Constant tension unwinding device for carbon fiber prepreg impregnation

Abstract

The utility model discloses a constant tension unwinding device for carbon fiber prepreg impregnation, it includes: silk releasing subassembly, silk penetrating subassembly, tension measuring component, tension adjusting component, a plurality of guide silk subassembly and controller, silk releasing subassembly includes first support, and the top surface on the top plate of first support rotates and installs a plurality of silk releasing shafts, and the bottom surface on the top plate of first support fixedly installs a plurality of magnetic powder brake, silk penetrating subassembly includes silk penetrating plate, is equipped with a plurality of silk penetrating holes on silk penetrating plate, and a plurality of silk pressing frame are fixedly installed on silk penetrating plate, and a plurality of tension detectors are installed on tension measuring component, and tension adjusting component includes third support, and a plurality of lifting frames are slidably installed to the top of third support, and the top of lifting frame rotates and installs adjusting roller. The utility model can carry out accurate tension control and real -time measurement to each carbon fiber silk, ensures that carbon fiber keeps stable in silk releasing process tension, makes carbon fiber silk's infiltration more uniform, improves carbon fiber prepreg's quality and consistency.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber prepreg production equipment, and in particular to a constant tension unwinding device for impregnating carbon fiber prepreg. Background Technology

[0002] In medical device manufacturing, extremely high material performance is required. Carbon fiber composites, due to their high strength, high modulus, low density, and good biocompatibility, are increasingly widely used in the medical device field. However, there are some problems in the preparation process of carbon fiber prepregs used for weaving. For example, in traditional prepreg preparation processes, the unwinding tension of carbon fibers is unstable, resulting in the resin not being able to uniformly impregnate the carbon fibers during the impregnation process. This leads to inconsistent prepreg quality, affecting the performance of the final medical device product. Moreover, existing unwinding devices lack precise tension control, making it difficult to meet the stringent requirements for high quality and consistency of prepregs used in medical devices. Utility Model Content

[0003] The purpose of this invention is to provide a constant tension unwinding device for impregnating carbon fiber prepreg, which can accurately control and measure the tension of each bundle of carbon fiber filaments in real time, ensuring that the tension of the carbon fiber remains stable during the unwinding process, making the impregnation of the carbon fiber filaments more uniform, and improving the quality and consistency of the carbon fiber prepreg.

[0004] To achieve the above and other related objectives, this utility model provides a constant tension unwinding device for impregnating carbon fiber prepreg, comprising: a wire feeding assembly, a wire threading assembly, a tension measuring assembly, a tension adjusting assembly, several wire guiding assemblies, and a controller. The wire feeding assembly includes a first support, with several wire feeding shafts rotatably mounted on the top surface of the top plate of the first support, and several magnetic powder brakes fixedly mounted on the bottom surface of the top plate of the first support. The bottom ends of the several wire feeding shafts are respectively fixedly connected to the output ends of the several magnetic powder brakes. The wire threading assembly includes a wire threading plate with several wire threading holes. Several wire pressing frames are fixedly mounted on the surface of the wire threading plate away from the first support, and the several wire pressing frames respectively cooperate with the several wire threading holes. A first pressure roller is rotatably mounted on the bottom of the inner wall of each wire pressing frame, and a second pressure roller is vertically mounted on the wire pressing frame above the first pressure roller. The first pressure roller cooperates with the second pressure roller; the tension measuring assembly includes a second bracket, on the top surface of the second bracket along its extension direction, several tension detectors are fixedly installed; the tension adjusting assembly includes a third bracket, on the top of the third bracket, several lifting frames are slidably installed, and an adjusting roller is rotatably installed on the top of each lifting frame; the third bracket is provided with several first driving devices, and the lifting frames are respectively drivenly connected to the several first driving devices for driving the lifting frames to rise and fall; a guide wire assembly is provided on both sides of the tension measuring assembly and the tension adjusting assembly, and several guide wire rollers are rotatably installed on each guide wire assembly, the installation height of the guide wire rollers being lower than the installation height of the tension detectors and the adjusting rollers; the controller is electrically connected to the several magnetic powder brakes, the several tension detectors, and the several first driving devices.

