Material head recycling equipment for automobile sealing strip extrusion

Abstract

The invention relates to the technical field of plastic recycling, in particular to material head recycling equipment for automobile sealing strip extrusion, which comprises a plastic shredding device and a cleaning system matched with the plastic shredding device for use, the cleaning system comprises a polishing part, a cleaning part and a dewatering part which are communicated with one another, and the polishing part, the cleaning part and the dewatering part are arranged in sequence; in other words, the stub bar is firstly ground and then directly enters the cleaning part in the axial direction, dewatering is conducted after cleaning is completed, and finally the dewatered stub bar directly enters the plastic shredding device to be shredded and recycled; the whole system sequentially passes through the grinding part, the cleaning part and the dewatering part from the feeding cylinder to the plastic shredding device, all the steps are closely connected, manual intervention or additional transfer is not needed, the operation process is greatly simplified, the labor cost is reduced, the whole production efficiency is improved, and the whole recycling process is smoother and more efficient.

Description

Technical Field

[0001] The invention relates to the technical field of plastic recycling, in particular to a material head recycling device for automobile sealing strip extrusion. Background Art

[0002] Automobile plastic sealing strips are mainly used for sealing automobile doors and windows, car bodies, automobile engines and other parts. The materials are mostly polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), etc. These sealing strips are usually produced by extrusion process, which will produce a certain amount of waste or scraps, such as material heads, etc. In order to reduce costs and reduce the impact on the environment, it is particularly important to recycle and reuse these wastes.

[0003] In the crushing and recycling process of plastic slugs, it is usually necessary to pre-clean these slugs, or to perform cleaning and drying steps again after the crushing process to ensure that the materials are suitable for subsequent reuse. However, the slugs after extrusion are often in a semi-molten state, which is easy to absorb dust and impurities. Once these slugs cool and solidify, impurities will firmly adhere to their surface. At this time, it is difficult to completely remove these stubborn impurities by simply flushing, which affects the quality and purity of the recycled materials; at the same time, some equipment can pre-clean, grind and dry the slugs, but they are often transferred continuously through conveyor lines to achieve different treatments of the slugs, and the transfer will consume more manpower and material resources.

[0004] Based on this, the present invention discloses a material head recovery device for automobile sealing strip extrusion. Summary of the invention

[0005] In order to solve the problem that in the crushing and recycling process of plastic slugs proposed in the background technology, the slugs are in a semi-molten state after extrusion and are easy to absorb dust and impurities, and it is difficult to completely remove them by simple washing after cooling and solidification, thereby affecting the quality and purity of the recycled materials, and at the same time, the existing grinding, cleaning, drying and other steps require multiple transfers and transportations to complete different steps, which affects the work efficiency, the present invention provides a slug recycling device for automobile sealing strip extrusion, which includes a plastic shredding device and a cleaning system used in conjunction with the device, and the cleaning system includes a grinding part, a cleaning part and a dehydration part which are interconnected, and the grinding part, the cleaning part and the dehydration part are arranged in sequence; One of the technical solutions, in order to solve the problem of solidified impurities attached to the surface of the material head, introduced a grinding unit; As a further improvement of the present technical solution, the grinding part includes a first rotating cylinder and a high-speed rotating grinding cylinder, the grinding cylinder is fixed in the first rotating cylinder, a first impurity chamber is formed between the grinding cylinder and the first rotating cylinder, a mounting cylinder is arranged inside the grinding cylinder for reverse rotation, a grinding chamber is formed between the mounting cylinder and the first spiral push blade, the mounting cylinder is provided with a first spiral push blade, a plurality of steam spray holes are opened between the pitches of the first spiral push blade, and the surface of the mounting cylinder and the inner wall of the grinding cylinder are both made of frosted material.

[0006] As a further improvement of the present technical solution, a first driving assembly is arranged outside the first rotating drum, and the first driving assembly includes a first driving gear fixed on the first rotating drum and a first driving motor symmetrically arranged on both sides of the first driving gear, the first driving motor is fixed on the mounting frame, and the first driving gear is driven to rotate by the first driving motor.

