Preparation equipment and process of nylon composite material

Abstract

The application relates to a preparation device and a preparation process of a nylon composite material. The preparation device comprises a mixing mechanism, an extruding mechanism, a filtering mechanism and a granulating mechanism arranged in sequence. The mechanisms work cooperatively. In the preparation process, raw materials are prepared first, and then the raw materials are subjected to mixing, extruding, filtering, granulating and post-processing. The stirring time and speed are accurately controlled during mixing. The temperature of each extruding section and the rotating speed of a spiral auger are strictly controlled. Impurities are removed without stopping the machine during filtering by moving a filtering screen. The granulating speed is adjusted according to the extruding speed during granulating. The drying temperature and time are strictly controlled during post-processing. The application effectively solves the problems of uneven mixing, difficult impurity removal and low granulating precision in the traditional preparation mode, and can prepare the nylon composite material with excellent comprehensive performance, thereby remarkably improving the product quality and production efficiency.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of material preparation, and particularly relates to a preparation device and a preparation process of a nylon composite material. BACKGROUND

[0002] The nylon material has a wide application in many fields such as automobile manufacturing, electronic appliances, aerospace and the like due to its excellent mechanical properties, good wear resistance and excellent chemical corrosion resistance. However, with the increasing requirement of material properties in various industries, the single nylon material gradually exposes limitations in some aspects. For example, the strength, toughness and heat resistance cannot meet the demand of high-end products. In order to make up for these deficiencies, it is inevitable to prepare a nylon composite material with better performance.

[0003] At present, the traditional preparation device and process of the nylon composite material have many problems. In the mixing link, the existing mixing device has a single stirring mode, which is difficult to fully and uniformly mix the nylon raw material, the additive and the reinforcing material, so that the performance of the composite material is unstable. In the extrusion process, the screw design is unreasonable, the conveying, compression, melting and mixing effects of the material are poor, the processing efficiency is low, and the quality of the product is also affected. Moreover, in the traditional process, there is a lack of effective filtering means, and it is difficult to remove the impurities and the particles that are not fully mixed in the material, so that the final product has defects. In addition, the cutting link also has problems such as uneven cutting size and low precision, which affects the subsequent application of the product. These problems seriously limit the further application and development of the nylon composite material in high-end fields, and therefore, it is of great practical significance to develop a new preparation device and process of the nylon composite material. SUMMARY

[0004] The application mainly aims at the problems of uneven mixing, low processing efficiency, unstable product performance, incomplete impurity removal and low cutting precision in the preparation process of the nylon composite material in the prior art, and provides a preparation device and a preparation process of the nylon composite material, so as to prepare the nylon composite material with excellent comprehensive performance.

[0005] The purpose of the application is mainly achieved by the following scheme:

[0006] On one hand, the application provides a preparation device of a nylon composite material, which comprises a mixing mechanism, an extrusion mechanism, a filtering mechanism and a cutting mechanism arranged in sequence.

[0007] The mixing mechanism comprises a first support frame, a mixing tank is mounted on the top of the first support frame, a discharging assembly is mounted on one side of the top of the mixing tank, a stirring assembly is mounted in the mixing tank, and a discharge port is arranged on the bottom of the mixing tank away from the discharging assembly, the first support frame is provided with a first driving assembly for driving the discharging assembly to operate and a second driving assembly for driving the stirring assembly to operate;

[0008] The extruding mechanism comprises a second support frame and a first conveying cylinder, a spiral auger is rotatably connected in the first conveying cylinder and is driven to operate by the second driving assembly, a receiving hopper is arranged on one side of the first conveying cylinder below the discharge port, and the first conveying cylinder is sequentially provided with a conveying section, a compression section, a melting section and a mixing section along the conveying direction of the material;

[0009] The filtering mechanism comprises a filtering box and a filtering screen, first material conveying channels are arranged through the left and right sides of the filtering box, the two ends of the first material conveying channels are connected with the extruding mechanism and the pelletizing mechanism respectively, through-slots are arranged through the front and back sides of the filtering box through the first material conveying channels, the filtering screen is inserted into the through-slots, and the two ends of the filtering screen are respectively provided with a discharging assembly and a collecting assembly;

[0010] The pelletizing mechanism comprises a second conveying cylinder and an extruding column fixedly arranged in the second conveying cylinder, a second material conveying channel is formed between the extruding column and the inner wall of the second conveying cylinder, a plurality of protrusions are uniformly circumferentially arranged on the outer side wall of the end of the extruding column away from the filtering mechanism along the axis of the extruding column, a forming channel is formed between the protrusions, the outer wall of the extruding column and the inner wall of the second conveying cylinder, and a support column is coaxially arranged on the end of the extruding column extending out of the second conveying cylinder, and a pelletizing assembly is coaxially mounted on the support column.

[0011] Preferably, the discharging assembly comprises a discharging cylinder, a discharging hopper, a first rotating shaft and a stirring group mounted on the side wall of the first rotating shaft, the bottom of the discharging cylinder is communicated with one side of the top of the mixing tank, the discharging hopper is mounted on one side of the top of the discharging cylinder, the first rotating shaft is rotatably connected in the discharging cylinder, and the stirring group comprises a plurality of stirring pieces uniformly arranged along the length direction of the first rotating shaft, and the plurality of stirring pieces are connected by connecting columns.

[0012] Preferably, the stirring assembly comprises a second rotating shaft and a stirring group mounted on the side wall of the second rotating shaft, the second rotating shaft is rotatably connected in the mixing tank, and the stirring group comprises a plurality of first stirring rods uniformly arranged along the length direction of the second rotating shaft, and the plurality of first stirring rods are connected by a second stirring rod.

