JP2002068108A - Apparatus for folding mouth of packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for folding a mouth of a package bag capable of forming a habit of folding the mouth of the package bag filled with a culture medium, and of nicely preventing the bag mouth from uplifting due to folding back of the bag mouth. SOLUTION: The apparatus for folding the mouth of the packaging bag is equipped with a conveying mechanism 2 for conveying upward the bag mouth P1 of the packaging bag P filled with the culture medium B, a folding back and holding mechanism 21 provided in the course of the conveying passage of the conveying mechanism 2 and capable of folding in the bag mouth P1 in the top of the opening part of the packaging bag P in the horizontal direction nearly along the top surface side of the culture medium B when the packaging bag P is conveyed to a prescribed position, an auxiliary folding in and holding mechanism 23 which auxiliarily and restrictively holds both lateral parts of the bag mouth P1 folded in the horizontal direction to both lateral sides of this folding back and holding mechanism 21, and a bag mouth ear part erecting mechanism 28 for vertically erecting and folding in each bag mouth ear parts P2 protruded from both lateral sides of the base of the bag mouth P1 folded in the horizontal direction and folding in the bag mouth ear parts P2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for filling a culture medium containing a large amount of sawdust or rice bran and containing various nutrients into a bag made of a plastic film. The present invention relates to a bag mouth folding device for folding back.

[0002]

2. Description of the Related Art Conventionally, as a method for artificially cultivating mushrooms using a culture medium containing a sawdust or rice bran as a main component and a nutrient source, a culture medium is filled in a cultivation bottle, sterilized, and the filled cultivation is performed. After inoculating seeds of mushrooms such as enoki mushroom and maitake in the bottle, cap the mouth of the cultivation bottle and close it, and cultivate the bacteria under predetermined temperature and humidity conditions for industrial cultivation. Or, the culture medium is filled into a plastic bag, and the bag opening of the filled packaging bag is folded back to the side of the bag to shape and maintain the shape of the bag.In this state, the culture medium together with the bag is sterilized. A method of inoculating a seed bacterium in the sterilized packaging bag, culturing the bacterium under predetermined temperature and humidity conditions, and cultivating the bacterium industrially is used.

[0003] In the former case, cultivation of enoki mushrooms and the like is performed according to the diameter of the mouth of the cultivation bottle. Cannot be applied because it is not suitable. Therefore, in the artificial cultivation of shiitake mushroom, nameko, etc., the latter plastic packaging bag is used.

[0004] In the former case, after the mushroom is harvested, the culture medium inside the cultivation bottle is scraped out and the cultivation bottle is washed, so that the cultivation bottle can be repeatedly used. Due to such a problem, in recent years, the demand for the latter packaging bag, which is disposable, has been increasing.

[0005] As a work of packing the culture medium into the packaging bag, generally, the bag mouth of the packaging bag is spread and filled with a predetermined amount of the culture medium therein, and the upper surface thereof is pressed into a cylindrical shape. At the center of the upper surface, an inoculation hole is formed via a push rod or the like, so that the culture medium is filled and press-molded to perform bag packing.

[0006] In addition, the packaging bag in which the culture medium is packed is folded back to the side of the packaging bag to shape and maintain the shape of the bag. In this state, the culture medium together with the bag is sterilized. In order to prevent invasion of various bacteria and dust into the packaging bag before the inoculation of the seed bacteria into the packaging bag, it is necessary to turn the bag opening of the packaging bag sideways and close it.

[0007]

By the way, conventionally, in the bag opening folding operation for folding the bag opening of the packaging bag, since the bag opening is turned back manually, labor is required and it is a manual operation. Therefore, there is a problem in that mass production is hampered, and moreover, a large number of workers are required in order to increase productivity because of relying on human labor.

In recent years, techniques for artificial cultivation of this kind of mushrooms have been advanced, and a method has been proposed in which the handling of the culture medium and the inoculation process are mechanized to uniformly produce the mushrooms in a uniform manner. As a device for folding back the bag mouth, for example, Japanese Patent Application Laid-Open Nos. 5-294302 and
As proposed in, for example, Japanese Patent Application Laid-Open No. 144444/1999, there has been considered a configuration in which a bag mouth is pressed to be folded along a side portion of a packaging bag.

In the mechanism for folding back the bag mouth of the packaging bag filled with the culture medium, the bag mouth is flattened from the outside of the bag mouth, and the bag mouth of the packaging bag is folded from the outside side to close the closing device. While pressing and pushing down the bag mouth of the bag by pressing the tip of the bag mouth against the outer periphery of the side of the bag coated with hot melt, the bag mouth is closed.
Since the packaging bag itself is a flexible material, the bag mouth is bent when filling the culture medium into the packaging bag, the bag mouth is partially inclined, or the shape of the bag mouth is almost constant. If the bag is sandwiched and folded from the outside on the outer side of the bag mouth in a state where the shape is not fixed, there is a problem that the opening at the upper end side of the bag mouth cannot be fixed in a flat shape.

[0010] Therefore, the form of folding of the bag mouth performed in the next process procedure varies, and in some cases, the folding operation may not be performed well and the bag mouth may be partially bent. There is a concern that dust and dust may enter the packaging bag through the bag opening.

