A nylon raw material extrusion equipment

Abstract

This invention belongs to the field of extruder technology and discloses a nylon raw material extrusion device, including an extruder body and an air pump fixedly installed thereon, and further including: a die assembly disposed at one end of the extruder body; a cleaning assembly movably installed inside the die assembly; and a progressive assembly. The above solution, through the cooperation of structures such as the piston rod, cylindrical block, push rod, and elastic rod, enables the device to have a good cleaning effect on the extruder die during emergency stops. The die body is sealed by the rotation of the isolation cylinder, and after the raw material inside the isolation cylinder is extruded by the hydraulic assembly driving the sleeve, the isolation plate rotates, connecting the three-way pipes on both sides through guide holes. At this time, the piston rod can enter the next cylindrical block and repeat the above process until all the raw material inside the die body is completely removed.

Description

Technical Field

[0001] This invention belongs to the field of extruder technology, specifically a nylon raw material extrusion equipment. Background Technology

[0002] An extruder is a high-efficiency plastic processing equipment that can plasticize and mix nylon raw materials under high temperature and high pressure, and extrude them into strips through the die of the extruder. The strips of nylon raw materials are then immersed in water to cool and then conveyed to a pelletizer to obtain modified nylon raw materials.

[0003] When an extruder needs to be stopped, to prevent the die from clogging after the raw material cools down, the feed is often stopped before the extruder is shut down, and the extruder continues to run for a period of time until all the raw material inside the screw is discharged. However, since nylon is a heat-sensitive material, polyolefin plastic is usually used to extrude all the material in the barrel to prevent the material from overheating and decomposing due to excessive heating time before restarting. But if the internal temperature of the extruder is too high or the equipment malfunctions, the extruder needs to be stopped for maintenance. During this time, the nylon raw material inside the die will cool down rapidly and clog the die. Since the extruder has already stopped, we cannot use the above method to clean the die. Disassembling and cleaning the clogged die is a cumbersome process. Therefore, to solve the above problems, a nylon raw material extrusion device is proposed. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a nylon raw material extrusion device that solves the problem of easy clogging of the extruder die head during emergency shutdown.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a nylon raw material extrusion device, comprising an extruder body and an air pump fixedly installed thereon, and further comprising: a die assembly disposed at one end of the extruder body; a cleaning assembly movably installed inside the die assembly; and a advancing assembly disposed inside the cleaning assembly; the die body is fixedly installed at one end of the extruder body, a sleeve is sleeved inside the die body, hydraulic components for pushing and pulling the sleeve are provided at the upper and lower ends of the die body, a first discharge port and a second discharge port are equidistantly opened inside the die body, and an isolation cylinder for sealing the connection between the die body and the extruder body is also movably connected inside the die body;

[0006] The sleeve has several cylindrical blocks fixedly fitted at equal intervals inside. The upper and lower parts of the cylindrical blocks are fixedly connected to a three-way pipe. The air pump pumps gas into the cylindrical blocks through the first set of three-way pipes and pushes the push rod and elastic rod movably connected inside the cylindrical blocks to move, thereby pushing out the residual raw materials inside the first and second discharge ports respectively.

[0007] After the first set of cylindrical blocks has cleaned the corresponding first and second discharge ports, the air pump connects to the next set of cylindrical blocks through the first set of three-way pipes, the isolation plate, and the next set of three-way pipes, and pumps gas into the next set of cylindrical blocks, pushing the push rod and elastic rod inside the next set of cylindrical blocks to move.

[0008] Preferably, the die head assembly further includes two sets of pressure blocks movably connected inside the die head body and located above and below the isolation cylinder, respectively, and a long plate movably connected inside the pressure blocks, with a screw threadedly connected to the die head body at one end of the long plate; a worm gear is movably connected inside the die head body; and a sealing block is threadedly connected to one end of the die head body.

[0009] The sleeve is fitted with a connecting plate at one end outside the die head body. The upper and lower ends of the die head body are fixed with hydraulic rods for pushing and pulling the connecting plate. The worm gear rotates to drive the isolation cylinder to rotate 90 degrees, and the screw rotates to push the long plate to move.

[0010] Preferably, a heat-conducting pipe for inputting heat from the extruder body to the die body is fixedly connected to the extruder body, and two sets of circular holes and one set of feed grooves are equidistantly opened on the isolation cylinder, with the included angle between the three being ninety degrees.

