Plastic extrusion molding equipment and molding process thereof

Abstract

The invention relates to the technical field of plastic extrusion molding, in particular to plastic extrusion molding equipment and a molding process thereof.The plastic extrusion molding equipment 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 with the movable seat; the side, facing the extruder, of the movable seat is fixedly connected with a sealing pipe, 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 formed in the extrusion head; a first water inlet pipe and a first water outlet pipe are fixedly connected to the sealing pipe, and a water supply structure used for supplying water into the first water inlet pipe is arranged on the rack; the plastic strips are cut into plastic particles and then cooled, and the surface area of the cut plastic particles is larger than that of the whole plastic strip, so that heat dissipation is faster, cooling is more uniform, internal stress is reduced, and deformation or cracking is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic extrusion molding, in particular to a plastic extrusion molding device and a molding process thereof. Background Art

[0002] Polyurethane materials are widely used in the automotive, construction, home appliance, textile, footwear, leather, and other fields due to their high elasticity, high wear resistance, excellent low-temperature and solvent resistance, and wide range of adjustable properties. The diverse range of polyurethane products and their increasing production also generate a large amount of waste, which can be used as raw material for the preparation of plastic pellets. Existing processes already utilize polyurethane waste to add to PVC materials to produce plastic pellets. The plastic strips extruded by the extruder are generally cooled by passing through a water tank.

[0003] But it is worth considering that the surface area of the entire plastic strip is small. The surface of the plastic strip cools down quickly when it comes into contact with cold water, but the internal heat transfer is slow, resulting in a difference in shrinkage rate inside and outside, which is easy to generate internal stress. It may deform or crack during subsequent processing (such as injection molding), and the heat dissipation efficiency is low.

[0004] Therefore, in order to solve the above problems, a related facility that is more in line with usage needs needs to emerge. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a plastic extrusion molding device and a molding process thereof to solve the above-mentioned problem of small surface area and low heat dissipation efficiency of the entire plastic strip.

[0006] Based on the above objectives, the present invention provides a plastic extrusion molding device, comprising a frame and an extruder fixedly mounted on the frame, a movable seat being provided above the frame, a first hydraulic telescopic rod being fixedly connected to the frame, and a telescopic end of the first hydraulic telescopic rod being fixedly connected to the movable seat, a sealing tube being fixedly connected to a side of the movable seat facing the extruder, an extrusion cutting mechanism being provided on the sealing tube and being compatible with an extrusion head on the extruder, and a plurality of extrusion holes being provided on the extrusion head; The sealing tube is fixedly connected to a first water inlet pipe and a first water outlet pipe respectively, a water supply structure for supplying water to the first water inlet pipe is provided on the frame, a filter box and a drying box are fixedly connected to the frame respectively, a cooling pipe is fixedly connected to the frame, one end of the cooling pipe is slidably installed in the first water outlet pipe, and 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 flip drying structure for drying plastic particles is installed on the drying box.

[0007] Optionally, the extrusion cutting mechanism includes several cutting knives arranged in the sealing tube, a first rotating shaft with a rotatable connection passes through the movable seat, a first servo motor is fixedly connected to the movable seat, one end of the first rotating shaft is fixedly connected to the output end of the first servo motor, and the other end of the first rotating shaft is fixedly connected to the several cutting knives located in the sealing tube.

[0008] Optionally, at least one guide column passes through the movable seat, and both ends of the guide column are fixedly connected to the frame respectively.

[0009] Optionally, the water supply structure includes a water tank and a first water pump fixedly mounted on the frame, the bottom end of the water tank is fixedly connected to a second water outlet pipe, the input end of the first water pump is fixedly connected to the second water outlet pipe, the output end of the first water pump is fixedly connected to a second water inlet pipe, and the end of the second water inlet pipe away from the first water pump is slidably mounted in the first water inlet pipe, a number of cooling pipes are fixedly connected in the water tank, and the liquid inlet end and liquid outlet end of the cooling pipes extend to the outside of the water tank respectively.

