing, and a pair of packaging bag holding means provided on the lower back of the object to be packaged filling device by the rotation of the rotary bar. And the packaging bag supply device which is positioned so as to be reciprocally rotatable between the packaging material supply port and the packaging material supply port, and is provided below the packaging object filling device, and is provided in a space below the packaging object filling device. Can be stopped at any position in the vertical direction And a packaging bag supporting device having a lifting lifter configured as described above, the packaged material supply port is provided separately from the dispensing port of the quantitative weighing device, and the lower opening area is smaller than the upper opening area. With the set cylindrical body, especially with respect to the passing amount of the packaged object per unit time at the dispensing port of the quantitative weighing device, the falling speed when the packaged object freely falls in the cylindrical body and reaches the lower opening and It is more preferable to set the lower opening area and length of the tubular body so that the amount of the packaged object per unit time that can pass through the lower opening determined by the lower opening area is large.

[0010]

The packaging bag supply device of the present invention solves the above problems by the following actions. First, a pair of packaging bag sandwiching means is lowered onto a plurality of packaging bags which are previously formed as single bags and stacked at a predetermined position on the packaging bag mounting table, and are brought into pressure contact with the packaging bag suction means. The packaging bag suction means is provided in each of the pair of packaging bag sandwiching means, and the packaging bag sandwiching means is erected on the lateral arm so as to be movable left and right, so that the facing interval is changed according to the width of the packaging bag. Can be made. Therefore, the pair of packaging bag suction means can be lowered and brought into pressure contact with the optimum position in the width direction of the packaging body. Further, also with respect to the position of the packaging bag in the vertical direction, the packaging bag suction means can be positioned at an optimum position by appropriately setting the position of the lateral arm with respect to the packaging bag at a predetermined position. The lowering of the lateral arm is performed by the lateral arm moving means provided between the lateral arm and the rotary bar.

Then, at the same time as the pressure contact, the packaging bag suction means works to suck the packaging bag. Simultaneously with this suction, the lateral arm moving means works again, and this time the lateral arm moves up to pick up one packaging bag while sucking it. In this state, only one packaging bag is sucked by the packaging bag suction means. Next, the plate-shaped packaging bag clamping piece is pressed against the packaging bag suction means to clamp one packaging bag. Since the packaging bag holding piece is fixed to the shaft provided in the vicinity of the packaging bag suction means, the pressed state can be obtained by rotating the shaft. Since this lateral arm is bridged by two rotating arms connected by a rotating bar, the packaging bag suction means rotates together with the lateral arm while holding the packaging bag by rotating the rotating bar. Then, the packaging bag is conveyed to the package supply port.

As described above, the packaging bag supply device of the present invention has a common packaging bag that performs the suction operation for picking up the packaging bag from the mounting table and the sandwiching operation when the packaging bag is conveyed to the article supply port. The characteristic action is that it is carried out by the holding means, and it holds the optimum position that is not near or far from the opening of the packaging bag.

Since the auxiliary suction means of claim 2 is provided at substantially the same height as the packaging bag suction means, it acts so as to supplement the suction force when suctioning and picking up the packaging bag. Further, since the packaging bag separating means of claim 3 causes the packaging bag to be caught at an appropriate position in the vertical direction when sucking and picking up the packaging bag, and further discharges air or the like.
It works so as to separate the packaging bags sucked in two layers one by one.

Subsequently, in the automatic weighing and packaging apparatus, the opening of the packaging bag is positioned at a predetermined position of the object-to-be-packaged filling apparatus by the above-mentioned packaging bag feeding apparatus, and the package is supplied from the dispensing port of the quantitative weighing apparatus provided above the apparatus. The packaging bag is filled by discharging a packaged object such as a grain through the package supply port. This packaged object filling device comprises a packaged material supply port, a packaging bag opening / closing means, and a packaging bag sealing means, opens the opening of the supplied packaging bag, and seals the opening while filling the packaged object. It has a function. The packaged material supply port is provided separately from the dispensing port of the quantitative weighing device, and the lower opening area is set to be smaller than the upper opening area. With respect to the passing amount, the passable amount per unit time of the packaged object in the lower opening determined by the falling speed and the lower opening area when the packaged object freely falls in the cylinder and reaches the lower opening, If the opening area and length of the lower part of the cylinder are set to be large, the passing speed can be gained by free fall of the packaged object, and a large discharge amount per unit time can be achieved despite a small opening diameter. .

