CN104015296A - Polytetrafluoroethylene valve seat injection moulding device - Google Patents
Polytetrafluoroethylene valve seat injection moulding device Download PDFInfo
- Publication number
- CN104015296A CN104015296A CN201410241795.5A CN201410241795A CN104015296A CN 104015296 A CN104015296 A CN 104015296A CN 201410241795 A CN201410241795 A CN 201410241795A CN 104015296 A CN104015296 A CN 104015296A
- Authority
- CN
- China
- Prior art keywords
- valve seat
- glue
- hole
- polytetrafluoroethylene
- adhesive
- 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.)
- Granted
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
- B29C45/03—Injection moulding apparatus
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a 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
- B29C45/14—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Valve Housings (AREA)
Abstract
The invention relates to the technical field of valve manufacturing, and particularly relates to a polytetrafluoroethylene valve seat injection moulding device. The device comprises a pedestal, an adhesive box and a cover. The middle of the pedestal is provided with a mould core. A gap is left between the pedestal and the mould core. The circumference of the upper surface of the pedestal is provided with a plurality of first adhesive injecting holes. The first adhesive injecting holes are communicated with second adhesive injecting holes in the inner wall of the pedestal. The adhesive box is buckled on the pedestal. The bottom surface of the adhesive box is provided with third adhesive injecting holes corresponding to the first adhesive injecting holes. The cover and the upper part of the adhesive box are buckled so that a polytetrafluoroethylene valve seat body is closely adhered to the outer wall of the mould core and the adhesive box is pressed on the pedestal. Rubber is added into the adhesive box. Finally the adhesive box is covered with the cover. After the rubber in the adhesive box is melted, the rubber flows from the third adhesive injecting holes to the first adhesive injecting holes along with the stress on the cover, finally flows from the second adhesive injecting holes to a space hole between the valve seat body and a backrest, and is cooled, fixed and formed. The forming effects are good and the operation is simple.
Description
Technical field
The present invention relates to technical field of valve manufacturing, relate in particular to a kind of polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus.
Background technology
Valve is the control assembly in fluid delivery system, has cut-off, adjusting, water conservancy diversion, prevents the functions such as adverse current, voltage stabilizing, shunting or overflow pressure relief.For the valve of fluid control systems, from the simplest stop valve to very complicated robot control system(RCS) various valves used, its kind and specification are quite various.Valve can be used for controlling flowing of all kinds fluids such as air, water, steam, various Korrosionsmedium, mud, oil product, liquid metal and radiating medium.Valve is also divided into cast iron valve according to material, cast steel valve, stainless valve, chrome-molybdenum steel valve, Chrominm-molybdenum-vanadium steel valve, dual phase steel valve, Plastic valve, the nonstandard customized valve material that waits.
At present, the sealing condition of the sealing surface of seat of valve plays vital effect to valve, and between the valve seat of valve and valve plate, a lot of teflon and valve plates of adopting seal, and are soft seals.Because valve plate is main working parts, open and close frequently and cause between sealing surface of seat wearing and tearing larger, valve is short service life, and maintenance cost is high.
PTFE, i.e. polytetrafluoroethylene (PTFE), has the feature of antiacid alkali resistant, anti-various organic solvents, is dissolved in hardly all solvents, and meanwhile, polytetrafluoroethylene (PTFE) has resistant to elevated temperatures feature, and its coefficient of friction is extremely low.PPS plastics, i.e. polyphenylene sulfide, it is a kind of thermoplastic special engineering plastic of excellent combination property, its outstanding feature is high temperature resistant, corrosion-resistant and superior mechanical performance.Existing polytetrafluoroethylene (PTFE) valve seat is mainly by valve seat body, rubber layer and backrest, rubber layer is between backrest layer and valve seat body, at present, in the time manufacturing polytetrafluoroethylene (PTFE) valve seat, be mainly first sheet rubber to be filled between valve seat body and backrest, be put in vulcanizer and vulcanize again, this kind of valve seat inner rubber skewness between valve seat body and backrest that mode supports, affects product quality.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned technology, and a kind of polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus is provided, rapid shaping, rubber layer is evenly distributed between valve seat body and backrest.
