JP3485340B2 - Method and apparatus for folding bag mouth of can lid package - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for folding a bag mouth of a can lid package for folding and closing the bag mouth of a can lid package in which a plurality of can lids are stacked and packed in a bag.

[0002]

2. Description of the Related Art Usually, a can lid is shipped as a can lid package in which a predetermined number of columns are stacked and packed in a bag. In the can lid package, first, a stacking can lid group is housed in a bag which is supplied in a flatly folded state by a bagging device, and is dispensed. Next, the bag mouth of the can lid package is folded by a folding device provided on the downstream side of the bagging device. During the folding operation of this folding device, the can lid package is conveyed in an upright state along the conveying path, and a plurality of folding plates provided so as to intersect the conveying path sequentially fold and close the bag mouth. . That is, first, folding is started by the first folding plate pushing down a part of the bag mouth so as to be orthogonal to the transport path, and then a plurality of other folding plates are sequentially diffracted several times from other directions. The bag mouth of the can lid package is closed by inserting it.

However, the can lid package formed as described above may not be in a desirable closed state due to a defective folding when the bag mouth is folded by the folding plate. Then, the inventor paid attention to the work of folding the bag mouth by the first folding plate and found that the bag was affected by a pair of folds formed when the bag was folded at the time of folding. That is, the conventional bagging device dispenses the can lid package to the side where the fold line is formed when the bag is folded. As a result, when the can lid package is put into the transport path, the first folding plate starts folding from the pair of folds. At this time, since the fold line tries to maintain the upright state of the bag mouth and the first folding plate pushes down a part of the bag mouth against the fold, the folded shape is distorted and the closed state becomes poor. .

[0004]

DISCLOSURE OF THE INVENTION It is an object of the present invention to provide a method and apparatus for folding a bag mouth of a can lid package, which can prevent the bag mouth from being folded in a defective manner. And

[0005]

In order to achieve the above object, the method of the present invention is formed by inserting and accommodating a can lid group in which a predetermined number of column-shaped layers are stacked into a flatly folded bag from its bag mouth. In the method of folding the bag mouth of the can lid package that is closed by folding the bag mouth several times, the folding operation is started at the fold position formed in the bag of the can lid package. .

In the apparatus of the present invention, a can lid group in which a predetermined number of columnar layers are laminated is inserted and stored in a flatly folded bag from its bag mouth to form a can lid package on the downstream side. The can lid package provided from the bagging device is conveyed in an upright state, and first folding is started by the first folding plate projecting orthogonally to the conveying direction, and then a plurality of other foldings are performed. In a folding device of a bag mouth of a can lid package for closing a bag mouth of the can lid package with a plate so as to be closed several times, a fold formed in the bag is a can lid package delivered from the bagging device. It is characterized in that a loading device for loading the first folding plate so as to perform the folding work is provided at the position.

[0007]

According to the method of the present invention, since the folding work is started at the position of the fold formed on the bag of the can lid package, the influence of the fold can be surely eliminated during the folding work. It will be possible.

Further, the apparatus of the present invention is provided with the charging device, and the first folding plate starts the first folding from the side facing the fold of the bag of the can lid packaging body. The above method is realized by inputting.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram showing the installation state of the apparatus of this embodiment, FIG. 2 is an explanatory plan view showing a part of the folding apparatus of this embodiment, and FIG. 3 is a loading apparatus of the folding apparatus of this embodiment. FIG. 4 is an explanatory side view, and FIG. 4 is an explanatory view showing a part of the folding process of the opening of the can lid package by the folding device.

As shown in FIG. 1, the folding device 1 of this embodiment is arranged on the downstream side of the bagging device 2.

Although the detailed description of the bagging device 2 is omitted, the can lids that are continuously supplied in a laminated state are separated into a predetermined number of can lids to form a can lid group, which is flatly folded. The can lid group W is formed by inserting and storing the can lid group from the bag mouth Z in the bag supplied by. At this time, the bag mouth Z of the can lid package W is not yet closed, and when it is discharged from the bagging device 2, as shown in FIG. It is supported by the payout portion 7 with the Z side facing upward and inclined so as to be in a substantially upright state. The can lid package W supported by the dispensing section 7 is dispensed in the direction of the fold line X formed when it is folded flat, that is, in the direction orthogonal to the arrow shown in FIG. As shown in FIG. 1 and FIG. 3, it is supported by the payout unit 7.

