KR20130043053A - The packaging method and the packaging system - Google Patents

Abstract

PURPOSE: A packing method and a packing system thereof are provided to prevent the sealing errors of packing bags caused when a product noncharged part of the packing bags is jammed in a sealing part of the packing bags. CONSTITUTION: A packing method is as follows. A pair of L-shaped members(5) are inserted in a packing bag to be arranged in one side of a product noncharged part(2b). The L-shaped members rotate on shaft parts(5a) to make bent parts(5b) contact to the product noncharged part. The noncharged part is folded, and an inlet of the packing bags is flatly closed. The pair of L-shaped members is risen up in parallel to the width direction of the packing bags. The inlet of the packing bags is sealed in a state where the pair of L-shaped members is drawn out from the inlet of the packing bags.

Description

PACKAGING METHOD AND THE PACKAGING SYSTEM

The present invention provides a packaging bag filled with a packaged object (baging product) in an outer bag, and the outer bag The present invention relates to an improvement of a packaging method for sealing an inlet along a bag width direction. Here, the bag is a comprehensive concept that encompasses bags, bags, envelopes, as well as bags. Hereinafter, it is the same in this specification.

Packing bags (bagging products) in which packing materials, such as relatively hard and indefinite bulk goods, are tightly packed, are generally filled with a packing part and a packing part where the packing material is tightly packed. It consists of a non-filling part (head space part and inlet sealing part) which continues in the upper part. This kind of bagging product may be damaged by the packaged material in the process of distribution or the like, so that it may be further packaged by an outer bag for the purpose of protecting the bagging product.

When the bagging product is packaged by the outer bag, the size of the outer bag is generally set to be slightly larger than the size of the bagging product in consideration of the aesthetics of the final product after packing the outer bag. Therefore, in the bagging product when accommodated in the outer bag, when the part of the non-filling part reaches the inlet sealing scheduled part of the outer bag, and the inlet of the outer bag is sealed in that state, a part of the non-filling part of the bagging product is closed. There is a risk of causing trouble in the inlet sealing of the outer bag, such as being caught in the seal of the bag.

On the other hand, Patent Document 1, after filling the granules in the bag, a lifting pressure rod of a lifting type is inserted into the bag, and the inlet is sealed after stamping the granules in the bag by the same pressure bar. Technique is shown.

In the inlet sealing of the outer bag, the technique of Patent Literature 1 is applied to avoid a part of the non-filled part of the bagging product from being caught in the sealing part of the outer bag. It is conceivable to first stamp and flatten, and then seal the inlet of the outer bag.

However, if the pressure rod is raised from the outer bag, the unfilled part of the bagging product may be restored to its original state before sealing the inlet of the outer bag, and a portion of the non-filled part may reach the inlet sealing part of the outer bag again. have. In addition, even if the non-filled portion of the bagging product is not restored to its original state, if the non-charged portion is packaged in the outer bag in a state of being distorted, there is a problem that the aesthetics of the bagging product are damaged and the product value is lowered.

Patent Document 1 Japanese Unexamined Utility Model Publication No. 62-38809

In the present invention, when the bagging product is accommodated in the outer bag and the inlet of the outer bag is sealed along the bag width direction, a part of the non-filling part (head space part and the inlet sealing part) of the bagging product is sealed in the outer bag. The purpose is to prevent the occurrence of poor sealing such as pinching sealing, and at the same time not to damage the appearance of the bagging product packaged in the outer bag.

In the packaging method according to the present invention, the bagging product is composed of a packed part filled with a packaged object and a non-filled part continuous on the packed part, the unfilled part is composed of a head space part and a sealing part, and the longitudinal direction of the sealing part is It is accommodated in the said outer bag so that it may correspond to the bag width direction of an outer bag. The packaging method according to the present invention is to seal the inlet of the outer bag containing the bagging product in the bag width direction in this aspect, wherein the left and right pairs of L-shaped members each comprising a vertical shaft portion and a horizontal curved portion are described above. The bag is inserted into the outer bag at the inlet opening of the outer bag and placed on one side of the non-filled part of the bagging product. The L-shaped member is rotated about the shaft to rotate the bent portion of the bagging product. Contacting the non-charging part, and subsequently folding the non-charging part to the opposite side, closing the inlet of the outer bag in a flat shape, and thereby supporting the non-charging part by pressing and folding the inner part of the outer bag. The left and right pair of L-shaped members in the shaft portion Rotate the core to raise the pair of left and right L-shaped members in parallel with the bag width direction of the bag, and pull out upward from the inlet of the bag, and seal the inlet of the bag. Characterized in that.

