Plastic extrusion molding apparatus and molding process thereof

Abstract

The application relates to the technical field of plastic extrusion molding, in particular to a plastic extrusion molding equipment and a molding process thereof. The equipment comprises a rack and an extruder fixedly installed on the rack. An active seat is arranged above the rack. A first hydraulic telescopic rod is fixedly connected to the rack, and the telescopic end of the first hydraulic telescopic rod is fixedly connected with the active seat. A sealing pipe is fixedly connected to one side of the active seat facing the extruder. An extrusion cutting mechanism matched with an extrusion head on the extruder is arranged on the sealing pipe, and a plurality of extrusion holes are arranged on the extrusion head. A first water inlet pipe and a first water outlet pipe are fixedly connected to the sealing pipe respectively. A water supply structure for supplying water into the first water inlet pipe is arranged on the rack. The plastic strip is cut into plastic particles, and then the plastic particles are cooled. The surface area of the cut plastic particles is larger than that of the whole plastic strip, so that the plastic particles can be cooled more quickly and uniformly, the internal stress is reduced, and deformation or cracking is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic extrusion molding, in particular to a plastic extrusion molding equipment and a molding process thereof. BACKGROUND

[0002] Polyurethane materials are widely used in the fields of automobile, building, household appliance, textile, shoe material, leather and the like due to their high elasticity, high wear resistance, good low-temperature resistance and solvent resistance, and wide adjustable performance range. Polyurethane products are various in types and increasing in output, and a large amount of waste is also generated. These waste can be used as raw materials for preparing plastic particles. Existing processes have already used polyurethane waste to add PVC materials to manufacture plastic particles, and the plastic strips extruded by the extruder are generally cooled by a water tank.

[0003] However, it is worth thinking that the surface area of the whole plastic strip is small, the surface of the plastic strip is quickly cooled by contacting cold water, but the internal heat transfer is slow, which leads to a difference in shrinkage rate between the inside and the outside, and is easy to produce internal stress, which may be deformed or cracked during subsequent processing (such as injection molding), and the heat dissipation efficiency is low.

[0004] Therefore, in order to solve the above problems, a more suitable facility for use is needed. SUMMARY

[0005] Therefore, the present application aims to provide a plastic extrusion molding equipment and a molding process thereof to solve the problems of small surface area of the whole plastic strip and low heat dissipation efficiency.

[0006] In order to achieve the above purpose, the present application provides a plastic extrusion molding equipment, which comprises a rack and an extruder fixedly installed on the rack, a movable seat is arranged above the rack, a first hydraulic telescopic rod is fixedly connected to the rack, and the telescopic end of the first hydraulic telescopic rod is fixedly connected to the movable seat, a sealing pipe is fixedly connected to one side of the movable seat facing the extruder, an extrusion cutting mechanism adapted to an extrusion head of the extruder is arranged on the sealing pipe, and a plurality of extrusion holes are formed in the extrusion head.

[0007] A first water inlet pipe and a first water outlet pipe are fixedly connected to the sealing pipe, respectively, a water supply structure for supplying water into the first water inlet pipe is arranged on the rack, a filter box and a drying box are fixedly connected to the rack, respectively, a cooling pipe is fixedly connected to the rack, one end of the cooling pipe is slidably installed in the first water outlet pipe, the other end of the cooling pipe is fixedly connected to the top of the filter box, a filtering mechanism for filtering plastic particles is installed on the filter box, and a turnover drying structure for drying plastic particles is installed on the drying box.

[0008] Optionally, the extrusion cutting mechanism comprises a plurality of cutting knives arranged in the sealing tube, a first rotating shaft penetrating through the movable seat and being rotatably connected, a first servo motor fixedly connected to the movable seat, one end of the first rotating shaft fixedly connected to the output end of the first servo motor, and the other end of the first rotating shaft fixedly connected to the plurality of cutting knives arranged in the sealing tube.

[0009] Optionally, at least one guide column penetrates through the movable seat and is fixedly connected to the rack at both ends.

[0010] Optionally, the water supply structure comprises a water tank and a first water pump fixedly installed on the rack, a second water outlet pipe fixedly connected to the bottom end of the water tank, the input end of the first water pump fixedly connected to the second water outlet pipe, a second water inlet pipe fixedly connected to the output end of the first water pump, the second water inlet pipe slidably installed in the first water inlet pipe at the end away from the first water pump, a plurality of cooling pipes fixedly connected in the water tank, and the liquid inlet end and the liquid outlet end of the cooling pipes respectively extending to the outside of the water tank.

