JP2001322602A - Method and apparatus for filling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fill a correct amount in a filling apparatus 1 which is filled separately over a plurality of times in a plurality of filling sections B, D while measuring the weight of a container 2 after filling by the primary filling section B and feeding back it. SOLUTION: A star wheel 4 intermittently rotates, and containers 2 are held in pockets 4a formed at equal intervals around an outer periphery of the wheel 4 for carrying them by one pitch at a time, A tare weight measuring section A, the primary filling section B, a primary filled weight measuring section C, a supplementary filling section D and a final filled weight measuring section E are placed in this sequence from an upstream at a stop position of the container 2. A small quantity filling nozzle 14 and large quantity filling nozzles 16, 18, 20 by filling with a timer are provided in the primary filling section B. An actually measured filled amount measured by the primary filled weight measuring section C is compared with a set filled amount after primary filling, and a difference if any is fed back to the primary filling section B. Especially when there is a difference of 10 g or more, the difference in a unit of 10 g is adjusted by the large quantity filling nozzles 16, 18, 20 and a difference in a unit of 1 g is adjusted by the small quantity filling nozzle 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling method and a filling device for filling a container with a liquid, and more particularly, to filling a plurality of times in a plurality of filling sections and measuring the filling amount by a load cell. And a filling device.

[0002]

2. Description of the Related Art The entire amount of a prescribed amount of a filling liquid to be filled in one container is divided into a plurality of times by filling nozzles provided in a plurality of filling sections, and the amount of liquid finally filled is determined. Filling devices for keeping the pressure constant are conventionally known. In addition, in order to obtain a particularly accurate filling amount, the filling amount in the container is measured in the middle of a plurality of filling times, feedback control is performed according to the measured weight, and further, feed-forward control is performed. An apparatus is already known (Japanese Patent Publication No. 62-25971).

The conventional filling device described in the above publication is
A tare weight measuring unit for measuring the weight of an empty container, a coarse filling machine for filling an empty container with 90 to 95% of the product weight, and a coarse filling weight measuring unit for measuring the weight of a container after being filled by the coarse filling machine. A correction filling machine that fills the container filled with the coarse filling machine with the insufficient weight, and a total weight measuring unit that measures the weight of the container after the filling by the correction filling machine.

[0004] Then, after the roughly filled container is measured by the roughly filled weight measuring unit in the above described rough filling machine, the measured value is compared with a set value (the set roughly filled amount) by a control device. Feedback control of the rough filling machine is performed in accordance with the comparison value, and feed forward control is performed in which the difference between the measured value of the coarse filling weight and the target filling amount (final filling amount) is filled by the correction filling machine. .

[0005]

In the case where a single rough filling machine is used to carry out the rough filling (primary filling) as in the above-mentioned conventional filling apparatus, most of the total weight of the rough filling machine (the above-described example) is used. 90-95%), high capacity cannot be obtained unless the filling weight per unit time is increased. However, in such a coarse filling machine having a large filling weight per unit time, it is difficult to finely adjust the filling amount when performing the feedback control, and it is difficult to perform an accurate filling amount. Was.

The invention according to claim 1 has been made in order to solve the above-mentioned problem, and it is possible to fill most of the total filling amount at a high speed in a large throwing filling step in which a large amount is charged per unit time. Moreover, it is an object of the present invention to provide a filling method capable of finely adjusting the filling amount in a small throw filling step in which a small amount is charged per unit time so that an accurate final filling amount can be obtained. It is assumed that.

Another object of the present invention is to solve the above-mentioned problem, and a large-throwing filling nozzle having a large input amount per unit time allows a large portion of the total filling amount to be processed at a high speed. A filling device which can be filled, and in which the filling amount can be finely adjusted by a small throw filling nozzle having a small input amount per unit time so that an accurate final filling amount can be obtained. The purpose is to provide.

The above-mentioned conventional filling apparatus is an apparatus for filling powder, but in the case of a filling apparatus for filling a container with a liquid, the viscosity of the filling liquid changes due to a change in temperature.
In the case of a mixed liquid, the viscosity at the time of filling also changes due to a slight change in the mixing ratio, so that the flow rate during filling changes. Therefore, there is a problem in that the final filling amount varies even when the difference between the measured value in the measuring section and the set target value is fed back.

