JPS6216223Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a sorting device for fruits such as tomatoes and melons.

[Conventional technology]

Conventional fruit sorting devices include, for example, a belt made of rubber cloth with many round holes and a number of cylinders made of vinyl chloride arranged in a direction perpendicular to the transport method of the objects to be sorted (hereinafter referred to as fruits). There is a rotating sieve type that rotates. Approximately five types of rubber cloth belts are used, each having a different diameter of the circular holes used as openings, and are arranged in series from the smallest opening to the largest one. When fruit is introduced from the side with the smaller opening, the fruit is carried by the rotation of the rubber cloth belt or cylinder and falls at the opening corresponding to the size of the fruit, and is sorted.

[Problem that the invention attempts to solve]

However, in such a conventional sorting device, a large number of round holes are drilled in the belt surface of the rubber cloth belt and are distributed in a planar manner. Or, because the fruits were transported by being suspended in the openings, the fruits transported on the belt surface may pass through the opening area corresponding to the size of the fruit, resulting in poor sorting accuracy. There was a problem. In addition, since the large number of fruits that are thrown in are usually deformed to some extent, the rubber cloth belt or vinyl chloride cylinder is rotated flat not only in the transport direction but also in the lateral direction so that they collide with each other. Since the fruits are transferred and sorted while they fit together, there are problems in that the transfer efficiency is poor and the fruits are easily damaged.

[Means for solving problems]

The present invention was made in order to eliminate the drawbacks of the conventional sorting apparatus described above.The present invention was made in order to eliminate the drawbacks of the conventional sorting apparatus. The body is suspended horizontally and rotated in opposite directions by a drive device on a base, and both the cylindrical bodies are formed with substantially helical protrusions in the opposite direction to the rotating direction, and the pair of opposing helical bodies A roughly rectangular opening is formed at the interval with shaped protrusions,
The objects to be sorted, which are brought in from upstream and are driven and transferred, are dropped and classified through the openings.

〔Example〕

This invention will be explained below based on the drawings.

1 to 8 are diagrams showing embodiments of this invention. To explain the configuration, reference numeral 1 in FIGS. 1 and 2 is an angle frame, and on the right side of the frame 1 in the figure, a sorting section _U1 , which is the main body of this device, is arranged. A polishing feeder _U2 is attached to the fruit input side relative to ₁ .

First, the sorting section _U1 will be described. A pair of cylindrical bodies 2, 3 are mounted _in this sorting section U1 almost horizontally, and flared at the ends so that a long hole-like gap 4 of a required width is formed between the cylindrical bodies 2, 3. Both cylindrical bodies 2, 3 are polyvinyl chloride pipes with a diameter of about 120 mm, and sponge rubber of an appropriate thickness is attached to their peripheral surfaces. Support shafts 2a, 3a protrude from each end of the cylindrical bodies 2, 3, and these support shafts 2a, 3a support bearings 5,
The bearings 5, 6, 7, and 8 are rotatably attached to the stand 1 via the bearings 5, 6, 7, and 8. The bearings 5, 6 located on the side where the objects to be sorted are input (upstream side) are movable in a substantially horizontal plane relative to the stand 1, and the bearings 7, 8 on the other end side, i.e., the downstream end side, are fitted with bolts 9, 9 in elongated holes 7a, 7a drilled in the bearings 7 as shown in FIG.
are inserted through the base 1 and fastened to the base 1.

Although FIG. 3 shows the bearing on the side of numeral 7, the bearing on the side of numeral 8 is also constructed in the same manner as described above. Due to this mounting manner of the bearings 7, 8, both the cylindrical bodies 2, 3 have their other ends widened within the range of the drilling length of the elongated holes 7a, 7a...
The interval can be adjusted. Each of the cylindrical bodies 2 and 3 has a gap 4 as shown in FIG.
When a fruit 11 is placed on the fruit 11, the fruit 11 is rotated in opposite directions by a drive mechanism to be described later in order to levitate the fruit 11.

