JP3533250B2 - Filling method for viscous fluid - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viscous fluid filling method used for filling and packaging a fluid having a high viscosity in the filling and packaging industry.

[0002]

2. Description of the Related Art When a fluid having a high viscosity is filled in a container, the fluidity is extremely poor, so that the fluid is not sufficiently spread to every corner of the container, and air is trapped during filling. As a result, voids are generated in the corners of the container, and air remains in this portion, resulting in unsanitary conditions and inconveniences such as deterioration of appearance during product display.

Alternatively, the filling fluid surface becomes a mountain,
The fluid surface is higher than the container mouth surface, making it difficult to apply the lid.

Because of the drawbacks such as the above, the inventor of the present invention has already filled the viscous fluid capable of removing the amount of air remaining or mixed in the container and stably performing the fixed amount filling in the container. A method and its apparatus are provided. (Refer to JP-A-6-40403) However, a fluid in a state where the filling liquid has neither a thick nor a viscous state is after completion of filling, and the filling liquid drips from the filling nozzle and a string is drawn forever. Because,
After the container is conveyed, this fluid may cause the inconvenience such as stain the neighborhood and the empty container carried into the filling position.

Also, in the case of fluid filling in which the shape of the container is narrowed, that is, the cross-sectional area changes from large to small, with the filling liquid having a relatively low viscosity, the fluid is rapidly discharged from the container opening due to the rapid increase of the filling amount. The fluid pops out or the fluid bounces off the inner wall of the container and wraps the air in the vicinity, which causes the inconvenience that the fluid in the container remains. There were various problems such as.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and the container is rotated at a predetermined number of revolutions to start the fluid filling, and the fluid is being filled. By changing the number of rotations of the container after filling or after filling, the stringing phenomenon that occurs when filling a viscous fluid is eliminated, and the fluid surface after filling is kept horizontal for stable quantitative filling of the container. It is an object of the present invention to provide a viscous fluid filling method that can be carried out.

[0007]

According to the present invention for achieving the above-mentioned object , the cross-sectional area in the container extends upward.
With respect to the container that changes to a small area, while rotating the container by the drive means arbitrarily controlled by the control means,
There than filling nozzle to correspond to the mouth of the container the viscous fluid in the viscous fluid-filled device for filling into the container, before
To the control means, in advance, rotate the container during normal filling.
The rotation control value and the speed lower than the container rotation during the normal filling
And the rotation control value corresponding to the area change
Force, in moving the liquid level due to fluid filling,
While the cross-sectional area in the container does not change, a predetermined rotation control value of the container rotation at the time of filling is determined.
When the container is rotated by the driving means to start fluid filling and the cross-sectional area in the container starts to change, the
Supports area changes that are slower than container rotation during normal filling
Driven by the control means according to the rotation control value
By controlling the means, gradually lowering the rotation speed of the container
A method of filling a viscous fluid that performs fluid filling .

Also, the cross-sectional area in the container is set to extend upward.
The viscous fluid is filled into the container from the filling nozzle corresponding to the mouth of the container while the container is rotated by the drive means arbitrarily controlled by the control means with respect to the container that changes into a small area. In the viscous fluid filling device, the control means is preliminarily provided with a container rotation during filling.
From the rotation control numerical value of the rotation and the container rotation during the normal filling
The rotation control value corresponding to the area change that becomes low speed, and
The rotation control value that is faster than the container rotation during filling
Enter each value and use it to move the liquid level due to fluid filling.
In addition, while the cross-sectional area in the container does not change, a predetermined rotation control of the container rotation during the normal filling is performed.
The container was rotated by the driving means by a numerical value to start fluid filling, and the cross-sectional area in the container began to change.
Area change that is slower than the container rotation during normal filling described above.
According to the rotation control value corresponding to
By controlling the driving means, the rotation speed of the container is gradually decreased.
Continue filling the fluid while
The rotation control is faster than the normal container rotation during filling.
The drive means is controlled by the control means according to a numerical value.
Then, the container is rotated at high speed to prevent the liquid stringing phenomenon.
It is a method of filling a viscous fluid to be eliminated .

[0009]

The viscous fluid filling method of the present invention having the above-described structure has the following actions.

First, when the container does not rotate at the time of filling, the filling nozzle is made to correspond to the filling nozzle and the filling of the viscous fluid is started. Is done and it ends.

