Waste glass bottle recycling production line and treatment method

Abstract

The invention relates to a waste glass bottle recycling production line and a treatment method, the waste glass bottle recycling production line comprises a conveying table and a chain scraper conveyor, and the conveying table is provided with a rotary mechanical arm, a hot air nozzle, a first steam nozzle and a scraper; the pressure sensor is used for detecting scraper resistance; the label scraping controller is configured to judge that label cleaning is completed when the pressure value detected by the pressure sensor is increased and maintained in a certain value range; when the pressure value detected by the pressure sensor is increased and suddenly decreased within the set label scraping time, it is judged that the label is partially or completely cleaned, and the rotary mechanical arm is controlled to drive the glass bottle to rotate reversely to the initial position and continue to rotate forwards. The label scraping state of the scraper is judged through the pressure sensor and the label scraping controller, so that it is ensured that the scraper can comprehensively and effectively scrape the labels, the label cleaning accuracy and efficiency are improved, and a good foundation is provided for subsequent glass bottle recycling and regeneration treatment.

Description

Technical Field

[0001] This application relates to the technical field of recycling production lines, and particularly relates to a waste glass bottle recycling production line and a processing method. Background Art

[0002] With the development of the economy and the improvement of the consumption level, the generation amount of waste glass bottles is increasing day by day. The recycling of waste glass bottles is an important link in the circular economy. The global annual processing volume exceeds 50 million tons, which can reduce the consumption of virgin materials by 40% and reduce carbon emissions by 25%.

[0003] Generally, waste glass bottles are collected and transported to a recycling factory, and after steps such as cleaning, sorting, crushing, and melting, new glass products are finally made. Currently, high-pressure water guns or ultrasonic cleaning equipment are used to remove surface attachments such as food residues, but the removal effect on label paper and glue is limited. The uncompletely peeled paper labels and residual glue form multi-layer composite materials with glass fragments after being crushed by an eccentric wheel: such as paper-glue-glass mixtures, whose density is close to that of glass, and it is difficult to separate them in subsequent cleaning. And this kind of composite material generates gases such as CO2 and HCl during the melting process due to thermal decomposition, which will cause the glass liquid to foam, and the finished product has defects such as air bubbles and streaks, and the mechanical properties decrease by 15%-20%; and in order to remove impurities, it is necessary to increase the melting temperature or extend the melting time, which will lead to increased energy consumption and decreased production capacity, and the economy is poor.

[0004] In the related technology, the Chinese patent with the application number CN201911028005.4 proposed a waste glass bottle recycling production line and a processing method. The production line includes a chain conveyor, a bottle feeding and cap collecting turntable, a capping machine, a sorting control box, a cylinder pusher, a turning guide rail, a residual liquid collecting box, and a crushing and rinsing machine box. The processing method is as follows: the chain conveyor transports the waste glass bottles to the bottle feeding and cap collecting turntable, and to directly below the capping head of the capping machine. The bottle body fixing cylinder clamps the bottle body of the waste glass bottle, the capping head clamps the bottle cap and caps it. The waste glass bottles with the caps removed are transported to the camera of the sorting control box for taking pictures and sorting according to color recognition, and are pushed into the corresponding turning guide rail to pour out the residual liquid. The waste glass slides into the crushing and rinsing machine box, is crushed by the rotation of the eccentric wheel and squeezed, and is sprayed with water for cleaning. Finally, the glass fragments are collected at the outlet of the glass bottle fragments. The waste glass bottle recycling production line of this invention can automatically recycle and process waste glass bottles of various specifications, reduce the labor intensity of workers, and improve production efficiency.

[0005] The above-mentioned related technology has the following defects: The above production line only realizes transportation and color sorting through a chain conveyor and a sorting control box, and does not set a pretreatment link for surface adhesives such as label paper and tape, resulting in impurities being mixed into the subsequent crushing link. The impurities are mixed with glass fragments after crushing, and may form a composite material that is difficult to separate after being squeezed by an eccentric wheel, affecting the melting quality of recycled glass. Summary of the invention

[0006] In order to improve the problem that the above-mentioned production line has no pretreatment step for the attachments on the bottle surface, resulting in impurities being mixed with glass fragments after crushing and difficult to separate, thus affecting the melting quality of recycled glass, the present application provides a waste glass bottle recycling production line and treatment method.

[0007] The first aspect of the present application provides a waste glass bottle recycling production line adopting the following technical solution: A waste glass bottle recycling production line comprises a conveying platform and a chain conveyor, wherein the conveying platform is provided with: A rotary mechanical arm is used to clamp the glass bottles on the chain conveyor and drive the glass bottles to rotate; A hot air nozzle is installed on the fixed part of the rotary mechanical arm and is used to extend into the glass bottle clamped by the rotary mechanical arm and spray hot air toward the inner wall of the glass bottle; A first steam nozzle is disposed on the conveying platform and is arranged opposite to the hot air nozzle to spray high-temperature steam toward the outer wall of the glass bottle clamped by the rotating mechanical arm, and its spraying direction is opposite to the rotation direction of the glass bottle; A scraper is provided on the conveying platform and is pressed against the outer wall of the glass bottle clamped by the rotating mechanical arm, wherein the scraper is provided on the side of the first steam nozzle facing away from the rotating direction of the glass bottle and is tangential to the rotating direction of the glass bottle; A pressure sensor is provided between the scraper and the conveyor platform and is used to detect the resistance of the scraper when scraping off the label; The scraping controller is connected to the pressure sensor and the rotary mechanical arm, and is configured to determine that the label cleaning is completed when the pressure value detected by the pressure sensor increases and remains within a certain value range within the set scraping time; and when the pressure value detected by the pressure sensor increases and then drops sharply within the set scraping time, it is determined that the label is partially or completely not cleaned, and the rotary mechanical arm is controlled to drive the glass bottle to rotate in the reverse direction to the starting position and continue to control the glass bottle to rotate forward; The scraping time is the time it takes for the scraper to completely pass through the entire width of the label when the glass bottle rotates, and the starting position is the position of the steam nozzle corresponding to the edge of the label on the side opposite to the rotation direction of the glass bottle.

