A modified plastic processing extrusion device

Abstract

The present application relates to the technical field of polymer processing equipment, and in particular to a modified plastic processing extrusion device, comprising a fixed plate, a barrel connected to the fixed plate, and an extrusion nozzle on the side of the barrel away from the fixed plate; a frame, the frame is connected to the fixed plate; a conical centrifugal cylinder with a feed inlet, the conical centrifugal cylinder is located in an installation cavity, and the conical centrifugal cylinder is rotatably connected to the fixed plate and the frame; a conical follower core, the conical follower core is coaxially arranged in the inner cavity of the conical centrifugal cylinder, and the conical follower core reciprocates along the axial direction of the barrel; an extrusion column head, the extrusion column head is coaxially connected to the conical follower core, the extrusion column head can extend into and be slidably connected to the inner wall of the barrel; a material heating unit, the material heating unit is connected to the conical centrifugal cylinder and / or the conical follower core; the present application has the effect of reducing the possibility of melt fracture of the material and reducing the time the material stays in the barrel to improve the molding quality of the product.

Description

Technical Field

[0001] The present application relates to the technical field of polymer processing equipment, and in particular to a modified plastic processing extrusion device. Background Art

[0002] An insulating layer or sheath is usually provided on the outer wall of the cable conductor to provide insulation and protection. Low-smoke halogen-free flame-retardant cables do not contain halogen, lead, chromium, cadmium, mercury and other elements in their insulating layer or sheath, and do not emit toxic smoke when burned. They have the advantages of good flame retardancy and low smoke emission, and are widely used in important or crowded places such as subways, high-rise buildings, shopping malls, theaters, power stations, etc.

[0003] The formula of low-smoke halogen-free cable material is generally based on EVA as the base material and then filled with a large amount of magnesium hydroxide, aluminum hydroxide flame retardant and a small amount of compatibilizer, lubricant, cross-linking sensitive agent, antioxidant, surfactant, etc. Since a large amount of metal hydroxide is not meltable, the viscosity of low-smoke halogen-free flame retardant cable material is very high during the extrusion process, and the components of the cable material cannot be fully fused. Therefore, the requirements for the extrusion equipment are relatively high. The prior art discloses a centrifugal polyethylene extruder, which includes a feeding device, a barrel, a screw and a mechanism. The feeding device is set as a circular The feeding drum is conical, and an inner core is connected in the middle of the feeding drum. The feeding drum and the inner core rotate synchronously under the drive of an external motor. The upper end of the feeding drum is set as a feeding port, and the lower end of the feeding drum is rotatably connected with an inverted cone-shaped feeding sleeve. Heaters are connected to the outer walls of the feeding drum and the feeding sleeve. A spiral guide groove is opened on the inner wall of the feeding sleeve. The bottom of the feeding sleeve is used to communicate with the material inlet of the barrel, and the material inlet of the barrel corresponds to the melting section of the screw. The cone angle of the conical feeding drum is less than 120°, and the screw is only provided with a melting section and a homogenizing section.

[0004] With regard to the above-mentioned related technologies, during the extrusion operation, the feeding drum rotates, and the material moves toward the side of the feeding sleeve driven by centrifugal force, gravity and the reaction force applied to the material by the feeding drum, and then enters the barrel. However, it is still necessary to use the screw for insulation, homogenization and spiral propulsion before it can be injected into the molding mold through the injection nozzle, resulting in a long heating time for the material. Melt fracture is also prone to occur during the spiral propulsion process. Moreover, the material inside the barrel cannot be injected all at once, and the retained material will also decompose, which has a great impact on the molding quality of the cable product. Summary of the invention

[0005] In order to reduce the possibility of melt fracture of the material and reduce the time the material stays in the barrel to improve the molding quality of the product, the present application provides a modified plastic processing extrusion device.