The present invention for achieving the above object, by the following technical solutions: a kind of polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus, it is characterized in that: comprise base, glue case and gland, described base middle part is provided with core rod, between described base and described core rod, leave gap, the upper surface ring week of described base is provided with several the first hole for injecting glue, and described hole for injecting glue is communicated with the second hole for injecting glue on described base inner wall; Described glue box fastener is combined on described base, and described glue case bottom surface is provided with three hole for injecting glue corresponding with described the first hole for injecting glue; Described gland and described glue upper box part fasten.
Preferably, the side of described base, glue case and gland is respectively equipped with handle.Because several component weight of this device are all at 20-30kg, handle is set can conveniently be transported.
Preferably, the bilateral symmetry of described base is provided with threaded block, and described bearing block is provided with screw rod, and described screw rod is through described base.Screw rod can be through the axis hole of valve seat, by the axis hole shutoff on valve seat and backrest, prevents that rubber from blocking axis hole in the time of sulfuration.
Preferably, described screw rod is provided with fixing hole.Because this device after sulfuration can be fixed by rubber, in order to be difficult to that screw rod is taken out, can insert a lever by fixing hole, can be convenient to rotating screw bolt by lever, thereby screw rod is exited from axis hole.
Preferably, described base top loop week is provided with Ka Tai, and described Ka Tai coordinates with described glue lower box part.Can be adjacent to closely with glue case by card platform, prevent that rubber from overflowing.
Preferably, described glue upper box part ring week is provided with draw-in groove, and described draw-in groove coordinates with described gland.Can be adjacent to closely with gland by draw-in groove, prevent that rubber from overflowing.
The invention has the beneficial effects as follows: the present invention can carry out injecting glue to the polytetrafluoroethylene (PTFE) valve seat of composite construction, polytetrafluoroethylene (PTFE) valve seat body is close to the outer wall of core rod, critical the second hole for injecting glue losing money in a business on device of hole for injecting glue on backrest, backrest is close to the inwall of base, between valve seat body and backrest, form certain injection moulding space, glue case is pressed on base, closely fasten with base, to in glue case, put into rubber again, the most enough glands that covers, this mold is placed in vulcanizer and is vulcanized, after rubber in glue case melts along with the pressure of gland flows into the first hole for injecting glue with this from the 3rd hole for injecting glue, finally flow into the spatial hole between valve seat body and backrest from the second hole for injecting glue, cooling fixed-type, good forming effect, simple to operate.
Brief description of the drawings
Fig. 1 is the structural representation of base in the present invention;
Fig. 2 is the structural representation of glue case in the present invention;
Fig. 3 is the structural representation of gland in the present invention;
Fig. 4 is the structural representation of polyvinyl fluoride valve seat in the present invention.
Detailed description of the invention
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing and preferred embodiment.As shown in figures 1 and 3, a kind of polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus, comprise base 1, glue case 2 and gland 3, described base middle part is provided with core rod 4, between described base and described core rod, leave gap, the upper surface ring week of described base is provided with several the first hole for injecting glue 5, and described hole for injecting glue is communicated with the second hole for injecting glue 6 on described base inner wall; Described glue box fastener is combined on described base, described glue case bottom surface is provided with three hole for injecting glue 7 corresponding with described the first hole for injecting glue, in this device, the first hole for injecting glue and the second hole for injecting glue are communicated with, rubber can flow into the second hole for injecting glue from the first hole for injecting glue, and the position of the 3rd hole for injecting glue is corresponding with the position of the first hole for injecting glue, in the time of glue case and base fastening, the 3rd hole for injecting glue is just positioned at the top of the first hole for injecting glue, thereby the rubber in glue case can flow in the second hole for injecting glue along the 3rd hole for injecting glue.Described gland and described glue upper box part fasten.Because several component weight of this device are all at 20-30kg, for convenient transport, the side of described base, glue case and gland is respectively equipped with handle 8.One as this device is improved, and the bilateral symmetry of described base is provided with threaded block 9, and described bearing block is provided with screw rod 10, described screw rod is through described base, screw rod can be through the axis hole of valve seat, by the axis hole shutoff on valve seat and backrest, prevents that rubber from blocking axis hole in the time of sulfuration.Described screw rod is provided with fixing hole 11.Because this device after sulfuration can be fixed by rubber, in order to be difficult to that screw rod is taken out, can insert a lever by fixing hole, can be convenient to rotating screw bolt by lever, thereby screw rod is exited from axis hole.Described base top loop week is provided with card platform 12, and described Ka Tai coordinates with described glue lower box part.Can be adjacent to closely with glue case by card platform, prevent that rubber from overflowing.Described glue upper box part ring week is provided with draw-in groove 13, and described draw-in groove coordinates with described gland.Can be adjacent to closely with gland by draw-in groove, prevent that rubber from overflowing.