[0008] Furthermore, it also includes: The industrial camera and the rotary robot arm are connected together with a rotary controller, and the rotary controller is configured to determine the edge position of the glass bottle label based on the image of the outer wall of the glass bottle taken by the industrial camera, and control the rotary robot arm to drive the glass bottle to rotate to the starting position.

[0009] Furthermore, it also includes: The second steam nozzle is arranged on the conveying table and its spraying direction points to the tip of the scraper. The second steam nozzle is arranged on the side of the scraper away from the first steam nozzle.

[0010] Furthermore, a label scraping seat is installed on the conveying table. The first steam nozzle is hinged to the label scraping seat. The scraper and the second steam nozzle are installed on the label scraping seat. An angle adjusting component for adjusting the flipping angle of the first steam nozzle is arranged on the label scraping seat. The angle adjusting component and the pressure sensor are jointly connected to an angle adjusting controller. The angle adjusting controller is configured to, when the detected value of the pressure sensor is greater than zero, control the angle adjusting component to drive the first steam nozzle to rotate so that its spraying direction is tangential to the rotation direction of the glass bottle in the reverse direction; and when the detected value of the pressure sensor is zero, control the angle adjusting component to drive the first steam nozzle to rotate so that its spraying direction points to the tip of the cutter on the side away from the second steam nozzle.

[0011] Furthermore, the angle adjusting component includes: An elastic member is arranged at the hinge joint between the first steam nozzle and the label scraping seat. In the initial state, the spraying direction of the first steam nozzle points to the tip of the cutter on the side away from the second steam nozzle. An electromagnet is arranged on the label scraping seat. A permanent magnet corresponding to the electromagnet and magnetically repulsive to the electromagnet after the electromagnet is energized is fixedly connected to the first steam nozzle. The electromagnet is connected to the angle adjusting controller for control. The angle adjusting controller is configured to energize the electromagnet when the detected value of the pressure sensor is greater than zero.

[0012] Furthermore, it further includes: A biological enzymatic hydrolysis tank is arranged on the side of the conveying table away from the scraper, and is used for enzymatically hydrolyzing the remaining labels and glue on the glass bottle after label scraping.

[0013] Furthermore, the industrial camera and the rotary robotic arm are jointly connected to a travel controller. The travel controller is configured to judge whether there are remaining labels and glue on the glass bottle according to the image of the outer wall of the glass bottle captured by the industrial camera, and control the rotary robotic arm to put the glass bottle with remaining labels and glue into the biological enzymatic hydrolysis tank.

[0014] Furthermore, it further includes: A collection box is arranged below the conveying table corresponding to the label scraping seat, and is used for collecting the waste generated during the label removal process. A filter screen for solid-liquid separation of the waste is inclined in the collection box.

[0015] Further, a shielding cover for preventing splashes or steam generated during the label cleaning process from escaping is provided on the inner peripheral wall of the collection box in a lifting manner. A funnel-shaped diversion plate is fixedly connected to the lower end of the shielding cover, and the apex of the cone of the diversion plate is downward. A lifting member for driving the shielding cover to lift is provided on the collection box, and the lifting member is connected to the rotary controller in a controlled manner; When the rotary controller determines that the label cleaning operation starts, it controls the lifting member to drive the shielding cover to rise. When the rotary controller determines that the label cleaning operation is completed, it controls the lifting member to drive the shielding cover to return to the initial position.

[0016] The treatment method of a waste glass bottle recycling and regeneration production line provided in the second aspect of the present application adopts the following technical solutions: A treatment method of a waste glass bottle recycling and regeneration production line includes the following steps: S1. The waste glass bottles are preliminarily classified according to color and shape, non-glass impurities such as metal caps and plastic labels and damaged glass bottles are removed, and the screened waste glass bottles with non-full-coverage paper labels are placed on the chain conveyor; S2. The rotary robotic arm clamps the glass bottle, and the hot air nozzle sprays hot air towards the inner wall of the label corresponding to the clamped glass bottle to soften the glue between the waste glass bottle and the label; S3. The first steam nozzle simultaneously sprays high-temperature steam towards the edge of the label of the glass bottle clamped on the rotary robotic arm, and the scraper is pressed against the outer wall of the glass bottle. Then the rotary robotic arm drives the glass bottle to rotate so that the scraper scrapes the label on the glass surface; S4. During the label scraping process by the scraper, the pressure sensor detects the scraping resistance of the scraper in real time. When the pressure value detected by the pressure sensor increases and remains within a certain value range within the set scraping time, it is determined that the label cleaning is completed; when the pressure value detected by the pressure sensor increases and then drops suddenly within the set scraping time, it is determined that the label is not completely or partially cleaned, and the rotary robotic arm drives the glass bottle to rotate in the reverse direction to the starting position and continues to control the glass bottle to rotate forward; S5. After the label scraping is completed, the rotary robotic arm puts the glass bottle with the remaining label and glue into the bioenzymatic hydrolysis tank for dissolving the residual glue; S6. The rotary robotic arm clamps the next glass bottle and repeats steps S2 to S5.

