KR102569004B1 - sorting equipment of reverse way - Google Patents

Abstract

The present invention relates to a reverse sorter for sorting in order from large to small, and more particularly, when sorting various types of sorting objects such as fruits or agricultural products by size, by sorting in order from large to small, contrary to the prior art. It relates to a reverse type sorter capable of preventing damage to large-sized products with high marketability.

Description

Reverse sorting machine for sorting in order from largest to smallest {sorting equipment of reverse way}

The present invention relates to a reverse sorter for sorting in order from large to small, and more particularly, when sorting various types of sorting objects such as fruits or agricultural products by size, by sorting in order from large to small, contrary to the prior art. It relates to a reverse type sorter capable of preventing damage to large-sized products with high marketability.

In general, a sorter is a device that sorts various types of sorting objects such as fruits, agricultural products, aggregates, and industrial products by size, weight, and shape.

As a sorter for sorting objects by size, a method using a rotating drum or a belt type conveyor is mainly used.

In a sorter using a rotating drum, since the sorting object continues to collide with the inner circumferential surface of the drum, a lot of damage occurs to the sorting object. In particular, foods such as fruits and agricultural products are easily damaged because their surfaces are not hard.

To this end, food products such as fruits and agricultural products mainly use a belt type conveyor.

Republic of Korea Patent Publication No. 10-2014-0038006 discloses an automatic sorting device using a conveyor method.

Since the automatic sorting device as described above uses a belt-type conveyor, it has an advantage of minimizing damage to the sorting object compared to a rotating drum type.

As in the above-described automatic sorting device, conventionally, a method of sorting by size by installing a plurality of conveyors in multiple stages is common. This conventional method is a method of sorting the smallest size first on the first conveyor and then sorting the larger size on the next conveyor. That is, they are sorted in order of size from smallest to largest. In the case of such a method in which small-sized objects are sorted first and large-sized ones are sorted last, the large-sized sorting objects with the best marketability can be sorted only when all of them pass through a plurality of conveyors.

In order to classify the size of the sorting object into 3 to 5 or more types, the sorter is installed with as many as 4 or 5 or more conveyors in succession. In this case, the largest size sorting object has to go through a plurality of conveyors in turn, and in this process, the appearance of the large size sorting object is damaged. As for fruits and agricultural products, the largest size has the highest marketability, which inevitably leads to a decrease in farm household income.

Republic of Korea Patent Publication No. 10-2014-0038006: Blueberry automatic sorting device

The present invention was created to improve the above problems, and when sorting various types of sorting objects such as fruits and agricultural products by size, in contrast to the prior art, sorting in order from large to small to prevent damage to large-sized products with high marketability. Its purpose is to provide a reverse sorter that can do this.

In order to achieve the above object, the reverse type sorter for sorting in order from large to small of the present invention includes a first conveying belt having a first sorting hole for passing sorted objects of a certain size or less among sorted objects, A first sorting conveyor including a plurality of first rollers supporting the first conveying belt so that the first conveying belt can rotate while forming an endless track; Installed on the inside of the first transfer belt, a second sorting hole smaller than the first sorting hole is formed to pass sorting objects of a certain size or less among the sorting objects that have passed through the first sorting hole, and the first sorting hole is formed. A second sorting conveyor including a second conveying belt shorter than the belt and a plurality of second rollers supporting the second conveying belt so that the second conveying belt can rotate while forming an endless track; A first guide chute installed on the inside of the first conveying belt to be located outside the second conveying belt and for collecting sorting objects larger than the second sorting hole among the sorting objects passing through the first sorting hole and; A main guide formed on one side of the first guide chute to receive the sorted objects that have passed through the first sorting hole and fall into the area where the second transfer belt is not located and move them in the direction of the first guide chute. wing parts; Among the sorting objects that passed through the first sorting hole, after falling onto the second conveying belt, the sorting object that moved while being caught in the second sorting hole, got out of the second sorting hole, and fell outside the second conveying belt. a sub-guided wing part formed on the other side of the first guide chute to receive and move it in the direction of the first guide chute; A second guide chute installed inside the second transfer belt to collect the sorting objects that have passed through the second sorting hole.

In order to prevent a sorting object caught in the first sorting hole among the sorting objects from being damaged by contact with the first roller, at least one of the first rollers is formed so as not to contact the first sorting hole, The first transfer belt includes a perforated area portion having the first sorting hole formed therein, and first and second side area portions provided to have a predetermined width on both sides of the perforated area portion and not having the first sorting hole formed therein, The first roller includes a first side roll in contact with the first side area, a second side roll spaced apart from the first side roll and in contact with the second side area, and one side of the first side roll. It is coupled to the roll and the other side is coupled to the second side roll and has a reduced diameter formed with a smaller diameter than the diameters of the first and second side rolls.

and a pushing means for pushing the sorting object caught in the first sorting hole outwardly from the inside of the first conveying belt to remove it from the first sorting hole, wherein the pushing means is provided on the inner side of the first conveying belt. A cylindrical housing rotatably installed on the outer circumferential surface of the housing, and push protrusions formed to protrude from the outer circumferential surface of the housing and inserted into each of the first sorting holes passing through the first roller to push the sorting object caught in the first sorting hole. The push protrusion is formed of an elastic material so as to be elastically deformed, has a diameter of 1/3 to 2/3 of the diameter of the first sorting hole, and an end portion is formed in a streamlined dome shape.

