CN101214711A - Method for processing double curvature plastic plate shell with reinforcing mesh - Google Patents
Method for processing double curvature plastic plate shell with reinforcing mesh Download PDFInfo
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- CN101214711A CN101214711A CNA2008100195057A CN200810019505A CN101214711A CN 101214711 A CN101214711 A CN 101214711A CN A2008100195057 A CNA2008100195057 A CN A2008100195057A CN 200810019505 A CN200810019505 A CN 200810019505A CN 101214711 A CN101214711 A CN 101214711A
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Abstract
The invention relates to a processing method of high intensity and corrosion resistant hyperbolicity plastic plates and shells with steel meshes. The invention adopts the following technical proposal. The processing method of hyperbolicity plastic plates and shells with steel meshes is characterized in that the processing method comprises the following steps: 1. steel bars are made into steel meshes; positions of junctions of steel bars are fixed together; and the length of the sides of the grids of the steel mesh is less than the maximum span limit of the steel bars required by the viscosity force of the high pressure plastic casting fusant, and is also less than the maximum span limit of two-way arch bridges established inside the grids; 2. the steel meshes are arranged inside a mould of the required shape; the positions of the steel meshes are fixed; plastic is cast in the mould under high and medium pressure until both sides of the steel mesh are completely wrapped by the plastic body. By adopting the proposal, the invention overwhelms the defects of the prior art, and provides a processing method to manufacture hyperbolicity plastic plates and shells in various shapes with steel meshes at discretion.
Description
Technical field
The present invention relates to the processing method of plastic plate shell of the double curvature muscle net of a kind of intensity height, good corrosion resistance.
Background technology
Development along with industry and city, hyperbolicity carrying housing (hereinafter referred housing) is arranged in industry by what curvature thermoplastic or thermoset plastic material were made, aspect such as coal gas and drinking water obtains extensive use day by day, and example has the valve body of Plastic valve gentle, flow container etc.Compare with the traditional material metal, plastic material has in light weight and makes easy to process and corrosion resistant advantage, but it also has at the bottom of the intensity the bigger unfavorable performance of elastic modelling quantity creep little and that caused by the load long term.
These performances have not only reduced the bearing capacity of plastic casing but also make housing produce bigger short-term and TERM DEFORMATION, thereby bring negative effect for the housing durability.These distortion meetings propose very harsh requirement to sealing technology when housing need seal, and can cause the increase of manufacturing cost.Especially the deformation of creep part in the distortion, no matter be that its estimation and countermeasure in engineering all is problem the most difficult in the plastic member, why plastic member does not resemble extensive use the steel construction, reason greatly will be returned the croop property of studying carefully in plastics.Engineering circle does not also find a kind of general effective ways that can solve the creep of plastics problem up to now.
The exploitation of the new material of plastics is very fast, has every year a large amount of new materials to come into the market, and the manufacturer can't provide the long-term result of the test of new material performance.So on manufacturing and designing, often use the data of known maturing material and handle this difficulty with the means that the raising safety coefficient promptly increases material usage.This means had both improved cost, brought potential uncertainty for again the long-term safety of housing member.
For addressing these problems, the technology at plastic conduit liner steel wire is arranged on the market now.Its basic technology is: make a pure plastic inner pipe in advance; Interior pipe slowly moves along axis direction; Pipe moves simultaneously by by compiling steel wire along the pipe periphery at the knitting apparatus on the rotating disc in depositing; Have interior Guan Zaiyi of steel wire fixedly to move along its axis in the external mold, and moving plastic outer tube on the hot simultaneously notes, what reach multiple tube at last should have thickness.The big advantage of this technology is, the bearing capacity that to have improved a kind of very special simple plastic curved surface be pipeline has also been improved croop property simultaneously, although creep is not very big in ducted adverse effect.The shortcoming of this technology is its scope of application, and it can only limit to and is used on the plastics straight line pipe, all can't use even resemble the so simple engineering component of circular winding pipe.Because the steel wire of this technology can only be taken at the continuous smooth helix that twines on the cylinder, can not use valve housing, ball or elliptical container shell.The housing that runs in a large number on this class engineering need have the random again geometry of complexity because of function, they are often formed by several different shell combination, sometimes the smooth knuckle of transition right and wrong at its position, boundary more can not be strengthened with circular helix steel wire technology them.This shells is that casual labourer's part can't satisfy the requirement of lacing technology because of kinematic farm labourer's part.Again by the cross sectional shape of this shells of what in each position difference, so move and the technology of the mould fixed second time of casting is can't be produced with workpiece.
Summary of the invention
The present invention has overcome the deficiency that prior art exists, and a kind of processing method of plastic plate shell of the double curvature muscle net that can produce different shape arbitrarily is provided.
