CN116021804A - Fiber impregnating device - Google Patents
Fiber impregnating device Download PDFInfo
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- CN116021804A CN116021804A CN202211649003.9A CN202211649003A CN116021804A CN 116021804 A CN116021804 A CN 116021804A CN 202211649003 A CN202211649003 A CN 202211649003A CN 116021804 A CN116021804 A CN 116021804A
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Abstract
The application discloses a fiber impregnation device for producing continuous fiber reinforced composite tows, which comprises an impregnation die and a beam splitting die. The impregnation die is internally provided with an impregnation runner extending along the length direction of the fiber impregnation device. The beam splitting mould is arranged at the downstream of the dipping mould and connected with the dipping mould, a plurality of through hole flow passages extending along the length direction are arranged in the beam splitting mould, and the through hole flow passages are communicated with the dipping flow passages. The plurality of through hole runners can correspond to the plurality of continuous fiber bundles, and the impregnation die is used for spreading and presoaking the plurality of continuous fiber bundles. According to the fiber dipping device, the continuous fiber bundles are spread in the dipping flow channel and are dipped and coated with the molten resin, the beam splitting mold plays a role in guiding the continuous fibers, so that the continuous fibers can be orderly and controllably operated in the fiber dipping device, the continuous fiber dipping effect is uniform, and the continuous fiber reinforced composite material tows with good surface state and strong bending resistance and fatigue resistance are obtained.
Description
Technical Field
The application relates to the technical field of composite materials, in particular to a fiber impregnation device.
Background
At present, continuous fiber reinforced thermoplastic composite materials are mostly manufactured by adopting continuous fiber reinforced prepreg sheets, and laminated plates are compounded through multi-angle layering and hot pressing of the sheets. In the prior art, the continuous fibers are impregnated with resin by adopting an impregnation die, the operation order of the continuous fibers in the impregnation die is not controlled, so that the impregnation effect of the continuous fibers is not uniform, and the distribution of the continuous fibers in the resin is also not uniform during resin extrusion. The impregnation effect of the continuous fibers in the resin directly affects the surface morphology of the sheet, and poor impregnation effect can lead to rough surface or chromatic aberration of the sheet product, and affects the bending resistance and fatigue resistance of the sheet product.
Accordingly, there is a need for a fiber impregnation device to at least partially solve the above problems.
Disclosure of Invention
In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the present application is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter.
To at least partially solve the above problems, the present application provides a fiber impregnation device for producing a continuous fiber reinforced composite tow, the fiber impregnation device comprising:
an impregnation die, wherein an impregnation runner extending along the length direction of the fiber impregnation device is arranged in the impregnation die;
the beam splitting mould is arranged at the downstream of the dipping mould and is connected with the dipping mould, a plurality of through hole flow passages extending along the length direction are arranged in the beam splitting mould, and the through hole flow passages are communicated with the dipping flow passages;
the through hole runners can correspond to a plurality of continuous fiber bundles, and the impregnation die is used for spreading and presoaking the continuous fiber bundles.
Optionally, the plurality of through-hole runners are uniformly arranged along a width direction of the fiber impregnation device.
Optionally, the through-hole flow channel comprises a first flow channel and a second flow channel;
the beam splitting mold includes:
the upper surface of the lower separation die is provided with the first runner; and
the upper separation die is connected to the upper side of the lower separation die, and the second runner is arranged on the lower surface of the upper separation die;
wherein the first flow passages and the second flow passages are alternately arranged in the width direction.
Optionally, the cross-sectional shape of the first flow channel is the same as the cross-sectional shape of the second flow channel; or alternatively
The first flow passage has a cross-sectional shape that is different from a cross-sectional shape of the second flow passage.
Optionally, the cross-sectional shape of the first flow channel is the same as the cross-sectional shape of the second flow channel; or alternatively
The first flow passage has a cross-sectional shape that is different from a cross-sectional shape of the second flow passage.