[0010] Optionally, the filtering mechanism includes a second rotating shaft rotatably installed in the filter box, a second servo motor is fixedly connected to the bottom of the filter box, and the output end of the second servo motor is fixedly connected to the bottom end of the second rotating shaft, the outer sleeve of the second rotating shaft is provided with a first filter screen, and the outer wall of the first filter screen is fixedly connected to the inner wall of the filter box, a plurality of dial plates are fixedly connected to the second rotating shaft, and the dial plates are respectively in contact with the top of the first filter screen and the inner wall of the filter box, a second water pump is fixedly connected to the top of the frame, a drain pipe is fixedly connected to the bottom end of the filter box, a valve is provided on the drain pipe, the input end of the second water pump is fixedly connected to the drain pipe, and the output end of the second water pump is fixedly connected to the return pipe. The filter box is provided with a collecting iron shell, which is a cavity structure with openings at the top and bottom ends. The first filter screen is provided with an avoidance groove adapted to the collecting iron shell. The collecting iron shell is fixedly connected with a first iron plate, and the two sides of the first iron plate are connected to the inner wall of the collecting iron shell through the second filter screen. The filter box and the drying box are connected by a connecting pipe. The filter box is fixedly connected with a second hydraulic telescopic rod, and the telescopic end of the second hydraulic telescopic rod is fixedly connected with a first waterproof electromagnet in contact with the bottom of the first iron plate. The drying box is provided with a transfer unit for driving the collecting iron shell to move from the filter box to the drying box.

[0011] Optionally, the transfer unit includes a translation seat arranged in the drying box, a third rotating shaft connected to the translation seat passes through the translation seat, a second waterproof electromagnet compatible with the collecting iron shell is fixedly connected to the third rotating shaft, a third hydraulic telescopic rod is fixedly connected to the drying box, the output end of the third hydraulic telescopic rod is fixedly connected to the translation seat, and a rotator for controlling the rotation of the third rotating shaft relative to the translation seat is installed on the drying box.

[0012] Optionally, the rotator includes a first friction disk fixedly mounted on the third rotating shaft away from one end of the second waterproof electromagnet, a third servo motor is fixedly connected to the drying box, and the output end of the third servo motor is fixedly connected to the second friction disk located in the drying box, and the second friction disk is in contact with the first friction disk, a magnet block is fixedly connected to the third rotating shaft, and two second iron plates adapted to the magnet block are fixedly connected to the translation seat.

[0013] The top of the drying box is fixedly connected to a discharge pipe and a liquid discharge pipe, and the discharge pipe is located below the discharge pipe, a valve is provided on the discharge pipe, and a material guide member adapted for use with the discharge pipe is provided on the drying box. The top of the drying box is fixedly connected to at least one air inlet pipe, and the bottom end of the air inlet pipe is connected to the air inlet of the drying box by a hose. A movable column passes through the air collecting shell, and a plurality of scrapers are fixedly connected to the bottom end of the movable column. A plurality of air outlet holes adapted for use with the scrapers are opened at the bottom of the inner wall of the air collecting shell, and the width between the inner walls on both sides of the air outlet is greater than the thickness of the scraper. A reset member adapted for the movable column is installed on the air collecting shell, and a driver for driving the movable column to rotate is installed on the drying box.

[0014] Optionally, the reset member includes a fixed sleeve arranged on the outside of the movable column, the bottom end of the fixed sleeve is fixedly connected to the top of the gas collecting shell, a first guide groove is opened on the inner wall of the fixed sleeve, a first guide block is slidably arranged in the first guide groove, the first guide block is fixedly connected to the movable column, and the bottom of the first guide block and the bottom of the inner wall of the first guide groove are connected by a number of springs.

[0015] Optionally, the driver includes a fixed shell fixedly mounted on the top of the drying box, the top of the movable column passes through the fixed shell, the outer sleeve of the movable column is provided with a rotating sleeve, and the rotating sleeve is rotatably connected to the top of the drying box, a second guide groove is provided on the movable column, a second guide block is slidingly provided in the second guide groove, and the second guide block is fixedly connected to the rotating sleeve, the outer fixed sleeve of the rotating sleeve is provided with a first bevel gear located in the fixed shell, a fourth servo motor is fixedly connected to the fixed shell, and the output end of the fourth servo motor is fixedly connected to the second bevel gear meshing with the first bevel gear.

[0016] Optionally, the material guide member includes a fifth servo motor fixedly mounted on the outer wall of the drying box, a material guide plate adapted to the discharge pipe is provided in the drying box, and the output end of the fifth servo motor is fixedly connected to the material guide plate.

