JPH057551Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to a device used to collect and supply a group of articles discharged from a combination weigher as meeting predetermined conditions to a packaging machine or the like.

<Prior art> Conventionally, as the above-mentioned device, for example,
There is one disclosed in Publication No. 125322. It consists of an inner chute 2 and an outer chute 4, as shown in FIGS. 11 and 12. The inner chute 2 has an input port 2a at the top and a discharge port 2b at the bottom.
They are each shaped like an inverted cone. The outer chute 4 is also formed into an inverted conical shape having an input port 4a at the top and a discharge port 4b at the bottom. The inner chute 2 is provided so that the input ports 2a and 4a are located concentrically within the outer chute 4, and the inner chute 2 is provided so that the outlet port 2b of the inner chute 2 is located outside the outer chute 4. 2 and the outer chute 4 intersect. Although not shown in FIGS. 11 and 12,
A plurality of weighing tanks are provided in both the inner chute 2 and the outer chute 4 so that articles can be discharged. These weighing tanks form part of the combination scale. Furthermore, a packaging machine or a bucket interlocked with the packaging machine is provided below the input ports 2b and 4b.

This device collects articles discharged simultaneously or alternately from a weighing tank into an inner chute 2 and an outer chute 4, and supplies them from respective discharge ports 2b and 4b to a packaging machine or a bucket linked to the packaging machine.

Further, as a conventional device, there is also one disclosed in Japanese Patent Application Laid-Open No. 58-2621. This is as shown in FIGS. 13 and 14, and to put it simply, the outer chute 4 shown by the symbol A in FIG. 12 is removed. 6, 6... are weighing tanks configured so that articles can be discharged to both the inner and outer chute 2, 4, and 8, 8... are weighing tanks configured so that articles can be discharged to the inner chute 2. , is provided in the portion where the above-mentioned outer chute 4 is removed. A packaging machine or a bucket linked thereto is provided below the discharge ports 2b and 4b. This device is also used in the same manner as shown in FIGS. 11 and 12.

<Problems to be solved by the invention> In the structure shown in FIGS. 11 and 12, the inner and outer chute 2 and 4 intersect with each other in the shape of an inverted truncated cone. As such, the intersection has a considerable size. Therefore, the articles discharged into the outer chute 4 and reaching the vicinity of the intersection 10 have to largely detour around the intersection 10 and flow, which increases the length of the discharge path.
The discharge speed was slower than the articles flowing through the inner chute 2. In particular, when articles are discharged into both the inner and outer chutes 2 and 4 at the same time, there is a problem that the times at which the articles arrive at the discharge ports 2b and 4b are different. Furthermore, since the intersection 10 is quite large, the distance between the inner chute 2 and the outer chute 4 at the portion indicated by the symbol A in FIG. 12 is downward as indicated by the symbol B in FIG. 11. Accordingly, the width gradually becomes narrower, and depending on the articles to be discharged, a bridging phenomenon may occur at the portion indicated by the symbol RO, making it impossible to discharge the articles.

In the apparatus shown in FIGS. 13 and 14, since the portion of the outer chute 12 indicated by the symbol A is omitted, the above-mentioned problem does not occur. However, due to the partial cutout, the weighing tank 8 in the notched portion can only be discharged to the inner chute 2, which causes a problem when articles are discharged alternately to both the inner and outer chute 2, 4. In other words, such a device is used when the packaging machine receives a very large number of articles per unit time, and in order to cope with this, the combination weigher alternately sends items to both the internal and external chutes 2 and 4 of this device. It is also necessary to increase the number of times it can be discharged. Therefore, if you wait until the supply and weighing of the articles into the weighing tank that discharged the articles into both the inner and outer chute 2 and 4 is completed before selecting the next combination of articles, the number of times the articles are discharged will increase. Since this is not possible, the weighing tank from which the article was discharged is not considered for combination until the supply and weighing of the article is completed, and only the remaining weighing tanks select the next combination. Therefore, for example, if we consider a case where there are 4 weighing tanks 8 that can discharge only to the inner chute 2 and 10 weighing tanks 6 that can discharge to both the inner and outer chute 2 and 4, the number of weighing tanks 8 that can be discharged only to the inner chute 2 is 10. One weighing tank 8, one weighing tank 6
If this is done with three weighing tanks, the next selection of the articles to be discharged into the outer chute 4 can only be made for the seven weighing tanks 6 that can discharge articles either inside or outside, and the selected article cannot be selected. The combination accuracy was decreasing. In order to solve this problem, it is necessary to increase the number of weighing tanks 6 that can discharge articles into both the inner and outer chute 2, 4, which increases the cost of the combination scale, increases the size of the combination scale and this device, and increases the installation cost. A lot of space was needed.

