Carbon fiber wheel rim molding method and carbon fiber wheel rim mold

Abstract

The invention discloses a carbon fiber rim forming method and a carbon fiber rim mold, and relates to the technical field of bicycles, wherein the carbon fiber rim forming method comprises: obtaining a wheel rim profiling part, pasting material on the wheel rim profiling part to obtain a wheel rim; obtaining a wheel rim body profiling part, pasting material on the wheel rim body profiling part to obtain a 2 / 3 wheel rim body; obtaining a lower mold, placing the 2 / 3 wheel rim body into the lower mold and taking out the wheel rim body profiling part; pasting material on the upper mold to obtain a 1 / 3 wheel rim body; splicing one side of the wheel rim to the 2 / 3 wheel rim body; obtaining an air bag, placing the air bag between the wheel rim and the 2 / 3 wheel rim body; closing the upper mold with the lower mold so that the 1 / 3 wheel rim body and the 2 / 3 wheel rim body are spliced ​​to obtain the wheel rim body; preforming the air bag by blowing, opening the upper mold and the lower mold, and obtaining a wheel rim rough blank. In the technical solution provided by the invention, the first forming of a part of the wheel rim body and then splicing the wheel rim, and finally splicing the other part of the wheel rim body by closing the mold, ensures accurate positioning and improves the product qualification rate.

Description

Technical Field

[0001] The invention relates to the technical field of bicycles, and in particular to a carbon fiber rim molding method and a carbon fiber rim mold. Background Art

[0002] The production process of carbon fiber rims is a high-tech process, which usually includes the following key steps: first, high-performance carbon fiber materials are cut according to the designed shape and size of the rim; then, the cut carbon fiber strips are laid manually or placed accurately in the mold using automated equipment to form the initial structure of the rim; then, a special resin is used to bond the carbon fiber strips together, and the resin is hardened through a high-temperature and high-pressure curing process to enhance the bonding strength of the carbon fiber layer and the structural stability of the entire rim; then, the cured rim is polished and shaped to ensure that the rim edge is smooth and the size is accurate; finally, the rim center, spokes, bearings and other components are installed to complete the assembly of the rim.

[0003] The wheel rim is divided into two parts: the wheel rim body and the wheel rim. Please refer to the attached figure of the instruction manual. Figure 1 In the related technology, engineers usually adopt the method of mold-coiling to produce the wheel rim body, that is, the wheel rim body is divided into two parts along the center line, and the two sides of the wheel rim body are formed in the upper mold and the lower mold respectively, and then the upper mold and the lower mold are molded together, and an air bag is placed in the middle of the wheel rim body for blowing preform, and the air bag is removed to manually splice the wheel rim prepreg and the wheel rim body for pressure-maintaining molding.

[0004] Using the above-mentioned forming method, the rim and the rim body are assembled by manual splicing. Both ends of the rim need to be spliced ​​with the two inner sides of the rim body. When one side is positioned, it will block the positioning line of sight of the other side, making it impossible to position it, resulting in large deviations between some rim bodies and rims, and a low product qualification rate. Summary of the invention

[0005] The main purpose of the present invention is to propose a carbon fiber rim molding method and a carbon fiber rim mold, aiming to provide a carbon fiber rim molding method with high product qualification rate by accurately splicing the rim body and the rim.

[0006] To achieve the above object, the carbon fiber rim forming method proposed in the present invention comprises:

[0007] Obtaining a wheel rim profiling piece, and pasting material on the wheel rim profiling piece to obtain a wheel rim;

[0008] Obtaining a wheel rim body profiling piece, and pasting material on the wheel rim body profiling piece to obtain 2 / 3 of the wheel rim body;

[0009] Obtain a lower die, place the 2 / 3 wheel rim body into the lower die and take out the wheel rim body profiling piece;

[0010] Obtain an upper mold, and paste material on the upper mold to obtain 1 / 3 of the rim body;

[0011] Splicing one side of the wheel rim to the 2 / 3 wheel rim body;

[0012] Obtain an air bag, and place the air bag between the wheel rim and the 2 / 3 wheel rim body;

[0013] The upper mold and the lower mold are molded together to splice the 1 / 3 wheel rim body and the 2 / 3 wheel rim body to obtain the wheel rim body;

[0014] The airbag is blown to preform, and the upper mold and the lower mold are opened to obtain a rough blank of the wheel rim.