[0007] In this technical solution, some impurities and debris after grinding form a sewage mixture after heat exchange with high-temperature and high-pressure steam and need to be discharged from the grinding chamber. After grinding away the solidified impurities, the material head can be pre-cleaned in advance. As a further improvement of the technical solution, the grinding cylinder is evenly provided with a plurality of filter grooves extending through the grinding cylinder along the axial direction, and filter screens are arranged on the filter grooves; secondly, a feeding cylinder is rotatably connected to one end of the first rotating cylinder away from the cleaning portion, and the feeding cylinder is communicated with the grinding chamber.

[0008] In this technical solution, since the grinding cylinder rotates at a high speed, in order to increase the chance of the material head constantly rubbing against the surface of the mounting cylinder and the inner surface of the grinding cylinder, the material head located in each interval needs to be stirred to a certain extent; As a further improvement of the technical solution, stirring rods are arranged on both sides of the steam spray hole on the mounting cylinder.

[0009] In another technical solution, the material heads after being polished and pre-cleaned in the polishing section are concentrated in the cleaning section for special cleaning to reduce the stains and impurities on the material heads, and a corresponding cleaning section is set after the polishing section; As a further improvement of the present technical solution, the cleaning part includes a second spiral push blade coaxially connected with the first spiral push blade along the conveying direction of the first spiral push blade, and the second spiral push blade is arranged in the first filter cartridge; one end of the first filter cartridge is fixed on the mounting frame, and a water spray device with a spray length matched with the length of the first filter cartridge is arranged on the mounting frame directly above the first filter cartridge; one end of the first filter cartridge is rotatably connected to the first rotating drum, and the first filter cartridge is communicated with the grinding chamber; the other end of the first filter cartridge is rotatably connected to the dehydration part.

[0010] In order to allow the material head to be turned over and stirred as a whole while being transported in the first filter cylinder; As a further improvement of the technical solution, the radius of the rotating rod is smaller than the radius of the mounting cylinder, the outer diameter of the second spiral push blade is larger than the outer diameter of the first spiral push blade, and the outer diameter of the second spiral push blade is adapted to the inner diameter of the first filter cylinder.

[0011] On this basis, since the water content of the material head is high due to flushing, it is necessary to dry the material head, so a dehydration part is coaxially arranged in the subsequent process, and the material head is directly transported to the dehydration step through the coaxial process; and for the centrifugal dehydration method, due to the centrifugal force, the closer the material head is to the outer layer, the better the dehydration effect is, that is, the phenomenon of dehydration stratification occurs; As a further improvement of the present technical solution, the dehydration part includes a third spiral push blade coaxially connected to the second spiral push blade; the third spiral push blade is arranged in the second filter cylinder, the second filter cylinder is rotated at a high speed through a second drum sleeved outside the second filter cylinder, and a second drive assembly is arranged outside the second drum, the second drive assembly includes a second drive gear fixed on the second drum, second drive motors are symmetrically arranged on both sides of the second drive gear, the second drive motor is fixed on the mounting frame, and the second drive motor drives the second drive gear to rotate; the second drum is rotatably connected to the end of the first filter cylinder away from the first drum, and the first filter cylinder is communicated with the second filter cylinder.

[0012] In order to achieve that the third spiral push blade delivers the material head close to the inner wall of the second filter cylinder each time; As a further improvement of the present technical solution, the outer diameter of the second spiral push blade is matched with the outer diameter of the third spiral push blade, the central axial direction of the third spiral push blade is set to a hollow structure, and the outer diameter of the third spiral push blade is matched with the inner diameter of the second filter cartridge.

[0013] As a further improvement of the technical solution, a hopper is provided at one end of the second filter cartridge away from the first filter cartridge, and the hopper is connected to the plastic shredding device.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This is a kind of material head recovery equipment for automobile sealing strip extrusion. By setting a grinding part (including a first rotating cylinder, a grinding cylinder and a mounting cylinder), high-speed rotation and the inner surface of the frosted material are rubbed against each other, and the surface of the material head is softened with high-temperature and high-pressure steam spray holes, so that the attached impurities can be effectively polished off, solving the problem that simple flushing in traditional methods cannot completely remove impurities, and ensuring the purity of the recycled materials. In addition, the filter net realizes the effective separation of sewage and material heads, further improving the cleaning efficiency.