[0005] In one example of the constant tension unwinding device for impregnating carbon fiber prepreg of this utility model, the number of the unwinding shaft, the threading hole, the tension detector, the adjusting roller and the guide roller are equal.

[0006] In one example of the constant tension unwinding device for impregnating carbon fiber prepreg of this utility model, several unwinding shafts are arranged in two rows and staggered, and a support plate is fixedly installed at the bottom of each unwinding shaft. The unwinding shaft is an air-expanding shaft.

[0007] In one example of the constant tension unwinding device for impregnating carbon fiber prepreg of this utility model, a first mounting plate is fixedly installed on the top of the threading plate on the side away from the first support. A plurality of first cylinders are installed on the top of the first mounting plate. The telescopic ends of the plurality of first cylinders pass through the first mounting plate and are fixedly connected to the top surface of the lifting plate. The lifting plate is drivenly connected to a plurality of second pressure rollers.

[0008] In one example of the constant tension unwinding device for impregnating carbon fiber prepreg of this utility model, the two ends of the second pressure roller are rotatably connected to the pressure roller seat, the top of the pressure roller seat is fixedly installed with a lifting rod, the lifting rod passes through the top of the pressing frame and is fixedly connected to the bottom surface of the lifting plate.

[0009] In one example of the constant tension unwinding device for impregnating carbon fiber prepreg of this utility model, the third support includes a top frame and several bases. The bottom surface of the top frame is fixedly connected to the top surface of several bases. Several lifting frames are inserted through and slidably installed on the top plate of the top frame. Several first driving devices are installed on the bottom plate of the top frame.

[0010] In one example of the constant tension unwinding device for impregnating carbon fiber prepreg of this utility model, the first driving device includes a first driving motor, a lead screw is fixedly installed at the output end of the first driving motor, a threaded sleeve and two guide plates are fixedly installed at the bottom of the lifting frame, the two guide plates are respectively located on both sides of the threaded sleeve, the threaded sleeve and the two guide plates are respectively passed through and slidably installed on the top plate of the top frame, and the threaded sleeve is threadedly connected to the lead screw.

[0011] In one example of the constant tension unwinding device for impregnating carbon fiber prepreg of this utility model, a limiting protrusion is provided at the bottom of the surface of the guide plate away from the wire sleeve.

[0012] In one example of the constant tension unwinding device for impregnating carbon fiber prepreg of this utility model, an adjusting roller mounting seat is fixedly installed on the top of the lifting frame, and the two ends of the adjusting roller are respectively rotatably connected to the adjusting roller mounting seat.

[0013] This invention relates to a constant tension unwinding device for impregnating carbon fiber prepreg. The unwinding assembly uses several unwinding shafts to mount carbon fiber filaments. Several magnetic powder brakes control the tension of each unwinding shaft, guiding the carbon fiber filaments through the threading holes and pressure frames, positioning them between the first and second pressure rollers. The second pressure roller descends, flattening the carbon fiber filaments and improving impregnation quality. Several tension detectors monitor the tension of each bundle of carbon fiber filaments. Several first drive devices drive several lifting frames, which in turn drive adjusting rollers. These adjusting rollers control the tension of each bundle of carbon fiber filaments. A controller sets the tension for each bundle, and the magnetic powder brakes and adjusting rollers regulate the real-time tension, maintaining it within the set range. This invention provides precise tension control and real-time measurement for each bundle of carbon fiber filaments, ensuring stable tension during unwinding, resulting in more uniform impregnation and improved quality and consistency of the carbon fiber prepreg. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the constant tension unwinding device for impregnating carbon fiber prepregs according to the present invention. Figure 2 This is a top view of the unwinding assembly in one embodiment of the constant tension unwinding device for impregnating carbon fiber prepreg according to the present invention. Figure 3 This is a rear view of the threading assembly in one embodiment of the constant tension unwinding device for impregnating carbon fiber prepreg according to the present invention. Figure 4 This is a front view of the threading assembly in one embodiment of the constant tension unwinding device for impregnating carbon fiber prepreg according to this utility model; Figure 5 This is a schematic diagram of the tension measuring component in one embodiment of the constant tension unwinding device for impregnating carbon fiber prepreg of the present invention; Figure 6 This is a schematic diagram of the tension adjustment component in one embodiment of the constant tension unwinding device for impregnating carbon fiber prepreg of the present invention; Figure 7 This is a schematic diagram of the guide wire assembly in one embodiment of the constant tension unwinding device for impregnating carbon fiber prepreg of this utility model.

