JPH09278005A - Filling apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the remaining amount of air from a bag at the time of filling the bag with liquid. SOLUTION: The apparatus is equipped with a first pressing means 69 having a first pressing body 68 that presses from below a bag body 1 for which positioning is made to a port 2 by a positioning means 16, a second pressing means 101 having a second pressing body 100 capable of pressing from below a part of the bag body 1 put under the state as mentioned above, and a third pressing means 104 having a third pressing body 103 that is agreed in position in the horizontal direction with the second pressing body 100 and capable of holding a part of the bag body 1 put under the state as mentioned above between the third pressing body and the second pressing body 100. Thereby, the bag body 1 can be pressed from below and brought close to the port 2 with the first pressing body 68 and air inside the bag body 1 is decreased with a part of the bag body 1 held between the second pressing body 100 and the third pressing body 103 before filling of liquid by a filling means 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling device for filling a resin bag with a liquid.

[0002]

2. Description of the Related Art Conventionally, it has been customary that a liquid is filled in a basically invariant container having a space for filling and is handled for transportation. However, since the shape or size of the container does not change even when the container is empty, there is a problem that the transport efficiency at the time of collection or the storage efficiency until collection is very poor. From this point of view, recently, a method has been adopted in which a liquid-filled resin bag body having a relatively strong strength is filled with a liquid, which is placed in a cardboard box for handling such as transportation. That is, in this method, the empty bag can be made much smaller than the liquid-filled bag, and the corrugated cardboard can be easily folded. The storage efficiency can be greatly improved.

[0003]

By the way, recently, it has been desired that a filling device used for filling a liquid into a bag body made of resin as described above is compatible with a bag body having a larger capacity. However, when the capacity is increased, it is expected that filling may be hindered by overflow of liquid due to remaining air. Therefore, an object of the present invention is to provide a filling device capable of suppressing the remaining amount of air when filling a liquid.

[0004]

In order to achieve the above object, a filling device of the present invention is to fill a liquid into a resin bag having an opening for communicating the inside and outside with the opening. , Positioning means for positioning the mouth portion in a state of facing upward, filling means for filling the bag body with liquid from the mouth portion positioned by the positioning means, and vertically movable below the positioning means. First pressing means having a first pressing body which is provided and presses the bag body whose mouth portion is positioned by the positioning means from below, and vertically provided laterally of the positioning means. The second pressing means having a second pressing body capable of pressing a part of the bag body whose mouth is positioned by the positioning means from above, and a position in the horizontal direction with the second pressing body. In addition, the third is installed vertically And a third pressing means capable of holding a part of the bag body having a pressure body and having the mouth positioned by the positioning means, between the second pressing body and the third pressing means. There is. Thus, before the liquid is filled by the filling means, the bag body is pressed from the lower side by the first pressing body of the first pressing means and a part of the lower side is brought close to the mouth portion positioned by the positioning means. And holding a part of the bag between the second pressing body of the second pressing means provided on the side of the bag and the third pressing body of the third pressing means, The amount of air can be reduced.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION A filling apparatus according to an embodiment of the present invention will be described below with reference to the drawings. First, as shown in FIG. 1, the bag body 1 filled with a liquid has a substantially rectangular shape in which two rectangular resin sheets are superposed and all the edge portions are closed. , Are continuously supplied to the filling device along the connecting direction in a state where a large number of them are connected in series so as to form a strip shape.

Each bag 1 is provided with an opening 2 on its upper surface 1a for allowing the inside and outside to communicate with each other at a position biased to one adjacent bag 1 side. The opening 2 has a substantially cylindrical shape. None, a male screw 3 is formed on the outer peripheral portion of the outer end thereof, an annular guide groove 4 is formed on the outer peripheral portion of the base end, and a cylindrical intermediate portion 5 is formed therebetween. There is. In FIG. 1, reference numeral 1b indicates a lower surface, reference numeral 1c indicates a seal portion which is a boundary portion between adjacent bag bodies 1, 1, and the seal portion 1c is orthogonal to the connecting direction of the bag bodies 1, 1 ,. In the direction (direction perpendicular to the paper surface of FIG. 1).