Further, on the circumferential surfaces of both cylindrical bodies 2 and 3, substantially helical protrusions 12 and 1 are provided in the respective rotational and reverse winding directions.
3 are symmetrically wound. In addition, to specifically explain the substantially helical protrusions 12 and 13, the protrusions of the same lead are not formed on the surfaces of the cylindrical bodies 2 and 3, but as shown in FIG. A flange-shaped portion 1 protruding perpendicularly to the axis of the
2a, 13a, and feeding portions 12b, 13b formed to protrude obliquely toward the feeding direction.
Further, the substantially helical protrusions 12 and 13 have a square cross section of about 20 mm square, and at least their surfaces are made of sponge rubber, similar to the peripheral surfaces of the cylindrical bodies 2 and 3. . and a pair of substantially helical protrusions 12 wound symmetrically,
13 adjacent and opposing protrusions and the gap 4
and square openings 4a, 4b, 4, respectively.
c and 4d are formed, and these openings are connected in the axial direction of the cylindrical bodies 2 and 3.

Furthermore, the entire pair of substantially helical protrusions 12, 13 are divided into four sections A, B, C, as shown in FIG.
D, and each divided section A, B,
A plurality of openings are provided in each of C and D. The number of openings in each division is, for example, 4 in A, 3 in B, 2 in C, and D.
There are two sections, and the number of openings in each section gradually decreases from the fruit input side (upstream side) to the downstream side.

On the other hand, the winding pitch of the approximately helical protrusions 12 and 13, in other words, the interval between two adjacent protrusions, is adjusted to gradually increase from the A section side to the D section side. and the intervals between the protrusions in the same division are the same. To give a numerical example, the interval between the protrusions is 50 in A category.
mm, 60mm in B category, 70mm in C category, 80mm in D category
It's like this. Therefore, the opening area of each opening is configured to become larger in each section from the A section side to the D section side. To describe an example of the size of the opening in category A, the length of the gap 4 on the fruit input side is approximately 70 mm, so the size of the opening 4a is approximately 50 mm x 70 mm.

Further, below the cylinder bodies 2 and 3, each section A, B,
Shutes 14a and 14 are installed from the bottom of the gap 4 toward one side (downward in FIG. 2) for each of C and D, respectively.
b, 14c, and 14d are installed in an inclined manner.
There is also a chute 1 at the end of the other end where the gap 4 extends.
4e is attached, and this attached portion is classified as E category. Sponge rubber of an appropriate thickness is adhered to the fruit falling surface of each of the chute 14a to 14e.

Fruits with larger outer dimensions are sorted sequentially from the A section side to the D section side, and the fruits with the largest outer dimensions that fall and do not fall in the openings 4a to 4d of each section A to D are sorted. is the rearmost chute 14e
It is classified into five ways in total.

Furthermore, rollers 15 and 16 for regulating the protrusion of the cylindrical bodies are disposed at appropriate upper positions on each of the cylindrical bodies 2 and 3, substantially parallel to the cylindrical bodies 2 and 3. Both protrusion regulating rollers 15 and 16 are rotatably supported by the pedestal 1 via appropriate bearing members, and the rotation of the respective cylindrical bodies 2 and 3 is controlled by a drive mechanism described later as shown in FIG. rotated in the same direction as the direction. 17a and 17b are covers each having a hook-shaped cross section.

Next, the polishing feed section _U2 will be explained.

On the polishing feed section _U2 side, the pedestal 1a is the sorting section.
It is formed one step higher than that of _U1 , and is arranged at a position one step higher than the polishing feed section _U2 side sorting section _U1 .

As shown in FIG. 5, in the polishing feed section _U2 , two rotary brushes 17, 18 and one feed roller 19 are rotatably attached to each vertex of an approximately inverted triangle. A channel-shaped feed path 21 is formed by the rotating brushes 17 and 18 and the feed roller 19. A spiral protrusion 22 is wound around the feed roller 19 at a pitch. This spiral protrusion 22 is only for feeding fruit, so
The winding pitch is an appropriate pitch larger than the maximum winding pitch of the D section in the sorting section _U1 . The peripheral surface of the feed roller 19 and the spiral protrusion 22 are provided with cylindrical bodies 2 and 3 on the side of the sorting section _U1 .
Sponge rubber is attached like the peripheral surface etc. 23, 23 are covers.