[0015]

The details of the above-mentioned packaging bag supply device and the automatic weighing and packaging device using the same will be described below together with specific examples. First, FIG. 1 is a perspective view showing the entire structure of the packaging bag supply device of the present invention. In the illustrated example, the packaging bag placing table 1 and the pair of rotating arms 3 and 3 are provided.
A lateral arm 5 bridging between the pair of rotating arms 3 and 3, a lateral arm moving means 7 composed of a fluid cylinder,
A pair of packaging bag holding means 9, 9 is provided on the lateral arm 5 so as to be opposed to each other and erected horizontally along the lateral arm 5.

In the above construction, the packaging bag placing table 1 is for placing a plurality of packaging bags 11 which are previously made into single bags in a stacked state at a predetermined position, and the front position of the packaging bag 11 in the front-rear direction is It is regulated by the stopper member 13, and the backward position and the left-right position are the respective guide members 15, 1.
It is regulated by 7 and 19. The respective guide members 15, 17, 19 are slidable along the guide grooves 21 provided in the packaging bag mounting table 1, and are fixed by tightening the fixing screws 23. . Further, on both sides of the placed packaging bag 11, a pair of packaging bag separating means 25, 25 for separating the two stacked packaging bags 11 at the time of suction is provided. The structure and operation of the packaging bag separating means 25, 25 will be described later.

Regarding the pair of rotating arms 3 and 3,
One end of the rotary bar 27 is connected to the rotary bar 27 at a predetermined interval so that the rotary bar 2 is opposed to the rotary bar 2.
With the rotation of 7 in the arrow direction, it is rotatable in the arrow direction. The rotating bar 27 is connected to a rotating means 31 that moves up and down via a crank member 29, and the rotating means 3
By descending 1, it is possible to obtain a rotational movement in the direction of the arrow.

The lateral arm 5 is formed by bridging between the pair of rotating arms 3, 3.
It is attached to the bar members 33, 33 constituting the unit 3 so as to be vertically movable along the rotating arms 3, 3 via bearing members 35, 35 having bearings. As is clear from the figure, a fluid cylinder 7 serving as a lateral arm moving means is connected between the rotary bar 27 and the lateral arm 5 so that the distance between the rotary bar 27 and the rotary bar 27 can be changed by retracting the piston rod 37. ing.

As shown in the drawing, the subsequent packaging bag holding means 9 and 9 are provided on the lateral arm 5 in a state of facing each other, and the packaging bag 11 placed on the lower part thereof The substantially flat packaging bag suction means 39, 39 provided with suction ports in the plane so as to face each other, and the packaging bag suction means 39, 39
A plate-like member fixed to the rotatable shafts 41, 41 is provided at a suitable place in the vicinity thereof, and is rotated in the arrow direction by the rotation of the shafts 41, 41, whereby the packaging bag suction means 3
The packaging bag holding pieces 43, 43 are provided so as to selectively take two positions, that is, the pressed state with 9, 9 and the released state of the placed packaging bag 11 to the outside in the width direction. The packaging bag suction means 39, 39 can also be configured by a plurality of pieces separately provided with a member having a suction port and a member with which the packaging bag holding pieces 43, 43 are in pressure contact. The two packaging bag sandwiching means 9 and 9 facing each other are movable left and right along the lateral arm 5, and the interval between the packaging bag sandwiching means 9 and 9 is adjusted according to the width of the packaging bag 11. Fixing screw 45,
By tightening 45, the lateral arm 5 is fixed at a predetermined position. Further, the shafts 41, 41 to which the packaging bag holding pieces 43, 43 are fixed are pinion gears 47, 47.
Rack gears 51, 51 connected to the piston rods of fluid cylinders 49, 49 are meshed with the pinion gears 47, 47. When the fluid cylinders 49, 49 are operated, the rack gear 5
1, 51 move up and down, which causes pinion gears 47, 4
7, the packaging bag holding pieces 43, 43 also rotate. Therefore, the pressure contact force of the packaging bag holding pieces 43, 43 against the packaging bag suction means 39, 39 is the fluid cylinder 4
It depends on the fluid pressures of 9, 49, the diameters of the pinion gears 47, 47, and the shapes of the packaging bag holding pieces 43, 43.

