Spinning device based on liquid crystal polyarylate fibers

Abstract

The utility model belongs to the technical field of spinning, and discloses a spinning device based on liquid crystal polyarylate fibers, which comprises a support base, a screw conveyor positioned in the middle of the support base, and a mixing structure positioned above the screw conveyor, the mixing structure comprises two mounting frames mounted outside the screw conveyor, a stirring barrel mounted at the tops of the two mounting frames and a servo motor located below the stirring barrel, the mixing structure is matched with the screw conveyor, liquid crystal polyarylester fibers and corresponding additives are placed in the stirring barrel, and the liquid crystal polyarylester fibers and the corresponding additives are uniformly mixed. And then the servo motor is started to drive the meshing wheel A tightly connected with the servo motor to quickly and stably rotate, meanwhile, the meshing wheel A drives the meshing wheel B and the meshing wheel C to rotate, and in the high-speed rotation process of the meshing wheel A and the meshing wheel C, the outer rod and the inner rod which are connected with the meshing wheel A and the meshing wheel C can present the coaxial reverse rotation effect, so that strong and complex shearing force is generated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the spinning technical field, concretely is a kind of spinning device based on liquid crystal polyarylate fiber. BACKGROUND

[0002] The spinning device based on liquid crystal polyarylate fiber is a kind of equipment specially used for processing liquid crystal polyarylate material into fiber form, and the liquid crystal polyarylate has excellent properties such as high strength, high modulus, high temperature resistance and chemical corrosion resistance, so that the fiber made of the liquid crystal polyarylate has wide application prospects in many fields such as aerospace, automobile manufacturing, electronics and electrical appliances, and protective equipment, and the spinning device is composed of a discharging structure, a spinning structure, a cooling structure, a stretching structure and a winding structure.

[0003] The existing spinning device based on liquid crystal polyarylate fiber has the following disadvantages: the existing spinning device generally uses a spiral feeder as the discharging structure, however, this traditional transmission method has obvious limitations, and the spiral feeder mainly undertakes the function of material pushing, and a high-efficiency and professional mixing mechanism is not integrated in the spiral feeder; in actual production, liquid crystal polyarylate chips as the basic raw material for fiber forming need to participate in the spinning process together with other functional additives; due to the lack of effective mixing mechanism in the spiral feeder, the liquid crystal polyarylate chips and the additives cannot be fully and uniformly mixed when entering the spinning machine; this uneven mixing will cause a series of chain reactions in the subsequent spinning process; in the initial stage of spinning, due to the differences in melting characteristics and flow performance of the components of the material, the pressure fluctuation in the extrusion process will significantly increase, and then the pushing speed of the material in the screw will become inconsistent, which not only weakens the stability of production, but also may cause obvious unevenness in temperature and composition of the extruded melt; when the uneven melt passes through the spinneret for spinning, the adverse effects will be directly reflected in the quality of the fiber, and the diameter, strength, modulus and chemical properties of the fiber will all have large fluctuations, so that the uniformity and consistency of the product cannot be guaranteed. CONTENT OF THE UTILITY MODEL

[0004] To solve the problems in the background art, the utility model provides a spinning device based on liquid crystal polyarylate fiber, which comprises a supporting base, a screw conveyor located in the middle of the supporting base, and a mixing structure located above the screw conveyor.

[0005] The mixing structure comprises two mounting frames mounted on the outside of the screw conveyor and a stirring cylinder mounted on the top of the two mounting frames, and a servo motor located below the stirring cylinder; an extension block is mounted on the right side surface of the mounting frame; a discharging cylinder is mounted on the top of the extension block, and a gas cylinder is mounted on the right side of the discharging cylinder.

[0006] Preferably, the output end of the air cylinder is fixedly connected with a push rod, and the bottom of the push rod is provided with a filter screen in the inside of the discharging cylinder.

[0007] Preferably, the bottom of the discharging cylinder is communicated with a discharging pipe, and the inside of the discharging pipe is provided with a solenoid valve.

[0008] Preferably, the output end of the servo motor is fixedly connected with an A engaging wheel, the outside of the A engaging wheel is engagedly connected with a B engaging wheel, and the outside of the B engaging wheel is engagedly connected with a C engaging wheel.

[0009] Preferably, the top of the C engaging wheel is provided with an outer rod, and the outside of the outer rod is provided with A stirring rods arranged in a linear distribution.

[0010] Preferably, the top of the A engaging wheel is provided with an inner rod arranged outside the outer rod and extending above the outer rod, and the outside of the outer rod is provided with B stirring rods.

[0011] Preferably, the discharging pipe is communicated with the screw conveyor, and the stirring cylinder and the discharging cylinder are provided with a communicating pipe communicated therebetween.

[0012] Compared with the prior art, the present application has the following advantages:

[0013] The present application is characterized in that the mixing structure is combined with the screw conveyor, the liquid crystal polyarylate fiber and the corresponding additives are placed in the stirring cylinder, the servo motor is started to drive the A engaging wheel to rotate rapidly and stably, at the same time, the A engaging wheel drives the B engaging wheel and the C engaging wheel to rotate, in the process of high-speed rotation of the A engaging wheel and the C engaging wheel, the outer rod and the inner rod connected therewith are coaxially reversed, thereby generating strong and complex shear force and stirring flow field, and the A stirring rods arranged on the outer rod and the B stirring rods arranged on the inner rod are driven to rotate at different rotating directions and speeds in the stirring cylinder, the mixed material is stably transmitted to the discharging cylinder through the communicating pipe, the impurity particles, the insufficiently dissolved lumps and other foreign matters in the material are effectively intercepted and removed through the filter screen, and finally, the pure and mixed material falling into the discharging cylinder is transmitted to the screw conveyor through the discharging pipe directly connected with the screw conveyor. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the present application;

[0015] Figure 2 It is a whole cross-section structure schematic view of the present application;

[0016] Figure 3It is a front view schematic diagram of the utility model;

[0017] Figure 4 It is a top view schematic diagram of the utility model;

[0018] Figure 5 It is a mixing structure schematic diagram of the utility model.

[0019] In the figure: 1, support base; 2, screw transmission machine; 3, mixing structure; 31, mounting frame; 32, stirring drum; 33, servo motor; 331, A meshing wheel; 332, B meshing wheel; 333, C meshing wheel; 334, outer rod; 335, A stirring rod; 336, inner rod; 337, B stirring rod; 34, extension block; 35, discharging cylinder; 351, discharging pipe; 36, air cylinder; 37, push rod; 38, filter screen. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] As Figures 1 to 5 shown, the utility model provides a kind of spinning device based on liquid crystal polyarylate fiber, including support base 1 and the screw transmission machine 2 in the middle part of support base 1, and the mixing structure 3 above screw transmission machine 2;

[0022] Mixing structure 3 includes two mounting frames 31 mounted on the outside of screw transmission machine 2 and stirring drum 32 mounted on the top of two mounting frames 31, and servo motor 33 below stirring drum 32, extension block 34 is installed on the right side of mounting frame 31, and discharging cylinder 35 is installed on the top of extension block 34 and air cylinder 36 is installed on the right side of discharging cylinder 35.

[0023] Adopting the above scheme: through the cooperation of the mixing structure 3 and the screw conveyor 2, the liquid crystal polyarylate fiber and the corresponding additives are placed in the stirring cylinder 32, and then the servo motor 33 is started to drive the A meshing wheel 331 to rotate quickly and stably, at the same time, the A meshing wheel 331 drives the B meshing wheel 332 and the C meshing wheel 333 to rotate, in the process of high-speed rotation of the A meshing wheel 331 and the C meshing wheel 333, the outer rod 334 and the inner rod 336 connected therewith will present the effect of coaxial counter-rotation, thereby generating strong and complex shear force and stirring flow field, and then driving the A stirring rod 335 installed on the outer rod 334 and the B stirring rod 337 on the inner rod 336 to rotate at different rotating directions and speeds in the stirring cylinder 32, the uniformly mixed material will be stably transmitted to the feeding cylinder 35 through the connecting pipe, after the material enters the feeding cylinder 35, the impurity particles, the not fully dissolved lumps and other foreign matters that may exist in the material will be effectively intercepted and removed through the filter screen 38, finally, the pure and uniformly mixed material falling into the feeding cylinder 35 can be transmitted to the screw conveyor 2 in a stable and continuous flow through the feeding pipe 351 directly connected with the screw conveyor 2.

[0024] As shown in Figures 1 to 5 , the output end of the air cylinder 36 is fixedly connected with the push rod 37, the bottom of the push rod 37 is installed with the filter screen 38, the filter screen 38 is located in the inside of the feeding cylinder 35, the bottom of the feeding cylinder 35 is communicated with the feeding pipe 351 and the inside of the feeding pipe 351 is provided with the electromagnetic valve.

[0025] Adopting the above scheme: during the transmission of the mixture of the liquid crystal polyarylate fiber and the additives, there will inevitably be some not fully mixed large particle materials, impurities or foreign matters, the filter screen 38 can intercept these impurities that do not meet the spinning requirements to avoid entering the subsequent equipment such as the screw conveyor 2, thereby preventing the equipment from being blocked due to the impurities.

[0026] As shown in Figures 1 to 5 , the output end of the servo motor 33 is fixedly connected with the A meshing wheel 331, the outside of the A meshing wheel 331 is meshingly connected with the B meshing wheel 332, the outside of the B meshing wheel 332 is meshingly connected with the C meshing wheel 333, the top of the C meshing wheel 333 is installed with the outer rod 334, and the outside of the outer rod 334 is provided with the A stirring rod 335 in linear distribution.

