WO2020215594A1 - Dispositif et système d'alimentation en fibres - Google Patents

Dispositif et système d'alimentation en fibres Download PDF

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Publication number
WO2020215594A1
WO2020215594A1 PCT/CN2019/106046 CN2019106046W WO2020215594A1 WO 2020215594 A1 WO2020215594 A1 WO 2020215594A1 CN 2019106046 W CN2019106046 W CN 2019106046W WO 2020215594 A1 WO2020215594 A1 WO 2020215594A1
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WO
WIPO (PCT)
Prior art keywords
fiber
feeding device
rod
fiber feeding
pressing
Prior art date
Application number
PCT/CN2019/106046
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English (en)
Chinese (zh)
Inventor
吕伟
袁林
李芳�
曾梦琪
贾宇霖
段志平
Original Assignee
深圳市银宝山新科技股份有限公司
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Publication date
Application filed by 深圳市银宝山新科技股份有限公司 filed Critical 深圳市银宝山新科技股份有限公司
Publication of WO2020215594A1 publication Critical patent/WO2020215594A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
    • B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
    • B29B15/10—Coating or impregnating independently of the moulding or shaping step
    • B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
    • B29B15/14—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length of filaments or wires

Definitions

  • This application relates to the field of fiber feeding, in particular to a fiber feeding device and a fiber feeding system.
  • LFT-D Long fiber reinforced thermoplastic material direct molding technology
  • the fibers are difficult to disperse due to the polymerization of the fibers during the fiber feeding process, resulting in poor fiber wetting effect.
  • the main purpose of this application is to propose a fiber feeding device, which aims to solve the technical problem of poor fiber infiltration effect in the existing fiber feeding process.
  • the fiber feeding device proposed in this application includes:
  • the fiber routing frame has an inlet side and an outlet side.
  • the fiber routing frame includes at least two pressing convex edges.
  • the pressing convex edges are sequentially arranged along the direction from the inlet side to the outlet side, and are adjacent to each other.
  • the direction of the two pressing convex edges is staggered, and the pressing convex edge is arranged to press the fibers when the fibers enter the fiber routing frame to change the feeding direction of the fibers.
  • the fiber cable rack includes a mounting plate and a pressing rod, and the pressing rod is arranged on the mounting plate and is formed with the pressing convex edge.
  • the pressing convex edges extend in a direction perpendicular to the mounting plate and are parallel to each other.
  • the pressing rod is a square rod with a square cross-section.
  • the fiber feeding device further includes a sensing element arranged on the outlet side of the fiber routing frame and configured to sense and feed back fiber tension;
  • the pressure rod includes an adjustment rod, and
  • the adjusting rod can be movably arranged on the mounting plate, and is arranged to adjust the position on the mounting plate according to the fiber tension fed back by the sensing element.
  • the fiber feeding device further includes a driving device, the driving device is electrically connected to the sensing element and connected to the adjusting rod, and the driving device is configured to adjust the adjusting rod in the installation The position of the board.
  • the mounting plate is formed with a sliding groove, the length direction of the sliding groove is staggered with the fiber feeding direction, and the adjusting rod is slidably arranged in the sliding groove.
  • the sliding groove extends in a vertical direction.
  • the pressing rod further includes a fixing rod, and the fixing rod is arranged on the mounting plate and located between the adjusting rod and the sensing element.
  • the fixed rod is configured as a square rod with a square cross-section.
  • a guide rod is further provided on the mounting plate, and the guide rod is located on a side of the fixed rod close to the exit side of the fiber routing frame.
  • the sensing element is arranged on the guide rod.
  • the guide rod and the closest fixed rod are located at the same level.
  • the distance between two adjacent pressing convex edges is 2-6 cm.
  • the diameter of the guide rod is 1-3 cm.
  • the distance between the adjacent pressing flange and the guide rod is 1-3 cm.
  • This application also proposes a fiber feeding system, including a fiber feeding device and a box body, wherein the fiber feeding device is arranged in the box body, and the fiber feeding device includes: a fiber wire rack having a On the wire inlet side and the wire outlet side, the fiber cable rack includes at least two pressing convex edges, the pressing convex edges are sequentially arranged along the direction from the wire inlet side to the outlet side, and two adjacent pressing convex edges The direction is staggered, and the pressing convex edge is arranged to press the fiber when the fiber enters the fiber routing frame to change the feeding direction of the fiber.
  • the technical solution of the present application presses the fibers in the feed through the pressing flange of the fiber routing frame, thereby changing the feeding direction of the fibers.
  • concentrated stress can be applied to the fibers in the feed, so that The polymerized fiber is gradually dispersed during the feeding process.
  • the fiber feeding device of the present application has the advantage of improving the fiber infiltration effect.
  • Figure 1 is a schematic structural diagram of an embodiment of the fiber feeding system of the present application.
  • Figure 2 is a schematic structural diagram of an embodiment of a fiber feeding device of the application
  • Fig. 3 is a schematic structural diagram of another embodiment of the fiber feeding system of the present application.