[0015] In one embodiment, the step of obtaining the wheel rim body profiling piece and pasting material on the wheel rim body profiling piece to obtain the 2 / 3 wheel rim body further comprises the following steps:

[0016] Identify the two outer ends and the bottom of the wheel rim body contour piece;

[0017] A 2 / 3 wheel rim body is obtained by pasting material on the wheel rim body profiling piece and ensuring that the material covers one of the outer end portions and the bottom.

[0018] In one embodiment, the step of obtaining a lower mold, placing the 2 / 3 wheel rim body into the lower mold, and taking out the wheel rim body profiling piece further comprises the following steps:

[0019] Obtain a first lower die, wherein the first lower die is provided with a snap ring groove;

[0020] Obtain a second lower mold, wherein the second lower mold is provided with a clamping protrusion, and splice the second lower mold with the first lower mold;

[0021] The 2 / 3 wheel rim body is placed in the space enclosed by the first lower mold and the second lower mold.

[0022] In one embodiment, the step of splicing one side of the wheel rim to the 2 / 3 wheel rim body further includes the following steps:

[0023] Confirm that one end of the 2 / 3 wheel rim body is the splicing position of the wheel rim;

[0024] The wheel rim is spliced ​​at the splicing position.

[0025] In one embodiment, the step of closing the upper mold with the lower mold so as to splice the 1 / 3 wheel rim body with the 2 / 3 wheel rim body to obtain the wheel rim body further comprises the following steps:

[0026] Confirming the outer peripheral position of the second lower mold and the inner peripheral position of the upper mold;

[0027] When the upper mold and the lower mold are closed, it is ensured that the outer peripheral position of the second lower mold is in contact with the inner peripheral position of the upper mold.

[0028] In one embodiment, after obtaining the wheel rim profiling member and pasting material on the wheel rim profiling member to obtain the wheel rim, the following steps are also included:

[0029] Confirm the bottom of the wheel rim body profiling piece, and stick a U-shaped strip material on the bottom of the wheel rim body profiling piece;

[0030] The partial structure of the 2 / 3 wheel rim body is in contact with the U-shaped strip material.

[0031] In one embodiment, the airbag is blown to preform, and the upper mold and the lower mold are opened to obtain a rough blank of the rim, including the following steps:

[0032] The airbag blowing preform;

[0033] Heating the upper mold and the lower mold, and maintaining pressure on the upper mold and the lower mold;

[0034] After the upper mold and the lower mold are cooled, the upper mold and the lower mold are opened.

[0035] In one embodiment, after the airbag is blown to preform, the upper mold and the lower mold are opened to obtain a rough blank of the rim, the following steps are also included:

[0036] Grinding the rough wheel rim to remove surface burrs;

[0037] The rough rim is painted.

[0038] The present invention also provides a carbon fiber wheel rim mold, comprising a wheel rim profiling part, a wheel rim body profiling part, a lower mold, an upper mold and an airbag, wherein the lower mold comprises a detachable first lower mold and a second lower mold, and the upper mold is clamped on the second lower mold.

[0039] In one embodiment, the second lower mold includes a plurality of arc-shaped pieces, and the plurality of arc-shaped pieces are sequentially connected end to end.