[0011] The upper pressure block is an equidistant cylinder facing the isolation cylinder, while the lower pressure block is an arc surface facing the isolation cylinder. The two sets of pressure blocks move towards each other until they are in contact with the inner wall of the isolation cylinder.

[0012] Preferably, the long plate has pins at equal intervals at both ends, and guide grooves are equally spaced on the inner walls of both sides of the pressure block. The movement of the long plate causes the pins to move along the inner wall of the guide grooves, and causes the pressure blocks to move towards each other, pushing the raw materials remaining in the isolation cylinder's circular hole and the long groove into the isolation cylinder.

[0013] Preferably, the tee pipe is divided into a main pipe and a side pipe; a piston rod is movably connected in the main pipe; a first sliding groove and a second sliding groove are interconnected and formed on the piston rod; and an elastic block is elastically and movably connected in the side pipe.

[0014] The piston rod is also movably connected to a set of symmetrical ball bearings at the end facing the isolation plate. The end of the piston rod facing the isolation plate is chamfered. When the piston rod moves, one end of the elastic block will be inserted into the first sliding groove. At this time, the main pipe is connected to the inside of the cylindrical block through the side pipe.

[0015] Preferably, the progressive component includes a push rod movably connected inside the cylindrical block, the push rod having an elastic rod movably connected inside it, one end of the elastic rod being fixedly connected to a hook, and one end of the push rod being elastically connected to an elastic column. The isolation plate and the cylindrical block are respectively provided with a J-shaped groove and a first straight groove, and one end of the J-shaped groove is provided with a round hole.

[0016] Preferably, one end of the push rod is provided with a set of symmetrical convex shafts, which are respectively inserted into the J-shaped groove and the first straight groove. The gas inside the cylindrical block will push the push rod to squeeze out the residual raw material inside the first outlet. After the convex shaft on the push rod slides into the hook-shaped part of the J-shaped groove, it will squeeze the inner wall of this part and rotate the partition plate, and connect the guide hole opened on the partition plate with the three-way pipes on both sides. At this time, the piston rod can enter the next three-way pipe through the guide hole.

[0017] Preferably, one end of the hook has a notch, and the middle part of the elastic post has a groove that is misaligned with the notch of the hook. The elastic post is used to fix and snap into the hook to keep the relative position of the push rod and the elastic rod unchanged.

[0018] Preferably, when the hook slides to be concentric with the cross-section of the circular hole, the gas pressure inside the cylindrical block will push one end of the hook into the circular hole, and make the notch on the hook coincide with the groove on the elastic column. At this time, the gas pressure inside the cylindrical block will push the elastic rod to squeeze out the residual material in the second discharge port.

[0019] Preferably, when the piston rod slides into the next tee pipe, the first groove will release the fixation on one end of the elastic block, and under the action of the gas pressure inside the cylindrical block, push the elastic block to seal the side pipe of the tee pipe, so as to ensure the sealing inside the previous set of cylindrical blocks. At this time, one end of the previous set of elastic blocks coincides with the second groove in cross section.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] The above solution, through the cooperation of structures such as piston rod, cylindrical block, push rod, and elastic rod, enables the device to have a good cleaning effect on the extruder die head during emergency stop. The die head body is sealed by the rotation of the isolation cylinder, and the raw material in the isolation cylinder is squeezed out by the sleeve driven by the hydraulic component. Then, the air pump is run and gas is injected into the cylindrical block through the three-way pipe. This pushes the push rod to squeeze out the raw material in the first discharge port. At this time, the elastic rod will move with the push rod to the end of the J-shaped groove and be stuck in the round hole under the pressure inside the cylindrical block. At the same time, the elastic rod releases the fixation of the hook, and the pressure inside the cylindrical block will push the elastic rod to completely squeeze out the remaining material in the second discharge port. When the cam on the push rod slides to the end of the J-shaped groove, it will also cause the isolation plate to rotate and connect the three-way pipes on both sides through the guide hole. At this time, the piston rod can enter the next cylindrical block and repeat the above process until all the raw material inside the die head body is completely removed.

