Automobile plastic part extruder set using waste plastic

Abstract

The application relates to the technical field of extruders and discloses an automobile plastic part extruder set using waste plastics, which comprises a forming extruder and a die set arranged at the top of the forming extruder, further comprises a feeding cylinder arranged at the top of the forming extruder, the inside of the feeding cylinder is fixedly connected with a separation disc, the surface of the feeding cylinder is fixedly connected with a mounting box, a water removal assembly is arranged in the inside of the feeding cylinder and is used for removing water vapor on the surface of raw materials; through the use of the water removal assembly, a water pump sends hot water in a heating box to the inside of a fixed disc through a water inlet pipe, then the hot water is sent to the inside of a rotating cylinder through a water delivery pipe, the hot water flows into the inside of a flow-through strip through a water inlet channel, the hot water in the inside of the flow-through strip flows into the inside of the heating box through a water return channel and a water return pipe, and circulation is formed in this way; the moisture on the surface of plastic particles is treated through the continuous circulation of the hot water, so that the moisture treatment effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of extruder technology, specifically to an extruder unit for automotive plastic parts that utilizes waste plastics. Background Technology

[0002] Extrusion units are the core equipment for continuous molding of polymer materials (plastics, rubber, etc.). They consist of three parts: main machine, auxiliary machine, and control system. They can heat, shear, melt, extrude, cool and shape granules or powders into products such as pipes, sheets, films, and profiles. Some automotive plastic parts are made by using extrusion units to process processed plastic granules.

[0003] Publication No. CN222538245U discloses an energy-saving extrusion temperature control unit for plastic particles. It includes a feeding hopper with multiple detachable components movably connected to its bottom. A valve assembly is fixedly connected to the end of each detachable component extending out of the feeding hopper. A thermostatic tube is fixedly connected to the end of each valve assembly, and a pellet plate is fixedly connected to the bottom of each thermostatic tube. The multiple thermostatic tubes operate at different temperature environments. This application facilitates the installation of multiple thermostatic tubes at different temperatures at the bottom of the feeding hopper using the detachable components. By pouring material into the feeding hopper, a pushing component rotates, transporting the material inside the feeding hopper to the multiple valve assemblies while simultaneously stirring. Adjusting the valve assemblies allows the material to easily enter the thermostatic tubes. The multiple thermostatic tubes at different temperatures facilitate simultaneous granulation of plastic particles at different temperatures. The rotating conveying component extrudes the material inside the thermostatic tubes through the holes in the pellet plate.

[0004] Although the aforementioned applications and prior art can granulate plastic particles at different temperatures, when using treated waste plastic particles to manufacture automotive plastic parts, the waste plastic particles will have trace amounts of moisture on their surface after storage. This can lead to defects in the molded parts when using an extruder to form the automotive plastic parts. Furthermore, when treating the moisture on the surface of the waste plastic particles, the evaporated moisture can cause the plastic particles to clump together, affecting subsequent molding. Also, when treating the moisture on the surface of the plastic particles, material will accumulate at the corners of the barrel, and the moisture on the surface of the accumulated material cannot be discharged, leading to the separation of dry and wet particles in the same batch, which in turn leads to air bubbles in the subsequent batch of finished products. Therefore, this application proposes an extruder for automotive plastic parts that utilizes waste plastic. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an extrusion unit for automotive plastic parts utilizing waste plastics. It offers advantages such as moisture treatment, prevention of clumping, and prevention of delamination. This solves the problems of the aforementioned applications and existing technologies, where treated waste plastic granules used in the manufacture of automotive plastic parts exhibit surface moisture after storage. This moisture leads to defects in the formed parts during extrusion. Furthermore, when treating the surface moisture of the waste plastic granules, the evaporating moisture causes clumping, affecting subsequent molding. Additionally, when treating the surface moisture, material accumulates at the edges of the barrel, preventing moisture from escaping and resulting in delamination of the same batch of granules, leading to air bubbles in subsequent batches of finished products.

