A device and method for making a carbon fiber shaped spreader sheet

Abstract

The application relates to a device for making a carbon fiber shaping and spreading piece, which comprises a spreading mechanism, a first pulling mechanism, a powder scattering mechanism, a heating mechanism, a second pulling mechanism and a winding mechanism arranged in sequence. The first pulling mechanism provides initial tension for the carbon fiber in the spreading mechanism by cooperating with a yarn unwinding frame. The second driving assembly arranged in the spreading mechanism further adjusts the tension of the carbon fiber to meet the spreading tension. The second tension detection unit detects the tension of the carbon fiber in the heating mechanism and feeds back to the control center. The second pulling mechanism matches the pulling speed of the first pulling mechanism to ensure the micro-tension requirement of the powder scattering and heating shaping section. The first vibration roller and the second vibration roller are driven to vibrate up and down by the symmetrically arranged second eccentric wheels, the length change of the spreading piece in the heating mechanism is weakened, the influence on the tension is reduced, the resin particle uniformity is improved, the resin permeability is enhanced, the micro-tension state is maintained, and the spreading piece dispersion and cracking phenomenon in the powder scattering and heating process are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of carbon fiber composite material preforming equipment, in particular to a making device and method of carbon fiber shaped unwinding piece. BACKGROUND

[0002] Carbon fiber warp-knitted fabric is one of the main materials for wind turbine blade manufacturing, which strengthens the wind turbine blade. The quality of the warp-knitted fabric is directly related to the strength, modulus and fatigue resistance level of the wind turbine blade. The areal density of the carbon fiber warp-knitted fabric as the main reinforcing material of the wind turbine blade is usually greater than 600 g / m2. The greater the areal density of the warp-knitted fabric, the more carbon fiber yarns are required for production. The early-stage processing of carbon fiber into carbon fiber shaped unwinding piece can greatly facilitate the later-stage production.

[0003] In the production process of carbon fiber warping and unwinding, resin is required to be scattered on the carbon fiber unwinding piece, and then heated to combine the resin with the carbon fiber unwinding piece, so as to shape the carbon fiber unwinding piece. The production device requires an unwinding area, a powder scattering and heating shaping area, and a disc head winding area, and different tensions of carbon fiber are required in different areas. The unwinding area adopts a hot rolling and unwinding process, which requires a large unwinding constant tension. In the powder scattering and heating shaping area, a micro-tension is required to improve the permeability of the resin and prevent the unwinding piece from cracking when the micro-tension is dispersed. A certain tension is required when winding the disc head to ensure the tightness of the disc head. The currently used unwinding production equipment generally has poor unwinding effect on large tow carbon fibers, and the resin permeability is not good. SUMMARY

[0004] The present application provides a making device and method of carbon fiber shaped unwinding piece, which can effectively solve the problems in the background art.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0006] A making device of carbon fiber shaped unwinding piece, comprising a base frame and, sequentially arranged thereon along a first direction, an unwinding mechanism, a first pulling mechanism, a powder scattering mechanism, a heating mechanism, a second pulling mechanism and a winding mechanism, the first direction being arranged along the fiber conveying direction;

[0007] The unwinding mechanism comprises a yarn collecting assembly, a first superposition unit and a vibration assembly arranged along the first direction. The yarn collecting assembly comprises a plurality of yarn collecting rollers arranged along the vertical direction. The vibration assembly comprises unwinding rollers and adjusting rollers alternately arranged along the first direction. A plurality of the unwinding rollers are driven to move back and forth along a second direction by a first driving assembly. A plurality of the adjusting rollers are driven to move along the vertical direction by a second driving assembly. The second direction and the first direction are vertically arranged in the horizontal plane.

[0008] The first pulling mechanism comprises a first driving roller and a first driven roller, the first driving roller is driven to rotate by a fifth power device, and the first driven roller is driven to press towards the first driving roller by a swing arm assembly;

[0009] The powder scattering mechanism comprises a hopper, a needle roller and a vibrating brush, the needle roller is arranged at a discharge port at the bottom of the hopper and is driven to rotate by a sixth power device, and the vibrating brush is arranged corresponding to the needle roller and is driven to reciprocate along the axial direction of the needle roller by a third driving assembly;

[0010] First and second vibrating rollers are arranged at the two ends of the heating mechanism respectively, the first and second vibrating rollers are driven to move along the vertical direction by a fourth driving assembly, the heating mechanism comprises first and second heating film groups arranged on the upper and lower sides of the fiber respectively, and the first and second heating film groups are driven to move towards or away from the fiber by first and second air cylinders respectively;

[0011] A second tension detection unit is arranged on the side of the second pulling mechanism close to the heating mechanism, the second pulling mechanism comprises a second driving roller and a second driven roller, the second driving roller is driven to rotate by a seventh power device, and the second driven roller is driven to press towards the second driving roller by a third air cylinder;

[0012] The winding mechanism comprises a winding shaft, an air expansion shaft and a tension adjusting assembly, the winding shaft and the air expansion shaft are driven to rotate by an eighth power device and a ninth power device respectively.