[0013] Preferably, the first driving assembly comprises a first driving motor, a first pulley, a second pulley and a transmission belt, the output end of the first driving motor is fixedly sleeved with the first pulley, one end of the first rotating shaft is fixedly sleeved with the second pulley through the side wall of the discharging cylinder, and the first pulley and the second pulley are connected through the transmission belt; the second driving assembly comprises a second driving motor, a third pulley, a fourth pulley, a fifth pulley, a sixth pulley, a seventh pulley, a linkage rod and a transmission belt, the output end of the second driving motor is fixedly sleeved with the third pulley, one end of the spiral auger is fixedly sleeved with the fourth pulley through the first conveying cylinder, the linkage rod is rotatably connected to the first support frame, the fifth pulley and the sixth pulley are fixedly sleeved at two ends of the linkage rod respectively, one end of the second rotating shaft is fixedly sleeved with the seventh pulley through the side wall of the mixing tank, and the third pulley, the fourth pulley, the fifth pulley, the sixth pulley and the seventh pulley are connected through the transmission belt.

[0014] Preferably, the outer side walls of the conveying section, the compression section, the melting section and the mixing section are sleeved with heating assemblies, and temperature sensors are installed at the conveying section, the compression section, the melting section and the mixing section.

[0015] Preferably, the discharging assembly and the collecting assembly both comprise an internally hollow mounting cylinder, the side wall of the mounting cylinder is provided with an opening through which a filter screen passes, and a winding roller is rotatably connected in the interior of the mounting cylinder, the filter screen is wound on the side wall of the winding roller, and the collecting assembly further comprises a third driving motor which can drive the winding roller of the collecting assembly to rotate.

[0016] Preferably, the extrusion column is sequentially provided with an expanding section, a first stabilizing section, a reducing section and a second stabilizing section along the flow direction of the material, the boss is located at the end of the second stabilizing section, the inner wall of the second conveying cylinder is matched with the shape of the extrusion column, and the end face of the second stabilizing section, the end face of the second conveying cylinder and the side face of the boss are located on the same horizontal plane.

[0017] Preferably, the pelletizing assembly comprises a fourth driving motor, a cutter holder and a bearing, the fourth driving motor is fixed on the second support frame, the output end of the fourth driving motor is fixedly connected with one side of the cutter holder, the other side of the cutter holder is rotatably connected between the bearing and the supporting column, at least one side notch is arranged on the side wall of the cutter holder, a pelletizing blade is installed in the notch, and the cutting edge of the pelletizing blade is close to the end of the forming channel.

[0018] In another aspect, the application provides a preparation process of a nylon composite material, comprising the following steps:

[0019] S1, raw material preparation: accurately weigh the nylon raw material, various additives and reinforcing materials according to the predetermined proportion, and place the weighed raw materials in the corresponding storage containers for standby;

[0020] S2, mixing operation: start the first driving assembly and the second driving assembly, so that the discharging assembly and the stirring assembly start to work, the raw materials in the storage container are added to the mixing tank through the discharging assembly, and at the same time, the stirring assembly stirs and mixes the raw materials entering the mixing tank, the stirring time is controlled to be 15-30 minutes, and the stirring speed is kept at 500-800 revolutions / minute, so as to ensure that various raw materials are uniformly mixed initially;

[0021] S3, extrusion operation: the mixed material falls into the receiving hopper through the discharge port, enters the first conveying cylinder, and the second driving assembly drives the spiral auger to rotate, so that the material is sequentially conveyed through the conveying section, the compression section, the melting section and the mixing section, and the rotating speed of the spiral auger is controlled to be 300-500 revolutions / minute, so that the material completes conveying, compression, melting and sufficient mixing in different stages;

[0022] S4, filtering operation: the material extruded from the extrusion mechanism enters the first material conveying channel of the filter box, and when the material passes through, the filter screen is used to filter the material to remove impurities and particles that are not fully mixed in the material; the filter screen is moved once every interval time through the cooperation of the discharging assembly and the receiving assembly, so as to ensure the filtering effect;

[0023] S5, pelletizing operation: the filtered material enters the second material conveying channel between the second conveying cylinder and the extrusion column, when the material enters the forming channel through the second material conveying channel, the pelletizing assembly is started to cut the formed material, forming nylon composite material particles of the required length, the pelletizing speed is adjusted according to the extrusion speed of the material, so as to ensure uniform pelletizing, and the particle length error is controlled to be within ±0.5mm;

[0024] S6, post-processing: the nylon composite material particles after pelletizing are collected, and subsequent drying treatment is carried out according to the need, the drying temperature is controlled to be 60-80℃, and the drying time is 2-4 hours.

[0025] As preferred, in the step S3, the temperature of the conveying section is controlled to be 200-220℃, the temperature of the compression section is controlled to be 220-240℃, the temperature of the melting section is controlled to be 240-260℃, and the temperature of the mixing section is controlled to be 260-280℃.

[0026] In summary, compared with the prior art, the present application has the following beneficial technical effects:

[0027] (1) The mixing mechanism in the application is provided with a discharging assembly and a stirring assembly, the discharging assembly is assisted by the stirring assembly, the stirring assembly is connected by multiple rods, and the power transmission of the first driving assembly and the second driving assembly is matched, so that various raw materials can be fully and uniformly mixed, and the performance stability of the composite material is improved;

[0028] (2) The spiral auger of the extruding mechanism in the application is driven by the second driving assembly, and in combination with the different function designs of each section and the cooperation of the heating assembly and the temperature sensor, the material can be efficiently transported, compressed, melted and mixed, and the processing efficiency and product quality are improved;

[0029] (3) The filtering mechanism in the application is matched with the discharging assembly and the material collecting assembly, so that the filter screen can continuously move, impurities and particles that are not fully mixed in the material can be effectively removed, the purity and quality of the product are ensured, and the filter screen can be replaced without stopping;

