CN103638684B - The preparation method of foam board sheet, model airplane wing and goods - Google Patents
The preparation method of foam board sheet, model airplane wing and goods Download PDFInfo
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- CN103638684B CN103638684B CN201310637757.7A CN201310637757A CN103638684B CN 103638684 B CN103638684 B CN 103638684B CN 201310637757 A CN201310637757 A CN 201310637757A CN 103638684 B CN103638684 B CN 103638684B
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- wing
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- board sheet
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Abstract
The invention discloses a kind of preparation method of foam board sheet, it comprises the steps: 1) get the raw materials ready, foamed board is divided into the shape preset; 2) sheet is thin, is become by foamed board truncation Bigpian thickness to be the foam board sheet of 0.1mm to 1mm; 3) foam board sheet is made into model airplane wing.The preparation method of model airplane wing, it comprises the following steps: 3.1) print; 3.2) thermoforming; 3.3) cut.Model airplane wing, it comprises wing-body, and described wing-body is foam board sheet, and its thickness is 0.1mm to 1mm.The preparation method of foam board sheet provided by the invention, can make the foam board sheet of 0.1mm to 1mm, has the characteristics such as bend resistance, slim and graceful, the easy return of elasticity.Present invention also offers model airplane wing preparation method, be easy to the model airplane wing of mass production applications foam board sheet.Model airplane wing provided by the invention, the features such as it is thin, light, significantly promote rubber power model aircraft overall performance.
Description
Technical field
The present invention relates to foam board sheet manufacturing technology, flying toy wing manufacturing technology, particularly foam board sheet, model airplane wing preparation method and model airplane wing.
Background technology
The conventional foamed board used, be generally also commonly called as pearl plate, majority is the foamed board surface coating at PS, namely becomes conventional KT plate.Its expansion ratio of PS material can reach 50 times, and now its bulk density is about 20kg/m3, and usual thickness is 2mm, 3mm, 5mm.Certainly the foamed board adopting the foaming of other macromolecular materials to make also is had.But current thickness is at 2mm and following thin foamed board, and easily break during foaming, the costs such as machinery, mould are high, and the product proportion of goods damageds are high, be difficult to batch production.And adopt traditional foamed board manufacturing technology for thickness at 1mm and following thin foamed board, or other Conventional processing methods are difficult to make especially, therefore, market do not exist the foamed board that thickness is less than 2mm yet, more do not have thickness at 1mm and following thin foamed board.
At present, show and colour, ornament materials and modeling material, as the products such as model airplane wing adopt the thickness of light-weight foam plate, be generally 2.5-3mm and more than.
When analogue formation aircraft, the weight of wing and mechanical performance are crucial, and the rubber power model aircraft that especially some volumes are little, the weight of wing is one of deciding factor of whole model flight.In some contests, wing is all usually on the peripheral frame skeleton made by cork wood or the little material of color density and rib, cover with the very thin film of one deck to form, all manufacturing process is substantially all completed by hand by entrant, because wing requires that the size of the right and left and weight want symmetrical balance, so manufacture difficulty is very large, and the method can not realize batch production, simultaneously because too fragility also cannot become the toy that durability is good, operability is stronger.
A common toy rubber power aircraft that present market is on sale be adopt the thick foamed board of 2.5mm as host wing, and in order to increase area, adopt bilateral wing design, the span of its bilateral wing is 250mm; Adopt the thick thin plate of 1.8-2mm as tailplane and vertical tail; Expanded material gross weight is minimum is about 9.5-10g for this, accounts for 40% of gross weight.The airborne period of this kind of rubber power model aircraft is generally in 20-30 second.Because size is too large, sell if do finished product, the volume of its individual packaging be 55 long × 50 wide × 15 height (cm)=41250cm
3.Packing cost and cost of transportation will become very high, and product cost becomes very low, loses the market competitiveness.So is now all sell in the mode of part, by child oneself or under the help of the teacher head of a family DIY, use very inconvenient, especially to the child at low age.If less thinner by being obtained by wing design, do weight reduction, other parts also just can do little doing gently, and whole product just can do very light.When requiring same performance, just product can be done very little, packaging and the cost of transportation of at this moment making finished product just can decline to a great extent.But not yet there are suitable material and manufacture craft at present.
