CN202283765U - Die for manufacturing polytetrafluoroethylene liners on small plug valves - Google Patents
Die for manufacturing polytetrafluoroethylene liners on small plug valves Download PDFInfo
- Publication number
- CN202283765U CN202283765U CN2011204429713U CN201120442971U CN202283765U CN 202283765 U CN202283765 U CN 202283765U CN 2011204429713 U CN2011204429713 U CN 2011204429713U CN 201120442971 U CN201120442971 U CN 201120442971U CN 202283765 U CN202283765 U CN 202283765U
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- Prior art keywords
- die
- annular gap
- core
- mould
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- Expired - Fee Related
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- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a die for manufacturing polytetrafluoroethylene liners on small plug valves. The die comprises a die barrel, die rings, a core die, a pressing die and an insert, wherein the core die has a frustum shape and sleeved in the die barrel, and an annular gap is formed between the core die and the die barrel; the die rings are arranged in the annular gap in a sealing way; the insert has an annular wedge shape, and is arranged in the annular gap by attaching to the inner wall of the die barrel; and the pressing die is cylindrical, is arranged in the annular gap in a way of moving up and down, and is positioned above the insert. The die directly performs compression molding to manufacture small polytetrafluoroethylene (PTFE) liner products having consistent wall thickness and inclined inner and outer walls. According to the size of a plug shaft of the plug valve, the interior size of the products is fitted with the overall dimension of the plug shaft, the inclination of cones is 2 degrees, the products are easily machined externally and can be assembled with valve bodies, a large number of materials are saved, the manufacturing cost of the products is reduced, the products are easy and convenient to mount, and the work efficiency is improved.
Description
Technical field
The utility model relates to the cock technical field, relates in particular to a kind of mould that is used for polytetrafluoroethylene bushing on the manufacturing small-sized plug valve.
Background technology
Plug valve is to use the cock of band through hole as opening and closing element, and the valve through the turn realization of cock is closed has good seal performance, and long service life has the advantage that in-out end seals simultaneously.Cock with fluoride lining, plug axle top adopt a polytetrafluoroethylene (PTFE) lining and O type circle and the combination of adjusting pad, promptly can adjust the seal pressure between sealing surface, and stopper is rotated flexibly, can guarantee the sealing of import and export end and middle flanged ends again.Whole seal process can be similar to thinks irrelevant with manifold pressure.Body cavity, internals such as cock body are the cock with fluoride lining of liner component, are applicable to transportation strong acid, highly basic salt, strong oxidizer and organic solvent etc. has the medium of severe corrosive, is widely used in chemical industry.
The plug axle PTFE lining of the pet cock valve of bore below 3 inches, generally through the direct processing and fabricating of PTFE thick-walled pipe, wastage of material is serious, and the wastage of material rate surpasses 50%.
The utility model content
The utility model provides a kind of mould that is used for polytetrafluoroethylene bushing on the manufacturing small-sized plug valve to the deficiency of above-mentioned prior art, and is simple in structure, easy to use.
For solving the problems of the technologies described above; The utility model adopts following technical scheme: a kind of mould that is used for polytetrafluoroethylene bushing on the manufacturing small-sized plug valve; Include mould tube, modular ring, core, pressing mold and inserts; Said core is a frustum, is set in the mould tube, and forms annular gap between the mould tube; Said modular ring is located in the annular gap hermetically; Said inserts is the ring-type wedge shape, is close to mould tube inwall and is arranged in the annular gap; Said pressing mold is a tubular, can be located in the annular gap up or down, and be positioned at the inserts top.
Preferably, said modular ring is provided with two: go up modular ring, following modular ring, said modular ring down fits loosely in the bottom of annular gap; Said upward modular ring is located at the top of annular gap versatilely, and between pressing mold and ring-type wedge shape.
Preferably, said mould tube is arranged with two parts: patrix tube and counterdie tube, two parts are that straight mouthful loose fit connects.
Preferably, said core is connected to form by the straight mouthful loose fit of last core and following core.
Compared with prior art, the advantage that the utlity model has: adopt the mould and the taper type core of tubular structure, annular gap is arranged between the two, in this annular gap, add the polytetrafluoroethylene (PTFE) material; Under the effect of pressing mold, add the extruding and the typing of the inserts of ring-type wedge shape, compression molding is small-sized polytetrafluoroethylene (PTFE) lining goods, has reduced wastage of material like this, is convenient to install.