[0022] The above solution utilizes the coordination between structures such as the isolation cylinder, pressure block, heat pipe, and sealing block to prevent the sleeve from squeezing the raw material in the isolation cylinder back into the extruder body, while also preventing residual raw material in the isolation cylinder. In the event of an emergency stop of the extruder body, the heat pipe will still transfer heat from the extruder body to the die head body, keeping the raw material in a molten state. First, the worm gear is rotated to rotate the isolation cylinder counterclockwise by 90 degrees, thus isolating the die head body from the extruder body. Then, the two screws are rotated to move the two pressure blocks towards each other, pushing the residual raw material in the circular hole and long groove of the isolation cylinder into the isolation cylinder. At the same time, the sealing block is opened. Then, the operator operates the hydraulic rod, which drives the sleeve through the connecting plate to discharge the residual raw material in the isolation cylinder in the die head body through the hole at the sealing block and the first and second discharge ports. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the top planar structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the mold head assembly of the present invention;

[0026] Figure 4 This is a side sectional view of the mold head body of the present invention and an enlarged view of the isolation plate.

[0027] Figure 5 This is a schematic diagram of the back cross-sectional structure of the worm gear of the present invention;

[0028] Figure 6 This is an exploded view of the mold head assembly and an enlarged view of the guide groove of the present invention;

[0029] Figure 7This is a front cross-sectional view of the pressing block of the present invention;

[0030] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0031] Figure 9 for Figure 7 Schematic diagram of the cross-sectional structure at point DD;

[0032] Figure 10 for Figure 9 Enlarged view of point B in the middle;

[0033] Figure 11 for Figure 7 Schematic diagram of the cross-sectional structure at the middle EE;

[0034] Figure 12 for Figure 11 Enlarged view of point C in the middle;

[0035] Figure 13 This is a schematic diagram and an enlarged view of the structure of the tee pipe of the present invention.

[0036] In the diagram: 100, Extruder body; 200, Heat pipe; 300, Air pump; 400, Die head assembly; 401, Die head body; 4011, First discharge port; 4012, Second discharge port; 402, Isolation cylinder; 403, Press block; 4031, Guide groove; 404, Screw; 405, Worm gear; 406, Sealing block; 407, Long plate; 500, Cleaning assembly; 501, Sleeve; 502, Cylindrical block; 5021, First... Straight groove; 503, T-joint; 504, piston rod; 5041, first slide groove; 5042, second slide groove; 5043, ball bearing; 505, elastic block; 506, isolation plate; 5061, guide hole; 600, progressive assembly; 601, hook; 602, elastic column; 603, J-shaped groove; 6031, round hole; 604, push rod; 605, elastic rod; 700, hydraulic assembly; 701, hydraulic rod; 702, connecting plate. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figures 1 to 13 As shown, the present invention provides a nylon raw material extrusion device, including an extruder body 100 and an air pump 300 fixedly installed thereon, and further comprising:

[0039] The die assembly 400 is disposed at one end of the extruder body 100;

[0040] Cleaning component 500 is movably installed inside the mold head component 400;

[0041] Progressive component 600 is located inside cleanup component 500;

[0042] One end of the extruder body 100 is fixedly installed with a die head body 401. A sleeve 501 is sleeved inside the die head body 401. Hydraulic components 700 for pushing and pulling the sleeve 501 are provided at the upper and lower ends of the die head body 401. A first discharge port 4011 and a second discharge port 4012 are opened at equal intervals inside the die head body 401. An isolation cylinder 402 for sealing the connection between the die head body 401 and the extruder body 100 is also movably connected inside the die head body 401.

[0043] Several cylindrical blocks 502 are fixedly mounted at equal intervals inside the sleeve 501. The upper and lower parts of the cylindrical blocks 502 are fixedly connected to a three-way pipe 503. The air pump 300 pumps gas into the cylindrical blocks 502 through the first set of three-way pipes 503, and pushes the push rod 604 and elastic rod 605 movably connected inside the cylindrical blocks 502 to move, thereby pushing out the residual raw materials inside the first discharge port 4011 and the second discharge port 4012 respectively.

[0044] After the first set of cylindrical blocks 502 has cleaned the corresponding first discharge port 4011 and second discharge port 4012, the air pump 300 connects to the next set of three-way pipes 503, the isolation plate 506 and the next set of three-way pipes 503, and pumps gas into the next set of cylindrical blocks 502, and pushes the push rod 604 and elastic rod 605 inside the next set of cylindrical blocks 502 to move.