[0015] Component designation: 100 Wire feeding assembly; 110 First support; 120 Wire feeding shaft; 130 Magnetic powder brake; 140 Support plate; 200 Wire threading assembly; 210 Wire threading plate; 211 First mounting plate; 212 First cylinder; 213 Lifting plate; 220 Wire threading hole; 230 Wire pressing frame; 231 First pressure roller; 232 Second pressure roller; 233 Pressure roller seat; 234 Lifting rod; 300 Tension measuring assembly; 310 Second support; 320 Tension detector; 400 Tension adjusting assembly; 410 Third support; 411 Top frame; 412 Base; 420 Lifting frame; 421 Wire sleeve; 422 Guide plate; 423 Adjusting roller mounting seat; 430 First drive device; 431 First drive motor; 432 Lead screw; 440 Adjusting roller; 500 Wire guiding assembly; 510 Wire guiding roller; 600 Carbon fiber filament roll. Detailed Implementation

[0016] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0017] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise specified in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, equipment, and materials similar to or equivalent to those in the embodiments of this invention.

[0018] Please see Figures 1 to 7This utility model provides a constant tension unwinding device for impregnating carbon fiber prepreg, which includes: a wire feeding assembly 100, a wire threading assembly 200, a tension measuring assembly 300, a tension adjusting assembly 400, a plurality of wire guiding assemblies 500 and a controller. The wire feeding assembly 100 includes a first support 110, a plurality of wire feeding shafts 120 are rotatably mounted on the top surface of the top plate of the first support 110, and a plurality of magnetic powder brakes 130 are fixedly mounted on the bottom surface of the top plate of the first support 110. The bottom ends of the plurality of wire feeding shafts 120 are respectively fixedly connected to the output ends of the plurality of magnetic powder brakes 130. The threading assembly 200 includes a threading plate 210 with a plurality of threading holes 220. A plurality of pressure frames 230 are fixedly mounted on the surface of the threading plate 210 away from the first support 110. Each pressure frame 230 cooperates with one of the threading holes 220. A first pressure roller 231 is rotatably mounted on the bottom of the inner wall of each pressure frame 230. A second pressure roller 232 is vertically mounted on the pressure frame 230 above the first pressure roller 231, and the first pressure roller 231 cooperates with the second pressure roller 232. The tension measuring assembly 300 includes a second support 310 with a plurality of tension detectors 320 fixedly mounted on the top surface of the second support 310 along its extending direction. The tension adjustment assembly 400 includes a third bracket 410, with several lifting frames 420 slidably mounted through and on the top of the third bracket 410. Each lifting frame 420 has an adjusting roller 440 rotatably mounted on its top. The third bracket 410 is equipped with several first driving devices 430, and the lifting frames 420 are respectively driven and connected to the first driving devices 430 for driving the lifting frames 420 to rise and fall. A wire guide assembly 500 is provided on each side of the tension measuring assembly 300 and the tension adjustment assembly 400. Several wire guide rollers 510 are rotatably mounted on each wire guide assembly 500, and the installation height of the wire guide rollers 510 is lower than the installation height of the tension detector 320 and the adjusting rollers 440. The controller is electrically connected to several magnetic powder brakes 130, several tension detectors 320, and several first driving devices 430.