  • this application proposes a fiber feeding system, including a fiber feeding device 100 and a box 200.
  • the fiber feeding device 100 is arranged in the box 200, and the fiber feeding device 100 can be protected and installed through the box 200.
  • a fiber roll unwinding position is provided in the box 200, and a fiber conduit 210 communicating with the inside of the box 200 is provided on the outside of the box 200.
  • the fiber leaves from the unwinding position passes through the fiber feeding device 100, enters the fiber duct 210, and enters the injection molding machine under the guidance of the fiber duct 210 to be cut.
  • the fiber feeding device 100 includes a fiber routing rack 100a, and the fiber routing rack 100a has an inlet side and an outlet side. And the fiber routing frame 100a also has at least two pressing convex edges, the pressing convex edges are sequentially arranged along the direction from the incoming side to the outlet side of the fiber routing frame 100a, and the directions of the adjacent two pressing convex edges are different.
  • the pressing convex edge of the fiber routing frame 100a is configured to press the fibers when the fibers enter the fiber routing frame 100a to change the feeding direction of the fibers.
  • the fibers are stored in the form of coils before cutting.
  • the fiber roll is unrolled, and the fiber is on the equipment line and moves along the feeding direction.
  • the fiber is not unrolled as a single fiber, but a plurality of fibers are bonded together to form a fiber bundle.
  • rollers are often used to guide them. Since the roller is arranged in a cylindrical shape, when the fiber bundle passes around the roller, the adhered fibers are difficult to disperse, so that the fibers are still adhered to each other when they are infiltrated, resulting in poor fiber infiltration.
  • the pressing convex edge of the fiber routing frame 100a will press against the fiber bundle and change The direction of the fiber. That is, the fiber bundle will be turned after passing through the pressing flange. At this time, at the turning point of the fiber bundle, the fiber bundle will receive concentrated stress from the pressing convex edge. Since each fiber in the fiber bundle has a different contact area and contact point with the pressing flange, the concentrated stress on each fiber is also different. In this way, each fiber in the fiber bundle will be deformed to different degrees. The fibers in the fiber bundle will gradually disperse due to different degrees of deformation.
  • the fiber routing frame 100a needs to include at least two pressing flanges to protect the fibers from damage while dispersing the fibers.
  • the fiber feeding device 100 provided in the present application has the advantages of dispersing the fibers during the fiber feeding process and improving the fiber infiltration effect.
  • the fiber routing rack 100a includes a mounting plate 110 and a pressing rod 120, wherein the pressing rod 120 is disposed on the mounting plate 110 and is formed with a pressing convex edge.
  • the pressure rod 120 is arranged on the mounting plate 110, and the pressure rod 120 forms a pressure convex edge, which can be designed for the mounting plate 110 and the pressure rod 120 respectively, so that the fiber routing frame 100a can be adapted to different applications demand.
  • the position of the pressing rod 120 on the mounting plate 110 can be freely set, so that the fiber routing frame 100a can achieve the best use effect when in use.
  • the fiber wiring rack 100a may also be an integrated design, and the pressing convex edge may be formed by protruding the protrusions on the fiber wiring rack 100a according to a predetermined line.
  • This embodiment further proposes that the pressing convex edge on the pressing rod 120 extends in a direction perpendicular to the mounting board 110, and the pressing convex edges are parallel to each other.
  • the fibers will pass through multiple pressing flanges, and the pressing flanges are set to extend in the direction perpendicular to the mounting plate 110.
  • the pressing flanges can be shortened as much as possible under the premise of dispersing the fibers. To shorten the length of the pressing rod 120. In this way, the occupied space of the fiber feeding device 100 can be reduced to facilitate the installation of the fiber feeding device 100 in the box 200; second, the manufacturing cost of the fiber feeding device 100 can be reduced.
  • the extension direction of the pressing convex edge can also be set at other angles to the mounting plate 110, such as 45°, 50°, 55°, 60°, 75°, 80°, 85° Etc., and the pressing convex edge and the pressing convex edge need not be arranged parallel to each other.
  • the pressing rod 120 is configured as a square rod with a square cross-section, and the square rod extends in a direction perpendicular to the mounting frame, and the edge on the peripheral side of the square rod forms a pressing convex edge.
  • the advantage of using a square rod is that the square rod has four edges, and each edge can be used as a pressing convex edge.
  • the four edges of the square rod are arranged in a ring shape, which can meet the demand for compression of fibers in most cases.
  • the cross section of the square rod is set to a square shape, the lengths between two adjacent pressing convex edges on the same square rod are equal.
  • the advantage of this arrangement is that when the fiber passes through multiple pressing flanges on the same square rod, the length of the fiber between two adjacent pressing flanges is equal, which helps to ensure the stability of the internal tension of the fiber during the feeding process. , So as to keep the fiber feed rate stable and protect the fiber.
  • the fiber feeding device 100 further includes a sensing element (not shown in the figure).
