A spiral automatic feeding machine for PET plastic processing and a method thereof

Abstract

The application relates to the technical field of spiral automatic feeding machines, and discloses a spiral automatic feeding machine for PET plastic processing and a method thereof, which comprises a feeding hopper, a plurality of supporting legs fixedly connected to the lower side of the feeding hopper, and a feeding cylinder fixedly connected to the lower side of the feeding hopper. In the application, the pushing rod pushes the friction base to slide along the fixed square rod; when the friction base contacts the friction ring, the friction ring is slidingly connected to the inner wall of the conveying rotary column, so that the friction ring is rotated when the conveying rotary column rotates; when the friction block on the friction base contacts the friction ring, the friction block and the friction ring are rubbed, heat is generated by the friction between the friction block and the linkage rod, the friction ring slidingly connected to the inner wall of the conveying rotary column conducts the generated heat to the outer wall of the conveying rotary column through heat conduction, and the moisture on the surface of the plastic contacting the conveying rotary column is evaporated.

Description

Technical Field

[0001] This invention relates to the technical field of automatic spiral feeder equipment, specifically to an automatic spiral feeder and method for PET plastic processing. Background Technology

[0002] PET plastic, short for polyethylene terephthalate, is a commonly used thermoplastic resin widely used in the manufacture of plastic bottles, food packaging, fibers, and engineering plastics. Before injection molding, the raw materials need to be dried. Because PET plastic macromolecules contain hydrophilic groups, they easily absorb moisture. If the moisture content exceeds the allowable value, defects such as silver streaks, bubbles, and shrinkage cavities will appear on the surface of the product. In severe cases, it can even lead to the degradation of the raw material, affecting the appearance and internal quality of the product. Therefore, these plastic raw materials must be dried before molding.

[0003] Existing PET plastic processing screw conveyors basically meet the function of automatic feeding. However, in the rainy and humid climate of southern regions, PET plastic raw materials contain moisture. During the processing of PET plastic raw materials, workers need to unseal the sealed PET plastic raw materials and put them through the screw conveyor. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic spiral feeder and method for PET plastic processing, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to an automatic spiral feeder and method for PET plastic processing, comprising a feeding hopper, several support legs fixedly connected to the lower part of the feeding hopper, a conveying cylinder fixedly connected to the lower part of the feeding hopper, a drive motor fixedly connected to the side of the conveying cylinder near the feeding hopper, an output shaft fixedly connected to the output end of the drive motor, a device housing fixedly connected to the outer wall of the conveying cylinder, and a discharge pipe fixedly connected to the end of the conveying cylinder away from the feeding hopper, and further comprising:

[0007] The conveying mechanism includes a conveying rotating column fixedly connected to the end of the output rotating shaft away from the drive motor. The side wall of the conveying rotating column is fixedly connected with helical blades, and the conveying rotating column is located at the central axis of the conveying cylinder.

[0008] Furthermore, a pushing mechanism is provided inside the conveying rotating column. The pushing mechanism includes a heating chamber inside the conveying rotating column. A fixed shaft is fixedly connected to the inner wall of the end of the conveying cylinder near the discharge pipe. A fixed square rod is fixedly connected to the end of the fixed shaft away from the conveying cylinder. The conveying rotating column has several bidirectional threaded grooves. A limit block is fixedly connected to the end of the fixed square rod away from the fixed shaft. Several pushing blocks are slidably connected to the fixed square rod. The pushing blocks are rotatably connected to the conveying rotating column through the bidirectional threaded grooves. Several pushing rods are fixedly connected to the side of the pushing block away from the limit block. An air inlet is provided at the central axis of the fixed shaft. The air inlet communicates with the heating chamber.

[0009] Furthermore, the conveying rotating column is equipped with a compression friction mechanism, which includes several friction bases slidably connected to a fixed square rod. Several pressing grooves are opened on the friction bases, and several compression springs are fixedly installed in the pressing grooves. A slider is slidably connected inside the pressing groove, and a linkage rod is rotatably connected to the slider. A friction block is rotatably connected to the end of the linkage rod away from the slider, and the friction block is slidably connected to the friction base through the pressing groove.

