SU1411156A1 - Method of thick large-sized producing articles from thermoplastic material at pressure on thermoplastic automatic moulding machine - Google Patents
Method of thick large-sized producing articles from thermoplastic material at pressure on thermoplastic automatic moulding machine Download PDFInfo
- Publication number
- SU1411156A1 SU1411156A1 SU864007024A SU4007024A SU1411156A1 SU 1411156 A1 SU1411156 A1 SU 1411156A1 SU 864007024 A SU864007024 A SU 864007024A SU 4007024 A SU4007024 A SU 4007024A SU 1411156 A1 SU1411156 A1 SU 1411156A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- thermoplastic
- injection
- mold
- pressure
- moulding machine
- Prior art date
Links
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 6
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 6
- 239000012815 thermoplastic material Substances 0.000 title claims description 3
- 238000000465 moulding Methods 0.000 title claims 2
- 238000000034 method Methods 0.000 title abstract description 6
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 238000001746 injection moulding Methods 0.000 claims abstract 2
- 239000000155 melt Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/34—Moulds having venting means
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Изобретение относитс к способам изготовлени из термопласта на термопласте- автомате литьем под давлением. Цель - улучшение качества изделий. Дл этого производ т вакуумирование полости формы по кольцевому зазору с момента закрыти отверсти литьевой втулкой до начала охлаждени отливки в пределах от до 10 мм рт. ст. I ил.The invention relates to methods for the production of thermoplastic on a thermoplastic machine by injection molding. The goal is to improve the quality of products. To do this, the mold cavity is evacuated by an annular gap from the moment the hole is closed with the injection sleeve until the casting starts to cool down to between 10 mm Hg. Art. I il.
Description
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Изобретение относитс к способам изго- |овлени изделий на термопласте-автомате 4итьем под давлением. : Цель изобретени - устранение газо- 4ых пустот в издели х, изготовленных спо- (io6oM лить на tepмoплacтe-aвтoмaтe.The invention relates to methods for the manufacture of articles on an automatic thermoplastic by injection under pressure. : The purpose of the invention is the elimination of gas voids in products manufactured by the method (io6oM cast on a thermoplate-automaton.
На чертеже показано устройство дл «Осуществлени предлагаемого способа. : Устройство содержит подвижную 1 и неподвижную 2 части формы, формующую по- дость 3 формы, образуемую част ми 1 и 2 формы, сопло 4, литьевую втулку 5, материальный цилиндр 6, черв к 7, гермети- 4ированную прокладку 8, уложенную в плоскости разъема формы в кольцевом канале. И плоскости разъема формы выполнена непрерывна кольцева выточка 9, ширина ко- торой определ етс текучестью расплава. Лл материала, в зкость которого ПТР Юг/10 мин, ширина кольцевой выточки (1,1 мм, при ПТР 3 г/10 мин-0,15 мм. В не- г одвижной полуформе 2 выполнено выходное отверстие 10, предназначенное дл сооб- цени кольцевой выточки со штуцером 11 с|истемы вакуумной откачки, в которой имеет- с| вакуумный насос 12. I Способ осуществл ют следующим обра3:ОМ .The drawing shows a device for the implementation of the proposed method. : The device contains movable 1 and fixed 2 parts of the form, forming a form 3 forms formed by parts 1 and 2 of the form, nozzle 4, injection sleeve 5, material cylinder 6, worm to 7, sealed gasket 8, laid in the plane connector form in the annular channel. And the plane of the connector of the mold is made of a continuous annular undercut 9, the width of which is determined by the fluidity of the melt. Ll of the material, the viscosity of which is MTR South / 10 min, the width of the annular undercut (1.1 mm, with MFR 3 g / 10 min-0.15 mm. In the non-moving half-mold 2 there is an outlet 10 designed to communicate Values of an annular undercut with a fitting 11 with a vacuum pumping system, in which there is a vacuum pump with a vacuum pump 12. I The method is carried out as follows: OM.
I Гранулированный термопластичный мате- пластифицируют под действием темпе- р(атуры в материальном цилиндре 6 литье- фй машины и вращающимс черв ком 7 глодают к соплу 4. Затем подвижную часть 1 л|итьевой формы подают к неподвижной час- т 2. В момент смыкани полуформ вклю- Ч|аетс вакуумный насос 12, который после закрыти отверсти литьевой втулки 5 соплом 4 узла впрыска обеспечивает откачку газообразных веществ из герметизированного объема формующей полости 3 формы. Герметизаци объема полости обеспечиваетс с одной стороны герметизирующей прокладкой 8, уложенной в плоскости разъема полуформ в кольцевой канал на неподвижной части формы, с другой стороны - соплом 4 узла впрыска, заполненным материалом .I The granulated thermoplastic material is plasticized under the action of temperatures (the atura in the material cylinder 6 of the casting machine and the rotating worm 7 are passed to the nozzle 4. Then the movable part 1 l | of the mold is fed to the fixed part 2. At the moment of closing the half-molds include a vacuum pump 12 which, after the opening of the injection sleeve 5 is closed by the nozzle 4 of the injection unit, allows the gaseous substances to be pumped out of the sealed volume of the mold cavity 3. Sealing the cavity volume is provided on one side by sealing th gasket 8, laid in the plane of the connector half-form in the annular channel on the fixed part of the form, on the other hand - nozzle 4 injection unit filled with material.
Вакуумирование формы производ т до начала охлаждени через кольцевую выточку 9 и выходное отверстие 10 до разрежени -10 мм рт.ст.The evacuation of the mold is carried out before cooling through the annular recess 9 and the outlet 10 to a vacuum of -10 mm Hg.
Этим исключаетс возможность захвата расплавом воздуха, а также уменьшаетс образование пустот, содержащих газы, в отливках крупногабаритных изделий, что повышает качество отливок.This eliminates the possibility of air being captured by the melt and also reduces the formation of gas-containing voids in the castings of large-sized products, which improves the quality of the castings.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU864007024A SU1411156A1 (en) | 1986-01-14 | 1986-01-14 | Method of thick large-sized producing articles from thermoplastic material at pressure on thermoplastic automatic moulding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU864007024A SU1411156A1 (en) | 1986-01-14 | 1986-01-14 | Method of thick large-sized producing articles from thermoplastic material at pressure on thermoplastic automatic moulding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1411156A1 true SU1411156A1 (en) | 1988-07-23 |
Family
ID=21216178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU864007024A SU1411156A1 (en) | 1986-01-14 | 1986-01-14 | Method of thick large-sized producing articles from thermoplastic material at pressure on thermoplastic automatic moulding machine |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1411156A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2283763C2 (en) * | 2000-05-01 | 2006-09-20 | Девананд ВАРМА | Mold and process for dynamic molding |
-
1986
- 1986-01-14 SU SU864007024A patent/SU1411156A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2283763C2 (en) * | 2000-05-01 | 2006-09-20 | Девананд ВАРМА | Mold and process for dynamic molding |
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