The present invention can carry out injecting glue to the polytetrafluoroethylene (PTFE) valve seat of composite construction 14, polytetrafluoroethylene (PTFE) valve seat body is close to the outer wall of core rod, critical the second hole for injecting glue losing money in a business on device of hole for injecting glue 18 on backrest 16, backrest is close to the inwall of base, between valve seat body 15 and backrest 16, form certain injection moulding space, glue case is pressed on base, closely fasten with base, rubber 17 will be put into again in glue case, the most enough glands that covers, this mold is placed in vulcanizer and is vulcanized, after rubber in glue case melts along with the pressure of gland flows into the first hole for injecting glue with this from the 3rd hole for injecting glue, finally flow into the spatial hole between valve seat body and backrest from the second hole for injecting glue, cooling fixed-type, good forming effect, simple to operate.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus, it is characterized in that: comprise base, glue case and gland, described base middle part is provided with core rod, between described base and described core rod, leave gap, the upper surface ring week of described base is provided with several the first hole for injecting glue, and described hole for injecting glue is communicated with the second hole for injecting glue on described base inner wall; Described glue box fastener is combined on described base, and described glue case bottom surface is provided with three hole for injecting glue corresponding with described the first hole for injecting glue; Described gland and described glue upper box part fasten.
2. polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus according to claim 1, is characterized in that: the side of described base, glue case and gland is respectively equipped with handle.
3. polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus according to claim 2, is characterized in that: the bilateral symmetry of described base is provided with threaded block, and described bearing block is provided with screw rod, and described screw rod is through described base.
4. polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus according to claim 3, is characterized in that: described screw rod is provided with fixing hole.
5. polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus according to claim 4, is characterized in that: described base top loop week is provided with Ka Tai, described Ka Tai coordinates with described glue lower box part.
6. polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus according to claim 5, is characterized in that: described glue upper box part ring week is provided with draw-in groove, and described draw-in groove coordinates with described gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410241795.5A CN104015296B (en) | 2014-05-30 | 2014-05-30 | Polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410241795.5A CN104015296B (en) | 2014-05-30 | 2014-05-30 | Polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104015296A true CN104015296A (en) | 2014-09-03 |
| CN104015296B CN104015296B (en) | 2017-07-11 |
Family
ID=51432444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410241795.5A Active CN104015296B (en) | 2014-05-30 | 2014-05-30 | Polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104015296B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3771764A (en) * | 1971-02-27 | 1973-11-13 | Naigai Rubber Ind Co Ltd | Method of producing the seat ring of a butterfly valve and the seat ring thereof |
| US3993092A (en) * | 1975-09-17 | 1976-11-23 | New Concepts, Inc. | Gate valve with replaceable liner |
| JPH02221774A (en) * | 1989-02-21 | 1990-09-04 | Tomoe Gijutsu Kenkyusho:Kk | Butterfly valve and manufacture thereof |
| US20020074040A1 (en) * | 2000-10-17 | 2002-06-20 | Schwarz Philip R. | Butterfly valve with passive-lubricated liner/seat |