[0010] Furthermore, the extrusion friction mechanism also includes several friction grooves formed on the side wall of the conveying rotating column, friction rings are slidably connected in the friction grooves on the side wall of the conveying rotating column, several sealing blocks are fixedly connected on the fixed square rod, one-way air intake valves are fixedly connected on the sealing blocks, and a reset rod is fixedly connected to one end of the push block, the reset rod sliding through the sealing blocks.

[0011] Furthermore, the inside of the conveying cylinder is equipped with a heat dissipation mechanism, which includes a connecting block fixedly connected to the top of the friction ring, several heat dissipation grooves on the side wall of the conveying rotating column, a sliding guard plate fixedly connected to the end of the connecting block away from the friction ring, and an agitator fixedly connected to the side of the sliding guard plate away from the conveying rotating column, with several air outlets on the agitator.

[0012] Furthermore, the heat dissipation mechanism also includes a one-way vent valve fixedly connected to one end of the friction ring. The friction ring has an internal ventilation channel, and the heating chamber and the stirring rod are connected through the ventilation channel. Several sealing rods are slidably connected inside the heat dissipation groove, and a pressure spring is installed inside the heat dissipation groove. The sealing rods are pressed against the pressure spring.

[0013] Furthermore, a dust removal mechanism is provided inside the equipment casing. The dust removal mechanism includes several vent holes opened on the conveying cylinder. A filter plate is fixedly connected to the end of the equipment casing near the feed hopper, and a dust collection box is fixedly connected to the side wall of the end of the equipment casing near the feed hopper.

[0014] It includes the following steps:

[0015] S1: Feeding plastic. First, pour the plastic to be processed into the feed hopper. The plastic enters the conveying cylinder through the feed hopper.

[0016] S2: Transporting plastic, the output shaft drives the spiral blades on the conveying rotating column to rotate, so that the raw material inside the conveying cylinder is transported to the discharge pipe;

[0017] S3: Heating and dehumidification. Heat is generated by the friction between the friction block and the linkage rod, and then transported to the plastic surface through the small hole on the stirring rod.

[0018] S4: Plastic dust removal. The sliding guard plate agitates the plastic, and the gas inside the agitator pumps the dust on the plastic surface through the vent to the dust collection box.

[0019] The present invention has the following beneficial effects:

[0020] (1) In this invention, the push rod pushes the friction base to slide along the fixed square rod. When the friction base contacts the friction ring, since the friction ring is slidably connected to the inner wall of the conveying rotating column, the friction ring will rotate when the conveying rotating column rotates. When the friction block on the friction base contacts the friction ring, the friction block and the friction ring will produce a friction effect. The friction between the friction block and the linkage rod will generate heat. At this time, the friction ring slidably connected to the inner wall of the conveying rotating column will conduct the generated heat to the outer wall of the conveying rotating column through heat conduction. At this time, the moisture on the plastic surface in contact with the conveying rotating column will evaporate. This setting is beneficial to evaporate the moisture in the plastic through heat on the one hand, and avoids the moisture inside the plastic from affecting the quality of plastic processing on the other hand, thereby improving the quality of plastic products.

[0021] (2) In this invention, when the friction block on the friction base comes into contact with the friction ring, the friction block and the friction ring will produce a friction effect. The friction block and the friction ring will produce a squeezing effect at the slope. When the friction block is squeezed, it will drive the linkage rod to push the slider in the pressing groove. At this time, the slider will squeeze the compression spring inward along the pressing groove. With this setting, when the compression spring is subjected to a greater squeezing force, the slider will be subjected to a greater elastic force of the compression spring, and the linkage rod will exert a greater force on the friction block. At this time, the pressure between the outer wall of the friction block and the inner wall of the friction ring will be greater, and the friction between the friction block and the friction ring will increase. This will help to increase the heat generated by the friction between the two, thereby accelerating the heat conduction between the friction ring and the conveying rotating column, thereby increasing the rate of evaporation of moisture inside the plastic.

