JPH02269694A - Filling apparatus - Google Patents

Abstract

PURPOSE:To permit a rapid and precise control of the liquid level of the contents of a container by effecting such a control as to make the liquid surface height of the filled contents constant independently of the container volume. CONSTITUTION:The containers 2 to be filled with the contents 1 are placed and weighed successively on a container weighting part 3. The weight data outputted from this weighing part 3 is compared at a computing part 5 with the weight data stored in a memory part 4 for storing a correlation between the weight and volume of a container, whereby the volume of the container commensurate with the weight is computed. On the other hand, the contents 1 are supplied from a filling part 6 and the starting and stopping of the filling and the filling speed are regulated by a control part 7. This control part 7 controls the filling part 6 based on the volume data from computing part 5, i.e. the filling part 6 is regulated so as to increase the filling amount when the container volume is large and decrease the filling amount when the container volume is small. This method can increase the reliability by consumers of the content volume of an article.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a filling device used for cosmetics, foods, and medical products, and in particular, the present invention relates to a filling device used for cosmetics, foods, and medical products. Concerning things that can be precisely controlled.

[Conventional technology]

Conventionally, for example, a filling device for filling cosmetics has been used to fill a certain amount of contents.1. The eyes are placed so that extremely accurate quantitative filling can be performed.

[Problem to be solved by the invention]

By the way, when looking at containers filled with cosmetics, there are slight variations in the capacity that occur during the manufacturing stage.

Therefore, when a certain amount of contents is filled into containers with such variations, it is inevitable that the liquid level will vary depending on the container. In particular, since this type of container is generally bottle-shaped, its cross-sectional area decreases as it reaches the top, and a slight difference in capacity is amplified as a difference in liquid level. It becomes visible.

This variation in liquid level depending on the container even though the product is filled with the same amount causes consumers to lose confidence in the product.

Therefore, it is desirable to equalize the liquid level rather than making the filling amount uniform.

Therefore, when performing such liquid level management, an optical sensor is generally used, placed at the opposite pole of the container, detects the liquid level by changes in passing light, and controls the filling amount based on this data. I can think of something.

However, cosmetic containers have a matte surface treatment,
In some cases, the container is made of a dark-colored material, making it difficult to accurately detect the liquid level.

In addition, even if you simply try to stop filling when a predetermined liquid level is reached, filling cannot be stopped immediately due to the inertia of the contents and other mechanical conditions of the filling machine, so the filling speed is gradually controlled. In addition, an auxiliary sensor must be provided to switch to low-speed filling in areas where the liquid level is below a predetermined level. There is a problem in that these conditions complicate the control details and make it impossible to increase the filling speed.

The present invention has been made in view of the above-mentioned problems, and the technical problem is to provide a filling device that can quickly and accurately manage the liquid level of the filled material, regardless of the optical characteristics of the container. shall be.

[Means to solve the problem]

In order to solve the above technical problem, the present invention has the following configuration.

That is, a container weight measuring section 3 that measures the weight of the container 2 to be filled with the contents 1, and a storage section 4 that stores the correlation between the container weight and the container capacity.
a calculation unit 5 which calculates the weight of the container by associating the weight data from the container weight measuring unit 3 with the weight data in the storage unit 4; and a filling unit 6 based on the capacity data from the calculation unit 5. A control unit 7 for controlling the filling capacity of the container 2 is provided, and the filling device is configured to control the liquid level of the filled contents 1 to be constant regardless of the capacity of the container 2.

[Effect]

Based on the correlation between container weight and container capacity, the filling unit is controlled to increase the filling amount when the container capacity is large, and to decrease the filling amount when the container capacity is small, based on the correlation between the container weight and the container capacity. .

Therefore, the liquid level remains constant regardless of the capacity of the container 2. Therefore, when this product is displayed, the liquid level is uniform, and consumer confidence in the content of the product can be increased. I will explain.

FIG. 1 shows a diagram corresponding to claims, in which a container 2 to be filled with contents 1 is placed on a container weight measuring section 3, and its weight is continuously measured.

The weight data outputted from the container weight measurement section 3 is matched with the weight data stored in the storage section 4 in which the correlation between the container weight and the container capacity is stored in the calculation section 5, and the capacity of the container commensurate with the weight is calculated. .

On the other hand, the contents 1 are supplied from the filling section 6, and the start and stop of filling and the filling speed are controlled by the control section 7. The control section 7 controls the filling section 6 based on the capacity data from the calculation section 5. The storage section 4 stores sequences and constants for calculating the following data, and the calculation section 5 performs calculations based on these.

FIG. 2 shows a side view of the entire device, and to explain the outline, this device is roughly divided into a cosmetic supply section 30 and a filling section 31.
The cosmetic supply section 30 is divided into a cosmetic tank 3 and a cosmetic tank 3.
2 and a supply pump 33 connected thereto,
A hose 35 is connected to this supply pump 33. Further, the entire chassis is movable using casters 34 provided at the bottom of the chassis.