<Means for Solving the Problems> In order to solve the above-mentioned problems, this invention includes an outer chute and an inner chute. The outer chute is divided into upper and lower parts, and has an inlet for the outer chute at the upper end, an inlet and an eccentric outlet at the lower end, and the diameter increases from the inlet to the outlet. It is shrinking. The inner chute is provided within the outer chute and is divided into an upper part and a lower part. The upper part has an input port for the inner chute provided at the upper end portion approximately concentrically with the input port for the outer chute, and a lower end port provided below the input port for the inner chute approximately concentrically therewith. ing. The diameter of the upper part decreases from the input port of the inner chute toward the lower end port. The lower part is connected to the lower end opening, and this lower part has a cylindrical part that penetrates the outer chute and protrudes to the outside, and the lower end of this cylindrical part is located at approximately the same height as the outlet of the outer chute. Position to,
The diameter of this cylindrical portion is less than or equal to the diameter of the lower end opening. The outer chute is formed with an open portion through which the cylindrical portion passes, and a cover that protrudes toward the inner chute is formed on the edge of the open portion.

<Function and Effect> According to this device, the articles discharged into the inner chute are discharged from the top to the bottom of the inner chute. On the other hand, the articles discharged into the outer chute are discharged from the top to the bottom of the outer chute. Therefore, by simply arranging a packaging machine or the like below the lower end of the cylindrical part of the inner chute and below the discharge port of the outer chute, the articles discharged into the inner and outer chutes can be
Each of the outer and inner chutes can be packaged separately. Moreover, the intersection between the outer and inner chutes is achieved by a cylindrical portion having a diameter equal to or smaller than the diameter of the lower end opening of the inner chutes, which is approximately concentric with the feed opening of the inner chutes, penetrating the outer chutes, so that the intersection is small, and therefore the detour path for the articles is short. Even if articles are discharged simultaneously into both the inner and outer chutes, the articles can be discharged to the outside of both chutes at approximately the same time. In addition, since a gap is always formed between the upper part of the inner chutes and the outer chutes, the articles do not get stuck between the upper part of the inner chutes and the outer chutes. Furthermore, since no part of the outer chutes is missing, the articles in all the measuring chambers of the combination weigher can be discharged into either the inner or outer chutes. Therefore, even in the case of alternate discharge, when a selection is made to discharge articles into the outer chutes after discharging articles into the inner chutes, the number of measuring chambers to be selected is not extremely reduced, and the combination accuracy is not deteriorated.

Furthermore, since both the inner and outer chute are divided into upper and lower parts, their manufacturing, handling, assembly,
Easy to clean. In particular, since the outer chute is provided with an open part and the cylindrical part of the inner chute is made to protrude outward from this open part, the outer chute is passed through the cylindrical part. Work becomes easier. Moreover, since a cover is provided on the edge of the open part of this outer chute, even if the outer chute is penetrated through the cylindrical part as described above, the measuring tank provided near this open part cannot be removed. Articles can also be discharged from the discharge port without leaking to the outside from the opening.

<Example> A first example is shown in FIGS. 1 and 2. In both figures, 20 is an outer chute and 22 is an inner chute. The outer chute 20 is formed into an upright truncated cone shape, that is, an inverted truncated cone shape,
It has a circular inlet 24 with a large diameter at its upper end, and a circular outlet 26 with a smaller diameter than the circular inlet 24 at its lower end. The center of the outlet 26 is located laterally than the center of the input port 24.