On the other hand, suction pipes 53, 53 are connected to the suction ports provided in the surfaces of the packaging bag suction means 39, 39, and the packaging bag 11 is suction-held by being sucked by a vacuum suction pump such as a dry pump. To do. Since this suction force is determined by the exhaust capacity of the vacuum suction pump and the diameters of the pipes 53, 53, it may be appropriately determined by the size and weight of the packaging bag 11 used. If a sufficient suction force is not obtained when sucking and holding the packaging bag 11, a suction surface having substantially the same height as the packaging bag suction means 39, 39 is provided at an appropriate position in the middle of the packaging bag holding means 9, 9. It is also effective to provide the auxiliary suction means 55 having. Similar to the packaging bag suction means 39, 39, the auxiliary suction means 55 may be a substantially flat plate-shaped member having a suction port provided in the surface thereof, a suction pipe 57 may be provided, and suction may be performed by a vacuum suction pump or the like.

Next, the main operation of the packaging bag supply device of the present invention will be described with reference to FIG. First, as shown in (a), the piston rod 37 of the fluid cylinder 7 projects so that the lateral arm 5 descends. As the horizontal arm 5 descends, the suction surfaces of the packaging bag suction means 39, 39 are changed to the packaging bag 1.
It is pressed against the surface of No. 1 and sucks the packaging bag 11 by suction from the suction port provided in the suction surface. In this example, as shown in the figure, the auxiliary suction means 55 is used. Next, as shown as (b), the fluid cylinder 4
When the piston rods 59 and 59 of 9 and 49 are raised, the fluid cylinders 49 and 49 are operated at the same time and the rack gear 5
1, 51 are lowered, whereby the shafts 41, 41 connected to the pinion gear are rotated and the packaging bag holding pieces 43, 4
3 is pressed against the packaging bag suction means 39, 39. As a result, one packaging bag 11 is picked up by the pair of packaging bag holding means 9, 9. And
By lowering the rotating means 31, the crank member 29
The rotating bar 27 rotates via the rotating bar 27, whereby the pair of rotating arms 3 and 3 rotate and the opening of the packaging bag 11 picked up by the packaging bag holding means 9 and 9 is conveyed to a predetermined position. It will be.

Since the packaging bags 11 are picked up one by one from the one bundled on the packaging bag placing table 1, two sheets may be piled up. However, as shown in FIG. By 25, they can be separated one by one. As shown in FIG. 1, the example shown in the figure is installed upright on both sides of the packaging bag 11, and the plate-shaped member 63 is placed from the upper end of the hollow columnar member 61 toward the inside in the width direction of the packaging bag 11. A fluid discharge port 65 is provided on the side of the packaging bag 11 directly below the plate-shaped member 63. The packaging bag separating means 25 as described above is stacked by hooking the upper surfaces of the packaging bags 11 and 11 that are stacked by the plate-shaped member 63 and discharging air or the like from the fluid discharge port 65 at the same time. The packaging bags 11, 11 can be separated one by one. Further, when air charged to a potential opposite to the charging potential of the packaging bags 11, 11 is discharged from the fluid discharge port 65, the two packaging bags 11, 11 can be separated more reliably. A charger, which is generally called an ionizer, can be used to generate the charged air.

Further, in order to more reliably pick up the packaging bag 11, it is more effective to provide second packaging bag suction means 67, 67 as shown in FIG. This drawing shows a structural view of the pair of packaging bag holding means 9 and 9 as viewed from the lower side, and the above-mentioned packaging bag suction means 39 and 39.
Second packaging bag suction means 67, 67 are provided on the side opposite to the above. As a result, a strong suction force can be obtained together with the above-mentioned auxiliary suction means 55. Further, when the packaging bag holding means 9, 9 on both sides are connected by the two wires 71, 71 via the guide pulleys 69, as shown in the drawing,
By moving one of the packaging bag holding means 9, the other follows and moves, which is convenient when adjusting the distance between the packaging bag holding means 9 and 9 with respect to the width of the packaging bag 11.
Incidentally, reference numerals 47, 49 and 51 in the figure respectively represent the above-mentioned pinion gear, fluid cylinder and rack gear.

As described above, the packaging bag feeding device of the present invention has many features as compared with the conventional device, and an excellent automatic packaging weighing device can be constructed by using this. Then, FIG. 5 shows a schematic structural diagram of an automatic package weighing device using such a packaging bag supply device. In the illustrated example, the article supply means 7 is packaged downward from above the apparatus.
3, the quantitative measuring device 75, the object filling device 77, the packaging bag supplying device 79, and the packaging bag supporting device 81 are arranged in this order.