Therefore, the present invention has been made in view of the above-mentioned problems, and in particular, it is possible to add a folding habit to a bag mouth of a packaging bag filled with a culture medium, and the bag by folding the bag mouth is provided. An object of the present invention is to provide a bag opening device for a packaging bag capable of favorably preventing the rising of the mouth.

[0012]

According to a first aspect of the present invention, there is provided a transport mechanism for transporting a bag opening of a packaging bag filled with a culture medium upward, and provided on a transport path of the transport mechanism. When the packaging bag is conveyed to a predetermined position, a folding and holding mechanism that horizontally folds a bag opening at an upper end opening portion of the packaging bag substantially along the upper surface side of the culture medium, and both ends of the folding and holding mechanism An auxiliary folding and holding mechanism for supplementarily regulating and holding both side end portions of the bag mouth folded back in the horizontal direction; and a base side of the bag mouth folded horizontally by the folding holding mechanism and the auxiliary folding holding mechanism. A bag mouth folding device for a packaging bag, comprising: a bag mouth ear rising mechanism for vertically rising and folding each bag mouth edge protruding from both sides.

[0013] According to a second aspect of the present invention, in the first aspect of the present invention, the opening mechanism of the bag mouth is inclined with respect to the center of the packaging bag. It is a folding device.

According to a third aspect of the present invention, there is provided a bag opening and closing device for a packaging bag according to the first or second aspect, wherein the mounting position of the folding and holding mechanism is provided so as to be vertically movable. .

According to claim 4, claims 1 to 3 are provided.
, Wherein the mounting position of the auxiliary folding and holding mechanism is provided so as to be movable and adjustable in vertical and horizontal directions.

In claim 5, claims 1 to 4 are provided.
In a post process of the folding and holding mechanism, a bag mouth edge for folding back the edge portion of the bag mouth horizontally folded by the folding and holding mechanism toward the side surface of the packaging bag filled with the culture medium A bag mouth folding device for a packaging bag, comprising a folding mechanism.

In claim 6, claims 1 to 5 are provided.
In the preceding step of the folding and holding mechanism, the paired arms are inserted from the opening of the bag inside the bag opening inside the bag opening at the upper end opening of the packaging bag, and are expanded outward to support the bag opening flat. A bag mouth folding device for a packaging bag, comprising a bag mouth flat support mechanism transport mechanism.

[0018]

According to the first aspect of the present invention, when a packaging bag filled with a culture medium is transported to a predetermined position by being placed on a transportation mechanism, the bag opening at the upper end opening of the packaging bag is folded. The holding mechanism and the auxiliary folding holding mechanism are horizontally folded back and held substantially along the upper surface side of the culture medium in the packaging bag, and both sides of the bag mouth that is folded and held horizontally are held at the base side of the bag mouth. The bag mouth edge protruding from the portion is raised and folded by the bag mouth edge rising mechanism, so that the vertical folding habit and the bag mouth folded in the horizontal direction are formed by the rising shaping of the bag mouth edge. The fold is formed with the fold of the fold, so that it is possible to maintain the folded state at the end of the bag mouth which is first folded in the horizontal direction of the bag mouth, and suppresses the rising of the bag mouth. It is.

According to the second aspect of the present invention, in the first aspect, the bag-mouth-ear-starting mechanism is arranged to be inclined in a direction toward the center of the packaging bag.
Further, it is possible to favorably maintain the vertical folding habit, and it is possible to suppress the rising of the bag mouth of the packaging bag.

According to the third aspect of the present invention, in the first or second aspect, the mounting position of the folding holding mechanism is provided so as to be vertically movable.
Since the folding and holding mechanism can be adjusted and moved according to the capacity of the culture medium filled in the packaging bag, the bag mouth can be neatly folded along the upper surface side of the culture medium.

According to the fourth aspect of the present invention, in the first to third aspects, the mounting position of the auxiliary folding holding mechanism is provided so as to be movable up and down and left and right, so that the packing bag can be filled. The folding holding mechanism can be adjusted and moved according to the volume of the culture medium to be
The bag mouth opening portion is vertically folded by the bag mouth opening mechanism, and the folding position of the bag mouth ear is arbitrarily moved and adjusted according to the vertical folding habit, thereby folding the bag mouth. It can be performed well.

According to the fifth aspect of the present invention, in any one of the first to fourth aspects, in the post-process of the folding holding mechanism,
By providing a bag mouth edge folding mechanism for folding the edge portion of the bag mouth horizontally folded by the folding holding mechanism toward the side surface of the packaging bag filled with the culture medium, the bag mouth edge folding mechanism is provided in the horizontal direction. The edge portion of the bag mouth folded back is folded back toward the side surface of the packaging bag by the bag mouth edge folding mechanism, whereby there is an effect that the rising of the edge portion of the bag mouth can be further suppressed.