At this time, when the stringing phenomenon in which the fluid drips from the tip of the filling nozzle occurs, the driving means is operated by the signal of the control means to rotate the container at a predetermined speed, and the fixed filling is performed. The threading part of the nozzle is cut off instantly.

Further, when the container is filled while rotating during filling, the filling nozzle is made to correspond to the mouth of the container, and the container is rotated at a predetermined speed inputted to the control means by the driving means to The filling of the viscous fluid by the filling nozzle is started.

The viscous fluid filled in the container reaches the bottom by its own weight, and the centrifugal force caused by its rotation causes the centrifugal fluid to flow toward the inner wall of the container so that the viscous fluid is pressed into contact with the viscous fluid. Then, the filled fluid surface is raised while being kept horizontal.

At this time, when filling a container having a constriction or the like, the constriction changes the cross-sectional area from large to small. Therefore, if the container rotation speed is the same, the fluid generated by this rotation is centrifuged. The force increases and the fluid tries to jump out of the container mouth, but the driving means operated by the numerical signal input to the control means changes the rotation speed of the container and suppresses the centrifugal force exerted on the fluid, thereby filling the fluid. Hold the surface horizontally.

At the end of filling the fluid, even if the stringing phenomenon in which the fluid drips from the tip of the filling nozzle occurs, the drive means is operated by the signal of the control means to rotate the container at a higher speed than the normal filling rotation. By doing so, the string pull can be cut off instantly.

[0016]

EXAMPLES Next, an example of the implementation of the viscous fluid filling method according to the present invention will be described with reference to a fluid filling apparatus A suitable for carrying out this method.
Will be described with reference to the drawings.

In FIG. 1, A is a viscous fluid filling device, which is used for filling and packaging a viscous fluid, for example, a fluid having a high viscosity such as mayonnaise, ketchup, shampoo, rinse, a table 1, a container base 2, The container base 2
The lifting and lowering means 3, the driving means 4 for the container base 2, the holding means 5 for the container b, the filling means 6 for the viscous fluid, and the control means 7.

The above-mentioned table 1 is mounted horizontally on a rotary shaft in a rotary filling machine, and is provided with a plurality of mounting positions 1a of the containers b on its peripheral side portion at intervals. The container b is made of transparent or non-transparent glass or plastic.

The container base 2 is inserted into a support cylinder 8 provided on the lower side of the table 1 so as to be able to move up and down at the mounting position 1a, and has a locking piece 9 attached to the upper end thereof. By contacting the bottom of the container b, the container b can be supported stably.

The elevating means 3 is for elevating and lowering the container b in association with the container table 2, and the roller 11 pivotally supported by a mounting member 10 provided on the lower side of the container table 2 lifts the cam 1.
When the table 1 is rotated, the container base 2 is appropriately moved from the standby position to the upper limit position as shown in FIG.

It should be noted that the above-mentioned raising / lowering means 3 adopts a constitution other than the cam type, and although not shown, for example,
A cylinder type, a motor / screw shaft type, or any other conventional type can be selected as appropriate.

The above-mentioned driving means 4 is linked to the container base 2 to rotate the container b at a predetermined speed. An elevating rod 13 extending from the lower end of the container base 2 is provided below the support cylinder 8. The guide cylinder 14 is inserted into the guide cylinder 14 so as to be able to move up and down, and numerical control of an inverter control motor, a servo motor, a stepping motor, or the like can be performed on the guide cylinder 14 via a belt 15 or the like, and the rotation speed can be appropriately converted. Drive motor 16 made
Are linked.

The above-mentioned pressing means 5 is arranged above the container b at the mounting position 1a of the container b, and when the viscous fluid is filled, it holds the mouth of the container b and holds it by the container base 2. A pressing body 20 is attached to a holding member 19 that is urged downward by a spring 18 to a support rod 17 that is hung from above the table 1.

A guide 21 which fits the mouth of the container b is rotatably attached to the pressing body 20 by spreading the lower side into a trumpet shape, and the container base 2 is lifted by the lifting means 3. As the container b rises, the guide 21 is pushed up against the elasticity of the spring 18,
The container b is elastically and rotatably held.

The pressing means 5 may be linked to the driving means 4 so that both the guide 21 and the container base 2 are driven to rotate the container b, or only the guide 21 is driven. The container base 2 may be freely rotatable.