[0006] (II) Technical Solution To achieve the aforementioned objectives of moisture treatment, prevention of clumping, and prevention of delamination, this invention provides the following technical solution: an extrusion unit for automotive plastic parts utilizing waste plastics, comprising: a forming extruder and a die assembly disposed on top of the forming extruder, and further comprising: A feed cylinder is located at the top of the forming extruder. An isolation disc is fixedly connected inside the feed cylinder, and a mounting box is fixedly connected to the surface of the feed cylinder. A dehydration assembly is disposed inside the feed cylinder and is used to remove moisture from the surface of the raw materials. The dehydration assembly includes a fixed plate fixedly connected to the top of the feed cylinder, a rotating cylinder rotatably connected inside the fixed plate, and several flow strips fixedly connected to the surface of the rotating cylinder. The flow strips are connected to each other through flow pipes. An anti-caking component is installed inside the feed cylinder to prevent the volatilized water vapor from causing the raw material to clump together and affecting subsequent molding when the dehydration component removes water vapor from the surface of the raw material. An anti-sinking component is installed inside the feed cylinder to prevent the raw material at the top edge of the isolation disc from turning into carbon particles due to prolonged heating, which would affect the molding of subsequent plastic parts.

[0007] Furthermore, the dewatering assembly also includes a heating box fixedly connected inside the mounting box. A water pump is provided at the top of the heating box, and a water pump pipe is provided at the bottom of the water pump. The water pump pipe extends into the interior of the heating box. A water inlet pipe is fixedly connected to the top of the water pump. A mounting plate is fixedly connected to the surface of the water inlet pipe, and the end of the water inlet pipe away from the water pump is fixedly connected to the surface of the mounting plate.

[0008] Furthermore, the rotating cylinder has a water inlet channel at its top and a water return channel at its bottom. The water inlet channel is fixedly connected to several flow strips at the top, and the water return channel is fixedly connected to several flow strips at the bottom.

[0009] Furthermore, the fixed plate is connected to the water inlet channel via a water supply pipe, and the heating box is connected to the water return channel via a water return pipe. The water supply pipe is rotatably connected to the top of the water inlet channel, and the water return pipe is rotatably connected to the bottom of the water return channel.

[0010] Furthermore, the anti-caking component includes several fixed plates fixedly connected to the surface of the rotating cylinder and several extrusion strips fixedly connected to the inside of the feed cylinder. The fixed plates are disposed inside the fixed disk, and the extrusion strips are respectively located between two adjacent flow strips.

[0011] Furthermore, the anti-sinking component includes a rotating rod rotatably connected inside the mounting box and a swing plate rotatably connected to the top of the heating box. A plurality of rotating plates are fixedly connected to the surface of the rotating rod, and the plurality of rotating plates are disposed inside the mounting plate. A limiting plate is fixedly connected to one end of the rotating rod, and a limiting rod is fixedly connected to the end of the limiting plate away from the rotating rod. A swing groove is provided at one end of the swing plate, and the limiting rod is disposed inside the swing groove.

[0012] Furthermore, the anti-sinking component also includes a push-pull plate slidably connected inside the mounting box and several air cylinders fixedly connected inside the mounting box. One side of the push-pull plate is connected to the swing plate by a hinge strip. Several push-pull rods are fixedly connected to both the surface and the back of the push-pull plate. A push-pull plate is fixedly connected to the end of each push-pull rod away from the push-pull plate. The push-pull plate is slidably connected inside the air cylinder.

[0013] Furthermore, the anti-sinking component also includes a fixing ring fixedly connected to the bottom of the isolation plate. The top of the fixing ring is fixedly connected to a plurality of air nozzles, and the bottom of the fixing ring is fixedly connected to a plurality of connecting pipes. The bottom of the plurality of connecting pipes is fixedly connected to a distribution ring, and a distribution plate is provided in the middle of the distribution ring. The distribution plate and the distribution ring are fixedly connected by a support strip.