As shown in FIG. 2, the folding device 1 is provided with a loading portion 8 for loading the can lid package W at the starting end and a dispensing portion 9 for dispensing the can lid packaging W at the end, respectively. A transport path 10 for transporting the lid package W in an upright state, folding stages 41, 44 for performing a folding operation of the bag mouth Z of the can lid package W transported along the transport route 10, and the folding stage 41. , 44 in cooperation with the work at 44, and an adhesive application device 12 for applying an adhesive to the bag mouth Z of the can lid package W. Furthermore, FIG.
As shown by the middle phantom line, the loading device 5 shown in FIG. 3 is provided at a position between the dispensing part 7 of the bagging device 2 and the loading part 8 of the folding device 1.

As shown in FIG. 2, the first folding stage 4
1, a pressing plate 42 and a folding plate 43 are provided so as to be able to advance and retreat in a direction in which they are opposed to each other and approach each other, and are equipped with cylinders 42a and 43a that drive the respective forward and backward movements. The second folding stage 44 includes a sleeve pressing plate 45 and a reversing plate 4.
6. Cylinders 45a, 46a, 47a, 48a are provided with a one-sided folding plate 47 and a pressure-bonding plate 48 that are radially opposed to each other and can move back and forth in a direction in which they approach each other.
Is equipped with. Further, the reversing plate 46 is reversible and has a motor 46b for driving the reversing movement. Also,
The crimping plate 48 can be raised and lowered, and its raising and lowering is performed by a raising and lowering device (not shown).

As shown in FIG. 3, the loading device 5 has a rail 13 extending between the payout portion 7 of the bagging device 2 and the loading portion 8 of the folding device 1, and along the rail 13. A column 15 that is erected on a slidable sliding member 14 so as to be swingable via a shaft 15a, a support frame 17 that is connected to the column 15 through a sliding rod 16 so that the column 15 can be moved forward and backward, and the support frame 17 Rotating frame 18 rotatably supported on
And a holding device 19 for the can lid package W provided on the rotating frame 18. The sliding member 14 slides along the rail 13 by a driving device (not shown), and the column 15 swings by a cylinder 20 provided on the sliding member 14. In addition, the support frame 17 is a pillar 1.
The cylinder 21 provided at 5 moves forward and backward, and the rotary frame 18 is rotated by a rotary drive device 22 provided above the support frame 17.

As described above, the bagging device 2 used in this embodiment has the payout direction in the direction of the fold line X formed when the bag of the can lid package W is flatly folded. Is. This is because, as shown in FIG. 1, it is considered that the folding devices 1 are connected to the sides of the bagging device 2 and are arranged in a substantially L-shape so that their installation locations are made relatively small. Is. Therefore, in order to realize the method of the present invention corresponding to the bagging device 2, the loading device 5 of the present embodiment needs to change the loading direction with respect to the payout direction of the can lid package W by the bagging device 2. Therefore, the above configuration was adopted.

The operation of the apparatus of the present invention having the above construction will be described. First, as shown in FIGS. 1 and 3, the can lid package W formed by the bagging device 2 has the bag mouth Z opened. It is paid out in a state and is supported by the payout part 7.

Next, as shown in FIG. 3, the loading device 5 located at a position facing the dispensing portion 7 loads the can lid package W into the transport path 10 of the folding device 1. At this time, as shown by the phantom line in FIG.
The support frame 17 is tilted corresponding to the can lid package W of the dispensing unit 7 by being swung by 0. Then, the support frame 17 is advanced toward the payout portion 7 by the cylinder 21, the can lid package W is gripped by the gripping device 19, and then the support frame 17 is retracted in the direction of the column 15.
Next, the column 15 is swung by the cylinder 20 to be in the upright state. Then, the sliding member 14 slides along the rail 13 toward the first folding stage 41 by a driving device (not shown), and further, the support frame 17 is advanced toward the payout portion 7 by the cylinder 21. The gripping device 19 releases the gripped state of the can lid package W and inserts the can lid package W into the loading section 8 of the folding device 1. When the sliding member 14 of the charging device 5 is sliding along the rail 13, the rotary frame 18 is rotated by 90 ° by the rotary drive device 22, as shown in FIG. 1. As a result, the transfer direction of the can lid package W is changed from the state when the can lid package W was in the payout section 7 of the bagging device 2. That is, as shown in FIG. 3, when the loading device 5 receives the can lid package W from the dispensing unit 7 of the bagging device 2, the bag is folded in the transfer direction of the can lid package W. When the fold line X was formed, the line that was aligned with the fold line X was transferred to the side where the fold line X was not formed, that is, in the direction indicated by the arrow in FIG. 4A by the rotation of the rotary frame 18. Like As a result, as shown in FIG. 2, the folding device 1
Even in the conveyance path 10 of FIG.