[0045] Using the above scheme, the die head body 401 is sealed by the rotation of the isolation cylinder 402. After the material inside the isolation cylinder 402 is squeezed out by the sleeve 501 driven by the hydraulic component 700, the air pump 300 injects gas into the cylindrical block 502 through the three-way pipe 503, pushing the push rod 604 to squeeze out the material in the first discharge port 4011. At this time, the elastic column 602 will move with the push rod 604 to the end of the J-shaped groove 603, and under the action of the internal pressure of the cylindrical block 502, it will be stuck into the circular hole 6031. At the same time, the elastic column 602 releases the fixation of the hook 601. At this time, the pressure inside the cylindrical block 502 will push the elastic rod 605 to completely squeeze out the remaining material in the second discharge port 4012. When the cam on the push rod 604 slides to the end of the J-shaped groove 603, it will also cause the partition plate 506 to rotate and connect the three-way pipes 503 on both sides through the guide hole 5061. At this time, the piston column 504 can enter the next cylindrical block 502 and repeat the above process until all the raw materials inside the die head body 401 are completely removed.

[0046] like Figures 1-7 and Figures 9-11 As shown, the mold head assembly 400 also includes two sets of pressure blocks 403 movably connected inside the mold head body 401 and located above and below the isolation cylinder 402 respectively, and a long plate 407 movably connected inside the pressure blocks 403. A screw 404 threadedly connected to the mold head body 401 is movably engaged at one end of the long plate 407. A worm gear 405 is movably engaged inside the mold head body 401. A sealing block 406 is threadedly connected to one end of the mold head body 401.

[0047] A connecting plate 702 is sleeved on one end of the sleeve 501 outside the die head body 401. Hydraulic rods 701 for pushing and pulling the connecting plate 702 are fixed at the upper and lower ends of the die head body 401. The worm gear 405 rotates to drive the isolation cylinder 402 to rotate ninety degrees, and the screw 404 rotates to push the long plate 407 to move.

[0048] The die head assembly 400 also includes two sets of pressure blocks 403 located above and below the isolation cylinder 402 and respectively connected to the inside of the die head body 401, and a long plate 407 connected to the inside of the pressure blocks 403. A screw 404 threadedly connected to the die head body 401 is movably engaged at one end of the long plate 407. A worm gear 405 is movably engaged inside the die head body 401. A sealing block 406 is threadedly connected to one end of the die head body 401.

[0049] A connecting plate 702 is sleeved on one end of the sleeve 501 outside the die head body 401. Hydraulic rods 701 for pushing and pulling the connecting plate 702 are fixed at the upper and lower ends of the die head body 401. The worm gear 405 rotates to drive the isolation cylinder 402 to rotate ninety degrees, and the screw 404 rotates to push the long plate 407 to move.

[0050] Pins are equidistantly arranged at both ends of the long plate 407, and guide grooves 4031 are equidistantly opened on the inner walls of both sides of the pressure block 403. The movement of the long plate 407 causes the pins to move along the inner wall of the guide groove 4031, and causes the pressure block 403 to move towards each other, pushing the raw material remaining in the round hole of the isolation cylinder 402 and the long groove into the interior of the isolation cylinder 402.

[0051] Using the above scheme, before operating the hydraulic assembly 700, the worm gear 405 is rotated first to rotate the isolation cylinder 402 counterclockwise by 90 degrees, thereby isolating the die head body 401 from the extruder body 100. Then, the two screws 404 are rotated to move the two pressure blocks 403 towards each other, pushing the residual material in the circular hole and long groove of the isolation cylinder 402 into the interior of the isolation cylinder 402. At the same time, the sealing block 406 is opened. Then, the operator operates the hydraulic rod 701, which drives the sleeve 501 through the connecting plate 702 to discharge the residual material in the isolation cylinder 402 in the die head body 401 through the hole at the sealing block 406 and the first discharge port 4011 and the second discharge port 4012.

[0052] like Figures 2-5 and Figures 8-13 As shown, the 503 tee pipe is divided into a main pipe and a side pipe;

[0053] Piston column 504 is movably connected in the main pipe, first slide groove 5041 and second slide groove 5042 are interconnected and opened on piston column 504;

[0054] Elastic block 505 is elastically and movably connected in the side pipe;

[0055] A set of symmetrical ball bearings 5043 is also movably connected to the end of the piston column 504 facing the isolation plate 506. The end of the piston column 504 facing the isolation plate 506 is chamfered. When the piston column 504 moves, one end of the elastic block 505 will be stuck in the first sliding groove 5041. At this time, the main pipe is connected to the inside of the cylindrical block 502 through the side pipe.

