CN113369174A

CN113369174A - Assembly is retrieved in sorting that becomes more meticulous of abandonment plastic bottle

Info

Publication number: CN113369174A
Application number: CN202110835980.7A
Authority: CN
Inventors: 曹卫东; 许燕锋
Original assignee: Taichu Huansu Technology Zhejiang Co ltd
Current assignee: Taichu Huansu Technology Zhejiang Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2021-09-10

Abstract

The invention discloses a refined sorting and recycling assembly of waste plastic bottles, which comprises the following components in sequence according to the front-back sequencing: the abnormal specification screening device comprises a screening conveying line for conveying the waste plastic bottles, a screening mechanism arranged on the screening conveying line and an abnormal specification collecting line; the multi-stage arrangement conveying device comprises a plurality of plane arrangement conveying mechanisms which are connected end to end from front to back; the identification and classification device comprises an identification and classification conveying line for conveying waste gas plastic bottles, wherein the identification and classification conveying line is provided with a line scanning infrared camera and a line scanning camera; the sorting device comprises a sorting conveying line for conveying the waste plastic bottles, and a plurality of sorting stations which are arranged along the sorting conveying line and correspond to different final classifications. The invention has the beneficial effects of improving the sorting and recycling efficiency and the refinement degree.

Description

Assembly is retrieved in sorting that becomes more meticulous of abandonment plastic bottle

Technical Field

The invention relates to a sorting and recycling assembly, in particular to a fine sorting and recycling assembly for waste plastic bottles.

Background

With the continuous enhancement of garbage classification and environmental protection consciousness, governments of various countries have vigorously introduced policies and regulations related to garbage classification and resource recycling, and various international and domestic brands with social influence are promoted, and rows advocating the use or partial use of recycled materials to replace the primary materials to produce product packages are added in various ways, so that the quality control of the safety, sanitation and the like of the produced products by brand merchants is realized, and the selection and use of the recycled materials are strictly referred to the quality standard of the primary raw materials. Original traditional plastic bottle regeneration industry, because history, market, field management, raw materials characteristics and technical reason itself, mostly be in the design of reduce cost's thinking, practitioner and enterprise, mostly be individual, individual industrial and commercial company and little enterprise, mostly adopt weighbridge, carry out simple physical weighing to the supplied materials, it is artifical, rely on the experience to retrieve the plastic bottle and carry out simple material classification, the categorised accounting of colour, and utilize simple mechanical transmission, compression equipment, classify compression packing operation. There are the following problems:

the unified recovery standard is lacked, and the transaction disputes are many;

because the recycled plastic bottles carry residues and carry a large amount of sundries in the recycling process and the diversity and complexity of packaging materials, the recycling process is difficult to price and has many disputes due to the lack of uniform standard and reasonable goods inspection means;

the automation degree is low, the operation scene is large, the labor force and the transportation and storage cost are high, the site is disordered, and the pressure of safety and environmental protection is high;

the plastic bottles are recycled by a plurality of varieties, complex materials, large in size, large in plastic quantity and light in weight (about 4 ten thousand for 1 ton of beverage bottles), manual packing operation is mostly carried out by semi-mechanical conveying belts, packing machines and other equipment at present, an operation yard is large, and the transportation and recycling cost is increased. Due to the reason, the operation site is disordered, and peculiar smell and equipment noise caused by the garbage and residues carried by the operation site are brought to the safety of operation workers and the environmental protection of the site.

The method has the advantages of difficult accurate classification, no quality guarantee, high separation cost and low recovery added value;

due to the lack of equipment for automatically classifying and sorting original bottles (which are not flattened), skilled workers are mostly adopted to manually classify the bottles by experience, and serious hidden quality troubles are caused due to the complexity of recycling plastic bottles and the instability of manual sorting, so that the development of high-quality utilization of downstream production enterprises is hindered. Particularly, food grade and non-food grade can not be effectively distinguished, and great obstacles are caused to the policy of applying recycled plastics to food packaging in China in the future. The automatic spectrum sorting machine for recycling the industrial beverage bottles in the market at present can only adapt to color and material sorting of plastic bottles after flattening and label removal, and can not identify and sort recycled plastic bottles with different brands and different aging degrees, and recycled plastic bottles with the same materials and recycled plastic bottles in cities.

Because of the traditional production mode of plastic bottle recovery, it is difficult to carry out effective inventory to the on-site goods, causes the financial affairs confusion of the recovery enterprise, is difficult to pass the examination and verification of the relevant renewable resource tax preferential policy conditions of the country, and has larger tax illegal risks.

Disclosure of Invention

The invention aims to provide a refined sorting and recycling assembly of waste plastic bottles, and improve the efficiency and the refinement degree of sorting and recycling.

The invention is realized by the following technical scheme.

