CN104626459A - Rubber coating method for valve element of soft sealing gate valve - Google Patents
Rubber coating method for valve element of soft sealing gate valve Download PDFInfo
- Publication number
- CN104626459A CN104626459A CN201510012272.8A CN201510012272A CN104626459A CN 104626459 A CN104626459 A CN 104626459A CN 201510012272 A CN201510012272 A CN 201510012272A CN 104626459 A CN104626459 A CN 104626459A
- Authority
- CN
- China
- Prior art keywords
- spool
- rubber
- valve element
- encapsulate
- locating
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14008—Inserting articles into the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a rubber coating method for a valve element of a soft sealing gate valve. The rubber coating method comprises the following operation steps: respectively mounting lower and upper moulds of a valve element rubber injection mould on an automatic rubber injection press forming machine and respectively inserting rubber coating valve element locating rods into two rubber coating valve element rod locating holes; horizontally putting a matched rubber coated valve element and locating rod combination into the lower mould of the valve element rubber injection mould and horizontally putting the four rubber coated valve elements into four valve element lower mould cavities; respectively inserting three trapezoidal valve element locating blocks into two trapezoidal rubber coated valve element locating grooves and then putting into trapezoidal valve element locating block grooves; locating and assembling the upper and lower moulds of the valve element rubber injection mould through valve element upper and lower mould locating hole bolts, enabling the four rubber coated valve elements into the valve element lower mould cavities and valve element upper mould cavities, and injecting a part of liquid-state fluid EPDM rubber into rubber injection blind holes to fill gaps among valve element cavities, thus obtaining finished EPDM rubber valve element completely coated with rubber.
Description
Technical field
The overall encapsulate of EPDM rubber that the present invention relates to soft sealing gate valve spool face manufactures field, specifically belongs to a kind of soft sealing gate valve spool encapsulation methods.
Background technology
The opening and closing element of soft sealing gate valve is spool, and the direction of motion and the flow direction of spool are perpendicular, and the switch closed pair liquid stream of spool plays the effect of break-make liquid stream.(EPDM material is called EP rubbers again to the surface employing EPDM rubber of usual spool, there is ageing-resistant, electrical insulation capability and ozone resistance feature) overall encapsulate, after the spool of EPDM encapsulate and valve body close, rely on the crimp of EPDM encapsulate, reach good sealing effectiveness.Existing spool is the effigurate iron core of tool, iron core outside by the cavity of mould and iron core in pad rubber and support iron core, glue thickness is covered in guarantee, because in the sulfidation of rubber, rubber is subject to the Action of Gravity Field of thermal softening and iron core itself, in mould, iron core the latter half has the possibility of dew iron, and the mass thickness covering glue cannot ensure.In valve use procedure, reveal iron position to get rusty by the corrosion of water, this can have influence on the quality of drinking water, and then has influence on the physical and mental health of people, and this is definitely unallowed.So flexible sealing valve valve core outer surface all can not reveal iron.
Summary of the invention
The object of this invention is to provide a kind of soft sealing gate valve spool encapsulation methods, the encapsulate spool product produced in this way has easy to process, and production efficiency is high, the feature of constant product quality.
The concrete scheme that the present invention adopts is:
A kind of soft sealing gate valve spool encapsulation methods, include following method of operating, first spool gel-injection mould counterdie 9, spool gel-injection mould patrix 10 are arranged on the automatic injection transfer molding machine of rubber respectively, encapsulate spool backstay 7 is inserted in 2 encapsulate valve core rod locating holes 5 respectively, encapsulate spool backstay 7 and encapsulate valve core rod locating hole 5 interference fit, guarantee backstay and spool accurate positioning; Again the encapsulate spool of working good and backstay ligand level are put into spool gel-injection mould counterdie 9,4 encapsulate spool 6 levels contained by it put into 4 spool counterdie die cavities 1, according to encapsulate thickness, determine that encapsulate spool and drag cavity gap thickness are 2-3mm; For guaranteeing that encapsulate spool and drag cavity gap thickness are evenly and spool horizontal positioned, trapezoidal for spool locating piece 3 is inserted respectively in 2 trapezoidal locating slots 13 of encapsulate spool, put into the trapezoidal locating piece groove 11 of spool again and keep tight fit, fit clearance is no more than 0.3mm; By the upper and lower mould of rubber automatic injection transfer molding machine band movable valve plug gel-injection mould, spool gel-injection mould patrix 10 and spool gel-injection mould counterdie are located matched moulds by spool upper and lower mould locating hole 4 latch, 4 encapsulate spools 6 fall into model cavity 2 on spool counterdie die cavity 1 and spool respectively, the EPDM rubber of liquid liquid is injected by EPDM spool hole for injecting glue 3, wherein the EPDM rubber injection rubber injecting glue blind hole 12 of operative liquid liquid inserts each spool die cavity gap, makes the overall encapsulate of finished product EPDM rubber spool.