[0017] In summary, the beneficial technical effects of the present application are as follows: 1. Through the collaborative work of the hot air nozzle, the first steam nozzle and the second steam nozzle, the adhesion force between the label and the glass bottle is effectively reduced, and the label and the adhesive are softened by heat, reducing the difficulty of label cleaning; 2. Through the linkage between the industrial camera and the rotary controller, the scraper can accurately insert into the gap between the label edge and the bottle body at the starting position, ensuring that when the glass bottle rotates driven by the rotary robotic arm, the scraper can comprehensively and effectively scrape the label, thereby improving the accuracy and efficiency of label cleaning; 3. Through the ingenious design of the elastic member and the electromagnet in the angle adjustment assembly, the waste glass bottle recycling and regeneration production line can accurately and automatically adjust the spraying direction of the first steam nozzle according to the actual working state of label cleaning. It can not only provide effective steam assistance during label cleaning, but also thoroughly spray and wash the scraper after cleaning, improving the automation degree and label cleaning quality of the production line and ensuring the stable operation of the production line; 4. Through the coordinated work of the industrial camera, rotary robotic arm, stroke controller, label scraping controller and bioenzymatic hydrolysis tank, the production line can more accurately handle the label and glue residue problems on waste glass bottles, improving the recycling and regeneration quality of waste glass bottles and providing more favorable conditions for subsequent processing processes. Description of the Drawings

[0018] Figure 1 is the overall structural schematic diagram of the initial state of the embodiment of the present application; Figure 2 is Figure 1 the partial enlarged schematic diagram of part A in Figure 3 is the overall structural schematic diagram of the label cleaning state of the application embodiment; Figure 4 is along Figure 1 the partial sectional structural schematic diagram taken along line B-B in Figure 5 is Figure 3 the partial enlarged schematic diagram of part C in

[0019] Description of the Reference Numerals: 1, conveying table; 11, rotary robotic arm; 111, hot air nozzle; 12, industrial camera; 2, chain conveyor; 3, label scraping seat; 31, first steam nozzle; 311, elastic member; 312, permanent magnet; 32, pressure sensor; 33, scraper; 34, second steam nozzle; 35, electromagnet; 4, bioenzymatic hydrolysis tank; 5, collection box; 51, filter screen; 52, lifting member; 6, shielding cover; 61, deflector. Detailed Embodiments

[0020] Next, the technical solutions of the present application will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0021] An embodiment of the present application discloses a waste glass bottle recycling and regeneration production line. Refer to Figure 1 and Figure 2 , a waste glass bottle recycling and regeneration production line includes a conveying table 1 and a chain conveyor 2. The production line of the present application further includes a secondary scrubber, a crushing and screening machine, a melting and forming furnace, etc., which belong to conventional technical means and will not be elaborated here.

[0022] The following are provided on the conveying table 1: A rotary robotic arm 11, which is an electric or pneumatic robotic arm with clamping and rotating functions, belonging to conventional technical means and will not be elaborated here. The rotary robotic arm 11 is used to clamp the mouth part of the glass bottle on the conveyor and drive the glass bottle to rotate forward and backward.

[0023] A hot air nozzle 111, installed on the fixed part of the rotary robotic arm 11 and used to extend into the glass bottle clamped on the rotary robotic arm 11 and spray hot air onto the inner wall of the glass bottle. The hot air it sprays can be 60°C to 100°C, and the lower end surface of the hot air nozzle 111 is lower than the lower end surface of the gripper on the robotic arm.

[0024] A first steam nozzle 31, provided on the conveying table 1 and arranged opposite to the hot air nozzle 111 to spray high-temperature steam onto the glass bottle clamped on the rotary robotic arm 11, and its spraying direction is tangential to the reverse of the glass bottle rotation direction.

[0025] A scraper 33, provided on the conveying table 1 and in tight contact with the outer wall of the glass bottle clamped on the rotary robotic arm 11. The scraper 33 is arranged on the side of the first steam nozzle 31 opposite to the glass bottle rotation direction and tangential to the reverse of the glass bottle rotation direction.

[0026] A pressure sensor 32, provided between the scraper 33 and the conveying table 1 and used to detect the resistance when the scraper 33 scrapes the label.

[0027] A label scraping controller, which is connected to the pressure sensor 32 and the rotary robotic arm 11 in a controlled manner, and is configured to determine that the label cleaning is completed when the pressure value detected by the pressure sensor 32 increases and remains within a certain value range within the set label scraping time; and when the pressure value detected by the pressure sensor 32 increases and then drops suddenly within the set label scraping time, determine that the label is partially or completely not cleaned, control the rotary robotic arm 11 to drive the glass bottle to rotate in the reverse direction to the starting position and continue to control the glass bottle to rotate forward.

[0028] The scraping label time is the duration corresponding to when the scraper 33 completely passes through the entire width of the label while the glass bottle is rotating, and the starting position is the position corresponding to the edge of the label on the side opposite to the rotation direction of the glass bottle where the steam nozzle is located. Additionally, it should be clearly stated that the production line of this application is for processing glass bottles with non-full-wrap paper labels, specifically, the labels on the glass bottles do not completely wrap around the bottle body for one week, and the label has at least two edge parts in the circumferential direction of the glass bottle body.

