PET bottle body label removing device

Abstract

The invention relates to the technical field of plastic recycling, and discloses a PET bottle body label removing device which comprises a machine body, pretreatment mechanisms for pretreating bottle body labels are arranged on the two sides of the outer wall of the machine body correspondingly, and softening mechanisms for softening the bottle body labels are arranged outside the pretreatment mechanisms. A discharging mechanism for conveying pretreated bottle bodies out is arranged on one side of the outer wall of the machine body, the bottles can be flattened before entering the label removing machine through extrusion of an extrusion plate and exhaust thorns, the flattened bottles can make contact with the area of blades of the label removing machine larger than the area of the flattened bottles which are irregularly shaped after being recycled, and therefore the label removing machine is more convenient to use. And meanwhile, in order to prevent the situation that residues exist at the positions, with mucilage glue, of the sticking positions of the labels when the blades scrape the labels, the brush can rotate while the bottles are flattened, a spray head can spray out liquid for softening the labels, and therefore the blades of the label removing machine can better scrape the labels.

Description

Technical Field

[0001] The invention relates to the technical field of plastic recycling, in particular to a device for removing labels from PET bottles. Background Art

[0002] In the patent application with application publication number CN113910496A, a scraper is included, wherein the left end of the scraper is movably connected to a clamping plate, the left end of the clamping plate is movably connected to a temperature conducting rod, the left end of the temperature conducting rod is movably connected to a heat conducting wire, the left end of the heat conducting wire is movably connected to a transmission air cavity, the left end of the transmission air cavity is movably connected to a constant pressure piston, and the left end of the constant pressure piston is movably connected to a transmission rod.

[0003] The advantages are: the temperature of the plastic bottle continues to rise, which increases the pressure in the transmission air cavity, thereby driving the transmission rod to move, and the movement of the transmission rod pulls the rotating rope. After the rotating rope is pulled, it drives the rotating rod to rotate, and the rotation of the rotating rod drives the rotating platform to rotate. The rotation of the rotating platform drives the plastic bottle to rotate. During the rotation, the scraper will peel off the label, thereby achieving the effect of automatically peeling off the label on the surface of the plastic bottle.

[0004] At present, to remove the label on the PET bottle, the bottle with the label must first be soaked in a material pool with a solution to soften the label on the bottle. The bottle with the softened label will be directly placed in the conveyor belt of the label stripping machine for separation. However, some of the recycled bottles are flat and have no air inside, while others have air inside. After entering the label stripping machine, the bottles with air will increase the elastic force generated by the collision with the blade of the label stripping machine. This results in most of the bottles still having some labels after the label stripping is completed, and a small part of the labels are not even detached. Some manufacturers will ask workers to manually flatten the recycled bottles, which will be conducive to complete label stripping. However, the efficiency of such screening is too low, and the bottles with air are limited by the bottle caps, which will also cause a very small air explosion if the extrusion equipment is used for batch extrusion. At the same time, long-term use will also bring a burden to the extrusion equipment. Even if it enters the high-speed rotating label stripping machine, it will only smash the bottle body, and it cannot solve the problem of residual labels. Moreover, the discharged bottles are easy to accumulate due to their different sizes, resulting in the need to clear new space at the discharge point soon. Summary of the invention

[0005] The problem to be solved by the present invention is that after the label removal of the bottle body is completed, the label still remains and the bottle body needs to be soaked in a solution to soften the label before entering the label removal machine, resulting in low efficiency.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a PET bottle label removal device, comprising a body, both sides of the outer wall of the body are provided with a pretreatment mechanism for pretreatment of the bottle label, the outside of the pretreatment mechanism is provided with a softening mechanism for softening the bottle label, one side of the outer wall of the body is provided with a discharging mechanism for transmitting the pretreated bottle body, the body comprises a frame, the inner wall of the frame is provided with a conveyor belt, the bottom of the inner wall of the frame is provided with a water channel, the outer wall of the frame is provided with, the pretreatment mechanism includes an installation The hydraulic cylinders on both sides of the outer wall of the machine body, the output ends of the hydraulic cylinders are connected to extrusion plates, the outer walls of the extrusion plates are provided with exhaust thorns, the outer walls of the exhaust thorns are provided with a cavity, the bottom of the outer wall of the extrusion plate is movably mounted with a bottom wheel, the outer wall of the bottom wheel is installed with a force amplifying ring, the material of the force amplifying ring is rubber, the inner wall of the bottom wheel is connected with a driving sprocket through a coupling, the inner wall of the extrusion plate is provided with a chain, the inner wall of the chain is movably mounted with a driven sprocket, the outer wall of the driven sprocket is installed with a brush through a coupling, and one side of the outer wall of the extrusion plate is connected with a baffle.