[0011] Optionally, the filtering mechanism comprises a second rotating shaft rotatably installed in the filtering box, a second servo motor fixedly connected to the bottom of the filtering box, the output end of the second servo motor fixedly connected to the bottom end of the second rotating shaft, a first filter screen sleeved on the second rotating shaft, the outer wall of the first filter screen fixedly connected to the inner wall of the filtering box, a plurality of paddles fixedly connected to the second rotating shaft and respectively in contact with the top of the first filter screen and the inner wall of the filtering box, a second water pump fixedly connected to the top of the rack, a drain pipe fixedly connected to the bottom end of the filtering box, a valve arranged on the drain pipe, the input end of the second water pump fixedly connected to the drain pipe, a return pipe fixedly connected to the output end of the second water pump, the end of the return pipe away from the second water pump fixedly connected to the top end of the water tank, a collection iron shell arranged in the filtering box, the collection iron shell being a cavity structure with open top and bottom ends, an avoiding groove arranged on the first filter screen and matched with the collection iron shell, a first iron plate fixedly connected in the collection iron shell, the two sides of the first iron plate connected with the inner wall of the collection iron shell through a second filter screen, the filtering box and the drying box connected through a connecting pipe, a second hydraulic telescopic rod fixedly connected to the filtering box, a first waterproof electromagnet fixedly connected to the first iron plate at the telescopic end of the second hydraulic telescopic rod, and a transfer unit arranged in the drying box and used to drive the collection iron shell to move from the filtering box to the drying box.

[0012] Optionally, the transfer unit comprises a translation seat arranged in the drying box, a third rotating shaft penetrating through the translation seat and being rotatably connected, a second waterproof electromagnet fixedly connected to the third rotating shaft and matched with the collection iron shell, a third hydraulic telescopic rod fixedly connected to the drying box, the output end of the third hydraulic telescopic rod fixedly connected to the translation seat, and a rotator installed on the drying box and used to control the rotation of the third rotating shaft relative to the translation seat.

[0013] Optionally, the rotator includes a first friction disc fixedly installed on the end of the third rotating shaft away from the second waterproof electromagnet, a third servo motor fixedly connected to the drying box, and the output end of the third servo motor fixedly connected to the second friction disc located inside the drying box, with the second friction disc in contact with the first friction disc, a magnet fixedly connected to the third rotating shaft, and two second iron plates adapted to the magnet fixedly connected to the translation seat.

[0014] Optionally, the tilting drying structure includes a gas collecting shell disposed inside the drying chamber, a lifting seat rotatably sleeved on the outside of the gas collecting shell, a fourth hydraulic telescopic rod fixedly connected to the drying chamber, and the telescopic end of the fourth hydraulic telescopic rod fixedly connected to the lifting seat, a discharge pipe and a liquid discharge pipe fixedly connected to the bottom of the drying chamber respectively, with the liquid discharge pipe located below the discharge pipe and equipped with a valve, a guide component adapted to the discharge pipe on the drying chamber, at least one air inlet pipe fixedly connected to the top of the drying chamber, and the bottom end of the air inlet pipe connected to the air inlet of the gas collecting shell via a flexible hose, a movable column penetrating through the gas collecting shell, several scrapers fixedly connected to the bottom end of the movable column, several air outlet holes adapted to the scrapers being opened at the bottom of the inner wall of the gas collecting shell, and the width between the inner walls on both sides of the air outlet holes being greater than the thickness of the scrapers, a reset component adapted to the movable column being installed on the gas collecting shell, and a driver for driving the movable column to rotate being installed on the drying chamber.

[0015] Optionally, the reset component includes a fixed sleeve fitted outside the movable column, the bottom end of the fixed sleeve being fixedly connected to the top of the gas collecting shell, a first guide groove being provided on the inner wall of the fixed sleeve, a first guide block being slidably provided in the first guide groove, the first guide block being fixedly connected to the movable column, and the bottom of the first guide block being connected to the bottom of the inner wall of the first guide groove by a number of springs.

[0016] Optionally, the driver includes a fixed shell fixedly installed on the top of the drying chamber, the top of the movable column passing through the fixed shell, a rotating sleeve sleeved on the outside of the movable column, and the rotating sleeve rotatably connected to the top of the drying chamber. A second guide groove is provided on the movable column, a second guide block is slidably provided in the second guide groove, and the second guide block is fixedly connected to the rotating sleeve. A first bevel gear located inside the fixed shell is fixedly sleeved on the outside of the rotating sleeve. A fourth servo motor is fixedly connected to the fixed shell, and a second bevel gear meshing with the first bevel gear is fixedly connected to the output end of the fourth servo motor.

[0017] Optionally, the material guide includes a fifth servo motor fixedly installed on the outer wall of the drying chamber, and a material guide plate adapted to the discharge pipe is provided inside the drying chamber, with the output end of the fifth servo motor and the material guide plate fixedly connected.

[0018] The present invention also provides a plastic extrusion molding process, applied to the plastic extrusion molding equipment as described above, comprising the following steps:

[0019] Step 1: Drive the movable seat and sealing tube to move via the first hydraulic telescopic rod so that the sealing tube abuts against the extrusion head on the extruder;

[0020] Step 2: Water is supplied to the first inlet pipe through the water supply structure. The water enters the sealed pipe through the first inlet pipe. The water in the sealed pipe enters the cooling pipe through the first outlet pipe. At the same time, the extruder extrudes plastic strips through the extrusion hole on the extrusion head, and the extrusion cutting mechanism cuts the extruded plastic strips.

[0021] Step 3: The cut plastic granules are carried by the water flow into the first water outlet pipe and the cooling pipe. As the plastic granules move with the water, the water cools them down.

[0022] Step 4: The cooled water and plastic particles enter the filter box through the cooling pipe, are filtered by the filtration mechanism, and then the filtered plastic particles are dried by the flip-type drying structure.

