JP2002225803A - Manufacturing system of package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide general purpose properties which are applicable to plural kinds of packaging bags even in a single manufacturing system. SOLUTION: The system comprises a holder unit 13 which opens and closes an opening 91 of the packaging bag while retaining the packaging bag 90 in a suspended state, an opening holding unit 14 which holds both sides 92 of the opening of the packaging bag in a suspended state by the holder unit 13, and which opens and closes the opening in an interlocking motion with the holder unit 13, a filling unit 3 to fill contents into the packaging bag of which the opening is open, a chuck closing unit 7 which presses the opening of the packaging bag from both sides into which the contents are filled, and a folding unit 8 which inwardly folding end faces of both sides of the packaging bag filled with the contents. Operation and non-operation of the opening holding unit 14, the chuck closing unit 7 and the folding unit 8 are switched over according to the kinds of the packaging bag.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a package manufacturing apparatus which can be applied to a plurality of types of bags.

[0002]

2. Description of the Related Art Various types of bags, such as a flat bag, a bag with a zipper, and a gusset bag, are used as a package to be filled with contents such as tea leaves. FIG. 14 shows a bag body 90 used for a package body. FIG. 14A shows a flat bag F1, which has a flat bag shape in which the periphery except for a bag mouth 91 is closed. The bag opening 91 is sealed to form a package.

FIG. 14 (b) shows a bag F2 with a chuck, in which a chuck 94 is fitted below the bag mouth 91. After the opening of the bag opening 91, the bag opening 91 can be closed by fitting the chuck 94, whereby the inside of the bag body 90 can be sealed even after the opening, so that it can be used hygienically. .

FIG. 14C shows a gusset bag F3.
Both end surfaces 93 are folded inward, and there is an advantage that more contents can be stored than they look.

[0005] In the conventional package manufacturing apparatus, the specifications are adapted to the form of the bag as described above. Therefore, it is necessary to select the package manufacturing apparatus according to the type of the bag.

[0006]

As described above, the conventional package manufacturing apparatus has a structure corresponding to the type of bag. For example, for the bag F2 with a chuck, a chuck removing member for releasing the fitting of the chuck 94 and a chuck closing member for fitting the chuck after filling the contents are required. In addition, for the gusset bag F3, both end faces 9
A mechanism for folding in 3 is required. As described above, in the related art, a single manufacturing apparatus cannot be applied to bags of various forms, which is inconvenient. Also,
A plurality of devices must be prepared according to the form of the bag to be handled, which not only requires a large installation space but also raises the cost of equipment.

[0007] The present invention has been made in consideration of such conventional problems, and has a general versatility that can be applied to a plurality of different types of bags even with a single device. Accordingly, an object of the present invention is to provide a package manufacturing apparatus which is convenient in use, can reduce an installation space, and can reduce equipment cost.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, a first aspect of the present invention is a holder device for opening and closing a bag mouth of a bag while the bag is held in a suspended state, and a hanging device using the holder device. A bag mouth gripping device that grips both sides of the bag mouth and opens and closes the bag mouth in conjunction with the holder device for the lowered bag body, and a filling device that fills the inside of the bag body with the bag mouth opened. A device, a chuck closing device that presses the bag mouth portion of the bag filled with the content from both sides, and a folding device that folds both side end surfaces of the bag filled with the content inward,
Wherein the bag mouth gripping device, the chuck closing device, and the folding device are switched between operation and non-operation depending on the type of the bag.

According to the present invention, there is provided a bag mouth gripping device which opens and closes the bag mouth in conjunction with the holder device, a chuck closing device which closes the chuck, and a folding device which folds both end surfaces of the bag, which are adapted to the type of the bag. Can be switched
It can be applied to multiple types of bags as they are. Therefore, it is versatile and convenient in use, and not only does not require a large installation space, but also equipment cost can be reduced.

According to a second aspect of the present invention, there is provided a holder device for opening and closing the bag mouth of the bag body while holding the bag body in a suspended state, and both sides of the bag mouth with respect to the bag body suspended by the holder device. A bag mouth gripping device that opens and closes the bag mouth in conjunction with the holder device, a gas nozzle that injects gas into the suspended bag body by the holder device, and holding of the holder device prior to gas injection by the gas nozzle A bag mouth holding device that closes the bag mouth by holding the bag mouth portion different from the part from both sides, a filling device that fills the inside of the bag with the bag mouth open, and a bag filled with the contents. A zipper closing device that presses the bag mouth portion from both sides, and a folding device that folds both side end surfaces of the bag body filled with the content inward, the bag mouth gripping device, the chuck closing device, and the folding device are provided. To the type of bag Operation, characterized in that the inoperative is switched.

[0011] Also in the present invention, similar to the first aspect,
Since the bag mouth gripping device, the chuck closing device and the folding device can be switched according to the type of the bag body, it can be made versatile and convenient. In addition, in this invention, in addition to the first aspect of the present invention, the bag body is inflated because a gas nozzle for injecting gas into the bag body and a bag mouth holding device for closing the bag mouth when the gas is ejected are provided. The contents can be reliably filled in the bag body. For this reason,
The contents may adhere to the inner surface of the bag, reducing the sealing performance,
Filling errors such as overflow from the bag are eliminated, and the filling efficiency is improved.