In the above construction, the article supply means 7
3 has a suitable shutter 83, which is usually provided at the top of the device. This packaged object supply means 73
The quantitative measuring device 75 provided in the lower part of the device is provided with a discharge port 85 for the objects to be packaged therebelow, and the shutter 89 is opened and closed by a driving means such as a fluid cylinder 87
The object to be packaged is introduced into the payout opening 85. Further, a weight detecting means 91 such as a load cell is provided at the rear of the device,
The output from this is fed back to the packaged material supply means 73. With respect to the packed object filling device 77, a vertically movable packaged object supply port 93 provided below the dispensing port 85 of the quantitative weighing device 75, and the packaged object supply port 9
3, a packaging bag opening / closing means 95 for adsorbing and opening both sides of the opening of the packaging bag 11 to open and close, and further provided directly below the packaging bag opening / closing means 95, the opening of the packaging bag 11 is sealed by heat sealing. It comprises a packaging bag sealing means 97 using a line heater.

Here, the package supply port 93 is provided separately from the dispensing port 85 of the quantitative measuring device 75,
By setting the area of the lower opening 99 smaller than the area of the upper opening 101, it is possible to apply the packaging bag of various standards from small to large. And, in particular, with respect to the passing amount of the packaged object per unit time at the dispensing port of the quantitative weighing device, depending on the falling speed and the lower opening area when the packaged object freely falls in the cylinder and reaches the lower opening. The feature is that the lower opening area and length of the tubular body are set so that the amount of the packaged object per unit time that can be passed through the determined lower opening is large. That is, in the conventional automatic weighing and packaging apparatus, the object to be packaged is directly filled into the packaging bag 11 through the dispensing port 85, but if the packaging bag of various standards from small size to large size is targeted, the dispensing port 85 is inevitable. Since it is necessary to reduce the diameter, it takes a long time to fill a large packaging bag. However, the above-mentioned packaged material supply port 93
Is used, the object to be packaged is accelerated by gravitational acceleration while the object to be packaged falls freely, and the lower opening 99 is moved to the upper opening 1
The vehicle will pass at a higher speed than when 01 is passed. On the other hand, since the passing amount of the packaged object per unit time is determined by the product of the passing speed and the cross-sectional area, by setting the cross-sectional area of the upper and lower openings and the length of the tubular body to the optimum values, the upper opening 1
Although the cross-sectional area is smaller than 01, it is possible to realize the same amount of passage per unit time in the lower opening 99 as in the upper opening 101. Therefore, it is possible to obtain a high filling speed even for a large packaging bag while targeting a small packaging bag. This is an important technique for achieving both versatility of the device and high filling speed.

As described above, the packaging bag feeding device 79 provided below and below the object-to-be-packaged filling device 77 is wrapped by the packaging bag holding means 9 attached to the rotating arm 3 on the mounting table 1. 11 is picked up one by one, and the opening is conveyed to the packing object filling device 77.

Finally, the packaging bag supporting device 81 provided below the packaging object filling device 77 supports the packaging bag 11 which is filled with the packaging object and becomes heavy. The lifting lifter 103 is capable of stopping at any position in the vertical direction in the space below the 77. The elevating lifter 103 may have a structure tilting in one direction so that the filled packaging bag can be tilted and discharged at the lower end position.

