JP3411596B2 - High viscosity liquid filling equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-viscosity liquid filling apparatus for filling a high-viscosity liquid such as an adhesive or a sealing material into a plurality of measuring cans. . 2. Description of the Related Art Conventionally, an adhesive or a sealing material (viscosity of 10,000 to 40000 cp) produced in a factory or the like is filled in, for example, a 4 liter fixed quantity can and shipped as a product. In this filling work, a method of taking out and filling the adhesive or sealing material contained in a large-capacity mixing / stirring container etc. using a pump for each fixed quantity can, and a method for preparing a plurality of fixed viscosity liquids pumped by the pump. There is a method of dispensing into cans. In the latter case, a filling valve is provided for each filling channel to each fixed quantity can, and a filling valve is opened for each fixed quantity can to perform a filling operation continuously. However, in the case of filling the fixed quantity cans one by one as in the former case, the operation is intermittent, and the production efficiency is extremely poor. On the other hand, in the latter case, although it is possible to continuously fill a plurality of fixed quantity cans, it is not possible to fill each fixed quantity can at the same time. No improvement could be expected. In addition, when filling at the same time, the filling amount of each fixed quantity can is likely to vary, and it is difficult to realize it because of the drawback that the filling accuracy is lowered. [0004] The present invention has been made in view of the above problems, and an object of the present invention is to provide a high-viscosity liquid filling apparatus capable of simultaneously filling a plurality of quantitative containers without lowering the filling accuracy. Is to provide. In order to achieve the above object, according to the present invention, a high-viscosity liquid filling apparatus according to the first aspect of the present invention is a filling method in which a high-viscosity liquid is pumped by a pump and distributed to a plurality of fixed quantity containers. and the flow path provided for each branch of each quantity container of the filling channel, a filling amount detecting means for continuously detecting the amount of high viscosity fluid flowing quantitative vessel, provided for each quantity container a fill valve for closing the filling flow path to quantity container when a high viscosity liquid flowing into quantitative vessel respectively reached the predetermined target filling amount, until the fill valve is completely closed after reaching the target filling amount It is possible to adjust the amount of head that flows into each quantitative container, and measure the total inflow amount of the high-viscosity liquid including the head amount at each filling, and based on the data, the total inflow amount of each quantitative container successful for correcting each time the filling of the drop amount to approach quantitative Difference amount correcting means , provided in the branch path of the filling flow path.
In addition, a flow control valve is provided for generating a flow difference between the branch paths to the respective quantitative containers so that the magnitude relationship between the flow rates between the quantitative containers is always constant. According to the high viscosity liquid filling apparatus of the first aspect, by opening each filling valve and driving the pump, the high viscosity liquid flows into each quantitative container at the same time and enters into each quantitative container. The amount of the high-viscosity liquid flowing in is continuously detected by each filling amount detecting means. Next, when the detection value of each filling amount detecting means reaches a predetermined target filling amount, the filling valve of the quantitative container is closed, and the filling is completed. At this time, the total inflow amount of the high-viscosity liquid flowing into each quantitative container is measured at each filling, and based on the data, the target filling amount is set so that the total inflow amount of the high-viscosity liquid approaches the quantitative amount of the quantitative container. Is reached and before the filling valve is completely closed, the head amount flowing in is corrected for each filling. In addition, since the magnitude relationship between the flow rates of the respective quantitative containers is constant due to the flow rate difference generated by the flow control valve, the order in which the filling amounts of the respective quantitative containers reach the target filling amounts is always constant. Thus, the variation in data for correcting the head amount is reduced. 1 to 3 show one embodiment of the present invention, and FIG. 1 shows a schematic configuration diagram of a high-viscosity liquid filling apparatus. In FIG. 1, reference numeral 1 denotes a container containing a high-viscosity liquid K such as an adhesive or a sealing material, into which a pressing plate 2 for taking out a high-viscosity liquid is inserted. A pump 3 is attached to the pressing plate 2, and the high viscosity liquid K in the container 1 can be taken out by rotating the pump 3 by a motor 4. It should be noted that a device for removing a high-viscosity liquid having the above configuration has already been proposed by the present applicant (Japanese Utility Model Application No.
