JP3374286B1 - Bag packing device and bag packing method - Google Patents

Abstract

An object of the present invention is to provide a means that can efficiently and continuously pack bags using a tubular packaging material. SOLUTION: This bag packing apparatus 100 includes a packaging material roll supporting member 101 rotatably supporting a packaging material roll in which a tubular packaging material is continuously wound, and a tubular packaging material from the packaging material roll. A feed roller 102 that feeds out the material, a packing material suction member 103 for sucking and holding the packing material, and performing perforation and air supply; a perforation member 104 and an air supply member that are provided so as to be freely inserted through the packing material suction member 103 105, a perforation assisting member 106 provided to be able to advance and retreat with respect to the packaging material suction member 103, an opening forming member 107 for forming a cut in the packaging material, and an opening holding member for sucking the cut edge of the packaging material 108, a chute 109 for introducing an article to be bagged into the packaging material, and a packaging material sealing member 110 for fusing and sealing the packaging material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bagging device for bagging desired articles using a tubular packaging material.

[0002]

2. Description of the Related Art As is well known, a synthetic resin film such as polyethylene is used as one of packaging materials for foods and the like, and a sheet-shaped synthetic resin film is used for bagging using the synthetic resin film. And a method using a tubular synthetic resin film.

In the method using a sheet-shaped synthetic resin film, as shown in FIG. 22, a sheet-shaped packaging material is wound and folded in a bag shape along a cylindrical mold 1 to seal both side ends thereof. After heat-sealing at 2 and further sealing the tip side with the sealer 3 to form the bottom of the bag, the bag 1 is filled with an article to be packed such as food from the upper end opening of the mold 1 to form a packaging material. After being sent for a predetermined amount, the upper part of the bag is fused with the sealer 3 to complete the bag packing.

On the other hand, in the method using a tubular synthetic resin film, as shown in FIG. 23, first, a tubular packaging material is folded into a bellows shape and attached to a cylindrical core 4 by a predetermined amount. After pulling out a predetermined amount by the chuck mechanism 5 that holds the packaging material and pulls it down, the tip side is heat-sealed by the sealer 6 to form the bag bottom portion, and then an article such as food is put into the bag from the core 4. Then, the chuck mechanism 5 again lowers the bag by a predetermined amount, and then the upper part of the bag is heat-sealed by the sealer 6 to complete the bag packing.

[0005]

However, if a bagging device is constructed by a method using a sheet-shaped synthetic resin film, the width of the packaging material needs to be at least twice the bag width, so that the device is large. In addition, since it is necessary to heat-bond not only the upper and lower parts of the bag but also the side part, the mechanism for folding the bag-like material while feeding it and further heat-bonding it becomes complicated.

On the other hand, if a tubular synthetic resin film is used, the packaging material has the same width as the bag, so that the apparatus can be downsized, and it is not necessary to heat-bond the side portions of the bag. Although the structure of the device is relatively simple, in the conventional method, it is necessary to attach the packaging material to the core 4 in a predetermined amount, and the roll-shaped packaging material is used as it is for continuous bag filling. There was a problem that it was not possible to do so and efficiency was poor. Moreover, when the packaging material attached to the core 4 is pulled out by the chuck mechanism 5, the packaging material may be damaged.

The present invention has been made in view of these points, and an object of the present invention is to provide a means capable of efficiently and continuously bagging using a tubular packaging material.

[0008]

The bagging device according to claim 1 of the present invention, which has been made to achieve the above object, is a device for bagging a desired article by using a tubular packaging material. A delivery means for delivering the tubular packaging material to a predetermined position, a packaging material swelling means for punching a hole in a part of the packaging material and for supplying air to the internal space of the packaging material from the hole, An opening forming means provided upstream of the ejecting means for making a radial cut in the packaging material leaving a predetermined portion, and an opening forming means provided immediately downstream of the packaging material swelling means for inserting the packaging material and packaging material. An annular opening holding means for sucking the peripheral edge of the cut and holding the cut in an open state, an article introducing means for guiding the article to be packed into the opening of the packaging material, and an upstream side of a hole formed in the packaging material. And packaging material sealing means for sealing the packaging material on the downstream side.

The present invention (claim 2) is the bagging apparatus according to claim 1, wherein the packaging material swelling means has a suction port for sucking the outer peripheral surface of the packaging material, perforation and air. A packaging material suction member having an inlet / outlet for supply, a suction pump in communication with the suction port, a rod-shaped perforating member and a tubular air supply member provided in the inlet / outlet so as to be retractable, and a packaging material. And a perforation assisting member that is provided so as to be capable of advancing and retracting with respect to the packaging material suction member.

The present invention (Claim 3) is the bagging apparatus according to Claim 1, wherein the opening holding means has a suction groove extending along the inner peripheral edge of the annular member. It is in communication with the suction pump.