[0029] In this way, the waste glass bottles with non-full-wrap paper labels after screening are placed on the chain conveyor 2. When the glass bottle reaches the set position, the rotary robotic arm 11 moves downward and clamps the glass bottle; at the same time, the hot air nozzle 111 extends into the interior of the glass bottle and sprays hot air onto the inner wall of the glass bottle to heat and soften the adhesive on the back of the label, reducing the adhesion between the label and the glass bottle, creating favorable conditions for subsequent label cleaning. At the same time, the rotary robotic arm 11 clamps the glass bottle so that the outer wall of the glass bottle is pressed against the scraper 33, and the first steam nozzle 31 sprays high-temperature steam onto the label of the glass bottle clamped by the rotary robotic arm 11 to further soften the label and the adhesive. Then the rotary robotic arm 11 drives the clamped glass bottle to rotate. During the rotation of the glass bottle, the scraper 33 moves tangentially along the outer wall of the glass bottle in the reverse direction relative to the glass bottle to scrape the label on the glass bottle.

[0030] When the scraper 33 scrapes the label on the glass bottle, as the label is gradually scraped off, the resistance between the scraper 33 and the glass bottle will first increase and be detected by the pressure sensor 32. Then, within the set scraping label time, the pressure value detected by the pressure sensor 32 basically remains within a certain value range; when the label is completely cleaned, this pressure value drops to near the initial value, and at this time the scraping label controller determines that the label cleaning is completed.

[0031] When the pressure value detected by the pressure sensor 32 increases and then drops suddenly within the set scraping label time during the scraping process of the scraper 33, it means that the scraper 33 scrapes the label and adheres to the outside of the label at a certain moment, and the scraping label controller determines that the label is not completely cleaned locally or completely; at this time, the scraping label controller controls the rotary robotic arm 11 to drive the glass bottle to rotate in the reverse direction until the scraper 33 reaches the edge position of the label on the side opposite to the rotation direction of the glass bottle, making the glass bottle return to the initial stage of label cleaning, and then continues to control the glass bottle to rotate forward to restart the label cleaning process to ensure that the label can be completely cleaned.

[0032] Through the coordinated work of the above components, the waste glass bottle recycling and regeneration production line can efficiently and accurately clean the labels on the glass bottles, providing a good foundation for subsequent recycling and regeneration treatment of glass bottles, and effectively improving the problem that the above production line does not have a pretreatment link for the attachments on the bottle body surface, resulting in impurities being difficult to separate from the glass fragments after crushing and affecting the melting quality of recycled glass.

[0033] Specifically, refer to Figure 1 and Figure 2 , the conveying platform 1 is also provided with: The industrial camera 12 and the rotary robot arm 11 are connected together with a rotary controller, which is configured to determine the edge position of the glass bottle label based on the image of the outer wall of the glass bottle taken by the industrial camera 12, and control the rotary robot arm 11 to drive the glass bottle to rotate to the starting position.

[0034] The industrial camera 12 is installed on the conveyor 1 at a position higher than the body of the glass bottle, and can clearly capture the image of the outer wall of the glass bottle. When the glass bottle is clamped by the rotary robot arm 11, the industrial camera 12 is started to take pictures of the outer wall of the glass bottle to obtain complete image information including the label; then, the industrial camera 12 transmits the captured image to the image processing system, which identifies and analyzes it to determine the edge position of the glass bottle label; the rotary controller controls the rotary robot arm 11 to work and drives the glass bottle to rotate to the aforementioned starting position according to the edge position of the label determined by the image processing system. It is convenient for the hot air nozzle 111 and the first steam nozzle 31 to accurately heat and soften the label from the edge of the label, and it is convenient for the scraper 33 to be accurately inserted into the gap between the edge of the label and the bottle body at the starting position, ensuring that when the glass bottle rotates under the drive of the rotary robot arm 11, the scraper 33 can scrape the label comprehensively and effectively.

[0035] Therefore, through the cooperation of the industrial camera 12 and the rotary controller, the waste glass bottle recycling production line can more accurately determine the position of the edge of the glass bottle label, and control the rotary robot arm 11 to rotate the glass bottle to the set starting position, thereby improving the accuracy and efficiency of label cleaning.

[0036] And, refer to Figure 1 and Figure 2 , the conveying platform 1 is also provided with: The second steam nozzle 34 is disposed on the conveying platform 1 and its spraying direction points to the tip of the scraper 33 . The second steam nozzle 34 is disposed on a side of the scraper 33 away from the first steam nozzle 31 .

[0037] During the process of scraping the label by the scraper 33, the second steam nozzle 34 simultaneously sprays high-temperature steam onto the body of the glass bottle. Since the spraying direction is toward the tip of the scraper 33, the high-temperature steam can directly impact the label fragments scraped by the scraper 33 and heat the scraping part of the tip of the scraper 33, thereby improving the cleaning effect of the scraper 33 on the softened adhesive and label, making the label and adhesive easier to remove, and effectively reducing the probability of adhesive residue after the label is cleaned.

[0038] And, refer to Figure 1 and Figure 2A scraper seat 3 is installed on the conveying platform 1, a first steam nozzle 31 is hinged on the scraper seat 3, a scraper 33 and a second steam nozzle 34 are installed on the scraper seat 3, an angle adjustment component for adjusting the flip angle of the first steam nozzle 31 is provided on the scraper seat 3, and the angle adjustment component and the pressure sensor 32 are connected to an angle adjustment controller; The angle adjustment controller is configured to control the angle adjustment component to drive the first steam nozzle 31 to rotate so that its spray direction is opposite to the rotation direction of the glass bottle when the pressure sensor 32 detects a value greater than zero; and to control the angle adjustment component to drive the first steam nozzle 31 to rotate so that its spray direction points to the tip of the cutter away from the second steam nozzle 34 when the pressure sensor 32 detects a value of zero.