[0006] The modified plastic processing extrusion device provided in this application adopts the following technical solution:

[0007] A modified plastic processing extrusion device, comprising:

[0008] A fixed plate, the fixed plate being connected to a barrel, the barrel having an extrusion nozzle on a side away from the fixed plate;

[0009] A frame, the frame is connected to the fixing plate, and a mounting cavity is formed between the frame and the fixing plate;

[0010] A conical centrifugal cylinder, the conical centrifugal cylinder is located in the installation cavity, and the conical centrifugal cylinder is rotatably connected to the fixed plate and the frame, the conical centrifugal cylinder is coaxially arranged with the barrel, and a feed port is opened on the conical centrifugal cylinder;

[0011] A conical follower core, the conical follower core is coaxially arranged in the inner cavity of the conical centrifugal barrel, and a processing cavity is formed between the conical centrifugal barrel and the conical follower core, the inner cavity of the barrel is connected with the processing cavity, and the conical follower core reciprocates along the axial direction of the barrel;

[0012] An extrusion column head, the extrusion column head is coaxially connected to the side of the conical follower core close to the barrel, and the extrusion column head can extend into and be slidably connected to the inner wall of the barrel;

[0013] A material heating unit for heating the material in the processing chamber is connected to the conical centrifugal cylinder and / or the conical follower core.

[0014] By adopting the above technical scheme, the material heating unit heats the conical centrifugal cylinder and / or the conical follower core, and then feeds the material into the conical centrifugal cylinder through the feed port. Since the conical centrifugal cylinder keeps rotating at a high speed, the material entering the conical centrifugal cylinder moves toward the side of the fixed plate under the action of centrifugal force. At the same time, the material heating unit transfers heat to the material through heat exchange, so that the material remains in a molten state. Due to the action of centrifugal force, the molten material enters between the conical follower core and the fixed plate through the processing cavity, and then enters the barrel. At this time, force is applied to the conical follower core, so that the conical follower core drives the extrusion column head to move toward the side of the fixed plate. The extrusion column head cooperates with the barrel and injects the molten material in the barrel into the molding mold through the extrusion nozzle. When the conical follower core slides toward the side of the fixed plate, the distance between the conical centrifugal cylinder and the conical follower core increases, and the molten material is affected. The influence of centrifugal force is attached to the conical centrifugal barrel, and the molten material between the conical follower core and the fixed plate flows back into the processing cavity, thereby improving the homogenization rate between the molten materials in the inner cavity of the conical centrifugal barrel; a modified plastic processing extrusion device is designed, which is convenient for forming an installation foundation for installing the barrel, the conical centrifugal barrel and the conical follower core through the fixed plate and the frame, and the possibility of injury to people after the conical centrifugal barrel is detached can be avoided through the frame. The conical centrifugal barrel and the conical follower core can cooperate to form a centrifugal drive structure for heating the molten material and providing a flow power source for the material, and can also reduce the shearing of the molten material at the same time, reducing the possibility of material melt rupture, and the extrusion column head can reduce the shearing effect while extruding all the molten materials in the barrel through the extrusion nozzle at one time, reducing the time the material stays in the barrel to improve the molding quality of the product.

[0015] In a specific possible implementation manner, the conical follower core is rotatably connected to the frame, and the extrusion column head is rotatably connected to the conical follower core.

[0016] By adopting the above technical scheme, a conical follower core rotatably connected to the frame is designed. First, it can maintain a certain rotation speed under the action of the molten material driven by the rotation of the conical centrifugal barrel, thereby reducing the speed difference between the conical follower core and the conical centrifugal barrel. While achieving homogenization of the molten material, the speed difference allows the molten material to form a kneading effect in the processing chamber, so that the molten material can fully contact the heating unit, which can improve the efficiency of the material heating unit in transferring heat to the molten material. As the conical follower core moves toward one side of the barrel, the driving effect of the molten material on the conical follower core will be reduced, thereby reducing the rotation speed of the conical follower core, making it easier to insert the extrusion column head into the barrel.

[0017] In a specific possible implementation manner, a plurality of homogenizing strips are connected to the outer peripheral side of the conical follower core, the homogenizing strips are located in the gap between the conical centrifugal cylinder and the conical follower core, and the homogenizing strips are staggered with the conical centrifugal cylinder.