Further, the present invention (claim 4) is the bagging apparatus according to claim 3, wherein the packaging material suction member is formed with the inlet / outlet on a surface in contact with the outer peripheral surface of the packaging material. At least two suction ports are formed so as to be sandwiched.

Further, the present invention (Claim 5) is the bagging apparatus according to Claim 3, wherein the packaging material suction member is formed with the inlet / outlet on a surface in contact with the outer peripheral surface of the packaging material. The suction port is formed in an annular shape along the outer circumference.

According to the present invention (claim 6), in the bagging apparatus according to any one of claims 1 to 3, the article introducing means is provided in a tubular shape so as to be fitted with the opening holding means. A member, which is fitted with the opening holding means,
The cut edge of the packaging material held in the open state is sandwiched between the fitting portions.

According to a seventh aspect of the present invention, in the bag packing method, a tubular packaging material is inserted through an annular member, and a predetermined position of the packaging material is sealed to form one end of the bag, A hole is formed in a part of the packaging material, and by supplying air to the internal space of the packaging material from the hole, the step of inflating the packaging material to inscribe in the annular member, and immediately downstream of the annular member, After making a cut in the packaging material to leave a predetermined portion and opening the packaging material, a step of adsorbing the opening peripheral edge to the annular member, a step of introducing an article to be bagged into the opening of the packaging material, Release the adsorption of the packaging material and pull out a certain amount of packaging material,
The step of forming the other end of the bag by sealing the packaging material on the downstream side of the article placed in the opening peripheral packaging material of the packaging material and on the upstream side of the hole.

Further, according to the present invention (claim 8), in the bagging method according to claim 7, after adsorbing the opening peripheral edge of the packaging material to the annular member, the tubular member is fitted to the annular member. Then, the peripheral edge of the opening is sandwiched between the fitting portions.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. 1 to 3 are a front view, a left side view, and a right side view showing a schematic configuration of a bagging device according to an embodiment of the present invention. The bagging device 100 has a tubular packaging material. A packaging material roll supporting member 101 that rotatably supports a continuously wound packaging material roll, a feed roller (delivery means) 102 that feeds a tubular packaging material from the packaging material roll, and a packaging material by suction and holding. In addition, the packaging material suction member 103 for performing perforation and air supply, the perforation member 104 and the air supply member 105 that are provided so as to be insertable into the packaging material suction member 103, and move forward and backward with respect to the packaging material suction member 103. A perforation assisting member 106 that is freely provided, an opening forming member 107 for forming a cut in the packaging material, an opening holding member 108 that sucks a cut peripheral edge of the packaging material, and an article to be packed into a packaging material. Shoot to introduce An article introducing means) 109 is for and a packaging material sealing member 110 for sealing by fusing the packaging material.

In each figure, for convenience of explanation, the frame 1
The detailed configuration of 0 is omitted. Further, operation control means such as a sequencer and a relay circuit, a driving power source, an air supply source, a suction pump, a control valve, etc. are omitted, but these are well-known and arbitrary operation control means, etc., inside or outside the frame 10. They may be arranged at required positions and connected to the above-mentioned respective constituent members.

As shown in the respective drawings, the packaging material roll supporting member 101 has a round rod-shaped shaft around the winding center of a packaging material roll in which a tubular packaging material made of synthetic resin is folded in a plane and wound. 11
Is inserted, and the shaft 11 is horizontally supported by columns 12 at both ends thereof.
It is fixed to the frame 10 on the rear side of the upper surface. Thereby, the packaging material can be continuously pulled out from the packaging material roll. In addition, in the present embodiment, the tubular packaging material is a wound packaging material roll, but other than roll-shaped packaging material may be used as long as the packaging material can be continuously supplied. The good thing is right.

The feed roller 102 is, as shown in each drawing,
It is provided on the front side of the upper surface of the bagging device 100, and the two elastic rollers 20 and 21 are provided in upper and lower two stages so that their elastic surfaces in the circumferential direction come into contact with each other. The elastic roller 21 is interlocked by a belt 22 and a pulley 22 connected to a rotating shaft of a motor (not shown) on one end side, and the elastic roller 20 and a gear 24 on the other end side.
Is engaged with. Therefore, the rotation of the motor is transmitted to the lower elastic roller 21 so that the elastic roller 21 rotates in a certain direction, and further the elastic roller 21 is located above the elastic roller 21.
Is transmitted to the elastic roller 20 to rotate in the opposite direction to the elastic roller 21. Therefore, the two elastic rollers 20, 21
A packaging material is sandwiched between the elastic rollers 20 and 21, and the contact surfaces of the elastic rollers 20 and 21 rotate the motor toward the front of the bagging apparatus 100 by a predetermined amount, so that the sandwiched packaging material is forwarded by a predetermined amount. .