[0014] Furthermore, the inner wall of the heating box is provided with a plurality of heating wires, the plurality of air supply cylinders are connected to the inner wall of the heating box through air supply pipes, and the distribution plate is connected to the inner wall of the heating box through a hot air pipe.

[0015] Furthermore, the top of the feed cylinder is fixedly connected to a feed pipe, and the bottom of the isolation disc is fixedly connected to two discharge pipes, each of which is equipped with a solenoid valve.

[0016] (III) Beneficial Effects Compared with the prior art, the present invention provides an extrusion unit for automotive plastic parts that utilizes waste plastics, and has the following beneficial effects: 1. This automotive plastic parts extrusion unit, which utilizes waste plastics, uses a dewatering component. The pump is activated, and hot water from inside the heating box is transported through the inlet pipe to the fixed plate, and then through the delivery pipe to the rotating drum. The hot water flows through the inlet channel into the flow strip, and then through the return channel and return pipe back into the heating box, forming a cycle. This continuous circulation of hot water removes moisture from the surface of the plastic granules, achieving the desired moisture removal effect.

[0017] 2. This automotive plastic parts extrusion unit, which utilizes waste plastics, uses a combination of a water removal component and an anti-caking component. When hot water from inside the heating box enters the fixed plate through the inlet pipe, the hot water drives the rotating drum through the fixed plate, causing the rotating drum to drive the flow strip to rotate. The flow strip causes the clumped plastic to be squeezed against the extrusion strip, breaking up the clumped plastic and preventing it from clumping again, thus achieving the effect of avoiding clumping.

[0018] 3. This automotive plastic parts extrusion unit, utilizing recycled plastics, employs a combination of a dewatering component and an anti-settling component. When hot water from inside the heating box enters the mounting plate, the hot water drives a rotating rod via a rotating plate. This rotating rod, through a limiting plate and a limiting rod, causes a swing plate to oscillate reciprocally. The swing plate, through a hinge strip, drives a push-pull plate to slide reciprocally. This, in turn, causes the push-pull plate, through a push-pull rod, to slide reciprocally inside the air delivery cylinder. Air from inside the air delivery cylinder is then transported through an air delivery pipe to the inner wall of the heating box. Hot air generated inside the heating box is continuously input through a hot air pipe, and then sequentially transported through a distribution plate, support strip, distribution ring, and connecting pipe to a fixed ring. Finally, the hot air is ejected through a nozzle, treating the plastic granules at the bottom of the feed cylinder. This ensures uniform dryness of the plastic granules, thus preventing separation.

[0019] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the feed cylinder of the present invention; Figure 3 This is a cross-sectional perspective view of the feed cylinder of the present invention. Figure 4 This is a three-dimensional schematic diagram of the internal structure of the feed cylinder of the present invention; Figure 5 This is a three-dimensional schematic diagram of the internal structure of the feed cylinder of the present invention from another perspective; Figure 6 This is a cross-sectional perspective view of the mounting box of the present invention. Figure 7 This is a three-dimensional schematic diagram of the internal structure of the mounting box of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the water pump of the present invention; Figure 9 This is a three-dimensional structural diagram of the fixed disk and rotating cylinder of the present invention; Figure 10 This is a schematic cross-sectional view of the rotating cylinder structure of the present invention; Figure 11 This is a cross-sectional perspective view of the feed cylinder and fixed plate of the present invention. Figure 12 This is a three-dimensional structural diagram of the anti-sinking component of the present invention; Figure 13 This is a schematic diagram of the three-dimensional structure of the rotating rod of the present invention; Figure 14 This is a schematic diagram of the three-dimensional structure of the swing plate and push-pull plate of the present invention.

