CN103722977B - Many TG carbon fibre rim and preparation method thereof - Google Patents
Many TG carbon fibre rim and preparation method thereof Download PDFInfo
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- CN103722977B CN103722977B CN201410031202.2A CN201410031202A CN103722977B CN 103722977 B CN103722977 B CN 103722977B CN 201410031202 A CN201410031202 A CN 201410031202A CN 103722977 B CN103722977 B CN 103722977B
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Abstract
The invention discloses a kind of many TG carbon fibre rim and preparation method thereof, wheel rim is made up of carbon fiber composite material, comprise two crossing sidewalls and a connecting bridge, connecting bridge both sides separate out one for placing position of foetus hole slot and " V " shape inner chamber body of the inner tube of a tyre, the two is in being arranged above and below, position of foetus hole slot and the neighbouring corresponding sidewall of connecting bridge are brake limit, brake limit and connecting bridge are combined into cross section for " H " shape structure, and " H " shape structure sidewall corresponding from inner chamber body adopts the epoxy resin carbon fiber material of 2 kinds or two or more different TG respectively.The present invention, in the brake region of bearing tire pressure, adopts the epoxy resin carbon fiber material of more than 180 DEG C high TG, effectively reduces the burning frame risk of wheel rim, both improved the safety of wheel rim, takes into account the light weight of product and the requirement of safety two aspects; In non-brake part, adopt 180 DEG C to bend down the epoxy resin carbon fiber material of TG, there is good rigidity and toughness, improve product impact strength.
Description
Technical field
The present invention relates to bicycle accessories application, especially a kind of many TG carbon fibre rim and preparation method thereof.
Background technology
Cycle racing be one to the person be highly profitable place aerobic outdoor exercises, carried out widely in developed countries such as America and Europes.According to statistics, in the U.S., the outdoor exercises of one of nearly 1/3 are cycle racings.This ubiquity of carrying out of moving as can be seen here.Also traditional from our the impression vehicle of bicycle become body-building apparatus.Each manufacturer makes great efforts to improve product design invariably, and manufacturing process, uses better material, in the hope of better bicycle.
Manufacture the material of bicycle, from steel, progressively become aluminum alloy, to pursue lightweight.In recent years, the extensive carbon fibre material of costliness that uses makes frame especially.
Relative to vehicle body, the wheel rim heart especially of bicycle.Its effect, is just equivalent to the driving engine of automobile.Its importance as can be seen here.Each producer invariably makes great efforts and develops better bicycle rim, adopts new material new process one after another, to develop lighter more labour-saving product.For wheel rim, make it lighter more laborsaving, mainly contain two factors.One is the weight of wheel rim, and one is the windage of wheel rim.Light wheel rim is had an effect soon, and climb brisk, this understands very well.And for windage, when riding at a high speed, windage just becomes key very.It is generally acknowledged, windage square to be directly proportional with speed.So the design of low windage becomes more and more popular.In order to obtain low windage, one after another Cross section Design is become stream line pattern.Increasing of cross section, certainly will gain in weight, so, must accept or reject to some extent in weight and low windage.
For weight, compared to steel, aluminum alloy materials, carbon fiber composite material has unrivaled preceence.Carbon fiber composite material (CFRP), its intensity ratio steel is strong, but density only has 1.6g/cm
3, only have 1/5 of steel, compare with aluminum alloy, its modulus is 10 times of aluminium, and tensile strength is 2 times of aluminium, but weight only has 40% of aluminum alloy.So carbon fibre material is widely used for making bicycle rim.
Existing bicycle wheel rim made of carbon fibre generally adopts epoxy prepreg, and through lamination, heating extrusion forming obtains.Its forming temperature generally at 150 DEG C, molding time 45-60 minute.The glass transition point (also referred to as TG) of the epoxy resin commonly used is at 100-130 DEG C.By the wheel rim light weight that this material and forming process obtain, intensity is high.But the shortcoming of this wheel rim is, in use, when running into long descending, because need long-time brake, the temperature on brake limit can reach about 180 DEG C, because the TG point of the epoxy resin of brake limit use only has 100 DEG C-130 DEG C, under the effect of tire pressure, settle the slotted eye of the inner tube of a tyre soften and open, cause blowing out suddenly, cause and fall car accident, thus produce the safety hazard to rider.This phenomenon is commonly called as burning frame.