The filling device 11 shown in FIGS. 2 to 4 and the like has the bag body 1 in which the bag body 1 is continuously connected in a band shape and the mouth portion 2 of each bag body 1 is provided.
Are located on the upper side and on the downstream side, and are supplied with the connecting direction along the supply direction. A pair of guide plates 12 and 12 for guiding the movement of the mouth portion 2 while supporting the mouth portion 2 between each other by being inserted into the guide groove 4 of the portion 2, and the mouths supported by the guide plates 12 and 12. A feeding unit 13 that feeds the bags 1, 1, ... Connected in one direction by pressing and moving the unit 2, and the feeding unit 1.
And a guide portion 14 for guiding the mouth portion 2 of the bag body 1 which is newly moved between the guide plates 12 and 12 by being sent at 3, so that the guide plate 12 is inserted into the guide groove 4. A gripping portion (positioning means) 16 for gripping the mouth portion 2 sent by the feeding portion 13 so as to position the mouth portion 2 at a fixed position, and a liquid from the mouth portion 2 grasped by the grip portion 16 to the bag body 1. Filling part (filling means) 1 for filling the mouth part 2, that is, the bag body 1 with the cap 6 (see FIG. 7, etc.)
7 and a cutting portion 18 for dividing the bag bodies 1, 1, ..., Which are sent in a continuous state with the liquid filled and the mouth portion 2 closed, into the continuous bag 1, the liquid is filled in the continuous state. .. and the transport unit 1 for transporting the divided bag 1
9 and a cardboard setting section 2 for receiving the bag body 1 conveyed by the conveying section 19 into the cardboard 7 in an upper opened state.
0, and a drop hopper 22 for guiding the fall of the bag body 1 transported and dropped by the transport unit 19 to the cardboard 7,
It has a control section (control means) 23 for controlling the operation of the feeding section 13, the gripping section 16, the filling section 17, the cutting section 18, the conveying section 19, the cardboard setting section 20, and the like.

The feeding portion 13 is provided with a feeding body 25 provided at one lateral position with respect to a gap between the guide plates 12 and 12 so as to be movable along the extending direction thereof, and the feeding body 25 in the direction. A feed drive unit 26 such as an air cylinder for reciprocating along
A first feed portion 27 having a feed member 29, a feed member 29 movably provided at another lateral position with respect to the gap between the guide plates 12 and 12 along the extending direction thereof, A feed drive unit 2 such as an air cylinder for reciprocating along a direction
And a second feed portion 30 having

The feeding body 25 of the first feeding portion 27 is provided with a driving portion (not shown) between a position which is supported by the guide plates 12 and 12 and which protrudes toward the mouth portion 2 side and a position where it escapes from the mouth portion 2. An oscillating member 31 that oscillates by driving is provided, and the oscillating member 31 is projected toward the mouth portion 2 side on the upstream side in the feeding direction of the mouth portion 2 in a state where the feeding body 25 is located on the upstream side in the feeding direction. When the feeding body 25 is moved to the downstream side in the feeding direction by the feeding drive section 26 in this state, the swing member 31 presses the mouth portion 2, that is, the bag bodies 1, 1, ... Let Further, from this state, the swinging member 31 is swung in the direction of escaping from the mouth 2 to avoid interference with other mouths 2, and the feed drive unit 26 moves the feed body 25 to the upstream side in the feed direction. ,
Prepare for the next feed.

The feeding body 28 of the second feeding section 30 is also provided with a driving unit (not shown) between a position supported by the guide plates 12 and 12 and projecting toward the mouth 2 side and a position escaping from the mouth 2. An oscillating member 32 that oscillates by driving is provided, and the oscillating member 32 is projected toward the mouth portion 2 side on the upstream side in the feeding direction of the mouth portion 2 in a state where the feeding body 28 is positioned on the upstream side in the feeding direction. When the feed body 28 is moved to the downstream side in the feed direction by the feed drive section 29 in this state, the swing member 32 presses the mouth portion 2, that is, the bag bodies 1, 1, ... Let Further, from this state, the swinging member 32 is swung in a direction of escaping from the mouth 2 to avoid interference with other mouths 2, while the feed driving unit 29 moves the feed body 28 to the upstream side in the feed direction. ,
Prepare for the next feed. The first feeding portion 27 and the second feeding portion 29 actuate the feeding bodies 25 and 28 in the same direction substantially at the same time to press different mouth portions 1 and 1 at the same timing to increase the feeding force. It has become. In the following description, the feeding direction of the bag 1 by the feeding unit 13 (the horizontal direction from right to left in FIG. 2 is simply referred to as the feeding direction).

The gripping portion 16 grips the mouth portion 2 transferred from the guide plates 12 and 12 and positions in both the horizontal and vertical directions, and is provided on the downstream side of the feeding portion 13 in the feeding direction. As shown in FIGS. 5 and 6, the second
A pair of large claw portions 35, 35 extending from the downstream side with respect to the mouth portion 2 sent by the feeding portion 30 and gripping the mouth portion 2 from both sides in the horizontal direction for positioning, 35
The mouth portion 2 is provided on the upper side together with the large nail portions 35, 35.
Has a pair of small claw portions 36, 36 for positioning by grasping from both sides in the horizontal direction.