[0021] In the diagram: 1. Forming extruder; 11. Die assembly; 12. Feed cylinder; 121. Feed pipe; 122. Isolation disc; 123. Discharge pipe; 124. Mounting box; 2. Water removal assembly; 21. Heating box; 211. Water pump; 212. Water inlet pipe; 213. Mounting disc; 22. Fixing disc; 221. Water delivery pipe; 23. Rotating cylinder; 231. Water inlet channel; 232. Water return channel; 233. Flow strip; 234. Flow pipe; 235. Water return pipe; 3. Anti-caking device Components; 31. Fixing plate; 32. Extrusion strip; 4. Anti-sinking component; 41. Rotating rod; 411. Limiting plate; 412. Limiting rod; 42. Swing plate; 421. Swing groove; 422. Hinge strip; 43. Push-pull plate; 431. Push-pull rod; 432. Push-pull disc; 44. Air cylinder; 441. Air pipe; 45. Fixing ring; 451. Air nozzle; 452. Connecting pipe; 453. Distribution ring; 454. Support strip; 455. Distribution disc; 456. Hot air pipe. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0024] For a specific implementation example, please refer to Implementation Example 1. Figures 1 to 3 An extrusion unit for automotive plastic parts utilizing waste plastics includes: a forming extruder 1 and a die assembly 11 disposed on top of the forming extruder 1, and further includes: The feed cylinder 12 is located at the top of the forming extruder 1. An isolation disc 122 is fixedly connected inside the feed cylinder 12. An installation box 124 is fixedly connected to the surface of the feed cylinder 12. A feed pipe 121 is fixedly connected to the top of the feed cylinder 12. Two discharge pipes 123 are fixedly connected to the bottom of the isolation disc 122. Solenoid valves are provided on the surface of both discharge pipes 123. The dewatering component 2 is installed inside the feed cylinder 12 and is used to remove moisture from the surface of the raw materials. The dewatering component 2 includes a fixed plate 22 fixedly connected to the top of the feed cylinder 12. A rotating cylinder 23 is rotatably connected inside the fixed plate 22. Several flow strips 233 are fixedly connected to the surface of the rotating cylinder 23. The flow strips 233 are connected to each other through a flow pipe 234. The anti-caking component 3 is installed inside the feed cylinder 12 to prevent the volatilized water vapor from causing the raw material to clump together and affecting subsequent molding when the water removal component 2 removes water vapor from the surface of the raw material. The anti-sinking component 4 is installed inside the feed cylinder 12 to prevent the raw material at the top edge of the isolation disc 122 from turning into carbon particles due to long-term heating, which would affect the molding of subsequent plastic parts. It should be noted that the surface of the mounting box 124 has an air inlet slot; When plastic granules need to be processed into automotive plastic parts, the plastic granules are poured into the feed cylinder 12 through the feed pipe 121, so that the plastic granules are located on the top of the isolation plate 122. The water removal component 2 removes the moisture from the surface of the plastic granules. At the same time, the water removal component 2 drives the anti-caking component 3 and the anti-settling component 4. The anti-caking component 3 processes the clumped plastic granules, and the anti-settling component 4 processes the plastic granules at the corners, so that the plastic granules maintain a consistent degree of dryness. After processing, the solenoid valve is opened, so that the processed plastic granules enter the bottom of the isolation plate 122 through the discharge pipe 123. Then, the plastic granules at the bottom of the isolation plate 122 enter the interior of the molding extruder 1 to melt. After that, the melted material is conveyed to the mold assembly 11, so that the mold assembly 11 molds the melted material into automotive plastic parts. For a specific embodiment two, please refer to Figures 1 to 10 Based on the automotive plastic parts extrusion unit utilizing waste plastics provided in Specific Embodiment 1, this embodiment provides a further technical solution: The dewatering assembly 2 also includes a heating box 21 fixedly connected inside the mounting box 124. A water pump 211 is provided at the top of the heating box 21, and a water pump pipe is provided at the bottom of the water pump 211, extending into the interior of the heating box 21. A water inlet pipe 212 is fixedly connected to the top of the water pump 211, and a mounting plate 213 is fixedly connected to the surface of the water inlet pipe 212. The end of the water inlet pipe 212 away from the water pump 211 is fixedly connected to the surface of the mounting plate 22. A water inlet channel 231 is provided at the top of the interior of the rotating cylinder 23. The rotating cylinder 23 has a water return channel 232 at the bottom of its interior. The water inlet channel 231 is fixedly connected to several flow strips 233 at the top. The water return channel 232 is fixedly connected to several flow strips 233 at the bottom. The fixed plate 22 is connected to the water inlet channel 231 through a water supply pipe 221. The heating box 21 is connected to the water return channel 232 through a water return pipe 235. The water supply pipe 221 is rotatably connected to the top of the water inlet channel 231, and the water return pipe 235 is rotatably connected to the bottom of the water return channel 232. When it is necessary to remove moisture from the surface of the plastic granules, the water pump 211 is started. The water pump 211 delivers hot water from the heating box 21 to the fixed plate 22 through the water inlet pipe 212. Then, the hot water in the fixed plate 22 is delivered to the rotating drum 23 through the water delivery pipe 221. The hot water flows into the flow strip 233 through the water inlet channel 231, and then into the other flow strips 233 through the flow pipe 234. The hot water in the flow strip 233 flows into the heating box 21 through the return water channel 232 and the