[0023] The beneficial effects of this invention are as follows: The movable seat and sealing tube are moved by the first hydraulic telescopic rod so that the sealing tube abuts against the extrusion head on the extruder. Water is supplied to the first water inlet pipe through the water supply structure. The water enters the sealing tube through the first water inlet pipe and enters the cooling tube through the first water outlet pipe. At the same time, the extruder extrudes a plastic strip through the extrusion hole on the extrusion head, and the extrusion cutting mechanism cuts the extruded plastic strip. The cut plastic particles are carried by the water flow into the first water outlet pipe and the cooling tube. As the plastic particles move with the water, the water cools the plastic particles. The cooled water and plastic particles enter the filter box through the cooling tube and are filtered by the filter mechanism. Then, the filtered plastic particles are dried by the flip-type drying structure. The plastic strip is cut into plastic particles and then cooled. The surface area of ​​the cut plastic particles is larger than that of the whole plastic strip, which makes heat dissipation faster and cooling more uniform, reduces internal stress, and avoids deformation or cracking. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is one of the overall structural schematic diagrams of an embodiment of the present invention;

[0026] Figure 2 This is a second schematic diagram of the overall structure of an embodiment of the present invention;

[0027] Figure 3This is a schematic diagram of the structure of the movable seat in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the internal structure of the filter box in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the first filter screen, the collecting iron shell, and the first waterproof electromagnet in a separated state according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the cooling pipe structure according to an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the internal structure of the fixed shell according to an embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of the internal structure of the gas collecting shell and the fixing sleeve in an embodiment of the present invention;

[0033] Figure 9 This is a schematic diagram of the internal structure of the drying oven according to an embodiment of the present invention;

[0034] Figure 10 This is a schematic diagram of the translation seat according to an embodiment of the present invention.

[0035] The diagram is marked as follows:

[0036] 1. Frame; 2. Extruder; 3. Sealing pipe; 4. First water inlet pipe; 5. First water outlet pipe; 6. Cooling pipe; 7. Filter box; 8. Drying box; 9. First hydraulic telescopic rod; 10. Movable seat; 11. First servo motor; 12. First rotating shaft; 13. Cutting blade; 14. Guide column; 15. Water tank; 16. Second water inlet pipe; 17. First water pump; 18. Second water outlet pipe; 19. Cooling pipe; 20. Second rotating shaft; 21. Second servo motor; 22. First filter screen; 23. Baffle plate; 24. Clearance groove; 25. Collection iron shell; 26. First iron plate; 27. Second filter screen; 28. Second hydraulic telescopic rod; 29. ​​First waterproof electromagnet; 30. Drain pipe; 31. Second water pump; 32. Return pipe; 33. Translation seat; 34. 35. Third hydraulic telescopic rod; 36. Third rotating shaft; 37. Second waterproof electromagnet; 38. Magnet block; 39. Second iron plate; 40. Third servo motor; 41. First friction disc; 42. Second friction disc; 43. Air collection shell; 44. Lifting seat; 45. Fourth hydraulic telescopic rod; 46. Movable column; 47. Scraper; 48. Air outlet; 49. Fixed sleeve; 50. First guide groove; 51. First guide block; 52. Spring; 53. Air inlet pipe; 54. Hose; 55. Fixed shell; 56. Rotating sleeve; 57. First bevel gear; 58. Second guide groove; 59. Second guide block; 60. Fourth servo motor; 61. Second bevel gear; 62. Discharge pipe; 63. Fifth servo motor; 64. Guide plate; 65. Drain pipe; 66. Connecting pipe. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0038] Example 1, by Figure 1 , Figure 2 and Figure 3 The present invention includes a frame 1 and an extruder 2 fixedly mounted on the frame 1. A movable seat 10 is provided above the frame 1. A first hydraulic telescopic rod 9 is fixedly connected to the frame 1, and the telescopic end of the first hydraulic telescopic rod 9 is fixedly connected to the movable seat 10. A sealing tube 3 is fixedly connected to the side of the movable seat 10 facing the extruder 2. The sealing tube 3 is provided with an extrusion cutting mechanism adapted to the extrusion head on the extruder 2, and the extrusion head is provided with a plurality of extrusion holes.

[0039] A first water inlet pipe 4 and a first water outlet pipe 5 are fixedly connected to the sealing pipe 3. A water supply structure for supplying water to the first water inlet pipe 4 is provided on the frame 1. A filter box 7 and a drying box 8 are fixedly connected to the frame 1. A cooling pipe 6 is fixedly connected to the frame 1. One end of the cooling pipe 6 is slidably installed inside the first water outlet pipe 5, and the other end of the cooling pipe 6 is fixedly connected to the top of the filter box 7. A filter mechanism for filtering plastic granules is installed on the filter box 7. A tilting drying structure for drying plastic granules is installed on the drying box 8. The movable seat 10 and the sealing pipe 3 are moved by the first hydraulic telescopic rod 9 so that the sealing pipe 3 abuts against the extrusion head on the extruder 2. Water is supplied to the first water inlet pipe 4 through the water supply structure. Water enters the machine through the first water inlet pipe 4. Inside the sealing tube 3, the water inside the sealing tube 3 enters the cooling tube 6 through the first water outlet tube 5. At the same time, the extruder 2 extrudes a plastic strip through the extrusion hole on the extrusion head, and the extrusion cutting mechanism cuts the extruded plastic strip. The cut plastic particles are carried by the water flow into the first water outlet tube 5 and the cooling tube 6. As the plastic particles move with the water, the water cools the plastic particles. The cooled water and plastic particles enter the filter box 7 through the cooling tube 6 and are filtered by the filtration mechanism. Then, the filtered plastic particles are dried by the flip-type drying structure. The plastic strip is cut into plastic particles and then cooled. The surface area of ​​the cut plastic particles is larger than that of the whole plastic strip, which makes heat dissipation faster, cooling more uniform, reducing internal stress, and avoiding deformation or cracking.