[0030] (4) The cutting mechanism in the application is provided with an extrusion column, a second conveying cylinder and a cutting assembly, so that the cutting speed can be adjusted according to the extrusion speed of the material, the cutting is uniform, the particle length error is controlled in a very small range, and the high-precision requirement of different products on the particle size is met;

[0031] (5) The time, speed, temperature and other parameters of each link in the preparation process of the application are accurately controlled, so that the stability and consistency of the product quality are further ensured, and the application range of the nylon composite material in the high-end field is expanded. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a structural schematic view of the application;

[0033] Figure 2 is a structural schematic view of the mixing mechanism in the application;

[0034] Figure 3 is a structural schematic view of the discharging piece in the application;

[0035] Figure 4 is a structural schematic view of the mixing tank in the application;

[0036] Figure 5 is a structural schematic view of the extruding mechanism in the application;

[0037] Figure 6 is a structural schematic view of the extruding mechanism in the application;

[0038] Figure 7 is a front view of the filtering mechanism in the application;

[0039] Figure 8 is a structural schematic view of the filtering mechanism in the application;

[0040] Figure 9 is the structural schematic diagram of the cutting mechanism in the application;

[0041] Figure 10 is the structural schematic diagram of the tool holder in the application.

[0042] Fig. 1 is a mixing mechanism, Fig. 2 is an extruding mechanism, Fig. 3 is a filtering mechanism, Fig. 4 is a cutting mechanism, Fig. 5 is a first supporting frame, Fig. 6 is a mixing tank, Fig. 7 is a discharge port, Fig. 8 is a second supporting frame, Fig. 9 is a first conveying cylinder, Fig. 10 is a spiral auger, Fig. 11 is a receiving hopper, Fig. 12 is a conveying section, Fig. 13 is a compression section, Fig. 14 is a melting section, Fig. 15 is a mixing section, Fig. 16 is a filtering box, Fig. 17 is a filter screen, Fig. 18 is a first material conveying channel, Fig. 19 is a passing groove, Fig. 20 is a discharging assembly, Fig. 21 is a receiving assembly, Fig. 22 is a second conveying cylinder, Fig. 23 is an extruding column, Fig. 24 is a second material conveying channel, Fig. 25 is a boss, Fig. 26 is a forming channel, Fig. 27 is a supporting column, Fig. 28 is a discharging cylinder, Fig. 29 is a discharging hopper, Fig. 30 is a first rotating shaft, Fig. 31 is a pushing piece, Fig. 32 is a connecting column, Fig. 33 is a second rotating shaft, Fig. 34 is a first stirring rod, Fig. 35 is a second stirring rod, Fig. 36 is a first driving motor, Fig. 37 is a first belt pulley, Fig. 38 is a second belt pulley, Fig. 39 is a transmission belt, Fig. 40 is a second driving motor, Fig. 41 is a third belt pulley, Fig. 42 is a fourth belt pulley, Fig. 43 is a fifth belt pulley, Fig. 44 is a sixth belt pulley, Fig. 45 is a seventh belt pulley, Fig. 46 is a linkage rod, Fig. 47 is a heating assembly, Fig. 48 is a mounting cylinder, Fig. 49 is a winding roller, Fig. 50 is a third driving motor, Fig. 51 is an expanding section, Fig. 52 is a first stabilizing section, Fig. 53 is a reducing section, Fig. 54 is a second stabilizing section, Fig. 55 is a fourth driving motor, Fig. 56 is a tool holder, Fig. 57 is a bearing, Fig. 58 is a slot, and Fig. 59 is a cutting blade. DETAILED DESCRIPTION

[0043] The technical solutions of the present application will be further described below with specific examples and in conjunction with the drawings. It should be understood that the implementation of the present application is not limited to the following examples, and any form of modification and / or change made to the present application will fall within the scope of protection of the present application.

[0044] Example 1:

[0045] As shown in the drawings, Figure 1 the present application discloses a technical solution, a preparation equipment of nylon composite material, which comprises a mixing mechanism 1, an extruding mechanism 2, a filtering mechanism 3 and a cutting mechanism 4 arranged in sequence; the mixing mechanism 1 is used for preliminarily mixing raw materials, the extruding mechanism 2 is used for conveying, compressing, melting and mixing the mixed materials, the filtering mechanism 3 is used for removing impurities and insufficiently mixed particles in the materials, and the cutting mechanism 4 is used for cutting the materials into nylon composite material particles of a required length.

[0046] As shown in the drawings, Figure 2As shown, the mixing mechanism 1 comprises a first support frame 5, a mixing tank 6 is bolted or welded to the top of the first support frame 5, a discharging assembly is fixedly installed on the top right side of the mixing tank 6, a stirring assembly is installed in the mixing tank 6, and a discharge port 7 is installed on the bottom left side of the mixing tank 6, a valve is installed at the discharge port 7 to facilitate the control of discharging, and the first support frame 5 is provided with a first driving assembly for driving the discharging assembly to operate and a second driving assembly for driving the stirring assembly to operate.

[0047] As shown in Figure 3 The discharging assembly comprises a discharging cylinder 28, a discharging hopper 29, a first rotating shaft 30, and a raking group installed on the side wall of the first rotating shaft 30. The bottom of the discharging cylinder 28 is communicated with the top right side of the mixing tank 6, the discharging hopper 29 is bolted or welded to the top rear side of the discharging cylinder 28, the two ends of the first rotating shaft 30 are rotatably connected in the discharging cylinder 28 through bearings, the raking group comprises a plurality of raking pieces 31 uniformly arranged along the length direction of the first rotating shaft 30, the raking pieces 31 are designed in a cross shape and are welded to the side wall of the first rotating shaft 30, and a plurality of raking pieces 31 are connected through a welded connecting column 32. The first rotating shaft 30 is driven to rotate by the first driving assembly, thereby driving the raking group to discharge the raw materials.