[0007] Preferably, the softening mechanism includes a liquid inlet box installed on the top of the outer wall of the extrusion plate, the liquid inlet boxes are all installed on the outer wall of the extrusion plate, a trigger rod is installed on the top of the outer wall of the liquid inlet box on one side, a sensor is installed on the top of the outer wall of the liquid inlet box on the other side, the outer wall of the liquid inlet box on one side is provided with a nozzle, the inner wall of the liquid inlet box is connected to a hose, one end of the hose is connected to a booster pump, and one side of the booster pump is connected to a liquid storage cylinder.

[0008] Preferably, the discharging mechanism includes a feed box installed on one side of the outer wall of the frame, a water wheel is movably installed on the inner wall of the feed box, a movable plate is movably installed on the bottom of the water wheel, a telescopic rod is installed on the bottom of the outer wall of the movable plate, a spring is installed around the outer wall of the telescopic rod, and a discharge port is opened on one side of the outer wall of the feed box.

[0009] Preferably, the exhaust thorn is conical in a three-dimensional view, and a cavity is formed on the outer wall of the exhaust thorn, and the cavity of the exhaust thorn is parallel to the outer wall of the exhaust thorn.

[0010] Preferably, the tooth grooves of the driving sprocket are meshed with the chain, and the tooth grooves of the driven sprocket are meshed with the chain.

[0011] Preferably, the installation position of the hydraulic cylinder is inclined, and the extrusion plate connected to the output end of the hydraulic cylinder is upright.

[0012] Preferably, the trigger rod and the sensor are installed symmetrically, and the sensor is electrically connected to the boost pump through an electrical signal.

[0013] Preferably, one end of the water channel is communicated with the top of the inner wall of the feed box, and one end of the water channel is located at the bottom of the inner wall of the feed box and a water wheel is movably installed via a rotating shaft.

[0014] Compared with the prior art, the technical solution of the present invention has the following advantages: (1) The present invention utilizes the squeezing of the squeezing plate and the exhaust barbs to flatten the bottles before they enter the label stripping machine. Compared with the irregularly shaped bottles after recycling, the flattened bottles can contact a larger area of ​​the label stripping machine blade. At the same time, in order to prevent the adhesive residue at the label pasting place from being left when the blade is scraped, the brush will rotate and the nozzle will spray the label softening liquid while the bottle is being flattened, so that the label will be initially softened and separated, so that the label stripping machine blade can better scrape off the label, thereby greatly reducing the probability of label residue, and also eliminating the step of soaking and softening the label before label stripping, greatly saving the time required for label stripping, thereby increasing the efficiency of label stripping, while saving labor costs, and further increasing the efficiency and quality of label stripping; (2) The present invention flattens the bottles, thereby greatly reducing the volume of the bottles after label removal. At the same time, the softened liquid is reused. When the traditional label removal machine discharges the bottles, the bottles tend to pile up. Since the bottles are of different sizes and have air inside, the bottles need to be cleaned after a period of time. The present invention can pre-treat the bottles before label removal, so that the bottles after label removal are small in size and easier to store. In order to prevent waste of liquid, the present invention can also guide the liquid to the feed box for secondary immersion and softening. As the weight increases, the liquid and the bottles can be automatically discharged at the discharge port, so that the time for the bottles to enter the label removal machine is not delayed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the softening mechanism of the present invention; Figure 3 It is a schematic diagram of the structure of the chain and sprocket of the present invention; Figure 4 It is a schematic diagram of the external structure of the extruded plate of the present invention; Figure 5 It is a schematic diagram of the connection structure between the driven sprocket and the brush of the present invention; Figure 6 A schematic diagram of the position structure of the trigger rod and the sensor of the present invention; Figure 7 It is a schematic diagram of the structure of the water channel of the present invention; Figure 8 It is a schematic diagram of the connection position structure of the hydraulic cylinder and the extrusion plate of the present invention; Fig. 9 This is a schematic diagram of the structure of the exhaust thorn of the present invention; Fig.10 It is a structural schematic diagram of the movable plate of the present invention; Fig.11 It is a structural schematic diagram of the water wheel of the present invention; Fig.12 It is a schematic diagram of the split structure of the bottom wheel of the present invention; Fig.13 For the present invention Figure 3 A partial enlarged schematic diagram of the marked A.

