JPS6363055B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is a method for measuring grains such as rice and wheat, other granular materials, liquids, and viscous materials, and measuring them in predetermined amounts and packaging them in bags or sending them to other processes. The present invention relates to a device that enables continuous measurement without stopping the raw flow.

This type of continuous measuring device generally includes a flow divider in one supply path for two measuring mechanisms, and each measuring mechanism is provided with a detector for a predetermined measured amount, so that one of the measuring mechanisms is placed in the measuring state preferentially. When the detector is activated, the flow diverter is configured to switch to a posture suitable for the other metering mechanism so that the other metering mechanism is converted to a preferential metering state based on the detection result. In other words, since the two metering mechanisms alternately measure the amount, highly efficient continuous metering is performed without stopping the original flow.

In conventional devices, one detector for a predetermined measurement quantity is provided for each metering mechanism. That is,
Since there are two detectors, it is unavoidable that there will be tolerances between the two, such as a difference in zero point or a difference in gain. It is very difficult and troublesome to adjust the value to zero, and even if it is possible to adjust it once, it has the drawback that it is unavoidable that the difference will appear again and again.

Above all, two weighing mechanisms are used, and each weighing mechanism itself has a fairly complex structure, and the interaction between the weighing mechanisms is also complex, resulting in an overall increase in complexity, size, weight, and Another major drawback was that it led to an increase in costs.

It is also conceivable to provide three or more metering mechanisms for one supply route, and in that case it is easy to imagine that the problem will become even more serious.

The purpose of the present invention is to solve these drawbacks and problems.The present invention is intended to solve these drawbacks and problems. A flow path switching device is provided for cyclically supplying the measured amount to the plurality of measurement storage portions, and a single predetermined measured amount detector common to the plurality of measurement storage portions is provided, and the flow path switching device A control mechanism is provided to automatically shift the weight to the next operation in its cycle operation, and at the latest after the automatic transition, the flow of the object from the supply path to the next weighing storage section is controlled at a predetermined time. The gist is a continuous metering device that is equipped with a damming mechanism that stops for a while and restarts after a certain period of time has elapsed.

This invention is based on the following viewpoints.

Switching of the switching device based on the detection results of the detector,
The total amount is switched from 100% to 0% for the item that has been weighed, and from 0% to 100% for the item to be weighed next. In this case, in theory, it would be perfectly acceptable to have a plurality of weighing receptacles permanently placed on a balancer with a single detector. This will be explained with reference to FIGS. 5A and 5B. 1 is a balancing unit with a single detector 2; 3;
Reference numeral 3 denotes a metering storage unit placed on the balance unit 1, 4 a flow path switching device provided in the single supply path 5, 6, its actuator, and a a control mechanism. The detector 2 is subjected to zero point adjustment that neglects the weight of the balance section 1 and the empty storage sections 3, 3. At the moment when 100% of the predetermined measurement amount is stored in the left storage section 3, the switching tool 4 is moved to the left 100% by the action of the control mechanism a through the detector 2.
The state changes from 0% on the right to 0% on the left and 100% on the right, and the detector 2 now measures the right storage section 3. It takes time to replace the full left storage compartment 3 with an empty one or drain it to return to the empty state, and during this time, the detector 2
However, since not only the right storage section 3 but also the left storage section 3 is added, that factor will be removed sooner or later, so there is no problem with 100% weighing in the right storage section 3. There isn't. However, it is important to check whether the 100% storage in the left storage section 3 was performed normally.
This check absolutely requires a certain amount of time, such as 1 or 2 seconds, even if it is only a little. However, at this time, if not only the left storage section 3 to be checked but also the right storage section 3, which has just started the next weighing, are added to the balance section 1, accurate checking will fail. .

