JPH11348944A - Folded-bag group, bag-folding method, folded-bag-group packaging method, superimposed-bag-group folding device, and folded-bag-group folding/packing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To take out bags one by one from an outer bag and prevent a group of remaining bags from being disarranged, by folding the bags into two while kept superimposed one on the other, and further, by folding them into three so that their discontinuous cuts for the formation of cords are positioned inside their openings. SOLUTION: A group B4 of bags folded in six is compactly held together, and because handles 12 are not positioned outside and the outside is therefore smooth, which makes it easy to insert them into an outer bag PO. In addition, in the insertion of them, it is also easy to insert them so that the creases 13 along which they are folded in two are positioned on the side of the discontinuous cuts 72 or opening 73 of the outer bag PO. Such a package body P has a good appearance and showing because such parts as the handles 12 are folded inside, and even when the package bodies P are arranged in a stack, each inside group B4 of bags folded in six isn't almost disarranged at all. The package body P enables a user to pull out only one bag from the outer bag PO by opening the opening 73, inserting the user's fingers into it, grasping only the crease 13 of the outermost layer of the group B4 of bags, and pulling it out. The group of remaining bags is kept in the outer bag PO and they are not spread loosely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a group of bags made of a thermoplastic synthetic resin film which are folded back with several take-out or garbage bags, a method and apparatus for folding the bags, and a package for the folded bags. Method and apparatus.

[0002]

2. Description of the Related Art Conventionally, a bag group of this type is folded into four or eight while being stacked and packed in an outer bag. However, four-folding is too large, which is inconvenient when displaying at a store or storing at home. Further, in the case of eight-fold, it is difficult to take out one bag at a time from the folded bag group from the packaged outer bag. There is a possibility that the bag group cannot be arranged. In the case of a bag having the above-mentioned shape, since a discontinuous cut or a handle is formed in the opening for taking the product home or for dust, the opening is generally formed with one third of the width of the bag. A tongue piece of about 1/6 is formed, and once the bag is disturbed, re-ordering requires a great deal of trouble, and is generally left untidy.

[0003] Further, in order that the folding bags packaged in the outer bag can be taken out one by one, a bag of each one is first folded in three, and then several of these are stacked and folded in two to be packaged in the outer bag. This is known from Japanese Patent Publication No. 5-63369. However, this method has to fold each bag one by one, which is troublesome.
It was necessary to operate the folding device one cycle per sheet, and the operation mechanism became complicated, so that quick operation became difficult, and the work efficiency was not improved as a whole. In particular, the bags having the above-mentioned plaques and the like are formed by stacking 10 or 20 to 50 sheets and punching them all at once to form the plaques. Is not realistic, and the number of work steps increases unnecessarily, leading to an increase in cost, which is not practical.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks of the conventional package, and does not make the package too large. The bags can be taken out one by one through the opening of the outer bag,
It is to provide the market with a package in which the posture of the remaining bags is not disturbed in the outer bag, and also to simplify the method of folding the bags and the method of packing, and the device for performing these methods, To provide the market with a method and apparatus with improved work efficiency.

[0005]

In order to solve the above-mentioned problems, in a specific invention, each bag is a bottom-sealed type thermoplastic film bag, and the opening is formed with discontinuous cuts for forming a tie string. The bags are formed in a stack, and the bags are stacked and creased in the transverse direction so as to be folded in two. Further, the discontinuous cuts for forming the cords and the portions of the hands are inside the opening. A folding bag group characterized by being folded in three as described above.

In order to solve the above-mentioned problem, the method of the related invention is a bottom-sealed type thermoplastic film bag having discontinuous cuts or nipples for forming a cord at the opening. A first step in which a bag group formed by stacking a plurality of bags is creased in the transverse direction and folded into two. The central portion of the thin plate is placed on a thin plate receiving base having a width approximately equal to 1/3 of the width of the bag group and supported by a cantilever at the base, with the discontinuous cut or the part with the hand on the lower side. A second step of lifting the cradle and pressing the upper surface of the group of folded bags; The two sides of the folded bag group hanging from both sides of the thin plate holder,
And a third step of sequentially folding the sheet receiving base underneath the sheet receiving plate into three parts, and folding the sheet sheet as a whole into six parts. Finally, the fourth step of extracting the bag group folded in six from the thin plate receiving tray in the free end direction. By the first to fourth steps, a bag group folded in six is obtained. A method of folding a group of stacked bags will be used.