[0023] In the invention of claim 6, according to any one of claims 1 to 5, in the step before the folding and holding mechanism, the bag opening inside the bag opening at the upper end opening of the packaging bag. By providing a bag-mouth flat support mechanism that inserts a pair of arms and expands outward to open and open the bag mouth flat, the bag-mouth flat support mechanism preliminarily opens the bag mouth before folding it horizontally. By supporting the mouth in a state where it is straightened in a straightened state, it becomes easier to apply a folding habit in advance, so that the bag mouth can be folded in a more stable state, and in addition, the bag mouth can be folded. By attaching the bag, the bag can be folded in a state where the bag is aligned, and the lifting is suppressed. In this case, the pair which becomes the bag-port flat support mechanism in a direction orthogonal to the transport direction of the transport mechanism is provided. Make up The by becoming set to be expanded, in conjunction with a feeding operation of the packaging bag filled with culture medium, it is possible to guide folding the bag mouth of the packaging bag.

[0024]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The schematic configuration and operation of the folding device for the bag mouth of the packaging bag filled with the culture medium according to the present invention will be described with reference to the overall configuration of the bag mouth folding device using the round packaging bag filled with the culture media shown in FIGS. This will be described in the schematic diagram shown. In this embodiment, an endless transport conveyor 2 composed of a transport mechanism for supplying a round packaging bag P filled with a culture medium B is provided at the upper end side of the main body frame 1 of the bag mouth folding device. In this case,
As the endless transport conveyor 2, rollers 3 are provided at both ends of the main body frame 1, and an endless transport belt 4 is stretched around the rollers 3; A drive motor 5 for rotating the roller 3 is connected to the drive motor 3.

When the packaging bag P, which is provided in the middle of the transportation conveyor 2 and is filled with the culture medium, is intermittently transported to a predetermined position, the bag opening P1 of the packaging bag P is cleaned. A bag-mouth flat support mechanism 6 is provided as a pre-process for facilitating folding into the bag. The bag-mouth flat support mechanism 6 is provided on the inner side of the bag mouth P1 at the upper end opening of the packaging bag P. A pair of arms 7 is inserted from the opening side of P and is expanded outward to form the bag opening P1 in a flat state.

As the bag-mouth flat support mechanism 6, a pair of cylinder mounting substrates 8 are fixed to one of the main body frames located on both sides of the transport conveyor 2 as the transport mechanism. The cylinder 9 is mounted and fixed in the vertical direction, and a support plate 10 is stretched over and fixed to the piston of each cylinder 9 along the width direction of the transfer conveyor 2 as the transfer mechanism. Is configured to move up and down on a shaft support provided on the cylinder mounting board 8 via a guide rod 10A by the operation of the cylinder 9, and oppose each other at both ends located above the support plate 10. A pair of expansion cylinders 11 are fixed so that the arms 7 are attached and fixed to the distal ends of the pistons of the cylinders 11, respectively. Ri each diverge migrate toward the pair of arms 7 from the central portion to the both-side cylinder 11
The return operation is performed by the return operation so that the arm 7 approaches.

A bag opening P1 formed in a flat state by the bag opening flat support mechanism 6 is provided on the downstream side in the transport direction of the conveyor 2 with respect to the bag opening flat support mechanism 6.
A first folding and holding mechanism 12 for folding a portion substantially along the upper surface side of the culture medium B filled in the packaging bag P is provided, and the first folding and holding mechanism 1 in this embodiment is provided.
Reference numeral 2 denotes the movement of the packaging bag P filled with the culture medium B loaded and transported on the transport conveyor 2 as a transport mechanism in a positional relationship slightly higher than the height of the culture medium B filled in the packaging bag P. The bag opening P is formed in a state of standing upright by the bag opening flat support mechanism 6.
It is configured such that one portion is regulated while being pressed down from the upper surface side of the bag mouth P1 by a substantially flat regulating and holding plate 13 which is guided back substantially along the upper surface side of the culture medium B filled in the packaging bag P. ing.

As the first folding holding mechanism 12, a mounting plate 14 is fixed to the main body frame 1 located on both sides of the transporting conveyor 2 which is the transporting mechanism. Conveyor 2 is a transport mechanism
The flat regulation holding plate 13 is fixed to the distal end of the piston of each cylinder 15 via an attachment stay 16 along the longitudinal direction of the cylinder.

When the pair of arms 7 provided on the bag-mouth flat support mechanism 6 are operated, the first folding holding mechanism 12 forms the pair of arms 7 from the opening side of the packaging bag P.
When the bag opening P1 is inserted and opened outward to form the bag opening P1 in a flat state, the cylinder 15 provided in the first folding holding mechanism 12 is operated to operate the base of the bag opening P1 of the packaging bag P. The side of the packaging bag P1 is pressed down by a flat regulating holding plate 13 along the outer side surface portion of the bag opening P1 which is formed in a flat state so that the side portion does not spread. The base portion of the bag mouth P1 is shaped and held.

Further, on the upstream side in the transport direction of the transport mechanism 2 with respect to the bag-mouth flat support mechanism 6, the bag mouth P 1, which is formed into a flat state by the bag-mouth flat support mechanism 6, is placed in the packaging bag P. A bag opening shaping mechanism 17 for narrowing down and shaping substantially along the upper surface side of the culture medium B filled therein is provided, and the bag opening shaping mechanism 17 in this embodiment is provided.
Is a bag opening P that is formed in a state of standing upright by the bag opening flat support mechanism 6 in a positional relationship slightly higher than the height of the culture medium B filled in the packaging bag P.
The bag mouth P1 is formed and held by a substantially flat shaping plate 18 which presses the outer surface portion of the bag 1 substantially along the upper surface side of the culture medium B filled in the packaging bag P.

