Automatic carbon fiber mixing and feeding device

Abstract

The utility model relates to an automatic carbon fiber mixing and feeding device, and relates to the technical field of carbon fiber cloth manufacturing equipment. The automatic carbon fiber mixing and feeding device comprises a rack and a stirring box fixedly arranged on the rack, a first feeding port and a second feeding port are formed in the two ends of the upper side of the stirring box correspondingly, and a discharging port is formed in the middle of the lower side of the stirring box; a spiral roller stirring assembly used for stirring the carbon fibers in the stirring box and pushing the carbon fibers to the direction of the discharging opening is arranged in the stirring box; a spreading disc is arranged below a discharge hole of the stirring box; the automatic carbon fiber mixing and feeding device further comprises a vibration driving part used for driving the material spreading disc to vibrate. According to the automatic mixing and feeding device for the carbon fibers, through the synergistic effect of the spiral roller stirring assembly and the material uniformizing roller assembly, efficient mixing and uniform material spreading of the carbon fibers are achieved, and the production efficiency and the product quality are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of carbon fiber cloth manufacturing equipment, and in particular to an automatic carbon fiber mixing and feeding device. BACKGROUND

[0002] Carbon fiber non-woven cloth (carbon fiber web) is a new type of high-performance composite material, which is formed by short carbon fibers or long carbon fibers through web forming. Carbon fiber non-woven cloth has the characteristics of compact structure, light weight, high strength, corrosion resistance, high temperature resistance, etc., and has been widely used in the fields of aerospace, automobiles, sports goods, construction, etc. The preparation process of carbon fiber non-woven cloth mainly includes web forming, pretreatment, curing and post-treatment processes. Among them, web forming is the key process of carbon fiber non-woven cloth preparation, which determines the performance and quality of the non-woven cloth. In addition, the pretreatment process mainly includes carbon fiber pretreatment and resin matrix material pretreatment, and the curing process is to cure the resin matrix material on the fiber to make it an integrated composite material. The post-treatment process is to reduce the surface roughness of the composite material and improve its gloss and appearance quality.

[0003] With the continuous growth of the market demand for carbon fiber non-woven cloth, its preparation technology and equipment are also constantly improving. In the preparation process of carbon fiber non-woven cloth, how to achieve efficient and uniform feeding before web forming with a carding machine has become an important technical issue. In the traditional preparation process of carbon fiber non-woven cloth, manual feeding is mainly relied on. Although this method can meet the basic needs in the early stage, it is time-consuming, labor-intensive, low in efficiency and high in cost in modern industrial production. In order to cope with this challenge, the industry has begun to use various means to improve the automation level of feeding. For example, simple mechanical feeding devices are introduced to assist manual feeding through vibrating screens or conveyors.

[0004] Because the carbon fiber chopped wire has small mass and is in a filamentous structure, there are different types / models of treatment agents on the surface of the carbon wire, which will cause the carbon wires to stick together when there is a certain humidity. When stored, the carbon fibers are prone to clumping, which causes uneven laying or material jamming. In addition, the web used in different products has mixing requirements, which requires the clumped material to be broken up during mixing while meeting the requirement of uniform mixing. The existing technology uses manual laying or simple mechanical feeding devices, which are difficult to ensure the uniformity of laying, which directly affects the quality and performance of carbon fiber non-woven cloth and limits the further development of carbon fiber non-woven cloth in high-end application fields. CONTENT OF THE INVENTION

[0005] In order to improve the uniformity and consistency of carbon fiber mixing, the present application provides an automatic carbon fiber mixing and feeding device.

[0006] The automatic carbon fiber mixing and feeding device provided by the present application adopts the following technical scheme:

[0007] The application discloses an automatic mixing and feeding device for carbon fibers, which comprises a rack and a stirring box fixed on the rack.

[0008] The stirring box is provided with a spiral roller stirring assembly for stirring the carbon fibers in the stirring box and pushing the carbon fibers to the discharge port.

[0009] The discharge port of the stirring box is provided with a material spreading disc below.

[0010] The automatic mixing and feeding device for carbon fibers further comprises a vibration driving member for driving the material spreading disc to vibrate.