The direct compression molding of the utility model mould, the small-sized goods of PTFE lining that consistent wall thickness that obtains and inside and outside wall are all gradient.The utility model is according to the plug shaft size of plug valve, and the shape size is coincide 2 ° of centrum gradients with plug axle appearance and size in the goods; The simple outer processing of goods just can be assembled with valve body, saves a large amount of material loss, has reduced the cost of manufacture of goods; Very easy is installed, improved operating efficiency.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Description of reference numerals:
1-counterdie tube; 2-patrix tube; Modular ring under the 3-; The last modular ring of 4-; The 5-core; 6-core extension bar; The 7-pressing mold; The 8-inserts; The 9-PTFE material.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
A kind of mould that is used for polytetrafluoroethylene bushing on the manufacturing small-sized plug valve as shown in Figure 1; Include patrix tube 2, counterdie tube 1, last modular ring 4, following modular ring 3, core 5, core extension bar 6, pressing mold 7 and inserts 8; Wherein patrix tube 2 connects into mould tube integral body with 1 straight mouthful of loose fit of counterdie tube, and core 5 is connected to core integral body with 6 straight mouthfuls of loose fits of core extension bar; Core integral body after the connection is frustum, and the external diameter of the core extension bar 6 of top does not have tapering.
Core integral body is set in the mould tube integral body, and has certain annular gap between the mould tube integral body, and PTFE material 9 just is seated in this annular gap; Be provided with modular ring 3 down in the bottom of this annular gap, this time modular ring 3 and core 5 and 1 loose fit of counterdie tube.
The top of this annular gap is provided with the inserts 8 of ring-type wedge shape, and this inserts 8 is close to the whole inwall setting of mould tube, can move up and down.And be located at inserts 8 tops successively be last modular ring 4 and pressing mold 7, and the mould tube integral body formation whole with core of last modular ring 4 cooperates, can be in annular gap up or down under the effect of pressing mold 7.
Also can only core 5 be arranged to the frustum of regulation gradient in actual use, and core extension bar 6 need not to be provided with gradient.Under the pressure of moulding press regulation, pressing mold 7 is pressed down, press modular ring 4, slide along core extension bar 6, extruding inserts 8 expects that with PTFE 9 is descending, there is the pressure conducting problem in pressing itself, through slow pressurization and pressurize the density of goods is tried one's best evenly.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (4)
1. mould that is used for polytetrafluoroethylene bushing on the manufacturing small-sized plug valve, it is characterized in that: include mould tube, modular ring, core, pressing mold and inserts, said core is a frustum, is set in the mould tube, and forms annular gap between the mould tube; Said modular ring is located in the annular gap hermetically; Said inserts is the ring-type wedge shape, is close to mould tube inwall and is arranged in the annular gap; Said pressing mold is a tubular, can be located in the annular gap up or down, and be positioned at the inserts top.
2. mould as claimed in claim 1 is characterized in that: said modular ring is provided with two: go up modular ring, following modular ring, said modular ring down fits loosely in the bottom of annular gap; Said upward modular ring is located at the top of annular gap versatilely, and between pressing mold and ring-type wedge shape.
3. mould as claimed in claim 1 is characterized in that: said mould tube is arranged with two parts: patrix tube and counterdie tube, two parts are that straight mouthful loose fit connects.
4. mould as claimed in claim 1 is characterized in that: said core is connected to form by the straight mouthful loose fit of last core and following core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204429713U CN202283765U (en) | 2011-11-10 | 2011-11-10 | Die for manufacturing polytetrafluoroethylene liners on small plug valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204429713U CN202283765U (en) | 2011-11-10 | 2011-11-10 | Die for manufacturing polytetrafluoroethylene liners on small plug valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202283765U true CN202283765U (en) | 2012-06-27 |
Family
ID=46295299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204429713U Expired - Fee Related CN202283765U (en) | 2011-11-10 | 2011-11-10 | Die for manufacturing polytetrafluoroethylene liners on small plug valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202283765U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085213A (en) * | 2012-12-13 | 2013-05-08 | 江苏金晟元特种阀门有限公司 | Valve base compression mould of chlorine gas valve |
| CN104149252A (en) * | 2014-07-25 | 2014-11-19 | 天津市天塑滨海氟塑料制品有限公司 | Die for producing poly(tetrafluoroethylene) plug cock and preparation method of plug cock |
-
2011
- 2011-11-10 CN CN2011204429713U patent/CN202283765U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085213A (en) * | 2012-12-13 | 2013-05-08 | 江苏金晟元特种阀门有限公司 | Valve base compression mould of chlorine gas valve |
| CN103085213B (en) * | 2012-12-13 | 2015-04-08 | 江苏金晟元特种阀门股份有限公司 | Valve base compression mould of chlorine gas valve |
| CN104149252A (en) * | 2014-07-25 | 2014-11-19 | 天津市天塑滨海氟塑料制品有限公司 | Die for producing poly(tetrafluoroethylene) plug cock and preparation method of plug cock |
| CN104149252B (en) * | 2014-07-25 | 2016-06-22 | 天津市天塑滨海氟塑料制品有限公司 | A kind of preparation method of the mould and this cock for producing politef cock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Bai Zhilin Inventor after: Di Yi Inventor after: Zhu Daofeng Inventor after: Su Meng Inventor before: Bai Zhilin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: BAI ZHILIN TO: BAI ZHILIN ZHAI YI ZHU DAOFENG SU MENG |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20191110 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |