CN116080743A - Carbon fiber steering wheel and manufacturing method thereof - Google Patents

Carbon fiber steering wheel and manufacturing method thereof Download PDF

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Publication number
CN116080743A
CN116080743A CN202211731464.0A CN202211731464A CN116080743A CN 116080743 A CN116080743 A CN 116080743A CN 202211731464 A CN202211731464 A CN 202211731464A CN 116080743 A CN116080743 A CN 116080743A
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China
Prior art keywords
carbon fiber
steering wheel
fiber fabric
die
molding
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Pending
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CN202211731464.0A
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Chinese (zh)
Inventor
顾勇涛
张盛
彭华
王成
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Jiangsu Hengrui Carbon Fiber Technology Co ltd
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Jiangsu Hengrui Carbon Fiber Technology Co ltd
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Priority to CN202211731464.0A priority Critical patent/CN116080743A/en
Publication of CN116080743A publication Critical patent/CN116080743A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/04—Hand wheels
    • B62D1/06—Rims, e.g. with heating means; Rim covers
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • 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
    • B29C70/34—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 and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/345—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 and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3047—Steering wheels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Composite Materials (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

The application relates to the field of steering wheels, in particular to a carbon fiber steering wheel and a manufacturing method thereof, wherein the steering wheel comprises a steering wheel body, and an expansion adhesive film, a unidirectional carbon fiber fabric layer and a carbon fiber fabric are sequentially arranged on the steering wheel body from inside to outside; the unidirectional carbon fiber fabric layer comprises more than 1 layer of unidirectional carbon fiber fabric, the extending direction of carbon fiber bundles of the adjacent 2 layers of unidirectional carbon fiber fabric is an included angle, the application improves the hand feeling of the carbon fiber steering wheel, and the outer surface is smooth.

Description

Carbon fiber steering wheel and manufacturing method thereof
Technical Field
The application relates to the technical field of steering wheels, in particular to a carbon fiber steering wheel and a manufacturing method thereof.
Background art steering wheels are important operating and safety components on automobiles, and are the locations that a driver must make full contact with. At present, the commonly used steering wheel body of the automobile is made of foamed plastic, the appearance is an annular cylinder, the material is poor in handfeel, the appearance is single and boring, the steering wheel body is driven for a long time, and the sensitivity to emergency strain of a specific event is easily reduced.
Carbon fiber is used as a light high-strength novel material for the automobile industry more and more, has a series of excellent performances such as high axial strength and modulus, low density, no creep deformation, good fatigue resistance, good corrosion resistance, good electric conduction and heat conduction properties, and also has the characteristics of flexibility, braiding property and the like of the fiber, and simultaneously has exquisite appearance textures.
Various methods for preparing carbon fiber steering wheels are known.
The conventional method for preparing the carbon fiber steering wheel by manually coating carbon fiber dry cloth and cooperatively coating epoxy resin for curing is low in molding efficiency, the dry cloth is easy to deform and disorder, and the modeling corner position is difficult to construct and operate. And the other is to prepare the carbon fiber steering wheel by adopting a mould pressing process. The bulletin number is: CN210211020U discloses a carbon fiber light weight steering wheel mould, including last mould and bed die, the bed die includes the bed plate, and the bed plate both sides are fixed with square iron block through the nut, and square iron block upper end is fixed with the die holder through the nut, installs lower heating mechanism in the die holder. The method adopts an integral mould pressing mould, the mould cost is high, a single carbon fiber sheet cannot be paved and stuck with a whole circle of modeling, and a fracture or a splicing line is necessarily arranged in the middle, so that the attractive appearance of the product is influenced.
The publication number is: CN112606896a discloses a process for manufacturing a carbon fiber heating steering wheel, wherein a heating cloth is coated on an inner foaming layer in a double faced adhesive tape or adhesive brushing mode, and the heating cloth is carbon fiber heating cloth with a uniform heating function or cloth made of soft fiber materials coated with heating carbon rewards. The adhesive adopted by the method is double-sided adhesive or adhesive brushing, and the carbon fiber heating steering wheel manufactured by the double-sided adhesive or adhesive brushing is easy to form concave-convex lines on the surface of the steering wheel due to uneven molding pressure.
