CN114474784B - Method and device for preparing micron-sized regularly-arranged fiber tows - Google Patents
Method and device for preparing micron-sized regularly-arranged fiber tows Download PDFInfo
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- CN114474784B CN114474784B CN202210062439.1A CN202210062439A CN114474784B CN 114474784 B CN114474784 B CN 114474784B CN 202210062439 A CN202210062439 A CN 202210062439A CN 114474784 B CN114474784 B CN 114474784B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
- B29C70/382—Automated fiber placement [AFP]
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- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses a method and a device for preparing micron-sized regularly arranged fiber tows. The method comprises the following steps: s1, extracting single fiber yarns from dry fiber yarns, and bonding mass blocks at two ends of the single fiber yarns; s2, placing the single fiber yarn bonded with the mass block on a single fiber fixing device; s3, operating the horizontal moving platform to move the single-layer fiber fixing device to a proper position; s4, operating the vertical moving platform to drive the single fiber fixing device to move downwards, and fixing the fiber yarns on the single fiber fixing device on the single-layer fiber fixing device; s5, repeating the steps S1-S4 until the fiber filaments of the single-layer fiber fixing device are uniformly arranged. The invention is applicable to all filament fibers, can precisely control the fiber position in a single ply of the fiber reinforced composite material, and simultaneously reduces the thickness of the single ply of the fiber reinforced composite material.
Description
Technical Field
The invention relates to the technical field of mechanical engineering, in particular to a method and a device for preparing micron-sized regularly arranged fiber tows.
Background
The fiber reinforced composite material is widely applied to tip technologies such as aerospace, aircraft structures, vehicles, wind driven generator blades and the like by virtue of the excellent strength and rigidity and the light weight of the fiber reinforced composite material. However, because common fiber diameters are between a few microns and tens of microns, current composite fabrication processes fail to control the spatial location distribution of fibers during fabrication such that the composite structure fiber volume fraction is not uniform in the structure and there is fiber misalignment, often containing lipid-rich regions and fiber clusters. Such an indefinite fiber distribution pair means dispersion of the composite properties, reducing the macroscopic mechanical properties of the composite, resulting in over-design of the component.
For the practice of the micro-uniformity of the composite material, a fiber expansion method is mainly adopted to uniformly expand fiber bundles, but the fiber bundle-based processing technology does not homogenize the spatial distribution of fibers, so that the mechanical property of the micro-structure of the composite material prepared on the basis of the fiber expansion method is still relatively large in dispersity. There is currently no method and apparatus available for precisely controlling the arrangement of individual filaments of a composite material.
Disclosure of Invention
The invention aims to provide a preparation method and a preparation device for micron-sized regularly arranged fiber tows, which overcome the defects in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the invention provides a preparation method of micron-sized regularly arranged fiber tows, which comprises the following steps:
s1, extracting single fiber from dry fiber yarns, and bonding mass blocks at two ends of the single fiber yarns;
s2, placing the single fiber yarn bonded with the mass block on a single fiber fixing device;
s3, operating the horizontal moving platform to move the single-layer fiber fixing device to a proper position;
s4, operating the vertical moving platform to drive the single fiber fixing device to move downwards, and fixing the fiber yarns on the single fiber fixing device on the single-layer fiber fixing device;
s5, repeating the steps S1-S4 until the fiber filaments of the single-layer fiber fixing device are uniformly arranged.
The invention also provides a device for preparing the micron-sized regularly arranged fiber tows, which comprises a base, a horizontal moving platform, a horizontal mounting table, an inner layer horizontal moving frame, a vertical lifting plate, a vertical moving platform, a vertical moving beam and a horizontal mounting plate, wherein the horizontal mounting plate is mounted on the horizontal mounting table, the horizontal mounting table is mounted on the horizontal moving platform, the horizontal moving frame is symmetrically mounted on the horizontal mounting table, single-layer fibers are mounted on the inner layer horizontal moving frame and are mounted on the inner side of the vertical moving platform, the vertical moving beam is mounted on the outer side of the vertical lifting plate, and a single fiber fixing device is further arranged on the vertical moving beam.
