JPS649204B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is a packaging machine that automatically handles the work of accommodating various articles in a packaging bag. A series of processes from bag making to packaging that automatically manufactures a bag coated with adhesive, stores the target item in the bag, and then automatically seals one side of the opening.
Concerning improvements that can be made under full automation.

(Prior Art) It is commonly used to commercialize small articles and other desired articles made of various fabrics by storing them in bags made of transparent or semi-transparent plastic film. The bag making machine and packaging machine are manufactured as separate machines. In other words, a separation process is adopted in which a large number of bags produced by a bag-making machine are transported to the packaging machine, one by one is taken out, and the target article is loaded into it. It is also known that automatic packaging machines have been developed and provided.

(Problem to be solved by the invention) As the final process in various integrated production lines aimed at mass production, bagging the product is a simple task, so it should be done as labor-savingly and unmanned as possible. However, in the conventional separation process, the large amount of bags produced by the bag making machine is transported to the packaging machine, which requires a lot of labor for maintenance and management. In addition, there are problems in terms of efficiency, productivity improvement, and cost reduction as it requires manual labor to set the bags in the packaging machine and replenish them. Forming the raw material film into the desired bag shape and immediately moving the resulting bag to the packaging process to bag the desired product eliminates dead stock and has the potential for full automation. However, in conventional bag making machines and packaging machines themselves, for example, in bag making machines, there are problems such as the generation of strange odors when applying adhesive, and low stability and accuracy of bag forming means. In addition to problems in packaging machines, there are also problems in terms of difficulty and instability in accurately and smoothly loading articles, uncertainty in sealing bag openings, and generally slow processing speed.

(Means for Solving the Problems) The present invention solves the above problems, and continuously feeds out a long film material such as a plastic film, folds it into two pieces of different widths, and produces a sealing tongue. By continuously forming a bag body having a piece on one side, placing the target article in the bag body, and sealing the sealing tongue piece to the opening, bagged products can be continuously and automatically sealed. As well as being produced, the structure necessary for both bag making and packaging processes is simplified as much as possible, and accurate and stable bag making and bag filling can be achieved. A film half-folding device and an adhesive coating device are disposed in this order between the moving path of the long film drawn out by the rollers, and the film half-folding device comprises:
A bending member having two bending guide sides connected under an angle α of 90° or more and 180° or less, and a passage gap for the long film between the bending member and the bending member. The connecting angle α between the two bending guide sides is 45° or more and 90° or less, and α>
and a bending rod having a bending guide side forming an angle β in the relationship β; an adhesive coating member disposed corresponding to the protruding side edge of the adhesive coating member, and a drying member for the adhesive coated protruding side edge equipped with a drying heat source; sandwiching the adhesive coated and dried film following the feeding roller; A film fusing device is provided, which comprises a fixed heater for fusing, a film pressing roller that is arranged so as to move forward and backward toward the heater, and a conveyor for grasping and conveying the flossed bag; following the fusing device, the device A conveyor belt for a bag with an adhesive-applied sealing tongue carried out from a gripping conveyor at the open end of the bag, and an article loading position for the bag provided at the end of the conveyance path of the belt. A working conveyor consisting of a regulating stopper, an air suction member for holding the sealing tongue downward on one side of the conveyance path, and an air injection pipe for expanding the opening; An article loading device is provided, comprising a loading conveyor arranged perpendicularly to the article loading position regulating stopper and equipped with an article loading member in correspondence with the article loading position regulating stopper; an inclined article-loaded bag body, which is disposed perpendicularly to one side opposite to the article-loading position and opposite to the article-loading conveyor, and has an upright holding surface for the sealing tongue at its inclined lower end; An unloading path, and a sealing tongue disposed below the unloading path to support the unloading bag and to be able to run forward and backward in a direction perpendicular to the upright holding surface, and one end of the conveyor is elastically supported so as to be movable up and down. A conveyor, a bag body position regulating stopper disposed on the conveyor so as to be movable up and down,
a sealing roller located behind the upright holding surface of the tongue and opposed to the sealing conveyor; and a sealing roller located above the sealing conveyor and capable of moving forward and backward to press the bag on the conveyor. The purpose of the present invention is to provide a tongue sealing device comprising a bag body pressing member and a bag body pressing member.

