JP2764462B2 - Bag sealing device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a bagging and sealing apparatus for packing a solid product in a packaging bag and further sealing the product, and in particular, corresponds to products of various sizes. The present invention relates to a bag packing and sealing apparatus capable of performing bag packing, molding and sealing by a series of operations.

(Prior Art) Conventionally, as a bag-sealing device of this type, an object to be packaged, such as a web roll, is inserted using a busher into a packaging bag mounted on a conveying means and having one end opened. Then, while transporting this packaging bag, forming an opening forming portion,
Further, there has been known an apparatus in which a flat folded opening forming section is bent a plurality of times to be folded and sealed (for example, Re
search Disclosure, July 1979, p. 399).

(Problems to be Solved by the Invention) In the above-described conventional technology, the direction in which the packaged object is inserted into the packaging bag is the same as the direction in which the packaging bag is transported from the packaged object insertion step to the next step. I have. But,
If the opening of the packaging bag is oriented in the transport direction, it is difficult to form or bend the opening forming portion. By reloading the bag, the opening is directed to the side of the transport path.

However, when the packaging bag is reloaded from one transport path to another transport path as described above, it is difficult to improve the positioning accuracy. It is difficult to automate each step of molding and folding.

A first object of the present invention is to provide a bag-filling and sealing apparatus capable of automating the steps of forming, folding, etc. without performing positioning of the packaging bag again after inserting the article to be packaged into the packaging bag. To provide.

Further, in the above-described conventional technology, the opening forming portion of the packaging bag being transported is taken into a flat conveyor provided along the edge of the transport path, and is folded while the packaging bag is transported. It has become. However, if the folding process is performed while the packaging bag is moved as described above, there is a problem that the folding may be bent and the folding cannot be performed accurately. On the other hand, when carrying out each processing, the transportation of the packaging bag is stopped, and when each processing is completed, the transportation is started again. May be distorted. For example, in the case of performing a plurality of folds, the fold shape of the opening forming portion of the packaging bag formed by the previous fold processing while transporting the packaging bag to the next fold processing position after the previous fold processing. This causes the next folding process to be hindered.

A second object of the present invention is to perform a plurality of folding processes, in which each folding process can be performed accurately with the packaging bag stopped, and formed by the previous folding process. An object of the present invention is to provide a bag packing and sealing apparatus capable of transporting a packaging bag to a next folding processing position without breaking the folding shape of the packaging bag.

(Means for Solving the Problems) The bag-filling and sealing apparatus of the present invention comprises a step of inserting a packaging bag into an object to be packaged, an opening forming section forming step, a first opening forming section folding step, and a second opening forming section folding section. Conveyor means for performing intermittent conveyance for stopping the packaging bag when performing processing in each step while sequentially transporting to the process, and opening in a direction substantially orthogonal to the transport direction of the packaging bag in the packaged object insertion step. A packaged object insertion means for inserting the packaged object through the opening from the orthogonal direction with respect to the packaging bag arranged so as to have: and the package bag is folded in the first opening forming section folding step. Thereafter, when the package is conveyed to the second opening forming section folding process for further folding, the package bag folded state performed in the first opening forming section folding process is maintained and the package bag is folded in synchronization with the transport operation. Up to 2 opening forming section folding process And a moving holding means for moving.

The first and second opening folding steps refer to any two adjacent opening folding steps when three or more opening folding steps are provided side by side in the packaging bag transport direction. . In addition, as described in FIG. 3, the folding means that the opening forming portion of the bag formed into a flat state by the opening forming portion forming step is moved from the front end side to the rear side (right side in FIG. 3). It means to wrap around.

(Operation) In the bag packing and sealing device, in the package insertion step, the opening of the packaging bag is arranged on the conveyor means so as to face sideways, and the opening is formed in a direction orthogonal to the conveying direction of the packaging bag. Is inserted into the packaging bag, and then the packaging bag is conveyed to the opening forming section forming step on the belt conveyor means in this posture. Therefore, once the packaging bag is positioned in the package insertion step, there is no need to position the packaging bag again in the opening forming section forming step or the opening forming section folding step, and a smooth automation process can be performed.

Further, in the above-mentioned bag-filling and sealing apparatus, in the case of performing the folding process a plurality of times (at least twice), since the folding process is performed by stopping the packaging bag, each folding process is performed with high accuracy. Also, when the packaging bag is transported from the previous folding process to the next folding process, the next folding while maintaining the folding shape of the packaging bag formed by the previous folding process. Since the packaging bag is transported to the processing process,
During the transport of the packaging bag, the fold shape is not lost, so that the fold processing in the next fold processing step can be reliably performed.