An attachment panel 19 is fixed to the bag opening shaping mechanism 17 at one position of the main body frame located on both sides of the conveyor 2 serving as the transport mechanism with reference to the bag opening flat support mechanism 6. Cylinders 20 each serving as a driving unit are fixed to both sides of the mounting panel 19, and the flat shaping plate 1 is attached to a tip end of a piston of each cylinder 20.
8 is fixed.

When the pair of arms 7 provided in the bag-mouth flat support mechanism 6 are operated, the bag-mouth shaping mechanism 17
When the paired arms 7 are inserted from the opening side of the packaging bag P and expanded outward to form the bag opening P1 in a flat state,
Each of the shaping plates 18 attached to the cylinder 20 so that the base side of the bag mouth P1 of the packaging bag P does not spread by operating the cylinder 20 provided in the bag mouth shaping mechanism 17.
By pressing down along the outer side surface portion of the bag opening P1 which is made in a state of standing in a flat state, the base portion of the bag opening P1 of the packaging bag P is adjusted and shaped and held. At this time, since the pressure is regulated from the upper surface side of the bag mouth P1 by the regulation holding plate 13 by the first folding and holding mechanism 12, the bag mouth shaping mechanism 17 and the first The base side of the bag mouth P1 is shaped and held in a flat state by pressing the bag mouth P1 from both outside surfaces by the folding holding mechanism 12.

Next, after the cylinders 15 and 20 of the first folding and holding mechanism 12 and the bag mouth shaping mechanism 17 are returned, the culture medium B placed on the conveyor belt 4 as the conveyor 2 operates. Is transported along the transport of the conveyor belt 4 and the first folding mechanism 12 disposed above the transport conveyor 2 moves as the packaging bag P moves with the transport. The bag opening P1 of the packaging bag P is moved to the culture medium B in the packaging bag P by the regulation holding plate 13.
The bag opening P1 is folded in a horizontal state in a state where the bag opening is beautifully aligned.

Further, on the unloading side of the transport conveyor 2 from the position where the first folding and holding mechanism 12 is installed, that is, in this embodiment, the regulating holding plate provided on the first folding and holding mechanism 12 13 on the unloading side,
A second folding / holding mechanism 21 is provided. In the present embodiment, the second folding / holding mechanism 21 is provided in a position slightly higher than the height of the culture medium B filled in the packaging bag P. The mounting plate 1 fixed to the frame 1
4 with respect to the frame 14A bridged over the upper end of
Is mounted so as to be movable in the vertical direction, and the opening P1 of the packaging bag P is moved by the second regulation holding plate 22 to the culture medium B in the packaging bag P.
Is held in a state of being folded back in the horizontal direction following the upper surface of the culture medium B. In this case, the culture medium B is adjusted in accordance with the capacity of the culture medium B, that is, the height of the culture medium B filled in the packaging bag P. The mounting position of the second regulation holding plate 22 is finely adjusted and fixed to the frame 14A.

On both ends of the second folding and holding mechanism 21, that is, on both ends of the second regulating and holding plate 22, the both ends of the bag opening P1 folded back in the horizontal direction are supplementarily provided. An auxiliary folding holding mechanism 23 for regulating and holding is provided.
The auxiliary plate 24 is installed so as to be located slightly above the installation position of the regulation holding plate 22. The auxiliary plate 24 is attached to the frame 14A so as to be movable and adjustable in the vertical and horizontal directions. I have.

Further, a bag mouth edge folding mechanism for folding the edge portion of the bag mouth P1 folded in the horizontal direction to the side of the packaging bag P separately from the second folding holding mechanism 21. 25, the bag mouth edge folding mechanism 2
5, an edge fold plate 26 that folds along the side portion of the packaging bag P on the front side of the second regulation holding plate 22 that holds the bag mouth P1 that is folded in the horizontal direction.
Are provided so as to be able to move up and down. In this embodiment, the edge turning plate 26 of the bag edge turning mechanism 25 is attached to the support plate 10 which constitutes a part of the bag opening flat support mechanism 6. It is fixed and held via the attached mounting stay 27 and is provided so as to be able to move up and down by also serving as an operation of the cylinder 9 for moving the support plate 10 up and down. A cylinder or the like serving as a driving means for operating the edge turning plate 26 of the mechanism 25 may be separately provided and driven.

The bag opening P1 is held along the upper surface side of the packaging bag P by the second regulating holding plate 22 and the auxiliary plate 24, and the bag opening P1 is held in the holding state on the upper surface side. A pair of bag mouth ear rising mechanisms 28 are provided to vertically lift and turn the bag mouth ears P2 protruding from both sides of the base side of the bag mouth P1 folded horizontally.