[0040] Example 2, based on Example 1, is... Figure 1 , Figure 2 , Figure 3 and Figure 6 The extrusion cutting mechanism includes several cutting blades 13 disposed within a sealed tube 3. A first rotating shaft 12 rotatably connects to a movable base 10. A first servo motor 11 is fixedly connected to the movable base 10. One end of the first rotating shaft 12 is fixedly connected to the output end of the first servo motor 11, and the other end of the first rotating shaft 12 is fixedly connected to several cutting blades 13 located within the sealed tube 3. At least one guide post 14 passes through the movable base 10, and both ends of the guide post 14 are fixedly connected to the frame 1. Water supply... The structure includes a water tank 15 and a first water pump 17 fixedly installed on the frame 1. A second water outlet pipe 18 is fixedly connected to the bottom end of the water tank 15. The input end of the first water pump 17 is fixedly connected to the second water outlet pipe 18. The output end of the first water pump 17 is fixedly connected to a second water inlet pipe 16. The end of the second water inlet pipe 16 away from the first water pump 17 is slidably installed inside the first water inlet pipe 4. Several cooling pipes 19 are fixedly connected inside the water tank 15. The liquid inlet end and the liquid outlet end of the cooling pipes 19 extend to the outside of the water tank 15, respectively.

[0041] The first hydraulic telescopic rod 9 drives the movable seat 10 to move, so that the sealing tube 3 abuts against the extrusion head on the extruder 2, and the movable seat 10 slides relative to the guide post 14. The design of the guide post 14 increases the stability of the translation of the movable seat 10. The sealing tube 3 drives the first water inlet pipe 4 and the first water outlet pipe 5 to move synchronously. The first water inlet pipe 4 slides relative to the second water inlet pipe 16, and the first water outlet pipe 5 slides relative to the cooling pipe 6. The ends of the first water inlet pipe 4 and the first water outlet pipe 5 can be fixedly connected to rubber sealing sleeves, which can increase the sealing performance at the connection between the first water inlet pipe 4 and the second water inlet pipe 16, and can also increase the stability of the first water inlet pipe 2. The sealing of the connection between the water outlet pipe 5 and the cooling pipe 6 is achieved by the first servo motor 11 driving the first rotating shaft 12 to rotate. The first rotating shaft 12 can cut the extruded plastic strip into granules through the cutting blade 13, and the external coolant circulates into the cooling pipe 19. The cooling pipe 19 cools the water in the water tank 15. The first water pump 17 is started, and the first water pump 17 can pump the water in the water tank 15 into the second water inlet pipe 16 through the second water outlet pipe 18. The water then enters the sealing pipe 3 through the second water inlet pipe 16 and the first water inlet pipe 4. The water can carry the cut plastic granules to the first water outlet pipe 5 and the cooling pipe 6.

[0042] Example 3, based on Example 2, by Figure 2 , Figure 4 , Figure 5 , Figure 9 and Figure 10The filtration mechanism includes a second rotating shaft 20 rotatably mounted inside a filter box 7. A second servo motor 21 is fixedly connected to the bottom of the filter box 7, and the output end of the second servo motor 21 is fixedly connected to the bottom end of the second rotating shaft 20. A first filter screen 22 is sleeved on the outside of the second rotating shaft 20, and the outer wall of the first filter screen 22 is fixedly connected to the inner wall of the filter box 7. Several levers 23 are fixedly connected to the second rotating shaft 20, and the levers 23 respectively contact the top of the first filter screen 22 and the inner wall of the filter box 7. A second water pump 31 is fixedly connected to the top of the frame 1, and a drain pipe 30 is fixedly connected to the bottom end of the filter box 7. The filter box 7 is equipped with a valve. The input end of the second water pump 31 is fixedly connected to the drain pipe 30. The output end of the second water pump 31 is fixedly connected to the return pipe 32, and the end of the return pipe 32 away from the second water pump 31 is fixedly connected to the top of the water tank 15. The filter box 7 is equipped with a collecting iron shell 25, which is a hollow structure with open top and bottom. The first filter screen 22 has a relief groove 24 adapted to the collecting iron shell 25. The first iron plate 26 is fixedly connected inside the collecting iron shell 25, and the two sides of the first iron plate 26 are connected to the inner wall of the collecting iron shell 25 through the second filter screen 27. The filter box 7 and the drying box 8 are connected by a connecting pipe. A second hydraulic telescopic rod 28 is fixedly connected to the filter box 7. The telescopic end of the second hydraulic telescopic rod 28 is fixedly connected to a first waterproof electromagnet 29 that contacts the bottom of the first iron plate 26. The drying box 8 is equipped with a transfer unit for driving the collecting iron shell 25 from the filter box 7 to the drying box 8. The transfer unit includes a translation seat 33 located within the drying box 8. A third rotating shaft 35 is rotatably connected through the translation seat 33. A second waterproof electromagnet 36 adapted to the collecting iron shell 25 is fixedly connected to the third rotating shaft 35. A third hydraulic telescopic rod 34 is fixedly connected to the drying box 8. The output end of 4 is fixedly connected to the translation seat 33. A rotator for controlling the rotation of the third rotating shaft 35 relative to the translation seat 33 is installed on the drying box 8. The rotator includes a first friction disk 40 fixedly installed on the end of the third rotating shaft 35 away from the second waterproof electromagnet 36. A third servo motor 39 is fixedly connected to the drying box 8, and the output end of the third servo motor 39 is fixedly connected to a second friction disk 41 located inside the drying box 8. The second friction disk 41 and the first friction disk 40 are in contact. A magnet block 37 is fixedly connected to the third rotating shaft 35, and two second iron plates 38 adapted to the magnet block 37 are fixedly connected to the translation seat 33.