Realize above-mentioned purpose, the present invention adopts following technical scheme: a kind of processing method of plastic plate shell of double curvature muscle net is characterized in that: include following steps:
1., reinforcing bar is bundled into bar-mat reinforcement, its reinforcing bar crosspoint fixed-site is set together, wherein the grid length of side of bar-mat reinforcement is less than by the viscous force of the high pressure casting melt maximum span limits value to reinforcing bar, and also little what is set up the maximum span limits value of two-way arch bridge in grid inside simultaneously;
2., bar-mat reinforcement is placed the mould that needs custom-shaped, and fix the position of this bar-mat reinforcement, then to mould mesohigh casting, in the bar-mat reinforcement both sides are wrapped in by plastic body fully.
After adopting above-mentioned steps, we can manufacture the object housing of different shape as required, as valve housing, ball or elliptical container shell etc., product by this method manufacturing has overcome the big shortcoming of simple plastic casing creep in addition, improves the bearing capacity of plastic casing and the intensity of two housings junction, improves the durable reliability and the salable performance of housing, reduce the thickness of housing, improve the yield rate of producing and reduce cost.1. can prevent that to the restriction of the grid length of side of bar-mat reinforcement wherein reinforcing bar from surmounting its strength degree under the viscous force effect of high pressure casting melt in above-mentioned steps in, simultaneously can in the plastic casing of grid inside, set up two-way miniature arch bridge again, by the two-way arch bridge of what very big bearing capacity is arranged, reach the little characteristics of the big creep of bearing capacity so the purpose of this restriction is the product that guarantees this method manufacturing.
The further setting of the present invention is: above-mentioned steps 2. in, the mould that described bar-mat reinforcement places customization is for two-layer, has certain spacing between two-layer.The purpose of this scheme is the qualification to particular demands, owing under specific conditions, require the creep of workpiece surfaces externally and internally all little usually.
Of the present invention further the setting again is: above-mentioned steps 2. in, it is one deck that described bar-mat reinforcement places the mould of customization.The purpose of this scheme is a kind of technical scheme of common demand, is provided with relatively simply, and the place that is fit to is also many, and wherein the shape of bar-mat reinforcement can be that quadrature also can be an oblique.
Of the present invention further the setting again is: step 1. in, the surface of described reinforcing bar is a shiny surface, its cross section is circular, make the product that utilizes this method to make more even like this in the stress distribution and the creep ratio of all directions, prolong product service life, be particularly suitable for being used in the creep requirement than higher place.Step 2. in, bar-mat reinforcement can well prevent the corrosion of bar-mat reinforcement in being wrapped in by plastic body fully like this, the product plastic casing that specifically produces surface is greater than plastics as the required thickness of steel bar anti-corrosion protective layer to the reinforcing bar beeline.
Below in conjunction with accompanying drawing the present invention is further described:
Description of drawings
Fig. 1 is the structural representation of the product 1 of the inventive method manufacturing;
Fig. 2 is the stereogram of the product 2 of the inventive method manufacturing.
The specific embodiment
As shown in Figure 1, a kind of processing method of plastic plate shell of double curvature muscle net includes step:
1., reinforcing bar 1 is bundled into bar-mat reinforcement, its reinforcing bar 1 crosspoint fixed-site is set together, wherein the grid length of side of bar-mat reinforcement less than by the viscous force of high pressure casting melt to the maximum span limits value of reinforcing bar 1 with by the maximum span limits value of setting up the inner two-way arch bridge of grid; Qualification to the size of grid is very little for the creep that guarantees the product that this method is made like this, realizes that the plastic material in each grid is reversed to compressive stress state by tensile stress state, makes full use of the good bearer properties of two-way arch bridge.
2., bar-mat reinforcement is placed the mould that needs custom-shaped, and fix the position of this bar-mat reinforcement, then to mould mesohigh casting, in the bar-mat reinforcement both sides are wrapped in by plastic casing 2 fully; Its objective is to prevent that bar-mat reinforcement from contacting with extraneous, corrode, utilize the surface of the product of this method manufacturing to be greater than plastics as the required thickness of reinforcing bar 1 corrosion protective covering usually to the minimum range of bar-mat reinforcement.
After the present invention adopts above-mentioned steps, we just can manufacture the object housing of different shape as required very easily, as valve housing, ball or elliptical container shell etc., product by this method manufacturing has overcome the big shortcoming of simple plastic casing 2 creeps in addition, improves the bearing capacity of plastic casing 2 and the intensity of two housings junction, improves the durable reliability and the salable performance of housing, reduce the thickness of housing, improve the yield rate of producing and reduce cost.1. can prevent that to the restriction of the grid length of side of bar-mat reinforcement wherein reinforcing bar 1 from surmounting its strength degree under the viscous force effect of high pressure casting melt in above-mentioned steps in, simultaneously can in the plastic casing 2 of grid inside, set up two-way miniature arch bridge again, by the two-way arch bridge of what very big bearing capacity is arranged, reach the little characteristics of the big creep of bearing capacity so the purpose of this restriction is the product that guarantees this method manufacturing.