(Function) According to the above-mentioned technical means of the present invention, as shown in FIG. The device 3 and the adhesive coating device 9 are arranged in this order, and the film half-folding device 3
As shown in FIGS. 2 to 6, a bending member 12 includes two bending guide sides 12a and 12b connected under an angle α of 90° or more and 180° or less; The long film 1 is placed parallel to the bending member 12 with a passing gap 14 therebetween, and passes through the apex of the connection angle α formed by the two bending guide sides 12a and 12b, Said bending guide side 1
2a and 45° or more and 90° or less, and α>β
By comprising a bending rod 13 having a bending guide side 13a forming an angle β having the relationship,
At the bending member 12 and bending rod 13 shown in FIG. 2, the film 1 is unfolded to its full width and pulled out via the guide roller 2 as shown in the first drawing.
As shown in FIGS. 4 and 5, the film 1 is folded back from the front side of the folding member 12 to the front side through the folding guide sides 12a and 12b. 12b, as shown in Fig. 4, at the width L, the guide side 12a is multiplied by the width smaller than 1/2L dimension, and the guide side 12b is multiplied by the width larger than 1/2L dimension. By hanging , the small width part hanging on the guide side 12a is directed vertically downward as shown by the arrow P, and passes through the front side of the bending rod 13 located above the front side of the bending member 12. Fold back to the guide side 12b.
As shown in the direction of arrow Q, fold back horizontally to the left as shown in the figure, and fold the bent rod 1.
3. It passes through the passage gap 14 between the bending members 12, and then folds back vertically downward in the direction of the arrow Q' along the guide side 13a of the bending rod 13, and this folded portion passes from the guide side 12a to the arrow P. It will be located below the narrow part that is folded vertically downward as shown in the direction. Therefore, both folded portions of large and small widths overlap vertically with the fold portion 1b, which has a common passage point of the guide side 13a of the bending rod 13 passing through the vertex of the connection angle α of the guide sides 12a, 12b, as a border. The folded portion 1c has a width l ₂ and the folded portion 1d has a width l ₁ to form a half-folded form with different widths. In this way, the film 1 is folded in half by the half-folding device 3, and the film 1 is folded into half-folded films with different widths.
5, 6, dancer rollers 7, and guide rollers 8, and then sent to the next adhesive application device 9. The adhesive applicator 9 includes an adhesive applicator 16 disposed corresponding to the wide protruding side 1d of the half-folded film 1, and a drying member 19 for the protruding side 1d to which adhesive has been applied, which is equipped with a drying heat source. As shown in FIGS. 7 and 8, the protruding side 1
The adhesive layer 17 is applied onto the film d, and the adhesive layer 17 is completely dried by passing through the drying chamber main body 19a of the drying member 19, and sent to the next film fusing device 10 via the guide roller 18. It turns out. The fusing device 10 includes first, eleventh, twelfth, and thirteenth
As shown in each figure, the film 1 is sandwiched between a fixed heater 23 for fusing, a roller 24 for pressing the film that is disposed so as to be movable toward and away from the heater 23, and conveyors 25 and 26 for transporting the flossed bags. Since the film 1 that has passed through the feeding rollers 22, 22 is pressed by the pressing roller 24 toward the fixed heater 23 for fusing, the film 1 is transferred to the transport conveyor as individual bags 1a in the width direction. 25 and 26, it is pulled out downward. That is, folded parts 1c and 1d of different widths, with the half-folded fold part 1b as the bottom and the two cut and welded cut and welded parts as both sides, become both the front and back sides of the bag, and the folded part 1d of wide width The bag body 1a, in which the protruding side edge coated with the adhesive layer 17 is provided at the bag opening as a sealing tongue, is sequentially and automatically manufactured and sent to the next article loading device 11 side. It is. As shown in FIG. 1 and FIGS. 14 and 15, the article loading device 11 includes conveyor belts 36, 37 for the bag 1a,
A stopper 42 for regulating the loading position of the bag body 1 provided at the end of the conveyance path 7, an air suction member 45 for holding the sealing tongue downward on one side of the conveyance path, and an air jet for expanding the opening. A working conveyor 30 composed of a pipe 54 and a working conveyor 3
Since the loading conveyor 31 is disposed perpendicularly to one side of 0 and is provided with an article loading member 51 in correspondence with the regulating stopper 42, the unloading ends of the gripping and unloading conveyors 25 and 26 The bag 1a that has fallen onto the working conveyor 30 is transported by the conveyor belts 36 and 37, and is stopped when the side 40 of the bag 1a is supported by the stopper 42, and the bag 1a is stopped. The vicinity of the opening is sucked by the suction member 43, and the sealing tongue is sucked by the suction member 4.
5 is adsorbed onto the downwardly inclined surface 45a and becomes a hanging shape, and further, the opening is reliably shaped and expanded through air injection from the air injection pipe 54, and is conveyed by the charging conveyor 31. The article 55 is smoothly and quickly loaded into the bag 1a through the opening by the rotation of the rotary loading pieces 51, 51, which are article loading members. Thus, the article 55 is the bag body 1a.
When the bag 1a is inserted into the container, the suction of the bag is released and air is again injected from the air injection pipe 54, so that the bag 1a crosses the conveyor belt 37 orthogonally and seals the next tongue piece. It will be delivered to an inclined delivery path 56 belonging to the device 56. As shown in FIGS. 17 to 23, the tongue sealing device 56 is a slanted sealer 56 for sealing the bag 1a loaded with articles and having an upright holding surface 57b for the sealing tongue of the bag 1a at the lower end of the slant. a conveyance path 57, and an upright holding surface 5 disposed below the conveyance path 57 to support the conveyance bag body 1a;
A tongue sealing conveyor 58 is provided to be able to run forward and backward in the orthogonal direction, and one end of the conveyor is elastically supported so as to be movable up and down; and a bag position regulating stopper 71 disposed on the conveyor 58 so as to be movable up and down; a sealing roller 5 located behind the upright holding surface 57b of the sealing tongue and facing the sealing conveyor 58;
9 and a bag pressing member 60 which is located above the sealing conveyor 58 and is capable of pressing forward and backward toward the bag 1a on the conveyor, as shown in FIG. , the bag body 1a that slid down the slope 57a of the slope carry-out path 57 and fell from the bottom 39 onto the sealing conveyor 58
8, the bottom part 39 hits and stops against the stopper 71 that has been raised in advance, and the sealing tongue piece 41 that has finally slipped down is suction-held along the front surface of the upright holding surface 57b. stand up (21st, 2nd
2 and 23), the sealing conveyor 58 is reversed, and the bag pressing member 60, which has been retracted upward, is advanced and lowered toward the top surface of the bag 1a, and as shown in FIG. The member 60 is supported on the upper surface of the opening of the bag body 1a and moves in the same direction as the conveyor 58 reverses, so that the pressing member 60
The front end of the sealing tongue 41 hits the lower part of the sealing tongue 41 and enters below the upright holding surface 57b of the inclined unloading path 57 with a tongue passing gap, and its final position is as shown in FIG. The tongue piece 41 is conveyor 58
As the erecting holding surface 57b rotates in reverse, the erecting holding surface 57b, which is rotatably provided behind the erecting holding surface 57b, lies down on the upper surface of the opening of the bag body 1a through the gap between the lower end of the erecting holding surface 57b and the front end of the pressing member 60. The weight of the bag 1a containing the article 55 is guided between the rotating peripheral surface of the sealing roller 59 and the upper surface of the conveyor 58, and the driven roller 67 side of the conveyor 58 is elastically supported by a spring 69 so as to be able to move up and down. , and as this weight moves to the driven roller side, one end of the ball support (driven roller side) of the conveyor 58 is lowered to an inclined position,
On the other hand, the tongue piece 41 is connected to the sealing roller 59 and the conveyor 58.
When entering and passing through with an opening between
The adhesive layer 17 on the tongue piece 41 is pressed onto the upper surface of the opening, and the opening can be easily and automatically sealed by the tongue piece 41. After sealing, the conveyor 58 is rotated normally again, and the bag pressing member 60 By retracting the sealed bag 1a upward, the sealed bag 1a is discharged as a product from the other end of the anti-bullet support side of the conveyor 58. In other words, the entire process from bag making to packaging is completed. It can be efficiently processed through a series of automated steps.