Next, detailed operations of such an automatic weighing and packaging apparatus will be described. First, the shutter 83 of the package supplying means 73 is opened to introduce the package into the quantitative measuring device 75, and the weight is detected by the weight detecting means 91 to reach the preset specified weight at the same time. By closing the shutter 83 of the package supply means 73, the weighing of a fixed weight of the packaged object is completed, and the quantitative weighing device 7 is temporarily operated.
A predetermined amount of items to be packaged is pooled in 5. Next, in the packaging bag supply device 79, the packaging bag clamping means 9, 9 clamps one packaging bag 11, and the opening 105 of the packaging bag 11 forms the packaging bag opening / closing means 95 by the rotational movement of the rotating arms 3, 3. It is transported to the facing position. At this time, as described above, the packaging bag clamping means 9, 9 clamps the optimum position which does not come near or far from the opening, so that various narrowed portions in the packing object filling device 77 can be easily carried out. In addition, it can be securely inserted, and the packaging bag 11 is not picked up by stacking two sheets. Although not shown in the drawing, it is necessary to clamp both sides of the packaging bag 11 in the width direction with respect to the packaging bag opening / closing means 95 by appropriate clamping means. When the packaging bag 11 is sandwiched, the packaging bag opening / closing means 95 adsorbs the packaging bag 11 and opens it, and the opening 105 of the packaging bag 11 opens to a predetermined size. When the packaging bag 11 is opened, the article supply port 93 is lowered and the packaging bag 11 is opened.
The shutter 89 is inserted by the driving means such as the fluid cylinder 87, and the article to be packaged is introduced into the dispensing port 85. At the same time, the items to be packed are introduced into the dispensing port 8
5 is sequentially filled into the packaging bag 11 through the article-to-be-wrapped supply port 93, but since the supply speed to the delivery port 85 is overwhelmingly high, the product is delivered to the article-to-be-packaged supply port 93 while being delivered into the delivery port 85. It will accumulate temporarily. Then, the material is supplied to the object-to-be-packaged supply 93 at a certain discharge speed. Further, as described above, the discharging speed from the packaged material supply port 93 to the packaging bag 11 is the discharge port 85.
Since it is almost the same as the discharge speed from the packaged material supply port 93 to the packaged material supply port 93, it is possible to obtain a high filling speed even with a large packaging bag while setting the cross-sectional area of the lower opening 99 of the packaged material supply port 93 to be small. .

In this way, as the packaging bag 11 is filled with the article to be packaged, the lifting lifter 103 rises to support the weight of the article to be packaged. Then, when a predetermined amount of the object to be packaged is filled, the lift lifter 103 descends to discharge the filled packaging bag. The rising timing of the lifting lifter 103 may be appropriately set between immediately after the start of filling and at the end of filling depending on the size of the packaging bag 11, the content of the packaged object, and the like.

Although the above examples have a structure and specifications particularly suitable for milled rice, they can be widely applied to grain solids such as wheat, coffee and soybean in addition to milled rice.
Further, in particular, in the present embodiment, a line heater is used as the packaging bag sealing means 97 to seal the synthetic resin packaging bag by heating and welding, but a paper bag or cloth bag may be sewn separately. Any material that can be used for both heat welding and sewing, and any other material that can seal the opening of the bag is not limited.

[0032]

As described above, according to the present invention, the following excellent effects can be obtained. First, in the packaging bag supply device, as described above, the suction of the packaging bag from the mounting table and the sandwiching during transportation to the packaged object filling device are the same member, that is, the packaging bag sandwiching piece and the packaging bag in the pressure contact state. Since it is performed by the suction means, it is possible to always hold an optimum distance from the end of the opening of the packaging bag, which is not near or far. Therefore, the opening end portion does not come to the front hanging state and can be surely inserted into the narrowed portion of the packaged object filling device. Further, since the packaging bag separating means having the fluid discharge port is provided immediately outside the width direction of the packaging bag on the mounting table, even if the packaging bags are stacked by static electricity etc. Can be separated. Furthermore, when air charged to a potential opposite to the charging potential of the packaging bag is discharged from the fluid discharge port, separation of the two packaging bags becomes more reliable. With these, a high device operating rate can be realized.

Next, since the above-mentioned packaging bag supply device is used in the automatic weighing and packaging device, suction of the packaging bag and occurrence of conveyance troubles can be eliminated, and a high equipment operation rate can be realized, which in turn contributes to cost reduction. Also becomes.
Further, by providing separately the below-mentioned outlet of the quantitative measuring device, the above-mentioned upper and lower opening areas and the cylindrical body supply opening for optimizing the length of the body to be packaged, a large lower opening area and a large filling area can be provided. Since it is possible to obtain a speed and has a high filling speed, it is possible to target a wide range of packaging bags, from small to large, so that the apparatus can be a highly versatile device. As described above, according to the packaging bag supply device and the automatic weighing and packaging device of the present invention, a high operation rate associated with a reliable operation and a high versatility due to a high filling speed are combined.

[Brief description of drawings]

FIG. 1 is an explanatory perspective view showing an embodiment of a packaging bag supply device of the present invention.

FIG. 2 is an explanatory view showing the operation of the packaging bag supply device of the present invention, (a) when the lateral arm is descending, and (b) when the lateral arm is ascending.

FIG. 3 is an explanatory view showing the structure of a packaging bag separating means in the packaging bag supply device of the present invention.

FIG. 4 is an explanatory view showing the structure of a packaging bag holding means in the packaging bag supply device of the present invention.

FIG. 5 is an explanatory view showing a structural example of the automatic weighing and packaging apparatus of the present invention.

FIG. 6 is an explanatory view showing an example of a conventional packaging bag supply device,
(A) is a front view of the main part of the device, and (b) is a plan view of the same.

[Explanation of symbols]

 1 Packaging Bag Placement Table 3 Rotating Arm 5 Horizontal Arm 7 Horizontal Arm Moving Means 9 Packaging Bag Holding Means 11 Packaging Bags 25 Packaging Bag Separation Means 27 Rotating Bar 39 Packaging Bag Sucking Means 41 Shaft 43 Packaging Bag Holding Pieces 55 Auxiliary Suction Means 61 Columnar member 63 Plate-like member 65 Fluid discharge port 75 Quantitative weighing device 77 Packaged object filling device 79 Packaging bag supply device 81 Packaging bag support device 85 Discharge port 93 Packaged object supply port 95 Packaging bag opening / closing means 97 Packaging bag sealing means 99 Lower opening 101 Upper opening 103 Lift lifter

Claims (6)

[Claims] 1. A packaging bag supply device for picking up a packaging bag placed at a predetermined position on a mounting table and moving an opening of the packaging bag to a package supply port, which is a single bag in advance. A packaging bag placing table for placing a plurality of packaging bags at a predetermined position in a stacked state, and an upper position of the placing table described above, which is arranged at an opposing position at a predetermined interval by connecting one end with a rotating bar. A pair of rotating arms that can rotate with the rotation of the rotating bar; a horizontal arm that bridges between the pair of rotating arms and can move up and down along the rotating arms; Horizontal arm moving means for changing a distance between the rotary bar and the horizontal arm connected between the bar and the horizontal arm; and a horizontal arm moving means installed on the horizontal arm so as to be opposed to each other and movable left and right along the horizontal arm, and downward. Does not face the packaging bag placed in the above description and sucks in the plane And a flat plate-like member fixed to a rotatable shaft at a proper position near the packing bag suction means, and press contact with the packing bag suction means by the rotation of the shaft. A packaging bag feeding device comprising: a pair of packaging bag sandwiching means, which is provided with a packaging bag sandwiching piece in a state in which the package bag is placed in an open state to the outside in the width direction of the placed packaging bag. 2. The packaging bag feeding device according to claim 1, wherein auxiliary suction means having a suction surface having substantially the same height as the suction surface of the packaging bag suction means is provided between the pair of packaging bag holding means. 3. A pair of columnar members are erected upright on the mounting table at the outermost position in the width direction of the placed packaging bag so as to sandwich the packaging bag, and the upper ends of the pair of columnar members are erected. To a widthwise inner side of the packaging bag, and a packaging bag separating means provided with a fluid discharge port on the packaging bag side of the columnar member immediately below the plate-shaped member. The packaging bag supply device according to 2. 4. A quantitative weighing device for a packaged object, which is provided above the main body and has a dispensing port for the packaged item below, and a packaged material supply port provided below the dispensing port of the quantitative weighing device, A packaging bag opening / closing means provided directly below the object to be packaged for adsorbing and opening both sides of the opening of the packaging bag, and a packaging bag closing means provided immediately below the packaging bag opening / closing means for sealing the opening of the packaging bag. And a packaged object filling device provided with, and a pair of packaging bag holding means provided on the lower rear side of the packaged object filling device, by the rotation of the rotary bar, the packaging bag placing table and the packaged object. The packaging bag supply device according to any one of claims 1 to 3, which is positioned so as to be capable of pivoting and reciprocating between a supply port, and a packaging bag filling device, which is provided below the packaging object filling device. Stop at any position in the vertical direction in the space below the device Automatic weighing and packaging system comprising and a packaging bag supporting apparatus having a lift lifter without the ability. 5. The automatic weighing and packaging apparatus according to claim 4, wherein the packaged material supply port is provided separately from the dispensing port of the quantitative weighing device, and the lower opening area is set to be smaller than the upper opening area. 6. The falling speed and the lower opening when the object to be packaged freely falls in the cylindrical body and reaches the lower opening with respect to the passing amount of the object to be packed per unit time at the dispensing port of the quantitative weighing device. The automatic weighing and packaging apparatus according to claim 5, wherein the lower opening area and the length of the cylindrical body are set so that the amount of the packaged object per unit time that can be passed through the lower opening determined by the area becomes large.