Extrusion equipment for processing co-extrusion modified materials

Abstract

An extrusion device for processing co-extruded modified materials relates to the field of co-extruded modified materials processing, and includes a base, and a feeding mechanism and a spiral extrusion mechanism arranged on the base. The feeding mechanism is arranged at the feeding end of the spiral extrusion mechanism; the spiral extrusion mechanism includes an extrusion cylinder and an extrusion spiral shaft, wherein the extrusion cylinder is arranged on the base, and the extrusion spiral shaft is arranged inside the extrusion cylinder; the feeding mechanism includes a feeding hopper and an adjusting cover assembly. The extrusion device for processing co-extruded modified materials of the present invention adjusts the effective extrusion length of the extrusion spiral shaft by a feeding mechanism with adjustable feeding position, thereby adjusting the extrusion degree of the co-extruded modified materials. The model of the co-extruded material is fed according to the need of the extrusion degree by adjusting the position of the feeding hopper relative to the extrusion spiral shaft. The distance between the feeding hopper and the discharge port of the extrusion spiral shaft is the effective extrusion length of the extrusion spiral shaft, thereby producing more models of co-extruded materials.

Description

Technical Field

[0001] The invention relates to the technical field of co-extrusion modified material processing, in particular to an extrusion device for co-extrusion modified material processing. Background Art

[0002] With the continuous development of modern industry, the requirements for material performance are increasing day by day. As a new type of material with excellent performance, co-extrusion modified materials have shown great application potential in many fields. Co-extrusion modified materials are made by co-extrusion of two or more materials with different properties. Co-extrusion modified materials came into being when traditional single materials could not meet the complex use environment and high performance requirements. It combines the advantages of different materials, such as one material may have high strength and another material has good corrosion resistance. By combining them together through the co-extrusion process, the final product can have multiple excellent properties at the same time. At present, in the construction, automobile, electronics and other industries, the performance requirements for materials are getting higher and higher.

[0003] However, the production and processing of co-extruded modified materials face many challenges. Among them, in terms of the extrusion procedure, different types of co-extruded materials require different degrees of extrusion. But the screw length in each screw extruder is fixed, which makes the extrusion degree of the screw extruder unadjustable. As a result, a screw extruder can often only produce one type of co-extruded material, which limits the type of material processed by the screw extruder, and in turn limits the production of co-extruded material types. In order to meet the production needs of different types of co-extruded materials, multiple screw extruders of different types are required to match the corresponding materials separately, which undoubtedly greatly increases the production cost of the materials. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] Therefore, the object of the present invention is to provide an extrusion device for processing co-extruded modified materials, which can produce more types of co-extruded materials.

[0006] To achieve the above-mentioned purpose, the present invention proposes an extrusion device for co-extrusion modified material processing, comprising a base, and a feeding mechanism and a spiral extrusion mechanism arranged on the base, wherein the feeding mechanism is arranged at the feeding end of the spiral extrusion mechanism, and the spiral extrusion mechanism includes an extrusion barrel and an extrusion spiral shaft, wherein the extrusion barrel is arranged on the base, and the extrusion spiral shaft is arranged inside the extrusion barrel, and the feeding mechanism includes a feeding hopper and an adjusting cover assembly, wherein an adjusting groove is opened on the upper side of the extrusion barrel, the adjusting cover assembly is arranged on the inner side of the adjusting groove, and the feeding hopper is arranged on the adjusting cover assembly, and the adjusting cover assembly is used to adjust the feeding position of the feeding hopper relative to the extrusion spiral shaft according to the extrusion degree of different modified materials, and the adjusting cover assembly includes an adjusting cover slidingly arranged on the inner side of the adjusting groove, and the extrusion barrel is provided with an adjusting cover driving assembly for controlling the moving position of the adjusting cover, and the adjusting cover driving assembly includes an adjusting screw threaded through the adjusting cover.

[0007] Furthermore, a driving mechanism is provided at the power input end of the extrusion screw shaft, and the driving mechanism is used to stabilize the rotation speed of the extrusion screw shaft. The driving mechanism includes a driving motor, a driving flywheel, a driven flywheel and a buffer belt assembly, wherein the driving motor is arranged on the base, and a reducer is provided at the output end of the driving motor, and the output end of the reducer is softly connected to the driving flywheel through a buffer belt assembly, and the circumferential sides of the driving flywheel and the driven flywheel are both provided with toothed disks, and the driving flywheel is meshed with the driven flywheel through the toothed disks.

