JPS62276416A - Method for supplying article in combination balance - Google Patents

Abstract

PURPOSE:To shorten the time necessary for supplying an article to a weighing hopper, by supplying the article to a receiving container during a time of weigh ing, operation and discharge are performed and supplying the same to a weigh ing tank when weighing, operation and discharge are finished. CONSTITUTION:During a period when a combination balance performs weighing, operation and discharge, a container-shaped gate part 32 takes a first position. An electromagnetic feeder 20 is driven from the proper period during the period when weighing, operation and discharge are performed to send out an article from a send-out end side. Said article is received by the gate part 32 and is not supplied to a weighing hopper 22. If the weighing hopper 22 is empty when weighing, operation and discharge are finished, that is, when supply is started, the gate part 32 takes a second position and the article is supplied to the weigh ing hopper 22. At the same time, the article is supplied to the weighing hopper 22 by the electromagnetic feeder 20.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention <Industrial Application Field> This invention provides a method for supplying articles to be weighed to each of a plurality of weighing instruments, and variously combining weighing signals from these weighing vessels. Select a combination whose total weight is equal to or close to a predetermined weight from among these combinations, discharge the articles from the measuring tanks that constitute the selected combination, and supply the articles to the empty measuring tank. , relates to a supply method for supplying articles to each weighing tank in a combination weigher that repeats recombination.

<Prior art> Conventionally, as the above-mentioned supply method, as shown in Fig. 3,
After the weighing of the articles in the weighing hopper 8 begins with the load detector 10 provided in the weighing water horn 8, the weighing ends, and after a period of time during which a combination calculation is performed to select a combination, the selected one is Until the discharge of the articles from the weighing hopper 8 containing the articles to the collecting chute 12 is completed, each electromagnetic feeder 4 is driven to supply the articles on the electromagnetic feeder 4 to the supply hopper 6, When the weighing hopper 8 is empty,
Articles are supplied from the supply hopper 6 to the weighing hopper 8 (see Figure 1 of Japanese Utility Model Application No. 5'i'-151327).

Note that each electromagnetic feeder 4 is supplied with articles from the distributed feeder 2 at will.In addition, as shown in FIG. 4, the supply pumper 6 shown in FIG. A supply method in which a plate 14 is provided to be openable and closable, and when the weighing hopper 8 is empty, the gate plate 14 is opened by a drive device 16 and the electromagnetic feeder 4 is driven to supply the articles on the electromagnetic feeder 4 to the weighing hopper 8. There was also (Utility Model Publication No. 57-151327 No. 6
(see figure).

<Problems to be Solved by the Invention> However, according to the former feeding method, when the target value of the total weight of a plurality of articles to be obtained by the combination weigher is relatively large, the articles to be supplied to each weighing hopper are The weight of the article is also inevitably heavy, and therefore the weight of the articles that must be fed to the supply hopper 6 also increases. In such a case, if the supply amount from the electromagnetic feeder 4 is constant, the supply hopper 6
The electromagnetic feeder 4 takes a long time to feed the feeder, and even though the weighing hopper 8 is already empty, the feed to the feed hopper 6 has not yet been completed, and even after the feed to the feed hopper 8 has been completed. Since the supply hopper 8 is opened to supply the goods to the weighing hopper 6, the time required to supply the goods to the weighing hopper may end up being longer.

Similarly, even in the latter case, when the weight of the article to be fed to the weighing hopper 8 is large and the amount of feed from the electromagnetic feeder 4 is constant, the time required to feed the article to the weighing hopper 8 is still long.

In general, in combination scales, the time required for weighing, the time required for combination calculation, and the time required for discharging are all approximately constant. Since the number of times articles can be discharged from the scale is reduced, there is a problem in that processing capacity is reduced.

An object of the present invention is to provide a supply method that can supply a large amount of articles to a weighing hopper in a short time and shorten the supply time.

Means for Solving the Problems> In order to solve the above problems, the present invention provides a means for solving the above-mentioned problems while the combination weigher is performing weighing, calculation, and discharging. The step of blocking the article delivery route between the tank and the receiving container and receiving the article transported from the article conveying device in the receiving container, and when the above-mentioned weighing, calculation and discharge are completed, the article in the receiving container is The method includes the steps of supplying the article to the measuring tank, releasing the blocking of the article delivery path by the receiving container, and supplying the article from the article conveying device to the measuring tank via the article delivery path.

Effects and Effects> According to the present invention, an article is supplied to the receiving container while weighing, calculating, and discharging are being performed, and when the weighing, calculating, and discharging are completed, the article in the receiving container and the article transport are The articles from the device are also fed into the metering tank. Therefore, in the former of the conventional supply methods mentioned above, measuring, calculation,
It is necessary to supply the article to the supply hopper during the discharge and after the discharge is finished, and a time t2 to supply the article to the weighing hopper after the supply is completed, but in this invention, , since the goods in the receiving container and the goods from the goods conveyance device are supplied together, the supply time (4\L above)
7'ct...! : shorter than the combined time of t12. In addition, in the latter of the conventional feeding methods described above, the electromagnetic feeder feeds the hopper to the weighing hopper after the measurement, calculation, and discharge are completed, whereas in this invention, the measurement, calculation, and discharge are completed. The goods are supplied to the receiving container during the weighing, calculating, and discharging process, and are then supplied to one weighing hopper after the weighing, calculating, and discharging processes are completed. It is possible to shorten the time required for supplying articles to the weighing hopper by activating the article conveying device according to the amount of the article stored in the weighing hopper. The time can be shortened and the throughput per unit time of the combination weigher can be improved.