The elastic surface of each of the elastic rollers 20 and 21 is for securely sandwiching the packaging material without damaging the packaging material, and a known material such as silicon can be used. Further, a guide rod 25 is provided on the downstream side of the feed roller 102, and the guide rod 25 has a packaging material roll that is fed from the rear side of the bagging device 100 to the front side thereof, and further downward. In order to prevent the movement, the packaging material is easily slid, for example, a stainless steel round bar or the like, and may be omitted depending on the mounting position of the feed roller 102 and the like.

As shown in the drawings, the packaging material suction member 103 is fixed to the frame 10 slightly above the center of the front surface of the bagging device 100, and has a suction port for sucking the outer peripheral surface of the packaging material. And a port for perforation and air supply. FIG. 4 is a front view and a cross-sectional view showing a detailed configuration of the packaging material suction member 103. As shown in the figure, the packaging material suction member 103 is a columnar member and has a suction port on the front side. 30 and a doorway 31 are formed.
The suction port 30 is located at the symmetrical position of the packaging material suction member 103.
Furthermore, each suction port 30 is formed with a suction passage 30a which is formed by axially piercing a predetermined depth from each suction port 30, bent outward at a substantially right angle, and penetrates to the peripheral side surface. It is connected to a suction pump (not shown).
On the other hand, the doorway 31 is at the center (axis) of the packaging material suction member 103.
And is a through hole whose diameter is tapered toward the back surface.

Punch member 104 and air supply member 105
As shown in FIG. 5, they are respectively disposed in the frame 10 on the same plane as the packaging material suction member 103. As shown in FIGS. 2 and 5, the piercing member 104 is used for the frame 10
A heat rod 42 that generates heat by energization is fixed to the tip side of the slide table 41 that slides along the guide rail 40 that is directed from the inner right side (the left side in FIG. 5) to the packaging material suction member 103. A crank mechanism composed of a crank arm 44 and a crank rod 45 is connected to the base end side with the rotary shaft 43a of the motor 43 as a crank shaft. Although FIG. 5 shows the piercing member 104 in the most retracted position (solid line), the hot rod 42
Is rotated forward by the rotation of the motor 43 toward the entrance / exit 31 of the packaging material suction member 103 (one-dot chain line), the tip end portion is projected from the entrance / exit 31 at the most advanced position, and is retracted again.

On the other hand, the air supply member 105 is, as shown in FIGS. 3 and 5, the left side in the frame 10 (the right side in FIG. 5).
Guide rail 50 directed from the packaging material to the packaging material suction member 103
The structure is substantially the same as that of the perforation member 104, except that an air nozzle 52 communicating with an air supply source (not shown) is fixed to the tip end side of a slide table 51 that slides along. A crank mechanism including a crank arm 54 and a crank rod 55 is connected to the base end side of the slide table 51 with the rotary shaft 53a of the motor 53 as a crank shaft. Therefore, as shown in FIG. 5, the air supply member 105 also advances and retreats toward the entrance 31 of the packaging material suction member 103 by the rotation of the motor 53.

As shown in FIGS. 1, 2 and 6, the perforation assisting member 106 is located on the right side (left side in FIG. 6) of the front surface of the frame 10 at substantially the same height as the packaging material suction member 103.
A suction cup 62 is fixed to the tip of an arm 61 rotatably provided on the support shaft 60. The arm 61 is provided with a suction passage (not shown) that connects the suction cup 62 and the suction pump to each other, and the inside of the suction cup 62 can be pulled. A cylinder rod of an air cylinder 63 is connected near the center of the arm 61, and the arm 61 is rotated about the support shaft 60 as the cylinder rod advances and retracts. The length of the arm 61 is substantially the same as the distance from the support shaft 60 to the packaging material suction member 103. Therefore, as shown in FIG.
When the arm 61 rotates, the suction cup 62 fixed to the tip of the arm 61 moves back and forth to a position close to the packaging material suction member 103.

The packaging material suction member 103 and the perforating member 10
4, the air supply member 105, and the perforation assisting member 106 constitute the packaging material swelling means of the present invention, and the packaging material suction member 10
The packaging material is sucked by the suction ports 30 of 3 and the entrance 31
Is held in the state of being attached to the
By 06, the suction cup 62 that has sucked the facing packaging material that has been suction-held rotates to spread the packaging material that is folded into a flat surface, and in this state, the punching member 104 and the air supply member 105 allow the inlet / outlet port 31 to move.
As a result, the holes are made at only one location of the packaging material, and air is introduced into the internal space of the tubular packaging material from the holes to swell the packaging material. In the present embodiment, the heat rod 42 of the punching member 104 is used to make a hole in the packaging material.
Other members may be used to form the holes. Further, the hole is sufficient as long as the air supply member 105 can be inserted, and does not necessarily have to be a complete hole. For example, a hole in which the packaging material is torn in a U shape and the packaging material remains in a tongue shape. It may be.