Further, inlayer horizontal migration frame includes two fixed plates, and two fixed plates symmetry are located on the horizontal mount platform, all are equipped with individual layer fibre fixing device on every fixed plate, vertical movable beam is the U-shaped movable beam, and the surface at vertical lifter plate is installed to the bottom of this U-shaped movable beam, the both ends of U-shaped movable beam all are equipped with single fibre fixing device, the both ends inboard width of U-shaped movable beam is greater than two the width between the fixed plate outside.
Further, the single-layer fiber fixing device is a metal film fiber groove, a nonmetal film fiber groove, an adhesive plate or a grooved plate.
Further, the single fiber fixing device is a metal or nonmetal film single or parallel fiber groove.
Further, an outer layer moving frame positioned at the outer side of the inner layer horizontal moving frame is further arranged on the horizontal mounting table, and the top of the outer layer moving frame is an outer layer fixing reinforcing plate with an inclined structure.
Further, the vertical moving mechanism comprises an advancing motor and a screw rod, the screw rod is arranged on the outer side of the vertical moving platform, the vertical lifting plate is arranged on the screw rod through a screw rod nut, and the advancing motor is arranged on the top of the vertical moving platform and is connected with the upper end of the screw rod.
Compared with the prior art, the invention has the advantages that: the invention is applicable to all filament fibers, can precisely control the fiber position in a single ply of the fiber reinforced composite material, and simultaneously reduces the thickness of the single ply of the fiber reinforced composite material.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of the structure of the device of the present invention.
Fig. 2 is a schematic representation of individual fibers in the apparatus of the present invention.
Figure 3 is a schematic illustration of the structure of a single fiber channel in the apparatus of the present invention.
FIG. 4 is a plot of the microscopic effects of the fiber lay-up of the device of the present invention.
Fig. 5 is a prior art fiber layup fine-scale comparison.
In the figure: the device comprises a base 1, a horizontal moving platform 2, a horizontal mounting table 3, an inner layer horizontal moving frame 4, a single-layer fiber fixing device 5, a single fiber fixing device 6, a vertical lifting plate 7, an advancing motor 8, a vertical moving platform 9, a screw rod 10, a vertical moving beam 11, an outer layer fixing reinforcing plate 12, an outer layer moving frame 13 and a horizontal mounting plate 14.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
Referring to fig. 1 and 2, the embodiment discloses a micron-sized regular fiber tow preparation device, which comprises a base 1, a horizontal moving platform 2, a horizontal mounting table 3, an inner layer horizontal moving frame 4, a vertical lifting plate 7, a vertical moving platform 9, a vertical moving beam 11 and a horizontal mounting plate 14, wherein the horizontal mounting plate 14 is mounted on the horizontal mounting table 3, the horizontal mounting table 3 is mounted on the horizontal moving platform 2, the horizontal moving frame 4 is symmetrically mounted on the horizontal mounting table 3, a single-layer fiber fixing device 5 is mounted on the inner layer horizontal moving frame 4, the vertical moving platform 9 is mounted on the base 1 and is positioned at the rear end of the horizontal moving platform 2, the vertical lifting plate 7 is mounted on the inner side of the vertical moving platform 9, the vertical moving beam 11 is mounted on the outer side of the vertical lifting plate 7, and a single fiber fixing device 6 is further arranged on the vertical moving beam 11.
In this embodiment, inlayer horizontal migration frame 4 includes two fixed plates, on horizontal mount platform 3 was located to two fixed plate symmetries, all be equipped with individual layer fiber fixing device 5 on every fixed plate, vertical movable beam 11 is the U-shaped movable beam, the surface at vertical lifter plate 7 is installed to the bottom of this U-shaped movable beam, the both ends of U-shaped movable beam all are equipped with single fiber fixing device 6, the width between the both ends inboard width of U-shaped movable beam is greater than two fixed plate outsides, be convenient for when U-shaped movable beam moves down, single fiber silk that is fixed on the single fiber fixing device 6 of U-shaped movable beam falls into smoothly and spreads on individual layer fiber fixing device 5.