[0022] (3) In this invention, when the output shaft rotates and drives the conveying rotating column inside the conveying cylinder to rotate, the conveying rotating column drives the pushing block in the internal bidirectional threaded groove to slide along the fixed square rod. The pushing block will squeeze the air in the heating chamber, so that the air in the heating chamber is discharged through the one-way air outlet valve. The air in the heating chamber carries away the heat on the friction ring through the air passage. On the one hand, the carried-away hot air is discharged into the interior of the plastic through the air outlet on the stirring rod, which greatly accelerates the evaporation of moisture inside the plastic. On the other hand, it can carry away the heat generated by the friction between the friction ring and the friction block in time, avoiding the friction ring from being too hot for a long time, thereby avoiding damage to the friction ring.

[0023] (4) In this invention, when the push rod pushes the friction base to slide along the fixed square rod, the friction base slides to contact the friction ring and drives the friction ring to slide along the friction groove. The sliding of the friction groove drives the sliding guard plate on the connecting block to slide. The sliding guard plate drives the stirring rod to slide. The sliding of the stirring rod will stir the plastic, so that the plastic will produce a stirring effect, thereby accelerating the air flow between the plastics. By setting a dust removal mechanism, the hot air between the plastics will discharge the dust adhering to the surface of the plastic through the vent. The dust in the hot air is filtered down by the filter plate and falls into the dust collection box. The water vapor in the hot air is discharged to the outside of the conveying cylinder through the filter plate.

[0024] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention;

[0028] Figure 3 This is a partial structural diagram of the dust removal mechanism of the present invention;

[0029] Figure 4 This is a partial cross-sectional view of the driving mechanism of the present invention;

[0030] Figure 5 This is a partial cross-sectional view of the rotating conveyor column of the present invention;

[0031] Figure 6 This is a partial cross-sectional view of the driving mechanism of the present invention;

[0032] Figure 7 For the present invention Figure 6 Enlarged view of A in the middle;

[0033] Figure 8 This is a partial structural diagram of the extrusion friction mechanism of the present invention;

[0034] Figure 9 For the present invention Figure 8 Enlarged view of B in the middle;

[0035] Figure 10 This is a partial structural diagram of the conveying mechanism of the present invention;

[0036] Figure 11 This is a partial structural diagram of the heat dissipation mechanism of the present invention;

[0037] Figure 12 This is a flowchart of the method of the present invention;

[0038] The attached diagram lists the components represented by each number as follows:

[0039] In the diagram: 1. Feed hopper; 11. Support leg; 12. Conveying cylinder; 13. Drive motor; 14. Output shaft; 15. Equipment casing; 16. Discharge pipe; 2. Conveying mechanism; 201. Conveying rotating column; 202. Spiral blade; 3. Pushing mechanism; 301. Heating chamber; 302. Fixed shaft; 303. Fixed square rod; 304. Bidirectional threaded groove; 305. Limiting block; 306. Pushing block; 307. Pushing rod; 308. Air inlet; 4. Extrusion friction mechanism; 401. Friction base; 402. Pressing groove; 403. Extrusion... 404. Compression spring; 405. Slider; 406. Linkage rod; 407. Friction block; 408. Friction groove; 409. Sealing and fixing block; 410. One-way air inlet valve; 411. Reset rod; 5. Heat dissipation mechanism; 501. Connecting block; 502. Heat dissipation groove; 503. Sliding guard plate; 504. Stirring rod; 505. Air outlet; 506. One-way air outlet valve; 507. Ventilation channel; 508. Sealing rod; 509. Compression spring; 6. Dust removal mechanism; 601. Air outlet; 602. Filter plate; 603. Dust collection box. Detailed Implementation

[0040] 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.