As shown in FIG. 2, the can lid package W that has been loaded into the transport path 10 by the loading device 5 is transported toward the first folding stage 41. Then, in the first folding stage 41, the pressing plate 42 and the folding plate 43 advance toward the can lid package W in a direction in which they approach each other. Then make the first fold and retreat. As a result, a part of the bag mouth Z of the can lid package W is folded, and
The state becomes as shown in (b). At this time, at this time, as described above, the can lid package W is conveyed in the direction of the arrow in FIG. 4A, that is, toward the side where the fold line X is not formed, so that the first folding is performed. When the operation is started, it is possible to directly fold the fold line X side and reliably prevent a fold defect or the like due to the influence of the fold line. Next, as shown in FIG. 2, the can lid package W is transported to the second folding stage 44. In the second folding stage 44, first, the sleeve pressing plate 45 advances to maintain the initial folded state. Then, the reversing plate 46 in the vertical state is advanced, and
(B) It contacts the inside of the bag mouth Z in the standing state shown. Subsequently, the one-sided folding plate 47 shown in FIG. 2 moves forward to fold a part of the bag mouth Z in the upright state. It becomes like FIG.4 (c). here,
An adhesive is applied to the outer surface of the bag mouth Z in which the adhesive applying device 12 shown in FIG. 2 is folded. Then, the reversal plate 46 becomes horizontal and becomes as shown in FIG. At the same time, as shown in FIG.
The sleeve pressing plate 45, the reversing plate 46, and the one-sided folding plate 47 retract, and the crimping plate 48 advances and descends to crimp and retract the bag mouth Z in the folded state.

The can lid package W thus closed is delivered to the delivery section 9 of the folding device 1.

In addition to the bagging device 2 used in this embodiment, for example, although not shown, the bagging device 2 is not shown.
The folding device 1 is linearly connected downstream of the bagging device 1, and the insertion direction is set with respect to the payout direction of the can lid package W by the bagging device 2 in order to realize the method of the present invention corresponding to the bagging device 2. Needless to say, the rotary frame 18 and the rotary drive means 22 may not be provided if conversion is not necessary.

[0021]

As is apparent from the above, according to the present invention, the folding work is started at the position of the fold formed on the bag of the can lid package, and the fold side is directly folded. It is possible to reliably prevent a folding defect due to the influence of the fold line.

Further, in the apparatus of the present invention, by providing the charging device, the can lid package can be made to face the first folding plate on the side of the bag on which the folds are formed. Can be realized. Further, for example, since it is possible to reliably prevent a folding defect due to the influence of the folds, only by providing the existing folding device with the feeding device, the structure is simple and the equipment cost can be suppressed low,
It is possible to quickly form a closed can lid package that is free from folding defects.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an installed state of an apparatus of this embodiment.

FIG. 2 is an explanatory plan view showing a part of the folding device of the present embodiment.

FIG. 3 is an explanatory side view showing a loading device of the folding device according to the present embodiment.

FIG. 4 is an explanatory view showing a part of a folding process of the opening of the can lid package by the folding device.

[Explanation of symbols]

W ... Can lid package, X ... Fold, 1 ... Folding device, 2 ... Bagging device, 5 ... Loading device, 19 ... Gripping means, 22 ... Rotating means, 43 ... First folding plate.

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65B ^7/ 00-7/28

Claims (2)

(57) [Claims] 1. A bag for closing a can lid package formed by inserting and storing a can lid group, which is formed by stacking a predetermined number of columns in a columnar shape, into a flatly folded bag from the bag mouth by folding the bag mouth several times. A method of folding a mouth of a can lid package, wherein the folding operation is started at a position of a fold formed on the bag of the can lid package. 2. A baggage device, which is provided downstream of a bagging device for forming a can lid package by inserting and accommodating a can lid group in which a predetermined number of columnar layers are stacked into a flatly folded bag from its bag mouth. Transport the can lid package delivered from the stand up,
A first folding plate projecting orthogonally to the conveying direction starts the first folding, and then a plurality of other folding plates closes the bag mouth of the can lid packaging body several times to close it. In the folding device of the bag mouth of the above, there is provided a charging device for charging the can lid package discharged from the bagging device so that the first folding plate performs the folding operation at the position of the fold formed on the bag. A device for folding a bag mouth of a can lid package, which is characterized in that