The utility model provides an assembly is retrieved in sorting that becomes more meticulous of abandonment plastic bottle, includes and sets gradually according to the front and back sequencing:

the abnormal specification screening device comprises a screening conveying line for conveying the waste plastic bottles, a screening mechanism arranged on the screening conveying line and an abnormal specification collecting line; the screening mechanism is used for capturing and screening abnormal specification classes conveyed on the conveying line and sending the abnormal specification classes into an abnormal specification collecting line;

the multi-stage arrangement conveying device comprises a plurality of plane arrangement conveying mechanisms which are connected end to end from front to back; the plurality of plane sorting and conveying mechanisms are arranged in a front-back sequence, the heights of the plane sorting and conveying mechanisms are gradually reduced, and the conveying speed is gradually increased;

the identification and classification device comprises an identification and classification conveying line for conveying the waste gas plastic bottles, and the identification and classification conveying line is provided with an infrared detection camera and an identification camera; the infrared detection camera shoots the passing waste plastic bottles to detect whether impurities exist in the waste plastic bottles or not; the identification camera shoots the waste plastic bottles for identifying the final classification of the waste plastic bottles;

the sorting device comprises a sorting conveying line for conveying the waste plastic bottles, and a plurality of sorting stations which are arranged along the sorting conveying line and correspond to different final classifications; the letter sorting station includes and sorts the letter sorting collection line that the transfer chain cross set up, with the waste plastic bottle on the letter sorting transfer chain send the push mechanism to on the letter sorting collection line.

As a further improvement of the invention, the abnormal specification screening device further comprises a first climbing conveying line, and the first climbing conveying line and the screening conveying line are connected end to end; the rear end of the first climbing conveying line is higher than the screening conveying line.

As a further improvement of the invention, the screening conveying line comprises two screening conveying channels which are arranged in parallel, and a screening gap for dropping abnormal specification classes is arranged between the two screening conveying channels; a flow distribution plate is arranged between the front ends of the two screening conveying channels, and the flow distribution plate is inclined downwards from the middle to the left and right sides, so that waste plastic bottles falling on the flow distribution plate from the first climbing mechanism slide into the screening conveying channels leftwards/rightwards; the exception specification collection line is located below the screening gap to receive exception specification classes.

As a further improvement of the invention, the screening mechanism comprises a capturing camera and a screening manipulator which are arranged at the rear end of the screening conveying line; the catching camera is used for identifying abnormal specification classes in the waste gas plastic bottles on the screening and conveying channel, and the screening mechanical arm is used for throwing the found abnormal specification classes into the screening gap; the screening manipulator comprises a plane rotating motor arranged at the rear end of the screening conveying line, a mechanical arm connected to the plane rotating motor, a lifting rod installed on the mechanical arm, and a vacuum sucker arranged at the bottom end of the lifting rod.

As a further improvement of the invention, the multi-stage arrangement conveying device further comprises a second climbing conveying line; the second climbing conveying line is connected with the first plane arranging and conveying mechanism end to end, and the height of the rear end of the second climbing conveying line is higher than that of the first plane arranging and conveying mechanism.

As a further improvement of the invention, guard rails are arranged on two sides of the plane tidying conveying mechanism, at least one partition rail is arranged in the middle of the plane tidying conveying mechanism, and the guard rails and the partition rails divide the conveying surface of the conveying mechanism into a plurality of tidying conveying channels which are arranged side by side.

As a further improvement of the invention, the identification and classification conveying line is also provided with a high-brightness infrared light source and a high-brightness light source; the high-brightness infrared light source is used for penetrating and irradiating the passing waste plastic bottle and matching with line scanning infrared shooting; the high-brightness light source is used for illuminating the waste plastic bottles passing through and is matched with the recognition camera for shooting.

As a further improvement of the invention, the sorting and collecting line is arranged below the sorting conveying line, the front end of the sorting and collecting line is positioned at one side of the sorting conveying line and used for receiving the dropped waste plastic bottles, and the other end of the sorting and collecting line extends towards the other side of the sorting conveying line; the left and right sides of letter sorting collection line all is provided with the baffle that prevents that abandonment plastic bottle from dropping.

As a further improvement of the invention, the left side and the right side of the sorting conveying line are respectively provided with a bottle falling baffle plate, and the bottle falling baffle plates are used for blocking the waste gas plastic bottles which are fallen off from the side of the sorting conveying line under the action of the pushing mechanism so as to enable the waste gas plastic bottles to fall on the sorting conveying line.

As a further improvement of the invention, the pushing mechanism is arranged in an air injection structure or a mechanical pushing structure.

The invention has the beneficial effects that:

the invention realizes the intelligent goods checking, price checking, classifying and sorting automatic processing device for the recycled plastic bottles, solves the problems of batch goods checking and price checking in the fields of garbage classification and comprehensive resource recycling at present by adopting standardized, intelligent and automatic means, can perform multi-class fine classification and classification sorting on the recycled plastic bottles in the recycling process, provides raw material guarantee for subsequent high-quality material regeneration, particularly performs strict traceability distinguishing between food grade and non-food grade on the recycled plastic bottles, lays solid digital raw material authentication conditions and foundations for the raw material sources of the future recycled plastic for food grade packaging, and improves the added value of the recycled material. Meanwhile, the industrial, integrated, intelligent and environment-friendly design is adopted, so that the recovery efficiency is improved, the recovery labor intensity and the recovery site area are greatly reduced, the recovery cost is greatly reduced, and the problems of labor force and environmental protection commonly existing in the current recovery industry are solved; meanwhile, the system is additionally provided with a receiving and goods-checking storage management system which is in digital butt joint with the equipment, so that the problem of financial accounting on a recovery site is effectively solved, and a technical foundation is laid for legal taxes and legal operation of recovery enterprises.