On the other hand, in the filling section 31, a first measuring device 37 for measuring the weight of the container and a second measuring device 38 for measuring the total weight after filling are provided on a base 36, and the container 2 is rotated by a rotating machine 39. It is supposed to be done. The container 2 is then suctioned by a suction device 40 and held in a predetermined position. A nozzle elevating table 41 is provided on the upper surface of the base 36, and a filling nozzle 42 is provided on this nozzle elevating table 41 so as to be movable up and down. A hose 35 is connected to this filling nozzle 42 to supply cosmetics. This filling nozzle 42 is provided with a pulse count type discharge amount sensor, and the discharge amount is outputted to the outside as the number of pulses from this sensor.

The supply pump 33, the first measuring device 37, and the second measuring device 38
, the rotating machine 39, and the nozzle elevating table 41 are connected to a program sequence controller 43, and are operated in a coordinated manner by transmitting and receiving signals in a predetermined sequence.

The data to be calculated is the container weight upper limit (WIH)
, container weight standard value (WR), container weight lower limit value (WIL)
, a filling amount (RV3), a constant related to the container (A), a constant related to the container (B), a constant related to the container (C), a specific gravity of the container material (D), and a weight-discharge rate conversion coefficient (E).

An example of operation will be explained below.

First, in step 50, measure the weight of the empty container and write the value to Wl.
shall be. Then, in step 51, the value is compared with the preset lower limit value 11L and upper limit value WH, and containers not falling within this range are excluded in step 52.

Subsequently, in step 53, a deviation value from the standard weight is calculated based on the actual measurement value, and in step 54, the deviation value is converted into a discharge amount. Then, in step 55, the corrected discharge amount is determined, and in step 56, the count of pulses input from the filling nozzle is initialized.

Subsequently, filling is started in step 57, and it is determined in step 58 whether or not the filling amount calculated in step 55 has been reached, and when the desired filling amount has been reached, the process moves to step 59 and filling is stopped.

In the next step 60, the weight after the filling is completed is measured, and the measured value is set as W2, and the filling amount is calculated in step 61. In step 62, the lower limit value of the total weight is calculated from the already measured values based on the correlation between the container weight and the content. Similarly step 6
Step 3 calculates the upper limit of the total weight. The thus calculated content and actual content are calculated in step 64, and those whose filling volume does not reach the standard are excluded in step 65, and normal crystals within the standard are transferred to the next process in step 66.

Therefore, the net filling amount will never be less than the displayed filling amount.

In this way, the liquid level of the filled contents 1 is controlled to be constant regardless of the capacity of the container 2.

FIG. 4 shows an example of control of the supply pump 33 and the nozzle lifting table 41. At the start of filling, the nozzle lifting table 41 is raised from the lowest position (Vl) to the first position (LV2) while the first filling amount ( FVI), and similarly fill to the third position (
Filling is performed in stages as shown in the figure until reaching LV4).

In this case, since the control is based on pre-calculated data, there is no need to abruptly stop the filling, and the filling speed can be gradually controlled based on the sequence to reach the target value.

Therefore, it becomes easy to increase the filling speed.

The filling nozzle 42 is similar to the one described in Japanese Unexamined Patent Publication No. 57-153802, in which a frame column having the same outer diameter as the inner diameter of the tip of the nozzle is vertically movable inside a tapered pipe-shaped nozzle. When filling, the frame post is placed in the raised position to release the vibrator-like nozzle, and when filling is to be stopped, the frame post is inserted into the tip of the nozzle to quickly stop filling.

〔Effect of the invention〕

According to the present invention, based on the correlation between container weight and container capacity, when the container capacity is large, the filling amount can be increased, and when the container capacity is small, the filling amount can be decreased, so that the liquid level can be increased. is constant regardless of the capacity of the container 2. Therefore, when the product is displayed, the liquid level is the same, which increases consumer confidence in the product.

[Brief explanation of drawings]

1 to 4 show embodiments of the present invention, FIG. 1 is a diagram corresponding to claims, FIG. 2 is a side view of the device, FIG. 3 is a flowchart, and FIG. 4 is an example of control contents. figure. ■...Contents, 2...Container, 3...Container weight measuring section, 4...Storage section, 5...Calculation section, 6...
Filling section, 7... control section. Figure 1 Figure 3

Claims (1)

[Claims] (1) A container weight measuring section 3 that measures the weight of the container 2 to be filled with the contents 1, a storage section 4 that stores the correlation between the container weight and the container capacity, and the container weight measuring section 3. a calculation unit 5 that calculates the capacity of the container by associating the weight data with the weight data in the storage unit 4; and a control unit 7 that controls the filling capacity in the filling unit 6 based on the capacity data from the calculation unit 5. A filling device characterized in that the liquid level of the filled contents 1 is controlled to be constant regardless of the capacity of the container 2.