CN111923447A - Fiber thermosetting resin unidirectional tape pre-dipping machine and production process thereof - Google Patents
Fiber thermosetting resin unidirectional tape pre-dipping machine and production process thereof Download PDFInfo
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- CN111923447A CN111923447A CN202011068783.9A CN202011068783A CN111923447A CN 111923447 A CN111923447 A CN 111923447A CN 202011068783 A CN202011068783 A CN 202011068783A CN 111923447 A CN111923447 A CN 111923447A
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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
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
Abstract
The invention provides a fiber thermosetting resin one-way belt pre-dipping machine which comprises a fiber dividing device arranged at the yarn outlet end of a fiber unreeling device, wherein a resin impregnation device is arranged at the yarn outlet end of the fiber dividing device, a resin extrusion device is arranged at the yarn outlet end of the resin impregnation device, the resin impregnation device comprises a sunken impregnation tank, a fiber guide shaft is arranged at one end, into which fibers enter, of the outer side of the impregnation tank, a resin transfer wheel is arranged in the impregnation tank, a scraper is arranged on one side, out of which the fibers are pulled, of the resin transfer wheel, and the rotating direction of the resin transfer wheel is opposite to the advancing direction of the fibers; the prepreg in the field of composite materials is a semi-finished product material, the quality of a finished product to be manufactured requires that the resin content is constant, and the degree of impregnation of fibers by resin is sufficient; in order to meet the requirement of constant resin content, the thermosetting resin prepreg tape produced by the invention can be stored at low temperature, can be transported for a long distance, does not pollute the environment and provides convenience for reasonable use.
Description
Technical Field
The invention relates to a thermosetting narrow-band composite material presoaking machine.
In particular to a fiber thermosetting resin unidirectional tape pre-dipping machine and a production process thereof.
Background
In 1998, thermosetting epoxy resin prepreg equipment and prepreg prepared by the equipment are mature in technology, 80% of the annual output of thermosetting epoxy resin prepreg cloth with the width of 1000mm is used for sports and leisure products, the equipment enters a 21 st century and provides a wider market for carbon fiber composite materials along with the development of new technical products of high technology, a hydrogen gas storage tank needs to be arranged on an automobile powered by new energy, and the production of the hydrogen gas storage tank needs to be formed by winding continuous carbon fiber epoxy resin unidirectional tape prepreg on a winding machine.
At present, phenolic resin carbon fiber unidirectional tape prepreg can be seen, the preparation method is simple, phenolic resin is in a mixed solution, a liquid similar to alcohol is placed in a metal tank, a fiber penetrates through the phenolic solution, the carbon fiber impregnated with the phenolic resin is then subjected to a winding step, the wet-percolated unidirectional tape scatters redundant phenolic resin on the ground to pollute the surrounding working environment, the resin content in the unidirectional tape cannot be strictly controlled, and the unidirectional tape is not suitable for storage and must be immediately wound into a product.
Disclosure of Invention
The invention aims to overcome the defects of the traditional technology and provides a fiber thermosetting resin unidirectional tape pre-dipping machine and a production process thereof.
The aim of the invention is achieved by the following technical measures: the utility model provides a fibre thermosetting resin unilateralism area preimpregnation machine, divides the silk device including setting up the fibre that goes out the yarn end at fibre unwinding device, the yarn end that goes out that the fibre divides the silk device is equipped with resin impregnation device, resin impregnation device goes out the yarn end and is equipped with resin extrusion device, its characterized in that: the resin impregnation device comprises a sunken impregnation tank, a fiber guide shaft is arranged at one end, into which fibers enter, of the outer side of the impregnation tank, a resin transfer wheel is arranged in the impregnation tank, a scraper is arranged on one side, out of which the fibers are pulled, of the resin transfer wheel, and the rotating direction of the resin transfer wheel is opposite to the advancing direction of the fibers.
As an improvement, the resin extrusion device comprises an upper extrusion roller fixedly mounted and a lower extrusion roller positioned below the upper extrusion roller, the lower extrusion roller can be adjusted up and down, the upper extrusion roller comprises a hollow upper roller body, third heat-conducting liquid flows in the upper roller body in a circulating mode, the lower extrusion roller comprises a hollow lower roller body, and fourth heat-conducting liquid flows in the lower roller body in a circulating mode.