(Embodiment) Hereinafter, a bag filling and sealing apparatus of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic perspective view showing a bag filling and sealing apparatus according to one embodiment of the present invention. This device is a bucket conveyor 1
Is a product insertion step 2, an opening forming section forming step 3, a first opening forming section folding step 4, and a second opening forming section folding step 5.
It is arranged so as to sequentially pass through each process of
The bags 6 placed and positioned on the bucket conveyor 1 are sequentially conveyed to the above-mentioned respective steps, and are stopped at each step to perform a predetermined process. That is, when the bag 6 supplied into the apparatus is placed on the bucket conveyor 1, the bag 6 is positioned on three sides by the two side positioning guides 7, 8 and the bottom positioning guide 9. The bucket conveyor 1 is composed of two flexible belts which are adjacent to each other in the width direction and move in synchronization with each other. One side positioning guide 7 is provided on one belt and the other side positioning guide 8 is provided on the other side. Is fixed to the other belt. By moving these two belts relatively to each other in the longitudinal direction at the time of initial setting, two side positioning guides 7, 8 are provided.
Can be changed, so that it is possible to perform positioning in the width direction corresponding to bags 6 of different sizes. The bottom positioning guide 9 is movable in the width direction of the bucket conveyor 1 so that the bottom can be positioned corresponding to bags 6 of different sizes. When the bag 6 is positioned, the belt wheel 1a that drives the bucket conveyor 1 rotates in the direction of arrow A, and the bucket conveyor 1 transports the bag 6 to the product insertion step 2. At this time, the bottom positioning guide 9 moves in the bag conveying direction in synchronization with the bucket conveyor 1, so that the bag 6 is conveyed to the product insertion step 2 in a state where it is securely positioned. When the bag 6 is set in the product insertion step 2,
The movement of the bucket conveyor 1 stops, and the opening forming portion of the bag 6 is sucked upward by a plurality of bag opening suction cups 10 and lifted upward, and the lower side is formed by a plurality of bag suction suction cups 15. The opening is greatly opened by being sucked. At this time, the lower side of the bag is strongly pressed by the plurality of clamps 14. In this way, the product 12 formed in a roll shape is inserted into the bag 6 with the opening of the bag 6 largely opened. That is, as shown in FIG. 1, the product 12 is placed on the product conveyor 18 arranged on the side of the bucket conveyor 1 at the position of the product insertion step 2, and the pusher is moved with the movement of the product conveyor 18. It is transported in the direction of arrow B while being supported on both sides by 13 side plates 11,
Finally, the pusher 13 is extended, and the product 12 is inserted to the back of the bag 6. Note that the product conveyor 18 is inclined so as to descend as it goes in the direction of arrow B, and the bucket conveyor 1 is also inclined such that it descends from the bag opening direction toward the bottom. Thereafter, the bag 6 can be transported to the next step without changing the direction of the bag. In addition, the bottom of the bag 6 is expanded as the product 12 is inserted into the bag 6, so that the bottom is shifted in the direction of the opening (the state shown by the two-dot chain line). The part 16 is extended in the direction of arrow D to form the bottom of the bag 6. It should be noted that when the bottom forming plate 16a located at the same level as the bottom forming portion 16 moves in the direction of arrow C and the bottom forming is completed, the bottom forming portion 16 retreats and the bottom is positioned by the bottom forming plate 16a. Has become. When all the processes in the product insertion process 2 are completed in this way, the bucket conveyor 1 operates, and the bag 6 is conveyed to the opening forming portion forming process 3 in a positioned state. At this time, the product lateral transfer section 17 moves in the direction of the arrow E in synchronization with the bucket conveyor 1, and conveys the bag 6 while supporting the bottom of the bag 6 to a position where the bottom of the bag 6 can be positioned by the transfer conveyor 53.
After the bottom of the bag 6 is transferred to the transfer conveyor 53, the bottom forming plate 16a is retracted, and the product horizontal transfer unit 17 returns to the position of the product insertion step 2 and waits for the next product insertion.