Disclosure of Invention
In order to improve the hand feeling of the carbon fiber steering wheel, the outer surface is smooth and smooth, and the carbon fiber steering wheel and the manufacturing method thereof are provided.
In a first aspect, the present application provides a carbon fiber steering wheel, which adopts the following technical scheme:
a carbon fiber steering wheel comprises a steering wheel body, wherein an expansion adhesive film, a unidirectional carbon fiber fabric layer and a carbon fiber fabric are sequentially arranged on the steering wheel body from inside to outside;
the unidirectional carbon fiber fabric layer comprises more than 1 layer of unidirectional carbon fiber fabric, and the extending directions of carbon fiber bundles of adjacent 2 layers of unidirectional carbon fiber fabrics form included angles.
Through adopting above-mentioned technical scheme, the inflation glued membrane is as inside bonding transition layer, both can play the bonding effect, can provide inside shaping pressure simultaneously at the shaping process, guarantees that carbon fiber steering wheel outward appearance is smooth and even after the shaping, improves the steering wheel feel.
Because the expansion adhesive film can generate internal forming pressure on the carbon fiber fabric in the forming process, the arrangement of the unidirectional carbon fiber fabric layer not only can bear the pressure, but also can effectively reduce the overflow of the black expansion adhesive film to the appearance layer of the carbon fiber steering wheel due to the unidirectional carbon fiber fabric layer with included angles formed by the extending directions of the carbon fiber bundles of the adjacent 2 layers of unidirectional carbon fiber fabrics.
In a specific embodiment, the extending direction of the carbon fiber bundles of the adjacent 2 layers of unidirectional carbon fiber fabrics forms an included angle of 60-90 degrees.
By adopting the technical scheme, when the extending direction of the carbon fiber bundles of the adjacent 2 layers of unidirectional carbon fiber fabrics is 60-90 degrees, the unidirectional carbon fiber fabrics of the adjacent 2 layers effectively reduce unidirectional penetration gaps, so that the overflow of the black expansion adhesive film to the appearance layer of the carbon fiber steering wheel can be further reduced.
In a specific embodiment, the initial foaming temperature of the expansion adhesive film is 80-100 ℃, and the foaming multiplying power is 2-3 times.
By adopting the technical scheme, the foaming initial temperature of the expanded adhesive film is too high, if the foaming initial temperature exceeds 120 ℃, the internal pressure is difficult to expand and release at the existing molding temperature, and the molded product has defects, namely large-area pinholes and shape defects. The foaming multiplying power is too low, the internal forming pressure is small, and the product also has defects, namely large-area pinholes and defects.
In a second aspect, the present application provides a method for manufacturing a carbon fiber steering wheel, including the following working steps:
an expansion adhesive film, a unidirectional carbon fiber fabric layer and a carbon fiber fabric are sequentially coated on the steering wheel body from inside to outside; the circumference error of the whole outer ring of the steering wheel coated with the expansion adhesive film, the unidirectional carbon fiber fabric layer and the carbon fiber fabric is controlled within +/-2 mm;
placing the steering wheel body which is sequentially coated with the expansion adhesive film, the unidirectional carbon fiber fabric layer and the carbon fiber fabric from inside to outside into a mold for molding;
wherein the carbon fiber fabric is a presoaked carbon fiber fabric.
By adopting the technical scheme, the carbon-coated technology with the single-mode takt time of 30-60min/pcs and high forming efficiency Yu Ganbu is adopted for forming by adopting the presoaked carbon fiber fabric matched with a die.
If the circumferential length error of the whole outer ring of the steering wheel is > +2mm, namely the diameter of the outer ring is overlarge, die clamping yarns are easy to occur in die clamping, the yarns cannot be placed in a die, disorder patterns appear on the surface of a molded product, and die clamping seams are large; if the error of the circumference error of the whole outer circle of the steering wheel is less than-2 mm, the expansion adhesive film cannot generate enough internal molding pressure on the carbon fiber fabric in the molding process, so that insufficient internal pressure is caused, and the appearance of the carbon fiber steering wheel is affected.