[0038] The bag mouth / ear start-up mechanism 28 includes:
A pair of cylinders 2 are provided at appropriate places on both ends of a frame 14A which is positioned on both sides of the transport conveyor 2 and is bridged over the upper end of the mounting plate 14 which is mounted and fixed to the main body frame 1.
9 are attached and fixed in the vertical direction.
No. 9 through the plate 30 to the ear-folding operation plate 3
1 is fixed, the guide rod 32 attached to the plate 30 is inserted through the frame 14A and supported by the shaft, and the ear folding operating plate 31 moves up and down together with the plate 30 with the operation of the cylinder 29. During the upward movement, the bag mouth ears P2 protruding from both sides of the base side of the bag mouth P1 are raised by the ear folding operation plate 31 of the bag mouth ear rising mechanism 28. Folded back, and the next packaging bag P
Is stopped in a standby state until is supplied.

Further, in the bag-mouth opening mechanism 28 in this embodiment, when the ear-folding operation plate 31 moves up and down, the bag-mouth edge P2 of the packaging bag P is located at the center of the packaging bag P. A part of the frame 14A is provided in a state of being inclined at a predetermined angle so as to be raised and folded in an inclined state, and an ear-folding operation plate of the bag mouth-ear raising mechanism 28 is provided on the frame 14A. Including the cylinder 31, the cylinder 29, the plate 30, and the guide rod 32 are attached and fixed in an inclined state.

At this time, the bag mouth ears P2 protruding from both sides of the base side of the bag mouth P1 are raised and folded back by the ear folding operating plate 29 of the bag mouth ear rising mechanism 26. By the rising and shaping of the ear part P2, a vertical folding habit and a folding habit of the folded portion of the bag mouth P1 folded in the horizontal direction are attached, whereby the bag mouth P1 is first folded in the horizontal direction. It is possible to maintain the folded state of the bag mouth end side, and the bag mouth P
1 is suppressed.

The operation of the above configuration will be described.
In the present invention, when the packaging bag P filled with the culture medium B is supplied onto the transport conveyor 2 including the transport mechanism of the bag-mouth folding device,
Upon detecting that the packaging bag P has been supplied, the driving motor 5 of the transport conveyor 2 is driven, and the driving motor is driven when the culture-base-filled packaging bag P is supplied to the position of the bag-mouth flat support mechanism 6. 5 stops. At this time, when the cylinder 9 of the bag-mouth flat support mechanism 6 is operated, the support plate 10 fixed to the piston of the cylinder 9 is moved downward via the guide rod 10A. A pair of arms 7 is inserted and guided from the opening side of the packaging bag P to the inner surface side of the bag opening P1 at the upper end opening portion of the filling packaging bag P.

Next, by operating a pair of expanding cylinders 11 supported on the support plate 10, the cylinders 11 are opened.
A pair of arms 7 attached to the opening and moving from the central portion inside the bag opening P1 on the opening side of the packaging bag P toward both sides, respectively, to expand, and extend the side portion of the bag opening P1 from the inside. With this, the bag opening P1 is made into a flat state and bag-formed and supported.

By operating the bag-mouth flat support mechanism 6, the bag mouth P1 of the packaging bag P is formed and supported in a state of standing upright, and the first folding holding mechanism 12 and the bag mouth P1 are supported. By operation with the shaping mechanism 17, the packaging bag P is shaped and held so that the base portion of the bag opening P1 does not spread. That is, by operating the flat alignment holding plate 13 via the cylinder 15 provided in the first folding holding mechanism 12, the alignment holding plate 13 moves forward and follows the outer side surface portion of the bag opening P1. , The packaging bag P is shaped and held so that the base side of the bag opening P1 of the packaging bag P does not spread.

When the bag mouth flat support mechanism 6 is operated, the bag mouth shaping mechanism 17 inserts a pair of arms 7 from the opening side of the packaging bag P and expands outward to open the bag mouth P.
When the bag 1 is made in a flat state, the cylinder 20 provided in the bag opening shaping mechanism 17 is operated to open the bag opening P1 of the packaging bag P.
Of the packaging bag P1 by pressing down along the outer side surface portion of the bag opening P1 which is formed in a flat standing state so that the base side portion of the packaging bag P does not spread.
The base side is adjusted and shaped and held, and the adjusting and holding plate 13 formed by the bag opening shaping mechanism 17 and the first folding holding mechanism 12 presses and adjusts from the upper surface side of the bag opening P1. Thereby, it is possible to press down from both outer surfaces of the bag mouth P1, and it is possible to shape the base side of the bag mouth P1 into a flat state.

Next, the cylinders 15 and 20 of the first folding guide mechanism 12 and the bag mouth shaping mechanism 17 are operated to return, and the culture medium-filled packaging bag P is moved downstream along the feed of the conveyor belt 4 of the conveyor 2. By sending the package bag P, the bag mouth P1 portion is pressed and regulated from the upper surface side of the bag mouth P1 by the regulation holding plate 13 of the first folding holding mechanism 12 with the movement of the packaging bag P. It is sent out while being guided along the upper surface side of the filled culture medium B while being folded back, whereby it is possible to fold back along the upper surface side of the culture medium B in the packaging bag P, and the bags are arranged in a beautifully aligned state. The mouth P1 can be folded in a horizontal state.