[0016] In the figure: 1. machine body; 101. frame; 102. conveyor belt; 103. water channel; 104. baffle; 2. pre-treatment mechanism; 201. hydraulic cylinder; 202. extrusion plate; 203. exhaust thorn; 204. bottom wheel; 205. force amplification ring; 206. driving sprocket; 207. chain; 208. driven sprocket; 209. brush; 210. baffle; 3. softening mechanism; 301. liquid inlet box; 302. trigger rod; 303. sensor; 304. nozzle; 305. hose; 306. booster pump; 307. liquid storage cylinder; 4. discharging mechanism; 401. feeding box; 402. water wheel; 403. movable plate; 404. telescopic rod; 405. spring; 406. discharging port. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0018] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. "Include" or "comprise" and other similar words used in the present disclosure mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] like Figures 1 to 13As shown, a PET bottle label removal device provided by the present invention comprises a body 1, both sides of the outer wall of the body 1 are provided with a pretreatment mechanism 2 for pretreatment of the bottle label, the outside of the pretreatment mechanism 2 is provided with a softening mechanism 3 for softening the bottle label, one side of the outer wall of the body 1 is provided with a discharging mechanism 4 for transmitting the pretreated bottle body, the body 1 comprises a frame 101, the inner wall of the frame 101 is provided with a conveyor belt 102, the bottom of the inner wall of the frame 101 is provided with a water channel 103, the outer wall of the frame 101 is installed with 104, the pretreatment mechanism 2 comprises a hydraulic cylinder 201 installed on both sides of the outer wall of the body 1, the output end of the hydraulic cylinder 201 is connected to an extrusion plate 202, the outer wall of the extrusion plate 202 is provided with an exhaust thorn 203, the outer wall of the exhaust thorn 203 is provided with a cavity, and the exhaust thorn 203 will remove the bottle with air The bottle is punctured because the outer wall of the exhaust thorn 203 is provided with a cavity. After the bottle is squeezed and punctured, the air will be discharged through the cavity of the exhaust thorn 203. A bottom wheel 204 is movably installed at the bottom of the outer wall of the extrusion plate 202, and a force-enhancing ring 205 is installed on the outer wall of the bottom wheel 204. The material of the force-enhancing ring 205 is rubber. The rubber force-enhancing ring 205 arranged on the outer wall of the bottom wheel 204 can increase the friction between the bottom wheel 204 and the outer wall of the conveyor belt 102, so that the conveyor belt 102 can drive the bottom wheel 204 to rotate when it moves. The inner wall of the bottom wheel 204 is connected with a driving sprocket 206 through a coupling, and the inner wall of the extrusion plate 202 is provided with a chain 207. A driven sprocket 208 is movably installed on the inner wall of the chain 207. A brush 209 is installed on the outer wall of the driven sprocket 208 through a coupling, and a baffle 210 is connected to one side of the outer wall of the extrusion plate 202.

[0020] The softening mechanism 3 includes a liquid inlet box 301 installed on the top of the outer wall of the extrusion plate 202. The liquid inlet boxes 301 are all installed on the outer wall of the extrusion plate 202. A trigger rod 302 is installed on the top of the outer wall of the liquid inlet box 301 on one side, and a sensor 303 is installed on the top of the outer wall of the liquid inlet box 301 on the other side. A nozzle 304 is arranged on the outer wall of the liquid inlet box 301 on one side, and a hose 305 is connected to the inner wall of the liquid inlet box 301. One end of the hose 305 is connected to a booster pump 306, and one side of the booster pump 306 is connected to a liquid storage cylinder 307.

[0021] The discharging mechanism 4 includes a feed box 401 installed on one side of the outer wall of the frame 101, a water wheel 402 is movably installed on the inner wall of the feed box 401, a movable plate 403 is movably installed on the bottom of the water wheel 402, a telescopic rod 404 is installed on the bottom of the outer wall of the movable plate 403, a spring 405 is installed around the outer wall of the telescopic rod 404, and a discharge port 406 is opened on one side of the outer wall of the feed box 401.

[0022] The three-dimensional view of the exhaust thorn 203 is conical, and a cavity is opened on the outer wall of the exhaust thorn 203. The cavity of the exhaust thorn 203 is parallel to the outer wall of the exhaust thorn 203. There are two symmetrical extrusion plates 202. The extrusion plate 202 on one side is provided with the exhaust thorn 203 and the brush 209, and the exhaust thorn 203 on the other side is only provided with the brush 209 and the cavity adapted to the exhaust thorn 203.

[0023] The tooth grooves of the driving sprocket 206 mesh with the chain 207 , and the tooth grooves of the driven sprocket 208 mesh with the chain 207 . When the driving sprocket 206 rotates, the chain 207 is driven to move, and when the chain 207 moves, the driven sprocket 208 is driven to rotate.

