A device and process for spreading yarns and impregnating materials for forming carbon fiber prepreg

Abstract

The present invention discloses a yarn spreading and resin impregnating device and process for forming carbon fiber prepreg in the technical field of carbon fiber processing, including a bottom plate. Above the bottom plate, there is a support one and two support twos. Between the two support twos, two driving rollers are rotatably connected, and the two driving rollers are used for driving the carbon fiber prepreg; above the two driving rollers, there is a storage tank; on the support one, there is a yarn spreading mechanism, and the yarn spreading mechanism is used for flattening multiple groups of carbon fiber bundles into a cloth shape; on the storage tank, there is a driving mechanism, and the driving mechanism is used for driving the resin impregnating mechanism to operate; by evenly and equally applying resin through the resin impregnating mechanism, the present invention can effectively solve the problem that when the resin is applied to the carbon fiber prepreg in a dripping manner in the traditional way, the resin application is not uniform enough, the resin distribution on the carbon fiber prepreg is uneven, and further affect the quality of the carbon fiber prepreg after forming.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon fiber processing, and specifically to a yarn spreading and impregnating device and process for forming carbon fiber prepreg cloth. Background Art

[0002] Prepreg is an intermediate material for manufacturing composite materials and their components, constituting the basic unit of composite materials. The uniformity and stability of its quality are important links to ensure the quality and reliability of composite materials and their components.

[0003] After the carbon fiber prepreg cloth is spread with yarn, epoxy resin needs to be applied; in the existing carbon fiber prepreg cloth when applying resin, a relatively common method is to adopt the natural dripping method. This method is to set a container for storing resin above the moving carbon fiber prepreg cloth, and then open a discharge port below the container. When the carbon fiber prepreg cloth is moving, the discharge port is opened, and the resin in the container will naturally drip onto the carbon fiber prepreg cloth, thus achieving the effect of applying the resin to the carbon fiber prepreg cloth; however, there are some drawbacks when using this method. Since the resin is a fluid with a large surface tension and poor overall fluidity, when the resin drips, the amount of resin dripping will decrease as the resin in the container decreases, and the fluidity of the resin is also related to its temperature. When the temperature of the resin decreases, the fluidity will also become poor, so the resin applied to the carbon fiber prepreg cloth will not be distributed evenly enough, and there will be differences in the amount of resin distributed at different positions on the carbon fiber prepreg cloth. Summary of the Invention

[0004] The purpose of the present invention is to provide a yarn spreading and impregnating device and process for forming carbon fiber prepreg cloth to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A yarn spreading and impregnating device and process for forming carbon fiber prepreg cloth, including a bottom plate. Above the bottom plate, there is a support one and two support twos. Between the two support twos, two driving rollers are rotatably connected, and the two driving rollers are used to drive the carbon fiber prepreg cloth; Above the two driving rollers, there is a storage tank;

[0006] On the support one, there is a yarn spreading mechanism, and the yarn spreading mechanism is used to flatten multiple groups of carbon fiber bundles into a cloth shape;

[0007] On the storage tank, there is an impregnating mechanism, and the impregnating mechanism is used to evenly apply a fixed amount of resin in the storage tank onto the carbon fiber prepreg cloth;

[0008] On the storage tank, there is a driving mechanism, and the driving mechanism is used to drive the impregnating mechanism to operate.

[0009] Preferably, the yarn spreading mechanism includes two limiting rods, which are symmetrically distributed on the left and right sides of the first bracket and are both fixedly connected to the bottom plate; the first bracket is slidably connected to the two limiting rods; a cylinder is provided at the bottom of the first bracket, one end of the cylinder is fixedly connected to the bottom plate and the other end is fixedly connected to the first bracket; yarn spreading rollers are provided on the upper and lower sides inside the first bracket, and the two yarn spreading rollers are respectively in contact with the upper and lower surfaces of the carbon fiber prepreg; an electric heating wire is provided inside the yarn spreading roller.

[0010] Preferably, the impregnating mechanism includes two impregnating cylinders, which are symmetrically distributed below the front and rear sides of the storage tank and are both fixedly connected to the storage tank; the impregnating cylinder is connected to the storage tank and an opening is provided at the bottom of the impregnating cylinder; a coating cylinder is provided inside the impregnating cylinder, the coating cylinder is hermetically fitted with the inner wall of the impregnating cylinder and is rotatably connected to the impregnating cylinder; a plurality of material suction grooves are evenly formed on the surface of the coating cylinder, and the plurality of material suction grooves are arranged in a circumferential array on the surface of the coating cylinder; the distance between adjacent two material suction grooves is equal to the width of the material suction groove; the coating cylinders on the front and rear sides are staggeredly distributed; a material suction mechanism is provided inside the coating cylinder for sucking the resin in the storage tank into the material suction groove; a material discharging mechanism is provided inside the coating cylinder for pushing the resin out of the material suction groove when the material suction groove rotates to the opening position of the impregnating cylinder following the coating cylinder.

[0011] Preferably, the material suction mechanism includes a plurality of first sealing plates, and the plurality of first sealing plates are respectively located in the plurality of material suction grooves; two second sealing plates are provided at the outer upper end of the first sealing plate, the second sealing plate is slidably connected to the first sealing plate and is slidably connected to the inner wall of the material suction groove; first push rods are symmetrically and fixedly connected to the left and right sides inside the first sealing plate, the first push rods penetrate through the coating cylinder and are slidably connected to the coating cylinder; a second push rod is provided on the first push rod; arc-shaped frames are symmetrically provided at the left and right sides inside the impregnating cylinder, and fixing frames are fixedly connected to the outer sides of the arc-shaped frames on the impregnating cylinder, and the left and right fixing frames are respectively fixedly connected to the left and right arc-shaped frames.

[0012] Preferably, the part of the arc-shaped frame from the bottom side to the position close to the storage tank is circular, the part of the arc-shaped frame excluding the circular part is linear, and the linear part of the arc-shaped frame is tangent to the circular part of the arc-shaped frame; the distance between the second push rod and the axis of the coating cylinder is greater than the radius of the circular part of the arc-shaped frame; an air extraction cylinder is fixedly connected above the impregnating cylinder, and the air extraction cylinder is connected to the inner cavity of the impregnating cylinder.

[0013] Preferably, the material return mechanism includes a plurality of connecting plates, the number of the connecting plates is equal to the number of the suction grooves and the plurality of connecting plates are distributed in a circular array inside the paint barrel; sliding rods are symmetrically provided on the left and right sides of the connecting plate, the sliding rods are fixedly connected to the inner wall of the paint barrel and a spring is sleeved on the sliding rod, one end of the spring is fixedly connected to the sliding rod and the other end is fixedly connected to the connecting plate; the sliding rod is slidably connected to the connecting plate, and the connecting plate is fixedly connected to the first push rods located on its left and right sides.

[0014] Preferably, a two-way threaded rod is provided in the paint barrel, and the left and right ends of the two-way threaded rod respectively pass through the fixing frames on the left and right sides and are rotatably connected to the fixing frames; the two-way threaded rod has self-locking properties and the left and right side parts of the two-way threaded rod are respectively sleeved with driving frames, the driving frame is threadedly connected to the two-way threaded rod and the driving frame is slidably connected to the inner wall of the paint barrel; the driving frame is provided with a first slider at a side close to the inner wall of the paint barrel, the first slider is clearance-matched with the driving frame and the first slider is slidably connected to the connecting plate; the first slider is rotatably connected to a connecting rod, and the other end of the connecting rod is rotatably connected to a second slider, the second slider is slidably connected to the first push rod and the second slider is fixedly connected to the second push rod; the left and right ends of the two-way threaded rod are fixedly connected to a rotating ring.

[0015] Preferably, the driving mechanism includes two fixed plates, which are respectively fixedly connected to the left and right side parts of the storage box and are respectively fixedly connected to the two brackets 2; the left and right sides of the storage box are symmetrically connected with pulleys 1 for rotation; the left and right sides of the paint cylinder are symmetrically fixedly connected with pulleys 2, and the pulleys 2 are annular in shape; a motor is fixedly connected to the fixed plate on the right side, and the motor output shaft is fixedly connected to the right pulley 1; a belt is provided on the pulley 1, and the belt is engaged with the pulley 1 and the two pulleys 2 at the same time.

[0016] Preferably, a drive shaft is provided in the storage box, the drive shaft is fixedly connected to the pulleys on the left and right sides, and a plurality of stirrers are fixedly connected to the drive shaft, and an electric heating wire is provided in the stirrer.