[0019] The fiber feeding assembly 100 of this invention mounts carbon fiber spools 600 via several fiber feeding shafts 120, and the tension of each fiber feeding shaft 120 can be controlled by several magnetic powder brakes 130. Figure 1The carbon fiber filaments are threaded through the threading hole 220 and the pressure frame 230, positioned between the first pressure roller 231 and the second pressure roller 232. The second pressure roller 232 is driven to descend, flattening the carbon fiber filaments using the first and second pressure rollers 231 and 232, resulting in a smoother filament and improved impregnation quality. Several tension detectors 320 detect the tension of each bundle of carbon fiber filaments. Several first drive devices 430 drive several lifting frames 420 to rise and fall, thereby driving the adjusting roller 440 to rise and fall. The adjusting roller 440 controls the tension variation of each bundle of carbon fiber filaments. The tension of each bundle of carbon fiber filaments can be set by the controller, and then the real-time tension of each bundle of carbon fiber filaments is adjusted by the raising and lowering of the magnetic powder brake 130 and the adjusting roller 440 to maintain it within the set tension range. When the tension of the carbon fiber filaments fluctuates significantly, the magnetic powder brake 130 is first controlled to adjust the unwinding tension, and then the adjusting roller 440 is driven to rise and fall precisely to adjust the tension of the carbon fiber filaments.

[0020] In one example of the constant tension unwinding device for impregnating carbon fiber prepreg of this utility model, the number of the unwinding shaft 120, the threading hole 220, the tension detector 320, the adjusting roller 440 and the guide roller 510 are equal.

[0021] Please see Figure 1 and Figure 2 In one example of the constant tension unwinding device for impregnating carbon fiber prepreg of this utility model, several unwinding shafts 120 are arranged in two rows and staggered, and a support plate 140 is fixedly installed at the bottom of each unwinding shaft 120. The unwinding shaft 120 is an air-expanding shaft.

[0022] Please see Figure 1 and Figure 3 In one example of the constant tension unwinding device for impregnating carbon fiber prepreg of this utility model, a first mounting plate 211 is fixedly installed on the top of the threading plate 210 on the side away from the first support 110. A plurality of first cylinders 212 are installed on the top of the first mounting plate 211. The telescopic ends of the plurality of first cylinders 212 pass through the first mounting plate 211 and are fixedly connected to the top surface of the lifting plate 213. The lifting plate 213 is drivenly connected to a plurality of second pressure rollers 232.

[0023] Please see Figure 1 and Figure 3In one example of the constant tension unwinding device for impregnating carbon fiber prepreg of this utility model, the two ends of the second pressure roller 232 are rotatably connected to the pressure roller seat 233. A lifting rod 234 is fixedly installed on the top of the pressure roller seat 233. The lifting rod 234 passes through the top of the pressing frame 230 and is fixedly connected to the bottom surface of the lifting plate 213. The lifting plate 213 can be driven to rise and fall by the first cylinder 212. The lifting rod 234 can be driven to rise and fall by the lifting plate 213, thereby driving the pressure roller seat 233 and the second pressure roller 232 to rise and fall. The pressure of the second pressure roller 232 on the carbon fiber filament can be adjusted by adjusting the air pressure of the first cylinder 212.

[0024] Please see Figure 1 and Figure 6 In one example of the constant tension unwinding device for impregnating carbon fiber prepreg of this utility model, the third support 410 includes a top frame 411 and a plurality of bases 412. The bottom surface of the top frame 411 is fixedly connected to the top of the plurality of bases 412. A plurality of lifting frames 420 are inserted through and slidably installed on the top plate of the top frame 411. A plurality of first driving devices 430 are installed on the bottom plate of the top frame 411.

[0025] Please see Figure 1 and Figure 6 In one example of the constant tension unwinding device for impregnating carbon fiber prepreg of this utility model, the first driving device 430 includes a first driving motor 431, and a lead screw 432 is fixedly installed at the output end of the first driving motor 431. A threaded sleeve 421 and two guide plates 422 are fixedly installed at the bottom of the lifting frame 420. The two guide plates 422 are respectively located on both sides of the threaded sleeve 421. The threaded sleeve 421 and the two guide plates 422 are respectively passed through and slidably installed on the top plate of the top frame 411. The threaded sleeve 421 is threadedly connected to the lead screw 432. A limiting protrusion is provided at the bottom of the surface of the guide plate 422 away from the threaded sleeve 421. An adjusting roller mounting seat 423 is fixedly installed at the top of the lifting frame 420, and both ends of the adjusting roller 440 are rotatably connected to the adjusting roller mounting seat 423.