In a specific embodiment, the molding temperature is 130-140 ℃, the molding pressure is 5-8MPa, and the heat preservation time is 30-60min.
By adopting the technical scheme, the forming pressure is between 5 and 8MPa, and the forming pressure can be matched with the internal forming pressure of the expansion adhesive film on the carbon fiber fabric in the forming process, so that the outer surface of the steering wheel is smooth.
In a specific implementation mode, the die comprises an upper die and a lower die, wherein an upper forming groove is formed in the side wall of one side of the upper die, a lower forming groove is formed in the side wall of one side of the lower die, and a forming inner cavity is formed by the upper forming groove and the lower forming groove; the two sides of the upper die and the lower die are respectively provided with a blocking die, and the blocking die is respectively abutted against the side walls of the upper die and the lower die; the wall thickness of the heat conduction areas of the upper die and the lower die is 15-20mm.
Through adopting above-mentioned technical scheme, the setting of keeping off the mould not only can carry out spacingly to the both sides of shaping inner chamber, thereby can make expansion glued membrane, unidirectional carbon fiber fabric layer and carbon fiber fabric extrusion deformation and the steering wheel lateral wall in the cladding shaping inner chamber moreover.
Because the wall thickness of the heat conduction areas of the upper die and the lower die is 15-20mm, the dies can rapidly transfer heat to the carbon fiber material sheets under the condition of ensuring the rigidity of the dies, the molding production takt is shortened, and the efficiency is improved.
In a specific embodiment, the blocking die comprises a first slide block and a second slide block, and the first slide block is detachably connected with the second slide block; an upper clamping groove is formed in the side wall of one side of the first sliding block, a lower clamping groove is formed in the side wall of one side of the second sliding block, and a clamping through hole is formed by the upper clamping groove and the lower clamping groove; the side walls of the two sides of the upper die are abutted against the side walls of the first sliding block; and the two side walls of the lower die are abutted against the side wall of the second sliding block.
Through adopting above-mentioned technical scheme, the setting of first slider and second slider is convenient for keep off the installation and the dismantlement of mould.
In a specific implementation mode, a first molding extrusion convex ring is arranged on the side wall of the first sliding block, which is close to one side of the upper die, and is positioned in the upper die, and the outer side wall of the first molding extrusion convex ring is abutted against an upper molding groove of the upper die; the side wall of the second sliding block, which is close to one side of the lower die, is provided with a second molding extrusion convex ring, the second molding extrusion convex ring is positioned in the lower die, and the outer side wall of the second molding extrusion convex ring is abutted against the lower molding groove of the lower die.
By adopting the technical scheme, the first molding extrusion convex ring and the second molding extrusion convex ring are inserted into the upper die and the lower die, and the expansion adhesive film, the unidirectional carbon fiber fabric layer and the carbon fiber fabric can be further extruded and deformed so as to cover the side wall of the steering wheel in the molding cavity.
In a specific implementation, the silica gel sleeves are arranged in the upper molding groove of the upper die and the lower molding groove of the lower die, and the heating molding is adopted, the heating temperature is 130-140 ℃, and the heat preservation time is 70-90min.
Through adopting above-mentioned technical scheme, the silica gel cover can expand when being heated, and the silica gel cover can produce by outside-in shaping pressure to carbon fiber fabric, and the expansion glued membrane can produce by inside-out shaping pressure to carbon fiber fabric in the shaping process, can realize that many moulds solidify the shaping simultaneously in the baking house, improves product production efficiency to save the moulding press equipment cost.
In a specific embodiment, when the carbon fiber fabric is coated, the lap line intersected by the carbon fiber fabric on the steering wheel is positioned in a visual blind area on the back of the steering wheel, the coating starting end and the lap end of the carbon fiber fabric are overlapped, and the length of the overlapped section is 3-5 mm.
