Intelligent sorting device for waste PET bottles for recycled plastics

Abstract

The waste PET bottle intelligent sorting device comprises a sorting box cabin, a feeding port is formed in one end of the sorting box cabin, a first discharging port is formed in the end, away from the feeding port, of the sorting box cabin, and a conveying belt is arranged at the lower end of the interior of the sorting box cabin in the length direction of the sorting box cabin; the input end of the conveying belt corresponds to the feeding port, the output end of the conveying belt corresponds to the first discharging port, a camera is arranged above the middle section of the inner side of the sorting box cabin, a second discharging port is formed in one side of the middle of the sorting box cabin, and in the conveying process, the PLC can analyze and recognize bottles passing through the lower portion in real time according to monitoring of the camera; when plastic bottles with caps are found, the system can start the telescopic electric cylinder in time, the bottles with the caps on the conveying belt are ejected out of the second discharging port through the ejection plate and then rapidly return to the original position, and more bottles without the caps are sequentially discharged out of the first discharging port. The defect that an existing device cannot sort bottles with caps and bottles without caps in a classified mode is effectively overcome.

Description

Technical Field

[0001] This utility model relates to the field of PET bottle recycling and sorting technology, specifically to an intelligent sorting device for waste PET bottles used in recycled plastics. Background Technology

[0002] Recycled plastic bottles refer to the process of collecting, cleaning, and sorting waste plastic bottles, then reprocessing them into plastic raw materials through physical or chemical methods such as melt granulation and modification, for reuse in textiles, food and beverage packaging, and home building materials. In a patent application (CN212502461U) describing a high-efficiency sorting mechanism for a waste PET bottle recycling line, PET bottles are directly poured into a square frame. Small bottle caps are screened out through troughs formed by bottom crossbars. The entire system is vibrated by a motor, enabling vibratory screening with high efficiency, simple structure, and low cost.

[0003] The above-mentioned technical solution improves the sorting effect by vibrating the sorting crossbar. However, this device can only screen out individual bottle caps mixed in during the sorting process, but cannot sort out bottle caps that are screwed / fastened to the bottle body. This results in bottles with caps and bottles without caps being output together, which causes inconvenience to subsequent processing and secondary screening, reduces sorting efficiency, and increases overall operating costs. Based on this, an intelligent sorting device for waste PET bottles for recycled plastics is provided to cooperate with the existing device to achieve a more efficient sorting effect. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] Therefore, the purpose of this utility model is to provide an intelligent sorting device for waste PET bottles used in recycled plastics, so as to solve the problem that the existing waste PET bottle sorting devices mentioned in the background art cannot sort out the bottle caps that are screwed / fastened to the bottle body, resulting in bottles with caps and bottles without caps being output together, which brings inconvenience to subsequent processing and secondary screening, reduces sorting efficiency, and increases overall operating costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an intelligent sorting device for waste PET bottles used in recycled plastics, comprising a sorting bin, one end of which has an inlet and the other end away from the inlet has a first outlet. A conveyor belt is arranged along the length of the lower end of the sorting bin, with the input end of the conveyor belt corresponding to the inlet and the output end corresponding to the first outlet. A camera is arranged above the middle section of the inner side of the sorting bin. A second outlet is arranged on one side of the middle of the sorting bin, and the second outlet is located in the output direction of the camera. A discharge pushing assembly corresponding to the second outlet is also arranged on one side of the sorting bin. The bottle with cap on it is pushed out of the sorting bin from the second outlet by the discharge pushing assembly.

[0007] The feed inlet corresponds to the output end of the guide shell in the existing device, and also includes the main control terminal of the sorting device, namely the PLC controller.

[0008] As a preferred embodiment of the intelligent sorting device for waste PET bottles for recycled plastics described in this utility model, the conveyor belt has a drive wheel at one end and a driven wheel at the other end. Several support rollers are distributed along the length direction of the bottom of the conveyor belt. The drive wheel, the driven wheel, and the support rollers are rotatably mounted on both sides of the sorting bin. A servo motor for driving the drive wheel to rotate axially is also provided on one side of the outside of the sorting bin.

