CN104527057A - Method and equipment for processing polytetrafluoroethylene sealing ring - Google Patents
Method and equipment for processing polytetrafluoroethylene sealing ring Download PDFInfo
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- CN104527057A CN104527057A CN201410758435.2A CN201410758435A CN104527057A CN 104527057 A CN104527057 A CN 104527057A CN 201410758435 A CN201410758435 A CN 201410758435A CN 104527057 A CN104527057 A CN 104527057A
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Abstract
The invention discloses a method for processing a polytetrafluoroethylene sealing ring. The method comprises the following steps: 1) setting a hot melting mold, wherein the hot melting mold comprises an upper mold and a lower mold, a segment of die cavity is formed between the upper mold and the lower mold, and the end face of the segment of die cavity is matched with the end face of a sealing ring needing to be welded; setting a welding mechanism on the hot melting mold, wherein the welding mechanism comprises a heating device corresponding to the die cavity, a filler area and a material pressing device; 2) putting both ends of a cut sealing strip in the die cavity of the hot melting mold according to the set specification of the sealing ring, and corresponding the butt joint sites at the both ends of the sealing strip to the welding mechanism; 3) putting corresponding modified fillers in the filler area of the welding mechanism, heating the filler area through the heating device, pressing the filler area through the material pressing device after reaching a set temperature, and maintaining the pressure for a period of time until the butt joint sites at the both ends of the sealing strip are fully fused with the modified fillers to form the sealing ring. The invention further discloses equipment for implementing the method.
Description
Technical field
The present invention relates to teflin ring processing, be specifically related to teflin ring processing method and equipment thereof.
Background technology
Development of modern industry, along with technical merit constantly rises, big machinery equipment is more and more universal, and equipment does larger and larger, with the requirement of satisfied different markets high-quality.The operation etc. that is shaping, equipment that in industrial production, hydraulic jack is product provides huge energy; For meeting more and more higher briquetting pressure, or other requirements, hydraulic jack is increasing.Sealing ring plays most important effect in the normal use procedure of hydraulic cylinder, but traditional teflin ring processing technology is all polytetrafluoroethylene (PTFE) materials in the tube of colding pressing, sinter molding, then by turnery processing, one set of die often can only process limited several specification products.Whole seal processing matched equipment requires higher, and equipment, die cost have high input.
Particularly, when the shape of cross section of teflin ring is non-regular shape, and when requirement on machining accuracy is higher, the working (machining) efficiency of conventional method and equipment and formed precision, all can not reach requirement.Therefore, research and develop that a kind of working (machining) efficiency is high, the fast and process and apparatus that precision is high of shaping speed, just become very urgent.
Summary of the invention
The present invention be directed to deficiency of the prior art, and provide a kind of and significantly can promote the teflin ring processing method of working (machining) efficiency and formed precision and implement the equipment of the method.
For achieving the above object, the technical solution used in the present invention is:
A kind of teflin ring processing method, it is characterized in that, it comprises the steps:
1) hot melt mould is set, this hot melt mould comprises upper die and lower die, be formed with a segment type chamber between this upper and lower mould, the end face in this segment type chamber with need the sealing ring end face of welding suitable (i.e. the cross section of die cavity and the cross section of sealing ring similar, identical); On described hot melt mould, arrange Welding mechanism, this Welding mechanism comprises the heater corresponding with described die cavity, filler region and material pressing device;
2) by the specification of setting sealing ring, the sealing strip two cut is put into the die cavity of hot melt mould, and make the joint at its two ends corresponding with described Welding mechanism;
3) corresponding Modification material is put in the filler region of described Welding mechanism, heating devices heat filler region, after design temperature to be achieved, material pressing device pressurization filler region, and keep pressure a period of time, until the joint at sealing strip two ends and Modification material fuse mutually, form sealing ring.
Further, it also comprises the steps:
4) cooling die, cooling temperature 150-250 DEG C, after hot melt mould cools to design temperature, opening mold, takes out sealing ring, then carries out polishing to the spue line of sealing ring, checks that joint is whether firm, has pore-free etc. bad.