[0011] The automatic mixing and feeding device for carbon fibers is combined with a webbing machine, and the material spreading disc is connected to the feeding curtain of the webbing machine. In the application, the spiral roller stirring assembly is used to uniformly mix different kinds of raw materials without damaging the short-cut fiber form of the carbon fibers. The vibration frequency of the vibration driving member is set to achieve the effect of uniform material spreading. Through the above technical scheme, the automatic mixing and feeding device for carbon fibers realizes mechanical automatic mixing, replaces manual weighing and material spreading, and thus can accurately control the uniformity and consistency of the material spreading, ensures uniform mixing, greatly saves manpower, improves the feeding efficiency, and further improves the webbing quality of the carbon fiber non-woven fabric.

[0012] Optionally, the spiral roller stirring assembly comprises a rotating shaft and a first driving member for driving the rotating shaft to rotate. The rotating shaft is arranged along the length direction of the stirring box. First spiral stirring blades and second spiral stirring blades are arranged on the outer periphery of the rotating shaft. The spiral directions of the first spiral stirring blades and the second spiral stirring blades are the same, and the first spiral stirring blades and the second spiral stirring blades are centrally symmetrically distributed about the central axis of the rotating shaft.

[0013] Through the above technical scheme, the uniform mixing of the carbon fibers in the stirring box is ensured, and the mixing effect is improved. The first spiral stirring blades and the second spiral stirring blades are centrally symmetrically distributed, so that the carbon fibers can be uniformly dispersed more quickly and efficiently during the stirring process, and local accumulation is avoided, thereby further improving the uniformity and efficiency of the material mixing.

[0014] Optionally, a plurality of connecting rods are fixed on the outer periphery of the rotating shaft. The connecting rods are arranged along the radial direction of the rotating shaft. The first spiral stirring blades and the second spiral stirring blades are fixed on the connecting rods, and gaps are formed between the first spiral stirring blades, the second spiral stirring blades and the outer periphery of the rotating shaft.

[0015] By adopting the above technical scheme, the uniformity and efficiency of stirring can be improved, and the carbon fibers can be prevented from being damaged during stirring, so that the original form and mechanical properties of the carbon fibers are better protected.

[0016] Optionally, the rotating shaft, the first spiral stirring piece and the second spiral stirring piece are made of stainless steel, and the outer surfaces of the rotating shaft, the first spiral stirring piece and the second spiral stirring piece are smooth, and the outer edges of the first spiral stirring piece and the second spiral stirring piece are rounded.

[0017] By adopting the above technical scheme, the corrosion resistance and durability of the components are ensured, and the service life of the equipment is prolonged. Meanwhile, the smooth outer surface design reduces the damage to the carbon fibers, prevents the carbon fibers from being scratched or broken during stirring, and thus the original mechanical properties of the carbon fibers are maintained. The rounded edges of the first spiral stirring piece and the second spiral stirring piece effectively prevent the carbon fibers from being cut or entangled due to sharp edges during stirring, and further improve the uniformity and safety of stirring.

[0018] Optionally, a material uniformizing roller assembly is arranged below the discharge port of the stirring box, the material uniformizing roller assembly is arranged above the material laying disc, the material uniformizing roller assembly comprises first rotating rollers and second rotating rollers arranged in parallel and at intervals, the length directions of the first rotating rollers and the second rotating rollers are arranged along the width direction of the material laying disc, a material passing channel is formed between the first rotating rollers and the second rotating rollers, and blades for opening and closing the material passing channel are arranged on the outer circumferential surfaces of the first rotating rollers and the second rotating rollers.

[0019] By adopting the above technical scheme, the arrangement of the material uniformizing roller assembly enables the carbon fibers to be more uniformly distributed on the material laying disc when passing through the material passing channel between the first rotating rollers and the second rotating rollers below the discharge port, so as to ensure the uniformity and consistency of material laying. In addition, the design of the blades can further disperse and homogenize the carbon fibers when passing through the material passing channel, reduce the caking phenomenon, and improve the webbing quality and webbing uniformity. In addition, by controlling the rotating speeds of the first rotating rollers and the second rotating rollers, the feeding amount of the chopped fibers can be accurately controlled, and the stirring of the materials in the stirring box is fully and uniformly ensured.

[0020] Optionally, the lengths of the first rotating rollers and the second rotating rollers are equal to or greater than the width of the material laying disc, and the first rotating rollers and the second rotating rollers are rotatably arranged on the rack, and the rack is further provided with a second driving member for driving the first rotating rollers and the second rotating rollers to rotate in opposite directions synchronously.

[0021] By adopting the above technical scheme, the material blockage is effectively prevented, the feeding speed and efficiency are improved, and the uniform distribution of the materials on the material laying disc is ensured.