  • the sensing element is arranged on the exit side of the fiber routing rack 100 a and configured to sense and feed back fiber tension.
  • the pressing rod 120 includes an adjusting rod 121 movably arranged on the mounting plate 110 and configured to adjust the position on the mounting plate 110 according to the fiber tension fed back by the sensing element.
  • the position of the adjusting rod 121 on the mounting plate 110 can be adjusted according to the fiber tension detected and fed back by the sensor, so as to adjust the tension during the fiber feeding process to make The fiber feed rate into the mold remains stable.
  • the adjusting rod 121 is connected to a driving device (not shown in the figure), and the driving device is electrically connected to the sensing element.
  • the fiber tension sensed by the sensing element can be fed back to the driving device in real time.
  • the fiber tension threshold is preset in the driving device.
  • the driving device will correspondingly drive the adjusting rod 121 to adjust
  • the position of the rod 121 on the mounting plate 110 adjusts the concentrated stress of the fiber from the pressing flange, thereby controlling the fiber tension. In this way, during the fiber feeding process, the stability of the fiber tension can be ensured, the traveling speed of the fiber can be ensured, and the fiber length distribution can be more uniform, so as to improve the yield of the product.
  • a sliding groove 111 is formed on the mounting plate 110, the length direction of the sliding groove 111 is staggered with the fiber feeding direction, and the adjusting rod 121 is slidably arranged in the sliding groove 111.
  • the adjusting rod 121 is slidably connected to the mounting plate 110 through the sliding groove 111, which realizes the stepless movement of the adjusting rod 121 on the mounting plate 110 to a certain extent. Therefore, after the adjustment rod 121 is matched with the sensing element, the tension of the fiber can be controlled more accurately to ensure the stability of the tension of the fiber during the feeding process.
  • the adjustment rod 121 is in sliding fit with the mounting plate 110, not only the stability of the movement of the adjustment rod 121 is high, but the movement of the adjustment rod 121 is also easy to control. Furthermore, since the adjustment rod 121 is slidably arranged in the chute 111, the movement direction and movement distance of the adjustment rod 121 can be predicted, and the influence of the movement on the fiber tension is also easy to calculate, which makes it easy for the operator to adjust the fiber tension.
  • the sliding groove 111 extends in the vertical direction.
  • the advantage of this arrangement is that it is easier to control the movement of the adjusting rod 121 on the mounting plate 110.
  • the sliding groove 111 may also extend in other directions, such as obliquely extending.
  • the movement path of the adjusting rod 121 may also be set as a curve, or the adjusting rod 121 may also be rotatably arranged on the mounting plate 110.
  • the operator can also manually control the position of the adjustment rod 121 to adjust the fiber tension.
  • the position of the adjusting rod 121 is adjusted manually, after the fiber tension is fed back by the sensor, the operator will adjust the position of the rod 121 according to the fiber tension and the position of the adjusting rod 121 (with the adjusting rod 121 extending along the vertical chute 111 sliding as an example, the position of the adjusting rod 121 is the corresponding relationship of the height of the adjusting rod 121 compared to the chute 111, and the position of the adjusting rod 121 is adjusted.
  • the position of the adjusting rod 121 only needs to be adjusted once, and the fiber tension can be maintained within a certain range.
  • the precision of fiber tension control is slightly lacking, it is simpler and more energy-saving, and can be set in some products that require relatively low fiber length distribution uniformity.
  • the fiber pressing rod 120 further includes a fixing rod 122 disposed on the mounting plate 110 and located between the adjusting rod 121 and the sensing element.
  • the fixing rod 122 Through the pressing convex edge on the fixing rod 122, the pressing against the fiber can be increased, so as to improve the dispersion degree of the fiber and increase the control of the fiber tension.
  • the fixed rod 122 also has the function of adjusting the fiber tension, arranging the fixed rod 122 between the adjusting rod 121 and the sensing element can improve the accuracy of sensing the fiber tension by the sensing element, so as to control the fiber tension more accurately.
  • the fixed rod 122 is also set as a square rod with a square cross-section. It should be noted that in other embodiments of the present application, the fixed rod 122 may also be arranged on the side of the adjusting rod 121 away from the sensing element.
  • adjusting rods 121 and fixing rods 122 can be provided on the mounting plate 110 to obtain the best wetting effect and more uniform length distribution of the fibers.
  • the number of fixed rods 122 may be zero.
  • the mounting plate 110 is further provided with a guide rod 130, and the guide rod 130 is located on the side of the fixed rod 122 close to the outlet side of the fiber routing frame 100a. It can be seen from the above that when the fiber passes through the guide rod 130, its internal tension will hardly change. Therefore, a guide rod 130 is provided on the mounting plate 110 to adjust the direction of the fiber on the fiber routing frame 100a. For fiber in and out.
  • the guide rod 130 is arranged on the fixed rod 122 close to the exit side of the fiber routing frame 100a, and can be matched with the fixed rod 122 so that the fixed rod 122 can press the fiber without affecting the sensing and feedback of the fiber tension by the sensor.