The large claw portions 35, 35 are provided such that their base ends are rotatable around a vertical axis, and gears 37, 37 are fixed to the large claw portions 35, 35 so as to coincide with the axis, respectively. 37 is meshed. Then, the front end side is opened and closed by rotating one of the gears 37 by a predetermined angle in both forward and reverse directions by a drive unit 34 (see FIG. 3) such as an air cylinder. In addition, each small claw portion 36, 36 has a large claw portion 35,
35 are swingably supported by support shafts 38, 38, which are respectively driven by a drive unit 39 such as an air cylinder.
It is driven by 39 to open and close.

The filling section 17 is, as shown in FIGS.
A filling main body portion 41, which is provided on the downstream side of the feeding portion 13 in the feeding direction, fills the mouth portion 2 gripped and positioned by the grip portion 16 with liquid, and a mouth portion gripped and positioned by the grip portion 16. The closing portion 42 into which the cap 6 is screwed into 2, the moving portion 43 that switches the positions of the filling main body portion 41 and the closing portion 42, and the closing portion 42 with the cap 6
And a cap supply unit 44 for supplying

The cap supply unit 44 stocks a large number of caps 6 and supplies them one by one, and a delivery unit 47 that delivers the caps 6 delivered by the parts feeders 46 to a position where they can be received by the closing unit 42. It consists of and.

The parts feeder 46, as shown in FIG. 7, has a chute 48 that inclines so that its tip end side is located downward.
And two stoppers 49, 50 provided at the tip of the chute 48 so as to project into the chute 48, and projecting drive portions 51, 52 such as solenoids for reciprocating the stoppers 49, 50. ing. These projecting drive portions 51 and 52 project one stopper 49 located on the tip side of the chute 48 and retract the other side stopper 50 to bring one cap 6 into contact with the tip side stopper 49, and in this state. The stopper 50 on the other side is projected to restrict the movement of the cap 6 next to the cap 6,
Further, by pulling in the stopper 49 on the front end side, only the one cap 6 is slid out from the chute 48. In this way, the caps 6 are extended from the chute 48 one by one.

As shown in FIG. 8, the sending unit 47 receives the cap 6 unwound from the tip of the chute 48 and mounts it on the mounting table 53, and the cap 6 unwound on the mounting table 53 on the mounting table 53. It has a delivery body 54 movably provided so as to deliver it to a predetermined tip position, and a delivery drive section 55 such as an air cylinder for reciprocating the delivery body 54.

As shown in FIGS. 9 and 10, the moving portion 43 is provided with a moving body 57 movably provided along a horizontal direction (left-right direction in FIG. 9) orthogonal to the feeding direction, and the moving body 57. And a movement drive unit 58 such as an air cylinder for reciprocating.

A part of the filling main body 41 and the closing portion 42 are provided in parallel with the moving body 43 in the horizontal direction. The filling main body 41 includes a filling nozzle 60 movably provided on the moving body 43 along the vertical direction, an elevating drive unit 61 such as an air cylinder for reciprocating the filling nozzle 60, and a filling nozzle 60. It is composed of a liquid supply unit (not shown) for supplying the liquid and discharging it from the lower opening 60a of the filling nozzle 60 at a predetermined pressure.

Further, the closing portion 42 includes a screwing portion 64 provided on the moving body 57 so as to be movable in the vertical direction, and an elevating and lowering driving portion 6 such as an air cylinder for reciprocating the screwing portion 64.
5 is comprised. The screwing portion 64 has a screwing body 66 that is rotatably provided at the lower end and that can hold the cap 6, and a drive unit such as a motor (not shown) that rotates the screwing body 66.

Here, the moving body 57 aligns the horizontal position of the filling nozzle 60 with the position of the mouth portion 2 which is gripped and positioned by the gripping portion 16 and the horizontal position of the screwing portion 64. It moves so as to move between a filling position for aligning on the cap 6 sent out by the delivery part 47 onto the 53 and a screwing position for aligning the horizontal position of the screwing part 64 on the mouth part 2. When the filling nozzle 60 is lowered at the position, the filling nozzle 60 closes the mouth portion 2 against the outside air, and the lower opening portion 60a thereof is located in the mouth portion 2 so that the liquid can be filled. Joint part 64
And the cap 6 on the mounting table 53 is screwed together.
In addition, the cap 6 is screwed to the male screw 3 of the mouth 2 by lowering the screwing portion 64 and rotating the screwing body 66 at the screwing position. Here, at the time of movement between the filling position and the screwing position, the filling nozzle 60 and the screwing portion 64 are raised.

As shown in FIG. 11, an air cylinder or the like having a vertically movable pressing body 68 located below the mouth 2 in a state of being gripped by the grip 16 is provided below the grip 16. A first pressing portion (first pressing means) 69 is provided.
The first pressing portion 69 raises the pressing body 68 to support the bag body 1 in a state in which the mouth portion 2 is gripped by the gripping portion 16 by the pressing body 68, and supports the lower surface 1b thereof.
(See FIG. 1) is brought into contact with the inner edge of the mouth portion 2 gripped by the grip portion 16, that is, the lower edge portion. The area of the upper surface of the pressing body 68 that supports the bag body 1 is smaller than the area of the bag body 1 that is supported, and supports the inner position of the bag body 1. The first pressing portion 69 can control the upward pressure of the pressing body 68, that is, the pressing force of the bag body 1 by the pressing body 68 by controlling the introduced air pressure.

As shown in FIG. 2 and the like, the transport section 19 is horizontally located along the feeding direction of the bag 1 at a lower position of the filling section 17 and the like, which is separated from the guide plates 12 by a predetermined distance. And a second roller conveyor 7 which is continuous with the roller conveyor 71 and is inclined so that the opposite side to the roller conveyor 71 is located below.
2 and a driving unit (not shown) that rotationally drives all the rollers 72a that are horizontally arranged orthogonal to the transport direction of the second roller conveyor 72. The first roller conveyor 71 and the second roller conveyor 72 have their center positions in the width direction orthogonal to the carrying direction aligned with the center axis of the mouth portion 2 in the gripped state. In addition, the second roller conveyor 7
The position of 2 in the feeding direction is such that the upstream end is upstream of the downstream edge of the bag body 1 in which the mouth 2 is gripped by the grip 16 and is downstream of the mouth 2. It is set to be located on the side. As shown in FIGS. 13 to 16,
A second pressing part such as an air cylinder having a vertically movable pressing body (second pressing body) 100 at a position on the upstream side of the second roller conveyor 72 and on the downstream side of the grip portion 16 ( Second pressing means) 101 is provided. This second
The pressing unit 101 lowers the pressing body 100 to press the part of the bag body 1 in a state where the mouth section 2 is gripped by the gripping section 16 from the upper side by the pressing body 100. The second pressing portion 101 can control the downward pressure of the pressing body 100, that is, the pressing force of the bag body 1 by the pressing body 100 by controlling the air pressure introduced. Further, below the second pressing part 101, a third pressing part such as an air cylinder having a pressing body (third pressing body) 103 which is vertically movable in alignment with the pressing body 100 in the horizontal direction ( A third pressing means) 104 is provided. The third pressing portion 104 is configured to connect the pressing body 103 to the second pressing portion 103.
The bag body 1 in a state in which the mouth portion 2 is grasped by the grasping portion 16 by the pressing body 103 by projecting from the gap between the rollers 72a of the roller conveyor 72 and 72a and raising it.
Part of the pressure body is pressed from below, and when the second pressure portion 101 lowers the pressure body 100 at this time, the pressure body 1 is pressed.
A part of the bag body 1 is clamped between 00 and 00. The third pressing portion 104 can control the upward pressure of the pressing body 103, that is, the pressing force of the bag body 1 by the pressing body 103 by controlling the introduced air pressure.

The cutting unit 18 is the second roller conveyor 7
2 is provided in the upper halfway of the second pressing portion 101 and on the downstream side of the third pressing portion 104, and is arranged in a virtual plane orthogonal to the transport direction of the second roller conveyor 72 and in the virtual plane. And a drive unit 75 such as an air cylinder that reciprocates the cutter 74 up and down, and the cutting unit 18 includes: The position can be changed along the transport direction. Then, normally, the grip 16
Is a boundary portion between the bag body 1 in which the mouth portion 2 is gripped and the bag body 1 which is connected to the bag body 1 and which is already filled with the liquid and in which the mouth portion 2 is closed. It is positioned according to the size of the bag body 1 so that the cutter 74, that is, the virtual plane, is located at the center of the extending seal portion 1c (see FIG. 1). Here, the cutter 74 reciprocates through the gap between the rollers 72a, 72a of the second roller conveyor 72 at the time of cutting, and therefore the rollers 72a, 72a
The pitch of 72a is set to a pitch that allows passage of the cutter 74 whose position is adjusted corresponding to all sizes of the bag body 1 to be handled.

Below the end of the second roller conveyor 72 in the transport direction, a drop hopper 22 is provided along the vertical direction. This drop hopper 22 is shown in FIG.
2, as shown in FIG.
(C) (lateral direction shown in the left and right direction), the side surface portions 83 and 84 extending orthogonally to the inner side width are constant, and the lower side inner width in the horizontal direction orthogonal to the feeding direction is the side surface portion. 8
The side surfaces 85 and 86 extending vertically along the feeding direction so as to be substantially the same as the inner width between the side surfaces 3 and 84, and the inner width on the upper side in the horizontal direction orthogonal to the feeding direction is the side surfaces 85 and 86.
The side surface portions 87 and 88 extending vertically along the feeding direction are connected to the side surface portions 85 and 87 so as to be larger than the inner width between the side surface portions 87 and 88, or the side surface portions 86 and 88 are inclined in a mirror-symmetrical manner so as to be connected. The lower opening 22a, which has a square shape and has inclined surfaces 89 and 90, is slightly larger than the size of the bag 1 filled with liquid, for example.
The drop-down hopper 22 arranges the center position of the inner width in the horizontal direction along the feeding direction, that is, the center position between the side surface portions 83 and 84, vertically below the position of the end portion of the conveying unit 19, and feeds the same. The center position of the inner width in the horizontal direction orthogonal to the direction, that is, for example, the center position between the side surface portions 85 and 86 is arranged vertically below the center position of the transport unit 19 in the same direction.

The corrugated cardboard set portion 20 is mounted on the lower side of the drop-in hopper 22 with the rectangular parallelepiped corrugated cardboard 7 in a state where the upper part thereof is opened and the pair of side surface portions 7a and 7b thereof extend in a direction orthogonal to the feed direction. It has a mounting table 77 on which it is placed and an elevating and lowering drive part 78 that moves the mounting table 77 up and down. On the mounting table 77, a positioning member 79 for positioning the cardboard 7 in the horizontal direction is provided. The positioning member 79 is located at a position where the center position of the inner width between the side surface portions 7a and 7b in the feeding direction (left-right direction shown in FIG. 2) is vertically below the position of the end portion of the second roller conveyor 72. Position the cardboard 7. In addition, cardboard 7
The center position of the inner width between the side surface portions along the feeding direction is, for example, visually arranged by the operator vertically below the center position of the second roller conveyor 72 in the same direction.

The control unit 23 drives the above-mentioned drive units.
Stopping and controlling the driving direction or speed as necessary, and filling nozzle 6 by a liquid supply unit (not shown)
Filling and stopping of liquid via 0, and the first pressing portion 69
It is designed to control the air pressure introduced into the. Then, in this embodiment, the control unit 23 controls the filling unit 1
Before the liquid is filled by 7, the pressing body 68 is raised by the first pressing section 69, and the bag body 1 in which the mouth section 2 is gripped by the gripping section 16 is supported from below by the pressing body 68, and The lower surface 1b is brought into contact with the lower edge portion of the mouth portion 2 gripped by the grip portion 16, and in this case, the pressing body 6 is pressed.
The pressing force of the bag body 1 by 8 is high. When the liquid is filled by the filling unit 17, the pressing force of the bag body 1 by the pressing body 68 of the first pressing unit is set to a predetermined constant filling pressure of the liquid by the filling unit 17 at the same timing as the start of the filling. On the other hand, the pressure is controlled to be low so as to be lowered by a predetermined amount. In addition, what is denoted by reference numeral 81 in FIG. 2 is a leg portion for elevating the entire filling device in response to the inclination of the second roller conveyor 72 so that the downstream side is positioned downward.

Next, the operation of the filling device 11 controlled by the control section 23 will be described. First, one of the ends of the bags 1 in a continuous state is pulled, and the guide portion 14 of the filling device 11 is pulled.
Support the mouth portion 2 between the guide plates 12 and 12 from the side,
Further, the mouth portion 2 of the one end is positioned on the downstream side of the second feeding portion 30. At this time, the bag body 1 connected to the bag body 1
The mouth portion 2 is also sequentially supported by the guide portion 14 between the guide plates 12, 12.

Then, the operator operates to start the filling work. Then, the control unit 23, as shown in FIG.
The first pressing portion 69 is brought into the OFF state where the pressing body 68 is lowered, and the second pressing portion 101 is brought into the OFF state where the pressing body 100 is raised.
The third pressing portion 104 is set to the OFF state in which the pressing body 103 is lowered, and the third pressing portion 104 is positioned on the upstream side and stands by while maintaining the state where these are retracted so as not to interfere with the movement of the bag body 1. The feeding bodies 25 and 28 of the first feeding portion 27 and the second feeding portion 30 of the feeding portion 13 that have been moved are moved to the downstream side almost at the same time. As a result, the swinging members 31 and 32 of the respective feeding bodies 25 and 28 push the different mouth portions 2 and 2 to the downstream side, and in particular, the mouth portion 2 moved by the second feeding portion 30 is opened. Large claw portion 3 of the grip portion 16 waiting in the state
Located between 5 and 35. Subsequently, the controller 23 closes the large claws 35, 35 of the grip 16 and closes the small claws 36, 36. Thereby, the mouth portion 2
Is gripped by the large claw portions 35, 35 and the small claw portions 36, 36 for positioning.

Subsequently, as shown in FIG. 14, the control section 23 introduces air into the first pressing section 69 and raises the pressing body 68 by raising the operating pressure to a high pressure to bring the pressing body 68 into the ON state. The bag body 1 in which the mouth portion 2 is grasped by the grasping portion 16 is supported from below and the lower surface 1b which is a part of the bag body 1 is brought close to the mouth portion 2 grasped by the grasping portion 16, and thereafter the lower side thereof is Abut the edge of. Almost at the same time, air is introduced into the second pressing portion 101, and the operating pressure is increased to lower the pressing body 100 to bring it into the ON state.
Air is introduced into the pressing portion 104, and the operating body pressure is increased to raise the pressing body 103 so that the pressing body 103 is in the ON state, and the bag body 1 in a state in which the mouth portion 2 is gripped by the gripping portion 16 of these pressing bodies 100 and 103. Hold a part of the above from both upper and lower sides at a position slightly lower than the mouth 2. As a result, the mouth portion 2 becomes the grip portion 1
The air inside the bag body 1 held by 6 is discharged to the outside to reduce the amount of air. The pressing bodies 100, 10
3 is slightly behind the timing when the bag body 1 holds the pressing body 6
At 8 the bag 1 is brought into contact with the mouth 2. On the other hand, the stopper 49 on the tip side of the parts feeder 46 of the cap supply part 44 is opened to let one cap 6 be extended to the mounting table, and the cap 6 is advanced by the delivery body 54 of the delivery part 47 to a predetermined position. Position it.

In this state, the control section 23 controls the grip section 1
6, the filling nozzle 60 standing by above is lowered to close the mouth portion 2 to the outside air and the lower opening portion 6 thereof.
0a is introduced into the mouth portion 2 and then liquid is discharged from a liquid supply portion (not shown), and at the same time, the air pressure of the third pressing portion 104 is released to bring the pressing body 103 into the OFF state, so that the pressing body 103 is closed. In addition to lowering the pressure to a position below the second roller conveyor 72, which is irrelevant to the above, the second pressing unit 101 keeps the air pressure low while the ON state is maintained, and the operating pressure, that is, the pressing pressure slightly lower than the predetermined constant filling pressure of the liquid. The body 100 is controlled so as to obtain a pressing force exerted on the bag body 1, and the air pressure is reduced to a low value while the first pressing portion 69 is also in an ON state, so that the operating pressure is slightly lower than a predetermined constant filling pressure of the liquid. That is, control is performed so that the pressing force exerted by the pressing body 68 on the bag body 1 is obtained.

By the above-mentioned operation of the first pressing portion 69, FIG.
As shown in FIG. 5, the pressing body 68 is slightly lowered by the filling pressure discharged from the filling nozzle 60, and the liquid is filled in the bag body 1. Moreover, the bag is increased with the increase in the filling amount of the liquid thereafter. As the weight of the body 1 increases, the descending amount of the pressing body 68 increases. Therefore, in the initial stage of filling, the pressing body 68 enters the inside of the bag body 1 in the horizontal direction and supports the bag body 1 on the upper side, so that the filling body is filled. The liquid comes into the vicinity of the edge portion of the bag body 1 which is not supported by the pressing body 68 first. Further, since the end of the bag body 1 that is farthest from the mouth portion 2 is located at the lowest position due to the inclination of the second roller conveyor 72, the liquid enters first in this portion. In addition, by the above operation of the second pressing portion 101, the state in which the upper portion of the bag body 1 is positioned below the mouth portion 2 is maintained while the liquid is being filled.

The control section 23 lowers the screwing section 64 of the closing section 42 simultaneously with the lowering of the filling nozzle 60, and the feeding section 4
The cap 6 sent out at 7 is fitted into the threaded body 66, and then raised. Then, when a predetermined amount of liquid from a liquid supply unit (not shown) has been ejected through the filling nozzle 60, the control unit 23 stops the ejection of the liquid by the liquid supply unit and the filling nozzle 60. Is moved to move the moving body 57 of the moving section 43 to position the screwing section 64 directly above the mouth section 2 gripped by the gripping section 16, and rotate the screwing section 66 while lowering the screwing section 64. After the cap 6 is screwed onto the male screw 3 of the mouth portion 2, the screwing portion 64
To move the moving body 57 to the original position. On the other hand, as shown in FIG. 16, until the screwing of the cap 6 to the mouth portion 2 is completed, that is, the bag body 1 is sealed, the first pressing portion 6 is pressed.
9 and the second pressing portion 101 maintain the above-mentioned ON state at a low pressure, and after the screwing is completed, the air is released to be in the OFF state. Then, the grasping portion 16 is opened to release the grasping of the mouth portion 2 to complete one filling operation.