FIG. 7 shows another form of the packaging material suction member according to the present invention. The packaging material suction member 111 is composed of a columnar body 32 and a cylindrical body 33. More specifically, a through hole 32a penetrating in the axial direction is formed in the center of the front surface of the cylindrical body 32, and the through hole 32a is expanded in diameter inside the cylindrical body 32. Further, from the predetermined position of the through hole 32a toward the peripheral side surface, the through hole 32
b is symmetrically drilled. On the other hand, the cylindrical body 33 has a tapered shape, the outer diameter on the smaller diameter side is smaller than the outer diameter on the front side of the through hole 32a, and the outer diameter of the larger diameter opening is on the rear side of the through hole 32a. Is larger than the outer diameter of. The cylindrical body 33 is inserted into the through hole 32a of the columnar body 32 so that the smaller diameter side is the front side, and is welded and fixed on the rear side, and the smaller diameter side opening is substantially flush with the front side of the cylindrical body 32. Has become. As a result, the small-diameter side opening of the cylindrical body 33 is connected to the entrance 3
4 and the gap between the through hole 32a of the cylindrical body 32 and the small-diameter side opening of the cylindrical body 33 forms an annular suction port 35.

The suction port 35 of the packaging material suction member 111 is similar to the packaging material suction member 103 in that the packaging material is sucked and held in a state of being attached to the entrance 34.
The periphery of the hole formed in the packaging material by the perforation member 104 is
As shown by the alternate long and short dash line in FIG. 7 (b), since it is sucked inside the through hole 32a and attached to the inner peripheral surface, the suction port 35 is not completely sealed by the packaging material. . Therefore, when the suction is stopped, the outside air quickly flows into the through hole 32a from the suction port 35, and the packaging material sucked in the suction port 35 is quickly released.

As shown in FIGS. 1 to 3 and 8, the opening forming member 107 is provided above the packaging material suction member 103, that is, on the downstream side with respect to the feeding direction of the packaging material. A nichrome wire 72 is stretched around the tip side of the slide frame 71 that slides along the guide rail 70 fixed to the frame 10, that is, near the tip protruding forward of the frame 10, and the base end of the slide frame 71 is extended. On the side, a crank mechanism including a crank arm 74 and a crank rod 75 is connected to the side with the rotary shaft 73a of the motor 73 as a crank shaft. Further, a coil spring 77 is attached to one of the fixing members 76 which are respectively provided at the tips of the slide frames 71 and which fix the nichrome wire 72, whereby tension is applied to the nichrome wire 72 so that the nichrome wire 72 is always maintained. It is stretched under tension. FIG. 8 shows the nichrome wire 72 at the maximum protruding position (solid line).
However, the nichrome wire 72 slides toward the frame 10 by the rotation of the motor 73 (one-dot chain line), and the nichrome wire 72 that has been heated by energization forms a cut in the packaging material. There is. Nichrome wire 7
Of course, other members such as a blade may be used instead of 2.

As shown in FIGS. 1 to 3 and 9, the opening holding member 108 is provided immediately below the opening forming member 107 on the front surface of the frame 10, that is, on the upstream side with respect to the feeding direction of the packaging material. The outer shape is an annular shape having an octagonal shape and a circular inner shape, and a suction groove 80 is formed obliquely downward along the inner peripheral edge from the vicinity of the upper end.
Two suction passages 81 per side of the octagon penetrate from the inner part to the side face. In addition, each suction passage 81
Is connected to a suction pump (not shown). As a result, the notch peripheral edge of the packaging material that is inserted into the opening holding member 108 and has a notch is sucked into the suction groove 80, and the notch is held in an open state. The outer shape of the opening holding member 108 is not limited to a polygon such as an octagon, but may be another shape such as a circle, and the strength and uniformity of the suction force of the suction groove 80 may be determined. Needless to say, the suction passage 81 can be increased or decreased in consideration.

The chute 109 is, as shown in FIGS. 1 to 3 and 10, the opening holding member 1 on the front surface of the frame 10.
08, that is, on the immediate downstream side with respect to the feeding direction of the legal material, and at the tip of an arm 91 rotatably provided on the support shaft 90, substantially the same as the opening holding member 108. A cylindrical body 92 having a diameter and an enlarged diameter near the upper end is fixed. Further, a cylinder rod of an air cylinder 93 is connected near the center of the arm 91, and the arm 91 rotates about the support shaft 90 as the cylinder rod moves forward and backward, and as shown in FIG. The tubular body 92 fixed to the position moves forward and backward to a position where it overlaps with the opening holding member 108. As a result, the tubular body 92 serves as an introduction path for introducing the article into the internal space of the packaging material held in the open state by the opening holding member 108.