The primary sorting conveyor has a support frame installed on both left and right sides of the first conveying belt to support the first rollers, and installed on the support frame to be spaced apart from the conveying belt and positioned above the first conveying belt. and a direction guiding part for guiding the sorting object rolling into the first and second side areas toward the perforated area.

As described above, the present invention is provided with a plurality of sorting conveyors formed with sorting holes of different sizes, and the sorting conveyor with large sorting holes is placed outside and the sorting conveyor with small sorting holes is placed inside. It is possible to select in order from smallest to smallest.

Therefore, since the present invention is a method of first sorting a large-sized sorting object with high marketability, damage to the large-size sorting object can be minimized.

In addition, the present invention can increase the marketability of the sorting object by configuring the sorting object caught in the sorting hole among the sorting objects not to come into contact with the roller.

1 is a side view showing the appearance of a reverse sorter according to an example of the present invention,
Figure 2 is a schematic diagram for showing the use state of Figure 1,
Figure is a perspective view showing the main parts of a reverse sorter according to another example of the present invention,
Figure 4 is a cross-sectional view of Figure 3,
5 is a cross-sectional view showing the main parts of a reverse sorter according to another example of the present invention,
6 is a cross-sectional view showing the main parts of a reverse type sorter according to another example of the present invention;
7 is a cross-sectional view showing the main parts of a reverse sorter according to another example of the present invention,
8 is a side view showing the appearance of a reverse sorter according to another example of the present invention,
Figure 9 is a perspective view showing an extract of the main part of Figure 8,
10 is a side view showing the appearance of a reverse sorter according to another example of the present invention,
Figure 11 is a schematic diagram for showing the use state of Figure 10,
12 is a perspective view showing the main parts of a reverse sorter according to another example of the present invention,
13 is a cross-sectional view of FIG. 12;
14 is an excerpted perspective view for showing the operation of FIG. 12;
15 is a cross-sectional view showing the main part of a reverse sorter according to another example of the present invention;
16 is an exploded perspective view showing the main part of a reverse sorter according to another example of the present invention;
17 is a cross-sectional view showing a state in which FIG. 16 is applied;
18 is a cross-sectional view illustrating the operation of FIG. 17;

Hereinafter, a reverse sorter for sorting in order from largest to smallest according to a preferred embodiment of the present invention will be described in detail.

The reverse type sorter of the present invention is for classifying objects by size. Fruits can be exemplified as a selection target. In particular, fruits having a round shape, such as blueberries, are suitable as screening objects.

The inverse type sorter of the present invention sorts the sorted objects by size by sequentially passing the sorted objects with a plurality of conveyor belts rotating while forming an endless orbit. For example, objects to be sorted can be classified into at least three groups according to their sizes. For example, a first group consisting of selection objects of a certain size or larger, a second group consisting of selection objects smaller in size than the selection objects corresponding to the first group, and a size larger than the selection objects corresponding to the second group It can be classified into a third group consisting of small selection objects.

In Figures 1 and 2, the sorting objects are classified into three types of sizes as an example, but, unlike this, it is possible to classify into four, five, or six or more sizes by varying the number of sorting conveyors. In FIG. 1, the direction of the arrow means the direction of rotation of the first and second conveying belts 11 and 31.

Referring to Figures 1 and 2, the reverse type sorter according to an example of the present invention is provided with a primary sorting conveyor 10 and a secondary sorting conveyor 30.

The primary sorting conveyor 10 has a first conveying belt 11 formed with a first sorting hole 13 for passing sorting objects of a certain size or less among sorting objects, and the first conveying belt 11 is an endless track. It includes a plurality of first rollers 21, 23, 25, 27, 28, 29 supporting the first conveying belt 11 so as to rotate while forming.

The first conveying belt 11 is supported by the first rollers 21, 23, 25, 27, 28, and 29 and rotates while forming an endless orbit. The first transfer belt 11 serves to primarily select a sorted object corresponding to a first group among the sorted objects while moving the sorted objects from one side to the other.

A plurality of first sorting holes 13 are formed in the first conveying belt 11 . Of course, the first sorting hole 13 may be formed in various shapes such as circular, elliptical, pentagonal, hexagonal, etc. according to the type of the sorting object.

The first rollers are provided in two or more. Depending on the number and position of the first rollers, the conveying belt 11 forms an endless track that rotates along various paths.

In the illustrated example, six first rollers are provided. For example, the first rollers include a driving roller 21, a driven roller 23 spaced apart from the driving roller 21 in the front-rear direction, and guide rollers disposed below the driving roller 21 and the driven roller 23. (25) (27) (28) (29).

Although not shown, a sprocket is installed on the rotating shaft of the drive roller 21, and the sprocket may be connected to the motor through a chain.

When the sorting objects 1 larger in size than the first sorting hole 13 fall outside the first conveying belt 11, a collection box for collecting them is installed outside the first conveying belt 11, as well as am.

