JP2561407Y2 - Sorting hopper - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sorting hopper for selectively sorting and discharging stored articles by opening or closing one of two gates.

[0002]

2. Description of the Related Art For example, in a combination weighing apparatus that combines a plurality of weighed articles to collectively discharge articles having a target weight and discharges the articles weighed by a weighing hopper, the combined weighing articles are quickly separated by another weighing hopper. It is configured to selectively discharge to multiple hoppers or selectively supply to multiple independent storage units of the weighing hopper to increase the number of weighed articles that can participate in the combination, Highly efficient weighing is realized.

[0003] For this purpose, in this type of weighing device, a sorting hopper that selectively discharges the stored articles in different discharge directions is used.

FIG. 9 schematically shows the sorting hopper 1.

The sorting hopper 1 has a cylindrical body 2 having an open top and bottom, and gates 3 and 4 rotatably mounted on both lower sides of the cylindrical body 2, respectively.

The gates 3 and 4 are connected to each other at their tips 3a and 4a.
Is brought into contact with the center of the hopper, and the bottom surface of the cylindrical body 2 is closed.

As shown in FIG. 10, bent portions 5 extending downward are provided at the tip portions 3a, 4a of the gates 3, 4.
A gate 6 is formed, and the bent portions 5, 6 are brought into contact with each other in the closed state of the gates 3, 4.

When one of the gates is opened, the articles stored in the sorting hopper 1 are discharged in a direction along the inclined surface of the other closed gate.

However, when the size of each article is small, when the gate is opened, a part of the ejected articles is lost due to collision of the articles ejected along the closed gate. It is discharged below the center, that is, on the side of the closed gate from the boundary C of the sorting.

As a technique for solving such uncertainty of distribution, Japanese Utility Model Application No. 63-101456 (Japanese Utility Model Application Laid-Open No. 2-24334) discloses a "hopper with double-opening gate for automatic weighing device". .

FIG. 11 shows a cross section of a main part of the disclosed technique.

In this hopper, when the left and right gates 7 and 8 are closed, the tip 7a of the left gate 7 abuts slightly above the tip 8a of the right gate 8,
The boundary C of the distribution is set between the contact position of the gates 7 and 8 (the position of the tip 7a of the gate 7) and the position of the tip 8a of the gate 8.

Therefore, regardless of which gate is opened, the articles housed in the hopper are discharged from an upper position beyond the sorting boundary C in a direction along the inclination of the closed gate. .

However, in the hopper configured as described above, as shown in FIG.
When an article Wa is sandwiched between the gate a and the gate 8 or when a gap is generated due to a mechanical dimensional error, there is a problem that an article smaller than the gap L is spilled.

Also, as shown in FIG.
Starts to open, the tip 8a is still located on the left side of the sorting boundary C, so that if the initial speed at the time of opening is low, a part of the stored articles is discharged to the opposite side. was there.

An object of the present invention is to solve this problem and to provide a sorting hopper which can sort articles reliably and does not cause spillage due to pinching of articles.

[0017]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a sorting hopper according to the present invention closes the hopper bottom in a substantially V-shape by contacting lower portions of each other in an inclined state.
With two gates, the lower part of one gate is opened outward and the discharge direction of the stored articles is regulated to the inclined direction of the other closed gate, so that the stored articles are selectively distributed to different discharge directions. In the distribution hopper, an extension portion is provided below the one gate and further extended from a contact position with the other gate, and a contact portion with the one gate is provided below the other gate. A first portion extending from the position to a position beyond the distal end of the extending portion so as to be bent in an extending direction of the extending portion and overlap the extending portion;
And a second bent from the end of the first bent portion so as to approach and oppose the distal end surface of the extended portion of the one gate, and extend substantially a predetermined distance in the opening direction of the extended portion. A bent portion is provided, and a boundary for distribution is provided between a tip of the extending portion of the one gate and a tip of the second bent portion of the other gate.

[0018]

With this configuration, in the sorting hopper of the present invention, when both gates are closed, the first bent portion of the other gate is connected to the extended portion extending from the lower portion of one gate. Are in contact with each other.

When one of the gates is opened and the extended portion is separated from the first bent portion, the stored articles are discharged from the inclined surface of the other gate along the second bent portion. When the other gate is opened, the stored articles are discharged along the slope of the one gate.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of the distribution hopper 10 of one embodiment, FIG. 2 is a rear view of the distribution hopper 10, and FIG. 3 is a perspective view of the distribution hopper 10.

As shown in these figures, the sorting hopper 10 is provided with two gates 2 on a cylindrical body 11 having an open upper surface.
0 and 30 are attached.

The front plate 12 and the rear plate 13 of the cylindrical body 11 are formed in the same pentagonal shape with a V-shaped lower part, and both upper sides are connected by left and right side plates 14 and 15.

The two gates 20, 30 are connected to the cylindrical body 11
Are mounted along the inclined open bottom surfaces 16 and 17.