The above-mentioned configuration of the present invention deals with such breakdowns, and uses a damming mechanism to temporarily interrupt the flow of objects to be weighed for a predetermined period of time necessary for the check, and then performs the following steps. This is to temporarily prevent the weight of the object to be weighed that is being fed for weighing from being applied to the balancing section. Therefore, the check is performed accurately and well as expected, and it is effective for carrying out tasks such as feedback control (automatic correction) based on the check results, or recording and manually correcting it later. It can be dealt with. After the checking is completed, the temporary interruption is canceled and the next measurement is carried out as specified.

In this way, according to the present invention, by taking measures that do not impair the check function, it has become possible to use a single balancing section, including the detector, for multiple weighing storage sections. , thereby,
In addition to improving weighing accuracy, it also simplifies the entire device.
This made it possible to reduce the size, weight, and cost.

Embodiments of the present invention will be described below.

In the one shown in FIG. 5, the dam mechanism b added as shown in FIG. Actuator 10
has a group of elements added to the control mechanism a, and at the latest, for a predetermined time (the time required for checking, which is about 1 second or 10 seconds) from the moment the detector 2 operates, The gate 9 is then closed, and the gate 9 is opened immediately after the elapse of that time. 11 is a fixed chevron-shaped sorting tool.

That is, the operation is as follows.

The switching tool 4 is set to 100% on the left and 0% on the right as shown in Figure 2 A.
% distribution posture, it is assumed that 100% of the predetermined measured amount is stored in the left storage section 3. By the action of the control mechanism a through the detector 2, the switching tool 4 is set to 0% on the left.
When the distribution posture is changed to the right 100% distribution posture, the gate 9 is closed for the right. Figure 2 b.

While the gate 9 is closed, the storage capacity of the left storage section 3 is checked electrically, electronically, or visually. Figure 2 b.

Due to the time limit, the gate 9 opens to the right as shown in FIG. The gate 9 is closed to the left. Eventually, the predetermined measurement amount will be placed in the right storage section 3.
100% is stored and detector 2 is activated. During this time,
The checked left storage section 3 is returned to an empty state. When the detector 2 is activated, the control mechanism a converts the switching tool 4 into a position of 100% left and 0% right. Immediately after that, the right storage amount is checked while the gate 9 remains closed. Figure 2 d.

Due to the time limit, gate 9 opens to the left,
rotate to.

FIG. 3 and FIG. 4 show a case in which there are six storage sections 3.

The flow path switching tool 4 is mounted on a fixed plate 1 with 6 holes and 12 holes.
3 and a rotary disk 15 with one hole 14, and this switching tool 4 also serves as a damming mechanism b. In other words, temporary coughing during checking is
The hole 14 is stopped at the closed position between the holes 12, 12. This rotary type can be widely applied regardless of the number of storage sections 3. Of course, a two-unit system may also be applied.

[Brief explanation of drawings]

The drawings illustrate embodiments of the continuous measuring device according to the present invention, in which FIG. 1 is a schematic configuration diagram (side view), FIG. Fig. 4 is an end view taken in the direction of the - line arrow in Fig. 3; FIGS. 5A and 5B are operation diagrams of a comparative example. 2...detector, 3...storage section, 4...switching tool,
5... supply route, a... control mechanism, b... damming mechanism.

Claims (1)

[Claims] 1 A flow path switching device that cyclically supplies the entire amount of objects to be weighed flowing therethrough to a single continuous supply path 5 of objects to be weighed that is common to a plurality of weighing storage sections 3, 3 to each weighing storage section 3. 4, a single predetermined measurement amount detector 2 common to the plurality of measurement storage sections 3, 3, and a cycle operation of the flow path switching device 4 based on the detection result by this detector 2. A control mechanism a is provided to automatically shift to the next operation in , and at the latest after the automatic shift, the flow of the object to be weighed from the supply path 5 to the next weighing storage section 3 is controlled for a predetermined period of time. A continuous metering device equipped with a damming mechanism (b) that stops and restarts after a certain period of time has elapsed.