'Match' here is a concept that includes not only physically exact matches but also almost matches. Hereinafter, it is the same in this specification.

In addition, the term 'vertical', 'horizontal', 'horizontal', and 'parallel' is a concept that includes not only physically exactly vertical, horizontal or parallel, but also substantially vertical, horizontal or parallel. Hereinafter, it is the same in this specification.

In addition, the term "L-shaped member" is a concept that includes not only a physically exactly L-shaped member but also an approximately L-shaped member. Hereinafter, it is the same in this specification.

As one preferable aspect of the packaging method, after the pair of left and right L-shaped members are pulled upward from the inlet of the outer bag, both edges of the vicinity of the inlet near the inlet are closed in a flat shape. The part is clamped by the left and right grippers, and the gap between the left and right grippers is widened to tighten the inlet and seal the tightened inlet.

In the above packaging method, the outer bag is accommodated in a retainer or hung by two pairs of left and right grippers around the inlet and suspended. In the former case, in order to close the inlet of the outer bag in a flat shape, an inlet closing means is required separately. In the latter case, the inlet of the outer bag can be closed in a flat shape by widening the gap between the left and right grippers.

The packaging system according to the present invention is for carrying out the above packaging method, comprising: a conveying apparatus for intermittently sequentially transferring an outer bag containing the bagging product along a predetermined conveying path, and in the outer bag on the conveying path; A folding device having a pair of left and right L-shaped members that fold the unfilled portion of the bagging product accommodated, an inlet closure device for closing the inlet of the outer bag in a flat shape on the transport path, and an outer bag of the outer bag on the transport path. It consists of an inlet sealing device having a pair of hot plates for sealing the inlet.

The L-shaped member of the folding device is composed of a vertical shaft portion and a horizontal bent portion, and relatively lifts and moves relative to the outer bag, and is located upward from the inlet of the outer bag when it is raised, and at the inlet of the outer bag when it is lowered. It enters into the outer bag and is located on one side of the non-filled part of the bagging product, and the L-shaped member rotates about the shaft part in the lowered position, at which time the bent portion pivots in a horizontal plane to contact the non-filled part of the bagging product and continue. The non-filling part is folded to the opposite side, and after the inlet of the outer bag is closed, it rotates to make the bend parallel to the bag width direction of the outer bag, and then continuously rises to be removed from the outer bag.

The packaging system may take the following form, for example.

(1) It is further provided with the left and right gripper which clamps both edge parts of the inlet vicinity of the said exterior bag on the said conveyance path | route. The gripper pinches both edges of the outer bag after the L-shaped member is lifted out of the outer bag, and subsequently widens the gaps to tighten the inlet of the outer bag, and the hot plate tightens the outer bag. Sealed inlet.

(2) The outer bag is accommodated in the retainer, and the outer bag is transported along the transfer path for each retainer.

(3) The inlet closure device includes a shaping member for sandwiching the vicinity of the inlet of the outer bag from both sides to support the vicinity of the inlet in a flat shape. It is preferable that this shaping | molding member is arrange | positioned so that a pair may oppose to the width direction both sides of an exterior bag.

(4) The conveying apparatus is provided with a pair of left and right grippers for pinching both edge portions near the inlet of the outer bag, and is conveyed along the conveying path while the outer bag is held by the gripper. Since the inlet of the outer bag can be closed in a flat shape by widening the distance between the left and right grippers, the right and left grippers may also serve as the inlet closure device in this case.

According to the present invention, in the case where the bagging product is accommodated in the outer bag and the inlet of the outer bag is sealed along the bag width direction, a part of the non-filled part of the bagging product is caught in the sealing part of the outer bag, such as pinching and sealing. It is possible to prevent the occurrence of poor sealing and at the same time to prevent the appearance of the bagging product packaged in the outer bag.

1 is an overall perspective view of a packaging apparatus according to the present invention.
2 is a perspective view for explaining a part of the packaging method and apparatus according to the present invention in the order of process.
3 is a perspective view for explaining a part of the packaging method and apparatus according to the present invention in the order of process.
4 is a perspective view for explaining a part of the packaging method and apparatus according to the present invention in the order of process.
5 is a perspective view for explaining a part of the packaging method and apparatus according to the present invention in the order of process.
6 is a perspective view for explaining a part of the packaging method and apparatus according to the present invention in the order of process.
7 is a perspective view for explaining a part of the packaging method and apparatus according to the present invention in the order of process.
8 is a perspective view for explaining a part of the packaging method and apparatus according to the present invention in the order of process.
9 is a perspective view for explaining a part of the packaging method and apparatus according to the present invention in the order of process.
10 is a perspective view for explaining a part of the packaging method and apparatus according to the present invention in the order of process.
11 is a perspective view for explaining a part of the packaging method and apparatus according to the present invention in the order of process.

