TW201529363A - Method of manufacturing carbon fiber wheel rim of bicycle and product thereof - Google Patents

Abstract

The invention relates to a method of manufacturing carbon fiber wheel rim of bicycle and its product comprising steps: preparing a pre-shaping mold and a movable pre-shaping auxiliary mold, laterally inserting several bolt members into the pre-shaping auxiliary mold to orientate and continuously wind the carbon fiber prepreg wires on the outside of the pre-shaping mold and the pre-shaping auxiliary mold by taking the cross-section as an U-shaped track and hanging at the bolt member as the fulcrum, thereby wrapping with multi-layers and forming an un-solidified pre-shaping carbon fiber housing, so that the pre-shaping carbon fiber housing is demolded from the pre-shaping mold to wrap the exterior of an inner skeleton to be the wheel rim. The wheel rim of the carbon fiber composite material is formed after heating, pressurizing, shaping, and solidifying. The manufacturing method quickly and accurately forms the carbon fiber wheel rims of different types to effectively reduce the defective rate.

Description

Bicycle carbon fiber rim manufacturing method and product thereof

The invention relates to the technical field of bicycles involved in traffic vehicles, in particular to a method and a product for manufacturing a bicycle rim by using a composite material of carbon fibers.

According to the trend of lightweighting bicycles, the advanced bicycle body including the rims has been made of carbon fiber composite materials. The use of carbon fiber materials with high rigidity and light weight has also led to the evolution of bicycle rims. For example, the certificate number No. I327533 "Bicycle rim structure and method made of carbon fiber woven material" invention patent case <hereinafter: cited before the case>, the method includes: (a) by a number of carbon fiber tow woven (Braid a carbon fiber woven material, wherein the ends of each of the carbon fiber tows form a long-axis end of the tubular or ribbon-shaped carbon fiber woven material; (b) the carbon fiber woven material is impregnated into the resin to be impregnated with the resin (c) inserting at least one layer of carbon fiber woven material impregnated with resin into a molding die preset to a desired rim shape; (d) curing the carbon fiber woven material in the molding die by thermoforming The bicycle rim is formed; accordingly, the simplification of the production process, the reduction of the manufacturing cost, and the rim of the integrally formed structure can be achieved.

The pre-citation case does have the advantage of rapid production, but there is still a problem that needs to be changed: the pre-existing case is in the forming mold, and the carbon fiber woven material for impregnating the resin is stacked and placed, because the forming mold still needs to be The cooperation of the lower mold, so that the carbon fiber woven material is only stacked on the lower mold, and the carbon fiber woven material may not completely fill the relative position of the upper mold and its corner when the upper mold is joined to the lower mold, which cannot guarantee the carbon fiber weaving of the immersion resin. The material can be accurately laminated with the cavity of the molding die, so this method takes out the carbon fiber-formed rim after the molding of the mold, and the shape and shape after molding are insufficient.

The inventors of the present invention have intensively studied and developed in view of the foregoing problems, and therefore the main object of the present invention is to provide a method for manufacturing a bicycle carbon fiber rim and a product thereof, which are mainly uncured carbon fiber prepreg, angularly symmetrical to the rim. The shape of the shaft is continuously coated, and the plurality of layers are covered with different symmetrical angles to form a pre-shaped carbon fiber outer casing. The pre-shaped carbon fiber outer casing is coated on the outer side of the inner skeleton, and then heated and heated to complete the shape and shape. Carbon fiber composite rims.