In addition, the wing design of conventional model aircraft is all the thickness adopting more than 2mm.When the foamed board of the high-power foaming to more than 2mm thickness bends, because ectonexine stress difference is huge, cause skin to break, the while of holding flimsy, be also difficult in radian shape etc., make improvement to wing.And, its due to thickness excessive, fly time air drag also larger.
Inventor finds after the searching repeatedly, test of several months, adopts existing conventional material and manufacture craft thereof, all can not solve the problem.
Summary of the invention
For the above-mentioned deficiency of prior art, the object of the invention is to, a kind of foam board sheet preparation method is provided, by cutting the sheet of existing PS foamed board, producing the foam board sheet of 0.1mm to 1mm; Then according to specificity analysises such as the bend resistance of this thin slice, slim and graceful, the easy returns of elasticity, be made as model airplane wing, promoted rubber power model aircraft overall performance; A kind of model airplane wing preparation method is also provided simultaneously, is easy to batch production.
The technical scheme that the present invention is adopted for achieving the above object is:
A preparation method for foam board sheet, is characterized in that: it comprises the steps:
1) get the raw materials ready, foamed board is divided into the shape preset;
2) sheet is thin, and foamed board truncation Bigpian is cut into the foam board sheet that thickness is 0.1mm to 1mm.Foamed board in described step 1) is PS foamed board, and its thickness is 1mm to 6mm, general employing 2mm to 6mm.
A preparation method for aforementioned foam board sheet, is characterized in that, it comprises the following steps:
3) by step 2) obtained foam board sheet makes the wing of the model of an airplane further.
A preparation method for model airplane wing, is characterized in that: it comprises the steps:
3.1) print: by step 2) obtained foam board sheet delivers in printing machine and prints, be specially:
Multi-disc foam board sheet is pasted by gummed paper or glue, joins end to end and do rolling, then the foam board sheet of rolling is delivered to press printing;
Or, foam board sheet is cut into the regular size of applicable printing machine charging, then foam board sheet is sent into press printing.
3.2) thermoforming: first preheating, then vacuum suction moulding, makes the toy machine wing-like preset, last cooling and shaping;
3.3) cut, remove slitter edge, obtain model airplane wing.The thin wing of foamed board is gone out by with presetting wing foam board sheet stamping-out; When carrying out the thin wing stamping-out of foamed board, before and after wing, the medium position stamping-out of both sides goes out fixed card slot, makes left and right wing symmetrical relative to fixed card slot.
Step 3.2) 3.3) can unite two into one, form continuous seepage.
Or cancellation step 3.1), directly implement 3.4): in step 3.3) after, form pattern by silk-screen, tampon-printing process on the surface in described foam board sheet.
The model airplane wing prepared by the preparation method of described model airplane wing, it comprises wing-body, it is characterized in that: described wing-body is foam board sheet, and its thickness is 0.1mm to 1mm.
The span of described wing-body is 8 ~ 25cm, and chord length is 3 ~ 10cm.Density in described wing-body unit are is 0.0005 ~ 0.005g/cm
2.Described foamed board is PS foamed board.
Before and after described wing-body, the medium position of both sides is provided with fixed card slot, and the relative fixed card slot of left and right wing is symmetrical.Namely fixed card slot plays fixing effect, makes again wing-body when installing and using, and can find central axis easily, avoids installing the asymmetric situation of rear left and right wing and occurs.
Described wing-body mid portion is the recessed aerofoil profile of an epirelief.The shape and structure that wing-body mid portion adopts epirelief recessed.The tip station tail end of described left and right wing upwarps.
Applicant carries out searching for many years and trial-production to the wing material that meets performance requirement, test, contrast, analyze, experienced by failure many times, finally chance on to only have and adopt specific truncation technique, the sheet carrying out specific thicknesses to specific PS foamed board is thin, it is the foamed board that thin slice possesses that specific thicknesses is 0.1mm to 1mm, just meet the requirements, it is when bending, can't break, and just produce folding line, its elastic performance is good, slim and graceful easily return, the lucky property requirement that can meet model airplane wing, and other materials, as timber, cardboard etc., and exceed the PS foam sheet material of this thickness range, all can not meet the demands.
Foam board sheet preparation method provided by the invention, by specific technique, make the foam board sheet of specific 0.1mm to 1mm thickness, then for characteristics such as its bend resistance, slim and graceful, the easy returns of elasticity, be made as model airplane wing, reach the effect significantly promoting rubber power model aircraft overall performance; Its model airplane wing preparation method provided simultaneously, process is reliable and stable, and finished product rate is high, is easy to batch production, the good long service life of the wing performance produced.
The thin wing of foamed board provided by the invention, the characteristics such as its thin light, smooth arc-shaped transition, compared to traditional foamed board wing, possess higher intensity, pliability is good, weight significantly reduces, be suitable for making undersized model of an airplane product, and the gliding ability of extensible motor aircraft can be significantly improved; Simultaneously it also solves traditional high-thickness foamed trigger wing and cannot make moderate finite deformation, easily fractures, need the deficiencies such as design reinforcement, significantly can alleviate the overall weight of the model of an airplane, promote and leave a blank the flight time more than 20%.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present embodiment model airplane wing;
Fig. 2 is the use schematic diagram of the model airplane wing of the present embodiment;
Fig. 3 is the force analysis schematic diagram of aircraft when gliding;
In figure: 1. wing-body; 2. fixed card slot.
Detailed description of the invention
Participate in Fig. 1 ~ Fig. 3, the preparation method of the foam board sheet that the present embodiment provides, it comprises the steps:
1) get the raw materials ready, the foamed board of the heavy thickness chosen is divided into the shape preset, as the shape of rectangle, square, circle or model airplane wing; The PS foamed board of this foamed board to be thickness be 1mm to 6mm, or the foamed board of other macromolecular materials meeting performance requirement.
2) sheet is thin, and foamed board truncation Bigpian is cut into the foam board sheet that thickness is 0.1mm to 1mm, and wherein, the foamed board in described step 1) is PS foamed board, the PS foam board sheet of the 0.1mm that makes in the present embodiment that to be thickness be.In other embodiments, its thickness specifically can be selected according to design needs.
The preparation method of aforesaid foam board sheet, it comprises the following steps:
3) by step 2) obtained foam board sheet makes the wing of the model of an airplane further, specifically using this thin slice as the material forming aircraft wing.
A preparation method for model airplane wing, it comprises the steps:
3.1) print: by step 2) obtained foam board sheet delivers in printing machine and prints, be specially:
Multi-disc foam board sheet is pasted by gummed paper or glue, joins end to end and do rolling, then the foam board sheet of rolling is delivered to press printing;
Or, foam board sheet is cut into the regular size of applicable printing machine charging, then foam board sheet is sent into press printing;
3.2) thermoforming: first preheating, then vacuum suction moulding, makes the toy machine wing-like preset, last cooling and shaping;
3.3) cut, remove slitter edge, obtain model airplane wing.The thin wing of foamed board is gone out by with presetting wing foam board sheet stamping-out; When carrying out the thin wing stamping-out of foamed board, before and after wing, the medium position stamping-out of both sides goes out fixed card slot 2, makes left and right wing symmetrical relative to fixed card slot 2.
Described step 3.2) and 3.3) can unite two into one, form continuous seepage.
Certainly, also can cancellation step 3.1 in other embodiments), implementation step 3.4): namely in step 3.3) after form pattern by the technique such as silk-screen, bat printing on the surface of this wing, to indicate assembling position, number of assembling steps, the description of product or decorative pattern.
The model airplane wing prepared by the preparation method of described model airplane wing, it comprises wing-body 1, and described in this, wing-body 1 is PS foam board sheet, and its thickness is 0.1mm to 1mm.
The span of described wing-body 1 is 8 ~ 25cm, and chord length is 3 ~ 10cm.Density in described wing-body 1 unit are is 0.0005 ~ 0.005g/cm
2.Described foamed board is PS foamed board or other satisfactory macromolecular material foamed boards.
Before and after described wing-body 1, the medium position of both sides is provided with fixed card slot 2, and the relative fixed card slot 2 of left and right wing is symmetrical.Namely fixed card slot 2 plays fixing effect, making again wing-body 1 when installing and using, can find central axis easily, avoids installing the asymmetric situation of rear left and right wing and occurs.
Described wing-body 1 mid portion is the recessed aerofoil profile of an epirelief.The shape and structure that wing-body mid portion adopts epirelief recessed.The tip station tail end of described left and right wing upwarps.
After tested and comparative analysis, the PS plate that expansion ratio is identical, weight in its unit are is directly proportional to thickness, after the wing airplane weight saving made from the material that thickness is thin, keep requiring that the power that screw produces also can reduce during the same flight attitude of aircraft, be conducive to improving climbing and gliding ability of aircraft.Other can certainly be adopted to meet the foamed board of the macromolecular material of performance requirement.