In order to solve the above-mentioned problem, the method of the related invention is a bottom-sealed type thermoplastic film bag, in which discontinuous cuts or nipples for forming a cord are formed at the opening. A first step in which a bag group formed by stacking a plurality of bags is creased in the transverse direction and folded into two. The center portion of the bag group is placed on a receiving stand having a width of about 1/3 of the width of the bag group with the discontinuous cut or the part with the handle facing upward. The second step of pressing the upper surface of the folded bag group. A third step of sequentially folding the two-folded bag group portions protruding from both sides of the receiving table and the thin-plate holding plate onto the thin-plate holding plate to make three-fold and six-fold portions as a whole. Finally, a fourth step of extracting the bag group folded in six in the free end direction from the thin plate holding plate. According to the first to fourth steps, a bag group folded in six is obtained.

In order to solve the above-mentioned problem, a method of a related invention is characterized in that, in a later step of the invention according to claim 2 or 3, the outer bag for packaging the outer bag has a bottom edge and one side edge in advance. A U-shaped discontinuous break that can be separated from one edge of
2. The method according to claim 1, wherein one of the openings formed by the non-welded portion is provided, and the opening is formed through the opening of the outer bag.
Closing the folded bag group so that the transverse fold is on one side of one of the discontinuous break unwelding openings, and sealing the opening of the outer bag after insertion into the outer bag. The method for folding and packing the stacked bag group is a feature.

In order to solve the above-mentioned problems, a related device invention is a bottom-sealed type thermoplastic film bag, in which discontinuous cuts or grips for forming a cord are formed at the opening. A two-folding device that folds a bag group in which a plurality of bags are stacked in the transverse direction into two, a three-folding device that further folds the folded bag group into three, and the three-folding device from the two-folding device.
Transport means for transporting the folded bag group to the folding device with the fold first and the opening half of the bag group downward;
And a carry-out means for carrying out the six-fold bag group from the folding device, wherein the three-fold device is provided at the center of the two-fold bag group.
A thin plate receiving base supported by a cantilever at a base supporting a 幅 width portion, fixed tables are provided on both sides of the base, and a bag group folded in two can be supplied above the thin plate receiving base. A holding member for holding the folded bag group at the standby position at an interval is provided downwardly and resiliently on the machine frame, and each time the bag group is supplied thereon, the thin plate receiver is provided. The table is raised above the level of the fixed table, and the holding member is pushed up, and the folded bag group is clamped by the thin plate receiving table and the holding member. Both ends of the folded bag group are provided so as to be able to ascend to a height sufficient to hang down from both sides of the thin plate cradle. On both sides of the sheet tray on the slightly lower frame A pair of folding plates, the upper edges of which are pivotally attached to the attached pivots, are provided on the machine frame. The pair of folding plates move from the vertical position after the thin plate receiving plate reaches the ascending position. It is to sequentially rotate in a horizontal posture below the table, and after the folded bag group is carried out from this thin plate receiving table, it returns to the original position, and the pair of folding plates After returning to the original position, the thin plate receiving table is returned to the same height as the fixed table and the flat table.

In order to solve the above-mentioned problems, a related device invention is a bottom-sealed type thermoplastic film bag having discontinuous cuts or grips for forming a tie string at an opening. A folding device that folds a bag group formed by stacking a plurality of bags into two in the transverse direction, and further divides the folded bag group into three.
A three-fold device for folding, a bag group folded into two by the three-fold device from the two-fold device, with the fold at the top,
Conveying means for conveying with the opening half of the bag group down,
It is provided with an unloading means for unloading the six-fold bag group from the three-fold device, and the three-fold device includes a receiving table supported by a machine frame that supports the center of the two-folded bag group and a base that presses the receiving table surface above the receiving table. Equipped with a thin plate holding plate that can hold 1/3 of the width of the cantilevered bag group, a pair of horizontal folding plates on both sides of the cradle, and the cradle is flush with the folding plate from above and below. , It is provided on the aircraft frame flexibly,
The thin plate holding plate is lowered from the upper standby position, and the cradle is pressed down to fold the bag group folded in half below the folding plate in a state where the foldable bag group is sandwiched between the cradle and the thin plate pressing portion plate. Both ends of the bag group are provided so as to be able to descend to a position sufficient to be folded on the thin plate, and the pair of horizontal folding plates are sequentially placed at the position where the thin plate is lowered. After the folded bag group is carried out from this thin holding plate,
The pair of horizontal folding plates return to the original position, and after returning to the original position of the pair of folding plates, the thin plate pressing plate returns to the upper standby position. A bag group folding device.