According to a third aspect of the present invention, there is provided the package manufacturing apparatus according to the first or second aspect, wherein the bag mouth gripping means is operated when the bag is formed of a flat bag and a bag with a zipper, and the zipper is closed. The apparatus operates when the bag is formed of a bag with a zipper, and the folding means operates when the bag is formed of a gusset bag.

According to the present invention, the present invention can be applied to three types of bags, that is, a flat bag, a bag with a zipper, and a gusset bag, thereby improving versatility.

According to a fourth aspect of the present invention, there is provided the package manufacturing apparatus according to any one of the first to third aspects, wherein the bag mouth gripping device operates to open and close the bag mouth of the bag. in addition,
It is characterized in that it operates so that the bag mouth of the bag filled with the contents is in a tensioned state.

In the present invention, since the bag mouth gripping device puts the bag mouth in the tension state, wrinkles at the bag mouth portion are eliminated, and the bag body can be stably held. For this reason, the sealing performance of the bag mouth and the appearance of the package are improved.

According to a fifth aspect of the present invention, there is provided the package manufacturing apparatus according to any one of the first to fourth aspects, wherein the bag mouth gripping device detachably grips both sides of the bag mouth of the bag. A pair of gripping members, an opening / closing drive member that moves the pair of gripping members in the contact / separation direction in conjunction with the holder device, and further moves the pair of gripping members in a direction away from the closed state of the bag mouth by the opening / closing drive member. And a tension applying member for moving the bag mouth to a tension state by moving the bag mouth to a tension state.

In the present invention, since the bag mouth gripping member is provided with the opening / closing drive member and the tension applying member, the bag mouth can be opened and closed smoothly and the bag mouth can be brought into a tensioned state without wrinkles. And the appearance of the manufactured package is improved.

According to a sixth aspect of the present invention, there is provided the package manufacturing apparatus according to any one of the first to third aspects, wherein the chuck closing device includes a bag opening portion of the bag filled with the contents from both sides. A pair of chuck closing rollers that rolls in a pressed state are provided, and the pair of chuck closing rollers rolls as the bag is transported.

As described above, the chuck closing roller rolls along with the transport of the bag, so that the chuck can be fitted simultaneously with the transport of the bag. Therefore, even a bag with a chuck can be manufactured quickly.

According to a seventh aspect of the present invention, there is provided the package manufacturing apparatus according to any one of the first to third aspects, wherein the folding device includes a pair of folding pieces opposed to both side end surfaces of the bag body. Is characterized in that the folded pieces are simultaneously folded into both end faces of the bag body.

As described above, the pair of folded pieces are simultaneously folded into the both side end faces of the bag body, whereby both side end faces can be folded inward of the bag body. Thus, a gusset bag having a good appearance can be manufactured, and even a gusset bag can be manufactured reliably and quickly.

[0022]

1 and 2 are an overall side view and a front view, respectively, of an embodiment of the present invention. This embodiment includes an outer base 1 and an inner base 2,
The filling device 3 is supported on the outer base 1, and the bag supplying device 4, the holder unit 5, the bag mouth holding device 6, the chuck closing device 7, the folding device 8, the bag catcher device 9, the sealing device are supported on the inner base 2. 10 are arranged. The holder unit 5 includes a holder device 13 and a bag mouth gripping device 1.
4, and a gas nozzle 11 is provided. On the other hand, on the front side of the inner base 2, a bag pool device 12 is arranged.

The bag 90 is in a state in which the peripheral portion other than the bag opening 91 is closed. The bags 90 are taken out one by one from the bag pool device 12 by the bag supply device 4 and suspended in the holder unit 5. The contents are filled by the filling device 3 while being held. After the filling, the bag is transported from the filling position by the bag catcher device 9, and the bag opening 91 is sealed by the sealing device 10 to be carried out.
As the contents to be filled, green tea, black tea, tea leaves such as oolong tea, coffee powder, powdered substances such as powder seasonings such as shavings and chemical seasonings are selected, and granules such as rice, wheat, beans and the like are selected. It may be in a liquid form such as a form, a juice, a seasoning, or the like.

The filling device 3 includes a drive box 21 and a hopper 22 both mounted on the outer base 1. The hopper 22 is filled with the above-mentioned contents, and a filling nozzle 23 for putting the filled contents into the bag body 90 is hung down. In this embodiment, the filling nozzle 23 is fixed to the outer base 1 by being integrated with the hopper 22, and its tip (lower end) extends toward the holder unit 5.

The drive box 21 is provided with a filling motor 24. The rotational force of the filling motor 24 is applied to a belt (not shown) wrapped inside the drive box 21.
Through the auger screw 25 (see FIG. 1). The auger screw 25 is inserted from the inside of the hopper 21 to the inside of the filling nozzle 23, and the contents inside the hopper 21 are introduced into the filling nozzle 23 by the rotation thereof,
It is charged into the bag body 90 from the tip of the filling nozzle 23 and filled. By using the auger screw 25 as described above, the filling amount of the content per unit time can be accurately measured based on the rotation speed of the auger screw 25, that is, the rotation speed of the filling motor.

As the filling motor 24, a motor that can precisely control the rotation speed of the auger screw 25 is preferable. Therefore, in this embodiment, a pulse motor is used. Filling motor 2 consisting of a pulse motor
4 is controlled by a control unit 15 as filling control means, so that the contents of the bag body 90 can be filled with high precision as described later.
Note that the filling motor 24 may be a motor other than the pulse motor as long as it can control the number of rotations.