[0008] Furthermore, the buffer belt assembly includes a braided belt and a tension spring, wherein a buffer groove is opened on the inner side of the active flywheel, an active drive shaft is arranged on the output shaft of the reducer, the braided belt is arranged between the outer surface of the active drive shaft and the inner wall of the buffer groove, the tension spring is arranged on the inner side of the braided belt, and the two ends of the tension spring are respectively connected to the outer surface of the active drive shaft and the inner wall of the buffer groove.

[0009] Furthermore, two extrusion screw shafts are provided inside the extrusion cylinder, and the two extrusion screw shafts are respectively connected to the driving flywheel and the driven flywheel, and counterweight blocks are provided inside the driving flywheel and the driven flywheel.

[0010] Furthermore, the extrusion cylinder is provided with a pulley motor, a driving pulley and a driven pulley, wherein the output shaft of the pulley motor is connected to the driving pulley, and the driving pulley is dynamically connected to the driven pulley by a belt, and two adjusting screw rods are provided, and the two adjusting screw rods are respectively arranged on both sides of the adjusting cover plate, and the two adjusting screw rods are respectively connected to the driving pulley and the driven pulley.

[0011] Furthermore, sliders are provided on both sides of the adjustment cover, a slide groove matched with the slider is provided on the inner wall of the adjustment groove, a feed port is opened on the adjustment cover, a connecting seat is provided on the upper surface of the feed port, and the connecting seat is connected to the bottom of the feeding hopper.

[0012] Furthermore, a folding cover is provided on the inner side of the adjustment groove, one end of the folding cover is connected to the end of the adjustment groove, and the other end is connected to the adjustment cover, and a cover storage groove is provided at one end of the adjustment groove, and the cover storage groove is adapted to the adjustment cover.

[0013] Furthermore, a feeding barrel is provided at the bottom of the feeding hopper, and a feeding screw shaft and a feeding motor are provided inside the feeding hopper, wherein the feeding motor is fixedly arranged on the inner side of the feeding hopper, the feeding screw shaft passes through the feeding barrel, and the power shaft of the feeding motor is connected to the feeding screw shaft.

[0014] Furthermore, the extrusion cylinder is provided with two parts, an upper part and an lower part, and the upper part and the lower part of the extrusion cylinder are connected by fixing screws.

[0015] Beneficial effect: The present invention adjusts the effective extrusion length of the extrusion screw shaft through a feeding mechanism with adjustable feeding position, thereby adjusting the extrusion degree of the co-extruded modified material. The co-extruded material model is fed according to the need of the extrusion degree by adjusting the position of the feeding hopper relative to the extrusion screw shaft. The distance between the feeding hopper and the discharge port of the extrusion screw shaft is the effective extrusion length of the extrusion screw shaft, thereby more types of co-extruded materials can be produced.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the overall structure of an extrusion device for processing co-extrusion modified materials according to one embodiment of the present invention; Figure 2 It is a schematic structural diagram of a driving mechanism and a feeding mechanism in an extrusion device for processing co-extrusion modified materials according to one embodiment of the present invention; Figure 3 for Figure 2 A magnified view of middle; Figure 4 for Figure 2 Enlarged view of middle B; Figure 5A front cross-sectional view of an extrusion device for processing a co-extruded modified material according to an embodiment of the present invention; Figure 6 for Figure 5 Enlarged view of middle C; Figure 7 It is a left side cross-sectional view of an extrusion device for processing a co-extrusion modified material according to one embodiment of the present invention; Figure 8 The present invention is a schematic structural diagram of an adjustable cover plate assembly in an extrusion device for processing co-extruded modified materials according to an embodiment of the present invention.