According to another aspect of the present invention, there is provided a packaging apparatus provided on a carry-out side of the apparatus according to the fifth or sixth aspect of the present invention. An outer bag group for packaging the putted bag group can be set, and each of the outer bag groups is provided with a U-shaped discontinuous break which can be separated from one of the bottom edge and one of the side edges in advance. A bag is inserted through the opening of the outer bag so that the six-folded bag group is inserted such that the transverse fold is on the side having the U-shaped discontinuous cut. A folding packaging apparatus for a group of stacked bags characterized by being provided.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 An embodiment of the apparatus according to the fifth and seventh aspects of the present invention, which is shown in FIGS. 3 to 8, wherein the apparatus is operated by operating the apparatus. And a method according to claim 3. The outline is shown in FIG.
First, as the bag group B, several other (10, 20,..., 100) bag groups B of the bottom seal 11 type made of a thermoplastic synthetic resin film are stacked, and the normal hand 12 or It is mainly intended for those provided with discontinuous cuts 14 (hereinafter simply referred to as a handle, etc.) on which a knot can be formed later. As the apparatus, a two-folding apparatus 20 for folding the bag group B in the transverse direction from the upstream side, and first transporting means 30 and 3 comprising a pair of clamping type conveyors for feeding this to the next three-folding apparatus 40. A second conveying means 55 for carrying out the six-fold bag group from the folding device 40 and a packaging device are provided.

The folding device 20 is a generally known folding device, and a central portion of a horizontal first table plate 21 is provided with a bag group B in a transverse direction of the supplied bag group.
Is folded in two, and a slit 22 that can pass therethrough is provided. Above this slit 22, a vertical folding plate 23 for folding in two is inserted into the slit 22 from the upper standby position and returns to the original position again, and is vertically movable. Each time the bag group B is supplied to the first table board 21 by the air cylinder device 24,
Cycle operation.

Below the first table plate 21, there is provided a first conveying means 30 comprising a pair of clamping type conveyors, and a carry-in portion 31 thereof is aligned with a position directly below the position of the slit 12. The one transport means 30 is bent at a right angle on the way, and the folded bag group B2 is sent out from the unloading section 32 to the next three-folding device 40 in a posture in which the handle 11 and the like are positioned on the lower side. It is made to be.

The tri-folding device 40 is provided with the transport means 30
In accordance with the height of the carry-out portion 32, a thin plate receiving base 41 cantilevered at the base 42 on the upstream side is provided so as to be vertically movable with respect to the machine frame 60. It is moved up and down. On both sides of the thin plate receiving base 41, a pair of second tables 44 fixed to the machine frame 60 are provided.
It is provided flush with the pair of second tables 44. The width of the thin plate receiving base 41 is approximately 1/3 of the width of the bag group B.

A holding member 45 is provided above the thin plate receiving base 41 at a standby position at an interval in which the folded bag group B2 can be inserted. It is provided on the machine frame 60. In the illustrated example, the holding member 45 is positioned at the standby position by a pair of tension springs 46. A compression spring may be used instead of the tension spring 46 (see FIG. 4). Therefore, the thin plate receiving base 41 is
When it is raised by the air cylinder device 42, it hits the holding member 45, and further rises together, and is provided so as to be movable to the raised position. On both sides of the raised position, a pair of folding plates 47 are provided on both sides of the thin plate receiving base 41, and the pair of folding plates 47 are provided outside the thin plate receiving base 41 while the thin plate receiving base 41 is in the raised position. From the position, the bag group B (actually, the folded bag group B4) is carried out from the thin plate receiving base 41, and then returns to the original position.

In the embodiment of FIGS. 3, 5 to 7, the folding plate 47 is provided on both sides of the raised position of the sheet receiving base 41 by a pivot 48 along both sides of the sheet receiving base. , And moved by a reciprocating rotation from a vertical position outside the thin plate receiving base 41 to a horizontal position along the lower side of the thin plate receiving base 41. The embodiment of the present invention includes a plate 47 in which the height is slightly inconsistent with a horizontal posture in advance, and the plate 47 moves horizontally sequentially between the lower side and the outer position of the thin plate receiving base 41. The reciprocating movement of the pair of folding plates 47 is performed by third and fourth air cylinder devices 49 and 50 mounted on the machine frame 60, respectively.

