JPS60161530A - Combination balance - Google Patents

Abstract

PURPOSE:To simplify a structure while enhancing treatment capacity, by arranging two gathering chutes, each of which has a semi-circular upper edge opening part and a discharge port provided to the lower end part thereof, in close vicinity to each other and arranging a plurality of weighing machines and supply hoppers along the edge parts of said chutes. CONSTITUTION:Now, articles to be weighed are charged in weighing machines 10, 20 and supply hoppers 14, 24 and, in such a state that articles to be weighed are supplied on straight advance feeders 18, 28, when an operation control part selects the suitable combination of the weighing machines 10 and the discharge gates 12 are opened, the articles to be weighed are discharged to gathering chutes 2. The discharge gate 16 of the supply hopper 14 positioned above the empty weighing machine 10 is opened and the articles to be weighed are supplied to the empty weighing machine 10 while the straight advance feeder 18 above the empty supply hopper 14 is vibrated to supply the articles to be weighed in said hopper 14. The articles to be weighed are, in turn, supplied to the straight advance feeder 18 from a dispersing feeder 30.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combination weigher, and more particularly to the arrangement of a weighing machine and a collection chute.

Conventionally, combination scales have a combination scale in which the inner and outer chutes intersect, the supply ports of the inner and outer chutes are arranged concentrically, and the discharge ports are arranged in parallel to form 144 independent two-system discharge paths at the top of the collecting chute. Some weighing machines are equipped with discharge gates that open on both sides so that articles to be weighed can be discharged from both the inner chute and the outer chute. In such a combination scale, since the inner and outer chutes intersect, the structure of the collection chute is complicated, which not only makes manufacturing troublesome but also increases the price. In addition, because the intersection of the inner and outer chutes has a narrow, curved, and other complicated shape, the objects to be weighed may get stuck in the middle, and the falling distance of the objects may be different between the inner and outer chutes. There was a problem that the arrival time to the discharge port was different. Furthermore, the weighing machine must have a discharge gate that can be opened on both sides, making the structure complicated, not only cumbersome to manufacture, but also expensive. In addition, when items to be weighed are discharged to the inner chute, they can only be discharged alternately, such as to the outer chute, and it is not possible to increase processing capacity by discharging weighed articles to both the inner and outer chutes at the same time. . Furthermore, it was not possible to make the number of times of discharge into the inner chute different from the number of times of discharge into the outer chute.

An object of the present invention is to provide a combination weigher that solves each of the above problems.

Therefore, the present invention provides a first collecting chute, a second collecting chute arranged close to the first collecting chute, and a second collecting chute arranged along the edge of the first collecting chute. a first storage tank group including a plurality of weighing machines disposed along the edge of the second collecting chute;
a first supply device that supplies the article to be weighed to each weighing machine in the storage tank group; a second supply device that supplies the article to be weighed to each weighing machine in the second storage tank group; This configuration includes a third supply device that supplies the article to be measured to the second supply device.

In the combination weigher configured in this way, the first and second collecting chutes are formed completely separately, so the structure of both collecting chutes is simplified, and not only is manufacturing easier, but the price is also lower. . In addition, since there is no intersection between the first and second collecting chutes, the objects to be weighed will not get clogged midway.The falling distance of the objects to be weighed will be the same in the first and second collecting chutes, and the objects will be ejected. The time it takes to reach the exit is also the same. In addition, the weighing machines of the first storage tank group only need to discharge the articles to be weighed into the first collection chute, and the weighing machines of the second storage tank group only need to discharge the articles to be weighed into the second collection chute, so each weighing machine Since it has one discharge gate, it is possible not only to perform alternate discharge or simultaneous discharge as necessary, but also to set the number of discharges to the first collecting chute and the number of discharges to the second collecting chute different. You can also

Hereinafter, the present invention will be explained in detail based on two illustrated embodiments. A first embodiment is shown in FIGS. 1 and 2. In FIG. 1, reference numeral 2 denotes a collecting chute, and as shown in FIG. 2, the opening at the upper edge is semicircular and has a discharge port 4 at the lower end. 6 is also a collecting chute, which has a semicircular upper opening and a discharge port 8 at its lower end. Both collecting chutes 2.6 are arranged so that the straight edges of the upper edge openings are close to each other and positioned parallel to each other, as shown in FIG. Although not shown in the figure, packaging machines are arranged below the discharge ports 4.8.

Eight weighing machines 10 are arranged at approximately equal intervals in the arc-shaped portion of the upper edge opening of the collection chute 2. Each of these weighing machines 10 has a discharge gate 12 only on one side. 13 is a load detector attached to each weighing machine lo.

Above each of these weighing machines 10 is a supply hopper 1.
4 is placed. These supply hoppers 14 also have a discharge gate 16 on only one side. Each supply hopper 1
A linear feeder 18 is disposed above each of the collecting chutes 2 so as to face toward the center of the straight edge of the upper opening of the collecting chute 2.

Similar to the weighing machine 10, eight weighing machines 20 are arranged above the collecting chute 6. 22 is a discharge gate, and 23 is a load detector.

Above each of these weighing machines 20, a supply hopper 14 is provided.
A supply hopper 24+ is arranged similarly. 26 is a discharge gate. A straight feeder 28 is arranged above these supply hoppers 24 in the same way as the straight feeder 18 .