The chute 109 may be moved up and down in the vertical direction so that the chute 109 can be fitted to the opening holding member 108. FIG. 11 shows a sectional configuration of the cylindrical member 92 of the opening holding member 108 and the chute 109.
As shown in the drawing, a protrusion 92a having an outer diameter slightly smaller than the inner diameter of the opening holding member 108 is formed on the inner peripheral edge of the lower end side of the tubular body 92, and the suction groove 80 of the opening holding member 108 is formed in the protrusion 92a. A joinable annular elastic body 94 is fitted on the outside. By making the support shaft 90 vertically movable by an air cylinder or the like (not shown), the cylinder body 92 configured in this manner can be moved together with the arm 91 pivotally mounted on the support shaft 90. When the cylindrical body 92 is lowered, the projecting portion 92a and the elastic body 94 are moved to the opening holding member 1.
08 is inserted into the inner space of the cylinder body 92 and the opening holding member 10
8 is fitted, and the elastic body 94 comes into close contact with the suction groove 80 to sandwich the packaging material held in the suction groove 80 in the open state. Thereby, the gripping force with the elastic body 94 is added to the suction force of the suction groove 80, and the packaging material can be more strongly held in the open state. Also, as shown in the figure,
By providing the guide member 82 that is curved to have substantially the same shape as the inner shape of the opening holding member 108 below the opening holding member 108, the introduction path of the article into the packaging material is assisted.

As shown in FIGS. 1 to 3 and 12, the packaging material sealing member 110 is provided below the opening holding member 108, that is, on the upstream side with respect to the feeding direction of the packaging material. Thus, the two sealers 13 and 14 are provided in two upper and lower stages with a certain distance therebetween. FIG. 12 shows the sealer 13 on the upper stage side. In the sealer 13, one of the pair of heat-welding members 15 is fixed to the frame 10, and the other is provided so as to be retractable in the horizontal direction from the frame 10. The slide rod 16 is fixed to the tip end side, and the base end side of the slide rod 16 is connected to the cylinder rod of the air cylinder 17.

FIG. 12 shows the case where the sealer 13 is at the maximum protruding position (solid line).
Is contracted, the heat-welding member 15 fixed to the tip end side of the slide rod 16 slides toward the frame 10 (one-dot chain line), whereby it is sandwiched between the pair of heat-welding members 15. The packaging material is pressure welded. Since the sealer 14 on the lower stage side has the same structure, detailed description thereof will be omitted. However, the sealer 14 is also driven by the air cylinder 17, and the two sealers 13 and 14 operate at the same timing.

Although not shown in the figure, the lower side of the heat-welding member 15 of the upper sealer 13 and the lower sealer 1 are not shown.
Cutter blades are provided on the upper side of the heat-welding member 15 of No. 4 respectively, whereby the sealers 13 and 14 press-heat weld the packaging material at two positions above and below, and between the seal parts welded under pressure. The packaging material is cut.

The packaging material sealing member 110 is the frame 1
The pressure-sensitive switch 18 provided near the lower end of 0 is controlled to operate by detecting the packaging material, and the distance between the two sealers 13 and 14 to the pressure-sensitive switch 18 is the packaging material suction member. 103 to the upper sealer 13
Up to a distance substantially equal to
A pressure sensitive switch 18 and a pressure sensitive switch 18 are provided on the frame 10, respectively. As a result, when the packaging material having a hole formed by the perforation member 104 is sent out by the feed roller 102 and the lower end thereof reaches the pressure sensitive switch 18, the hole is formed by the two sealers 13 of the packaging material sealing member 110. As described above, the sealers 13 and 14 are located between the two sealing members, and the sealing materials are pressure-welded at the two upper and lower portions, and the packaging material between the seal portions that are pressure-heat-welded is cut to open the holes. The wrapping material of the sagging part will be cut off.

Further, as shown in FIGS. 1 to 3 and 13, an extruding member 112 is provided below the packaging material sealing member 110 and above the pressure sensitive switch 18. The push-out member 112 has a flat plate 27 fixed to the front end side of a slide rod 26 provided so as to be retractable in the horizontal direction from the frame 10, and the base end side of the slide rod 26 is connected to a cylinder rod of an air cylinder 28. It is a thing.

FIG. 13 shows the case where the pushing member 112 is in the maximum retracted position (solid line), but the air cylinder 28 extends slightly behind the operation of the packaging material sealing member 110, so that the slide rod. A flat plate 27 fixed to the tip end side of 26 projects from the frame 10 (one-dot chain line), and the packaging material sealed and cut by the packaging material sealing member 110 is pushed forward.

The operation of the bag filling apparatus 100 will be described below with reference to FIGS. 14 to 21. Note that, for convenience of description, an air cylinder, a crank mechanism, and the like are omitted in each drawing as appropriate. First, as shown in FIG. 14, the flatly folded packaging material is pulled out from the packaging material roll, inserted into the feed roller 102, and further inserted into the inner space of the opening holding member 108 via the guide rod 25. , The leading end of the packaging material is delivered until it reaches the packaging material sealing member 110. In that state, the packaging material sealing member 110 is operated to seal the front end side of the packaging material, and
The tip side is cut from the sealing portion. This forms one end of the original bag for packaging the article. This operation is necessary to seal the tip side of the packaging material when the packaging material roll is used for the first time, and when the bag is continuously packed, the tip side of the packaging material is already sealed. If it is stopped, there is no need to do it.

