CN108839743A - A kind of core shaft structure of composite material frame section tube and the production method of composite material frame section tube - Google Patents
A kind of core shaft structure of composite material frame section tube and the production method of composite material frame section tube Download PDFInfo
- Publication number
- CN108839743A CN108839743A CN201810717646.XA CN201810717646A CN108839743A CN 108839743 A CN108839743 A CN 108839743A CN 201810717646 A CN201810717646 A CN 201810717646A CN 108839743 A CN108839743 A CN 108839743A
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- CN
- China
- Prior art keywords
- mandrel
- section tube
- composite material
- material frame
- frame section
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses the production methods of a kind of core shaft structure of composite material frame section tube and composite material frame section tube.The core shaft structure is arranged with bolster in the mandrel junction of pipe fitting.Bolster works as a buffer junction when pipe fitting stress, to protect the structural stability of section tube.The production method of the section tube, cuts mandrel and is bonded, and outer surface is arranged bolster, then wraps up polymer composite in mandrel and bolster periphery, and simple process, it is easy to operate.The composite layer of the high molecular material and pipe fitting that are wrapped in junction is connected as one, and does not destroy the stability of structure.
Description
Technical field
The present invention relates to bicycle arts, particularly relate to the core shaft structure and composite material frame of a kind of composite material frame section tube
The production method of section tube.
Background technique
The vehicles that bicycle can be used as environmental protection are used to ride instead of walk, go on a journey；More and more people are using bicycle as strong
Body equipment is gone on a tour for exercise of riding, bicycle；Bicycle itself is also a sports campaign, there is various matches.Regardless of
Travel outdoors or sports in, it is integrally-built to bicycle light to propose very high requirement.
To pursue the bicycle that weight is lighter, structure is more firm, existing one kind made of polymer composite voluntarily
Vehicle carriage.Its method for forming pipe fitting is：Pass through core shaft die forming core shaft；By the pre- mandrel of being stacked on of polymer composite
On outer surface, composite layer is formed；The mandrel for being enclosed with composite layer is placed in the forming cavity room of pipe fitting mold, is added by heating
Cured molding, cooling and demolding obtain finished product pipe fitting.Mandrel material is generally expanded polypropylene, light weight, dimensionally stable,
It can play the role of support again.
Cycle frame includes multiple section tubes.Section tube is generally formed by connecting by two or multiple tubing element.Have
A kind of method is using two root canal parts while to be welded on a connecting pipe, to form special-shaped shape.However welding is easy to pipe
The material of part weld damages, and influences structural stability, to influence the service life of bicycle entirety.
There is a method in which be to cut the composite layer exposing mandrel of pipe fitting end, then cut mandrel and connect to adjust the angle,
And stacked again in junction, wrap up polymer composite, to form shape.However the mandrel of junction is only cutting face
Fitting, and it is non-integral, and structural stability is poor, and cutting can also make mandrel become fragile, and stress is easy to produce deformation, influences bicycle
Service life.
In view of this, the present inventor, which is directed in said structure design not attain, improves caused many missings and inconvenience, and
Deeply design, and actively research improvement has a fling at and develops and design the present invention.
Summary of the invention
The purpose of the present invention is to provide a kind of core shaft structure of composite material frame section tube and composite material frame section tubes
Production method, by simple technique produce to the abnormally-structured section tube for having protective effect, increase the steady of section tube
It is qualitative.
In order to achieve the above objectives, solution of the invention is：
A kind of core shaft structure of composite material frame section tube, the core shaft structure include that at least two mandrels, the mandrel includes
First mandrel, the second mandrel, the first mandrel are connect with the second mandrel, and the junction of first mandrel and the second mandrel is arranged with
Bolster.
The material of the bolster is silica gel.
The material of the mandrel is expanded polypropylene.
The density of the expanded polypropylene is 25g/L-120g/L.
The periphery of the mandrel and bolster is enclosed with polymer compound layer.