The above-mentioned filling means 6 is a means for quantitatively filling the viscous fluid contained in the liquid supply tank into the container b. For example, although not shown, a piston type filling machine is adopted, A filling nozzle 22 connected to the measuring tank hangs up and down so as to correspond to the mouth of the container b, and is inserted through the through hole 23 provided at the center of the guide 21 to near the bottom of the container b. It is configured to be.

In FIG. 1, numeral 24 is the container base 2
A rotary encoder provided at the lower end of the elevating rod 13 detects the number of rotations of the container base 2 rotated by the driving means 4.

Further, the drive motor 16 of the drive means 4 is linked to a conventional control means 7 such as a computer, and the shape of the container to be filled and the type of the viscous fluid to be filled are of course, The number of rotations of the container b is appropriately converted during or after the filling of the fluid, and the filling status of these is input to the control means 7 in advance, and the driving means 4 is supplied with the progress of the filling of the fluid. The drive motor 16 is operated to change the rotation of the container b.

When the container b is rotationally driven by the combination of the servo motor 16 and the like and the control means 7,
In the mounting position 1a of the container table 2, a deformed container can be used in addition to the round container b, and automatic feeding by a star wheel or the like can be performed, and the container b on the container table 2 can be stopped in any direction. Therefore, the container b can be aligned in the direction.

Next, the operation of the method according to the embodiment of the present invention will be described.

When the container b is supplied to the table 1 by a transfer member (not shown) and placed on the upper mounting position 1a, the elevating means 3 sets the container base 2 below the mounting position 1a.
Rises, the container b is lifted, and the mouth of the container b comes into contact with the guide 21 of the holding means 5 disposed above the mounting position 1a.
It is lifted up against the pressure of the spring 18 and is held by the holding means 5 and the container base 2 at a predetermined pressure.

At this time, when the container b is not rotated at the time of filling, the container b is raised to move the filling nozzle 22 into the container 2
When the viscous fluid is started to be filled after being inserted into the container b or after the filling nozzle 22 is lowered to be inserted into the container b, the fluid is filled up to the mouth of the container accordingly and the inside of the container b is regulated. The amount is filled and the process ends.

At this time, as shown in FIG. 2B, when the string pulling phenomenon p in which the fluid drips from the tip of the filling nozzle 22 occurs, the drive means 4 is operated by the signal of the control means 7 input in advance. Then, when the container b is rotated at a predetermined speed, the threading portion p of the fixed filling nozzle 22 is instantaneously cut off, the fluid surface becomes smooth, and the threading does not stain the outer circumference of the container b.

When the container b is to be filled while rotating, the container b is raised to insert the filling nozzle 22 into the container 2, or the filling nozzle 22 is lowered to enter the container b. After the insertion, the control means 7 sets the number of rotations of the drive motor 16 to rotate the container base 2, and accordingly, the container b is rotated at a desired speed.
The filling nozzle 22 starts filling the viscous fluid therein.

At this time, the viscous fluid filled in the container b reaches the bottom due to its own weight, and the centrifugal force generated by the rotation of the container b moves toward the inner wall of the container b.
While flowing and pressure-contacting, it is filled while moving to the center with continuous filling, and while the container base 2 is lowered by the elevating means 3 or the filling nozzle 22 is raised, the filling fluid surface is always kept horizontal. Raise while holding.

The air in the container b is filled with only the filling liquid without being entrained by the pressure contact of the viscous fluid generated by the centrifugal force.

When the container b to be filled is filled in a deformed container b as shown in FIG. 2 (a), the cross-sectional area increases from C1 to C2, C3 as it goes upward due to this deformed shape.
Therefore, if the rotation speed of the container is the same, the centrifugal force of the fluid generated by this rotation increases when it reaches the portions C2 and C3, and the fluid tends to jump out from the mouth of the container.

Therefore, if the rotation control numerical value corresponding to the volume change is inputted to the control means 7 in advance, the rotation speed of the container b is changed, that is, the rotation speed is changed by the driving means 4 operated by this control signal. To reduce the centrifugal force applied to the fluid and keep the filling fluid surface horizontal.

Further, at the end of filling the fluid, as shown in FIG.
As shown in (b), even if the stringing phenomenon p in which the fluid drips from the tip of the filling nozzle 22 occurs, the rotation control numerical value that is faster than the container rotation during normal filling should be input to the control means 7 in advance. For example, the drive means 7 is operated by the signal of the control means 7 so that the container b is rotated at a speed higher than the filling rotation, and the stringing phenomenon p is instantaneously cut off.