Next, as shown in FIG. 15, the packaging material suction member 103 sucks the packaging material so that the outer surface of the flatly folded packaging material is adsorbed to the suction port 30 and the punching assisting member 1 is provided.
06 is rotated to bring the suction cup 62 close to the packaging material suction member 103, and the outer surface of the packaging material on the opposite side attached to the suction port 30 is adsorbed to the suction cup 62. Then, by separating the suction cup 62 from the packaging material suction member 103, the packaging material folded in a plane is in a three-dimensionally opened state. In this state, the punching member 104 (not shown) is moved back and forth to cause the heat rod 42 to project from the entrance 31 of the packaging material suction member 103, so that the heat rod 42 that has generated heat adheres to the packaging material suction member 103. Make a hole by touching. Further, the air supply member 105 is advanced to cause the air nozzle 52 to project from the inlet / outlet port 31 of the packaging material suction member 103, and air is flown into the internal space of the packaging material through the hole. As a result, the inner space of the packaging material is filled with air and the packaging material bulges into a tubular shape, and is inscribed in the opening holding member 108. When the packaging material swells, the air supply member 105 is retracted. Further, after the packaging material swells, it is not necessary to maintain the adsorption of the packaging material by the packaging material suction member 103 and the perforation assisting member 106.

Next, as shown in FIG. 16, the opening forming member 107 is slid to move a predetermined portion of the packaging material immediately above the opening holding member 108, that is, immediately downstream of the feeding direction of the packaging material. Make a notch to leave. FIG. 17 is a partially enlarged perspective view showing the appearance of the packaging material in which the notch is formed.
As shown in the drawing, the nichrome wire 72 of the opening forming member 107
By sliding to the position P, a cut is formed across the tubular packaging material leaving a predetermined portion on the frame 10 side. The position P is set in consideration of the diameter and material of the tubular packaging material, the size of the article to be packed, etc., but the opening becomes smaller if the cut position is smaller than the packaging material diameter. Therefore, the size of the article to be introduced into the internal space of the packaging material is limited, and the opening becomes larger if the cut position is increased, but the portion remaining on the frame 10 side becomes smaller, so that it is possible to prevent gravity during the subsequent operation. Tolerance becomes weak. Therefore, it is preferable to set the position P so as to be, for example, 2/3 to 3/4 with respect to the diameter of the tubular packaging material.

The peripheral edge of the opening of the packaging material in which the notch is formed is sucked into the suction groove 80 of the opening holding member 108. FIG.
FIG. 7 is a partially enlarged cross-sectional view showing the opening holding portion 108 that is sucked by the opening peripheral edge of the packaging material. As shown in the figure, the opening peripheral edge of the packaging material is sucked into the suction groove 80 and bent along the suction groove 80. , Adsorb on its inner wall. As a result, the cut of the packaging material is held in the open state, and the packaging material is held by the opening holding member 108 by the suction force of the suction groove 80 and the frictional force of the opening peripheral edge of the packaging material that adheres to the inner wall of the suction groove 80. Supported by.

Next, as shown in FIG. 19, the tubular body 92 and the opening holding member 108 are overlapped with each other, that is, the tubular body 92 and the opening holding member 108 are substantially coaxial, and the lower end opening of the tubular body 92 is formed. The chute 109 is rotated so that the opening of the packaging material substantially overlaps with the opening. As a result, a portion above the cut of the packaging material, that is, a downstream portion of the packaging material is pushed toward the frame 10 side. In this state, by throwing the article to be bagged from the upper end opening of the tubular body 92, the article is guided by the tubular body 92 to the opening of the packaging material and loaded into the internal space of the packaging material,
The internal space is dropped to the sealing portion at the tip. Since the packaging material is supported by the holding force of the feed roller 102 and the suction force of the opening holding member 108, the packaging material is maintained at the same position even when the article is loaded into the internal space.

Further, as described above, the opening holding member 10
If 8 can be moved up and down in the vertical direction,
As indicated by a chain line 8 in FIG. 8, the tubular body 92 and the opening holding member 108 are fitted by lowering the tubular body 92,
The packaging material held in the open state is held in the suction groove 80. As a result, a clamping force with the tubular body 92 is further applied to the opening peripheral edge of the packaging material, and the packaging material is supported more strongly.

After the required amount of articles are loaded, the chute 1
09 is rotated to remove the cylindrical body 92 from the opening holding member 108, the suction of the opening peripheral edge by the opening holding member 108 is released, and the feed roller 102 is rotated to feed the packaging material into which the article has been put. Thereby, as shown in FIG. 20, the packaging material descends due to the gravity of the article.

When the tip of the packaging material reaches the pressure-sensitive switch 18, the packaging material sealing member 110 is actuated in response to the detection signal, and the sealers 13 and 14 pressure heat weld the packaging material at the two upper and lower positions.
That is, the sealer 14 press-welds and cuts the packaging material on the downstream side of the article put in the packaging material and on the upstream side of the hole formed by the perforation member 104, and the sealer 14
However, the packaging material is pressed and heat-welded and cut at the downstream side of the hole. As a result, the bagging of the article is completed, and the holed portion of the packaging material and the cut portion are cut off.