There is dealer to study and use the epoxy resin of TG more than 220 DEG C to make wheel rim.Although but the epoxy resin of 220 DEG C of TG can solve the safety problem under the high-temperature condition of brake generation, this resin has derived a lot of problem.First, the condition of molding of this high TG resin is harsh, need more than 220 DEG C, and molding time reaches more than 4 hours, yields poorly down, shaping with high costs, is difficult to large-scale application; Secondly, material price is expensive, and its price is more than 10 times of general T G resin, and large-scale promotion is restricted; 3rd, be that the interfacial bonding strength of material is poor, be difficult to resistance to very high tire pressure; 4th, material is more crisp, and impact resistance intensity is low, causes under the general condition used, if encounter shock, wheel rim is easy to damage, and is also easy to produce injury to rider.
Summary of the invention
The present invention, in order to solve above-mentioned Problems existing, provides a kind of many TG carbon fibre rim, overcomes the deficiencies in the prior art, in brake part, employing, higher than the epoxy resin carbon fiber material of the high TG of 180 DEG C, fully having ensured the intensity of product when braking under high temperature, ensure that the safety of product; Non-brake part, adopts 180 DEG C to bend down the epoxy resin carbon fiber material of TG, can improve product impact strength.The epoxide resin material of different TG obtains the use rationalized, and material cost is reasonably controlled, and can large-scale promotion use.
Also provide a kind of preparation method of many TG carbon fibre rim, the structure disposal integral molding of product, improve the intensity of product, durability and safety, practicality is high, and cost is reasonable.
The present invention adopts following technical scheme: many TG carbon fibre rim, be made up of carbon fiber composite material, comprise two crossing sidewalls and a connecting bridge, described connecting bridge both sides separate out one for placing position of foetus hole slot and " V " shape inner chamber body of the inner tube of a tyre, the two is in being arranged above and below, described position of foetus hole slot and the neighbouring corresponding sidewall of connecting bridge are brake limit, described brake limit and connecting bridge are combined into cross section for " H " shape structure, it is characterized in that, described " H " shape structure sidewall corresponding from described inner chamber body adopts the epoxy resin carbon fiber material of 2 kinds or two or more different TG respectively, wherein, the employing of described " H " shape structure is higher than the epoxy resin carbon fiber material of the high TG of 180 DEG C, sidewall corresponding to described inner chamber body adopts 180 DEG C to bend down the epoxy resin carbon fiber material of TG.
Preferably, the epoxy resin carbon fiber material TG of described " H " shape structure employing is more than 190 DEG C.
Further, the scope of the epoxy resin carbon fiber material TG of described " H " shape structure employing is 190 DEG C to 220 DEG C.
Preferably, the epoxy resin carbon fiber material TG scope that the sidewall that described inner chamber body is corresponding adopts is 100 DEG C to 180 DEG C.
Further, the scope of the epoxy resin carbon fiber material TG value that the intersection, two side that described inner chamber body is corresponding adopts is 100 DEG C to 130 DEG C; The epoxy resin carbon fiber material TG scope of all the other sidewalls employing that inner chamber body is corresponding is 150 DEG C to 180 DEG C.
Further, the epoxy resin carbon fiber material TG that the sidewall that described inner chamber body is corresponding adopts is 120 DEG C.