[0017] A process for spreading yarn and impregnating carbon fiber prepreg fabrics, the specific steps of the process are as follows:

[0018] Step 1: Pass multiple groups of carbon fiber tows into the yarn spreading mechanism, and then start the yarn spreading mechanism to flatten the multiple groups of carbon fiber tows into cloth shape;

[0019] Step 2: When the carbon fiber prepreg is transmitted to the impregnation mechanism position, the driving mechanism is started to drive the impregnation mechanism to operate;

[0020] Step 3: The impregnation mechanism applies the resin in the storage box evenly and quantitatively to the surface of the carbon fiber prepreg.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] In the present invention, two rollers rotate. The material suction grooves on the rollers first suck materials from the storage box, and then apply the sucked materials onto the carbon fiber prepreg. By sucking and discharging materials through the material suction grooves, the effects of quantitatively and stably applying resin can be achieved; at least two rollers alternately cooperate to apply coatings on the carbon fiber prepreg, and the resins applied on the carbon fiber prepreg by the two rollers are fused with each other, so that a continuous resin coating can be formed on the carbon fiber prepreg, effectively solving the problems that when the resin is applied to the carbon fiber prepreg in a dripping manner in the prior art, the resin coating is not uniform enough and the resin distribution on the carbon fiber prepreg is uneven.

[0023] In the present invention, by increasing the distance between the second push rod and the first sealing plate, when the coating cylinder rotates, the distance that the arc-shaped frame pushes the second push rod decreases, which will cause the distance that the first sealing plate moves in the material suction groove to decrease, and the amount of resin sucked by the first sealing plate and the two second sealing plates will be reduced, achieving the effect of adjusting the amount of resin applied to the carbon fiber prepreg. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a schematic diagram of the rear view structure of the present invention;

[0026] Figure 3 is a schematic diagram of the disassembled structure of the present invention;

[0027] Figure 4 is a schematic diagram of the structure of the material dipping mechanism in the present invention;

[0028] Figure 5 is a schematic diagram of the disassembled structure of the material dipping mechanism in the present invention;

[0029] Figure 6 is a schematic diagram of the disassembled structure of the dipping cylinder in the present invention;

[0030] Figure 7 is a schematic diagram of the sectional structure of the coating cylinder in the present invention;

[0031] Figure 8 is Figure 7 an enlarged schematic diagram of A in

[0032] Figure 9 is a schematic diagram of the sectional structure of the coating cylinder from a second perspective in the present invention;

[0033] Figure 10 is Figure 9 an enlarged schematic diagram of B in

[0034] Figure 11It is a schematic structural diagram of the driving mechanism in the present invention;

[0035] Figure 12 It is a schematic structural diagram of the yarn spreading mechanism in the present invention;

[0036] Figure 13 It is a working principle diagram of the coating cylinder in the present invention;

[0037] Figure 14 It is a schematic diagram of the principle of applying resin to the carbon fiber prepreg in the present invention.

[0038] In the attached drawings: 1. bottom plate; 2. support one; 3. support two; 4. driving roller; 5. storage tank; 6. limiting rod; 7. cylinder; 8. yarn spreading roller; 9. dipping cylinder; 10. coating cylinder; 11. suction groove; 12. sealing plate one; 13. sealing plate two; 14. first push rod; 15. second push rod; 16. arc-shaped frame; 17. fixed frame; 18. air extraction cylinder; 19. connecting plate; 20. sliding rod; 21. spring; 22. bidirectional threaded rod; 23. driving frame; 24. first slider; 25. connecting rod; 26. second slider; 27. rotating ring; 28. fixing plate; 29. pulley one; 30. pulley two; 31. motor; 32. belt; 33. driving shaft; 34. stirrer; 35. air extraction port; 36. suction port; 37. prepreg; 38. dot-shaped resin; 39. continuous resin. Detailed implementation manners

[0039] Please refer to Figures 1-14 , the present invention provides a technical solution: a yarn spreading and dipping device and process for forming carbon fiber prepreg, including a bottom plate 1, on which a yarn spreading mechanism for flattening multiple groups of carbon fiber bundles into a cloth shape is provided through a support one 2, and at least two driving rollers 4 for driving the carbon fiber prepreg are arranged on the bottom plate through a support two 3, and a storage tank 5 for storing resin is arranged above the driving roller 4;

[0040] A dipping mechanism is arranged on the storage tank 5, and the dipping mechanism is used for quantitatively and evenly applying the resin in the storage tank 5 onto the carbon fiber prepreg;