Hereinafter, the packaging method and packaging system according to the present invention will be described in detail with reference to FIGS.

As shown in Fig. 2, the bagging product 2 accommodated in the outer bag 1 consists of a packing part 2a in which the package is tightly packed and a flat non-filling part 2b continuous on it. The non-charged part 2b consists of the head space part which follows the charging part 2a, and the sealing part of an upper end. The bagging product 2 is accommodated in the outer bag 1 so that the direction of the longitudinal direction (bag width direction) of the non-filling part 2b (head space part and the sealing part) coincides with the bag width direction of the outer bag 1. It is. The outer bag 1 is a gusset bag.

In the packaging system shown in Fig. 1, the outer bag 1 containing the bagging product 2 is retained in the retainer 3, and is intermittently sequentially transferred along the predetermined feed path for each of the retainers. The non-filling part 2b of the bagging product 2 is folded to one side on the path, the inlet of the outer bag 1 is closed in a flat shape, and the inlet of the outer bag 1 is sealed along the bag width direction. .

The packaging system includes a conveying apparatus 4 for conveying a retainer 3 (outer bag 1) along the conveying path, and an unfilled portion of the bagging product 2 accommodated in the outer bag 1 on the conveying path. (2b) Folding apparatus (represents only a pair of left and right L-shaped members (5, 5)), and inlet closing device for closing the inlet of the outer bag 1 on the conveying path (formal members (6, 6, 7, 7), only the folding inner poles (8, 9, 10, 11) and the folding outer poles (12, 13) are shown, and the inlet sealing device for sealing the inlet of the outer bag (1) on the transport path (Only the hot plates 15 and 15, the hot plates 16 and 16 and the cooling plates 17 and 17 are shown) and a plurality of sets of left and right pairs of grippers 18 and 18. 19 is a conveyor which carries out the retainer 3 (outer bag 1) taken out from the feed path of the feeder 4 after sealing the inlet of the outer bag 1 by this system.

The conveying apparatus 4 consists of the supply conveyor 21 which has a linear conveyance path | route, the retainer conveyance member 22, and the rotary conveyor 23 which has a circular conveyance path | route.

The supply conveyor 21 consists of several conveyor rollers arrange | positioned horizontally, and conveys the retainer 3 which accommodated the outer bag 1 intermittently and sequentially at equal intervals along a linear conveyance path | route. All the retainers 3 conveyed on the supply conveyor 21 are guided so that the center of the width direction (perpendicular to the conveyance path) is located on the center line C in the conveyance path of the feed conveyor 21. The retainer 3 also consists of a flat bottom plate 24 and a rectangular frame 25.

A plurality of stop positions at which the retainer 3 stops are set at equal intervals on the feed path of the supply conveyor 21, and in the bag supply position A, which is one of them, the gusset bag with the fold line opened from above. The outer bag 1 made up is inserted into the retainer 3 so that the bag width direction is perpendicular to the transfer path. The outer bag 1 consists of a gusset bag and is accommodated in the retainer 3 in a state where the folding line is open. The frame 25 of the retainer 3 is made slightly larger in plan view than the outer bag 1 with the folding line open.

The next stop position is the accommodation position B, where the bagging product 2 is accommodated in the outer bag 1.

The next stop position is the folding start position (C). In this folding start position C, the space 21a is formed in the center of the conveyance surface of the supply conveyor 21, and the said retainer conveyance member 22 is waiting in this space 21a. The conveyor roller is not provided in the front side of the space 21a (front side of the conveyance path | route of the supply conveyor 21) (refer FIG. 5). Further, on the folding start position C, the folding device (a pair of L-shaped members 5 and 5), the inlet closing device (orthopedic members 6, 6, 7, 7) and the inner pole 8 for folding. , 9, 10, 11) and folding outer poles 12, 13) are waiting.

Next, before describing the retainer conveying member 22, the rotary conveyor 23 is demonstrated.

The rotary conveyor 23 has eight retainer supports 26 which are horizontally arranged at equal intervals along the circular movement path and which move intermittently along the movement path. The retainer 3 is mounted horizontally on the retainer support 26, and the outer bag 1 in the retainer 3 has its bag width direction tangential to the movement path, and the retainer support 26 As it moves, it is intermittently conveyed along the circular conveyance path.