A third aspect of the present invention has been made to solve the above-mentioned problem, and is based on a comparison result between a set filling amount in a primary filling section and a measured filling amount in a measuring section, and the filling of a refilling section is performed. It is an object of the present invention to provide a filling device capable of performing accurate filling by performing feedforward control of a nozzle.

[0010]

According to the filling method of the present invention, a filling liquid in a volume less than a prescribed filling amount is filled in a container in a primary filling section, and a liquid is filled in the primary filling section in a measuring section. Measuring the weight of the filled container, having a filling step of replenishing the filling liquid to a prescribed filling amount in the container filled in the primary filling unit in the refilling filling unit, based on the filling amount measured in the measuring unit The filling amount to be refilled by the refilling unit is determined, and the filling amount of the primary filling unit is corrected, and further, the container is filled in the primary filling unit according to a set time. A small throw filling step and a large throw filling step of charging the filling liquid into the tank and comparing the set filling amount in the primary filling section with the filling amount measured in the measuring section, the error amount is less than a predetermined amount. Only increase or decrease the set time of the small throw filling process. It is obtained so as to adjust the filling amount in the primary filling portion.

A filling device according to a second aspect of the present invention provides a primary filling section for filling the container with an amount of filling liquid less than a prescribed filling amount, and a weight of the container filled with liquid in the primary filling section. And a replenishment filling unit that replenishes the container filled with the primary filling unit with a filling liquid up to a prescribed filling amount.
A transport unit that transports containers and sequentially positions the primary filling unit, the weighing unit, and the refilling unit, and sets a filling amount to be refilled by the refilling unit based on the filling amount measured by the measuring unit. In addition, a control device for correcting the filling amount of the primary filling section, and in particular, the primary filling section is provided with a plurality of filling nozzles for supplying a filling liquid to a container according to a set time. In addition, the plurality of filling nozzles are constituted by at least one small throw filling nozzle and at least one large throw filling nozzle.

Further, the filling device according to the third aspect of the present invention provides a primary filling section for filling the container with an amount of filling liquid less than a prescribed filling amount, and a weight of the container filled with liquid in the primary filling section. Measuring section, and a refilling section for refilling the container filled with the primary filling section with a filling liquid up to a prescribed filling amount, and sequentially transporting the container to the primary filling section, the measuring section and the refilling section. The transport means to be positioned, based on the filling amount measured by the measuring unit, comprising a control device to set a filling amount to be refilled in the refilling unit, further,
The primary filling unit and the replenishment filling unit are each provided with a filling nozzle for supplying a filling liquid to a container according to a set time, and the control device measures a set filling amount in the primary filling unit and a measuring unit. And a calculating unit for predicting the filling amount per unit time of the filling nozzle provided in the refilling unit based on the comparison result.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. FIG. 1 is a front view of a filling device according to an embodiment of the present invention, and FIG. 2 is a plan view thereof. This filling device (indicated by the reference numeral 1 as a whole) includes a star wheel (transporting means) 4 in which a plurality of pockets 4 a for receiving a container 2 are formed on the outer peripheral surface at equal angular intervals, and is arranged on the outer peripheral portion of the star wheel 4. (A primary filling section B on the upstream side and a refilling section D on the downstream side).
The star wheel 4 is driven by a servo motor (not shown) to intermittently rotate by an angle corresponding to one pocket 4a.
The containers 2 conveyed by each of the filling portions B are transferred and held one by one in each pocket 4a of the star wheel 4, and are intermittently rotated and conveyed by an angle of one pocket 4a. , D are sequentially filled with liquid. The container 2 filled with liquid is supplied to a container discharge conveyor 8.
Is discharged from the filling device 1.

A fixed plate 10 is disposed below the star wheel 4, and an annular transport guide 12 is disposed on the outer peripheral side of the star wheel 4, from the supply conveyor 6 to each pocket of the star wheel 4. The container 2 delivered to 4a rests on the fixing plate 10,
The outer surface is rotatably transported while being supported by the transport guide 12.

The primary filling section B includes a star wheel 4
The four filling nozzles 14, 16, 18, 20 are arranged at the same intervals as the intervals of the pockets 4a, and the container 2 conveyed intermittently by the rotation of the star wheel 4 is filled with the respective filling nozzles 14, 16, , 18, and 20, the liquid is filled by a predetermined amount from each of the filling nozzles 14, 16, 18, and 20.