Further, step 3) in, described design temperature is: PTFE, PFA resin modified inserts 320-420 DEG C, PVDF resin modified inserts 180-280 DEG C; The process in described pressurization filler region, for pressurize gradually, keeps pressure to be unit area pressure 5-30MPa; Determine that the dwell time is 2-20min according to the setting specification of sealing ring and the height of design temperature.
Further, step 1) in, arrange locating slot in the die cavity two ends of described hot melt mould, the end face of this locating slot is also suitable with the end face of sealing ring; Step 2) in, also comprise the steps: the locating slot sealing strip cut being put into hot melt mold cavity two ends.
Further, step 1) in, also comprise the steps, on described hot melt mould, arrange clamping mechanism, this clamping mechanism comprises the guide pillar be located between upper and lower mould, and the mould lock-up cylinder be connected with patrix; Rapid 2) in, also comprise the steps: that described mould lock-up cylinder drives on patrix to move, carry out die sinking, by the specification of setting sealing ring, the sealing strip two cut is put into the die cavity of hot melt mould, and making the joint at its two ends corresponding with described Welding mechanism, described mould lock-up cylinder drives patrix to move down, and carries out locked mode.
Further, step 1) in, described heater comprises is located at thermocouple around filler region and temp probe, is heated filler region by heat hot fusible pattern tool; Described material pressing device comprises the binder cylinder being located at filler overlying regions, the binder slide block suitable with filler region and rise and fall limit assembly, the shape of described binder slide block lower shape and sealing ring is suitable, guarantees that the cross section of sealing ring is consistent with the cross section of the sealing ring of setting specification.
A kind of teflin ring process equipment implementing described method, comprise hot melt mould and be located at the Welding mechanism on this hot melt mould, it is characterized in that, described hot melt mould comprises upper die and lower die, be formed with a segment type chamber between this upper and lower mould, the end face in this segment type chamber with need the sealing ring end face of welding suitable; Described Welding mechanism comprises the heater corresponding with described die cavity, filler region and material pressing device.
Further, the die cavity two ends of described hot melt mould are provided with locating slot, and the end face of this locating slot is also suitable with the end face of sealing ring.
Further, described hot melt mould is provided with clamping mechanism, and this clamping mechanism comprises the guide pillar be located between upper and lower mould, and the mould lock-up cylinder be connected with patrix.
Further, described heater comprises is located at thermocouple around filler region and temp probe, is heated filler region by heat hot fusible pattern tool; Described material pressing device comprises the binder cylinder being located at filler overlying regions, the binder slide block suitable with filler region and rise and fall limit assembly, the shape of described binder slide block lower shape and sealing ring is suitable, guarantees that the cross section of sealing ring is consistent with the cross section of the sealing ring of setting specification.
The invention has the advantages that: the method and apparatus that the present invention is matched with binder, hot melt by mold cavity, significantly improve working (machining) efficiency and the formed precision of product, and make same money semi-finished product (blank) can be used in the processing of a greater variety of finished product, breach traditional teflin ring and add man-hour, the restriction of fixing a few money products can only be processed a semi-finished product (as materials in the tube), substantially reduce manufacturing process, reduce manufacturing cost.Quantity is few on the market, batch is little, kind is many, specification is assorted relatively for existing large gauge sealing ring product, mould supporting during traditional mode of production, equipment, semi-finished product, product cost are high, the manufacturing cycle is long, formed precision is not high, therefore easily cause finished product to wait for a long time or overstock; The present invention is by hot high pressure welding, break away from the deficiency of traditional tetrafluoro class sealing ring product turning type processing method, effectively improve the flexibility of tetrafluoro class large gauge sealing ring Product processing, can produce by integrated innovation, and improve the formed precision of product, reduce the manufacturing cycle, decrease enterprise's mould, semi-finished product, finished goods inventory quantity, be suitable for the manufacture of large gauge sealing ring product of small lot, multi items, non-standard, non-regular shape.
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in more detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of polytetrafluoroethylene (PTFE) thick product shaping equipment;
Fig. 2 is the cross sectional representation of Fig. 1;
Fig. 3 is the first common co-axial seal circle end face structure schematic diagram;
Fig. 4 is the second common co-axial seal circle end face structure schematic diagram;
Fig. 5 is the third common co-axial seal circle end face structure schematic diagram;
In figure: patrix 1; Counterdie 2; Die cavity 3; Filler region 4; Guide pillar 5; Mould lock-up cylinder 6; Thermocouple 7; Temp probe 8; Binder cylinder 9; Binder slide block 10; Modification material 11.