[0041] As Figures 6-10 、 Figures 13-14As shown in the figure, the impregnating mechanism includes two impregnating cylinders 9. The two impregnating cylinders 9 are symmetrically distributed below the front and rear sides of the storage tank 5 and are fixedly connected to the storage tank 5. The impregnating cylinder 9 is connected to the storage tank 5 and there is an opening at the bottom of the impregnating cylinder 9. There is a coating cylinder 10 inside the impregnating cylinder 9. The coating cylinder 10 is hermetically fitted to the inner wall of the impregnating cylinder 9 and is rotatably connected to the impregnating cylinder 9. A plurality of material suction grooves 11 are evenly formed on the surface of the coating cylinder 10. The plurality of material suction grooves 11 are circumferentially arranged on the surface of the coating cylinder 10. The distance between two adjacent material suction grooves 11 is equal to the width of the material suction groove 11. The coating cylinders 10 on the front and rear sides are staggeredly distributed. Since the material suction grooves 11 on the coating cylinder 10 are spaced apart, when the material suction grooves 11 on one coating cylinder 10 apply resin to the carbon fiber prepreg, the resin on the carbon fiber prepreg is also spaced apart and the width of the resin distributed on the carbon fiber prepreg is equal to the distance between two adjacent resins. By the staggered distribution of the coating cylinder 10 on the rear side and the coating cylinder 10 on the front side, the material suction grooves 11 on the coating cylinder 10 on the rear side exactly correspond to the vacant parts between two resins on the carbon fiber prepreg. When the coating cylinder 10 on the rear side rotates, the vacant parts on the carbon fiber prepreg can be coated with resin through the plurality of material suction grooves 11 on its surface, achieving the effect of continuously and evenly applying resin to the carbon fiber prepreg. There is a material suction mechanism inside the coating cylinder 10. The material suction mechanism is used to suck the resin in the storage tank 5 into the material suction grooves 11. There is a material discharging mechanism inside the coating cylinder 10. The material discharging mechanism is used to push the resin out of the material suction grooves 11 when the material suction grooves 11 rotate with the coating cylinder 10 to the opening position of the impregnating cylinder 9.

[0042] There is a driving mechanism on the storage tank 5. The driving mechanism is used to drive the coating cylinder 10 to operate.

[0043] During operation, multiple groups of carbon fiber filaments are passed through the yarn spreading mechanism, and then the yarn spreading mechanism is started to flatten the multiple groups of carbon fiber filaments into a cloth shape. The carbon fiber prepreg in the form of a cloth continues to be transmitted backward. When the carbon fiber prepreg is transmitted to the position of the two transmission rollers 4, the driving mechanism is started at this time. The driving mechanism drives the coating cylinder 10 to rotate, and the impregnating mechanism will evenly and equally apply the resin in the storage tank 5 to the carbon fiber prepreg.

[0044] Specifically: Refer to Figure 14, the two driving rollers 4 rotate clockwise, and drive the prepreg 37 from left to right. At the same time, the two coating cylinders 10 rotate counterclockwise at the same speed as the driving rollers 4; after the resin suction grooves 11 on the left coating cylinder 10 are filled with resin, they rotate to the lower side in sequence and when they are closest to the prepreg 37, the resin is discharged onto the prepreg 37 to form a section of dot-coated resin 38. As the prepreg 37 continues to be driven, multiple dot-coated resins 38 are formed on the prepreg at intervals. The interval between two adjacent dot-coated resins 38 is equal to the width of one dot-coated resin 38; when the prepreg 37 is driven to the position of the right coating cylinder 10, when the right coating cylinder 10 rotates, new dot-coated resins 38 are applied at the positions between two dot-coated resins 38 on the prepreg 37 through the multiple resin suction grooves 11 on its surface. The newly applied dot-coated resin 38 and the two dot-coated resins 38 on the prepreg fuse with each other to form a section of continuous resin 39; as the prepreg 37 continues to be driven, the length of the continuous resin 39 on the prepreg 37 will continue to increase; by evenly applying resin in equal amounts through the dipping mechanism, it can effectively solve the problem that when resin is applied to carbon fiber prepreg in a dripping manner in the traditional way, the resin application is not uniform enough, the resin distribution on the carbon fiber prepreg is uneven, and further affect the quality of the carbon fiber prepreg after molding; it should be noted that if the number of coating cylinders 10 is increased, the width of the dot-coated resin 38 can be reduced; in short, the number of coating cylinders 10 or the width of the resin suction grooves 11 should be aimed at forming continuous resin 39.