Each of the four filling nozzles 14, 16, 18, and 20 disposed in the primary filling section B is driven by an air cylinder and is opened for a time set by a timer to fill the container 2 with the filling liquid. And a first filling nozzle 14 disposed at the most upstream side thereof.
Is a small throw filling nozzle with a small input amount per unit time. The second to fourth filling nozzles 16, 18, and 20 sequentially arranged downstream of the large-throw filling nozzle 14 each have a larger input amount per unit time than the small-throw filling nozzle 14. It is.

At the upstream side of the primary filling section B, a tare weight measuring section A for measuring the tare of the empty container 2 supplied from the container supply conveyor 6 is provided. In the tare weight measuring section A, a measuring table 26 connected to a load cell 24 is installed in a hole slightly larger than the diameter of the bottom of the container 2 formed in the fixing plate 10. Pitch (star wheel 4 pocket 4
When the container 2 which is intermittently rotated and conveyed by an angle of (a) is positioned on the weighing table 26 of the tare weighing unit A and stopped, the weight is measured by the load cell 24. .

A primary filling weight measuring section C is provided downstream of the primary filling section B to measure the weight of the container 2 after the liquid has been filled in the primary filling section B. In the primary filling weight measuring section C, similarly to the tare weight measuring section A, the weighing table 26 connected to the load cell 24 is located in a hole larger than the diameter of the bottom of the container 2 opened in the fixing plate 10. The container 2 conveyed intermittently by the star wheel 4 is intermittently rotated by the temporary filling weight measuring section C.
The weight is measured by the load cell 24 when it is stopped on the weighing table 26.

Downstream of the primary filling weight measuring section C, a refilling section D having one refilling nozzle 28 is provided. Like the filling nozzles 14, 16, 18, and 20 disposed in the primary filling section B, the refilling filling nozzle 28 is also driven by an air cylinder and is filled in the container 2 for a time set by a timer. This is a timer filling nozzle for supplying a nozzle. In general, a filling device that includes a primary filling unit and a replenishment filling unit, and performs filling in a plurality of times with a plurality of filling nozzles, fills most of the specified filling amount in the primary filling unit, and removes the remaining amount. Since the correct filling amount is obtained by adding in the refilling section, the refilling nozzle 28 also has a small filling amount per unit time, and is capable of fine flow rate adjustment. A filling nozzle is used.

At the downstream side of the refilling section D, the refilling section D
And a final filling weight measuring unit E for measuring the weight of the container 2 filled with the liquid. The final filling weight measuring section E also has a container 2 formed on the fixed plate 10 similarly to the tare weight measuring section A and the primary filling weight measuring section C.
A weighing table 26 connected to the load cell 24 is located in a hole larger than the diameter of the bottom of the weighing table 24, and has been conveyed by the star wheel 4 by one pitch (the angle corresponding to one pocket 4a of the star wheel 4). When the container 2 is positioned on the weighing platform 26 and stopped, the weight of the container 2 is measured by the load cell 24.

Each of the filling nozzles 14, 1 of the primary filling section B
6, 18, 20 and the filling nozzle 28 of the replenishment filling section D are all mounted via a bracket 34 on the lower surface of the filling liquid tank 32 installed on the elevating stand 30. The elevating stand 30 can adjust the vertical position by raising and lowering the upper filling liquid tank 32, and the filling liquid tank 32 and the filling nozzles 14, 16, 18, 20, 28 according to the size of the container 2 and the like. Adjust the height of the

The container 2 is rotated by the rotating star wheel 4.
In order to stably convey the container 2, a pocket 4a for holding the container 2 is formed on the outer peripheral surface of the star wheel 4, and the container 2 is accommodated in the pocket 4a. An arc-shaped conveyance guide 12 concentric with the star wheel 4 must be arranged to guide the outer surface side of the container 2. However, when the container 2 is in contact with the star wheel 4 and the transport guide 12 when the container 2 is measured by the load cell 24, accurate measurement cannot be performed. Therefore, in the filling device 1 according to the present embodiment, when performing weighing in each of the weighing units A, C, and E, the container 2 does not come into contact with the star wheel 4 and the transport guide 12 so that accurate weighing can be performed. In addition, a movable guide 22 that can move forward and backward is provided on the transport guide 12 side of each of the measuring units A, C, and E. The movable guide 22 has a position (position shown in FIG. 2) that forms a part of the guide surface of the transport guide 12 by driving means (not shown) such as a cylinder.
It can move forward and backward to a position that is separated outward and does not contact the container 2. Also, on the star wheel 4 side,
A driving means (not shown) such as a cylinder for moving forward and backward to push out the container 2 to release the contact with the star wheel 4 is provided.

