A thermoforming device for disposable plastic cups

Abstract

This invention provides a disposable plastic cup thermoforming apparatus, including a plastic cup making machine and an extruder adapted to the feeding end of the plastic cup making machine, and a recycling device installed on top of the plastic cup making machine. The recycling device includes a washing tank, a crushing component, and a screening conveyor, all installed on top of the plastic cup making machine and extending along its direction. The washing tank, crushing component, and screening conveyor are connected sequentially from left to right. The screening conveyor is connected to the input port of the extruder, allowing excess material generated by the plastic cup making machine to be transported back into the extruder through the washing tank, crushing component, and screening conveyor. By cleverly installing the recycling device on top of the plastic cup making machine, the need for first winding up excess material before recycling, as in the past, is eliminated. This change significantly reduces the labor intensity of workers.

Description

Technical Field

[0001] This invention relates to the field of plastic cup processing technology, specifically a thermoforming device for disposable plastic cups. Background Technology

[0002] Thermoforming is a two-stage forming technology that uses thermoplastic sheets as raw materials (the sheets can be extruded or calendered). First, the sheet is cut into blanks of a specific size and shape. Then, the blanks are clamped in a frame and heated to a softening temperature, i.e., a highly elastic and plastic state. Pressure is then applied to bend and stretch the blanks, and after reaching a certain shape, they are cooled and solidified into open, thin-shell products. The pressure applied to the blanks during thermoforming is, in most cases, achieved through vacuuming and compressed air (the pressure difference created between the two sides of the blank, but various forms of mechanical or hydraulic pressure can also be used).

[0003] Chinese patent disclosure CN213382446U discloses a "waste recycling device used in the production of plastic products". The invention includes a base plate and a cleaning tank fixedly installed on one side of the top of the base plate. Support legs are fixedly welded to the four corners of the bottom of the base plate. Multiple sets of support rods are arranged in a rectangular array on the top side of the base plate away from the cleaning tank. Protective boxes are fixedly welded to the top of the multiple sets of support rods. A rectangular groove for connecting a collection hopper is opened at the top of the protective box. A working chamber is opened inside the support rod, and a screening plate is fixedly installed inside the working chamber. This waste and scrap recycling device used in the production of plastic products can compress the waste and scrap to be crushed, facilitating the crushing roller to crush it. It is easy to use and can also screen the crushed waste and scrap to reduce the dust mixed in, reduce the amount of washing water, and reduce water consumption, thus achieving an environmental protection effect. Chinese patent discloses "A Plastic Production Scrap Recycling Device" (publication number CN221953677U). This application provides a plastic production scrap recycling device, which includes a loading and unloading assembly and a flattening assembly. The loading and unloading assembly includes a processing table, a processing box, a through-hole plate, and an electric push rod, with the push rod located at the bottom of the processing table. The flattening assembly includes a vertical plate, a hydraulic cylinder, a moving plate, a spike, an elastic element, and a pressure plate. The vertical plate is located on the top of the processing table, the hydraulic cylinder is located on one side of the vertical plate, and the moving plate is located at the bottom of the hydraulic cylinder. The processing table, processing box, through-hole plate, and electric push rod are used to support and guide the sliding of the processing box and facilitate loading and unloading. By setting up a vertical plate, hydraulic cylinder, moving plate, spike, elastic element and pressure plate, and having several holes, it can puncture the plastic residue and flatten it at the same time, which is highly efficient. Moreover, the through holes punctured are beneficial to the subsequent recycling process, increasing the contact area with the already molten plastic and improving the melting efficiency.

[0004] While the aforementioned patents achieve the benefits of ease of use and high recycling efficiency, some shortcomings remain. Currently, although there are recycling and reprocessing operations for waste materials from plastic cup production, the devices used are separate units and cannot be directly connected to the plastic cup manufacturing machine. This necessitates manual handling during operation, which is not only cumbersome but also consumes a significant amount of space, ultimately resulting in resource waste. Summary of the Invention

[0005] The purpose of this invention is to provide a thermoforming device for disposable plastic cups, which aims to solve the problem that in the prior art, plastic cups generate leftover material during the production process, and the recycling and reprocessing of this leftover material is cumbersome and takes up a lot of space.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: the disposable plastic cup thermoforming device includes a plastic cup making machine and an extruder adapted to the feeding end of the plastic cup making machine, and a recycling device installed on the top of the plastic cup making machine;

[0007] The recycling device includes a washing tank, a crushing component, and a screening conveyor, all installed on top of the plastic cup making machine and extending along the machine's direction. The washing tank, crushing component, and screening conveyor are connected sequentially from left to right. The screening conveyor is connected to the inlet of the extruder, and the residual material generated by the plastic cup making machine can be transported back into the extruder through the washing tank, crushing component, and screening conveyor.