(Embodiments) Suitable embodiments of the automatic packaging machine according to the present invention will be sequentially explained with reference to FIGS. 1 to 23.

FIG. 1 shows a part of a film half-folding device, an adhesive coating device, a film fusing device, and an article loading device according to the present invention. 2
The film is sent to a film half-folding device 3, where it is folded in two, and then sent to an adhesive application device 9 via a moving path formed by guide rollers 4, 5, 6, a dancer roller 7, and a guide roller 8. An adhesive such as a pressure-sensitive adhesive is applied to a predetermined position of the film 1 and dried, and then the film 1 exits the device 9.
is sent to the film fusing device 10, where the half-folded film is cut by fusing in the width direction for each predetermined size, so that the folded part of the two-fold is the bottom, the fusing part is the both sides, and the adhesive is applied. A bag body with an opening portion provided with a sealing tongue piece is obtained, and the bag body 1a is
is transferred from the fusing device 10 to the next article loading device 11, where the target article is loaded into the bag 1a. The film half-folding device 3 has a structure as illustrated in FIGS. 2 to 6, and in FIG. 2, reference numeral 12 denotes a folding member; 1 each side
It is a pentagonal plate body consisting of 2a, 12b, 12c, 12d, and 12e or a pentagonal frame shape as shown by the chain line, and the upper two adjacent sides 12
a and 12b are bent guide sides 12a and 12b whose ends are connected at an angle α, and both guide sides 12
Vertical side 12 parallel to each other end of a, 12b
c and 12d are connected, and the lower ends of the side sides 12c and 12d are connected by the orthogonal base 12e, forming a pentagon, and in this case, the angle α at the connecting corner of the bending guide sides 12a and 12b is 90°≦α. <180°.
Further, the member 12 is made immovable by appropriately fixing one vertical side 12c. Reference numeral 13 denotes a bending rod, and the bending rod 13 is a strip plate or a rod body placed parallel to the bending member 12 with a gap 14 through which the film 1 described above can pass. ,
In the positional relationship with the bending member 12, the bending rod 13
One longitudinal side 13a of the bending member 12 passes through the vertex of the connecting corner forming the angle α between the bending guide sides 12a and 12b, and forms a specific angle β with one bending guide side 12b. The angle β is said to be 90°, but in relation to the angle α mentioned above, angle α > angle β
The angle α in the example shown is 135°.

The one shown in FIG. 3 shows one of the other embodiments of the half-folding device, and in this embodiment, the angle α and the angle β are changed from those of the embodiment in FIG. 2. and the connection angle α of the pair of bending guide sides 12a, 12b in the bending member 12 is 90°,
The side sides 12c, 12d and the base 12e are similar, and when passing the bending guide side 13a of the bending rod 13 through the vertex of the connection angle of the angle α, the angle β formed with one bending guide side 12b is They are crossed at an angle of 45 degrees, and the passage gap 14 for the film 1 is similarly provided. Angle α is 90゜≦α＜180゜, angle β is
The range of 45°≦β≦90° is preferable, and under the condition of α>β, a half-folded film can be obtained which is folded into different widths.

The film 1 is folded in half by the above-described half-folding device 3 in the following manner. That is, in the bending member 12 and bending rod 13 shown in the embodiment in FIG.
As shown in the figure, the film 1 which has passed through the guide roller 2 and is drawn out to its full width is the fourth,
As shown in FIG. 5, the folding member 12 is folded from the back side to the front side through the folding guide sides 12a, 12b, and at this time, the entire width of the film 1 in the width direction is folded to the pair of folding guide sides 12a, 12b. When folding the film along the
In the width L, the bending guide side 12a has 1/2
Multiply the width of the dimension smaller than the L dimension, and multiply the bending guide side 12b by the width of the dimension larger than 1/2L dimension.
By multiplying 2a and 12b by widths of different sizes and folding them back, a half-folded form with different widths, wide and narrow, can be obtained, as will be described later. In other words, when turning back,
The narrow width portion extending over the bending guide side 12a is directed vertically downward as shown by arrow P, and passes through the front side of the bending rod 13 located above the front side of the bending member 12. In contrast, the large part of the bending guide side 12b is folded back laterally to the left in the figure as shown in the arrow Q direction, and passed through the passage gap 14 between the bending rod 13 and the bending member 12. Then, it is further folded downward along the bending guide side 13a of the bending rod 13 perpendicularly to the direction of the arrow Q'. Therefore, this folded part is located below the narrow width part which is folded vertically downward from the bending guide side 12a in the direction of arrow P, and both the large and small folded parts are located on the bending guide side 1.
2a, 12b, which pass through the apex of the connecting corner forming the angle α, have a common folding point _1b of the bending guide side 13a of the bending rod 13. The paper is folded in half in a half-folded manner by the part 1c and the folded part _1d of the width l1. FIG. 5 shows the folded state.

Further, according to the half-folding device 3 shown in FIG.
As shown in the half-folded state in the figure, when hanging the film 1 of width L from the back side on the symmetrical bending guide sides 12a and 12b of the bending member 12, fold the part of the small width _l2 . The part with a width l ₁ hanging on the guide side 12b is hung on the bending guide side 12a, and the part with a width l ₁ hanging on one bending guide side 12a is folded back to the front side of the same member 12. Fold sideways to the right in the figure as shown by the arrow X in the figure, and then
The part of the narrow width l ₂ extending over the bending rod 13 is folded back to the left in the figure as indicated by arrow Y and along the front side of the bending member 12, and passed through the passage gap 14 with the bending rod 13. From the bending guide side 13a, it is reversed as shown by arrow Y' and folded back to the right in the figure, that is, in the same direction as the arrow X direction. , the fold part 1b
Through this, a half-folded type with different widths, narrow and narrow, is obtained, with ₂ small width parts and ₁ wide part. In any of the embodiments, a continuous long film 1 is sequentially folded into two halves of wide, narrow, and different widths by the half-folding device 3 of the present invention, and is carried out from the same device 3 as shown in FIG. The adhesive is sent to the next adhesive applicator 9 via the guide rollers 4, 5, 6, dancer rollers 7, and guide rollers 8, and the folded part _1d having a wide width l1 is turned into a folded part _1c having a small width l2. Adhesive will be applied to the side edges that protrude from the sides.

The adhesive applicator 9 according to the present invention has a structure as illustrated in FIG. 1 and FIGS. 7, 8, 9, and 10. In other words, in FIG. A fixing plate 15 for supporting the film and an adhesive applying member 16 are disposed in correspondence with each other. At this time, the half-folded film 1 is sent in a half-folded position, with the wide folded part 1d at the bottom and the narrow folded part 1c at the top, as shown in FIGS. The fixing plate 15 and the adhesive application member 16 are placed opposite to each other across both surfaces of the protruding side of the large folded portion 1d, and the applying member is placed on the front side of the protruding side that moves while being supported by the fixing plate 15. 16 come into contact with each other, so that the adhesive layer 17 is applied in a band-like manner as shown in FIGS. 7 and 8. It is appropriate to use a pressure-sensitive adhesive as the adhesive, but as the adhesive application member 16 is not shown, as is known, for example, an adhesive liquid in a liquefied pressure-sensitive adhesive tank can be used. is transferred to a grooved coating roll via a transfer roll, and the grooved coating roll supported by a movable arm or the like is brought into contact with the front side of the protruding side of the folded portion 1d, so that the coating is automatically applied. .
A pair of guide rollers 18, 18 are disposed at appropriate intervals in the horizontal direction directly above the fixing plate 15 and the adhesive application member 16.
18, an adhesive layer 1 applied to the protruding side edges;
A drying member 19 that performs drying of step 7 is provided. 20 shown in FIGS. 7 and 8 is the film 1.
This is a sensing mark attached in advance to one side of the folded portion 1c having a small width, and the mark 20 is used to cut the film at regular intervals in a film fusing device to be described later. Further, numeral 21 indicates a detection member such as a phototube arranged correspondingly. The structure of the drying member 19 is shown in FIGS. 9 and 10.
As illustrated in the figure, the guide rollers 18, 18 are constructed in the form of a bridge so as not to hinder the rotation of both rollers 18, and the protruding side of the folded portion 1d to which the adhesive layer 17 is applied It consists of a substantially channel-shaped drying chamber main body 19a that covers and closes most of the sides, and a hot air blowing pipe 19b for supplying drying hot air between the drying chamber main bodies 19a, and the main body 19a has a cross-sectional shape as shown in FIG. 10. A slit 19c is formed on one side of the bottom for supporting and passing the protruding side to which the adhesive layer 17 is applied, and guide rollers 18,1
The ends located on the circumferential surface of the rolls 8 are each shaped like a gate with a lower opening along the circumferential surface of the roll, one end (on the film exit side) is inserted with the hot air blowing pipe 19b, and the other end is opened. An opening 19d serving as a hot air outlet is provided at the end. Therefore, the half-folded film 1, on which the adhesive layer 17 is applied on the protruding side of the folded portion 1d by the adhesive application member 16, passes through the guide roller 18 on the inlet side and then passes through the guide roller 18 on the outlet side. During the process, only the protruding sides of the drying member 19 pass through the main body 19a of the drying chamber, and the adhesive layer 17 is completely dried by receiving hot air from the hot air blowing pipe 19b while being isolated from the outside. The film is then passed through a guide roller 18 on the exit side and sent to the next film fusing device 10, where it becomes a completely shaped individual bag.

The film fusing device 10 according to the present invention includes a first
11, 12, and 13, that is, the guide roller 18 on the exit side
A pair of film feeding rollers 22, 22 are disposed next to the rollers 22, 22, and a fixed fusing heater 23 is disposed opposite to the rollers 22, 22 at corresponding positions sandwiching the half-folded film 1 from both sides. A film extrusion roller 24 is provided to move toward and away from the heater 23, and conveyors 25 and 26 for gripping and discharging bags are placed next to the heater 23 and roller 24 and are also openable and closable with the film 1 in between. It consists of. The pair of film feed-out rollers 22, 22 are used to move the film 1 as described above, that is, the film 1 wound into a roll is held and pulled out by the rotation of the feed-out rollers 22, 22. The film half-folding device 3 and the adhesive coating device 9 are moved through the film. Melting heater 2
3 is installed in a fixed and immovable manner at the fusing position,
As is known in the art, the heater 23 includes an energizing heating element 23a made of nichrome wire or the like, and a lead wire 23 for the heater.
b. Temperature sensor 23c sensor lead wire 23d
is attached, and a film pressing roller 2 is attached to it.
4 is connected to the rod 27a of the air cylinder 27, as shown in FIGS.
Film 1
can be pressed toward the fusing heater 23. At this time, the guide shaft 2 provided at both ends of the roller 24
4a, 24a are slidably engaged with the straight guides 28, 28, and the conveyor 2 for gripping and carrying out
Reference numerals 5 and 26 indicate the bag body 1 which has been cut by the melt-cutting heater 23 and the film pressing roller 24.
25a, 26a, driven roller 25b,
The belt conveyor is stretched between 26b and 26b so as to be able to circulate freely.One conveyor 25 and the other conveyor 26 have the drive roller 26a as a fulcrum and the driven roller 26b swing as shown in FIG. The piston rod 29a of the air cylinder 29 is connected to the shaft of the driven roller 26b so that the piston rod 29a of the air cylinder 29 can move.
One end of the conveyor on the b side can be opened and closed with respect to the conveyor 25, thereby gripping one end of the melted bag 1a, and moving the bag 1a downward by the rotation of the conveyors 25 and 26. It was designed to be sent out. Therefore, the half-folded film 1 coming out of the adhesive applicator 9 enters the fusing device 10 by the feed rollers 22, 22, and the narrow folded portion of the film 1 described above in FIGS. 7 and 8 is formed. The sensing mark 20 provided on
1, the feeding roller 2
2 and 22 to stop the film 1, and at the same time, the film pressing roller 24 moves forward toward the fusing heater 23 as shown in FIG. It will be melted down. By repeating the above-mentioned operation for each sensing mark 20, the continuous long half-folded film 1 is cut by melting every fixed size, that is, two pieces are melted and welded with the folded part 1b of the half-folded shape as the bottom. The large and small folded parts 1c and 1d with the fusing part as both sides become both the front and back sides of the bag, and the protruding side on which the adhesive layer 17 is provided in the wide folded part 1d serves as a sealing tongue for the bag. The bag body 1a provided in the opening is automatically produced one after another, and is passed through the article loading device 1, a part of which is shown in FIG.
It is sent to the first side.