[0040] The technical solution of the present invention provides a carbon fiber wheel rim molding method and a carbon fiber wheel rim mold, wherein the carbon fiber wheel rim molding method first obtains a wheel rim profiling piece, the wheel rim profiling piece is formed with a profiling surface identical to the wheel rim shape, and the wheel rim is obtained by pasting material on the wheel rim profiling piece; then a wheel rim body profiling piece is obtained, and 2 / 3 of the wheel rim body is obtained by pasting material on the wheel rim body profiling piece in the same way; at this time, the 2 / 3 of the wheel rim body obtained in the previous step is placed in a lower mold, the wheel rim body profiling piece is taken out, and then the other 1 / 3 of the wheel rim is obtained by pasting material on the upper mold. The main body is then spliced ​​with one side of the rim obtained in the previous step to the 2 / 3 wheel rim body. Since only one side of the rim needs to be positioned during the splicing process, accurate splicing can be achieved. Then, the upper mold and the lower mold are closed to make the other 1 / 3 wheel rim body spliced ​​with the 2 / 3 wheel rim body and the rim. Since the upper mold and the lower mold can be accurately positioned and closed during splicing, the 1 / 3 wheel rim and the 2 / 3 wheel rim body and the rim can all be accurately spliced. Finally, the airbag placed inside the wheel rim is blown to pre-form the wheel rim, and then the mold is opened to obtain the rough wheel rim. In the above wheel rim forming process, the large splicing positioning error of the wheel rim and the wheel rim body is avoided by first forming the wheel rim body and then splicing the rim. The method of first forming part of the wheel rim body and then splicing the rim is adopted, and finally the other part of the wheel rim body is spliced ​​by closing the mold, which ensures accurate positioning and improves the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0042] Figure 1 A schematic diagram of the steps of the carbon fiber rim molding method provided by the present invention;

[0043] Figure 2 A schematic diagram of the structure of a carbon fiber wheel rim mold provided by the present invention;

[0044] Figure 3 This is a schematic structural diagram of the carbon fiber rim mold provided by the present invention from another angle;

[0045] Figure 4 for Figure 2 A cross-sectional view of the middle wheel rim body profiling member;

[0046] Figure 5 This is a schematic diagram of the internal structure of the rough rim;

[0047] Figure 6 This is a process flow chart of the carbon fiber rim molding method provided by the present invention.

[0048] Description of Figure Numbers:

[0049] 1000, carbon fiber rim mold; 1, rim profiling part; 11, rim profiling surface; 2, rim body profiling part; 21, rim body profiling surface; 211, outer end; 212, bottom; 3, lower mold; 31, first lower mold; 32, second lower mold; 321, arc-shaped piece; 4, upper mold; 5, airbag; 51, air inlet nozzle; 1a, rim; 2a, rim body; 2a1, 2 / 3 rim body; 2a2, 1 / 3 rim body; 2b, cavity; 3a, U-shaped strip material.

[0050] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0053] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0054] The production process of carbon fiber rims is a high-tech process, which usually includes the following key steps: first, high-performance carbon fiber materials are cut according to the designed shape and size of the rim; then, the cut carbon fiber strips are laid manually or placed accurately in the mold using automated equipment to form the initial structure of the rim; then, a special resin is used to bond the carbon fiber strips together, and the resin is hardened through a high-temperature and high-pressure curing process to enhance the bonding strength of the carbon fiber layer and the structural stability of the entire rim; then, the cured rim is polished and shaped to ensure that the rim edge is smooth and the size is accurate; finally, the rim center, spokes, bearings and other components are installed to complete the assembly of the rim.

[0055] The wheel rim is divided into two parts: the wheel rim body and the wheel rim. Please refer to the attached figure of the instruction manual. Figure 1 In the related technology, engineers usually adopt the method of mold-coiling to produce the wheel rim body, that is, the wheel rim body is divided into two parts along the center line, and the two sides of the wheel rim body are formed in the upper mold and the lower mold respectively, and then the upper mold and the lower mold are molded together, and an air bag is placed in the middle of the wheel rim body for blowing preform, and the air bag is removed to manually splice the wheel rim prepreg and the wheel rim body for pressure-maintaining molding.

[0056] Using the above-mentioned forming method, the rim and the rim body are assembled by manual splicing. Both ends of the rim need to be spliced ​​with the two inner sides of the rim body. When one side is positioned, it will block the positioning line of sight of the other side, making it impossible to position it, resulting in large deviations between some rim bodies and rims, and a low product qualification rate.

[0057] In order to solve the above problems, the present invention proposes a carbon fiber rim molding method and a carbon fiber rim mold, aiming to provide a carbon fiber rim molding method with accurate splicing of the rim body and the rim, thereby achieving a high product qualification rate. Figures 1 to 6 A structural schematic diagram of an embodiment of a carbon fiber rim molding method provided by the present invention.

[0058] Please refer to Figures 1 to 6 The present invention provides a carbon fiber rim molding method, comprising obtaining a rim profiling part 1, pasting material on the rim profiling part 1 to obtain a rim; obtaining a rim body profiling part 2, pasting material on the rim body profiling part 2 to obtain a 2 / 3 rim body 2a1; obtaining a lower mold, placing the 2 / 3 rim body 2a1 into the lower mold and taking out the rim body profiling part 2; obtaining an upper mold, pasting material on the upper mold 4 to obtain a 1 / 3 rim body 2a2; splicing one side of the rim to the 2 / 3 rim body 2a1; obtaining an airbag 5, placing the airbag 5 between the rim and the 2 / 3 rim body 2a1; closing the upper mold 4 with the lower mold so that the 1 / 3 rim body 2a2 and the 2 / 3 rim body 2a1 are spliced ​​to obtain the rim body; blowing the airbag 5 for preforming, opening the upper mold 4 and the lower mold to obtain a rough rim blank.

[0059] The technical solution of the present invention provides a carbon fiber wheel rim molding method and a carbon fiber wheel rim mold 1000, wherein the carbon fiber wheel rim molding method first obtains a wheel rim profiling part 1, the wheel rim profiling part 1 is formed with a profiling surface identical to the wheel rim shape, and the wheel rim is obtained by pasting material on the wheel rim profiling part 1; then a wheel rim body profiling part 2 is obtained, and 2 / 3 of the wheel rim body 2a1 is obtained by pasting material on the wheel rim body profiling part 2 in the same manner; at this time, the 2 / 3 of the wheel rim body 2a1 obtained in the previous step is placed in the lower mold and the wheel rim body profiling part 2 is taken out, and then the other 1 / 3 of the wheel rim is obtained by pasting material on the upper mold 4 The main body 2a2 is then spliced ​​with one side of the rim obtained in the previous step to the 2 / 3 wheel rim main body 2a1. Since only one side of the wheel rim needs to be positioned during the splicing process, accurate splicing can be achieved. Then, the upper mold 4 and the lower mold are molded together so that the other 1 / 3 wheel rim main body 2a2 is spliced ​​with the 2 / 3 wheel rim main body 2a1 and the wheel rim. Since the upper mold 4 and the lower mold can be precisely positioned and molded together during splicing, the 1 / 3 wheel rim and the 2 / 3 wheel rim main body 2a1 and the wheel rim can all be accurately spliced. Finally, the air bag 5 placed inside the wheel rim is blown to preform the wheel rim, and then the mold is opened to obtain the wheel rim rough blank. In the above wheel rim forming process, it is avoided that the wheel rim and the wheel rim are spliced ​​together with a large positioning error. The method of first forming a part of the wheel rim main body and then splicing the wheel rim is adopted, and finally the other part of the wheel rim main body is spliced ​​together by the mold-matching method, which ensures accurate positioning and improves the product qualification rate.

[0060] After obtaining the wheel rim body profiling part 2, the 2 / 3 wheel rim body 2a1 is obtained by pasting the material on the wheel rim body profiling part 2. This step specifically includes the following steps: first, confirm the two outer ends 211 and the bottom 212 of the wheel rim body profiling part 2. Specifically, please refer to Figure 4 The two outer ends 211 of the wheel rim body profiling part 2 are respectively located at the edge of the outer peripheral wall of the wheel rim body profiling part 2, and the bottom 212 is located at the inner peripheral wall of the wheel rim body profiling part 2. After confirming the positions of the outer ends 211 and the bottom 212, the wheel rim body profiling part 2 is pasted with materials. The materials are generally cut carbon cloth. Carbon cloth, also known as carbon fiber cloth, is a high-performance composite material woven or laminated by carbon fiber filaments. It is widely used in the production of carbon fiber bicycles for its excellent high strength, high rigidity, light weight and corrosion resistance. Carbon cloth has the characteristics of high strength, high modulus, light weight and corrosion resistance. The carbon cloth is wrapped around the circumference of the wheel rim body profiling part 2 until a circle is fully pasted. During the pasting process, it is necessary to ensure that the carbon cloth covers one of the outer ends 211 and the bottom 212 at the same time. In specific production practice, 2 / 3 width of carbon cloth is usually cut as raw material according to the required carbon cloth width of the rim body. Considering that the carbon cloth may shrink during a series of processing operations, the actual width of the carbon cloth can also be appropriately increased to meet the production requirements, thereby producing a 2 / 3 rim body 2a1. For details, please refer to Figure 6 , step three shown in the figure is the 2 / 3 wheel rim body 2a1.