[0017] The present invention also provides a plastic extrusion molding process, which is applied to the plastic extrusion molding equipment as described above, comprising the following steps: Step 1: driving the movable seat and the sealing tube to move by a first hydraulic telescopic rod so that the sealing tube abuts against the extrusion head on the extruder; Step 2: Water is supplied to the first water inlet pipe through the water supply structure. The water enters the sealed pipe through the first water inlet pipe. The water in the sealed pipe enters the cooling pipe through the first water outlet pipe. At the same time, the extruder extrude the plastic strip through the extrusion hole on the extrusion head, and the extrusion cutting mechanism cuts the extruded plastic strip. Step 3: The cut plastic particles are carried by the water flow into the first water outlet pipe and the cooling pipe. 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 through the cooling pipe, are filtered by the filtering mechanism, and then the filtered plastic particles are dried by the flip drying structure.

[0018] The beneficial effects of the present invention are as follows: the movable seat and the sealing tube are driven to move by the first hydraulic telescopic rod so that the sealing tube is abutted 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, the water in the sealing tube enters the cooling tube through the first water outlet pipe, and at the same time the extruder extrude the 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 brought into the first water outlet pipe and the cooling tube by the water flow, and in the process of the plastic particles following the movement of the water, the plastic particles are cooled by the water, the cooled water and plastic particles enter the filter box through the cooling tube, are filtered by the filtering mechanism, and then the filtered plastic particles are dried by the flip drying structure, the plastic strip is cut into plastic particles and then cooled, the surface area of the cut plastic particles is larger than the whole plastic, which makes the heat dissipation faster, the cooling more uniform, reduces internal stress, and avoids deformation or cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is one of the overall structural diagrams of an embodiment of the present invention; Figure 2 This is the second schematic diagram of the overall structure of an embodiment of the present invention; Figure 3 This is a schematic structural diagram of a movable seat according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure inside the filter box according to an embodiment of the present invention; Figure 5 This is a structural diagram 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; Figure 6 This is a schematic structural diagram of a cooling tube according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure inside the fixed housing according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure inside the gas collecting housing and the fixing sleeve according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure inside the drying box according to an embodiment of the present invention; Figure 10 Schematic diagram of the structure of the translation seat according to an embodiment of the present invention.

[0021] The following are marked in the figure: 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 knife; 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; 23. Dial plate; 24. Avoidance groove; 25. Collecting iron shell; 26. First iron plate; 27. Second filter; 28. Second hydraulic telescopic rod; 29. First waterproof electromagnet; 30. Drain pipe; 31. Second water pump; 32. Return pipe; 33. Translation seat; 34 , third hydraulic telescopic rod; 35, third rotating shaft; 36, second waterproof electromagnet; 37, magnet block; 38, second iron plate; 39, third servo motor; 40, first friction disc; 41, second friction disc; 42, gas collecting shell; 43, lifting seat; 44, fourth hydraulic telescopic rod; 45, movable column; 46, scraper; 47, air outlet; 48, fixed sleeve; 49, first guide groove; 50, first guide block; 51, spring; 52, air inlet pipe; 53, hose; 54, fixed shell; 55, rotating sleeve; 56, first bevel gear; 57, second guide groove; 58, second guide block; 59, fourth servo motor; 60, second bevel gear; 61, discharge pipe; 62, fifth servo motor; 63, guide plate; 64, discharge pipe; 65, connecting pipe. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0023] Embodiment 1, by Figure 1 、 Figure 2 and Figure 3The 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, and a sealing tube 3 is fixedly connected to the side of the movable seat 10 facing the extruder 2, and the sealing tube 3 is provided with an extrusion cutting mechanism adapted to the extrusion head on the extruder 2, and a plurality of 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 respectively. 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 respectively. The frame 1 is fixedly connected with a 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 filtering mechanism for filtering plastic particles, and the drying box 8 is equipped with a flip-type drying structure for drying plastic particles. The movable seat 10 and the sealing pipe 3 are driven to move by the first hydraulic telescopic rod 9 to make the sealing pipe 3 abut against the extrusion head on the extruder 2, and water is supplied to the first water inlet pipe 4 through the water supply structure. Water enters the first water inlet pipe 4 through the first water inlet pipe 4. In the sealed tube 3, the water in the sealed tube 3 enters the cooling tube 6 through the first water outlet pipe 5. At the same time, the extruder 2 extrudes the 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 brought into the first water outlet pipe 5 and the cooling tube 6 by the water flow. In the process of the plastic particles moving with the water, the plastic particles are cooled by the water. The cooled water and plastic particles enter the filter box 7 through the cooling tube 6, are filtered by the filtering mechanism, and then the filtered plastic particles are dried by the flip 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 entire plastic, which makes the heat dissipation faster, the cooling more uniform, reduces internal stress, and avoids deformation or cracking.