[0018] As shown in the figure: 1. Driving mechanism; 11. Driving motor; 12. Speed ​​reducer; 13. Driven flywheel; 14. Toothed disc; 15. Active flywheel; 16. Buffer belt assembly; 161. Braided belt; 162. Tension spring; 17. Active driving shaft; 18. Buffer groove; 2. Feeding mechanism; 21. Adjusting cover driving assembly; 211. Driven pulley; 212. Belt; 213. Active pulley; 214. Pulley motor bracket; 215. Pulley motor; 22. Folding cover ; 23. Feed hopper; 24. Feed motor; 241. Feed motor bracket; 242. Feed screw shaft; 25. Feed barrel; 26. Adjustment cover assembly; 261. Threaded hole; 262. Slider; 263. Adjustment screw; 264. Feed inlet; 265. Adjustment cover; 27. Cover storage slot; 28. Connecting seat; 29. ​​Adjustment slot; 3. Spiral extrusion mechanism; 31. Extrusion barrel; 311. Fixing screw; 32. Discharge nozzle; 33. Extrusion screw shaft; 4. Base. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The extrusion equipment for processing co-extruded modified materials according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0021] like Figure 2-Figure 5 As shown, the extrusion equipment for co-extrusion modified material processing provided by the embodiment of the present invention includes a base 4, and a feeding mechanism 2 and a screw extrusion mechanism 3 arranged on the base 4, wherein the feeding mechanism 2 is arranged at the feeding end of the screw extrusion mechanism 3.

[0022] The screw extrusion mechanism 3 includes an extrusion cylinder 31 and an extrusion screw shaft 33 , wherein the extrusion cylinder 31 is disposed on the base 4 , and the extrusion screw shaft 33 is disposed inside the extrusion cylinder 31 .

[0023] The feeding mechanism 2 includes a feeding hopper 23 and an adjusting cover assembly 26, wherein an adjusting groove 29 is opened on the upper side of the extrusion cylinder 31, the adjusting cover assembly 26 is arranged on the inner side of the adjusting groove 29, and the feeding hopper 23 is arranged on the adjusting cover assembly 26. The adjusting cover assembly 26 is used to adjust the feeding position of the feeding hopper 23 relative to the extrusion screw shaft 33 according to the extrusion degree of different modified materials. The adjusting cover assembly 26 includes an adjusting cover 265 slidably arranged on the inner side of the adjusting groove 29.

[0024] An adjusting cover plate driving assembly 21 for controlling the moving position of the adjusting cover plate 265 is disposed on the extrusion cylinder 31 . The adjusting cover plate driving assembly 21 includes an adjusting screw rod 263 threadedly penetrating the adjusting cover plate 265 .

[0025] Specifically, when the material is co-extruded and modified, the material to be co-extruded is mixed and placed in the feeding hopper 23. The material gradually slides down to the adjusting cover 265 under the action of gravity, and passes through the adjusting cover 265 into the extrusion cylinder 31. The two extrusion screw shafts 33 in the extrusion cylinder 31 co-extrude the material. The material is modified after co-extrusion to form a co-extruded modified material. Finally, the co-extruded modified material enters the discharge nozzle 32 through the transmission action of the extrusion screw shaft 33 and is discharged through the discharge nozzle 32.

[0026] When it is necessary to adjust the extrusion degree of the co-extruded modified material, such as Figure 2 and Figure 5 As shown, the adjusting screw 263 is rotated to drive the adjusting cover plate 265 to adjust the position. When the adjusting cover plate 265 moves left and right, the adjusting cover plate 265 drives the feeding hopper 23 to move, thereby adjusting the position of the feeding hopper 23 relative to the extrusion screw shaft 33, and the distance from the discharge port at the bottom of the feeding hopper 23 to the discharge end of the extrusion screw shaft 33 is the effective extrusion distance of the extrusion screw shaft 33, thereby adjusting the extrusion degree of the co-extruded modified material. And when the adjusting cover plate 265 moves left and right, it can cover the top of the effective extrusion part of the extrusion screw shaft 33, so that the adjusting cover plate 265 supports the effective extrusion part of the extrusion screw shaft 33, so that the extrusion screw shaft 33 can fully co-extrude the material.

[0027] In one embodiment of the present invention, Figure 2 and Figure 4As shown, a driving mechanism 1 is provided at the power input end of the extrusion screw shaft 33, and the driving mechanism 1 is used to stabilize the rotation speed of the extrusion screw shaft 33. The driving mechanism 1 includes a driving motor 11, a driving flywheel 15, a driven flywheel 13 and a buffer belt assembly 16, wherein two extrusion screw shafts 33 are provided inside the extrusion cylinder 31, and the two extrusion screw shafts 33 are respectively connected to the driving flywheel 15 and the driven flywheel 13, the driving motor 11 is arranged on the base 4, and a reducer 12 is provided at the output end of the driving motor 11, and the output end of the reducer 12 is softly connected to the driving flywheel 15 through the buffer belt assembly 16, and the circumferential sides of the driving flywheel 15 and the driven flywheel 13 are both provided with toothed discs 14, and the driving flywheel 15 is meshed with the driven flywheel 13 through the toothed discs 14, and counterweights are provided inside the driving flywheel 15 and the driven flywheel 13.