[0061] After obtaining the lower mold, placing 2 / 3 of the wheel rim body 2a1 into the lower mold and taking out the wheel rim body profiling member 2 specifically includes the following steps: firstly, obtaining the first lower mold 31, specifically, please refer to Figure 2 The first lower mold 31 is provided with a snap ring groove; then the second lower mold 32 is obtained, and the second lower mold 32 is provided with a snap protrusion. The first lower mold 31 and the second lower mold 32 are spliced ​​by the cooperation of the snap ring groove and the snap protrusion. The second lower mold 32 is formed by connecting multiple arc-shaped pieces 321 end to end. For details, please refer to Figure 3 When opening the mold, the second lower mold 32 can be removed in pieces to avoid mold pulling due to a certain curvature of the bottom 212; then, the 2 / 3 rim body 2a1 is placed in the space enclosed by the first lower mold 31 and the second lower mold 32. Since the first lower mold 31 and the second lower mold 32 are spliced ​​to form a circumferential surface that fits the outer circumferential surface of the 2 / 3 rim body 2a1, the support for the 2 / 3 rim body 2a1 can be guaranteed.

[0062] The steps of splicing one side of the rim to the 2 / 3 wheel rim body 2a1 specifically include the following steps: first confirm that one end of the 2 / 3 wheel rim body 2a1 is the splicing position of the rim. Figure 5 and Figure 6 As can be seen from the figure, the upper end of the rim is flush with the upper end of the rim body, which can be used as a reference point to assemble the rim and the 2 / 3 rim body 2a1. In this way, since the 2 / 3 rim body 2a1 is fixed on the lower mold, the positioning reliability of the 2 / 3 rim body 2a1 as a reference point can be guaranteed. First, the 2 / 3 rim body 2a1 is positioned and a reference point is found on the 2 / 3 rim body 2a1 to assemble the rim. The advantage of this method is that it improves the accuracy and repeatability of assembly. By using the positioning component as a stable foundation, the assembly position of the subsequent components can be ensured to be accurate, thereby ensuring the symmetry and balance of the entire rim structure. In addition, this method simplifies the assembly process, reduces the errors and deviations that may occur during the assembly process, and improves production efficiency. The use of reference points also helps to achieve standardized production, which is convenient for quality control and subsequent maintenance work. In short, this assembly method lays a solid foundation for the stability and durability of the bicycle rim by ensuring the accurate relative position between components.

[0063] The closing operation of the upper mold 4 and the lower mold specifically includes the following steps: first confirm the outer peripheral position of the second lower mold 32 and the inner peripheral position of the upper mold 4; when the upper mold 4 and the lower mold are closed, ensure that the outer peripheral position of the second lower mold 32 abuts against the inner peripheral position of the upper mold 4, so that the upper mold 4 and the lower mold can enclose and form a cavity of the rim body. When the 1 / 3 rim body 2a2 and the 2 / 3 rim body 2a1 are spliced, the lower mold has a guiding effect on the upper mold 4, which can ensure the docking accuracy of the 1 / 3 rim body 2a2 and the 2 / 3 rim body 2a1, and improve the product qualification rate.