Drawings

The preferred embodiments of the present invention will hereinafter be described in detail to facilitate understanding of the objects and advantages of the invention, with reference to the accompanying drawings, in which:

FIG. 1 is a front view of a refined sorting and recycling assembly of waste plastic bottles;

FIG. 2 is a schematic structural diagram of a first climbing conveyor line;

FIG. 3 is a schematic diagram of an abnormal specification collection line;

FIG. 4 is a schematic structural view of a second climbing conveyor line;

FIG. 5 is a schematic structural view of a flat finishing conveyor line;

FIG. 6 is a top plan view of the flat collation conveyor line;

FIG. 7 is a schematic diagram of the structure of the recognition and classification device;

FIG. 8 is a schematic view of the sorting apparatus;

fig. 9 is a schematic structural diagram of a sorting collection line.

Detailed Description

The invention is explained in more detail below with reference to the drawings and exemplary embodiments.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like as referred to or as may be referred to in this specification are defined with respect to the configuration shown in the drawings, and the terms "inner" and "outer" refer to directions toward and away from the geometric center of a particular component and are relative terms, and thus may be changed accordingly depending on the position and the state of use of the particular component. Therefore, these and other directional terms should not be construed as limiting terms.

Referring to fig. 1-9, a refined sorting and recycling assembly for waste plastic bottles comprises, in order from front to back: abnormal specification screening device 1, multistage arrangement conveyor 2, discernment sorter 3, sorting device 4.

The abnormal specification screening apparatus 1 is used for inputting waste plastic bottles and screening out abnormal specification classes, mainly large specification daily use chemicals, having width and thickness dimensions other than height exceeding 10CM, such as a laundry bottle, a large shampoo bottle, a laundry powder bucket, and the like.

The multistage arrangement conveying device 2 adjusts the direction of the screened waste plastic bottles and arranges the waste plastic bottles at the arrangement intervals, and the waste plastic bottles passing through the multistage arrangement conveying device 2 are adjusted to be in the front-back direction and are arranged into a queue with a certain interval in the front-back direction.

The recognition and classification device 3 detects and recognizes waste plastic bottles passing through in order, detects whether the waste plastic bottles contain sundries (for example, whether the bottles contain metal objects such as screws, bolts and the like), recognizes specific models of the waste plastic bottles and finally classifies the waste plastic bottles.

And the sorting device 4 sorts and recovers the waste plastic bottles after identification and classification according to the final classification.

The abnormal specification screening device 1 includes a first climbing conveyor line 11, a screening conveyor line 12, an abnormal specification collecting line 13, and a screening mechanism provided on the screening conveyor line 12, wherein the first climbing conveyor line 11 and the screening conveyor line 12 are connected in series. First climbing transfer chain 11 is by preceding tilt up backward, screens out transfer chain 12 and sets up to the horizontally transfer chain to highly being higher than the screening out transfer chain 12 of 11 rear ends of first climbing transfer chain, the abandonment plastic bottle constructs the transport through first climbing transfer chain 11, and drops from its rear end and gets into the screening out transfer chain 12, screens out the unusual specification class that the mechanism is arranged in catching the abandonment plastic bottle, and sends into unusual specification transfer chain with it.

The slope setting of first climbing transfer chain 11 can be so that the discarded plastic bottle that piles up is shaken off to the discarded plastic bottle that is pressed below behind the entering screening transfer chain 12 can't be removed the mechanism by the screening and discerns, thereby leaks into multistage arrangement conveyor 2 with unusual specification class. The first climbing conveying line 11 can effectively control the input unit quantity by controlling the running speed of the first climbing conveying line when finishing throwing in the waste plastic bottles so as to adapt to the unit identification and sorting capacity of the production line.

Roller conveyor, drag chain conveyor, band conveyer can be used to first climbing transfer chain 11, and the roller conveyor is preferred to be used in the phenomenon of the landslide appearing in the discarded plastic bottle of avoiding meeting the specification when considering carrying. Moreover, through proper inclination angle setting, the abnormal specification class with partial diameter larger than 10cm can slide off the first climbing conveying line 11, so that the pre-screening effect is achieved, and the working pressure of a subsequent screening mechanism is reduced. In addition, a placing platform 111 may be disposed at the front end of the first climbing conveyor line 11, and is used for specially stacking waste plastic bottles to wait for the conveyance of the first climbing conveyor line 11.

