CN1053577A - Fluoroplastics bellows processing method and goods thereof and particular manufacturing craft - Google Patents
Fluoroplastics bellows processing method and goods thereof and particular manufacturing craft Download PDFInfo
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- CN1053577A CN1053577A CN 90106040 CN90106040A CN1053577A CN 1053577 A CN1053577 A CN 1053577A CN 90106040 CN90106040 CN 90106040 CN 90106040 A CN90106040 A CN 90106040A CN 1053577 A CN1053577 A CN 1053577A
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- fluoroplastics
- bellows
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Abstract
The present invention is about a kind of processing method and goods and particular manufacturing craft of fluoroplastics bellows, compression molding after particular manufacturing craft is formed helical corrugation die cavity confession fluoroplastics straight tube and is heated to 275～285 ℃ by internal mold and outer cover die, slowly screw propulsion straight tube depanning cooling back is about to the fluoroplastics bellows of the good flexural property of tool, can be widely applied on the fields such as aviation, aerospace, electric industry, use as ageing-resistant, HTHP, tube connector such as corrosion-resistant and insulation tube.
Description
The present invention relates to a kind of fluorine plastic tube and processing method thereof, especially refer to the crooked flexible ripple Great Wall Software of tool pipe processing method.
Fluoroplastics are commonly called as the plastics king because it has the physical property and the chemical stability of many excellences, be widely applied to chemical industry, machinery, the mine, medicine, light textile, electronics, electric power, military project, the national economy field that space flight etc. are nearly all, being processed into sleeve pipe can use as good acid-proof wear-proof and insulation pipe fitting, but this straight tube exists in the use and can not crookedly install as connecting, defectives such as connection can't misplace, limited this antidetonation, high temperature resistant, the range of application of corrosion-resistant pipe, existing fluoroplastics bellows, it is axially annular corrugated that its structure is, general only as the axial stretching tube connector, and its processing adopts the inflatable method moulding of heating can only make short distance only three, the bellows of four crimp rings can not be made the crooked flexible tube connector of tool equally.
The objective of the invention is to provide a kind of axial spiral bellows processing method and goods and particular manufacturing craft that the fluoroplastics straight tube is processed into good flexural property.
Fluoroplastics are different from general low-temperature thermoplastic processing of plastic mechanical performance, the hardness of its material, shock strength, bending strength and plasticity, heating-up temperatures etc. are all different with common plastics, so can not make ripple Great Wall Software pipe with the method for processing common plastics, the present invention on fluoroplastics straight tube basis again property machine-shaping make ripple Great Wall Software pipe, utilize dedicated processing mould, this mould is by internal mold, outer cover die two parts are formed, plug serves as internal mold and is fixed on the pedestal, a certain section is set as axially concavo-convex rod of corrugated and outer cover die inside spin corrugated convex concave chamber corresponding formation male and female mould in the shape of a spiral on the plug, the helical corrugation die cavity that internal mold and outer die casing form, inlet forward position end ripple magnitude is shallow slightly, and particular manufacturing craft is provided with electric heater unit.Fluoroplastics bellows processing method just is based on the above-mentioned particular manufacturing craft basis and processes, the hard fluoroplastics straight tube in quite inside and outside footpath is enclosed within on the particular manufacturing craft internal mold plug, heating makes the hard straight tube mold pressing of fluoroplastics section temperature reach 275 ℃～285 ℃, slowly the screw propulsion straight tube enters the helical corrugation model of internal mold and the formation of outer cover die, through the concavo-convex rod of internal mold with outside cover die convex-concave chamber pressing mold aftershaping, promptly get ectonexine after the cooling and all be axial screw shape bellows, promptly get the fluoroplastics bellows goods that this processing way directly makes.
Further provide inventive embodiments below in conjunction with description of drawings.
Fig. 1 is fluoroplastics bellows machining status figure.
Fig. 2 is its shaping patch of particular manufacturing craft and setting matrix topology view.
As shown in the figure, its helical corrugation shape of plug (3) that serves as the particular manufacturing craft internal mold can be located at plug (3) centre for concavo-concave section and also can be located at end, plug (3) one ends or two ends are fixed on movable dismounting on the pedestal in the entire processing apparatus, straight tube (2) is exactly that top from plug (3) is inserted in, the shallow slightly straight tube that helps of helical corrugation mold cavity inlet forward position end ripple magnitude that internal mold and outer die casing form transforms to the bellows mold pressing, outer die casing also can adopt modular construction except common integral body two lobe formula structures, the present embodiment outer die casing is by spiral shaping patch (4), spiral setting matrix (5), middle helical pitch pad (8) and overcoat die holder (7) thereof constitute, shaping patch (4) places die entrance forward position end, the postpone of setting matrix (5), shaping patch (4) is big through the matrix that formalizes (5) in it, the shaping that is installed on the overcoat die holder (7) can be a secondary or number pair with setting sheet (4) (5) and middle helical pitch pad (8), is combined into outer cover die inside spin corrugated convex concave chamber.Its internal diameter approached setting matrix (5) internal diameter successively from big to small when a plurality of shaping patch (4) were arranged, present embodiment overlaps at home and abroad on the die holder (7) heater is set, heating wire (1) is wrapped on the overcoat die holder (7), also set up the thermocouple temperature controller simultaneously in order to automatic adjusting heating-up temperature, helical corrugation helical pitch and ripple magnitude are even in the plug (3), basic uniform thickness of helical pitch pad (8) and internal mold corresponding matching in the middle of in the outer die casing, be inserted in straight tube (2) on the plug (3) when being heated to 275～285 ℃, slowly screw propulsion straight tube (2) enters the helical corrugation die cavity of internal mold and the formation of outer cover die, through the concavo-convex rod of internal mold with outside cover die convex-concave chamber pressing mold aftershaping, after cooling off naturally, promptly get ectonexine and all be axial screw shape bellows, fluoroplastics straight tube of the present invention mainly refers to the ptfe plastic straight tube, provides several fluorine plastic tube goods processing specifications and size below:
Straight tube external diameter inside diameter of bel outside diameter of bel bellows helical pitch
25-32 17-24 25-35 10
40-50 30-40 43-53 12
65-80 53-68 68-83 14
100-125 86-111 104-129 16
Above bellows goods are its ripple helical pitch after mold pressing generally, ripple magnitude is even, the helical corrugation die cavity that internal mold and outer die casing form, whether its ripple helical pitch evenly can not influence its ripple helical pitch of goods that the spiral mold pressing is come out, in like manner ripple magnitude also is the same, technology of the present invention is simple, be skillfully constructed, mould is reasonable in design, the goods flexural property is good, the dislocation that is widely used in pipeline connects occasions such as charging and discharging flexural buckling conveying, can do any deflection, also can be used for aviation, aerospace, electronics, electrical industry is as high temperature resistant, the pipe fitting of high pressure or insulation tube and corrosion-resistant pipe use.
Claims (6)
1, a kind of fluoroplastics bellows processing particular manufacturing craft, form by internal mold, outer cover die two parts, it is characterized in that: serve as internal mold by plug (3) and be fixed on the pedestal, plug (3) is set as axially concavo-convex rod of corrugated and outer cover die inside spin corrugated convex concave chamber corresponding formation male and female mould in the shape of a spiral for last a certain section, the helical corrugation mold cavity inlet forward position end ripple magnitude that internal mold and outer die casing form is shallow slightly, and particular manufacturing craft is provided with electric heater unit.
2, it is characterized in that according to the described fluoroplastics bellows processing of claim 1 particular manufacturing craft: helical corrugation helical pitch and ripple magnitude are even in the plug (3), outer cover die is by spiral shaping patch (4), spiral setting matrix (5), middle helical pitch pad (8) and overcoat die holder (7) thereof constitute, shaping patch (4) places die entrance forward position end, its internal diameter formalizes matrix (5) greatly, heating wire in the electric heater unit (1) is wrapped on the overcoat die holder (7), also set up the thermocouple temperature controller simultaneously, shaping patch (4), middle helical pitch pad (8) and setting matrix (5) are combined into outer cover die inside spin corrugated convex concave chamber.