[0018] By adopting the above technical scheme, the designed homogenizing bar can improve the homogenizing effect of the molten material in the processing chamber under the drive of the conical follower core that maintains a certain rotation speed. At the same time, when the conical follower core moves toward the side of the fixed plate, the distance between the homogenizing bar and the inner wall of the conical centrifugal cylinder increases, thereby reducing the contact degree between the homogenizing bar and the molten material in the processing chamber, thereby reducing the rotation speed of the conical follower core, and reducing the centrifugal force applied by the conical follower core to the molten material between the conical follower core and the fixed plate, so as to reduce the speed at which the molten material between the conical follower core and the fixed plate returns to the processing chamber.

[0019] In a specific possible implementation mode, the barrel is slidably connected to the fixed plate, an adjustment unit is provided on the side of the fixed plate away from the conical centrifugal barrel, the adjustment unit is connected to the barrel for driving the barrel to slide, and a plurality of overflow holes are provided on the side of the barrel close to the conical follower core, and the inner cavity of the barrel is connected to the inner cavity of the conical centrifugal barrel through the overflow holes.

[0020] By adopting the above technical solution, a barrel is designed with an overflow hole and slidably connected to a fixed plate. The single extrusion amount of molten material can be adjusted on the premise of emptying the molten material in the barrel, so as to adapt to products with different injection molding weights. The position of the barrel can be adjusted by the adjustment unit, thereby changing the distance by which the barrel extends into the fixed plate.

[0021] In a specific embodiment, the regulating unit comprises:

[0022] A fixed cylinder, the fixed cylinder is sleeved on the outer peripheral side of the barrel, and the fixed cylinder is connected to the fixed plate;

[0023] A stress ring, the stress ring is connected to the barrel, and the stress ring is located between the fixed barrel and the barrel;

[0024] A plurality of adjusting screws are provided, wherein the adjusting screws are rotatably connected to the fixing tube, and the adjusting screws are threadedly connected to the force ring.

[0025] By adopting the above technical solution, the designed adjustment unit can increase or decrease the length of the barrel extending into the inner cavity of the conical centrifugal barrel through the cooperation of the fixed barrel, the force ring and the adjusting screw, thereby realizing the adjustment of the single molten material extrusion amount.

[0026] In a specific implementation manner, heat-insulating cotton is filled between the fixed cylinder and the machine cylinder.

[0027] By adopting the above technical solution, the designed thermal insulation cotton can reduce the heat exchange rate between the barrel and the external environment, thereby ensuring the temperature of the molten material inside the barrel.

[0028] In a specific possible implementation manner, the extrusion column head has an introduction chamfered section on a side close to the barrel, and the outer diameter of the introduction chamfered section is smaller than the inner diameter of the barrel.

[0029] By adopting the above technical solution, the extrusion column head with the introduction chamfered section can be easily inserted into the barrel, and can facilitate the molten material to flow back from the barrel to the inner cavity of the conical centrifugal barrel through the overflow hole.

[0030] In a specific possible implementation manner, the conical follower core is hollow.

[0031] By adopting the above technical solution, the hollow conical follower core is designed to reduce the inertia of the conical follower core, and then after the conical follower core slides toward one side of the fixed plate, the rotation speed of the conical follower core can be quickly reduced, and the strength requirement for the unilateral rotating sliding support shaft of the conical follower core can also be reduced.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] A modified plastic processing extrusion device is designed. A mounting base for mounting a barrel, a conical centrifugal barrel and a conical follower core is formed by a fixing plate and a frame. The frame can also avoid the possibility of injury to people after the conical centrifugal barrel is detached. The conical centrifugal barrel and the conical follower core cooperate to form a centrifugal drive structure for heating molten materials and providing a flow power source for the materials. The shearing of molten materials can be reduced at the same time, and the possibility of melt rupture of the materials can be reduced. The extrusion column head can reduce the shearing effect while extruding all the molten materials in the barrel through the extrusion nozzle at one time, thereby reducing the time the materials stay in the barrel to improve the molding quality of the products.