As a further improvement, the scraper comprises a scraper body and an adjusting bolt fixedly connected with the scraper body, and the scraper body and the adjusting bolt are both horizontally arranged.
As a further improvement, the resin transfer wheel comprises a hollow wheel body, and a second heat-conducting liquid circulates in the wheel body.
As a further improvement, the impregnation tank comprises a hollow tank body, and a first heat-conducting liquid circulates and flows in the tank body.
As a further improvement, the fiber dividing device comprises a guide roller device for generating and maintaining fiber tension, a yarn outlet end of the guide roller device is horizontally provided with a plurality of shaking shafts, the shaking shafts reciprocate perpendicular to the fiber movement direction, and the movement directions of two adjacent shaking shafts are opposite.
As a further improvement, the guide roller device comprises a middle guide roller wheel which can be adjusted up and down, a first guide roller wheel and a second guide roller wheel are arranged below the middle guide roller wheel, the first guide roller wheel and the second guide roller wheel are arranged on the same horizontal plane, and the first guide roller wheel and the second guide roller wheel are arranged on two sides of the middle guide roller wheel.
As a further improvement, the shaking shaft comprises a guide rail, a wire dividing shaft arranged on the guide rail in a sliding mode, the axis of the wire dividing shaft is on the same horizontal plane with the axis of the first guide roller wheel, and a motor controlling the reciprocating motion of the wire dividing shaft.
The invention also discloses a production process of the fiber thermosetting resin unidirectional tape pre-dipping machine, which is characterized by comprising the following steps:
the method comprises the following steps: unwinding a single fiber cone yarn;
step two: dividing the fiber; enabling the single-bundle fiber bundle obtained in the step one to pass through the guide roller device, then sequentially bypassing each shaking shaft, dragging each shaking shaft to reciprocate along the axial direction by the motor, expanding the width dimension of the single-bundle fiber, and adjusting the shaking frequency to achieve the required width;
step three: resin impregnation; firstly, injecting circulating heating heat conduction oil to heat and melt the resin in the impregnation tank, and simultaneously heating the resin transfer wheel by the heated circulating heat conduction oil, wherein the surface temperature of the resin transfer wheel is the same as or slightly different from the melting temperature of the resin; secondly, the resin transfer wheel rotates reversely to the forward direction of the fiber, one third part of the excircle of the resin transfer wheel is in the molten resin, the distance between the scraper and the resin transfer wheel is adjusted, the scraper scrapes off the redundant resin to leave a thin layer of molten resin, two thirds of the excircle of the resin transfer wheel leave a thin layer of molten resin, when the split fiber is in contact with the resin transfer wheel, the resin is impregnated on the surface of the fiber due to reverse movement, or the thin resin on the surface of the transfer wheel is taken away by the capillary fiber of the fiber bundle, which is a resin transfer method, and the fiber is not damaged in the process of impregnating the fiber with the resin;
step four: resin extrusion; extruding the fibers obtained in the third step by the resin extruding device, and adjusting the gap between the upper extruding roller and the lower extruding roller according to the thickness requirement of the prepreg tape, so that the fibers are extruded by the resin extruding device, redundant resin on the fibers is extruded, and air bubbles between the resin and the capillary fibers are extruded to eliminate cavities between the capillary fibers, thereby being beneficial to improving the strength of the prepreg tape;
step five: and D, moving the impregnated resin fiber unidirectional tape prepared in the step four out of the resin extrusion device, slightly cooling, and entering a final spiral winding process.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that:
firstly, the method comprises the following steps: the prepreg in the field of composite materials is a semi-finished product material, the quality of a finished product to be manufactured requires that the resin content is constant, the degree of impregnation of fibers by resin is sufficient,
secondly, the method comprises the following steps: the thermosetting resin has certain concentration after being hot-melted, and the fiber can be split when the fiber passes through the resin, but the resin impregnation device ensures that the fiber can not be damaged in the process of impregnating the fiber with the resin by adopting a resin transfer method;
thirdly, the method comprises the following steps: in order to meet the requirement of constant resin content, the resin extrusion device is arranged, and the gap between the upper extrusion roller and the lower extrusion roller is adjusted according to the thickness requirement of the prepreg tape, so that redundant resin on fibers is extruded, bubbles between the resin and capillary fibers are extruded, cavities among the capillary fibers are eliminated, and the strength of the prepreg tape is improved;
fourthly: the thermosetting resin prepreg tape produced by the invention can be stored at low temperature, can be transported for a long distance, does not pollute the environment and provides convenience for reasonable use.