[0009] As a preferred embodiment of the intelligent sorting device for waste PET bottles for recycled plastics described in this utility model, a first guide inclined plate located at the lower edge of the inlet is provided at one end of the inner side of the sorting box, and a second guide inclined plate located at the lower edge of the conveyor belt output end is provided at the other end of the inner side of the sorting box, and the lower inclined end of the second guide inclined plate is flush with the lower edge of the first outlet.

[0010] The feed inlet is a circular opening, and its diameter is no more than 50 mm larger than the bottle diameter.

[0011] As a preferred embodiment of the intelligent sorting device for waste PET bottles for recycled plastics described in this utility model, the sorting box has a limiting opening on one side opposite to the second discharge port.

[0012] The unloading push assembly includes a top plate located inside the limiting opening, a U-shaped mounting frame fixed to the outside of the sorting box and located at the outer edge of the limiting opening, and a telescopic electric cylinder fixedly installed on the U-shaped mounting frame with the piston rod end fixedly connected to the top plate.

[0013] As a preferred embodiment of the intelligent sorting device for waste PET bottles for recycled plastics described in this utility model, multiple soft-light illumination lamps are also provided on the top inner side of the sorting box.

[0014] As a preferred embodiment of the intelligent sorting device for waste PET bottles for recycled plastics described in this utility model, the sorting box has an inspection port and a corresponding inspection plate on at least one side of its exterior, and the inspection plate is also provided with an observation window equipped with transparent glass.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This intelligent sorting device for waste PET bottles used in recycled plastics, through vibration output, guides the pre-sorted bottles one by one from the inlet onto the conveyor belt inside the sorting bin. During the conveying process, the PLC controller analyzes and identifies the bottles passing below in real time based on the monitoring of the camera. When a plastic bottle with a cap is detected, the system will promptly activate the telescopic electric cylinder and use the top plate to push the capped bottle on the conveyor belt out from the second discharge port. After completion, it quickly returns to its original position, while more uncapped bottles are discharged sequentially from the first discharge port. This effectively solves the drawback of the existing device's inability to classify and sort capped and uncapped bottles, bringing convenience to subsequent processes, improving sorting efficiency, and reducing operating costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of the device of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the sorting box compartment of this utility model;

[0018] Figure 3 This is a schematic diagram of the unloading jacking assembly of this utility model.

[0019] In the diagram: 100, sorting bin; 110, feed inlet; 120, first discharge outlet; 130, second discharge outlet; 140, inspection plate; 150, observation window; 160, limiting opening; 200, conveyor belt; 210, drive wheel; 220, driven wheel; 230, support roller; 240, servo motor; 300, camera; 400, unloading push assembly; 410, top plate; 420, U-shaped mounting frame; 430, telescopic electric cylinder; 500, PLC controller; 600, guide ramp one; 610, guide ramp two; 700, soft light. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0023] Figures 1-3 The diagram shown is a complete structural schematic of a smart sorting device for recycled PET bottles according to this utility model. Please refer to [link / reference]. Figures 1-3 This embodiment of an intelligent sorting device for recycled PET bottles includes a sorting bin 100. One end of the sorting bin 100 has an inlet 110, and the other end, away from the inlet 110, has a first outlet 120. A conveyor belt 200 is arranged along its length at the lower end of the sorting bin 100. The input end of the conveyor belt 200 corresponds to the inlet 110, and the output end corresponds to the first outlet 120. A camera 300 is arranged above the middle section of the inner side of the sorting bin 100. A second discharge port 130 is provided on one side of the middle section, and the second discharge port 130 is located in the output direction of the camera 300. A discharge push assembly 400 corresponding to the second discharge port 130 is also provided on one side of the sorting box 100. The bottle with the cap on the conveyor belt 200 is pushed out of the sorting box 100 from the second discharge port 130 by the discharge push assembly 400. The inlet 110 corresponds to the output end of the guide shell in the existing device, and also includes the main control terminal of the sorting device, namely the PLC controller 500.