Above the center of the straight edge of the upper edge opening of the collection chute 2.6, a dispersion feeder 30 is provided to feed the articles to be weighed to each linear feeder 18.28.

Discharge gate 12 of each weighing machine 10, discharge gate 1-16 of each supply hopper 14, straight feeder 18, and distributed feeder 3
0 is the arithmetic control section 3f! The control is performed based on the result of the calculation of the combination of the weighing signals from each load detector 13 performed by . Similarly, the discharge gate 22 of each weighing machine 20, the discharge gate 126 of each supply hopper 24, and each linear feeder 28
The distributed feeder 30 is controlled based on the result of the calculation of the combination of the weighing signals from each load detector 23 performed by the calculation control section 34. These calculation control units 32.34
Since the combinational operations performed by the above are well known, a detailed explanation thereof will be omitted.

However, these combination calculations can be performed simultaneously or alternately by the calculation control units 32 and 34.

The combination weigher configured in this way operates as follows.

It is now assumed that articles to be weighed are loaded into each weighing machine 10.20 and each supply hopper 14.24, and articles to be weighed are also supplied onto each linear feeder 18.28.

In this state, for example, the calculation control unit 32 variously combines the outputs of the load detectors 13, selects a suitable combination of weighing machines 10 that is equal to or close to a predetermined weight, and selects a suitable combination of weighing machines 10 of that combination. The discharge gate 12 is opened and the articles to be weighed are discharged into the collection chute 2. Empty weighing machine 10
The discharge gate 16 of the supply hopper 14 located above opens and supplies the empty weighing machine 10 with articles to be weighed. The linear feeder 18 above the empty supply hopper 14 vibrates and supplies the article to be weighed. In addition, the straight feeder 18
Objects to be weighed are supplied from a distributed feeder 30 to .

When the output of the load detector 13 of the weighing machine 10 into which the new article to be weighed is stabilized, the combination is started again, and from then on,
Repeat the operations described above.

In parallel with this, the calculation control unit similarly detects the load detector 28.
The discharge gates 22, 26, the straight feeder 28, and the distributed feeder 3o are controlled by various combinations of the outputs.

It can also be used in the following ways: When the article to be weighed is discharged from the weighing machine 10, the calculation control section 34 activates the load detector 23.
The outputs of are variously combined, a suitable combination is selected, and the article to be weighed is discharged from the weighing device 2o of the suitable combination. At this time, the weighing machine 10, which had been empty, is supplied with the articles to be weighed as described above, and the arithmetic control section 32 again selects a suitable combination as described above and discharges the articles to be weighed. do. At this time, the empty weighing machine 2o is supplied with the article to be weighed as described above, and the arithmetic control section 341 variously combines the outputs of the load detector 23 and again selects a suitable combination. do. Repeat this below.

A second embodiment is shown in FIG. In this embodiment, each feed hopper 14 is removed from the first embodiment, a shutter 36.36 is provided in each linear feeder 18.28 in its place, and a gate 12a that opens on both sides is replaced with a weighing machine 10.20. , 22
Weighing machine IQa with a112b, 22b, 20
a, and an auxiliary tank 38 is provided in the collection chute 2.6 so that articles to be weighed can be supplied from either of the two adjacent weighing machines 10a. 40 is the auxiliary tank 3
This is the discharge gate provided at 8.

In this embodiment, for example, adjacent weighing machines 10a110a
When the goods to be weighed are supplied to both sides, one of the weighing machines 1
0a discharge goo) 12a is opened and the article to be weighed is transferred to the auxiliary tank 38, the output of the load detector at that time is stored in the calculation control section 32, and the shutter 86 is set on the empty weighing machine 10a. Open the weighing machine 10 and transfer the article to be weighed.
The output of the load detector of a is taken first. Other points are similar to the first embodiment.

In the first embodiment, a supply hopper is used, but similarly to the second embodiment, a shutter may be provided on the linear feeder instead of these. Further, various known combination operations can be performed in addition to those shown in the above embodiments. For example, when a suitable combination is selected, one can immediately perform a selection of the suitable combination among the weighing machines that were not selected.

[Brief explanation of the drawing]

FIG. 1 is a front view of a first embodiment of a combination weigher according to the present invention, FIG. 2 is a partially omitted plan view of the first embodiment, and FIG. 3 is a partially omitted longitudinal section of the second embodiment. It is a diagram. 2... first collecting chute, 6... second collecting shoe), 10... first weighing type group, 14.18... first supply device, 20... second metric-like group of, 24.28
... second supply device, 30 ... third supply device. Patent applicant: Yamato Seiko Co., Ltd. Representative: Tetsu Shimizu and 2 other people (Figure 1)

Claims (2)

[Claims] (1) A first collecting chute, a second collecting chute arranged close to the first collecting chute, and a plurality of collecting chute arranged along the edge of the first collecting chute 1. A first storage tank group including a weighing machine, a second storage tank group including a plurality of weighing machines arranged along the edge of a second collection chute, and each weighing machine in the first storage tank group. a first supply device that supplies articles to be weighed to each weighing machine in the second storage tank group;
a third feeding device that feeds the article to be weighed to the feeding device f;
A combination scale equipped with t. (2) The combination weigher according to claim 1, wherein each of the first and second storage tank groups includes an auxiliary tank to which an article to be weighed is supplied from one machine in the group.