-27585). Reference numeral 5 denotes a filling flow path connected to the pump 3, the end of which is branched into two systems, and each branch end has a total of two measuring cans Y.
1, Y2. Reference numerals 6 and 7 denote first and second filling valves provided for each of the metering cans Y1 and Y2, which are respectively attached to the branch ends of the filling flow path 5. Each of the filling valves 6 and 7 is operated by an electric opening / closing mechanism so that an arbitrary opening degree and an arbitrary throttle speed can be obtained. Reference numerals 8 and 9 denote first and second filling amount detectors provided for each of the metering cans Y1 and Y2, each of which comprises a weight measuring device such as a load cell. Each of the filling amount detectors 8 and 9 is connected to first and second setting units 10 and 11 having a microcomputer configuration, respectively. The detection values of the filling amount detectors 8 and 9 in the setting units 10 and 11 are shown below. When the set value is reached, a predetermined signal is output. That is, a signal when the high-viscosity liquid A flowing into each of the metering cans Y1 and Y2 reaches a predetermined first fixed amount (for example, 80% of the fixed amount) and a signal before the predetermined second fixed amount (for example, 95% of the fixed amount) ), And a predetermined target filling amount (closing timing of each filling valve 6, 7)
And a signal when the signal reaches. Incidentally, the final total inflow amount of the high-viscosity liquid A flowing into each of the fixed quantity cans Y1, Y2 is slightly larger than the inflow amount at the time when the closing command is sent to each of the filling valves 6, 7. That is, since the filling valves 6 and 7 do not close instantaneously, each metering can Y
The high-viscosity liquid A flows into each of the fixed quantity cans Y1 and Y2 even after the filling amount of Y1 and Y2 reaches the target filling amount and before each of the filling valves 6 and 7 is completely closed. This is called a head drop. Therefore, each of the setting devices 10 and 11 includes means for correcting the head amount each time so that the total inflow amount including the head amount approaches the fixed amount of each of the fixed quantity cans Y1 and Y2. Therefore, each fixed quantity can Y1, Y
2 is measured every time the filling is completed, and the next drop is determined from the average value so that the difference between the previous total inflow and the fixed amount of the container becomes zero. Reference numerals 12 and 13 denote first and second flow control valves provided in each branch of the filling flow path 5, respectively, so that an arbitrary opening degree can be obtained by a manual opening / closing mechanism.
Further, the flow rate of the first flow control valve 12 is equal to the second flow control valve 13.
Is set slightly larger than the flow rate of
The magnitude relationship of the flow rate between the filling flow paths 5 is constant. This is because the order to close the respective filling valve 6, 7 is the not constant for each at each filling, the inflow conditions in each quantitative cans Y1, Y2 is variation in the data is greater changes. Reference numeral 14 denotes a central control unit having a microcomputer structure, which is connected to each of the filling valves 6, 7 and each of the setting units 10, 11. The motor 4 of the pump 3 is connected to the central control unit 14 via an inverter controller 15.