By adopting the technical scheme, the coating starting end and the overlap end of the carbon fiber fabric are overlapped, the length of the overlapped section is 3-5 mm, and when the overlapped section is too short, the carbon fiber fabric cannot be molded in the molding process after molding; when the overlapped section is too long, the outer surface of the steering wheel is raised and is not smooth.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the expansion adhesive film is used as an internal bonding transition layer, so that the bonding effect can be achieved, meanwhile, the internal forming pressure can be provided in the forming process, the appearance of the formed carbon fiber steering wheel is smooth and smooth, and the hand feeling of the steering wheel is improved;
2. the unidirectional carbon fiber fabric layer can also effectively reduce the overflow of the black expansion adhesive film to the appearance layer of the carbon fiber steering wheel;
3. the presoaked carbon fiber fabric is matched with a die for molding, so that the molding efficiency is high;
4. the blocking die can enable the expansion adhesive film, the unidirectional carbon fiber fabric layer and the carbon fiber fabric to be extruded and deformed so as to cover the side wall of the steering wheel in the molding cavity, and the carbon fiber coating quality of the steering wheel is improved.
Drawings
Fig. 1 is a schematic structural diagram of a carbon fiber steering wheel in embodiment 1 of the present application;
FIG. 2 is a schematic structural view of a mold in example 1 of the present application;
FIG. 3 is a schematic view of the upper die structure of the present application;
FIG. 4 is a schematic view of the lower die structure of the present application;
fig. 5 is a cross-sectional view of the mold in example 2 of the present application.
Reference numerals: 1. a steering wheel body; 2. expanding the adhesive film; 3. a unidirectional carbon fiber fabric layer; 4. a carbon fiber fabric; 5. an apparent layer;
1. an upper die; 12. a lower die; 13. forming a groove; 14. a lower molding groove; 15. a seal ring;
21. a first slider; 22. a second slider;
31. a first molded extrusion collar; 32. a second molded extrusion collar; 33. a first direction plate clamping projection; 34. a second steering wheel clamping projection;
41. and a silica gel sleeve.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
Example 1
The embodiment of the application discloses a carbon fiber steering wheel.
As shown in fig. 1, the carbon fiber steering wheel comprises a steering wheel body 1 made of polyurethane rigid foam, wherein an expansion adhesive film 2, a unidirectional carbon fiber fabric layer 3 and a carbon fiber fabric 4 are sequentially coated and paved on the steering wheel body 1 from inside to outside. The carbon fiber fabric 4 is externally coated with an apparent layer 5, and the apparent layer 5 is coated by transparent paint.
Wherein the initial foaming temperature of the expanded adhesive film 2 is 80-100 ℃ and the foaming multiplying power is 2-3 times. In this example, the initial foaming temperature of the expanded adhesive film 2 is 90 ℃, and the foaming ratio is 2 times.
The unidirectional carbon fiber fabric layer 3 comprises more than 1 layer of unidirectional carbon fiber fabric, and the extending directions of carbon fiber bundles of adjacent 2 layers of unidirectional carbon fiber fabrics form included angles. In this embodiment, the unidirectional carbon fiber fabric layer 3 includes 2 unidirectional carbon fiber fabrics, and the extending direction of the carbon fiber bundles of the adjacent 2 unidirectional carbon fiber fabrics forms an included angle of 90 degrees.
Namely, one layer of unidirectional carbon fiber fabric close to the expansion adhesive film 2 is paved and stuck at-45 degrees, and then the other layer of unidirectional carbon fiber fabric is paved and stuck at +45 degrees, so that the extending direction of the carbon fiber bundles of the adjacent 2 layers of unidirectional carbon fiber fabrics forms an included angle of 90 degrees.
The coating starting end and the overlap end of the unidirectional carbon fiber fabric are overlapped, and the length of the overlapped section is 2-3 mm. In this embodiment, the length of the overlapping section where the coating start end and the overlapping end of the unidirectional carbon fiber fabric overlap is 2mm. In fig. 1, the position indicated by arrow B. The overlapping length of the overlapping sections of the unidirectional carbon fiber fabrics is short, the internal black expansion adhesive film 2 can overflow the apparent layer 5, and the apparent layer 5 is provided with a black adhesive film, so that the appearance is not attractive. The length of the overlapping section of the unidirectional carbon fiber fabric is long, and the internal binding force is larger, so that the internal pressure of the internal expansion adhesive film 2 is influenced to be released.