The article loading device 11 according to the present invention has a structure as illustrated in FIG. 1 and FIGS. conveyor 30 and conveyor 3
It consists of both a charging conveyor 31 for transferring and charging the target article into the bag 1a on the top of the bag 1a, and its details are shown in FIGS. 14, 15, and 16. That's right. That is, the work conveyor 3
0, intermediate rolls 34 and 35 are arranged between the driving roll 32 and the driven roll 33, and the roll 3
2 and 34 and between the rolls 34 and 33, a plurality of narrow belts 3 are installed in the longitudinal direction and width direction.
By stretching the belts 6 and 37 so that they can circulate through the rotation of each roll, a series of conveyor surfaces is constructed, and each belt 36 group and belt 37
Support plates 38, 38 for moving the bags 1a stably and accurately are provided on the lower surface of the conveying surface of the group, and the bags 1a are placed on the conveyor 30 in the attitude shown in FIG. 14, following the belts 36, 37. 3.
Reference numeral 9 indicates the bottom of the bag body 1a formed by the folded portion 1b mentioned above, 40 and 40 indicate both sides formed by the previously mentioned fusing portion, and the folded portions 1c and 1d form the front and back surfaces of the bag. The protruding side edge of the folded portion 1d on which the adhesive layer 17 is applied becomes the sealing tongue piece 41, and the sealing tongue piece 41 shown in the figure is made to protrude to the outside of one of the belts 36, 37 in a horizontal direction. It will be sent under the attitude. On the conveyor surface of the belt 37 group at the front end of the bag body 1a in the transport direction, a plurality of guide plates 38a are provided at the front end of the support plate 38 for smoothly transferring the bag body 1a from the belt group 36 to the belt 37 group. belt 36
The support plate 38 is provided protruding toward the group side.
A stopper 42 is erected at the rear end to support one side 40 of the advancing bag 1a and to regulate the position for loading articles. The outermost belt provided at a position corresponding to the back surface in the vicinity of the opening provided with the tongue piece 41 described above is a perforated belt 37a that is stretched between the intermediate roll 35 and the driven roll 33 so that it can circulate. As shown in FIG. 15, a suction member 43 is disposed together with an air suction pipe 44 on the back surface of the support plate 38 at a position corresponding to the conveying surface of the perforated belt 37a, so that the material can be easily transported at the article loading position. This allows the vicinity of the opening of the bag 1a to be held in place by suction. Furthermore, as shown in FIGS. 14 and 15, on the outside of the support plate 38, corresponding to the bag suction structure using the perforated belt 37a and the suction member 43,
The suction members 45 of the sealing tongue piece 41 of the bag body 1a are arranged in parallel. The upper surface of the suction member 45 is a downwardly inclined surface 45a that supports the sealing tongue piece 41, and the same inclined surface 4 is provided below this inclined surface 45a.
The bag 1a is provided with an air chamber 45c having a downwardly inclined air injection slit 45b parallel to the bag 5a, and an air supply pipe 45d. The purpose is to widen the opening and facilitate loading of articles.

As illustrated in FIG. 14, the target article loading conveyor 31 is disposed in a direction perpendicular to the conveyor 30, corresponding to the article loading position in the group of belts 37 on the working conveyor 30. That is, the conveyor 46 for feeding articles is placed at the same level as the conveying surface by the group of belts 37, and the conveyor 46 is connected to the guide walls 4 on both sides.
7 and 47, and between the conveyance end of this conveyor 46 and the suction member 70, an article transfer table 48 is fixedly interposed below the same level, and both sides of the transfer table 48 in the article advancing direction The rotating cylinders 49, 49, the rotating arms 50, 50 connected to the cylinders 49, 49, and the rotating charging piece 5 that is rotatable in a horizontal plane by the arms 50, 50.
This device is equipped with an article loading mechanism according to No. 1,51. Further, as shown in FIG. 16, above the article loading position of the conveyor 30 by the transfer table 48 and the group of belts 37, there is a bag 1 at the article loading position.
An air guide plate 52 facing the bag surface connected to the opening of a is disposed together with an upwardly inclined guide portion 52a via a support member 53, and in front of the guide portion 52a, also via a support member 53.
Air injection pipe 5 directed toward the opening of the bag 1a
4 is provided to actively expand the opening of the bag 1a. In this figure, reference numeral 55 indicates an article, and in FIG. 14, reference numeral 57 indicates an inclined delivery path in the tongue sealing device 56 according to the present invention, which will be described in FIGS. At the article loading position, it is disposed at a corresponding position opposite to the article loading conveyor 46 and perpendicular to the conveyor 30. According to the article loading device 11 of the present invention, the article 55 is loaded into the bag 1a formed by the film fusing device 10 in the following manner. That is, from the delivery end of the gripping and delivery conveyors 25 and 26 in the device 10, the device 11
On the belt 36 group of the working conveyor 30, the first
4 Bag body 1a dropped and transferred in the posture shown in the figure
moves from above belt 36 group to above belt 37 group,
The front side 40 of the bag 1a in the direction of movement is the support plate 38.
The bag body 1a is supported and stopped by a stopper 42, and the back surface near the opening of the bag body 1a is located on the perforated belt 37a, and the sealing tongue piece is supported on the downwardly inclined surface 45a of the suction member 45. Become. At this point, by starting suction by the suction member 43 on the perforated belt 37a side, the back surface near the opening of the bag body 1a is suctioned, and at the same time, the suction member 70 supporting the sealing tongue piece 41 closes the air supply pipe. By supplying pressurized air into the air chamber 45c through the air chamber 45d and jetting it downward from the air jet slit 45b, the sealing tongue 41 is suctioned through negative pressure as shown in FIG. It hangs down along the upper surface and front side of the member 70, retreats from the opening of the bag 1a, and opens the opening. Furthermore, as shown in FIG. 16, pressurized air is injected from the air injection pipe 54 toward the opening of the bag 1a, so that the opening of the bag is expanded and the bag 1a is filled with air. The entire structure is opened via the guide plate 52, and a space for accommodating articles is maintained. In this way, the article loading posture on the side of the bag body 1a is adjusted, while on the side of the loading conveyor 31 provided facing the loading position, the article 55 is carried by the feeding conveyor 46, and 4
8 and the rotating cylinder 49,
49, the article 55 on the table is moved to a pair of rotating loading pieces 51, 5 via rotating arms 50, 50.
1, the rear end of the article 55 is pushed and the article 55 is smoothly and easily inserted into the bag 1a through the widened opening. Thus article 5
5 is inserted into the bag body 1a, the suction member 43,
70 is released, the bag body 1a is moved perpendicularly across the group of belts 37 by the air injection from the air injection pipe 54 again, and is moved to the inclined delivery path 56 belonging to the next tongue sealing device 56. It is then carried out and sealed with the sealing tongue piece 41 by the device 56.