The bag pool device 12 sequentially supplies the bags 90 to the bag supply device 4 and is arranged at a position close to the bag supply device 4. As shown in FIG. 3, the bag pool apparatus 12 includes an endless conveyor 27 that runs intermittently by a motor (not shown).
On the conveyor 27, partition plates 28 are attached at appropriate intervals, and a bag body 90 is placed between adjacent partition plates 28 in a state of being divided into a plurality of stacked blocks. . And conveyor 2
The bags 90 are taken out one by one from the block on the upstream side in the running direction of No. 7. When the bag 90 disappears from the upstream block, the conveyor 27 travels a predetermined stroke in order to move the next block to the bag supply device 4 side.

In order to transfer the bag 90 from the bag pool device 12 to the bag supply device 4, a transfer rod 29 is arranged between them. The transfer rod 29 takes out the bags 90 one by one from the block on the upstream side of the bag pool device 12 by suction. The transfer rod 29 is connected to a transfer cylinder 30
, And moves forward and backward in a direction perpendicular to the direction of conveyance by the bag pool device 12 by driving of the transfer cylinder 30. A pedestal 31 (see FIG. 2) that can move up and down is disposed adjacent to the bag pool device 12.
The transfer rod 29 transfers the sucked bag body 90 to the receiving table 31. The bag body 90 transferred to the receiving table 31 is supplied to the holder unit 5 by the bag body supply device 4.

The bag supply device 4 includes a cam plate 33 attached to the inner base 2 with the cam groove 33a formed.
, A pickup arm 34 rotatably attached to the cam plate 33, and a supply arm 35 running along the cam groove 33a.

The pickup arm 34 takes out the bag 90 on the receiving table 31 by suction, and supplies the bag 90 to the supply arm 35. The supply arm 35 is connected to the bag opening 9 of the bag body 90.
The bag body 90 is received so as to suck the bag 1 from both sides, and includes a pair of suction heads 35a for sucking the bag opening 91 from both sides. When the supply arm 35 travels along the cam groove 33a in the suction state of the suction head 35a, the suction head 35a moves in the separating direction. This movement in the separating direction causes the bag body 90 to move into the bag mouth 9.
1 is opened. The supply arm 35 rotates from a solid line state in FIG. 3 to a substantially horizontal position shown by a chain line state, and supplies the bag body 90 with the bag opening 91 opened to the holder unit 5 by this rotation.

FIGS. 4 to 6 show the holder unit 5, which includes a lifting block 37 which moves up and down within a predetermined range by driving a contact / separation driving device 16 which will be described later, and a lifting block 3
7, a holder frame 13 and a bag mouth gripping device 14 are mounted on the unit frame 38.

The holder device 13 has a pair of holders 39 for respectively holding the bag openings 91 of the bag body 90. By holding the bag mouth 91 between the pair of holders 39,
The bag 90 is held by the holder device 13 in a suspended state.

As shown in FIG. 4, the pair of holders 39
It has a holding plate 39a and a holding claw 39b, respectively, and holds the facing bag mouth 91 of the bag body 90 between the holding plate 39a and the holding claw 39b. Each holder 39
Is biased by a spring (not shown) in the direction of pressing against the holding plate 39a, so that the bag opening 91 is held by the holding plate 39a and the holding claw 39b.
Is maintained. In order to release the holding of the bag mouth 91, a holding release cylinder 41 is arranged at a position facing each holding claw 39b.

The holders 39 are attached to the rods of the opening cylinder 40 mounted on the unit frame 38 so as to face each other, and are moved in the directions of contact and separation by driving the opening cylinder 40. The movement of the holder 39 in the separating direction causes the bag opening 9 of the bag body 90 to move.
1 is opened, and the bag opening 91 is closed by the movement of the holder 39 in the approaching direction. As described above, in this embodiment, the bag opening 91 of the bag body 90 is forcibly opened by the movement of the holder 39 in the separating direction.

As shown in FIGS. 5 and 6, both sides 92 (FIG. 14) of the bag mouth 91 of the bag body 90 are provided.
(See FIGS. 15A and 15B and FIG. 15). Each gripping member 43 is attached to a gripping cylinder 44, and the gripping cylinder 44
, The sides 92 of the bag opening 91 are gripped and released. The bag mouth gripping device 14 is driven when the flat bag F1 and the zippered bag F2 are shown in FIGS. 14A and 14B, and is not driven when the gusset bag F3 is shown in FIG. 14C. The operation is switched in the following manner.

As shown in FIG. 5, each of the gripping cylinders 44 is connected to an opening / closing drive member 45 and a tension applying member 46 attached to the lower side of the unit frame 38. That is, on the lower surface of the unit frame 38,
The frame brackets 47 hang down so as to face each other, and an opening / closing drive member 45 and a tension applying member 46 are attached to each frame bracket 47. Then, the first connecting arm 48 is attached to the rod of the opening / closing drive member 45.
On the other hand, the second connecting arm 49 is attached to the rod of the tension applying member 46, and the gripping cylinder 44 is connected to the respective connecting arms 48, 49, so that the opening / closing drive member 45 and the tension applying Member 46
It is a structure to be connected to.