[0013] Further, the first driving assembly comprises a first power device, a transmission shaft and a first eccentric wheel, the transmission shaft is arranged in a first direction and is driven to rotate by the first power device, and the first eccentric wheel is sleeved on the transmission shaft and rotates coaxially with the transmission shaft;

[0014] Both ends of the fiber spreading roller are arranged on linear bearing seats, the first eccentric wheel is provided with a plurality of first eccentric wheels corresponding to the fiber spreading roller and connected to one end of the fiber spreading roller through a first connecting piece, and both ends of the first connecting piece are rotatably connected to the first eccentric wheel and the one end of the fiber spreading roller.

[0015] Further, the second driving assembly comprises a second power device, a worm assembly, a mounting vertical plate and a first guide rail arranged in the vertical direction, and the mounting vertical plate is slidably connected to the first guide rail;

[0016] The end of the adjusting roller is arranged on the mounting vertical plate, and the worm assembly is driven to move the mounting vertical plate along the vertical direction by the second power device.

[0017] Further, the vibration assembly comprises a layered spreading section arranged along a first direction, a second superposition unit, and a superposition spreading section, the layered spreading section is close to the yarn collecting assembly, and a first tension detection unit is arranged close to the second superposition unit;

[0018] The first driving assembly and the second driving assembly are arranged on the layered spreading section and the superposition spreading section respectively, and are connected with the spreading roller and the adjusting roller arranged in the spreading sections respectively.

[0019] Further, the first vibration roller and the second vibration roller are arranged on two support beams respectively, the support beams are slidingly connected with the vertically arranged second guide rails, and a connecting seat is arranged at the bottom of the support beam;

[0020] The fourth driving assembly comprises a driving shaft and a second eccentric wheel coaxially rotating with the driving shaft, the driving shaft is arranged along a first direction and is driven to rotate by a fourth power device, the second eccentric wheels are arranged in pairs corresponding to the support beams, and are connected with the connecting seat through a second connecting piece, and the two ends of the second connecting piece are rotationally connected with the second driving wheel and the connecting seat respectively.

[0021] Further, the two second eccentric wheels are arranged in a 180° angle symmetry centering on the rotation axis of the driving shaft.

[0022] Further, the first heating film group and the second heating film group respectively adopt a heating pipe and an aluminum heating plate to heat the fiber.

[0023] The heating pipe is arranged in multiple along a first direction, and the aluminum heating plate is arranged in multiple corresponding to the fiber area.

[0024] Further, the second pulling mechanism further comprises a cold water pipeline, and the cooling cavities in the second power roller and the second driven roller are communicated with the cold water pipeline through a rotary joint.

[0025] The second tension detection unit comprises a yarn guide roller and a tension sensor arranged thereon, and the roller surface of the yarn guide roller is higher than the pressing surface of the second power roller and the second driven roller.

[0026] A method for making a carbon fiber shaping and spreading piece, which adopts the making device of the carbon fiber shaping and spreading piece, and comprises the following steps:

[0027] The carbon fiber tows led out from the creel are introduced into the yarn collecting assembly, and sequentially pass through the first superposition unit, the layered spreading section, the second superposition unit, the superposition spreading section, the first pulling mechanism, the powder scattering mechanism, the first vibration roller, the heating mechanism, the second vibration roller, and the second pulling mechanism, and are finally wound on the winding mechanism.

[0028] The first tension detection unit arranged close to the second superposition unit detects the carbon fiber tension in the fiber spreading mechanism, and the second tension detection unit arranged close to the second pulling mechanism detects the carbon fiber tension in the heating mechanism;

[0029] The first pulling mechanism provides a constant conveying speed for the carbon fiber in the fiber spreading mechanism, and the yarn frame adjusts the carbon fiber tension in the fiber spreading mechanism to make the detection value of the first tension detection unit meet the set interval;

[0030] The second tension detection unit detects and feeds back the carbon fiber tension at the heating mechanism, and the second pulling mechanism matches the pulling speed of the first pulling mechanism to automatically adjust the pulling speed of the carbon fiber at the heating mechanism;

[0031] The fourth drive drives the first vibration roller and the second vibration roller on the two sides of the heating mechanism to vibrate up and down, the eighth power device drives the winding shaft to wind the fiber spreading sheet, and the ninth power device drives the air expansion shaft to unwind the release paper sleeved thereon and wind it together with the fiber spreading sheet.