In order to achieve the foregoing objects, the technical means utilized by the present invention is to provide a method for manufacturing a bicycle carbon fiber rim, the process comprising: preparing a pre-formed mold: preparing a pre-formed mold and a pre-auxiliary mold, the pre-form The mold has a closed annular shape, including a first surface on the inner side of the ring, a second surface that is planar with respect to the other side of the first surface, and the pre-shaped auxiliary mold a flat annular body for laminating against the second surface, the pre-auxiliary mold traversing the plurality of detachable pins along the entire circumference for setting one of the carbon fiber prepreg wires to one of the axial normals The angle is a U-shaped trajectory of the cross-section, and is wound on the first surface of the pre-molding mold and the two sides of the pre-type auxiliary mold, and the carbon fiber prepreg wire is hung at the set angle For each of the pins, the carbon fiber prepreg wire is suspended for directional winding; the pre-molding mold is separated from the pre-type auxiliary mold, and the pre-type auxiliary mold is removed, and the carbon fiber is removed. The prepreg wire is defined as a folding edge at least the total length of the pin to the second surface, and the folding edges of the two sides are folded inwardly toward the second surface, and then peeled off from the preform mold. Forming a pre-shaped carbon fiber outer casing, the pre-shaped carbon fiber outer casing forming a groove-shaped inner chamber; combining the inner skeleton: providing an inner skeleton such as a rim, the inner chamber of the pre-form carbon fiber outer casing and the folding edge Adhering to the outer side of the inner skeleton; molding curing: the inner skeleton is combined with the pre-shaped carbon fiber outer casing to be cured by pressure heating A rim formed into a carbon fiber composite.

In order to achieve the foregoing objects, the technical means utilized by the present invention is to provide a bicycle carbon fiber rim product comprising: an inner skeleton which is a ring body in a shape of a quasi-rim; and a pre-shaped carbon fiber casing, at least Covering a part of the outer peripheral side of the inner frame, the pre-formed carbon fiber outer casing is continuously wound by a set angle of one of the carbon fiber prepreg wires relative to the axial normal line, and the number of the carbon fiber prepreg wire coating layers is at least two Layer, the winding angle of each layer is staggered.

Therefore, in accordance with the technical means of the present invention, a brief description of the functions that can be obtained by the present invention is as follows:

1. The present invention is characterized in that an inner lining is coated with an uncured pre-formed carbon fiber outer casing, and a pre-formed carbon fiber outer casing is prepared by first replacing a pre-form and a pre-auxiliary mold, and in the pre-form and the pre-auxiliary mold. On the outer side, a U-shaped cross section is taken, and the carbon fiber prepreg wire is continuously wound at a point where the hanging pin is a winding angle. It is worth mentioning that the pre-formed auxiliary mold is stacked on the pre-formed mold, and the pre-type auxiliary mold can be replaced with a plurality of pre-type auxiliary molds of different thickness according to different specifications of the manufactured rim, so that the pre-auxiliary auxiliary The height difference between the pin of the die and the first surface of the pre-formed die is controlled to control the length of the folded edge of the preformed carbon fiber casing, and the method of the present invention can be provided in a breakthrough manner according to the different areas of the inner frame. An accurate, efficient, fast and easy method to manufacture rims containing different specifications such as tubeless and tube.

2. The present invention is characterized in that an inner lining is coated with an uncured pre-formed carbon fiber outer casing, and a pre-formed carbon fiber outer casing is prepared by first replacing a pre-form and a pre-auxiliary mold, and in the pre-form and the pre-auxiliary mold. The outer side is a U-shaped cross section, and the carbon fiber prepreg wire is continuously wound at a point where the hanging pin is a winding angle. Since each carbon fiber prepreg wire is wound at each layer, it is symmetrical to the opposite wheel. The axis of the circle, and the angles of the carbon fiber dip material units of each layer are staggered, so the carbon fiber composite material has the continuous fiber condition, the staggered arrangement of the different fiber directions of the carbon fiber layers, and the carbon fiber multi-layer coating method can effectively complement the different Directional mechanical strength, allowing the rim to be in the radial annular surface And the section can have good strength.

3. The invention is coated on the outer side of the inner frame in the pre-formed carbon fiber outer casing, and the carbon fiber material and the inner skeleton of the metal or carbon fiber composite material are combined and mutually reinforced, for example, the toughness is increased or the weight is increased.

4. The method of the invention has the advantages of simple method and low cost, and the shape of the rim is more precise. Since the pre-formed carbon fiber outer shell is wrapped on the outer side of the inner frame, it is not attached to the mold, so the shape has high controllability and precision. .