Reference numeral 55 denotes a second conveying means for carrying out the bag group B4 folded in six when the thin plate receiving base 41 is at the raised position, and moves in the longitudinal direction of the thin plate receiving base 41. A grip 57 having a pair of claws from above and below is provided on the body 56. There is no particular limitation on the horizontal reciprocating drive means of the moving body 56.
As shown in FIG. 7, a reversible rotary motor 59 may be connected exclusively to the sprocket gear of the endless chain mechanism 58. Escape notches 51 and 52 which do not contact the grip 57 are provided at the downstream edges of the thin plate receiving base 41 and the pair of folding plates 47, respectively. The second transport means 55 transports the folded bag group B4 to the packaging device 70 (see FIG. 9).

The packaging device 70 is not particularly limited.
A large number of outer bags P are stacked and supported, and the uppermost outer bag P is impregnated with the blowing air, and the six-folded bag group B is slid into the outer bag P or the shallow trough-shaped cradle 71. The bag group B4 is placed (see FIG. 2), the square gutter and the bag group B4 are wrapped in a tubular shape with a collective thermoplastic wrap film band, and the opened three sides are heat-sealed to form a package P on the outer bag.
May be used.

Operation of the First Embodiment The operation of the first embodiment will be described together with the operation of the first embodiment. The bag group B is loaded above the first table 21 from a bag making machine (not shown) on the upstream side with the bottom seal 11 at the head. At this time, the bag is supplied so that the middle point of the length L of the bag group B exactly matches the position of the slit 22.

Next, as a first step, the first air cylinder device 24 is operated to lower the vertical folding plate 23, and the bag groups B on the first table 21 are sequentially pushed into the slits 22, and the reference numeral B1 in FIG. When the bag group B1 is pushed into the carry-in portion 31 of the first transport means 30 with the transverse fold 13 at the top while the state shown in FIG.

In the second step, the bag group B1 is
The pair of conveyors 33, which are zero, completely forms a folded bag group B2, which is from a vertical position to a horizontal position, and a portion such as the handbag 12 is located on the lower side, and the carry-out portion 32 is provided.
Is sent out to the tri-folding device 40. At this time, the center of the folded bag group B2 is placed on the center of the thin plate receiving base 41, and both sides thereof are placed on the second table 44.

Next, the thin plate receiving base 41 is lifted by the second air cylinder device 43 and held by the pressing member 45, and the folded bag group B2 is formed by the thin plate receiving base 41 and the pressing member 45. Are clamped at the center, and the center is fixed to them.

As a third step, the thin plate receiving table 41 is
The two-fold bag group B2 further rises from both sides to a height sufficient to hang both sides. Actually, it is up to the position where the stopper 51 integrated with the holding member 45 hits the machine frame 60.

Next, the folding plate 47 on one side is moved by the third air cylinder device 49 from the vertical position to the position below the thin plate receiving base 41 and becomes parallel to the thin plate receiving base 41, and is a kind of movement around the pivot 48. The thin plate receiving table 41 is rotated
The side part B3 of the bag group B2 which hangs down from below is folded.

Next, similarly, the fourth air cylinder device 50 on the opposite side operates, and the side portion B3 of the bag group B2 hanging on the opposite side.
Is folded under the thin plate receiving base 41, and the bag group B is made into a six-fold bag group B4. Next, the fourth step and the second transporting means 55
Is operated, and the tip of the group of six-fold bags is held by the grip 58 from above and below.

At this time, since the notch portions 51 and 52 are provided in the thin plate receiving base 41 and the pair of folding plates 47, when the grip 57 holds the six-fold bag group B4,
The thin plate receiving base 41 and the pair of folding plates 47 are not clamped. Thus, the six-fold bag group B4 is supplied to the packaging device 70 and sealed. At this time, the outer bag P0 is packaged so that the fold 13 in the transverse direction of the bag group B4 coincides with the opening 72 formed by the discontinuous cut for forming the opening provided in the outer bag P0. This is an embodiment of the device according to claim 7, and this method is an embodiment of the method according to claim 4. The opening 72 is U-shaped from one side edge of the outer bag P0.
It may be provided in the shape of a letter, or may be a linear discontinuous cut along its edge, or the unsealed opening 73 itself does not change at all as the present invention (see FIG. 14). It is included in the embodiment according to claim 7.

Second Embodiment An apparatus according to the sixth and seventh aspects of the present invention, which is described in FIGS. 10 to 13, is operated by operating this apparatus. The outline of the implementation of the described method is shown in FIG. Embodiment 1
Is substantially the same as above, but is a bag group B2 folded in two.
This is a method of folding in two, such as the above-mentioned handbag 11, which is upside down from the first embodiment, and also folding it upward when folding three. Therefore, the structure of the device for that is slightly different from that of the first embodiment.