[0015] 2. This type of material head recovery equipment used for extrusion of automobile sealing strips directly enters the cleaning section (including the second spiral push blade and the first filter cartridge) after grinding, and the material head is fully cleaned by a continuous spraying device. At the same time, the activity space of the material head is increased to promote comprehensive cleaning. Compared with the method of multiple transfers and conveyings in the prior art to complete different steps, this design reduces the number of material transfers, improves work efficiency, and also ensures the cleaning quality of the material head.

[0016] 3. This type of equipment is used in the recovery of material heads for extrusion of automobile sealing strips. It adopts centrifugal dehydration method (third spiral push blade, second filter cartridge) and is designed to only transport the material heads close to the outer layer each time to achieve the best dehydration effect. At the same time, the inner layer material heads will automatically fill in due to centrifugal force, which not only improves the dehydration efficiency, but also avoids the influence of excessive water content on the subsequent shredding and recycling process, thereby ensuring the quality of the final recycled material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural cross-sectional view of the first rotating drum of the present invention; Figure 3 for Figure 2 A magnified view of the structure at center A; Figure 4 It is a structural cross-sectional view of the grinding cylinder of the present invention; Figure 5 for Figure 4 A magnified view of the structure at B in the middle; Figure 6 It is a structural cross-sectional view of the first filter cartridge of the present invention; Figure 7 for Figure 6 A magnified view of the structure at C in the middle; Figure 8 is a structural cross-sectional view of the second rotating drum of the present invention; Fig. 9 for Figure 8 A magnified view of the structure at D in the middle; Fig.10 It is a schematic diagram of the structure of the spiral pusher blade of the present invention.

[0018] The meaning of each number in the figure is: 1. Mounting frame; 2. First rotating drum; 3. Feeding drum; 4. First impurity chamber; 5. Grinding drum; 6. Filter tank; 7. Filter screen; 8. Mounting drum; 9. First spiral push blade; 10. Grinding chamber; 11. Steam spray hole; 12. Stirring rod; 13. Rotating rod; 14. Second spiral push blade; 15. First filter drum; 16. Second rotating drum; 17. Second filter drum; 18. Second impurity chamber; 19. Third spiral push blade; 20. Steam inlet; 21. First driving gear; 22. First driving motor; 23. Second driving gear; 24. Second driving motor; 25. Water spray device; 26. Hopper; 27. Plastic tearing device. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the existing crushing and recycling process of plastic slugs, since the slugs are in a semi-molten state after extrusion and are easily adsorbed with dust and impurities, it is difficult to completely remove them by simple rinsing after cooling and solidification, thus affecting the quality and purity of the recycled materials. At the same time, the existing grinding, cleaning, drying and other steps require multiple transfers and transportations to complete different steps, affecting work efficiency.

[0021] To this end, the present invention provides a material head recovery device for automobile sealing strip extrusion, see Figure 1-Figure 5 As shown, it includes a plastic shredding device 27 and a cleaning system used in conjunction with it. The cleaning system includes a grinding part, a cleaning part and a dehydration part which are interconnected, and the grinding part, the cleaning part and the dehydration part are arranged in sequence, that is, the material head is firstly ground, and then directly enters the cleaning part along the axial direction, and is dehydrated after cleaning. Finally, the dehydrated material head directly enters the plastic shredding device 27 for shredding and recycling.

[0022] Specifically, the grinding part includes a first rotating cylinder 2 and a high-speed rotating grinding cylinder 5, the grinding cylinder 5 is fixed in the first rotating cylinder 2, a first impurity chamber 4 is formed between the grinding cylinder 5 and the first rotating cylinder 2, a mounting cylinder 8 is arranged inside the grinding cylinder 5 for reverse rotation, a grinding chamber 10 is formed between the mounting cylinder 8 and the first spiral pushing blade 9, the mounting cylinder 8 is provided with the first spiral pushing blade 9, a plurality of steam spray holes 11 are opened between the pitches of the first spiral pushing blade 9, stirring rods 12 are arranged on both sides of the steam spray holes 11 on the mounting cylinder 8, and the surface of the mounting cylinder 8 and the inner wall of the grinding cylinder 5 are both made of frosted material.