The inner chute 22 consists of an upper part 28 and a lower part 30. The upper part 28 is also formed in the shape of an upright truncated cone, and a large diameter circular input port 32 is provided at the upper end thereof.
It has a small diameter circular lower end opening 34 at the lower end. The input port 32 and the lower end port 34 are located approximately concentrically, and the upper portion 32 is disposed within the outer chute 20 such that the input port 32 is located concentrically with the input port 24. As a result, the upper part 32 and the outer chute 2 at the right end in FIG.
The gap with 0 is narrower than the gap at the left end. lower part 3
0 is formed into a cylindrical shape with an inclined lower end, and the upper end opening is connected to the lower end opening 34 of the upper part 28. The lower part 30 intersects with the outer chute 20 halfway, and the lower end of the lower part 30 protrudes outward from the outer chute 20. The lower end opening 36 of the lower part 30 serves as the outlet of the inner chute 22. Note that the diameters of the lower end port 34 and the discharge ports 26, 36 are approximately equal. In addition, since the lower part 30 intersects the outer chute 20 halfway, it is marked 3 in FIG.
7, the intersection is considerably smaller than the conventional one shown in FIGS. 11 and 12, and the inner chute 22, as shown by C in FIG.
The gap between the outer chute 20 and the outer chute 20 has a constant width.

38, 38... are weighing tanks of a combination scale, each having two gates 38a, 38b so that articles can be discharged into both the inner and outer chute 20, 22, and the periphery of the input port 32 of the inner chute 22. It is located in the department.

In the first embodiment configured in this way, the inner chute 22 and the outer chute 20 are arranged as described above.
Since the intersection 37 with the outer chute 20 is small,
The detour route for the articles discharged to the inner chute 22 and the outer chute 20 is shortened, and even if the articles are discharged to the inner chute 22 and the outer chute 20 at the same time, the articles arrive at the discharge ports 26 and 36 at almost the same time, and the discharge timing does not deviate. . In addition, since there is a gap of a certain size between the inner chute 22 and the outer chute 20 in the vicinity of the intersection 37, as shown by the symbol C, there is a possibility that the article will cause a bridging phenomenon in the part indicated by the symbol C. Nor. Furthermore, all of the weighing tanks 38, 38...
Since articles can be discharged to both the inner chute 22 and the outer chute 20, after the articles are discharged to the inner chute 22, the target articles are stored when selecting a combination of articles to be discharged to the outer chute 20. The number of weighing tanks does not decrease drastically, and the combination accuracy does not decrease even if the number of discharges per unit time is increased.

A second embodiment is shown in FIGS. 3 and 4. Second
This embodiment has the same structure as the first embodiment except that a rectifying plate 40 is provided. The current plate 40 is the third
As shown in the figure, it is provided in a narrow gap between the inner chute 22 and the outer chute 20. As shown in FIG. 4, the current plate 40 tapers upward from both sides of the lower part 30 along the outer chute 20. As shown in FIG. As a result, the articles discharged into the outer chute 20 do not directly collide with the portion of the lower part 30 that exists within the outer chute 20, and flow smoothly. This prevents the articles from bouncing around, and when the articles are simultaneously discharged into both the inner and outer chutes 20 and 22, there is no difference in the time at which the articles arrive at the discharge ports 26 and 36. Moreover, since the article does not collide directly with the lower part 30, the article will not be damaged.

FIG. 5 shows a third embodiment. This embodiment has the same structure as the first embodiment except that the shape of the lower portion 30 is different. The lower part 30 has a vertical portion 3 extending vertically downward from the lower end opening 34 of the upper part 28.
0a, and an inclined portion 30b extending diagonally downward from the lower end opening of the vertical portion 30a, intersecting with the outer chute 20, and protruding outward. Since the vertical portion 30a is provided in this way, the inner chute 2
2, all of the articles flow in the vertical direction once at the vertical portion 30a, so the flow of all the articles becomes constant, and there is no variation in the time at which the articles arrive at the discharge port 36. That is, for example, the inner chute 2 indicated by the symbol D in FIGS. 1 and 3
Objects sliding along the section marked 8 head directly toward the discharge port 36 without any obstacles, but objects sliding along the section marked E suddenly collide with the section marked d before reaching the discharge port 36. Head towards. Therefore, there is a possibility that the time at which the articles arrive at the same discharge port 36 varies. However, in this example,
Since the vertical portion 30a is provided as described above,
There is no such fear.

