CN1772467A - Simple isostatic pressing device and its application - Google Patents
Simple isostatic pressing device and its application Download PDFInfo
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- CN1772467A CN1772467A CN 200510061498 CN200510061498A CN1772467A CN 1772467 A CN1772467 A CN 1772467A CN 200510061498 CN200510061498 CN 200510061498 CN 200510061498 A CN200510061498 A CN 200510061498A CN 1772467 A CN1772467 A CN 1772467A
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Abstract
The simple isostatic pressing device includes closed cavity formed with the casing and the piston, cantilever rack and electric heater inside the cavity, external temperature controlling instrument connected via cable to the electric heater, sealing part in the contact between the piston and the casing, intake valve and discharge valve set on the piston, temperature sensor and pressure sensor fixed onto the casing or the piston, and computer, to which the signal lines of the temperature sensor and the pressure sensor are connected. The present invention has compact structure and simple plunger structure capable of realizing all the functions of cold isostatic pressure and hot isostatic pressure, and may be used in mass production of dense and beautiful plastic, gypsum and ceramic powder products. In addition, the present invention may be also used in repairing inside faults of some products to prolong their service life, and may have linear loading and temperature change for expanded application fields.
Description
Technical field
The present invention relates to a kind of simple isostatic pressing device and application thereof, especially prepare the isopressing device and the application of medical molded item and repairing plastic goods.
Background technology
Deng static pressure is a kind of technology that develops in field of powder metallurgy.The advantage of this technology is: product density height, Density Distribution are even; Can make the bigger product of draw ratio; Can produce the part of complex-shaped and near clean shape; Help handling toxic material etc.Because therefore the unequal problem of properties of product that it has overcome the existing pressure inequality of prior powder metallurgy methods such as mechanical pressure moulding and has caused has thus obtained extensive use in fields such as material bonding, powder metallurgy, powder moulding, foundry goods processing.But because general isopressing device apparatus expensive, bulky often, make isostatic pressing technology particularly the application of hot isostatic pressing technique be very limited.
Traditional plastics artificial tooth is made the thermal response methods of forming that adopt more, comprises that the conversion of formpiston former, plastic monomer are synthetic, steps such as engraving and polishing.The obvious deficiency that this method exists is that the intensity of artificial tooth is not high, postprocessing working procedures is complicated, the part special construction is difficult to realize.When preparing some complex-shaped product, have equally that die cost is high, mold filling is uneven and problem such as product quality is coarse with methods such as injection mouldings.Static pressure methods such as employing are expected to overcome these deficiencies, the preparation quality product.
A lot of thermoplastics in storage and use, because the influence of stress and environment tends to the macroscopic mechanics crackle on surface appearance " stress whitening " phenomenon or similar pottery surface, are called crazing.Crazing may develop into the crack under bigger external force effect, finally make material that fracture and destruction are taken place.The development of crazing is a reversible process normally, and under pressure or after being warmed up to vitrification point, because the raising of high polymer main chain mobility, crazing can bounce back even disappear.And under the condition that suitably heats up, goods are applied isostatic pressure, and neither can destroy the original shape and the structure of material, eliminate microdefects such as material internal crazing or hole again easily, use thereby make product or element recover normal.
Summary of the invention
The purpose of this invention is to provide a kind of simple isostatic pressing device and application thereof that is applicable to medical molded item of preparation and repairing plastic goods.
Simple isostatic pressing device of the present invention, comprise the airtight cavity volume that constitutes by housing and piston, be provided with cantilever support and electric heater unit in the cavity volume, the heating cable of electric heater unit is drawn housing and is linked to each other with temperature controller, on the contact-making surface of piston and inner walls, be provided with seal, piston is provided with air intake valve and drain tap, is fixed with temperature sensor and pressure sensor on housing or the piston, and the holding wire of temperature sensor and pressure sensor is drawn housing and linked to each other with computer.
Apparatus of the present invention are used to prepare the plastics artificial tooth, joint prosthesis, during the first-class medical molded item of artifical bone, with clay or high sticking silicon rubber is moulage, adopt thermosetting plastics or thermoplastic elastomer resin to do shaping block as material, with emulsion layer parcel mould and be suspended from the support in the isopressing device, stuffing pressure medium in airtight cavity volume, medium can be a silicone oil, castor oil, atoleine, air, nitrogen etc., promote piston from the outside and mould is applied uniform pressure by the material universal testing machine by medium, be removed mould after the product pre-profiling, then first finished product is reattached on the isopressing device medium-height trestle, by temperature control instrument control electric heater unit medium is heated, signal feedback by the pressure and temperature sensor is controlled required temperature and pressure condition by computer program, under the heating pressurized conditions, solidify one-step shaping.For cavity in the goods or pore structure, fill with high temperature resistant or low melting material, after moulding, utilize physical method or intensification fusion to remove, also can be in the cavity of medical material direct embedding medicinal material.Specious through the product that legal system thus gets, fine and close durable, good biocompatibility, and include the medicine storage cavity body, light, deodorization.