In the folding apparatus 20, a horizontal guide plate 21a parallel to the first table 21 is provided on the left and right sides of the first table 21. The horizontal guide plate 21a also has the same position as the slit 22. Is provided with a second slit 22a.

Unlike the first embodiment, the vertical folding plate 23 is provided below the first table 21 so that the bag group B
Each time it is supplied onto the table 21, it is pushed up from the slit 22 by the first air cylinder device 24 and pushed up into the second slit 22a of the upper horizontal guide plate 21a.

The first transport means 30a is provided on the horizontal guide plate 21a in a vertically symmetric manner with the horizontal line as the symmetrical line from the first embodiment. Therefore, the loading section 31a of the first transport means 30 is vertically downward and the loading section 32a
Are open horizontally in the downstream direction (see FIG. 10).

On the unloading side of the unloading section 31a of the first transport means 30, a three-folding device 40a is provided. In the three-folding device 40, a receiving stand 45a is provided at the center, and folding plates 47a are horizontally provided on both sides thereof. The receiving stand 45a is provided so as to be vertically movable with respect to the machine frame 60, and the folding plate 47 is always operated by the spring 46.
a, 47b are resiliently urged upward from the bottom to the same height level.

A second air cylinder device supported above the receiving stand 45a by a cantilever plate 42a supported by a machine frame 60, is a cantilever plate 41a having a width approximately 1/3 of the width of the bag group B. It is provided on the machine frame 60 so as to be able to move up and down via 43. In the standby position, the thin plate holding plate 41a is slightly separated from the surface of the receiving table 45a, and is provided with a sufficient interval between them so that the two-fold bag group B2 is supplied from the table 1 transporting means 30a. (See FIGS. 10 and 11).
The thin plate presser plate 41a is lowered by the second air cylinder device 43, abuts against the receiving table 45a, and further presses them down against the resilient force of the spring 46, so as to be lower than the level of the folding plates 47a, 47b on both sides. Is also pushed down to the lower position (see FIG. 12).

At a position below the thin plate pressing plate 41a, the pair of folding plates 47a and 47b are connected to the thin plate pressing plate 41a.
The third and fourth air cylinders 49 and 50 are connected to each other so as to be able to sequentially move upward from a position outside a.

It is preferable that the pair of folding plates 47a and 47b are provided in the machine frame 60 in advance with a relatively small step (bag group B × 2 thickness) in the vertical direction. As shown, one of the folding plates 47b and the third
(Or fourth) the machine frame 6 so that the air cylinder 50 can be moved up and down.
0, when receiving the two-fold bag group B2, both are flush with the receiving table 45 (see FIG. 11), and when folding the bag group B2 into three, the fifth air cylinder device 51 is provided with a step. Some can be moved up and down by
2, see FIG. 13), which is included in the embodiment of the present invention. Otherwise, the second transporting means 55 and the packaging device 70 are the same as in the first embodiment.

Operation of the Second Embodiment There is substantially no difference from the first embodiment. The only difference is that, in the first step, the two-folding device 20 does not fold the bag group B into a U-shape but folds the bag group B into an inverted U-shape (corresponding to the method of claim 3).
Therefore, in the second step and the third step, the two-fold bag group B
2 are folded by the folding plate 44 to form a thin plate holding plate 41a.
Is folded in three on the upper side. In other words, in the second step, the part such as the handbag 12 is turned up
The folding bag group includes a receiving table 45a and folding plates 4 on both sides thereof.
4 is placed almost horizontally.

Next, as a second step, the thin plate presser plate 41a is lowered from above by the second air cylinder device, presses the central part of the folded bag group B2 on the receiving table 45a, and is further lowered as it is. The upper thin plate holding plate 41a is lowered and stopped sufficiently to fold the two-fold bag group B2 into three by the folding plates 47a and 47b.

Next, as a third step, the third air cylinder device 49 is operated and the folding plate 47a is moved to the thin plate pressing plate 4.
When moved to 1a, the portion B3 protruding from the thin plate holding plate 41a on one side of the two-fold bag B2 is folded onto the thin plate holding plate 41a. Similarly, the opposite air cylinder device 50
Is also moved to move the folding plate 47b to the upper side of the folding plate 47a on the opposite side, and the portion B3 of the bag group B2 protruding from the thin plate holding plate 41a is folded as a six-fold bag group B4. . The fourth step and the subsequent supply to the packaging device 70 and the packaging step are the same as those in the first embodiment, and thus description thereof will be omitted.