[0039] By connecting the angle adjustment controller, the pressure sensor 32 and the angle adjustment component, when the pressure sensor 32 detects a value greater than zero, it indicates that the scraper 33 begins to contact the label and generates scraping resistance, indicating that the scraper 33 is ready to enter the scraping operation state. At this time, the angle adjustment controller controls the angle adjustment component to drive the first steam nozzle 31 to rotate, so that its spray direction is opposite to the rotation direction of the glass bottle, and high-temperature steam is sprayed onto the glass bottle, further softening the label glue and using the impact force of the steam to produce a peeling effect on the label, thereby assisting the scraper 33 in cleaning the label.

[0040] When the value detected by the pressure sensor 32 is zero, it means that the scraper 33 is not in contact with the glass bottle and the scraper 33 is in standby mode; at this time, the angle adjustment controller controls the angle adjustment component to drive the first steam nozzle 31 to rotate, so that its spray direction points to the tip of the scraper 33 away from the second steam nozzle 34, and the scraper 33 is sprayed together with the second steam nozzle 34; the impact force and dissolving effect of high-temperature steam are used to remove the residue on the surface of the scraper 33 to ensure the cleanliness of the scraper 33. This can avoid as much as possible that the impurities on the scraper 33 are not cleaned in time and will be attached to the glass bottle again in the subsequent label cleaning process, affecting the cleaning effect, so that the scraper 33 can maintain a good working condition every time the label is scraped off.

[0041] Specifically, refer to Figures 1 to 5 , the angle adjustment components include: The elastic member 311 may be a round spring or a torsion spring, and is provided at the hinge between the first steam nozzle 31 and the scraper seat 3. In this embodiment, the elastic member 311 is provided as a torsion spring. In the initial state, the spray direction of the first steam nozzle 31 points to the tip of the cutter away from the second steam nozzle 34, that is, the scraper 33 is in the state of cleaning.

[0042] The electromagnet 35 is provided on the label scraping seat 3. A permanent magnet 312 corresponding to the electromagnet 35 and magnetically repulsive to the electromagnet 35 after being energized is fixedly connected to the first steam nozzle 31. The electromagnet 35 is controlled and connected to the angle adjustment controller; the angle adjustment controller is configured to control the electromagnet 35 to be energized when the detected value of the pressure sensor 32 is greater than zero.

[0043] When the glass bottle starts to rotate, the label cleaning operation is started, and the pressure sensor 32 detects the resistance of the scraper 33. When the detected value of the pressure sensor 32 is greater than zero, it indicates that the scraper 33 comes into contact with the label and generates scraping resistance. At this time, the angle adjustment controller receives the signal from the pressure sensor 32 and controls the electromagnet 35 on the label scraping seat 3 to be energized; the electromagnet 35 generates a magnetic field, generates a magnetic repulsive force with the permanent magnet 312 and drives the first steam nozzle 31 to rotate by overcoming the torsional deformation force of the elastic member 311, so that the spraying direction of the first steam nozzle 31 is tangential to the rotation direction of the glass bottle in the reverse direction, that is, in the state of softening the label and the adhesive. The first steam nozzle 31 sprays high-temperature steam onto the glass bottle, further softens the label glue and uses the steam impact force to exert a peeling effect on the label, assisting the scraper 33 to clean the label.

[0044] During the label cleaning process, the pressure sensor 32 continuously detects the resistance when the scraper 33 scrapes the label. As long as the detected value of the pressure sensor 32 is greater than zero, the angle adjustment controller keeps the electromagnet 35 energized, so that the spraying direction of the first steam nozzle 31 is continuously tangential to the rotation direction of the glass bottle in the reverse direction, ensuring that the steam continuously plays an auxiliary role in label cleaning.

[0045] When the detected value of the pressure sensor 32 is zero, it indicates that the scraper 33 has moved away from the glass bottle and there is no glass bottle on the label scraping station; at this time, the angle adjustment controller controls the electromagnet 35 to be powered off, and the torsional deformation force of the elastic member 311 drives the first steam nozzle 31 to flip and return to the initial state, that is, the spraying direction points to the tip of the side of the scraper 33 away from the second steam nozzle 34, and sprays and washes the scraper 33 together with the second steam nozzle 34 to remove the residues on the surface of the scraper 33.

[0046] Thus, through the ingenious design of the elastic member 311 and the electromagnet 35 in the angle adjustment assembly, the waste glass bottle recycling and regeneration production line can accurately and automatically adjust the spraying direction of the first steam nozzle 31 according to the actual working state of label cleaning, which can not only provide effective steam assistance during the label cleaning process, but also thoroughly spray and wash the scraper 33 after the cleaning is completed, improving the automation degree of the production line and the label cleaning quality, and ensuring the stable operation of the production line.

[0047] In addition, referring to Figure 1 and Figure 3 , the regeneration production line of the present application further includes: The biological enzymatic hydrolysis tank 4 is filled with a biological enzyme solution mixed with cellulase, protease and lipase. When the glass bottle with residual labels and glue is placed in the biological enzymatic hydrolysis tank 4, the biological enzyme will react chemically with the label and glue. The biological enzyme can decompose the organic components in the label and glue and convert them into water-soluble or easy-to-remove substances. The biological enzymatic hydrolysis tank 4 is arranged on the side of the conveying platform 1 away from the scraper 33, and is used to enzymatically hydrolyze the labels and glue remaining on the glass bottle after scraping the labels.

[0048] And, refer to Figure 1 and Figure 3 The industrial camera 12 and the rotary robot arm 11 are connected to a stroke controller, and the stroke controller is configured to determine whether there are labels and glue remaining on the glass bottle according to the image of the outer wall of the glass bottle taken by the industrial camera 12 after the scraper 33 completes the scraping operation, and control the rotary robot arm 11 to put the glass bottle with labels and glue remaining after the scraping operation into the biological enzymatic hydrolysis tank 4.