5. The invention inserts the number of pin members equidistantly in the pre-type auxiliary mold, and provides the carbon fiber pre-dip wire with the pin as the fulcrum for the directional winding, so the winding angle can be accurate, fast and extremely efficient.

(10) ‧‧‧Preformed mould

(11) ‧ ‧ first side

(12) ‧‧‧ second side

(13) ‧‧‧ outside

(20) ‧‧‧Preformed auxiliary mode

(21) ‧‧‧ first side

(211)‧‧‧ second side

(22) ‧‧‧ third side

(221) ‧‧‧ fourth side

(23)‧‧‧ jack

(25) (251) (252) ‧ ‧ sales

(30) (301)‧‧‧ Carbon fiber prepreg wire

(40) (401) ‧‧‧Prefabricated carbon fiber casing

(400) ‧ ‧ interior room

(41)(42)(43)‧‧‧

(50) (60) ‧‧‧ skeleton

(51) (61) ‧ ‧ body

(52) ‧ ‧ inner hook

(62) ‧‧‧ bumps

The first figure is a block diagram of a preferred embodiment of the present invention.

The second drawing is an exploded perspective view of a preformed mold flow in accordance with a preferred embodiment of the present invention.

The third drawing is a perspective view of a carbon fiber prepreg wire according to a preferred embodiment of the present invention.

The fourth drawing is an enlarged plan view of a carbon fiber prepreg wire in which a winding preform is completed in accordance with a preferred embodiment of the present invention.

The fifth drawing is an enlarged perspective view of a carbon fiber prepreg wire according to a preferred embodiment of the present invention.

Figure 6 is a perspective view of the second carbon fiber prepreg wire of the preferred embodiment of the present invention.

Figure 7 is an enlarged plan view showing the winding of a second carbon fiber prepreg wire according to a preferred embodiment of the present invention.

Figure 8 is a cross-sectional view showing the winding of a carbon fiber prepreg wire according to a preferred embodiment of the present invention.

The ninth drawing is a cross-sectional action diagram (1) of the preformed carbon fiber outer casing of the preferred embodiment of the present invention to be separated from the preform mold.

The tenth figure is a cross-sectional action diagram (2) of the preformed carbon fiber outer casing of the preferred embodiment of the present invention to be separated from the preform mold.

The eleventh figure is a cross-sectional action diagram (3) of the preformed carbon fiber outer casing of the preferred embodiment of the present invention to be separated from the preform mold.

Figure 12 is a pre-formed carbon fiber casing of the preferred embodiment of the present invention completely detached from the pre-preparation Sectional action diagram of the mold (4).

Figure 13 is a cross-sectional view showing a preformed carbon fiber outer casing in combination with an inner skeleton formed into a rim according to a preferred embodiment of the present invention.

Figure 14 is a cross-sectional view showing a preformed carbon fiber outer casing in combination with an inner skeleton formed into another rim according to another preferred embodiment of the present invention.

Fig. 15 is a cross-sectional view showing a preformed carbon fiber outer casing combined with an inner skeleton formed into a further rim according to still another preferred embodiment of the present invention.

The invention relates to a bicycle carbon fiber rim manufacturing method and a product thereof. As shown in the first and second figures, the manufacturing process of the invention is as follows:

a pre-formed mold: as shown in the first and second figures, a pre-formed mold (10) and a pre-formed auxiliary mold (20) are provided, wherein the pre-formed mold (10) is a solid, quasi-rim type If the rim is prepared for the tubular tire type, the preform mold (10) is formed into a hollow rim shape such as a tubular tire type, and the preform mold (10) includes a curved inner portion and an arc shape. One side (11), the other side of the first side (11) is a planar second surface (12), the first and the second sides (11) (12) are the outer side (13), and the pre- The auxiliary mold (20) is a flat annular body, and the thickness of the pre-auxiliary mold (20) can be changed according to the specifications of the rim to be produced. The pre-auxiliary mold (20) comprises two first and two sides (21) which are symmetrical to each other (21) 211), the radial width of the first and second sides (21) (211) corresponds to the radial width of the second face (12) of the preform mold (10), and the outer sides of the first and second sides (21) (211) , means that the preformed auxiliary mold (20) forms a thickness on both sides of the third side (22), the fourth side (221), and the third and fourth sides (22) (221) along the pre-auxiliary mold (20) The full circumference is equally divided into a plurality of insertion holes (23), and each of the insertion holes (23) is detachably fitted with a pin member (25).

