JPH11128850A - Bottle sorter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate possible rejection errors by simplifying piping for supplying air to air ejection nozzles for rejection, lessening pressure drop and making it possible to easy carry out the installation work of the air ejection nozzles. SOLUTION: The plural air ejection nozzles 34 for rejection of the number corresponding to the kinds of the bottles to be sorted varying in colors are arranged along a transporting route on one side of the transporting route of a bottle transporting conveyor 14 in such a manner that their respective ejection ports face above the transporting route. Air conduits 33 of a prescribed length are so arranged as to extend successively through the points where the air ejection nozzles 34 are arranged. The air ejection nozzles 34 are mounted at the peripheral walls of the air conduits 33 so as to be communicated with the inside of the air conduits 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sorting apparatus for sorting, for example, glass bottles by color in the field of packaging container recycling.

[0002]

2. Description of the Related Art Heretofore, trash that has not been discarded but has been burned has been discarded in landfills. However, since the useful life of garbage landfills in Japan is only a few years, it is necessary to reduce the amount of garbage by actively sorting and collecting resources that can be recycled for recycling. (Three types of glass bottles and PET bottles are subject to the obligation of companies to recycle products under the Containers and Packaging Recycling Law that came into effect in April this year.) Currently, what is collected as recycled resources is ,
Examples include iron, aluminum, glass, plastic (including PET bottles), and paper. Among them, glass bottles are targeted to contain 55% or more recycled materials under the guidance of the Ministry of International Trade and Industry. For this reason, glass bottles are being collected at recycling facilities around the country. In order to recycle the glass bottles, it was necessary to collect them in different colors, and manual sorting and collection were the mainstream. However, automatic color sorting equipment began to be introduced from one to two years ago.

The automatic color sorting apparatus performs image processing of bottles being conveyed by a conveyor, and bottles that have been subjected to color sorting are rejected for each color from the conveyor.

Conventionally, a sorting apparatus for bottle reject as shown in FIG. 3 is known. Four reject air ejection nozzles 52 are arranged along one side of the transport path of the bottle transport conveyor 51. Each air jet nozzle
Reference numeral 52 denotes a substantially L-shaped injection hole pipe 55 which is mounted laterally on the conveyor frame 54 by a bracket 53. The tip of the injection hole pipe 55 faces above the transport path. Each of the air ejection nozzles 52 is provided with a solenoid valve 56, and an air supply hose 57 is piped to each of them. A lead wire 58 is wired to each solenoid valve 56. The air supply hose 57 and the lead wire 58 are
Has been led together.

[0005]

The above-mentioned conventional apparatus has the following problems.

(1) The number of air supply hoses 57 has increased, and a case 59 has been required to collect them.

(2) The air supply hose 57 is generally thin and long, the number of passages through the branch pipe is increased, the pressure loss is increased, and continuous rejection is performed (4 to 5 times / second).
Continued, the air pressure and the amount of ejected air decreased and decreased, and the bottle could not be rejected.

(3) If the bottle could not be rejected, the bottle is moved from above the conveyor 51 to the adjacent air ejection nozzle 52.
It may fall through the gap, and it is necessary to provide a bottle drop prevention wall to prevent this.

(4) Air jet nozzle 52, bracket 53,
Installation of the case 59 and the bottle fall prevention wall was troublesome.

The object of the present invention is: An object of the present invention is to provide a bottle sorting apparatus that solves the above problems.

[0011]

A bottle sorting apparatus according to the present invention comprises a plurality of reject air jets corresponding to the types of bottles having different colors to be sorted on one side of a transport path of a bottle transport conveyor. In a bottle sorting device in which the nozzles are arranged along the transport path so that the respective ejection ports face the upper side of the transport path, an air conduit of a required length determines the location of the air ejection nozzle. The air jet nozzles are arranged so as to extend in order through the air duct, and the air ejection nozzle is mounted on the peripheral wall of the air duct so as to communicate with the inside of the air duct.

In the bottle sorting apparatus according to the present invention, the air conduit of a required length is disposed so as to extend sequentially through the location of the air discharge nozzle, and the air discharge nozzle is provided on the peripheral wall of the air conduit. Since it is mounted so as to communicate with the inside of the conduit, since a plurality of air ejection nozzles are mounted on one air conduit, piping for supplying air to the nozzle is also simple and has low pressure loss. Therefore, the installation work of the air ejection nozzle is simple, and there is no fear of rejection mistake.

When the air conduit has a volume capable of performing the function of a pressure accumulation air tank, there is no reject error due to a decrease in the pressure of the air supply pipe.

If the air conduit is arranged at a level that can prevent the bottle from dropping from the transport path, there is no fear that the bottle will fall from the conveyor.

[0015]

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

Referring to FIG. 1, there is shown a rear end portion and a rear portion of a transport path of a small bottle size sorting conveyor 11 and a medium / large bottle size sorting conveyor 12 extending forward at a predetermined distance from each other.