Finally, the pushing member 112 projects and pushes the bagged article forward to start the next bagging operation. That is, the front end side of the packaging material is sealed, and the steps shown in FIGS. 15 to 21 are repeated. As a result, the articles are continuously packaged using the packaging material roll.

As described above, according to the bag filling apparatus 100,
A desired article can be continuously bagged using a tubular packaging material, and the bagging apparatus 100 according to the present embodiment.
Needless to say, the arrangement of the constituent members may be changed depending on the article to be packed. For example, in the case of packing a long article such as a clothes rod, the distance from the opening holding member 108 to the packaging material sealing member 110 is changed according to the length of the article, and the packaging material is also changed. The feed direction of may be changed from the vertical direction to the horizontal direction.

[0048]

As described above, according to the bagging apparatus of the present invention, the delivery means for delivering the tubular packaging material to a predetermined position and the hole formed in a part of the packaging material through the hole. Packaging material swelling means for supplying air to the inner space of the packaging material; opening forming means provided upstream of the packaging material swelling means for making a radial cut in the packaging material leaving a predetermined portion; The annular opening holding means, which is provided immediately downstream of the material swelling means, in which the packaging material is inserted, sucks the peripheral edge of the cut of the packaging material and holds the cut in an open state, and the article to be packed are A predetermined portion of the tubular packaging material, which comprises an article introducing means for guiding the opening of the packaging material, and a packaging material sealing means for sealing the packaging material on the upstream side and the downstream side of the hole formed in the packaging material. Make a notch in the opening and open it so that the article to be bagged can be put inside the packaging material through the opening. Since, it is possible to perform bagging efficiently continuously article using a tubular packaging material.

Further, according to the present invention, the packaging material swelling means has a suction port for sucking the outer peripheral surface of the packaging material, and a packaging material suction member having a port for perforating and supplying air. A suction pump in communication with the suction port, a rod-shaped perforating member and a tubular air supply member that are provided at the inlet and outlet so as to be retractable, and the outer peripheral surface of the packaging material is sucked, and the packaging material suction member Since the punching auxiliary member is provided so as to be able to move forward and backward, the packaging material folded in a plane can be expanded into a three-dimensional tube shape. Thereby, it is possible to easily form the opening of the packaging material and put the article into the packaging material.

Further, according to the present invention, the opening holding means has the suction groove extending along the inner peripheral edge of the annular member, and the suction groove and the suction pump communicate with each other, so that the structure is simple. The opening of the packaging material can be adsorbed and held by.

Further, according to the present invention, in the packaging material suction member, the inlet / outlet is formed on a surface in contact with the outer peripheral surface of the packaging material,
Since at least two suction ports are formed so as to sandwich the entrance / exit, it is possible to easily pierce and swell the packaging material.

Further, according to the present invention, in the packaging material suction member, the inlet / outlet is formed on the surface in contact with the outer peripheral surface of the packaging material,
It is assumed that the suction port is formed in an annular shape along the outer periphery of the entrance and exit, and the packaging material having a hole is sucked inside the suction port and adheres to the inner peripheral surface, and the suction port is completely covered by the packaging material. Since the sealing is not performed, the packaging material is quickly opened by stopping the suction, and the operation of the bagging device can be further smoothed.

Further, according to the present invention, the article introducing means is a cylindrical member that is provided so as to be fittable with the opening holding means, and is held in the open state by being fitted with the opening holding means. Since the notched peripheral edge of the packaging material is clamped at the fitting site, the clamping force with the article introducing means is added to the suction force of the opening holding means, so that the packaging material can be more strongly held in the open state. it can.

[Brief description of drawings]

FIG. 1 is a front view showing a schematic configuration of a bagging device 100 according to an embodiment of the present invention.

FIG. 2 is a right side view showing the schematic configuration of the bagging device 100 according to the embodiment of the present invention.

FIG. 3 is a left side view showing the schematic configuration of the bagging device 100 according to the embodiment of the present invention.

4 (a) is a front view showing the configuration of the packaging material suction member 103, and FIG. 4 (b) is a sectional view of the packaging material suction member 103 taken along the line AA.

5 is a plan view showing a detailed configuration of a punching member 104 and an air supply member 105. FIG.

FIG. 6 is a plan view showing a detailed configuration of a punching assisting member 106.

7 (a) is a front view showing the configuration of a packaging material suction member 111, and FIG. 7 (b) is a BB sectional view of the packaging material suction member 111.

FIG. 8 is a plan view showing a detailed configuration of the opening forming member 107.

9 (a) is a plan view showing the configuration of the opening holding member 108, and FIG. 9 (b) is a sectional view taken along line CC of the opening holding member 108. FIG.