[0049] Specifically, after the scraper controller determines that the label cleaning is completed, the industrial camera 12 re-captures the image of the outer wall of the glass bottle and transmits it to the image processing system to analyze and determine the cleanliness of the glass bottle. If it is determined that there are residual labels and glue on the glass bottle, the stroke controller controls the rotary robot arm 11 to change the conveying path of the glass bottle, and puts the glass bottle with residual labels and glue into the biological enzymolysis tank 4. If necessary, the rotary robot arm 11 can also drive the glass bottle to rotate in the biological enzymolysis tank 4 to promote the enzymolysis effect. If it is determined that there are no residual labels and glue on the glass bottle, the rotary robot arm 11 is controlled to convey the glass bottle to the next processing link. Through this collaborative working mode, the production line can more accurately handle the problem of residual labels and glue on waste glass bottles, improve the recycling quality of waste glass bottles, and provide more favorable conditions for subsequent processing processes.

[0050] Among them, the above-mentioned image processing system for identifying the edge of the label on the glass bottle and the image processing system for identifying the cleanliness of the glass bottle are both based on basic image processing and recognition technology. After grayscale, denoising and other processing, the algorithm model formed by deep learning is a common technical means in this field and will not be repeated here.

[0051] At the same time, the conveying platform 1 is also provided with: Collection box 5, see Figures 1 to 5 , arranged below the label scraping seat 3 corresponding to the conveying platform 1, for collecting waste generated during the label removal process, and a filter screen 51 for separating solid and liquid from the waste is arranged obliquely in the collecting box 5.

[0052] The collection box 5 is arranged such that the waste generated during the label cleaning process can accurately fall into the collection box 5, preventing the waste from scattering around the conveyor table 1 and keeping the production line clean. A filter screen 51 is inclined in the collection box 5, with one end of the filter screen 51 higher than the other end. When the waste enters the collection box 5, due to the inclination of the filter screen 51, the liquid will flow downward along the filter screen 51 under the action of gravity and flow into the collection box 5 from the lower end of the filter screen 51, while the solid waste is intercepted by the filter screen 51 and remains above the filter screen 51. In this way, solid-liquid separation of the waste is achieved, facilitating subsequent separate treatment of the solid waste and the liquid.

[0053] In addition, referring to Figures 1 to 5 , a shielding cover 6 for preventing the splashes or steam generated during the label removal process from escaping is arranged to be lifted and lowered on the inner peripheral wall of the collection box 5. It is made of a transparent material with a certain flexibility and corrosion resistance, specifically it can be a thin PE or PP plate. A funnel-shaped guide plate 61 is fixedly connected to the lower end of the shielding cover 6. The upper end opening of the funnel-shaped guide plate 61 is larger and is connected to the lower end of the shielding cover 6, and the lower end opening is smaller and is aligned with the filter screen 51 in the collection box 5. When the waste falls into the shielding cover 6, it will slide down along the inclined surface of the funnel-shaped guide plate 61 and finally concentrate on the filter screen 51. An elevating member 52 for driving the shielding cover 6 to lift and lower is arranged on the collection box 5. The elevating member 52 can specifically be a cylinder, an electric push rod, etc. The elevating member 52 is controlled and connected to the rotation controller. When the rotation controller determines that the label cleaning operation starts, it controls the elevating member 52 to drive the shielding cover 6 to rise; when the rotation controller determines that the label cleaning operation is completed, it controls the elevating member 52 to drive the shielding cover 6 to return to the initial position.

[0054] Before the label cleaning operation starts, the elevating member 52 is in the initial state, and the shielding cover 6 is located at a lower position in the collection box 5, without interfering with the placement of the glass bottles and the preliminary preparations for the label cleaning operation.

[0055] When the rotation controller determines that the label cleaning operation starts, it simultaneously controls the elevating member 52 to drive the shielding cover 6 to rise. After the shielding cover 6 rises, most of the upper opening of the collection box 5 is covered, forming a relatively enclosed space. This can effectively prevent the splashes generated during the label removal process from splashing out of the collection box 5 and avoid steam from escaping into the surrounding environment, reducing the pollution of the production environment and the potential harm to the operators.

[0056] After the label cleaning operation is completed, the rotation controller controls the elevating member 52 to work again, causing the shielding cover 6 to return to the initial position to prepare for the next operation. Through this collaborative working method, the production line can not only efficiently clean the labels on the waste glass bottles, but also effectively collect, separate and protect the waste generated during the cleaning process, improving the processing efficiency of the production line and reducing the pollution of the waste to the environment and the harm to the operators.