The opening / closing operation of the filling valves 6 and 7 and the rotation speed of the motor 4 are controlled in accordance with a program described later. The operation of the central control unit 14 will now be described with reference to the flowchart shown in FIG. 2 and the graph shown in FIG. In the same figure, A1 and A2 are each fixed quantity can Y1,
Before the first quantification set for Y2, B1, B
2 is a second pre-quantification set for each of the fixed quantity cans Y1 and Y2, C1 and C2 are target filling amounts respectively set for the fixed quantity cans Y1 and Y2, and W1 and W2 are filling quantity detectors. 8 and 9 show detected values. First, the first and second filling valves 6, 7 are fully opened (S1, S2), and the motor 4 of the pump 3 is driven at a high speed (S3). Thereby, the high-viscosity liquid K simultaneously flows into each of the fixed quantity cans Y1 and Y2 at a large flow rate. Next, when one of the detection values W1 and W2 of the filling amount detectors 8 and 9 reaches the first pre-quantification amounts A1 and A2 (S4 and S5), the rotation speed of the motor 4 is switched to low rotation (S4). S6) The flow rate of the high viscosity liquid K into each of the fixed quantity cans Y1 and Y2 is reduced to a small flow rate. In this case, as described above, since the flow rate of the first flow rate control valve 12 is set to be larger than the flow rate of the second flow rate control valve 13, the detected value W1 of the first fixed quantity can Y1 is always faster than the first fixed quantity canister Y1. Reach A1 before. Then, the subsequent programs operate by multitasking, and each fixed quantity can Y1, Y2
Are performed in parallel. That is, the first fixed quantity can Y1
On the side, when the detection value W1 reaches the second pre-quantification B1 (S7), the first filling valve 6 is half-opened (S8). When the detected value W1 reaches the target filling amount C1 (S9),
The first filling valve 6 is fully closed (S10), and the first metering can Y1
Is completed. At this time, the head amount is corrected by the first setting device 10 each time, and the error between the fixed amount of the first fixed amount can Y1 and the total filling amount is eliminated. Further, the operation (steps S11 to S14) on the second fixed quantity can Y2 side is the same as the above steps S7 to S10, and therefore the description is omitted. As described above, according to the high-viscosity liquid filling apparatus of this embodiment, both the first and second filling valves 6 and 7 are opened and the high-viscosity liquid K is supplied to the first and second metering cans Y1 and Y2. At the same time, the amount of drop determined by the throttle speed of each filling valve 6, 7 is corrected each time by the first and second setting devices 10, 11, and further, the order of closing each filling valve 6, 7 is changed to the first order.
And the second flow rate regulating valves 12 and 13 are used to make the data constant for each filling and to reduce the variation in data for compensating the amount of head drop. Y2 can be filled at the same time, and the production efficiency can be improved. In the above embodiment, the two fixed quantity cans Y1, Y
Although the example of filling into 2 was shown, it is not limited to 2 and simultaneous filling into a plurality of fixed quantity cans is also possible. In the above embodiment, the second
Although B1 and B2 before quantification are set and the rotation speed of the pump 3 is switched to a total of two stages of high rotation and low rotation, the pump 3 is driven at a constant rotation speed. Is also good. As described above, according to the high-viscosity liquid filling apparatus of the present invention, it is possible to simultaneously fill a plurality of quantitative containers without lowering the filling accuracy, thereby improving productivity. Can be significantly improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic configuration diagram of a high-viscosity liquid filling apparatus showing one embodiment of the present invention. FIG. 2 is a flowchart showing the operation of a central control unit. FIG. Graphs [Description of References] 3 ... Pump, 5 ... Filling channel, 6 ... First filling valve, 7 ... Second
Filling valve, 8: first pre-quantification detector, 9: second pre-quantification detector, 10: first setting device, 11: second setting device, 12: first
Flow control valve, 13: second flow control valve, 14: central control unit, K: high viscosity liquid, Y1: first metering container, Y2: second metering container.

Claims (1)

(57) [Claims 1] A filling flow path for pumping a high-viscosity liquid by a pump and distributing the liquid to a plurality of quantitative containers, and a filling flow path provided for each branch path to each quantitative container , a filling amount detecting means for continuously detecting the amount of high viscosity fluid flowing quantitative vessel, provided for each quantity container, high viscosity fluid flowing quantitative vessel respectively reached the predetermined target filling amount When filling valve to close the filling flow path to the quantitative container, it is possible to adjust the head amount flowing into each quantitative container until the filling valve is completely closed after reaching the target filling amount,
The total inflow of the high-viscosity solution containing drop amount was measured every time of each filling, the total inflow based on the data for correcting the difference amount so as to approach the determination of the quantity container every time the filling head drop and quantity correcting means, provided in the branch of the filling flow path, minute each quantity container so that the flow rate magnitude relationship to between the quantity container is always constant
High viscosity liquid filling apparatus being characterized in that a flow control valve to cause the flow rate difference between Toki path.