The secondary sorting conveyor 30 is formed with a second sorting hole 33 for passing sorting objects of a certain size or less among the sorting objects that have passed through the first sorting hole 13, and the first conveying belt 11 The second conveying belt 31 installed inside, and a plurality of second rollers 41 supporting the second conveying belt 31 so that the second conveying belt 31 can rotate while forming an endless track ( 43) (45) (47) (48) (49).

The second conveying belt 31 is supported by the second rollers 41, 43, 45, 47, 48, and 49 and rotates while forming an endless orbit. The second transfer belt 31 serves to select objects corresponding to the second and third groups among the objects to be sorted while moving the objects to be sorted from one side to the other.

The second conveying belt (31) is installed inside the first conveying belt (11). The second conveying belt 31 is shorter than the first conveying belt 11 . Therefore, the rotation path of the second transfer belt 31 is shorter than that of the first transfer belt 11 .

A plurality of second sorting holes 33 are formed in the second conveying belt 31 . Of course, the second sorting hole 33 can be formed in various shapes such as circular, elliptical, pentagonal, hexagonal, etc. according to the type of the sorting object. The size of the second sorting hole 33 is smaller than that of the first sorting hole 13 .

Two or more second rollers 41, 43, 45, 47, 48, and 49 are provided. Depending on the number and position of the second rollers 41, 43, 45, 47, 48, and 49, the second conveying belt 33 forms an endless orbit that rotates along various paths.

In the illustrated example, the second rollers 41, 43, 45, 47, 48, and 49 are provided in six numbers. For example, the second rollers include a driving roller 41, a driven roller 43 spaced apart from the driving roller 41 in the front-rear direction, and a guide roller disposed below the driving roller 41 and the driven roller 43 ( 45) (47) (48) (49).

Although not shown, a sprocket is installed on the rotating shaft of the driving roller 41, and the sprocket may be connected to the motor through a chain.

When sorting objects larger in size than the second sorting hole 33 fall outside the second conveying belt 31, the first guide chute 15 for guiding them to the collection box is outside the second conveying belt 31. located in

The first guide chute 15 is installed inside the first conveying belt 11 so as to be located outside the second conveying belt 31. Among the sorting objects passing through the first sorting hole 13, the sorting object 2 that is larger than the second sorting hole 33 is collected.

The objects to be sorted that have fallen into the first guide chute 15 are slipped or rolled and introduced into the collection box. Although not shown, a collection box for collecting objects moving through the first guide chute 15 is installed.

The first guide chute 15 is composed of an inclined plate 15a for introducing objects into the collection box and side walls 15b and 15c formed on both sides of the inclined plate 15a. In the illustrated example, one side wall 15b is formed higher than the other side wall 15c.

On both sides of the first guide chute 15, main guide vanes 17 and sub guide vanes 16 are installed to move the objects to be sorted in the direction of the first guide chute 15.

The main guide vane portion 17 is bent at the upper end of one side wall 15b of the first guide chute 15 and is formed to extend in the direction of the driving roller 21. The end of the main guide vane 17 is located below the drive roller 21. The main guide vane 17 is formed to be inclined so as to be gradually lowered toward the first guide chute 15.

The above-described main guide vane unit 17 receives the sorting objects 2 that fall into the area where the second transfer belt 31 is not located among the sorting objects that have passed through the first sorting hole 13, and moves the first guide chute ( 15) It serves to move in the direction. Since the supply hopper is installed around the driven roller 23, the sorting objects put into the supply hopper fall onto the first conveying belt 31 where the driven roller 23 is located. The sorting objects placed on the first conveying belt 31 are sorted while passing through the section A between the driven roller 23 and the driving roller 21 . That is, sorting objects smaller in size than the first sorting hole 13 pass through the first sorting hole 13 and fall onto the second transfer belt 31, and sorting objects larger than the first sorting hole 13 ( 1) continues to move along the first conveying belt 11 and then falls outside the first conveying belt 11.

When the section of the first conveying belt 11 positioned horizontally between the driven roller 23 and the driving roller 21 is referred to as the first conveying belt sorting section A, the size is larger than that of the first sorting hole 13. Most of the small sorting objects pass through the first sorting hole 13 within the half of the first conveying belt sorting section (A). And, although smaller than the first sorting hole 13, if the size is similar to that of the first sorting hole 13, it may pass through the first sorting hole 13 in the section past half of the first conveying belt sorting section (A). do. After passing half of the first conveying belt sorting section (A), the sorting object (2) passing through the first sorting hole (13) falls to the area where the second conveying belt (31) is not located, and the main guide vane (17) can prevent this.

Along with this, among the sorting objects that have passed through the first sorting hole 13, the sorting object 2 that is larger than the second sorting hole moves while being placed on the second conveying belt 31, and moves along the second conveying belt 31. It can fall far outside, and at this time, the main guide wing unit 17 prevents the sorting object 2 from escaping the first guide chute 15. The sorting object 2 that falls far outside the second transfer belt 31 moves to the first guide chute 15 after colliding with the main guide vane 17.

The sub guide wing part 16 is bent and extended in the opposite direction to the main guide wing part 17 at the upper end of the other side wall 15c of the first guide chute 15. The end of the sub guide vane 16 is located below the second transfer belt 31. The sub-guided wing unit 16 is inclined so as to gradually lower in the direction of the first guide chute 15.