The preparation method of above-mentioned many TG carbon fibre rim, comprises the following steps:
Step 1, " H " shape structural carbon circle are shaping: the forming mould making " H " shape groove, and by the carbon fibre resin prepreg cloth laying of high TG on " H " shape groove of this mould, shaping by putting into high temperature roaster after mold-locked, the demoulding is for subsequent use;
Step 2, " V " shape inner chamber body carbon circle are shaping: become a cross section to be the inner chamber body carbon circle of " V " shape according to the inner chamber body shape lamination of wheel rim the carbon fibre resin prepreg cloth of low TG, at the opening part of V-arrangement inner chamber body carbon circle, be reserved with the carbon fibre initial rinse sheet material be combined with " H " shape structural carbon circle, be respectively position of foetus slotted eye sheet material and inner chamber body bottom sheet, separate with separated type material between the two; Airbag is inserted in the groove of V-arrangement inner chamber body carbon circle;
Step 3, " H " shape structural carbon circle is placed the correspondence position of the opening part of " V " shape inner chamber body carbon circle, the position of foetus slotted eye sheet material on opening part both sides is fitted in the outside face of " H " shape structural carbon circle, inner chamber body bottom sheet is fitted in " H " shape structural carbon circle inside face, shape according to position of foetus slotted eye and inner chamber body carries out lamination, thus obtained wheel rim pre-type product;
Step 4, wheel rim pre-type product is put into steel die, then put into former, matched moulds, in shaping airbag, fill high pressure gas shaping;
Step 5, by shaping wheel rim blank product remove burr, take out shaping airbag; In position of foetus hole slot and cavity bottom boring; Paint baking is carried out on surface.
Preferably, forming mould comprises 2 pieces and makes with soft material, and the core coincide with the interior shape of " H " shape structural carbon circle upper and lower part respectively, the carbon fibre resin prepreg cloth of high TG is wrapped in respectively the surface of core, then inserts in forming mould.
Preferably, in step 2, TG scope is laid to the carbon circle of intersection, two side at the carbon fibre resin prepreg cloth of 100 DEG C to 130 DEG C, lays TG scope at the carbon fibre resin prepreg cloth of 150 DEG C to 180 DEG C in this carbon circle outside, form the inner chamber body carbon circle that a cross section is " V " shape.
Preferably, in step 1, the forming temperature in described baking box is more than 200 DEG C, and time of heat is 6 hours; Or the forming temperature in baking box is more than 220 DEG C, time of heat is 4 hours.
The present invention has following usefulness: 1, in the brake region of bearing tire pressure, employing is higher than the epoxy resin carbon fiber material of the high TG of 180 DEG C, fully ensure the intensity of product when braking under high temperature, effectively reduce the burning frame risk of wheel rim, both the safety of wheel rim had been improved, do not increase again the weight of carbon fibre rim, take into account the light weight of product and the requirement of safety two aspects; 2, in non-brake part, adopt 180 DEG C to bend down the epoxy resin carbon fiber material of TG, there is good rigidity and toughness, improve product impact strength; 3, meet the temperature requirement of different parts, the resin material of different TG obtains the application rationalized, and give full play to respective advantage, improve the intensity of product, durability and safety, practicality is high, can large-scale promotion use.
Accompanying drawing explanation
Fig. 1 is bicycle rim structure schematic diagram;
Fig. 2 is the structural representation of the embodiment of the present invention one;
Fig. 3 is the structural representation of the embodiment of the present invention two;
Fig. 4 is " H " of the present invention shape structural representation;
Fig. 5 is the forming die structure schematic diagram of " H " shape groove of preparation method of the present invention;
Fig. 6 is " V " shape inner chamber body carbon coil structures schematic diagram in prepared by the embodiment of the present invention one;
Fig. 7 combines pre-shaped schematic diagram in the embodiment of the present invention one preparation process 3;
Fig. 8 is " V " shape inner chamber body carbon coil structures schematic diagram in prepared by the embodiment of the present invention two;
Reference numeral: 1, connecting bridge; 2, sidewall; 21, brake limit; 22, the sidewall that inner chamber body is corresponding; 23, sidewall intersection; 3, position of foetus hole slot; 4, inner chamber body; 5, the forming mould of " H " shape groove; 51, core; 52, core; 53, " H " shape groove; 7a, inner chamber body bottom sheet; 7b, position of foetus slotted eye sheet material; 7c, separated type material; 7d, airbag; The outside face of a, " H " shape structural carbon circle; The inside face of b, " H " shape structural carbon circle.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, many TG carbon fibre rim, entirety is made up of carbon fiber composite material, comprise two crossing sidewalls 2 and a connecting bridge 1, described connecting bridge 1 both sides separate out one for placing position of foetus hole slot 3 and " V " shape inner chamber body 4 of the inner tube of a tyre, and the two is in being arranged above and below, and position of foetus hole slot 3 and the neighbouring corresponding sidewall of connecting bridge 1 are brake limit 21, brake limit 21 and connecting bridge 1 are combined into cross section for " H " shape structure, as shown in Figure 4.