[0041] Example 1, please refer to Figure 1 - Figure 9 As shown, this invention relates to an automatic spiral feeder and method for PET plastic processing, comprising a feeding hopper 1, several support legs 11 fixedly connected to the lower part of the feeding hopper 1, a conveying cylinder 12 fixedly connected to the lower part of the feeding hopper 1, a drive motor 13 fixedly connected to the side of the conveying cylinder 12 near the feeding hopper 1, an output shaft 14 fixedly connected to the output end of the drive motor 13, a device housing 15 fixedly connected to the outer wall of the conveying cylinder 12, and a discharge pipe 16 fixedly connected to the end of the conveying cylinder 12 away from the feeding hopper 1. It also includes:

[0042] The conveying mechanism 2 includes a conveying rotating column 201 fixedly connected to the end of the output rotating shaft 14 away from the drive motor 13. The side wall of the conveying rotating column 201 is fixedly connected with a spiral blade 202. The conveying rotating column 201 is located at the central axis of the conveying cylinder 12. The function of this component is that when using the PET plastic processing spiral automatic feeder, the plastic to be processed is first poured into the feed hopper 1. The plastic enters the conveying cylinder 12 through the feed hopper 1. At this time, the drive motor 13 is started. The output end of the drive motor 13 drives the output rotating shaft 14 to rotate. The rotation of the output rotating shaft 14 drives the conveying rotating column 201 inside the conveying cylinder 12 to rotate. The rotation of the conveying rotating column 201 drives the spiral blade 202 to rotate. The spiral blade 202, in conjunction with the conveying cylinder 12, transports the plastic at the bottom of the feed hopper 1 to the discharge pipe 16, so that the conveyor completes the basic transportation function.

[0043] The conveying rotating column 201 is internally equipped with a pushing mechanism 3, which includes a heating chamber 301 inside the conveying rotating column 201. A fixed shaft 302 is fixedly connected to the inner wall of the end of the conveying cylinder 12 near the discharge pipe 16. A fixed square rod 303 is fixedly connected to the end of the fixed shaft 302 away from the conveying cylinder 12. The conveying rotating column 201 has several bidirectional threaded grooves 304. A limit block 305 is fixedly connected to the end of the fixed square rod 303 away from the fixed shaft 302. Several pushing blocks 306 are slidably connected to the fixed square rod 303. The pushing blocks 306 are connected to the conveying rotating column 201 via bidirectional threads. The groove 304 is rotatably connected, and several push rods 307 are fixedly connected to the side of the push block 306 away from the limit block 305. An air inlet 308 is provided at the central axis of the fixed shaft 302, and the air inlet 308 is connected to the heating chamber 301. The function of this component is to set up a push mechanism 3 so that when the output rotating shaft 14 rotates and drives the conveying rotating column 201 inside the conveying cylinder 12 to rotate, the conveying rotating column 201 drives the push block 306 in the internal bidirectional threaded groove 304 to slide along the fixed square rod 303. The push block 306 sliding along the fixed square rod 303 drives the push rod 307 to slide along the fixed square rod 303.

[0044] Example 2 differs from Example 1 in that: Figure 1 - Figure 12 As shown, the conveying rotating column 201 is equipped with a compression friction mechanism 4. The compression friction mechanism 4 includes several friction bases 401 that are slidably connected to a fixed square rod 303. Several pressing grooves 402 are provided on the friction bases 401. Several compression springs 403 are fixedly installed in the pressing grooves 402. A slider 404 is slidably connected inside the pressing grooves 402. A linkage rod 405 is rotatably connected to the slider 404. A friction block 406 is rotatably connected to the end of the linkage rod 405 away from the slider 404. The friction block 406 is slidably connected to the friction base 401 through the pressing grooves 402.

[0045] The extrusion friction mechanism 4 also includes several friction grooves 407 formed on the side wall of the conveying rotating column 201. Friction rings 408 are slidably connected in the friction grooves 407 on the side wall of the conveying rotating column 201. Several sealing blocks 409 are fixedly connected to the fixed square rod 303. One-way air inlet valves 410 are fixedly connected to the sealing blocks 409. A reset rod 411 is fixedly connected to one end of the push block 306. The reset rod 411 slides through the sealing blocks 409. The function of this component is to push the friction base 401 to slide along the fixed square rod 303 when friction occurs. When the base 401 contacts the friction ring 408, since the friction ring 408 is slidably connected to the inner wall of the conveying rotating column 201, the rotation of the conveying rotating column 201 will drive the friction ring 408 to rotate. When the friction block 406 on the friction base 401 contacts the friction ring 408, friction will occur between the friction block 406 and the friction ring 408. The friction between the friction block 406 and the linkage rod 405 will generate heat. At this time, the friction ring 408, which is slidably connected to the inner wall of the conveying rotating column 201, will conduct the generated heat to the outer wall of the conveying rotating column 201 through heat conduction. The moisture on the plastic surface of column 201 evaporates. This design facilitates the evaporation of moisture from the plastic through heat and prevents internal moisture from affecting the quality of plastic processing, thereby improving the quality of the plastic product. When the friction block 406 on the friction base 401 contacts the friction ring 408, friction occurs between the friction block 406 and the friction ring 408. This creates a squeezing effect at the slope of the friction block 406 and the friction ring 408. The squeezing of the friction block 406 drives the linkage rod 405 to push the slider 404 in the pressing groove 402. The slider 404 presses the compression spring 403 inward along the pressing groove 402. This arrangement means that the greater the compression force on the compression spring 403, the greater the elastic force on the slider 404, and the greater the force exerted by the linkage rod 405 on the friction block 406. At this time, the pressure between the outer wall of the friction block 406 and the inner wall of the friction ring 408 is greater, and the friction between the friction block 406 and the friction ring 408 increases. This helps to increase the heat generated by the friction between the two, thereby accelerating the heat conduction between the friction ring 408 and the conveying rotating column 201, and thus increasing the rate of evaporation of moisture inside the plastic.

[0046] The inside of the conveying cylinder 12 is provided with a heat dissipation mechanism 5. The heat dissipation mechanism 5 includes a connecting block 501 fixedly connected to the top of the friction ring 408. Several heat dissipation grooves 502 are opened on the side wall of the conveying rotating column 201. A sliding guard plate 503 is fixedly connected to the end of the connecting block 501 away from the friction ring 408. An agitator 504 is fixedly connected to the side of the sliding guard plate 503 away from the conveying rotating column 201. Several air outlets 505 are opened on the agitator 504.

[0047] The heat dissipation mechanism 5 also includes a one-way vent valve 506 fixedly connected to one end of the friction ring 408. A vent 507 is provided inside the friction ring 408. The heating chamber 301 and the stirring rod 504 are connected through the vent 507. Several sealing rods 508 are slidably connected inside the heat dissipation groove 502. A pressure spring 509 is installed inside the heat dissipation groove 502. The sealing rods 508 and the pressure spring 509 are pressed together. The function of this component is that when the output shaft 14 rotates, driving the conveying rotating column 201 inside the conveying cylinder 12 to rotate, the conveying rotating column 201 drives the pushing block 30 in the internal bidirectional threaded groove 304. 6. Sliding along the fixed square rod 303, the pushing block 306 will squeeze the air in the heating chamber 301, causing the air in the heating chamber 301 to be discharged through the one-way air outlet valve 506. The air in the heating chamber 301 will carry away the heat on the friction ring 408 through the vent 507. On the one hand, the carried-away hot air is discharged into the interior of the plastic through the air outlet 505 on the stirring rod 504, which greatly accelerates the evaporation of moisture inside the plastic. On the other hand, it can promptly remove the heat generated by the friction between the friction ring 408 and the friction block 406, avoiding the friction ring 408 from overheating due to prolonged friction, thereby preventing damage to the friction ring 408.