[0064] In one embodiment of the present invention, in order to enhance the structural strength and durability of the wheel rim, the bottom 212 of the wheel rim body is thickened. Figure 5 The specific manufacturing method is as follows: first confirm the bottom 212 of the wheel rim body profiling part 2, and paste the U-shaped strip material on the bottom 212 of the wheel rim body profiling part 2; then fit the partial structure of 2 / 3 wheel rim body 2a1 with the U-shaped strip material to form a whole. The bottom 212 of the wheel rim body is the part where the spokes are connected to the wheel rim, which needs to withstand the tension from the spokes and various stresses during riding. The thickened design provides additional materials and support, which helps to disperse and absorb these forces and reduce the risk of wheel rim deformation or damage. In addition, this design can also improve the rigidity of the wheel rim, improve riding efficiency and performance, especially when riding at high speed or on rough roads, it can provide better stability and durability.

[0065] The airbag 5 is blown for preforming, and the upper mold 4 and the lower mold are opened to obtain the rough blank of the wheel rim, which specifically includes the following steps: the airbag 5 placed in the cavity 2b of the wheel rim is inflated to expand the airbag 5 to support the wheel rim body and the rim; then the upper mold 4 and the lower mold are heated, the upper mold 4 and the lower mold are pressure-maintained, and the upper mold 4 and the lower mold are opened after the upper mold 4 and the lower mold are cooled. High temperature and high pressure molding is a key step in the production of carbon fiber wheel rims. It involves placing the mold with the carbon fiber cloth laid in an environment that can provide high temperature and high pressure (such as a pressure tank or a hot press). In this process, the temperature inside the mold is increased to a temperature sufficient to melt and flow the resin in the carbon fiber cloth, and the pressure applied ensures that the carbon fiber cloth and the resin are evenly combined and fill all the details of the mold. The purpose of this is to fully infiltrate the carbon fiber material with the resin and solidify it into the desired shape. At the same time, the high pressure helps to exhaust air and volatiles, reduce pores and defects in the finished product, and thus improve the overall strength and durability of the wheel rim. Through high temperature and high pressure molding, the structural integrity and performance of the rim can be ensured, meeting the high requirements of strength, rigidity and durability of bicycle rims in actual use.

[0066] After the mold is opened, the rough rim still has a lot of burrs. After the above steps, the rough rim needs to be polished to remove surface burrs, which is also called post-processing. Post-processing is an important part of ensuring product quality in the production of carbon fiber rims, mainly including trimming, polishing, inspection and other steps. First, the trimming process uses cutting tools to remove excess material from the edge of the rim to ensure that the outer dimensions of the rim meet the design requirements. Next, the polishing step uses manual or mechanical polishing tools to smooth the surface of the rim, remove any rough or uneven parts, improve the appearance and texture of the rim and reduce air resistance. Then, a detailed inspection is carried out, including visual inspection and possible mechanical performance testing, to ensure that the rim has no flaws, cracks or other defects. Finally, as needed, the rim may also undergo a coating or painting process to provide an additional layer of protection and a beautiful appearance. The entire post-processing process requires delicate operations and strict quality control to ensure that each rim meets high standards of finish and performance.

[0067] The present invention also proposes a carbon fiber rim mold 1000, which includes a wheel rim profiling part 1, a wheel rim body profiling part 2, a lower mold, an upper mold 4 and an airbag 5. The lower mold includes a detachable first lower mold 31 and a second lower mold 32. The upper mold 4 is clamped on the second lower mold 32. The specific structure of the carbon fiber rim mold 1000 refers to the above embodiment. Since the carbon fiber rim mold 1000 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0068] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A carbon fiber rim molding method, characterized in that: include: Obtaining a wheel rim profiling piece (1), and pasting material on the wheel rim profiling piece (1) to obtain a wheel rim; Obtaining a wheel rim body profiling piece (2), and pasting material on the wheel rim body profiling piece (2) to obtain a 2 / 3 wheel rim body (2a1); Obtain a lower mold, place the 2 / 3 wheel rim body (2a1) into the lower mold and take out the wheel rim body profiling piece (2); Obtain an upper mold (4), and place material on the upper mold (4) to obtain a 1 / 3 wheel rim body (2a2); Splicing one side of the wheel rim to the 2 / 3 wheel rim body (2a1); Obtaining an air bag (5), and placing the air bag (5) between the wheel rim and the 2 / 3 wheel rim body (2a1); The upper mold (4) and the lower mold are combined to splice the 1 / 3 wheel rim body (2a2) and the 2 / 3 wheel rim body (2a1) to obtain the wheel rim body; The air bag (5) is blown to preform, and the upper mold (4) and the lower mold are opened to obtain a rough blank of the wheel rim; The method of obtaining the wheel rim body profiling piece (2), pasting material on the wheel rim body profiling piece (2) to obtain a 2 / 3 wheel rim body (2a1), further comprises the following steps: Confirming the two outer ends (211) and the bottom (212) of the wheel rim body profiling member (2); Pasting material on the wheel rim body profiling member (2) and ensuring that the material covers one of the outer end portions (211) and the bottom portion (212) to obtain a 2 / 3 wheel rim body (2a1); The method of obtaining the wheel rim profiling member (1) and pasting material on the wheel rim profiling member (1) to obtain the wheel rim further comprises the following steps: Confirming the bottom (212) of the wheel rim body profiling member (2), and attaching a U-shaped strip material to the bottom (212) of the wheel rim body profiling member (2); A partial structure of the 2 / 3 wheel rim body (2a1) fits the U-shaped strip material.