[0008] The cleaning tank is equipped with several sets of auxiliary rollers that are spaced apart on the left and right. The top of the cleaning tank is equipped with an input roller on the side away from the crushing part. A drive motor that can drive the input roller to rotate is fixed on the outside of the cleaning tank. The top of the cleaning tank is equipped with an output roller on the side close to the crushing part, so that the residual material generated by the plastic cup making machine can be transported to the crushing part through the input roller, auxiliary roller and output roller.

[0009] The screening and conveying component includes a reflux section and a raw material section arranged at intervals. The reflux section can re-crush larger residual materials after crushing, and the raw material section can convey the crushed raw materials into the extruder.

[0010] Preferably, the input roller shaft includes a first roller shaft and a second roller shaft that are rotatably disposed on the top of the cleaning tank;

[0011] The top of the cleaning tank is fixedly provided with an input mounting seat, and the first roller shaft and the second roller shaft are respectively rotatably connected to the corresponding input mounting seat.

[0012] Preferably, the output end of the drive motor is fixedly connected to one end of the first roller shaft;

[0013] A first sprocket is fixedly provided on the other end of the first roller shaft. The first sprocket is connected to a second sprocket via a first chain drive. The second sprocket is fixedly connected to the second roller shaft, so that the first roller shaft and the second roller shaft rotate synchronously.

[0014] Preferably, the auxiliary roller shaft near the second roller shaft is fixedly provided with a third sprocket through the cleaning tank, and the first roller shaft is fixedly provided with a fourth sprocket near the first sprocket. The third sprocket and the fourth sprocket are connected by a second chain drive.

[0015] Preferably, the rear interior of the cleaning tank is provided with a chamber extending in the left-right direction;

[0016] Each of the auxiliary roller shafts is fixedly provided with a fifth sprocket through the chamber, and the fifth sprockets on two adjacent auxiliary roller shafts are connected by a third chain drive.

[0017] The fifth sprocket is located inside the cavity.

[0018] Preferably, the pulverizing component includes a pulverizing shell fixedly disposed on the right side of the cleaning tank and two pulverizing blades rotatably disposed within the pulverizing shell and spaced apart from each other on the left and right.

[0019] The front ends of both of the shredder blades extend through the shredder housing and are fixedly equipped with first gears, and the two first gears mesh with each other;

[0020] A sixth sprocket is fixedly installed on the pulverizer near the cleaning tank, and a seventh sprocket is fixedly installed on the output shaft of the drive motor. The sixth and seventh sprockets are connected by a fourth chain drive.

[0021] Preferably, the crushing shell is provided with a discharge port;

[0022] The screening and conveying component includes a screening frame fixedly installed below the discharge port of the crushing shell and a sieve plate fixedly installed inside the screening frame;

[0023] The inner bottom wall of the screening frame and the perforated plate are both inclined from left to right. A conveying plate is fixedly provided on the side of the screening frame away from the crushing shell, and a return plate is fixedly provided on the side of the perforated plate away from the crushing shell.

[0024] The raw material section includes a screening frame and a conveying plate, and the reflux section includes a reflux plate and a filter plate.

[0025] Preferably, the top of both the front and rear sides of the cleaning tank is provided with a plurality of sliding limiting grooves with the openings facing upwards;

[0026] The sliding limiting groove is provided with a transmission component, and the transmission component is threadedly adapted to a cleaning component that moves up and down along the sliding limiting groove. The cleaning component has an M-shaped structure, which includes a cleaning part and a guide part fixed on the front and rear sides of the cleaning part. The cleaning part is provided with a drain hole for cleaning debris in the cleaning tank.

[0027] The rear side of the cleaning tank is provided with a driving mechanism. When the driving mechanism is adapted to the transmission components in different sliding limit grooves, it can drive the cleaning component in the corresponding sliding limit groove to move up and down along the sliding limit groove.

[0028] Preferably, the transmission assembly includes a lead screw rotatably disposed at the bottom of the sliding limiting groove and extending in the vertical direction, a first bevel gear fixedly disposed on the lead screw, and a second bevel gear meshing with the first bevel gear;

[0029] A short rod is rotatably mounted inside the sliding limiting groove, and the second bevel gear is fixedly mounted on the short rod. A magnet is fixedly mounted on the short rod as it passes through the cleaning tank.

[0030] Preferably, the drive mechanism includes a telescopic device fixedly disposed on the rear side of the cleaning tank, a second drive motor fixedly disposed on the end of the movable rod of the telescopic device, and an electromagnet assembly disposed on the output shaft of the second drive motor.

[0031] After the electromagnet assembly is activated, it can attract the magnet on the corresponding short rod, so that when the output shaft of the second drive motor rotates, the electromagnet assembly can drive the corresponding magnet and short rod to rotate.

[0032] The beneficial effects are: 1. By cleverly installing the recycling device on top of the plastic cup-making machine, the previous method of first winding up excess material before recycling is eliminated. This significantly reduces the labor intensity for workers. Previously, the process was cumbersome, requiring considerable effort from workers to wind up the material; this step is now removed. Simultaneously, this installation method greatly improves the efficiency of waste material recycling. In the traditional model, the numerous steps and the lack of seamless coordination between them can lead to wasted time; the new method avoids these problems. Furthermore, the recycled material can be directly fed into the extruder, allowing for rapid recycling and reuse of waste material. This efficient recycling and reuse model achieves cost savings. Moreover, since the recycling device is installed on top of the cup-making machine, it does not occupy excessive space, resulting in a more rational and compact layout of the entire production space.

[0033] 2. When recycling and reusing surplus materials, the surplus materials are placed in a cleaning tank to thoroughly remove any impurities and dirt that may be attached to their surface. Next, the cleaned surplus materials are fed into a crushing unit, where they are broken down into smaller particles or fragments by the powerful action of the crusher. This process ensures uniform particle size. Finally, the crushed raw materials pass through a screening conveyor. The screening conveyor serves two purposes: firstly, it screens the crushed raw materials, removing oversized or undersized particles to ensure the particle size is within the appropriate range; secondly, it stably transports the qualified raw materials to the extruder, where they are melted and reprocessed, thus achieving the recycling and reuse of surplus materials and saving resources and reducing costs.

[0034] 3. Activation of the telescopic device moves the second drive motor and electromagnet assembly. Once activated, the electromagnet assembly attracts the corresponding magnet. The second drive motor then rotates the electromagnet assembly, magnet, and short rod, causing the lead screw to rotate and lift the cleaning component from the cleaning tank. This removes debris from the tank, effectively improving the water quality. With the debris removed, the water becomes purer, resulting in better cleaning of residual materials. The coordinated operation of this entire system is highly effective in improving the cleaning of residual materials. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of the cleaning tank component of the present invention installed on the top of a plastic cup making machine;

[0036] Figure 2 This is a front view schematic diagram of the assembly of the cleaning tank, crushing component, and screening conveyor component of the present invention;

[0037] Figure 3 This is a rear view structural diagram of the assembly of the cleaning tank, crushing component, and screening conveyor component of the present invention;

[0038] Figure 4 This is a partial cross-sectional structural schematic diagram of the cleaning tank component of the present invention;

[0039] Figure 5 This is a schematic diagram of the structure of the drive motor driving the auxiliary roller shaft to rotate according to the present invention;

[0040] Figure 6 This is a schematic diagram of the structure of the cleaning component of the present invention sliding along the sliding limiting groove;

[0041] Figure 7 This is a partial cross-sectional side view of the cleaning tank component of the present invention;

[0042] Figure 8 This is an enlarged structural schematic diagram of Figure A in this invention;

[0043] Figure 9 This is a schematic diagram of the synchronous rotation of the first and second roller shafts of the present invention;

[0044] Figure 10 This is a schematic diagram of the structure of the cleaning component of the present invention sliding out along the sliding limiting groove;

[0045] Figure 11 This is a schematic diagram of the structure of the drive motor driving the crusher blade to rotate according to the present invention;

[0046] Figure 12 This is a schematic diagram of the distribution of the output rollers of the present invention.