[0048] The equipment housing 15 is equipped with a dust removal mechanism 6, which includes several vent holes 601 on the conveying cylinder 12. A filter plate 602 is fixedly connected to one end of the equipment housing 15 near the feed hopper 1, and a dust collection box 603 is fixedly connected to the side wall of the equipment housing 15 near the feed hopper 1. The function of this component is that when the push rod 307 pushes the friction base 401 to slide along the fixed square rod 303, the friction base 401 slides in contact with the friction ring 408 and drives the friction ring 408 to slide along the friction groove 407. 07 The sliding action drives the sliding guard plate 503 on the connecting block 501 to slide. The sliding guard plate 503 drives the stirring rod 504 to slide. The sliding of the stirring rod 504 will agitate the plastic, thus accelerating the airflow between the plastics. By setting the dust removal mechanism 6, the hot air between the plastics will discharge the dust adhering to the surface of the plastics through the vent 601. The dust in the hot air is filtered down by the filter plate 602 and falls into the dust collection box 603. The water vapor in the hot air is discharged to the outside of the conveying cylinder 12 through the filter plate 602.

[0049] It includes the following steps:

[0050] S1: Feeding plastic. First, pour the plastic to be processed into the feed hopper 1. The plastic enters the conveying cylinder 12 through the feed hopper 1.

[0051] S2: Transporting plastic, the output shaft 14 drives the spiral blades 202 on the conveying rotating column 201 to rotate, so that the raw material inside the conveying cylinder 12 is transported to the discharge pipe 16;

[0052] S3: Heating and dehumidification. Heat is generated by the friction between the friction block 406 and the linkage rod 405, and then transported to the plastic surface through the small hole on the stirring rod 504.

[0053] S4: Plastic dust removal. The sliding guard plate 503 drives the plastic to stir. The gas in the stirring rod 504 transports the dust on the surface of the plastic to the dust collection box 603 through the vent 601.

[0054] One specific application of this embodiment is:

[0055] When using this PET plastic processing spiral automatic feeder, the plastic to be processed is first poured into the feed hopper 1. The plastic enters the conveying cylinder 12 through the feed hopper 1. At this time, the drive motor 13 is started. The output end of the drive motor 13 drives the output shaft 14 to rotate. The rotation of the output shaft 14 drives the conveying rotating column 201 inside the conveying cylinder 12 to rotate. The rotation of the conveying rotating column 201 drives the spiral blades 202 to rotate. The spiral blades 202, in conjunction with the conveying cylinder 12, transport the plastic at the bottom of the feed hopper 1 to the discharge pipe 16, thus enabling the conveyor to complete its basic transportation function. By setting up the push mechanism 3, when the output shaft 14 rotates and drives the conveying rotating column 201 inside the conveying cylinder 12 to rotate, The conveying rotating column 201 drives the pushing block 306 inside the internal bidirectional threaded groove 304 to slide along the fixed square rod 303. The sliding of the pushing block 306 along the fixed square rod 303 drives the pushing rod 307 to slide along the fixed square rod 303. The pushing rod 307 pushes the friction base 401 to slide along the fixed square rod 303. When the friction base 401 contacts the friction ring 408, since the friction ring 408 is slidably connected to the inner wall of the conveying rotating column 201, the rotation of the conveying rotating column 201 will drive the friction ring 408 to rotate. When the friction block 406 on the friction base 401 contacts the friction ring 408, a friction effect is generated between the friction block 406 and the friction ring 408. Heat is generated by friction with the linkage rod 405. The friction ring 408, slidably connected to the inner wall of the conveying rotating column 201, conducts this heat to the outer wall of the conveying rotating column 201. This causes moisture on the plastic surface in contact with the conveying rotating column 201 to evaporate. This design facilitates the evaporation of moisture from the plastic through heat and prevents internal moisture from affecting the quality of plastic processing, thus improving the quality of the plastic product. When the friction block 406 on the friction base 401 contacts the friction ring 408, a frictional effect occurs between the friction block 406 and the friction ring 408, creating a squeezing effect at the slope of the friction block 406 and the friction ring 408 on the friction base 401. When the friction block 406 is squeezed, it will drive the linkage rod 405 to push the slider 404 in the pressing groove 402. At this time, the slider 404 squeezes the compression spring 403 inward along the pressing groove 402. With this setting, the greater the squeezing force on the compression spring 403, the greater the elastic force of the compression spring 403 on the slider 404. Then the force of the linkage rod 405 on the friction block 406 is greater. At this time, the pressure between the outer wall of the friction block 406 and the inner wall of the friction ring 408 is greater. The friction between the friction block 406 and the friction ring 408 increases, which helps to increase the heat generated by the friction between the two, thereby accelerating the heat conduction between the friction ring 408 and the conveying rotating column 201, thereby increasing the rate of evaporation of moisture inside the plastic.