[0023] If the first rotating drum 2 is required to drive the grinding drum 5 to rotate at high speed, a first driving assembly is provided outside the first rotating drum 2, and the first driving assembly includes a first driving gear 21 fixedly mounted on the first rotating drum 2 and a first driving motor 22 symmetrically arranged on both sides of the first driving gear 21. The first driving motor 22 is fixedly mounted on the mounting frame 1, and the first driving gear 21 is driven to rotate by the first driving motor 22.

[0024] In addition, some impurities and debris after grinding form a sewage mixture after heat exchange with high-temperature and high-pressure steam, which needs to be discharged from the grinding chamber 10. After grinding away the solidified impurities, the material head is pre-cleaned in advance. Therefore, the grinding cylinder 5 is evenly provided with a plurality of filter grooves 6 along the axial direction, and the filter grooves 6 are provided with filter screens 7; secondly, the end of the first rotating cylinder 2 away from the cleaning part is rotatably connected to the feeding cylinder 3, and the feeding cylinder 3 is communicated with the grinding chamber 10.

[0025] During operation, the material head is directly poured into the feeding barrel 3, and then the mounting barrel 8 is driven to rotate by the rotating rod 13 coaxially connected thereto, and the rotation of the rotating rod 13 is driven to rotate by the corresponding driving device, and the mounting barrel 8 rotates through the first spiral pushing blade 9 thereon to send the material head into the grinding chamber 10, and the grinding chamber 10 is divided into several sections by the first spiral pushing blade 9 arranged on the mounting barrel 8, and each section is correspondingly provided with a steam spray hole 11, so that when the material head gradually enters the next section step by step, it will be heated and softened by the steam spray hole 11, and the high-temperature and high-pressure steam sprayed by the steam spray hole 11 The steam is supplied through a steam inlet 20 opened on one side of the rotating rod 13; it should be noted that the grinding part is aimed at amorphous plastics such as PS and PC, and has a better softening effect on this part of plastics; specifically, since a number of intervals are formed between the first spiral pushing blade 9 and the inner wall of the grinding cylinder 5, each interval will form an approximately closed space under the high-speed rotation of the grinding cylinder 5, and these high-temperature and high-pressure steams will act on the material head, exchange heat with the material head, so that the surface of the material head is softened, and the softened material head is then subjected to the high-speed rotation of the grinding cylinder 5, so that the material head and the surface of the mounting cylinder 8 and the inner surface of the grinding cylinder 5 are continuously rubbed to grind off impurities.

[0026] It should be noted that, due to the high-speed rotation of the grinding cylinder 5, in order to increase the chance of continuous friction between the material head and the surface of the mounting cylinder 8 and the inner surface of the grinding cylinder 5, the material head located in each interval needs to be stirred to a certain extent. Because the high-speed rotation of the grinding cylinder 5 will cause the material head to also have a certain centrifugal force, the material head will tend to stick to the inner wall of the grinding cylinder 5, which is not conducive to grinding. Therefore, the setting of the stirring rod 12 enables the grinding cylinder 5 to drive the material head to rotate at a high speed for grinding, which can play a stirring role and increase the grinding effect.

[0027] Secondly, the rotation speed of the installation cylinder 8 is much different from that of the grinding cylinder 5. The rotation of the installation cylinder 8 is to drive the first spiral push blade 9 to transport the material head step by step. In the process of step-by-step transportation in the grinding chamber 10, the grinding effect of the material head is continuously increased, and the problem of uneven grinding caused by traditional single-interval grinding is further solved; in addition, the material head will form liquid water after heat exchange with the steam sprayed from the steam nozzle 11, and then mix with the impurities polished to form sewage. This sewage needs to be discharged to avoid contamination of the material head, and the high-speed rotating grinding cylinder 5 can also realize the separation of the material head and sewage, because the sewage carrying impurities will flow directly out of the filter screen 7 through centrifugal force, filter the material head into the grinding chamber 10, and the sewage and impurities will enter the first impurity chamber 4 through the filter screen 7, and then be directly discharged through the corresponding drainage device or drainage pipe. Therefore, the grinding, pre-cleaning, and separation of sewage and material head are realized in the grinding part.