[0047] In the diagram: 1. Cleaning tank; 2. Crushing component; 201. Crushing shell; 202. Crushing blade; 3. Screening conveyor; 301. Screening frame; 302. Screw plate; 4. Auxiliary roller; 5. Input roller; 501. First roller; 502. Second roller; 6. Drive motor; 7. Output roller; 8. Input mounting base; 9. First sprocket; 10. Second sprocket; 11. Third sprocket; 12. Fourth sprocket; 13. Fifth sprocket; 15. First gear; 16. Sixth sprocket; 17. Seventh sprocket; 18. Conveying plate; 19. Return plate; 20. Sliding limit groove; 21. Conducting assembly; 2101. Lead screw; 2102. First bevel gear; 2103. Second bevel gear; 22. Cleaning component; 23. Short rod; 24. Magnet; 25. Telescopic device; 26. Second drive motor; 27. Electromagnet assembly. Detailed Implementation

[0048] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0049] This embodiment aims to provide a disposable plastic cup thermoforming device, mainly used for recycling and reprocessing excess materials generated by the plastic cup making machine, so as to improve the utilization effect and reduce the waste of resources. Moreover, this device is installed above the plastic cup making machine, which reduces the space required and eliminates the need for manual handling of the rolled-up excess material, thus reducing the labor intensity of workers.

[0050] In this embodiment, the material is the leftover material from the production of disposable plastic cups by the plastic cup making machine.

[0051] like Figures 1-12As shown, the disposable plastic cup thermoforming device includes a plastic cup making machine and an extruder adapted to the feeding end of the plastic cup making machine. A recycling device is installed on the top of the plastic cup making machine. Through the recycling device, the excess material of the plastic cup making machine can be recycled and reprocessed, so that it can be reused and the utilization rate can be improved.

[0052] like Figure 1 As shown, the recycling device includes a washing tank 1, a crushing component 2, and a screening and conveying component 3, all installed on top of the plastic cup making machine and extending along its direction. The washing tank 1, crushing component 2, and screening and conveying component 3 are connected sequentially from left to right. The inlet of the washing tank 1 corresponds to the outlet of the plastic cup making machine, allowing the residual material generated by the machine to enter the washing tank 1. The screening and conveying component 3 is connected to the inlet of the extruder, allowing the processed material to be conveyed to the extruder for reuse. In this embodiment, the material produced by the screening and conveying component 3 is the crushed residual material particles. The principle and structure of the extruder are as follows: The existing technology, which will not be described in detail here, allows the waste material generated by the plastic cup making machine to be transported back into the extruder through the cleaning tank 1, the crushing component 2, and the screening conveyor 3. In this embodiment, the bottom of the cleaning tank 1, the crushing component 2, and the screening conveyor 3 are all fixedly equipped with mounting plates, and the mounting plates have bolt holes that are open from top to bottom. In addition, the top of the plastic cup making machine also has bolt slots corresponding to the bolt holes. By passing the bolts through the bolt holes and inserting them into the bolt slots for tightening, the cleaning tank 1, the crushing component 2, and the screening conveyor 3 can be installed on the top of the plastic cup making machine. The structure and principle of installation by bolts are existing technology and will not be described in detail here.

[0053] like Figures 1-5 As shown, a number of auxiliary rollers 4 are rotatably arranged inside the cleaning tank 1 and spaced apart on the left and right. An input roller 5 is provided on the top side of the cleaning tank 1 away from the crushing component 2. The input roller 5 can input the residual material produced by the plastic paper cup machine into the cleaning tank 1. A drive motor 6 that can drive the input roller 5 to rotate is fixed on the outside of the cleaning tank 1. An output roller 7 is provided on the top side of the cleaning tank 1 near the crushing component 2. An output mounting base is fixed on the top side of the cleaning tank 1 near the crushing component 2. The output roller 7 rotates on the output mounting base. On the seat, the residual material generated by the plastic cup making machine can be conveyed to the crushing part 2 through the input roller 5, auxiliary roller 4 and output roller 7. The drive motor 6 starts and can drive the input roller 5 to rotate to convey the residual material. At this time, the residual material is located above the input roller 5. When the residual material enters the cleaning tank 1, the residual material is located below the auxiliary roller 4. When it is output through the output roller 7, the residual material is located above the output roller 7. Through the input roller 5, auxiliary roller 4 and output roller 7, the residual material can be cleaned in the cleaning tank 1.