A fruit inlet 24 is opened at the fruit inlet end (left end in FIG. ₂ ) of the polishing feeding section U2. Sponge rubber of an appropriate thickness is also adhered to the inner surface of the fruit inlet 24. Further, a communication chute 25 is provided between the polishing feed section _U2 and the sorting section _U1 .

Next, the drive mechanism will be explained with reference to FIGS. 6 and 7.

The drive mechanism is disposed on the frame 1a (Fig. 1) below the polishing feed section _U2 , and includes one motor M and a plurality of drive shafts, gears, and sprockets (in this specification, gears and sprockets are referred to as gears and sprockets). (hereinafter referred to as gears), a chain belt, etc. The output shaft 26 of the motor M fixed to the frame 1a is connected to the first drive shaft _S1 via the first gear _G1 , the first chain belt _V1 , and the second gear _G2 , and the first A drive shaft S ₁ is connected to a second drive shaft S ₂ via third and fourth gears G ₃ and G ₄ . Therefore, the first drive shaft _S1 and the second drive shaft _S2 are the sixth drive shaft S1 and the second drive shaft S2.
As shown in the figure, they rotate in opposite directions. The first drive shaft S ₁ is connected to one cylindrical body 2 via the fifth gear G ₅ , the second chain belt V ₂ , and the sixth gear G ₆ , and the common second chain belt V ₂ and the seventh It is connected to the protrusion regulating roller 15 via a gear _G7 . On the other hand, the second drive shaft S ₂ is connected to the other cylindrical body 3 via the eighth gear G ₈ , the third chain belt V ₂ , and the ninth gear G ₉ , and is further connected to the 10th gear G ₁₀ and the fourth chain belt _V4
and is connected to the protrusion regulating roller 16 via the eleventh gear _G11 . In addition, the second drive shaft S ₂
is the common 3rd chain belt V ₃ and 12th gear
G ₁₂ is the feed roller in the polishing feed section U ₂ . Also, on the back side of the first shaft S ₁ are the 13th and 1st shafts.
14, two gears G ₁₃ and G ₁₄ are fixed, and the 13th gear
G ₁₃ is connected to one rotating brush 17 via the 5th chain belt and the 15th gear G ₁₅ , and the 14th gear G ₁₄ is connected to the other rotation via the 6th chain belt V ₆ and the 16th gear G ₁₆ . It is connected to ke 18. Both rotating brushes 17, 18 are thus rotated in the same direction by the first drive shaft _S1 as described above.

As mentioned above, in the sorting device according to this invention, the sorting section U ₁ , the polishing feed section U ₂ and the drive mechanism are arranged on the pedestal 1,
Mounts 1 and 1a are installed so as to be integrated on 1a.
It is made movable as a whole by casters 28 attached to the lower surface.

Next, the sorting operation and effect will be explained.

When fruits 11 such as tomatoes are sequentially introduced into the fruit input port 24, the fruits 11 are first aligned and transported within the feed path 21 by the spiral protrusions 22 of the feed roller 19 in the polished feed section _U2 . During this transport process, the surfaces are polished by the rotary brushes 11 and 18, and the materials are sequentially introduced into the sorting section _U1 from the communication chute 25. In the sorting section U ₁ , the fruit 11 is
While aligned in the gap 4, as shown in FIG. 8, the cylindrical bodies 2, 3 are floated by the outer rotation, and the approximately helical protrusions 12, 13 are moved downstream of the feed section (FIG. 8). (to the right). This approximately helical protrusion 1
The transfer is performed accurately and efficiently by driving the sending portions 2 and 13. In this way fruit 11
In the process of being transferred from category A to category B, the particles fall under their own weight at the corresponding opening area, or in other words, at the location of the corresponding category, and are taken out from the chute and classified. The transport path of the fruits 11 in the sorting section U ₁ is a channel-shaped gap 4 formed by both the cylindrical bodies 2 and 3, and has an opening 4a.
4d are connected to the gap 4, so that the fruits 11 do not bypass the openings of the corresponding opening area, and are sorted and classified with high efficiency and good sorting accuracy.

In addition, since the number of openings 4a and 4b in the A and B divisions on the first sorting stage side is larger than in the latter divisions, even when large and small fruits 11 are transferred in a dense state, the openings 4a and 4b are large. Fruits 11 corresponding to the openings 4a and 4b fall and are sorted at the openings with high accuracy. Therefore, in this respect as well, efforts are being made to improve the sorting accuracy.