[0032] Further, by respectively controlling the power of the plurality of heating pipes in the first heating film group in the heating mechanism, a high-temperature zone and a heat preservation zone are formed inside the heating mechanism;

[0033] The high-temperature zone and the heat preservation zone are located at the feeding end and the discharging end of the heating mechanism respectively, wherein the heating zone occupies 1 / 3 of the area of the heating mechanism, and the heat preservation zone occupies 2 / 3 of the area of the heating mechanism.

[0034] The beneficial effects of the present application are:

[0035] In the present application, the fiber spreading tension is set according to process requirements, the first pulling mechanism pulls the carbon fiber yarn at a constant speed, the unwinding yarn frame provides an initial tension for the carbon fiber in the fiber spreading mechanism, the second drive assembly arranged in the fiber spreading mechanism further adjusts the carbon fiber tension to meet the fiber spreading tension requirement. The second tension detection unit detects the tension of the carbon fiber in the heating mechanism and feeds back to the control center, and the second pulling mechanism matches the pulling speed of the first pulling mechanism to ensure the micro-tension requirement of the carbon fiber in the heating mechanism;

[0036] The second eccentric wheels arranged symmetrically drive the first vibration roller and the second vibration roller to vibrate up and down respectively, and drive the fiber spreading sheet to vibrate, which can weaken the length change of the fiber spreading sheet in the heating mechanism, reduce the influence on the carbon fiber tension, improve the uniformity of the resin particles, enhance the resin permeability, maintain the micro-tension state, and avoid the fiber spreading sheet from being dispersed and cracked during the powdering and heating process;

[0037] The heating mechanism adopts simultaneous heating from top to bottom, the second heating film group can uniformly heat the carbon fiber, the heating tube of the first heating film group is convenient for controlling the heating power, 1 / 3 area of the inlet section of the heating mechanism is a high temperature area, which can quickly melt the resin particles; the remaining 2 / 3 area is a heat preservation area, so that the melted resin has sufficient time to penetrate into the yarn, and the resin permeability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0039] Figure 1 The structure schematic diagram of the carbon fiber shaping and spreading piece making device in the embodiment of the present application;

[0040] Figure 2 The explosion schematic diagram of the carbon fiber shaping and spreading piece making device in the embodiment of the present application;

[0041] Figure 3 The structure schematic diagram of the spreading mechanism in the embodiment of the present application;

[0042] Figure 4 The structure schematic diagram of the first driving assembly and the second driving assembly in the embodiment of the present application;

[0043] Figure 5 The structure schematic diagram of the first pulling mechanism in the embodiment of the present application;

[0044] Figure 6 The structure schematic diagram of the heating mechanism in the embodiment of the present application;

[0045] Figure 7 The structure schematic diagram of the first heating film group and the second heating film group in the embodiment of the present application;

[0046] Figure 8 The structure schematic diagram of the first vibrating roller and the second vibrating roller in the embodiment of the present application;

[0047] Figure 9 The structure schematic diagram of Figure 8 The local structure schematic diagram of A in the embodiment of the present application;

[0048] Figure 10 The structure schematic diagram of the powder scattering mechanism in the embodiment of the present application;

[0049] Figure 11 The structure schematic diagram of the second pulling mechanism in the embodiment of the present application;

[0050] Figure 12 This is a schematic diagram of the winding mechanism in an embodiment of the present invention;

[0051] Figure 13 This is a schematic diagram of the production process of carbon fiber shaping and spreading sheets in an embodiment of the present invention.