[0028] Specifically, during the rotation of the two extrusion screw shafts 33, the two extrusion screw shafts 33 are respectively connected to the driving flywheel 15 and the driven flywheel 13 for driving. Since the driving flywheel 15 and the driven flywheel 13 have large masses and large inertia, the rotation speeds of the two extrusion screw shafts 33 tend to be stable. The driving flywheel 15 drives the driven flywheel 13 to rotate synchronously and in opposite directions through the toothed disc 14, so that the two extrusion screw shafts 33 rotate synchronously and in opposite directions, and the materials are stably co-extruded.

[0029] The driving motor 11 drives the reducer 12 to rotate, and the active flywheel 15 is softly connected to the active drive shaft 17 on the reducer 12 through the buffer belt assembly 16. On the one hand, the vibration generated during the operation of the active drive shaft 17 of the reducer 12 will not be directly transmitted to the active flywheel 15 and the driven flywheel 13. In addition, when the speed of the active drive shaft 17 of the reducer 12 is unstable, the kinetic energy on the active drive shaft 17 is absorbed by the elastic buffer belt assembly 16, and the rotational kinetic energy is converted into the elastic potential energy of the buffer belt assembly 16. Subsequently, the elastic potential energy of the buffer belt assembly 16 is converted into the rotational kinetic energy of the active flywheel 15. In this way, the buffer belt assembly 16 can average the kinetic energy on the active drive shaft 17 and output it, so that the speed of the active flywheel 15 is more stable, even during deceleration and acceleration.

[0030] In one embodiment of the present invention, Figure 3 and Figure 6 As shown, the buffer belt assembly 16 includes a braided belt 161 and a tension spring 162, wherein a buffer groove 18 is opened on the inner side of the active flywheel 15, an active drive shaft 17 is arranged on the output shaft of the reducer 12, the braided belt 161 is arranged between the outer surface of the active drive shaft 17 and the inner wall of the buffer groove 18, the tension spring 162 is arranged on the inner side of the braided belt 161, and the two ends of the tension spring 162 are respectively connected to the outer surface of the active drive shaft 17 and the inner wall of the buffer groove 18.

[0031] Specifically, during the buffering process of the buffer belt assembly 16, the function of the braided belt 161 is to protect the internal tension spring 162 from excessive deformation, and the rotational kinetic energy of the active drive shaft 17 is converted into the elastic potential energy of the tension spring 162 through the tension spring 162, and the elastic potential energy of the tension spring 162 is further converted into the kinetic energy of the active flywheel 15.

[0032] In one embodiment of the present invention, Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, the extrusion cylinder 31 is provided with a pulley motor 215, a driving pulley 213 and a driven pulley 211, wherein the output shaft of the pulley motor 215 is connected to the driving pulley 213, the pulley motor 215 is fixedly arranged on the extrusion cylinder 31 through the pulley motor bracket 214, the driving pulley 213 is connected to the driven pulley 211 by a belt 212, and two adjusting screw rods 263 are provided, and the two adjusting screw rods 263 are respectively arranged on both sides of the adjusting cover plate 265, and the two adjusting screw rods 263 are respectively connected to the driving pulley 213 and the driven pulley 211, so that the driving force on both sides of the adjusting cover plate 265 is balanced, so that the adjusting cover plate 265 can move left and right smoothly.

[0033] Specifically, when the feeding position of the feeding hopper 23 is adjusted, the driving pulley 213 is driven to rotate by the pulley motor 215, and the driving pulley 213 rotates to drive the driven pulley 211 to rotate through the belt 212, thereby causing the two screws to rotate synchronously, and the screws are threadedly engaged with the threaded holes 261 on the inner side of the adjustment cover 265, driving the adjustment cover 265 to move left and right inside the adjustment groove 29, thereby driving the feeding hopper 23 on the adjustment groove 29 to move left and right, so as to adjust the position of the feeding position relative to the extrusion screw shaft 33, thereby adjusting the effective extrusion length of the extrusion screw shaft 33, and thereby adjusting the extrusion degree of the co-extruded material.