The invention is further described with reference to the following figures and detailed description.
Drawings
FIG. 1 is a schematic flow diagram of the production process of the present invention;
FIG. 2 is a schematic structural view of the fiber dividing apparatus of the present invention;
FIG. 3 is a right side view of FIG. 2;
FIG. 4 is a schematic structural view of a resin impregnation apparatus according to the present invention;
FIG. 5 is a schematic view showing the structure of a resin extruding apparatus according to the present invention;
FIG. 6 is another schematic view of the resin impregnation apparatus according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example (b): as shown in the attached drawings 1-6, the fiber thermosetting resin one-way belt pre-dipping machine comprises a fiber dividing device 2 arranged at a yarn outlet end of a fiber unreeling device 1, a resin impregnating device 3 is arranged at the yarn outlet end of the fiber dividing device 2, a resin extruding device 4 is arranged at the yarn outlet end of the resin impregnating device 3, and a cooling area 5, a traction area 6 and a spiral reeling area 7 are sequentially arranged at the yarn outlet end of the resin extruding device 4.
The fibers referred to in the present invention may be selected from carbon fibers; glass fibers; aramid fibers, and the like.
The resin impregnation device 3 comprises a sunken impregnation tank 31, the impregnation tank 31 comprises a hollow tank body 311, the tank body 311 is a 304 stainless steel plate tank body, a first heat-conducting liquid 312 circularly flows in the tank body 311, and the first heat-conducting liquid 312 is heat-conducting oil; a fiber guide shaft 32 is arranged at one end, where fibers enter, of the outer side of the impregnation tank 31, a resin transfer wheel 33 is arranged in the impregnation tank 31, and the rotation direction of the resin transfer wheel 33 is opposite to the advancing direction of the fibers. The resin transfer wheel 33 comprises a hollow wheel body 331, a second heat-conducting liquid 332 flows in the wheel body 331 in a circulating manner, and the second heat-conducting liquid 332 is also heat-conducting oil; the resin transfer wheel 33 is provided with a scraper 34 at one side from which the fibers are drawn out, the scraper 34 comprises a cutter body 341 and an adjusting bolt 342 fixedly connected with the cutter body 34, and the cutter body 341 and the adjusting bolt 342 are both horizontally arranged. The adjusting bolt 342 can adjust a gap between the cutter body 341 and the resin transfer wheel 33. The servo motor and the reducer drag the resin transfer wheel 33 to rotate.
The tank body 311 is filled with circularly heated heat transfer oil to heat and melt the resin in the tank body 311, the thermosetting resin has a certain concentration after being hot-melted, the fiber can be split when the fiber passes through the resin, in order to solve this problem, the present invention employs a resin transfer method, in which a third portion of the outer circumference of the resin transfer wheel 33 is in molten resin, the resin transfer wheel 33 is rotated out of the resin with its outer circumferential surface filled with the molten resin, the scraper 34 scrapes off the excess resin, leaving a thin layer of the molten resin, two thirds of the outer circumference of the resin transfer wheel 33 is in such a state that, when the divided fibers are in contact with the resin transfer wheel 33, the resin is impregnated on the surface of the fiber due to the reverse direction, or the fiber bundle capillary fiber takes away the thin resin on the surface of the resin transfer wheel 33, which is the resin transfer method.
The working state is that the resin transfer wheel 33 rotates against the advancing direction of the fiber, the lower half part of the resin transfer wheel 33 is contacted with the hot melt resin, and the surface of the resin transfer wheel 33 is stuck with a layer of resin when the surface is rotated out of the hot melt resin. The heat transfer oil heater is used for circulating heat transfer oil to heat the resin transfer wheel 33. The difference between the temperature of the surface of the resin transfer wheel 33 and the temperature of the resin in the impregnation tank 31 is used to adjust how much resin is carried off the surface of the resin transfer wheel 33, which affects the resin content of the prepreg tape.