Due to the low thermal conductivity of carbon fiber composite material, the heat energy that brake limit 21 is produced because of drag friction not easily spreads, and easily produces hot stack, thus makes the temperature on brake limit increase, experimentally show, during brake, the temperature on brake limit can reach about 180 DEG C.Therefore, the specific embodiment of the present invention is for adopting the epoxy resin carbon fiber material of 2 kinds or two or more different TG respectively at the sidewall that " H " shape structure is corresponding from inner chamber body, wherein, " H " shape structure at brake place, limit adopts the epoxy resin carbon fiber material higher than the high TG of 180 DEG C, and sidewall corresponding to inner chamber body adopts 180 DEG C to bend down the epoxy resin carbon fiber material of TG.
Embodiment one
As shown in Figure 2, owing to continuing brake at long descending, the temperature on brake limit 21 can reach more than 180 DEG C, therefore, requires that the epoxy resin carbon fiber material TG of " H " shape structure employing is more than 190 DEG C; Consider that TG value is higher, its cost is also more expensive simultaneously, and interfacial bonding strength and Dent resistance are also poorer, and epoxy resin carbon fiber material TG value preferably controls below 220 DEG C as best.The epoxy resin carbon fiber material TG scope that the sidewall 22 of inner chamber body 4 correspondence adopts is 100 DEG C to 180 DEG C.Consider from price and Dent resistance, most preferred, the epoxy resin carbon fiber material TG of two side 22 employing that inner chamber body is corresponding is 120 DEG C.
Embodiment two
As shown in Figure 3, " H " shape structure is identical with embodiment one, and difference is: the scope of the epoxy resin carbon fiber material TG value of intersection, two side 23 employing that inner chamber body is corresponding is 100 DEG C to 130 DEG C; The epoxy resin carbon fiber material TG scope that all the other sidewalls of inner chamber body 4 correspondence adopt is 150 DEG C to 180 DEG C.
The preparation method of embodiment one, comprises the following steps:
Step 1, " H " shape structural carbon circle are shaping: the forming mould 5 making " H " shape groove, that the carbon fibre resin prepreg cloth laying of 190 DEG C to 220 DEG C is on " H " shape groove 53 of this mould by TG scope, shaping by putting into high temperature roaster after mold-locked, forming temperature in baking box is 200 DEG C, time of heat is 6 hours, or the forming temperature in baking box is 220 DEG C, time of heat is 4 hours; Then the demoulding is for subsequent use;
Step 2, " V " shape inner chamber body carbon circle are shaping: as shown in Figure 6, that the carbon fibre resin prepreg cloth of 100 DEG C to 180 DEG C becomes a cross section to be the inner chamber body carbon circle of " V " shape according to the inner chamber body shape lamination of wheel rim by TG scope, at the opening part of V-arrangement inner chamber body carbon circle, be reserved with the carbon fibre initial rinse sheet material be combined with " H " shape structural carbon circle, be respectively position of foetus slotted eye sheet material 7b and inner chamber body bottom sheet 7a, separate with separated type material 7c between the two; Airbag 7d is inserted in the groove of V-arrangement inner chamber body carbon circle;
Step 3, combination pre-shaped: as shown in Figure 7, " H " shape structural carbon circle is placed the correspondence position of the opening part of " V " shape inner chamber body carbon circle, the position of foetus slotted eye sheet material 7b on opening part both sides is fitted in the outside face b of " H " shape structural carbon circle, inner chamber body bottom sheet 7a is fitted in " H " shape structural carbon circle inside face a, shape according to position of foetus slotted eye 3 and inner chamber body 4 carries out lamination, thus obtained wheel rim pre-type product;
Step 4, wheel rim blank are shaping: wheel rim pre-type product is put into steel die, then puts into former, matched moulds, fill high pressure gas shaping in shaping airbag; Shaping wheel rim blank product are removed burr, takes out shaping airbag; In position of foetus hole slot and cavity bottom boring; Paint baking is carried out on surface.