The embodiment of the application also discloses a manufacturing method of the carbon fiber steering wheel, which comprises the following steps:
an expansion adhesive film 2, a unidirectional carbon fiber fabric layer 3 and a carbon fiber fabric 4 are sequentially coated on the steering wheel body 1 from inside to outside; the circumference error of the whole outer ring of the steering wheel, which is coated with the expansion adhesive film 2, the unidirectional carbon fiber fabric layer 3 and the carbon fiber fabric, is controlled within +/-2 mm;
placing the steering wheel body 1 which is sequentially coated with the expansion adhesive film 2, the unidirectional carbon fiber fabric layer 3 and the carbon fiber fabric 4 from inside to outside into a mold for molding;
wherein the carbon fiber fabric 4 is a pre-impregnated carbon fiber fabric.
Wherein the steering wheel body 1 is a PU foam layer, the Shore hardness is 70+/-3 HA, and the thermal deformation temperature is more than or equal to 140 ℃.
When the carbon fiber fabric 4 is coated, the crossover line intersected by the carbon fiber fabric 4 on the steering wheel is positioned in a visual blind area at the back of the steering wheel, and is cut neatly by a cutting jig, so that the appearance texture is attractive.
And the coating starting end and the overlap end of the carbon fiber fabric 4 are overlapped, and the length of the overlapped section is 3-5 mm. In this embodiment, the length of the overlapping section where the wrapping start end and the overlap end of the carbon fiber fabric 4 overlap is 4mm. In fig. 1, the position indicated by arrow a. The crossover line is cut neatly by a cutting jig, and the appearance texture is exquisite.
Wherein, the steering wheel body 1 in the molding machine is placed in a mold for molding at the molding temperature of 130-140 ℃, the molding pressure of 5-8MPa and the heat preservation time of 30-60min. In this example, the molding temperature was 140℃and the molding pressure was 6MPa, and the heat preservation time was 50 minutes.
Wherein the weight of the carbon fiber fabric prepreg surface is 400-600 g/cm, and the resin content is 37-42%.
Referring to fig. 1, 2 and 3, the mold comprises an upper mold 11 and a lower mold 12 matched with the upper mold 11, wherein an upper molding groove 13 is formed in the side wall of the upper mold 11, which is close to the lower mold 12, and a lower molding groove 14 is formed in the side wall of the lower mold 12, which is close to the upper mold 11, and the upper molding groove 13 and the lower molding groove 14 form a molding inner cavity.
The wall thickness of the heat conduction areas of the upper die 11 and the lower die 12 is 15-20mm, namely, the wall thickness of the thinnest area of the upper die 11 and the lower die 12 is 15-20mm, so that the dies can rapidly transfer heat to carbon fiber sheets under the condition of ensuring the rigidity of the dies, and the molding production beat is shortened.
The first height difference exists between the upper die surface on one side of the upper molding groove 13 and the upper die surface on the other side of the upper molding groove 13, i.e., the upper die surfaces on both sides of the upper molding groove 13 are not on the same horizontal plane. The second height difference exists between the lower die surface on one side of the lower molding groove 14 and the lower die surface on the other side of the lower molding groove 14, i.e., the lower die surfaces on both sides of the lower molding groove 14 are not on the same horizontal plane. The first height difference is the same as the second height difference, and the upper die surface of the upper die 11 is in fit with the lower die surface of the lower die 12; and since the first height difference is the same as the second height difference, the upper die 11 and the lower die 12 can be used in cooperation. Because the steering wheel is oval, the formation of first difference in height and second difference in height is favorable to carrying out the drawing of patterns to the steering wheel after the shaping.
Sealing grooves are formed in the surfaces of the lower dies on two sides of the lower forming groove 14, and sealing rings 15 are also arranged in the sealing grooves. The sealing ring 15 can avoid resin loss and ensure the smooth appearance of the steering wheel.