Accompanying drawing explanation
Fig. 1 is lower die structure schematic diagram;
Fig. 2 is encapsulate valve core structure schematic diagram;
Fig. 3 is encapsulate spool positional lever structure schematic diagram;
Fig. 4 is that encapsulate spool coordinates figure with backstay;
Fig. 5 is that encapsulate spool coordinates with backstay and puts into gel-injection mould schematic diagram;
Fig. 6 is upper die structure schematic diagram.
Number in the figure is: spool counterdie die cavity 1, model cavity 2 on spool, spool hole for injecting glue 3, spool upper and lower mould locating hole 4, encapsulate valve core rod locating hole 5, encapsulate spool 6, encapsulate spool backstay 7, encapsulate spool and backstay ligand 8, spool gel-injection mould counterdie 9, spool gel-injection mould patrix 10, EPDM rubber injecting glue blind hole 12, the trapezoidal locating slot 13 of spool, the trapezoidal locating piece groove 11 of spool.
Detailed description of the invention
See accompanying drawing, a kind of soft sealing gate valve spool encapsulation methods, include following method of operating, first spool gel-injection mould counterdie 9, spool gel-injection mould patrix 10 are arranged on the automatic injection transfer molding machine of rubber respectively, encapsulate spool backstay 7 is inserted in 2 encapsulate valve core rod locating holes 5 respectively, encapsulate spool backstay 7 and encapsulate valve core rod locating hole 5 interference fit, guarantee backstay and spool accurate positioning; Again the encapsulate spool of working good and backstay ligand level are put into spool gel-injection mould counterdie 9,4 encapsulate spool 6 levels contained by it put into 4 spool counterdie die cavities 1, according to encapsulate thickness, determine that encapsulate spool and drag cavity gap thickness are 2-3mm; For guaranteeing that encapsulate spool and drag cavity gap thickness are evenly and spool horizontal positioned, trapezoidal for spool locating piece 3 is inserted respectively in 2 trapezoidal locating slots 13 of encapsulate spool, put into the trapezoidal locating piece groove 11 of spool again and keep tight fit, fit clearance is no more than 0.3mm; By the upper and lower mould of rubber automatic injection transfer molding machine band movable valve plug gel-injection mould, spool gel-injection mould patrix 10 and spool gel-injection mould counterdie are located matched moulds by spool upper and lower mould locating hole 4 latch, 4 encapsulate spools 6 fall into model cavity 2 on spool counterdie die cavity 1 and spool respectively, the EPDM rubber of liquid liquid is injected by EPDM spool hole for injecting glue 3, wherein the EPDM rubber injection rubber injecting glue blind hole 12 of operative liquid liquid inserts each spool die cavity gap, makes the overall encapsulate of finished product EPDM rubber spool.
The encapsulate spool production efficiency of producing in this way is high, and constant product quality, encapsulate does not evenly exist dew iron.