A kind of production method of composite material frame section tube comprising following steps：
The cutting of step 1, composite layer：The composite layer of the pipe fitting end connected will be needed to cut, expose the mandrel of internal layer；
The cutting of step 2, mandrel：According to the angle that pipe fitting connects, the angle of the first mandrel, the second mandrel cutting face is determined, it is right
The mandrel of exposing is cut, and cutting face is formed；
The connection of step 3, mandrel：The cutting face of first mandrel is bonded with the cutting face of the second mandrel；
Step 4, package bolster：The junction of the first mandrel and the second mandrel, the i.e. ground of cutting face fitting are arranged with bolster
Side；
Step 5, section tube are preforming：The fiber cloth of polymer composite is stacked on to the surface of mandrel and bolster in advance
On, then the fiber yarn sheet for having presoaked the polymer composite of resin is stacked in advance on the surface of fiber cloth；
Step 6, shaping structures：Preforming section tube is placed in the forming cavity room of section tube mold, heating is passed through
Cure under pressure molding, cooling and demolding get product section tube.
The temperature that the step 6 heats section tube mold is 100 DEG C -140 DEG C, to the pressurization of section tube mold
Pressure value is in 1bar-10bar.
After adopting the above structure, bolster of the invention is when the first mandrel or the second mandrel stress, to junction
It works as a buffer, to protect abnormally-structured stability.Furthermore bolster uses silica gel material, and light weight has elasticity, no
It can make abnormally-structured weight gain, it will not deformation disengaging mandrel and composite layer.
The production method of composite material frame section tube of the present invention is arranged silica gel sheath in the mandrel junction of pipe fitting, later again into
The package of row polymer composite, simple process, it is easy to operate.It compares for welding, is wrapped in the height of junction
The composite layer of molecular material and pipe fitting is connected as one, and does not destroy the stability of structure.
Detailed description of the invention
Fig. 1 is the side view of section tube；
Fig. 2 is the schematic diagram of internal structure of section tube；
Fig. 3 is the A-A cross-section diagram in Fig. 1；
Fig. 4 is the B-B cross-section diagram in Fig. 1；
Fig. 5 is the schematic diagram of pipe fitting composite layer cutting；
Fig. 6 is the schematic diagram of mandrel cutting；
Fig. 7 is the schematic diagram of mandrel connection；
Fig. 8 is the schematic diagram for wrapping up bolster；
Fig. 9 is the schematic diagram that section tube is inserted in mold；
Figure 10 is the cross-section diagram of section tube mold.
Specific embodiment
In order to further explain the technical solution of the present invention, being explained in detail below by specific embodiment the present invention
It states.
Section tube face shaping has L-type, V-type, T-type, cross etc., and following structures are with relatively simple L-type shape tube
For part, other shapes are extended on this basis by the position and angle of pipe fitting connection；L-type section tube is by two root canal parts
It is formed by connecting.
As shown in Figure 1 to Figure 2, it is L-type section tube, is formed by connecting by composite pipe, including the first pipe fitting 1, second pipe
Part 2, the end of the first pipe fitting 1 are connect with the end of the second pipe fitting 2, form the section tube of L-type or similar L-type.
As shown in figure 3, introducing the forming method of pipe fitting by taking the first pipe fitting 1 as an example：First pipe fitting 1 includes 11 He of the first mandrel
Covering is wrapped in the first composite layer 12 of 11 outer surface of the first mandrel.The first mandrel 11 is formed by core shaft die；By macromolecule
The fiber cloth of composite material is stacked in advance on the surface of the first mandrel 11, then will presoak the fibre of the polymer composite of resin
Dimension yarn sheet is stacked in advance on the surface of fiber cloth, forms the first composite layer 12；The first mandrel of the first composite layer 12 will be enclosed with
11 are placed in the forming cavity room of pipe fitting mold, and by temperature-pressure curing molding, cooling and demolding obtains the first pipe fitting of finished product
1.First mandrel, 11 material is generally expanded polypropylene, density 25g/L-120g/L, light weight, dimensionally stable, and can rise
To the effect of support.
Similarly, second pipe fitting 2 includes the second mandrel 21 and covering is wrapped in the second compound of the second mandrel outer surface
Layer.
Improvement of the invention is：As shown in Figure 2, Figure 4 shows, a kind of core shaft structure of composite material frame section tube, it is described
Mandrel includes the first mandrel 11, the second mandrel 21, and the first mandrel 11 is connect with the second mandrel 21, the first mandrel 11 and the second mandrel
21 junctions are arranged with bolster 3.The material of the bolster 3 can be silica gel, and light weight, cushion effect are strong, can play to abnormal shape
The preferable protective effect of structure.
