High-yield extruder for artificial leather production

Abstract

The high-yield extruder comprises a machine barrel, an extrusion screw and a driving device, the extrusion screw comprises a rod body extending in the front-back direction and threads spirally extending along the rod body, the rod body sequentially comprises a feeding section, a plasticizing section and a mixing section from front to back, and the bottom diameter of the mixing section is larger than that of the feeding section; threads are arranged on the feeding section, the plasticizing section and the mixing section, the outer diameters of the threads are unchanged, the length of the plasticizing section is larger than that of the feeding section and that of the mixing section, a liquid phase groove extending spirally is formed in the threads of the plasticizing section, and the volume of the liquid phase groove is gradually increased from front to back; the mixing section is further provided with mixing groups which are distributed at intervals from front to back, each mixing group comprises a plurality of round pins which are sequentially arranged in the circumferential direction of the rod body, and the round pins extend in the radial direction of the rod body and are arranged away from the threads; according to the screw design aiming at the material characteristics, the capacity of the extruder is improved, the energy consumption is reduced, and the requirements of the current market for high yield and energy conservation are met.

Description

Technical Field

[0001] The present application relates to the technical field of plastic production equipment, and in particular to a high-yield extruder for artificial leather production. Background Art

[0002] At present, the extrusion equipment used to produce artificial leather is limited by the structure of the extrusion screw, so the plasticization and production capacity of the extrusion equipment are limited, resulting in insufficient plasticization of the material and low production capacity, which cannot meet the high-production requirements of customers. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of this application is to provide a high-yield extruder for artificial leather production.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a high-yield extruder for artificial leather production, comprising a barrel, an extrusion screw rotatably arranged in the barrel and a driving device connected to the extrusion screw, wherein the extrusion screw comprises a rod body extending in a front-to-back direction and a thread extending spirally from front to back along the rod body, wherein the rod body is divided into a feeding section, a plasticizing section and a mixing section from front to back, wherein the bottom diameter of the mixing section is larger than the bottom diameter of the feeding section, wherein the outer diameter of the thread is unchangedly arranged in the feeding section, the plasticizing section and the mixing section, and the length of the plasticizing section is larger than the bottom diameter of the feeding section. In the length of the feeding section and the mixing section, a spirally extending liquid phase groove is opened on the thread of the plasticizing section, the volume of the liquid phase groove gradually increases from front to back, the groove depth of the liquid phase groove gradually decreases from front to back, and the groove width of the liquid phase groove gradually increases from front to back; the mixing section is also provided with mixing groups spaced from front to back, each of the mixing groups includes a plurality of round pins arranged in sequence along the circumference of the rod body, each of the round pins extends along the radial direction of the rod body and avoids the thread arrangement, and the outer diameter of each mixing group is consistent with the outer diameter of the thread.

[0005] In the above technical solution, it is further preferred that the liquid phase groove separates the thread into a main screw ridge and a secondary screw ridge, the rear end face of the main screw ridge, the front end face of the secondary screw ridge and the outer surface of the rod body form the liquid phase groove, and the rear end face of the secondary screw ridge, the front end face of the main screw ridge and the outer surface of the rod body form the solid phase groove.

[0006] In the above technical solution, it is further preferred that the volume of the solid phase groove gradually decreases from front to back, the groove depth of the solid phase groove gradually decreases from front to back, and the groove width of the solid phase groove gradually decreases from front to back.

[0007] In the above technical solution, it is further preferred that the bottom diameter of the mixing section is 1.3-1.5 times the bottom diameter of the feeding section.

[0008] In the above technical solution, it is further preferred that the barrel is provided with a feeding port for material entry, a discharging port for material output and an extrusion channel for installation of the extrusion screw, the extrusion channel is connected with the feeding port and the discharging port, the feeding port corresponds to the position of the feeding section, and is arranged adjacent to the front end of the feeding section.