[0056] When the output shaft 14 rotates, driving the conveying rotating column 201 inside the conveying cylinder 12 to rotate, the conveying rotating column 201 drives the pushing block 306 in the internal bidirectional threaded groove 304 to slide along the fixed square rod 303. The pushing block 306 will squeeze the air in the heating chamber 301, causing the air in the heating chamber 301 to be discharged through the one-way air outlet valve 506. The air in the heating chamber 301 carries away the heat on the friction ring 408 through the vent 507. On the one hand, the carried-away hot air is discharged into the interior of the plastic through the air outlet 505 on the stirring rod 504, greatly accelerating the evaporation of moisture inside the plastic. On the other hand, it can promptly remove the heat generated by the friction between the friction ring 408 and the friction block 406, preventing the friction ring 408 from overheating due to prolonged friction, thereby preventing damage to the friction ring 408. When the pushing block 306 slides to the right, the pushing block 306 will draw air through the small hole at the leftmost end of the conveying rotating column 201. When the pushing block 306 moves to the right, the pushing block 306 will draw air through the inlet... Air duct 308 draws air into heating chamber 301. The air then re-enters the heating chamber 301 between push block 306 and one-way air inlet valve 410 through one-way inlet valve 410, thus ensuring the normal operation of the device. When push rod 307 pushes friction base 401 to slide along fixed square rod 303, friction base 401 slides to contact friction ring 408 and drives friction ring 408 to slide along friction groove 407. The sliding of friction groove 407 drives sliding guard plate 503 on connecting block 501 to slide. The sliding of sliding guard plate 503 drives stirring rod 504 to slide. The sliding of stirring rod 504 will agitate plastic, causing the plastic to agitate, thereby accelerating the air flow between plastics. By setting dust removal mechanism 6, the hot air between plastics will discharge dust adhering to the plastic surface through vent 601. The dust in the hot air is filtered down by filter plate 602 and falls into dust collection box 603. Water vapor in the hot air is discharged to the outside of conveying cylinder 12 through filter plate 602.

[0057] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic spiral feeder for PET plastic processing, comprising a feeding hopper (1), wherein a plurality of support legs (11) are fixedly connected to the lower part of the feeding hopper (1), a conveying cylinder (12) is fixedly connected to the lower part of the feeding hopper (1), a drive motor (13) is fixedly connected to the side of the conveying cylinder (12) near the feeding hopper (1), an output shaft (14) is fixedly connected to the output end of the drive motor (13), a device housing (15) is fixedly connected to the outer wall of the conveying cylinder (12), and a discharge pipe (16) is fixedly connected to the end of the conveying cylinder (12) away from the feeding hopper (1), characterized in that, Also includes: The conveying mechanism (2) includes a conveying rotating column (201) fixedly connected to the end of the output rotating shaft (14) away from the drive motor (13). The side wall of the conveying rotating column (201) is fixedly connected with a spiral blade (202). The conveying rotating column (201) is located at the central axis of the conveying cylinder (12).

2. The automatic spiral feeder for PET plastic processing according to claim 1, characterized in that: The conveying rotating column (201) is internally equipped with a pushing mechanism (3), which includes a heating chamber (301) inside the conveying rotating column (201). A fixed shaft (302) is fixedly connected to the inner wall of the end of the conveying cylinder (12) near the discharge pipe (16), and a fixed square rod (303) is fixedly connected to the end of the fixed shaft (302) away from the conveying cylinder (12). The conveying rotating column (201) is provided with several bidirectional threaded grooves (304), and the fixed square rod (303) is fixedly connected to the end of the fixed shaft (302) away from the conveying cylinder (12). A limiting block (305) is fixedly connected to one end of the fixed shaft (302). Several pushing blocks (306) are slidably connected to the fixed square rod (303). The pushing blocks (306) are rotatably connected to the conveying rotating column (201) through a bidirectional threaded groove (304). Several pushing rods (307) are fixedly connected to the side of the pushing block (306) away from the limiting block (305). An air inlet (308) is provided at the central axis of the fixed shaft (302). The air inlet (308) is connected to the heating chamber (301).