When apparatus of the present invention were applied to repair the plastic products of fatigue damage, the employing air was a pressure medium, and plastic products to be repaired are hung on the support in the isopressing device, and the back of suitably heating up applies external pressure by press or Material Testing Machine and protects and carries a certain hour and get final product.Promote piston from the outside and change pressure medium by the material universal testing machine, regulate medium temperature, control required temperature and pressure condition by computer program by the signal feedback of pressure and temperature sensor by temperature control instrument and electric heater unit.Can eliminate microdefects such as material internal crazing or hole thus, make plastic products recover normal.Compare other specially designed special pressure container, device involved in the present invention not only succinctly but also easy cleaning.
Apparatus of the present invention compact conformation, realized the repertoire of static pressure such as isostatic cool pressing and temperature with simple piston structure, can be used for producing in batches some densifications, plastics, gypsum and porcelain powder product attractive in appearance, and the internal flaw that can repair some goods prolongs its service life, because it can linearly load and heating and cooling, further expanded the application of isostatic pressing technology simultaneously.
Description of drawings
Fig. 1 is the structural representation of simple isostatic pressing device of the present invention.
The specific embodiment
With reference to Fig. 1, simple isostatic pressing device of the present invention comprises the airtight cavity volume that is made of housing 1 and piston 2, and housing 1 can be an overall structure, perhaps is made up of base 5 and seamless steel pipe thread connection as shown in the figure, and RUBBER O RunddichtringO 6 is set on contact-making surface.Be provided with cantilever support 9 and electric heater unit 8 in the cavity volume, the heating cable of electric heater unit 8 is drawn housing and is linked to each other with temperature controller 7, be provided with seal 10 on the contact-making surface of piston 2 and inner walls, seal generally is made up of the O RunddichtringO and the support ring that are embedded in piston 2 circumferential slots.Draw ring 12 is housed, the conveniently assemble and disassemble piston on piston rod.Piston 2 is provided with air intake valve 11 and drain tap 14.In the diagram instantiation, outside housing, be surrounded by collet 3 prevent to dispel the heat too fast, respectively fixation pressure sensor 4 and temperature sensor 13 on housing or the piston, the holding wire of temperature sensor and pressure sensor is drawn housing 1 and is linked to each other with computer.
Embodiment 1: produce plastics artificial tooth, joint prosthesis or the first-class medical molded item of artifical bone.
When making artificial tooth, with clay or high sticking silicon rubber is moulage, obtain the die cavity of required artificial tooth, corona, inlay even denture fixing device, the profile of mould is spheroid or spheroid, thermosetting plastics or thermoplastic elastomer resin molding powder (as aminoplast or phenoplasts etc.) are piled with die cavity, outside mould, be covered with emulsion layer.Base is partly selected the alloy material transition for use, and hollow structure is made in tooth body inside, built-in anticorrosion and nutrition supply medicine.Mould is suspended from the support in the isopressing device, stuffing pressure medium in airtight cavity volume, medium can be silicone oil, castor oil, atoleine, air or nitrogen, promote piston from the outside by the material universal testing machine and change pressure medium, regulate medium temperature by temperature control instrument and electric heater unit, signal feedback by the pressure and temperature sensor is controlled required temperature and pressure condition by computer program, with isostatic pressing method moulding tooth bud.Take off the latex jacket, take out tooth bud from mould, the plastic powders that successively applies Neutral colour on the surface is done transition, and applies life active material at outermost layer.Insert airtight cavity volume once more and be fixed on the support, secondary (three times) isostatic compaction solidifies one-step shaping then under the intensification condition.For cavity in the goods or pore structure, fill with high temperature resistant or low melting material, after moulding, utilize physical method or intensification fusion to remove, such as low melting point characteristic flush away after moulding of filling and utilizing wax with wax.
Can realize that with similar method isostatic pressing is equipped with joint prosthesis and artificial bone.Material can be selected high-strength resin for use, also can be titanium alloy material, and junction and interior bore are filled the good macromolecular material of pliability, surface-coated biocompatible substance.
Embodiment 2: plastic products and the components and parts of repairing fatigue damage.
Apparatus of the present invention are used to repair the multiple plastic products that are subjected to fatigue damage, comprise goods such as plastic bottle, bottle cap, plastic gear, plastic bearing, rotating shaft even artificial tooth.Reparing process is very simple, and the employing air is a pressure medium, and goods are hung on the support in the isopressing device, is warming up to about the vitrification point of product material, applies external pressure by press or Material Testing Machine then and protect to carry a certain hour and get final product.Regulate medium temperature by temperature control instrument and electric heater unit, control required temperature and pressure condition by computer program by the signal feedback of pressure and temperature sensor.