A small bottle color sorting conveyor 13 is connected to the rear end of the transport path of the small bottle size sorting conveyor 11, and a medium / large bottle color sorting conveyor 14 is connected to the rear end of the medium / large bottle size sorting conveyor 12. Have been. At the rear end of the small bottle color sorting conveyor 13 and the medium / large bottle color sorting conveyor 14 on the transport path, color sorting devices 15 and 16 are arranged, respectively. A black bottle collection chute 21, a tea bottle collection chute 22, and a black bottle collection chute 21 are provided between the conveyance paths of the small bottle color selection conveyor 13 and the middle / large bottle color selection conveyor 14 behind the color separation devices 15 and 16.
Blue-green bottle collection chute 23 and transparent bottle collection chute 24
Are installed sequentially from the rear to the front. At the front end of the transport path of the small bottle color sorting conveyor 13 and the medium / large bottle color sorting conveyor 14, a residue collecting chute 25 is provided over these. A small bottle air rejector device 26 is arranged at the left edge of the transport path of the small bottle color sorting conveyor 13, and a medium / large bottle air rejector device 27 is arranged at the right edge of the transport route of the middle and large bottle color sorting conveyor 14. I have.

FIG. 2 shows the air rejector device 27 for a medium / large bottle in detail. Although not shown in detail, the small bottle air rejector device 27 is the same as the middle and large bottle air rejector device 27, although the left and right directions are different.

Air rejector device 27 for medium and large bottles
A two-sided closed horizontal steel pipe air conduit 33 extending along the right side frame 31 of the medium and large bottle color sorting conveyor and attached by a bracket 32, and four air jets attached to the air conduit 33 in a line. The nozzle 34 is provided.

The air conduit 33 is connected to an air ejection nozzle 34 at the rear end.
It protrudes further rearward, and protrudes forward from the air ejection nozzle 34 at the front end. The lower end of the air conduit 33 is substantially at the same level as the transport path of the medium / large bottle color sorting conveyor 14. A compressed air supply hose 35 is connected to a rear end wall of the air conduit 33. 4 on the peripheral wall of the air conduit 33
Four left communication holes 36 are formed corresponding to the three air ejection nozzles 34.

The air ejection nozzle 34 includes a solenoid valve 41 and has a left ejection pipe 42 and a right supply port 43.
The air ejection nozzle 34 is directly attached to the air conduit 33 so that the supply port 43 is connected to the communication hole 36. Spout tube
The front end of 42 faces the upper side of the transport path of the medium / large bottle color sorting conveyor 14 in a state facing left. The height from the transport path of the medium / large bottle color sorting conveyor 14 to the tip of the ejection pipe 42 corresponds to a distance slightly larger than the radius of the bottle transported on the middle / large bottle color sorting conveyor 14. A lead wire 44 is wired to the solenoid valve 41. The lead wires 44 are led into a rectangular cylindrical case 45 provided below and parallel to the air conduit 33 and are united. Since the air conduit 33 is located at a position higher than the transport path of the medium / large bottle color sorting conveyor 14, there is no fear that the bottle falls from the same path to the air ejection nozzle 34 side. Therefore, no bottle drop prevention measures are required.

The diameter of the air conduit 33 is sufficiently larger than the diameter of the ejection pipe 42 of the air ejection nozzle 34, and has a volume capable of performing the function of a pressure accumulation air tank. As a result, even if the number of times of bottle rejection increases, direct ejection from the accumulator air tank occurs, the amount of pressure reduction is small, and the rejection force does not decrease.

Since air is supplied to the air conduit 33 by a single hose 35 and there is no part such as a branch pipe which increases the pressure loss, the reduced pressure of the air due to the bottle rejection causes the supply interval of the bottle to be slightly longer. When this occurs, sufficient air supply and pressure recovery are performed.

The air ejection nozzle 34 is attached by the conveyor frame 31 by the air conduit 33, and the number of members for attaching the air ejection nozzle 34 is small.

[0025]

According to the present invention, since a plurality of air ejection nozzles are attached to one air conduit, the piping for supplying air to the nozzles is simple and the pressure loss is small, so that the air ejection nozzle is provided. Installation work is easy,
No worries about rejection mistakes.

[Brief description of the drawings]

FIG. 1 is a plan view of a bottle sorting apparatus according to the present invention.

FIG. 2 is a perspective view showing a main part of the device.

FIG. 3 is a perspective view corresponding to FIG. 2 showing a conventional example.

[Explanation of symbols]

 13 Small bottle color sorting conveyor 14 Medium and large bottle color sorting conveyor 33 Air conduit 34 Air jet nozzle

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Noboru Takahashi 5-28, Nishikujo, Konohana-ku, Osaka-shi Inside Hitachi Zosen Corporation (72) Inventor Junichi Yamamoto 5-28, Nishikujo, Konohana-ku, Osaka-shi Hitachi Shipbuilding Co., Ltd.

Claims (3)

[Claims] 1. One side of a bottle feeding conveyor on a conveying path,
A plurality of reject air ejection nozzles of a number corresponding to the types of bottles to be sorted having different colors are arranged along the same conveyance path so that each ejection port faces above the same conveyance path. In the bottle sorting apparatus, an air conduit of a required length is arranged so as to extend sequentially through the location of the air ejection nozzle, and the air ejection nozzle communicates with the inside of the air conduit on the peripheral wall of the air conduit. A bottle sorting device, which is attached to a bottle. 2. The bottle sorting apparatus according to claim 1, wherein the air conduit has a volume capable of performing the function of a pressure accumulation air tank. 3. The bottle sorting apparatus according to claim 1, wherein the air conduit is disposed at a level that prevents the bottle from dropping from the transport path.