CN202507453U - Pressing device for fluorine-plastic wrapping rubber sealing ring - Google Patents
Pressing device for fluorine-plastic wrapping rubber sealing ring Download PDFInfo
- Publication number
- CN202507453U CN202507453U CN2012200823842U CN201220082384U CN202507453U CN 202507453 U CN202507453 U CN 202507453U CN 2012200823842 U CN2012200823842 U CN 2012200823842U CN 201220082384 U CN201220082384 U CN 201220082384U CN 202507453 U CN202507453 U CN 202507453U
- Authority
- CN
- China
- Prior art keywords
- formpiston
- mould
- male mould
- fluorine
- wrapping rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a pressing device for a fluorine-plastic wrapping rubber sealing ring. The pressing device for the fluorine-plastic wrapping rubber sealing ring comprises a male mould core, a male mould and a female mould. The male mould and the female mould are sleeved on the male mould core at the same time. The male mould is clamped above the female mould. The female mould and the male mould are in clearance fit in the vertical direction, and the distance is 0.03-0.05 millimeters larger than the thickness of a thin film. An included angle formed by two inclined edges of the male mould core is 90 degrees. According to the pressing device, the male mould is in a mold insert type, when an outer wrapping rubber ring is to be pressed, the thin film is placed on a mold cavity of the female mould, and the outer wrapping rubber ring can be obtained after rubber materials are wrapped on a mold cavity of the male mould core; when an inner wrapping rubber ring is to be pressed, rubber materials can be placed on the mold cavity of the female mould, and the inner wrapping rubber ring can be obtained after the thin film is placed on the mold cavity of the male mould core to be pressed. When the pressing device for the fluorine-plastic wrapping rubber sealing ring is used, the pressed fluorine-plastic wrapping rubber sealing ring is smooth and level in appearance of the whole body, low in cost, and suitable for mass production.
Description
Technical field
The utility model belongs to mechanical manufacturing field, particularly a kind of pressure setting that coats the fluoroplastics rubber seal.
Background technology
Coating fluoroplastics rubber seal (be called for short and coat cushion rubber) is when cushion rubber vulcanizes, to be bonded in the cushion rubber working surface by fluorine plastic film to form.It has also that coefficient of friction is little, wearability reaches good advantages such as self lubricity well except that keeping the rubber ring primary characteristic, be applicable to movable sealing.Coating the fluoroplastics rubber seal all has demand on all kinds of types, have a good application prospect, and its suitable condition of work (medium, temperature, pressure) is decided by to be coated the performance of sizing material.But have certain degree of difficulty aborning owing to coat the fluoroplastics rubber seal, qualification rate is lower, adopts traditional coating fluoroplastics rubber seal compacting tool set, the polytetrafluoroethylene (PTFE) fold occurred, bonding condition of poor.The main cause that gauffer takes place is: during the part compacting, film deforms with the surface that is pressed together on cushion rubber of mould, and attaches, and fold has taken place unnecessary film.
The utility model content
The technical problem that the utility model will solve provides and a kind ofly can effectively reduce film causes the coating fluoroplastics rubber seal of gauffer because of distortion pressure setting.
A kind of pressure setting that coats the fluoroplastics rubber seal comprises formpiston fuse, formpiston and former; Formpiston and former are sleeved on the formpiston fuse simultaneously, and formpiston is installed on the top of former, and the cooperation on former and the formpiston vertical direction is a matched in clearance, the big 0.03～0.05mm of the thickness of gap ratio film; Two hypotenuse angles of formpiston fuse are 90 degree.Pressure setting is made the mold insert formula with formpiston, coats cushion rubber outward and when compacting, film is placed on the cavity impression, and sizing material is coated on just can obtain the outer cushion rubber that coats on the formpiston fuse die cavity; The interior cushion rubber that coats only needs sizing material is placed on cavity impression, is placed on film to suppress on the formpiston fuse die cavity more just to obtain interior coating cushion rubber.
The coating fluoroplastics rubber seal that adopts the utility model pressure setting to suppress, the overall appearance smooth, and also cost is low, is well suited for producing in batches.
Description of drawings
Fig. 1 coats the structural representation of fluoroplastics rubber seal pressure setting for the utility model;
Among the figure: 1-formpiston fuse, 2-formpiston fuse die cavity, 3-formpiston, 4-former, 5-cavity impression.