[0024] Example 2, based on Example 1, Figure 1 、 Figure 2 、 Figure 3 and Figure 6The extrusion cutting mechanism includes a plurality of cutting knives 13 arranged in the sealing tube 3, a first rotating shaft 12 is passed through the movable seat 10 for rotation, a first servo motor 11 is fixedly connected to the movable seat 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 the plurality of cutting knives 13 located in the sealing tube 3, at least one guide column 14 is passed through the movable seat 10, and both ends of the guide column 14 are fixedly connected to the frame 1, respectively, and the water supply The structure includes a water tank 15 and a first water pump 17 fixedly mounted 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 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, and the end of the second water inlet pipe 16 away from the first water pump 17 is slidably mounted in the first water inlet pipe 4. A plurality of cooling pipes 19 are fixedly connected to the water tank 15, and the liquid inlet and liquid outlet ends of the cooling pipes 19 extend to the outside of the water tank 15 respectively. 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 column 14. The design of the guide column 14 increases the stability of the translation of the movable seat 10, and 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 the rubber sealing sleeve, which can increase the sealing performance of the connection between the first water inlet pipe 4 and the second water inlet pipe 16, and can increase the sealing performance of the first water inlet pipe 4 and the second water inlet pipe 16. The sealing of the connection between the water outlet pipe 5 and the cooling pipe 6 is ensured by the first servo motor 11 driving the first rotating shaft 12 to rotate. The first rotating shaft 12 can cut the extruded plastic strips into particles through the cutting knife 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 bring the cut plastic particles to the first water outlet pipe 5 and the cooling pipe 6.

[0025] Example 3, based on Example 2, Figure 2 、 Figure 4 、 Figure 5 、 Figure 9 and Figure 10The filtering mechanism includes a second rotating shaft 20 rotatably mounted in the 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, a plurality of dial plates 23 are fixedly connected to the second rotating shaft 20, and the dial plates 23 are respectively in contact with 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. 0 is provided 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 provided with a collecting iron shell 25, the collecting iron shell 25 is a cavity structure with openings at the top and bottom, the first filter screen 22 is provided with a avoidance groove 24 adapted to the collecting iron shell 25, the collecting iron shell 25 is fixedly connected with a first iron plate 26, and the two sides of the first iron plate 26 are connected to the inner wall of the collecting iron shell 25 through a second filter screen 27, the filter box 7 and the drying box 8 are connected by a connecting pipe 65 connection, the filter box 7 is fixedly connected to a second hydraulic telescopic rod 28, the telescopic end of the second hydraulic telescopic rod 28 is fixedly connected to a first waterproof electromagnet 29 in contact with the bottom of the first iron plate 26, and 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, the transfer unit includes a translation seat 33 provided in the drying box 8, the translation seat 33 is penetrated by a third rotating shaft 35 connected in rotation, the third rotating shaft 35 is fixedly connected to a second waterproof electromagnet 36 adapted to the collection iron shell 25, the drying box 8 is fixedly connected to a third hydraulic telescopic rod 34, the third hydraulic telescopic rod 34 is fixedly connected to the drying box 8, and the third hydraulic telescopic rod 34 is fixedly connected to the drying box 8. 4 is 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 is installed on the drying box 8. The rotator includes a first friction disk 40 fixedly mounted on the end of the third rotating shaft 35 away from the second waterproof electromagnet 36. The drying box 8 is fixedly connected to a third servo motor 39, and the output end of the third servo motor 39 is fixedly connected to a second friction disk 41 located in the drying box 8, and the second friction disk 41 is in contact with the first friction disk 40. 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; The water mixed with plastic particles in the cooling pipe 6 enters the filter box 7 and can be filtered by the first filter screen 22. The plastic particles stay between the two adjacent dial plates 23. When the water level in the filter box 7 is at a preset position, the valve on the drain pipe 30 is opened, and the second water pump 31 is started. The second water pump 31 and the first water pump 17 work synchronously, and the second water pump 31 can return the filtered water in the filter box 7 to the water tank 15 through the drain pipe 30 and the return pipe 32. When it is necessary to collect the plastic particles filtered out by the first filter screen 22, the second servo motor 21 drives the second rotating shaft 20 and the dial plate 23 to rotate. When the two adjacent dial plates 23 push the plastic particles from the top of the first filter screen 22 to the top of the collecting iron shell 25, the second hydraulic telescopic rod 28 drives the first waterproof electromagnet 29 and the collecting iron shell 25 to move upward, and the plastic particles are concentrated in the collecting iron shell 25 and pass through the second filter screen 2 in the collecting iron shell 25. 7 filters out excess water until the collection 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, and 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 collection iron shell 25. At this time, the second waterproof electromagnet 36 is energized, and the second waterproof electromagnet 36 and the collection iron shell 25 are magnetically attracted, and the first waterproof electromagnet 29 is de-energized, and the first waterproof electromagnet 29 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 through the connecting pipe 65 into the drying box 8, and the collection iron shell 25 moves into the drying box 8 through the connecting pipe 65 until the first friction disc 40 and the second friction disc 41 contact, so that the collection iron shell 25 containing the plastic particles can be transferred to the drying box 8. Similarly, the above steps can be reversed to make the collection iron shell 25 move to the filter box 7 again.