The sub guide wing unit 16 passes through the first sorting hole 13 and, among the sorting objects that have fallen to the second transfer belt 31, the sorting objects that are similar in size to the second sorting hole 33 pass through the second sorting hole ( 33) and may be stuck in the second sorting hole 33. In this way, the sorting object caught in the second sorting hole 33 can move along the second conveying belt 31 and pass through the second conveying belt sorting section B to get out of the second sorting hole 33. At this time, the sub guide wing unit 16 serves to receive the sorting object coming out of the second sorting hole 33 and move it in the direction of the first guide chute 15.

A sorting object having a similar size to the second sorting hole 33 often does not pass through the second sorting hole 33 and moves while being caught in the second sorting hole 33 . Since the object to be sorted is overturned as it passes through the driving roller 41, it can be easily separated from the second conveying belt 31 by coming out of the second sorting hole 33. In this way, some of the sorting objects falling out of the second sorting hole 33 and falling outside the second transfer belt 31 are received by the sub guide wing 16 and moved to the first guide chute 15.

The second guide chute 35 is installed inside the second transfer belt 31 and collects the sorting objects that have passed through the second sorting hole 33. The second guide chute 35 guides objects smaller in size than the second sorting hole 33 to the collection box when they fall inside the second transfer belt 31. Although not shown, a collection box for collecting objects moving through the second guide chute 35 is of course installed.

The second guide chute 35 is composed of an inclined plate for introducing objects into the collection box and side walls formed on both sides of the inclined plate. And, on both sides of the second guide chute, main guide vanes 37 and sub guide vanes 36 are installed to move the sorting object in the direction of the second guide chute 35.

The main guide vane 37 is bent at the upper end of one side wall of the second guide chute 35 and is formed to extend in the direction of the driving roller 41 . The end of the main guide vane 37 is located below the drive roller 41. The main guide vane portion 37 is inclined so as to be gradually lowered toward the second guide chute 35.

The sub guide vane 36 is bent and extended in the opposite direction to the main guide vane 37 at the upper end of the other side wall of the second guide chute 35. The end of the sub guide vane 36 extends to a position adjacent to the driven roller 43. The sub-guided wing unit 36 is inclined so as to gradually lower in the direction of the second guide chute 35.

The sorting objects placed on the second conveying belt 31 are sorted while passing through the second conveying belt sorting section B between the driven roller 43 and the driving roller 41 . The sorting objects smaller in size than the second sorting hole 33 pass through the second sorting hole 33, fall downward, and flow into the second guide chute 35, and sort out larger than the second sorting hole 33. The object continues to move along the second conveying belt 31 and then falls outside the second conveying belt 31 and enters the first guide chute 15.

When the section of the second conveying belt 31 positioned horizontally between the driven roller 43 and the driving roller 41 is referred to as the second conveying belt sorting section B, the size is larger than that of the second sorting hole 33. Most of the small sorting objects pass through the second sorting hole 33 in the initial section of the second conveying belt sorting section (B), fall to the sub guide vane 36, and flow into the second guide chute 35, After passing half of the 2-transfer belt sorting section (B), the sorting objects passing through the 2 sorting holes (33) fall to the main guide vane (37) and flow into the second guide chute (35).

Hereinafter, the sorting method using the reverse type sorter of the present invention described above will be briefly described.

The sorting objects mixed in various sizes are supplied to the primary sorting conveyor (10). Although not shown, a supply hopper may be installed at the front end of the primary sorting conveyor 10 to supply sorting objects to the first sorting conveyor 10. The sorting object supplied through the supply hopper is put into the starting position of the first transfer belt sorting section (A).

First, a first sorting step is performed to select a first group among the sorting objects discharged through the supply hopper.

When the sorting objects discharged through the supply hopper are sent to the first conveying belt 11, the sorting objects that are smaller than the first sorting hole 13 among the sorting objects placed on the first conveying belt 11 (2) (3) falls downward through the first sorting hole 11. And the sorting objects 1 remaining on the first conveying belt 11 move in the rotational direction of the first conveying belt 11, and pass through the position of the driving roller 21 to the first conveying belt 11. falls outside of The sorting objects falling outside the first transfer belt 11 are collected through a separate collection box, and the sorting objects 1 collected in this way are the sorting objects corresponding to the first group. The sorting objects 1 of the first group are larger than the first sorting hole 13 .

Next, a second sorting step is performed to select a second group among the sorting objects 2 and 3 that have passed through the first sorting hole 13 .

The sorting objects (2) and (3) passing through the first sorting hole (13) fall onto the second transfer belt (31). Among the sorting objects that have fallen through the second transfer belt 31 , sorting objects 3 smaller than the second sorting hole 31 fall downward through the second sorting hole 31 . And the sorting objects 2 remaining on the second conveying belt 31 move in the direction of rotation of the second conveying belt 31, and when passing through the position of the drive roller 41, the second conveying belt 31 falls outside of The sorting objects 2 falling outside the second conveying belt 31 are collected into a separate collection box through the first guide chute 15. The sorting objects 2 collected in this way are the sorting objects corresponding to the second group. The sorting objects 2 of the second group are sorting objects larger than the second sorting hole 33 . The selection objects 2 of the second group are smaller in size than the selection objects 1 of the first group.