[0052] Reference numerals: 1. Fiber spreading mechanism; 11. Yarn collecting assembly; 111. Yarn collecting roller; 12. First stacking unit; 13. Vibration assembly; 131. Layered fiber spreading section; 132. Second stacking unit; 133. First tension detection unit; 134. Stacked fiber spreading section; 135. Fiber spreading roller; 136. Adjusting roller; 14. First drive assembly; 141. First power unit; 142. Transmission shaft; 143. First eccentric wheel; 144. Linear bearing seat; 145. First connecting piece; 15. Second drive assembly; 151. Second power unit; 152. Worm gear assembly; 153. Mounting vertical plate; 154. First guide rail; 2. First pulling mechanism; 21. First power roller; 22. First driven roller; 23. Fifth power unit; 24. Swing arm assembly; 3. Powder spreading mechanism; 31. Hopper; 32. Needle roller; 33. Vibrating brush; 34. 1. Sixth power unit; 35. Third drive assembly; 4. Heating mechanism; 41. First heating film group; 411. Heating tube; 42. Second heating film group; 421. Aluminum heating plate; 43. First cylinder; 44. Second cylinder; 45. Support beam; 451. Connecting seat; 46. First vibrating roller; 47. Second vibrating roller; 48. Fourth drive assembly; 481. Drive shaft; 482. Second eccentric wheel; 483. Fourth power unit; 484. Second connecting piece; 5. Second traction mechanism; 51. Second tension detection unit; 511. Yarn guide roller; 512. Tension sensor; 52. Second power roller; 53. Second driven roller; 54. Seventh power unit; 55. Third cylinder; 6. Winding mechanism; 61. Winding shaft; 62. Air expansion shaft; 63. Tension adjustment assembly; 64. Eighth power unit; 65. Ninth power unit. Detailed Implementation

[0053] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0054] It should be understood that when an element as a layer, region or plate is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In addition, it should be understood that when an element is referred to as being "connected" to or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0056] As shown in Figures 1 to 13 A device for making a carbon fiber shaping and spreading sheet includes a base frame and a spreading mechanism 1, a first pulling mechanism 2, a powdering mechanism 3, a heating mechanism 4, a second pulling mechanism 5 and a winding mechanism 6 arranged in sequence on the base frame along a first direction, the first direction being arranged along a fiber conveying direction;

[0057] The spreading mechanism 1 includes a yarn collecting assembly 11 arranged along the first direction, a first superposition unit 12 and a vibrating assembly 13, the yarn collecting assembly 11 includes a plurality of yarn collecting rollers 111 arranged along a vertical direction, the vibrating assembly 13 includes a plurality of spreading rollers 135 and a plurality of adjusting rollers 136 arranged alternately along the first direction, the plurality of spreading rollers 135 are driven to reciprocate along a second direction by a first driving assembly 14, the plurality of adjusting rollers 136 are driven to move along the vertical direction by a second driving assembly 15, the second direction is arranged perpendicularly to the first direction in a horizontal plane;

[0058] The first pulling mechanism 2 includes a first driving roller 21 and a first driven roller 22, the first driving roller 21 is driven to rotate by a fifth power device 23, the first driven roller 22 is driven to press tightly towards the first driving roller 21 by a swing arm assembly 24;

[0059] The powdering mechanism 3 includes a hopper 31, a needle roller 32 and a vibrating brush 33, the needle roller 32 is arranged at a discharge port of the hopper 31 and is driven to rotate by a sixth power device 34, the vibrating brush 33 is arranged correspondingly to the needle roller 32 and is driven to reciprocate along an axial direction of the needle roller 32 by a third driving assembly 35;

[0060] The first vibration roller 46 and the second vibration roller 47 are respectively arranged at the inlet and outlet of the heating mechanism 4, and are driven to move in the vertical direction by the fourth driving assembly 48. The heating mechanism 4 comprises the first heating film group 41 and the second heating film group 42 arranged on the upper and lower sides of the fiber respectively, and is driven to move towards or away from the fiber by the first air cylinder 43 and the second air cylinder 44 respectively.

[0061] The second tension detection unit 51 is arranged on the side of the second pulling mechanism 5 close to the heating mechanism 4. The second pulling mechanism 5 comprises the second driving roller 52 and the second driven roller 53. The second driving roller 52 is driven to rotate by the seventh power device 54. The second driven roller 53 is driven to press against the second driving roller 52 by the third air cylinder 55.

[0062] The winding mechanism 6 comprises the winding shaft 61, the air expansion shaft 62 and the tension adjusting assembly 63. The winding shaft 61 and the air expansion shaft 62 are driven to rotate by the eighth power device 64 and the ninth power device 65 respectively.

[0063] In the embodiment, the yarn guide frame exports several carbon fiber tows which are laid side by side along the width direction of the yarn and form a fiber spreading plane by the setting yarn assembly 11 in the spreading mechanism. The fiber spreading effect is enhanced and the yarn density is more uniform after the fiber spreading plane is vibrated by the vibration assembly 13, thereby improving the stability of the product after the fiber spreading plane is formed.