The screening conveying line 12 comprises two screening conveying channels 121 arranged in the front-back direction, the screening conveying channels 121 can use a belt conveyor or a chain scraper conveyor, a screening gap 122 is formed between the two screening conveying channels 121, and the screening gap 122 is communicated to the lower side of the screening conveying channels 121 all the time and is used for enabling abnormal specification types to fall. A plurality of inclined slide plates 123 are arranged along the inner side of the two screening conveying channels 121, and abnormal specifications falling from the screening gap 122 can slide down along the inclined slide plates 123. The abnormal specification collecting line 13 is installed below the screening conveying passage 121 and faces the screening gap 122 for receiving the abnormal specification class dropped from the screening gap 122. The abnormal-specification collection line 13 may use a belt conveyor or a drag conveyor.

Be provided with flow distribution plate 124 in the middle of two screening conveying passageway 121 front ends, the inboard side that corresponds screening conveying passageway 121 is pressed close to respectively to two sides about flow distribution plate 124, flow distribution plate 124 is from middle to left and right sides downward sloping to form two landslides that slide respectively to two screening conveying passageway 121, drop the abandonment plastic bottle on screening transfer chain 12 from first climbing transfer chain 11, if from the left side or the right side then directly can drop on two screening conveying passageway 121, if drop from the centre then can drop on flow distribution plate 124, can be along flow distribution plate 124 landing on one of them screening conveying passageway 121, in order to avoid directly falling into screening clearance 122. In addition, the length of the diverter plate 124 is greater than the length of the waste plastic bottles, preventing the diverter plate 124 from sliding forward into the screening gap 122.

The screening conveyor line 12 further comprises two blanking hoppers 125, the upper end openings of the two blanking hoppers 125 are connected with the rear ends of the two screening conveying channels 121, and waste plastic bottles enter the upper end openings of the blanking hoppers 125 through the screening conveying channels 121 and fall from the lower end openings to enter the subsequent multi-stage sorting device.

The screening mechanism comprises two capturing cameras 14 and a screening manipulator, wherein the two capturing cameras 14 are respectively located at the rear ends of the two screening conveying lines 12, the capturing cameras 14 can be specifically installed on the blanking hopper 125, the capturing cameras 14 recognize abnormal specification types in waste plastic bottles on the screening conveying channels 121, and the abnormal specification types are thrown into the screening gaps 122 from the screening conveying channels 121 through actions of the screening manipulator. The screening manipulator comprises a plane rotating motor 151, a mechanical arm 152, a lifting rod 153 and a vacuum chuck 154, wherein the plane rotating motor 151 is installed between the rear ends of the two screening conveying channels 121, the mechanical arm 152 is horizontally arranged, the root part of the mechanical arm is installed on the plane rotating motor 151, the plane rotating motor 151 can drive the mechanical arm 152 to rotate on the plane, the lifting rod 153 is vertically installed at the end part of the mechanical arm 152, a motor capable of driving the lifting rod 153 to ascend and descend is arranged in the mechanical arm 152, the vacuum chuck 154 is installed at the bottom end of the lifting rod 153, and the vacuum chuck 154 is opened or closed through electromagnetic driving and used for sucking or releasing abnormal specification types.

Multistage arrangement conveyor 2 includes second climbing transfer chain 21, a plurality of front and back plane arrangement transfer chain 22 of end to end, and wherein the front end of second climbing transfer chain 21 links up with two blanking fill 125 of unusual specification screening device 1, and the rear end links up with the front end of first plane arrangement transfer chain 22. The second climbing conveyor line 21 functions in the same way as the first climbing conveyor line 11 and is also a preferably roller conveyor. The plurality of plane finishing conveying lines 22 are arranged in a front-back sequence, the heights of the plane finishing conveying lines are gradually reduced, the conveying speed is gradually increased, and the height of the rear end of the second climbing conveying line 21 is higher than that of the first plane finishing conveying line 22. The waste plastic bottles conveyed by the second climbing conveying line 21 are all horizontal, when the waste plastic bottles drop on the first plane arrangement conveying line 22, due to height drop, the waste plastic bottles can jump, under the state that the plane arrangement conveying line 22 starts to operate, the waste plastic bottles can rotate by a certain angle, after dropping for many times, the waste plastic bottles can be adjusted to the front and back directions through rotation, and through differential adjustment of the plane arrangement conveying lines 22, the waste plastic bottles are arranged into ordered queues at certain intervals.

The plane finishing conveying line 22 is preferably a belt conveyor, the left side and the right side of the plane finishing conveying line are provided with guard rails 221, the middle of the plane finishing conveying line 22 is provided with at least one partition fence 222, and the guard rails 221 and the partition fences 222 divide the conveying surface of the plane finishing conveying line 22 into a plurality of finishing conveying channels 22-1 which are arranged side by side. In this embodiment, the number of the division columns 222 is one, and the specific number is determined according to the size of the waste plastic bottles and the width of the flat finishing line 22.