Both the opening / closing drive member 45 and the tension applying member 46 use cylinders that expand and contract in the direction of the bag 90, and the gripping cylinder 44, that is, the gripping member 43 is moved by driving these cylinders. Move forward and backward in the direction. In this case, the rod of the opening / closing drive member 45 slidably penetrates the second connection arm 49 on the tension applying member 46 side, whereby the first connection arm 48 and the second connection arm 49 are respectively connected. Are movable by the cylinders 45 and 46 of FIG.
The (grip member 43) is configured to move forward and backward by driving the opening / closing drive member 45 and the tension applying member 46, respectively.

The opening / closing drive member 45 moves the pair of gripping members 43 in the direction of approaching / separating by driving. Thus, the opening / closing drive member 45 operates to open / close the bag opening 91 of the bag body 90 held by the pair of holding members 43. The opening / closing operation of the bag opening 91 is performed in conjunction with the driving of the holder device 13 described above.

On the other hand, the tension applying member 46 is
5, the bag body whose bag mouth 91 is closed is further pulled. For this reason, the tension applying member 46
Is a direction in which the gripping member 43 gripping the bag mouth 91 in the closed state is further separated.

As shown in FIG. 4, the contact / separation driving device 16 for vertically moving the holder unit 5 includes a column 51 fixed to the inner base 2 along the vertical direction,
1, a pair of pulleys 52 attached to the upper end portion, a chain 53 that engages with the pulley 52 and travels in the vertical direction, and an elevator 5 connected to both ends of the chain 53.
4 and a balance weight 55. A guide rail 56 is attached to the column 51 along the up and down direction, and the elevator 54 moves up and down along the guide rail 56.

The elevator 54 is connected to a lifting / lowering motor 57, and moves up and down by the forward / reverse rotation of the lifting / lowering motor 57. The elevating block 37 of the holder unit 5 is attached to the elevator 54, whereby the holder unit 5 moves up and down by driving the elevating motor 57. When the holder unit 5 is lowered, the contents are filled into the bag body 90 while being measured. Since the contents are measured together with the lowering of the holder unit 5, a pulse motor whose rotation speed can be controlled and other motors are used as the elevating motor 57.

The weighing of the contents is based on the weight of the entire holder unit 5 which is increased by filling the contents into the bag 90 with reference to the weight of the entire holder unit 5 when the bag 90 is empty. The holder unit 5 is provided with a weighing means 17 for that purpose.

The weighing means 17 is provided at a connecting portion between the lifting block 37 and the unit frame 38 in the holder unit 5 and connects them. The unit means 38 and the holder device 13 attached to the unit frame 38 And bag mouth holding device 14 and holder device 1
The weight of the contents filled in the bag 90 together with the bag 90 suspended from the bag 3 is measured.
As the weighing means 17, a load cell that detects weight from its own distortion can be used. The control unit 15 serving as the above-described filling control unit includes the weighing unit 1.
7, and controls the driving of the lifting / lowering motor 57 based on the input measurement signal. For this reason, the control unit 15 also functions as control means for the elevating motor 57.

As shown in FIGS. 4 to 6, the holder unit 5 is provided with a gas nozzle 11. The gas nozzle 11 is vertically movable and is connected to a gas tank and a pump (both not shown) via a valve (not shown). Thereby, the gas nozzle 11
Enters the bag 90 before filling the contents and injects an inert gas such as nitrogen or a gas such as air to inflate the bag 90 to facilitate filling of the contents into the bag 90. . As shown in FIG. 6, the gas nozzle 11 is attached to the elevating block 37 of the holder unit 5 to be independent of the above-mentioned weighing means 17, and therefore the weighing means 17 measures the weight of the gas nozzle 11. Not to be.

The bag mouth holding device 6 acts so as to hold the bag mouth 91 of the bag body 90 from both sides and close the bag mouth 91 prior to the gas injection by the gas nozzle 11. As shown in FIG. 1, the bag mouth holding device 6
And a pair of rotating arms 59 that rotate above the arm.
Further, a rotation cylinder 60 for rotating the rotation arm 59 is provided.
Are supported by the inner base 2 as shown in FIG.

FIG. 7 shows the bag mouth holding device 6, in which the upper end of each of the rotating arms 59 has a rotating gear 61 meshed with each other.
It is connected to. The rotation gear 61 is attached to the inner base 2 so as to be located above the holder unit 5. The rotation cylinder 60 is provided at a position close to the rotation gear 61, and its rod is connected to one of the rotation gears 61. Therefore, when the rotation cylinder 60 expands and contracts, the rotation arm 59 rotates between the solid line and the chain line.

As shown in FIG. 2, a holding bar 62 extending along a bag opening 91 of the bag body 90 is attached to each of the rotating arms 59. The holding bar 62 acts to hold a portion of the bag body 90 held by the holder device 5 that is different from the bag mouth portion from both sides. That is, the bag mouth portion is closed by pressing the bag mouth portion slightly lower than the bag mouth portion held by the holder 39 of the holder device 5, thereby holding the holder 39 in the bag body 90. Gas is prevented from leaking from a portion below the portion, and the gas injected by the gas nozzle 11 can inflate the bag 90 reliably.

The bag catcher device 9 receives the bag 90 filled with the contents from the holder device 13 and conveys it to the carry-out side. As shown in FIGS. 8 and 9, the bag catcher device 9 includes a pair of catcher bars 64 sandwiching the bag opening 91 of the bag body 90 from both sides, a catcher cylinder 65 for moving the catcher bar 64 in the direction of contact and separation. It has. Each catcher cylinder 65 is attached to a catcher arm 66, and the catcher arm 66 is connected to a slider 67.