[0064] The first pulling mechanism 2 provides conveying power for the carbon fiber in the fiber spreading mechanism 1, and cooperates with the yarn guide frame to provide initial tension to the carbon fiber in the yarn guide frame. In the vibration assembly 13 of the fiber spreading mechanism 1, the adjusting roller 136 arranged between the multiple fiber spreading rollers 135 is driven to move in the vertical direction by the second driving assembly 15, thereby adjusting the conveying stroke of the carbon fiber in the fiber spreading mechanism 1 and further adjusting the tension of the carbon fiber yarn. The fiber spreading roller 135 arranged between the multiple adjusting rollers 136 is driven to move in the width direction of the yarn by the first driving assembly 14, thereby enhancing the fiber spreading effect and making the carbon fiber more closely arranged together, thereby improving the tensile strength of the fiber spreading plane.

[0065] The resin particles are uniformly scattered to the fiber spreading plane by the powder scattering mechanism 3, and are conveyed to the heating mechanism 4 under the driving of the second pulling mechanism 5, so that the resin particles are melted and permeated into the carbon fiber yarn, and the carbon fiber is shaped to form a fiber spreading plane. The fiber spreading plane is vibrated up and down by the first vibration roller 46 and the second vibration roller 47 arranged at the inlet and outlet of the heating mechanism 4, thereby improving the uniformity of the resin particles on the yarn and enhancing the permeability of the resin.

[0066] In the present application, the carbon fiber yarn is pulled by the first pulling mechanism 2 at a constant speed according to the process requirements, the tension of the carbon fiber in the heating mechanism 4 is detected by the second tension detection unit 51 and fed back to the control center, and the pulling speed of the first pulling mechanism 2 is matched by the second pulling mechanism 5, so that the carbon fiber in the heating mechanism 4 can meet the micro-tension requirement of the powder spraying and heating setting section.

[0067] In the present application, the first pulling mechanism 2 cooperates with the yarn unwinding frame to provide initial tension for the carbon fiber in the fiber spreading mechanism 1, and the second driving assembly 15 arranged in the fiber spreading mechanism 1 further adjusts the tension of the carbon fiber.

[0068] As shown in Figure 4 Fig. 1 is a structural schematic view of the fiber spreading roller 135 and the adjusting roller 136 in the fiber spreading mechanism 1 in the connected state of the first driving assembly 14 and the second driving assembly 15, wherein the first driving assembly 14 includes a first power device 141, a transmission shaft 142, and a first eccentric wheel 143, the transmission shaft 142 is arranged in a first direction and driven to rotate by the first power device 141, and the first eccentric wheel 143 is sleeved on the transmission shaft 142 and rotates coaxially with the transmission shaft 142;

[0069] The two ends of the fiber spreading roller 135 are arranged on the linear bearing seat 144, the first eccentric wheel 143 corresponding to the fiber spreading roller 135 is arranged in multiple, and one end of the fiber spreading roller 135 is connected to the first eccentric wheel 143 through the first connecting piece 145, and the two ends of the first connecting piece 145 are respectively rotatably connected to the first eccentric wheel 143 and one end of the fiber spreading roller 135.

[0070] The first eccentric wheel 143 on the transmission shaft 142 converts the rotary motion of the transmission shaft 142 into the linear motion of the first connecting piece 145 in the second direction, and the two ends of the connecting piece are respectively rotatably connected to the first eccentric wheel 143 and one end of the fiber spreading roller 135, which can compensate for the vertical travel difference of the first eccentric wheel 143 during rotation.

[0071] Further, the second driving assembly 15 includes a second power device 151, a worm assembly 152, a mounting vertical plate 153, and a first guide rail 154 arranged in a vertical direction, the mounting vertical plate 153 is slidably connected with the first guide rail 154; the end of the adjusting roller 136 is arranged on the mounting vertical plate 153, and the worm assembly 152 is driven by the second power device 151 to move the mounting vertical plate 153 in the vertical direction.

[0072] As a preferred embodiment of the above embodiment, in the vibration assembly 13 of the spreading mechanism 1, the carbon fibers are first subjected to layered spreading and then subjected to superimposed spreading of the multi-layered spreaded carbon fibers; specifically, the vibration assembly 13 comprises a layered spreading section 131 arranged along the first direction, a second superimposed unit 132, and a superimposed spreading section 134, the layered spreading section 131 is close to the yarn collecting assembly 11, and a first tension detection unit 133 is arranged close to the second superimposed unit 132; the layered spreading section 131 and the superimposed spreading section 134 are both provided with a first driving assembly 14 and a second driving assembly 15, and are respectively connected with a spreading roller 135 and an adjusting roller 136 located in the spreading section thereof.

[0073] In the implementation process, the yarn collecting assembly 11 comprises 4n yarn collecting rollers 111 arranged along the vertical direction, and the first superimposed unit 12 comprises 2n first superimposed rollers arranged along the vertical direction, wherein n is a natural number greater than or equal to 1; the plurality of spreading rollers 135 and the plurality of adjusting rollers 136 arranged alternately in the layered spreading section 131 are correspondingly arranged in 2n groups in the vertical direction with the first superimposed rollers.