[0009] In the above technical solution, it is further preferred that the inner wall surface of the barrel is provided with a plurality of straight grooves arranged in sequence around the circumference of the extrusion channel, each of the straight grooves extends in the front-to-back direction, the plurality of straight grooves correspond to the position of the feeding section, and are arranged away from the feeding port.

[0010] In the above technical solution, it is further preferred that it also includes a plurality of far-infrared heating coils, and the plurality of far-infrared heating coils are sleeved on the outside of the barrel from front to back.

[0011] In the above technical solution, it is further preferred that the driving device includes a reducer and a driving motor, the reducer is drivingly connected between the extrusion screw and the driving motor, and the driving motor is an induction servo motor.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This application improves the production capacity of the extruder and reduces energy consumption by designing a screw based on material characteristics, which meets the current market demand for high production and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a high-yield extruder for artificial leather production provided in an embodiment of the present application;

[0015] Figure 2 for Figure 1 A schematic diagram of the structure of an extrusion screw of an extruder;

[0016] Figure 3 for Figure 1 Schematic diagram of the structure of the barrel of the extruder.

[0017] Wherein: 100, extruder; 1, barrel; 11, feeding port; 12, discharge port; 13, extrusion channel; 14, straight groove; 2, extrusion screw; 21, rod body; 211, feeding section; 212, plasticizing section; 213, mixing section; 22, thread; 221, main screw rib; 222, auxiliary screw rib; 23, liquid phase tank; 24, solid phase tank; 25, mixing group; 251, round pin; 3, driving device; 31, reducer; 32, driving motor; 4, far-infrared heating coil; 5, hopper; 6, metering pump; 7, extrusion mold; 8, cooling channel. DETAILED DESCRIPTION

[0018] To describe the technical content, structural features, achieved purpose and effect of the application in detail, the technical solutions in the embodiments of the application will be described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all of the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0019] The “front” and “back” mentioned in this application are as follows: Figure 1 Before and after shown.

[0020] The present application embodiment provides a high-yield extruder for artificial leather production, such as Figure 1 , 2 As shown, the extruder 100 includes a barrel 1, an extrusion screw 2 rotatably disposed in the barrel 10, and a driving device 3 transmission-connected to the extrusion screw 2, wherein the driving device 3 is used to drive the extrusion screw 2 to rotate around its own axis in the barrel 1 to convey, shear and mix the material in the barrel 1.

[0021] A plurality of far-infrared heating coils 4 are sequentially sleeved on the barrel 1 from front to back. The far-infrared heating coils 4 heat quickly and are used to heat the barrel 1 so that the material in the barrel 1 can be plasticized as quickly as possible to improve the production efficiency of the extruder, and are more energy-saving than ceramic heating coils.

[0022] like Figure 2 As shown, the extrusion screw 2 includes a rod body 21 extending in the front-to-back direction and a thread 22 spirally extending from front to back along the rod body 21. The rod body 21 is composed of a feeding section 211, a plasticizing section 212 and a mixing section 213 from front to back, and the bottom diameter of the thread 22 is unchanged and distributed in the feeding section 211, the plasticizing section 212 and the mixing section 213.

[0023] The bottom diameter of the feeding section 211 is uniform from front to back, and the screw thread 22 forms a uniform trough in the feeding section 211 to stably feed and transport the material.

[0024] The thread 22 on the plasticizing section 212 is provided with a spirally extending liquid phase groove 23, which divides the thread 22 into a main screw rib 221 and a secondary screw rib 222. The rear end face of the main screw rib 221, the front end face of the secondary screw rib 222 and the outer surface of the rod body 21 form the liquid phase groove 23, and the rear end face of the secondary screw rib 222, the front end face of the main screw rib 221 and the outer surface of the rod body 21 form the solid phase groove 24; wherein, the volume of the liquid phase groove 23 gradually increases from front to back, and the groove depth of the liquid phase groove 23 gradually decreases from front to back, and the groove width gradually increases from front to back; the volume of the solid phase groove 24 gradually decreases from front to back, and the groove depth and groove width of the solid phase groove 24 gradually decrease from front to back. The material is melted and plasticized in the plasticizing section 212, and the molten material is diverted to the liquid phase groove 23, and the solid material continues to be heated and plasticized in the solid phase groove 24. The length of the plasticizing section 212 is greater than the lengths of the feeding section 211 and the mixing section 213. The longer plasticizing section 212 can fully plasticize the material on the extrusion screw 2, thereby improving the quality of the final product.