[0057] The embodiments of the present application disclose a processing method for a waste glass bottle recycling and regeneration production line. Based on the above-mentioned waste glass bottle recycling and regeneration production line, with reference to Figures 1 to 5 , a processing method for a waste glass bottle recycling and regeneration production line includes the following steps: S1. Initially classify the waste glass bottles according to color and shape, remove non-glass impurities such as metal caps and plastic labels and damaged glass bottles, and place the screened waste glass bottles with non-full-wrap paper labels on the chain conveyor 2; S2. The rotary robotic arm 11 clamps the glass bottle, and the hot air nozzle 111 sprays hot air towards the inner wall of the label corresponding to the clamped glass bottle to soften the glue between the waste glass bottle and the label; S3. The first steam nozzle 31 simultaneously sprays high-temperature steam towards the edge of the label of the glass bottle clamped on the rotary robotic arm 11, and the scraper 33 is pressed against the outer wall of the glass bottle. Then the rotary robotic arm 11 drives the glass bottle to rotate so that the scraper 33 scrapes the label on the glass surface; S4. During the label scraping process of the scraper 33, the pressure sensor 32 detects the scraping resistance of the scraper 33 in real time. When the pressure value detected by the pressure sensor 32 increases and remains within a certain value range within the set label scraping time, it is determined that the label cleaning is completed; when the pressure value detected by the pressure sensor 32 increases and then drops suddenly within the set label scraping time, it is determined that the label is partially or completely not cleaned, and the rotary robotic arm 11 drives the glass bottle to rotate in the reverse direction to the starting position and continues to control the glass bottle to rotate forward; S5. After the label scraping is completed, the rotary robotic arm 11 places the glass bottle with the remaining label and glue into the bioenzymatic hydrolysis tank 4 for dissolving the residual glue; S6. The rotary robotic arm 11 clamps the next glass bottle and repeats steps S2 to S5.

[0058] The implementation principle of a waste glass bottle recycling and regeneration production line in the embodiments of the present application is as follows: Place the screened waste glass bottles with non-full-wrap paper labels on the chain conveyor 2. When the glass bottle reaches the set position, the rotary robotic arm 11 moves down and clamps the glass bottle; at the same time, the hot air nozzle 111 extends into the glass bottle and sprays hot air towards the inner wall of the glass bottle, so that the adhesive on the back of the label is heated and softened, reducing the adhesion between the label and the glass bottle, creating favorable conditions for subsequent label cleaning. At the same time, the rotary robotic arm 11 clamps the glass bottle so that the outer wall of the glass bottle is pressed against the scraper 33, and the first steam nozzle 31 sprays high-temperature steam onto the label of the glass bottle clamped on the rotary robotic arm 11 to further soften the label and the adhesive. Then the rotary robotic arm 11 drives the clamped glass bottle to rotate, and during the rotation of the glass bottle, the scraper 33 moves tangentially in the reverse direction along the outer wall of the glass bottle to scrape the label on the glass bottle.

[0059] When the scraper 33 scrapes the label on the glass bottle, as the label is gradually scraped off, the resistance between the scraper 33 and the glass bottle will first increase and be detected by the pressure sensor 32. Then, within the set label scraping time, the pressure value detected by the pressure sensor 32 basically remains within a certain value range. When the label is completely cleaned, the pressure value drops to near the initial value, and at this time, the label scraping controller determines that the label cleaning is completed.

[0060] When the scraper 33 is scraping the label, if the pressure value detected by the pressure sensor 32 increases and then drops suddenly within the set label scraping time, it means that the scraper 33 tears the label at a certain moment and adheres to the outside of the label. The label scraping controller determines that the label is not completely cleaned, either partially or completely. At this time, the label scraping controller controls the rotary robotic arm 11 to drive the glass bottle to rotate in the reverse direction until the scraper 33 reaches the edge position of the label on the side opposite to the rotation direction of the glass bottle, so that the glass bottle returns to the initial stage of label cleaning. Then, it continues to control the glass bottle to rotate forward and starts the label cleaning process again to ensure that the label can be completely cleaned.

[0061] Through the coordinated work of the above components, the waste glass bottle recycling and regeneration production line can efficiently and accurately clean the labels on the glass bottles, providing a good foundation for the subsequent recycling and regeneration treatment of glass bottles, and effectively improving the problem that the above production line does not have a pretreatment link for the attachments on the bottle body surface, resulting in the difficulty of separating impurities from glass fragments after crushing and affecting the melting quality of recycled glass.

[0062] Unless otherwise defined, the technical terms or scientific terms used in this application shall have the ordinary meanings understood by those of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "a" or "an" and similar terms do not indicate a quantity limitation, but mean that there is at least one. The words "including" or "comprising" and similar terms mean that the elements or objects appearing before "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. The terms "up", "down", "left", "right" etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationships may also change accordingly.

[0063] The above are all preferred embodiments of this application. Without limiting the protection scope of this application accordingly, therefore: Any equivalent changes made according to the structure, shape and principle of this application shall be covered within the protection scope of this application.

Claims

1. A waste glass bottle recycling production line, characterized in that: It includes a conveying platform and a chain conveyor, and the conveying platform is provided with: A rotary mechanical arm is used to clamp the glass bottles on the chain conveyor and drive the glass bottles to rotate; A hot air nozzle is installed on the fixed part of the rotary mechanical arm and is used to extend into the glass bottle clamped by the rotary mechanical arm and spray hot air toward the inner wall of the glass bottle; A first steam nozzle is disposed on the conveying platform and is arranged opposite to the hot air nozzle to spray high-temperature steam toward the outer wall of the glass bottle clamped by the rotating mechanical arm, and its spraying direction is opposite to the rotation direction of the glass bottle; A scraper is provided on the conveying platform and is pressed against the outer wall of the glass bottle clamped by the rotating mechanical arm, wherein the scraper is provided on the side of the first steam nozzle facing away from the rotating direction of the glass bottle and is tangential to the rotating direction of the glass bottle; A pressure sensor is provided between the scraper and the conveyor platform and is used to detect the resistance of the scraper when scraping off the label; The scraping controller is connected to the pressure sensor and the rotary mechanical arm, and is configured to determine that the label cleaning is completed when the pressure value detected by the pressure sensor increases and remains within a certain value range within the set scraping time; and when the pressure value detected by the pressure sensor increases and then drops sharply within the set scraping time, it is determined that the label is partially or completely not cleaned, and the rotary mechanical arm is controlled to drive the glass bottle to rotate in the reverse direction to the starting position and continue to control the glass bottle to rotate forward; The scraping time is the time it takes for the scraper to completely pass through the entire width of the label when the glass bottle rotates, and the starting position is the position of the steam nozzle corresponding to the edge of the label on the side opposite to the rotation direction of the glass bottle.

