A bottle label sorting system

Abstract

The present application provides a bottle label sorting system, which comprises a conveying line for conveying labels to be sorted; a heat shrinkage module arranged above the conveying line for heating the labels to be sorted on the conveying line to a heat shrinkage state; a spectral recognition module arranged on one side of the conveying line for recognizing the labels in the heat shrinkage state on the conveying line; and a sorting module arranged on one side of the conveying line and electrically connected with the spectral recognition module for sorting the labels according to the recognition result of the spectral recognition module. The present application heats the waste labels to a suitable sorting state, then performs spectral recognition and sorting, processes the polymer labels unsuitable for sorting into a suitable form for sorting, and realizes the sorting of PP, PE, PET, PVC labels and PET / PE bottle pieces mixed therein without damaging the materials, effectively improving the recycling value of mixed waste plastic labels.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material sorting, in particular to a bottle label sorting system. BACKGROUND

[0002] PET / PE plastics account for more than 17% of the total amount of plastics consumed in the world, with a total amount of more than 8000 tons / year, most of which are used to manufacture plastic bottles. Due to its very short service life, a large number of PET / PE bottles are produced. Since the recycling of PET / PE bottles can generate great value, China's recycling capacity accounts for 35% of the world's total, and the recycling rate can reach more than 90%. During the recycling process, nearly 10% of the waste labels will be produced, and the recycling value is low.

[0003] At present, in the recycling of PET / PE bottles, waste labels are removed from the target product (PET / PE bottle pieces) through a label removal machine, a crusher and an air separator, which mixes PET, PE, PVC and PP polymers. Due to the large accumulation volume and small mass of waste labels, it is easy to cause entrainment and floating in gravity separation, making it difficult to separate them according to polymer types. In addition, gravity separation cannot separate PET and PVC materials, and PE and PP materials, which is the main reason for the low value of waste labels. SUMMARY

[0004] Therefore, it is necessary to provide a bottle label sorting system to solve the problem that the existing waste PET / PE bottle recycling process and equipment cannot separate different polymer types.

[0005] A bottle label sorting system, comprising:

[0006] A transport line for transporting labels to be sorted;

[0007] A heat shrinkage module arranged above the transport line for heating the labels to be sorted on the transport line to a heat shrinkage state;

[0008] A spectrum recognition module arranged on one side of the transport line for identifying the labels in the heat shrinkage state on the transport line; and

[0009] A sorting module arranged on one side of the transport line and electrically connected to the spectrum recognition module for sorting labels according to the identification result of the spectrum recognition module.

[0010] Optionally, the transport line comprises a chain conveyor belt, a driving mechanism and a transport carrier, the chain conveyor belt is sleeved on the driving mechanism, the driving mechanism is used to drive the chain conveyor belt to rotate, and the transport carrier is detachably mounted on the chain conveyor belt.

[0011] Optionally, the chain conveyor belt is provided with embedding holes matched with the transport carriers, and the transport carriers are detachably embedded in the embedding holes.

[0012] Optionally, the transport carriers are made of corundum ceramic.

[0013] Optionally, the system further comprises an inductor and a controller, the controller is electrically connected with the inductor and the heat shrinkage module, the inductor is used for sensing the transport carriers on the chain conveyor belt, and the controller drives the heat shrinkage module to heat or stop heating according to the sensing signal of the inductor.

[0014] Optionally, the inductor is an inductive grating, the inductive grating is fixed on the chain conveyor belt, and the grating lines formed by the inductive grating are parallel to the horizontal plane and perpendicular to the transport direction of the chain conveyor belt.

[0015] Optionally, the heat shrinkage module is an infrared heater, the heating rate of the infrared heater is R=100-200℃ / s, and the highest temperature is 1000℃.

[0016] Optionally, the system further comprises a cooling module, the cooling module is located below the chain conveyor belt, and is used for cooling the transport carriers and the heat shrinkage labels on the transport carriers.

[0017] Optionally, the sorting module comprises a plurality of air jets and a gas supply pump, the gas supply pump is in communication with the air jets through a pipeline, the air jets are arranged on one side of the chain conveyor belt along the transport direction of the chain conveyor belt and face the chain conveyor belt, and the gas supply pump is used for supplying gas to the air jets.