| KR20070109577A (en) * | 2006-05-12 | 2007-11-15 | 이한흥 | The butterfly valve and it's manufacture method |
| JP2011144928A (en) * | 2011-02-03 | 2011-07-28 | Maezawa Ind Inc | Rubber lining forming method for butterfly valve |
| CN202045786U (en) * | 2011-03-21 | 2011-11-23 | 上海欣展橡胶有限公司 | Forming vulcanization die of butterfly valve seat |
| CN202213164U (en) * | 2011-08-23 | 2012-05-09 | 天津宏圣森泰科技有限公司 | Glue injection forming machine for rubber valve seat |
| CN203973912U (en) * | 2014-05-30 | 2014-12-03 | 天津鸿瑞橡胶有限公司 | Polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus |
-
2014
- 2014-05-30 CN CN201410241795.5A patent/CN104015296B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3771764A (en) * | 1971-02-27 | 1973-11-13 | Naigai Rubber Ind Co Ltd | Method of producing the seat ring of a butterfly valve and the seat ring thereof |
| US3993092A (en) * | 1975-09-17 | 1976-11-23 | New Concepts, Inc. | Gate valve with replaceable liner |
| JPH02221774A (en) * | 1989-02-21 | 1990-09-04 | Tomoe Gijutsu Kenkyusho:Kk | Butterfly valve and manufacture thereof |
| US20020074040A1 (en) * | 2000-10-17 | 2002-06-20 | Schwarz Philip R. | Butterfly valve with passive-lubricated liner/seat |
| KR20070109577A (en) * | 2006-05-12 | 2007-11-15 | 이한흥 | The butterfly valve and it's manufacture method |
| JP2011144928A (en) * | 2011-02-03 | 2011-07-28 | Maezawa Ind Inc | Rubber lining forming method for butterfly valve |
| CN202045786U (en) * | 2011-03-21 | 2011-11-23 | 上海欣展橡胶有限公司 | Forming vulcanization die of butterfly valve seat |
| CN202213164U (en) * | 2011-08-23 | 2012-05-09 | 天津宏圣森泰科技有限公司 | Glue injection forming machine for rubber valve seat |
| CN203973912U (en) * | 2014-05-30 | 2014-12-03 | 天津鸿瑞橡胶有限公司 | Polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104015296B (en) | 2017-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204717111U (en) | A kind of dual-piston structure cylinder for needle valve type hot runner system | |
| CN203973912U (en) | Polytetrafluoroethylene (PTFE) valve seat injection moulding apparatus | |
| CN104015296A (en) | Polytetrafluoroethylene valve seat injection moulding device | |
| CN106273211A (en) | Politef valve seat injection moulding apparatus | |
| EP3085511B1 (en) | Inverted-type hot runner system | |
| CN207893215U (en) | A kind of valve of leakproofness | |
| CN204403446U (en) | A kind ofly to shunt evenly, without the liquid cyclone of turbulent phenomenon | |
| CN102275256A (en) | Fully cooling floating type nozzle | |
| JP2015175514A (en) | soft seal gate valve | |
| CN203979557U (en) | Teflon skeleton valve seat | |
| CN206234464U (en) | Novel valve seat | |
| CN108561580A (en) | A kind of wear-resistant embedded ceramic ball valve | |
| CN110118264A (en) | A method of the high-performance expansion sluice valve with back seal function and replacement filler | |
| CN205235076U (en) | Transfer pump and waterproof thereof | |
| CN202852017U (en) | Teflon valve seat suite | |
| CN204042018U (en) | For fluid control device and the linkage structure of nitration reaction material | |
| CN214197261U (en) | Redundant double-valve switch | |
| CN204452981U (en) | A kind of valve fittings automated packaging equipment | |
| KR20140089705A (en) | Rubber diaphragm having fluoropolymer coat layer and Method for manufacturing the same | |
| CN201930981U (en) | Cooling system of extrusion wheel of continuous extrusion machine | |
| CN217583284U (en) | Three-way valve and pouring system for dry-type transformer | |
| CN103016764A (en) | Method for manufacturing high-tightness hard sealing water supply and drainage gate valve | |
| CN203585363U (en) | Wafer butterfly valve with closed leaf-proof valve seat | |
| CN202252101U (en) | Fluorine lining diaphragm valve | |
| CN205605890U (en) | Unidirectional flux valve is easily changed to baffle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |