JPH11292024A - Filling apparatus for highly viscous contents - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce an amount of air remaining at bag bottom corners at the time of filling of a bag having an inclined bottom with highly viscous contents by a filling nozzle. SOLUTION: A filling nozzle 2 can be freely raised/lowered, a slide unit 15 attached to a middle (at a position of a shaft 12) of the filling nozzle 2 slides along a slide rail 16 as the nozzle 2 rises/lowers, and a cam roller 19 attached to an upper end of the filling nozzle 2 rotates along a cam 20. Thus as the shaft 12 laterally displaces, the filling nozzle 2 is largely inclined with the shaft 12 as the center as indicated by a solid line and a virtual line as it rises/lowers, and as a result, the tip of the filling nozzle 2 moves approximately along a line (a) equally dividing a bag bottom corner into two and a bag center line (b). Particularly the tip of the filling nozzle 2 is inserted deeply into the center of the bag bottom corner, thereby reducing an amount of air remaining in a triangular region of the bag bottom corner.

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 contents such as whipped cream, mayonnaise, negitro, and the like, which have a higher viscosity and lower fluidity than ordinary liquids, in a bag.

[0002]

2. Description of the Related Art When a conventional filling device having a vertically rising and lowering filling nozzle is used to fill a bag with a slanted bottom, the bag is installed at a position facing the center of the bag mouth as shown in FIG. The filled nozzle N is lowered vertically and inserted from the bag mouth, and stopped when its tip comes slightly before the inclined surface of the bag bottom. In other words, the tip of the filling nozzle is 3
It can be inserted only at a position away from the corner of the angular shape. Then, the discharge of the contents is started at that position, and the filling nozzle N is raised as the contents are piled up in the bag (the hatched portion in the bag schematically shows how the contents are piled up in order. Shown). At this time, if the content has a high viscosity and poor fluidity as described above, the content that comes out of the tip of the filling nozzle and contacts the inner surface of the bag further loses fluidity, and the corners of the triangular shape are removed. The filling is completed in a state where the air A remains therein without entering. Even if the bag is a normal bag having a horizontal bottom, the filling is completed with air remaining in both corners.

[0003]

It is difficult to deaerate the air remaining at the bottom corner of the bag in a subsequent process, and as a result, the deaeration state is poor and the quality of the product is remarkably reduced. Accordingly, an object of the present invention is to reduce the amount of air remaining in the bottom corner of the bag when filling the bag with high-viscosity contents.

[0004]

According to the present invention, a filling nozzle is inserted from a bag opening which opens upward in a bag whose bottom is inclined, and a high-viscosity content is discharged from the tip of the nozzle to fill the bag. In the filling device, the filling nozzle is installed so as to be able to move up and down, and the tip of the filling nozzle is laterally displaced from the corner of the bottom of the bag to the mouth of the bag along the center of the space in the bag as the bag moves up and down. .

Further, in the filling apparatus according to the present invention, the filling nozzle is vertically movable and tilts with the vertical movement, and the vertical center of the tilt is laterally displaced with the vertical movement with the vertical movement, and at the same time, its tip is opposite to the tilting direction. The lateral displacement is set so as to be laterally displaced in the direction, and the lower the descending position, the larger the lateral displacement amount of the inclination and tilting center of the filling nozzle, and the larger the lateral displacement amount of the tip thereof. Alternatively, the filling nozzle is installed so as to be able to move up and down, and the filling nozzle is set so as to be laterally displaced as it moves up and down. The further the further descending, the larger the lateral displacement of the filling nozzle becomes.

The object of the present invention can also be achieved by the following filling apparatus. That is, in a filling device that inserts a filling nozzle from a bag opening that opens upward and discharges high-viscosity contents from the tip thereof and fills the inside of the bag, a press member that clamps a corner at the bottom of the bag is installed. The press device is characterized in that the press member has a curved shape at the top and holds the corner of the bottom of the bag in a curved shape. This pressing member is effective not only for bags having a slanted bottom but also for ordinary bags having a horizontal bottom. In addition, by combining with the above-described laterally displaced filling nozzle, the residual amount of air can be further reduced.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to FIGS. The filling device 1 shown in FIG. 1 is, for example, a well-known intermittent rotary table type bag packing machine.
The filling nozzle 2 is provided at a filling position of the contents and discharges the contents having a high viscosity. The elevating device 3 moves the filling nozzle 2 up and down. The tilting device 4 tilts the filling nozzle 2. The elevating device 3 includes an elevating shaft stand 6 erected on the machine base 5, an elevating shaft 7 guided by the elevating shaft 7 at a predetermined timing by a driving source (not shown) in the machine base 5, and a nozzle support fixed to a tip end thereof. Arm 8, working link 1 pivotally supported at the tip of nozzle support arm 8 by shaft 9.
Consists of zero.

The tilting device 4 includes a nozzle holding member 11 fixed in the middle of the filling nozzle 2, and shafts 12, 13 (shaft 1) fixed on both sides of the nozzle holding member 11 so that their axes coincide with each other.
2 is rotatably supported at the lower end of the operation link 10), a bearing member 14 for rotatably supporting the shaft 13, a slide unit 15 fixed thereto, and a slide rail 16 on which the slide unit 15 slides. And a cam roller mounting member 1 fixed to the upper end of the filling nozzle 2
7, a cam roller mounting shaft 18 fixed thereto, a cam roller 19 rotatably supported by the cam roller 19, a cam 20 on which the cam roller 19 rolls, and a tension spring 21 for urging the cam roller 19 against the cam 20. The base 5 includes a base plate mounting stand 22 and a base plate 23 erected on the upper surface of the base 5. The slide rail 16 and the cam 20 are fixed to the base plate 23 at an angle. In addition, a filling hose 24 is attached to a side surface of the filling nozzle 2,
This filling hose 24 is connected to a supply tank (all well-known and not shown) via a valve, a cylinder and the like.

By the way, if the contents have high viscosity and poor fluidity, the contents coming out of the tip of the filling nozzle 2 and coming into contact with the inner surface of the bag lose further fluidity. Filling nozzle 2
Is desirably inserted into the space of the triangular corner in the bag so as to be deep and substantially at the center of the space, so that the discharged contents are evenly distributed to the left and right. Subsequently, even in the process of rising while discharging the contents into the bag, it is desirable that the tip of the filling nozzle always rises substantially along the center of the space in the bag. In FIG. 1, when a is a triangular bisector of a corner and b is a center line on the left and right sides of the bag, the tip of the filling nozzle 2 is inserted so as to be located substantially on the bisector a. Then, it may be said that when ascending, the ascent rises substantially along the bisector a, and then ascends substantially along the left and right center lines b.

On the other hand, in the filling device 1, the filling nozzle 2 is in the standby position indicated by the solid line in FIG. 1 until the bag W, whose both edges are gripped by the gripper G, turns to the filling position. The filling nozzle 2 stands vertically, and its tip is located slightly above the bag W and faces the center of the bag mouth (center line b).
It's above. Here, when the elevating shaft 7 is lowered, the filling nozzle 2 is lowered via the nozzle support arm 8, the link 10, the nozzle holding member 11, and the like, and at that time, the cam roller 19 rolls along the cam 20 and slides. The unit 15 slides along the slide rail 16. As a result, as shown by the imaginary line in FIG.
Is displaced laterally in the direction of tilt (left in FIG. 1),
At the same time, the tip is laterally displaced in the direction opposite to the tilting direction (right in FIG. 1), and as it descends further, the inclination of the filling nozzle and the lateral displacement of the tilting center are increased, and the lateral displacement of the tip is reduced. It is getting bigger. The filling device 1
In this case, the center of the tilt is laterally displaced in the direction of the tilt.
Can be increased.

When the filling nozzle 2 is tilted and laterally displaced as it descends, the tip of the filling nozzle 2 descends so as to be approximately along the center line b and the bisector a (more precisely, For example, at the lower end, the tip of the filling nozzle 2 is inserted deeply into the corner of the bag W and almost on the bisector a. You. At the time of ascent, the contents are ejected from the bag mouth while discharging the contents while following the trajectory in a direction completely opposite to that at the time of descending. In addition, in the filling device 1, since the leading end (discharge port) of the filling nozzle 2 is always substantially in the direction of the bisector a and the center line b during the ascending end of the filling nozzle 2 and ascending therefrom, Objects are more evenly distributed on the left and right. The hatched portion in the bag schematically shows the contents being stacked in order. As shown above, although the air A remains at the very tip of the corner, the amount of the residue is significantly larger than in the past. Can be reduced.