Further, since the second folding and holding mechanism 21 is provided further downstream of the first folding and holding mechanism 12, the second folding and holding mechanism 21 is provided on the second folding and holding mechanism 21.
Of the packaging bag P by the regulation holding plate 22
1 is held in a state of being folded back in the horizontal direction following the upper surface side of the culture medium B filled in the packaging bag P, and in this held state, the edge portion of the bag mouth P1 of the packaging bag P Is folded along the side surface of the packaging bag P by the operation of the edge folding plate 26 of the bag edge folding mechanism 25, whereby the bag opening P1 of the packaging bag P is folded along the outer surface of the packaging bag P. State.

Next, the bag mouth P1 folded along the outer surface of the packaging bag P is held by the second regulation holding plate 22 along the upper surface side of the packaging bag P.
In a state where the bag mouth P1 is held on the upper surface side, a pair of bag mouth ears P2 which are raised vertically from the both sides of the base side of the bag mouth P1 folded back in the horizontal direction and are turned up in the vertical direction and folded. By actuating the ear-folding operation plate 31 provided in the part-starting mechanism 28, the bag mouth-ear part P2 is raised and folded, so that the bag mouth-ear part P2 rises and is shaped vertically to form The folded state of the folded portion of the bag mouth P1 folded in the horizontal direction is brought into a state where it is attached, so that the folded state of the bag mouth P1 folded first in the horizontal direction at the bag mouth end side can be maintained. It becomes possible, and in addition, the bag bag P is turned up to the side surface to further suppress the rising of the bag opening P1.

At this time, when the ear-folding operation plate 31 is moved up and down, the bag mouth-ear portion P2 of the packaging bag P is raised and folded in a state of being inclined toward the center of the packaging bag P. In addition, a part of the frame 14A is provided in a state of being inclined at a predetermined angle, and the cylinder 29 and the plate 30 including the ear-folding operation plate 31 of the bag-mouth-ear raising mechanism 28 are arranged along the tilted predetermined angle. Since the guide rod 32 is attached and fixed in an inclined state, when the bag mouth portion P2 is raised and folded, the bag mouth edge portion P2 is pressed toward the center of the packaging bag P. Since the vertical folding habit can be provided while attaching, there is an effect that it is possible to suppress the rising of the bag mouth P1 of the packaging bag P.

Further, when a vertical folding habit is formed while pressing the bag mouth edge P2 toward the center of the packaging bag P, the horizontal alignment holding plate 22 is provided at both ends. By providing the auxiliary folding and holding mechanism 23 that supplementally regulates and holds both side end portions of the bag mouth P1 that is folded in the direction, the bag can be folded inward with the base end side of the bag mouth ear P2 as a reference. There is an effect that the folding habit can be satisfactorily worn. In this case, the auxiliary folding holding mechanism 23 includes the second regulating holding plate 22.
The auxiliary plate 24 is set to be located slightly above the setting position, and the folded form can be adjusted.

The auxiliary plate 24 is connected to the frame 1
4A, the culture medium B filled in the packaging bag P by being mounted so as to be movable in the vertical and horizontal directions.
The second folding holding mechanism 22 can be adjusted and moved in accordance with the capacity of the bag, and the bag mouth edge portion P2 is folded back in the vertical direction by the bag mouth edge rising mechanism 28. By arbitrarily moving and adjusting the folding position of the bag ear P2, the bag mouth P1 can be folded well.

Further, in a process before the folding and holding mechanism 21, at the inner side of the opening of the upper end of the packaging bag P,
Before the folding of the bag mouth P1 in the horizontal direction, the bag mouth P1 is provided with a bag mouth flat support mechanism 6 that inserts a pair of arms 7 from the opening of the packaging bag P, expands outward, and opens and supports the bag mouth P1 flat. Since the bag mouth P1 is supported by the bag mouth flat support mechanism 6 in a state in which the bag mouth P1 is straightened in a correct state in advance, it becomes easy to form a folding habit in advance, so that the bag mouth P1 is folded in a more stable state. In addition, by making the bag mouth P1 have a folding habit, the bag mouth P1 can be folded in an aligned state, and the floating is suppressed. Note that, in this case, the pair of arms 7 serving as the bag-mouth flat support mechanism 6 are set so as to be openable in a direction orthogonal to the transfer direction of the transfer mechanism conveyor 2, so that the packaging filled with the culture medium B is performed. In cooperation with the feeding operation of the bag P, the bag opening P1 of the packaging bag P can be guided back.