[0034] A modified plastic processing extrusion device is designed. The device can improve the homogenization effect of the molten material in the processing chamber when driven by a conical follower core that maintains a certain rotation speed. At the same time, when the conical follower core moves toward one side of a fixed plate, the distance between the homogenization bar and the inner wall of the conical centrifugal cylinder increases, thereby reducing the contact degree between the homogenization bar and the molten material in the processing chamber, thereby reducing the rotation speed of the conical follower core, and reducing the centrifugal force applied by the conical follower core to the molten material between the conical follower core and the fixed plate, so as to reduce the speed at which the molten material between the conical follower core and the fixed plate returns to the processing chamber.

[0035] A modified plastic processing extrusion device is designed. Through a barrel with an overflow hole and slidably connected to a fixed plate, the single extrusion amount of molten material can be adjusted on the premise of emptying the molten material in the barrel, so as to adapt to products with different injection molding weights. The position of the barrel can be adjusted through an adjustment unit, thereby changing the distance by which the barrel extends into the fixed plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a modified plastic processing extrusion device according to an embodiment of the present application.

[0037] Figure 2 yes Figure 1 A schematic diagram from another perspective, mainly used to show the conical centrifuge cylinder and the material heating unit.

[0038] Figure 3 yes Figure 2 sectional view of .

[0039] Figure 4 yes Figure 3 Schematic diagram of the structure after the middle cone-shaped follower core is hollowed out.

[0040] Figure 5 is Figure 4 Schematic diagram of the structure after adding a averaging strip on the basis of .

[0041] Figure 6 is Figure 5 Schematic diagram of the structure after adding an adjustment unit on the basis of.

[0042] Figure 7 yes Figure 6 The enlarged view of part A is mainly used to show the specific structure of the adjustment unit.

[0043] Figure 8 yes Figure 6 Schematic diagram of the extrusion state in which the extrusion column is fully extended into the inner cavity of the barrel.

[0044] Explanation of the reference numerals: 1. fixed plate; 2. barrel; 21. overflow hole; 3. frame; 4. conical centrifugal barrel; 41. feed inlet; 5. conical follower core; 51. homogenizing strip; 6. extrusion column head; 7. material heating unit; 8. adjusting unit; 81. fixed barrel; 82. force ring; 83. adjusting screw; 84. thermal insulation cotton; 9. rotation drive unit. DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-8 This application is described in further detail.

[0046] The embodiment of the present application discloses a modified plastic processing extrusion device.

[0047] Reference Figure 1 A modified plastic processing extrusion device includes a fixed plate 1, a barrel 2 and a frame 3. The barrel 2 is connected to the fixed plate 1, and the barrel 2 has an extrusion nozzle on the side away from the fixed plate 1. The frame 3 is welded and fixed to the fixed plate 1, and the frame 3 is located on the side of the fixed plate 1 away from the extrusion nozzle, and an installation cavity is formed between the frame 3 and the fixed plate 1.

[0048] Reference Figure 2 and Figure 3 In order to complete the melting and extrusion of the material, a modified plastic processing and extrusion device also includes a conical centrifugal barrel 4, a conical follower core 5, an extrusion column head 6 and a material heating unit 7. The conical centrifugal barrel 4 is located in the installation cavity, and the two ends of the conical centrifugal barrel 4 are rotatably connected to the fixed plate 1 and the frame 3 respectively. The barrel diameter of the conical centrifugal barrel 4 gradually increases from the side of the fixed plate 1 to the side of the extrusion nozzle. The conical centrifugal barrel 4 is coaxially arranged with the barrel 2, and a feed port 41 is provided on the end plate of the conical centrifugal barrel 4 away from the fixed plate 1. In the present application, the cone angle of the conical centrifugal barrel 4 can be 100°, 120°, or 130°. In the present embodiment, in order to achieve a balance between the material heating and melting time, the rotation speed of the conical centrifugal barrel 4, and the material extrusion force, the cone angle of the conical centrifugal barrel 4 is preferably 120°. In the present application, the axis of the conical centrifugal barrel 4 can be horizontally arranged or vertically arranged. In the present embodiment, it is preferably horizontally arranged.