As shown in FIG. 2, the slider 67 moves in a reciprocating direction along a guide rod 68 laid horizontally on the inner base 2. As shown in FIG. 8, the movement of the slider 67 is performed by a slide cylinder 70 attached to the inner base 2, and the slider 67 is connected to the slide cylinder 70 via a connection link 71. Further, as shown in FIG.
Is mounted with a lifting cylinder 69 which is oriented vertically. A catcher arm 66 is supported by the lifting cylinder 69. Thus, the pair of catcher bars 64 can move up and down.

A folding device 8 is provided in connection with the bag catcher device 9 described above. As shown in FIGS. 10 and 11, the folding device 8 includes a moving-side folding member 73.
And a fixed-side folding member 74. The moving-side folding member 73 is attached to a bracket plate 75 provided on the catcher arm 66 of the bag catcher device 9, whereby the moving-side folding member 73 is integrally formed with the catcher bar 64 attached to the catcher arm 66. Move. On the other hand, the fixed side folding member 74 is attached to the inner base 2 at a position facing the moving side folding member 73.

The folding members 73 and 74 are plate-shaped folding pieces 76 and 77 oriented vertically, and folding cylinders 78 and 78 for moving the folding pieces 76 and 77 forward and backward.
79. The folded pieces 76 and 77 are a bag 90
And enters the end faces 93 (see FIG. 14 (c)) on both sides of the end face 93 to fold the end faces 93. The folded pieces 76 and 77
Is performed simultaneously on the moving side and the fixed side before the bag body 90 is clamped by the bag body catcher device 9. The folding device 8 is driven when the bag body 90 is the gusset bag F3 shown in FIG. 14C, and is not driven when the bag body 90 is the flat bag F1 and the zippered bag F2 shown in FIGS. 14A and 14B. The operation is switched in the following manner.

As shown in FIG. 2, a chuck closing device 7 is disposed in the transport path of the bag catcher device 9, and a seal device 10 is disposed at the end of the transport path.

As shown in FIG. 12, the chuck closing device 7 includes a bracket 81 fixed to the inner base 2 and a pair of chuck closing rollers 82 attached to the bracket 81 so as to face each other. The chuck closing roller 82 is attached to the bracket 81 so as to be located in the transport path of the bag catcher device 9, and is pressed from both sides into the bag mouth 91 of the bag 90 transported by the bag catcher device 9. To roll.

By the rolling in the pressed state, the bag 90
Can be closed (see FIG. 14B). Therefore, the chuck closing device 7 effectively operates when the bag with the chuck F2 shown in FIG. 14B is used, and the flat bag F1 shown in FIGS. 14A and 14C.
In the case of the gusset bag F3, the passage of the bag body 90 is simply permitted. In order to perform the closing operation in accordance with the chuck 94, one of the chuck closing rollers 8 is used.
Reference numeral 2 indicates that an adjustment dial 83 can be used to adjust the interval with the other chuck closing roller 82.

As shown in FIG. 13, the sealing device 10 has a pair of seal bars 85, and heat seals the bag opening 91 of the bag body 90 inserted into the seal bar 85. To perform the heat sealing, one seal bar 85 is connected to a sealing cylinder 86. Note that the sealing device 10 may be configured to perform ultrasonic sealing. In this case, the ultrasonic horn and the receiving table
This is possible by arranging them so as to travel along the bag mouth 91 of the vehicle.

Next, the operation of this embodiment will be described.
Before the bag body 90 is supplied, the holder unit 5
Is stopped at the lowest position shown by the solid line in FIGS. 2, 4 and 5. The supply arm 35 of the bag supply device 4 supplies one bag 90 taken out of the bag pool device 12 to the holder device 13 of the holder unit 5 at the lowest position. In the case where the bag body 90 is a bag F2 with a chuck, the bag is supplied with the chuck 94 fitted.

The bag 90 is attached to the suction head 3 of the supply arm 35.
The bag mouth 91 is opened by the separation of 5a, and is held by the holder device 13 in this opened state. In the case of the bag F2 with a chuck, the chuck 94 is closed, but the upper side of the bag mouth 91 with respect to the chuck 94 is opened and supplied by the suction head 35a. Hereinafter, a bag opening step, a bag inflation step, a content filling / measuring step, and a bag mouth sealing step are sequentially performed.

(1) Bag Opening Step In the holder device 13, the holding release cylinder 41 is
9b is opened, and after the facing bag mouth 91 of the bag body 90 supplied by the supply arm 35 is inserted between the holding claw 39b and the holding plate 39a, the holding claw 39b is pressed against the holding plate 39a. Thereby, the bag body 90 is held in a suspended state.

Here, when the bag body 90 is a flat bag F1 and a bag F2 with a chuck, the bag mouth gripping device 14 operates as follows.

At the same time that the holder 39 of the holder device 13 grips the bag opening 91 of the bag body 90, the gripping members 43 of the bag body gripping device 14 grip both side edges 92 of the bag body 90. Of the opening and closing drive member 45
Rod exits. Thereafter, the opening cylinder 40 moves the holder 39 in the separating direction. The bag mouth 91 is forcibly opened by the separation movement of the holder 39, and even in the case of the bag F2 with a chuck, the fitted chuck 94 is forcibly released from the fitting and the bag mouth 91 is opened. . Simultaneously with the movement of the holder 39, the rod of the opening / closing drive member 45 advances to move the gripping member 43 in the approaching direction. FIG. 15 shows this state. When the holder 39 and the gripping member 43 move in the separating direction, the bag mouth 91 is opened in a substantially rhombic shape, and can be sufficiently opened.