  • this embodiment further proposes that the sensing element is arranged on the guide rod 130. It can be understood that the internal tension hardly changes when the fiber passes through the guide rod 130, and the sensing element needs to be in contact with the fiber to detect the fiber tension. Therefore, arranging the sensing element on the guide rod 130 can improve the integration of the fiber feeding device 100 while ensuring the measurement accuracy of the fiber tension, so as to reduce the occupied space of the fiber feeding device 100.
  • the sensing element is a tension sensor provided on the guide rod 130. It should be noted that in other embodiments of the present application, the sensing element may also be other sensing devices capable of detecting fiber tension.
  • the location of the sensing element is not limited, as long as the sensing element is provided on the exit side of the fiber routing frame 100a and a certain detection accuracy can be ensured.
  • the fiber tension induced by the sensing element is further improved.
  • the guide circle The rod 130 and the outlet side of the fiber routing frame 100a are located in the same vertical direction, and are located at the same level as the closest fixed rod 122, or at the same level as possible.
  • the technical solution of the present application also proposes that the distance between two adjacent pressing flanges is 2-6 cm, and/or the diameter of the guide rod 130 is 1-3 cm, and/or, the adjacent pressing flanges The distance from the guide rod 130 is 1-3 cm. Based on the foregoing explanation of “and/or”, in different embodiments of the present application, a combination of different technical solutions can be used to optimize the fiber spreading and tension control effect of the fiber routing frame 100a.
  • the distance between two pressing flanges can be set to 2cm, 3cm, 4cm, 5cm, or 6cm; the diameter of the guide rod 130 can be set to 1cm, 2cm or 3cm; the adjacent pressing flange and the guide rod The spacing between 130 can be set to 1 cm, 2 cm or 3 cm.
  • the distance between two adjacent pressing flanges is set to 2 cm
  • the diameter of the guide rod is set to 1 cm
  • the distance between adjacent pressing flanges and the guide rod 130 is set to 1 cm.
  • the distance between two adjacent pressing flanges is set to 4 cm
  • the diameter of the guide rod is set to 2 cm
  • the distance between adjacent pressing flanges and the guide rod 130 is set to 2 cm.
  • the distance between two adjacent pressing flanges is set to 6 cm
  • the diameter of the guide rod is set to 3 cm
  • the distance between adjacent pressing flanges and the guide rod 130 is set to 3 cm.
  • the fiber feeding system proposed in this application includes all the technical solutions of all the embodiments of the fiber feeding device 100 described above, it has at least all the effects brought about by the technical solutions of the foregoing embodiments, and will not be repeated here.
  • This embodiment uses a 24K carbon fiber spindle unwinding feeding method to illustrate the feeding process and effects of the fiber feeding system of the present application.
  • 24K carbon fiber is discharged from the spindle, and a 20g weight is suspended on the spindle.
  • the fiber tension fed back by the sensor is 60mN. Since the fiber tension of the remaining fibers is 69 ⁇ 75mN, the height of the adjusting rod 121 is adjusted to be 2mm higher, and the feedback tension of the sensing element is 70mN, which meets the requirements.
  • the fiber tension measured by the three-point dynamometer after the fiber exits the fiber conduit 210 is in the range of 72-80 mN. As shown in Table 2, the fiber length in the final product obtained is measured.
  • the average fiber length before using this method is 1.3mm, and the average fiber length after using this method is 1.5mm, which has a certain increase. .
  • the distribution of fiber length is more concentrated, rather than being distributed for each length interval.
  • Length range, mm Ratio (before use) Ratio (after use) [0,0.5] 18% 12% [0.5,1.0] twenty two% 15% [1.0,1.5] 21.1% 25% [1.5,2.0] 19% 24.4% [2.0,2.5] 13.2% 16% [2.5,3.0] 5% 6% [3.0,5.0] 1% 1.2% [5.0,8.0] 0.7% 0.4%
  • Table 3 is a comparison of the performance of carbon fiber products before and after the fiber feeding device 100 provided in the present application is used. According to the data in Table 3, after using the fiber feeding device 100 of the present application, the tensile performance of the product is improved.
  • Test items Test result (before use) Test result (after use) Tensile strength, Mpa 210 230 Tensile modulus, Gpa 20.1 22.3 Impact strength, KJ/m2 19.6 twenty one
  • the glass fiber roll 400 is fixedly placed in the box 200, and the feeding method is directly unrolled without unwinding the spindle, and specifically describes the feeding process and effects of the fiber feeding device 100 of the present application.
  • the glass fiber roll 400 is placed in a fixed position on the box body 200 and sent out directly without passing the yarn.
  • the fiber width expands from 8 mm to 13 mm.
  • the fiber tension fed back by the sensor is 42mN. Since the fiber tension of the remaining fibers is 30 ⁇ 39mN, the height of the adjusting rod 121 is lowered by 1mm. At this time, the feedback tension of the sensing element is 39mN, which meets the requirements.
  • the fiber tension measured after the fiber exits the fiber conduit 2104 by a three-point dynamometer is in the range of 42-50mN.
  • Table 5 is a comparison of the product performance of glass fibers before and after using the fiber feeding device 100 provided by the present application. According to the content of Table 5, it can be seen that after using the fiber feeding device 100 of the present application, the product performance The tensile properties are improved. Test items Test result (before use) Test result (after use) Tensile strength, Mpa 160 170 Tensile modulus, Gpa 8.6 9.4 Impact strength, KJ/m2 20.1 twenty two