[0045] As Figures 6-10 , Figures 13-14 shown, as a further solution of the present invention, the resin suction mechanism includes a first sealing plate 12 slidably disposed in the resin suction groove 11, and a plurality of first sealing plates 12 are respectively located in a plurality of resin suction grooves 11; at the outer end of the first sealing plate 12 on the outer side, two second sealing plates 13 are provided. The second sealing plates 13 are slidably connected to the first sealing plate 12 and the inner wall of the resin suction groove 11; symmetrically fixed to the left and right sides of the inner side of the first sealing plate 12 are first push rods 14. The first push rods 14 penetrate through the coating cylinder 10 and the first push rods 14 are slidably connected to the coating cylinder 10; a second push rod 15 is provided on the first push rod 14; symmetrically disposed at the left and right sides inside the dipping cylinder 9 are arc-shaped frames 16. Fixedly connected to the outside of the arc-shaped frames 16 on the dipping cylinder 9 are fixed frames 17, and the left and right fixed frames 17 are respectively fixedly connected to the left and right arc-shaped frames 16;

[0046] The part of the arc-shaped frame 16 from the bottom side to the position close to the storage tank 5 is circular, and the part of the arc-shaped frame 16 excluding the circular part is linear. The linear part of the arc-shaped frame 16 is tangent to the circular part of the arc-shaped frame sixteen; the distance between the second push rod 15 and the axis of the coating cylinder 10 is greater than the radius of the circular part of the arc-shaped frame 16; fixedly connected above the dipping cylinder 9 is an air extraction cylinder 18, and the air extraction cylinder 18 is connected to the inner cavity of the dipping cylinder 9;

[0047] During operation, when the carbon fiber prepreg is conveyed to the bottom position of the first coating cylinder 10, the first coating cylinder 10 is started to rotate. When the coating cylinder 10 rotates, a plurality of material suction grooves 11 on its surface rotate along with the coating cylinder 10. When the material suction groove 11 rotates to the position where the prepreg cylinder is connected to the storage tank 5, the second push rod 15 abuts against the arc-shaped frame 16 at this time. As the coating cylinder 10 continues to rotate, the second push rod 15 starts to move in the direction close to the axis of the coating cylinder 10 under the extrusion of the arc-shaped frame 16. The second push rod 15 drives the first push rod 14 to move, and the first push rod 14 drives the sealing plate one 12 in the material suction groove 11 to move. The sealing plate one 12 drives the two sealing plates two 13 connected thereto to move. Under the action of the sealing plate one 12 and the two sealing plates two 13, the resin in the storage tank 5 is sucked into the corresponding material suction groove 11.

[0048] As the coating cylinder 10 continues to rotate, when the coating cylinder 10 drives the material suction groove 11 filled with resin to rotate to the directly above position, the material suction groove 11 is connected to the air extraction cylinder 18 at this time. By starting the air extraction cylinder 18, the air bubbles contained in the resin in the material suction groove 11 can be pumped away.

[0049] As Figures 7-9 shown, as a further solution of the present invention, the material discharging mechanism includes a plurality of connecting plates 19. The number of the connecting plates 19 is equal to the number of the material suction grooves 11, and the plurality of connecting plates 19 are circumferentially and arrayedly distributed inside the coating cylinder 10. Slide rods 20 are symmetrically arranged at the left and right positions on the connecting plate 19. The slide rods 20 are fixedly connected to the inner wall of the coating cylinder 10, and springs 21 are sleeved on the slide rods 20. One end of the spring 21 is fixedly connected to the slide rod 20, and the other end is fixedly connected to the connecting plate 19. The slide rods 20 are slidably connected to the connecting plates 19, and the connecting plates 19 are fixedly connected to the first push rods 14 on their left and right sides.

[0050] During operation, when the coating cylinder 10 rotates to move the resin-suction groove 11 filled with resin to the lowest position, the resin-suction groove 11 is exactly at the position closest to the carbon fiber prepreg at this time. The second push rod 15 corresponding to the resin-suction groove 11 just disengages from the arc-shaped frame 16 at this time. After losing the limit of the arc-shaped frame 16, under the action of the spring 21, the connecting plate 19 at this position automatically moves downward. The connecting plate 19 drives the two first push rods 14 to move downward, and the two first push rods 14 drive the sealing plate one 12 at the lowest position and the two sealing plates two 13 to move downward to the bottommost position. The sealing plate one 12 and the two sealing plates two 13 will completely push out the resin in the lowest resin-suction groove 11, and the resin will fall onto the carbon fiber prepreg. Due to the continuous transmission of the carbon fiber prepreg and the spaced distribution of the resin-suction grooves 11 on the coating cylinder 10, the front coating cylinder 10 will apply the resin to the carbon fiber prepreg at intervals. When the carbon fiber prepreg is transmitted to the position below the rear coating cylinder 10, the rear coating cylinder 10 will apply resin to the vacant part of the carbon fiber prepreg.