Each of the filling nozzles 14, 16, 18, 2
The filling times of 0 and 28 are controlled by the timer 38 of the control device 36. Each of these filling nozzles 14, 16, 1
Each of the containers 8, 20, and 28 is opened for a time set by the timer 38, and fills the container 2 which is intermittently conveyed one pitch at a time by the star wheel 4 for filling.

The controller 36 includes a tare weight measuring section A, a primary filling weight measuring section C, and a final filling weight measuring section E.
Is provided with a calculation unit 40 for comparing the actually measured filling amount with the set filling amount, and setting the timer 38 according to the comparison value. The time is adjusted to change the filling time of the filling nozzles 14, 16, 18, and 20 of the primary filling section B and the filling nozzle 28 of the refilling section D.

For example, if the actual filling amount measured by the primary filling weight measuring section C of the container 2 filled with the filling liquid in the primary filling section B is compared with a preset filling amount, and there is an error. This is fed back to the small filling nozzle 14 and the large filling nozzle 1 of the primary filling section B.
The timer setting time of one or more of the nozzles 6, 18, and 20 is corrected. Further, the difference between the measured value in the primary filling weight measuring section C and the specified filling amount to be finally filled is calculated, and this difference, that is, the shortage until the specified filling amount is reached, is refilled by the refilling section D. The required filling time is calculated and instructed so that the filling is performed by the filling valve 28.

Further, the refilling filling valve 28 of the refilling filling section D is previously set to the small throw filling valve 14 of the primary filling section B.
By performing filling for a certain period of time with each of the large throw filling valves 16, 18, and 20, the flow rate is measured and compared to obtain data on the flow rate ratio. Therefore, with respect to the replenishment filling valve 28, the small throw filling valve 14 and the large throw filling valves 16, 18, and
From the actual measured value of the filling amount according to 20, the flow rate according to the current liquid quality can be predicted. Therefore, based on the filling amount set by the timer 38 in the primary filling section B and the actual measurement value in the primary filling weight measuring section C, the time required to fill the shortage until reaching the specified filling amount is calculated. , Feed-forward control for instructing the refill nozzle 28 is performed.

After filling by the refill nozzle 28 in the refill section D, the weight of the container 2 is measured in the final filling weight measuring section E. The actual measured value is compared with the estimated value in the feedforward control, and the error is fed back to the refill nozzle 28 as correction data for the next charging. Also, data as a final filling amount is collected. Further, if the specified filling amount is exceeded, an error display is performed or a reject signal is output.

The filling liquid tank 32 is provided with one or both of a liquid level detecting means and a pressure gauge, and measures the liquid level or pressure of the filling liquid in the filling liquid tank 32. To determine the flow rate.

Next, the operation of the filling device according to the above configuration will be described with reference to an embodiment. When the liquid to be filled is X, the data of the flow rate per unit time is acquired by actually filling the filling liquid X for each of the filling nozzles 14, 16, 18, 20, and 28. From the data of the flow rate, data of the minimum flow rate which can be adjusted by setting the time of the timer 38 is obtained.

In this embodiment, when the filling liquid is X, the flow rate per unit time of each of the filling nozzles 14, 16, 18, 20, and 28 is as follows.
100 g per second, three large throw filling nozzles 16, 18, and 20 of the primary filling section B each have 200 g / sec.
g, the filling nozzle 28 of the replenishment filling section D is 80
g. The filling amount of the small throw filling nozzle 14 can be adjusted by the timer 38 in 0.01 second units, and the minimum adjustable flow rate is 1 g. Also, the large throw filling nozzles 16, 18, and 20 are provided with a timer 3
8 is adjustable in 0.05 second increments, the minimum adjustable flow rate being 10 g. In addition, the refill nozzle 28 is adjustable by the timer 38 in 0.001 second increments, with a minimum adjustable flow rate of 0.08 g.