Detailed description of the invention
The teflin ring processing method that the present embodiment provides, it comprises the steps:
1) hot melt mould is set, this hot melt mould comprises patrix 1, counterdie 2, be formed with a segment type chamber 3 between this upper and lower mould 1,2, the end face in this segment type chamber 3 with need the sealing ring end face of welding suitable (i.e. the cross section of die cavity and the cross section of sealing ring similar, identical); On described hot melt mould, arrange Welding mechanism, this Welding mechanism comprises the heater corresponding with described die cavity 3, filler region 4 and material pressing device; Arrange locating slot in die cavity 3 two ends of described hot melt mould, the end face of this locating slot is also suitable with the end face of sealing ring; On described hot melt mould, arrange clamping mechanism, this clamping mechanism comprises the guide pillar 5 be located between upper and lower mould 1,2, and the mould lock-up cylinder 6 be connected with patrix 1.Wherein, described heater comprises is located at thermocouple 7 around filler region 4 and temp probe 8, is heated filler region 4 by heat hot fusible pattern tool; Described material pressing device comprises is located at the binder cylinder 9 above filler region 4, the binder slide block 10 suitable with filler region 4 and rise and fall limit assembly, the shape of described binder slide block 10 lower shape and sealing ring is suitable, guarantees that the cross section of sealing ring is consistent with the cross section of the sealing ring of setting specification.
2) described mould lock-up cylinder 6 drives on patrix 1 and moves, carry out die sinking, by the specification (size of setting sealing ring, shape, width etc., it has corresponding die cavity), the sealing strip cut is put into the locating slot at hot melt mold cavity two ends, the sealing strip two cut is put into the die cavity 3 of hot melt mould simultaneously, and (docking of both ends of the surface can closed butt joint to make the joint at its two ends, also can interspace a little in advance, depend on the circumstances, interspace a little in advance, more be conducive to welding) corresponding with described Welding mechanism, described mould lock-up cylinder 6 drives patrix 1 to move down, carry out locked mode.
3) corresponding Modification material 11 is put in the filler region 4 of described Welding mechanism, heating devices heat filler region 4, after design temperature to be achieved, material pressing device pressurization filler region 4, and keep pressure a period of time, until the joint at sealing strip two ends and Modification material 11 fuse mutually, form sealing ring.Wherein, described design temperature is: PTFE, PFA resin modified inserts 320-420 DEG C, PVDF resin modified inserts 180-280 DEG C; The process in described pressurization filler region, for pressurize gradually, keeps pressure to be unit area pressure 5-30MPa; Determine that the dwell time is 2-20min according to the setting specification of sealing ring and the height of design temperature.
4) cooling die, cooling temperature 150-250 DEG C, after hot melt mould cools to design temperature, opening mold, takes out sealing ring, then carries out polishing to the spue line of sealing ring, checks that joint is whether firm, has pore-free etc. bad.
Implement a teflin ring process equipment for described method, comprise hot melt mould and be located at the Welding mechanism on this hot melt mould; Described hot melt mould comprises patrix 1, counterdie 2, is formed with a segment type chamber 3 between this upper and lower mould 1,2, the end face in this segment type chamber 3 with need the sealing ring end face of welding suitable; Described Welding mechanism comprises the heater corresponding with described die cavity 3, filler region 4 and material pressing device.Die cavity 3 two ends of described hot melt mould are provided with locating slot, and the end face of this locating slot is also suitable with the end face of sealing ring.Described hot melt mould is provided with clamping mechanism, and this clamping mechanism comprises the guide pillar 5 be located between upper and lower mould 1,2, and the mould lock-up cylinder 6 be connected with patrix 1.