[0051] As Figures 6-8 shown, as a further solution of the present invention, a bidirectional threaded rod 22 is provided inside the coating cylinder 10. The left and right ends of the bidirectional threaded rod 22 respectively penetrate through the left and right fixed frames 17 and are rotatably connected to the fixed frames 17. The bidirectional threaded rod 22 has self-locking property, and driving frames 23 are respectively sleeved on the left and right sides of the bidirectional threaded rod 22. The driving frames 23 are threadedly connected to the bidirectional threaded rod 22 and are slidably connected to the inner wall of the coating cylinder 10. A first slider 24 is provided at a position on the driving frame 23 close to the inner wall of the coating cylinder 10. The first slider 24 has a clearance fit with the driving frame 23 and is slidably connected to the connecting plate 19. A connecting rod 25 is rotatably connected to the first slider 24, and the other end of the connecting rod 25 is rotatably connected to a second slider 26. The second slider 26 is slidably connected to the first push rod 14 and is fixedly connected to the second push rod 15. Rotating rings 27 are fixedly connected to both the left and right ends of the bidirectional threaded rod 22.

[0052] During operation, when the rotating ring 27 is rotated, the rotating ring 27 will drive the double-headed threaded rod 22 to rotate. When the double-headed threaded rod 22 rotates, it will drive the driving frames 23 on the left and right sides inside the paint cylinder 10 to move left and right respectively. When the driving frame 23 (taking the left driving frame 23 as an example) moves, it will drive all the first sliders 24 corresponding to it to slide leftward. When the first slider 24 moves, it will drive the second slider 26 to slide on the first push rod 14 towards the center of the paint cylinder 10 through the connecting rod 25. The second slider 26 drives the second push rod 15 to move, and the distance between the second push rod 15 and the first sealing plate 12 increases; when the paint cylinder 10 rotates, the distance that the arc-shaped frame 16 pushes the second push rod 15 decreases, which will cause the distance that the first sealing plate 12 moves in the resin suction groove 11 to decrease, and the amount of resin sucked by the first sealing plate 12 and the two second sealing plates 13 will decrease, which can achieve the effect of adjusting the amount of resin coated on the carbon fiber prepreg.

[0053] As Figures 5-6 、 Figure 11 shown, as a further solution of the present invention, the driving mechanism includes two fixing plates 28. The two fixing plates 28 are respectively fixedly connected to the left and right side parts of the storage tank 5 and are respectively fixedly connected to the two second brackets 3; on the left and right sides of the storage tank 5, a first pulley 29 is rotatably connected symmetrically; on the left and right sides of the paint cylinder 10, a second pulley 30 is fixedly connected symmetrically, and the second pulley 30 is in a ring shape; on the right fixing plate 28, a motor 31 is fixedly connected, and the output shaft of the motor 31 is fixedly connected to the right first pulley 29; a belt 32 is provided on the first pulley 29, and the belt 32 meshes with the first pulley 29 and the two second pulleys 30 at the same time;

[0054] Inside the storage tank 5, a driving shaft 33 is provided. The driving shaft 33 is fixedly connected to the first pulleys 29 on the left and right sides and a plurality of stirrers 34 are fixedly connected to the driving shaft 33. Electric heating wires are provided inside the stirrers 34;

[0055] During operation, by starting the motor 31, the left first pulley 29 can be driven to rotate. The left first pulley 29 drives the driving shaft 33 to rotate. The driving shaft 33 drives the right first pulley 29 to rotate synchronously. The first pulleys 29 on the left and right sides drive the two second pulleys 30 on the left and right sides to rotate through the belt 32 at the same time. When the second pulley 30 rotates, it will drive the paint cylinder 10 to rotate; when the driving shaft 33 rotates, it will drive the plurality of stirrers 34 connected to it to rotate. Starting the electric heating wires inside the stirrers 34 can achieve the effect of heating the resin inside the storage tank 5, and cooperating with the stirring of the stirrers 34 can effectively prevent the resin from solidifying.

[0056] As Figure 1 、 Figure 12As shown, as a further solution of the present invention, the yarn spreading mechanism includes two limit rods 6, which are symmetrically distributed on the left and right sides of the bracket 2 and are fixedly connected to the bottom plate 1; the bracket 2 is slidably connected to the two limit rods 6; a cylinder 7 is provided at the bottom of the bracket 2, one end of the cylinder 7 is fixedly connected to the bottom plate 1 and the other end is fixedly connected to the bracket 2; yarn spreading rollers 8 are provided at the upper and lower sides of the bracket 2, and the two yarn spreading rollers 8 are respectively in contact with the upper and lower surfaces of the carbon fiber prepreg; an electric heating wire is provided inside the yarn spreading roller 8;

[0057] During operation, when multiple groups of carbon fiber tows pass through the two yarn spreading rollers, the cylinder 7 is started to drive the bracket 2 to vibrate up and down, and the bracket 2 drives the two yarn spreading rollers to vibrate up and down, so that the carbon fiber tows can be spread out; by starting the electric heating wire inside the yarn spreading roller, the carbon fiber prepreg can be preheated.