[0022] Optionally, a plurality of the blades are uniformly and spacedly arranged on the outer circumferential surface of the first rotating roller and the second rotating roller in the circumferential direction, one side of the blade is fixed to the first rotating roller and the second rotating roller, and the other side of the blade extends outward along the radial direction of the corresponding first rotating roller and second rotating roller, and the length direction of the blade is consistent with the length direction of the first rotating roller and the second rotating roller.

[0023] The blade on the first rotating roller is arranged in one-to-one correspondence with the blade on the second rotating roller.

[0024] By adopting the above technical solution, the uniform dispersion of the carbon fiber raw material at the discharge port can be ensured, thereby improving the uniformity and consistency in the subsequent laying process. The uniform and spaced arrangement of the blades and the corresponding arrangement with the rotating rollers enable the carbon fiber raw material to be effectively separated and uniformly laid out when passing through the material passage, avoiding the problem of uneven laying caused by raw material caking. At the same time, this design also helps to reduce the friction damage between the raw materials and maintain the original physical properties of the carbon fibers.

[0025] Optionally, the blade is made of flexible rubber material.

[0026] By adopting the above technical solution, the blade made of flexible rubber material can effectively separate and uniformly lay out the carbon fiber material while reducing damage to the carbon fiber material, preventing carbon fiber breakage or caking caused by rigid impact, thereby improving the webbing quality and uniformity of the carbon fiber. In addition, it can also avoid the force being transmitted to the first rotating roller and the second rotating roller due to the rigid extrusion of the material on the blade, thereby damaging the bearings and other components of the two.

[0027] Optionally, the front side plate of the stirring box is made of transparent organic panel, and the rear side plate of the stirring box is made of stainless steel plate.

[0028] By adopting the above technical solution, the front side plate of the stirring box is made of transparent organic panel, which facilitates the observation of the carbon fiber mixing state in the stirring box during production operation, and the rear side plate of the stirring box is made of stainless steel plate, which is used to increase the bearing capacity and improve the stability and durability of the equipment.

[0029] Optionally, one end of the laying disc is hinged to the rack, and the other end of the laying disc is provided with a height-adjustable supporting foot at the bottom.

[0030] By adopting the above technical solution, the inclination angle of the laying disc can be adjusted according to actual needs, thereby adapting to different feeding amounts and laying requirements, and improving the flexibility and application range of the equipment.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] 1. The automatic mixing feeding device of carbon fibers in the application realizes mechanical automatic mixing, replaces manual weighing and material laying, saves manpower, and improves feeding efficiency. 2. In the application, the carbon fibers are uniformly stirred and pushed to the discharge port by the spiral roller stirring assembly, which ensures that the material laying plate below the discharge port receives uniform material, avoids the uneven phenomenon of traditional manual feeding, and improves the web forming quality and stability.

[0033] 3. In the application, considering the easy fluffing nature of carbon fibers, spiral roller stirring blades are used, which greatly protect the original form of carbon fibers, ensure the preservation of the mechanical properties of carbon fibers before feeding into the carding machine, and reduce the probability of carbon fiber fluffing and clumping into blocks due to stirring.

[0034] 4. In the application, by setting the material uniformizing roller assembly, the carbon fibers can be more uniformly distributed on the material laying plate when passing through the material passage between the first rotating roller and the second rotating roller below the discharge port, thereby ensuring the uniformity and consistency of material laying and further improving the web forming quality and uniformity. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a schematic diagram of the three-dimensional structure of the device in the application.

[0036] Figure 2 is a schematic diagram of the partial three-dimensional structure of the device in the application.

[0037] Figure 3 is a schematic diagram of the partial front view structure of the device in the application.

[0038] Figure 4 is a schematic diagram of the left view structure of the device in the application.

[0039] In the figure:

[0040] 10, rack;

[0041] 20, stirring box; 21, first feeding port; 22, second feeding port; 23, discharge port; 24, feeding hopper;

[0042] 30, spiral roller stirring assembly; 31, shaft; 32, first spiral stirring blade; 33, second spiral stirring blade; 34, connecting rod;

[0043] 40, material laying plate;

[0044] 50, vibration driving part;

[0045] 60, supporting leg;

[0046] 70, material uniformizing roller assembly; 71, first rotating roller; 72, second rotating roller; 73, blade; 74, material passage. DETAILED DESCRIPTION

[0047] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present application and, together with the description, further serve to explain the principles of the application and to enable a person skilled in the relevant art(s) to make and use the application. Figure 1 - The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present application and, together with the description, further serve to explain the principles of the application and to enable a person skilled in the relevant art(s) to make and use the application. Figure 4 The technical solutions in the embodiments of the present application are clearly and completely described, and the described embodiments are only possible technical implementations of the present application, not all possible implementations. A person skilled in the art can certainly combine the embodiments of the present application to obtain other embodiments without creative labor, and these embodiments are also within the protection scope of the present application.