Particularly, described heater comprises is located at thermocouple 7 around filler region 4 and temp probe 8, is heated filler region 4 by heat hot fusible pattern tool; Described material pressing device comprises is located at the binder cylinder 9 above filler region 4, the binder slide block 10 suitable with filler region 4 and rise and fall limit assembly, the shape of described binder slide block 10 lower shape and sealing ring is suitable, guarantees that the cross section of sealing ring is consistent with the cross section of the sealing ring of setting specification.
Working (machining) efficiency provided by the invention improves more than 3 times than tradition, and formed product precision improves more than 2 times, and the manufacturing cycle shortens more than 5 days, and integrated cost reduces by more than 20%, has higher practical value.
The present invention is not limited to above-mentioned embodiment, adopts or approximation method identical with the above embodiment of the present invention or structure, and other teflin ring processing method and equipment of obtaining, all within protection scope of the present invention.
Claims (10)
1. a teflin ring processing method, is characterized in that, it comprises the steps:
1) arrange hot melt mould, this hot melt mould comprises upper die and lower die, is formed with a segment type chamber between this upper and lower mould, the end face in this segment type chamber with need the sealing ring end face of welding suitable; On described hot melt mould, arrange Welding mechanism, this Welding mechanism comprises the heater corresponding with described die cavity, filler region and material pressing device;
2) by the specification of setting sealing ring, the sealing strip two cut is put into the die cavity of hot melt mould, and make the joint at its two ends corresponding with described Welding mechanism;
3) corresponding Modification material is put in the filler region of described Welding mechanism, heating devices heat filler region, after design temperature to be achieved, material pressing device pressurization filler region, and keep pressure a period of time, until the joint at sealing strip two ends and Modification material fuse mutually, form sealing ring.
2. teflin ring processing method according to claim 1, it is characterized in that, it also comprises the steps:
4) cooling die, cooling temperature 150-250 DEG C, after hot melt mould cools to design temperature, opening mold, takes out sealing ring, then carries out polishing to the spue line of sealing ring.
3. teflin ring processing method according to claim 1, is characterized in that, step 3) in, described design temperature is: PTFE, PFA resin modified inserts 320-420 DEG C, PVDF resin modified inserts 180-280 DEG C; The process in described pressurization filler region, for pressurize gradually, keeps pressure to be unit area pressure 5-30MPa; Determine that the dwell time is 2-20min according to the setting specification of sealing ring and the height of design temperature.
4. teflin ring processing method according to claim 1, is characterized in that, step 1) in, arrange locating slot in the die cavity two ends of described hot melt mould, the end face of this locating slot is also suitable with the end face of sealing ring; Step 2) in, also comprise the steps: the locating slot sealing strip cut being put into hot melt mold cavity two ends.
5. teflin ring processing method according to claim 1, it is characterized in that, step 1) in, also comprise the steps, on described hot melt mould, clamping mechanism is set, this clamping mechanism comprises the guide pillar be located between upper and lower mould, and the mould lock-up cylinder be connected with patrix; Rapid 2) in, also comprise the steps: that described mould lock-up cylinder drives on patrix to move, carry out die sinking, by the specification of setting sealing ring, the sealing strip two cut is put into the die cavity of hot melt mould, and making the joint at its two ends corresponding with described Welding mechanism, described mould lock-up cylinder drives patrix to move down, and carries out locked mode.
6. teflin ring processing method according to claim 1, is characterized in that, step 1) in, described heater comprises is located at thermocouple around filler region and temp probe, is heated filler region by heat hot fusible pattern tool; Described material pressing device comprises the binder cylinder being located at filler overlying regions, the binder slide block suitable with filler region and rise and fall limit assembly, the shape of described binder slide block lower shape and sealing ring is suitable, guarantees that the cross section of sealing ring is consistent with the cross section of the sealing ring of setting specification.
7. one kind implements the claims the teflin ring process equipment of one of 1 to 6 described method, comprise hot melt mould and be located at the Welding mechanism on this hot melt mould, it is characterized in that, described hot melt mould comprises upper die and lower die, be formed with a segment type chamber between this upper and lower mould, the end face in this segment type chamber with need the sealing ring end face of welding suitable; Described Welding mechanism comprises the heater corresponding with described die cavity, filler region and material pressing device.
8. teflin ring process equipment according to claim 7, is characterized in that, the die cavity two ends of described hot melt mould are provided with locating slot, and the end face of this locating slot is also suitable with the end face of sealing ring.