[0058] As a further embodiment of the present invention, a process for spreading and impregnating carbon fiber prepreg is provided, wherein the specific steps of the process are as follows:

[0059] Step 1: Pass multiple groups of carbon fiber tows into the yarn spreading mechanism, and then start the yarn spreading mechanism to flatten the multiple groups of carbon fiber tows into cloth shape;

[0060] Step 2: When the carbon fiber prepreg is transmitted to the impregnation mechanism position, the driving mechanism is started to drive the impregnation mechanism to operate;

[0061] Step 3: The impregnation mechanism applies the resin in the storage box evenly and quantitatively to the surface of the carbon fiber prepreg.

Claims

1. A yarn spreading and impregnation device for forming carbon fiber prepreg, comprising a base plate (1) and a yarn spreading mechanism, wherein the yarn spreading mechanism is used to flatten a plurality of carbon fiber bundles into a cloth shape; characterized in that: A bracket 1 (2) and two bracket 2s (3) are provided above the bottom plate (1); two transmission rollers (4) are rotatably connected between the two bracket 2s (3); the two transmission rollers (4) are used to transmit carbon fiber prepreg; a storage box (5) is provided above the two transmission rollers (4); The storage box (5) is provided with a dipping mechanism, and the dipping mechanism includes at least two dipping cylinders (9) fixedly connected to the storage box (5), the dipping cylinders (9) are connected to the storage box (5), and an opening is provided at the bottom of the dipping cylinder (9); a paint cylinder (10) is provided in the dipping cylinder (9) and is sealed with the inner wall of the dipping cylinder (9), and a plurality of suction grooves (11) are evenly opened on the surface of the paint cylinder (10); a suction mechanism is provided in the paint cylinder (10), and the suction mechanism is used to suck the resin in the storage box (5) into the suction groove (11); a material return mechanism is provided in the paint cylinder (10), and the material return mechanism is used to push the resin out of the suction groove (11) when the suction groove (11) rotates to the opening position of the dipping cylinder (9) following the paint cylinder (10); The storage box (5) is provided with a driving mechanism, and the driving mechanism is used to drive the paint barrel (10) to rotate; The material suction mechanism includes a plurality of sealing plates (12), and the plurality of sealing plates (12) are respectively located in a plurality of material suction grooves (11); two sealing plates (13) are provided on one end of the outer side of the sealing plate (12), and the sealing plate (13) is slidably connected to the sealing plate (12) and the sealing plate (13) is slidably connected to the inner wall of the material suction groove (11); the first push rod (14) is symmetrically fixedly connected to the left and right sides of the inner side of the sealing plate (12), the first push rod (14) passes through the paint barrel (10) and is slidably connected to the paint barrel (10); a second push rod (15) is provided on the first push rod (14); arc frames (16) are symmetrically provided on the left and right sides of the immersion barrel (9), and a fixed frame (17) is fixedly connected to the outer side of the arc frame (16) on the immersion barrel (9), and the fixed frames (17) on the left and right sides are respectively fixedly connected to the arc frames (16) on the left and right sides; The portion of the arc frame (16) from the bottom side to the position close to the storage box (5) is in a circular shape, and the arc frame (16) is in a straight line shape except for the circular shape portion, and the straight line portion of the arc frame (16) is tangent to the circular shape portion of the arc frame (16); the distance between the second push rod (15) and the axis of the paint barrel (10) is greater than the radius of the circular shape portion of the arc frame (16); an exhaust cylinder (18) is fixedly connected to the upper position of the immersion barrel (9), and the exhaust cylinder (18) is connected to the inner cavity of the immersion barrel (9).

2. The device for spreading and impregnating carbon fiber prepreg according to claim 1, characterized in that: The material return mechanism comprises a plurality of connecting plates (19), the number of the connecting plates (19) being equal to the number of the material suction grooves (11), and the plurality of connecting plates (19) being distributed in a circular array inside the paint barrel (10); sliding rods (20) being symmetrically provided on the left and right sides of the connecting plate (19), the sliding rods (20) being fixedly connected to the inner wall of the paint barrel (10), and a spring (21) being sleeved on the sliding rod (20), one end of the spring (21) being fixedly connected to the sliding rod (20) and the other end being fixedly connected to the connecting plate (19); the sliding rod (20) being slidably connected to the connecting plate (19), and the connecting plate (19) being fixedly connected to the first push rods (14) located on the left and right sides thereof.