In addition, the sorting objects 3 falling downward through the second sorting hole 33 are collected into a separate collection box through the second guide chute 35. The sorting objects 3 collected in this way are sorting objects corresponding to the third group. The sorting objects 3 of the third group are sorting objects smaller than the second sorting hole 33 . The sorting objects 3 of the third group are smaller in size than the sorting objects 2 of the second group.

In the above-described present invention, a selection object having the largest size is first selected, and then a selection object having a smaller size is selected. As described above, the present invention is provided with a plurality of sorting conveyors formed with sorting holes of different sizes, and arranges the sorting conveyor with large sorting holes outside and arranges the sorting conveyor with small sorting holes inside. It is possible to sort by order. Therefore, it is possible to minimize damage to the large-sized sorting object because it is a method of sorting the large-sized sorting object with high marketability first.

On the other hand, in the case of a sorting object having a similar size to the first sorting hole or the second sorting hole, it may not completely pass through the sorting hole and get stuck. In this state, when the transfer belt moves in the direction of the drive roller, the sorting object caught in the sorting hole collides with the drive roller and may be distorted and damaged.

In order to solve this problem, the present invention has a technical configuration for preventing the sorting object caught in the sorting hole of the transfer belt from contacting the roller in another embodiment.

Referring to FIGS. 3 and 4 , the first conveying belt 50 is provided with a perforated area portion 51 where the first sorting holes 53 are formed and both sides of the perforated area portion 51 have a constant width. and the first and second side area portions 55 and 57 in which the sorting holes 53 are not formed.

In the perforated area 51, first sorting holes 53 are formed at regular intervals. In addition, first and second side area portions 55 and 57 are formed on both left and right sides of the perforated area portion 51, respectively. For example, the first side area portion 55 is formed at one edge of the perforated area portion 51 and the second side area portion 57 is formed at the other edge of the perforated area portion 22 .

When the width of the first conveying belt 50 is 500 mm, the width of the first and second side areas 55 and 57 may be 30 mm, respectively, and the width of the perforated area 51 may be 440 mm. And, the width of the first sorting hole 53 may be 10 to 15 mm.

The first roller is formed to non-contact with the perforated area portion 51 . Accordingly, it is possible to prevent a sorting object caught in the first sorting hole 53 from being damaged by coming into contact with the first roller.

All of the first rollers installed inside the first conveying belt 51 may be formed to non-contact with the perforated area portion 51, or at least one roller may be formed to non-contact with the perforated area portion 51. In the illustrated example, the driving roller 60 does not come into contact with the perforated area 51 .

As an example of the structure of the driving roller 60, the first side roll 61 in contact with the first side area 55 and the second side area 57 positioned apart from the first side roll 61 ) and a second side roll 63 in contact with.

And, a reduced neck portion 65 is formed between the first side roll 61 and the second side roll 63 . One side of the reduced neck portion 65 is coupled to the side of the first side roll 61 and the other side is coupled to the side of the second side roll 63. Since the reduced diameter portion 65 is smaller than the diameters of the first and second side rolls 61 and 63, it does not come into contact with the inner surface of the perforated area portion 51 of the first transfer belt 50. Preferably, the separation distance between the outer circumferential surface of the reduced neck portion 65 and the inner surface of the first transfer belt 50 is greater than the width of the first sorting hole 53 .

Since the above-described drive roller 60 contacts only the inner surfaces of the first and second side area portions 55 and 57 and does not contact the perforated area portion 51 in which the first sorting hole 53 is formed, the first It is possible to prevent the sorting object 4 caught in the sorting hole 53 from being damaged in contact with the driving roller 60.

In order to prevent the first conveying belt 50 from moving out of position, a first protruding belt 56 and a second protruding belt 58 are formed side by side on the inner surface of the first conveying belt 50, and the first And the second side rolls 61 and 63 are provided with inlet grooves 62 and 64 into which the first and second protruding bands 56 and 58 are inserted.

The first protruding strip 56 is provided on the inner surface of the first side area portion 55, and the second protruding strip 58 is provided on the inner surface of the second side area portion 57.

The inlet grooves 62 and 64 are formed at the centers of the first and second side rolls 61 and 63, respectively. The inlet grooves 62 and 64 are formed to a predetermined depth along the circumferences of the first and second side rolls 61 and 63.

Although not shown, the driven roller and the pair of guide rollers may be formed in a cylindrical shape unlike the driving roller 60 . In this case, inlet grooves 62 and 64 into which the first and second protruding bands 56 and 58 are inserted are provided around both left and right edges of the driven roller and the pair of guide rollers, respectively.

Alternatively, the driven roller and the pair of guide rollers may have the same structure as the drive roller 60 .

Referring to FIG. 5 , as another example of the present invention, a center roll 67 may be further provided on the reduced neck portion 65 . The center roll 67 may be located in the center between the first side roll 61 and the second side roll 63. The center roll 67 prevents sagging of the first conveying belt.

To this end, the first conveying belt is further provided with a center area portion 54. The center area portion 54 is located between the first and second side area portions 55 and 57. In the center area portion 54, the first sorting holes 53 are not formed. The center area portion 54 is provided at a position corresponding to the center roll 67 . The center area portion 54 may be formed to have a width equal to or narrower than that of the first and second side area portions 55 and 57 .