Embodiment A device used in an embodiment of this feeding method has an electromagnetic feeder 20, as shown in FIG. Although not shown in the figure, the electromagnetic feeders 20 are arranged radially around the distributed feeder like the electromagnetic feeder 4 shown in FIG.

Weighing hoppers 22 are arranged below the delivery side of these electromagnetic feeders 20 at intervals.

These weighing hoppers 22 each have an input port 24 at the top and a discharge port 26 at the bottom, and the discharge port 26 is provided with a discharge gate 28 to open and close it.

This is a 30-Harro load cell for weighing the articles in the weighing hopper 22. In this way, by arranging the weighing hoppers 22 at intervals below the delivery side of the electromagnetic feeder 20, articles fall from the delivery side of the electromagnetic feeder 2o and are accommodated in the weighing hopper 22.

That is, an article delivery path is formed between the electromagnetic feeder 2o and the weighing hopper 22.

A container-shaped dart portion 32 is provided between the delivery side of the electromagnetic feeder 20 and the weighing hopper 22. This gate portion 32 is formed into a container shape with an open upper end surface and a front end surface, and is rotatably supported by a shaft 34 provided at the upper end of the rear end surface. This shaft 34 is connected to a drive unit 36 and rotates as shown by the arrow between the first position shown in FIG. 1 and the second position shown in phantom lines in the same figure. .

In the first position, the container-shaped gate part 32 blocks the article delivery path between the electromagnetic feeder 20 and the weighing hopper 22, and the container-shaped gate part 32 receives the articles from the electromagnetic feeder 20. At this time, in order to prevent the articles from falling into the weighing hopper 22 from the open front end of the container-shaped gate part 32, the front end of the container-shaped gate part 32 is opened from the lower end of the delivery side of the electromagnetic feeder 20. A closing plate 38 extends obliquely downward so as to substantially close the opening. Also, in the second position, the container-shaped gate portion 32. However, the electromagnetic feeder 20 and weighing hopper 2
In other words, the article can be directly supplied from the electromagnetic feeder 20 to the weighing hopper 22, and the article in the container-shaped gate part 32 can be removed from the open front end surface. It is supplied to the weighing hopper 22. When an article is supplied into the weighing hopper 22 from the electromagnetic feeder 20 and the container-shaped gate section 32 with the container-shaped gate section 32 in the second position, the weighing hopper 22
In order to prevent articles from jumping out, a weighing hopper 22 is installed.
A deviation prevention plate 40 is provided so as to extend from the input port 24 to the third blockage plate.

Next, the method of this embodiment will be explained with reference to FIGS. 1 and 2. As shown in FIG. 2(C), while the combination scale is performing weighing, calculation, and discharging, the container-shaped gate portion 32 is in the first position as shown in FIG. 2(b). . Then, as shown in Fig. 2(a), weighing,
At an appropriate time during the period during which calculations and emissions are being performed (see the same figure)
In al, the electromagnetic feeder 20 is driven from the latter half of the weighing process, and the articles are sent out from the delivery end side. This sent out article is received by the container-shaped gate part 32 and weighed into the weighing hopper 22.
is not supplied. Then, when the measurement, calculation, and discharge are completed, that is, when the supply starts, the weighing hopper 2
2 is empty, the container-shaped gate part 32 assumes the second position. As a result, the articles in the container-shaped gate section 32 are supplied to the weighing hopper 22, and at the same time, since the electromagnetic feeder 20 is continuously driven, the articles are supplied to the weighing hopper 22. That is, the electromagnetic feeder 20 and the container-shaped gate section 32 feed articles to the weighing hopper 22 . Therefore, the electromagnetic feeder 20 feeds articles of a predetermined weight to the weighing hopper 2.
2, the time required for operation after completion of metering, calculation, and discharge is short.

In the above embodiment, the electromagnetic feeder 20 is used, but a belt conveyor may be used instead. Further, although both the blocking plate 3 and the deviation prevention plate 40 are provided, either one may be removed. Although the front end surface of the container-shaped gate portion 32 is opened, it is not necessarily necessary to open the front end surface.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view showing the main parts of the device used in one embodiment of the article feeding method in a combination weigher according to the present invention, and FIG.
The figure is a timing chart showing the operation of the same embodiment, FIG. 3 is a partially broken pressure surface view of an example of a device used in the article feeding method in a conventional combination weigher, and FIG. FIG. 7 is a partially enlarged sectional view of another example of the device. 20... Article supply device, 22... Weighing hopper, 32
... Container-shaped gate part (receiving container). Patent applicant Yamato Seiko Co., Ltd. Agent Satoshi Shimizu and 2 others
Rei Taku. 3rd figure 4th figure

Claims (1)

[Claims] (1) While the combination scale is performing weighing, calculation, and discharging, the article delivery path between the article conveyance device and the weighing tank provided below it is blocked by a receiving container, and the article is removed from the article conveyance device. When the step of receiving the transported article in the receiving container and the measurement, calculation, and discharge are completed, the article in the receiving container is supplied to the measuring tank, and the article sending path is interrupted by the receiving container. and supplying the article from the article conveyance device to the weighing tank via the article delivery path.