[0024] The installation position of the hydraulic cylinder 201 is inclined, and the extrusion plate 202 connected to the output end of the hydraulic cylinder 201 is upright. Since the hydraulic cylinder 201 is installed at an angle, the moving trajectory of the extrusion plate 202 is an inclined trajectory. Only when the extrusion plates 202 are in contact with each other, the bottom wheel 204 at the bottom of the outer wall of the extrusion plate 202 will contact the outer wall of the conveyor belt 102.

[0025] The installation positions of the trigger rod 302 and the sensor 303 are symmetrical. The sensor 303 is electrically connected to the booster pump 306 through an electrical signal. After being triggered, the sensor 303 transmits the electrical signal to the booster pump 306 to start the booster pump 306. After starting, the booster pump 306 will draw liquid for softening the label into the liquid storage cylinder 307.

[0026] One end of the water channel 103 is connected to the top of the inner wall of the feed box 401. One end of the water channel 103 is located at the bottom of the inner wall of the feed box 401 and a water wheel 402 is movably installed through a rotating shaft. The bottle entering the feed box 401 will fall on the outer wall of the water wheel 402, and the liquid will also drip on the outer wall of the water wheel 402. The weight of the liquid will press the water wheel 402 to make the water wheel 402 rotate.

[0027] The working principle and use process of the present invention are as follows: first, the user places the bottles on the conveyor belt 102, and then the bottles are concentratedly moved from the middle section of the outer wall of the conveyor belt 102 through the limit of 104. Then the user starts the hydraulic cylinder 201. When the hydraulic cylinder 201 is started, it will drive the two squeezing plates 202 to move. When the squeezing plates 202 move, they will squeeze the bottles on the outer wall of the conveyor belt 102. When the squeezing plates 202 squeeze the bottles, the exhaust spikes 203 will puncture the bottles with air, because the outer wall of the exhaust spikes 203 is provided with a cavity. After the bottles are squeezed and punctured, the air will be discharged through the cavity of the exhaust spikes 203, so that the bottles are all pressed into a flat shape. At the same time, when the squeezing plates 202 move, they will drive the baffles 210 to move. When the two squeezing plates 202 are fitted together, the baffles 210 will also fit together to block subsequent bottles from entering, and because the hydraulic cylinder 201 is inclined The bottom wheel 204 is installed so that the movement track of the extrusion plate 202 is an inclined track. Only when the extrusion plates 202 are attached to each other, the bottom wheel 204 at the bottom of the outer wall of the extrusion plate 202 will contact the outer wall of the conveyor belt 102. The rubber force-enhancing ring 205 arranged on the outer wall of the bottom wheel 204 can increase the friction between the bottom wheel 204 and the outer wall of the conveyor belt 102, so that the conveyor belt 102 can drive the bottom wheel 204 to rotate when it moves. When the bottom wheel 204 rotates, it drives the driving sprocket 206 connected to it through a coupling to rotate. When the driving sprocket 206 rotates, it drives the chain 207 to move. When the chain 207 moves, it drives the driven sprocket 208 to rotate. Since the inner wall of the driven sprocket 208 is connected to the brush 209 through the coupling, the brush 209 can rotate, and the brush 209 can perform preliminary separation of the labels on the bottles when it rotates. Secondly, when the squeezing plates 202 are pressed against each other to squeeze the bottle, the trigger rod 302 arranged on the outer wall of the liquid inlet box 301 at the top of the squeezing plate 202 will touch the sensor 303 at the top of the other squeezing plate 202. After being triggered, the sensor 303 will transmit an electrical signal to the booster pump 306 to start the booster pump 306. After starting, the booster pump 306 will draw liquid for softening the label into the liquid storage cylinder 307, discharge it into the liquid inlet box 301 through the hose 305, and then spray it onto the bottle through the nozzle 304. At this time, the rotation of the brush 209 and the spraying of the nozzle 304 form a coordination, so that the label on the bottle can be softened and separated at the adhesive part while softening, so that the label of the bottle becomes very easy to peel off after entering the label removal machine later, and the dripping liquid will enter the outer wall of the water channel 103 from the outer wall of the conveyor belt 102, and be discharged to the inner wall of the feeding box 401 through the water channel 103, and the bottles processed on the outer wall of the conveyor belt 102 will also be transported to the inner wall of the feeding box 401 through the conveyor belt 102; Finally, the bottles entering the feed box 401 will fall on the outer wall of the water wheel 402, and the liquid will also drip on the outer wall of the water wheel 402. The weight of the liquid will compress the water wheel 402 to make it rotate. When the water wheel 402 rotates, the bottles and the liquid will be discharged at a uniform speed onto the movable plate 403 at the bottom of the inner wall of the feed box 401. In this way, the liquid and the bottles at the bottom of the inner wall of the feed box 401 will be further accumulated, thereby achieving a second soaking, and further softening the labels. Due to the accumulation of weight, the movable plate 403 is compressed, which will drive the telescopic rod 404 and the spring 405 to contract. Since the movable plate 403 is at a certain distance from the discharge port 406, when the movable plate 403 moves to the discharge port 406, the liquid and the bottles will be discharged through the discharge port 406 to the entrance of the label removal machine for label removal.