[0024] The conveyor belt 200 has a drive wheel 210 at one end and a driven wheel 220 at the other end. Several support rollers 230 are distributed along the length of the bottom of the conveyor belt 200. The drive wheel 210, the driven wheel 220, and the support rollers 230 are rotatably mounted on both sides of the sorting bin 100. A servo motor 240 for driving the drive wheel 210 to rotate axially is also provided on one side of the outer side of the sorting bin 100. A guide ramp 600 located at the lower edge of the feed inlet 110 is also provided at one end of the inner side of the sorting bin 100. A guide ramp 610 located at the lower edge of the output end of the conveyor belt 200 is also provided at the other end of the inner side of the sorting bin 100. The downward inclined end of the guide ramp 610 is flush with the lower edge of the first discharge port 120. The feed inlet 110 has a circular opening structure, and the diameter of the feed inlet 110 is greater than the diameter of the bottle body by no more than 50 mm. It is understandable that the diameter of the inlet 110 should not be too large, as this would easily lead to two or more plastic bottles entering at the same time, which would be detrimental to the subsequent rejection operation. The diameter of the inlet 110 is slightly larger than the bottle body, such as 50mm, which makes it easier for the bottle to enter and also prevents two bottles from entering at the same time. Since the guide shell of the existing device is a vibrating output, there is no need to worry about blockage when the bottles are output, which is equivalent to the effect of a vibrating plate. The sorting box 100 has a limiting hole 160 on one side opposite to the second discharge port 130; the unloading push assembly 400 includes a top plate 410 located inside the limiting hole 160, a U-shaped mounting frame 420 fixed to the outside of the sorting box 100 and located at the outer edge of the limiting hole 160, and a telescopic electric cylinder 430 fixedly mounted on the U-shaped mounting frame 420 and whose piston rod end is fixedly connected to the top plate 410. Specifically, in this embodiment, the pre-sorted bottles are fed one by one from the feed inlet 110 onto the conveyor belt 200 inside the sorting bin 100 by vibration output using the existing device. During the conveying process, the PLC controller 500 analyzes and identifies the bottles passing below in real time based on the monitoring of the camera 300. When a plastic bottle with a cap is detected, the system will promptly activate the telescopic electric cylinder 430 and use the top plate 410 to push the capped bottle on the conveyor belt 200 out from the second discharge port 130. After completion, it quickly returns to its original position, while more uncapped bottles are discharged sequentially from the first discharge port 120. This effectively solves the drawback of the existing device's inability to classify and sort capped and uncapped bottles, bringing convenience to subsequent processes, improving sorting efficiency, and reducing operating costs.

[0025] As a preferred option, multiple soft-light lamps 700 are further installed on the inner top of the sorting bin 100. It is understood that, since the sorting bin 100 is a semi-enclosed structure, the soft-light lamps 700 reduce glare from the plastic bottles while improving the monitoring and shooting effect of the camera 300, resulting in more accurate sorting, in order to provide a better monitoring and shooting environment for the camera 300.

[0026] Preferably, the sorting compartment 100 further includes an inspection port on at least one side of its exterior, and a corresponding inspection plate 140. The inspection plate 140 is also equipped with an observation window 150 with transparent glass. It is understood that the second discharge port 130 can be located on the inspection plate 140 or on the outside of the sorting compartment 100 itself; there is no limitation on this. Furthermore, personnel can observe the sorting process inside the compartment at any time through the observation window 150.