[0026] Example 4, based on Example 3, Figure 1 、 Figure 2 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10The flip drying structure includes an air collecting shell 42 arranged in the drying box 8, and the outer rotating sleeve of the air collecting shell 42 is provided with a lifting seat 43. The drying box 8 is fixedly connected with a fourth hydraulic telescopic rod 44, and the telescopic end of the fourth hydraulic telescopic rod 44 is fixedly connected to the lifting seat 43. The bottom end of the drying box 8 is respectively fixedly connected with a discharge pipe 61 and a drain pipe 64, and the drain pipe 64 is located below the discharge pipe 61. A valve is provided on the drain pipe 64. The drying box 8 is provided with a material guide member adapted to the discharge pipe 61. The top of the drying box 8 is fixedly connected with at least one air inlet pipe 52, and the air inlet pipe 52 is fixedly connected to the bottom end of the drying box 8. The bottom end and the air inlet of the gas collecting shell 42 are connected by a hose 53. A movable column 45 is passed through the gas collecting shell 42. The bottom end of the movable column 45 is fixedly connected to a plurality of scrapers 46. The bottom of the inner wall of the gas collecting shell 42 is provided with a plurality of air outlet holes 47 adapted to the scrapers 46, and the width between the inner walls on both sides of the air outlet holes 47 is greater than the thickness of the scrapers 46. A reset member adapted to the movable column 45 is installed on the gas collecting shell 42, and a driver for driving the movable column 45 to rotate is installed on the drying box 8. The reset member includes a fixed sleeve 48 sleeved on the outside of the movable column 45, and the bottom end of the fixed sleeve 48 and the top of the gas collecting shell 42 are connected. The first guide block 50 is slidably provided in the first guide groove 49, and the first guide block 50 is fixedly connected to the movable column 45. The bottom of the first guide block 50 and the bottom of the inner wall of the first guide groove 49 are connected by a plurality of springs 51. The driver includes a fixed shell 54 fixedly mounted on the top of the drying box 8. The top of the movable column 45 passes through the fixed shell 54. The outer sleeve of the movable column 45 is provided with a rotating sleeve 55, and the rotating sleeve 55 is rotatably connected to the top of the drying box 8. The movable column 45 is provided with a second guide groove 57. The second guide 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. The outer fixed sleeve of the rotating sleeve 55 is provided with a first bevel gear 56 located in the fixed housing 54. The fixed housing 54 is fixedly connected to a fourth servo motor 59. The output end of the fourth servo motor 59 is fixedly connected to a second bevel gear 60 that meshes with the first bevel gear 56. The material guide member includes a fifth servo motor 62 fixedly mounted 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. When the collection iron shell 25 is transferred to the drying box 8, the fourth hydraulic telescopic rod 44 drives the lifting seat 43 and the air collecting shell 42 to move downward, and finally the lifting seat 43 and the top of the collection iron shell 25 are abutted, and the scraper 46 is inserted into the collection iron shell 25, and the heated air is input 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 collection iron shell 25 through the air outlet 47, and the plastic particles are dried by the heated air, and the fourth servo motor 59 drives the second bevel gear 60 to rotate, and the second bevel gear 60 drives the rotating sleeve 55 and the second guide block 58 to rotate through the first bevel gear 56, and the second guide block 58 can drive the scraper 46 to scrape the plastic particles in the collection 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 through the first guide block 50, changing the position of the air outlet 47, so that the plastic particles in the collecting iron shell 25 can be dried evenly, and the residual water in the collecting iron shell 25 drops into the bottom chamber of the drying box 8. When the waste water collected in the drying box 8 is large, the valve on the drain pipe 64 is opened to discharge the waste water in a centralized manner. When the drying is completed, the lifting seat 43 is driven to move upward by the fourth hydraulic telescopic rod 44 to prevent the lifting seat 43 from interfering with the turning over of the collecting iron shell 25, and the guide plate 63 is driven to rotate by the fifth servo motor 62. The guide plate 63 is changed from a vertical position to an inclined position, so that the guide plate 63 is tilted and arranged below the collecting iron shell 25, and then The second friction disc 41 is driven to rotate by the third servo motor 39, and the second friction disc 41 drives the first friction disc 40 and the third rotating shaft 35 to rotate through the friction force. The third rotating shaft 35 can drive the collecting iron shell 25 to flip 180 degrees through the second waterproof electromagnet 36, and the magnet block 37 is no longer magnetically attracted to the corresponding second iron plate 38. The magnet block 37 rotates with the third rotating shaft 35. When the collecting iron shell 25 flips 180 degrees, the magnet block 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 in the collecting iron shell 25 fall out. The plastic particles that fall out 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, and the scraper 46 and the bottom of the movable column 45 first abut against the second filter 27 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, and 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, and finally the air collecting shell 42 contacts the second filter 27. The heated air is blown toward the second filter 27 through the air outlet 47 again, and the plastic particles blocked on the second filter 27 can be cleaned out. 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 so that the air outlet 47 can blow air to different positions on the second filter 27 for cleaning. As the use time increases, the second filter 27 can be cleaned regularly to facilitate later maintenance and use.