[0074] In the vibration assembly 13, the carbon fibers are first subjected to layered spreading, which not only makes the density of the carbon fibers on each layer more uniform, but also reduces the breakage rate of the carbon fibers during the spreading process, while improving the spreading efficiency; the layered spreading section 131 is correspondingly arranged with the yarn collecting assembly 11, so that the carbon fibers are orderly arranged along the width direction of the yarn, and after being introduced into the superimposed spreading section 134 through the second superimposed unit 132, the multi-layer yarn forms a spreading sheet plane.

[0075] As shown in Figures 6 to 8 The first vibration roller 46 and the second vibration roller 47 are respectively arranged on the two support beams 45, the support beam 45 is slidingly connected with the vertically arranged second guide rail, and the connecting seat 451 is arranged at the bottom of the support beam 45; the fourth driving assembly 48 comprises a driving shaft 481 and a second eccentric wheel 482 coaxially rotating with the driving shaft 481, the driving shaft 481 is arranged along the first direction and is driven to rotate by the fourth power device 483, the second eccentric wheel 482 is correspondingly arranged with two on the support beam 45, and is connected with the connecting seat 451 through the second connecting piece 484, the two ends of the second connecting piece 484 are respectively rotationally connected with the second driving wheel and the connecting seat 451.

[0076] The two second eccentric wheels 482 are symmetrically arranged at an angle of 180° with the rotation axis of the driving shaft 481 as the center. The first vibration roller 46 and the second vibration roller 47 are driven to vibrate up and down respectively by the symmetrically arranged second eccentric wheels 482, and the spreading sheet is driven to vibrate, which can weaken the length change of the spreading sheet in the heating mechanism 4, reduce the influence on the tension of the carbon fibers, improve the uniformity of the resin particles, and enhance the resin permeability, maintain the micro-tension state, avoid the dispersion and cracking of the spreading sheet in the powder heating process.

[0077] The first heating film group 41 and the second heating film group 42 respectively adopt heating pipes 411 and aluminum heating plates 421 to heat the fibers; the heating pipes 411 are arranged in a plurality along the first direction, and the aluminum heating plates 421 are arranged in a plurality corresponding to the fiber area.

[0078] The heating mechanism 4 adopts simultaneous heating from top to bottom, the aluminum heating plates of the second heating film group 42 can uniformly heat the carbon fibers, the heating pipes 411 of the first heating film group 41 facilitate control of the heating power, so that 1 / 3 of the inlet section of the heating mechanism 4 is a high-temperature zone, which can quickly melt the resin particles; the remaining 2 / 3 is a heat preservation zone, so that the melted resin has sufficient time to penetrate into the yarn, improving the permeability of the resin.

[0079] As shown in Figure 11 The second pulling mechanism 5 further comprises a cold water pipeline, and the cooling cavities in the second power roller 52 and the second driven roller 53 are communicated with the cold water pipeline through a rotary joint; the second tension detection unit 51 comprises a yarn guide roller 511 and a tension sensor 512 arranged thereon, and the roller surface of the yarn guide roller 511 is higher than the pressing surface of the second power roller 52 and the second driven roller 53.

[0080] The application further discloses a making method of the carbon fiber shaped fiber spreading piece, and the making device of the carbon fiber shaped fiber spreading piece is used, and the method comprises the following steps:

[0081] The carbon fiber tows led out from the creel are introduced into the yarn collecting assembly 11, and sequentially pass through the first superposition unit 12, the layered fiber spreading section 131, the second superposition unit 132, the superposition fiber spreading section 134, the first pulling mechanism 2, the powder scattering mechanism 3, the first vibration roller 46, the heating mechanism 4, the second vibration roller 47 and the second pulling mechanism 5, and finally are wound on the winding mechanism 6.

[0082] The carbon fiber tension in the fiber spreading mechanism 1 is detected by the first tension detection unit 133 arranged close to the second superposition unit 132, and the carbon fiber tension in the heating mechanism 4 is detected by the second tension detection unit 51 arranged close to the second pulling mechanism 5.

[0083] The first pulling mechanism 2 provides a constant conveying speed for the carbon fibers in the fiber spreading mechanism 1, and cooperates with the creel to adjust the carbon fiber tension in the fiber spreading mechanism 1 so that the detection value of the first tension detection unit 133 meets the set interval.