The tongue sealing device 56 according to the present invention has a structure as illustrated in FIG. 17 to FIG. These include the above-mentioned inclined carry-out path 57, a sealing conveyor 58 disposed directly below the carry-out passage 57 so as to be able to forward and reverse the sealing conveyor 58, and a sealing conveyor 58 disposed above the conveyor 58 and behind the inclined carry-out passage 57. bag pressing member 6 arranged above the conveyor 58 and the inclined conveyance path 57.
0. That is, the inclined carry-out path 57
is an inclined surface 57a on which the bag body 1a can slide down toward the sealing conveyor 58 from the opposite side of the work conveyor 30 in the article loading device 11 described above from the article loading position by the belt 37 group; Same slope 5
It consists of an upright holding surface 57b at the lower end of the conveyor 58, which is perpendicular to the conveying surface of the conveyor 58. An air feed path 61 is provided inside, and air feed pipes 62, 62 are connected to both ends so that pressurized air can be freely fed.
A jet nozzle 63 is opened on the front surface of the central position of the holding surface 57b of No. 1, and jet slits 64,
A retaining plate 65 with openings 64 is attached,
As a result, the suction negative pressure of the air ejected from the ejection slits 64, 64 slides down the inclined surface 57a, and finally the sealing tongue piece 41 located in front of the upright holding surface 57b is moved to the 21st, 22nd As shown in the figure, the tongue piece 41 is maintained in an upright position with respect to the bag body 1a by suction and holding.

The sealing conveyor 58 that receives the bags 1a from the inclined carry-out path 57 is composed of a group of plural belts 68 stretched between a driving roller 66 and a driven roller 67 so as to be able to rotate. The roller 66 is provided at a fixed position so as to be rotatable in forward and reverse directions, and is driven by a forward and reverse rotation mechanism using, for example, a known reversible motor as a prime mover, although not shown in the figure. Both ends of the roller shaft on the driven roller 67 side are elastically supported so as to be raised and lowered by a spring 69 issued from a fixed member, and the roller 67 itself can be rotated forward and backward. Also, a conveyor 58 is provided on this driven roller 67 side.
A stopper 70 is provided for regulating the horizontal position. Further, the inclined unloading section 57 of the conveyor 58
A stopper 71 for regulating the position of the bag 1a is placed at an intermediate position forward of the
A detection member 73 such as a phototube is provided above the stopper 71, and a phototube or the like of the bag 1a is provided behind the sealing roller 59. A detection member 74 according to the above is provided.

As shown in FIG. 20, the bag pressing member 60 disposed above the inclined discharge path 57 and the sealing conveyor 58 has a length equal to or longer than the full width of the bag 1a. The link 76 is in the form of an approximately L-shaped or dogleg-shaped plate, and one end of the link 76 is pivoted to the fixed member side by a pin shaft 75 on the upper back side of the member 60. The other end of the link 76 is pivoted via a pin shaft 77. A piston rod 80 of an air cylinder 79 is connected to the front surface of the upper end, and one end of the air cylinder 79 is pivotally supported by a pin shaft 78 on the fixed member side. Therefore, when the rod 80 of the air cylinder 79 is moved backward as shown in FIG.
When the rod 80 is moved forward as shown in FIG. 18, the bag pressing member 60 moves downward and approaches the sealing tongue 41 of the bag 1a through the rotation of the link 76. It supports the upper surface of the bag opening and assists the sealing operation of the tongue piece 41.

The sealing of the sealing tongue 41 of the bag 1a in the tongue sealing device 56 and the removal of the sealed bag 1a are performed in the following manner. 1st
FIG. 7 shows the state in which the bag body 1a is carried out to the device 56. The bag body 1a, which has slid down the slope 57a of the inclined carry-out path 57 and fallen from the bottom 39 onto the sealing conveyor 58, is Belt 68 is arrow R
Due to the normal rotation in the direction, the bottom part 39 of the stopper 71 for regulating the position is raised and placed in advance.
The sealing tongue 41 that has been stopped by impact and slid down at the end of the bag body 1a comes into contact with the upright holding surface 57b at the lower end of the inclined unloading path 57, and the sealing tongue 41 that has been stopped by the impact and has slipped down at the end of the bag body 1a is in contact with the upright holding surface 57b at the lower end of the inclined unloading path 57, and also receives air through the air supply pipe 62 on the holding surface 57b. Feeding path 6
By supplying pressurized air to the air outlet 63 and ejecting it from the injection slits 66 and 64, the suction negative pressure causes the air to be suctioned and held on the front surface of the upright holding surface 57b and shaped into an upright position (21st, 22nd, At the same time, the stopper 71 hits the bottom 39 of the bag 1a, and the detecting member 73 detects this, causing the belt 68 to rotate in the direction indicated by the arrow S in the figure.
The bag pressing member 60, which has been retracted upward, is moved forward by the rod 80 driven by the air cylinder 79, and the bag 1a on the belt 68 is moved forward by the rotation of the link 76. It will be moved forward and downward toward the top surface. Next, as shown in FIG. 18, the pressing member 60 is brought into contact with the upper surface near the opening of the bag 1a through the advancement of the rod 80, and is moved in the same direction as the belt 68 is reversed. The front end of the sealing tongue 60 hits the lower part of the sealing tongue 41 which is held upright as shown in the figure.
It enters below the upright holding surface 57b in the inclined carry-out path 57 with a tongue passing gap, and its final position is as shown in FIG. Therefore, as the suction on the upright holding surface 57b is released and the belt 68 advances in reverse, the tongue piece 41 collapses onto the upper surface of the opening of the bag body 1a through the gap between the lower end of the upright holding surface 57b and the front end of the pressing member 60. At the same time, between the rotating peripheral surface of the sealing roller 59 rotatably provided behind the upright holding surface 57b and the upper surface of the belt 68,
It will be guided through the running of the belt 68. As mentioned earlier, since the driven roller 67 side of the belt 68 is elastically supported by the spring 69 so as to be able to rise and fall freely, the article 5 that is placed on the belt 68
Due to the weight of the 5-pack bag 1a and the movement of the bag 1a toward the driven roller 67, the belt 68 moves from the horizontal position shown in FIG. 17 to the driven roller 67 side resisting the spring 69 as shown in FIG. It then descends into a tilted position. Therefore, when the tongue piece 41 in the prone shape enters between the roller 59 and the belt 68 via the pressing member 60 as described above, the tongue piece 41 When entering and passing through the opening of the bag body 1a, the adhesive layer 1 is suitably pressed between the circumferential surface of the sealing roller 59 and the belt 68, which rotates while remaining at a fixed position.
With 7 as the bottom surface, it is completely expanded and adhered to the top surface of the opening without wrinkles, deviations, or gaps,
As shown in the sealing completion position shown in FIG. 19, the tongue piece 4
1 can automatically seal the opening of the bag 1a. In the state shown in FIG. 19, the detection member 74 detects the tip of the sealing portion of the bag 1a, so that the belt 68, which is running in the reverse direction in the direction of the arrow S, is returned to the normal rotation position in the direction of the arrow R. Turn around, insert the stopper 71 below the belt 68,
By retracting the bag pressing member 60 to the position shown in FIG. 17 by retracting the rod 80 in the air cylinder 79 and rotating the link 76, the sealed bag 1a is pressed against the drive roller as the belt 68 rotates normally. It is conveyed to the 66 side and discharged as a product from the end of the belt 68.