In this embodiment, the travel of the horizontal moving platform 2 is ±75mm, the precision is ±0.5 μm, the repetition precision is ±0.055 μm, and the control is performed by using a controller with feedback adjustment; the surface roughness of the single-layer fiber fixing device 5 is less than +/-0.1 mu m. The stroke of the vertical moving platform 9 is +/-150 mm, the precision is +/-0.1 mu m, the repeated precision is +/-0.05 mu m, and the control is performed by a controller with feedback regulation; the single fiber fixing device 6 adopts a V-shaped design, and the precision is +/-1 mu m.
In this embodiment, the shape of the mass may be varied, the size and weight may be designed according to the strength of the fibers, and the fibers may be glued to the mass by dispensing or by various means.
In this embodiment, the travel of the horizontal moving platform 2 may be enlarged or reduced, and the horizontal moving platform may be fixed on the base 1 in various manners, or may be fixed on other platforms according to space permission.
In this embodiment, the stroke of the vertical moving platform 9 may be enlarged or reduced; the fixing mode can be fixed on the base in various modes according to space permission, and can also be fixed on other platforms.
In this embodiment, the single-layer fiber fixing device 5 is a metal film fiber groove, a nonmetal film fiber groove, an adhesive plate or a grooved plate.
In this embodiment, the single fiber fixing device 6 is a single or parallel fiber groove of metal or nonmetal film, and its shape can be V-shaped or other shape or device capable of keeping the fiber level not moving.
In this embodiment, the horizontal mounting table 3 is further provided with an outer layer moving frame 13 located outside the inner layer horizontal moving frame 4, and the top of the outer layer moving frame 13 is an outer layer fixing reinforcing plate 12 with an inclined structure.
In this embodiment, the vertical movement mechanism includes an advancing motor 8 and a screw rod 10, the screw rod 10 is mounted on the outer side of the vertical movement platform 9, the vertical lifting plate 7 is mounted on the screw rod 10 through a screw rod nut, and the advancing motor 8 is mounted on the top of the vertical movement platform 9 and is connected with the upper end of the screw rod 10.
The invention also provides a preparation method of the micron-sized regularly arranged fiber tows, which comprises the following steps:
step S1, extracting single fiber from fiber dry yarn, as shown in FIG. 2, manually extracting single fiber from fiber dry yarn, bonding mass blocks at two ends of the single fiber, wherein each mass block has a consistent size, the gravity is set in the fiber strength range according to the requirement, and bonding the fiber on the mass block by adopting a glue dripping mode.
And S2, placing the single fiber wire bonded with the mass block on a single fiber fixing device, such as a V-shaped groove.
And S3, operating the horizontal moving platform 2 to move the single-layer fiber fixing device 5 to a proper position, and then starting to lay the fiber.
And S4, operating the vertical moving platform to drive the single fiber fixing device 6 to move downwards, and fixing the fiber yarns on the single fiber fixing device 6 on the single-layer fiber fixing device 5, as shown in fig. 3.
Step S5, repeating the steps S1-S4 until the fiber filaments of the single-layer fiber fixing device are uniformly arranged, so that fiber layering for precisely controlling the arrangement of single fiber filaments in the composite material can be realized, the effect is shown in figure 4, and the automatic fiber layering technology of the invention greatly improves the fiber uniformity compared with the existing fiber expanding technology (such as figure 5); the pitch of the fiber surface can be accurately positioned to 1 μm.
The invention can realize the accurate positioning of the fiber wires, and the distance between the fiber wires is controllable; the thickness of the fiber dry yarn layer is one fiber diameter, so that the thickness of the dry yarn layer is greatly reduced; the invention has simple structure and is easy to process and manufacture; the invention adopts an automatic operation mode, has simple and convenient operation process, and only needs to carry out simple parameter setting on the software.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, the patentees may make various modifications or alterations within the scope of the appended claims, and are intended to be within the scope of the invention as described in the claims.
Claims (7)
1. The preparation method of the micron-sized regularly arranged fiber tows is characterized by comprising the following steps of:
s1, extracting single fiber yarns from dry fiber yarns, and bonding mass blocks at two ends of the single fiber yarns;
s2, placing the single fiber yarn bonded with the mass block on a single fiber fixing device;
s3, operating the horizontal moving platform to move the single-layer fiber fixing device to a proper position;
s4, operating the vertical moving platform to drive the single fiber fixing device to move downwards, and fixing the fiber yarns on the single fiber fixing device on the single-layer fiber fixing device;
s5, repeating the steps S1-S4 until the fiber filaments of the single-layer fiber fixing device are uniformly arranged.
2. The device for the preparation method of the micron-sized regularly arranged fiber tows according to claim 1, which is characterized by comprising a base, a horizontal moving platform, a horizontal mounting table, an inner layer horizontal moving frame, a vertical lifting plate, a vertical moving platform, a vertical moving beam and a horizontal mounting plate, wherein the horizontal mounting plate is mounted on the horizontal mounting table, the horizontal mounting table is mounted on the horizontal moving platform, the inner layer horizontal moving frame is symmetrically mounted on the horizontal mounting table, a single-layer fiber fixing device is mounted on the inner layer horizontal moving frame, the vertical moving platform is mounted on the base and positioned at the rear end of the horizontal moving platform, the vertical lifting plate is mounted on the inner side of the vertical moving platform, the vertical moving beam is mounted on the outer side of the vertical lifting plate, and a single fiber fixing device is further arranged on the vertical moving beam.
3. The device according to claim 2, wherein the inner layer horizontal moving frame comprises two fixing plates, the two fixing plates are symmetrically arranged on the horizontal installation table, a single-layer fiber fixing device is arranged on each fixing plate, the vertical moving beam is a U-shaped moving beam, the bottom end of the U-shaped moving beam is arranged on the outer surface of the vertical lifting plate, single fiber fixing devices are arranged at two ends of the U-shaped moving beam, and the inner width of the two ends of the U-shaped moving beam is larger than the width between the outer sides of the two fixing plates.
4. A device according to claim 3, wherein the single layer fibre fixation means is a metal film fibre channel, a non-metal film fibre channel, an adhesive plate or a slotted plate.
5. A device according to claim 3, wherein the single fiber securing means is a metallic or non-metallic film single or side-by-side fiber channel.
6. The device according to claim 3, wherein the horizontal mounting table is further provided with an outer layer moving frame positioned outside the inner layer horizontal moving frame, and the top of the outer layer moving frame is an outer layer fixing reinforcing plate with an inclined structure.
7. The apparatus of claim 3, further comprising a vertical movement mechanism comprising a progressive motor and a screw mounted on an outer side of the vertical movement platform, the vertical lifting plate being mounted on the screw by a screw nut, the progressive motor being mounted on a top of the vertical movement platform and connected with an upper end of the screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210062439.1A CN114474784B (en) | 2022-01-19 | 2022-01-19 | Method and device for preparing micron-sized regularly-arranged fiber tows |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210062439.1A CN114474784B (en) | 2022-01-19 | 2022-01-19 | Method and device for preparing micron-sized regularly-arranged fiber tows |
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| Publication Number | Publication Date |
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| CN114474784A CN114474784A (en) | 2022-05-13 |
| CN114474784B true CN114474784B (en) | 2023-07-18 |
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| CN202210062439.1A Active CN114474784B (en) | 2022-01-19 | 2022-01-19 | Method and device for preparing micron-sized regularly-arranged fiber tows |
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2022
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| CN1587965A (en) * | 2004-08-10 | 2005-03-02 | 东华大学 | Measuringm ethod and device for fiber material transverse compression property |
| CN102301050A (en) * | 2009-02-02 | 2011-12-28 | 东丽株式会社 | Process and apparatus for producing reinforcing-fiber strip base having circular-arc part, and multilayer structure, preform, and fiber-reinforced resin composite material each comprising or produced using the base |
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| CN114474784A (en) | 2022-05-13 |
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