[0043] Water containing plastic particles mixed in the cooling pipe 6 enters the filter box 7. The plastic particles are filtered by the first filter screen 22 and remain between two adjacent deflector plates 23. When the water level in the filter box 7 reaches a preset position, the valve on the drain pipe 30 opens, activating the second water pump 31. The second water pump 31 works synchronously with the first water pump 17, allowing the filtered water in the filter box 7 to return to the water tank 15 through the drain pipe 30 and return pipe 32. When it is necessary to collect the plastic particles filtered by the first filter screen 22, the second servo motor 21 drives the second rotating shaft 20 and deflector plates 23 to rotate. The two adjacent deflector plates 23 move the plastic particles from above the first filter screen 22 to above the collecting iron shell 25. The second hydraulic telescopic rod 28 drives the first waterproof electromagnet 29 and the collecting iron shell 25 upwards, concentrating the plastic particles in the collecting iron shell 25. The particles then pass through the second filter screen 22 within the collecting iron shell 25. 7. Filter out excess water until the collecting iron shell 25 moves to one side of the connecting pipe 65. At this time, the third hydraulic telescopic rod 34 drives the translation seat 33 to move. The translation seat 33 drives the third rotating shaft 35 and the second waterproof electromagnet 36 to move, so that the second waterproof electromagnet 36 moves to one side of the collecting iron shell 25. At this time, the second waterproof electromagnet 36 is energized, and the second waterproof electromagnet 36 and the collecting iron shell 25 are magnetically attracted to each other. The first waterproof electromagnet 29 is de-energized and is no longer magnetically attracted to the first iron plate 26. The third hydraulic telescopic rod 34 drives the translation seat 33 to move again to the drying box 8 through the connecting pipe 65, and the collecting iron shell 25 moves to the drying box 8 through the connecting pipe 65 until the first friction disc 40 and the second friction disc 41 come into contact. The collecting iron shell 25 containing plastic particles can then be transferred to the drying box 8. Similarly, by reversing the above steps, the collecting iron shell 25 can be moved to the filter box 7 again.

[0044] Example 4, based on Example 3, by Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 9 and Figure 10The rotary drying structure includes a gas collecting shell 42 disposed inside the drying chamber 8, a lifting seat 43 rotatably sleeved on the outside of the gas collecting shell 42, a fourth hydraulic telescopic rod 44 fixedly connected to the drying chamber 8, and the telescopic end of the fourth hydraulic telescopic rod 44 fixedly connected to the lifting seat 43, a discharge pipe 61 and a liquid discharge pipe 64 fixedly connected to the bottom of the drying chamber 8 respectively, and the liquid discharge pipe 64 is located below the discharge pipe 61 and is equipped with a valve, a guide component adapted to the discharge pipe 61 is provided on the drying chamber 8, and at least one air inlet pipe 52 is fixedly connected to the top of the drying chamber 8, and the air inlet pipe 52... The bottom end and the air inlet of the air collecting shell 42 are connected by a hose 53. A movable column 45 passes through the air collecting shell 42. Several scrapers 46 are fixedly connected to the bottom end of the movable column 45. Several air outlets 47 adapted to the scrapers 46 are opened at the bottom of the inner wall of the air collecting shell 42, and the width between the inner walls on both sides of the air outlets 47 is greater than the thickness of the scrapers 46. A reset component adapted to the movable column 45 is installed on the air collecting shell 42. A driver for driving the movable column 45 to rotate is installed on the drying oven 8. The reset component includes a fixed sleeve 48 sleeved on the outside of the movable column 45. The bottom end of the fixed sleeve 48 and the top end of the air collecting shell 42 are connected to the air inlet of the air collecting shell 42. The unit is fixedly connected, and a first guide groove 49 is provided on the inner wall of the fixed sleeve 48. A first guide block 50 is slidably disposed in the first guide groove 49. The first guide block 50 and the movable column 45 are fixedly connected, and the bottom of the first guide block 50 and the bottom of the inner wall of the first guide groove 49 are connected by several springs 51. The drive includes a fixed shell 54 fixedly installed on the top of the drying oven 8. The top of the movable column 45 passes through the fixed shell 54. A rotating sleeve 55 is fitted on the outside of the movable column 45, and the rotating sleeve 55 is rotatably connected to the top of the drying oven 8. A second guide groove 57 is provided on the movable column 45. A second guide block 58 is slidably provided in the groove 57, and the second guide block 58 is fixedly connected to the rotating sleeve 55. A first bevel gear 56 located in the fixed shell 54 is fixedly sleeved on the outside of the rotating sleeve 55. A fourth servo motor 59 is fixedly connected to the fixed shell 54. A second bevel gear 60 meshing with the first bevel gear 56 is fixedly connected to the output end of the fourth servo motor 59. The material guide includes a fifth servo motor 62 fixedly installed on the outer wall of the drying box 8. A material guide plate 63 adapted to the discharge pipe 61 is provided in the drying box 8, and the output end of the fifth servo motor 62 is fixedly connected to the material guide plate 63.