The center area portion 54 is located at the center of the first conveying belt. Accordingly, the perforated area 51 is divided into two by the center area 54 . Perforated area portions 51 are formed on both left and right sides of the center area portion 54, and first and second side area portions 55 and 57 are formed at edges of each perforated area portion 51.

A center protruding strip 52 is formed on the inner surface of the center area portion 54 . In addition, the center roller 67 is provided with an inlet groove 68 into which the center protruding strip 52 is inserted. In addition, although not shown, an inlet groove into which the center protruding strip 52 is inserted is provided at the center of the driven roller and the pair of guide rollers.

And, as shown in FIG. 6 , a seat blocking raised portion 9 may be further formed on the outer surface of the center area portion 54 . The seat blocking raised portion 9 is located at the center of the center area portion 54 . The seat blocking raised portion 9 is formed to protrude outward from the outer surface of the center region portion 54 . Left and right sides of the seat blocking ridge 9 are formed inclined, and the upper end is rounded. Therefore, even if the object to be sorted falls into the seat blocking ridge (9), the object to be sorted rolls in the left and right directions of the seat and blocking ridge (9). In addition, even if it approaches the seating blocking ridge 9, which is a sorting object placed in the perforated area 51, it cannot rise above the seating blocking ridge 9.

It is possible to prevent a sorting object from being located in the center region portion 54 where the first sorting hole 53 is not formed by the seat blocking raised portion 9 .

Meanwhile, as another example of the present invention, the drive roller may have a structure in which the first guide roll and the second guide roll are separated.

Referring to FIG. 7 , the first guide roll 61 and the second guide roll 63 are separated from each other. Therefore, the first guide roll 61 and the second guide roll 63 rotate independently. To this end, sprockets to which chains are coupled are installed on the rotation shaft of the first guide roll 61 and the rotation shaft of the second guide roll 63, respectively.

Also, although not shown, the second conveying belt and the second rollers applied to the secondary sorting conveyor have the same structure as the first conveying belt and the first rollers shown in FIGS. 3 to 7 . That is, the second conveyance belt includes a perforated area portion having second sorting holes formed therein, and first and second side area portions provided to have a constant width on both sides of the perforated area portion and not having second sorting holes formed therein. A first protruding band is formed on an inner surface of the first side area portion, and a second protruding strip is formed on an inner surface of the second side area portion.

Among the second rollers, a driving roller includes a first side roll contacting the first side area and a second side roll spaced apart from the first side roll and contacting the second side area. The first and second side rolls are provided with inlet grooves into which the first and second protruding strips are inserted.

8 and 9, the present invention may further include a pushing means as another example.

Since the sorting object 4 moving while being caught in the first sorting hole 53 continues to rotate by the first transfer belt 50, there is no need to separate the sorting object 4 caught in the first sorting hole 53. there is. To this end, the present invention further includes a pushing means for removing the sorting object 4 caught in the first sorting hole 53 by pushing it from the inside to the outside of the first transfer belt 50 and removing it from the first sorting hole 53. can do.

An example of the pushing means is a separation roller 75 installed on the guide plate 17 of the first guide chute 15. The sorting object 4 passing through the driving roller 60 while being caught in the first sorting hole 53 of the first conveying belt 50 is separated from the first conveying belt 50 by the separating roller 75 fall downwards

Guide plates 17 are installed on the left and right sides of the first guide chute 15 to gather the falling objects to the center. A support bracket 71 is installed on the guide plate 17 extending downward from the drive roller 60, and a separation roller 75 is installed rotatably on the support bracket 71.

The outer circumferential surface of the separation roller 75 contacts the inner surface of the first conveying belt 50 . The length of the separation roller 75 is the same as the width of the perforated area 51 of the first conveying belt 50 . Since the diameter of the separating roller 75 is similar to the size of the sorting object, the sorting object 4 caught in the first sorting hole 53 can be separated without damage.

Of course, the above-described pushing means is also applied to the second sorting conveyor. That is, guide plates 37 are installed on the left and right sides of the second guide chute 35 to gather the falling objects to the center. A support bracket is installed on the guide plate 37 extending downward from the drive roller 81, and a separation roller 39 is installed rotatably on the support bracket.

The separation roller 39 of the secondary sorting conveyor pushes the sorting objects caught in the second sorting hole 93 from the inside to the outside of the second conveying belt 90 to take them out of the second sorting hole 93.

10 and 11 show an appearance of a reverse sorter capable of classifying objects into five groups according to their size.

10 and 11, the inverse sorter of the present invention is provided with a first sorting conveyor 10, a second sorting conveyor 30, a third sorting conveyor 100, and a fourth sorting conveyor 110. .

The second sorting conveyor 30 is installed inside the first conveying belt 11, the third sorting conveyor 100 is installed inside the second conveying belt 31, and the fourth sorting conveyor 110 It is installed inside the third conveying belt (101).

The size of each sorting hole gradually decreases in order from the first conveying belt 11 of the first sorting conveyor 10 to the fourth conveying belt 111 of the fourth sorting conveyor 110.