(Effects of the Invention) According to the present invention, the film half-folding device 3, the adhesive coating device 9, the film fusing device 10, the article loading device 11, and the tongue sealing device 56 are arranged in sequence as described above.
With this structure, a continuous long plastic film 1 is divided into two parts having different widths, narrow and wide, in the longitudinal direction and in the width direction.
Fold the film in half to form a series of bags, apply adhesive on the protruding side of the wide folded part, dry it, and then cut the half-folded film to a fixed size in the width direction. By doing this, individual bags with sealing tongues are manufactured, and after automatically loading the target articles into each bag, the openings are sealed with the sealing tongues, and the target articles are sealed. This method has a great advantage in that it is possible to produce products in packaging bags filled with the same with high efficiency and labor savings using a single machine configuration.

That is, as can be clearly inferred from the explanation of the structure and operation of each device 3, 9, 10, 11, and 56, according to the present invention, the plastic film 1 wound in a roll is turned into a strip. By feeding the film 1 into the unfolded state into the film half-folding device 3, the film 1 is folded into two by the folding member 12 and the bending rod 13 into a wide folded part 1c and a narrow folded part 1d from the folded part 1b. semi-folded film 1
This allows the protruding sides of the wide folded portion 1d to be used later as the tongue piece 41 for sealing the bag. By feeding the film 1 that has exited the half-folding device 3 into the next adhesive applicator 9, the adhesive applicator 1 is
Application of the strip-shaped adhesive layer 17 by step 6, and immediately after application of the adhesive layer 17, the drying member 19 is sealed and sealed.
By passing the adhesive through the interior, adhesive treatment can be easily performed without producing any strange or offensive odors, and there is no problem with subsequent work processing. Further, by feeding the half-folded film 1 that has come out of this device 9 into the film fusing device 10, the film is cut by a fixed fusing heater 23 and a movable film pressing roller 24 that can move toward and away from the heater 23. Accordingly, the half-folded film 1 can be cut by fusing in the width direction, whereby the fold part 1b becomes the bottom part 39, and the pair of fusing parts become the bottom part 39.
0.40, and using the protruding side with the adhesive layer 17 as the sealing tongue 41, the open bag body 1a can be obtained very quickly and easily in three steps using the devices 3, 9, and 10. Become. Furthermore, in the present invention, when performing the fusing, the fusing heater 23 is fixed and immovable;
On the other hand, in order to contact and fuse the film 1 by moving the film pressing roller 24 back and forth, the heater 23 is moved back and forth toward the film 1 to cut the film 1. The heater lead wire 23b and the sensor lead wire 23d are bent and vibrated repeatedly due to frequent reciprocation, so that stable and reliable fusing can be performed over a long period of time without frequently causing wire breakage or failure to conduct electricity. Due to the tension of the film and the linear support by the roller circumferential surface, the fusing line is not distorted or other troubles are caused, and the bag is finished well. In the present invention, each bag body 1a that has come out of the film fusing device 10 is immediately sent to an article loading device 11 having a working conveyor 30 and an article loading conveyor 31, thereby producing a bag body 1a. The articles 55 can be loaded continuously without any time loss, and bags manufactured using a separate conventional bag-making machine are transported to a packaging machine, and one thin bag of this type is made. This eliminates the loss in the process of picking up items from a destination and loading them into them, and enables efficient continuous work as assembly line work. In this loading operation 11 as well, suction fixation near the opening of the bag body 1a at the article loading position and sealing tongue piece 41 are performed.
By retracting the air guide plate 5 downward, the opening of the air guide plate 5 is expanded and the inside of the bag is expanded and shaped through air injection.
2, and the target article 55 to be fed from the charging conveyor 31 is transported very smoothly and without stagnation through the intervention of the transfer table 48 and the rotary loading pieces 51, 51 on the same table. Charging can be carried out at the next speed and in a straight state without fear of getting caught or diagonally charged, and by appropriately designing the lengths of the working conveyor 30 and the charging conveyor 31, the pieces can be moved one after another. This makes it possible to load articles 55 into a large number of bags 1a without difficulty. Further, by directly connecting and connecting the tongue sealing device 56 to the opposite side of the article loading position of the article loading device 11, the sealing tongue 41 of the bag 1a loaded with the article 55 is sealed. This makes it possible to immediately turn it into a final packaged product. In the tongue piece sealing device 56 of the present invention, the upright holding surface 57b on the inclined discharge path 57, the sealing conveyor 58 which can freely rotate in forward and reverse directions and whose one end is elastically supported, and the sealing conveyor 58 which faces the conveyor 58 and is in a fixed position. A rotatable sealing roller 59, a pressing member 60 for the bag 1a located on the conveyor 58
By interlocking with each installation and combination, the sealing tongue 41, which is easily oscillated and deformed, is held upright in advance, the pressing member 60 applies pre-expanding pressure and shaping of the portion of the bag body 1a where the tongue 41 is attached, and the sealing roller 59 and spring 6
The bag body 1a is placed between the belt 68 supported by the belt 9
The opening and the tongue piece 41 are introduced as the tongue piece 41 is laid down, and the opening and the tongue piece 41 are tensioned without loosening, and the tongue piece 41 is passed under elastic clamping, thereby preventing the sealing tongue piece 41 from wrinkling or shifting. , without fear of blistering, etc.
The package can be completely expanded and sealed to finish the opening and be sealed with a good appearance, and completed packaged products can be produced one after another through the forward and reverse transport of the conveyor 58. According to the present invention, the entire mechanical equipment is made up of five parts, ie, mounting parts 3, 9, 10, 11, and 56, and the work process is summarized into only five steps, one stroke for each device, so it is compact and requires no work. The machine of the present invention can function as an economical and efficient automatic product packaging machine that requires significantly less manpower. It is a continuous and consistent flow work without waiting or dead stock, and the necessary mechanisms in each device are relatively simple.
Since the movement of each device is less complicated, there is less risk of failure, and automatic control is easy, making it highly versatile as an automatic packaging machine for small items that are relatively small, regardless of the type of product. Yes, and it is excellent. In particular, the present invention is more compact than conventional devices using triangular plates, requires no extra space, and can be easily incorporated into the overall device.