[0048] Referring to Figure 1 and Figure 2 , the automatic carbon fiber mixing and feeding device in the present application comprises a rack 10 and a stirring box 20. The rack 10 is in a long strip shape, and the stirring box 20 is horizontally and fixedly arranged on the rack 10. The front side plate of the stirring box 20 is made of a transparent organic panel, which is convenient for observing the mixing state of carbon filaments in the stirring box 20 during production operation. The rear side plate of the stirring box 20 is made of a stainless steel plate, which is used to increase the bearing capacity, improve the stability and durability of the equipment. First and second feeding ports 21 and 22 are respectively arranged at the upper two ends of the stirring box 20, and feeding hoppers 24 are arranged at the first and second feeding ports 21 and 22. A discharging port 23 is arranged at the middle of the lower side of the stirring box 20. A material spreading disc 40 is arranged below the discharging port 23 of the stirring box 20. The material spreading disc 40 is a flat plate, one end of the material spreading disc 40 is hingedly connected to the rack 10, and the other end of the material spreading disc 40 is provided with height-adjustable supporting feet 60. The inclination angle of the material spreading disc 40 can be adjusted according to actual needs, so as to adapt to different feeding amounts and material spreading requirements, and improve the flexibility and application range of the equipment. The bottom of the material spreading disc 40 is provided with a vibration driving member 50 for driving the material spreading disc 40 to vibrate. The vibration driving member 50 can be a vibration motor. The vibration motor drives the material spreading disc 40 to vibrate, which is used to uniformly disperse the materials on the material spreading disc 40 and make the materials on the material spreading disc 40 feed forward.

[0049] Referring to Figure 2 , Figure 3 and Figure 4As shown, the stirring box 20 is provided with a spiral roller stirring assembly 30 for stirring the carbon fibers in the stirring box 20 and pushing the carbon fibers to the discharge port 23. The spiral roller stirring assembly 30 comprises a rotating shaft 31 and a first driving member for driving the rotating shaft 31 to rotate. The rotating shaft 31 is arranged along the length direction of the stirring box 20, and both ends of the rotating shaft 31 are rotatably connected to both ends of the stirring box 20 through bearings and bearing seats. The first driving member can be a driving motor. The driving motor is fixedly arranged outside the stirring box 20, and the output shaft of the driving motor is connected to one end of the rotating shaft 31 through a speed reducer, so as to drive the rotating shaft 31 to rotate. The outer periphery of the rotating shaft 31 is respectively provided with a first spiral stirring blade 32 and a second spiral stirring blade 33. The spiral directions of the first spiral stirring blade 32 and the second spiral stirring blade 33 are the same, and the first spiral stirring blade 32 and the second spiral stirring blade 33 are centrally symmetrically distributed with the central axis of the rotating shaft 31 as the axis of symmetry. Specifically, a plurality of connecting rods 34 are fixedly arranged on the outer periphery of the rotating shaft 31. The connecting rods 34 are arranged along the radial direction of the rotating shaft 31. The first spiral stirring blade 32 and the second spiral stirring blade 33 are fixedly connected to the connecting rods 34, and the first spiral stirring blade 32 and the second spiral stirring blade 33 both have gaps with the outer periphery of the rotating shaft 31.

[0050] In the present application, the rotating shaft 31, the first spiral stirring blade 32 and the second spiral stirring blade 33 are all made of stainless steel, which ensures the corrosion resistance and durability of the components and prolongs the service life of the equipment. The outer surfaces of the rotating shaft 31, the first spiral stirring blade 32 and the second spiral stirring blade 33 are smooth, and the outer sides of the first spiral stirring blade 32 and the second spiral stirring blade 33 are both rounded. These designs reduce the damage to the carbon fibers and prevent the carbon fibers from being scratched or broken during stirring, thereby maintaining the original mechanical properties of the carbon fibers.