[0028] For further information, see Figure 6 and Figure 7 As shown, the material heads after being polished and pre-cleaned by the polishing section are concentrated into the cleaning section for special cleaning to reduce the stains and impurities on the material heads; therefore, a corresponding cleaning section is set after the polishing section, and the cleaning section includes a second spiral push blade 14 coaxially connected with the first spiral push blade 9 along the conveying direction of the first spiral push blade 9, and the second spiral push blade 14 is arranged in the first filter cylinder 15; one end of the first filter cylinder 15 is fixed on the mounting frame 1, and a water spray device 25 with a spray length adapted to the length of the first filter cylinder 15 is arranged on the mounting frame 1 directly above the first filter cylinder 15; one end of the first filter cylinder 15 is rotatably connected to the first rotating cylinder 2, and the first filter cylinder 15 is connected to the polishing chamber 10; the other end of the first filter cylinder 15 is rotatably connected to the dehydration section; secondly, the radius of the rotating rod 13 is smaller than the radius of the mounting cylinder 8, the outer diameter of the second spiral push blade 14 is larger than the outer diameter of the first spiral push blade 9, and the outer diameter of the second spiral push blade 14 is adapted to the inner diameter of the first filter cylinder 15.

[0029] During operation, the polished material head is pushed step by step by the first spiral push blade 9 and finally enters the first filter cylinder 15. Since the radius of the rotating rod 13 is smaller than the radius of the installation cylinder 8, and the outer diameter of the second spiral push blade 14 is larger than the outer diameter of the first spiral push blade 9, when the material head enters each interval in the first filter cylinder 15, the activity space of the material head is increased. Figure 5 and Figure 7By comparison, it can be seen that the grinding chamber 10 has a smaller movable space in order to increase the contact opportunity between the material head and the surface of the frosted material and improve the grinding effect. The first filter barrel 15 provides a larger movable space through the larger second spiral push blade 14 and the smaller rotating rod 13, so that the material head can be turned over and stirred as a whole while being transported in the first filter barrel 15. Combined with the continuous spraying on the first filter barrel 15, the excess impurities in the material head can be directly cleaned away after passing through the first filter barrel 15.