[0056] When the piston rod 504 slides into the next tee pipe 503, the first groove 5041 will release the fixation on one end of the elastic block 505, and under the action of the gas pressure inside the cylindrical block 502, push the elastic block 505 to seal the side pipe of the tee pipe 503, so as to ensure the sealing inside the previous set of cylindrical blocks 502. At this time, one end of the previous set of elastic blocks 505 coincides with the second groove 5042 in cross section.

[0057] Using the above scheme, when the air pump 300 pumps gas into the three-way pipe 503, it will push the piston column 504 to squeeze the elastic block 505 and retract it into the side pipe. During the movement of the piston column 504, one end of the elastic block 505 will be stuck in the first sliding groove 5041, so that the elastic block 505 keeps its relative position unchanged. When the piston column 504 enters the next three-way pipe 503, the elastic block 505 in the previous three-way pipe 503 will be squeezed by the gas inside the cylindrical block 502 to keep the side pipe sealed. At the same time, since the two ends of the elastic block 505 are conical, the pressure in the main pipe needs to be greater than the internal pressure of the cylindrical block 502 to push the elastic block 505 to move.

[0058] The ball bearing 5043 is designed to reduce friction between the isolation plate 506 and the piston rod 504 when the isolation plate 506 rotates;

[0059] When the device needs to be reset, the air pump 300 is activated to extract the gas inside the three-way pipe 503. At this time, the inside of several three-way pipes 503 is under negative pressure, and the side pipe sections of the three-way pipes 503 are kept sealed. During the reset process, the piston column 504 will cause one end of the elastic block 505 to be stuck in the second slide groove 5042. As the piston column 504 slides, one end of the elastic block 505 will slide from the second slide groove 5042 to the first slide groove 5041. At this time, the side pipe section of the three-way pipe 503 is opened, and the gas inside the cylindrical block 502 is discharged through the side pipe and the three-way pipe 503. At the same time, the advancing component 600 inside the cylindrical block 502 is reset. Then, one end of the elastic block 505 disengages from the first slide groove 5041 and enters the next three-way pipe 503. This cycle continues until the device is reset.

[0060] like Figures 3-4 , Figures 7-10 and Figure 13 As shown, the progressive component 600 includes a push rod 604 movably connected inside the cylindrical block 502. The push rod 604 is elastically and movably connected to an elastic rod 605. One end of the elastic rod 605 is fixedly connected to a hook 601. One end of the push rod 604 is elastically and movably connected to an elastic post 602. J-shaped grooves 603 and first straight grooves 5021 are respectively opened on the partition plate 506 and the cylindrical block 502. One end of the J-shaped groove 603 is provided with a round hole 6031.

[0061] One end of the hook 601 has a notch, and the middle part of the elastic post 602 has a groove that is misaligned with the notch of the hook 601. The elastic post 602 is used to fix and snap into the hook 601 to keep the relative position of the push rod 604 and the elastic rod 605 unchanged.

[0062] When the hook 601 slides to be concentric with the cross section of the circular hole 6031, the gas pressure inside the cylindrical block 502 will push one end of the hook 601 into the circular hole 6031, and make the notch on the hook 601 coincide with the groove on the elastic column 602. At this time, the gas pressure inside the cylindrical block 502 will push the elastic rod 605 to squeeze out the residual material in the second discharge port 4012.

[0063] By adopting the above solution, by misaligning the notch of the hook 601 with the groove on the elastic column 602, it is ensured that after the push rod 604 completely squeezes out the raw material in the first discharge port 4011, the groove on the elastic column 602 can then coincide with the notch on the hook 601 to release the fixation on the elastic rod 605, and be used to push the elastic rod 605 to squeeze out the raw material inside the second discharge port 4012.