Corresponding to each retainer support 26 of the rotary conveyor 23, a pair of left and right grippers 18 and 18 are provided. Each gripper 18, 18 moves intermittently along the circular movement path with the retainer support 26, opens and closes at a predetermined timing on the movement path, and widens or narrows the space therebetween. Each gripper 18, 18 clamps both edge portions near the entrance of the outer bag 1 accommodated in the retainer 3. Hereinafter, the movement paths of the grippers 18 and 18 and the retainer support 26 may be referred to as the movement paths of the rotary conveyor 23 without particular distinction.

Each retainer support 26 stops eight times (stopping positions D to)) during one rotation along the movement path together with the corresponding grippers 18 and 18. The inlet sealing devices (hot plates 15 and 15, hot plates 16 and 16 and cooling plates 17 and 17) are disposed at the stop positions F, G and H.

The first stop position D is supplied to a supply position at which the rotary conveyor 23 receives the retainer 3 which received the outer bag 1 from the retainer conveying member 22 (hereinafter, the stop position D is supplied). Also referred to as position D). The retainer 3 is placed on the retainer support 26 at this supply position D, and the grippers 18 and 18 are closed to sandwich both edge portions near the inlet of the outer bag 1. Before the retainer support 26 and the grippers 18 and 18 move and reach the stop position F, the grippers 18 and 18 widen the mutual gap to tighten the inlet of the outer bag 1.

The stop position F is a first sealing position (hereinafter, the stop position F is also referred to as the first sealing position F), and a pair of hot plates 15 and 15 for inlet sealing are arranged near the same position. It is. When the retainer support 26 stops at the 1st sealing position F, the hot plates 15 and 15 are closed and the inlet of the outer bag 1 is pinched and sealed. The stop position (G) is a second sealing position where a pair of hot plates (16, 16) are arranged, and when the grippers (18, 18) stop at the same position, the hot plates (16, 16) are closed and the second inlet is closed. Sealing takes place. The stop position H is a cooling position, where cooling plates 17 and 17 for cooling the inlet are arranged, and when the grippers 18 and 18 stop at the same position, the cooling plates 17 and 17 close to cool the inlet. This is done.

When the retainer support 26 stops at the stop position J, the grippers 18 and 18 are opened to release the outer bag 1, and then the outer bag 1 is moved by a conveying means not shown in the drawing. The retainer 3 accommodated is conveyed on the conveyor 19 and conveyed toward the next process position. The grippers 18 and 18 together with the retainer support 26 narrow the mutual gap before reaching the supply position D. FIG.

On the extension line of the center line CO of the feed path of the feed conveyor 21, the axis center A of the said retainer support 26 and the said movement path of the grippers 18 and 18 is located. The center position of the grippers 18 and 18 left and right stopped at the supply position D (the center position between the grippers 18 and 18 on the left and right) is the center line C and the axis A. Located on the vertical plane comprising a. If the center position of the bag width direction of the bag bag 1 accommodated in the retainer 3 conveyed by the feed conveyor 21 is located on the center line CO of the feed path of the feed conveyor 21, the bag bag ( The center position in the widthwise width direction of 1) is also located on the vertical surface.

The retainer conveying member 22, which is part of the conveying device 4 (see Fig. 2), consists of a frame 27 and two rollers 28, 29 supported by cantilever to rotate on the frame 27. . The rollers 28 and 29 are provided in parallel with the conveyance direction of the supply conveyor 21. As shown in FIG.

The retainer conveying member 22 horizontally mounts the retainer 3 stopped at the folding start position C of the conveying path of the feed conveyor 21 to the feed position D of the moving path of the rotary conveyor 23. Transfer. The retainer conveying member 22 is moved by a drive mechanism not shown in the figure, and the movement path (the conveying path of the retainer 3 and the outer bag 1) is vertically increased at the folding start position C. FIG. , The horizontal linear movement parallel to the feed path of the feed conveyor 21, and the vertical fall at the feed position (D).

The retainer conveying member 22 has a complementary shape with the feed conveyor 21 in plan view at the folding start position C of the feed path of the feed conveyor 21. That is, the retainer conveying member 22 is inserted in the space 21a formed in the center part of the conveyance surface of the supply conveyor 21 in the said folding start position C, and is not interrupted by the conveyor roller in vertical rise. Departure from the space 21a. In addition, in the space 21a, the front side of the transfer path of the supply conveyor 21 is opened (see FIG. 5), so that the retainer transfer member 22 which retreats (returns) along the movement path, as described later, It is possible to enter without interference of the conveyor roller.

In addition, the retainer conveying member 22 has a complementary shape with the retainer support 26 when viewed in a plan view, and the space 22a surrounded by the frame 27 and the rollers 28, 29 is open at the front side of the movement path. It is. Therefore, as will be described later, the retainer conveying member 22 which has moved linearly in the horizontal plane along a predetermined movement path toward the supply position D of the rotary conveyor 23 interferes with the retainer support 26. Therefore, the retainer support 26 can enter the space 22a and descend vertically in that state.