As shown in Figure 5, the forming mould 5 of " H " shape groove comprises 2 pieces and makes with soft material, and the core 51,52 coincide with the interior shape of the upper and lower part of " H " shape structural carbon circle respectively, TG scope is wrapped in respectively the surface of core 51,52 at the carbon fibre resin prepreg cloth of 190 DEG C to 220 DEG C, then inserts in forming mould 5.
As shown in Figure 8, the preparation method of embodiment two, distinguishing with the method for embodiment one is in step 2, TG scope need be laid to the carbon circle of intersection, two side 23 at the carbon fibre resin prepreg cloth of 100 DEG C to 130 DEG C, lay TG scope at the carbon fibre resin prepreg cloth of 150 DEG C to 180 DEG C in this carbon circle outside, form the inner chamber body carbon circle that a cross section is " V " shape.
Although specifically show in conjunction with preferred embodiment and describe the present invention; but those skilled in the art should be understood that; not departing from the spirit and scope of the present invention that appended claims limits; in the form and details the present invention is made a variety of changes, be protection scope of the present invention.
Claims (6)
1. more than TG carbon fibre rim, be made up of carbon fiber composite material, comprise two crossing sidewalls and a connecting bridge, described connecting bridge both sides separate out one for placing position of foetus hole slot and " V " shape inner chamber body of the inner tube of a tyre, the two is in being arranged above and below, described position of foetus hole slot and the neighbouring corresponding sidewall of connecting bridge are brake limit, described brake limit and connecting bridge are combined into cross section for " H " shape structure, it is characterized in that, described " H " shape structure sidewall corresponding from described inner chamber body adopts the epoxy resin carbon fiber material of two or more different TG respectively, wherein, the employing of described " H " shape structure is higher than the epoxy resin carbon fiber material of the high TG of 180 DEG C, sidewall corresponding to described inner chamber body adopts 180 DEG C to bend down the epoxy resin carbon fiber material of TG, the epoxy resin carbon fiber material TG scope of the sidewall employing that described inner chamber body is corresponding is 100 DEG C to 180 DEG C, the scope of the epoxy resin carbon fiber material TG value of intersection, the two side employing that described inner chamber body is corresponding is 100 DEG C to 130 DEG C, the epoxy resin carbon fiber material TG scope of all the other sidewalls employing that inner chamber body is corresponding is 150 DEG C to 180 DEG C.
2. many TG carbon fibre rim as claimed in claim 1, is characterized in that, the epoxy resin carbon fiber material TG of the sidewall employing that described inner chamber body is corresponding is 120 DEG C.
3., for the preparation of a preparation method for the many TG carbon fibre rim as described in any one of claim 1-2, it is characterized in that, comprise the following steps:
Step 1, " H " shape structural carbon circle are shaping: the forming mould making " H " shape groove, and by the carbon fibre resin prepreg cloth laying of high TG on " H " shape groove of this mould, shaping by putting into high temperature roaster after mold-locked, the demoulding is for subsequent use;
Step 2, " V " shape inner chamber body carbon circle are shaping: become a cross section to be the inner chamber body carbon circle of " V " shape according to the inner chamber body shape lamination of wheel rim the carbon fibre resin prepreg cloth of low TG, at the opening part of V-arrangement inner chamber body carbon circle, be reserved with the carbon fibre initial rinse sheet material be combined with " H " shape structural carbon circle, be respectively position of foetus slotted eye sheet material and inner chamber body bottom sheet, separate with separated type material between the two; Airbag is inserted in the groove of V-arrangement inner chamber body carbon circle;
Step 3, combination pre-shaped: the correspondence position " H " shape structural carbon circle being placed the opening part of " V " shape inner chamber body carbon circle, the position of foetus slotted eye sheet material on opening part both sides is fitted in the outside face of " H " shape structural carbon circle, inner chamber body bottom sheet is fitted in " H " shape structural carbon circle inside face, shape according to position of foetus slotted eye and inner chamber body carries out lamination, thus obtained wheel rim pre-type product;
Step 4, wheel rim blank are shaping: wheel rim pre-type product is put into steel die, then puts into former, matched moulds, fill high pressure gas shaping in shaping airbag; Shaping wheel rim blank product are removed burr, takes out shaping airbag; In position of foetus hole slot and cavity bottom boring; Paint baking is carried out on surface.