When the sorting objects are supplied to the first conveying belt 11, the sorting objects 1 larger than the first sorting hole 13 of the first conveying belt 11 move along the first conveying belt 11, The first group of sorting objects falling outside the first conveying belt 11 are collected, and among the sorting objects passing through the first sorting hole 13 of the first conveying belt 11, the second conveying belt 31 The sorting objects larger than the second sorting hole 33 move along the second conveying belt 31 and fall outside the second conveying belt 31, and the second group of sorting objects 2 are collected, and the second conveying Among the sorting objects passing through the second sorting hole 33 of the belt 31, the sorting object larger than the third sorting hole 103 of the third conveying belt 101 moves along the third conveying belt 101, The third group of sorted objects (3) falling outside the third conveying belt (101) is collected,

Among the sorting objects that have passed through the third sorting hole 33 of the third conveying belt 101, the sorting object larger than the fourth sorting hole 113 of the fourth conveying belt 111 passes through the fourth conveying belt 111. It moves along and falls outside the fourth conveying belt 111, and the sorting object 5 of the fourth group is collected, and the sorting object passing through the fourth sorting hole 113 of the fourth conveying belt 111 moves downward. The fifth group of objects 6 separated is collected.

In this way, the present invention can classify objects of sorting into several types of sizes by varying the number of sorting conveyors.

Another embodiment of the present invention is shown in FIGS. 12 to 14 . In FIG. 12, the arrow direction means the direction of rotation of the first conveying belt 50.

12 to 14, the primary sorting conveyor further includes a support frame 80 and a direction guide part 85.

Support frames 80 are installed on both left and right sides of the first conveying belt 50, respectively. The first rollers are rotatably supported on the support frame 80 . The support frame 80 is formed higher than the first transfer belt 50 .

The direction guide part 85 is installed on the left and right support frames 80, respectively, and moves the sorting object 1 rolling to the first and second side areas 55 and 57 in the direction of the perforated area part 51. play a guiding role.

In the first conveying belt 50 applied to the present invention, first and second side area portions 55 and 57 without first sorting holes 53 are located at both left and right edges. Therefore, when an object to be sorted is placed on the first and second side area portions 55 and 57, a problem of not being sorted may occur. In order to solve this problem, the present invention further includes a direction guidance guide unit 85. In particular, the direction guide part 85 is more useful because sorting objects having a round shape, such as blueberries, can be easily rolled on the first conveying belt 50.

The direction guide part 85 is installed on the support frame 80 so as to be spaced apart from the first conveying belt 50 and positioned above the first conveying belt 50 .

The direction guiding unit 85 is composed of a plurality of guide panels 87 . Two or more guide panels 87 are installed. In the illustrated example, four guide panels 87 are installed on each support frame 80 .

A plurality of guide panels 87 are continuously arranged in the front-rear direction. Guide panels 87 are fixed to the side of the support frame 80 . The guide panels 87 are positioned above the first and second side area portions 55 and 57. Accordingly, the guide panels 87 are not located in the perforated area 51 where the first sorting holes 53 are formed. The guide panel 87 is fixed to the support frame 80 so as to be spaced apart from the first conveying belt 50. At this time, the distance between the guide panel 87 and the first conveying belt 50 is smaller than the size of the sorting object.

Each guide panel 87 has a narrow front surface and a wide rear surface. That is, it is formed to gradually widen as it progresses in the rotational direction of the first conveying belt 50 . Accordingly, an inclined surface 89 inclined toward the inside of the first conveying belt 50 is formed on each guide panel 87 .

When the sorting object 1 rolls to the first or second side area portions 55 and 57 by the guide panel 87 of this structure, it is caught on the inclined surface 89 of the guide panel 87 and the inclined surface 89 It moves along and rolls toward the central part of the first conveying belt 50, that is, in the direction of the perforated area part 51. Although not shown, an elastic band for imparting elasticity may be attached to the inclined surface 89 of the guide panel 87 . The elastic band may be formed of highly elastic rubber or silicon material. The elastic band prevents damage to the sorting object colliding with the inclined surface and at the same time allows the sorting object colliding with the inclined surface to easily roll into the perforated area.

And, as shown in FIG. 15, each guide panel 91 may be formed with an inclined top. An upper portion of each guide panel 91 is formed to become lower toward the perforated area portion 51 . This is to allow the sorting object to roll toward the perforated area portion 51 without being placed on the guide panel 910 when the sorting object falls on the guide panel 91 .

The appearance of the pushing means according to another example of the present invention is shown in FIGS. 16 to 18.

Referring to FIGS. 16 to 18 , the illustrated drive rollers are located apart from the first side roll 61 in contact with the first side area portion 55 and the first side roll 61, and are located in the second side area. The second side roll 63 in contact with the part 57, the reduced diameter part 65 connecting the first side roll 61 and the second side roll 63, and the center installed in the reduced diameter part 65 A center roll 67 in contact with the area portion 54 is provided.

In addition, the pushing means 200 includes a cylindrical housing 201 detachably coupled to the reduced diameter 65 and a first sorting hole 53 formed to protrude from the outer circumferential surface of the housing 201 and passing through the driving roller. It is inserted into the first sorting hole 53 and is provided with push protrusions 205 that push the sorting object 4 stuck in the first sorting hole 53.