[0084] According to the detection and feedback of the carbon fiber tension at the heating mechanism 4 by the second tension detection unit 51, the pulling speed of the carbon fibers at the heating mechanism 4 is automatically adjusted by the second pulling mechanism 5 matching the pulling speed of the carbon fibers by the first pulling mechanism 2.

[0085] The first vibration roller 46 and the second vibration roller 47 on both sides of the heating mechanism 4 are driven to vibrate up and down by the fourth drive, the unwinding shaft 61 is driven to wind the carbon fiber sheet by the eighth power device 64, and the release paper set thereon is unwound and wound together with the carbon fiber sheet by the ninth power device 65 driving the air expansion shaft 62 and the winding shaft 61.

[0086] Further, by controlling the power of the plurality of heating pipes 411 in the first heating film group 41 in the heating mechanism 4 respectively, a high-temperature zone and a heat preservation zone are formed in the heating mechanism 4.

[0087] The high-temperature zone and the heat preservation zone are located at the feeding end and the discharging end of the heating mechanism 4 respectively, wherein the heating zone occupies 1 / 3 of the heating mechanism 4, and the heat preservation zone occupies 2 / 3 of the heating mechanism 4.

[0088] The first pulling mechanism 2 pulls the carbon fiber yarn at a constant speed, and the unwinding reel provides initial tension for the carbon fiber in the fiber spreading mechanism 1, and the second drive assembly 15 arranged in the fiber spreading mechanism 1 further adjusts the tension of the carbon fiber to meet the fiber spreading tension requirement. According to the second tension detection unit 51 detecting the tension of the carbon fiber in the heating mechanism 4 and feeding back to the control center, the second pulling mechanism 5 matches the pulling speed of the first pulling mechanism 2, so that the carbon fiber in the heating mechanism 4 can meet the micro-tension requirement of the powdering and heating setting section.

[0089] It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An apparatus for making a carbon fiber shaped spreader sheet, characterized by comprising: a carbon fiber sheet supply device; a carbon fiber sheet shaping device; a carbon fiber sheet spreading device; and a carbon fiber sheet cutting device. The base frame, the fiber spreading mechanism, the first pulling mechanism, the powder scattering mechanism, the heating mechanism, the second pulling mechanism and the winding mechanism are arranged in sequence along a first direction, and the first direction is arranged along the fiber conveying direction; The fiber spreading mechanism comprises a yarn collecting assembly, a first superposition unit and a vibration assembly arranged along the first direction, the yarn collecting assembly comprises a plurality of yarn collecting rollers arranged along a vertical direction, the vibration assembly comprises fiber spreading rollers and adjusting rollers arranged alternately along the first direction, a plurality of the fiber spreading rollers are driven to reciprocate along a second direction by a first driving assembly, a plurality of the adjusting rollers are driven to move along the vertical direction by a second driving assembly, and the second direction and the first direction are arranged vertically in a horizontal plane; The first pulling mechanism comprises a first driving roller and a first driven roller, the first driving roller is driven to rotate by a fifth power device, and the first driven roller is driven to press tightly towards the first driving roller by a swing arm assembly; The powder scattering mechanism comprises a hopper, a needle roller and a vibrating brush, the needle roller is arranged at a discharge port at the bottom of the hopper and is driven to rotate by a sixth power device, and the vibrating brush is arranged correspondingly with the needle roller and is driven to reciprocate along the axial direction of the needle roller by a third driving assembly; First and second vibration rollers are arranged respectively at the inlet and outlet of the heating mechanism, the first and second vibration rollers are driven to move along the vertical direction by a fourth driving assembly, the heating mechanism comprises first and second heating film groups arranged respectively on the upper and lower sides of the fiber, and is driven to move towards or away from the fiber by a first and a second cylinder respectively; A second tension detection unit is arranged on the side of the second pulling mechanism close to the heating mechanism, the second pulling mechanism comprises a second driving roller and a second driven roller, the second driving roller is driven to rotate by a seventh power device, and the second driven roller is driven to press tightly towards the second driving roller by a third cylinder; The winding mechanism comprises a winding shaft, an inflatable shaft and a tension adjusting assembly, the winding shaft and the inflatable shaft are driven to rotate by an eighth power device and a ninth power device respectively.

2. The apparatus for making a carbon fiber sizing and unwinding sheet according to claim 1, wherein The first driving assembly comprises a first power device, a transmission shaft and a first eccentric wheel, the transmission shaft is arranged along the first direction and is driven to rotate by the first power device, and the first eccentric wheel is sleeved on the transmission shaft and rotates coaxially with the transmission shaft; Both ends of the fiber spreading roller are arranged on a linear bearing seat, the first eccentric wheel is provided with a plurality of first connecting members corresponding to the fiber spreading roller and connected to one end of the fiber spreading roller, and both ends of the first connecting member are rotatably connected with the first eccentric wheel and one end of the fiber spreading roller.