[0048] As shown in Figure 3 The stirring assembly comprises a second rotating shaft 33 and a stirring group installed on the side wall of the second rotating shaft 33. The two ends of the second rotating shaft 33 are rotatably connected in the mixing tank 6 through bearings, the stirring group comprises a plurality of first stirring rods 34 uniformly arranged along the length direction of the second rotating shaft 33, the first stirring rods 34 are vertically welded to the side wall of the second rotating shaft 33, and a plurality of first stirring rods 34 are connected through a welded second stirring rod 35. The second rotating shaft 33 is driven to rotate by the second driving assembly, thereby driving the stirring group to stir and mix the raw materials.

[0049] The embodiment provides a specific structure of the first driving assembly and the second driving assembly, the first driving assembly comprises a first driving motor 36, a first belt pulley 37, a second belt pulley 38 and a transmission belt 39, the first driving motor 36 is fixedly installed on the side wall of the first support frame 5 through bolts, the output end of the first driving motor 36 is fixedly sleeved with the first belt pulley 37, the right end of the first rotating shaft 30 is fixedly sleeved with the second belt pulley 38 through the side wall of the discharging cylinder 28, and the first belt pulley 37 and the second belt pulley 38 are connected through the transmission belt 39; the second driving assembly comprises a second driving motor 40, a third belt pulley 41, a fourth belt pulley 42, a fifth belt pulley 43, a sixth belt pulley 44, a seventh belt pulley 45, a linkage rod 46 and the transmission belt 39, the second driving motor 40 is fixedly installed on the bottom of the first support frame 5 through bolts, the output end of the second driving motor 40 is fixedly sleeved with the third belt pulley 41, the side wall of the third belt pulley 41 is provided with two circles of grooves for installing the transmission belt 39, the right end of the spiral auger 10 is fixedly sleeved with the fourth belt pulley 42 after penetrating through the first conveying cylinder 9, the two ends of the linkage rod 46 are rotatably connected to the first support frame 5 through bearing seats, and the fifth belt pulley 43 and the sixth belt pulley 44 are fixedly sleeved on the two ends of the linkage rod 46, respectively, the right end of the second rotating shaft 33 is fixedly sleeved with the seventh belt pulley 45 through the side wall of the mixing tank 6, and the third belt pulley 41 and the fourth belt pulley 42, the third belt pulley 41 and the fifth belt pulley 43 and the sixth belt pulley 44 and the seventh belt pulley 45 are connected through the transmission belt 39; the first driving assembly and the second driving assembly are driven through the belt pulley and the transmission belt, and the structure is simple and the transmission is stable.

[0050] As shown in Figure 5 , 6 , the extrusion mechanism 2 comprises a second support frame 8 and a first conveying cylinder 9, the first conveying cylinder 9 is fixedly installed on the second support frame 8 through bolts, the spiral auger 10 is rotatably connected in the first conveying cylinder 9 through a bearing, and the spiral auger 10 is driven to work through the second driving assembly, the right side upper portion of the first conveying cylinder 9 is welded with a material receiving hopper 11 located below the discharging port 7, the body of the spiral auger 10 gradually expands in diameter along the flow direction of the material, the first conveying cylinder 9 is sequentially provided with a conveying section 12, a compression section 13, a melting section 14 and a mixing section 15 along the conveying direction of the material, and the outer side walls of the sections are all sleeved with heating assemblies 47, and are all provided with temperature sensors, the heating assembly 47 can adopt an electric heating sleeve, and the specific structure and working principle of the electric heating sleeve and the temperature sensor are all prior art, and details are not described herein.

[0051] As shown in Figure 7 , 8As shown, the filtering mechanism 3 includes a filtering box 16 and a filtering screen 17, a circular first conveying channel 18 is arranged through the middle of the left and right sides of the filtering box 16, the two ends of the first conveying channel 18 are connected with the extruding mechanism 2 and the pelletizing mechanism 4 respectively, and the extruding mechanism 2 and the pelletizing mechanism 4 are detachably fixedly connected between the side wall of the filtering box 16 through bolts, the front and rear sides of the filtering box 16 are arranged through a passing groove 19 passing through the first conveying channel 18, the height of the passing groove 19 should be not less than the diameter of the first conveying channel 18, so as to ensure that the filtering screen 17 completely covers the first conveying channel 18, the filtering screen 17 is inserted into the passing groove 19, and the two ends of the filtering screen 17 are respectively provided with a discharging assembly 20 and a collecting assembly 21, the discharging and collecting are carried out through the discharging assembly and the collecting assembly, so as to ensure the continuous use of the filtering screen and the filtering effect.

[0052] The embodiment provides a specific structure of the discharging assembly 20 and the collecting assembly 21, the discharging assembly 20 and the collecting assembly 21 both include an internally hollow cylindrical mounting cylinder 48, the side wall of the mounting cylinder 48 is vertically arranged with an opening for the filtering screen 17 to pass through, and the inside of the mounting cylinder 48 is vertically rotatably connected with a winding roller 49, the two ends of the filtering screen 17 are respectively wound on the side wall of the two winding rollers 49, and the collecting assembly 21 further includes a third driving motor 50, the third driving motor 50 can drive the winding roller 49 of the collecting assembly 21 to rotate, thereby realizing the movement of the filtering screen 17.