[0025] The bottom diameter of the mixing section 213 is larger than the bottom diameter of the feeding section 211, and is 1.3-1.5 times the bottom diameter of the feeding section 211. The deeper screw groove of the feeding section 211 increases the material intake of the feeding section 211, which helps to increase the output of the extrusion screw; the shallower screw groove of the mixing section 213 stabilizes the extrusion pressure, and the extrusion screw 2 with a compression ratio will increase the temperature of the material on the extrusion screw 2, improve the plasticizing efficiency, and reduce the power consumed by the drive device 3, thereby reducing energy consumption and improving efficiency. The mixing section 213 is also provided with mixing groups 25 spaced from front to back, each mixing group 25 includes a plurality of round pins 251 sequentially arranged along the circumference of the rod body 21, each round pin 251 extends along the radial direction of the rod body 21 and is arranged to avoid the thread 22, and the outer diameter of each mixing group 25 is consistent with the outer diameter of the thread 22 on it; the plurality of round pins 251 arranged circumferentially of the rod body 21 disperse and stir the fully plasticized material in the mixing section, and the thread 22 of the mixing section 213 mixes and transports the material; the mixing group 25 of the mixing section 213 cooperates with the thread 22 to stir the material evenly and fully, and to establish a stable extrusion pressure, thereby improving the output stability.

[0026] Since a far-infrared heating ring 4 is provided outside the barrel 1 for heating, if the material stays on the extrusion screw 2 for too long, it will be coked due to long-term overheating, thereby affecting the product quality; in the embodiment of the present application, in order to increase the output of the extruder and reduce the time the material stays on the extrusion screw 2, the diameter of the extrusion screw 2 is designed to be 150mm, the aspect ratio is 28:1, and the lead of the thread 22 is designed to be 140-160mm. The extrusion screw 2 with a large diameter has a high output, and the thread with a larger lead can speed up the material conveying speed and improve the production capacity of the extruder 100.

[0027] like Figure 3 As shown, the barrel 1 is provided with a feeding port 11 for material entry, a discharging port 12 for material output, and an extrusion channel 13 for installing the extrusion screw 2. The extrusion channel 13 is connected with the feeding port 11 and the discharging port 12. The feeding port 11 corresponds to the position of the feeding section 211 and is arranged near the front end of the feeding section 211. The extrusion screw 2 rotates around its own axis in the extrusion channel 13 to convey, shear and stir the material entering from the feeding port 11.

[0028] The inner wall surface of the barrel 1 is provided with a plurality of straight grooves 14 arranged in sequence around the circumference of the extrusion channel 13. Each straight groove 14 extends in the front-to-back direction. A plurality of straight grooves 14 correspond to the position of the feeding section 211 and are arranged away from the feeding port 11. The straight grooves 14 cooperate with the threads 22 of the extrusion screw 2 at the feeding port 11 to increase the material intake of the feeding section 211.

[0029] like Figure 1 As shown, the feeding port 11 of the barrel 1 is equipped with a hopper 5, and the discharging port 12 is equipped with a metering pump 6 and an extrusion die 7. The hopper 5 is used to control the flow rate of the raw material entering the feeding port 11, and the metering pump 6 is used to adjust the flow rate of the material delivered to the extrusion die 7 from the discharging port 12. The extrusion die 7 extrude the plasticized material in the form of a film; a cooling channel 8 is also provided on the barrel 1, and the cooling channel 8 is arranged close to the feeding port 11 to reduce the temperature of the feeding port 11 to avoid bridging of the material at the feeding port 11 and affecting the production efficiency of the extrusion equipment.