Furthermore, since the present invention places the articles in the bag while adsorbing the adhesive tongue of the bag, there is no need for protective tape to protect the adhesive as in the past, which improves efficiency and streamlines the process. Ru.

[Brief explanation of the drawing]

Fig. 1 is an explanatory view of the overall layout of the packaging machine embodiment of the present invention, from the half-folding device to part of the article loading device;
3 is a plan view including some side surfaces of the embodiment of the half-folding device, FIG. 4 is an explanatory diagram of the half-folded state by the device shown in FIG. 2, FIG. 5 is a plan view of the half-folding film, and FIG. Fig. 3 is a plan view of a half-folded film using the device, Fig. 7 is a front view of main parts of an embodiment of the adhesive application device, Fig. 8 is a partial perspective view showing the adhesive application state, and Fig. 9 is a drying member of the same. Fig. 10 is a side sectional view of the main part, Fig. 11 is a side view of the film fusing device, Fig. 12 is an explanatory diagram of the operation of the main part, and Fig. 13 is the main part. FIG. 14 is a slope view of the main part of the article loading device, FIG. 15 is a side sectional view of the main part of the bag fixing device,
Fig. 16 is a side view of the opening and opening of the bag and the main parts for loading articles; Figs. 17, 18, and 19 are side views showing various operating states of the tongue sealing device; Fig. 20. 21 is a slope view of the main part of the sealing tongue upright holding surface of the device, FIG. 22 is a sectional view taken along the line B-B in FIG. 21, and FIG. Figure A-
It is an A-line sectional view. DESCRIPTION OF SYMBOLS 1... Plastic film, 3... Half folding device, 9... Adhesive application device, 10... Film fusing device, 11... Article loading device, 56... Tongue sealing device, 12... Bending member , 13...bent rod, 1
6... Adhesive application member, 19... Drying member, 22
... Feeding roller, 23 ... Melting heater, 24 ...
...Roller for pressing film, 25, 26... Conveyor for gripping and unloading, 30... Conveyor for work, 31...
...Charging conveyor, 1a...Bag body, 39...Bottom, 40...Side sides, 41...Sealing tongue piece, 42...
...Position regulating stopper, 43,70...Suction member,
57... Inclined carry-out path, 57b... Upright holding surface, 5
8... Sealing conveyor, 59... Sealing roller,
60... Bag pressing member, 69... Spring, 55...
Goods.

Claims (1)

[Claims] 1. A film half-folding device and an adhesive coating device are disposed in this order between the moving path of the long film drawn out by a feeding roller to the roller, and the film half-folding device has an angle of 90° or more and 180° or less. a bending member having two bending guide sides connected under an angle α, and a bending member which is opposed to each other in parallel with a passage gap for the long film between the bending member and the two bending guide sides. A bend that passes through the apex of the connection angle α formed by the two bending guide sides and forms an angle β between it and one of the bending guide sides, which is between 45° and 90° and has a relationship of α>β. a bending rod having a guide edge; the adhesive applicator applies an adhesive to the protruding side edge of the wide side of the film folded in two with different widths by the film half-folding device; Consisting of an application member and a drying member on the protruding side to which adhesive has been applied and which is equipped with a drying heat source; following the feeding roller, the film is moved forward and backward toward a fixed heater for fusing and cutting, sandwiching the adhesive-coated and dried film. A film fusing device is provided, which includes a film pressing roller and a conveyor for gripping and conveying the cut bag body, which are arranged so as to be able to come into contact with each other, and a conveyor for gripping and conveying the bag body after being melted; A conveyor belt for the bag body with the adhesive-applied sealing tongue disposed at the opening end, a stopper for regulating the loading position of the bag body provided at the end of the conveyance path of the belt, and a stopper provided on one side of the conveyance path. a working conveyor comprising an air suction member for holding the sealing tongue downward and an air injection pipe for expanding the opening; and a working conveyor arranged perpendicularly to the one side of the working conveyor and at the article loading position. An article charging device comprising a charging conveyor equipped with an article charging member in correspondence with a regulating stopper is provided; an inclined carry-out path for bags loaded with articles, which is disposed perpendicularly on one side opposite to the bag conveyor, and has an upright holding surface for the sealing tongue at the lower end thereof; a tongue-sealing conveyor that supports the carrying-out bag body and is provided so as to be able to run forward and backward in a direction perpendicular to the upright holding surface, and one end of the conveyor is elastically supported so as to be movable up and down; a bag body position regulating stopper, a sealing roller located behind the upright holding surface of the tongue piece and opposed to the sealing conveyor, and a bag body positioning stopper located above the sealing conveyor and positioned on the bag body on the conveyor. 1. An automatic packaging machine characterized by being provided with a tongue sealing device comprising a bag pressing member which is provided so as to be able to press forward and backward.