The control section 23 repeats the above-mentioned filling work to sequentially introduce the liquid into the continuous bag bodies 1 to close the mouth section 2 thereof, and at the same time, to convey the same by the conveying force of the second roller conveyor 72 in the driven state. Then, the unfilled bag 1 is sent to the downstream side by the sending unit 13. Then, the control unit 23
In the state where one bag body 1 is grasped by the grasping portion 16, the cutter 74 of the cutting section 18 is lowered to separate the most downstream side of the connected bag bodies 1 from other ones, and The cut bag body 1 is transported at a predetermined speed by the second roller conveyor 72 of the transport unit 19 in the driven state. Then, the bag body 1 conveyed by the second roller conveyer 72 falls from the end portion of the bag 1 from the end edge side farthest from the mouth portion 2, and is guided by the drop hopper 22 to the cardboard setting section 20. It is dropped into the cardboard 7 positioned by the positioning member 79.

The filling device 1 of this embodiment described above
According to 1, the following effects can be achieved. Before filling the liquid by the filling unit 17, the pressing body 6 of the first pressing unit 69
8, the bag 1 is pressed from the lower side to bring a part of the lower side closer to the mouth 2 positioned by the gripping section 16, and the pressing body 100 of the second pressing section 101 provided on the side thereof.
By sandwiching a part of the bag body 1 between the bag body 1 and the pressing body 103 of the third pressing portion 104, the amount of air in the bag body 1 can be reduced. Therefore, the remaining amount of air in the bag body 1 at the time of filling the liquid by the filling unit 17 can be reduced,
It is possible to prevent filling failure such as overflow of liquid. For this reason,
It is possible to cope with a large capacity. Further, when the liquid is filled by the filling body 41 of the filling unit 17, the pressing force of the bag body 1 by the pressing body 68 of the first pressing unit 69 is slightly lower than the filling pressure of the liquid by the filling body 41 by a predetermined value. By doing so, almost only the filling pressure acts on the pressing body 68 at the start of filling, and the gap between the inside of the mouth portion 2 and the lower surface 1b which is a part of the bag body 1 supported by the pressing body 68 is minimized. As the filling amount increases, the weight of the filled liquid acts on the pressing body 68 in addition to the filling pressure, and as a result, the pressing body 68 descends following the increase of the filling amount of the liquid. become. Therefore, at the initial stage of filling, the pressing body 68
Since the liquid enters the inside of the bag body 1 in the horizontal direction and supports the bag body 1, the filled liquid is located near the end edge portion of the bag body 1 while the vicinity of the edge portion of the bag body 1 not supported by the pressing body 68 is located below. You will get in first. Therefore, it is possible to prevent the air from remaining in the edge portion where the air is likely to remain, so that the above effect is further enhanced.

At the time of filling, the pressing body 68 enters and supports the inside of the bag body 1 in the horizontal direction, so that the filled liquid is moved downward near the edge portion of the bag body 1 which is not supported by the pressing body 68. While being located at the position, it will enter first near the edge. Therefore, it is possible to prevent the air from remaining at the edge portion where the air is likely to remain, so that the above effect is further enhanced. In addition, the second roller conveyor 72
As for the position in the feeding direction, the upstream end thereof is located upstream of the downstream edge of the bag body 1 in which the mouth 2 is gripped by the grip 16 and downstream of the mouth 2. Since the second roller conveyor 72 is set to be positioned, the bag body 1 is positioned at the end edge side farthest from the mouth portion 2 due to the inclination of the second roller conveyor 72. Therefore, the liquid body comes first in this portion. Will enter. Therefore, it is possible to prevent air from remaining at the edge portion that is farthest from the mouth 2 where air is most likely to remain, and thus the above effect is further enhanced. In addition, since the second pressing portion 101 maintains the ON state at low pressure until the screwing of the cap 6 to the mouth portion 2 is completed, the upper portion of the bag body 1 is positioned below the mouth portion 2. Even if the mouth 2 is opened to the outside air between the separation after the filling nozzle 60 is filled and the screwing of the cap 6 is completed, the state is maintained.
It is possible to prevent air from entering the inside of the bag body 1 due to tension or the like. Therefore, the above effect is further enhanced.

