CN111114686A - Process for integrally forming carbon fiber bicycle frame and application - Google Patents
Process for integrally forming carbon fiber bicycle frame and application Download PDFInfo
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- CN111114686A CN111114686A CN202010062968.2A CN202010062968A CN111114686A CN 111114686 A CN111114686 A CN 111114686A CN 202010062968 A CN202010062968 A CN 202010062968A CN 111114686 A CN111114686 A CN 111114686A
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- carbon fiber
- bicycle frame
- lost foam
- integrally forming
- frame
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K19/00—Cycle frames
- B62K19/02—Cycle frames characterised by material or cross-section of frame members
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- Engineering & Computer Science (AREA)
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- Moulding By Coating Moulds (AREA)
Abstract
The invention belongs to the technical field of frame processing technology, and relates to an integral forming process and application of a carbon fiber bicycle frame. A technology for integrally forming a carbon fiber bicycle frame comprises the steps of designing a mold according to a product drawing, manufacturing an integrated lost foam, coating a film on the surface of the lost foam, standing and/or drying to obtain a film, combining the lost foam and the film to form a core mold, and rolling the core mold by using cut carbon fiber cloth according to the lamination design requirement to obtain the integrally formed carbon fiber bicycle frame. According to the invention, the mandrel is manufactured, and then the carbon fiber bicycle frame is integrally rolled and formed, so that the continuity of carbon fibers is effectively ensured, and the carbon fiber composite material can exert the performance advantages. The process reduces the production procedures of the bicycle frame and saves the production cost. The process of the invention reduces the working procedures of machining and gluing the bicycle frame, and keeps the performance of the carbon fiber stable. The strength of the bicycle frame manufactured by the process is obviously improved on the premise of the same weight.
Description
Technical Field
The invention belongs to the technical field of frame processing technology, and relates to an integral forming process and application of a carbon fiber bicycle frame.
Background
With the concept of environmental protection and body building of the whole people being deeply popular in recent years, the environment-friendly and healthy bicycle is more and more popular with the masses. The composite material bicycle has the characteristics of light weight, high specific strength, various shapes, good shock absorption, chemical corrosion resistance, good weather resistance and the like, gradually replaces metal bicycles, and is widely applied to the production of various medium and high-grade bicycles. In order to improve the riding performance of the bicycle to the maximum extent, the full composite material bicycle is continuously improved from the design, various groups of accessories such as a handle, a vertical pipe, a front fork and a seat pipe column are newly developed and optimized, aiming at the production process of the bicycle frame at present, the existing manufacturers use the decomposition, rolling and forming process of the bicycle, and then the whole bicycle frame is assembled by processing and gluing, although the rolling and forming of the front section are simple and easy to manufacture, but the whole process is complex, and the product is easy to be mechanically processed in the processing and gluing procedure to damage the carbon fiber, so that the carbon fiber can not exert the strength advantage of the continuity, therefore, aiming at the prior art, the four steps are improved, the process of integrally forming the carbon fiber bicycle frame is created, the process simplification is realized, the continuity advantage of the carbon fiber is exerted, and the integrity of the bicycle frame is realized in the real sense.
Disclosure of Invention
The invention provides a novel process for integrally forming a carbon fiber bicycle frame and application thereof, aiming at the problems in the traditional vehicle machine production process.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
a technology for integrally forming a carbon fiber bicycle frame comprises the steps of designing a lost foam mold according to a product drawing, manufacturing an integrated lost foam, spraying a glue film on the surface of the lost foam, standing and/or drying to obtain a glue film, combining the lost foam and the glue film to form a core mold, rolling cut carbon fiber cloth on the surface of the core mold according to the lamination design requirement to obtain the integral bicycle frame, and forming to obtain the carbon fiber bicycle frame.
Preferably, the lost foam material is EPS (polystyrene foam).
Preferably, the thickness of the latex film sprayed on the surface of the lost foam is 0.3-2.5mm, and the spraying times are 1-9 times.