The two sides of the upper die 11 and the lower die 12 are respectively provided with a baffle die which is respectively abutted against the side walls of the upper die 11 and the lower die 12. The blocking die comprises a first sliding block 21 and a second sliding block 22, and the first sliding block 21 is connected with the second sliding block 22 through bolts. An upper clamping groove 23 is formed in the side wall of the first sliding block 21, which is close to the side of the second sliding block 22, a lower clamping groove 24 is formed in the side wall of the second sliding block 22, which is close to the side of the first sliding block 21, and the upper clamping groove 23 and the lower clamping groove 24 form a clamping through hole. The side walls of the two sides of the upper die 11 are abutted against the side walls of the first sliding block 21; both side walls of the lower die 12 are abutted against the side walls of the second slider 22.
The side wall of the first sliding block 21, which is close to one side of the upper die 11, is provided with a first molding extrusion convex ring 31, the first molding extrusion convex ring 31 is inserted into the upper die 11, and the outer side wall of the first molding extrusion convex ring 31 is abutted against the upper molding groove 13 of the upper die 11. The first direction disc locking projection 33 is mounted on the inner side wall of the first molding pressing projection 31. The side wall of the second slider 22, which is close to one side of the lower die 12, is provided with a second molding extrusion convex ring 32, the second molding extrusion convex ring 32 is inserted into the lower die 12, and the outer side wall of the second molding extrusion convex ring 32 abuts against the lower molding groove 14 of the lower die 12. A second steering wheel detent projection 34 is mounted on the inside wall of the second molded crush lobe 32.
Example 2
A method for manufacturing a carbon fiber steering wheel, comprising the steps of:
an expansion adhesive film 2, a unidirectional carbon fiber fabric layer 3 and a carbon fiber fabric 4 are sequentially coated on the steering wheel body 1 from inside to outside;
placing the steering wheel body 1 which is sequentially coated with the expansion adhesive film 2, the unidirectional carbon fiber fabric layer 3 and the carbon fiber fabric 4 from inside to outside into a mold for molding;
wherein the carbon fiber fabric 4 is a pre-impregnated carbon fiber fabric.
Wherein, the baking oven is adopted for heating, curing and forming, the heating temperature is 130-140 ℃, and the heat preservation time is 70-90min. In this example, the heating temperature was 130℃and the incubation time was 80min.
The mold used in this example is different from the mold used in example 1 in that:
referring to fig. 4, a silica gel sleeve mounting groove is formed in the upper molding groove 13 of the upper die 11, a silica gel sleeve mounting groove is also formed in the lower molding groove 14 of the lower die 12, and a silica gel sleeve 41 is mounted in the silica gel sleeve mounting groove.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. The carbon fiber steering wheel is characterized by comprising a steering wheel body (1), wherein an expansion adhesive film (2), a unidirectional carbon fiber fabric layer (3) and a carbon fiber fabric (4) are sequentially arranged on the steering wheel body (1) from inside to outside;
the unidirectional carbon fiber fabric layer (3) comprises more than 1 layer of unidirectional carbon fiber fabric, and the extending directions of carbon fiber bundles of adjacent 2 layers of unidirectional carbon fiber fabrics form included angles.
2. A carbon fiber steering wheel according to claim 1, wherein: the extending direction of the carbon fiber bundles of the adjacent 2 layers of unidirectional carbon fiber fabrics forms an included angle of 60-90 degrees.
3. A carbon fiber steering wheel according to claim 1, wherein: the initial foaming temperature of the expansion adhesive film (2) is 80-100 ℃, and the foaming multiplying power is 2-3 times.
4. A method of manufacturing a carbon fiber steering wheel according to any one of claims 1 to 3, comprising the steps of:
an expansion adhesive film (2), a unidirectional carbon fiber fabric layer (3) and a carbon fiber fabric (4) are sequentially coated on the steering wheel body (1) from inside to outside, and the circumferential tolerance of the whole outer ring of the coated steering wheel is controlled within +/-2 mm;
placing a steering wheel body (1) which is sequentially coated with an expansion adhesive film (2), a unidirectional carbon fiber fabric layer (3) and a carbon fiber fabric (4) from inside to outside into a mold for molding;
wherein the carbon fiber fabric is a presoaked carbon fiber fabric.