[0018] The present application has the following advantages:

[0019] The present application provides a bottle label sorting system, which comprises a heat shrinkage module, a spectrum recognition module and a sorting module, the heat shrinkage module is used for heating the labels to be sorted on the transport line to a heat shrinkage state, the spectrum recognition module is used for recognizing the labels in the heat shrinkage state on the transport line, the sorting module is electrically connected with the spectrum recognition module, and is used for sorting the labels according to the recognition result of the spectrum recognition module, heat treating the waste labels to a state suitable for sorting, then performing spectrum recognition and sorting, treating the polymer labels unsuitable for sorting into a form suitable for sorting, and realizing the sorting of PP, PE, PET, PVC labels and PET / PE bottle pieces mixed therein without damaging the materials, and effectively improving the recycling value of mixed waste plastic labels. BRIEF DESCRIPTION OF DRAWINGS

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the bottle label sorting system of the present invention;

[0022] Figure 2 for Figure 1 A top-view diagram of the central transport line;

[0023] Among them: 1-Conveyor line, 11-Chain conveyor belt, 111-Embedding hole, 12-Drive mechanism, 13-Transport carrier, 2-Heat shrink module, 3-Spectrum recognition module, 4-Sorting module, 5-Cooling module. Detailed Implementation

[0024] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0025] like Figures 1-2 As shown, an embodiment of the present invention provides a bottle label sorting system, which includes:

[0026] The system comprises a transport line 1, a heat-shrinkable module 2, a spectral recognition module 3, and a sorting module 4. The heat-shrinkable module 2, the spectral recognition module 3, and the sorting module 4 are sequentially arranged along the transport line 1. The heat-shrinkable module 2 is used to heat the labels to be sorted on the transport line 1 to a heat-shrinkable state. The spectral recognition module 3 is used to identify the labels in the heat-shrinkable state on the transport line 1. The sorting module 4 is electrically connected to the spectral recognition module 3 and is used to sort the labels according to the identification result of the spectral recognition module 3.

[0027] The application provides a bottle label sorting system, which comprises a heat shrinkage module 2, a spectrum identification module 3 and a sorting module 4, the heat shrinkage module 2 is used for heating the labels to be sorted on the conveying line 1 to a heat shrinkage state, the spectrum identification module 3 is used for identifying the labels in the heat shrinkage state on the conveying line 1, and the sorting module 4 is electrically connected with the spectrum identification module 3 and used for sorting the labels according to the identification result of the spectrum identification module 3, heat treating the waste labels to a suitable sorting state, then performing spectrum identification and sorting, treating the polymer labels not suitable for sorting into a suitable sorting form, and realizing the sorting of the PP, PE, PET, PVC labels and PET / PE bottle pieces mixed therein without damaging the materials, and effectively improving the recycling value of the mixed waste plastic labels.

[0028] Specifically, the conveying line 1 comprises a chain conveyor belt 11, a driving mechanism 12 and a conveying carrier 13, the chain conveyor belt 11 is sleeved on the driving mechanism 12, the driving mechanism 12 is used for driving the chain conveyor belt 11 to rotate, and the conveying carrier 13 is detachably installed on the chain conveyor belt 11.

[0029] In some possible embodiments, the chain conveyor belt 11 is provided with embedding holes 111 matched with the conveying carrier 13, and the conveying carrier 13 is detachably embedded in the embedding holes 111. The relative fixation of the conveying carrier 13 and the chain conveyor belt 11 facilitates positioning.

[0030] In view of the fact that the heat shrinkage module 2 needs to heat the conveying carrier 13, the conveying carrier 13 is made of corundum ceramic.

[0031] Specifically, the conveying carrier 13 is in the shape of a cuboid, and the surface of the conveying carrier 13 is provided with a surface for placing the labels to be sorted.

[0032] Specifically, the heat shrinkage module 2 is arranged above the conveying line 1 and used for heating the conveying carrier 13 passing below the heat shrinkage module 2, so that the labels to be sorted in the conveying carrier 13 are heat shrunk.

[0033] Specifically, the application further comprises an inductor and a controller, the controller is electrically connected with the inductor and the heat shrinkage module 2, the inductor is used for sensing the conveying carrier 13 on the chain conveyor belt 11, and the controller drives the heat shrinkage module 2 to work according to the sensing signal of the inductor. When the conveying carrier 13 does not flow through, the heat shrinkage module 2 is in a non-working state, and when the conveying carrier 13 flows through, the inductor generates a sensing signal, and the controller drives the heat shrinkage module 2 to work according to the sensing signal of the inductor. The purpose of this design is to reduce the working time of the heat shrinkage module 2 and effectively prolong the service life of the heat shrinkage module 2.

[0034] In some possible embodiments, the inductive element is an inductive grating fixed on the chain conveyor 11, and the grating lines formed by the inductive grating are parallel to the horizontal plane and perpendicular to the conveying direction of the chain conveyor 11. When the conveying carrier 13 flows through, the grating lines formed by the inductive grating are shielded, the inductive grating generates an inductive signal, and the inductive signal is sent to the controller, and the controller drives the heat shrinkage module 2 to work according to the inductive signal of the inductive grating.

[0035] Further, the heat shrinkage module 2 is an infrared heater, and the temperature rising rate is R = 100-200 ℃ / s, and the highest temperature is 1000 ℃.

[0036] Specifically, the cooling module 5 is further included, and the cooling module 5 is located below the chain conveyor 11 and is used for cooling the conveying carrier 13 and the heat shrinkable label on the conveying carrier 13.

[0037] In a possible embodiment, the cooling module 5 includes a semiconductor refrigeration sheet, and the semiconductor refrigeration sheet is attached to the chain conveyor 11 and is used for cooling the conveying carrier 13 on the chain conveyor 11 and the heat shrinkable label on the conveying carrier 13, so as to avoid that the temperature of the conveying carrier 13 and the heat shrinkable label on the conveying carrier 13 is too high to affect the work of the optical spectrum identification module 3.

[0038] Further, the optical spectrum identification module includes but is not limited to a combination of a near-infrared spectrum identification device, an X-ray spectrum identification device, a color identification device and the like, and the device is a common structure of a commercial spectrum identification machine. Therefore, details are not described here.

[0039] Specifically, the sorting module 4 includes a plurality of air jet heads and a gas supply pump, the gas supply pump is in communication with the air jet heads through a pipeline, the air jet heads are arranged on one side of the chain conveyor 11 along the conveying direction of the chain conveyor 11 and face the chain conveyor 11, and the gas supply pump is used for supplying gas to the air jet heads. The air jet heads spray gas to the chain conveyor 11, so that the heat shrinkable label on the conveying carrier 13 identified by the optical spectrum identification module is blown to a specified area, and sorting is realized.

[0040] It should be noted that the optical spectrum identification module identifies the heat shrinkable label on the conveying carrier 13, identifies the category of each label, calibrates the position coordinates of each label, determines the time required for the label to move to the sorting module 4, and drives the gas supply pump to supply gas according to the required time interval, so that the heat shrinkable label on the conveying carrier 13 identified by the optical spectrum identification module is blown to a specified area, and sorting is realized.

[0041] The present application has the following advantages:

[0042] The application provides a bottle label sorting system, which comprises a heat shrinkage module, a spectrum identification module and a sorting module, the heat shrinkage module is used for heating the labels to be sorted on the conveying line to a heat shrinkage state; the spectrum identification module is used for identifying the labels in the heat shrinkage state on the conveying line; the sorting module is electrically connected with the spectrum identification module, and is used for sorting the labels according to the identification result of the spectrum identification module, heat treating the waste labels to a state suitable for sorting, then performing spectrum identification and sorting, treating the polymer labels unsuitable for sorting into a form suitable for sorting, and realizing the sorting of PP, PE, PET, PVC labels and PET / PE bottle pieces mixed therein without damaging the materials, and effectively improving the recycling value of mixed waste plastic labels.

[0043] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A bottle label sorting system characterized by, The application relates to a label sorting device, which comprises the following parts: a conveying line for conveying labels to be sorted, the conveying line comprising a chain conveyor, a driving mechanism and a conveying carrier, the chain conveyor being sleeved on the driving mechanism, the driving mechanism being used for driving the chain conveyor to rotate, and the conveying carrier being detachably installed on the chain conveyor; a heat-shrinking module arranged above the conveying line and used for heating labels to be sorted on the conveying line to a heat-shrinking state; a spectrum recognition module arranged on one side of the conveying line and used for recognizing the labels in the heat-shrinking state on the conveying line; a sorting module arranged on one side of the conveying line and electrically connected with the spectrum recognition module, and used for sorting labels according to the recognition result of the spectrum recognition module; an inductor and a controller, the controller being electrically connected with the inductor and the heat-shrinking module, the inductor being used for sensing the conveying carrier on the chain conveyor, the controller being used for driving the heat-shrinking module to heat or stop heating according to the sensing signal of the inductor, the inductor being an inductive grating, the inductive grating being fixed on the chain conveyor, and grating lines formed by the inductive grating being parallel to a horizontal plane and perpendicular to the conveying direction of the chain conveyor; a cooling module arranged below the chain conveyor and used for cooling the conveying carrier and the heat-shrinking labels on the conveying carrier. The chain conveyor is provided with an embedding hole matched with the conveying carrier, and the conveying carrier is detachably embedded in the embedding hole.

2. The bottle label sorting system of claim 1, wherein, The conveying carrier is made of corundum ceramic.

3. The bottle label sorting system of claim 1, wherein, The heat-shrinking module is an infrared heater, the heating rate of which is R=100-200 DEG C / s, and the highest temperature is 1000 DEG C.

4. The bottle label sorting system of claim 1, wherein, The sorting module comprises a plurality of air jets and a gas supply pump, the gas supply pump being in communication with the air jets through pipelines, the air jets being arranged on one side of the chain conveyor and facing the chain conveyor along the conveying direction of the chain conveyor, and the gas supply pump being used for supplying gas to the air jets.

5. The bottle label sorting system of claim 1, wherein, ​

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