CN1102595A - Composite mfg. method of reinforced structure of racket - Google Patents
Composite mfg. method of reinforced structure of racket Download PDFInfo
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- CN1102595A CN1102595A CN93114860A CN93114860A CN1102595A CN 1102595 A CN1102595 A CN 1102595A CN 93114860 A CN93114860 A CN 93114860A CN 93114860 A CN93114860 A CN 93114860A CN 1102595 A CN1102595 A CN 1102595A
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Abstract
The method for manufacturing integrally-shaped composite racket with strengthened structure by use of wire winding technology mainly features that partial pre-immersed material which has been wound continuously by automatic winder is combined with the strengthening layer of pre-immersed materials at different angles, the strengthening layer is stuck to position on racket, where it is needed to strengthen, and finally the racket is shaped by heating and hardening. Its advantage is high strength.
Description
The present invention relates to a kind of composite method for making of reinforced structure of racket, mainly be to be made as blade in advance with the preimpregnation material that automatic wrapping machine twines out, and cooperate the strengthening course paste the preimpregnation material that is folded into different angles in need reinforcement position, cooperate again the gummed homogenizing handle with blade one heat hardening moulding, so that during, provide low-cost, low pollution, high-intensity racket method for making with the saving worker.
Badminton, tennis are motion very in vogue, and the racket of use is owing to the action and the application of force that involve the repetitiousness batting, so the weight of racket and strength specification all are the emphasis that must consider cautiously in the R﹠D process.And no matter be tennis racket or Badminton racket, because of science and technology is weeded out the old and bring forth the new, realize that gradually the racket structure body has arrived the progressive limit.For effectively strengthening racket intensity, the research and development of material have been current development priority, are improved the racket weight strength such as composites such as seeing through carbon fiber.
The racket that composite is made as shown in Figure 6, its blade 30 is very not identical because of each zone of wire side receives the power of bouncing, cause blade 30 each position different requirement of strength is arranged, in detail, blade 30 is born and is bounced the bigger regional nearly some places of strength, wire side centre zone such as blade 30 is to be effective spherical zone, and effectively spherical zone is long ellipticity and approximately near top 32, so the stressed degree at top 32 is big than both sides.Triangle throat 31 is middle junctions of blade 30 and handle again, so triangle throat 31 by blade 30 reception bounce the direct influence area of power, so the triangle throat 31 suffered strength of bouncing are bigger again than blade 30 both sides and top 32, it is also influential that two of related adjacent linking triangle throat 31 meets portion 33,34.Wherein meet portion 33,34 because of being triangle throat 31 and the junction of blade 30, and triangle throat 31 be other composite, so the portion that connects 33,34 that triangle throat 31 and blade 30 are joined is because of being that indirect marriage relation causes joint more concentrated stressed.So learnt by last explanation, meeting portion 33,34, top 32, triangle throat 31 all is stressed big zone.
Now the R﹠D direction of making racket with composite be pursue one meet low man-hour, lowly pollute, height is drawn materials rate and can have high-intensity target concurrently.So none can have aforementioned advantages concurrently with regard to present compound material racket frame manufacturing technology,
Please referring to Fig. 4, wherein expression is made blade 30 with the compound material racket frame method for making.At first as shown in Figure 4, its blade 30 is that a kind of line body of mat winding technology (is called for short the FW method; FILAMENT WINDING TECHNOLOG) is woven into.Its practice is at first resin to be inserted to contain in the immersion trough, and draw fibers is through containing immersion trough and cooperate the axle of automation wrapping machine again, rotation and drive fiber and be wound in preimpregnation material, and insert mould with this preimpregnation material that is wound in blade and give the heat hardening moulding.
This FW method truly has the shortening processing procedure, can cooperate automation to carry out, and characteristics such as the high and low cost of the rate of drawing materials, low pollution, and following shortcoming is so but arranged:
1. be the rotation of unidirectional original place because of axle, cause the fiber winding direction to be subjected to limit to a certain degree, be that fiber is that axle furls continuously, so fiber is if need change direction, need be after angle changing heavily covers some circles that unroll conversion direction again, cause locating fiber and can form 90 ° of directions at required coiling length two ends.If be used for local reinforcement, because of the 90 ° of directions in local reinforcement two ends are twined too much fibrage, can't do effective and thorough configuration (because of its intensity can get a preferable intensity from cross interleave) to the intensity of other direction, so all triangles as described above throat 31, connect parts such as portion 33,34, top 32 and all be subjected to strong influence on strengthening.