On the other hand, when the bag body 90 is the gusset bag F3, the bag mouth holding device 14 does not operate, and the holder 39 moves in the separating direction, and the bag mouth 91 of the gusset bag F3 is opened by this movement. Is done. This is because both ends 93 are folded in the gusset bag F3, and when the bag mouth gripping device 14 grips both sides 92, the opening operation of the both ends 93 cannot be performed. In the gusset bag F3, both side end surfaces 93 that are folded in automatically follow the movement of the holder 39 in the separating direction, so that the bag opening 91 is closed.
Can be sufficiently opened.

(2) Inflation Step of Bag 90 With the opening of the bag opening 91 as described above, the gas nozzle 11 descends and enters the bag 90 from the bag opening 91. When the bag body 90 is a flat bag F1 and a bag F2 with a chuck after the gas nozzle 11 enters, the rod of the opening / closing drive ratio 45 retreats and the holding member 43 moves away, and at the same time, the opening cylinder 4
By 0, the holder 39 moves closer. Thereby, the bag mouth 91 is closed. On the other hand, the bag body 90 is a gusset bag F3.
In this case, the holder 39 moves closer and the bag opening 91 is closed.

Thereafter, the bag mouth holding device 6 operates. In the bag mouth holding device 6, the rotation cylinder 60 is driven to rotate the holding bar 62 in the direction of the bag 90 (the direction from the dashed line position to the solid line position in FIG. 7). Press the mouth 91 from both sides. The holding bar 62 slightly closes the bag mouth portion lower than the bag mouth 91 held by the holder 39 to close the bag mouth 91. In this state, gas is injected from the gas nozzle 11 into the bag 90, and the bag 90 expands. Thereby, the close contact of both sides of the bag due to static electricity and the viscosity of the packaging material is released, and the inflated state is maintained, so that the contents adhere to the inner surface of the bag 90 and the sealing property of the bag opening 91 is reduced. And the contents do not overflow from the bag. As a result, a manufacturing error is lost, and the yield can be improved. This bag 9
After the zero inflation, the holding bar 62 rotates in the opposite direction and separates from the bag body 90.

Thereafter, when the bag body 90 is a flat bag F1 and a bag F2 with a chuck, the opening cylinder 40 is driven to move the holder 3
9 moves in the separating direction, and the gripping member 43 moves in the approaching direction by the opening / closing drive member 45. On the other hand, the bag 9
When 0 is the gusset bag F3, only the holder 39 moves in the separating direction. By these operations, the bag mouth 9 of the bag body 90 is opened.
The opening state of No. 1 is maintained, and filling and weighing of the contents are performed in this state.

(3) Content Filling / Measurement Step In filling and weighing the content, first, the elevator 54 is raised by the drive of the lifting / lowering motor 57 of the contact / separation drive device 16, whereby the holder unit 5 is moved to the position shown in FIG. From the solid line position to the chain line position. At this time, the control unit 15 detects the elevating position based on the number of rotations (number of pulses) of the elevating motor 57.

As shown in FIG. 6, the filling nozzle 23 of the filling device 3 enters the bag 90 due to this rise. At this time, the weighing means 17 determines the total weight of the unit frame 38 in the holder unit 5, the holder device 13 and the bag mouth holding device 14 attached to the unit frame 38, and the empty bag body 90 as a reference value. That is, it is set to “0”.

After this setting, the lifting / lowering motor 57 is driven by the control of the control unit 15, and the entire holder unit 5 is lowered via the elevator 54. In conjunction with the lowering of the holder unit 5, the filling motor 24 of the filling device 3 is driven by the control of the controller 15 to
Is rotated to fill the contents in the hopper 22 with the filling nozzle 23.
From the lower end 23a of the bag. At the time of charging the contents, as shown in FIG.
3a is performed so as to maintain a non-contact state with the contents to be charged and filled in the bag body 90. For this reason, the control unit 15 adjusts the filling speed of the contents and the descending speed of the holder unit 5.

When the holder unit 5 is lowered, the control unit 15 measures the number of rotations (the number of pulses) of the lifting / lowering motor 57 to grasp the lowered position. Then, during the lowering of the holder unit 5 near the lowermost position, the control unit 15 stops the elevating motor 57 to stop the lowering of the holder unit 5. By this stop, the weighing unit 17 moves the unit frame 38 of the holder unit 5 at the stop position and the holder device 1 attached to the unit frame 38.
3 and the bag mouth gripping device 14 and the bag body 90 in a state where the contents are filled.
Is measured and output to the control unit 15.

Thus, the control unit 15 calculates the shortage amount up to the fixed filling, drives the filling motor 24 and keeps the auger screw 2 while the holder unit 5 is stopped.
5 is rotated to fill the bag 90 with the insufficient content. The weighing means 17 measures the weight of the content to be filled,
As described above, the unit frame 38, the holder device 13,
It measures from the total weight of the bag mouth gripping device 14 and the bag body 90 in the state where the contents are filled, and outputs a signal to the control 15 when the fixed amount is filled. Thereby, the contents can be filled with the correct weight.

After the filling of the contents, the control unit 15 drives the elevating motor 57 to lower the holder unit 5 to the lowest position. At this lowermost position, the filling nozzle 23 comes out of the bag 90 and the filling of the contents is completed.