When the waste plastic bottles drop from the second climbing conveyor line 21 to the first plane sorting conveyor line 22, the transverse waste plastic bottles can jump and the bottle caps or the bottle bottoms of the waste plastic bottles collide with the partition fence 222 or the protective fence 221, the plane sorting conveyor line 22 which is operated is started in a matched mode, the waste plastic bottles can rotate, the lighter waste plastic bottles can be basically adjusted to be in the front-back direction from the transverse direction, the heavier waste plastic bottles or waste plastic bottles still containing liquid can be adjusted to be in the oblique direction from the transverse direction, and the oblique waste plastic bottles can be finally adjusted to be in the front-back direction after being adjusted by the plane sorting conveyor line 22 for multiple times.

The waste plastic bottles in the last flat finishing conveyor line 22 are all arranged in a front-back direction and in a row at certain intervals, so that the width of the partition column 222 of the last flat finishing conveyor line is kept constant from back to front, i.e. the width of the flat finishing conveyor path 22-1 is uniform. The widths of the remaining partition columns 222 of the plane finishing conveying lines 22 are gradually reduced from back to front, when the waste plastic bottles fall from the rear end of the previous plane finishing conveying line 22 to the front end of the next plane finishing conveying line 22, the waste plastic bottles collide with the partition columns 222 or the guard rails 221 and continue to be conveyed forwards after rotating for a certain angle, and at the moment, the contact between the bottle caps or the bottle bottoms and the partition columns 222 is gradually changed into separation, so that resistance cannot be generated on the conveying of the waste plastic bottles, and the forward moving speed of the waste plastic bottles is reduced.

When the waste plastic bottles fall on the plane sorting conveying line 22, if the waste plastic bottles just fall on the partition column 222, the waste plastic bottles can jump and finally jump to the sorting conveying channel 22-1, but the waste plastic bottles and the waste plastic bottles falling later can be in the same row due to the hysteresis phenomenon caused by the fact that the waste plastic bottles do not fall on the sorting conveying channel 22-1 in the first time, so that except the last plane sorting conveying line 22, the width of the partition column 222 of the first to last plane sorting conveying line 22 is not smaller than the width of the two waste plastic bottles in parallel, and the two waste plastic bottles in parallel are prevented from being clamped when the situation occurs. Since the waste plastic bottles dropped onto the last flat finishing line 22 have already been finished, the width of the division bar 222 of the first to the last flat finishing line 22 is larger than the width of the division bar 222 of the last flat conveyor, so that the finishing conveying path 22-1 of the last flat conveyor line is narrower.

In order to enable the waste plastic bottles to fall on the tidying conveying channel 22-1 as soon as possible after the collision with the partition fence 222 and the guard rail 221, the left side and the right side of the partition fence 222 and the inner side of the guard rail 221 are provided with slope surfaces 22-A, the bottom edge of the slope surface 22-A extends to the tidying conveying channel 22-1, the waste plastic bottles can slide along the slope surfaces 22-A quickly after the collision with the partition fence 222 and the guard rail 221, and therefore conveying lag time is reduced.

In addition, the division column 222 of the first to the last plane arrangement conveying line 22 extends from the front end of the plane arrangement conveying line 22 to the middle rear part, and the length of the division column 222 is long enough to adjust the direction of the waste plastic bottles and reduce the length to reduce the self weight. The partition column 222 of the last flat finishing conveyor line 22 extends from the front end to the rear end of the flat finishing conveyor line 22, and cooperates with the narrower finishing conveyor passage 22-1 of the last flat finishing conveyor line 22 to maintain the position of the waste plastic bottles.

And the left side and the right side of the rear end of the final plane tidying conveying line 22-1 of the plane tidying conveying line are provided with slope plates 223, the bottom edges of the slope plates 223 extend to the tidying conveying line 22-1, and the width between the bottom edges of the two slope plates 223 is smaller than the width of the conveying line and is not smaller than the width of a single waste plastic bottle.

If two waste plastic bottles falling from the penultimate plane sorting conveying line 22 are connected end to end or are not positioned in the center, when the waste plastic bottles fall onto the last plane sorting conveying line 22, the waste plastic bottles collide with the slope plate 223, so that the first waste plastic bottles fall onto the sorting conveying channel 22-1 firstly, the first sorting conveying channel 22-1 is driven to convey backwards due to the acceleration of the conveying speed of the sorting conveying channel 22-1, and at the moment, the second sorting conveying channel 22-1 is still in the penultimate plane sorting conveying line 22 or in the falling process, so that the two waste plastic bottles connected end to end are separated.

Even if the waste plastic bottles are not in the center position before falling, when they fall on one of the slope plates 223, they will slide down the slope plate 223, and since the width between the two slope plates 223 is smaller than the width of the conveying passage, the waste plastic bottles are finally adjusted to the center position of the tidying conveying passage 22-1. Therefore, after passing through the multi-stage sorting and conveying device 2, the waste plastic bottles can be adjusted to be ordered queues at a certain interval from front to back and kept at the center of the conveying channel, so that the subsequent recognition and classification device 3 can accurately recognize and classify the waste plastic bottles.