[0053] As shown in the figure, Figure 9 The pelletizing mechanism 4 includes a second conveying cylinder 22 and an extruding column 23 fixedly arranged in the second conveying cylinder 22, the extruding column 23 is sequentially provided with an expanding section 51, a first stable section 52, a reducing section 53 and a second stable section 54 along the flow direction of the material, the expanding section 51 is in a conical structure, the first stable section 52 and the second stable section 54 are in a cylindrical structure, and the reducing section 53 is in a circular truncated cone structure, the side wall of the first stable section 52 is fixedly connected between the second conveying cylinder 22 through a fixed column, and the boss 25 is located at the end of the second stable section 54, the inner wall of the second conveying cylinder 22 is matched with the shape of the extruding column 23, and a second conveying channel 24 is formed between the extruding column 23 and the inner wall of the second conveying cylinder 22, so as to realize the stable conveying and forming of the material, and a circle of bosses 25 is uniformly circumferentially arranged on the outer side wall of the end of the extruding column 23 away from the filtering mechanism 3 along the axis of the extruding column 23, in the embodiment, the bosses 25 gradually incline downward along the flow direction of the material, a forming channel 26 is formed between the boss 25, the outer wall of the extruding column 23 and the inner wall of the second conveying cylinder 22, the end face of the second stable section 54, the end face of the second conveying cylinder 22 and the side face of the boss 25 are located on the same horizontal plane, so as to ensure that the shape of the material after extrusion is stable, the end of the extruding column 23 protruding out of the second conveying cylinder 22 is coaxially provided with a supporting column 27, and a pelletizing assembly is coaxially arranged on the supporting column 27.

[0054] The embodiment provides a specific structure of a cutting assembly, the cutting assembly comprising a fourth driving motor 55, a cutter holder 56 and a bearing 57, the fourth driving motor 55 being fixed on the second support frame 8 through bolts, and the output end of the fourth driving motor 55 being fixedly connected with the left side of the cutter holder 56 through a shaft coupling, the right side of the cutter holder 56 being rotatably connected between the bearing 57 and the support column 27, at least one side notch 58 being arranged on the side wall of the cutter holder 56, and a cutting blade 59 being detachably fixedly arranged in the side notch 58 through bolts, the cutting edge of the cutting blade 59 being close to the outlet of the forming channel 26, and the fourth driving motor 55 can drive the cutter holder 56 and the cutting blade 59 to rotate counterclockwise in the embodiment, so that the cutting assembly can accurately and efficiently cut particles, and a cooling fan can be arranged at the outlet of the forming channel 26 according to actual conditions, so that the cooling effect of the finished product is improved, the cutting of particles is facilitated, and a material receiving member arranged below the outlet of the forming channel 26 is arranged on the second support frame, so that the nylon composite material particles after cutting can be conveniently collected.

[0055] Embodiment 2

[0056] The application also provides a preparation process of the nylon composite material, comprising the following steps:

[0057] S1, raw material preparation: accurately weighing the nylon raw material, various additives and reinforcing materials according to a preset proportion, and placing the weighed raw materials in corresponding storage containers for standby;

[0058] S2, mixing operation: starting the first driving assembly and the second driving assembly, so that the discharging assembly and the stirring assembly start to work, the raw materials in the storage containers are added into the mixing tank 6 through the discharging assembly, and meanwhile, the stirring assembly stirs and mixes the raw materials entering the mixing tank 6, the stirring time is controlled to be 15-30 minutes, and the stirring speed is kept to be 500-800 revolutions per minute, so as to ensure that the various raw materials are preliminarily mixed uniformly;

[0059] S3, extrusion operation: the mixed material falls into the receiving hopper 11 through the discharge port 7, enters the first conveying cylinder 9, and is sequentially conveyed through the conveying section 12, the compression section 13, the melting section 14 and the mixing section 15 by the rotation of the second driving assembly and the screw conveyor 10, the temperature of the conveying section 12 is controlled to be 200-220 DEG C, the temperature of the compression section 13 is controlled to be 220-240 DEG C, the temperature of the melting section 14 is controlled to be 240-260 DEG C, the temperature of the mixing section 15 is controlled to be 260-280 DEG C, and the rotation speed of the screw conveyor 10 is controlled to be 300-500 revolutions per minute, so that the material completes conveying, compression, melting and sufficient mixing at different stages;

[0060] S4, filtering operation: the material extruded from the extrusion mechanism 2 enters the first material conveying channel 18 of the filtering box 16, and the filtering net 17 is used to filter the material when the material passes through, so as to remove impurities and insufficiently mixed particles in the material; the filtering net 17 is moved once every certain time through the cooperation of the discharging assembly 20 and the material collecting assembly 21, so as to ensure the filtering effect;

[0061] S5, pelletizing operation: the filtered material enters the second material conveying channel 24 between the second conveying cylinder 22 and the extrusion column 23, and the pelletizing assembly is started to cut the formed material when the material enters the forming channel 26 through the second material conveying channel 24, so as to form nylon composite particles with a required length, and the pelletizing speed is adjusted according to the extrusion speed of the material, so as to ensure uniform pelletizing and control the length error of the particles within ±0.5mm;

[0062] S6, post-processing: the nylon composite particles after pelletizing are collected, and subsequent drying treatment is carried out according to the requirement, the drying temperature is controlled within 60-80℃, and the drying time is 2-4 hours.

[0063] Example 3:

[0064] The application also provides a preparation process of the nylon composite material, which is different from that of example 2 and comprises the following steps:

[0065] S1, raw material preparation: accurately weigh 80kg of nylon 6 raw material, 15kg of glass fiber, 1kg of antioxidant and 4kg of toughening agent, and place these raw materials in special storage containers, so as to ensure that the storage environment is dry and clean, and to avoid that the raw materials are damp or mixed with other impurities to affect the subsequent preparation effect;

[0066] S2, mixing operation: the first driving assembly and the second driving assembly are started, the first driving motor 36 is started, the first rotating shaft 30 is driven to rotate at high speed through the transmission of the first belt pulley 37, the second belt pulley 38 and the transmission belt 39, the material stirring group installed on the first rotating shaft 30 is composed of a plurality of material stirring pieces 31 connected by connecting columns 32, and in the rotating process, the raw materials in the storage container are sent into the mixing tank 6 from the feeding hopper 29 through the feeding cylinder 28, at the same time, the second driving motor 40 is started, the second rotating shaft 33 is driven to rotate through the linkage of the third belt pulley 41, the fourth belt pulley 42, the fifth belt pulley 43, the sixth belt pulley 44, the seventh belt pulley 45, the linkage rod 46 and the transmission belt 39, and the stirring group on the second rotating shaft 33 is composed of a plurality of first stirring rods 34 connected by second stirring rods 35, so as to stir and mix the raw materials entering the mixing tank 6, the stirring time is set to 20 minutes, and the stirring speed is kept at 600r / min, so as to ensure that various raw materials are fully contacted and uniformly mixed;

[0067] S3, extrusion operation: the mixed material falls into the receiving hopper 11 from the discharge port 7 at the bottom of the mixing tank 6, and then enters the first conveying cylinder 9. The second driving assembly continuously works to drive the screw auger 10 to rotate, pushing the material to pass through the conveying section 12, the compression section 13, the melting section 14 and the mixing section 15 in turn. In the conveying section 12, the temperature is controlled at 210°C, mainly responsible for the stable conveying of the material. The temperature of the compression section 13 is set to 230°C to compress the material and increase the density of the material. The temperature of the melting section 14 is increased to 250°C to completely melt the material. The temperature of the mixing section 15 is maintained at 270°C to further mix the molten material sufficiently to ensure uniformity of the material. The rotating speed of the screw auger 10 is controlled at 400 rpm to ensure that the material can smoothly complete the corresponding processing steps in each stage.

[0068] S4, filtering operation: the molten material extruded from the extrusion mechanism 2 enters the first material conveying channel 18 of the filtering box 16. The third driving motor 50 in the material collecting assembly 21 is intermittently started to drive the winding roller 49 to rotate, winding the filtering screen 17 wound thereon. At the same time, the winding roller 49 of the material discharging assembly 20 rotates synchronously to realize the continuous movement of the filtering screen 17. When the material passes through the first material conveying channel 18, the filtering screen 17 filters the material to effectively remove impurities and insufficiently mixed particles in the material. The filtering screen 17 is replaced every 45 minutes by starting the third driving motor 50 to ensure that the filtering effect always remains in good condition.

[0069] S5, pelletizing operation: the filtered material enters the second material conveying channel 24 between the second conveying cylinder 22 and the extrusion column 23. When the material passes through the enlarged section 51 on the extrusion column 23, it gradually adapts to the change in the channel, enters the first stable section 52, and the material is kept stable conveying. After passing through the reduced section 53, the material is further extruded. After the material is stable in the second stable section 54, it enters the forming channel 26. At this time, the fourth driving motor 55 is started to drive the knife holder 56 to rotate around the support column 27. The pelletizing knife 59 on the knife holder 56 cuts the formed material to form nylon composite particles. The pelletizing speed is adjusted in real time according to the extrusion speed of the material to ensure uniform pelletizing, and the length error of the particles is strictly controlled within ±0.5 mm.

[0070] S6, post-processing: the nylon composite particles after pelletizing are collected and placed in a drying device for drying treatment. The drying temperature is controlled at 70°C, and the drying time is 3 hours to remove the water in the particles. After drying, the particles are packaged in a dry and clean environment using sealed packaging materials to prevent the particles from being damp and being contaminated again, ensuring stable product quality.

[0071] Example 4:

[0072] The application also provides a preparation process of a nylon composite material, which is different from that of the embodiment 2, and comprises the following steps:

[0073] S1, raw material preparation: 75 kg of nylon 66 raw material, 18 kg of carbon fiber, 1.5 kg of antioxidant and 5.5 kg of toughening agent are weighed and respectively placed in corresponding storage containers;

[0074] S2, mixing operation: the first driving assembly and the second driving assembly are started, the first driving motor 36 drives the first rotating shaft 30, so that the material feeding group uniformly feeds the raw materials into the mixing tank 6, and at the same time, the second driving motor 40 drives the second rotating shaft 33, and the stirring group stirs the raw materials, the stirring time is set to 25 minutes, and the stirring speed is 700 rpm;

[0075] S3, extrusion operation: the mixed material enters the receiving hopper 11 through the discharge port 7, and then enters the first conveying cylinder 9, the second driving assembly drives the spiral auger 10 to rotate, and the material passes through the conveying section (the temperature is set to 205℃), the compression section (the temperature is set to 225℃), the melting section (the temperature is set to 245℃) and the mixing section (the temperature is set to 265℃) in sequence, and the rotating speed of the spiral auger 10 is controlled to be 400 rpm;

[0076] S4, filtering operation: the extruded material enters the first material conveying channel 18 of the filtering box 16, and the discharging assembly and the material collecting assembly work cooperatively to make the filtering screen continuously move to filter the material, and the filtering screen 17 is replaced every 45 minutes through the third driving motor 50;

[0077] S5, pelletizing operation: the filtered material enters the second material conveying channel 24, and is extruded into a shape through the expanding section 51, the first stable section 52, the reducing section 53 and the second stable section 54, when the material enters the forming channel 26, the fourth driving motor 55 is started to drive the knife holder 56 to rotate, and the pelletizing blade 59 cuts off the material, the pelletizing speed is adjusted according to the extrusion speed of the material, and the length error of the particles is ensured to be within ±0.5 mm;

[0078] S6, post-processing: the particles after pelletizing are collected, dried at 70℃ for 3 hours, and then packaged in a dry and clean environment.