[0064] Working principle and usage process of this invention:

[0065] When the extruder body 100 is stopped in an emergency, the heat pipe 200 will transfer the heat from the extruder body 100 to the die body 401, keeping the raw material inside the die body 401 in a molten state. Then, the operator first rotates the worm gear 405 to rotate the isolation cylinder 402 counterclockwise by 90 degrees to seal the die body 401. Then, the two screws 404 are rotated to make the pins on both sides of the screws 404 slide along the guide groove 4031, thereby causing the two pressure blocks 403 to move towards each other and push the raw material remaining in the circular hole and long groove of the isolation cylinder 402 into the inner wall of the isolation cylinder 402. At the same time, the sealing block 406 is opened. Then, the operator operates the hydraulic rod 701, which drives the sleeve 501 through the connecting plate 702 to discharge the residual raw material in the isolation cylinder 402 in the die body 401 through the hole at the sealing block 406 and the first discharge port 4011 and the second discharge port 4012.

[0066] After the sleeve 501 expels the raw material from the isolation cylinder 402, the operator operates the air pump 300 to pump gas into the two three-way pipes 503 of the first group, and pushes the piston column 504 to move, so that one end of the elastic block 505 is engaged in the first sliding groove 5041, and the pumped gas will flow as shown in the attached image. Figure 8 and 11The black arrow indicates that the push rod 604 enters the cylindrical block 502 and pushes one end of the push rod 604 through the sleeve 501 and the isolation cylinder 402 into the first discharge port 4011. When the push rod 604 completely squeezes the material in the first discharge port 4011 through the second discharge port 4012, the elastic column 602 will move with the push rod 604 to the end of the J-shaped groove 603 and, under the pressure inside the cylindrical block 502, will be stuck into the round hole 6031. At this time, the recessed part on the elastic column 602 will overlap and disengage with the hook 601. In addition to fixing the hook 601, the elastic rod 605 is pushed to move under the pressure inside the cylindrical block 502, and the remaining material in the second discharge port 4012 is completely removed. At the same time, when the convex shaft on the push rod 604 slides to the end of the J-shaped groove 603, it will also cause the partition plate 506 to rotate and the three-way pipes 503 on both sides to connect through the guide hole 5061. At this time, the piston rod 504 can enter the next cylindrical block 502 and repeat the above process until all the raw materials inside the die head body 401 are completely removed.

[0067] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0068] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nylon raw material extrusion device, comprising an extruder body (100) and an air pump (300) fixedly installed thereon, characterized in that, Also includes: A die assembly (400) is disposed at one end of the extruder body (100); Cleaning component (500), which is movably mounted inside the mold head component (400); A progressive component (600) is located inside the cleanup component (500); The extruder body (100) is fixedly mounted with a die head body (401) at one end. A sleeve (501) is sleeved inside the die head body (401). Hydraulic components (700) for pushing and pulling the sleeve (501) are provided at the upper and lower ends of the die head body (401). A first discharge port (4011) and a second discharge port (4012) are equally spaced inside the die head body (401). An isolation cylinder (402) for sealing the connection between the die head body (401) and the extruder body (100) is also movably connected inside the die head body (401). The sleeve (501) is fitted with several cylindrical blocks (502) at equal intervals inside. The upper and lower parts of the cylindrical blocks (502) are fixedly connected to a three-way pipe (503). The air pump (300) pumps gas into the cylindrical blocks (502) through the first set of three-way pipes (503) and pushes the push rod (604) and elastic rod (605) movably connected inside the cylindrical blocks (502) to push out the residual raw materials inside the first discharge port (4011) and the second discharge port (4012) respectively. After the first set of cylindrical blocks (502) has cleaned the corresponding first discharge port (4011) and second discharge port (4012), the air pump (300) is connected to the next set of three-way pipes (503), the isolation plate (506) and the next set of three-way pipes (503), and pumps gas into the next set of cylindrical blocks (502), and pushes the push rod (604) and elastic rod (605) inside the next set of cylindrical blocks (502) to move.

2. The nylon raw material extrusion equipment according to claim 1, characterized in that: The mold head assembly (400) also includes two sets of pressure blocks (403) movably connected inside the mold head body (401) and located above and below the isolation cylinder (402) respectively, and a long plate (407) movably connected inside the pressure blocks (403), and a screw (404) threadedly connected to the mold head body (401) is movably engaged at one end of the long plate (407); The mold head body (401) is internally connected to a worm gear (405); A sealing block (406) is threadedly connected to one end of the mold head body (401); The sleeve (501) is fitted with a connecting plate (702) at one end outside the die head body (401). The upper and lower ends of the die head body (401) are fixed with hydraulic rods (701) for pushing and pulling the connecting plate (702). The worm gear (405) rotates to drive the isolation cylinder (402) to rotate 90 degrees. The screw (404) rotates to push the long plate (407) to move.