[0049] Reference Figure 2 In the present application, the rotation drive unit 9 of the conical centrifugal cylinder 4 includes a drive motor and an annular rack. The drive motor is bolted to the fixed plate 1, the annular rack is sleeved and connected to the conical centrifugal cylinder 4, and a drive gear is coaxially keyed on the output shaft of the drive motor. The drive gear is meshed with the annular rack to realize the rotation of the conical centrifugal cylinder 4.

[0050] Reference Figure 3 The conical follower core 5 is located in the inner cavity of the conical centrifugal cylinder 4, and the conical follower core 5 is coaxially arranged with the conical centrifugal cylinder 4, the cone surface angle of the conical follower core 5 is consistent with the cone surface angle of the conical centrifugal cylinder 4, and a processing cavity is formed between the conical centrifugal cylinder 4 and the conical follower core 5. The material enters through the feeding port and is melted and homogenized in the processing cavity; the inner cavity of the barrel 2 is connected with the processing cavity, and the conical follower core 5 is slidably connected with the frame 3 through a connecting shaft, the connecting shaft is arranged through the feed port 41, and the connecting shaft is staggered with the conical centrifugal cylinder 4 along its own radial direction, and the conical follower core 5 slides back and forth along the axial direction of the barrel 2, thereby driving the extrusion column head 6 to repeatedly enter the barrel 2, and repeatedly complete the extrusion action.

[0051] Reference Figure 2 and Figure 3In the present application, a feeding hydraulic cylinder is connected to the side of the frame 3 away from the fixed plate 1, a turntable is rotatably connected to the piston rod of the feeding hydraulic cylinder, a connecting shaft is connected to the turntable, and the turntable is driven to move along the axis direction of the barrel 2 by the extension and retraction of the piston rod of the feeding hydraulic cylinder. The turntable drives the conical follower core 5 to slide along the axis direction of the barrel 2 through the connecting shaft, and drives the extrusion column head 6 to extend into the barrel 2 to complete the extrusion operation of the molten material.

[0052] Reference Figure 3 The extrusion column head 6 is coaxially connected to the side of the conical follower core 5 close to the extrusion nozzle, and the extrusion column head 6 can extend into and be slidably connected with the inner wall of the barrel 2. In order to facilitate the extrusion column head 6 to extend into the inner cavity of the barrel 2, the side of the extrusion column head 6 close to the extrusion nozzle has an introduction chamfered section, and the outer diameter of the introduction chamfered section is smaller than the inner hole of the barrel 2. In the present application, the introduction chamfered section can be chamfered at a right angle or at a rounded angle. In the present embodiment, the introduction chamfered section is preferably chamfered at a right angle.

[0053] Reference Figure 3 The material heating unit 7 is used to heat the material in the processing chamber. In the present application, the material heating unit 7 is a commonly used cast copper heater or a mica heater, or it can be other heating equipment that can meet the requirements. The material heating unit 7 can be installed separately on the outer wall of the conical centrifugal barrel 4, or it can be installed separately inside the conical follower core 5, or it can be installed on the conical centrifugal barrel 4 and the conical follower core 5 at the same time. In the present embodiment, the material heating unit 7 is installed separately on the outer wall of the conical centrifugal barrel 4.

[0054] Reference Figure 4 In order to achieve homogenization of the material while heating and melting the material, and to reduce melt fracture caused by excessive shear rate, the conical follower core 5 is rotatably connected to the frame 3, and the extrusion column head 6 is rotatably connected to the conical follower core 5; under the action of the molten material driven by the rotation of the conical centrifugal cylinder 4, a certain rotation speed is maintained, thereby reducing the speed difference between the conical follower core 5 and the conical centrifugal cylinder 4, while achieving homogenization of the molten material, the efficiency of heat transfer of the material heating unit 7 to the molten material can be improved.

[0055] Reference Figure 4 In order to reduce the inertia of the conical follower core 5, so that after the conical follower core 5 slides toward one side of the fixed plate 1, the rotation speed of the conical follower core 5 can be quickly reduced, and the strength requirement for the unilateral rotation sliding support shaft of the conical follower core 5, that is, the connecting shaft, can be reduced, the conical follower core 5 is hollow.