A fourth embodiment is shown in FIGS. 6 to 10. In this embodiment, as shown in FIGS. 6 and 7, the outer chute 41 also consists of an upper part 42 and a lower part 44. The inner chute 46 also consists of an upper part 48 and a lower part 50, but is different from the first to third embodiments in that the lower part 50 has an inverted truncated conical shape 54 above the cylindrical part 52. Furthermore, as shown in FIG.
The upper part 42 of 1 includes six parts 48a,
It is divided into 48a..., 42a, 42a.... The lower portions 44 and 50 of the outer chute 41 and the inner chute 46 are each integrally formed, and the lower portion 44 of the outer chute 41 has a
A notch 56 is provided through which the cylindrical portion 52 of the lower portion 50 of the inner chute 46 is inserted. 9th
The cylindrical portion 52 of the lower portion 50 of the inner chute 46 is shown in the figure.
It shows a state where it is fitted into the notch 56 of the lower part 44 of the outer chute 41. As shown in FIGS. 8 and 10, a cover 56a is provided around the notch 56 of the lower part 44 of the outer chute 41, and the upper part 42 of the outer chute 41 located above the notch 56 is provided with a cover 56a.
The peripheral edges 42c of the adjacent portions 42a, 42a are in contact with each other, and the covers 42d, 42d are provided on the sides of the portions 42a, 42a, so that the inner chute 4 can be removed from the weighing tank 38 provided in the vicinity.
6. Articles can be discharged to any of the outer chute 41. In this way, the inner chute 46 and the outer chute 41 are connected to the upper part 42, 48 and the lower part 44, 5, respectively.
Since the upper parts 42 and 48 are formed separately, manufacturing, assembly, handling, cleaning, etc. are facilitated.

In each of the above embodiments, each chute is shaped like an inverted truncated cone, but it may also be shaped like an inverted polygonal truncated pyramid. Furthermore, although the lower portions 30, 50 of the inner chute 22, 46 are cylindrical, they may be rectangular cylindrical. Also, weighing tank 3
8 is provided, but instead of this, an auxiliary tank may be provided that simply receives the supply of articles and can discharge the articles to either the internal or external chute. However, in that case,
Above each auxiliary tank, it is necessary to provide a weighing tank configured to weigh articles and supply them to the auxiliary tank.

[Brief description of the drawings]

Fig. 1 is a partially omitted vertical cross-sectional view of a first embodiment of the article collecting device for a combination weighing device according to this invention, Fig. 2 is a partially omitted plan view of the first embodiment, and Fig. 3 is a partially omitted plan view of the first embodiment. 4 is a sectional view taken along line A-A in FIG. 3; FIG. 5 is a partially omitted vertical sectional view of the third embodiment; FIG. 6 is a partially omitted longitudinal sectional view of the fourth embodiment. FIG. 7 is a partially omitted side view of the fourth embodiment, FIG. 8 is an assembled view of the fourth embodiment, and FIG. 9 shows both the interior and exterior of the fourth embodiment. A perspective view showing a state in which the lower parts of the chute are assembled, FIG. 10 is a perspective view showing a state in which the lower part and a part of the upper part of the outer chute of the fourth embodiment are assembled, and FIG. 11 is a conventional combination. FIG. 12 is a partially omitted longitudinal cross-sectional view of one example of an article collecting device for a scale; FIG. 13 is a partially omitted plan view of another example of a conventional combination weighing article collecting device; FIG. 14 is a front view with the same parts omitted. 20, 41... Outer chute, 22, 46...
Inner chute, 28, 48... upper part of the inner chute, 30, 50... lower part of the inner chute.

Claims (1)

[Scope of Claim for Utility Model Registration] It is divided into upper and lower parts, and has an input port in the outer chute at the upper end, and an outlet eccentric to the input port at the lower end, and from the input port to the discharge port. An outer chute is provided within the outer chute, the diameter of which decreases toward the outer chute, and is divided into an upper part and a lower part. The inner chute has an input port provided therein, a lower end port provided below the input port of the inner chute and substantially concentric therewith, and the upper part is connected from the input port of the inner chute to the lower end port. The diameter decreases toward the outer chute, and the lower part is connected to the lower end port, and this lower part penetrates the outer chute and protrudes to the outside, and the lower end thereof is at approximately the same height as the outlet of the outer chute. an inner chute having a cylindrical portion having a diameter less than or equal to the diameter of the lower end opening, the outer chute having an open portion through which the cylindrical portion passes; An article collecting device for a combination weigher, wherein a cover is formed on an edge of the holder to protrude toward the inner chute side.