3. The device for spreading and impregnating carbon fiber prepreg according to claim 2, characterized in that: A bidirectional threaded rod (22) is provided in the paint barrel (10), and the left and right ends of the bidirectional threaded rod (22) respectively pass through the fixed frames (17) on the left and right sides and are rotatably connected to the fixed frames (17); the bidirectional threaded rod (22) has a self-locking property, and the left and right side portions of the bidirectional threaded rod (22) are respectively sleeved with a driving frame (23), the driving frame (23) is threadedly connected to the bidirectional threaded rod (22), and the driving frame (23) is slidably connected to the inner wall of the paint barrel (10); the driving frame (23) is close to the inner wall of the paint barrel (10) A first slider (24) is provided at the side position, the first slider (24) is clearance-matched with the driving frame (23) and the first slider (24) is slidably connected to the connecting plate (19); a connecting rod (25) is rotatably connected to the first slider (24), and the other end of the connecting rod (25) is rotatably connected to the second slider (26), the second slider (26) is slidably connected to the first push rod (14), and the second slider (26) is fixedly connected to the second push rod (15); and a rotating ring (27) is fixedly connected to both the left and right ends of the bidirectional threaded rod (22).

4. The device for spreading and impregnating carbon fiber prepreg according to claim 1, characterized in that: The driving mechanism comprises two fixed plates (28), the two fixed plates (28) are respectively fixedly connected to the left and right side parts of the storage box (5) and the two fixed plates (28) are respectively fixedly connected to the two brackets (3); the left and right sides of the storage box (5) are symmetrically connected to the pulley one (29); the left and right sides of the paint cylinder (10) are symmetrically fixedly connected to the pulley two (30), and the pulley two (30) is annular; a motor (31) is fixedly connected to the right fixed plate (28), and the output shaft of the motor (31) is fixedly connected to the right pulley one (29); a belt (32) is provided on the pulley one (29), and the belt (32) is simultaneously engaged with the pulley one (29) and the two pulleys two (30).

5. The device for spreading and impregnating carbon fiber prepreg according to claim 4, characterized in that: A drive shaft (33) is provided in the storage box (5), the drive shaft (33) is fixedly connected to the pulleys (29) on the left and right sides, and a plurality of stirrers (34) are fixedly connected to the drive shaft (33), and an electric heating wire is provided in the stirrer (34).

6. The carbon fiber prepreg forming device according to claim 1, characterized in that: The plurality of material suction grooves (11) are distributed in a circular array on the surface of the paint barrel (10); the distance between two adjacent material suction grooves (11) is equal to the width of the material suction groove (11); and the paint barrels (10) on the front and rear sides are staggered.

7. The device for spreading and impregnating carbon fiber prepreg according to claim 1, characterized in that: The yarn spreading mechanism comprises two limiting rods (6), the two limiting rods (6) are symmetrically distributed at the left and right sides of the bracket one (2), and the two limiting rods (6) are fixedly connected to the bottom plate (1); the bracket one (2) is slidably connected to the two limiting rods (6); a cylinder (7) is provided at the bottom of the bracket one (2), one end of the cylinder (7) is fixedly connected to the bottom plate (1) and the other end is fixedly connected to the bracket one (2); yarn spreading rollers (8) are provided at the upper and lower sides of the bracket one (2), and the two yarn spreading rollers (8) are respectively fitted with the upper and lower surfaces of the carbon fiber prepreg; and an electric heating wire is provided inside the yarn spreading roller (8).

8. A process for forming a carbon fiber prepreg by spreading yarn and impregnation, applicable to the apparatus for forming a carbon fiber prepreg by spreading yarn and impregnation according to any one of claims 1 to 7, characterized in that: The specific steps of this process are as follows: Step 1: Pass multiple groups of carbon fiber tows into the yarn spreading mechanism, and then start the yarn spreading mechanism to flatten the multiple groups of carbon fiber tows into cloth shape; Step 2: When the carbon fiber prepreg is transmitted to the impregnation mechanism position, the driving mechanism is started to drive the impregnation mechanism to operate; Step 3: The impregnation mechanism applies the resin in the storage box evenly and quantitatively to the surface of the carbon fiber prepreg.

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