[0045] When the collecting iron shell 25 is transferred into the drying chamber 8, the lifting seat 43 and the air collecting shell 42 are driven to move down by the fourth hydraulic telescopic rod 44. Finally, the lifting seat 43 and the top of the collecting iron shell 25 abut against each other, and the scraper 46 is inserted into the collecting iron shell 25. Heated air is introduced into the air collecting shell 42 through the air inlet pipe 52 and the hose 53 by the external heating device, and the heated air is blown into the collecting iron shell 25 through the air outlet 47. The heated air dries the plastic particles. The fourth servo motor 59 drives the second bevel gear 60 to rotate. The second bevel gear 60 drives the rotating sleeve 55 and the second guide block 58 to rotate through the first bevel gear 56. The second guide block 58 can then drive the scraper 46 to scrape the plastic particles in the collecting iron shell 25 through the movable column 45. The movable column 45 drives the fixed sleeve 48 and the gas collecting shell 42 to rotate relative to the collecting iron shell 25 and the lifting seat 43 via the first guide block 50, changing the position of the air outlet 47. This allows the plastic particles inside the collecting iron shell 25 to dry evenly, and the residual water droplets inside the collecting iron shell 25 fall into the bottom chamber of the drying chamber 8. When there is a lot of wastewater collected in the drying chamber 8, the valve on the drain pipe 64 can be opened to discharge the wastewater. After drying, the lifting seat 43 is driven to move upward via the fourth hydraulic telescopic rod 44 to prevent the lifting seat 43 from interfering with the rotation of the collecting iron shell 25, and the guide plate 63 is driven to rotate via the fifth servo motor 62. The guide plate 63 changes from being vertically placed to being tilted, so that the guide plate 63 is tilted below the collecting iron shell 25. The second friction disk 41 is driven to rotate by the third servo motor 39. The second friction disk 41 drives the first friction disk 40 and the third rotating shaft 35 to rotate through friction. The third rotating shaft 35 then drives the collecting iron shell 25 to rotate 180 degrees via the second waterproof electromagnet 36. The magnet 37 is no longer magnetically attracted to the corresponding second iron plate 38. The magnet 37 rotates with the third rotating shaft 35. When the collecting iron shell 25 rotates 180 degrees, the magnet 37 is magnetically attracted to the other second iron plate 38. At this time, the collecting iron shell 25 maintains its current position, and the plastic particles inside the collecting iron shell 25 fall out. The fallen plastic particles can slide into the discharge pipe 61 through the inclined guide plate 63, and the dried plastic particles can be discharged through the discharge pipe 61. The fourth hydraulic telescopic rod 44 drives the lifting seat 43 to move downward again. The movable column 45 slides relative to the second guide block 58 and the rotating sleeve 55. The scraper 46 and the bottom of the movable column 45 first come into contact with the second filter screen 27 that has flipped upward. As the lifting seat 43 and the air collecting shell 42 continue to move downward, the scraper 46 slides into the air collecting shell 42 through the air outlet 47. The movable column 45 drives the first guide block 50 to slide relative to the first guide groove 49. The spring 51 is in a stretched state. Finally, the air collecting shell 42 comes into contact with the second filter screen 27. The heated air is blown onto the second filter screen 27 again through the air outlet 47, which can clean out the plastic particles blocked on the second filter screen 27. At this time, the second bevel gear 60 is driven to rotate again by the fourth servo motor 59.The position of the air outlet 47 can be changed again, allowing it to blow air to clean different areas of the second filter screen 27. With increased usage time, the second filter screen 27 can be cleaned periodically for easy maintenance.

[0046] This embodiment also provides a plastic extrusion molding process applied to the plastic extrusion molding equipment described above, including the following steps:

[0047] Step 1: Drive the movable seat 10 and the sealing tube 3 to move by the first hydraulic telescopic rod 9 so that the sealing tube 3 abuts against the extrusion head on the extruder 2;

[0048] Step 2: Water is supplied to the first inlet pipe 4 through the water supply structure. The water enters the sealing pipe 3 through the first inlet pipe 4. The water in the sealing pipe 3 enters the cooling pipe 6 through the first outlet pipe 5. At the same time, the extruder 2 extrudes plastic strips through the extrusion hole on the extrusion head, and the extrusion cutting mechanism cuts the extruded plastic strips.