When the bag 6 is set to the opening forming portion forming step 3, the movement of the bucket conveyor 1 is stopped, and the opening forming portion of the bag 6 is formed by the opening forming portion forming means. That is, the opening forming portion forming means comprises six forming claws 21 which move in the lateral direction in conjunction with each other, and a forming plate 22 which clamps the opening forming portion from above and below to flatten the opening forming portion. When the bag 6 is set in the opening forming portion forming step 3, the opening forming portion forming means is extended in the direction of the bag 6, and four upper and lower forming claws 21 are placed inside the bag 6, and two middle forming claws 21 are formed. 21 is bag 6
Is located outside. The molding claw 21 located inside the bag 6 moves so as to pull the side of the bag 6 outward, while the molding claw 21 located outside the bag 6 moves to push the side of the bag 6 inward. Then, the opening forming portion of the bag 6 is folded into a substantially flat state, and in this state, the two forming plates 22 press and clamp the opening forming portion from above and below, whereby the opening forming portion of the bag 6 is completely flattened. Molded into a state. When the forming of the opening forming portion is completed in this way, the bucket conveyor 1 operates and the bag 6
Is transported to the first opening folding step 4 in a positioned state. At this time, the transfer conveyor 53 is the bucket conveyor 1
To support the bottom of the bag 6.
The transfer conveyor 53 is driven by a drive motor 51. When the rotation shaft of the motor 51 rotates in the direction of arrow F, the auxiliary belt 54 rotates the two-stage belt wheel 52, thereby causing the two-stage belt wheel 52 to rotate. The transfer conveyor 53 stretched between the belt wheel 55 and 52 moves. At this time, the belt wheel 55 rotates in the direction of arrow G.

When the bag 6 is set to the first opening forming section folding step 4, the movement of the bucket conveyor 1 is stopped, and the opening forming section is folded by the opening forming section folding means. That is,
As shown in FIG. 2, the opening forming portion folding means comprises a bag clamp 41, a folding guide 61, a folding knife 62, a bag holder 64, and the like, and the folding process is as shown in FIG. It is done in. As shown in FIG. 3 (a), the flattened opening forming portion 63 is pressed by the bag presser 64. In the previous stage, the bag presser 64 is flipped up, but the operation of the cylinder 66 attached to the bag presser plate 65 causes the bag presser 64 to rotate about the rotating shaft 64a, so that the tip end 64b of the bag presser 64 is opened. Will be located along the upper surface of. Next, as shown in FIG. 3 (b), the folding guide 61 and the folding knife 62 are raised, and the tip of the bag holder 64 is moved.
The tip 63a of the opening forming portion 63 that is not held down by 64b
Are bent at right angles. Next, as shown in FIG. 3 (c), a plurality of sets of upper and lower clamps 41a and 41b (both of which constitute a bag clamp 41) are arranged in a horizontal direction, and a clamp portion is extended to each upper and lower clamp 41a. , 41b pass through the groove 62a of the folding knife 62 provided.
Thereafter, while each lower clamp 41b advances along the lower surface of the opening forming portion 63, each upper clamp 41a rotates around the rotating shaft 41c and descends, and pushes the upright tip 63a of the opening forming portion 63. Proceed while bending. When the movement of the clamp portion is stopped, the distal end 63a of the opening forming portion 63 is completely bent by the clamping force of the upper and lower clamps 41a and 41b via the distal end portion 64b of the bag holder 64, and the first opening of the opening is formed. The folding process ends. A plurality of bag clamps 41 are provided for bags 6 of various sizes.
On the other hand, the folding process can be performed without changing the interval between the bag clamps 41. After this, bag holder 64
Returns to the original position (FIG. 3 (d)). When the first-stage folding process is completed, the bucket conveyor 1 is operated, and the bag 6 is positioned and the second opening forming portion folding process 5 is performed.
Transported to Incidentally, the bag clamp 41 is disposed on a transfer means as shown in FIG. That is, each bag clamp 41 is arranged on a clamp plate 67, and the clamp plate 64 is mounted on a front-rear direction movable table 68 that slides on a guide 69.
69 is mounted on a horizontal transfer table 70 that slides on the guide 71. Therefore, when the folding process is performed as described above, the front-rear direction moving table 68 is extended forward. On the other hand, the bag 6 is folded in the first opening forming section
The horizontal moving table 70 is configured to slide on the guide 71 in the direction of arrow H in FIG. The opening forming portion 63 of the bag 6 is conveyed to the second opening forming portion folding step 5 while being held by the bag clamp 41. Therefore, the shape of the fold is not distorted during the conveyance, and the processing in the second opening forming section fold step 5 is smoothly performed.