[0054] Specifically, the input roller 5 includes a first roller 501 and a second roller 502 rotatably mounted on the top of the cleaning tank 1. In this embodiment, a pressing and conveying mechanism is provided on the top of the cleaning tank 1 and on the rear side of the output roller 7, such as... Figure 12 As shown, the pressing and conveying mechanism includes a third drive motor, a lower roller shaft that is connected to the output end of the third drive motor, and an upper roller shaft located above the lower roller shaft. Both the upper and lower roller shafts are fixed with fifth gears. The two fifth gears mesh with each other, causing the upper and lower roller shafts to rotate relative to each other to convey the remaining material. The principle and structure of this pressing and conveying mechanism are existing technologies and will not be described in detail here. An input mounting seat 8 is fixedly provided on the top of the cleaning tank 1. The first roller shaft 501 and the second roller shaft 502 are rotatably connected to their respective input mounting seats 8. The input mounting seats 8 provide support for the first roller shaft 501 and the second roller shaft 502, improving their stability.

[0055] The output end of the drive motor 6 is fixedly connected to one end of the first roller shaft 501. When the drive motor 6 is started, it can drive the first roller shaft 501 to rotate. A first sprocket 9 is fixedly provided on the other end of the first roller shaft 501. The first sprocket 9 is connected to a second sprocket 10 through a first chain. The second sprocket 10 is fixedly connected to the second roller shaft 502, so that the first roller shaft 501 and the second roller shaft 502 rotate synchronously. When the first roller shaft 501 rotates, it can drive the first sprocket 9 to rotate, and then drive the second sprocket 10 to rotate through the first chain, so that the second roller shaft 502 can rotate. Under the action of the first roller shaft 501 and the second roller shaft 502, the excess material can be conveyed more smoothly.

[0056] An auxiliary roller 4, located near the second roller 502, extends out of the cleaning tank 1 and is fixedly equipped with a third sprocket 11. A fourth sprocket 12 is fixedly equipped on the side of the first roller 501 near the first sprocket 9. The third sprocket 11 and the fourth sprocket 12 are connected by a second chain drive. When the first roller 501 rotates, it can also drive the fourth sprocket 12 to rotate, so that the fourth sprocket 12 drives the third sprocket 11 to rotate through the second chain, thereby driving the set of auxiliary rollers 4 closest to the second roller 502 to rotate.

[0057] like Figure 4 and Figure 5 As shown, the rear interior of the cleaning tank 1 has a chamber extending in the left-right direction; each auxiliary roller shaft 4 is fixedly mounted with a fifth sprocket 13 through the chamber, and the fifth sprockets 13 on two adjacent auxiliary roller shafts 4 are connected by a third chain drive; the fifth sprocket 13 is located inside the chamber, and when the set of auxiliary roller shafts 4 closest to the second roller shaft 502 rotates, the fifth sprocket 13 enables the adjacent auxiliary roller shafts 4 to rotate, and so on, driving all the auxiliary roller shafts 4 to rotate, such as... Figure 5As shown, the rotation of the auxiliary roller 4 improves the conveying effect of the surplus material.

[0058] like Figures 1-3 and Figure 11 As shown, the crushing component 2 includes a crushing housing 201 fixedly disposed on the right side of the cleaning tank 1 and two crushing blades 202 rotatably disposed within the crushing housing 201 and spaced apart from each other. The front ends of the two crushing blades 202 are each fixedly provided with a first gear 15 extending through the crushing housing 201. Since the two first gears 15 mesh with each other, when one crushing blade 202 rotates, the other crushing blade 202 can rotate in the opposite direction. The residual material is crushed by the relative rotation of the two crushing blades 202. A sixth sprocket 16 is fixedly disposed on the crushing blade 202 near the cleaning tank 1. When the sixth sprocket 16 rotates, it can drive one of the crushing blades 202 to rotate. A seventh sprocket 17 is fixedly disposed on the output shaft of the drive motor 6. The sixth sprocket 16 and the seventh sprocket 17 are connected by a fourth chain. When the drive motor 6 is started, it can also drive the seventh sprocket 17 to rotate. When the seventh sprocket 17 rotates, it can drive the sixth sprocket 16 to rotate through the fourth chain.