9. teflin ring process equipment according to claim 7, is characterized in that, described hot melt mould is provided with clamping mechanism, and this clamping mechanism comprises the guide pillar be located between upper and lower mould, and the mould lock-up cylinder be connected with patrix.
10. teflin ring process equipment according to claim 7, is characterized in that, described heater comprises is located at thermocouple around filler region and temp probe, is heated filler region by heat hot fusible pattern tool; Described material pressing device comprises the binder cylinder being located at filler overlying regions, the binder slide block suitable with filler region and rise and fall limit assembly, the shape of described binder slide block lower shape and sealing ring is suitable, guarantees that the cross section of sealing ring is consistent with the cross section of the sealing ring of setting specification.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410758435.2A CN104527057B (en) | 2014-12-10 | 2014-12-10 | Method and equipment for processing polytetrafluoroethylene sealing ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410758435.2A CN104527057B (en) | 2014-12-10 | 2014-12-10 | Method and equipment for processing polytetrafluoroethylene sealing ring |
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| CN104527057A true CN104527057A (en) | 2015-04-22 |
| CN104527057B CN104527057B (en) | 2017-05-10 |
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| CN201410758435.2A Active CN104527057B (en) | 2014-12-10 | 2014-12-10 | Method and equipment for processing polytetrafluoroethylene sealing ring |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108162281A (en) * | 2017-12-25 | 2018-06-15 | 浙江嘉益保温科技股份有限公司 | A kind of Silica Surface printing technology |
| CN111184545A (en) * | 2020-01-08 | 2020-05-22 | 浙江微度医疗器械有限公司 | Device and method for forming fishbone on suture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1380204A (en) * | 2001-04-06 | 2002-11-20 | 海尼格斯弹性体及塑料技术两合公司 | Method and device for butt-jointing section made of elastic material |
| JP2004009318A (en) * | 2002-06-03 | 2004-01-15 | Yamatake Corp | Fluororesin joint and thermally fusion-bonding method for fluororesin material |
| CN103072275A (en) * | 2013-01-28 | 2013-05-01 | 无锡市祥健四氟制品有限公司 | Preparation method of ultra-large polytetrafluoroethylene seal ring |
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2014
- 2014-12-10 CN CN201410758435.2A patent/CN104527057B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1380204A (en) * | 2001-04-06 | 2002-11-20 | 海尼格斯弹性体及塑料技术两合公司 | Method and device for butt-jointing section made of elastic material |
| JP2004009318A (en) * | 2002-06-03 | 2004-01-15 | Yamatake Corp | Fluororesin joint and thermally fusion-bonding method for fluororesin material |
| CN103072275A (en) * | 2013-01-28 | 2013-05-01 | 无锡市祥健四氟制品有限公司 | Preparation method of ultra-large polytetrafluoroethylene seal ring |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108162281A (en) * | 2017-12-25 | 2018-06-15 | 浙江嘉益保温科技股份有限公司 | A kind of Silica Surface printing technology |
| CN111184545A (en) * | 2020-01-08 | 2020-05-22 | 浙江微度医疗器械有限公司 | Device and method for forming fishbone on suture |
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| CN104527057B (en) | 2017-05-10 |
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Effective date of registration: 20170330 Address after: 523000 Guangdong city in Dongguan Province town of Liaobu Southern China Industrial City Golden Pond community Fu Road No. 17 Applicant after: CLIMAX TECHNOLOGY CO.,LTD. Address before: 523000 Liaobu City, Dongguan Province under the town of Ling Ling Industrial Zone Applicant before: DONGGUAN XINZHI SEALING TECHNOLOGY CO.,LTD. |
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Address after: No.17, Jinfu Road, South China Industrial City, Tangbian community, Liaobu Town, Dongguan City, Guangdong Province, 523000 Patentee after: Guangdong Clemens Intelligent Technology Co.,Ltd. Address before: No.17, Jinfu Road, South China Industrial City, Tangbian community, Liaobu Town, Dongguan City, Guangdong Province, 523000 Patentee before: CLIMAX TECHNOLOGY CO.,LTD. |
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