In this embodiment, the measuring means 17
Measures the constant filling of the contents, but if the drop amount of the contents according to the rotation speed of the auger screw 25 can be accurately grasped, the control unit 15 controls the filling motor 24 for rotating the auger screw 25. The number of rotations may be controlled to perform the filling up to the fixed amount. In this case, by using a motor such as a servomotor that can accurately control the number of rotations as the filling motor 24, the contents can be accurately filled as described above.

(4) Sealing Step of the Bag Mouth After the fixed amount of the contents is filled, the bag catcher device 9 is operated. That is, the slide cylinder 70 (see FIG. 8) is driven, and the pair of catcher bars 64 moves in the direction of the bag body 90 from the solid line position to the chain line position in FIGS. At this time, the movable side folding member 73 also moves integrally.

The bag body 90 is composed of a flat bag F1 and a bag F with a chuck.
In the case of 2, the folding device 8 does not operate, but in the case of the gusset bag F3, the folding device 8 operates before the bag catcher device 9 operates.

That is, when the bag body 90 is the gusset bag F3, as shown in FIG. 10, the folding cylinder 78 and the inner base 2 of the movable folding member 73 moved to the bag body 90 together with the catcher bar 64. The folding cylinder 79 of the fixed-side folding member 74 being fixed is driven at the same time, and the respective folding pieces 76 and 77 are put into the bag 90.
At the same time in the directions of both end surfaces 93. Then, the folded pieces 76 and 77 that have advanced are both side end surfaces 93 of the bag body 90.
Acts to be folded inward. Thereby, even if both end surfaces 93 are opened by filling with the contents, the gusset-shaped shape can be regained because it is reliably folded. Therefore, the gusset bag F3 with improved appearance can be quickly and reliably formed.

Next, in the bag catcher device 9, the catcher bar 64 moves closer to the bag opening 91 of the bag 90.
After this, the holding of the bag body 90 by the holder 39 is released by the holding release cylinder 41 of the holder device 13, and the bag body 90 is delivered to and held by the catcher bar 64.

The catcher bar 64 holds the bag 90
Is transported in the direction opposite to the above. A chuck closing device 7 is disposed in the middle of this conveyance, and the chuck closing roller 82 rolls while pressing both sides of the bag opening 91 of the bag body 90. Thus, when the bag body 90 is the bag F2 with a chuck, the chuck 94 is fitted and the bag opening 91 is closed by the rolling of the chuck closing roller 82. When the bag 90 is a flat bag F1 and a gusset bag F3, the bag 9
0 only passes between the chuck closing rollers 82.

When the catcher bar 64 reaches the transport end, the sealing device 10 descends, and the bag opening 91 of the bag body 90 is inserted between the seal bars 85. Then, the seal bars 85 approach each other to seal the bag mouth 91. In the case where the bag body 90 is the bag F2 with a chuck, the upper part of the bag mouth 91 is sealed more than the chuck 94.

After this sealing, the catcher bar 64 separates to release the bag 90 from the holding state. As a result, the bag body 90 falls to a shooter (not shown) and is carried out of the machine.

In this embodiment, the bag mouth gripping device 14 that operates when the bag body 90 is the flat bag F1 and the bag F2 with the chuck, the chuck closing device 7 that operates when the bag 90 is the bag F2 with the chuck, Since it has the folding device 8 that operates in the case of the gusset bag F3, it can be directly applied to a plurality of types of bags. Therefore, it is versatile and convenient in use, and not only does not require a large installation space, but also equipment cost can be reduced.

The opening / closing drive member 4 is
5 is provided with the tension applying member 46 for further pulling the bag body 90 with respect to the closed state of the bag body 90, so that the bag mouth 91 can be in a tensioned state without wrinkles. Therefore,
Improve the appearance of the package to be manufactured

Further, since the chuck closing device 7 closes the chuck 94 simultaneously with the transfer of the bag body 90, the chuck 94
Can be automatically performed, and the bag body F with a chuck can be
Even if it is 2, it can be manufactured quickly.

The present invention is not limited to the above embodiments, but can be variously modified. For example, the folding piece 7
The folding device 8 composed of the folding cylinders 78 and 79 and the folding cylinders 78 and 79 may be arranged below the bag holding device 14 so that the side end surfaces 93 of the bag 90 are folded after the contents are filled.

[0083]

According to the first aspect of the present invention, the bag mouth gripping device, the chuck closing device, and the folding device are switched according to the type of the bag, so that the present invention can be directly applied to a plurality of types of bags. It is convenient and easy to use, not only does not require a large installation space, but also can reduce equipment costs.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, since the gas nozzle and the bag mouth holding device are provided, the bag body can be reliably inflated, whereby the contents can be reduced. Filling errors, such as deterioration of the sealing property due to adhesion to the inner surface of the bag and overflow from the bag, are eliminated, and filling efficiency is improved.

According to the third aspect of the present invention, the present invention can be applied to three types of bags, that is, a flat bag, a bag with a zipper, and a gusset bag, thereby improving versatility.

According to the fourth aspect of the present invention, wrinkles in the bag mouth are eliminated and the bag can be stably held, so that the sealing property of the bag mouth and the appearance of the package are improved.

According to the fifth aspect of the present invention, the opening and closing of the bag mouth can be smoothly performed, and the bag mouth can be brought into a tensioned state without wrinkles, thereby improving the appearance of the package.