The two gates 20 and 30 are inclined plates 21 and 31 for closing the open bottom surfaces 16 and 17 of the cylindrical body 11 in a closed state.
And the front plate 12 of the cylindrical body 11 from the front edges of the inclined plates 21 and 31.
Front plates 22 and 32 bent along, and inclined plates 21 and 3
The rear plate 23 has rear plates 23 and 33 bent from the rear edge along the back plate 13 of the cylindrical body 11.

The upper portions of the front plates 22 and 32 and the rear plates 23 and 33 of the gates 20 and 30 are supported by a shaft
The two gates 20 and 30 are rotatably attached to the front plate 12 and the rear plate 13 of the first support member 40.
Open and close using the fulcrum

The tip of the inclined plate 21 of the left gate 20 is uniformly spaced by a predetermined length L ₁ from a position P where the inclined plates of the left and right gates abut each other (hereinafter referred to as a contact position). An extended portion 21a is provided.

Further, the tip of the inclined plate 31 of the right gate 30, from this mating position P, is bent so as to overlap the extending portion 21a, first formed slightly longer than L ₁
Are provided.

At the tip of the first bent portion 34, the gate 20
The second bent portion 35 of the extension length is bent at substantially along the angle in the open Rhaki direction of portion L ₂ are provided for.

The length L ₂ of the second bent portion 35 is set in advance so that the position of the tip 35 a is on the left side (in FIG. 1) of the vertical line passing through the tangent position P.

An arm mounting plate 41 is mounted at the center of the back plate 12 of the cylindrical body 11.

The arm mounting plate 41 is formed with a fixing portion 41a screwed and fixed to the back plate 12, and one step higher than the fixing portion 41a, and the rear plates 23, 33 of the left and right gates 20, 30.
Arms 41b and 41 symmetrically extended so as to overlap with
c and stoppers 41d and 41e protruding from upper positions of the arms 41b and 41c.

At the tips of the arms 41b and 41c, central portions of symmetric arms 42 and 43 formed in a U-shape are rotatably mounted by support shaft members 44, respectively.

Abutting rollers 45 for abutting a driving lever of a weighing apparatus main body (not shown) and transmitting a pressing force of the driving lever to the arms 42 and 43 are attached to the ends 42a and 43a of the arms 42 and 43, respectively. , 45 are mounted respectively.

The other ends 42b and 43b of the arms 42 and 43 have one ends of connecting plates 46 and 46 mounted rotatably by support members 47 and 47, respectively.

The other ends of the connecting plates 46, 46
8, 48, the rear plates 23, 33 of the gates 20, 30
It is rotatably attached to the upper part of.

The both ends of the spring 50 are locked between the support shaft members 47,47. With this spring 50,
The arm 42 is urged counterclockwise in FIG. 2 and the arm 43 is urged clockwise. The rotation of the arms 42 and 43 by the spring 50 is applied to the stoppers 41 d and 41 e of the arm mounting plate 41. It is regulated at the contact position. The positions of the stoppers 41d and 41e are determined by the other ends 42b and 43 of the arms 42 and 43 when the gates 20 and 30 are closed.
It is determined in advance that b and the connecting plates 46, 46 are in contact with each other at a position where they are in a straight line.

Above the arm mounting plate 41, a support plate 53 for supporting both ends of the front and rear locking shafts 52, 52 is mounted. It is locked to the main body of the weighing device via the support plate 53.

Next, an operation of sorting the articles by the sorting hopper 10 will be described.

The article W supplied from above with both gates 20 and 30 closed is, as shown in FIG.
It is housed between 1 and 31.

Here, as shown in FIG. 2, when the contact roller 45 on the arm 42 side is pushed down by the drive lever from the weighing apparatus main body side, the other end 42b of the arm 42
Since the side rotates, the gate 20 connected to the arm 42 via the connecting plate 46 opens, and the extension 21 a of the gate 20 separates from the first bent portion 34.

Therefore, the article W accommodated between the inclined plates 21 and 31 is discharged in the direction of arrow A along the inclination of the inclined plate 31 of the gate 30 and the second bent portion 35.

When the pressing force on the arm 42 disappears, the arm 42 returns to the position where the other end 42b side comes into contact with the stopper 41d by the urging force of the spring 50, so that the gate 20 is also closed.

Conversely, when the arm 43 is pushed down, the gate 30 is opened, and the article W is discharged in the direction of arrow B along the inclined plate 21 of the gate 20.

Therefore, as shown in FIG. 4, a vertical line C passing through the intersection P of the inclined plates 21 and 31 is used as a boundary of the distribution, and the two hoppers 60 connected with a boundary corresponding to the line C are used. By arranging the lower part 61, it is possible to reliably distribute the stored articles to one of the hoppers 60 and 61.

Also, due to a mechanical dimensional error or the like, the extended portion 21 of the inclined plate 21 is closed in a state where both gates 20 and 30 are closed.
a and the first bent portion 34, or a small piece Wa of an article is interposed therebetween to form a gap L as shown in FIG. Bending part 3
Since the gap ΔL with 5 is small compared to L, the article hardly spills.