[0027] This embodiment also provides a plastic extrusion molding process, which is applied to the plastic extrusion molding equipment as described above, and includes the following steps: Step 1: The movable seat 10 and the sealing tube 3 are driven 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 water inlet pipe 4 through the water supply structure. The water enters the sealed tube 3 through the first water inlet pipe 4. The water in the sealed tube 3 enters the cooling tube 6 through the first water outlet pipe 5. At the same time, the extruder 2 extrude the plastic strip through the extrusion hole on the extrusion head, and the extrusion cutting mechanism cuts the extruded plastic strip. 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 filtering mechanism, and then the filtered plastic particles are dried by the flip drying structure.

[0028] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

Claims

1. A plastic extrusion molding device, comprising a frame (1) and an extruder (2) fixedly mounted on the frame (1), characterized in that: 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), an extrusion cutting mechanism adapted to the extrusion head on the extruder (2) is provided on the sealing tube (3), and a plurality of extrusion holes are provided on the extrusion head; The sealing tube (3) is fixedly connected to a first water inlet pipe (4) and a first water outlet pipe (5), respectively; 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 tube (6) is fixedly connected to the frame (1); one end of the cooling tube (6) is slidably mounted in the first water outlet pipe (5), and the other end of the cooling tube (6) is fixedly connected to the top of the filter box (7); a filtering mechanism for filtering plastic particles is installed on the filter box (7), and a flip drying structure for drying plastic particles is installed on the drying box (8).

2. The plastic extrusion molding equipment according to claim 1, characterized in that: The extrusion cutting mechanism includes a plurality of cutting knives (13) arranged in the sealing tube (3), a first rotating shaft (12) is passed through the movable seat (10), a first servo motor (11) is fixedly connected to the movable seat (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 the plurality of cutting knives (13) located in the sealing tube (3).

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

4. The plastic extrusion molding equipment according to claim 1, characterized in that: The water supply structure comprises a water tank (15) and a first water pump (17) fixedly mounted 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) 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); and one end of the second water inlet pipe (16) away from the first water pump (17) is slidably mounted in the first water inlet pipe (4); a plurality of cooling pipes (19) are fixedly connected in the water tank (15), and the liquid inlet end and the liquid outlet end of the cooling pipe (19) respectively extend to the outside of the water tank (15).