Preferably, the thickness of the latex film sprayed on the surface of the lost foam is 1.5mm, and the spraying times are 5 times.
Preferably, the glue coated on the surface of the lost foam is any one of latex, nylon and silica gel.
Preferably, the rolled integrated frame comprises a head pipe, an upper pipe, a lower pipe, a vertical pipe, a five-way joint, a rear upper fork, a rear lower fork and a hook claw.
The invention provides a carbon fiber frame with a front-rear triangular integrated structure, which is manufactured by the process.
The technology can be designed according to the requirements of the fields of bicycles, baby carriages, small wheelers and the like on the frames, the principle is the same, the requirements on size and strength are different, core moulds meeting the requirements can be designed according to specific requirements, and then the carbon fiber frames with the front and rear triangular integrated structures applied to different fields are obtained.
Compared with the prior art, the invention has the advantages and positive effects that:
1. according to the invention, the mandrel is manufactured, and then the carbon fiber bicycle frame is integrally rolled and formed, so that the continuity of carbon fibers is effectively ensured, and the carbon fiber composite material can exert the performance advantages.
2. The process reduces the production procedures of the bicycle frame and saves the production cost.
3. The process of the invention reduces the working procedures of machining and gluing the bicycle frame, and keeps the performance of the carbon fiber stable. The strength of the bicycle frame manufactured by the process is obviously improved on the premise of the same weight.
Drawings
Fig. 1 is a schematic view of an integrated lost foam.
Fig. 2 is a schematic illustration of a mandrel.
FIG. 3 is a schematic structural view of an integrally formed carbon fiber bicycle frame.
The figures are numbered: 1 lost foam, 2 core mould, 3 vehicle frame.
Detailed Description
In order that the above objects, features and advantages of the present invention may be more clearly understood, the present invention will be further described with reference to specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
In the case of the example 1, the following examples are given,
as shown in fig. 1-3, the present embodiment provides specific steps for integrally forming a carbon fiber bicycle frame, taking a bicycle frame as an example.
Firstly, aiming at a designed bicycle frame 3, calculating the wall thickness of each part of the bicycle frame 3 through strength calculation and carbon fiber composite material lamination design according to a design drawing, deducting the thickness of a latex film of 1.5mm, and finally designing the shape of a lost foam 1. After opening the mold, an integrated lost foam mold 1 was produced using EPS (polystyrene foam particles), as shown in fig. 1. Then polish the 1 smooth-going of integral type disappearance mould surface, use liquid latex to use the mode of spraying to carry out the membrane, through spraying many times (this embodiment spraying 5 times), guarantee that surface latex membrane is evenly sealed no gas leakage, then be mandrel 2 after drying, as shown in figure 2. The core mold 2 is used for rolling the bicycle frame 3 by utilizing the cut carbon fiber cloth according to the lamination design requirement, and the rolled carbon fiber bicycle frame 3 comprises a head pipe, an upper pipe, a lower pipe, a vertical pipe, a five-way pipe, a rear upper fork, a rear lower fork, a hook claw and other complete bicycle frames 3. The carbon fiber bicycle frame 3 is integrally formed by a die, and the formed product is the carbon fiber bicycle frame 3 as shown in fig. 3. The core mould 2 becomes smaller after the frame 3 is formed, and can be directly poured out through the holes of the head pipe, the five-way pipe and the seat pipe of the frame 3. The frame 3 meets all the strength and physical property requirements of the frame 3 glued by the prior art, and can be directly ridden or sold after being colored on the surface.
Wherein, fig. 1 is an integrated evanescent mode 1 which can shape the product, fig. 2 is a core mode 2 which is used for shaping the product shape to roll and shape the inner film to press the product, so that the product can be solidified.
The process comprises the following steps:
the method comprises the steps of product drawing, design of a core die 2 supporting piece (a lost die 1), design of a lost die mold, manufacturing of the lost die 1 by using EPS, manufacturing of the core die 2 (spraying of latex on the basis of the lost die 1), rolling of a frame 3 (using the core die 2), and forming.