[0026] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A constant tension unwinding device for impregnating carbon fiber prepreg, characterized in that, include: A wire feeding assembly includes a first bracket, a plurality of wire feeding shafts are rotatably mounted on the top surface of the top plate of the first bracket, and a plurality of magnetic powder brakes are fixedly mounted on the bottom surface of the top plate of the first bracket. The bottom ends of the plurality of wire feeding shafts are respectively fixedly connected to the output ends of the plurality of magnetic powder brakes. The threading assembly includes a threading plate with a plurality of threading holes. A plurality of pressing frames are fixedly installed on the surface of the threading plate away from the first support. The pressing frames are respectively engaged with the threading holes. A first pressing roller is rotatably installed on the bottom of the inner wall of each pressing frame. A second pressing roller is vertically mounted on the pressing frame above the first pressing roller. The first pressing roller and the second pressing roller are engaged. A tension measuring assembly, comprising a second bracket, wherein a plurality of tension detectors are fixedly mounted on the top surface of the second bracket along the extending direction of the second bracket; A tension adjustment assembly includes a third support, a plurality of lifting frames are slidably mounted on the top of the third support, an adjustment roller is rotatably mounted on the top of each lifting frame, and a plurality of first driving devices are provided on the third support. The plurality of lifting frames are respectively drivenly connected to the plurality of first driving devices for driving the lifting frames to rise and fall. A plurality of wire guide assemblies are provided, with one wire guide assembly on each side of the tension measuring assembly and the tension adjusting assembly. A plurality of wire guide rollers are rotatably mounted on each wire guide assembly, and the mounting height of the wire guide rollers is lower than the mounting height of the tension detector and the adjusting rollers. The controller is electrically connected to a plurality of the magnetic powder brakes, a plurality of the tension detectors, and a plurality of the first drive devices.

2. The constant tension unwinding device for impregnating carbon fiber prepreg as described in claim 1, characterized in that, The number of the wire feeding shaft, the wire threading hole, the tension detector, the adjusting roller, and the guide roller are equal.

3. The constant tension unwinding device for impregnating carbon fiber prepreg as described in claim 1, characterized in that, The several feeding shafts are arranged in two rows and staggered. A support plate is fixedly installed at the bottom of each feeding shaft. The feeding shaft is an air-expanding shaft.

4. The constant tension unwinding device for impregnating carbon fiber prepreg as described in claim 1, characterized in that, A first mounting plate is fixedly installed on the top of the threading plate on the side away from the first support. A plurality of first cylinders are installed on the top of the first mounting plate. The telescopic ends of the plurality of first cylinders pass through the first mounting plate and are fixedly connected to the top surface of the lifting plate. The lifting plate is drivenly connected to a plurality of second pressure rollers.

5. The constant tension unwinding device for impregnating carbon fiber prepreg as described in claim 4, characterized in that, The two ends of the second pressure roller are rotatably connected to the pressure roller seat. A lifting rod is fixedly installed on the top of the pressure roller seat. The lifting rod passes through the top of the wire pressing frame and is fixedly connected to the bottom surface of the lifting plate.

6. The constant tension unwinding device for impregnating carbon fiber prepreg as described in claim 1, characterized in that, The third support includes a top frame and several bases. The bottom surface of the top frame is fixedly connected to the top surface of the several bases. Several lifting frames are inserted through and slidably installed on the top plate of the top frame. Several first driving devices are installed on the bottom plate of the top frame.

7. The constant tension unwinding device for impregnating carbon fiber prepreg as described in claim 6, characterized in that, The first driving device includes a first driving motor, a lead screw is fixedly installed at the output end of the first driving motor, a lead sleeve and two guide plates are fixedly installed at the bottom of the lifting frame, the two guide plates are respectively located on both sides of the lead sleeve, the lead sleeve and the two guide plates are respectively passed through and slidably installed on the top plate of the top frame, and the lead sleeve is threadedly connected to the lead screw.

8. The constant tension unwinding device for impregnating carbon fiber prepreg as described in claim 7, characterized in that, The bottom of the guide plate on the side away from the wire sleeve is provided with a limiting protrusion.

9. The constant tension unwinding device for impregnating carbon fiber prepreg as described in claim 7, characterized in that, The top of the lifting frame is fixedly installed with an adjusting roller mounting base, and both ends of the adjusting roller are rotatably connected to the adjusting roller mounting base.

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