3. The automatic spiral feeder for PET plastic processing according to claim 2, characterized in that: The conveying rotating column (201) is provided with a compression friction mechanism (4). The compression friction mechanism (4) includes several friction bases (401) slidably connected to a fixed square rod (303). Several pressing grooves (402) are provided on the friction bases (401). Several compression springs (403) are fixedly provided in the pressing grooves (402). A slider (404) is slidably connected inside the pressing grooves (402). A linkage rod (405) is rotatably connected to the slider (404). A friction block (406) is rotatably connected to the end of the linkage rod (405) away from the slider (404). The friction block (406) is slidably connected to the friction base (401) through the pressing grooves (402).

4. The automatic spiral feeder for PET plastic processing according to claim 3, characterized in that: The extrusion friction mechanism (4) further includes several friction grooves (407) formed on the side wall of the conveying rotating column (201). A friction ring (408) is slidably connected in the friction grooves (407) on the side wall of the conveying rotating column (201). Several sealing blocks (409) are fixedly connected on the fixed square rod (303). A one-way air inlet valve (410) is fixedly connected on the sealing blocks (409). A reset rod (411) is fixedly connected to one end of the push block (306). The reset rod (411) slides through the sealing blocks (409).

5. The automatic spiral feeder for PET plastic processing according to claim 4, characterized in that: The feed cylinder (12) is equipped with a heat dissipation mechanism (5). The heat dissipation mechanism (5) includes a connecting block (501) fixedly connected to the top of the friction ring (408). Several heat dissipation grooves (502) are opened on the side wall of the conveying rotating column (201). A sliding guard plate (503) is fixedly connected to the end of the connecting block (501) away from the friction ring (408). A stirring rod (504) is fixedly connected to the side of the sliding guard plate (503) away from the conveying rotating column (201). Several air outlets (505) are opened on the stirring rod (504).

6. The automatic spiral feeder for PET plastic processing according to claim 5, characterized in that: The heat dissipation mechanism (5) also includes a one-way vent valve (506) fixedly connected to one end of the friction ring (408). The friction ring (408) has an internal ventilation channel (507). The heating chamber (301) and the stirring rod (504) are connected through the ventilation channel (507). Several sealing rods (508) are slidably connected inside the heat dissipation groove (502). A pressure spring (509) is provided inside the heat dissipation groove (502). The sealing rods (508) are pressed against the pressure spring (509).

7. The automatic spiral feeder for PET plastic processing according to claim 6, characterized in that: The equipment housing (15) is equipped with a dust removal mechanism (6), which includes several ventilation holes (601) on the conveying cylinder (12). A filter plate (602) is fixedly connected to one end of the equipment housing (15) near the feed hopper (1), and a dust collection box (603) is fixedly connected to the side wall of one end of the equipment housing (15) near the feed hopper (1).

8. The processing method of a spiral automatic feeder for PET plastic processing according to claim 7, characterized in that, It includes the following steps: S1: Feeding plastic. First, pour the plastic to be processed into the feed hopper (1). The plastic enters the conveying cylinder (12) through the feed hopper (1). S2: Transporting plastic, the output shaft (14) drives the spiral blades (202) on the conveying rotating column (201) to rotate, so that the raw material inside the conveying cylinder (12) is transported to the discharge pipe (16); S3: Heating and dehumidification. Heat is generated by the friction between the friction block (406) and the linkage rod (405), and then transported to the plastic surface through the small hole on the stirring rod (504). S4: Plastic dust removal. The sliding guard plate (503) drives the plastic to stir. The gas in the stirring rod (504) transports the dust on the surface of the plastic to the dust collection box (603) through the vent (601).

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