b. Covering the pre-formed carbon fiber outer casing: replacing the carbon fiber material of the prepreg epoxy resin, and cutting the prepreg material into the carbon fiber prepreg wire (30) in the form of wire, and the carbon fiber prepreg wire (30) coating type Please refer to the second, third and fourth figures: firstly, the first side (21) of the pre-formed auxiliary mold (20) is placed on the second surface (12) of the pre-formed mold (10); Then, the pin members (25) are inserted into the respective insertion holes (23) of the pre-auxiliary mold (20) one by one; finally, the pre-molding mold (10) and the pre-auxiliary mold are coated with the carbon fiber prepreg wire (30). (20), as shown in the third, fourth, and fifth figures, is continuously wound at a set angle with respect to the normal axis of the pre-formed mold (10), and is wound in the shape of a U-shaped cross section, and is wound around the pre-formed mold. (10) The first face (11) and the third and fourth sides (22) (221) of the pre-auxiliary die (). Firstly, setting the angle of the carbon fiber prepreg wire (30) is the basis for setting the angle of the pin (25), and the carbon fiber prepreg wire (30) is provided with the pin (25) as a fulcrum. A directional winding action makes the winding operation fast and accurate. That is, the carbon fiber prepreg wire (30) is supported by the pin member (25) with a number of pin members (25) as a spacer, and based on this, the carbon fiber prepreg wire (30) is waved back and forth. On the left and right third and fourth sides (22) (221) of the pre-auxiliary mold (20), the pre-molding mold (10) and the pre-auxiliary mold (20) are repeatedly wound; for example, carbon fiber prepreg wire (30) One end begins to wrap around the first side (11) and the outer side (13) of the bottom of the preform mold (10) → is wound up at a specific angle to hang on the third side of the pre-auxiliary mold (20). (22) a pin (25) → down and reversely affixed to the first side (11), the outer side (13) of the bottom of the preform mold (10) → upwards to a specific angle, extending to the pre- The fourth side (221) of the auxiliary mold (20) is suspended from the pin member (251), and the pin member (251) is spaced apart from the pin member (25) on the third side by a certain interval → downward and reverse Wrap around the first side (11) and the outer side (13) of the bottom of the pre-formed mold (10) → extend upward to a specific angle to the pre-pre a third side (22) of the auxiliary mold (20), on which a further pin (25) is mounted at the same distance from the aforementioned pin member (251), and thus wound upside down until the preform mold (10) The first carbon fiber prepreg wire (30) is coated on the entire circumference of the pre-auxiliary mold (20); when the second carbon fiber prepreg wire (301) is wound, as shown in the sixth and seventh figures, In the same manner as described above, the outer sides (13) of the left and right sides of the preform mold (10), and the third and fourth sides (22) (221) of the left and right sides of the preform auxiliary mold (20) are intertwined, and Hanging on the same spacing pin (252), but the hanging position is adjacent to the position of the first carbon fiber prepreg wire (30) hanging pin (25), staggered from the first carbon fiber prepreg The position of the wire (30) is reversed, and the third and fourth carbon fiber prepreg wires are wrapped around the pre-molding mold (10) and the pre-shaped auxiliary mold (20); the winding manner and the angle can be changed, such as The mold (10) and the pre-type auxiliary mold (20) are covered with a carbon fiber prepreg wire (30) throughout the ring shape, and then can be repeatedly wound and wound at an angular position different from the aforementioned hanging member (25). Multi-layer, carbon fiber Dip wires (30) of the winding angle, can change the number of layers, each layer of the winding angle is reversed or different.