The specific embodiment
Coating the fluoroplastics rubber seal is when cushion rubber vulcanizes, to be bonded in the cushion rubber working surface by fluorine plastic film to form.The structure that coats the fluoroplastics rubber seal is divided into outer the coating and two kinds of interior coatings according to the difference of service condition, is respectively WF (coating the fluoroplastics rubber seal outward) and NF (interior coating fluoroplastics rubber seal).HB/Z4-76 " design of circular section seal with elastometic washer coil structures and the technical guidance document that calculates " is pressed in the selection of the calculating of coating fluoroplastics rubber seal decrement and size, gap and the surface smoothness of selection, sealing ring mounting groove, sealing drum or axle.
Coating the fluoroplastics rubber seal is formed by following materials processing:
1) fluoroplastics: undefined term polytetrafluoroethylene film SFM-2 or SFM-3, should meet the regulation of SG-187-80 " polytetrafluoroethylene film ", HB5821-83 coats fluoroplastics " O " type rubber seal technical conditions.Its thickness is generally 0.1mm～0.2mm.
2) rubber: acrylonitrile-butadiene rubber is pressed the regulation of HG6-407-79 " aircraft industry rubber part and section bar are used sizing material ", HG6-878-76 " special-purpose sizing material " or other relevant acrylonitrile-butadiene rubber standard.
3) glue: should be JQ-1 " isocyanate glue ".
Bonding condition of poor the polytetrafluoroethylene (PTFE) fold appearred, in the part that adopts traditional coating fluoroplastics rubber seal pressure setting to suppress.The main cause that gauffer takes place is: during the part compacting, film deforms with the surface that is pressed together on cushion rubber of mould, and attaches, and fold has taken place unnecessary film.
As shown in Figure 1, the pressure setting after the improvement is divided into three-part pattern, that is: formpiston fuse 1, formpiston 3, former 4.Formpiston 3 is sleeved on the formpiston fuse 1 with former 4 simultaneously; Formpiston 3 is installed on the top of former 4; Cooperation on former 4 and formpiston 3 vertical direction is a matched in clearance; Big 0.03～the 0.05mm of the thickness of gap ratio film can prevent that film is broken because of what stretching caused when matched moulds, the effect that only deforms.Two hypotenuse angles of formpiston fuse 1 are 90 degree.This pressure setting is made the mold insert formula with formpiston 3, and interior bag, outsourcing can be suppressed with same set of frock.The outer cushion rubber that coats is placed on film on the cavity impression 5 when compacting, and sizing material is coated on just can obtain the outer part that coats on the formpiston fuse die cavity 2; The interior cushion rubber that coats only needs sizing material is placed on cavity impression 5, is placed on film to suppress on the formpiston fuse die cavity 2 more just to obtain the interior part that wraps.
Concrete method for using: the annulus of surface-treated film being pressed the last 0.5mm degree of depth of former 4 devices is good down circular woollen; And be placed on the circle material on the former 4, the formpiston 3 that closes again, at this moment; Film deforms with the matched moulds of formpiston 3, becomes the hoop appearance like embroidery usefulness; If the outer part that coats only needs ring-like being coated on the formpiston fuse die cavity 2 of sizing material that will descend; If part is interior coating part, just on cavity impression 5, puts sizing material and get final product.Putting into formpiston 3 holes to formpiston fuse 1 at last vulcanizes by technological requirement.
Coat the key technical indexes of fluoroplastics rubber seal:
1) dimensional tolerance of coating fluoroplastics rubber seal should meet the regulation of HB4-56-76.
2) die joint of coating fluoroplastics rubber seal should be 45 °, and it is 135 °+0-30 along segment angle on the center line of movable sealing circle position that fluoroplastics coat scope, and following segment angle is 45 °.
3) fluoroplastics and rubber do not allow not bonding part at whole coating face.
4) the fluoroplastics working surface of bag fluorubber is answered smooth, the bubble that do not have, eyelet, impurity, concavo-convex, scuffing, burr and the bad vestige of mould processing; The vestige of the Treatment with activating agent that do not have; Allow fold at segment angle from coating in 15 ° at the edge, but should be above three; Allow the stain that diameter is not more than 0.3～0.5mm coating segment angle (is starting point with the hermetic unit center line) 45 ° with exterior domain, but be no more than three.