5. The plastic extrusion molding equipment according to claim 4, characterized in that: The filtering mechanism comprises a second rotating shaft (20) rotatably mounted in the 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), a plurality of dial plates (23) are fixedly connected to the second rotating shaft (20), and the dial plates (23) are respectively in contact with 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), an input end of the second water pump (31) is fixedly connected to the drain pipe (30), an output end of the second water pump (31) is fixedly connected to the return pipe (32), and the return pipe (3 2) One end away from the second water pump (31) is fixedly connected to the top of the water tank (15), a collecting iron shell (25) is provided in the filter box (7), the collecting iron shell (25) is a cavity structure with both the top and bottom ends opened, a first filter screen (22) is provided with an avoidance groove (24) adapted to the collecting iron shell (25), a first iron plate (26) is fixedly connected in the collecting iron shell (25), and both 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 through a connecting pipe (65), a second hydraulic telescopic rod (28) is fixedly connected to the filter box (7), and the telescopic end of the second hydraulic telescopic rod (28) is fixedly connected to a first waterproof electromagnet (29) in contact with the bottom of the first iron plate (26), and a transfer unit for driving the collecting iron shell (25) to move from the filter box (7) to the drying box (8) is provided in the drying box (8).

6. The plastic extrusion molding equipment according to claim 5, characterized in that: The transfer unit includes a translation seat (33) arranged in a drying box (8), a third rotating shaft (35) is passed 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), an output end of the third hydraulic telescopic rod (34) is 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) is installed on the drying box (8).

7. The plastic extrusion molding equipment according to claim 6, characterized in that: The rotator includes a first friction disc (40) fixedly mounted on an end of a third rotating shaft (35) away from a second waterproof electromagnet (36); a third servo motor (39) is fixedly connected to the drying box (8); an output end of the third servo motor (39) is fixedly connected to a second friction disc (41) located in the drying box (8); and the second friction disc (41) and the first friction disc (40) are in contact with each other; 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).

8. The plastic extrusion molding equipment according to claim 1, characterized in that: The flip drying structure includes an air collecting shell (42) arranged in a drying box (8), an outer rotating sleeve of the air collecting shell (42) is provided with a lifting seat (43), a fourth hydraulic telescopic rod (44) is fixedly connected to the drying box (8), and the telescopic end of the fourth hydraulic telescopic rod (44) is fixedly connected to the lifting seat (43), the bottom end of the drying box (8) is respectively fixedly connected to a discharge pipe (61) and a liquid discharge pipe (64), and the liquid discharge pipe (64) is located below the discharge pipe (61), and a valve is provided on the liquid discharge pipe (64), the drying box (8) is provided with a material guide member adapted to the discharge pipe (61), and the top end of the drying box (8) is fixedly connected to the discharge pipe (61). 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 collecting shell (42) are connected through a hose (53). A movable column (45) is passed through the air collecting shell (42), and a plurality of scrapers (46) are fixedly connected to the bottom end of the movable column (45). A plurality of air outlet holes (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 outlet holes (47) is greater than the thickness of the scrapers (46). A reset member adapted to the movable column (45) is installed on the air collecting shell (42), and a driver for driving the movable column (45) to rotate is installed on the drying box (8).

9. The plastic extrusion molding equipment according to claim 8, characterized in that: The reset member 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 a plurality of springs (51).

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

11. The plastic extrusion molding equipment according to claim 8, characterized in that: The material guide member comprises a fifth servo motor (62) fixedly mounted 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 an output end of the fifth servo motor (62) is fixedly connected to the material guide plate (63).

12. A plastic extrusion molding process, applied to the plastic extrusion molding equipment according to claim 1, characterized in that: The following steps are involved: Step 1: driving the movable seat (10) and the sealing tube (3) to move via 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 water inlet pipe (4) through the water supply structure, the water enters the sealing pipe (3) through the first water inlet pipe (4), the water in the sealing pipe (3) enters the cooling pipe (6) through the first water outlet pipe (5), and at the same time, the extruder (2) extrude the plastic strip through the extrusion hole on the extrusion head, and the extrusion cutting mechanism cuts the extruded plastic strip; 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 filtering mechanism, and then the filtered plastic particles are dried by the flip drying structure.

Images