2. weight is wayward in specification, FW method fiber extensibility is relatively poor, and (the fiber extensibility is after the fiber roll that contains resin pickup of specified amount is overlying on axle, the limit width that can launch), if it is poor that the extensibility difference will cause fiber roll to cover scope, may need in a scope repeatedly is enough to do complete coating in the side of winding than multifilament, therefore 30 weight of blade hereat increase, and require lightweight trend against racket.Reduce coiling with weight reduction if desire mat, then will cause the problem of undercapacity again.
3. can't make the racket of fully integrated moulding according to the FW method, so method only blade 30 can be made, triangle throat 31 can't be made.Because of blade 30 inside are to keep hollow form, be blown into air pressure so in the middle of hardened forming, need to be nested with air blowing film Guan Yineng in the inside cooperation, make blade 30 because of pouring into the cross sectional shape that air pressure keeps mould to set, hereat triangle throat 31 needs to such an extent that establish with his legal system in addition.So the made racket surcharge of method, because of its not the technology and the requirement of strength of the fully integrated moulding of tool reduce, cause the market competitiveness to decrease.
Another kind of existing compound material racket frame method for making (as shown in Figure 5) is called UD method for making (UNI DIRECTION), be fiber to be contained behind the resin pickup to be covered in fixed angle form preimpregnation material on the cylinder, the cutting that cooperates various different angles again is with folding, to be converted into the staggered preimpregnation material of different angles, and after baking material and spreading program, in response to needing, various racket sizes are cut into length-specific, width again, and become blade and triangle throat with artificial wraparound, cooperate again behind the wraparound and insert the mold heated hardened forming.The UD method is good owing to extensibility, evenly make the surface seem more smooth after the moulding, and can this legal system do blade 30 and triangle throat 31.And can fold out the preimpregnation material of different angles, varying strength direction, and cooperate the construction materials contract process to paste the strengthening course of certain strength direction, to reach the effect of local reinforcement at privileged site.Though this method for making does not have the fiber poor ductility local strength defect of insufficient of FW method, the right shortcoming that still has following FW method not have:
1. whole processing procedure is that various, required worker duration, equipment is many than the FW method.
2. manpower demand is many, such as roll up yarn, folding, baking material, spreading, meter material, cut out material, construction materials contract all consumes a large amount of artificial, especially the construction materials contract process is covered on the position that designs in advance layer by layer by artificial preimpregnation material with various different sizes fully, wraparound becomes blade again, and its artificial cost of relying on is quite high.
3. quality is because system that the artificial technology controls, so the keeping easily because of operation careless mistake heterogeneity of quality caused such as leaking subsides, wrong reinforcing layer, misoperation to roll over and expected etc. all to cause serious quality bad reduction racket quality stability.
4. because of being made into the full wafer preimpregnation material earlier, cut out according to required size, specification again,, pollute problem, cause the rate of drawing materials low simultaneously, cause the waste of material and cost to increase so produce many waste materials of cutting out residue every day.
5. after the yarn bundle that contains resin pickup is covered on the cylinder with the equal angular direction, cut folding again according to specific angle, because of cutting angle must be set in advance and delineate on cylinder, and angle can not unrestrictedly change arbitrarily, the lamination angle that causes after folding also can't change arbitrarily, and the allotment and the design of preimpregnation material intensity direction are restricted.
Though be the UD method can revisal many disappearances of FW method, yet high labour-intensive and low draw materials expensive, waste material that rate caused pollute with the quality instability be the shortcoming that is difficult for overcoming.
So the inventor is the composite method for making that works out a kind of reinforced structure of racket because existing two kinds of method for makings all can't be taken into account the requirement of low cost, high-quality, low pollution and efficient hardening racket intensity.
Main purpose of the present invention is: a kind of composite method for making of reinforced structure of racket is provided, and mainly is under low-cost, low pollution, sweated condition, provides the racket of high additive value, the intensity of more effective lifting racket.
Therefore, method for making characteristic of the present invention mainly is to be made as blade in advance with the preimpregnation material that automatic wrapping machine twines out, pastes the strengthening course that is folded into the different angles preimpregnation material in need reinforcement place, cooperate again the gummed homogenizing handle with blade one heat hardening moulding.
The invention provides a kind of composite method for making of reinforced structure of racket, the blade top is the top, is to be triangle throat with the handle joint, and triangle throat both sides and blade joint are for meeting portion, and preimpregnation material is that the fiber cooperation contains the resin pickup formation again, wherein,
A collection of preimpregnation material, according to the requirement of racket intensity, directly braiding constitutes integrated blade, to treat making combining of strengthening course with other preimpregnation material.
Other criticizes preimpregnation material is that fiber contains behind the resin pickup preimpregnation material with the woven one-tenth full wafer of volume yarn, again through cutting, folding, spreading and be cut into the strengthening course of specific dimensions specification; Need the reinforcement position strengthening course is covered on the preimpregnation material that constitutes blade, cooperate the racket shape to insert mould and hot briquetting again.
In the composite method for making of aforesaid reinforced structure of racket, the preimpregnation material that system is established blade must cooperate the gummed homogenizing to handle, and between promptly temperature was controlled 75 to 85 ℃, heat time heating time was in 55 to 65 minutes, with the range of flow of control resin.
In the composite method for making of aforesaid reinforced structure of racket, strengthening course is sticked at the top of blade, connects between portion and triangle throat.
Advantage of the present invention is can effectively reduce man-hour, reduce cost of labor, simplify processing procedure effectively, reduce and pollute, and can intactly promote the intensity of racket privileged site, and make the requirement up to specification of racket bulk strength, one high additive value and the high market competitiveness are provided, make industrial utilization low-cost, lowly pollute, arrive optimal economic benefit under the high-quality principle.
Further specify architectural feature of the present invention and purpose below in conjunction with accompanying drawing.
Brief Description Of Drawings:
Fig. 1 is a schematic flow sheet of the present invention.
Fig. 2 is the floor map that is implemented on racket of the present invention.
Fig. 3 is a cutaway view of the present invention.
Fig. 4 is existing schematic flow sheet.(FW method)
Fig. 5 is another existing schematic flow sheet.(UD method)
Fig. 6 is general racket outside drawing.
Annex one. the present invention and CNS standard, FW method, UD method are at the compare test table portion of every aspect of performance.
The present invention is a kind of composite method for making of reinforced structure of racket, please referring to Fig. 1,2, the preimpregnation material manufacturing of two kinds of different method for makings is arranged simultaneously.A collection of preimpregnation material cooperates the automatic wrapping machine continuous reeling to become blade 10, again through cooperating the gummed homogenizing to handle, be that temperature is between 75 to 85 ℃, heat time heating time is in 55 to 65 minutes, spread to preset range with control resin flow as far as possible, make the state of its homogenising, thinning, the weight of the whole blade 10 of balance, and wait for and other criticizes the strengthening course 20 that preimpregnation material makes and mutually combines.
Another batch preimpregnation material is full wafer, the individual layer preimpregnation material that is rolled into 0 ° of direction with volume yarn machine, cooperates the demand of varying strength direction again and is folded into the staggered double-deck preimpregnation material of different angles, constitutes strengthening course 20 through cutting out of specific dimensions specification.Being covered on the specific of blade 10 preimpregnation materials before finished with this strengthening course 20 again must the reinforcement position, such as top 12, meet portion 13,14, triangle throat 11.Treat that strengthening course 20 fits behind the location, whole cooperation is inserted mould and is heated and give hardened forming, forms a complete racket form.Connect as shown in Figure 3 the section of combining of portion 13 and strengthening course 20.
The main characteristic of the present invention is suitably to improve aforementioned existing shortcoming, promptly earlier utilizes the automatic wrapping machine fast and stable according to the FW method and blade that continuously winding goes out preimpregnation material, reaches and saves artificial and raw material, shortens processing procedure, reduces the industrial value that pollutes.