[0079] Embodiment 5:

[0080] The application also provides a preparation process of a nylon composite material, which is different from that of the embodiment 2, and comprises the following steps:

[0081] S1, raw material preparation: 75 kg of nylon 66 raw material, 18 kg of carbon fiber, 1.5 kg of antioxidant and 5.5 kg of toughening agent are weighed and respectively placed in corresponding storage containers;

[0082] S2, mixing operation: start the first drive assembly and the second drive assembly, the blanking assembly uniformly sends the raw material into the mixing tank 6, and the stirring assembly stirs, the stirring time is 18 minutes, and the stirring speed is 550 revolutions / minute;

[0083] S3, extrusion operation: the uniformly mixed material enters the first conveying cylinder 9, passes through the conveying section (210 DEG C), the compression section (230 DEG C), the melting section (250 DEG C) and the mixing section (270 DEG C), and the spiral auger rotates at 350 revolutions / minute;

[0084] S4, filtering operation: the extruded material enters the first material conveying channel 18 of the filtering box 16, and the discharging assembly and the material collecting assembly work cooperatively to make the filtering screen 17 continuously move to filter the material, and the filtering screen 17 is replaced every 35 minutes through the third drive motor 50;

[0085] S5, pelletizing operation: the filtered material enters the second material conveying channel 24, is extruded into a shape through the expansion section 51, the first stable section 52, the reduction section 53 and the second stable section 54, when the material enters the forming channel 26, the fourth drive motor 55 is started to drive the cutter holder 56 to rotate, the pelletizing cutter 59 cuts off the material, the pelletizing speed is adjusted according to the extrusion speed of the material, and the length error of the particles is ensured to be within ±0.5mm;

[0086] S6, post-processing: the particles after pelletizing are collected, dried at 65 DEG C for 2.5 hours, and then packaged in a dry and clean environment.

[0087] The application should be equipped with a PLC controller or an industrial computer, each electrical element is electrically connected with the PLC controller or the industrial computer and is controlled thereby, the specific principle and circuit connection mode are not within the protection scope of the application, and the skilled person in the art can obtain the same through conventional means, which will not be repeated here.

[0088] The application provides a preparation device and a preparation process of a nylon composite material, through multi-stage stirring of a mixing mechanism, segmented temperature control of an extrusion mechanism, continuous screen replacement of a filtering mechanism and flow rate balance design of a pelletizing channel, efficient production of nylon composite material particles with high uniformity and low impurity content is realized, and significant economic benefits are obtained.

[0089] The above are preferred embodiments of the application, and do not limit the protection scope of the application, therefore: equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A device for preparing nylon composite materials, characterized in that: It includes a mixing mechanism (1), an extrusion mechanism (2), a filtering mechanism (3), and a pelletizing mechanism (4) arranged in sequence. The mixing mechanism (1) includes a first support frame (5), a mixing tank (6) is installed at the top inside the first support frame (5), a feeding component is installed on one side of the top of the mixing tank (6), a stirring component is installed inside the mixing tank (6), and a discharge port (7) is provided on the bottom side of the mixing tank (6) away from the feeding component. The first support frame (5) is provided with a first drive component for driving the feeding component to operate and a second drive component for driving the stirring component to operate. The extrusion mechanism (2) includes a second support frame (8) and a first conveying cylinder (9). A spiral auger (10) is rotatably connected inside the first conveying cylinder (9), and the spiral auger (10) is driven to operate by a second drive assembly. A receiving hopper (11) is provided on one side of the first conveying cylinder (9) below the discharge port (7). The first conveying cylinder (9) is provided with a conveying section (12), a compression section (13), a melting section (14), and a mixing section (15) in sequence along the material conveying direction. The filtration mechanism (3) includes a filter box (16) and a filter screen (17). The filter box (16) has a first feeding channel (18) running through its left and right sides. The two ends of the first feeding channel (18) are connected to the extrusion mechanism (2) and the pelletizing mechanism (4) respectively. The filter box (16) has a through groove (19) running through its front and rear sides, passing through the first feeding channel (18). The filter screen (17) is inserted into the through groove (19), and the two ends of the filter screen (17) are respectively provided with a feeding component (20) and a receiving component (21). The pelletizing mechanism (4) includes a second conveying cylinder (22) and an extrusion column (23) fixed inside the second conveying cylinder (22). A second material conveying channel (24) is formed between the extrusion column (23) and the inner wall of the second conveying cylinder (22). A boss (25) is uniformly arranged around the outer wall of the end of the extrusion column (23) away from the filter mechanism (3) along its axis. A forming channel (26) is formed between the boss (25), the outer wall of the extrusion column (23), and the inner wall of the second conveying cylinder (22). A support column (27) is coaxially provided after the end of the extrusion column (23) extends out of the second conveying cylinder (22). A pelletizing assembly is coaxially installed on the support column (27).

2. The equipment for preparing nylon composite materials according to claim 1, characterized in that: The feeding assembly includes a feeding cylinder (28), a feeding hopper (29), a first rotating shaft (30), and a feeding group installed on the side wall of the first rotating shaft (30). The bottom of the feeding cylinder (28) is connected to the top side of the mixing tank (6). The feeding hopper (29) is installed on the top side of the feeding cylinder (28). The first rotating shaft (30) is rotatably connected inside the feeding cylinder (28). The feeding group includes a plurality of feeding blades (31) evenly arranged along the length direction of the first rotating shaft (30), and the plurality of feeding blades (31) are connected by connecting columns (32).

3. The equipment for preparing nylon composite materials according to claim 2, characterized in that: The stirring assembly includes a second rotating shaft (33) and a stirring group installed on the side wall of the second rotating shaft (33). The second rotating shaft (33) is rotatably connected to the mixing tank (6). The stirring group includes a plurality of first stirring rods (34) evenly arranged along the length direction of the second rotating shaft (33), and the plurality of first stirring rods (34) are connected to each other through second stirring rods (35).