Optionally, the impregnation die includes:
the lower module is arranged on the lower side of the lower module,
the upper module is positioned on the upper side of the lower module and connected with the lower module;
the dipping flow channel is formed between the lower module and the upper module and comprises a wave-shaped flow channel.
Optionally, the wave-shaped flow channel comprises a crest portion and a trough portion, and a height difference between a bottom end of the crest portion and a top end of the trough portion is greater than or equal to a dimension of the wave-shaped flow channel in a height direction of the fiber impregnation device.
Optionally, the wave-shaped flow channel is configured in an arc shape or a zigzag shape along the length direction.
Optionally, the fiber impregnation device further comprises a lower die plate and an upper die plate, the lower die plate is connected to the lower die plate, the upper die plate is connected to the upper die plate, the lower partition die is connected to the lower die plate, and the upper partition die is connected to the upper die plate.
Optionally, the fiber impregnating device further comprises a die head, the die head is arranged at the downstream of the beam splitting die and connected with the beam splitting die, the die head is provided with a plurality of die holes, and the plurality of die holes are arranged in one-to-one correspondence with the through hole runners, so that the impregnated multi-strand continuous fiber bundles flow out of the die head to form the continuous fiber reinforced composite fiber bundles.
Optionally, the shape of the plurality of die holes is the same.
According to the fiber dipping device, the continuous fiber bundles are spread in the dipping flow channel and are dipped and coated with the molten resin, and the beam splitting mold plays a role in guiding the continuous fibers, so that the continuous fibers can be orderly and controllably operated in the fiber dipping device, the continuous fiber dipping effect is uniform, and the continuous fiber reinforced composite material tows with good surface state and strong bending resistance and fatigue resistance are obtained.
Drawings
The following drawings of the present application are included to provide an understanding of the present application as part of the present application. The drawings illustrate embodiments of the present application and their description to explain the principles of the present application.
In the accompanying drawings:
FIG. 1 is a schematic cross-sectional view in the length direction of a fiber impregnation device according to a first preferred embodiment of the present application;
FIG. 2 is a schematic cross-sectional view along the length of a fiber impregnation device according to a second preferred embodiment of the application;
fig. 3 is a schematic cross-sectional view of a beam splitting mold in a width direction according to a first preferred embodiment of the present application; and
fig. 4 is a schematic cross-sectional view of a beam splitting mold in a width direction according to a second preferred embodiment of the present application.
Reference numerals illustrate:
100/200: fiber impregnating device
110: impregnating mold
111: dipping flow channel
112/212: lower module
113/213: upper module
114/214: wave-shaped runner
120/220: beam splitting mould
121: through-hole runner
122: lower partition die
123: upper separation die
124/224: first flow channel
125/225: second flow passage
130: die head
140: lower template
150: upper template
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application may be practiced without one or more of these details. In other instances, some features well known in the art have not been described in order to avoid obscuring the present application.
For a thorough understanding of the present application, a detailed description will be set forth in the following description. It should be appreciated that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art. It will be apparent that embodiments of the present application may be practiced without limitation to the specific details that are familiar to those skilled in the art. Preferred embodiments of the present application are described in detail below, however, the present application may have other implementations in addition to these detailed descriptions.
It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present application. As used herein, the singular is intended to include the plural unless the context clearly indicates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Ordinal words such as "first" and "second" recited in this application are merely identifying and do not have any other meaning, e.g., a particular order, etc. Also, for example, the term "first component" does not itself connote the presence of "second component" and the term "second component" does not itself connote the presence of "first component". It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like are used herein for illustrative purposes only and are not limiting.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings.
First preferred embodiment
Fig. 1 and 3 show a fiber impregnation device 100 according to a first preferred embodiment of the present application for producing continuous fiber reinforced composite tows, the fiber impregnation device 100 comprising an impregnation die 110 and a splitting die 120. The impregnation die 110 has an impregnation channel 111 extending in the longitudinal direction of the fiber impregnation device 100. The beam splitting mold 120 is disposed downstream of the dipping mold 110 and connected to the dipping mold 110, and the beam splitting mold 120 has a plurality of through-hole runners 121 extending in a longitudinal direction therein, and the through-hole runners 121 communicate with the dipping runners 111. The plurality of through-hole runners 121 can correspond to a plurality of continuous fiber bundles, and the impregnation die 110 is used for spreading and pre-impregnating the plurality of continuous fiber bundles.