In this embodiment, the prescribed filling amount finally filled in the container 2 is 680 g, and the timer 3
8 is initially set to the following time and each filling nozzle 14, 1
By performing filling from 6, 18, 20, and 28, respectively, the total filling amount by the five filling nozzles 14, 16, 18, 20, and 28 is 680 g. First, the timer setting time of the small throw filling nozzle 14 of the primary filling section B is set to 1 second, and filling of 100 g × 1 second = 100 g is performed. Next, the three large throw filling nozzles 16, 18, and 20 of the primary filling section B are set to 200 g × 0.9 seconds × 3 = 540 g, with the respective timer setting times being 0.9 seconds.
Is filled. Therefore, in the primary filling section B, 6
It is set to perform filling of 40 g. Then, the filling nozzle 28 of the last replenishment filling section D sets the timer 38 to 0.5 seconds, and performs filling of 80 g × 0.5 seconds = 40 g. Timer 38 of the primary filling section B and the refilling section D
Is set as described above, the total set filling amount becomes 680 g.

Each of the filling nozzles 14, 16, 18, 20, 2
The timer filling time of No. 8 is set as described above, and the production operation of the filling device 1 is started. The containers 2 conveyed by the container supply conveyor 6 are delivered one by one to each pocket 4 a of the star wheel 4.
Are intermittently rotated, so that the paper is rotated and conveyed by one pitch of the pocket 4a. When the container 2 conveyed by the star wheel 4 stops at the position of the tare weighing section A, a weighing table 26 connected to the load cell 24 is disposed in the tare weighing section A.
The weight of the empty container 2 on top is measured. When the container 2 is weighed by the tare weight measuring section A, the star wheel 4
The container 2 is pushed out by the drive means on the side, and the movable guide 22 is retracted so as not to contact the container 2.

Empty container 2 weighed by tare weighing unit A
The star wheel 4 rotates by one pitch and stops at the position where the small-projection filling nozzle 14 of the primary filling section B is provided. Here, filling is performed for a preset time (1 second in this embodiment) by the timer 38 (small throw filling step). The container 2 in which the first filling has been performed by the small throw filling nozzle 14 is placed below the second filling nozzle (the first large throw filling nozzle 16) by the rotation of the next one pitch of the star wheel 4. Stop. The large throw filling nozzle 16 performs filling for 0.9 seconds. The container 2 is similarly stopped thereafter below the third filling nozzle (the second large-throw filling nozzle 18) and the fourth filling nozzle (the third large-throw filling nozzle 20). , For 0.9 seconds (large throw filling step).

In the primary filling section B, the first small throw filling nozzle 14 and the three large throw filling nozzles 1 downstream thereof
The container 2 filled by 6, 6, 20 is sent to the primary filling weight measuring section C by the rotation of the star wheel 4. This primary filling weight measuring section C also has a load cell 2
A weighing table 26 connected to the weighing table 4 is arranged, and the container 2 placed on the weighing table 26 is weighed. At the time of weighing, the star wheel 4
While the container 2 is pushed out by the driving means on the side, the movable guide 22 is retracted so as not to contact the container 2,
Accurate weighing is performed.

The actual measured value in the primary filling weight measuring section C is input to the control device 36, and is compared in the arithmetic section 40 with the filling amount set by the timer setting time. Although the set filling amount in the primary filling section B based on the timer setting time is 640 g, the set filling amount and the actually measured filling amount measured in the measuring section C (the measurement value of the primary filling weight measuring section C−the tare weight measuring section). A), the filling nozzles 1 of the primary filling section C are
Feedback is provided to 4, 16, 18, and 20.

Each of the filling nozzles 14, 16, 18, and 18 of the primary filling section B is based on the measured filling amount in the primary filling
When feedback control for adjusting the timer setting time of 20 is performed, in this embodiment, an error of 10 g or more is adjusted by the large throw filling nozzles 16, 18, 20 and the small throw filling nozzle 14, and 1 to 9 g. That is, an error of 9 g or less is adjusted only by the small throw filling nozzle 14. For example, when the measured filling amount is 629 g, the error from the set filling amount (640 g) is -11 g.
+ With any one of the large throw filling nozzles 16, 18, and 20
Make an adjustment of 10 g. That is, in order to add 1 g with the small throw filling nozzle 14, the timer setting time is set to 0.01.
Add seconds and change to 1.01 seconds. Also, in order to add 10g with the large throw filling nozzles 16, 18, and 20,
Add 0.05 seconds to any one of the timer setting times and change it to 0.95 seconds.