4. The equipment for preparing nylon composite materials according to claim 3, characterized in that: The first drive assembly includes a first drive motor (36), a first pulley (37), a second pulley (38), and a transmission belt (39). The output end of the first drive motor (36) is fixedly fitted with the first pulley (37). One end of the first rotating shaft (30) passes through the side wall of the feed cylinder (28) and is fixedly fitted with the second pulley (38). The first pulley (37) and the second pulley (38) are connected by the transmission belt (39). The second drive assembly includes a second drive motor (40), a third pulley (41), a fourth pulley (42), a fifth pulley (43), a sixth pulley (44), a seventh pulley (45), a linkage rod (46), and a transmission belt (39). The output end of the second drive motor (40) is fixedly fitted with a third pulley (41). One end of the spiral auger (10) passes through the first conveying cylinder (9) and is fixedly fitted with a fourth pulley (42). The linkage rod (46) is rotatably connected to the first support frame (5). The fifth pulley (43) and the sixth pulley (44) are respectively fixedly fitted at both ends of the linkage rod (46). One end of the second rotating shaft (33) passes through the side wall of the mixing tank (6) and is fixedly fitted with a seventh pulley (45). The third pulley (41) and the fourth pulley (42), the third pulley (41) and the fifth pulley (43), and the sixth pulley (44) and the seventh pulley (45) are all connected by a transmission belt (39).

5. The equipment for preparing nylon composite materials according to claim 1, characterized in that: Heating components (47) are fitted on the outer walls of the conveying section (12), compression section (13), melting section (14) and mixing section (15), and temperature sensors are installed at the conveying section (12), compression section (13), melting section (14) and mixing section (15).

6. The apparatus for preparing nylon composite materials according to claim 1, characterized in that: Both the feeding assembly (20) and the receiving assembly (21) include a hollow mounting cylinder (48). The side wall of the mounting cylinder (48) has an opening for the filter screen (17) to pass through. A winding roller (49) is rotatably connected inside the mounting cylinder (48). The filter screen (17) is wound around the side wall of the winding roller (49). The receiving assembly (21) also includes a third drive motor (50), which can drive the winding roller (49) of the receiving assembly (21) to rotate.

7. The apparatus for preparing nylon composite materials according to claim 1, characterized in that: The extrusion column (23) is provided with an enlarged section (51), a first stable section (52), a shrinking section (53) and a second stable section (54) in sequence along the flow direction of the material, and the boss (25) is located at the end of the second stable section (54). The inner wall of the second conveying cylinder (22) is adapted to the shape of the extrusion column (23). The end face of the second stable section (54), the end face of the second conveying cylinder (22) and the side of the boss (25) are located on the same horizontal plane.

8. The apparatus for preparing nylon composite materials according to claim 7, characterized in that: The pelletizing assembly includes a fourth drive motor (55), a blade holder (56), and a bearing (57). The fourth drive motor (55) is fixed on the second support frame (8), and the output end of the fourth drive motor (55) is fixedly connected to one side of the blade holder (56). The other side of the blade holder (56) is rotatably connected to the support column (27) through the bearing (57). The side wall of the blade holder (56) is provided with at least one side slot (58), and a pelletizing blade (59) is installed in the slot (58). The cutting edge of the pelletizing blade (59) is close to the end of the forming channel (26).

9. A preparation process for a nylon composite material preparation apparatus according to any one of claims 1-8, characterized in that, Includes the following steps: S1. Raw material preparation: Accurately weigh nylon raw materials, various additives and reinforcing materials according to the preset ratio, and place the weighed raw materials in the corresponding storage containers for later use. S2. Mixing operation: Start the first drive component and the second drive component to start the feeding component and the stirring component to work. Add the raw materials in the storage container to the mixing tank (6) through the feeding component. At the same time, the stirring component stirs and mixes the raw materials entering the mixing tank (6). The stirring time is controlled at 15-30 minutes and the stirring speed is maintained at 500-800 rpm to ensure that the various raw materials are initially mixed evenly. S3, Extrusion Operation: The mixed material falls into the receiving hopper (11) through the discharge port (7) and enters the first conveying cylinder (9). The second drive component drives the spiral auger (10) to rotate, conveying the material through the conveying section (12), compression section (13), melting section (14) and mixing section (15) in sequence. The speed of the spiral auger (10) is controlled at 300-500 rpm, so that the material can complete the conveying, compression, melting and full mixing at different stages. S4. Filtration operation: The material extruded from the extrusion mechanism (2) enters the first conveying channel (18) of the filter box (16). When the material passes through, the filter screen (17) is used to filter the material to remove impurities and unmixed particles. The filter screen (17) is moved once every one time period by the cooperation of the feeding component (20) and the receiving component (21) to ensure the filtration effect. S5. Pelletizing operation: The filtered material enters the second conveying channel (24) between the second conveying cylinder (22) and the extrusion column (23). When the material enters the forming channel (26) through the second conveying channel (24), the pelletizing assembly is activated to cut the formed material and form nylon composite material particles of the required length. The pelletizing speed is adjusted according to the extrusion speed of the material to ensure uniform pelletizing and control the particle length error within ±0.5mm. S6. Post-processing: Collect the nylon composite material particles after pelletizing and perform subsequent drying treatment as needed. The drying temperature is controlled at 60-80℃ and the drying time is 2-4 hours.

10. The preparation process of a nylon composite material according to claim 9, characterized in that: In step S3, the temperature of the conveying section (12) is controlled at 200-220℃, the temperature of the compression section (13) is controlled at 220-240℃, the temperature of the melting section (14) is controlled at 240-260℃, and the temperature of the mixing section (15) is controlled at 260-280℃.

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