The vertical and horizontal movement adjusting means such as the folding / holding mechanism 21 and the auxiliary folding / holding mechanism 23 include a setting holding plate 22 of the folding / holding mechanism 21 attached to the main body frame 1 and the auxiliary holding plate 22. A slot having a long hole shape is provided on the auxiliary plate 24 of the folding and holding mechanism 23, and the regulating holding plate 22 and the auxiliary plate 24 are provided so as to be able to slide and adjust through the slit. As shown in FIG. 14 and the like, the auxiliary plate 24 of the auxiliary folding holding mechanism 23 is provided with a fixing member 34 such as a screw or a bolt in the slit 33 having a long hole shape provided on the auxiliary plate 24 via the regulating plate 22 via the auxiliary holding plate 22. 24 are held together.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention. In this embodiment, the packaging bag P
Although a round bag type has been described as an example, a similar effect can be obtained even with a rectangular packaging bag, and in the embodiment, the bag opening P1 portion of the packaging bag P is used for packaging. The first folding holding mechanism 12 and the second folding holding mechanism 12 serve as means for folding back substantially along the upper surface side of the culture medium B filled in the bag P.
Although the regular holding plates 13 and 22 are used for the folding holding mechanism 21 of this embodiment, a single folding holding mechanism may be used. In such a case, both ends of the single folding holding mechanism may be provided. Auxiliary folding and holding mechanism 23 for supplementarily regulating and holding both side end portions of the bag mouth P1 which is horizontally folded back adjacently.
And the bag mouth P1 folded horizontally
It is sufficient to provide a pair of bag mouth ear rising mechanisms 28 that vertically lifts and folds each bag mouth ear P2 protruding from both sides of the base side. Although a plate-shaped regularity holding plate is used, a plurality of rollers may be arranged to form a folding / holding mechanism for the bag mouth B. In the embodiment, each for folding the packaging bag P is used. Although the cylinder is mainly used as the driving means, a driving means using a motor may be used, and a reciprocating mechanism using a gear transmission mechanism including a crank mechanism and a rack and a pinion may be used. What is necessary is just to select suitably according to and apply.

[0054]

As described above in detail, according to the first aspect of the present invention, the transport mechanism for transporting the bag mouth of the packaging bag filled with the culture medium upward, and the transport mechanism along the transport path of the transport mechanism. A folding and holding mechanism that, when the packaging bag is conveyed to a predetermined position, folds a bag opening at an upper end opening portion of the packaging bag in a horizontal direction substantially along the upper surface side of the culture medium; An auxiliary folding and holding mechanism for supplementarily regulating and holding both end portions of the bag mouth folded in the horizontal direction at both ends of the mechanism; and the folding and holding mechanism and the bag folded in the horizontal direction by the auxiliary folding and holding mechanism. A bag mouth / folding device for a packaging bag, comprising: a bag mouth / ear launching mechanism for vertically rising and folding each bag / mouth edge protruding from both sides of the base side of the mouth, Put on the transport mechanism When the packaging bag filled with the culture medium is transported to a fixed position, the bag opening at the upper end opening of the packaging bag is substantially along the upper surface side of the culture medium in the packaging bag by the folding holding mechanism and the auxiliary folding holding mechanism. In the bag mouth which is folded back in the horizontal direction and held in the horizontal direction, bag ears protruding from both sides of the base side of the bag mouth are raised by the bag mouth raising mechanism. By being folded back, a vertical folding habit and a folding habit of the folded portion of the bag mouth folded in the horizontal direction are formed by the rising shaping of the bag mouth ear portion, whereby the bag mouth is first horizontally leveled. It is possible to maintain the folded state of the bag mouth end side folded in the direction, and it is possible to suppress the bag mouth from rising.

According to the first aspect of the present invention, in the second aspect of the present invention, the opening mechanism of the bag mouth and the ear portion is disposed so as to be inclined toward the center of the packaging bag. It is possible to maintain the vertical folding habit satisfactorily, and it is possible to suppress the rise of the bag mouth of the packaging bag.

According to the first or second aspect of the present invention, in the third aspect of the present invention, the mounting position of the folding holding mechanism is provided so as to be movable in the vertical direction, so that the packing bag is filled. Since the folding and holding mechanism can be adjusted and moved according to the capacity of the culture medium, the bag mouth can be finely folded along the upper surface side of the culture medium.

Further, in the first to third aspects,
According to the fourth aspect of the present invention, the mounting position of the auxiliary folding holding mechanism is provided so as to be movable in the vertical and horizontal directions, so that the folding holding mechanism is adjusted according to the capacity of the culture medium filled in the packaging bag. In addition to being movable, the bag / ear opening portion is vertically folded back by the bag / ear opening mechanism, and the folding position of the bag / ear portion is arbitrarily moved and adjusted according to the vertical folding tendency. Thereby, it becomes possible to satisfactorily fold the bag mouth.

Further, in the first to fourth aspects,
According to the fifth aspect of the present invention, in the post-process of the folding and holding mechanism, the edge portion of the bag mouth which is horizontally folded by the folding and holding mechanism is folded back to the side of the packaging bag filled with the culture medium. The edge portion of the bag mouth folded back in the horizontal direction is folded back to the side of the packaging bag by the bag mouth edge folding mechanism, whereby the bag is further folded. There is an effect that the lifting of the edge portion of the mouth can be suppressed.