[0028] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A PET bottle label removal device, comprising a body (1), characterized in that: Pretreatment mechanisms (2) for pretreatment of bottle labels are arranged on both sides of the outer wall of the machine body (1); a softening mechanism (3) for softening the bottle labels is arranged outside the pretreatment mechanism (2); a discharging mechanism (4) for transmitting pretreated bottles is arranged on one side of the outer wall of the machine body (1); the machine body (1) comprises a frame (101); a conveyor belt (102) is arranged on the inner wall of the frame (101); a water channel (103) is arranged at the bottom of the inner wall of the frame (101); a (104) is installed on the outer wall of the frame (101); the pretreatment mechanism (2) comprises a hydraulic cylinder (201) installed on both sides of the outer wall of the machine body (1); an output end of the hydraulic cylinder (201) is connected to an extrusion plate (202) ), the outer wall of the extrusion plate (202) is provided with an exhaust thorn (203), the outer wall of the exhaust thorn (203) is provided with a cavity, a bottom wheel (204) is movably mounted on the bottom of the outer wall of the extrusion plate (202), a force amplifying ring (205) is mounted on the outer wall of the bottom wheel (204), the material of the force amplifying ring (205) is rubber, the inner wall of the bottom wheel (204) is connected to a driving sprocket (206) via a coupling, a chain (207) is provided on the inner wall of the extrusion plate (202), a driven sprocket (208) is movably mounted on the inner wall of the chain (207), a brush (209) is mounted on the outer wall of the driven sprocket (208) via a coupling, and a baffle (210) is connected to one side of the outer wall of the extrusion plate (202).

2. A PET bottle label removal device according to claim 1, characterized in that: The softening mechanism (3) comprises a liquid inlet box (301) mounted on the top of the outer wall of the extrusion plate (202); the liquid inlet boxes (301) are all mounted on the outer wall of the extrusion plate (202); a trigger rod (302) is mounted on the top of the outer wall of the liquid inlet box (301) on one side; a sensor (303) is mounted on the top of the outer wall of the liquid inlet box (301) on the other side; a nozzle (304) is disposed on the outer wall of the liquid inlet box (301) on one side; a hose (305) is connected to the inner wall of the liquid inlet box (301); one end of the hose (305) is connected to a booster pump (306); and one side of the booster pump (306) is connected to a liquid storage cylinder (307).

3. The PET bottle label removal device according to claim 1, characterized in that: The discharging mechanism (4) comprises a feeding box (401) mounted on one side of the outer wall of the frame (101); a water wheel (402) is movably mounted on the inner wall of the feeding box (401); a movable plate (403) is movably mounted on the bottom of the water wheel (402); a telescopic rod (404) is mounted on the bottom of the outer wall of the movable plate (403); a spring (405) is mounted around the outer wall of the telescopic rod (404); and a discharging port (406) is provided on one side of the outer wall of the feeding box (401).

4. The PET bottle label removal device according to claim 1, characterized in that: The exhaust thorn (203) is conical in a three-dimensional view, and a cavity is provided on the outer wall of the exhaust thorn (203), and the cavity of the exhaust thorn (203) is parallel to the outer wall of the exhaust thorn (203).

5. The PET bottle label removal device according to claim 1, characterized in that: The tooth grooves of the driving sprocket (206) are meshed with the chain (207), and the tooth grooves of the driven sprocket (208) are meshed with the chain (207).

6. The device for removing label from PET bottle according to claim 1, characterized in that: The installation position of the hydraulic cylinder (201) is inclined, and the extrusion plate (202) connected to the output end of the hydraulic cylinder (201) is upright.

7. The device for removing label from PET bottle according to claim 1, characterized in that: The trigger rod (302) and the sensor (303) are installed symmetrically, and the sensor (303) is electrically connected to the booster pump (306) through an electrical signal.

8. The device for removing labels from PET bottles according to claim 1, characterized in that: One end of the water channel (103) is communicated with the top of the inner wall of the feed box (401), and one end of the water channel (103) is located at the bottom of the inner wall of the feed box (401) and is movably mounted with a water wheel (402) via a rotating shaft.

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