[0027] In summary, the intelligent sorting device for recycled PET bottles of this embodiment, when in use, uses existing devices to initially sort the bottles and then vibrates them to guide the mixed bottles one by one from the feed inlet 110 onto the conveyor belt 200 inside the sorting bin 100. During the conveying process, the PLC controller 500 analyzes and identifies the bottles passing below in real time based on the monitoring of the camera 300. When a plastic bottle with a cap is detected, the system will promptly activate the telescopic electric cylinder 430 and use the top plate 410 to push the capped bottle on the conveyor belt 200 out from the second discharge port 130. After completion, it quickly returns to its original position, while more uncapped bottles are discharged sequentially from the first discharge port 120. This effectively solves the drawback of existing devices that cannot classify and sort capped and uncapped bottles, bringing convenience to subsequent processes, improving sorting efficiency, and reducing operating costs.

[0028] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A smart sorting device for waste PET bottles for recycling plastic, characterized by, The application relates to a sorting device, which comprises a sorting box cabin (100) having a feeding port (110) at one end and a first discharging port (120) away from the feeding port (110), a conveying belt (200) arranged at the lower end inside the sorting box cabin (100) along the length direction, the input end of the conveying belt (200) corresponding to the feeding port (110) and the output end corresponding to the first discharging port (120), a camera (300) arranged above the middle position inside the sorting box cabin (100), a second discharging port (130) arranged at one side of the middle part of the sorting box cabin (100) and located in the output end direction of the camera (300), and a discharging pushing assembly (400) corresponding to the second discharging port (130) arranged at one side of the sorting box cabin (100), wherein the bottle caps and bottles on the conveying belt (200) are pushed out of the sorting box cabin (100) from the second discharging port (130) through the discharging pushing assembly (400). The feeding port (110) corresponds to the output end of the guide shell of an existing device, and the application further comprises a general control terminal, i.e. a PLC controller (500).

2. The intelligent sorting device for waste PET bottles for recycling plastic according to claim 1, characterized in that: The conveying belt (200) has a driving wheel (210) at one end and a driven wheel (220) at the other end, the bottom of the belt surface of the conveying belt (200) is provided with a plurality of supporting roller shafts (230) distributed along the length direction, the driving wheel (210), the driven wheel (220) and the supporting roller shafts (230) are rotatably arranged at the two sides of the sorting box cabin (100), and a servo motor (240) for driving the axial rotation of the driving wheel (210) is further arranged at one side of the sorting box cabin (100).

3. The intelligent sorting device for waste PET bottles for recycling plastic according to claim 1, characterized in that: The sorting box cabin (100) is further provided with a guide inclined plate one (600) located below the feeding port (110) at one end inside the sorting box cabin (100), and further provided with a guide inclined plate two (610) located below the output end of the conveying belt (200) at the other end inside the sorting box cabin (100), and the lower inclined end of the guide inclined plate two (610) is flush with the lower edge of the first discharging port (120). The feeding port (110) is a circular port structure, and the diameter of the feeding port (110) is greater than the diameter of the bottle body by not more than 50 mm.

4. The intelligent sorting device for waste PET bottles for recycling plastic according to claim 1, characterized in that: The sorting box cabin (100) is provided with a limiting hole (160) opposite to the second discharging port (130) at one side. The discharging pushing assembly (400) comprises a top plate (410) located inside the limiting hole (160), a U-shaped mounting frame (420) fixed to the outside of the sorting box cabin (100) and located outside the limiting hole (160), and a telescopic electric cylinder (430) fixedly mounted on the U-shaped mounting frame (420) and having a piston rod end fixedly connected with the top plate (410).

5. The intelligent sorting device for waste PET bottles for recycling plastic according to claim 1, characterized in that: A plurality of soft light illuminating lamps (700) are further arranged at the top inside the sorting box cabin (100).

6. The intelligent sorting device for waste PET bottles for recycling plastic according to claim 1, characterized in that: The sorting box cabin (100) is further provided with an inspection opening at least at one side and an inspection plate (140) corresponding to the inspection opening, and the inspection plate (140) is further provided with an observation window (150) provided with transparent glass.

Images