5. The method for manufacturing a carbon fiber steering wheel according to claim 4, wherein: the molding temperature is 130-140 ℃, the molding pressure is 5-8MPa, and the heat preservation time is 30-60min.
6. The method for manufacturing a carbon fiber steering wheel according to claim 4, wherein: the die comprises an upper die (11) and a lower die (12), wherein an upper forming groove (13) is formed in the side wall of one side of the upper die (11), a lower forming groove (14) is formed in the side wall of one side of the lower die (12), and the upper forming groove (13) and the lower forming groove (14) form a forming inner cavity; the two sides of the upper die (11) and the lower die (12) are respectively provided with a blocking die, and the blocking die is respectively abutted against the side walls of the upper die (11) and the lower die (12); the wall thickness of the heat conduction areas of the upper die (11) and the lower die (12) is 15-20mm.
7. The method for manufacturing a carbon fiber steering wheel according to claim 6, wherein: the blocking die comprises a first sliding block (21) and a second sliding block (22), and the first sliding block (21) is detachably connected with the second sliding block (22); an upper clamping groove (23) is formed in the side wall of one side of the first sliding block (21), a lower clamping groove (24) is formed in the side wall of one side of the second sliding block (22), and a clamping through hole is formed by the upper clamping groove (23) and the lower clamping groove (24); the side walls of the two sides of the upper die (11) are abutted against the side walls of the first sliding block (21); and the two side walls of the lower die (12) are abutted against the side wall of the second sliding block (22).
8. The method for manufacturing a carbon fiber steering wheel according to claim 7, wherein: a first molding extrusion convex ring (31) is arranged on the side wall of the first sliding block (21) close to one side of the upper die (11), the first molding extrusion convex ring (31) is positioned in the upper die (11), and the outer side wall of the first molding extrusion convex ring (31) is abutted against the upper molding groove (13) of the upper die (11); the side wall of the second sliding block (22) close to one side of the lower die (12) is provided with a second molding extrusion convex ring (32), the second molding extrusion convex ring (32) is positioned in the lower die (12), and the outer side wall of the second molding extrusion convex ring (32) is abutted against the lower molding groove (14) of the lower die (12).
9. The method for manufacturing a carbon fiber steering wheel according to claim 6, wherein: a silica gel sleeve (41) is arranged in the upper forming groove (13) of the upper die (11) and in the lower forming groove (14) of the lower die (12); heating to 130-140 deg.C for 70-90min.
10. The method for manufacturing a carbon fiber steering wheel according to claim 4, wherein: when the carbon fiber fabric (4) is coated, the crossover line intersected by the carbon fiber fabric (4) on the steering wheel is positioned in a visual blind area at the back of the steering wheel, the coating starting end and the lap end of the carbon fiber fabric (4) are overlapped, and the length of the overlapped section is 3-5 mm.
CN202211731464.0A 2022-12-30 2022-12-30 Carbon fiber steering wheel and manufacturing method thereof Pending CN116080743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211731464.0A CN116080743A (en) 2022-12-30 2022-12-30 Carbon fiber steering wheel and manufacturing method thereof

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Application Number Priority Date Filing Date Title
CN202211731464.0A CN116080743A (en) 2022-12-30 2022-12-30 Carbon fiber steering wheel and manufacturing method thereof

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Publication Number Publication Date
CN116080743A true CN116080743A (en) 2023-05-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116811293A (en) * 2023-06-21 2023-09-29 广东众森实业发展有限公司 Automatic change hot briquetting mould of unloading formula carbon fiber automotive interior spare

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116811293A (en) * 2023-06-21 2023-09-29 广东众森实业发展有限公司 Automatic change hot briquetting mould of unloading formula carbon fiber automotive interior spare
CN116811293B (en) * 2023-06-21 2024-01-23 广东众森实业发展有限公司 Automatic change hot briquetting mould of unloading formula carbon fiber automotive interior spare

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