The folding device is provided with a pair of left and right L-shaped members 5, 5 having the shape of a curved rod as clearly shown in FIG. The L-shaped members 5 and 5 are each composed of a vertical shaft portion 5a and a horizontal curved portion 5b, and are relatively raised and lowered at a predetermined timing with respect to the retainer conveying member 22 and the shaft portion 5a. Rotation about the center (bending part 5b rotates in the horizontal plane about shaft part 5a). These L-shaped members 5 and 5 have an action of folding in one direction the unfilled portion 2b of the bagging product 2 accommodated in the outer bag 1.

As shown in Fig. 2, the inlet closing device is similar to the support shafts 7a and 7a, similarly to the pair of shaping members 6 and 6 that rotate in the horizontal plane about the support shafts 6a and 6a, respectively. ) And a pair of orthopedic members 7 and 7 which rotate in a horizontal plane about the horizontal plane, respectively, and are arranged in a vertical position with respect to the conveying path of the supply conveyor 21, and fold each other in the posture and retainer. The four plate-shaped inner poles 8, 9, 10, and 11 for lifting up and down the conveying member 22, as well as a pair of plate-like ones arranged in a vertical position with respect to the conveying path and folded in the posture. Folding outer poles (12, 13). Such a member for defining the inlet of the gusset bag is, for example, Japanese Patent No. 422421, Japanese Patent Application Laid-Open No. 2004-142776, Japanese Patent Application Laid-Open No. 55-79204, and Japanese Patent Publication. As described in Japanese Patent Application Laid-Open No. 50-25393, it is known per se. These members also move along with the retainer conveying member 22 along the movement path of the retainer conveying member 22 (the conveying paths of the retainer 3 and the outer bag 1).

2 to 11, the L-shaped members 5 and 5, the shaping members 6, 6, 7, and 7 the inner poles 8, 9, 10 and 11 for folding and the outer poles for folding. 12 and 13 and the function, operation and movement path of the retainer conveying member 22 will be described in detail. 2-11, the operation mechanism and the moving mechanism of each member are abbreviate | omitted in the figure.

2 shows the L-shaped members 5 and 5 and the shaping members 6 and 6 when the retainer 3 and the outer bag 1 stop at the folding start position C of the feed path of the supply conveyor 21. , 7, 7), the inner poles 8, 9, 10 and 11 for folding, the outer poles 12 and 13 for folding and the retainer conveying member 22 are shown (initial position).

The upper surface (the surface on which the retainer 3 is placed) of the retainer conveying member 22 is located slightly below the conveying surface of the supply conveyor 21 at the folding start position C, and the retainer conveying member 22 is formed. Interference of the retainer 3 conveyed to the folding start position C is prevented.

The left and right pairs of L-shaped members 5 and 5 have a predetermined distance between the ends of the bent portions 5b and 5b at a position above the central portion of the outer bag 1 stopped at the same position in the folding start position C. FIG. And face each other and face each other in a plane perpendicular to the conveying path of the feed conveyor 21.

The shaping members 6 and 6 and the shaping members 7 and 7 are arranged so as to face each other on both sides of the outer bag 1 in the folding start position C with the transfer path of the supply conveyor 21 interposed therebetween. have. The shaping members 6 and 6 and the shaping members 7 and 7 rotate in the horizontal plane and open and close, respectively, and close the inlet vicinity of the outer bag 1 from both sides when closed. In Fig. 2, the shaping members 6 and 6 and the shaping members 7 and 7 are open and in the evacuation position, respectively, and interfere with the retainer 3 and the outer bag 1, which are conveyed to the folding start position C. This is prevented.

The folding inner poles 8, 9, 10, 11 are arranged above the central portion of the bag 2 stopped at the transport start position C in a state where they are brought close to each other. The folding inner poles 8, 9, 10, 11 each have outward facing grooves 8a, 9a, 10a, 11a. The folding outer poles 12 and 13 are arranged so as to face each other on both sides of the bag 2 with the transfer path of the supply conveyor 21 interposed therebetween.

Folding inner poles (8, 9, 10, 11) are disposed at a position higher than folding outer poles (12, 13), folding outer poles (12, 13) are orthopedic members (6, 6, 7, 7). It is located a little higher than).

3, the retainer conveying member 22 mounts the retainer 3 and the outer bag 1 vertically by a predetermined distance, while the folding inner poles 8, 9, 10, 11 Vertically descending by the distance, the folding inner poles 8, 9, 10, 11 are located at a predetermined position inside the entrance (the upper end of the outer bag 1 and the folding inner pole 1) from the entrance where the outer bag 1 opens. (8, 9, 10, 11) shows the state inserted in the position where the upper end becomes substantially the same height. In addition, the shaping | molding members 6, 6, 7, and 7 and the folding outer poles 12 and 13 do not raise and lower.

Fig. 4 shows that the folding inner poles 8, 9, 10, and 11 continue to move substantially horizontally in the radial direction simultaneously from the assembled state, are separated from each other, dispersed to a predetermined position, and stop, and the L-shaped members 5, 5 ) Is vertically lowered and inserted into the outer bag 1, where the bent portions 5b and 5b reach the vicinity of the upper end of the charging portion 2a of the bagging product 2. In addition, the folding inner poles 8 and 9 and the folding inner poles 10 and 11 are symmetrically arranged and maintain symmetry with respect to the vertical plane passing through the center line CA in the feed path of the supply conveyor 21. Fold while The foldable inner poles 8, 9, 10, and 11 dispersed in all directions contact four corners of the inner surface of the inlet, and the open inlet is pushed in a radial direction from the inner side to become a quadrilateral state.

Subsequently, the retainer conveying member 22 starts horizontal movement toward the supply position D of the rotary conveyor 23 in parallel with the conveying path of the feed conveyor 21. Between the horizontal movements, the L-shaped members 5 and 5, the shaping members 6, 6, 7, and 7, the inner poles 8, 9, 10 and 11 for folding and the outer poles 12 and 13 for folding. ) Follows the retainer conveying member 22 and moves horizontally together.

In the process of moving the retainer conveying member 22 horizontally toward the feeding position D, the L-shaped members 5 and 5 are near the center of the bagging product 2 along the direction of movement of the retainer conveying member 22. (Near the center perpendicular to the width direction), i.e., move horizontally to the vicinity of the non-charging portion 2b, and symmetrically about the shaft portions 5a and 5a as shown in FIG. The vertical plane passing through the center line (C (o)) of the feed path of 21) as the plane of symmetry). Accordingly, the bent portions 5b and 5b of the L-shaped members 5 and 5 pivot in the horizontal plane to contact the non-filled portion 2b of the bagging product 2, and then the non-filled portion 2b is oriented in one direction. In the example, the front side of the retainer conveying member 22 is folded). The non-filling portion 2b of the bagging product 2 has a shape which is pressed flat to the upper surface of the filling portion 2a by the bent portions 5b and 5b of the L-shaped members 5 and 5.

Subsequently, as shown in FIG. 6, the folding outer poles 12 and 13 move horizontally inward to approach each other, and contact the folding line 1a at the center of the side of the outer bag 1 toward the inside. At the same time, the folding inner poles 8 and 9 and the folding inner poles 10 and 11 move parallel to and horizontally with respect to the moving direction of the retainer conveying member 22 to approach each other, and the outer bag 1 Fold the sides of the mold to form a flat shape.

At the time when folding of the side part of the outer bag 1 is completed while the retainer conveying member 22 moves horizontally, as shown in FIG. 7, the shaping | molding member 6 and 6 and the shaping | molding member 7 and 7 are shown. ) Rotates and closes in the horizontal plane, and the position where the two side portions are mainly folded in the vicinity of the inlet of the outer bag 1 is horizontally sandwiched from the outside, to form a flat shape and maintain its flattened shape. Subsequently, the L-shaped members 5 and 5 are rotated about 90 degrees symmetrically about the shaft portions 5a and 5a and in the opposite direction to the previous rotation, and the original arrangement (the ends of the bent portions 5b and 5b). Are faced at predetermined intervals, and are arranged to face in the plane perpendicular to the feed path of the feed conveyor 21). By this operation, the non-filled portion 2b of the bagging product 2 is freed from the restraint by the bent portions 5b and 5b of the L-shaped members 5 and 5, but the entrance of the outer bag 1 is flat. By shaping, it is maintained as it is pressed and folded by the inner surface of the outer bag 1.

Next, the folding outer poles 12 and 13 move horizontally outward and fall apart from each other. This is because when the retainer conveying member 22 reaches the feeding position D of the conveying path of the rotary conveyor 23, the folding outer poles 12, 13 interfere with the grippers 18, 18 at the same position. To avoid that. In addition, the L-shaped members 5 and 5 are raised to escape from the inlet of the outer bag 1. In the meantime, the left and right grippers 18 and 18 and the retainer support 26 approach the supply position D, and then stop at the supply position D. At that timing, the horizontally moving retainer conveying member 22 approaches the feed position D further and the retainer support 26 begins to enter into the space 22a of the retainer conveying member 22.

Subsequently, the retainer conveying member 22 stops at the supply position D. FIG. The state at this time is shown in FIG. The retainer support 26 enters into the space 22a. When the retainer conveying member 22 stops at the supply position D, the grippers 18 and 18 are immediately closed to clamp both edge portions near the inlet of the outer bag 1 shaped into a flat shape (see Fig. 9). . In addition, the position where the grippers 18 and 18 hold | maintain is the upper position beyond the position which the shaping | molding member 6, 6, 7, 7 pinched. In addition, the inner foldable inner poles (8, 9, 10, 11) are included in the place where the entrance is folded, while the inner poles (8, 9, 10, 11) of the folding Since the grooves 8a, 9a, 10a and 11a are located, it is only the outer bag 1 that the grippers 18 and 18 actually pinch.

Subsequently, the retainer conveying member 22 is vertically lowered at the supply position D, the retainer 3 is placed on the retainer support 26, and the predetermined distance is further lowered as shown in FIG. . Further, the lowering distance of the retainer 3 (difference between the bottom surface of the retainer 3 and the height of the upper surface of the retainer support 26 at the time when the retainer conveying member 22 stops at the supply position D) is very large. It is set to be slightly.

Subsequently, as shown in FIG. 10, the folding inner poles 8 and 9 and the folding inner poles 10 and 11 move horizontally inward to approach each other, thereby deviating from the side folding parts, and 6, 6) and orthopedic members 7, 7 are opened to release the outer bag 1 and return to the original evacuation position. Meanwhile, the retainer conveying member 22 starts to retreat in parallel with the conveying path of the feed conveyor 21.

11, the folding inner poles 8, 9, 10 and 11 rise vertically and exit from the inlet of the outer bag 1. As a result, the inlet of the outer bag 1 has a flatter shape.

After that, the retainer conveying member 22 retreats the horizontal plane in parallel with the conveying path of the feed conveyor 21, and the space 21a of the feed conveyor 21 is located at the start position C of the conveying path. It enters and returns to the initial position (refer FIG. 2). L-shaped members 5, 5, orthopedic members 6, 6, 7, 7, inner poles 8, 9, 10 and 11 for folding and outer poles 12 and 13 for folding also supply in-plane It retracts in parallel with the conveyance path of the conveyor 21 and returns to the said initial position (refer FIG. 2).

In addition to the above examples, the present invention may take various forms, for example, as follows.

(1) In the above example, even after the shaping members 6, 6, 7, 7 are closed and the inlet of the outer bag 1 is sandwiched and supported in a flat shape, the L-shaped members 5, 5 and the inner for folding The pawls 8, 9, 10, 11 and the folding outer poles 12, 13, together with the retainer conveying member 22 and the shaping members 6, 6, 7 and 7, convey paths of the rotary conveyor 23. While moving to the supply position (D) of or to the vicinity thereof, while moving into the interior of the outer bag (1) or caught in the folding portion of the inlet of the outer bag (1), the orthopedic members (6, 6, 7, 7) ) May be closed and immediately exit from the inside of the outer bag 1 after pinching the inlet of the outer bag 1, or may be out of the folding part of the outer bag 1.

(2) In the above example, in order to shorten the time required for shaping and conveying, the L-shaped members 5 and 5, the shaping members 6, 6, 7, and 7 are folded during the movement of the retainer conveying member 22. Although the inner poles 8, 9, 10 and 11 for folding and the outer poles 12 and 13 for folding performed the folding and shaping operation while following the movement of the retainer conveying member 22, for example, the supply conveyor 21 The same folding and orthopedic operation may be performed only at or near the start position (C) of the feed path. In this case, the form of the above (1) can be adopted as well.

(3) The above example is particularly applicable to the case where the outer bag 1 is a gusset bag, and since it was necessary to fold the side of the outer bag 1, the inlet closing means has four inner poles for folding ( 8, 9, 10, 11 and folding outer poles 12, 13 were provided. In addition, the folding inner poles 8, 9, 10, and 11 and the folding outer poles 12 and 13 have an action of shaping the inlet of the opened outer bag 1 into a flat shape. 6, 7, and 7 had a function of maintaining the shape of the inlet, which is mainly shaped into a flat shape. However, for example, in the case where a side seal is formed at both edges, such as a flat bag or a self-supporting bag, and the bag is not required to be folded on the side, the inlet closing means is a member thereof. It is not necessary to have a structure, and the inlet opened by the shaping | molding member itself can be clamped, shaping | molding to a flat shape, and maintaining the state.