See Fig. 3, be below the force analysis of aircraft when gliding:
In steady glide process, lift L equals the gravity W of aircraft, can converse the flying speed of aircraft according to the computing formula of lift coefficient
------------------formula 1
In formula, W is the gravity=model quality × 9.81N of the model of an airplane
ρ is atmospheric density=1.225kg/m
3
Different when height above sea level is different, time higher, air is thinner, and atmospheric density is lower, is not that too high place can calculate with this at general height above sea level.
S is wing area, and unit is m
2
C
lfor the lift coefficient of wing
As can be seen from force analysis figure during aircraft glide, decrease speed during aircraft glide.In taxiing procedures, when namely gliding angle is very little, suffered by aircraft, the ratio of resistance and lift is in close proximity to sin α, so the decrease speed of aircraft:
As can be seen from the above equation, affect decrease speed because have two, one is the average load W/S on wing, and another is
average load on wing is larger, and decrease speed during aircraft glide is larger.
For Bungee-powered glider in glide process, the minimum power P of rubber band drive propeller rotational is:
Power=resistance × speed, wherein resistance=D=W × speed=V0
I.e. minimum power
As can be seen from formula 3, the increase of the weight of aircraft and the increase of wing average load all can cause to be increased the power required for flight.For extensible motor aircraft, the energy that rubber band can store is directly proportional to rubber band weight.Namely, while will strengthening aircraft power, the weight of rubber band must also be increased.
Below the master data of the model of an airplane adopting toy airplane wing of the present invention to make:
The model of an airplane monnolithic case adopting embodiment of the present invention wing to make is of a size of: 225 long × 160 wide × 40 height (mm)
Gross weight: 1.8g (containing rubber band weight 0.2g)
Wing dimension: 160 × 70 (mm) thickness 0.5mm
Wing weight: 0.3g
Carrying in wing unit are:
Wing weight accounts for the ratio of complete machine weight:
If wing thickness is increased to 1.0mm by 0.5mm, wing weight is increased to 0.6g, and when the shape, aerofoil profile parameter etc. of wing are all constant with other parts, the decrease speed that the average load increase due to wing causes is increased to V
2.
Namely decrease speed adds 8%.
Equally due to the increase of gross weight, the aircraft power caused also needs to be increased to P
2
Namely the minimum power that the maintenance model of an airplane slides will increase by 26%
If wing thickness is changed into 2.0mm, wing weight is increased to 1.2g, and when other is constant, decrease speed is increased to V
3.
Namely decrease speed adds 22.5%.
Equally due to the increase of gross weight, the aircraft power caused also needs to be increased to P
3
Namely the minimum power that the maintenance model of an airplane slides will increase by 83.7%
Can find from above Data Comparison, thin and lightweight wing can significantly improve the gliding ability of extensible motor aircraft; The same incipient stage released energy at rubber band, be more conducive to climbing fast of model.
The foam board sheet preparation method that the present embodiment provides, by making the foam board sheet of 0.1mm to 1mm, then for characteristics such as its bend resistance, slim and graceful, the easy returns of elasticity, it can be used as a kind of model airplane wing, promote rubber power model aircraft overall performance; This model airplane wing preparation method simultaneously, is easy to batch production.The thin wing of this foamed board, the characteristic such as its thin light, smooth arc-shaped transition, compared to traditional thicker foamed board wing, can significantly improve the gliding ability of extensible motor aircraft; The foamed board wing simultaneously which solving traditional heavy thickness cannot be made moderate finite deformation, easily fractures, need the deficiencies such as design reinforcement.
Adopt method provided by the invention and thickness be 0.1-1mm foam board sheet material make a extensible motor model of an airplane sample, measure and test through concrete, its be of a size of 225 long × 160 wide × 40 height (mm), individual packaging volume be 27 long × 20 wide × 6 height (cm)=3240cm
3, be about 1/13 of existing product, being heavily be 1.8g, is about 1/14 of existing product; Significantly can reduce the size of this model of an airplane, weight, packaging and cost of transportation, can realize industrialization simultaneously and produce, product has durability and excellent flight characteristics, compares existing product and has significant progress.
The present invention is not limited to above-mentioned embodiment; adopt material, step or the structure identical or approximate with the above embodiment of the present invention; and other foam board sheet obtained, model airplane wing preparation method and model airplane wing, all within protection scope of the present invention.