4. the preparation method of many TG carbon fibre rim as claimed in claim 3, it is characterized in that, in step 1, forming mould comprises 2 pieces and makes with soft material, and the core coincide with the interior shape of the upper and lower part of " H " shape structural carbon circle respectively, the carbon fibre resin prepreg cloth of high TG is wrapped in respectively the surface of core, then inserts in forming mould.
5. the preparation method of many TG carbon fibre rim as claimed in claim 3, it is characterized in that, in step 2, TG scope is laid to the carbon circle of intersection, two side at the carbon fibre resin prepreg cloth of 100 DEG C to 130 DEG C, lay TG scope at the carbon fibre resin prepreg cloth of 150 DEG C to 180 DEG C in this carbon circle outside, form the inner chamber body carbon circle that a cross section is " V " shape.
6. the preparation method of many TG carbon fibre rim as claimed in claim 3, is characterized in that, in step 1, the forming temperature in described baking box is more than 200 DEG C, and time of heat is 6 hours; Or the forming temperature in baking box is more than 220 DEG C, time of heat is 4 hours.
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| CN201410031202.2A CN103722977B (en) | 2014-01-23 | 2014-01-23 | Many TG carbon fibre rim and preparation method thereof |
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| CN201410031202.2A CN103722977B (en) | 2014-01-23 | 2014-01-23 | Many TG carbon fibre rim and preparation method thereof |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201805993D0 (en) * | 2018-04-11 | 2018-05-23 | Its Cycling Ltd | A rim, rim component and rim assembly for a bicycle wheel and methods of manufacture thereof |
| TWI716716B (en) * | 2018-08-06 | 2021-01-21 | 英屬維爾京群島商龍台工業股份有限公司 | Method of manufacturing a carbon fiber wheel rim |
| CN110815861A (en) * | 2018-08-08 | 2020-02-21 | 龙台工业股份有限公司 | Manufacturing method of carbon fiber wheel frame |
| CN110370677B (en) * | 2019-07-24 | 2021-08-27 | 天津爱思达航天科技有限公司 | Method for manufacturing fairing |
| CN113787691A (en) * | 2021-09-10 | 2021-12-14 | 厦门新旺新材料科技有限公司 | Forming method of rim-shaped composite material |
| CN114161752A (en) * | 2021-12-01 | 2022-03-11 | 纤镀复材科技(厦门)有限公司 | Method for manufacturing carbon fiber rim of bicycle |
| CN114368178A (en) * | 2021-12-16 | 2022-04-19 | 捷和电机制品(深圳)有限公司 | Manufacturing method of hub and manufacturing method of omni wheel |
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| DE102009038459B3 (en) * | 2009-08-21 | 2011-03-17 | Carbofibretec Gmbh | Rim for use in impeller of single-track or multi-track vehicle e.g. racing cycle, has separate brake disk including reinforcement fiber that is made of fiber composite material and attached to area of brake surface |
| CN102371842A (en) * | 2010-08-11 | 2012-03-14 | 环航复合材料股份有限公司 | Carbon fiber wheel frame with ceramic braking parts and manufacturing method thereof |
| TWI371376B (en) * | 2011-05-20 | 2012-09-01 | Carbotec Ind Co Ltd | Method of making a bicycle rim |
| AT512673A1 (en) * | 2012-03-15 | 2013-10-15 | Leitl | Rotational body with reduced friction surface and method for producing the same |
| CN203267655U (en) * | 2013-05-30 | 2013-11-06 | 王俊雄 | Wear-resisting bicycle carbon fiber wheel frame |
| CN203681136U (en) * | 2014-01-23 | 2014-07-02 | 厦门碳帝复合材料科技有限公司 | Multi-TG carbon fiber wheel rim |
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Denomination of invention: Multi TG carbon fiber wheel and its preparation method Effective date of registration: 20210419 Granted publication date: 20160330 Pledgee: Bank of China Limited Xiamen Jimei sub branch Pledgor: XIAMEN CARBONKING COMPOSITES TECHNOLOGY Co.,Ltd. Registration number: Y2021980002751 |