The strength data of the carbon fiber bicycle frame 3 prepared by the embodiment are detected under the premise of the same weight, and the strength of the carbon fiber bicycle frame 3 prepared by the process of the embodiment is greatly improved, and the detection result is shown in table 1.
Table 1 example 1 carbon fiber bicycle frame and conventional carbon fiber bicycle frame weight strength test results
As can be seen from the data in table 1, on the premise that the weight of the carbon fiber bicycle frame 3 prepared in example 1 is slightly lower than that of the carbon fiber bicycle frame prepared in the conventional process, the drop weight impact (212 mm) and the front section impact (200 mm) test are both passed, and the ultimate strength of the head pipe of the carbon fiber bicycle frame 3 prepared in example 1 reaches 342 kgf, which is improved by 16% compared with the ultimate strength of the head pipe of the carbon fiber bicycle frame prepared in the conventional process of 296 kgf; the ultimate strength of the seat tube of the carbon fiber bicycle frame 3 prepared in the example 1 reaches 452kgf, which is improved by 20% compared with the ultimate strength 376kgf of the seat tube of the carbon fiber bicycle frame obtained by the traditional process.
Example 2
This example is different from example 1 in that the thickness of the latex film in this example is 0.3 mm; spraying latex for 1 time; by detection, the main materials of the core mould can be greatly reduced, the cost of the core mould can be reduced, and on the basis that the weight of the prepared product is the same, the ultimate strength of the head pipe is improved by 15.4%, the ultimate strength of the seat pipe is improved by 18.9%, and the ultimate strength of the seat pipe is close to the ultimate strength of the seat pipe in the same way as that of the embodiment 1.
Example 3
This example is different from example 1 in that the thickness of the latex film in this example is 2.5 mm; spraying latex for 9 times; through detection, by using the process, the main material of the core mould is increased, the success rate of core mould manufacture is greatly increased, and on the basis that the weight of the manufactured product is the same, the ultimate strength of the head pipe is improved by 15.8%, the ultimate strength of the seat pipe is improved by 19.3%, and the ultimate strength is close to the ultimate strength of the seat pipe in the same way as that of the embodiment 1.
Example 4
This example is different from example 1 in that the thickness of the latex film in this example is 2.3 mm; spraying latex for 8 times; through detection, by using the process, the main material of the core mould is increased, the success rate of core mould manufacture is greatly increased, and on the basis that the weight of the manufactured product is the same, the ultimate strength of the head pipe is improved by 16.3%, the ultimate strength of the seat pipe is improved by 19.9%, and the ultimate strength is close to the ultimate strength of the seat pipe in the same way as that of the embodiment 1.
It should be noted that the process can be designed according to the requirements of the fields of bicycles, baby carriages, small wheelers and the like on the frame, the principle is the same, the size and the strength requirements are different, and the core mold meeting the requirements can be designed according to the specific requirements, so that the front and rear triangular integrated structure carbon fiber frame applied to different fields can be obtained.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (8)
1. The technology is characterized in that a mould is designed to manufacture an integrated lost foam, a glue film is obtained by standing and/or drying after a glue film is sprayed on the surface of the lost foam, and the lost foam and the glue film are rolled according to the lamination design requirement by using cut carbon fiber cloth to obtain the integrated frame.
2. The process of integrally forming a carbon fiber frame as claimed in claim 1, wherein the lost foam material is EPS.
3. The process for integrally forming a carbon fiber frame according to claim 2, wherein the thickness of the latex film sprayed on the surface of the lost foam is 0.3-2.5mm, and the spraying times are 1-9 times.
4. The process for integrally forming a carbon fiber frame according to claim 2, wherein the thickness of the latex film sprayed on the surface of the lost foam is 1.5mm, and the spraying times are 5 times.
5. The process for integrally forming a carbon fiber frame according to claim 3, wherein the surface of the lost foam is coated with any one of latex, nylon and silica gel.
6. The process for integrally forming a carbon fiber frame according to claim 1, wherein the rolled integrated frame comprises a head tube, an upper tube, a lower tube, a vertical tube, a five-way tube, a rear upper fork, a rear lower fork and a hook claw.