In addition, the front side of the slope plate 223 is a bevel edge, so that the front length and the back length of the slope plate 223 are gradually reduced from top to bottom, only the middle rear part of the waste plastic bottle can be in contact with the slope plate 223 when the waste plastic bottle falls on the slope plate 223, the front end of the waste plastic bottle is suspended, the front end of the waste plastic bottle can be in contact with the arranging conveying channel 22-1 at the first time when the waste plastic bottle falls off along the slope plate 223 and is driven to convey forwards, the waste plastic bottle can be quickly separated from the two slope plates 223, conveying hysteresis can be reduced, and rear end collision of the waste plastic bottle behind is avoided.

In the embodiment, two left and right rows are arranged, three plane finishing conveying lines in each row are respectively recorded as a first-level plane finishing conveying line, a second-level plane finishing conveying line and a third-level plane finishing conveying line, the height difference between each two levels is about 10cm, and the speed difference is about 0.2 m/s. The number of the plane finishing conveying lines is determined according to the actual application requirements, and is not limited to three in the embodiment.

In this embodiment:

primary plane finishing conveying line: the plastic bottle that will retrieve plastic bottle branch rail finishing device and carry and come falls into four arrangement transfer passage, because of the reason that has the height fall, the abandonment plastic bottle will beat, and on the one end of abandonment plastic bottle fell the arrangement transfer passage earlier, through the drive of arrangement transfer passage and the barrier effect of rail guard and divider, the abandonment plastic bottle will rotate certain angle, and most abandonment plastic bottle can be adjusted and rotate 90 and be to the front and back direction.

And (3) secondary plane finishing and conveying line: one part of the waste plastic bottles conveyed by the first-level conveying belt is parallel left and right or oblique, the waste plastic bottles fall off again due to the height difference between the first-level plane finishing conveying line and the second-level plane finishing conveying line, one of the two parallel waste plastic bottles touches an inclined baffle in the middle of the second-level waste plastic bottle, the waste plastic bottle falls off later than the other one, the speed of the second-level waste plastic bottle is higher than that of the first-level waste plastic bottle, the two plastic bottles are sequenced back and forth through a differential speed and the direction is continuously adjusted, part of the oblique waste plastic bottles are also continuously adjusted, and the waste plastic bottles passing through the second-level plane finishing conveying line are basically adjusted to be front and back;

three-level plane finishing conveying line: through the contact of the ramp plate of tertiary plane arrangement transfer chain, the waste plastic bottle will automatic playback to well position through the plane arrangement transfer chain of second grade, and the speed of tertiary plane arrangement transfer chain is faster than second grade plane arrangement transfer chain, will make the interval between the waste plastic bottle further pull open, accomplishes final adjustment.

The recognition and classification device 3 comprises a recognition and classification conveying line 31 for conveying waste plastic bottles, an infrared detection camera 32, a recognition camera 33, a high-brightness infrared light source 34 and a high-brightness light source 35. The recognition camera 33 can be a recognition camera or a plane camera, and the high-brightness infrared light source 34 can be an infrared detection camera or an infrared plane camera. The front end of the identification sorting conveyor line 31 is connected with the last plane finishing conveyor line 22, and the rear end is connected with the sorting device 4. Similar to the plane finishing conveying line 22, the identification and classification conveying line 31 is provided with guard rails 311 on both sides and at least one partition rail 312 in the middle, and the identification and classification conveying line 31 is divided into a plurality of identification and classification conveying passages 31-1 arranged side by side. In this embodiment, two identification and classification conveyor lines 31 are provided, and one partition 312 of the identification and classification conveyor line 31 is provided, so that four identification and classification conveyor paths 31-1 are connected with the finishing conveyor path 22-1 of the last plane finishing conveyor line 22.

The barriers 312 and 311 of the identification and classification conveyor line 31 are used to prevent the waste plastic bottles from falling off, and therefore have a certain height, but the waste plastic bottles need to be sorted after the identification and classification by the identification and classification device 3, while the higher barriers 312 and 311 obstruct the sorting, so that the barriers 311 and 312 extend from the front end to the middle of the identification and classification conveyor line 31, the two sides of the identification and classification conveyor channel 31-1 are provided with stopping strips 313 from the middle to the rear end for connecting the barriers 311 and 312, and the height of the stopping strips 313 is lower than that of the barriers 311 and 312.

In this embodiment, the identification/sorting conveyor path 31-1 is preferably a slat conveyor. The high-brightness infrared light source 34 is arranged at the front end of each recognition and classification conveying channel 31-1, the high-brightness infrared light source 34 is located below the conveying surface of the recognition and classification conveying channel 31-1, the infrared light source is emitted upwards to penetrate through and irradiate the waste plastic bottles, and the infrared detection camera 32 is arranged above the front end of the recognition and classification conveying channel 31-1 and used for shooting the waste plastic bottles downwards. A high-brightness light source 35 is arranged above the middle part or the middle-rear part of the identification and classification conveying channel 31-1, a downward emitting light source illuminates the waste plastic bottles, and an identification camera 33 is arranged above the middle part or the middle-rear part of the identification and classification conveying channel 31 and is positioned above the high-brightness light source 35 and used for shooting the waste plastic bottles downwards. For convenience of installation, a rack 36 is erected at the position of the identification and classification conveying line 31, and the infrared detection camera 32, the identification camera 33 and the high-brightness light source 35 are all installed on the rack 36. The scanning infrared camera is used for detecting whether sundries exist in the waste plastic bottles, and the recognition camera 33 is used for recognizing the final classification of the waste plastic bottles.

The specific classification and identification steps are as follows:

s1: the high-brightness infrared light source 34 irradiates the waste plastic bottle in a penetrating way, the recognition camera 33 shoots the waste plastic bottle, whether the waste plastic bottle contains sundries or not is detected, and if the waste plastic bottle contains the sundries, the final classification of the waste plastic bottle is determined; if there is no foreign matter, S2 is performed.

S2: the high-brightness light source 35 irradiates the waste plastic bottles, the recognition camera 33 shoots the waste plastic bottles, the shot pictures are compared with the models in the model library through appearance features, and the final classification of the waste plastic bottles is determined.

Wherein the step of establishing the model library in step S2 includes:

s21: establishing a list of different waste plastic bottles, classifying the waste plastic bottles, and determining the final classification;

s22: each waste plastic bottle collects a plurality of images with different angles and different damage degrees;

s23: calibrating different images of each waste plastic bottle;

s24: and (4) carrying out self-learning on the calibrated image of each waste plastic bottle to generate a model.

Step S21 the waste plastic bottles are classified by at least three different attributes, including food grade or non-food grade, type of liquid originally contained in the waste plastic bottles, material of the waste plastic bottles, and color of the waste plastic bottles. For example, from the three attributes described above, several final classifications can be formed including: food-grade PET tea beverage juice bottle white (hundreds of raw materials of different manufacturers such as Kangshifu tea beverage, unified tea beverage, American juice source juice, water-driven cola beverage, etc.), food-grade PET carbonated beverage white (hundreds of raw materials of different manufacturers such as coca cola soda water, Yuanqi forest soda water, farmer spring soda water, Baishi cola, etc.), food-grade PET mineral water pure water white (hundreds of raw materials of different manufacturers such as coca cola drinking water, unified mineral water, Kangshifu drinking water, farmer spring water, etc.), food-grade PET pure blue (various kinds of Dancan pulsation, etc.), food-grade PET pure green (various kinds of Xuebi, etc.), food-grade PET white blue (few carbonic acid beverage products), food-grade PET variegated color (small manufacturer plastic bottle), food-grade HDPE white mouth (white semi-transparent milk bottle with aluminum seal), HDPE white non-aluminum mouth (white semi-transparent milk bottle, no aluminum seal), food-grade HDPE whil (white opaque milk bottle), non-food-grade HDPE whil (white translucent daily chemical plastic bottle), non-food-grade HDPE whil (white opaque daily chemical plastic bottle), HDPE variegated (HDPE plastic bottle except white), PP beverage bottle (plastic bottle of a few manufacturers such as Yibao purified water).

The working principle is as follows:

image acquisition: the list of waste plastic bottles needs to contain as many different waste plastic bottles as possible (including carbonated beverages, mineral water, purified water, tea, fruit drinks and dairy products, edible oil, etc.), at least 50 samples are collected for each product, an image is taken of the sample for each waste plastic bottle (this section only works for the identification camera 33), and approximately 200 and 400 images of different degrees of damage are taken for each plastic bottle.

Raw material (sample) calibration: the collected images are classified according to brands and models, and plastic bottle raw materials of the same model are numbered and remarked with information. Drawing out the plastic bottle bodies in each picture by using special calibration software such as Vision Pro 7.0 systems of Connaissance companies (Cognex) or Shenzhen artificial intelligence and OpenCV of a robot institute, and storing the drawn plastic bottle bodies into a specified folder;

deep learning and modeling: learning and modeling software such as hundreds of papdleaddle or google tenserflow is installed in the deep learning special computer, and calibrated sample pictures are introduced by the software for self-learning and model generation. Deep learning principle: and performing segmentation, fragmentation, color recognition and other orientation feature processing on the calibrated image, and obtaining a model of the model plastic bottle through training. Deep learning basic process: model building, data preprocessing, training model, result visualization and testing.

When the picture taken by the recognition camera 33 is compared with the model, the compared information includes the brand, model, volume, appearance, size, trademark, color, presence or absence of bottle cap, bar code, material and the like of the waste plastic bottle.

In addition, one sorting station 42 of the subsequent sorting device 4 is dedicated to sorting the waste plastic bottles with the sundries, so that the waste plastic bottles with the sundries detected in step S1 are directly sorted by the sorting station 42, and the waste plastic bottles without the sundries are finally sorted by step S2 and then enter other different sorting stations 42 for sorting.