[0049] Step 3: The cut plastic granules are carried by the water flow into the first water outlet pipe 5 and the cooling pipe 6. As the plastic granules move with the water, the water cools them down.

[0050] Step 4: The cooled water and plastic particles enter the filter box 7 through the cooling pipe 6, are filtered by the filtration mechanism, and then the filtered plastic particles are dried by the flip-type drying structure.

[0051] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

Claims

1. A plastic extrusion molding apparatus, comprising a frame (1) and an extruder (2) fixedly mounted on the frame (1), characterized in that, The frame (1) is provided with a movable seat (10) above it. A first hydraulic telescopic rod (9) is fixedly connected to the frame (1), and the telescopic end of the first hydraulic telescopic rod (9) is fixedly connected to the movable seat (10). A sealing tube (3) is fixedly connected to the side of the movable seat (10) facing the extruder (2). An extrusion cutting mechanism adapted to the extrusion head on the extruder (2) is provided on the sealing tube (3), and several extrusion holes are opened on the extrusion head. The sealing pipe (3) is fixedly connected to the first water inlet pipe (4) and the first water outlet pipe (5). The frame (1) is provided with a water supply structure for supplying water to the first water inlet pipe (4). The frame (1) is fixedly connected to the filter box (7) and the drying box (8). The frame (1) is fixedly connected to the cooling pipe (6). One end of the cooling pipe (6) is slidably installed in the first water outlet pipe (5). The other end of the cooling pipe (6) is fixedly connected to the top of the filter box (7). The filter box (7) is equipped with a filter mechanism for filtering plastic particles. The drying box (8) is equipped with a flip-type drying structure for drying plastic particles. The extrusion cutting mechanism includes several cutting blades (13) disposed in the sealed tube (3), a first rotating shaft (12) rotatably connected through the movable seat (10), a first servo motor (11) fixedly connected to the movable seat (10), one end of the first rotating shaft (12) fixedly connected to the output end of the first servo motor (11), and the other end of the first rotating shaft (12) fixedly connected to several cutting blades (13) located in the sealed tube (3); The water supply structure includes a water tank (15) and a first water pump (17) fixedly installed on the frame (1). The bottom end of the water tank (15) is fixedly connected to a second water outlet pipe (18). The input end of the first water pump (17) and the second water outlet pipe (18) are fixedly connected. The output end of the first water pump (17) is fixedly connected to a second water inlet pipe (16). The end of the second water inlet pipe (16) away from the first water pump (17) is slidably installed inside the first water inlet pipe (4). Several cooling pipes (19) are fixedly connected inside the water tank (15). The liquid inlet end and the liquid outlet end of the cooling pipe (19) extend to the outside of the water tank (15) respectively.

2. The plastic extrusion molding equipment according to claim 1, characterized in that, At least one guide post (14) runs through the movable seat (10), and both ends of the guide post (14) are fixedly connected to the frame (1).

3. The plastic extrusion molding equipment according to claim 1, characterized in that, The filtration mechanism includes a second rotating shaft (20) rotatably mounted inside a filter box (7). A second servo motor (21) is fixedly connected to the bottom of the filter box (7), and the output end of the second servo motor (21) is fixedly connected to the bottom end of the second rotating shaft (20). A first filter screen (22) is sleeved on the outside of the second rotating shaft (20), and the outer wall of the first filter screen (22) is fixedly connected to the inner wall of the filter box (7). Several levers (23) are fixedly connected to the second rotating shaft (20), and the levers (23) respectively contact the top of the first filter screen (22) and the inner wall of the filter box (7). A second water pump (31) is fixedly connected to the top of the frame (1). A drain pipe (30) is fixedly connected to the bottom end of the filter box (7). A valve is provided on the drain pipe (30). The input end of the second water pump (31) is fixedly connected to the drain pipe (30). A return pipe (32) is fixedly connected to the output end of the second water pump (31), and the return pipe (32) is fixedly connected to the bottom end of the filter box (7). 2) The end away from the second water pump (31) is fixedly connected to the top of the water tank (15). The filter box (7) is provided with a collection iron shell (25). The collection iron shell (25) is a cavity structure with openings at both the top and bottom. The first filter screen (22) is provided with a relief groove (24) that is compatible with the collection iron shell (25). The first iron plate (26) is fixedly connected inside the collection iron shell (25). The two sides of the first iron plate (26) are connected to the inner wall of the collection iron shell (25) through the second filter screen (27). The filter box (7) and the drying box (8) are connected through a connecting pipe (65). The filter box (7) is fixedly connected with a second hydraulic telescopic rod (28). The telescopic end of the second hydraulic telescopic rod (28) is fixedly connected with a first waterproof electromagnet (29) that contacts the bottom of the first iron plate (26). The drying box (8) is provided with a transfer unit for driving the collection iron shell (25) to move from the filter box (7) to the drying box (8).