Further, in the first to fifth aspects,
In the invention according to claim 6, in a pre-process of the folding and holding mechanism, at an inner side of a bag opening at an upper end opening portion of the packaging bag,
By inserting a pair of arms from the opening of the bag and expanding outward to provide a bag opening flat support mechanism that supports the bag opening flat, the bag opening is folded before the bag opening is folded horizontally. By supporting the bag mouth in a state where it is straightened in a flat state by the flat support mechanism, it becomes easy to form a folding habit in advance, so that the bag mouth can be folded in a more stable state, and in addition, the bag can be folded. By forming a folding habit in the mouth, it is possible to fold the bag in a state where the bag mouths are aligned, thereby suppressing the lifting, and in this case, the bag mouth flat in a direction orthogonal to the carrying direction of the carrying mechanism. By setting the pair of arms serving as the support mechanism to be expandable, the bag mouth of the packaging bag can be guided in a folded manner in conjunction with the feeding operation of the packaging bag filled with the culture medium.

[Brief description of the drawings]

FIG. 1 is a front view showing an entire configuration of a bag-mouth folding device for a culture medium-filled packaging bag applied in one embodiment of the present invention.

FIG. 2 is a plan view of the bag-mouth folding device of the culture-base-filled packaging bag of FIG. 1 as viewed from above.

FIG. 3 is a side view of a main part of the bag opening folding device for the culture medium-filled packaging bag of FIG. 1 as viewed from a right side surface.

FIG. 4 is a plan view showing an operation state of the culture-medium-filled packaging bag of FIG.

FIG. 5 is a plan view showing an operation state of the culture-medium-filled packaging bag of FIG. 2 in the bag-mouth folding device.

6 is a plan view showing an operating state of the culture-medium-filled packaging bag shown in FIG. 2 in the bag-mouth folding device.

FIG. 7 is a plan view showing an operating state of the culture-medium-filled packaging bag of FIG.

FIG. 8 is a side view of a main part showing an operation state corresponding to FIG. 5;

FIG. 9 is a perspective view of a main part showing a state of the round packaging bag corresponding to FIGS. 1 to 3;

FIG. 10 is a perspective view of a main part showing an operation state corresponding to FIGS. 5 and 8;

FIG. 11 is a perspective view of a main part showing an operation state corresponding to FIG. 6;

FIG. 12 is a front view of a main part showing an operation state corresponding to FIGS. 5, 8, and 10;

FIG. 13 is a front view of a main part showing a rising state of a bag ear portion of the packaging bag.

FIG. 14 is a side view of a main part showing an operation state corresponding to FIG. 4;

FIG. 15 is a side view of a main part showing an operation state corresponding to FIG. 13;

FIG. 16 is a side view of a main part showing an operating state of the packaging bag of FIG. 15 after the start of the opening of the bag ears is completed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body frame 2 Conveyor (conveying mechanism) 3 Roller 4 Conveying belt 5 Driving motor 6 Bag opening flat support mechanism 7 Arm 8 Cylinder mounting board 9 Cylinder 10 Support plate 10A Guide rod 11 Cylinder 12 First folding holding mechanism 13 Regulation Holding plate 14 Mounting plate 14A Frame 15 Cylinder 16 Mounting stay 17 Bag opening shaping mechanism 18 Shaping plate 19 Mounting panel 20 Cylinder 21 Second folding holding mechanism 22 Second regulating holding plate 23 Auxiliary folding holding mechanism 24 Auxiliary plate 25 Bag opening Edge turning mechanism 26 Edge turning plate 27 Folding mounting stay 28 Bag mouth opening mechanism 29 Cylinder 30 Plate 31 Ear opening operating plate 32 Guide rod B Culture medium P Packaging bag P1 Bag opening P2 Bag opening ear

Claims (6)

[Claims] 1. A transport mechanism for transporting a packaging bag filled with a culture medium with a bag opening facing upward, and provided on a transport route of the transport mechanism, and when the packaging bag is transported to a predetermined position. A folding and holding mechanism that horizontally folds the bag mouth of the upper end opening portion of the packaging bag substantially along the upper surface side of the culture medium, and both side ends of the bag mouth that is horizontally folded at both end sides of the folding and holding mechanism. An auxiliary folding and holding mechanism for supplementally regulating and holding a portion, and vertically extending the respective bag mouth ears protruding from both sides of the base side of the bag mouth horizontally folded by the folding holding mechanism and the auxiliary folding holding mechanism. A bag mouth folding device for a packaging bag, comprising: a bag mouth ear rising mechanism for rising and folding in the direction. 2. The apparatus according to claim 1, wherein said opening mechanism is inclined in a direction toward the center of the packaging bag. 3. The apparatus according to claim 1, wherein a mounting position of the folding holding mechanism is provided so as to be movable in a vertical direction. 4. The bag opening and closing device for a packaging bag according to claim 1, wherein the mounting position of the auxiliary folding and holding mechanism is provided so as to be movable in vertical and horizontal directions. 5. A step for folding an edge portion of the bag mouth folded back in the horizontal direction by the folding and holding mechanism along a side surface of a packaging bag filled with a culture medium in a subsequent step of the folding and holding mechanism. The bag mouth folding device for a packaging bag according to claim 1, further comprising a bag mouth edge folding mechanism. 6. In a pre-process of the folding and holding mechanism, a pair of arms is inserted from the opening of the bag inside the bag opening inside the bag opening at the upper end opening of the packaging bag and is expanded outward to flatten the bag opening. 6. The bag opening and closing device for a packaging bag according to claim 1, further comprising a bag opening flat support mechanism for supporting the opening in the opening.