[0059] like Figures 1-3 As shown, the screening conveyor 3 includes a reflux section and a raw material section arranged at intervals. The reflux section can re-crush the larger residual material after crushing, and the raw material section can convey the crushed raw material into the extruder.

[0060] Specifically, the crushing shell 201 has a discharge port, which allows the crushed material to be output. The screening and conveying component 3 includes a screening frame 301 fixedly installed below the discharge port of the crushing shell 201 and a strainer 302 fixedly installed inside the screening frame 301. The inner bottom wall of the screening frame 301 and the strainer 302 are both inclined from left to right. The arrangement of the strainer 302 and the screening frame 301 allows larger particles to flow onto the return plate 19, while qualified material flows through the strainer 302 onto the screening frame 301, and then onto the conveying plate 18. The material is further processed by the extruder. A conveying plate 18 is fixedly provided on the side of the screening frame 301 away from the crushing shell 201, and a return plate 19 is fixedly provided on the side of the sifting plate 302 away from the crushing shell 201. The return plate 19 is a frame structure that can store materials, and an opening and closing door is provided on the frame structure. When the material in the return plate 19 is full, the opening and closing door can be opened to collect the material on the return plate 19 and then pour it into the crushing part 2 for re-crushing. The raw material part includes the part composed of the screening frame 301 and the conveying plate 18, and the return part includes the part composed of the return plate 19 and the sifting plate 302.

[0061] like Figures 6-10As shown, the top of both the front and rear sides of the cleaning tank 1 is provided with several sliding limiting grooves 20 with their openings facing upwards; a transmission component 21 is provided in the sliding limiting groove 20, and a cleaning component 22 that moves up and down along the sliding limiting groove 20 is threaded onto the transmission component 21. The cleaning component 22 has an M-shaped structure, which includes a cleaning part and a guide part fixed on the front and rear sides of the cleaning part. The cleaning part has a drain hole for cleaning debris in the cleaning tank 1; a driving mechanism is provided on the rear side of the cleaning tank 1. When the driving mechanism is adapted to the transmission component 21 in different sliding limiting grooves 20, it can drive the cleaning component 22 in the corresponding sliding limiting groove 20 to move up and down along the sliding limiting groove 20.

[0062] The transmission assembly 21 includes a lead screw 2101 rotatably disposed at the bottom of the sliding limiting groove 20 and extending in the vertical direction, a first bevel gear 2102 fixedly disposed on the lead screw 2101, and a second bevel gear 2103 meshing with the first bevel gear 2102. When the lead screw 2101 rotates, it can cause the cleaning member 22 to move up and down along the sliding limiting groove 20 to remove debris from the cleaning tank 1 and improve the water quality of the cleaning tank 1. A short rod 23 is rotatably disposed in the sliding limiting groove 20. The second bevel gear 2103 is fixedly disposed on the short rod 23. A magnet 24 is fixedly disposed through the short rod 23 and extends out of the cleaning tank 1. When the short rod 23 rotates, it can drive the corresponding second bevel gear 2103 to rotate. Since the second bevel gear 2103 meshes with the first bevel gear 2102, it can drive the corresponding lead screw 2101 to rotate.

[0063] The drive mechanism includes a telescopic device 25 fixedly mounted on the rear side of the cleaning tank 1, a second drive motor 26 fixedly mounted on the end of the movable rod of the telescopic device 25, and an electromagnet assembly 27 mounted on the output shaft of the second drive motor 26. After the electromagnet assembly 27 is started, it can attract the magnet 24 on the corresponding short rod 23, so that when the output shaft of the second drive motor 26 rotates, the electromagnet assembly 27 can drive the corresponding magnet 24 and the short rod 23 to rotate. After the second drive motor 26 is started, it can drive the electromagnet assembly 27 and the magnet 24 to rotate, thereby causing the corresponding short rod 23 to rotate.

[0064] In this embodiment, the electromagnet assembly 27 includes an electromagnet and a battery. The battery provides power to the electromagnet. When the battery is depleted, it can be replaced. The structure and principle of the electromagnet and the battery are existing technologies and will not be described in detail here.