2. The waste glass bottle recycling production line according to claim 1 is characterized in that: Also includes: The industrial camera and the rotary robot arm are connected together with a rotary controller, and the rotary controller is configured to determine the edge position of the glass bottle label based on the image of the outer wall of the glass bottle taken by the industrial camera, and control the rotary robot arm to drive the glass bottle to rotate to the starting position.

3. The waste glass bottle recycling production line according to claim 2 is characterized in that: Also includes: The second steam nozzle is arranged on the conveying platform and its spraying direction points to the tip of the scraper. The second steam nozzle is arranged on the side of the scraper away from the first steam nozzle.

4. The waste glass bottle recycling production line according to claim 3 is characterized in that: A scraper seat is installed on the conveying platform, the first steam nozzle is hinged on the scraper seat, the scraper and the second steam nozzle are installed on the scraper seat, and an angle adjustment component for adjusting the flip angle of the first steam nozzle is provided on the scraper seat, and the angle adjustment component and the pressure sensor are connected to an angle adjustment controller; The angle adjustment controller is configured to control the angle adjustment component to drive the first steam nozzle to rotate so that its spraying direction is opposite to the rotation direction of the glass bottle when the value detected by the pressure sensor is greater than zero; And when the pressure sensor detects a value of zero, the angle adjustment component is controlled to drive the first steam nozzle to rotate so that its spraying direction points to the tip of the cutter away from the second steam nozzle.

5. The waste glass bottle recycling production line according to claim 4 is characterized in that: The angle adjustment component comprises: An elastic member is provided at the hinged joint between the first steam nozzle and the scraper seat, and in an initial state, the spray direction of the first steam nozzle points to the tip of the cutter away from the second steam nozzle; The electromagnet is arranged on the scraper seat, and a permanent magnet which is arranged corresponding to the electromagnet and magnetically repels the electromagnet when energized is fixedly connected to the first steam nozzle. The electromagnet is control-connected to the angle adjustment controller; the angle adjustment controller is configured to control the electromagnet to be energized when the value detected by the pressure sensor is greater than zero.

6. A waste glass bottle recycling production line according to any one of claims 2 to 5, characterized in that: Also includes: The biological enzymatic hydrolysis tank is arranged on the side of the conveying platform away from the scraper, and is used for enzymatically hydrolyzing the labels and glue remaining on the glass bottles after the labels are scraped off.

7. The waste glass bottle recycling production line according to claim 6 is characterized in that: The industrial camera and the rotary robotic arm are jointly connected to a stroke controller, which is configured to determine whether there are labels and glue remaining on the glass bottle based on the image of the outer wall of the glass bottle taken by the industrial camera, and control the rotary robotic arm to place the glass bottle with labels and glue remaining on it into the biological enzymatic hydrolysis tank.

8. The waste glass bottle recycling production line according to claim 4 is characterized in that: Also includes: The collecting box is arranged below the conveying platform corresponding to the scraping seat, and is used to collect waste generated during the label removal process. A filter screen for separating solid and liquid from the waste is obliquely arranged in the collecting box.

9. The waste glass bottle recycling production line according to claim 8 is characterized in that: The inner wall of the collection box is provided with a shielding cover for preventing splashes or steam generated during the label removal process from escaping, the lower end of the shielding cover is fixedly connected with a funnel-shaped guide plate, the cone top of the guide plate is set downward, and the collection box is provided with a lifting member for driving the shielding cover to rise and fall, and the lifting member is connected to the control of the rotary controller; When the rotary controller determines that the label cleaning operation starts, the lifting member is controlled to drive the shielding cover to rise. When the rotary controller determines that the label cleaning operation is completed, the lifting member is controlled to drive the shielding cover to return to the initial position.

10. A processing method for a waste glass bottle recycling production line, based on a waste glass bottle recycling production line as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Preliminarily classify the waste glass bottles by color and shape, remove non-glass impurities such as metal caps, plastic labels and broken glass bottles, and place the screened waste glass bottles with non-full-cover paper labels on the chain conveyor; S2. The rotary robot arm clamps the glass bottle, and the hot air nozzle sprays hot air toward the inner wall of the label corresponding to the clamped glass bottle to soften the glue between the waste glass bottle and the label; S3. The first steam nozzle simultaneously sprays high-temperature steam to the edge of the label of the glass bottle clamped by the rotary robot arm, and the scraper is pressed against the outer wall of the glass bottle, and then the rotary robot arm drives the glass bottle to rotate so that the scraper scrapes off the label on the glass surface; S4. During the scraping process, the pressure sensor detects the scraping resistance of the scraper in real time. When the pressure value detected by the pressure sensor increases and remains within a certain value range within the set scraping time, it is determined that the label cleaning is completed; when the pressure value detected by the pressure sensor increases and drops sharply within the set scraping time, it is determined that the label is partially or completely not cleaned, and the rotary robot arm drives the glass bottle to rotate in the reverse direction to the starting position and continues to control the glass bottle to rotate forward; S5. After the scraping is completed, the rotary robot arm places the glass bottle with the remaining label and glue into a biological enzymatic hydrolysis tank for dissolving the residual glue; S6. The rotating robot arm clamps the next glass bottle and repeats steps S2 to S5.

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