The sorting device 4 comprises a sorting conveying line 41 for conveying the waste plastic bottles, sorting stations 42 arranged along the sorting conveying line 41, wherein each sorting station 42 comprises a sorting collecting line 421 arranged to intersect with the sorting conveying line 41, and a pushing mechanism (not shown in the figure) for pushing the waste plastic bottles on the sorting conveying line 41 to the sorting collecting line 421, and each sorting station 42 corresponds to the final classification of each waste plastic bottle.

Specifically, letter sorting collection line 421 sets up in the below of letter sorting transfer chain 41, and its front end is located one side of letter sorting transfer chain 41 and is used for receiving the discarded plastic bottle that drops, and the other end extends to the opposite side direction of letter sorting transfer chain 41, the left and right sides of letter sorting collection line 421 all is provided with the baffle 4211 that prevents the discarded plastic bottle and drop.

Considering that the waste plastic bottles are easy to fly by the pushing mechanism when being sorted, the left side and the right side of the sorting conveying line 41 are both provided with the bottle falling baffle plates 422, and the waste plastic bottles falling off from the side of the sorting conveying line 41 under the action of the pushing mechanism are blocked by the bottle falling baffle plates 422 and fall on the sorting conveying line 41.

The pushing device can be set to be an air injection structure or a mechanical pushing structure, which belongs to the prior art and is not described in detail herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments can be modified, or some technical features can be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides an assembly is retrieved in sorting that becomes more meticulous of abandonment plastic bottle which characterized in that includes and arranges according to the front and back sequencing in proper order:

2. The assembly for finely sorting and recovering waste plastic bottles according to claim 1, wherein said abnormal-specification screening device further comprises a first climbing conveyor line, said first climbing conveyor line and said screening conveyor line being connected end to end; the rear end of the first climbing conveying line is higher than the screening conveying line.

3. The assembly for finely sorting and recycling waste plastic bottles according to claim 1, wherein the screening conveyor line comprises two screening conveyor channels arranged in parallel, and a screening gap for dropping abnormal specification types is formed between the two screening conveyor channels; a flow distribution plate is arranged between the front ends of the two screening conveying channels, and the flow distribution plate is inclined downwards from the middle to the left and right sides, so that waste plastic bottles falling on the flow distribution plate from the first climbing mechanism slide into the screening conveying channels leftwards/rightwards; the exception specification collection line is located below the screening gap to receive exception specification classes.

4. The assembly for finely sorting and recovering waste plastic bottles according to claim 3, wherein the screening mechanism comprises a capturing camera and a screening manipulator which are arranged at the rear end of the screening conveyor line; the catching camera is used for identifying abnormal specification classes in the waste gas plastic bottles on the screening and conveying channel, and the screening mechanical arm is used for throwing the found abnormal specification classes into the screening gap; the screening manipulator comprises a plane rotating motor arranged at the rear end of the screening conveying line, a mechanical arm connected to the plane rotating motor, a lifting rod installed on the mechanical arm, and a vacuum sucker arranged at the bottom end of the lifting rod.

5. The assembly for finely sorting and recovering waste plastic bottles according to claim 1, wherein the multi-stage sorting conveyor further comprises a second climbing conveyor line; the second climbing conveying line is connected with the first plane arranging and conveying mechanism end to end, and the height of the rear end of the second climbing conveying line is higher than that of the first plane arranging and conveying mechanism.

6. The assembly for finely sorting and recycling waste plastic bottles according to claim 1, wherein guard rails are arranged on two sides of the flat sorting and conveying mechanism, at least one partition rail is arranged in the middle of the flat sorting and conveying mechanism, and the guard rails and the partition rails divide the conveying surface of the conveying mechanism into a plurality of parallel sorting and conveying channels.

7. The assembly for finely sorting and recycling waste plastic bottles according to claim 1, wherein the identification and classification conveying line is further provided with a high-brightness infrared light source and a high-brightness light source; the high-brightness infrared light source is used for penetrating and irradiating the passing waste plastic bottle and matching with line scanning infrared shooting; the high-brightness light source is used for illuminating the waste plastic bottles passing through and is matched with the recognition camera for shooting.

8. The assembly for finely sorting and recycling waste plastic bottles according to claim 1, wherein the sorting and collecting line is arranged below the sorting conveying line, the front end of the sorting and collecting line is positioned at one side of the sorting conveying line and used for receiving the dropped waste plastic bottles, and the other end of the sorting and collecting line extends towards the other side of the sorting conveying line; the left and right sides of letter sorting collection line all is provided with the baffle that prevents that abandonment plastic bottle from dropping.

9. The assembly for finely sorting and recycling waste plastic bottles according to claim 8, wherein the left and right sides of the sorting conveyor line are provided with bottle falling baffles, and the bottle falling baffles block waste plastic bottles falling off from the side of the sorting conveyor line under the action of the pushing mechanism to fall on the sorting conveyor line.

10. The assembly for finely sorting and recycling waste plastic bottles according to claim 1, wherein said pushing mechanism is configured as an air jet structure or a mechanical pushing structure.