Embodiment 3 This is an embodiment of the specific invention according to the first aspect, and
The folded bag group B4 is enclosed in an outer bag, and is shown in the code package P of FIGS. 1, 2, 9 and 14. The method invention according to claims 2 and 3 is a method invention for manufacturing the inside folding bag group B4, and the method invention according to claim 4 is a method invention for enclosing the six-fold bag group B4 in the outer bag P0. Claims 5 and 6 are device inventions for manufacturing the folded bag group B4, and the invention of claim 7 is a device invention for enclosing in the outer bag P0. The transverse fold 13 portion of the six-folded bag group B4 is along one side edge of the outer bag P0. At one side edge P2, as shown in FIG. 1, a discontinuous cut is cut straight into the opening 73 cut into a discontinuous cut 72 in a U-shape or inside the seal portion of the outer bag P0. There is a form in which the opening 73 (see FIG. 1) or the sealing part 74 is partly separated in advance and the opening 73 is provided therein (see FIG. 14). The size of these openings 73 is about 1 of the length L1 of one side of the outer bag P0.
/ 2 to 3/4 is preferred.

Operation of Embodiment 3 The above-mentioned six-folded bag group B4 is already compactly packed, and the outside is smooth from the handle 12 or the like on the outside, so that it can be easily inserted into the outer bag P0. . When inserting, the two folds 13 correspond to the discontinuous cuts 72 of the outer bag P0.
Also, it is easy to insert it so as to be on the opening 73 side. In such a package P, since the portion such as the handbag 12 is folded inward, even if the packages P are stacked in a good appearance and appearance, the internal six-fold bag group B4 is less likely to be disturbed and is easy to handle as a product. . The package P is
The opening 73 is opened, and the user inserts his / her finger into the opening 73 to open the bag group B.
When only the fold 13 of the outermost bag of the bag 4 is gripped and pulled out, only one bag is pulled out from the outer bag P0, and the remaining bag group stays in the outer bag P0 and is not scattered.

[0041]

In the six-fold bag group according to the first aspect of the present invention, since the handle is folded inward, the outside is smooth, there is no fluttering hand, and the bag can be sealed in the outer bag. It can be easily inserted and even after being enclosed in an outer bag,
A package that can be taken out of the outer bag one by one without disturbing the inside of the outer bag without disturbing the inside of the outer bag, and by locating the folded fold on the opening side of the bag without scattering the remaining bags. Can be. Of course, even if this bag group is stored as it is in an appropriate drawer of furniture in the kitchen, the bags can be taken out one by one from the outer bag, and the remaining bag groups do not become cluttered.

Since the method according to the second aspect of the present invention has the above-described structure, the folded bag group is supported only by the thin plate support, and is lifted by pressing it from above, and both side portions have their own weights. When folded in the third step, it is easy to bend, and after folding in six, the parts such as the handbag are folded inward. Therefore, when sent to the packaging process in the subsequent step, the six-fold state is maintained. Stable and easy to handle. In addition, since multiple bags are folded while being stacked, the number of steps required to fold each bag is eliminated, and the folding operation itself is difficult due to the unstable handbag and other parts of each bag. The object is stable and easy to fold even at the hand part.

According to the method of the third aspect, when the bag group folded in two is further folded in three, it is folded upward, so that the operation is slightly different from that of the second aspect. As a result, the same folded state can be obtained simply by turning upside down as in the first embodiment. In addition, the number of steps of folding for each bag can be reduced, and the folding operation itself is easy as in the second aspect.

In the method according to the fourth aspect, after the method according to the second or third aspect, it is packaged in an outer bag.
The packaging bag according to the seventh aspect of the present invention is stable in the folded state and is convenient to handle thereafter. Further, in the state of being packaged in the outer bag, even if the inner bag is made of a transparent film of the outer bag, the outer bag is not seen through the outer surface, so that a package with good appearance and less collapse of the load can be obtained.

According to the fifth aspect of the present invention, the method of the second aspect can be implemented. In particular, by placing the folded bag group on the thin plate holder and lifting the thin plate holder, the center of the folded bag group is pressed by the pressing member, and both sides hang down from the thin plate holder by their own weights, and are folded. It becomes easier, and by the movement of the later folding board,
It is surely folded in six, and this is folded by the second transport means.
If the thin plate receiving tray is pulled out in the free end direction, the part with the handbag or the like is located inside, so that a group of six-fold bags that are well formed and hard to disturb can be obtained.