In the second opening forming section folding step 5, an opening forming section folding means substantially similar to that of the first opening forming section folding step 4 is provided, whereby the second stage folding processing is performed. It is. After the folding process, the opening forming portion 63 is bonded to the front surface of the bag 6 with an adhesive. The folding process may be performed three times or more.
The number of opening forming section folding steps to be provided is changed.

According to the above-described embodiment apparatus, the fold of the opening forming portion 63 of the bag 6 can be processed with good appearance and surely, and it is possible to immediately respond to the bags 6 of various sizes without making troublesome setting changes. can do. In addition, at the same time, it is possible to perform predetermined processing on different bags 6 in each step, so that the cycle time of a series of operations can be reduced.

The bag packing and sealing device of the present invention is not limited to the above-described embodiment, and various modifications can be made. For example, in the apparatus of the above-described embodiment, in the product insertion process 2, the suction cup is formed only in the opening forming portion 63 of the bag 6.
The upper and lower surfaces are separated using 10, 15
It is also possible to open the vicinity of the bottom using a suction cup, whereby the resistance of the product at the time of product insertion can be reduced, and the damage on the product surface can be reduced. Further, a mechanism for holding the gusset portions at both ends of the opening forming portion of the bag 6 is provided.
It is also possible to ensure that the molding of 63 can be performed. Further, it is of course possible to partially use those used in the prior art as the opening forming portion forming means and the opening forming portion folding means.

The apparatus of the present invention is applicable not only to rolls but also to bagging of solids in the shape of, for example, a rectangular parallelepiped.

(Effects of the Invention) As described above, according to the bag filling and sealing apparatus of the present invention, the opening of the packaging bag is directed to the side on the conveyor means in the process of inserting the packaged object. Since the product is inserted into the packaging bag from a direction perpendicular to the transport direction, it is possible to perform a smooth process in the next step without changing the direction of the bag.

In addition, since the fold shape of the packaging bag processed by the first folding process is conveyed to the next second fold step while maintaining the shape, during the transportation of the packaging bag, The folding process in the next step can be smoothly performed without the folded shape being deformed.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a bag filling and sealing apparatus according to one embodiment of the present invention, FIG. 2 is a perspective view showing a part of the apparatus shown in FIG. 1 taken out, and FIG. It is the schematic for demonstrating each procedure in the opening forming part folding process shown in a figure. DESCRIPTION OF SYMBOLS 1 ... Bucket conveyor, 2 ... Product insertion process 3 ... Opening forming part forming process 4 ... 1st opening forming portion opening folding process 5 ... 2nd opening forming portion opening folding process 6 ... Bag 7,8 ... ... Side positioning guide 9 ... Bottom positioning guide 10 ... Suction cup for bag opening 12 ... Product, 13 ... Pusher 15 ... Suction cup for bag suction 17 ... Product lateral transfer part, 18 ... Product conveyor 21: Forming claw, 22: Forming plate 41: Bag clamp, 53: Transfer conveyor 61: Folding guide, 62: Folding knife 63: Opening forming part, 64: Bag holder 68: … Front and rear, 70 …… horizontal

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-48-97696 (JP, A) JP-A-3-162209 (JP, U) JP-A-2-25403 (JP, U) JP-A 64-64 26202 (JP, U) JP-B-38-16548 (JP, B1) (58) Field surveyed (Int. Cl. ⁶ , DB name) B65B 5/00-5/12 B65B 7/00-7/28 B65B 51/00-51/32

Claims (1)

(57) [Claims] When the packaging bag is sequentially transported to an article to be packaged, an opening forming section forming step, a first opening forming section folding step and a second opening forming section folding step, and the processing is performed in each step. Conveyor means for performing intermittent conveyance for stopping the packaging bag, and in the packaged object insertion step, the packaging bag arranged so as to have an opening in a direction substantially perpendicular to the transport direction of the packaging bag. Means for inserting an object to be packaged through the opening from the direction in which the package is opened, and a second opening forming part folding step for further folding after folding the packaging bag in the first opening forming part folding step. In the first opening forming section folding step, while maintaining the folded state of the packaging bag in the first opening forming section folding step, in synchronization with the transport operation.
A bag-sealing device, comprising: a moving holding unit that moves to an opening forming unit folding process.