In this way, when the filling of the measured amount of the viscous fluid into the container b is completed in the filling machine A, the container b is stopped by the rotation stop of the container base 2 and the container base 2 is lowered by the elevating means 3. Along with this, the container b descends (the filling nozzle 22 may rise at this time), and the table 1
Return to the standby position in.

Then, the desired amount of viscous fluid is filled in the container b, and after the filling is completed, the fluid surface does not become a mountain, and the ejection of the fluid from the container b and the stringing phenomenon p are reliably eliminated. In addition, no air pocket was formed inside the container.

[0042]

As described above, in the viscous fluid filling method according to the present invention, the container can be rotated or the number of rotations of the rotating container can be changed during or after the filling of the fluid. Even if the stringing phenomenon that occurs when filling a viscous fluid occurs, it can be cut off instantly by rotating the container or by rotating the container at a high speed, so that contamination of the container or the vicinity of the filling due to stringing can be prevented. be able to.

Further, even when filling a deformed container having a different cross-sectional area in the lengthwise direction, by changing the container rotation, it is possible to suppress the fluid from being acted on by the centrifugal force or the like from coming out of the container. It is possible to eliminate the variation of the filling amount and the contamination of the container and the vicinity of the filling, and also to prevent the entrainment of air in the fluid caused by the rebound of the fluid, keep the fluid surface after filling horizontally, and The quantitative filling can be performed stably and with high accuracy. It has special effects such as.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of a viscous fluid filling device adopted in the present invention.

FIG. 2 is a cross-sectional view showing an example of a container used for filling in FIG.

[Explanation of symbols]

A Viscous fluid filling device b container 4 drive means 7 Control means 22 Filling nozzle

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-6-40403 (JP, A) JP-A-3-29701 (JP, A) JP-A-60-77806 (JP, A) Actual development Sho-56- 24402 (JP, U) JP-B 38-20941 (JP, B1) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B67C 3/04 B67C 3/24 B65B 3/18 B65B 3/22

Claims (2)

(57) [Claims] 1. A container according to which the cross-sectional area extends upward
A viscous fluid that causes a viscous fluid to fill the inside of the container from a filling nozzle corresponding to the mouth of the container while the container is rotated by the drive unit that is arbitrarily controlled by the control unit with respect to the container that changes to a small area. In the fluid filling device, the control means is provided in advance with the rotation of the container during normal filling.
Rotation control value and slower than container rotation during normal filling
And the rotation control value corresponding to the area change
Input the data, and when moving the liquid surface by filling the fluid,
As long as the cross-sectional area does not change ,
Drive the above according to the rotation control value of the container rotation during normal filling
The container is rotated by means to start the fluid filling, and when the cross-sectional area in the container starts to change, the normal filling is performed.
Rotation control corresponding to the area change that is slower than the container rotation at the time
The drive means is controlled by the control means according to the control value.
And gradually reduce the number of rotations of the container while filling the fluid.
A method of filling a viscous fluid, which is characterized by: 2. A container according to a cross-sectional area extending upward.
A viscous fluid that causes a viscous fluid to fill the inside of the container from a filling nozzle corresponding to the mouth of the container while the container is rotated by the drive unit that is arbitrarily controlled by the control unit with respect to the container that changes to a small area. In the fluid filling device, the control means is provided in advance with the rotation of the container during normal filling.
Rotation control value and slower than container rotation during normal filling
Rotation control value corresponding to the above area change and normal charging
Rotation control numerical values that are faster than the container rotation during filling
Input the information, and when moving the liquid surface by filling the fluid,
As long as the cross-sectional area does not change ,
Drive the above according to the rotation control value of the container rotation during normal filling
The container is rotated by means to start the fluid filling, and when the cross-sectional area in the container starts to change, the normal filling is performed.
Rotation control corresponding to the area change that is slower than the container rotation at the time
The drive means is controlled by the control means according to the control value.
And gradually reduce the number of rotations of the container while filling the fluid.
Then, after the filling of the fluid is completed,
Depending on the rotation control value that is faster than the machine rotation,
The drive means is controlled by a step to rotate the container at high speed.
A filling method of a viscous fluid, which is characterized by tumbling to eliminate the stringing phenomenon of liquid .