The advantages of core shaft structure of composite material frame section tube of the present invention, is：Bolster 3 is in the first pipe fitting 1 or second
When 2 stress of pipe fitting, the junction 111 of the first mandrel 11 and the second mandrel 21 is worked as a buffer, to protect special-shaped knot
The stability of structure.
Furthermore bolster 3 uses silica gel material, and light weight has elasticity, will not make abnormally-structured weight gain, will not deformation
It is detached from mandrel and composite layer.
Composite material frame section tube of the invention can be made by following production method.
Specifically, the production method of section tube specifically includes shown in cooperation Fig. 5 to Figure 10：
The cutting of step 1, composite layer：Such as Fig. 5, the composite layer 12 of 1 end of the first pipe fitting connected will be needed to cut, made interior
The mandrel 11 of layer exposes.This step the second pipe fitting is similarly；
The cutting of step 2, mandrel：Such as Fig. 6, according to the angle that the first pipe fitting 1 is connect with the second pipe fitting 2, determine the first mandrel 11,
The angle in 21 cutting face of the second mandrel, cuts the mandrel of exposing, forms cutting face；
The connection of step 3, mandrel：Such as Fig. 7, the cutting face of the first mandrel 11 is bonded with the cutting face of the second mandrel 21；
Step 4, package bolster：Such as Fig. 8, the junction 111 of the first mandrel 11 and the second mandrel 21 is arranged with bolster 3, i.e.,
The place of cutting face fitting；
Step 5, section tube are preforming：The fiber cloth of polymer composite is stacked on to the surface of mandrel and bolster 3 in advance
On, then the fiber yarn sheet for having presoaked the polymer composite of resin is stacked in advance on the surface of fiber cloth；
Step 6, shaping structures：As shown in figure 9, preforming section tube to be placed in section tube mold as shown in Figure 10
In 4 forming cavity room, by temperature-pressure curing molding, cooling and demolding gets product section tube.
The above-mentioned temperature heated to section tube mold 4 is 100 DEG C -140 DEG C, to the pressure of the pressurization of section tube mold 4
Force value is in 1bar-10bar.
The advantages of production method of composite material frame section tube of the present invention, is：It is arranged bolster 3 in mandrel junction, it
Carry out the polymer composite package of 3 periphery of mandrel and bolster again afterwards, simple process, it is easy to operate.Compare weldering
For connecing, the composite layer of the high molecular material and pipe fitting that are wrapped in junction 111 is connected as one, and does not destroy the stabilization of structure
Property.
Above-described embodiment and schema and non-limiting product form and style of the invention, any technical field it is common
The appropriate changes or modifications that technical staff does it all should be regarded as not departing from patent category of the invention.
Claims (7)
1. a kind of core shaft structure of composite material frame section tube, it is characterised in that：The core shaft structure includes at least two mandrels,
The mandrel includes the first mandrel, the second mandrel, and the first mandrel connect with the second mandrel, first mandrel and the second mandrel
Junction is arranged with bolster.
2. a kind of core shaft structure of composite material frame section tube as described in claim 1, it is characterised in that：The bolster
Material is silica gel.
3. a kind of core shaft structure of composite material frame section tube as claimed in claim 1 or 2, it is characterised in that：The mandrel
Material be expanded polypropylene.
4. a kind of core shaft structure of composite material frame section tube as claimed in claim 3, it is characterised in that：The foaming poly- third
The density of alkene is 25g/L-120g/L.
5. a kind of core shaft structure of composite material frame section tube as described in claim 1, it is characterised in that：The mandrel and slow
The periphery of stamping is enclosed with polymer compound layer.
6. a kind of production method of composite material frame section tube comprising following steps：
The cutting of step 1, composite layer：The composite layer of the pipe fitting end connected will be needed to cut, expose the mandrel of internal layer；
The cutting of step 2, mandrel：According to the angle that pipe fitting connects, the angle of the first mandrel, the second mandrel cutting face is determined, it is right
The mandrel of exposing is cut, and cutting face is formed；
The connection of step 3, mandrel：The cutting face of first mandrel is bonded with the cutting face of the second mandrel；
Step 4, package bolster：The junction of the first mandrel and the second mandrel, the i.e. ground of cutting face fitting are arranged with bolster
Side；
Step 5, section tube are preforming：The fiber cloth of polymer composite is stacked on to the surface of mandrel and bolster in advance
On, then the fiber yarn sheet for having presoaked the polymer composite of resin is stacked in advance on the surface of fiber cloth；
Step 6, shaping structures：Preforming section tube is placed in the forming cavity room of section tube mold, heating is passed through
Cure under pressure molding, cooling and demolding get product section tube.