In embodiments of the present invention, step 2. in, the mould that described bar-mat reinforcement places customization is for two-layer, has certain spacing between two-layer; The purpose of this scheme is the qualification to particular demands, owing under specific conditions, require the creep of workpiece surfaces externally and internally all little usually.Certainly in embodiments of the present invention, step 2. in, described bar-mat reinforcement places the mould of customization also can be one deck, as shown in Figure 2, the purpose of this scheme is a kind of technical scheme of common demand, be provided with relatively simply, the place that is fit to is also many, and wherein the mesh shape of bar-mat reinforcement can be that quadrature also can be an oblique.
In embodiments of the present invention, step 1. in, the surface of described reinforcing bar 1 is preferably shiny surface, it is circular that its cross section also is preferably, make the product that utilizes this method to make more even like this in the stress distribution and the creep ratio of all directions, prolong product service life, be particularly suitable for being used in the creep requirement than higher place.Step 2. in, bar-mat reinforcement can well prevent the corrosion of bar-mat reinforcement in being wrapped in by plastic casing 2 fully like this, the product plastic casing that specifically produces 2 surfaces are greater than plastics as the required thickness of steel bar anti-corrosion protective layer to reinforcing bar 1 beeline.
Claims (6)
1. the processing method of the plastic plate shell of a double curvature muscle net is characterized in that: include following steps:
1., reinforcing bar is bundled into bar-mat reinforcement, its reinforcing bar crosspoint fixed-site is set together, wherein the grid length of side of bar-mat reinforcement is less than by the viscous force of the high pressure casting melt maximum span limits value to reinforcing bar, and also little what is set up the maximum span limits value of two-way arch bridge in grid inside simultaneously;
2., bar-mat reinforcement is placed the mould that needs custom-shaped, and fix the position of this bar-mat reinforcement, then to mould mesohigh casting, in the bar-mat reinforcement both sides are wrapped in by plastic casing fully.
2. the processing method of the plastic plate shell of double curvature muscle net according to claim 1 is characterized in that: above-mentioned steps 2. in, the mould that described bar-mat reinforcement places customization is for two-layer, has certain spacing between two-layer.
3. the processing method of the plastic plate shell of double curvature muscle net according to claim 1 is characterized in that: above-mentioned steps 2. in, it is one deck that described bar-mat reinforcement places the mould of customization.
4. according to the processing method of the plastic plate shell of claim 1 or 2 or 3 described double curvature muscle nets, it is characterized in that: step 1. in, the surface of described reinforcing bar is a shiny surface, its cross section is circular.
5. according to the processing method of the plastic plate shell of claim 1 or 2 or 3 described double curvature muscle nets, it is characterized in that: step 2. in, in bar-mat reinforcement is wrapped in by plastic casing fully.
6. the processing method of the plastic plate shell of double curvature muscle net according to claim 4 is characterized in that: step 2. in, in bar-mat reinforcement is wrapped in by plastic casing fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100195057A CN101214711B (en) | 2008-01-18 | 2008-01-18 | Method for processing double curvature plastic plate shell with reinforcing mesh |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100195057A CN101214711B (en) | 2008-01-18 | 2008-01-18 | Method for processing double curvature plastic plate shell with reinforcing mesh |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101214711A true CN101214711A (en) | 2008-07-09 |
| CN101214711B CN101214711B (en) | 2010-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100195057A Expired - Fee Related CN101214711B (en) | 2008-01-18 | 2008-01-18 | Method for processing double curvature plastic plate shell with reinforcing mesh |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115722880A (en) * | 2022-11-22 | 2023-03-03 | 航天特种材料及工艺技术研究所 | High-temperature-resistant ultrathin-wall packaging shell and forming method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6017335A (en) * | 1983-12-12 | 2000-01-25 | Burnham; Warren R. | Method for making a tubular product, especially a catheter, and article made thereby |
| US5116553A (en) * | 1990-12-31 | 1992-05-26 | Harvey Marty D | Method of surfacing screen organization |
| CN1793529A (en) * | 2004-12-26 | 2006-06-28 | 吕天明 | Method for mfg. manhole cover and special mould thereof |
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- 2008-01-18 CN CN2008100195057A patent/CN101214711B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115722880A (en) * | 2022-11-22 | 2023-03-03 | 航天特种材料及工艺技术研究所 | High-temperature-resistant ultrathin-wall packaging shell and forming method thereof |
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| Publication number | Publication date |
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| CN101214711B (en) | 2010-08-25 |
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Granted publication date: 20100825 Termination date: 20130118 |