[0027] Adopting the above scheme: the rotation of the outer rod 334 drives the A stirring rod 335 to rotate around the shaft, the A stirring rod 335 will turn and shear the material at different radial positions, so that the material not only can realize the circular flow in the up-down direction in the stirring cylinder 32, but also can be fully mixed in the horizontal direction, avoiding the accumulation and uneven mixing of the material in the local area, thereby realizing the efficient stirring effect.

[0028] As Figures 1 to 5 shown, the top of the A engaging wheel 331 is provided with an inner rod 336 outside the outer rod 334 and the inner rod 336 extends above the outer rod 334, the outer part of the outer rod 334 is provided with a B stirring rod 337, and the blanking pipe 351 is connected with the screw conveyor 2, and the stirring cylinder 32 and the blanking cylinder 35 are provided with a communication pipe connected with each other.

[0029] By the above scheme: the stirring cylinder 32 and the blanking cylinder 35 are connected through the communication pipe, and the blanking pipe 351 is connected with the screw conveyor 2, and the integrated design ensures smooth transmission of the material in the whole production process, and the mixed material can enter the blanking cylinder 35 through the communication pipe under the action of gravity or appropriate pressure, avoiding the blockage and accumulation of the material in the transmission process, and the direct connection of the blanking pipe 351 and the screw conveyor 2 enables the material to quickly and accurately enter the screw conveyor 2.

[0030] The working principle of the utility model:

[0031] Firstly, the liquid crystal polyarylate fiber and various additives accurately weighed are put into the stirring cylinder 32 to ensure uniform material feeding, then the servo motor 33 is started to drive the A engaging wheel 331 to rotate quickly, the A engaging wheel 331 drives the B engaging wheel 332 and the C engaging wheel 333 to rotate in turn, in the process, the outer rod 334 and the inner rod 336 are coaxially reversed, so that the A stirring rod 335 and the B stirring rod 337 are strongly stirred in different directions and speeds, in the stirring process, the material is turned over and mixed in all directions under the action of complex shear force and flow field, the fiber and the additives are gradually uniformly mixed to form high-quality mixed material, after the stirring is completed, the mixed material flows into the blanking cylinder 35 through the communication pipe under the action of gravity, at this time, the cylinder 36 pushes the push rod 37 to make the filter screen 38 in the appropriate position, the filter screen 38 finely filters the flowing material, intercepts impurity particles, unsolved lumps and other foreign matters, ensures that the material in the blanking pipe 351 is pure and clean, finally, the electromagnetic valve in the blanking pipe 351 accurately controls the material flow according to the demand of the screw conveyor 2, and the pure and uniformly mixed material is stably and continuously conveyed into the screw conveyor 2, providing high-quality raw materials for the subsequent melting, spinning and other processes, and ensuring the efficient, stable and high-quality operation of the whole spinning production process.

[0032] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0033] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A spinning device based on liquid crystal polyarylate fiber, characterized in that: It includes a support base (1) and a screw conveyor (2) located in the middle of the support base (1), and a mixing structure (3) located above the screw conveyor (2); The mixing structure (3) includes two mounting frames (31) installed outside the screw conveyor (2) and a mixing drum (32) installed on the top of the two mounting frames (31), and a servo motor (33) located below the mixing drum (32). An extension block (34) is installed on the right side of the mounting frame (31), and a feeding cylinder (35) is installed on the top of the extension block (34), and a cylinder (36) is installed on the right side of the feeding cylinder (35).

2. The spinning apparatus based on liquid crystal polyarylate fiber according to claim 1, characterized in that: The output end of the cylinder (36) is fixedly connected to a push rod (37), and a filter screen (38) is installed at the bottom of the push rod (37). The filter screen (38) is located inside the feed cylinder (35).

3. The spinning apparatus based on liquid crystal polyarylate fiber according to claim 2, characterized in that: The bottom of the feeding cylinder (35) is connected to the feeding pipe (351), and the inside of the feeding pipe (351) is equipped with a solenoid valve.

4. The spinning apparatus based on liquid crystal polyarylate fiber according to claim 3, characterized in that: The output end of the servo motor (33) is fixedly connected to an A meshing wheel (331), the A meshing wheel (331) is externally meshed with a B meshing wheel (332), and the B meshing wheel (332) is externally meshed with a C meshing wheel (333).

5. A spinning apparatus based on liquid crystal polyarylate fiber according to claim 4, characterized in that: The top of the C meshing wheel (333) is equipped with an outer rod (334), and the outside of the outer rod (334) is provided with A stirring rods (335) that are linearly distributed.

6. The spinning apparatus based on liquid crystal polyarylate fiber according to claim 5, characterized in that: The top of the A meshing wheel (331) is fitted with an inner rod (336) located outside the outer rod (334) and the inner rod (336) extends above the outer rod (334). The outer rod (334) is fitted with a B stirring rod (337).

7. A spinning apparatus based on liquid crystal polyarylate fiber according to claim 3, characterized in that: The feeding pipe (351) is connected to the screw conveyor (2), and a connecting pipe is provided between the mixing cylinder (32) and the feeding cylinder (35).

Images