The impregnation process is that the divided fibers are guided by the fiber guide shaft 32 to advance along the surface of the resin transfer wheel 33 with a certain wrap angle, and then the resin on the surface of the resin transfer wheel 33 is impregnated on the capillary fibers.
The resin extrusion device 4 comprises an upper extrusion roller 41 fixedly mounted and a lower extrusion roller below the upper extrusion roller 41, the lower extrusion roller 42 can be adjusted up and down, the upper extrusion roller 41 comprises a hollow upper roller body 411, third heat-conducting liquid 412 flows in an internal circulation mode in the upper roller body 411, the lower extrusion roller 42 comprises a hollow lower roller body 421, fourth heat-conducting liquid 421 flows in an internal circulation mode in the lower roller body 421, the third heat-conducting liquid 412 and the fourth heat-conducting liquid 421 are heat-conducting oil, and a heat-conducting oil heater provides circulating heat-conducting oil to heat the heat-conducting oil.
In order to meet the requirement of constant resin content, the fiber full of resin is extruded by the upper extrusion roll 41 and the lower extrusion roll, the upper extrusion roll 41 and the lower extrusion roll 42 drag the upper extrusion roll 41 and the lower extrusion roll 42 to rotate through a servo motor, a speed reducer and a gear transmission pair, the axial position of the upper extrusion roller 41 is fixed, the axial position of the lower extrusion roller 42 is adjustable up and down, the gap between said upper press roll 41 and said lower press roll 42 is adjusted according to the thickness requirements of the prepreg tape, the pressing force being given by the air cylinder 43, so as to ensure that the gap between the upper squeeze roll 41 and the lower squeeze roll 42 is not changed, so that the excess resin is squeezed off when the fibers enter the upper squeeze roll 41 and the lower squeeze roll 42, and the air bubbles between the resin and the capillary fibers are squeezed to eliminate the hollow spaces between the capillary fibers, which is beneficial to improving the strength of the prepreg tape.
The fiber dividing device 2 comprises a guide roller device 21 for generating and maintaining fiber tension, six shaking shafts 22 are horizontally arranged at the yarn outlet end of the guide roller device 21, the shaking shafts 22 reciprocate perpendicular to the fiber movement direction, and the movement directions of the two adjacent shaking shafts 22 are opposite. The guide roller device 21 includes the middle guide roller wheel 211 that can adjust from top to bottom, the below of middle guide roller wheel 211 is equipped with first guide roller wheel 212 and second guide roller wheel 213, first guide roller wheel 212 with the axis of second guide roller wheel 213 is on same horizontal plane, just first guide roller wheel 212 with second guide roller wheel 213 is located the both sides of middle guide roller wheel 211. The shaking shaft 22 comprises a guide rail 221, a bearing seat 222 is arranged on the guide rail 221, a wire separating shaft 223 is arranged on the guide rail 221 in a sliding mode through the bearing seat 222, the axis of the wire separating shaft 223 and the axis of the first guide roller wheel 212 are on the same horizontal plane, a motor for controlling the reciprocating motion of the wire separating shaft 223 is a servo motor, and the shaking shaft 22 drags the shaking shaft 22 to shake horizontally in a reciprocating mode through the servo motor, a speed reducer, a crank 23 and a connecting rod 24.
The single-bundle fiber enters the fiber dividing device 2, firstly passes through the guide roller device 21, then sequentially bypasses six horizontal shaking shafts 22, is expanded in width dimension, and is adjusted in shaking frequency to achieve the required width.
Dividing is also called opening, taking the carbon fiber T700-12K produced by Dongli in Japan as an example, a bundle of fibers has the appearance of about 5mm in width, about 0.1mm in thickness, 4500m in length, 12000 capillary fibers in 5X0.1 cross-sectional area, resin-impregnated fibers or fibers are contained by epoxy resin, the surface of each capillary fiber is adhered with a certain amount of resin, so that the fiber bundle needs to be scattered or expanded in width and reduced in thickness before being impregnated by the resin, for example, the width is 10 mm; the thickness is also less than 0.1mm, which is a result of splitting, facilitating the next resin impregnation through the fibers.