Coating fluoroplastics rubber seal rubber surface allows the model mild wear or processes bad vestige; The die joint burr and the fluoroplastics overlap that coat the fluoroplastics rubber seal should be removed totally, and burr and die slot dislocation all are not more than 0.1mm; During with the deburring of polishing method, the rubber part that coats fluoroplastics rubber seal coating edge allows the tarnish band that width is not more than 0.5mm.
The coating fluoroplastics rubber seal that adopts this pressure setting to suppress, the overall appearance smooth, bad cutter trades such as no bubble, eyelet, impurity, concavo-convex, scuffing, the generation of corrugationless situation, and also cost is low, is fit to very much produce in batches.
Claims (1)
1. a pressure setting that coats the fluoroplastics rubber seal comprises formpiston (3) and former (4), and it is characterized in that: said pressure setting also has a formpiston fuse (1); Formpiston (3) and former (4) are sleeved on the formpiston fuse (1) simultaneously, and formpiston (3) is installed on the top of former (4), and the cooperation on former (4) and formpiston (3) vertical direction is a matched in clearance, the big 0.03～0.05mm of the thickness of gap ratio film; Two hypotenuse angles of formpiston fuse (1) are 90 degree;
Said pressure setting is made the mold insert formula with formpiston (3), coats cushion rubber outward and when compacting, film is placed on the cavity impression (5), and sizing material is coated on formpiston fuse die cavity (2) upward just can obtain the outer cushion rubber that coats; In coat cushion rubber and only need sizing material is placed on cavity impression (5), again film be placed on formpiston fuse die cavity (2) go up compacting just can obtain in the coating cushion rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200823842U CN202507453U (en) | 2012-03-06 | 2012-03-06 | Pressing device for fluorine-plastic wrapping rubber sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200823842U CN202507453U (en) | 2012-03-06 | 2012-03-06 | Pressing device for fluorine-plastic wrapping rubber sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202507453U true CN202507453U (en) | 2012-10-31 |
Family
ID=47059956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200823842U Expired - Fee Related CN202507453U (en) | 2012-03-06 | 2012-03-06 | Pressing device for fluorine-plastic wrapping rubber sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202507453U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909595A (en) * | 2012-12-28 | 2014-07-09 | 西北橡胶塑料研究设计院 | Molding technology for fluoroplastic-coated O-type rubber ring |
| CN105058674A (en) * | 2015-09-28 | 2015-11-18 | 中国航天科技集团公司烽火机械厂 | Production mold for machining O-shaped ring |
| CN109500156A (en) * | 2018-12-28 | 2019-03-22 | 天津航天长征火箭制造有限公司 | Grid siding bend molding apparatus and method in a kind of high muscle thickness rate |
| CN112571706A (en) * | 2020-11-24 | 2021-03-30 | 贵州红阳机械有限责任公司 | Metal rubber gasket molding tool |
| CN112776242A (en) * | 2019-11-08 | 2021-05-11 | 贵州红阳机械有限责任公司 | Design and processing method of 45-degree half-edge coated fluoroplastic O-shaped ring mold |
-
2012
- 2012-03-06 CN CN2012200823842U patent/CN202507453U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909595A (en) * | 2012-12-28 | 2014-07-09 | 西北橡胶塑料研究设计院 | Molding technology for fluoroplastic-coated O-type rubber ring |
| CN105058674A (en) * | 2015-09-28 | 2015-11-18 | 中国航天科技集团公司烽火机械厂 | Production mold for machining O-shaped ring |
| CN109500156A (en) * | 2018-12-28 | 2019-03-22 | 天津航天长征火箭制造有限公司 | Grid siding bend molding apparatus and method in a kind of high muscle thickness rate |
| CN112776242A (en) * | 2019-11-08 | 2021-05-11 | 贵州红阳机械有限责任公司 | Design and processing method of 45-degree half-edge coated fluoroplastic O-shaped ring mold |
| CN112571706A (en) * | 2020-11-24 | 2021-03-30 | 贵州红阳机械有限责任公司 | Metal rubber gasket molding tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20150306 |
|
| EXPY | Termination of patent right or utility model |