c. Leaving the pre-formed mold: Please refer to the seventh, eighth and ninth diagrams, and winding several carbon fiber prepreg wires (30) (301) on the outer peripheral side of the pre-formed mold (10) and the pre-formed auxiliary mold (20). After winding the pre-formed carbon fiber outer casing (40), it is necessary to remove the pre-formed carbon fiber outer casing (40) from the pre-formed mold (10) and the pre-formed auxiliary mold (20); and pull the respective pin members (25) away from The jack (23) continues to be detached from the second side (12) of the pre-formed mold (10) as shown in the tenth and eleventh figures, so The carbon fiber outer casing (40) has a height higher than the second surface (12) of the pre-formed mold (10), and the total height is defined as a folding edge (41), and the folding edge (41) is turned inward. The two sides (12) are folded in the direction and superposed on the second side (12) of the pre-formed mold (10); as shown in the twelfth figure, the two sides of the pre-formed carbon fiber casing (40) are evenly and carefully The two outer sides (13) of the pre-formed mold (10) are peeled off to form a pre-shaped carbon fiber outer casing (40) which is separated from the pre-formed mold (10) and has a U-shape. The pre-formed carbon fiber outer casing (40) is formed therein. A groove-shaped inner chamber (400).

d. Combining the inner skeleton: Please refer to the thirteenth figure. When the rim with the inner tube is to be made, the pre-formed carbon fiber outer casing (40) is pre-applied and bonded to the inner side of the inner skeleton (50) before being introduced into the mold. The inner skeleton (50) is a ring frame made of aluminum or carbon fiber composite material according to a rim having a tube form, and the shape and a section thereof are like a rim having a tube, so the inner skeleton (50) is hollow. The inner body (52) of the ring body (51) and the two top ring bodies (51) are integrally extended outwardly (52), and the inner hook edge (52) extends outward, so that the top surface of the ring body (51) is high. Therefore, the inner chamber (400) of the pre-formed carbon fiber casing (40) is coated on the outer surface of the ring body (51) of the inner skeleton (50), and the inner skeleton (50) is covered by the inner chamber (400), and is folded. The edge (41) is placed flush with the outer end of the inner hook edge (52) along the surface of the ring body (51).

e. Molding and curing: After the inner skeleton (50) is combined with the pre-formed carbon fiber outer casing (40), the mold is placed together in a mold for pressure heating, so that the preformed carbon fiber outer casing (40) can be solidified in combination with the inner skeleton (50). After the mold is removed from the mold, the rim of the carbon fiber composite material is completed.

In addition, in the embodiment shown in Fig. 14, if the rim is made of a tubeless tube, the folding edge (42) of the pre-formed carbon fiber casing (401) needs to be long, and in the process of preparing the pre-formed mold, To select another pre-formed auxiliary die (20) of thicker gauge, at least the total height of the pin (25) of the pre-formed die (20) and the first face (11) of the preform (10) is This defines a conformity to produce a longer folding edge (42). The inner skeleton (60) here is a hollow and annular ring body (61), and a convex portion (62) is protruded from the center of the outer ring side, and the protrusion (62) can be used for the pre-formed carbon fiber outer casing ( 401) is applied along the surface of the ring body (61) such that the edge of the folded edge (42) abuts against the outside of the protrusion (62), and the top surface is flush, and can be solidified into a carbon fiber composite material by pressure heating. Wheel.

Moreover, the fifteenth figure is a tubeless rim of another embodiment, and the rim type may not form the protrusion (62) as in the fourteenth figure in the inner frame (60), but only one Hollow ring shape, and the folded edge (43) of the preformed carbon fiber casing (40) is longer than that of the fourteenth figure. <The same as the foregoing, it is necessary to replace the pre-shaped auxiliary molds (20) of different thicknesses> The end edges of the two-folded edge (43) are in contact with each other, and the outer peripheral side of the entire inner frame (60) is closed and attached, and then heated under pressure to solidify the rim which is formed into a tubeless tube.