10 is a plan view showing a detailed configuration of a chute 109. FIG.

FIG. 11 is a cross-sectional view showing a configuration of a cylindrical body 92 fitted with the opening holding member 108.

FIG. 12 is a plan view showing a detailed configuration of the sealer 13.

FIG. 13 is a plan view showing a detailed configuration of an extruding member 112.

FIG. 14 is a schematic diagram for explaining the operation of the bagging device 100 that seals the front end side of the packaging material.

FIG. 15 is a schematic diagram for explaining the operation of the bagging device 100 that swells the packaging material.

FIG. 16 is a schematic diagram for explaining the operation of the bagging device 100 that forms a cut in the packaging material.

FIG. 17 is a partially enlarged perspective view for explaining an opening holding member that holds the notched packaging material in an open state.

18 is a cross-sectional view taken along the line DD of FIG.

FIG. 19 is a schematic diagram for explaining the bagging device 100 into which articles are loaded.

FIG. 20 is a schematic diagram for explaining the operation of the bagging device 100 that seals the packaging material.

FIG. 21 is a schematic diagram for explaining the operation of the bag filling device 100 for pushing out a bag.

FIG. 22 is a schematic diagram for explaining a conventional bagging method using a sheet-shaped packaging material.

FIG. 23 is a schematic diagram for explaining a conventional bagging method using a tubular packaging material.

[Explanation of symbols]

100 bagging device 101 Packaging material roll support member 102 feeding roller (feeding means) 103 Packaging material suction member 104 Perforated member 105 Air supply member 106 Perforation assisting member 107 Aperture forming member 108 aperture holding member 109 chute (article introduction means) 110 Packaging material sealing member 111 Packaging material suction member 30 Suction port 31 doorway 80 suction groove 92 Cylindrical body (cylindrical member)

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Claims (8)

(57) [Claims] 1. An apparatus for bagging desired articles using a tubular packaging material, comprising: a delivery means for delivering the tubular packaging material to a predetermined position; and a hole in a part of the packaging material. Packaging material swelling means for supplying air from the hole to the inner space of the packaging material; and opening forming means provided upstream of the packaging material swelling means for making a radial cut in the packaging material leaving a predetermined portion. An annular opening holding means which is provided immediately downstream of the packaging material swelling means, in which the packaging material is inserted, and which sucks the cut edge of the packaging material and holds the cut portion in an open state, An article introduction means for guiding an article to the opening of the packaging material, and a packaging material sealing means for sealing the packaging material on the upstream side and the downstream side of the hole formed in the packaging material. Bagging device. 2. The packaging material swelling means, a packaging material suction member having a suction port for sucking the outer peripheral surface of the packaging material, a perforation and an inlet / outlet for air supply, and the suction port. A suction pump that is in communication, a rod-shaped perforating member and a tubular air supply member that are provided so as to be retractable at the entrance and exit, and an outer peripheral surface of the packaging material that is suctioned, and is provided so as to be movable back and forth with respect to the packaging material suction member The bagging device according to claim 1, further comprising a perforation assisting member. 3. The opening holding means has a suction groove extending along an inner peripheral edge of an annular member, and the suction groove and the suction pump are communicated with each other. Bagging device. 4. The packaging material suction member is characterized in that the inlet / outlet is formed on a surface in contact with an outer peripheral surface of the packaging material, and at least two or more suction ports are formed so as to sandwich the inlet / outlet. The bagging device according to claim 3. 5. The packaging material suction member is characterized in that the inlet / outlet is formed on a surface in contact with an outer peripheral surface of the packaging material, and the suction port is formed in an annular shape along the outer periphery of the inlet / outlet. The bagging device according to claim 3. 6. The article introducing means is a tubular member that is provided so as to be fittable with the opening holding means, and is a notch in the packaging material held in the open state by fitting with the opening holding means. The bagging device according to any one of claims 1 to 3, wherein the periphery is sandwiched between the fitting portions. 7. A tubular packaging material is inserted through an annular member,
After sealing the packaging material at a predetermined position to form one end of the bag, a hole is made in a part of the packaging material, and air is supplied to the internal space of the packaging material from the hole to expand the packaging material. A step of letting it out and inscribed in the annular member; a step of making a notch in the packaging material to leave a predetermined portion immediately after the annular member and opening the packaging material, and then adsorbing the opening peripheral edge to the annular member; The step of inserting the article to be packed into the opening of the packaging material, the suction of the packaging material by the annular member is released, and the packaging material is pulled out by a predetermined amount, and the downstream side of the article introduced into the packaging material around the opening peripheral edge of the packaging material. Side and upstream of the hole to seal the packaging material to form the other end of the bag. 8. The adsorption member according to claim 7, wherein the opening peripheral edge of the packaging material is adsorbed to the annular member, and then the tubular member is fitted to the annular member so that the opening peripheral edge is sandwiched between the fitting portions. The packing method described in.