[0034] In the process of adjusting the cover plate 265 to move left and right, Figure 2 and Figure 5 As shown, the portion of the right side of the adjusting cover plate 265 that overlaps with the adjusting groove 29 is the effective extrusion portion of the extrusion screw shaft 33. The material enters the extrusion screw shaft 33 from the feed port 264, and is continuously extruded and transported to the right along the extrusion screw shaft 33, and is discharged from the discharge nozzle 32. During this process, the adjusting cover plate 265 blocks and supports the upper side of the effective extrusion portion of the extrusion screw shaft 33, so that the extrusion screw shaft 33 is effectively extruded to prevent material overflow.

[0035] In one embodiment of the present invention, Figure 8As shown, sliders 262 are provided on both sides of the adjusting cover 265, and the inner wall of the adjusting groove 29 is provided with sliding grooves adapted to the sliders 262, which are used to support both sides of the adjusting cover 265. A feed port 264 is opened on the adjusting cover 265, and a connecting seat 28 is provided on the upper surface of the feed port 264. The connecting seat 28 is connected to the bottom of the feeding hopper 23, so that the material inside the feeding hopper 23 enters the feed port 264 and is transmitted from the feed port 264 into the extrusion screw shaft 33.

[0036] In one embodiment of the present invention, Figure 2 As shown, a folding cover plate 22 is also provided inside the adjustment groove 29, one end of the folding cover plate 22 is connected to the end of the adjustment groove 29, and the other end is connected to the adjustment cover plate 265. The folding cover plate 22 is used to shield the ineffective extrusion part on the left side of the extrusion screw shaft 33 to prevent the material on the extrusion screw shaft 33 from splashing out, and the material is continuously extruded and transmitted to the right along the extrusion screw shaft 33. A cover plate storage groove 27 is provided at one end of the adjustment groove 29, and the cover plate storage groove 27 is adapted to the adjustment cover plate 265 to isolate and protect the end of the adjustment cover plate 265 to prevent extrusion damage to the human body and objects.

[0037] In one embodiment of the present invention, Figure 2 and Figure 5 As shown, a feeding barrel 25 is provided at the bottom of the feeding hopper 23, and a feeding screw shaft 242 and a feeding motor 24 are provided inside the feeding hopper 23, wherein the feeding motor 24 is fixedly arranged on the inner side of the feeding hopper 23 through a feeding motor bracket 241, the feeding screw shaft 242 passes through the feeding barrel 25, and the power shaft of the feeding motor 24 is connected to the feeding screw shaft 242.

[0038] Specifically, after the material is placed in the feeding hopper 23, in order to allow the material to enter the extrusion screw shaft 33 evenly and effectively, the feeding motor 24 drives the feeding screw shaft 242 to rotate. The rotation of the screw shaft transfers the material in the feeding hopper 23 downward evenly to the feeding barrel 25, and is discharged into the extrusion screw shaft 33 through the outlet at the bottom of the feeding barrel 25.

[0039] In one embodiment of the present invention, Figure 2 and Figure 7 As shown, the extrusion cylinder 31 is provided with two parts, an upper part and an lower part, and the upper part and the lower part of the extrusion cylinder 31 are connected by a fixing screw 311, so that the extrusion cylinder 31 can be opened conveniently for maintenance of the inside.

[0040] In order to clearly explain the above embodiments, refer to Figure 1-Figure 8The specific working principle of the extrusion equipment for co-extrusion modified material processing of the present invention is as follows: when the material is co-extruded and modified, the materials to be co-extruded are first mixed and placed in the feeding hopper 23. After the materials are placed in the feeding hopper 23, the feeding motor 24 drives the feeding screw shaft 242 to rotate. The rotation of the screw shaft transfers the material in the feeding hopper 23 downward evenly to the feeding barrel 25, and is discharged into the extrusion barrel 31 through the feeding port 264 connected to the adjusting cover plate 265 at the bottom of the feeding barrel 25.

[0041] Subsequently, the driving motor 11 drives the reducer 12 to rotate, and the output end of the reducer 12 drives the active flywheel 15 to rotate through the active driving shaft 17. The active flywheel 15 drives the driven flywheel 13 to rotate synchronously and in opposite directions through the gear plate 14, and drives the two extrusion screw shafts 33 to rotate synchronously and in opposite directions, so that the two extrusion screw shafts 33 in the extrusion cylinder 31 co-extrude the material, and the material is modified after co-extrusion to form a co-extruded modified material. Finally, the co-extruded modified material enters the discharge nozzle 32 through the transmission action of the extrusion screw shaft 33 and is discharged through the discharge nozzle 32.