3, a kind of method of utilizing the described particular manufacturing craft of claim 1 to process the fluoroplastics bellows, it is characterized in that: the hard fluoroplastics straight tube (2) in quite inside and outside footpath is enclosed within on the particular manufacturing craft internal mold plug (3), when heating makes the hard straight tube of fluoroplastics (2) mold pressing section temperature reach 275～285 ℃, slowly screw propulsion straight tube (2) enters the helical corrugation die cavity of internal mold and the formation of outer cover die, through the concavo-convex rod of internal mold with outside cover die convex-concave chamber pressing mold aftershaping, promptly get ectonexine after the cooling and all be axial screw shape bellows.
4, according to the described fluoroplastics bellows of claim 3 processing method, it is characterized in that: fluoroplastics straight tube (2) refers to the ptfe plastic straight tube.
5, a kind of fluoroplastics bellows goods that make according to the described processing method of claim 3.
6,, it is characterized in that bellows (6) ripple helical pitch and ripple magnitude are even according to the described fluoroplastics bellows of claim 5 goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106040 CN1053577A (en) | 1990-12-14 | 1990-12-14 | Fluoroplastics bellows processing method and goods thereof and particular manufacturing craft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106040 CN1053577A (en) | 1990-12-14 | 1990-12-14 | Fluoroplastics bellows processing method and goods thereof and particular manufacturing craft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1053577A true CN1053577A (en) | 1991-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90106040 Pending CN1053577A (en) | 1990-12-14 | 1990-12-14 | Fluoroplastics bellows processing method and goods thereof and particular manufacturing craft |
Country Status (1)
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| CN (1) | CN1053577A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774002A (en) * | 2012-08-15 | 2012-11-14 | 刘晖 | Mold and method for making special-shaped polytetrafluoroethylene tube |
| CN104001760A (en) * | 2013-02-21 | 2014-08-27 | 中国石油化工股份有限公司 | Expansion corrugation pipe end shaping device and method |
| WO2014127719A1 (en) * | 2013-02-19 | 2014-08-28 | 上海微创医疗器械（集团）有限公司 | Method of forming spiral layer on inside of catheter |
| CN106384902A (en) * | 2016-11-29 | 2017-02-08 | 河南天海电器有限公司 | Connector contact type elastic internal contact structure, manufacture die and manufacture method for the same |
| CN111922156A (en) * | 2020-08-03 | 2020-11-13 | 陆凯鑫 | Corrugated pipe and corrugated pipe forming system |
-
1990
- 1990-12-14 CN CN 90106040 patent/CN1053577A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774002A (en) * | 2012-08-15 | 2012-11-14 | 刘晖 | Mold and method for making special-shaped polytetrafluoroethylene tube |
| CN102774002B (en) * | 2012-08-15 | 2015-01-21 | 刘晖 | Method for making special-shaped polytetrafluoroethylene tube by using mold |
| WO2014127719A1 (en) * | 2013-02-19 | 2014-08-28 | 上海微创医疗器械（集团）有限公司 | Method of forming spiral layer on inside of catheter |
| CN104001760A (en) * | 2013-02-21 | 2014-08-27 | 中国石油化工股份有限公司 | Expansion corrugation pipe end shaping device and method |
| CN104001760B (en) * | 2013-02-21 | 2016-09-21 | 中国石油化工股份有限公司 | A kind of expansion ripple pipe end apparatus for shaping and method |
| CN106384902A (en) * | 2016-11-29 | 2017-02-08 | 河南天海电器有限公司 | Connector contact type elastic internal contact structure, manufacture die and manufacture method for the same |
| CN111922156A (en) * | 2020-08-03 | 2020-11-13 | 陆凯鑫 | Corrugated pipe and corrugated pipe forming system |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |