JPH11105802A - Apparatus for supplying bag for automatic grain bagger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for supplying bags for an automatic grain bagger, capable of supplying bags reliably and accurately to a grain-filling section. SOLUTION: First and second nozzles 90, 95 for ejecting air to a position in the vicinity of a bag 10 being supplied are provided just under a grain-filling section provided with a bag opening mechanism 4, a bag gripping mechanism, and a hopper for filling the bag with grains. The expansion and deformation, if any, of a mouth portion of a bag 10 occurring when the bag 10 is supplied to the grain-filling section by suction operations of a plurality of suckers 31 of a bag takeout mechanism can be eliminated by blowing air from the first and second nozzles 90, 95 onto each surface of the parts of the bag 10 which are in the vicinity of the mouth portion thereof. It is also possible to supply the bag 10 to the grain-filling section properly and accurately without bringing the bag 10 in contact with various kinds of members of the grain-filling section, and deliver the bag 10 smoothly to subsequent stages of treatment forward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic bagging apparatus for a granular material such as a grain and the like, in which a mouth portion of a bag is opened and both ends of the bag are gripped to fill a granular material. The present invention relates to a bag supply device for supplying bags.

[0002]

2. Description of the Related Art A filling machine equipped with a measuring device is arranged at the upper part of a frame, an auxiliary chute is provided at the lower part of the filling machine so as to be openable and closable, and bag opening means and gripping means are arranged in relation to the auxiliary chute. To form a filling portion of the granular material, and take out and supply bags one by one from the bag loading portion in which a large number of bags are loaded to the filling portion, and in the filling portion, the bags are opened by bag opening means or holding means. Various devices have been conventionally known as automatic bagging apparatuses for powder and granules in which a bag is held in an open state while the powder and granules weighed by a measuring instrument are filled in the bag. .

[0003] In this type of conventional automatic bagging apparatus,
Bag supply means for taking out one bag at a time from a large number of loaded bags and supplying it to a bag opening mechanism or a bag gripping mechanism located at a filling portion of a granular material such as grains is usually provided by the bag supply means shown in FIG. Is configured as shown in FIG. That is, a bag unloading mechanism 203 is disposed above a bag mounting table 202 on which a large number of bags 210 are stacked, and the bag unloading mechanism 203 is at least attached to the suction cup holder 232 attached to the tip of the piston rod 233 a of the bag supply cylinder 233. It has two suction cups 231, and these suction cups 231 are connected to a vacuum generator via a suction hose (not shown) through a suction cup holder 232. The bag supplying cylinder 233 is connected to a rotating motor (not shown), and by operating the rotating motor, the bag supplying cylinder 233 can be rotated by about 90 degrees from a position shown by a solid line to a position of a substantially horizontal state shown by a two-dot chain line. Is configured. When the bag 210 is supplied, the piston rod 233a is extended by the operation of the bag supply cylinder 233, and the piston rod 233a
The suction cup holder 232 provided at the tip of the
Lower with 1. The suction cup 231 is attached to the bag rest 202.
When the uppermost bag 210 of the plurality of bags 210 stacked on the upper surface of the bag 210 comes into contact with the uppermost bag 210, the uppermost bag 210 is sucked by the suction action, and thereafter, the upper side of the piston rod 233 a by the operation of the bag supply cylinder 233. Of the suction cup 231
Rises while sucking the bag 210, and removes the bag 210 from the bag mounting base 202. Thereafter, the bag supplying cylinder 233 and the suction cup 23 are operated by the operation of a rotation motor (not shown).
1 is rotated, and the bag 210 adsorbed on the suction cup 231 is filled with the filling portion 20 such as a grain disposed below the input hopper 206.
1 is supplied. In the filling section 201, the bag 210 is transferred to a bag gripping mechanism 205 and a bag opening mechanism, where both ends of the bag 210 are gripped and the bag mouth is opened, and powder such as grains is fed from the input hopper 206. Granules are being filled.

[0004]

By the way, in the bag supply means of the conventional automatic bag filling apparatus as described above, the plurality of suction cups of the bag removing mechanism are separated from the edge of the mouth of the bag by a certain distance. Since it is configured to adsorb a part and adsorb only one side (upper side) of the bag, take it out of the bag mounting table, and supply it to a filling portion for grains and the like, the bag mounting table is filled with the filling portion. A gap is formed at the mouth of the bag during the transfer of the bag, and as shown in FIG. 8 (b), air enters the bag through the gap, so that the mouth of the bag can be greatly expanded. is there. When the bag mouth portion is supplied to the filling portion in a greatly expanded state, a part of the opened bag mouth portion comes into contact with a member such as a bag gripping mechanism or a bag opening mechanism arranged in the filling portion. As a result, the bag cannot be supplied to the filling section accurately.

[0005] Further, since bags filled with granular material such as grains are made of paper, wrinkles generated by suction of suction cups, and folds near the mouth portion or bags themselves provided in advance are present. Due to wrinkles and flexibility, the bag mouth easily deforms. For this reason, the bag supplied to the filling section hits a member such as a bag gripping mechanism or a bag opening mechanism located on both sides of the bag supply path in the filling section due to deformation occurring near the mouth of the bag, and the bag is accurately supplied to the filling section. In some cases, it was not possible to supply them.

In order to solve such a situation, it is also possible to increase the distance between the two gripping portions of the bag gripping mechanism and the bag opening mechanism in the filling section so as to prevent contact with the supplied bag mouth. It is conceivable, however, to increase the distance between the two gripping parts of the bag gripping mechanism, it is necessary to increase the amount of movement of the two gripping parts, and therefore, it is necessary to increase the driving mechanism and its space. , The whole equipment becomes large,
Not preferred.

In view of the above, the present invention has been made in view of the problems in the bag supply means of the conventional automatic bagging apparatus. It is an object of the present invention to provide a bag supply device for an automatic bag filling device for grains or the like, which can supply a bag reliably and accurately.

[0008]

In order to achieve the above object, the present invention provides a bag feeding apparatus for an automatic bag filling apparatus for grains and the like, comprising a bag opening mechanism for opening a mouth of a bag, and a bag opening mechanism for opening the mouth of the bag. A bag gripping mechanism arranged in parallel with the bag opening mechanism to grip both ends of the bag opened by the mechanism, and can be opened and closed under a loading hopper for filling grains and the like into the opened bag. A filling unit such as a grain provided with a pair of auxiliary chutes provided in, and a bag mounting table for taking out a bag from a bag mounting table for loading a plurality of bags and supplying the bag to the filling unit. In a bag feeding device of an automatic bagging device for grains or the like comprising a bag extracting mechanism disposed above, air is ejected near a mouth portion of a bag supplied to the filling section by the bag extracting mechanism, and a bag mouth is opened. Nozzle means for correcting the attitude of the filling section is provided immediately below the filling section; It is characterized in.

In the bag feeding apparatus of the automatic bag filling apparatus for grains or the like according to the present invention, it is preferable that the bag unloading mechanism has a plurality of suction cups for sucking one side of the bag and supplying it to the filling section.

[0010] In the bag supply apparatus of the automatic bagging apparatus for grains or the like according to the present invention, the nozzle means disposed immediately below the filling section is provided with a nozzle on one side of the mouth of the bag supplied to the filling section. A first nozzle means for ejecting air to a portion near the center, and a bag disposed on the opposite side of the first nozzle means and slightly above the first nozzle means, and supplied to the filling section. A second nozzle means for ejecting air to a portion of the other surface of the mouth near both ends,
Further, the first nozzle means is configured to blow air to a portion near the center of the bag mouth on the surface opposite to the bag surface sucked by the suction cup of the bag removing mechanism, and the second nozzle means is It is preferable that air is ejected to a portion of the bag surface adsorbed by the suction cup near both ends of the bag mouth.

Further, in the bag feeding apparatus of the automatic bagging apparatus for grains or the like according to the present invention, the first nozzle means has at least two nozzles, and can be in contact with or separated from the supplied bag. Movably mounted, the second nozzle means having at least two nozzles, each of which is movably mounted in the width direction of the bag relative to the bag to be supplied. Is preferred.

[0012] In the bag supply device of the automatic bagging device for grains or the like according to the present invention, the bag opening mechanism includes at least two vacuum suction surfaces on one side near the mouth of the bag supplied by the bag unloading mechanism. A fixed suction cup, and at least two suction means provided to be able to move toward and away from the fixed suction cup by a cylinder means, and to vacuum-adsorb the other surface near the mouth of the supplied bag.
And a movable suction cup, and configured to open a mouth portion of a bag supplied by a separation movement of the movable suction cup with respect to the fixed suction cup, and a bag gripping mechanism of the bag opened by the bag opening mechanism. Two fixed grippers arranged side by side on both sides of the bag opening mechanism so as to grip both ends near the mouth and arranged corresponding to both ends near the mouth of the bag, and cylinder means. And two movable grippers provided so as to be capable of moving toward and away from the fixed gripper. The movable gripper is moved closer to the fixed gripper to grip both ends near the mouth of the bag. The pair of auxiliary chutes are driven to be opened and closed by a rotary cylinder, and when driven to open, enter the mouth of the bag opened by the bag opening mechanism to expand the mouth of the bag and measure it. Is It is preferably configured so as to perform reliably filling of the bag by guiding the grains and the like with charging hopper.

[0013]

In the bag feeding device of the automatic bag filling apparatus for grains and the like according to the present invention, air is blown out near the mouth of the bag supplied to the filling section for grains and the like by the bag extracting mechanism, and the bag mouth is opened. By disposing the nozzle means for correcting the posture immediately below the filling unit, during the supply movement of the bag, even if air enters into the bag and the bag mouth is greatly expanded, or the bag mouth is forward or Even if it is deformed to the rear side, air is blown from the nozzle means to the vicinity of the bag mouth, such as a portion near the center of the bag mouth or a portion near both ends, to suppress the spread and deformation of the bag mouth. ,
The posture of the bag mouth can be corrected, and the bag mouth can be accurately supplied to the filling unit without the bag mouth contacting various members such as the bag gripping mechanism and the bag opening mechanism of the filling unit. Then, the bag can be smoothly and accurately delivered for performing the subsequent processing in the filling section.

In the nozzle means, a first nozzle means for blowing air is supplied to a portion of the surface opposite to the bag surface adsorbed by the suction cup of the bag removing mechanism, which is near the center of the bag mouth. By movably mounting the bag so that it can be moved toward and away from the bag, the pressure of the ejected air can be adjusted as appropriate, and air can be applied to the bag surface adsorbed by the suction cup near both ends of the bag mouth. By attaching the second nozzle means for ejecting the air so as to be movable in the width direction of the bag, it is possible to appropriately adjust the air ejection position according to the state of the bag.

Further, in the suction cup of the bag opening mechanism and the gripper of the bag gripping mechanism in the filling portion, one of the members is fixed, and only the other member is movable, and the member fixed by the expansion and contraction movement by the cylinder means or the like is used. It is formed so that it can be brought into and out of position, and the opening and grasping of the bag supplied accurately and appropriately can be performed securely and simply using a small-sized mechanism without using a complicated link mechanism. Can be.

[0016]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a side view schematically showing a bag feeding apparatus of the automatic bagging apparatus for grains and the like of the present invention, and FIG. 2 is a bag feeding apparatus of the automatic bagging apparatus for grains and the like of the present invention. It is a principal part side view which shows the relationship between the bag taking-out mechanism in the apparatus and the bag opening mechanism in the filling section for grains and the like. FIG. 3 is a view of the filling portion of the grains and the like in FIG. 1 as viewed from the line AA, and FIG. 4 is a view as viewed from the line BB in FIG. 3, showing the relationship between the bag opening mechanism and the bag gripping mechanism. FIG. 5 is a cross-sectional view showing the bag holding mechanism along the line CC in FIG.

In FIG. 1, an upper portion of a frame 1 provided on a base 1a receives a granular material such as grains (hereinafter simply referred to as "grain") supplied from a measuring tank (not shown). A charging hopper 6 is provided.
The filling portion of the grain is positioned under the bag, and the bag opening mechanism 4 and the bag gripping mechanism 5 are provided in the filling portion of the grain.
In addition, a bag mounting table 2 for mounting bags is disposed at a lower front portion of the frame 1, and a bag unloading mechanism 3 is disposed above the bag mounting table 2. Further, a bag filled with grains is placed on the side of the frame 1 by the discharge plate 83 on the side of the apparatus (rear side of the paper).
There is provided a bag discharging mechanism 8 for discharging to the bag.

As shown in FIGS. 1 and 2, the bag take-out mechanism 3 disposed above the bag placing table 2
The bags 10 are separated from each other and taken out of the plurality of bags 10 loaded in the bag, and the bag opening mechanism 4 disposed at the grain filling portion
And the bag holding mechanism 5. The bag removing mechanism 3 has at least two suction cups 31 on a suction cup holder 32 attached to the tip of a piston rod 33a of a bag supply cylinder 33. These suction cups 31 pass through the suction cup holder 32 via a hose and a vacuum generator. (Not shown). The bag-supply cylinder 33 is attached to a cylinder holding plate 37 integrally fixed via a fixing member 36 to a rotation shaft 35 rotatably supported by a support bracket 3a provided at a front portion of the frame 1, and The rotation shaft 35 is a rotation motor (not shown) fixed to the support bracket 3a.
The cylinder holding plate 37 and the bag-supply cylinder 33 are rotated via a rotation shaft 35 by the operation of a rotation motor, and are substantially horizontally shifted from the positions shown by solid lines in FIGS. 2 (a position indicated by a two-dot chain line).

As shown in FIG. 2, when the piston rod 33a is extended by the operation of the bag supply cylinder 33, the suction cup holder 32 provided at the tip of the piston rod 33a, as shown in FIG. The plurality of suction cups 31 are lowered together. The plurality of suction cups 31 come into contact with the uppermost bag 10 of the plurality of bags loaded on the bag mounting table 2, and the suction operation of the suction cup 31 adsorbs one topmost bag 10. Due to the upward contraction of the piston rod 33a due to the actuation of 33, the suction cup 31 rises while adsorbing the bag 10, and takes out one bag 10 from the bag platform 2. Then, by the operation of the rotary motor, the cylinder holding plate 37 and the bag supply cylinder 33, and further, the suction cup 31
Is rotated, and the bag 10 sucked by the suction cup 31 is supplied to the bag opening mechanism 4 and the bag gripping mechanism 5 provided in the filling section.

The mounting member 40 constituting the filling portion of the grain is
As shown in FIG. 1 and FIG. 2, the lower part is opened and has a substantially inverted U-shaped cross section, and is attached to the upper frame member of the frame 1. As shown in FIG. 2 to FIG. The upper wall portion 40a has a central portion of the upper wall portion 40a through which the grain passes below the input hopper 6 and a pair of auxiliary chutes 63, 63 (see FIG. 3). A hole (not shown) is formed.
In addition, a bag opening mechanism 4 is provided on the front and rear side walls 40b and 40c.
And a bag holding mechanism 5 are provided in parallel at substantially the same height.

Then, immediately below the grain filling portion, a pair of first and second air jets that blow air to the supplied bag 10 on the surface (rear surface) opposite to the surface adsorbed by the suction cup 31 of the bag 10. One nozzle 90 and a pair of second nozzles 95 for ejecting air to the surface (front surface) adsorbed by the suction cup 31 of the bag 10 are provided on both sides of the bag supply path (FIGS. 2 and 3). 6 and FIG. 7).

A pair of first nozzles 90 for ejecting air to the rear surface of the bag 10 supplied to the filling section are held by a nozzle pipe 91 connected to an air supply source (not shown). The mounting member 40 has a substantially inverted U-shaped cross section, and is mounted movably back and forth along a lower surface of a guide base 49 fixed to a lower end portion of a rear side wall portion 40c of the mounting member 40 via an adjusting member 92. Then, a pair of first nozzles 9
0, as shown in FIG. 3, is a first of a bag opening mechanism 4 described later.
The suction cups are arranged so as to substantially correspond to the interval between the fixed suction cups 41a, 41b, and are configured to blow air to a portion near the center of the supplied bag mouth. Also,
By adjusting the distance from the first nozzle 90 to the bag 10 supplied from the first nozzle 90, the pressure of the air blown to the bag mouth can be appropriately set. On the other hand, a pair of second nozzles 95 that eject air to the front surface of the bag 10 supplied to the filling unit are slightly ahead of the other pair of first nozzles 90 in front of the front wall portion 40 b of the mounting member 40. It is attached to the upper frame member of the frame 1 via the nozzle tube 96 so as to be located above, and is mounted so as to be movable in the width direction of the supplied bag, that is, in the left-right direction in FIG. As shown in FIG. 3, the pair of second nozzles 96 are arranged at intervals substantially equal to the interval between the two fixed grippers 51 of the bag gripping mechanism 5, and are located near both ends of the supplied bag mouth. It is configured to blow air to the part. The interval between the pair of second nozzles 95 can be appropriately adjusted according to the size of the supplied bag.

As shown in FIGS. 2 to 4, the bag opening mechanism 4 includes at least two first fixed suction cups 41a, 41a and at least two first movable cups which can be moved toward and away from the first fixed suction cup. A first sucker group consisting of suction cups 41b, 41b, and a second suction cup group consisting of second movable suction cups 42b, 42b which can be brought into contact with and separated from the second fixed suction cups 42a, 42a; The first fixed suction cups 41a, 41a and the second fixed suction cups 42a, 42a are both held by a suction cup holder 43 fixed to the front wall portion 40b of the mounting member 40, and protrude inside the mounting member 40. Then, the first fixed suction cups 41a, 41a are positioned so as to correspond to a portion near the mouth of the bag 10 supplied by the bag unloading mechanism 3, and the second fixed suction cups 42a, 42a are connected to the first fixed suction cup 41.
a, 41a and both first fixed suction cups 41a, 41a
And is disposed so as to correspond to a portion closer to the mouth of the bag 10. Also, the first movable suction cup 41
b, 41b and the second movable suction cups 42b, 42b are movable to the inside of the mounting member 40 through the window 40d formed in the rear side wall 40c of the mounting member 40, and
Fixed suction cups 41a, 41a and second fixed suction cups 42a, 4a
It is configured to be movable so that it can come into contact with each of 2a. The two opening cylinders 45, 45 (see FIGS. 2 and 3) that drive the first movable suction cups 41b, 41b and the second movable suction cups 42b, 42b back and forth are attached to the mounting member 4
The piston rods 45a, 45 that are disposed on the upper wall 40a of the first piston rod 40 so as to be separated from each other and extend and contract in the front-rear direction.
A connection bar 46 is attached to a, and an upper portion of a U-shaped drive frame 47 is fixed to the connection bar 46. The first movable suction cup 4 is provided on the lower front surface of the drive frame 47.
A suction cup holder 48 for holding the first and second movable suction cups 42b, 42b is fixedly attached thereto, and a slide body 47a is attached to the lower rear surface of the drive frame 47. The slide body 47a is configured to move along two guide shafts 49a arranged on a guide base 49 provided at the lower end of the rear wall portion 40c of the mounting member 40, and the drive frame body 47 is provided. To guide the movement. In addition, the first fixed suction cup 41a and the movable suction cup 41b, and the second fixed suction cup 42a and the movable suction cup 42b are connected to the vacuum generator (not shown) through hoses through the fixed and movable suction cup holders 43 and 48, respectively. ).

As shown in FIGS. 3 to 5, the bag gripping mechanism 5 is provided with a bag opening mechanism 4 which is supplied by the bag removing mechanism 3 and which is opened by rotation of auxiliary chutes 63, 63 which will be described later. Both ends of the mouth are gripped during filling of the grain, and two fixed grippers 51, 5
1 and two movable grippers 52, 52 which can be moved toward and away from the fixed gripper, and the fixed grippers 51, 51 are provided on the front wall portion 40b of the mounting member 40 by the first fixed suction cup 41.
a, 41a, are fixed to portions corresponding to both ends of the bag 10, and the other movable grippers 52, 52
0 are attached to the piston rods 53a, 53a of the bag gripping cylinders 53, 53 fixed to the rear surface of the rear side wall portion 40c so as to be able to approach and separate from the fixed grippers 51, 51. The movable gripper 5
2 and 52, the piston rods 53a, 53a
The movable grippers 52 are located inside the mounting member 40 so as to be able to expand and contract through the holes 40e, 40e. The fixed grippers 51, 51 and the movable grippers 52, 52 are provided with a hard elastic body such as urethane rubber provided with concave and convex grooves having a shape meshing with each other on the surface, and the lower portions of both grippers 51, 52 are supplied. The bag 10 is obliquely cut so as to guide the approach of the coming bag 10 and to open the lower portion so as to easily and surely enter between the grippers (see FIG. 5).

The upper wall 4 of the mounting member 40 having a substantially inverted U-shaped cross section.
As shown in FIG. 3, the input hopper 6 is attached to the upper side of a hole (not shown) provided in the center portion of the input hopper 0 a by a hopper mounting plate 62. A pair of auxiliary chutes 63, 63 that can be opened and closed are provided. Each of the pair of auxiliary chutes 63 has a U-shaped cross section having a bottom wall and both side walls, and is driven to rotate by a rotary cylinder 65 fixed to an upper wall plate 40 a of the mounting member 40. The pair of auxiliary chutes 63, 63 configured as described above are always in a state of closing the lower part of the input port 61 of the input hopper 6, and the first sucker group and the second
After the suction cup group is operated to open the mouth of the bag 10, a pair of auxiliary chutes 6 are operated by the operation of the rotary cylinders 65, 65.
3 and 63 respectively rotate. A pair of auxiliary chutes 6
Due to the rotation of 3, 63, the respective tip portions pass through the holes provided in the upper wall portion 40a of the mounting member 40, rotate until the bottom walls of the two become parallel, and pass under the inlet 61. Open. Thus, the pair of auxiliary chutes 63, 63
The tip of the side wall passes through the hole in the upper wall portion 40a, and rotates while entering the mouth portion of the opened bag 10 located therebelow, and the mouth portion of the bag 10 is further expanded to open the bag opening. In addition to ensuring that the grains are filled, the grains are guided into the bag 10 when the grains are filled.

Next, the operation of the present embodiment configured as described above will be described.

As shown in FIG. 2, when the bag 10 is supplied to the grain filling section by the bag removing mechanism 3, the bag supply cylinder 3
When the piston rod 33a is extended by the operation of 3, the suction cups 31 move down together with the suction cup holders 32. The suction cup 31 abuts on the uppermost bag 10 of the plurality of bags loaded on the bag platform 2 and sucks one of the uppermost bags 10 by its suction action. Due to the upward contraction of the rod 33a, the suction cup 31 becomes the bag 1
0 is sucked, and one bag 10 is taken out of the bag platform 2. Then, by the operation of the rotation motor, the cylinder holding plate 37, the bag supply cylinder 33, and the suction cup 31 are integrally rotated to supply the bag 10 to the bag opening mechanism 4 and the bag gripping mechanism 5 provided in the filling portion. I do. At this time,
The plurality of suction cups 31 of the bag unloading mechanism 3 adsorb a portion separated from the upper edge of the mouth of the bag 10 by a certain distance,
Only one side of the bag (the upper side in FIG. 2) is adsorbed,
Supply the bag 10.

When the bag is supplied, a plurality of suction cups 31
As shown in FIG. 6, when the mouth portion of the bag 10 adsorbed to the nozzle passes in front of the pair of first nozzles 90, that is, immediately before reaching the grain filling portion, the pair of first nozzles By blowing air from 90 and blowing air toward the center near the mouth on the rear surface of the bag 10, even if the bag mouth is greatly expanded by the supply movement of the bag, or the bag mouth is Even if the bag mouth is deformed rearward, the air blown out from the pair of first nozzles 90 can suppress the expansion and deformation of the bag mouth. Further, the mouth of the bag 10 is moved slightly upward to move the pair of second nozzles 95.
When passing through the front of the bag 10, air is ejected from the pair of second nozzles 95, and the air is blown toward the both ends of the mouth on the front surface of the bag 10, so that the air is blown forward of the mouth of the bag 10. Deformation is suppressed, and the mouth of the bag 10 is
First fixed suction cup 41a and fixed gripper 5 of bag gripping mechanism 5
1 can be prevented from abutting. Then, the timing of the ejection of the air from the first nozzle 90 and the second nozzle 95 is adjusted in accordance with the timing of the rotation of the rotation motor (not shown) of the bag extracting mechanism 3 and the rotation of the bag supply cylinder 33, or the air is sucked to the suction cup 31. It can be set appropriately in accordance with the timing of the movement of the bag 10 itself.

Thus, the bag 1 supplied to the filling section is
In contrast, the first nozzle 90 and the second nozzle 95 respectively blow air to the rear and front surfaces near the bag mouth to correct the deformation near the mouth of the bag 10 and fill the bag 10 with the filling portion. Can be supplied accurately. That is, when air enters the bag through the gap at the mouth of the bag, the mouth of the bag greatly expands, and even if the bag is supplied in a state where the mouth of the bag is greatly expanded, the bag 10 is located near the center near the mouth. By blowing air from the first nozzle 90 to the portion, the spread can be suppressed, and the bag 10
Even if the vicinity of the mouth is deformed rearward, it can be corrected. Furthermore, even when the vicinity of the mouth of the bag 10 is deformed to the front side, the deformation can be corrected by blowing air from the second nozzle 95 to a portion near the both ends near the mouth of the bag 10. . Therefore, in the grain filling portion, both suction cups 41a and 41b of the bag opening mechanism 4 and both grippers 51 and 5 of the bag gripping mechanism 5 located on both sides of the bag.
The bag 10 can be supplied accurately and appropriately without contacting those members without making the interval of 2 unnecessarily large, and the bag 10 can be smoothly supplied to the bag opening mechanism 4 and the bag gripping mechanism 5. Can be delivered.

Then, the piston rods 45a, 45a are contracted by the operation of the opening cylinders 45, 45 of the bag opening mechanism 4 with respect to the bag 10 supplied to the filling section, and are driven by the guide shaft 49a to move. By moving the frame body 47 forward, the first movable suction cups 41b and 41b and the second movable suction cups 42b and 42b become the first fixed suction cups 41b.
a, 41a and the second fixed suction cups 42a, 42a, the first fixed suction cup 41a and the first movable suction cup 41b,
Further, the second fixed suction cup 42a and the second movable suction cup 42b press the respective parts of the bag 10 from both sides. Then, the first sucker group and the second sucker group are communicated with the vacuum generator,
By the suction action, the front side and the rear side of the portion near the mouth of the bag are sucked. Then, open cylinder 4
Due to the extension movement of the piston rods 45a, 45a by the operations of 5, 45, the first movable suction cups 41b, 41b and the second movable suction cups 42b, 42b,
42b moves rearward while adsorbing one surface side of the mouth of the bag, that is, the first fixed suction cup and the first movable suction cup, and the second fixed suction cup and the second movable suction cup are separated from each other. Open the mouth. The bag take-out mechanism 3 performs the suction operation of the suction cup 31 for opening after the suction cup on the fixed side and the suction cup on the movable side of the bag opening mechanism 4 respectively adsorb the front side and the rear side of the bag 10 by the suction operation. Stop and return to the original position.

Thereafter, the pair of auxiliary chutes 63 are rotated by the operation of the rotary cylinders 65 of the pair of auxiliary chutes 63, and the tips of the auxiliary chutes 63 are provided on the upper wall portion 40 a of the mounting member 40. Through the hole,
Then, the bag 10 is rotated while entering into the opened mouth of the bag 10 sucked and held thereunder, and the opened mouth of the bag 10 is expanded to secure the opening.

The bag holding cylinder 5 of the bag holding mechanism 5
3 to move the movable gripper 52 to the fixed gripper 51.
To grip both ends of the bag 10 opened by both grippers 51 and 52. Thereafter, the filling of the bag 10 with the grains via the charging hopper 6 and the auxiliary chutes 63, 63 is started.

[0034]

As described above, according to the present invention,
Even if the mouth portion of the bag supplied to the filling portion of the grain is deformed or spread, the air is blown to the front and rear surfaces of the mouth portion of the bag immediately below the filling portion of the grain, so that the opening portion of the bag mouth portion is opened. The posture of the bag mouth can be corrected by suppressing deformation and expansion, and the bag can be accurately supplied to the filling unit without abutting against members such as the bag gripping mechanism and bag opening mechanism located at the filling unit. And the bag can be delivered smoothly and accurately for further processing in the filling section.

Further, the suction cup of the bag opening mechanism and the gripper of the bag gripping mechanism in the filling section receive the bag supplied by the bag removing mechanism, open the bag opening by the bag opening mechanism, and rotate the pair of auxiliary chutes. After the opening of the bag is reliably opened by the movement, the bag is held by the bag holding mechanism at both ends of the opening of the bag.One of the members is fixed and only the other member is movable. It is formed so as to approach and separate from the member fixed by the expansion and contraction movement by the cylinder means etc., and the opening and grasping of the bag can be reliably performed with a simple and small mechanism without using a complicated link mechanism etc. Can be performed.

[Brief description of the drawings]

FIG. 1 is a side view schematically showing a bag feeding device of an automatic bagging device for grains and the like according to the present invention.

FIG. 2 is a main part side view showing a relation between a bag removing mechanism in a bag supplying device of the automatic bag filling apparatus for grains and the like according to the present invention and a bag opening mechanism in a filling section for grains and the like.

FIG. 3 is a view of a filling portion of a grain or the like in FIG. 1 as viewed from line AA.

FIG. 4 is a view taken along line BB in FIG. 3 and shows a relationship between a bag opening mechanism and a bag holding mechanism.

FIG. 5 is a cross-sectional view showing the bag holding mechanism along the line CC in FIG. 4;

FIG. 6 is a schematic enlarged view of an embodiment in which air is ejected from a rear first nozzle to a bag immediately before being supplied to a filling section in a bag supply device of an automatic bagging device for grains or the like of the present invention. FIG.

FIG. 7 is a schematic enlarged view of an embodiment in which air is ejected from a second nozzle in front of a bag immediately before being supplied to a filling section in the bag supply device of the automatic bag filling device for grains and the like of the present invention. FIG.

FIG. 8A is a schematic side view of a bag supply device in a conventional automatic bag filling device, and FIG. 8B is a schematic diagram illustrating a state of the bag when the bag is supplied to a filling unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 2 Bag mounting base 3 Bag removal mechanism 4 Bag opening mechanism 41a First fixed suction cup 41b First movable suction cup 42a Second fixed suction cup 42b Second movable suction cup 45 Opening cylinder 5 Bag gripping mechanism 51 Fixed gripper 52 Movable gripper 53 Bag gripping Cylinder 6 Input hopper 63 Auxiliary chute 65 Rotary cylinder 8 Bag discharge mechanism 10 Bag 40 Mounting member 40a Upper wall portion 40b Front wall portion 40c Rear wall portion 90, 95 Nozzle 91, 96 Nozzle tube

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Seizou Kawashima 4290 Fujioka, Fujioka-cho, Shimotsuga-gun, Tochigi Prefecture Inside Tiger Kawashima Co., Ltd.

Claims (6)

[Claims] 1. A bag opening mechanism (4) for opening the mouth of a bag, and the bag opening mechanism (4) for gripping both ends of the bag opened by the bag opening mechanism (4). A bag gripping mechanism (5) arranged in parallel, and a pair of auxiliary chutes (63, 63) provided to be openable and closable below a charging hopper for filling the opened bags with grains and the like. A bag for loading a plurality of bags and a bag loading table for loading a plurality of bags from the bag loading table; A bag feeding device for an automatic bag filling device for grains or the like comprising a bag removing mechanism (3), wherein air is blown out near the mouth of the bag supplied to the filling section by the bag removing mechanism, and the bag mouth is opened. Nozzle means for correcting the posture is disposed immediately below the filling portion, such as grain Bag-supply apparatus of the dynamic bagging equipment. 2. The automatic bagging device for grains and the like according to claim 1, wherein the bag removing mechanism (3) has a plurality of suction cups (31) for sucking one surface of the bag and supplying the suction surface to the filling section. Bag feeding equipment. 3. The first nozzle means (9) for discharging air to a portion near the center of one surface of a mouth portion of a bag supplied to the filling section, the nozzle means being disposed immediately below the filling section.
0, 91) and a portion of the other side of the mouth of the bag, which is disposed on the opposite side of the first nozzle means and slightly above the first nozzle means and is supplied to the filling section, near both ends. 3. A bag supply device for an automatic bagging device for grains and the like according to claim 1, further comprising second nozzle means (95, 96) for jetting air. 4. A first nozzle means (90, 91) is provided at a portion near the center of a bag mouth on a surface opposite to a bag surface adsorbed to a suction cup (31) of a bag removing mechanism (3). A second nozzle means (95,
96. The automatic method for grain or the like according to claim 3, wherein 96) is configured to blow air to a portion of the bag surface adsorbed to the sucker (31) near both ends of the bag mouth. Bag feeding device for bag filling device. 5. The first nozzle means (90, 91) has at least two nozzles (90), and is movably mounted so as to be able to move toward and away from the supplied bag.
The second nozzle means (95, 96) has at least two nozzles (95), each of which is movably attached to the supplied bag in the width direction of the bag. The bag supply device for an automatic bagging device for grains and the like according to claim 3 or 4, wherein 6. A bag opening mechanism (4) comprising: at least two fixed suction cups for vacuum-sucking one surface near the mouth of a bag supplied by a bag unloading mechanism (3); And at least two movable suction cups that are provided so as to be able to contact and move away from each other, and vacuum-suck the other surface near the mouth of the supplied bag, and are supplied by moving the movable suction cup with respect to the fixed suction cup. The bag gripping mechanism (5) is configured to open the mouth of the bag, and the bag opening mechanism (5) is configured to grip both ends near the mouth of the bag opened by the bag opening mechanism (4). 4) two fixed grippers arranged side by side on both outer sides and corresponding to both ends near the mouth of the bag, and provided so as to be able to move toward and away from the fixed gripper by cylinder means. With two movable grippers The movable gripper is moved closer to the fixed gripper so as to grip both ends near the mouth of the bag. The pair of auxiliary chutes (63) are driven to open and close by a rotary cylinder, and are driven to open. When the hopper is opened, it enters the mouth of the bag opened by the bag opening mechanism (4), expands the mouth of the bag, and feeds the measured grains and the like into the hopper (6).
6. A bag feeding device for an automatic bagging device for grains or the like according to claim 1, wherein the bag feeding device is configured to be guided together with the bag to surely fill the bag.