For example, if the measured filling amount in the primary filling weight measuring section C is 643 g, the error from the set filling amount (640 g) is +3 g. Make an adjustment of -3 g. That is, the timer setting time is changed to 0.97 seconds by subtracting 0.03 seconds.

As described above, the control device 36 performs feedback control on each of the filling nozzles 14, 16, 18, and 20 of the primary filling section B according to the measured filling amount in the primary filling weight measuring section C. Further, feedforward control to the replenishment filling section D is performed based on the measured filling amount. For example, when the measured filling amount in the primary filling weight measuring section C is 635 g, the amount obtained by subtracting the filling amount in the primary filling section B from the prescribed filling amount (final filling amount) in the refilling filling section D. (68
(0 g-635 g = 45 g).

In order to finally reach the prescribed filling amount (680 g), the time of the timer 38 is set and instructed so that the filling nozzle 28 of the replenishment filling section D performs the filling of 45 g. Since there is an error between the actually measured filling amount at B and the filling amount based on the timer setting time based on the flow rate per unit time at the beginning (640 g should be filled but only 635 g is filled). D
However, the filling time by the timer was changed to the initial flow data (1
If it is set at 80 g per second), an error occurs in the actual filling amount.

Therefore, the flow rate of the filling liquid X according to the current liquid quality is predicted, and the timer set time of the filling nozzle 28 of the replenishment filling section D is corrected. That is, while the set filling amount in the primary filling section was 640 g, the measured filling amount was 635 g.
g. That is, in the current liquid quality, the set filling amount of 9
Only 9.2% (635 g ÷ 640 g ≒ 99.2%) could be filled. From this measured value, the flow rate per unit time in the refilling section D is predicted, and the timer setting time of the refilling nozzle 28 is corrected. That is, the flow rate per unit time of the refill nozzle 28 is 80 g.
/ 1 second × 99.2% = 79.36 g / 1 second, so that the filling time by the timer 38 is 45 g４５
Set to 79.36 g / 1 sec ≒ 0.567 sec. By performing feedforward control in this manner, an accurate filling amount can be obtained.

In the above embodiment, the primary filling portion B
The weight of the empty container 2 is measured by providing a tare weight measuring section A on the upstream side of the container. However, since there is almost no variation in the weight of each container like a PET bottle, there is no need to measure the weight of the container 2. So in the case of such a container,
The installation of the tare weight measuring section A may be omitted. Also, the large-throw filling nozzles 16, 18, 20 of the primary filling section B
Are provided, but the number is not limited to three, and at least one small projection filling nozzle and at least one
It is only necessary to have a large throw filling nozzle. Moreover,
As in the above embodiment, three large throw filling nozzles 1
The flow rates per unit time of 6, 6, 18 and 20 do not need to be the same, and may be set differently. Also, the timer setting time does not need to be the same for all of the large throw filling nozzles 16, 18, and 20, and can be set as appropriate.

In the above embodiment, the primary filling section is provided with a small-throw filling nozzle with a small amount of filling liquid per unit time and a large-throw filling nozzle with a large amount per unit time. Filling is performed for the time set by the timer, and the filling time is controlled.When the small throw filling and the large throw filling are continuously performed as described above, the small throw and the large throw are used. Instead of providing a separate filling nozzle, a liquid valve of one filling nozzle is operated by a two-stage air cylinder so that the degree of opening can be switched between two stages. Patent No. 853
No. 240). Using such a two-stage switching type filling nozzle for the primary filling section, the filling time of the small throw filling step for filling at a small opening degree and the filling time of the large throw filling step for filling at a large opening degree are preset, While the wheel is stopped, the degree of opening of the liquid valve is switched, filling is performed for the time set by the timer, and feedback control is performed in the same manner as in the above-described embodiment according to the measurement result in the measuring unit. Alternatively, the small throw filling time and the large throw filling time may be changed.

[0043]

As described above, according to the filling method of the present invention, the primary filling section is provided with the small throw filling step and the large throw filling step of charging the filling liquid into the container according to the set time, In comparison with the set filling amount in the primary filling section and the filling amount measured in the measuring section, if the error amount is equal to or less than a predetermined amount, only the set time of the small throw filling step is increased or decreased to perform the primary filling. By adjusting the filling amount in the part, most of the primary filling amount can be filled at a high speed by the large throw filling process, and fine adjustment of the filling amount can be performed by the small throw filling process. . Therefore, accurate filling with high performance can be performed.

According to a second aspect of the present invention, in the primary filling section, a plurality of filling nozzles for supplying a filling liquid into a container in accordance with a set time are provided, and the plurality of filling nozzles are provided. Since it is composed of at least one small throw filling nozzle and at least one large throw filling nozzle,
Most of the primary filling amount can be filled at a high speed by the large throw filling nozzle, and fine adjustment of the filling amount can be performed by the small throw filling nozzle. Therefore, it is possible to obtain a filling device capable of high-precision and accurate filling.

Further, in the filling apparatus according to the third aspect, the primary filling section and the refilling section are each provided with a filling nozzle for supplying a filling liquid to the container in accordance with a set time, and Computing unit that compares the set filling amount in the primary filling unit with the filling amount measured by the measuring unit, and predicts the filling amount per unit time of the filling nozzle provided in the supplementary filling unit based on the comparison result. , Extremely high-precision filling can be performed.

[Brief description of the drawings]

FIG. 1 is a front view of a filling device according to an embodiment of the present invention.

FIG. 2 is a plan view of the filling device.

[Explanation of symbols]

 B Primary filling section C Measuring section (Primary filling weight measuring section) D Refilling filling section 2 Container 4 Transport means (star wheel) 14 Filling nozzle for small throw 16 Filling nozzle for large throw 18 Filling nozzle for large throw 20 Filling for large throw Nozzle 36 Control device 40 Operation unit

Claims (3)

[Claims] 1. A container filled with an amount of filling liquid less than a prescribed filling amount in a primary filling section, a measuring section measures the weight of the container filled with the liquid in the primary filling section, and a refilling section. Having a filling step of refilling the filling liquid to a prescribed filling amount in the container filled in the primary filling section, based on the filling amount measured in the measuring section, the filling amount to be refilled in the refilling section And a filling method in which the filling amount of the primary filling section is corrected. In the primary filling section, a small throw filling step and a large throw filling step of charging a filling liquid into a container according to a set time. Is established,
In comparison with the set filling amount in the primary filling section and the filling amount measured in the measuring section, if the error amount is equal to or less than a predetermined amount, only the set time of the small throw filling step is increased or decreased to perform the primary filling. A filling method characterized by adjusting a filling amount in a part. 2. A primary filling section for filling a container with an amount of filling liquid less than a prescribed filling amount, a measuring section for measuring the weight of the container filled with liquid in the primary filling section, and the primary filling section. A replenishment filling unit for replenishing the container filled with the filling liquid up to a prescribed filling amount, a conveying means for conveying the container and sequentially positioning the primary filling unit, the measuring unit and the replenishing filling unit, and the measuring unit Based on the measured filling amount, and set the filling amount to be replenished in the refilling unit, and a control device that corrects the filling amount of the primary filling unit, in the filling device, wherein the primary filling unit, A plurality of filling nozzles for supplying a filling liquid to a container according to the time set are provided, and the plurality of filling nozzles include at least one small-throw filling nozzle and at least one large-throw filling nozzle. The feature is that That filling device. 3. A primary filling section for filling a container with an amount of filling liquid less than a prescribed filling amount, a measuring section for measuring the weight of the container filled with liquid in the primary filling section, and the primary filling section. A replenishment filling unit for replenishing the container filled with the filling liquid up to a prescribed filling amount, a conveying means for conveying the container and sequentially positioning the primary filling unit, the measuring unit and the replenishing filling unit, and the measuring unit A filling device that sets a filling amount to be refilled in the refilling unit based on the measured filling amount, wherein the primary filling unit and the refilling unit each correspond to a set time. A filling nozzle for introducing a filling liquid into the container, and the control device compares the set filling amount in the primary filling section with the filling amount measured in the measuring section, and based on the comparison result, the replenishment is performed. Unit of the filling nozzle provided in the filling section Filling apparatus characterized by having an arithmetic unit for predicting the filling amount per time.