[0056] Reference Figure 5In order to further improve the homogenization efficiency of the molten material, a plurality of homogenizing strips 51 are welded and fixed on the outer peripheral side of the conical follower core 5, and the homogenizing strips 51 are located in the gap between the conical centrifugal cylinder 4 and the conical follower core 5, and the homogenizing strips 51 and the conical centrifugal cylinder 4 are staggered. Through the homogenizing strips 51, the homogenization effect of the molten material in the processing chamber can be improved under the driving of the conical follower core 5 which maintains a certain rotation speed. At the same time, when the conical follower core 5 moves toward the side of the fixed plate 1, the distance between the homogenizing strips 51 and the inner wall of the conical centrifugal cylinder 4 increases, thereby reducing the contact degree between the homogenizing strips 51 and the molten material in the processing chamber, realizing the reduction of the rotation speed of the conical follower core 5, so that the centrifugal force applied by the conical follower core 5 to the molten material between the conical follower core 5 and the fixed plate 1 is reduced, so as to reduce the speed at which the molten material between the conical follower core 5 and the fixed plate 1 returns to the processing chamber.

[0057] Reference Figure 6 , Figure 7 as well as Figure 8 , the extrusion column head 6 extends into the barrel 2 to extrude the molten material in the barrel 2 into the molding mold through the extrusion nozzle. In order to reduce the molten material retained in the barrel 2 after a single extrusion and improve the quality of the molded product, the extrusion column head 6 will be extended to the bottom wall side of the barrel 2 close to the extrusion nozzle. At this time, in order to be able to adjust the single extrusion amount of the molten material under the premise of emptying the molten material in the barrel 2, so as to adapt to products with different injection molding weights, the barrel 2 is slidably connected to the fixed plate 1, and the sliding direction of the barrel 2 is consistent with its own axial direction. An adjusting unit 8 is provided on the side of the fixed plate 1 away from the conical centrifugal barrel 4. The adjusting unit 8 is connected to the barrel 2 for driving the barrel 2 to slide, and a plurality of overflow holes 21 are provided on the side area of ​​the barrel 2 close to the conical follower core 5, which is called the overflow section. The inner cavity of the barrel 2 is connected to the inner cavity of the conical centrifugal barrel 4 through the overflow holes 21.

[0058] Reference Figure 7 The adjusting unit 8 includes a fixed cylinder 81, a force ring 82 and a plurality of adjusting screws 83. The fixed cylinder 81 is sleeved on the outer peripheral side of the barrel 2, and the fixed cylinder 81 is welded and fixed to the fixed plate 1. The fixed cylinder 81 and the barrel 2 are coaxially arranged. The force ring 82 is sleeved on the barrel 2, and the force ring 82 is welded and fixed to the barrel 2. The force ring 82 is located between the fixed cylinder 81 and the barrel 2. The adjusting screw 83 is rotatably connected to the fixed cylinder 81, and the adjusting screw 83 is threadedly connected to the force ring 82. In the present application, the number of the adjusting screws 83 can be two, three, or four. In the present embodiment, the number of the adjusting screws 83 is two.

[0059] Reference Figure 7 In order to reduce the heat exchange rate between the barrel 2 and the external environment and thereby ensure the temperature of the molten material inside the barrel 2, a heat-insulating cotton 84 is filled between the fixed barrel 81 and the barrel 2.