As for the housing 201, one is installed between the first side roll 61 and the center roll 67, and the other is installed between the second side roll 64 and the center roll 67.

The push protrusion 205 protrudes from the outer surface of the housing 201. The protruding length of the push protrusion 205 may be the same as the thickness of the first transport belt, or smaller or larger than the thickness of the first transport belt. The push protrusions 205 are formed at regular intervals on the outer surface of the housing 201 . The push protrusions 205 are inserted one by one into each of the first sorting holes 53 passing through the driving roller.

The push protrusion 205 is formed of an elastic material so as to be elastically deformable. For example, it may be formed of an elastic material such as silicone or rubber. The push protrusion 205 made of an elastic material does not interfere with the rotation of the first conveying belt even if it comes into contact with the first conveying belt, and does not damage the sorting object caught in the first sorting hole 53.

The diameter of the push protrusion 205 is smaller than that of the first sorting hole 53 . For example, the diameter of the push protrusion 205 may be formed to be 1/3 to 2/3 of the diameter of the first sorting hole 53 .

The end of the push protrusion 205 is preferably formed in a streamlined dome shape to facilitate insertion into the first sorting hole 53 and at the same time prevent damage to the sorting object.

When the driving roller rotates, the housing 201 rotates together, and accordingly, the push protrusions 205 are sequentially inserted into the first sorting holes 53 passing through the driving roller, and the sorting between the first sorting holes 53 The object (4) is pushed outward. Therefore, the sorting object 4 can be effectively separated from the first sorting hole 53 .

In the above, the present invention has been described with reference to the embodiments shown in the drawings, but these are only examples, and those skilled in the art will understand that various modifications and equivalent embodiments are possible therefrom. Therefore, the true protection scope of the present invention should be defined only by the appended claims.

10: 1st sorting conveyor 11: 1st transfer belt
13: first sorting hole 21: drive roller 23: driven roller 30: second sorting conveyor
31: 2nd transfer belt 33: 2nd sorting hole

Claims (4)

A first conveyance belt having a first sorting hole for passing sorting objects of a certain size or less among sorting objects, and a plurality of supports supporting the first conveying belt so that the first conveying belt can rotate while forming an endless track. A primary sorting conveyor including first rollers of;
Installed on the inside of the first transfer belt, a second sorting hole smaller than the first sorting hole is formed to pass sorting objects of a certain size or less among the sorting objects that have passed through the first sorting hole, and the first sorting hole is formed. A second sorting conveyor including a second conveying belt shorter than the belt and a plurality of second rollers supporting the second conveying belt so that the second conveying belt can rotate while forming an endless track;
A first guide chute installed on the inside of the first conveying belt to be located outside the second conveying belt and for collecting sorting objects larger than the second sorting hole among the sorting objects passing through the first sorting hole and;
A main guide formed on one side of the first guide chute to receive the sorted objects that have passed through the first sorting hole and fall into the area where the second transfer belt is not located and move them in the direction of the first guide chute. wing parts;
Among the sorting objects that passed through the first sorting hole, after falling onto the second conveying belt, the sorting object that moved while being caught in the second sorting hole, got out of the second sorting hole, and fell outside the second conveying belt. a sub-guided wing part formed on the other side of the first guide chute to receive and move it in the direction of the first guide chute;
A second guide chute installed inside the second transfer belt to collect the sorting objects that have passed through the second sorting hole;
In order to prevent a sorting object caught in the first sorting hole among the sorting objects from being damaged by contact with the first roller, at least one of the first rollers is formed so as not to contact the first sorting hole,
The first conveying belt includes a perforated area portion having the first sorting hole, first and second side area portions provided to have a predetermined width on both sides of the perforated area portion, and having no first sorting hole formed thereon; A center area portion located between the first and second side area portions to separate the perforated area portion into two and having the first sorting hole unformed, and a seat blocking ridge formed to protrude from the outer surface of the center area portion, ,
The first roller includes a first side roll in contact with the first side area portion, a second side roll spaced apart from the first side roll and in contact with the second side area portion, and one side of the first side roll in contact with the first side area portion. A reduced diameter portion coupled to the side roll and the other side coupled to the second side roll and formed with a smaller diameter than the diameters of the first and second side rolls, and installed in the reduced diameter portion between the first and second side rolls A reverse sorter for sorting in order from large to small, characterized in that it has a center roll positioned and in contact with the center area portion. delete The method of claim 1, further comprising a pushing means for removing the sorting object caught in the first sorting hole by pushing it outward from the inside of the first conveying belt, and removing it from the first sorting hole,
The pushing means is formed to protrude from a cylindrical housing rotatably installed inside the first conveying belt and the outer circumferential surface of the housing and is inserted into each of the first sorting holes passing through the first roller, Reverse type sorter for sorting in order from large to small, characterized in that it has push protrusions that push the sorting object caught in the hole. The method of claim 1, wherein the primary sorting conveyor has a support frame installed on both left and right sides of the first conveying belt to support the first rollers, and is spaced apart from the conveying belt and positioned above the first conveying belt. It is installed on the support frame and further includes a direction guide part for guiding the sorting object rolling into the first and second side areas toward the perforated area. Inverse sorter.

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