[0065] Working Principle: This device is bolted to the top of the plastic cup making machine. The inlet of the cleaning tank 1 corresponds to the outlet of the plastic cup making machine, allowing the residual material produced by the machine to enter the cleaning tank 1. The screening and conveying component 3 is connected to the input port of the extruder, and the processed material is then conveyed to the extruder for reuse. The drive motor 6 starts, rotating the first roller 501 to convey the residual material. At this time, the residual material is located above the input roller 5. The rotation of the first roller 501 also drives the fourth sprocket 12, which in turn drives the third sprocket 11 via the second chain. When the auxiliary roller 4 closest to the second roller 502 rotates, the fifth sprocket 13 drives the adjacent auxiliary roller 4, which in turn drives the auxiliary roller 4 closest to the second roller 502. At this time, the residual material is located below the auxiliary roller 4 and is output via the output roller 7. The residual material is located above the output roller 7. Through the input roller 5, auxiliary roller 4, and output roller 7, the residual material can be cleaned in the cleaning tank 1. The start of the drive motor 6 can also drive the seventh sprocket 17 to rotate. When the seventh sprocket 17 rotates, it can drive the sixth sprocket 16 to rotate through the fourth chain. When the sixth sprocket 16 rotates, it can rotate one of the crushing blades 202. Since the two first gears 15 mesh with each other, when one crushing blade 202 rotates, it can cause the other crushing blade 202 to rotate in the opposite direction. The residual material is crushed by the relative rotation of the two crushing blades 202. The crushed material flows into the screening conveyor 3. Through the setting of the stencil 302 and the screening frame 301, the larger particles flow to the return plate 19 and are then crushed again. The qualified material flows through the stencil 302 to the screening frame 301 and then to the conveyor plate 18 for reprocessing by the extruder.

[0066] After the telescopic device 25 is activated, it can drive the second drive motor 26 and the electromagnet assembly 27 to move to the corresponding magnet 24. After the electromagnet assembly 27 is activated, it can attract the magnet 24 on the corresponding short rod 23. When the output shaft of the second drive motor 26 rotates, it can drive the corresponding magnet 24 and the short rod 23 to rotate through the electromagnet assembly 27. When the short rod 23 rotates, it can drive the corresponding second bevel gear 2103 to rotate. The second bevel gear 2103 meshes with the first bevel gear 2102, so it can drive the corresponding lead screw 2101 to rotate. When the lead screw 2101 rotates, it can cause the cleaning component 22 to move up and down along the sliding limit groove 20 to retrieve the debris in the cleaning tank 1.