return water pipe 235, thus forming a cycle. The moisture on the surface of the plastic granules is treated by the continuous circulation of hot water. For a specific embodiment three, please refer to Figures 1 to 11Based on the automotive plastic parts extrusion unit utilizing waste plastics provided in Specific Embodiment 2, this embodiment provides a further technical solution: The anti-caking component 3 includes several fixing plates 31 fixedly connected to the surface of the rotating cylinder 23 and several extrusion strips 32 fixedly connected to the inside of the feed cylinder 12. The fixing plates 31 are arranged inside the fixed plate 22, and the extrusion strips 32 are respectively located between two adjacent flow strips 233. When it is necessary to process the agglomerated plastic particles, when the hot water inside the heating box 21 enters the interior of the fixed plate 22 through the water inlet pipe 212, the hot water drives the rotating cylinder 23 to rotate through the fixed plate 31, which in turn drives the flow strip 233 to rotate. The flow strip 233 causes the agglomerated plastic particles to be squeezed against the extrusion strip 32. The agglomerated plastic particles are broken up by the extrusion, so that the agglomerated plastic particles no longer agglomerate, thereby ensuring the subsequent molding quality. For a specific implementation example, please refer to Implementation Example 4. Figures 1 to 14 Based on the automotive plastic parts extrusion unit utilizing waste plastics provided in Specific Embodiment 3, this embodiment provides a further technical solution: The anti-sinking component 4 includes a rotating rod 41 rotatably connected inside the mounting box 124 and a swing plate 42 rotatably connected to the top of the heating box 21. Several rotating plates are fixedly connected to the surface of the rotating rod 41 and are disposed inside the mounting plate 213. One end of the rotating rod 41 is fixedly connected to a limiting plate 411, and the end of the limiting plate 411 away from the rotating rod 41 is fixedly connected to a limiting rod 412. One end of the swing plate 42 has a swing groove 421, and the limiting rod 412 is disposed inside the swing groove 421. The anti-sinking component 4 also includes a push-pull plate 43 slidably connected inside the mounting box 124 and several air cylinders 44 fixedly connected inside the mounting box 124. One side of the push-pull plate 43 is connected to the swing plate 42 via a hinge strip 422. Several push-pull rods 431 are fixedly connected to both the surface and back of the push-pull plate 43. Each of the push-pull rods 431 has a push-pull plate 432 fixedly connected to one end away from the push-pull plate 43. The push-pull plate 432 is slidably connected inside the air supply cylinder 44. The anti-sinking component 4 also includes a fixing ring 45 fixedly connected to the bottom of the isolation plate 122. The top of the fixing ring 45 is fixedly connected to a number of air nozzles 451, and the bottom of the fixing ring 45 is fixedly connected to a number of connecting pipes 452. The bottom of the number of connecting pipes 452 is fixedly connected to a distribution ring 453. A distribution plate 455 is provided in the middle of the distribution ring 453. The distribution plate 455 and the distribution ring 453 are fixedly connected by a support bar 454. The inner wall of the heating box 21 is provided with a number of heating wires. The number of air supply cylinders 44 are connected to the inner wall of the heating box 21 by an air supply pipe 441. The distribution plate 455 is connected to the inner wall of the heating box 21 by a hot air pipe 456. It should be noted that the surface of the push-pull plate 432 is provided with a first one-way valve, and the surface of the air supply pipe 441 is provided with a second one-way valve. When the push-pull plate 432 is pushed toward the inside of the air supply cylinder 44, the first one-way valve closes and the second one-way valve opens, thereby delivering the air inside the air supply cylinder 44 to the inner wall of the heating box 21. When the push-pull plate 432 moves away from the inside of the air supply cylinder 44, the first one-way valve opens and the second one-way valve closes, thereby delivering outside air into the inside of the air supply cylinder 44. When it is necessary to treat the surface moisture of the plastic particles accumulated around the isolation plate 122, the hot water inside the heating box 21 enters the installation plate 213 through the water inlet pipe 212. The hot water drives the rotating rod 41 to rotate through the rotating plate, causing the rotating rod 41 to rotate through the limiting plate 411, which in turn drives the limiting rod 412 to rotate. The limiting rod 412 drives the swing plate 42 to swing back and forth through the swing groove 421, causing the swing plate 42 to drive the push-pull plate 43 to slide back and forth through the hinge strip 422. This causes the push-pull plate 43 to drive the push-pull plate 432 to slide back and forth inside the air supply cylinder 44 through the push-pull rod 431, thereby allowing the air inside the air supply cylinder 44 to pass through the air supply pipe 44. 1. The heat generated by the heating wire on the inner wall of the heating box 21 and the air delivered by the air pipe 441 form hot air. The hot air is then continuously input through the hot air pipe 456 and then sequentially delivered through the distribution plate 455, support bar 454, distribution ring 453 and connecting pipe 452 to the inside of the fixing ring 45. Then it is sprayed out through the air nozzle 451, and the hot air sprayed out by the air nozzle 451 blows the plastic particles at the top edge of the isolation plate 122, thereby removing the moisture on the surface of the plastic particles at the top edge of the isolation plate 122, thus ensuring that the overall dryness of the plastic particles is consistent and does not affect the subsequent molding quality.

[0025] Working principle: During use, plastic granules are poured into the feed cylinder 12 through the feed pipe 121, so that the plastic granules are located on top of the isolation plate 122. When it is necessary to remove moisture from the surface of the plastic granules, the water pump 211 is started. The water pump 211 delivers hot water from the heating box 21 to the fixed plate 22 through the water inlet pipe 212. Then, the hot water in the fixed plate 22 is delivered to the rotating cylinder 23 through the water delivery pipe 221. The hot water flows into the flow strip 233 through the water inlet channel 231, and then into the other flow strips 233 through the flow pipe 234. The hot water in the flow strips 233 flows back into the heating box 21 through the return water channel 232 and the return water pipe 235. The hot water circulates within the heating box 21, treating the surface moisture of the plastic granules. When the hot water inside the heating box 21 enters the fixed plate 22 through the inlet pipe 212, the hot water drives the rotating cylinder 23 to rotate via the fixed plate 31. This rotating cylinder 23 then drives the flow strip 233 to rotate, causing the clumped plastic granules to be squeezed against the extrusion strip 32. This squeezing breaks up the clumped plastic granules, preventing them from clumping together and ensuring the subsequent molding quality. When the hot water inside the heating box 21 enters the mounting plate 213 through the inlet pipe 212, the hot water drives the rotating rod 41 to rotate via the rotating plate. The limiting plate 411 drives the limiting rod 412 to rotate. The limiting rod 412 drives the swing plate 42 to swing back and forth through the swing groove 421. The swing plate 42 drives the push-pull plate 43 to slide back and forth through the hinge strip 422. In turn, the push-pull plate 43 drives the push-pull plate 432 to slide back and forth inside the air supply cylinder 44 through the push-pull rod 431. This allows the air inside the air supply cylinder 44 to be transported to the inner wall of the heating box 21 through the air supply pipe 441. The heat generated by the heating wire on the inner wall of the heating box 21 and the air transported through the air supply pipe 441 form hot air. The hot air is then continuously input through the hot air pipe 456 and then sequentially passes through the distribution plate 455, support strip 454, distribution ring 453 and connecting pipe 452. The material is conveyed into the fixed ring 45 and then sprayed out through the nozzle 451. The hot air sprayed out by the nozzle 451 blows the plastic particles at the top edge of the isolation plate 122, thereby removing the moisture from the surface of the plastic particles at the top edge of the isolation plate 122. This ensures that the overall dryness of the plastic particles is consistent and does not affect the subsequent molding quality. After the treatment is completed, the solenoid valve is opened, allowing the treated plastic particles to enter the bottom of the isolation plate 122 through the discharge pipe 123. Then, the plastic particles at the bottom of the isolation plate 122 enter the interior of the molding extruder 1 to melt. After that, the melted material is conveyed to the mold assembly 11, which molds the melted material into automotive plastic parts.

[0026] Any content not described in detail in this specification is prior art known to those skilled in the art.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Parallelism: The parallelism defined in this application is not limited to absolute parallelism. This definition of parallelism can be understood as basic parallelism. It allows for situations where the parallelism is not absolute due to factors such as assembly tolerance, design tolerance, and structural flatness. It also allows for errors within a small angular range, such as within 10 degrees of assembly error. These can all be considered as parallel relationships.

[0029] Perpendicularity: The perpendicularity defined in this application is not limited to an absolute perpendicular intersection (with an included angle of 90 degrees). It is permissible for non-absolute perpendicular intersections caused by factors such as assembly tolerances, design tolerances, and structural flatness. It is permissible for errors within a small angular range, such as an assembly error range of 80 to 100 degrees, which can all be understood as a perpendicular relationship.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An extrusion unit for automotive plastic parts utilizing waste plastics, comprising: A forming extruder (1) and a die assembly (11) disposed on top of the forming extruder (1), characterized in that: A feed cylinder (12) is provided at the top of the forming extruder (1). An isolation disc (122) is fixedly connected inside the feed cylinder (12), and an installation box (124) is fixedly connected to the surface of the feed cylinder (12). A dewatering assembly (2) is disposed inside the feed cylinder (12) for removing moisture from the surface of the raw materials. The dewatering assembly (2) includes a fixed disk (22) fixedly connected to the top of the feed cylinder (12). A rotating cylinder (23) is rotatably connected inside the fixed disk (22). A plurality of flow strips (233) are fixedly connected to the surface of the rotating cylinder (23). The plurality of flow strips (233) are connected to each other through a flow pipe (234). The anti-caking component (3) is installed inside the feed cylinder (12) to prevent the volatilized water vapor from causing the raw material to clump together and affecting subsequent molding when the water removal component (2) removes water vapor from the surface of the raw material. The anti-sinking component (4) is installed inside the feed cylinder (12) to prevent the raw material at the top edge of the isolation disc (122) from turning into carbon particles due to long-term heating, thereby affecting the molding of subsequent plastic parts.

2. The automotive plastic parts extrusion unit utilizing waste plastics according to claim 1, characterized in that: The dewatering assembly (2) also includes a heating box (21) fixedly connected inside the mounting box (124). A water pump (211) is provided on the top of the heating box (21), and a water pump pipe is provided on the bottom of the water pump (211). The water pump pipe extends into the interior of the heating box (21). A water inlet pipe (212) is fixedly connected to the top of the water pump (211). A mounting plate (213) is fixedly connected to the surface of the water inlet pipe (212). The end of the water inlet pipe (212) away from the water pump (211) is fixedly connected to the surface of the mounting plate (22).