Claims (7)
1. simple isostatic pressing device, it is characterized in that comprising the airtight cavity volume that constitutes by housing (1) and piston (2), be provided with cantilever support (9) and electric heater unit (8) in the cavity volume, the heating cable of electric heater unit (8) is drawn housing and is linked to each other with temperature controller (7), on the contact-making surface of piston (2) and inner walls, be provided with seal (10), piston (2) is provided with air intake valve (11) and drain tap (14), be fixed with temperature sensor (13) and pressure sensor (4) on housing or the piston, the holding wire of temperature sensor and pressure sensor is drawn housing (1) and is linked to each other with computer.
2. simple isostatic pressing device according to claim 1 is characterized in that housing (1) is made up of base (5) and seamless steel pipe thread connection, and be provided with RUBBER O RunddichtringO (6) on contact-making surface.
3. simple isostatic pressing device according to claim 1 is characterized in that seal (10) is made up of the O RunddichtringO and the support ring that are embedded in piston (2) circumferential slot.
4. simple isostatic pressing device according to claim 1 is characterized in that being equipped with draw ring (12) on piston rod.
5. simple isostatic pressing device according to claim 1 is characterized in that being surrounded by collet (3) outside housing.
6. the described simple isostatic pressing device of claim 1 is characterized in that the application in preparation artificial tooth, joint prosthesis and the medical molded item of artificial bone.
7. the described simple isostatic pressing device of claim 1 is characterized in that being subjected to application in the plastic products of fatigue damage in reparation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510061498 CN1772467A (en) | 2005-11-09 | 2005-11-09 | Simple isostatic pressing device and its application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510061498 CN1772467A (en) | 2005-11-09 | 2005-11-09 | Simple isostatic pressing device and its application |
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| Publication Number | Publication Date |
|---|---|
| CN1772467A true CN1772467A (en) | 2006-05-17 |
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| CN 200510061498 Pending CN1772467A (en) | 2005-11-09 | 2005-11-09 | Simple isostatic pressing device and its application |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103228815A (en) * | 2010-11-30 | 2013-07-31 | 陶氏环球技术有限责任公司 | Refurbishing copper and indium containing alloy sputter targets |
| CN104343770A (en) * | 2014-10-16 | 2015-02-11 | 中国工程物理研究院化工材料研究所 | Heating device for medium oil in working cylinder of heating isostatic-pressing machine |
| CN105082606A (en) * | 2015-08-28 | 2015-11-25 | 陈烈 | Vertical cold isostatic press |
| CN105710130A (en) * | 2016-03-30 | 2016-06-29 | 宁波大学 | Floating pressing device for cross-wedge-rolled pieces |
| CN106216669A (en) * | 2016-08-25 | 2016-12-14 | 陕西师范大学 | A kind of dry type pseudo isostatic pressing method and device |
| CN107310187A (en) * | 2017-07-25 | 2017-11-03 | 中国科学院深海科学与工程研究所 | A kind of isostatic pressing machine working cylinder internal/external signal transferring structure |
| CN117067665A (en) * | 2023-09-18 | 2023-11-17 | 浙江德龙科技有限公司 | Temperature isostatic pressing machine |
-
2005
- 2005-11-09 CN CN 200510061498 patent/CN1772467A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103228815A (en) * | 2010-11-30 | 2013-07-31 | 陶氏环球技术有限责任公司 | Refurbishing copper and indium containing alloy sputter targets |
| US9399816B2 (en) | 2010-11-30 | 2016-07-26 | Dow Global Technologies Llc | Refurbishing copper and indium containing alloy sputter targets and use of such targets in making copper and indium-based films |
| CN103228815B (en) * | 2010-11-30 | 2016-08-17 | 陶氏环球技术有限责任公司 | Renovation is containing copper and the alloy sputtering targets of indium |
| CN104343770A (en) * | 2014-10-16 | 2015-02-11 | 中国工程物理研究院化工材料研究所 | Heating device for medium oil in working cylinder of heating isostatic-pressing machine |
| CN105082606A (en) * | 2015-08-28 | 2015-11-25 | 陈烈 | Vertical cold isostatic press |
| CN105710130A (en) * | 2016-03-30 | 2016-06-29 | 宁波大学 | Floating pressing device for cross-wedge-rolled pieces |
| CN106216669A (en) * | 2016-08-25 | 2016-12-14 | 陕西师范大学 | A kind of dry type pseudo isostatic pressing method and device |
| CN106216669B (en) * | 2016-08-25 | 2018-08-17 | 陕西师范大学 | A kind of dry type pseudo isostatic pressing method and device |
| CN107310187A (en) * | 2017-07-25 | 2017-11-03 | 中国科学院深海科学与工程研究所 | A kind of isostatic pressing machine working cylinder internal/external signal transferring structure |
| CN117067665A (en) * | 2023-09-18 | 2023-11-17 | 浙江德龙科技有限公司 | Temperature isostatic pressing machine |
| CN117067665B (en) * | 2023-09-18 | 2024-03-15 | 浙江德龙科技有限公司 | Temperature isostatic pressing machine |
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