[0042] In the above process, since the two extrusion screw shafts 33 are respectively connected to the driving flywheel 15 and the driven flywheel 13, and since the driving flywheel 15 and the driven flywheel 13 have large mass and large inertia, the rotation speed of the two extrusion screw shafts 33 tends to be stable. The driving motor 11 drives the reducer 12 to rotate, and the active flywheel 15 is softly connected to the active drive shaft 17 on the reducer 12 through the buffer belt assembly 16. On the one hand, the vibration generated during the operation of the active drive shaft 17 of the reducer 12 will not be directly transmitted to the active flywheel 15 and the driven flywheel 13. In addition, when the speed of the active drive shaft 17 of the reducer 12 is unstable, the kinetic energy on the active drive shaft 17 is absorbed by the elastic buffer belt assembly 16, and the rotational kinetic energy is converted into the elastic potential energy of the buffer belt assembly 16. Then, the elastic potential energy of the buffer belt assembly 16 is converted into the rotational kinetic energy of the active flywheel 15. In this way, the buffer belt assembly 16 can average the kinetic energy on the active drive shaft 17 and output it, so that the speed of the active flywheel 15 is more stable, and the speed of the two extrusion screw shafts 33 tends to be stable.

[0043] When the extrusion degree of the material needs to be adjusted, the active pulley 213 is first driven to rotate by the pulley motor 215. The rotation of the active pulley 213 drives the driven pulley 211 to rotate through the belt 212, thereby causing the two screws to rotate synchronously. The screw is threadedly engaged with the threaded hole 261 on the inner side of the adjustment cover 265, driving the adjustment cover 265 to move left and right inside the adjustment groove 29, thereby driving the feeding hopper 23 on the adjustment groove 29 to move left and right to adjust the feeding position relative to the extrusion screw shaft 33. The distance from the discharge port at the bottom of the feeding hopper 23 to the discharge end of the extrusion screw shaft 33 is the effective extrusion distance of the extrusion screw shaft 33, thereby adjusting the extrusion degree of the co-extruded material.

[0044] In addition, when the adjustment cover plate 265 moves left and right, it can cover the upper part of the effective extrusion part of the extrusion screw shaft 33, so that the adjustment cover plate 265 supports the effective extrusion part of the extrusion screw shaft 33, so that the extrusion screw shaft 33 can fully co-extrude the material.

[0045] In summary, the extrusion equipment for processing co-extruded modified materials in the embodiment of the present invention adjusts the effective extrusion length of the extrusion screw shaft through a feeding mechanism with an adjustable feeding position, thereby adjusting the extrusion degree of the co-extruded modified material. The co-extruded material model is fed according to the needs of the extrusion degree by adjusting the position of the feeding hopper relative to the extrusion screw shaft. The distance between the feeding hopper and the discharge port of the extrusion screw shaft is the effective extrusion length of the extrusion screw shaft, thereby being able to produce more types of co-extruded materials.

[0046] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. An extrusion device for processing co-extrusion modified materials, characterized in that: It comprises a base (4), and a feeding mechanism (2) and a screw extrusion mechanism (3) arranged on the base (4), wherein the feeding mechanism (2) is arranged at the feeding end of the screw extrusion mechanism (3); The screw extrusion mechanism (3) comprises an extrusion cylinder (31) and an extrusion screw shaft (33), wherein the extrusion cylinder (31) is arranged on the base (4), and the extrusion screw shaft (33) is arranged inside the extrusion cylinder (31); The feeding mechanism (2) comprises a feeding hopper (23) and an adjusting cover assembly (26), wherein an adjusting groove (29) is provided on the upper side of the extrusion cylinder (31), the adjusting cover assembly (26) is arranged on the inner side of the adjusting groove (29), the feeding hopper (23) is arranged on the adjusting cover assembly (26), the adjusting cover assembly (26) is used to adjust the feeding position of the feeding hopper (23) relative to the extrusion screw shaft (33) according to the extrusion degree of different modified materials, and the adjusting cover assembly (26) comprises an adjusting cover (265) slidably arranged on the inner side of the adjusting groove (29); An adjusting cover plate driving assembly (21) for controlling the moving position of the adjusting cover plate (265) is provided on the extrusion cylinder (31), and the adjusting cover plate driving assembly (21) comprises an adjusting screw rod (263) threadedly penetrating the adjusting cover plate (265).