7. The carbon fiber frame with the front-back triangle integrated structure manufactured by the process of any one of claims 1 to 6.
8. The use of the carbon fiber frame with front and rear triangle integrated structure as claimed in claim 7 in bicycles, trucks, saloon cars, baby carriages and small wheel vehicles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010062968.2A CN111114686A (en) | 2020-01-20 | 2020-01-20 | Process for integrally forming carbon fiber bicycle frame and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010062968.2A CN111114686A (en) | 2020-01-20 | 2020-01-20 | Process for integrally forming carbon fiber bicycle frame and application |
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| CN111114686A true CN111114686A (en) | 2020-05-08 |
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| CN202010062968.2A Pending CN111114686A (en) | 2020-01-20 | 2020-01-20 | Process for integrally forming carbon fiber bicycle frame and application |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111823453A (en) * | 2020-07-14 | 2020-10-27 | 深圳市喜德盛碳纤科技有限公司 | Frame forming method and bicycle |
| CN112498554A (en) * | 2020-12-08 | 2021-03-16 | 东莞泰合复合材料有限公司 | Carbon fiber bicycle processing method and carbon fiber bicycle |
| CN113353183A (en) * | 2021-07-14 | 2021-09-07 | 山东泰山瑞豹复合材料有限公司 | Double-lower-tube designed carbon fiber bicycle |
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| DE19900835A1 (en) * | 1998-01-13 | 1999-08-26 | M1 Sporttechnik Gmbh | Method of manufacturing a tubular support structure |
| US20040061302A1 (en) * | 2002-09-25 | 2004-04-01 | Parlee Cycles, Inc. | Techniques for making carbon fiber bicycle frames |
| CN201456278U (en) * | 2008-11-25 | 2010-05-12 | 陈锦松 | Split auxiliary mandrel for molding carbon fiber composite material |
| CN203622975U (en) * | 2013-12-10 | 2014-06-04 | 泰山体育产业集团有限公司 | Material-rolling core mould of carbon fiber bicycle frame |
| CN205930939U (en) * | 2016-06-30 | 2017-02-08 | 浙江合众新能源汽车有限公司 | Electric automobile |
| CN107599442A (en) * | 2017-08-21 | 2018-01-19 | 朱元勇 | A kind of cycle frame and its integrated forming manufacture method |
-
2020
- 2020-01-20 CN CN202010062968.2A patent/CN111114686A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19900835A1 (en) * | 1998-01-13 | 1999-08-26 | M1 Sporttechnik Gmbh | Method of manufacturing a tubular support structure |
| US20040061302A1 (en) * | 2002-09-25 | 2004-04-01 | Parlee Cycles, Inc. | Techniques for making carbon fiber bicycle frames |
| CN201456278U (en) * | 2008-11-25 | 2010-05-12 | 陈锦松 | Split auxiliary mandrel for molding carbon fiber composite material |
| CN203622975U (en) * | 2013-12-10 | 2014-06-04 | 泰山体育产业集团有限公司 | Material-rolling core mould of carbon fiber bicycle frame |
| CN205930939U (en) * | 2016-06-30 | 2017-02-08 | 浙江合众新能源汽车有限公司 | Electric automobile |
| CN107599442A (en) * | 2017-08-21 | 2018-01-19 | 朱元勇 | A kind of cycle frame and its integrated forming manufacture method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111823453A (en) * | 2020-07-14 | 2020-10-27 | 深圳市喜德盛碳纤科技有限公司 | Frame forming method and bicycle |
| CN112498554A (en) * | 2020-12-08 | 2021-03-16 | 东莞泰合复合材料有限公司 | Carbon fiber bicycle processing method and carbon fiber bicycle |
| CN113353183A (en) * | 2021-07-14 | 2021-09-07 | 山东泰山瑞豹复合材料有限公司 | Double-lower-tube designed carbon fiber bicycle |
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Application publication date: 20200508 |
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