7. a kind of production method of composite material frame section tube as claimed in claim 6, it is characterised in that：The step 6 is right
The temperature of section tube mold heating is 100 DEG C -140 DEG C, to the pressure value of the pressurization of section tube mold in 1bar-10bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810717646.XA CN108839743A (en) | 2018-07-03 | 2018-07-03 | A kind of core shaft structure of composite material frame section tube and the production method of composite material frame section tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810717646.XA CN108839743A (en) | 2018-07-03 | 2018-07-03 | A kind of core shaft structure of composite material frame section tube and the production method of composite material frame section tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108839743A true CN108839743A (en) | 2018-11-20 |
Family
ID=64201395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810717646.XA Withdrawn CN108839743A (en) | 2018-07-03 | 2018-07-03 | A kind of core shaft structure of composite material frame section tube and the production method of composite material frame section tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108839743A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217305A (en) * | 2021-05-17 | 2021-08-06 | 广州赛特新能源科技发展有限公司 | Composite shaft of wind driven generator and wind driven generator |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3873391A (en) * | 1972-07-19 | 1975-03-25 | Johns Manville | Method of fabricating a plastic pipe fitting |
| JPH06114876A (en) * | 1992-09-22 | 1994-04-26 | Chen Shun-Sen | Bicycle frame made of composite material and its manufacture |
| CN1590206A (en) * | 2003-08-27 | 2005-03-09 | 凯扬自行车有限公司 | Method for jointing bicycle frame units and jointing device |
| CN1666922A (en) * | 2004-03-08 | 2005-09-14 | 李世鹏 | Method for manufacturing compound material bolstered assembling frame and finished product |
| TW200734234A (en) * | 2006-03-15 | 2007-09-16 | Brainco Composites Inc | Method to manufacture bike frame by composite material, and product thereof |
| CN101342787A (en) * | 2008-08-12 | 2009-01-14 | 林清福 | Compound material special piece molding method and molding central spindle |
| CN204801066U (en) * | 2015-07-21 | 2015-11-25 | 宁波沥高复合材料有限公司 | Adjustable bearing structure is used to aerospace combined material mould |
| CN208576684U (en) * | 2018-07-03 | 2019-03-05 | 厦门新凯复材科技有限公司 | A kind of core shaft structure of composite material frame section tube |
-
2018
- 2018-07-03 CN CN201810717646.XA patent/CN108839743A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3873391A (en) * | 1972-07-19 | 1975-03-25 | Johns Manville | Method of fabricating a plastic pipe fitting |
| JPH06114876A (en) * | 1992-09-22 | 1994-04-26 | Chen Shun-Sen | Bicycle frame made of composite material and its manufacture |
| CN1590206A (en) * | 2003-08-27 | 2005-03-09 | 凯扬自行车有限公司 | Method for jointing bicycle frame units and jointing device |
| CN1666922A (en) * | 2004-03-08 | 2005-09-14 | 李世鹏 | Method for manufacturing compound material bolstered assembling frame and finished product |
| TW200734234A (en) * | 2006-03-15 | 2007-09-16 | Brainco Composites Inc | Method to manufacture bike frame by composite material, and product thereof |
| CN101342787A (en) * | 2008-08-12 | 2009-01-14 | 林清福 | Compound material special piece molding method and molding central spindle |
| CN204801066U (en) * | 2015-07-21 | 2015-11-25 | 宁波沥高复合材料有限公司 | Adjustable bearing structure is used to aerospace combined material mould |
| CN208576684U (en) * | 2018-07-03 | 2019-03-05 | 厦门新凯复材科技有限公司 | A kind of core shaft structure of composite material frame section tube |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217305A (en) * | 2021-05-17 | 2021-08-06 | 广州赛特新能源科技发展有限公司 | Composite shaft of wind driven generator and wind driven generator |
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Application publication date: 20181120 |