In the above example, the slide rail 16 and the cam 20 are formed in a linear shape and fixed to the base plate 23 in an angular relationship as shown in FIG. The trajectory of the filling nozzle 2 can be made closer to the bisector a and the center line b by appropriately changing the shape and the inclination. If the mounting angle of the slide rail 16 and the cam 20 can be changed,
The trajectory of the filling nozzle can be adjusted according to the change in the size or shape of the bag W.

The filling device 31 shown in FIG. 2 comprises a filling nozzle 2 for discharging a high-viscosity content, an elevating device 32 for elevating and lowering the filling nozzle 2, and a lateral displacement device 33 for displacing the filling nozzle 2 laterally. Except for the lateral displacement device 33, it has the same structure as the filling device 1 (equivalent portions are given the same numbers). The lateral displacement device 33 includes a nozzle holding member 3 fixed to the vicinity of the upper end of the filling nozzle 2 with a vertical distance.
4 and 35, parallel link support members 36 and 37 fixed at a distance in the vertical direction near the upper end of the elevating shaft stand 6, one end is rotatably supported by the parallel link support member, and the other end is a nozzle holding member. And two pairs of parallel links 38 to 41 (the link 38 is connected to the lower end of the operating link 10 via a pin 42).

In this filling device 31, the filling nozzle 2
Is always in a vertical position, and is in a standby position shown by a solid line in FIG. 2 until the bag W whose both edges are gripped by the gripper G is rotated to the filling position. It is located facing the center. Here, when the elevating shaft 7 is lowered, the parallel links 38 to 41 swing downward, and as shown by the phantom line in FIG. Has a large lateral displacement.

When the filling nozzle 2 makes such a lateral displacement when descending, the tip of the filling nozzle 2 descends (approximately) along the center line b and the bisector a (see FIG. 1). To be precise, it slightly descends slightly above these lines and descends). At the descending end, the tip of the filling nozzle 2 is located deep in the corner of the bag W and almost on the bisector a. Is inserted into. At the time of ascent, the contents are ejected from the bag mouth while discharging the contents while following the trajectory in a direction completely opposite to that at the time of descending. The hatched portion in the bag schematically shows the contents being stacked in order. As shown above, although the air A remains at the very tip of the corner, the amount of the residue is significantly larger than in the past. Can be reduced. However, filling nozzle 2
During the ascending and descending ends of the bag, the tip (discharge port) is not directed in the direction of the bisector a, so that the discharged contents are distributed to the left and right, especially in the triangular area at the bottom corner of the bag. The filling device 1 has a slightly better uniformity.

The filling device 51 shown in FIGS. 3A and 4
Is a conventional type of filling device in which a filling nozzle N vertically moves up and down, and further includes a pressing device 52. The press device 52 includes a pair of press plates 53 whose upper portions are curved,
54, and an opening / closing device 55 (see FIG. 4) for opening and closing the same. The opening / closing device 55 includes support arms 56 and 57 to which press plates 53 and 54 are fixed, and rotating shafts 58 and 59 to the rear ends. Gears 60, 61 fixed to the rotating shafts 58, 59 and meshing with each other, an operating air cylinder 62, one end is fixed to one rotating shaft 59, and the other end is rotatably supported at the tip of the cylinder rod. The press plates 53 and 54 are opened and closed by the operation of the air cylinder 62.

In the example shown in FIG.
Corners C at the bottom of the bag ₁And side corner C
₂In a curved shape, and make the two films adhere
To expel the air in advance, and the bags and press plates 53, 54
Intersection C with the upper part of₃, C ₄No new corner
The curved shape is devised as follows. And then filling nozzle 2
High content of clay because the contents are discharged by
Even objects are easy to fill every corner. Press plate 53, 5
Although the portion sandwiched in step 4 is not filled with contents,
Because no air remains in the area, for example, after sealing
Just hold down the bag and the contents
Good.