3. The nylon raw material extrusion equipment according to claim 2, characterized in that: The extruder body (100) is fixedly connected to a heat-conducting pipe (200) for inputting heat from the extruder body (100) to the die body (401). The isolation cylinder (402) is provided with two sets of round holes and one set of feed grooves at equal intervals, and the included angle between the three is ninety degrees. The upper pressure block (403) is an equidistant cylinder facing the isolation cylinder (402), and the lower pressure block (403) is an arc surface facing the isolation cylinder (402). The two sets of pressure blocks (403) move towards each other until they are in contact with the inner wall of the isolation cylinder (402).

4. The nylon raw material extrusion equipment according to claim 3, characterized in that: The long plate (407) has pins at equal intervals at both ends, and guide grooves (4031) are equally spaced on the inner walls of both sides of the pressure block (403). The movement of the long plate (407) causes the pins to move along the inner wall of the guide groove (4031), and causes the pressure blocks (403) to move towards each other, pushing the raw materials remaining in the round hole of the isolation cylinder (402) and the long groove into the interior of the isolation cylinder (402).

5. The nylon raw material extrusion equipment according to claim 1, characterized in that: The tee pipe (503) is divided into a main pipe and a side pipe; The piston rod (504) is movably connected in the main pipe. The first slide groove (5041) and the second slide groove (5042) are interconnected and are formed on the piston rod (504); The elastic block (505) is elastically and movably connected in the side pipe; The piston rod (504) is also movably connected to a set of symmetrical ball bearings (5043) at one end facing the isolation plate (506). The piston rod (504) has a chamfer at one end facing the isolation plate (506). When the piston rod (504) moves, one end of the elastic block (505) will be inserted into the first groove (5041). At this time, the main pipe is connected to the inside of the cylindrical block (502) through the side pipe.

6. The nylon raw material extrusion equipment according to claim 1, characterized in that: The progressive component (600) includes a push rod (604) movably connected inside the cylindrical block (502). The push rod (604) is elastically and movably connected to an elastic rod (605). One end of the elastic rod (605) is fixedly connected to a hook (601). One end of the push rod (604) is elastically and movably connected to an elastic column (602). The isolation plate (506) and the cylindrical block (502) are respectively provided with a J-shaped groove (603) and a first straight groove (5021). One end of the J-shaped groove (603) is provided with a round hole (6031).

7. The nylon raw material extrusion equipment according to claim 6, characterized in that: One end of the push rod (604) is provided with a set of symmetrical convex shafts, which are respectively inserted into the J-shaped groove (603) and the first straight groove (5021). The gas inside the cylindrical block (502) will push the push rod (604) to squeeze out the residual raw material inside the first discharge port (4011). After the convex shaft on the push rod (604) slides into the hook-shaped part of the J-shaped groove (603), it will squeeze the inner wall of this part and make the partition plate (506) rotate, and make the guide hole (5061) opened on the partition plate (506) connect with the three-way pipes (503) on both sides. At this time, the piston rod (504) can enter the next three-way pipe (503) through the guide hole (5061).

8. The nylon raw material extrusion equipment according to claim 7, characterized in that: One end of the hook (601) has a notch, and the middle part of the elastic post (602) has a groove that is misaligned with the notch of the hook (601). The elastic post (602) is used to fix and snap into the hook (601) to keep the relative positions of the push rod (604) and the elastic rod (605) unchanged.

9. The nylon raw material extrusion equipment according to claim 8, characterized in that: When the hook (601) slides to be concentric with the cross section of the circular hole (6031), the gas pressure inside the cylindrical block (502) will push one end of the hook (601) into the circular hole (6031) and make the notch on the hook (601) coincide with the groove on the elastic column (602). At this time, the gas pressure inside the cylindrical block (502) will push the elastic rod (605) to squeeze out the residual material in the second discharge port (4012).

10. The nylon raw material extrusion equipment according to claim 7, characterized in that: When the piston rod (504) slides into the next tee pipe (503), the first groove (5041) will release the fixation on one end of the elastic block (505) and push the elastic block (505) to seal the side pipe of the tee pipe (503) under the action of the gas pressure inside the cylindrical block (502), so as to ensure the sealing inside the previous set of cylindrical blocks (502). At this time, one end of the previous set of elastic blocks (505) coincides with the second groove (5042) in cross section.

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