[0051] Referring to Figure 2 , Figure 3 and Figure 4As shown, the uniform material roller assembly 70 is arranged below the discharge port 23 of the stirring box 20; the uniform material roller assembly 70 is arranged above the material laying disc 40; the uniform material roller assembly 70 comprises first rotating rollers 71 and second rotating rollers 72 arranged in parallel and at intervals; the length direction of the first rotating rollers 71 and the second rotating rollers 72 is arranged along the width direction of the material laying disc 40, and a material passing channel 74 is formed between the first rotating rollers 71 and the second rotating rollers 72; a plurality of blades 73 are uniformly and at intervals arranged on the outer circumferential surface of the first rotating rollers 71 and the second rotating rollers 72 in the circumferential direction; the blades 73 are made of flexible rubber material; one side of the blade 73 is fixedly connected to the first rotating roller 71 and the second rotating roller 72; the other side of the blade 73 extends outward along the radial direction of the corresponding first rotating roller 71 and second rotating roller 72; the length direction of the blade 73 is consistent with the length direction of the first rotating roller 71 and the second rotating roller 72; the blades 73 on the first rotating roller 71 and the blades 73 on the second rotating roller 72 are arranged one by one in correspondence; when the blades 73 on the first rotating roller 71 and the blades 73 on the second rotating roller 72 move to the material passing channel 74, the two blades 73 abut to close the material passing channel 74.

[0052] Further, the length of the first rotating roller 71 and the second rotating roller 72 is equal to or greater than the width of the material laying disc 40; the first rotating roller 71 and the second rotating roller 72 are rotatably arranged on the rack 10; the rack 10 is further provided with a second driving member for driving the first rotating roller 71 and the second rotating roller 72 to rotate in opposite directions synchronously; the second driving member can be a servo motor; the first rotating roller 71 and the second rotating roller 72 are provided with gears that mesh with each other; the output shaft of the servo motor is connected to one end of the first rotating roller 71 or the second rotating roller 72 through a speed reducer, so as to drive the first rotating roller 71 and the second rotating roller 72 to rotate in opposite directions synchronously.

[0053] The implementation principle is as follows: the carbon fiber automatic mixing and feeding device provided by the application is used in combination with a net tire machine; the material laying disc 40 is connected to the feeding curtain of the net tire machine; after adjusting the rack 10 to be at a proper height and adjusting the suitable inclination angle of the material laying disc 40, the machine can be started to feed; after starting the spiral roller stirring assembly 30, one or more raw materials are poured into the first feeding port 21 and the second feeding port 22 above the stirring box 20; if there is only one raw material, the uniform material roller assembly 70 and the vibration driving member 50 can be started to lay material without waiting after the raw material is poured into the stirring box 20; if two or more raw materials are poured, in order to ensure uniform mixing, the opposite uniform material roller assembly 70 and the vibration driving member 50 can be started only after the raw materials are uniformly mixed; in the technical solution, a pull-type blocking door can be arranged at the discharge port 23 of the stirring box 20 to prevent material leakage and ensure that the material is fully mixed before the blocking door is opened.

[0054] The rotation speed of the rotation shaft 31, the rotation speed of the first rotation roller 71 and the second rotation roller 72, the vibration frequency of the vibration driving member 50 and the adjustable inclination angle of the material spreading disc 40 are flexibly set in the application to meet the process requirements of different feeding amounts in the production process.

[0055] The spiral roller stirring assembly 30 is adopted in the application to uniformly mix different kinds of raw materials without damaging the short carbon fiber filament form, the rotation speed of the material mixing roller assembly 70 and the vibration frequency of the vibration driving member 50 are set to achieve the effect of uniform material spreading. The carbon fiber automatic mixing and feeding device in the application realizes mechanical automatic mixing, replaces manual weighing and material spreading, thereby accurately controlling the uniformity and consistency of the material spreading and ensuring uniform mixing; at the same time, it greatly saves manpower, improves the feeding efficiency and further improves the webbing quality of the carbon fiber non-woven fabric.

[0056] The first spiral stirring blade 32 and the second spiral stirring blade 33 are adopted for spiral stirring in the application in consideration of the easy fluffing nature of carbon fiber, which greatly protects the original form of carbon fiber, ensures the preservation of the mechanical properties of carbon fiber before feeding into the carding machine and reduces the probability of carbon fiber fluffing, clumping and blocking due to stirring.