According to the fiber dipping device, the continuous fiber bundles are spread in the dipping flow channel and are dipped and coated with the molten resin, and the beam splitting mold plays a role in guiding the continuous fibers, so that the continuous fibers can be orderly and controllably operated in the fiber dipping device, the continuous fiber dipping effect is uniform, and the continuous fiber reinforced composite material tows with good surface state and strong bending resistance and fatigue resistance are obtained.
As shown in fig. 1, the impregnation die 110 includes a lower module 112 and an upper module 113, the upper module 113 being located at an upper side of the lower module 112 and being connected to the lower module 112, for example, the upper module 113 being detachably connected to the lower module 112 (not shown). Thus, the upper module 113 can be conveniently opened when necessary. An impregnation flow channel 111 is formed between the lower module 112 and the upper module 113, and the impregnation flow channel 111 is used for sufficiently impregnating the continuous fiber bundles after the continuous fiber bundles are mixed with the resin. The dip flow channel 111 includes a wave-shaped flow channel 114. The continuous fiber bundles are unfolded into single-strand fiber bundles in the wave-shaped runner 114, so that the dipping and cladding effects of the molten resin are improved, and each continuous fiber bundle can be fully combined with the resin material. The wave-shaped flow channel 114 includes wave crest portions and wave trough portions, the wave-shaped flow channel 114 is configured in an arc shape in the length direction, and the wave-shaped flow channel 114 has at least 1 wave crest portion and 1 wave trough portion, for example, 2 wave crest portions and 3 wave trough portions are provided in the wave-shaped flow channel 114 shown in fig. 1. Preferably, the height difference between the bottom ends of the wave crest portions and the top ends of the wave trough portions is greater than or equal to the dimension of the wave-shaped flow channel 114 in the height direction of the fiber impregnation device 100, thereby more facilitating the spreading of the continuous fiber bundle into a single fiber bundle in the wave-shaped flow channel 114.
It should be noted that the fiber impregnation device is preferably placed horizontally during operation. The term "longitudinal direction" as used herein refers to the longitudinal direction of the fiber impregnation device, i.e. the main direction of movement of the continuous fibers and the resin fluid during operation of the fiber impregnation device. "widthwise" refers to the widthwise direction of the fiber infusion device, i.e., the widthwise direction of the continuous fibers and resin fluid in the infusion flow channels during operation of the fiber infusion device. The "height direction" refers to the height direction of the fiber impregnation device, i.e. the thickness direction of the continuous fibers and the resin fluid input during operation of the fiber impregnation device, which is perpendicular to both the "length direction" and the "width direction", in other words, it can also be understood as the vertical direction.
As shown in fig. 1 and 3, the beam splitting mold 120 includes a plurality of through-hole runners 121, and the plurality of through-hole runners 121 are uniformly arranged in the width direction of the fiber impregnation device 100. The individual fiber bundles flow into the plurality of through-hole runners 121 of the splitting mold 120 in a one-to-one correspondence, i.e., each fiber bundle flows into a different through-hole runner 121. Thus, the plurality of through-hole runners 121 in the splitting mold 120 plays a guiding role, and the single fiber bundles are independently impregnated and moved forward, so that the continuous fiber impregnation effect is more uniform. In an alternative embodiment, a plurality of fiber bundles may be first inserted into each through-hole flow passage 121, respectively, thereby achieving the one-to-one correspondence.
Preferably, the plurality of through-hole flow channels 121 in the beam splitting mold 120 are identical in size in the width direction, and further preferably, the plurality of through-hole flow channels 121 are identical in cross-sectional shape. The through-hole flow passage 121 may include a first flow passage 124 and a second flow passage 125. The beam splitting mold 120 includes a lower separation mold 122 and an upper separation mold 123, the upper surface of the lower separation mold 122 is provided with a first flow passage 124, and the lower surface of the upper separation mold 123 is provided with a second flow passage 125. The upper separation mold 123 is connected to the upper side of the lower separation mold 122, for example, the upper separation mold 123 is detachably connected to the lower separation mold 122 (not shown). Thereby, the upper partition mold 123 can be opened conveniently when necessary. Preferably, the first flow channels 124 and the second flow channels 125 are alternately arranged in the width direction. The cross-sectional shape of the first flow passage 124 may be the same as or different from the cross-sectional shape of the second flow passage 125. It is further preferred that the cross-sectional shape of the first flow passage 124 is the same as the cross-sectional shape of the second flow passage 125. In the beam splitting mold 120 shown in fig. 3, the first flow channels 124 and the second flow channels 125 are alternately arranged, and have the same cross-sectional shape, and are rectangular.
With continued reference to fig. 1, the fiber dipping apparatus 100 of the present application further comprises a lower die plate 140, an upper die plate 150, and a die head 130, wherein the lower die plate 112 is connected to the lower die plate 140, the upper die plate 113 is connected to the upper die plate 150, the lower divider die 122 is connected to the lower die plate 140, and the upper divider die 123 is connected to the upper die plate 150. The die head 130 is disposed downstream of the beam splitting die 120 and connected to the beam splitting die 120, and the die head 130 is provided with a plurality of die holes (not shown) disposed in one-to-one correspondence with the plurality of through-hole runners 121, so that the single fiber bundles flowing out of each through-hole runner 121 flow into the die holes in one-to-one correspondence, and form continuous fiber reinforced composite fiber bundles after flowing out of the die head. It will be appreciated that the continuous fiber reinforced composite tows formed may be used directly to produce impregnated sheet products or may be flexibly woven in any manner, for example, to be processed into any desired morphology/structure for subsequent processing.
Second preferred embodiment
Fig. 2 and 4 show a fiber impregnation device 200 according to a second preferred embodiment of the present application. In the second preferred embodiment, the fiber impregnating device 200 is different from the first preferred embodiment in that the wave-shaped flow channel 214 is constructed in a zigzag shape in the length direction.
The wave-shaped flow channel 214 is formed between the upper module 213 and the lower module 212. The upper end surface of the lower module 212 is provided with a first boss and a first groove, wherein the first groove is arranged between two adjacent first bosses, and the first boss is arranged between two adjacent first grooves. The lower end surface of the upper module 213 is provided with a second boss and a second groove, the second groove is arranged between two adjacent second bosses, and the second boss is arranged between two adjacent second grooves. Wherein the first grooves and the second bosses are adaptively arranged to form wave trough portions, and the second grooves and the first bosses are adaptively arranged to form wave crest portions, it will be understood that the wave-shaped flow passage 214 is formed by combining all the slit passages between the first grooves and the second bosses and all the slit passages between the second grooves and the first bosses. It will be appreciated that the ends of all the bosses and recesses are rounded. The wave form runner 214 includes peaks and valleys, and the wave form runner 214 has at least 1 valley, for example, 1 peak and 2 valleys are present in the wave form runner 214 shown in fig. 2.
In the beam splitting mold 220 shown in fig. 4, the first flow channels 224 and the second flow channels 225 are alternately arranged, and the cross-sectional shapes are the same, and each is semicircular. The remaining non-illustrated portions of the second preferred embodiment are referred to in the description of the first preferred embodiment and the accompanying drawings, which will not be described and/or illustrated in detail for the sake of brevity.
In an embodiment not shown, the impregnation flow path of the fiber impregnation device may be the same as in the first preferred embodiment. The difference may be that in the beam splitting mold, the first flow channels and the second flow channels are alternately arranged, and the cross-sectional shapes are the same and are all semicircular. Alternatively, the impregnation flow path of the fiber impregnation device may be the same as that of the second preferred embodiment. The difference may be that in the beam splitting mold, the first flow channels and the second flow channels are alternately arranged, and the cross-sectional shapes are the same and are rectangular.
Unless defined otherwise, 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 herein is for the purpose of describing particular implementations only and is not intended to be limiting of the present application. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.
While the application has been described by way of example and with reference to the above embodiments, it is to be understood that the above embodiments are for illustration and description only and that the application is not limited to the above embodiments, and that many variations and modifications may be made in accordance with the teachings of the application, which variations and modifications are within the scope of the application as claimed.
Claims (10)
1. A fiber impregnation device for producing a continuous fiber reinforced composite tow, the fiber impregnation device comprising:
an impregnation die, wherein an impregnation runner extending along the length direction of the fiber impregnation device is arranged in the impregnation die;
the beam splitting mould is arranged at the downstream of the dipping mould and is connected with the dipping mould, a plurality of through hole flow passages extending along the length direction are arranged in the beam splitting mould, and the through hole flow passages are communicated with the dipping flow passages;
the through hole runners can correspond to a plurality of continuous fiber bundles, and the impregnation die is used for spreading and presoaking the continuous fiber bundles.
2. The fiber impregnation device of claim 1, wherein the plurality of through-hole flow channels are uniformly arranged along a width direction of the fiber impregnation device.
3. A fiber impregnation device according to claim 2, wherein,
the through hole runner comprises a first runner and a second runner;
the beam splitting mold includes:
the upper surface of the lower separation die is provided with the first runner; and
the upper separation die is connected to the upper side of the lower separation die, and the second runner is arranged on the lower surface of the upper separation die;
wherein the first flow passages and the second flow passages are alternately arranged in the width direction.
4. A fiber impregnation device according to claim 3, wherein,
the cross-sectional shape of the first flow channel is the same as the cross-sectional shape of the second flow channel; or alternatively
The first flow passage has a cross-sectional shape that is different from a cross-sectional shape of the second flow passage.
5. A fiber impregnation device according to claim 3, wherein the impregnation die comprises:
the lower module is arranged on the lower side of the lower module,
the upper module is positioned on the upper side of the lower module and connected with the lower module;
the dipping flow channel is formed between the lower module and the upper module and comprises a wave-shaped flow channel.
6. The fiber impregnation device of claim 5, wherein the wave-shaped flow channel comprises a peak portion and a trough portion, and a height difference between a bottom end of the peak portion and a top end of the trough portion is greater than or equal to a dimension of the wave-shaped flow channel in a height direction of the fiber impregnation device.
7. The fiber impregnation device of claim 5, wherein the wave-shaped flow channel is configured in an arcuate or a zigzag shape along the length direction.
8. The fiber infusion device of claim 5, further comprising a lower die plate and an upper die plate, the lower die plate being connected to the lower die plate, the upper die plate being connected to the upper die plate, the lower divider die being connected to the lower die plate, the upper divider die being connected to the upper die plate.
9. The fiber impregnation device of any of claims 1-8, further comprising a die disposed downstream of and connected to the splitting die, the die being provided with a plurality of die holes disposed in one-to-one correspondence with the plurality of through-hole flow passages such that the impregnated plurality of continuous fiber bundles exit the die to form the continuous fiber reinforced composite tow.
10. The fiber impregnation device of claim 9, wherein the shape of the plurality of die holes is the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211649003.9A CN116021804A (en) | 2022-12-20 | 2022-12-20 | Fiber impregnating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211649003.9A CN116021804A (en) | 2022-12-20 | 2022-12-20 | Fiber impregnating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116021804A true CN116021804A (en) | 2023-04-28 |
Family
ID=86090448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211649003.9A Pending CN116021804A (en) | 2022-12-20 | 2022-12-20 | Fiber impregnating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116021804A (en) |
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2022
- 2022-12-20 CN CN202211649003.9A patent/CN116021804A/en active Pending
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