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

L'invention concerne un dispositif et un système d'alimentation en fibres. Le dispositif d'alimentation en fibres est appliqué au système d'alimentation en fibres. Le dispositif d'alimentation en fibres comprend : un support d'acheminement de fibres comportant un côté d'entrée de fil et un côté de sortie de fil, le support d'acheminement de fibres comprenant au moins deux bords convexes de pression, les bords convexes de pression sont agencés séquentiellement dans la direction allant du côté d'entrée de fil au côté de sortie de fil, les orientations respectives de deux bords convexes de pression adjacents sont décalées, et les bords convexes de pression sont conçus pour presser une fibre lorsque la fibre entre dans le support d'acheminement de fibres, de façon à changer la direction d'alimentation des fibres.
PCT/CN2019/106046 2019-04-25 2019-09-17 Dispositif et système d'alimentation en fibres WO2020215594A1 (fr)

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CN201910348610.3 2019-04-25
CN201910348610.3A CN109927206A (zh) 2019-04-25 2019-04-25 纤维喂料装置及纤维喂料系统

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CN109927206A (zh) * 2019-04-25 2019-06-25 深圳市银宝山新科技股份有限公司 纤维喂料装置及纤维喂料系统

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WO2004080698A1 (fr) * 2003-03-06 2004-09-23 Ticona Celstran, Inc. Procede de fabrication de materiaux composites thermoplastiques a fibres longues au moyen d'un fil hybride ou melange
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