A production process of a fiber thermosetting resin unidirectional tape pre-dipping machine,
the method comprises the following steps: unwinding a single fiber cone yarn;
step two: dividing the fiber; enabling the single-bundle fiber bundle obtained in the step one to pass through the guide roller device 21, then sequentially bypassing each shaking shaft 22, enabling the motor to drag each shaking shaft 22 to reciprocate along the axial direction, expanding the width dimension of the single-bundle fiber, and adjusting the shaking frequency to achieve the required width;
step three: resin impregnation; firstly, injecting circulating heating heat conduction oil to heat and melt the resin in the impregnation tank 31, and simultaneously heating the resin transfer wheel 33 by the heated circulating heat conduction oil, wherein the surface temperature of the resin transfer wheel 33 is the same as or slightly different from the melting temperature of the resin; secondly, the resin transfer wheel 33 rotates reversely to the forward direction of the fiber, one third part of the outer circle of the resin transfer wheel 33 is in the molten resin, the distance between the scraper 34 and the resin transfer wheel 33 is adjusted, the scraper 34 scrapes off the excess resin to leave a thin layer of molten resin, two thirds of the outer circle of the resin transfer wheel 33 leave a thin layer of molten resin, when the split fiber is in contact with the resin transfer wheel 33, the resin is impregnated on the surface of the fiber due to reverse movement, or the thin resin on the surface of the transfer wheel is taken away by fiber bundle capillary fibers, which is a resin transfer method, and the fiber is not damaged in the process of impregnating the fiber with the resin;
step four: resin extrusion; the fibers obtained in the third step are extruded by the resin extrusion device 4, and the gap between the upper extrusion roller 41 and the lower extrusion roller 42 is adjusted according to the thickness requirement of the prepreg tape, so that the fibers are extruded by the resin extrusion device 4, redundant resin on the fibers is extruded, air bubbles between the resin and the capillary fibers are extruded, and the hollow spaces between the capillary fibers are eliminated, thereby being beneficial to improving the strength of the prepreg tape;
step five: and (4) after the impregnated resin fiber unidirectional tape prepared in the step four is moved out of the resin extrusion device 4, the impregnated resin fiber unidirectional tape enters a cooling area 5 for slight cooling, enters a traction area 6, and finally enters a spiral winding area 7 for winding.
The prepreg tape does not adhere layer to layer, and an isolating film is omitted, so that the preparation cost is greatly saved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a fibre thermosetting resin unilateralism area preimpregnation machine, divides the silk device including setting up the fibre that goes out the yarn end at fibre unwinding device, the yarn end that goes out that the fibre divides the silk device is equipped with resin impregnation device, resin impregnation device goes out the yarn end and is equipped with resin extrusion device, its characterized in that: the resin impregnation device comprises a sunken impregnation tank, a fiber guide shaft is arranged at one end, into which fibers enter, of the outer side of the impregnation tank, a resin transfer wheel is arranged in the impregnation tank, a scraper is arranged on one side, out of which the fibers are pulled, of the resin transfer wheel, and the rotating direction of the resin transfer wheel is opposite to the advancing direction of the fibers.
2. A fibrous thermosetting resin unidirectional tape prepreg machine according to claim 1, characterized in that: the resin extrusion device comprises an upper extrusion roller fixedly mounted and a lower extrusion roller positioned below the upper extrusion roller, the lower extrusion roller can be adjusted up and down, the upper extrusion roller comprises a hollow upper roller body, third heat-conducting liquid flows in the upper roller body in a circulating manner, the lower extrusion roller comprises a hollow lower roller body, and fourth heat-conducting liquid flows in the lower roller body in a circulating manner.
3. A fibrous thermosetting resin unidirectional tape prepreg machine according to claim 1, characterized in that: the scraper comprises a scraper body and an adjusting bolt fixedly connected with the scraper body, and the scraper body and the adjusting bolt are arranged horizontally.
4. A fibrous thermosetting resin unidirectional tape prepreg machine according to claim 1, characterized in that: the resin transfer wheel comprises a hollow wheel body, and a second heat-conducting liquid flows in the wheel body in a circulating mode.