Furthermore, in such a sorting process, the peripheral surfaces of the cylindrical bodies 2 and 3 and the approximately helical convex strip 1 are removed.
2 and 13 have sponge rubber attached, so
Coupled with the aligned transfer, damage to the fruit 11 is prevented. Further, the fruit 11 is transported while being made to float due to the rotation of the cylindrical bodies 2 and 3. Even if the fruit 11 tends to fly out to the outside due to some kind of force due to this rotation, the rotating rollers 15, At 16, it is repelled back toward the gap 4 side, and its protrusion is regulated. If the type of fruit to be sorted is different and you want to change the classification criteria, tighten the bolts 9 of both bearings 7 and 8 on the other end and drill the long holes 7a. The extent to which the other ends of both cylindrical bodies 2 and 3 expand is adjusted within the length range. At this time, the gap 4 widens (or narrows) at the other end, and the opening area of the openings differs even within the same section, but the difference is small, and on average for each section. It can be assumed that the opening area becomes large (or small) in

[Effect of idea]

Since the present invention has the above-mentioned configuration, the objects to be sorted are transferred from upstream to downstream by the substantially helical protrusions of both cylindrical bodies, and in the process of transfer, the objects to be sorted are transported in a manner that corresponds to the external dimensions of the objects to be sorted. Since the particles fall under their own weight due to the opening area, the accuracy of sorting by classification is greatly improved. Further, since the objects to be sorted that have been introduced are transferred through the gap in a substantially aligned state, the objects to be sorted do not collide with each other, and there is also an effect that almost no damage is caused.

[Brief explanation of the drawing]

Figures 1 to 8 show an embodiment of the sorting device according to this invention, in which Figure 1 is a side view, Figure 2 is a partially cutaway plan view, and Figure 3 is a cylinder in Figure 2. 4 is a sectional view taken along the line -- in FIG. 1, FIG. 5 is a sectional view taken along the line -- in _FIG . The figure is a _Y2 arrow view of the same drive mechanism as above.
FIG. 8 is a partial plan view for explaining the operation. 1, 1a... mount, 2, 3... cylindrical body, 4...
Gap portion, 4a to 4d...Mesh opening, 5, 6, 7, 8
... Bearing, 7a ... Long hole, 9 ... Bolt, 11
...Fruit (object to be sorted), 12, 13...Substantially helical convex stripes, 14a to 14e...Shoot, 15,
16... Protrusion regulating roller, 17, 18... Rotating brush, 19... Feed roller, 21... Feed path,
22...Spiral convex stripe, 24...Fruit inlet,
25... Contact shoot, A, B, C, D, E...
Classification, M... Motor, U ₁ ... Sorting section, U ₂ ... Polishing feed section.

Claims (1)

[Claims for Utility Model Registration] 1. A pair of cylindrical bodies rotating in opposite directions for transporting objects to be sorted, which are hung horizontally on a pedestal horizontally with a gap of a required width and widened toward the end; a drive mechanism that rotates the cylindrical bodies, and the pair of cylindrical bodies have a flange-like part that projects perpendicularly to the axis, and a feeding part that projects obliquely toward the transfer direction. Approximately helical protrusions in opposite directions are formed by winding symmetrically, and the protrusions facing each other on the pair of cylindrical bodies form an approximately rectangular opening in the gap that gradually increases from upstream to downstream. A sorting device characterized by having a series of . 2. A pair of symmetrically wound helical protrusions are each divided into a plurality of required sections, and the winding pitch of the helical protrusions in each section is the same pitch as described in Claim 1 of the Utility Model Registration Claim. sorting equipment. 3. The sorting device according to claim 1, wherein both cylindrical bodies are supported on the upstream or downstream side so that their divergent angles can be adjusted. 4. The sorting device according to claim 1 or 2, wherein the peripheral surface portions of both cylindrical bodies and at least the surface portions of the helical protrusions are made of sponge rubber. 5. The sorting device according to claim 1 or 3, wherein a protrusion regulating roller is disposed approximately parallel to each of the cylindrical bodies at an appropriate upper position.