Then cooperate again and paste preferable, the easy made strengthening course 20 of UD method that flexibly reaches reinforcing effect of extensibility in privileged site, make it utilize its fiber extensibility preferable and reach bigger coverage, and cooperate the gummed homogenizing to handle, control resin flow and can have light-weighted purpose concurrently.The top 12, two that suitably is coated on blade 10 meets portion 13,14, and makes triangle throat 11, and inserts the mold heated hardened forming, forms the high racket of a surcharge, and strengthens the intensity of whole racket effectively, improves quality.
Be with being worth mentioning, the racket that the present invention makes is through every test gained data, not only all reach standard, existing two kinds of made rackets of method for making have high quality level, shown in annex one, such as fatigue test, predict the fatigue rupture degree according to its repetitiousness force de frappe, be to hit at least 3 * 10 according to the CNS standard with 65KGF
4Inferior and do not have and to lose; And the FW method make racket be 25300 times the fracture; The UD method hits 3 * 10
4Inferior not fracture; And goods of the present invention also keep same degree at least, meet standard.In addition, more as bend test, do not have when the CNS standard is application of force 80KGF and lose; And the FW method person of making is the 100KGF fracture; The UD method is to be the 130KGF fracture; Right goods of the present invention are that 150KGF just ruptures, and obvious intensity of the present invention goes even farther, and the essence of the present invention on intensity is promoted true really.And during worker shown in the field of below, the FW method is to be for 30 unit interval, the UD method is to be for 100 unit interval, yet the present invention is under intensity is promoted than FW method, UD method essence, only needed for 31.5 unit interval during worker, be enough to explanation, it is obvious to all really that the present invention promotes quality, saving man-hour and manufacturing cost.
Claims (3)
1, a kind of composite method for making of reinforced structure of racket, the blade top is the top, is to be triangle throat with the handle joint, and triangle throat both sides and blade joint are for meeting portion, and preimpregnation material is that the fiber cooperation contains the resin pickup formation again, it is characterized in that:
A collection of preimpregnation material, according to the requirement of racket intensity, directly braiding constitutes integrated blade, treating making combining of strengthening course with other preimpregnation material,
Other criticizes preimpregnation material is that fiber contains behind the resin pickup preimpregnation material with the woven one-tenth full wafer of volume yarn, again through cutting, folding, spreading and be cut into the strengthening course of specific dimensions specification; Need the reinforcement position to combine strengthening course is covered on the preimpregnation material that constitutes blade, cooperate the racket shape to insert mould and hot briquetting again.
2, the composite method for making of reinforced structure of racket according to claim 1, it is characterized in that: the preimpregnation material that system is established blade must cooperate the gummed homogenizing to handle, be between temperature is controlled 75 to 85 ℃, heat time heating time is in 55 to 65 minutes, with the range of flow of control resin.
3, the composite method for making of reinforced structure of racket according to claim 1 is characterized in that: strengthening course is sticked at the top of blade, meet portion and triangle throat is asked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93114860A CN1102595A (en) | 1993-11-10 | 1993-11-10 | Composite mfg. method of reinforced structure of racket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93114860A CN1102595A (en) | 1993-11-10 | 1993-11-10 | Composite mfg. method of reinforced structure of racket |
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| Publication Number | Publication Date |
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| CN1102595A true CN1102595A (en) | 1995-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93114860A Pending CN1102595A (en) | 1993-11-10 | 1993-11-10 | Composite mfg. method of reinforced structure of racket |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100428969C (en) * | 2003-02-27 | 2008-10-29 | 黑德技术有限公司 | Recket of ball kind sports |
| CN105344076A (en) * | 2015-11-23 | 2016-02-24 | 沈阳建筑大学 | Maintenance method for carbon fiber battledore |
-
1993
- 1993-11-10 CN CN93114860A patent/CN1102595A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100428969C (en) * | 2003-02-27 | 2008-10-29 | 黑德技术有限公司 | Recket of ball kind sports |
| CN105344076A (en) * | 2015-11-23 | 2016-02-24 | 沈阳建筑大学 | Maintenance method for carbon fiber battledore |
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