Therefore, the present invention is in accordance with different rim types of the inner tube and the inner tube, so that the carbon fiber prepreg wire (30) is wound around the preform mold (10) and the preform when the preformed carbon fiber outer casing (40) is preformed. Above the auxiliary mold (20), the position height of the pin member (25) is inserted by the pre-type auxiliary mold (20), and the total height region of the second surface (12) outside the pre-molding mold (10) is changed into a pre-form Carbon fiber casing (40) forms a folding edge (41) (42) (43) and other lengths, the industry can match the different rim patterns of the inner tube and the tubeless tube to change the pre-formed carbon fiber casing (40), which is convenient, fast and accurate.

The above embodiments are merely illustrative of the technology of the present invention and its effects, and are not intended to limit the present invention. Any person skilled in the art can modify and change the above embodiments without departing from the technical spirit and spirit of the present invention. Therefore, the scope of protection of the present invention should be as listed in the patent application scope mentioned later. .

(10) ‧‧‧Preformed mould

(11) ‧ ‧ first side

(12) ‧‧‧ second side

(13) ‧‧‧ outside

(20) ‧‧‧Preformed auxiliary mode

(21) ‧‧‧ first side

(211)‧‧‧ second side

(22) ‧‧‧ third side

(221) ‧‧‧ fourth side

(25)‧‧‧ Pins

(30)‧‧‧Carbon fiber prepreg wire

(40) ‧‧‧Prefabricated carbon fiber casing

(400) ‧ ‧ interior room

(41) ‧‧‧

Claims (4)

The invention relates to a method for manufacturing a bicycle carbon fiber rim, the process comprising: preparing a pre-formed mold: preparing a pre-formed mold and a pre-formed auxiliary mold, the pre-formed mold having a closed ring shape, comprising a first surface on the inner side of the ring, opposite to the The other side of the first side is a planar second surface, and the pre-auxiliary mold is a flat annular body for abutting against the second surface, the pre-auxiliary mold traversing the entire circumference a plurality of detachable pins for setting an angle of one of the carbon fiber prepreg wires with respect to one of the axis normals, and having a U-shaped cross section, wound around the first face of the preform mold and the pre-auxiliary mold On both sides, the carbon fiber prepreg wire is hung at the set angle, that is, the pin member is suspended at the position, and each of the pin members is hanged for each of the carbon fiber prepreg wires to be directionally wound; The pin member is detached from the pre-type auxiliary mold, and the carbon fiber prepreg wire is defined as a folding edge at least the total length of the pin member to the second surface, and the two sides of the pin Folding the edge to the second side and then peeling off the preform mold to form a pre-formed carbon a fiber casing, the inside of the prefabricated carbon fiber casing forms a groove-shaped inner chamber; and the inner frame is combined with an inner frame in the form of a rim, the inner chamber of the prefabricated carbon fiber casing and the folding edge abut the Outside of the inner skeleton; molding and curing: the inner skeleton is combined with the preformed carbon fiber outer casing to be solidified into a rim of carbon fiber composite by pressure heating. The method for manufacturing a bicycle carbon fiber rim according to claim 1, wherein the carbon fiber prepreg wire is in a process of coating a pre-formed carbon fiber casing, and the carbon fiber prepreg wire can be repeatedly Winding at least two or more layers, the winding angle of each layer of the carbon fiber prepreg wire is different. The method for manufacturing a bicycle carbon fiber rim according to claim 1, wherein the pre-formed mold is a solid, quasi-rim type, and the pre-auxiliary mold comprises two first and two sides symmetric with each other. The radial widths of the first and second sides correspond to the radial width of the second surface of the pre-formed mold, and the outer sides of the first and second sides are respectively the third and fourth sides, and the third and fourth sides are equally divided into the transverse direction. Jacks, each of which can be detachably worn with a pin. A bicycle carbon fiber rim product comprising: an inner skeleton which is a ring body in a shape of a quasi-rim; and a pre-shaped carbon fiber outer casing covering at least a portion of an outer peripheral side of the inner bobbin, the pre-shaped carbon fiber outer casing The carbon fiber prepreg wire is continuously wound with respect to one of the axial normal lines, and the number of the carbon fiber prepreg wire coating layers is at least two layers, and the winding angles of the layers are staggered.