3. The apparatus according to claim 1, wherein The second driving assembly comprises a second power device, a worm assembly, a mounting vertical plate and a first guide rail arranged along the vertical direction, and the mounting vertical plate is slidably connected with the first guide rail; The end of the adjusting roller is arranged on the mounting vertical plate, and the worm assembly is driven by the second power device to move the mounting vertical plate along the vertical direction.

4. The apparatus according to claim 1, wherein The vibration assembly comprises a layered unwinding section arranged along a first direction, a second superimposing unit, and a superimposed unwinding section, the layered unwinding section is close to the yarn collecting assembly, and a first tension detection unit is arranged close to the second superimposing unit; The layered unwinding section and the superimposed unwinding section are respectively provided with a first driving assembly and a second driving assembly, and are connected with the unwinding roller and the adjusting roller in the unwinding section.

5. The apparatus according to claim 1, wherein The first vibration roller and the second vibration roller are respectively arranged on two support beams, the support beams are slidingly connected with the vertically arranged second guide rails, and the support beams are provided with connecting seats at the bottom. The fourth driving assembly comprises a driving shaft and a second eccentric wheel coaxially rotating with the driving shaft, the driving shaft is arranged along a first direction and is driven to rotate by a fourth power device, the second eccentric wheel is arranged in correspondence with the support beam and has two, and is connected with the connecting seat through a second connecting piece, and the two ends of the second connecting piece are respectively connected with the second eccentric wheel and the connecting seat.

6. The apparatus according to claim 5, wherein The two second eccentric wheels are arranged symmetrically at an angle of 180° with the rotation axis of the driving shaft as the center.

7. The apparatus according to claim 1, wherein The first heating film group and the second heating film group respectively use a heating tube and an aluminum heating plate to heat the fibers. The heating tube is arranged along a first direction and has a plurality of heating tubes, and the aluminum heating plate is arranged with a plurality of aluminum heating plates corresponding to the fiber area.

8. The apparatus according to claim 1, wherein The second pulling mechanism further comprises a cold water pipeline, and the cooling cavities in the second power roller and the second driven roller are communicated with the cold water pipeline through a rotary joint. The second tension detection unit comprises a yarn guide roller and a tension sensor arranged thereon, and the roller surface of the yarn guide roller is higher than the pressing surface of the second power roller and the second driven roller.

9. A method of making a carbon fiber shaped spreader sheet, characterized by, The device for making the carbon fiber shaping and unwinding sheet according to any one of the above claims 1-8 comprises the following steps: A plurality of carbon fiber tows led out from the creel are introduced into the yarn collecting assembly, and sequentially pass through the first superimposing unit, the layered unwinding section, the second superimposing unit, the superimposed unwinding section, the first pulling mechanism, the powder scattering mechanism, the first vibration roller, the heating mechanism, the second vibration roller, and the second pulling mechanism, and are finally wound on the winding mechanism; The carbon fiber tension in the unwinding mechanism is detected by the first tension detection unit arranged close to the second superimposing unit, and the carbon fiber tension in the heating mechanism is detected by the second tension detection unit arranged close to the second pulling mechanism; The first pulling mechanism provides a constant conveying speed for the carbon fiber in the unwinding mechanism, and cooperates with the creel to adjust the carbon fiber tension in the unwinding mechanism so that the detection value of the first tension detection unit meets the set interval; According to the detection and feedback of the carbon fiber tension at the heating mechanism by the second tension detection unit, the pulling speed of the carbon fiber at the heating mechanism is automatically adjusted by the second pulling mechanism matching the pulling speed of the carbon fiber by the first pulling mechanism; The first vibration roller and the second vibration roller on both sides of the heating mechanism are driven to vibrate up and down by the fourth driving assembly, the winding shaft is driven to wind the unwinding sheet by the eighth power device, and the release paper sleeved thereon is unwound and wound together with the unwinding sheet by the inflation shaft driven by the ninth power device.

10. The method of claim 9, wherein the carbon fiber sheet is a carbon fiber sheet for a carbon fiber reinforced plastic. By controlling the power of the heating pipes in the first heating film group in the heating mechanism respectively, a high-temperature zone and a heat preservation zone are formed inside the heating mechanism; The high-temperature zone and the heat preservation zone are respectively located at the feeding end and the discharging end of the heating mechanism, wherein the heating zone occupies 1 / 3 of the heating mechanism, and the heat preservation zone occupies 2 / 3 of the heating mechanism.

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