[0030] The driving device 3 includes a reducer 31 and a driving motor 32. The driving motor 32 is a 110KW induction servo motor. Under the same output power, the induction servo motor is more energy-efficient than the AC motor. The reducer 31 is transmission-connected between the extrusion screw 2 and the driving motor 32 to transmit the torque output by the driving motor 32 to the extrusion screw 2 to drive the extrusion screw 2 to rotate.

[0031] This application improves the production capacity of the extruder and reduces energy consumption by designing a screw based on material characteristics, which meets the current market demand for high production and energy saving.

[0032] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, and the scope of protection required by the present application is defined by the attached claims, description and their equivalents.

Claims

1. A high-yield extruder for producing artificial leather, comprising a barrel, an extrusion screw rotatably disposed in the barrel, and a driving device connected to the extrusion screw, wherein the extrusion screw comprises a rod body extending in a front-to-back direction and a thread extending helically from front to back along the rod body, characterized in that: The rod body is composed of a feeding section, a plasticizing section and a mixing section from front to back, the bottom diameter of the mixing section is larger than the bottom diameter of the feeding section, the outer diameter of the thread is unchangedly arranged in the feeding section, the plasticizing section and the mixing section, the length of the plasticizing section is larger than the length of the feeding section and the mixing section, a spirally extending liquid phase groove is provided on the thread of the plasticizing section, the volume of the liquid phase groove gradually increases from front to back, the groove depth of the liquid phase groove gradually decreases from front to back, and the groove width of the liquid phase groove gradually increases from front to back; the mixing section is also provided with mixing groups spaced from front to back, each of the mixing groups includes a plurality of round pins sequentially arranged along the circumference of the rod body, each of the round pins extends along the radial direction of the rod body and avoids the thread arrangement, and the outer diameter of each of the mixing groups is consistent with the outer diameter of the thread.

2. The high-yield extruder according to claim 1, characterized in that The liquid phase groove separates the thread into a main screw ridge and a secondary screw ridge, the rear end face of the main screw ridge, the front end face of the secondary screw ridge and the outer surface of the rod body form the liquid phase groove, and the rear end face of the secondary screw ridge, the front end face of the main screw ridge and the outer surface of the rod body form a solid phase groove.

3. The high-yield extruder according to claim 2, characterized in that The volume of the solid phase groove gradually decreases from front to back, the groove depth of the solid phase groove gradually decreases from front to back, and the groove width of the solid phase groove gradually decreases from front to back.

4. The high-yield extruder according to claim 1, characterized in that The bottom diameter of the mixing section is 1.3-1.5 times the bottom diameter of the feeding section.

5. The high-yield extruder according to claim 1, characterized in that The barrel is provided with a feeding port for material entry, a discharging port for material output and an extrusion channel for installation of the extrusion screw, the extrusion channel is connected with the feeding port and the discharging port, the feeding port corresponds to the position of the feeding section and is arranged near the front end of the feeding section.

6. The high-yield extruder according to claim 5, characterized in that The inner wall surface of the barrel is provided with a plurality of straight grooves arranged in sequence around the circumference of the extrusion channel, each of the straight grooves extends in the front-to-back direction, the plurality of straight grooves correspond to the position of the feeding section and are arranged away from the feeding port.

7. The high-yield extruder according to claim 1, characterized in that It also comprises a plurality of far-infrared heating coils, which are sleeved on the outside of the barrel from front to back.

8. The high-yield extruder according to claim 1, characterized in that The driving device comprises a reduction box and a driving motor. The reduction box is drivingly connected between the extrusion screw and the driving motor. The driving motor is an induction servo motor.

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