5. A fibrous thermosetting resin unidirectional tape prepreg machine according to claim 1, characterized in that: the impregnation tank comprises a hollow tank body, and first heat-conducting liquid flows in the tank body in a circulating mode.
6. A fibrous thermosetting resin unidirectional tape prepreg machine according to claim 1, characterized in that: the fiber dividing device comprises a guide roller device for generating and maintaining fiber tension, a yarn outlet end of the guide roller device is horizontally provided with a plurality of shaking shafts, the shaking shafts reciprocate perpendicular to the fiber movement direction, and the two adjacent shaking shafts are opposite in movement direction.
7. A fibrous thermosetting resin unidirectional tape preimpregnation machine according to claim 6, characterized in that: the guide roller device comprises a middle guide roller wheel which can be adjusted up and down, a first guide roller wheel and a second guide roller wheel are arranged below the middle guide roller wheel, the first guide roller wheel and the second guide roller wheel are arranged on the same horizontal plane, and the first guide roller wheel and the second guide roller wheel are arranged on two sides of the middle guide roller wheel.
8. A fibrous thermosetting resin unidirectional tape prepreg machine according to claim 7, characterized in that: the shaking shaft comprises a guide rail, a wire separating shaft arranged on the guide rail in a sliding mode, the axis of the wire separating shaft and the axis of the first guide roller wheel are on the same horizontal plane, and a motor used for controlling the wire separating shaft to reciprocate.
9. A process for producing a unidirectional tape using the prepreg of any one of claims 1 to 8, wherein:
the method comprises the following steps: unwinding a single fiber cone yarn;
step two: dividing the fiber; enabling the single-bundle fiber bundle obtained in the step one to pass through the guide roller device, then sequentially bypassing each shaking shaft, dragging each shaking shaft to reciprocate along the axial direction by the motor, expanding the width dimension of the single-bundle fiber, and adjusting the shaking frequency to achieve the required width;
step three: resin impregnation; firstly, injecting circulating heating heat conduction oil to heat and melt the resin in the impregnation tank, and simultaneously heating the resin transfer wheel by the heated circulating heat conduction oil, wherein the surface temperature of the resin transfer wheel is the same as or slightly different from the melting temperature of the resin; secondly, the resin transfer wheel rotates reversely to the forward direction of the fiber, one third part of the excircle of the resin transfer wheel is in the molten resin, the distance between the scraper and the resin transfer wheel is adjusted, the scraper scrapes off the redundant resin to leave a thin layer of molten resin, two thirds of the excircle of the resin transfer wheel leave a thin layer of molten resin, when the split fiber is in contact with the resin transfer wheel, the resin is impregnated on the surface of the carbon fiber due to reverse movement, or the thin resin on the surface of the transfer wheel is taken away by the capillary fiber of the carbon fiber bundle, which is a resin transfer method, and the fiber is not damaged in the process of impregnating the fiber with the resin;
step four: resin extrusion; extruding the fibers obtained in the third step by the resin extruding device, and adjusting the gap between the upper extruding roller and the lower extruding roller according to the thickness requirement of the prepreg tape, so that the fibers are extruded by the resin extruding device, redundant resin on the fibers is extruded, and air bubbles between the resin and the capillary fibers are extruded to eliminate cavities between the capillary fibers, thereby being beneficial to improving the strength of the prepreg tape;
step five: and D, moving the impregnated resin fiber unidirectional tape prepared in the step four out of the resin extrusion device, slightly cooling, and entering a final spiral winding process.
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| CN202011068783.9A CN111923447A (en) | 2020-10-09 | 2020-10-09 | Fiber thermosetting resin unidirectional tape pre-dipping machine and production process thereof |
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| CN202011068783.9A CN111923447A (en) | 2020-10-09 | 2020-10-09 | Fiber thermosetting resin unidirectional tape pre-dipping machine and production process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115157484A (en) * | 2022-06-14 | 2022-10-11 | 途格科技(广东)有限公司 | Laser preparation method and device for continuous carbon fiber reinforced thermoplastic composite prepreg tape |
| CN115195151A (en) * | 2022-06-27 | 2022-10-18 | 华祥（中国）高纤有限公司 | Chemical fiber filament fiber composite production equipment and process |
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Application publication date: 20201113 |