Claims (10)
1. a preparation method for foam board sheet, is characterized in that: it comprises the steps:
1) get the raw materials ready, foamed board is divided into the shape preset; Described foamed board is PS foamed board, and its thickness is 1mm to 6mm;
2) sheet is thin, and foamed board truncation Bigpian is cut into the foam board sheet that thickness is 0.1mm to 1mm;
3) by step 2) obtained foam board sheet makes the wing of the model of an airplane further.
2. a preparation method for model airplane wing, is characterized in that: it comprises the steps:
3.2) thermoforming: first preheating, then vacuum suction moulding, makes the toy machine wing-like preset, last cooling and shaping;
3.3) cut, remove slitter edge, obtain model airplane wing.
3. the preparation method of model airplane wing according to claim 2, is characterized in that: it also comprises the steps:
3.1) print: by step 2) obtained foam board sheet delivers in printing machine and prints, be specially:
Multi-disc foam board sheet is pasted by gummed paper or glue, joins end to end and do rolling, then the foam board sheet of rolling is delivered to press printing;
Or, foam board sheet is cut into the regular size of applicable printing machine charging, then foam board sheet is sent into press printing.
4. the preparation method of model airplane wing according to claim 2, is characterized in that: it also comprises the steps:
3.4): in step 3.3), pattern is formed by silk-screen, tampon-printing process on the surface in foam board sheet.
5., according to the model airplane wing that the described method of one of claim 2 to 4 makes, it comprises wing-body, it is characterized in that: described wing-body is foam board sheet, and its thickness is 0.1mm to 1mm.
6. model airplane wing according to claim 5, is characterized in that: the span of described wing-body is 8 ~ 25cm, and chord length is 3 ~ 10cm.
7. model airplane wing according to claim 5, is characterized in that: the density in described wing-body unit are is 0.0005 ~ 0.005g/cm
2.
8. model airplane wing according to claim 5, is characterized in that: before and after described wing-body, the medium position of both sides is respectively equipped with fixed card slot, and the relative fixed card slot of left and right wing is symmetrical.
9. model airplane wing according to claim 5, is characterized in that: described wing-body mid portion is the recessed aerofoil profile of an epirelief.
10. model airplane wing according to claim 8, is characterized in that: the tip station tail end of described left and right wing upwarps.
Priority Applications (1)
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|---|---|---|---|
| CN201310637757.7A CN103638684B (en) | 2013-12-02 | 2013-12-02 | The preparation method of foam board sheet, model airplane wing and goods |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310637757.7A CN103638684B (en) | 2013-12-02 | 2013-12-02 | The preparation method of foam board sheet, model airplane wing and goods |
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| CN103638684B true CN103638684B (en) | 2016-04-06 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048382U (en) * | 1988-11-09 | 1989-11-29 | 吴永高 | Integrative formed aviation model made of hard foamed plastics |
| US5334068A (en) * | 1992-11-09 | 1994-08-02 | Davis Ronald T | Model aircraft corrugated paper board airfoil and method of making same |
| CN2229292Y (en) * | 1995-05-15 | 1996-06-19 | 李晓阳 | Catapulting/throwing profile model aircraft |
| CN1850463A (en) * | 2006-05-17 | 2006-10-25 | 张俊 | Cork decorative slice and its production method |
| CN201921505U (en) * | 2010-11-12 | 2011-08-10 | 深圳市艾特航模股份有限公司 | Compound fuselage mechanism for model helicopter |
-
2013
- 2013-12-02 CN CN201310637757.7A patent/CN103638684B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048382U (en) * | 1988-11-09 | 1989-11-29 | 吴永高 | Integrative formed aviation model made of hard foamed plastics |
| US5334068A (en) * | 1992-11-09 | 1994-08-02 | Davis Ronald T | Model aircraft corrugated paper board airfoil and method of making same |
| CN2229292Y (en) * | 1995-05-15 | 1996-06-19 | 李晓阳 | Catapulting/throwing profile model aircraft |
| CN1850463A (en) * | 2006-05-17 | 2006-10-25 | 张俊 | Cork decorative slice and its production method |
| CN201921505U (en) * | 2010-11-12 | 2011-08-10 | 深圳市艾特航模股份有限公司 | Compound fuselage mechanism for model helicopter |
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|---|---|
| CN103638684A (en) | 2014-03-19 |
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