2. The carbon fiber rim forming method according to claim 1, characterized in that: The step of obtaining a lower mold, placing the 2 / 3 wheel rim body (2a1) into the lower mold and taking out the wheel rim body profiling piece (2) further comprises the following steps: Obtaining a first lower die (31), wherein the first lower die (31) is provided with a snap ring groove; Obtaining a second lower mold (32), wherein the second lower mold (32) is provided with a clamping protrusion, and splicing the second lower mold (32) with the first lower mold (31); The 2 / 3 wheel rim body (2a1) is placed in a space enclosed by the first lower mold (31) and the second lower mold (32).

3. The carbon fiber rim forming method according to claim 1, characterized in that: The step of splicing one side of the wheel rim to the 2 / 3 wheel rim body (2a1) further comprises the following steps: Confirming that one end of the 2 / 3 wheel rim body (2a1) is the splicing position of the wheel rim; The wheel rim is spliced ​​at the splicing position.

4. The carbon fiber rim forming method according to claim 2, characterized in that: The step of closing the upper mold (4) with the lower mold so as to splice the 1 / 3 wheel rim body (2a2) and the 2 / 3 wheel rim body (2a1) to obtain the wheel rim body also includes the following steps: Confirming the outer peripheral position of the second lower mold (32) and the inner peripheral position of the upper mold (4); When the upper mold (4) and the lower mold are closed, it is ensured that the outer peripheral position of the second lower mold (32) is in contact with the inner peripheral position of the upper mold (4).

5. The carbon fiber rim forming method according to any one of claims 1 to 4, characterized in that: The air bag (5) is blown to preform, and the upper mold (4) and the lower mold are opened to obtain a rough blank of the wheel rim, which includes the following steps: The air bag (5) is preformed by blowing; The upper mold (4) and the lower mold are heated, and the upper mold (4) and the lower mold are pressure-maintained; After the upper mold (4) and the lower mold have cooled, the upper mold (4) and the lower mold are opened.

6. The carbon fiber rim forming method according to any one of claims 1 to 4, characterized in that: After the airbag (5) is blown for preforming, the upper mold (4) and the lower mold are opened to obtain a rough blank of the wheel rim, the following steps are also included: Grinding the rough wheel rim to remove surface burrs; The rough rim is painted.

7. A carbon fiber wheel rim mold, used in the carbon fiber wheel rim molding method according to any one of claims 1 to 6, characterized in that: The invention comprises a wheel rim profiling part (1), a wheel rim body profiling part (2), a lower die, an upper die (4) and an air bag (5); the lower die comprises a detachable first lower die (31) and a second lower die (32); the upper die (4) is clamped to the second lower die (32).

8. The carbon fiber wheel rim mold according to claim 7, characterized in that: The second lower mold (32) comprises a plurality of arc-shaped pieces (321), and the plurality of arc-shaped pieces (321) are sequentially connected end to end.

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