Claims (1)
1. a soft sealing gate valve spool encapsulation methods, it is characterized in that, include following method of operating, first spool gel-injection mould counterdie, spool gel-injection mould patrix are arranged on the automatic injection transfer molding machine of rubber respectively, encapsulate spool backstay is inserted respectively in 2 encapsulate valve core rod locating holes, encapsulate spool backstay and encapsulate valve core rod locating hole interference fit, guarantee backstay and spool accurate positioning; Again the encapsulate spool of working good and backstay ligand level are put into spool gel-injection mould counterdie, 4 encapsulate spool levels contained by it put into 4 spool counterdie die cavities, according to encapsulate thickness, determine that encapsulate spool and drag cavity gap thickness are 2-3mm; For guaranteeing that encapsulate spool and drag cavity gap thickness are evenly and spool horizontal positioned, trapezoidal for spool locating piece 3 is inserted in 2 trapezoidal locating slots of encapsulate spool respectively, put into the trapezoidal locating piece groove of spool again and keep tight fit, fit clearance is no more than 0.3mm; By the upper and lower mould of rubber automatic injection transfer molding machine band movable valve plug gel-injection mould, spool gel-injection mould patrix and spool gel-injection mould counterdie are located matched moulds by spool upper and lower mould locating hole latch, 4 encapsulate spools fall into model cavity on spool counterdie die cavity and spool respectively, the EPDM rubber of liquid liquid is injected by EPDM spool hole for injecting glue, wherein the EPDM rubber injection rubber injecting glue blind hole of operative liquid liquid inserts each spool die cavity gap, makes the overall encapsulate of finished product EPDM rubber spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510012272.8A CN104626459A (en) | 2015-01-09 | 2015-01-09 | Rubber coating method for valve element of soft sealing gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510012272.8A CN104626459A (en) | 2015-01-09 | 2015-01-09 | Rubber coating method for valve element of soft sealing gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104626459A true CN104626459A (en) | 2015-05-20 |
Family
ID=53205916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510012272.8A Pending CN104626459A (en) | 2015-01-09 | 2015-01-09 | Rubber coating method for valve element of soft sealing gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104626459A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883198A (en) * | 2021-09-26 | 2022-01-04 | 株洲时代瑞唯减振装备有限公司 | Rigidity adjusting method and vulcanization method of concave hole elastic cushion |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3662460A (en) * | 1967-08-08 | 1972-05-16 | Westinghouse Electric Corp | Method of making a random wound encapsulated coil |
| GB1414554A (en) * | 1972-10-13 | 1975-11-19 | Scovill Manufacturing Co | Methods for making a rubber-covered tyre valve |
| CN101008660A (en) * | 2006-11-30 | 2007-08-01 | 联合汽车电子有限公司 | Glue-injection techniques method of phase sensor |
| CN101066723A (en) * | 2007-04-07 | 2007-11-07 | 兰州中顺石化产品销售有限公司 | Glue injecting and film forming method for stopping leak in tank |
| CN101865308A (en) * | 2010-02-23 | 2010-10-20 | 王宇光 | Rubber-injection sliding spool in pneumatic industry |
| CN201810830U (en) * | 2010-10-11 | 2011-04-27 | 芜湖市金贸流体科技股份有限公司 | Rubber-covered swing check valve |
| CN202805000U (en) * | 2012-08-16 | 2013-03-20 | 芜湖市金贸流体科技股份有限公司 | Machining locating device for imbedding and glue packaging of valve elements |
-
2015
- 2015-01-09 CN CN201510012272.8A patent/CN104626459A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3662460A (en) * | 1967-08-08 | 1972-05-16 | Westinghouse Electric Corp | Method of making a random wound encapsulated coil |
| GB1414554A (en) * | 1972-10-13 | 1975-11-19 | Scovill Manufacturing Co | Methods for making a rubber-covered tyre valve |
| CN101008660A (en) * | 2006-11-30 | 2007-08-01 | 联合汽车电子有限公司 | Glue-injection techniques method of phase sensor |
| CN101066723A (en) * | 2007-04-07 | 2007-11-07 | 兰州中顺石化产品销售有限公司 | Glue injecting and film forming method for stopping leak in tank |
| CN101865308A (en) * | 2010-02-23 | 2010-10-20 | 王宇光 | Rubber-injection sliding spool in pneumatic industry |
| CN201810830U (en) * | 2010-10-11 | 2011-04-27 | 芜湖市金贸流体科技股份有限公司 | Rubber-covered swing check valve |
| CN202805000U (en) * | 2012-08-16 | 2013-03-20 | 芜湖市金贸流体科技股份有限公司 | Machining locating device for imbedding and glue packaging of valve elements |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883198A (en) * | 2021-09-26 | 2022-01-04 | 株洲时代瑞唯减振装备有限公司 | Rigidity adjusting method and vulcanization method of concave hole elastic cushion |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150520 |