[0030] For further information, see Figure 1 , Figure 8 and Fig.10 As shown, the material heads after uniform flushing can basically guarantee a certain degree of cleanliness, and then they need to be shredded for subsequent recycling. However, due to the flushing, the water content of the material heads is relatively high, which is not conducive to subsequent shredding and recycling, and the material heads need to be dried. The present invention adopts a coaxial conveying method and a centrifugal dehydration method to achieve the drying of the material heads. As for the centrifugal dehydration method, due to the centrifugal force, the closer the material heads are to the outer layer, the better the dehydration effect, that is, the phenomenon of dehydration stratification occurs; therefore, for the device that uses this method to dehydrate, in order to improve the dehydration effect and meet the continuous supply demand of the front-end cleaning part, each spiral conveying only transports the material heads close to the outer layer in the dehydration part, and the material heads close to the inner layer will gradually approach and replace the outer layer through centrifugal force. Therefore, the dehydration effect can be improved, so that the material heads transported out of the dehydration part each time are the material heads closest to the outer layer; Specifically, the dehydration part includes a third spiral push blade 19 coaxially connected with the second spiral push blade 14; the third spiral push blade 19 is arranged in the second filter drum 17, the second filter drum 17 is rotated at a high speed through the second drum 16 sleeved outside the second filter drum 17, and a second driving assembly is arranged outside the second drum 16, the second driving assembly includes a second driving gear 23 fixed on the second drum 16, and the second driving motor 24 is symmetrically arranged on both sides of the second driving gear 23, the second driving motor 24 is fixed on the mounting frame 1, and the second driving motor 24 drives the second driving gear 23 to rotate; the second drum 16 is rotatably connected to the end of the first filter drum 15 away from the first drum 2, and the first filter drum 15 is connected to the second filter drum 17; In order to achieve that each time the third spiral push blade 19 conveys the material head close to the inner wall of the second filter cartridge 17, that is, the material head close to the outer layer, the outer diameter of the second spiral push blade 14 is adapted to the outer diameter of the third spiral push blade 19, and the central axial direction of the third spiral push blade 19 is set to be a hollow structure, and the outer diameter of the third spiral push blade 19 is adapted to the inner diameter of the second filter cartridge 17; it can be seen from this that the hollow structural feature of the third spiral push blade 19 enables the third spiral push blade 19 to spirally convey the part of the material head that is in contact with the inner wall of the second filter cartridge 17, and when that part of the material head is conveyed out, due to The centrifugal force generated by the high-speed rotation of the second filter cartridge 17 will cause the inner material head to fill its position and become a new outer layer. This process will continue, further improving the dehydration effect of the material head. After high-speed rotation, the water on the material head will pass through the second filter cartridge 17 into the second impurity chamber 18 between the second rotating drum 16 and the second filter cartridge 17. The water in the second impurity chamber 18 will then be discharged uniformly by the corresponding drain pipe or drainage device. In addition to achieving dehydration, this dehydration section also serves as a guarantee for the subsequent impurity separation, because the second filter cartridge 17 drives the material head to rotate at high speed, and at the same time, the centrifugal force can also separate the uncleaned impurities and water.

[0031] Finally, a hopper 26 is provided at one end of the second filter cartridge 17 away from the first filter cartridge 15, and the hopper 26 is connected to the plastic shredding device 27. That is to say, the part of the plastic head that has completed dehydration and is close to the inner wall of the second filter cartridge 17 is transported by the third spiral pushing blade 19 and finally enters the plastic shredding device 27 to complete shredding and recycling.

[0032] In summary, by integrating the four main steps of grinding, cleaning, dehydration and shredding into one design, especially the seamless connection between the grinding part (first drum 2, grinding drum 5), the cleaning part (first filter drum 15, second spiral push blade 14), the dehydration part (second filter drum 17, third spiral push blade 19) and the plastic shredding device 27, the overall operation realizes a one-stop processing from raw material input to finished product output, which greatly improves the resource recycling rate and production efficiency; and thus effectively solves the existing problem of crushing and recycling of plastic material heads, because the material heads are in a semi-molten state after extrusion and are easy to absorb dust and impurities, and simple rinsing after cooling and solidification is difficult to completely remove, thereby affecting the quality and purity of the recycled materials. At the same time, the existing grinding, cleaning, drying and other steps require multiple transfers and transportations to complete different steps, affecting work efficiency.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A material head recovery device for automobile sealing strip extrusion, characterized in that: It comprises a plastic shredding device (27) and a cleaning system used in conjunction with the plastic shredding device, wherein the cleaning system comprises a grinding part, a cleaning part and a dehydration part which are interconnected; The grinding section comprises a high-speed rotating grinding cylinder (5), a mounting cylinder (8) is arranged inside the grinding cylinder (5) to rotate in the opposite direction, a grinding chamber (10) is formed between the mounting cylinder (8) and the first spiral pushing blade (9), the mounting cylinder (8) is provided with the first spiral pushing blade (9), a plurality of steam spray holes (11) are provided between the pitches of the first spiral pushing blade (9), stirring rods (12) are arranged on both sides of the steam spray holes (11) on the mounting cylinder (8), and the surface of the mounting cylinder (8) and the inner wall of the grinding cylinder (5) are both made of frosted material; The grinding cylinder (5) is evenly provided with a plurality of filter grooves (6) extending therethrough in the axial direction, and a filter screen (7) is provided on the filter grooves (6); The cleaning section comprises a second spiral push blade (14) coaxially connected to the first spiral push blade (9) along a conveying direction of the first spiral push blade (9), the second spiral push blade (14) being arranged in the first filter cartridge (15); The dehydration section comprises a third spiral push blade (19) coaxially connected to the second spiral push blade (14); the third spiral push blade (19) is arranged in a second filter cylinder (17); and the second filter cylinder (17) rotates at high speed through a second rotating cylinder (16) sleeved outside the second filter cylinder (17).

2. The material head recovery equipment for automobile sealing strip extrusion according to claim 1 is characterized in that: The grinding section further comprises a first rotating drum (2), wherein the grinding drum (5) is fixedly mounted inside the first rotating drum (2), a first impurity chamber (4) is formed between the grinding drum (5) and the first rotating drum (2), a first driving assembly is arranged outside the first rotating drum (2), the first driving assembly comprises a first driving gear (21) fixedly mounted on the first rotating drum (2) and a first driving motor (22) symmetrically arranged on both sides of the first driving gear (21), the first driving motor (22) being fixedly mounted on the mounting frame (1), and the first driving gear (21) is driven to rotate by the first driving motor (22).

3. The material head recovery equipment for automobile sealing strip extrusion according to claim 1 is characterized in that: The mounting cylinder (8), the first spiral push blade (9), the second spiral push blade (14), and the third spiral push blade (19) are all connected by a rotating rod (13) rotatably connected to the mounting frame (1), and the mounting cylinder (8), the first spiral push blade (9), the second spiral push blade (14), and the third spiral push blade (19) are coaxially arranged with the rotating rod (13).

4. The material head recovery device for automobile sealing strip extrusion according to claim 3 is characterized in that: A steam inlet (20) connected to a plurality of steam spray holes (11) in the mounting cylinder (8) is provided on one end of the rotating rod (13) adjacent to the first rotating cylinder (2).

5. The material head recovery equipment for automobile sealing strip extrusion according to claim 3 is characterized in that: One end of the first rotating drum (2) away from the first filtering drum (15) is rotatably connected to a feeding drum (3), and the feeding drum (3) is in communication with the grinding chamber (10).

6. The material head recovery equipment for automobile sealing strip extrusion according to claim 3 is characterized in that: One end of the first filter cartridge (15) is fixedly mounted on the mounting frame (1), and a water spray device (25) having a spray length matching the length of the first filter cartridge (15) is arranged on the mounting frame (1) directly above the first filter cartridge (15); One end of the first filter cylinder (15) is rotatably connected to the first rotating cylinder (2), and the first filter cylinder (15) is in communication with the grinding chamber (10); The other end of the first filter cartridge (15) is rotatably connected to the second rotating cartridge (16), and the first filter cartridge (15) is in communication with the second filter cartridge (17).

7. The material head recovery device for automobile sealing strip extrusion according to claim 6 is characterized in that: The radius of the rotating rod (13) is smaller than the radius of the mounting cylinder (8), the outer diameter of the second spiral pushing blade (14) is larger than the outer diameter of the first spiral pushing blade (9), and the outer diameter of the second spiral pushing blade (14) is compatible with the inner diameter of the first filter cylinder (15).

8. The material head recovery device for automobile sealing strip extrusion according to claim 7 is characterized in that: The outer diameter of the second spiral push blade (14) matches the outer diameter of the third spiral push blade (19); the central axial direction of the third spiral push blade (19) is arranged as a hollow structure; and the outer diameter of the third spiral push blade (19) matches the inner diameter of the second filter cartridge (17).

9. The material head recovery equipment for automobile sealing strip extrusion according to claim 1 is characterized in that: A second driving assembly is arranged outside the second rotating drum (16), the second driving assembly comprising a second driving gear (23) fixedly mounted on the second rotating drum (16), second driving motors (24) being symmetrically arranged on both sides of the second driving gear (23), the second driving motor (24) being fixedly mounted on the mounting frame (1), and the second driving motor (24) driving the second driving gear (23) to rotate.

10. The material head recovery equipment for automobile sealing strip extrusion according to claim 1, characterized in that: A hopper (26) is provided at one end of the second filter cartridge (17) away from the first filter cartridge (15), and the hopper (26) is connected to the plastic shredding device (27).

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