On the other hand, the example of FIG.
Since the upper 65 has a linear configuration, although it is possible to turn off the corners C ₁ of the sharp bag bottom, new corners C ₅ at an intersection of the top and the bag of the press plate 64 and _65, C _Since air ₆ is formed, air A is likely to remain there, which is better than the conventional example of FIG. 6, but the effect is not so great. FIG.
Examples of (b) are those by curved press plates 66 and 67 sandwiching the corner portion C ₁ of the bag bottom is curved. In this case, new corners C ₅ and C ₆ are formed at the intersections between the bag and the upper portions of the press plates 66 and 67.
The angle of the corner becomes gentle because the top of is curved,
Since the amount of air remaining there can be small, FIG.
The effect is much greater than the example of (c).

It should be noted that such a pressing member can be applied not only to a bag having a sloped bottom but also to a bag having a normal bottom if it is filled with a high content of clay (bottom portion). Between both corners).

The filling device 71 shown in FIG. 5 has a configuration in which a pressing device 72 is further provided in the filling device 1. The press device 72 includes a pair of press plates 73 whose upper parts are curved,
The press plate 73, 74 sandwiches the corner of the bottom of the bag, and discharges the contents by the filling nozzle 2. The tilting filling nozzle 2 and the press plates 73 and 74
, The residual air can be further reduced.

[0021]

According to the present invention, the amount of air remaining in the bottom corner of the bag can be greatly reduced when filling the bag with contents having high viscosity, so that the quality of the product does not deteriorate.

[Brief description of the drawings]

FIG. 1 is a front view and a side view of a filling device according to the present invention.

FIG. 2 is a front view and a side view of another filling device according to the present invention.

FIG. 3 shows still another filling device (a) according to the present invention;
(B) and the filling device (c) used for comparison.

FIG. 4 is a diagram illustrating an opening and closing mechanism of a press plate.

FIG. 5 is a front view and a side view of still another filling device according to the present invention.

FIG. 6 is a diagram illustrating a conventional filling device.

[Explanation of symbols]

 2 Filling nozzle 3, 32 Lifting device 4 Tilting device 12 Axle (tilting center) 16 Slide rail 20 Cam 33 Lateral displacement device 53, 54, 64-67, 73, 74 Press plate a Bisection line at bottom corner of bag b Center line of bag

Claims (4)

[Claims] 1. A filling device in which a filling nozzle is inserted from a bag opening opening upward of a bag whose bottom is inclined, and a high-viscosity content is discharged from the tip of the filling nozzle to fill the inside of the bag. Filling device for high-viscosity contents characterized by being freely installed and being displaced laterally along the center of the space in the bag from the corner at the bottom of the bag to the mouth of the bag as the bag moves up and down. . 2. A filling device which inserts a filling nozzle from a bag opening which opens upward in a bag whose bottom is inclined, and discharges highly viscous contents from the tip thereof to fill the inside of the bag. It is set so that it freely tilts as it moves up and down, and its tilting center is laterally displaced in the direction of tilting as it moves up and down, and at the same time its tip is laterally displaced in the direction opposite to the direction of tilting,
Further, the filling apparatus for filling high-viscosity contents is characterized in that the lower the descending position, the larger the lateral displacement of the inclination and the center of tilt of the filling nozzle, and the larger the lateral displacement of the tip. 3. A filling device in which a filling nozzle is inserted from a bag opening opening upward of a bag whose bottom is inclined, and a high-viscosity content is discharged from the tip thereof to fill the inside of the bag. A filling device for high-viscosity contents, wherein the filling nozzle is set so as to be freely movable, and is set so that the filling nozzle is laterally displaced as it moves up and down. 4. A filling device which inserts a filling nozzle from a bag opening which opens upward, discharges high-viscosity contents from the tip of the filling nozzle and fills the inside of the bag with a press member for clamping a corner at the bottom of the bag. And a press member having a curved top and a corner at the bottom of the bag being curved in a curved shape.