In the apparatus according to the sixth aspect, by driving the apparatus, the method according to the third aspect can be carried out, and after placing the folded bag group on the receiving table and the folding plates on both sides thereof. The folding can be started by pushing down the bag group together with the holding pedestal to a level slightly lower than the level of the pair of folding plates with the thin plate holding plate cantilevered at the base, thereby shortening the stroke of the receiving plate and the thin plate holding member. Also, the driving means can be downsized, and the device can be stabilized because of the short stroke, and the operation cycle can be shortened. Further, the pair of left and right folding plates for receiving the two-fold bag group also serve as the fixed table according to claim 5, and the size of the entire apparatus is reduced. In addition, there is an effect that a six-fold bag group having the same form as that of the device invention of claim 5 is obtained.

In the apparatus according to the seventh aspect, the post-process of the apparatus according to the fifth or sixth aspect of the present invention is performed.
Since it is connected to the packaging device, the six-fold bag group is directly packaged, and the edge along the fold in the transverse direction of the bag group is formed as a heat sealer having an opening. 2. The package according to claim 1, wherein the folds of the bag group in the transverse direction are along the opening of the outer bag.

[Brief description of the drawings]

FIG. 1 is a perspective view of a bag group showing steps of the method according to claim 2;

FIG. 2 is a perspective view of a bag group showing steps of the method according to the second embodiment.

FIG. 3 is a partial perspective view of the first embodiment.

FIG. 4 is a principle mechanism side view showing the mechanism of the first embodiment.

FIG. 5 is a front view of the mechanism in which a thin plate receiving portion of the tri-folding device is in a standby position.

FIG. 6 is a view showing a state in which the thin plate holder of the tri-folding device section is in a raised position;
It is a mechanism front view during folding in three.

FIG. 7 is a mechanism front view of the tri-folding device in a tri-fold completed state.

FIG. 8 is a side view showing the relationship between the second transfer means and the packaging device.

FIG. 9 is a perspective view showing a state in which a group of six-fold bags is packaged in an outer bag.

FIG. 10 is a side view of the principle mechanism of the second embodiment.

FIG. 11 is a mechanism front view of the tri-folding device according to the second embodiment.

FIG. 12 is a mechanism front view of the tri-folding device according to the second embodiment during tri-folding;

FIG. 13 is a mechanism front view of the tri-folding device after the tri-folding of the second embodiment is completed.

FIG. 14 is a perspective view of one embodiment of the embodiment in which a bag group folded in six is enclosed in an outer bag.

[Explanation of symbols]

 B bag group B2 folded bag group B4 folded bag group P0 outer bag P1 package 11 bottom seal 12 handle 13 transverse fold 20 two-folding device 21 first table 21a horizontal guide plate 22 slit 22a first 2 slit 23 vertical folding plate 24 first air cylinder device 30 first transport means 31 carry-in part 32 carry-out part 33 three-folding device 41 thin plate receiving base 41a thin plate holding plate 42 base 43 second air cylinder device 43a second air cylinder 44th 2 table 45 holding member 45a cradle 46 spring 47 folding plate 48 pivot 49 third air cylinder 50 fourth air cylinder 55 second transfer means 56 moving body 57 grip 60 machine frame 70 packaging device 71 square cradle 72 discontinuous cut 73 opening

Claims (7)