4. The plastic extrusion molding equipment according to claim 3, characterized in that, The transfer unit includes a translation seat (33) installed in the drying box (8), a third rotating shaft (35) rotatably connected through the translation seat (33), a second waterproof electromagnet (36) adapted to the collecting iron shell (25) fixedly connected to the third rotating shaft (35), a third hydraulic telescopic rod (34) fixedly connected to the drying box (8), the output end of the third hydraulic telescopic rod (34) fixedly connected to the translation seat (33), and a rotator for controlling the rotation of the third rotating shaft (35) relative to the translation seat (33) installed on the drying box (8).

5. The plastic extrusion molding equipment according to claim 4, characterized in that, The rotator includes a first friction disc (40) fixedly installed on the end of the third rotating shaft (35) away from the second waterproof electromagnet (36), a third servo motor (39) fixedly connected to the drying box (8), and a second friction disc (41) located inside the drying box (8) fixedly connected to the output end of the third servo motor (39), and the second friction disc (41) and the first friction disc (40) are in contact, a magnet block (37) fixedly connected to the third rotating shaft (35), and two second iron plates (38) adapted to the magnet block (37) fixedly connected to the translation seat (33).

6. The plastic extrusion molding equipment according to claim 1, characterized in that, The tilting drying structure includes a gas collecting shell (42) installed inside the drying chamber (8), a lifting seat (43) rotatably sleeved on the outside of the gas collecting shell (42), a fourth hydraulic telescopic rod (44) fixedly connected to the drying chamber (8), and the telescopic end of the fourth hydraulic telescopic rod (44) fixedly connected to the lifting seat (43), a discharge pipe (61) and a liquid discharge pipe (64) fixedly connected to the bottom of the drying chamber (8), and the liquid discharge pipe (64) is located below the discharge pipe (61), a valve is provided on the liquid discharge pipe (64), a guide component adapted to the discharge pipe (61) is provided on the drying chamber (8), and the top of the drying chamber (8) is fixedly connected to There is at least one air inlet pipe (52), and the bottom end of the air inlet pipe (52) and the air inlet of the air collection shell (42) are connected by a hose (53). A movable column (45) runs through the air collection shell (42). Several scrapers (46) are fixedly connected to the bottom end of the movable column (45). Several air outlet holes (47) adapted to the scrapers (46) are opened at the bottom of the inner wall of the air collection shell (42). The width between the inner walls on both sides of the air outlet hole (47) is greater than the thickness of the scraper (46). A reset component adapted to the movable column (45) is installed on the air collection shell (42). A driver for driving the movable column (45) to rotate is installed on the drying box (8).

7. The plastic extrusion molding equipment according to claim 6, characterized in that, The reset component includes a fixed sleeve (48) sleeved on the outside of the movable column (45). The bottom end of the fixed sleeve (48) is fixedly connected to the top of the gas collecting shell (42). A first guide groove (49) is provided on the inner wall of the fixed sleeve (48). A first guide block (50) is slidably provided in the first guide groove (49). The first guide block (50) is fixedly connected to the movable column (45), and the bottom of the first guide block (50) and the bottom of the inner wall of the first guide groove (49) are connected by several springs (51).

8. The plastic extrusion molding equipment according to claim 6, characterized in that, The driver includes a fixed shell (54) fixedly installed on the top of the drying box (8), the top end of the movable column (45) passing through the fixed shell (54), a rotating sleeve (55) sleeved on the outside of the movable column (45), and the rotating sleeve (55) and the top end of the drying box (8) are rotatably connected. A second guide groove (57) is opened on the movable column (45), a second guide block (58) is slidably provided in the second guide groove (57), and the second guide block (58) and the rotating sleeve (55) are fixedly connected. A first bevel gear (56) located in the fixed shell (54) is fixedly sleeved on the outside of the rotating sleeve (55). A fourth servo motor (59) is fixedly connected on the fixed shell (54), and a second bevel gear (60) meshing with the first bevel gear (56) is fixedly connected to the output end of the fourth servo motor (59).

9. The plastic extrusion molding equipment according to claim 6, characterized in that, The material guide includes a fifth servo motor (62) fixedly installed on the outer wall of the drying box (8). The drying box (8) is provided with a material guide plate (63) adapted to the discharge pipe (61), and the output end of the fifth servo motor (62) and the material guide plate (63) are fixedly connected.

10. A plastic extrusion molding process, using the plastic extrusion molding equipment as described in claim 1, characterized in that: Includes the following steps: Step 1: Drive the movable seat (10) and the sealing tube (3) to move by the first hydraulic telescopic rod (9) so that the sealing tube (3) abuts against the extrusion head on the extruder (2); Step 2: Water is supplied to the first inlet pipe (4) through the water supply structure. The water enters the sealing pipe (3) through the first inlet pipe (4). The water in the sealing pipe (3) enters the cooling pipe (6) through the first outlet pipe (5). At the same time, the extruder (2) extrudes plastic strips through the extrusion hole on the extrusion head, and the extrusion cutting mechanism cuts the extruded plastic strips. Step 3: The cut plastic particles are carried by the water flow into the first water outlet pipe (5) and the cooling pipe (6). As the plastic particles move with the water, the water cools the plastic particles. Step 4: The cooled water and plastic particles enter the filter box (7) through the cooling pipe (6), are filtered by the filter mechanism, and then the filtered plastic particles are dried by the flip-type drying structure.

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