According to the sixth aspect of the present invention, the chuck closing roller rolls with the conveyance of the bag and the chuck is fitted, so that even a bag with a chuck can be manufactured quickly. .

According to the seventh aspect of the present invention, since the pair of folding pieces are folded into the both end surfaces of the bag body, a gusset bag having a good appearance can be manufactured. Can be manufactured.

[Brief description of the drawings]

FIG. 1 is a side view showing an entire embodiment of the present invention.

FIG. 2 is a front view showing an entire embodiment of the present invention.

FIG. 3 is a side view showing a bag supply device and a bag pool device.

FIG. 4 is a side view showing a holder unit.

FIG. 5 is a front view showing a holder unit.

FIG. 6 is a plan view showing a holder unit.

FIG. 7 is a front view showing the bag mouth holding device.

FIG. 8 is a plan view showing a bag catcher device and a folding device.

FIG. 9 is a front view showing the bag catcher device.

FIG. 10 is a plan view showing the operation of the bag catcher device and the folding device.

FIG. 11 is a front view showing the operation of the bag catcher device and the folding device.

FIG. 12 is a front view showing a chuck closing device.

FIG. 13 is a plan view showing a sealing device.

14A is a perspective view of a flat bag, FIG. 14B is a perspective view of a bag with a chuck, and FIG. 14C is a perspective view of a gusset bag.

FIG. 15 is a perspective view showing an open state of the bag.

[Explanation of symbols]

 Reference Signs List 3 Filling device 5 Holder unit 6 Bag mouth holding device 7 Chuck closing device 11 Gas nozzle 13 Holder device 14 Bag mouth holding device 15 Control unit 16 Contact / separation drive device 17 Metering means 23 Filling nozzle 43 Holding member 45 Opening / closing drive member 46 Tension applying member 73 Moving-side folding member 74 Fixed-side folding member 82 Chuck closing roller 90 Bag body 91 Bag mouth 92 Both sides 93 Both side end faces 94 Chuck F1 Flat bag F2 Chuck bag F3 Gazette bag

Continued on the front page F term (reference) 3E030 AA04 AA05 BA02 BB02 BC02 CA04 CA07 CB01 EA01 EB01 GA01 3E049 AA06 AA07 BA01 BA03 CA01 CA02 DA07 DB01 3E094 AA12 BA01 BA06 CA37 DA06 EA01 FA03 FA05 FA19 HA08 HA10 HA11

Claims (7)

[Claims] 1. A holder device for opening and closing a bag mouth of a bag body while holding the bag body in a suspended state, and a holder holding both sides of the bag mouth for a bag body suspended by the holder device. A bag mouth gripping device that opens and closes the bag mouth in conjunction with the device, a filling device that fills the inside of the bag with the bag mouth open, and a bag mouth portion of the bag filled with the contents from both sides A chuck closing device for pressing, and a folding device for folding inward both side surfaces of the bag filled with the contents, wherein the bag mouth gripping device, the chuck closing device, and the folding device are operated according to the type of the bag. And a non-operating state is switched. 2. A holder device for opening and closing the bag mouth of the bag body while holding the bag body in a suspended state, and a holder holding both sides of the bag mouth for the suspended bag body by the holder device. A bag mouth gripping device that opens and closes the bag mouth in conjunction with the device, a gas nozzle that injects gas into the suspended bag body by the holder device, and a bag that is different from the holding portion of the holder device prior to gas injection by the gas nozzle A bag mouth holding device that closes the bag mouth by holding the mouth portion from both sides, a filling device that fills the inside of the bag with the bag mouth open, and a bag mouth portion of the bag filled with the contents on both sides And a folding device that folds both side end faces of the bag body filled with the contents inward, wherein the bag mouth gripping device, the chuck closing device and the folding device depend on the type of the bag body. Actuation, Package manufacturing apparatus characterized by operation is switched. 3. The bag mouth gripping means operates when the bag comprises a flat bag and a bag with a chuck, the chuck closing device operates when the bag comprises a bag with a chuck, and the folding means comprises a gusset. The package manufacturing apparatus according to claim 1, wherein the apparatus operates when the bag is a bag. 4. The bag mouth gripping device operates to open and close the bag mouth of the bag, and also operates to pull the bag mouth of the bag filled with the contents. The package manufacturing apparatus according to claim 1, wherein: 5. A bag opening gripping device, wherein a pair of gripping members for detachably gripping both sides of a bag opening of a bag body and a pair of gripping members are moved in a direction of contact and separation in conjunction with the holder device. An opening / closing drive member, and a tension applying member that further moves the pair of gripping members in the separating direction to bring the bag mouth into a tension state with respect to a closed state of the bag mouth by the opening / closing drive member, is provided. A package manufacturing apparatus according to any one of claims 1 to 4. 6. The chuck closing device includes a pair of chuck closing rollers that roll while pressing the bag mouth portion of the bag filled with the contents from both sides, and a pair of chuck closing rollers along with the transport of the bag. The package manufacturing apparatus according to any one of claims 1 to 3, wherein the chuck closing roller rolls. 7. The folding device according to claim 1, wherein the folding device includes a pair of folding pieces opposed to both side end faces of the bag body, and the pair of folding pieces simultaneously fold into both side end faces of the bag body. The package manufacturing apparatus according to any one of claims 1 to 3.