[0060] The implementation principle of a modified plastic processing extrusion device in the embodiment of the present application is as follows: the material heating unit 7 heats the conical centrifugal cylinder 4 and / or the conical follower core 5, and then the material is fed into the conical centrifugal cylinder 4 through the feed port 41. Since the conical centrifugal cylinder 4 keeps rotating at a high speed, the material entering the conical centrifugal cylinder 4 moves toward the side of the fixed plate 1 under the action of centrifugal force. At the same time, the material heating unit 7 transfers heat to the material through heat exchange, so that the material remains in a molten state. Due to the action of centrifugal force, the molten material enters between the conical follower core 5 and the fixed plate 1 through the processing cavity, and then Entering into the barrel 2, at this time, force is applied to the conical follower core 5, so that the conical follower core 5 drives the extrusion column head 6 to move toward the side of the fixed plate 1, and the extrusion column head 6 cooperates with the barrel 2 and injects the molten material in the barrel 2 into the molding mold through the extrusion nozzle. When the conical follower core 5 slides toward the side of the fixed plate 1, the distance between the conical centrifugal cylinder 4 and the conical follower core 5 increases, and the molten material is attached to the conical centrifugal cylinder 4 under the influence of centrifugal force. The molten material between the conical follower core 5 and the fixed plate 1 flows back into the processing cavity, thereby improving the homogenization rate between the molten materials in the inner cavity of the conical centrifugal cylinder 4.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A modified plastic processing extrusion device, characterized in that: include: A fixed plate (1), the fixed plate (1) being connected to a barrel (2), the barrel (2) having an extrusion nozzle on a side away from the fixed plate (1); A frame (3), the frame (3) being connected to the fixing plate (1), and a mounting cavity being formed between the frame (3) and the fixing plate (1); A conical centrifugal cylinder (4), the conical centrifugal cylinder (4) is located in the installation cavity, and the conical centrifugal cylinder (4) is rotatably connected to the fixed plate (1) and the frame (3), the conical centrifugal cylinder (4) is coaxially arranged with the barrel (2), and a feed port (41) is provided on the conical centrifugal cylinder (4); A conical follower core (5), the conical follower core (5) is coaxially arranged in the inner cavity of the conical centrifugal cylinder (4), and a processing cavity is formed between the conical centrifugal cylinder (4) and the conical follower core (5), the inner cavity of the barrel (2) is connected to the processing cavity, and the conical follower core (5) reciprocates along the axial direction of the barrel (2); An extrusion column head (6), the extrusion column head (6) is coaxially connected to the side of the conical follower core (5) close to the barrel (2), and the extrusion column head (6) can extend into and be slidably connected to the inner wall of the barrel (2); A material heating unit (7) for heating the material in the processing chamber, wherein the material heating unit (7) is connected to the conical centrifugal cylinder (4) and / or the conical follower core (5); The conical follower core (5) is rotatably connected to the frame (3), and the extrusion column head (6) is rotatably connected to the conical follower core (5).

2. The modified plastic processing extrusion device according to claim 1, characterized in that: A plurality of homogenizing strips (51) are connected to the outer peripheral side of the conical follower core (5); the homogenizing strips (51) are located in the gap between the conical centrifugal cylinder (4) and the conical follower core (5), and the homogenizing strips (51) and the conical centrifugal cylinder (4) are staggered.

3. The modified plastic processing extrusion device according to any one of claims 1-2, characterized in that: The barrel (2) is slidably connected to the fixed plate (1); an adjustment unit (8) is provided on the side of the fixed plate (1) away from the conical centrifugal barrel (4); the adjustment unit (8) is connected to the barrel (2) and is used to drive the barrel (2) to slide; and a plurality of overflow holes (21) are provided on the side of the barrel (2) close to the conical follower core (5); the inner cavity of the barrel (2) is connected to the inner cavity of the conical centrifugal barrel (4) through the overflow holes (21).

4. The modified plastic processing extrusion device according to claim 3, characterized in that: The regulating unit (8) comprises: A fixed cylinder (81), wherein the fixed cylinder (81) is sleeved on the outer peripheral side of the barrel (2), and the fixed cylinder (81) is connected to the fixed plate (1); A stress ring (82), the stress ring (82) is connected to the barrel (2), and the stress ring (82) is located between the fixed barrel (81) and the barrel (2); A plurality of adjusting screws (83) are provided, wherein the adjusting screws (83) are rotatably connected to the fixing tube (81), and the adjusting screws (83) are threadedly connected to the force ring (82).

5. The modified plastic processing extrusion device according to claim 4, characterized in that: The space between the fixed cylinder (81) and the machine cylinder (2) is filled with heat-insulating cotton (84).

6. The modified plastic processing extrusion device according to claim 1, characterized in that: The extrusion column head (6) has an introduction chamfered section on the side close to the barrel (2), and the outer diameter of the introduction chamfered section is smaller than the inner diameter of the barrel (2).

7. The modified plastic processing extrusion device according to claim 1, characterized in that: The conical follower core (5) is hollow.

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