[0057] The embodiments of the specific embodiments are the preferred embodiments of the application, but do not limit the protection scope of the application, wherein the same parts are indicated by the same reference numerals. Therefore: all equivalent changes made according to the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. An automatic carbon fiber mixing and feeding device, characterized in that, It includes a frame (10) and a mixing tank (20) fixed on the frame (10). The mixing tank (20) has a first feed inlet (21) and a second feed inlet (22) at the upper two ends respectively, and a discharge outlet (23) at the lower middle part of the mixing tank (20). The mixing tank (20) is equipped with a spiral roller mixing assembly (30) for mixing the carbon fibers in the mixing tank (20) and pushing the carbon fibers toward the discharge port (23); A spreading tray (40) is provided below the discharge port (23) of the mixing tank (20); The automatic carbon fiber mixing and feeding device also includes a vibration drive (50) for driving the vibration of the spreading disc (40).

2. The automatic carbon fiber mixing and feeding device according to claim 1, characterized in that, The spiral roller stirring assembly (30) includes a rotating shaft (31) and a first driving member for driving the rotating shaft (31) to rotate. The rotating shaft (31) is arranged along the length direction of the stirring box (20). A first spiral stirring blade (32) and a second spiral stirring blade (33) are respectively arranged on the outer periphery of the rotating shaft (31). The spiral directions of the first spiral stirring blade (32) and the second spiral stirring blade (33) are the same, and the first spiral stirring blade (32) and the second spiral stirring blade (33) are centrally symmetrically distributed with the central axis of the rotating shaft (31) as the axis of symmetry.

3. The automatic carbon fiber mixing and feeding device according to claim 2, characterized in that, A plurality of connecting rods (34) are fixed on the outer circumferential surface of the rotating shaft (31). The connecting rods (34) are arranged along the radial direction of the rotating shaft (31). The first spiral stirring blade (32) and the second spiral stirring blade (33) are fixedly connected to the connecting rods (34), and there is a gap between the first spiral stirring blade (32) and the second spiral stirring blade (33) and the outer circumferential surface of the rotating shaft (31).

4. The automatic carbon fiber mixing and feeding device according to claim 2 or 3, characterized in that, The rotating shaft (31), the first spiral stirring blade (32), and the second spiral stirring blade (33) are all made of stainless steel. The outer surfaces of the rotating shaft (31), the first spiral stirring blade (32), and the second spiral stirring blade (33) are smooth, and the outer edges of the first spiral stirring blade (32) and the second spiral stirring blade (33) are rounded.

5. The automatic carbon fiber mixing and feeding device according to claim 1, 2, or 3, characterized in that, A material leveling roller assembly (70) is provided below the discharge port (23) of the mixing tank (20); the material leveling roller assembly (70) is provided above the spreading tray (40); the material leveling roller assembly (70) includes a first rotating roller (71) and a second rotating roller (72) arranged in parallel and spaced apart; the length direction of the first rotating roller (71) and the second rotating roller (72) is arranged along the width direction of the spreading tray (40), and a material passage (74) is formed between the first rotating roller (71) and the second rotating roller (72), and blades (73) for opening and closing the material passage (74) are provided on the outer peripheral surface of the first rotating roller (71) and the second rotating roller (72).

6. The automatic carbon fiber mixing and feeding device according to claim 5, characterized in that, The lengths of the first rotating roller (71) and the second rotating roller (72) are equal to or greater than the width of the spreading disc (40); the first rotating roller (71) and the second rotating roller (72) are both rotatably mounted on the frame (10), and the frame (10) is also provided with a second driving member for driving the first rotating roller (71) and the second rotating roller (72) to rotate synchronously in opposite directions.

7. The automatic carbon fiber mixing and feeding device according to claim 6, characterized in that, A plurality of blades (73) are evenly spaced along the circumferential direction on the outer peripheral surfaces of the first rotating roller (71) and the second rotating roller (72). One side of each blade (73) is fixed to the first rotating roller (71) and the second rotating roller (72), and the other side of each blade (73) extends outward along the radial direction of the corresponding first rotating roller (71) and the second rotating roller (72). The length direction of each blade (73) is consistent with the length direction of the first rotating roller (71) and the second rotating roller (72). The blades (73) on the first rotating roller (71) are arranged in a one-to-one correspondence with the blades (73) on the second rotating roller (72).

8. The automatic carbon fiber mixing and feeding device according to claim 6, characterized in that, The blade (73) is made of flexible rubber.

9. The automatic carbon fiber mixing and feeding device according to claim 1, 2, or 3, characterized in that, The front panel of the mixing tank (20) is made of transparent organic panel, and the rear panel of the mixing tank (20) is made of stainless steel plate.

10. The automatic carbon fiber mixing and feeding device according to claim 1, 2, or 3, characterized in that, One end of the spreading tray (40) is hinged to the frame (10), and the other end of the spreading tray (40) is provided with a height-adjustable support foot (60).

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