Since the center position of the dropping hopper 22 in the feeding direction of the transport unit 19 is arranged vertically below the end of the second roller conveyor 72 which is the end of the transport unit 19, the bag body 1 is The cardboard 7 is kept in a fixed posture in which the mouth portion 2 is located on the upper side and on the upstream side in the feeding direction without being caught by the drop-in hopper 22 and turned over.
Can be properly accommodated. Moreover, the bag body 1 cut by tilting the second roller conveyor 72 so that the downstream side is located downward is prevented from being conveyed by free fall, and the bag body 1 is sent by the driving force of the second roller conveyor 72. Since the bag 1 is dropped from the end portion of the second roller conveyor 72, the falling speed of the bag 1 is constant, so that the bag 1 can be more reliably dropped and hooked by the hopper 22 or turned over. It can be accommodated in the cardboard box 7 in a fixed posture without any movement.

Since the roller conveyor 72 is used as a device for transporting the bag 1 before and after the cutting section 18, there are many gap positions between the rollers 72a and 72a. By using it as an escape when the cutter 74 passes, the position of the cutting portion 18 can be easily changed according to the size of the bag body 1. Therefore, it is possible to easily deal with various types of bags having different sizes.

[0038]

As described above in detail, according to the filling apparatus of the present invention, the bag body is pressed from the lower side by the first pressing body of the first pressing means before the filling means is filled with the liquid. A part of the lower side of the lever is brought close to the mouth positioned by the positioning means, and the second pressing body of the second pressing means and the third pressing means of the third pressing means provided on the side of the mouth. By sandwiching a part of the bag with the pressing body, the amount of air in the bag can be reduced. Therefore, it is possible to reduce the remaining amount of air in the bag when the liquid is filled by the filling means, so that it is possible to prevent filling failure such as overflow of the liquid. Therefore, it is possible to favorably cope with the increase in capacity.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a bag body used in a filling device according to an embodiment of the present invention.

FIG. 2 is a front view showing a filling device according to an embodiment of the present invention.

FIG. 3 is a plan view showing a filling device according to an embodiment of the present invention.

FIG. 4 shows a filling device according to an embodiment of the present invention.
It is a view seen from the direction A shown in FIG.

FIG. 5 is a plan view showing a grip portion of the filling device according to the embodiment of the present invention.

FIG. 6 is a view of the grip portion of the filling device according to the embodiment of the present invention as seen from the direction B shown in FIG.

FIG. 7 shows a part of a parts feeder of a filling apparatus according to an embodiment of the present invention, (a) is a side view and (b) is a side view.
[Fig. 3] is an arrow view seen from the direction C shown in (a).

8A and 8B show a delivery part of a filling device according to an embodiment of the present invention, FIG. 8A is a plan view, and FIG. 8B is a view seen from the direction D shown in FIG. 8A.

FIG. 9 is a front view showing a part of the filling section of the filling device according to the embodiment of the present invention.

FIG. 10 is a view of a part of the filling section of the filling device according to the embodiment of the present invention as seen from the direction E shown in FIG.

FIG. 11 is a front view showing a first pressing part and the like of the filling device according to the embodiment of the present invention.

FIG. 12 shows a drop hopper of a filling apparatus according to an embodiment of the present invention, (a) is a front view, (b) is a bottom view, and (c) is from the F direction shown in (a). FIG.

FIG. 13 is a front view showing a state of a filling unit and the like of the filling device according to the embodiment of the present invention.

FIG. 14 is a front view showing another state of the filling unit and the like of the filling device according to the embodiment of the present invention.

FIG. 15 is a front view showing still another state of the filling unit and the like of the filling device according to the embodiment of the present invention.

FIG. 16 is a front view showing still another state of the filling unit and the like of the filling device according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 bag 2 mouth part 11 filling device 16 gripping part (positioning means) 17 filling part (filling means) 23 control part (control means) 68 pressing body 69 first pressing part (first pressing means) 100 pressing part 101 2 pressing part (second pressing means) 103 pressing body 104 third pressing part (third pressing means)

Claims (1)

[Claims] 1. A filling device for filling a liquid into a bag body made of resin having a mouth portion for communicating the inside and the outside, and a positioning means for positioning the mouth portion in a state in which the mouth portion faces upward. Filling means for filling the bag body with the liquid from the mouth portion positioned by the positioning means, and a bag body in which the mouth portion is positioned by the positioning means so as to be vertically movable below the positioning means. A first pressing means having a first pressing body for pressing from below, and a bag body in a state in which the mouth part is positioned by the positioning means so as to be vertically movable on the side of the positioning means. A second pressing member having a second pressing member capable of pressing the portion from above, and a third pressing member provided so as to be vertically movable in alignment with the second pressing member in the horizontal direction. The mouth is positioned by the positioning means. Filling apparatus characterized by comprising a third pressing means capable clamping, the during a portion of the bag body and said second pressing member.