2. The extrusion equipment for co-extrusion modified material processing according to claim 1, characterized in that: A driving mechanism (1) is provided at the power input end of the extrusion screw shaft (33), and the driving mechanism (1) is used to stabilize the rotation speed of the extrusion screw shaft (33). The driving mechanism (1) comprises a driving motor (11), a driving flywheel (15), a driven flywheel (13) and a buffer belt assembly (16), wherein the driving motor (11) is arranged on the base (4), and a reducer (12) is provided at the output end of the driving motor (11), and the output end of the reducer (12) is softly connected to the driving flywheel (15) through the buffer belt assembly (16), and the circumferential side surfaces of the driving flywheel (15) and the driven flywheel (13) are both provided with toothed discs (14), and the driving flywheel (15) meshes with the driven flywheel (13) through the toothed discs (14).

3. The extrusion equipment for co-extrusion modified material processing according to claim 2, characterized in that: The buffer belt assembly (16) comprises a braided belt (161) and a tension spring (162), wherein a buffer groove (18) is provided on the inner side of the active flywheel (15), an active drive shaft (17) is provided on the output shaft of the reducer (12), the braided belt (161) is provided between the outer surface of the active drive shaft (17) and the inner wall of the buffer groove (18), the tension spring (162) is provided on the inner side of the braided belt (161), and two ends of the tension spring (162) are respectively connected to the outer surface of the active drive shaft (17) and the inner wall of the buffer groove (18).

4. The extrusion equipment for co-extrusion modified material processing according to claim 2, characterized in that: Two extrusion screw shafts (33) are provided inside the extrusion cylinder (31), and the two extrusion screw shafts (33) are respectively connected to the driving flywheel (15) and the driven flywheel (13), and counterweight blocks are provided inside the driving flywheel (15) and the driven flywheel (13).

5. The extrusion equipment for co-extrusion modified material processing according to claim 1, characterized in that: The extrusion cylinder (31) is provided with a pulley motor (215), a driving pulley (213) and a driven pulley (211), wherein the output shaft of the pulley motor (215) is connected to the driving pulley (213), and the driving pulley (213) is connected to the driven pulley (211) by means of a belt (212). Two adjusting screw rods (263) are provided, and the two adjusting screw rods (263) are respectively arranged on both sides of the adjusting cover plate (265), and the two adjusting screw rods (263) are respectively connected to the driving pulley (213) and the driven pulley (211).

6. The extrusion equipment for co-extrusion modified material processing according to claim 5, characterized in that: Slide blocks (262) are provided on both sides of the adjustment cover plate (265), and the inner wall of the adjustment groove (29) is provided with a slide groove matched with the slide blocks (262). A feed port (264) is provided on the adjustment cover plate (265), and a connecting seat (28) is provided on the upper surface of the feed port (264), and the connecting seat (28) is connected to the bottom of the feeding hopper (23).

7. The extrusion equipment for co-extrusion modified material processing according to claim 1, characterized in that: A folding cover plate (22) is also provided inside the adjustment groove (29), one end of the folding cover plate (22) is connected to the end of the adjustment groove (29), and the other end is connected to the adjustment cover plate (265), and a cover plate receiving groove (27) is provided at one end of the adjustment groove (29), and the cover plate receiving groove (27) is adapted to the adjustment cover plate (265).

8. The extrusion equipment for co-extrusion modified material processing according to claim 1, characterized in that: A feeding cylinder (25) is arranged at the bottom of the feeding hopper (23), and a feeding screw shaft (242) and a feeding motor (24) are arranged inside the feeding hopper (23), wherein the feeding motor (24) is fixedly arranged inside the feeding hopper (23), the feeding screw shaft (242) passes through the feeding cylinder (25), and the power shaft of the feeding motor (24) is connected to the feeding screw shaft (242).

9. The extrusion equipment for co-extrusion modified material processing according to claim 1, characterized in that: The extrusion cylinder (31) is provided with two upper and lower parts, and the upper and lower parts of the extrusion cylinder (31) are connected by a fixing screw (311).

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