[0067] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A disposable plastic cup thermoforming apparatus comprising a plastic cup making machine and an extruder adapted to feed the plastic cup making machine, characterized in that, The application relates to a recycling device mounted on the top of a plastic cup machine. The recycling device comprises a cleaning groove (1), a crushing part (2) and a screening and conveying part (3) which are mounted on the top of the plastic cup machine and extend along the extension direction of the plastic cup machine, the cleaning groove (1), the crushing part (2) and the screening and conveying part (3) are sequentially connected from left to right, the screening and conveying part (3) is connected with the input port of an extruder, and the excess material generated by the plastic cup machine can be conveyed back into the extruder through the cleaning groove (1), the crushing part (2) and the screening and conveying part (3). A plurality of groups of auxiliary roller shafts (4) are rotationally arranged in the cleaning groove (1) and are arranged at intervals left and right, an input roller shaft (5) is arranged on the top of the cleaning groove (1) and away from the crushing part (2) on one side, a driving motor (6) is fixedly arranged on the outer side of the cleaning groove (1) and can drive the input roller shaft (5) to rotate, an output roller shaft (7) is arranged on the top of the cleaning groove (1) and close to the crushing part (2) on one side, so that the excess material generated by the plastic cup machine can be conveyed to the crushing part (2) through the input roller shaft (5), the auxiliary roller shaft (4) and the output roller shaft (7). The input roller shaft (5) comprises a first roller shaft (501) and a second roller shaft (502) which are rotationally arranged on the top of the cleaning groove (1). The output end of the driving motor (6) is fixedly connected with one end of the first roller shaft (501). A first sprocket (9) is fixedly arranged on the other end of the first roller shaft (501), the first sprocket (9) is drivingly connected with a second sprocket (10) through a first chain, the second sprocket (10) is fixedly connected with the second roller shaft (502), and the first roller shaft (501) and the second roller shaft (502) rotate synchronously. Input mounting seats (8) are fixedly arranged on the top of the cleaning groove (1), and the first roller shaft (501) and the second roller shaft (502) are rotationally connected with the corresponding input mounting seats (8) respectively. A third sprocket (11) is fixedly arranged on the auxiliary roller shaft (4) close to the second roller shaft (502) and protrudes out of the cleaning groove (1), a fourth sprocket (12) is fixedly arranged on the side of the first roller shaft (501) close to the first sprocket (9), and the third sprocket (11) and the fourth sprocket (12) are drivingly connected through a second chain. The screening and conveying part (3) comprises a backflow part and a raw material part which are arranged at intervals up and down, the backflow part can re-crush the relatively large excess material after crushing, and the raw material part can convey the crushed raw material into the extruder. A plurality of sliding limiting grooves (20) are arranged on the top of the cleaning groove (1) and open upwards. A conducting assembly (21) is arranged in the sliding limiting groove (20), a cleaning part (22) which moves up and down along the sliding limiting groove (20) is threadedly arranged on the conducting assembly (21), the cleaning part (22) is of an M-shaped structure, the M-shaped structure comprises a cleaning part and guide parts which are fixedly arranged on the front and back sides of the cleaning part, and a plurality of leakage holes are arranged on the cleaning part and used for cleaning the sundries in the cleaning groove (1). The rear side of the cleaning tank (1) is provided with a driving mechanism, which can drive the cleaning piece (22) in the corresponding sliding limiting groove (20) to move up and down along the sliding limiting groove (20) when the driving mechanism is matched with the transmission assembly (21) in the different sliding limiting grooves (20). The transmission assembly (21) comprises a lead screw (2101) rotatably arranged at the bottom of the sliding limiting groove (20) and extending in the up-down direction, a first bevel gear (2102) fixedly arranged on the lead screw (2101), and a second bevel gear (2103) meshing with the first bevel gear (2102). A short rod (23) is rotatably arranged in the sliding limiting groove (20), the second bevel gear (2103) is fixedly arranged on the short rod (23), and the short rod (23) penetrates the cleaning tank (1) and is fixedly provided with a magnet (24). The driving mechanism comprises a telescopic device (25) fixedly arranged at the rear side of the cleaning tank (1), a second driving motor (26) fixedly arranged at the end of the movable rod of the telescopic device (25), and an electromagnet assembly (27) arranged on the output shaft of the second driving motor (26). After the electromagnet assembly (27) is started, it can be adsorbed with the magnet (24) on the corresponding short rod (23), so that when the output shaft of the second driving motor (26) rotates, the corresponding magnet (24) and short rod (23) can be driven to rotate through the electromagnet assembly (27). The crushing piece (2) comprises a crushing shell (201) fixedly arranged at the right side of the cleaning tank (1) and two crushing knives (202) rotatably arranged in the crushing shell (201) and spaced apart left and right. The front ends of the two crushing knives (202) are fixedly provided with first gears (15) penetrating the crushing shell (201), and the two first gears (15) are meshed with each other. A sixth sprocket (16) is fixedly arranged on the crushing knife (202) close to the cleaning tank (1), a seventh sprocket (17) is fixedly arranged on the output shaft of the driving motor (6), and the sixth sprocket (16) and the seventh sprocket (17) are transmissionally connected through a fourth chain.

2. A thermoforming apparatus for disposable plastic cups as defined in claim 1, wherein The rear side of the cleaning tank (1) is internally provided with a chamber extending in the left-right direction. Each auxiliary roller shaft (4) is fixedly provided with a fifth sprocket (13) penetrating the chamber, and the fifth sprockets (13) on the adjacent two auxiliary roller shafts (4) are transmissionally connected through a third chain. The fifth sprocket (13) is located in the chamber.

3. A thermoforming apparatus for disposable plastic cups as defined in claim 1, wherein, The crushing shell (201) is provided with a discharge port. The screening and conveying piece (3) comprises a screening frame (301) fixedly arranged below the discharge port of the crushing shell (201) and a sieve plate (302) fixedly arranged in the screening frame (301). The inner bottom wall of the screening frame (301) and the sieve plate (302) are both inclined from left to right, a conveying plate (18) is fixedly arranged on the side of the screening frame (301) away from the crushing shell (201), and a backflow plate (19) is fixedly arranged on the side of the sieve plate (302) away from the crushing shell (201). The raw material part includes a part composed of a screening frame (301) and a conveying plate (18), and the return flow part includes a part composed of a return flow plate (19) and a leakage plate (302).

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