[Claims] An individual bag is a bottom seal type thermoplastic film bag having discontinuous cuts or handles for forming a tie string at the opening, and these bags are stacked as they are. A folding bag group which is folded in two in a transverse direction and further folded in three so that a discontinuous cut or a handle portion for forming a cord in the opening is on the inside. 2. A bag group formed by stacking a plurality of bags, each of which is a bottom-seal type thermoplastic film bag having discontinuous cuts or grips formed in an opening thereof, is formed in a transverse direction. The first step of making a fold and folding it in two. The central portion of the thin plate is placed on a thin plate receiving base having a width approximately equal to 1/3 of the width of the bag group and supported by a cantilever at the base, with the discontinuous cut or the part with the hand on the lower side. A second step of lifting the cradle and pressing the upper surface of the group of folded bags; The two sides of the folded bag group hanging from both sides of the thin plate holder,
The folding plate is further placed on the thin plate receiving base 3
The third step of folding in half and folding it into six as a whole. Finally, a fourth step of extracting the bag group folded in six in the free end direction from the thin plate receiving base. A method for folding a group of stacked bags, wherein a bag group folded in six is obtained by the first to fourth steps. 3. A bag group formed by stacking a plurality of bags, each of which is a bottom-seal type thermoplastic film bag having discontinuous cuts or grips formed in an opening thereof for forming a tie string, is formed in a transverse direction. The first step of making a fold and folding it in two. The center portion of the bag group is placed on a receiving stand having a width of about 1/3 of the width of the bag group with the discontinuous cut or the part with the handle facing upward. The second step of pressing the upper surface of the folded bag group. A third step of sequentially folding the two-folded bag group portions protruding from both sides of the receiving table and the thin-plate holding plate onto the thin-plate holding plate to make three-fold and six-fold portions as a whole. Finally, a fourth step of extracting the bag group folded in six in the free end direction from the thin plate holding plate. A method for folding a group of stacked bags, wherein a bag group folded in six is obtained by the first to fourth steps. 4. A post-process according to claim 2 or 3, wherein the outer bag for packaging the outer bag has a U-shape, which can be separated from one of the bottom edge and one of the side edges in advance. One of the discontinuous cuts of the I-shaped sac along the central part of the bag, one of the openings formed by the unwelded portion is provided before or after packaging, and the bag group folded in six is So that the transverse fold is on the side with the discontinuous break,
A method of folding and packaging a group of stacked bags, comprising inserting into the outer bag and packing and sealing the outer bag. 5. A bottom-seal type thermoplastic film bag, wherein a plurality of bags each having a plurality of bags formed with discontinuous cuts or grips for forming a tie-string at an opening portion are formed in a transverse direction. Two-fold device for folding, three more bags for folding
A three-fold device for folding, a bag group folded into two by the three-fold device from the two-fold device, with the fold at the top,
Conveying means for conveying with the opening half of the bag group down,
And a carry-out means for carrying out the six-fold bag group from the three-fold device, wherein the three-fold device is one-third of the center of the two-fold bag group.
A thin plate cradle supported by a base supporting the width portion and a fixing table are provided on both sides of the thin plate cradle. Further, above the thin plate cradle, there is provided an interval at which a bag group folded into two can be supplied. A holding member for holding the folded bag group at the put standby position is provided on the machine frame resiliently downward, and each time the bag group is supplied onto the thin plate receiving tray, The thin plate pedestal rises above the level of the fixed table,
When the holding member is pushed up and the folded bag group is sandwiched between the thin plate receiving member and the holding member, both ends of the folded bag group are positioned on both sides of the thin plate receiving plate from the height of the table. It is equipped so as to be able to ascend to a height sufficient to hang down, and on both sides of the rising position of the thin plate receiving member and the holding member, both sides of the thin plate receiving member are attached to a machine frame slightly lower than these rising positions. A pair of folding plates whose upper edges are pivotally attached to the pivot are provided on the machine frame, and the pair of folding plates are moved from the vertical position after the thin plate receiving plate reaches the ascending position. Is moved downward in a horizontal posture, and after the folded bag group is carried out from the thin plate receiving tray, the bag group returns to the original position, and the original position of the pair of folding plates is returned. After returning to the above, Fixed Te - overlapping bag group of folding apparatus, characterized in that to return to Bull flush height. 6. A bag group formed by stacking a plurality of bags, each of which is a bottom seal type thermoplastic film bag having discontinuous cuts or grips formed in an opening thereof for forming a tie string, is formed in a transverse direction. Two-fold device for folding, three more bags for folding
A three-fold device for folding, a bag group folded into two by the three-fold device from the two-fold device, with the fold at the top,
Conveying means for conveying with the opening half of the bag group down,
And a carrying means for carrying out a six-fold bag group from the three-fold device. The three-fold device includes a receiving table supported by a machine frame that supports the center of the two-folded bag group and a base that presses the receiving table surface above the receiving table. Equipped with a thin plate holding plate that can hold 1/3 of the width of the cantilevered bag group, a pair of horizontal folding plates on both sides of the cradle, and the cradle is flush with the folding plate from above and below. The thin plate holding plate is lowered from the upper standby position, and the cradle is pushed down, and the folded bag group is formed by the cradle and the thin plate pressing portion plate. The pair of horizontal folding plates are provided such that both ends of the folded bag group can be lowered below the folding plate to a position sufficient to be folded over the thin plate. Is at the position where the thin plate is lowered. After the bag group folded out of the thin plate holding plate is successively moved onto the thin plate plate and unloaded, the pair of horizontal folding plates return to their original positions. Wherein the thin plate pressing plate returns to the upper standby position after returning to the original position. 7. A packing device is provided on the carry-out side of one of the devices according to the fifth and sixth aspects of the present invention, and a wrap film band for packaging the folded bag group can be set. The outer bag group is provided with a U-shaped discontinuous break which can be separated from one of the bottom edge and one of the side edges in advance. Than,
A foldable bag group is provided, wherein the bag is folded so that the transverse fold is on the side of the U-shaped discontinuous break. Packaging equipment.