In theory, the bending direction of the second bent portion 35 may be set to the direction in contact with the rotation locus of the tip of the extending portion 21a of the inclined plate 21, but in this embodiment, mechanical bending is performed. Due to dimensional errors and backlash, the distal end of the extending portion 21a and the second bent portion 35 are bent at an angle that does not collide when opening and closing the gate.

Further, as shown in FIG. 6, when the start of opening of the gate 30, with respect to the distance L ₃ second bent portion 35 is away from the tip of the extending portion 21a, the first bent portion 34 is extended the distance L ₄ away from the portion 21a is much shorter.

Therefore, the first bent portion 34 and the extending portion 21
distance between a L ₄ is, when reaching a distance for passing the articles, the tip 35a of the second curved portion 35 has already moved largely to the right of distribution of the boundary C, even slower opening speed of the gate No article is ejected to the left of the sorting boundary C.

When the gate 30 starts to open as shown in FIG. 6, the gap between the gates does not increase until the first bent portion 34 separates from the tip of the extending portion 21. The second bent portion 35 is located at the boundary C of the distribution.
Since it is on the right side, even if the opening speed of the gate is slow, articles are not discharged to the left side of the sorting boundary C.

[0050]

[Other Embodiments] In the above embodiment, the second bent portion 35 is provided in a straight line. However, as shown in FIG.
A second bent portion 55 formed in an arc shape along the rotation trajectory R of the tip end may be provided.

In this embodiment, two gates 2
Although the reference numerals 0 and 30 are attached to the cylindrical body 11, the present invention can be similarly applied to a distribution hopper or the like having an outer peripheral portion composed of only two gates.

In the above embodiment, the gates 20, 30
A vertical line passing through the contact position between the inclined plates 21 and 31 is used as a boundary of the distribution, and the tip of the second bent portion 35 is made to exceed the boundary of the distribution. However, as shown in FIG. Can be provided at any position between the distal end position of the extending portion and the position of the distal end 56a of the second bent portion 56. In this case, the length C of the second bent portion 56 is the L ₅ may be shorter than L _2.

[0053]

As described above, in the sorting hopper of the present invention, the first bent portion bent at the tip of one of the gates so as to overlap the extended portion of the other gate, and the first bent portion. The second part is further bent from the part in the direction in which the extension part opens.
Is provided, and by setting a sorting boundary between the tip of the extending portion and the tip of the second bent portion, the stored articles can be reliably sorted and discharged.

Further, even when a gap is formed between gates due to an article being pinched or the like, or when the gate is opened slowly, it is possible to remarkably reduce spillage of the article from the gap.

[Brief description of the drawings]

FIG. 1 is a front view of one embodiment.

FIG. 2 is a rear view of the embodiment.

FIG. 3 is a perspective view of one embodiment.

FIG. 4 is a schematic sectional view of a main part for explaining the operation of one embodiment.

FIG. 5 is an enlarged schematic cross-sectional view of a main part for describing an operation of one embodiment.

FIG. 6 is an enlarged schematic cross-sectional view of a main part for explaining the operation of one embodiment.

FIG. 7 is an enlarged schematic sectional view of a main part for explaining another embodiment of the present invention.

FIG. 8 is an enlarged schematic sectional view of a main part for explaining another embodiment of the present invention.

FIG. 9 is a schematic front view of a conventional distribution hopper.

FIG. 10 is a sectional view of a main part of the hopper of FIG. 9;

FIG. 11 is an enlarged schematic sectional view of a main part of another conventional distribution hopper.

12 is an enlarged schematic cross-sectional view of a main part showing the operation of the hopper of FIG.

FIG. 13 is an enlarged schematic cross-sectional view of a main part showing the operation of the hopper of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Sorting hopper 11 Cylindrical body 12 Front plate 13 Back plate 14, 15 Side plate 16, 17 Opening bottom surface 20, 30 Gate 21, 31 Inclined plate 21a Extension 22, 22, Front plate 23, 33 Rear plate 34 1st bending part 35 second bent portion 41 arm mounting plate 42, 43 arm 46 connecting plate 50 spring 60, 61 hopper

Claims (1)

(57) [Scope of request for utility model registration] 1. An apparatus according to claim 1, further comprising two gates for closing the hopper bottom in a substantially V-shape by bringing the lower portions into contact with each other in an inclined state,
In a sorting hopper, the lower part of one of the gates is opened outward and the discharge direction of the stored articles is regulated to the inclined direction of the other closed gate, so that the stored articles are selectively distributed to different discharge directions. of the bottom of the gate, extending portion which is further extended from the contact position with the other gate is provided, wherein the lower portion of the other gate, the extension from the contact position with the front SL one gate Bent in the direction of extension of the part
A first bent portion which extends to a position overlapping manner over the tip of the extended portion, before the end of the first bent portion
So that it is close to the tip of the extension of one of the gates.
A second bent portion that is bent and extends substantially a predetermined distance in the opening direction of the extension portion, and the second gate
A tip of the second portion and a tip of the second bent portion of the other gate;
A sorting hopper, wherein a sorting boundary is provided between the two .