3. The automotive plastic parts extrusion unit utilizing waste plastics according to claim 2, characterized in that: The rotating cylinder (23) has a water inlet channel (231) at the top and a water return channel (232) at the bottom. The water inlet channel (231) is fixedly connected to several flow strips (233) at the top and the water return channel (232) is fixedly connected to several flow strips (233) at the bottom.

4. The automotive plastic parts extrusion unit utilizing waste plastics according to claim 3, characterized in that: The fixed plate (22) is connected to the water inlet channel (231) via a water supply pipe (221), and the heating box (21) is connected to the water return channel (232) via a water return pipe (235). The top of the water supply pipe (221) and the water inlet channel (231) are rotatably connected, and the bottom of the water return pipe (235) and the water return channel (232) are rotatably connected.

5. The automotive plastic parts extrusion unit utilizing waste plastics according to claim 1, characterized in that: The anti-caking component (3) includes several fixed pieces (31) fixedly connected to the surface of the rotating cylinder (23) and several extrusion strips (32) fixedly connected to the inside of the feed cylinder (12). The fixed pieces (31) are arranged inside the fixed plate (22), and the extrusion strips (32) are respectively located between two adjacent flow strips (233).

6. The automotive plastic parts extrusion unit utilizing waste plastics according to claim 2, characterized in that: The anti-sinking component (4) includes a rotating rod (41) rotatably connected inside the mounting box (124) and a swing plate (42) rotatably connected to the top of the heating box (21). A plurality of rotating plates are fixedly connected to the surface of the rotating rod (41), and the plurality of rotating plates are arranged inside the mounting plate (213). One end of the rotating rod (41) is fixedly connected to a limiting plate (411), and the end of the limiting plate (411) away from the rotating rod (41) is fixedly connected to a limiting rod (412). One end of the swing plate (42) is provided with a swing groove (421), and the limiting rod (412) is arranged inside the swing groove (421).

7. An automotive plastic parts extrusion unit utilizing waste plastics according to claim 6, characterized in that: The anti-sinking component (4) also includes a push-pull plate (43) slidably connected inside the mounting box (124) and several air cylinders (44) fixedly connected inside the mounting box (124). One side of the push-pull plate (43) is connected to the swing plate (42) by a hinge strip (422). Several push-pull rods (431) are fixedly connected to the surface and back of the push-pull plate (43). A push-pull plate (432) is fixedly connected to the end of the push-pull rods (431) away from the push-pull plate (43). The push-pull plate (432) is slidably connected inside the air cylinder (44).

8. The automotive plastic parts extrusion unit utilizing waste plastics according to claim 7, characterized in that: The anti-sinking component (4) also includes a fixing ring (45) fixedly connected to the bottom of the isolation plate (122). The top of the fixing ring (45) is fixedly connected to a plurality of air nozzles (451), and the bottom of the fixing ring (45) is fixedly connected to a plurality of connecting pipes (452). The bottom of the plurality of connecting pipes (452) is fixedly connected to a distribution ring (453). A distribution plate (455) is provided in the middle of the distribution ring (453). The distribution plate (455) and the distribution ring (453) are fixedly connected by a support strip (454).

9. An automotive plastic parts extrusion unit utilizing waste plastics according to claim 8, characterized in that: The inner wall of the heating box (21) is provided with a number of heating wires, and the number of air supply cylinders (44) are connected to the inner wall of the heating box (21) through air supply pipes (441). The distribution plate (455) is connected to the inner wall of the heating box (21) through hot air pipes (456).

10. An automotive plastic parts extrusion unit utilizing waste plastics according to claim 1, characterized in that: The top of the feed cylinder (12) is fixedly connected to the feed pipe (121), and the bottom of the isolation plate (122) is fixedly connected to two discharge pipes (123). Solenoid valves are provided on the surface of both discharge pipes (123).

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