In the above example, the outer bag 1 is initially accommodated in the retainer 3 and transported, and the retainer 3 is held by the grippers 18 and 18 in the rotary conveyor. From the beginning, the outer bag can be conveyed by sandwiching both edges near the inlet of the outer bag with the right and left grippers. In this case, since the inlet of the outer bag can be closed in a flat shape by widening the gap between the left and right grippers, it is not necessary to provide an inlet closing means separately (left and right grippers serve as inlet closing means).

1: outer bag
2: bagging products
2a: live part of bagging product
2b: Non-filled part of bagging product
3: retainer
4: Feeding device
5: L-shaped member
6, 6, 7, 7: orthopedic member
8, 9, 10, 11: Inner pole for folding
12, 13: folding outer pole
18, 18: left and right grippers
21: Supply Conveyor
22: retainer transfer member
23: rotary conveyor
26: retainer support
A ～ K: Stop position of feed path

Claims (7)

A packaging method for sealing an inlet of an outer bag containing a bagging product filled with a packaged object along a bag width direction, wherein the bagging product is filled with a packaged object. The non-charged portion which is continuous on the charged portion, and the non-charged portion is composed of a head space portion and a sealing portion. A pair of left and right L-shaped members which are accommodated in the packaging bag so that the longitudinal direction of the sealing portion coincides with the bag width direction of the packaging bag, each comprising a vertical shaft portion and a horizontal bent portion, Inserted into the outer bag at the inlet opening of the outer bag to be disposed on one side of the non-filled portion of the bagging product, the L-shaped member is rotated about the shaft portion, the bent portion turning in the horizontal plane said Contacting the non-filled part of a gingham product, and subsequently folding the non-filled part to the opposite side, closing the inlet of the outer bag in a flat shape, and thus supporting it by pressing the unfilled part in the inner surface of the outer bag. The left and right pair of L-shaped members are rotated about the shaft portion, and the bent portion is parallel to the bag width direction of the outer bag. The packaging method characterized by sealing the inlet of the outer bag after being pulled out upward.
The method of claim 1,
After pulling the pair of left and right L-shaped members upward from the inlet of the outer bag, the edges near the inlet are held by left and right grippers while the inlet of the outer bag is closed in a flat shape. A packaging method characterized in that the inlet is tightened by widening the gap between the left and right grippers, and the tight inlet is sealed.
A packaging system for sealing an opening of an outer bag containing a bagging product filled with a packaged object along a bag width direction, wherein the bagging product comprises a packing part filled with a packing material and a non-filling part continuous on the packing part. The non-filling portion includes a head space portion and a sealing portion, and the sealing portion is accommodated in the outer bag so as to match the bag width direction of the outer bag, and the outer bag containing the bagging product is disposed along a predetermined transport path. A folding device having a feeding device for feeding sequentially and intermittently, a pair of left and right L-shaped members for folding non-filling portions of bagging products accommodated in the outer bag on the conveying path, and the sheathing on the conveying path. An inlet closure device for closing the inlet of the bag in a flat shape; An inlet sealing device having a pair of hot plates for sealing the inlet of the outer bag, wherein the L-shaped member consists of a vertical shaft and a horizontal bend, and is elevated relative to the outer bag. And, when ascending, is located upward from the inlet of the outer bag, and when lowered, enters into the outer bag at the inlet of the outer bag, and is located on one side of the non-filled part of the bagging product, and the L-shaped member is in the lowered position. Rotate around the shaft, at which time the bent portion pivots in a horizontal plane to contact the non-filled portion of the bagging product and subsequently folds the non-filled portion to the opposite side, and rotates after the inlet of the envelope is closed The curved portion is parallel to the bag width direction of the outer bag and continues to rise. Packing system.
The method of claim 3,
Further comprising left and right grippers for pinching both edges in the vicinity of the entrance of the outer bag on the conveying path, wherein the left and right grippers pinch both edges after the L-shaped member rises, and continue to widen the space between them. And the inlet sealing device seals the inflated inlet of the outer bag.
The method of claim 3,
The packaging bag is accommodated in the retainer, characterized in that the conveying device conveys the retainer containing the outer bag.
5. The method of claim 4,
The packaging bag is accommodated in the retainer, characterized in that the conveying device conveys the retainer containing the outer bag.
The method according to any one of claims 3 to 6,
The inlet closure device includes an orthopedic member which sandwiches the vicinity of the inlet of the outer bag from both sides to support the vicinity of the inlet in a flat shape, and the orthopedic member faces a pair of widthwise sides of the outer bag. Packaging system, characterized in that the arrangement.

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