PL127503B2 - Mould filling system for plastic injection moulding processes - Google Patents

Mould filling system for plastic injection moulding processes Download PDF

Info

Publication number
PL127503B2
PL127503B2 PL22963981A PL22963981A PL127503B2 PL 127503 B2 PL127503 B2 PL 127503B2 PL 22963981 A PL22963981 A PL 22963981A PL 22963981 A PL22963981 A PL 22963981A PL 127503 B2 PL127503 B2 PL 127503B2
Authority
PL
Poland
Prior art keywords
channels
heaters
distribution channels
plastic injection
injection
Prior art date
Application number
PL22963981A
Other languages
Polish (pl)
Other versions
PL229639A2 (en
Inventor
Jozef Czerniak
Kazimierz Gano
Andrzej Kalinowski
Original Assignee
Form Metalowych Ponar Formet F
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Form Metalowych Ponar Formet F filed Critical Form Metalowych Ponar Formet F
Priority to PL22963981A priority Critical patent/PL127503B2/en
Publication of PL229639A2 publication Critical patent/PL229639A2/xx
Publication of PL127503B2 publication Critical patent/PL127503B2/en

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)

Description

Przedmiotem wynalazku jest uklad wtryskowy formy do przetwórstwa tworzyw sztucznych.Znane rozwiazania ukladów wtryskowych z tak zwanymi goracymi kanalami zlozone z kanalów rozprowadzajacych tworzywo oraz kanalów doprowadzajacych, laczacych kanaly roz¬ prowadzajace z gniazdem formujacym. W rozwiazaniach tych tworzywo ogrzewane jest na calej drodze przeplywu grzalkami umieszczonymi wewnatrz kanalów rozprowadzajacych, przy czym kanaly doprowadzajace stanowia w tych rozwiazaniach specjalne dysze z grzalka wewnetrzna.Rozwiazania te wymagaja, ze wzgledu na duza wrazliwosc na przegrzanie grzalek w kanalach doprowadzajacych, stosowanie precyzyjnej aparatury kontrolno-pomiarowej do sterowania i regulacji pracy szczególnie grzalek kanalów doprowadzajacych.Znane sa równiez rozwiazania ukladów wtryskowych goraco kanalowych z tak zwanym rozdzielaczem, gdzie tworzywo w kanalach rozprowadzajacych ogrzewane jest grzalkami umie¬ szczonymi obok kanalów, a kanaly doprowadzajace tworzywo do gniazda formy stanowia dysze ogrzewane posrednio od rozdzielacza lub umieszczonymi w kanalach grzalkami patronowymi.Wada tych ukladów sa przede wszystkim duze straty energetyczne oraz niedogodnosci ich stosowania wynikajace z rozszerzalnosci cieplnej stosowanych rozdzielaczy.Celem wynalazku jest opracowanie ukladu wtryskowego zgrzanymi kanalami, mozliwego do wykonania i obslugi w przecietnych warunkach przemyslowych.Uklad wtryskowy formy do przetwórstwa tworzyw sztucznych z goracymi kanalami wedlug wynalazku charakteryzuje sie tym, ze ma grzalki umieszczone w kanalach rozprowadzajacych oraz grzalki opaskowe ogrzewajace kanaly doprowadzajace.Cecha charakterystyczna rozwiazania jest równiez to, ze kanaly doprowadzajace stanowia tuleje wtryskowe ogrzewane tylko w strefie srodkowej. Korzystne jest gdy tuleje te sa izolowane od plyty zawierajacej kanaly rozprowadzajace.Glówna zaleta rozwiazania wedlug wynalazku jest proste wykonanie calego ukladu, mozliwe do wykonania w kazdej narzedziowni.Rozwiazanie wedlug wynalazku pokazano na przykladzie wykonania na rysunku, który przedstawia fragment formy w przekroju osiowym przez uklad wtryskowy.2 127503 Jak pokazano na rysunku, uklad wtryskowy formy tworza: dysza glówna 1, ogrzewane wewnetrznie kanaly rozprowadzajace 2 oraz ogrzewane zewnetrznie kanaly doprowadzajace 6.Kanaly 2 wykonane w plytach 3 sa ogrzewane wewnetrznie grzalka 4 umieszczona w rurze 5, a kanaly doprowadzajace 6 stanowi tuleja wtryskowa 7 ogrzewana w srodkowej czesci grzalka opaskowa 8.Tuleja 7 osadzona jest ciasno od strony gniazda formujacego 9 w plycie 10 oraz luzno w otworze plyty 3, od strony kanalu 2, przy czym bezposrednio styka sie z nia na stozkowej, centralnej i zamykajacej powierzchni 11. Szczelina miedzy tuleja 7, a plyta 3 wypelniona jest tworzywem tworzac izolacje termiczna 12. Moc grzalki 8 i dlugosc osadzenia tulei 7 w plycie 10 sa dobrane tak, ze po wypelnieniu gniazda 9 tworzywo zastyga we wlewie 13. Izolacje termiczna 12 moze równiez stanowic tuleja wykonana z innego materialu izolacyjnego.Zastrzezenia patentowe 1. Uklad wtryskowy formy do przetwórstwa tworzyw sztucznych z goracymi kanalami zlo¬ zony z kanalów rozprowadzajacych tworzywo i kanalów doprowadzajacych, laczacych kanaly rozprowadzajace z gniazdem formujacym, znamienny tym, ze ma grzalki (4) umieszczone w kana¬ lach rozprowadzajacych (2) oraz grzalki opaskowe (8) do ogrzewania kanalów doprowadzajacych (5). 2. Uklad wedlug zastrz. 1, znamienny tym, ze kanaly doprowadzajace (6) stanowia tuleje wtryskowe(7) ogrzewane grzalkami(8) w strefie srodkowej. 3. Uklad wedlug zastrz. 2, znamienny tym, ze od strony kanalów rozprowadzajacych (2), tuleje (7) sa izolowane termicznie warstwa (12) od plyty zawierajacej kanaly (2). 4. Uklad wedlug zastrz. 3, znamienny tym, ze warstwe izolacyjne (12) stanowi przetworzone tworzywo wypelniajace szczeline miedzy tuleja (7) a plyta (3). 11 06 08 10 f3 09 Pracownia Poligraficzna UP PRL. Naklad 100 egz.Cena 100 zl PLThe subject of the invention is an injection molding system for plastics processing. Known solutions of injection systems with so-called hot runners consisting of plastic distribution channels and feed channels connecting the distribution channels with the forming cavity. In these solutions, the material is heated along the entire flow path by heaters placed inside the distribution channels, while the supply channels in these solutions are special nozzles with an internal heater. These solutions require, due to the high sensitivity to overheating of the heaters in the supply channels, the use of There are also known solutions of hot runner injection systems with a so-called distributor, where the material in the distribution channels is heated with heaters located next to the channels, and the channels supplying the material to the mold cavity are indirectly heated nozzles The main disadvantages of these systems are high energy losses and the inconvenience of their use resulting from thermal expansion of the manifolds used. The injection system of the injection system with welded channels, possible to manufacture and service in average industrial conditions. The hot runner injection molding system for plastics processing, according to the invention, is characterized by the fact that it has heaters placed in the distribution channels and band heaters to heat the feed channels. The characteristic feature of the solution is also that the supply channels are injection sleeves heated only in the middle zone. It is advantageous if these sleeves are insulated from the plate containing the distribution channels. The main advantage of the solution according to the invention is the simple implementation of the entire system, possible to be made in any tool shop. The solution according to the invention is shown in the example of the embodiment in the drawing, which shows a part of the mold in an axial section through the system. injection.2 127503 As shown in the figure, the mold injection system consists of: main nozzle 1, internally heated distribution channels 2 and externally heated supply channels 6. Channels 2 made in plates 3 are internally heated by a heater 4 located in pipe 5, and supply channels 6 it is an injection sleeve 7 heated in the central part by a band heater 8. The sleeve 7 is tightly seated from the side of the molding seat 9 in the plate 10 and loosely in the plate opening 3, from the side of the channel 2, while directly in contact with it on the conical, central and closing plate surface 11. The gap between sleeve 7 and plate 3 is filled with creating thermal insulation 12. The power of the heater 8 and the length of the sleeve 7 in the plate 10 are selected in such a way that after filling the socket 9, the material solidifies in the infusion 13. Thermal insulation 12 can also be a sleeve made of other insulating material. Patent claims 1. System Injection molds for plastics processing with hot runners, consisting of plastic distribution channels and feed channels connecting the distribution channels to the forming cavity, characterized in that it has heaters (4) located in the distribution channels (2) and band heaters (8 ) for heating the supply ducts (5). 2. System according to claim A method according to claim 1, characterized in that the supply channels (6) are injection sleeves (7) heated by heaters (8) in the central zone. 3. System according to claim The method of claim 2, characterized in that on the side of the distribution channels (2), the sleeves (7) are thermally insulated with a layer (12) from the plate containing the channels (2). 4. System according to claim The method of claim 3, characterized in that the insulating layer (12) is a processed material filling the gap between the sleeve (7) and the plate (3). 11 06 08 10 f3 09 Printing studio of the Polish People's Republic. Mintage 100 copies Price PLN 100 PL

Claims (4)

Zastrzezenia patentowe 1. Uklad wtryskowy formy do przetwórstwa tworzyw sztucznych z goracymi kanalami zlo¬ zony z kanalów rozprowadzajacych tworzywo i kanalów doprowadzajacych, laczacych kanaly rozprowadzajace z gniazdem formujacym, znamienny tym, ze ma grzalki (4) umieszczone w kana¬ lach rozprowadzajacych (2) oraz grzalki opaskowe (8) do ogrzewania kanalów doprowadzajacych (5).Claims 1. A hot runner plastic injection mold system consisting of plastic distribution channels and feed channels connecting the distribution channels to the forming cavity, characterized in that there are heaters (4) placed in the distribution channels (2) and band heaters (8) for heating the feed channels (5). 2. Uklad wedlug zastrz. 1, znamienny tym, ze kanaly doprowadzajace (6) stanowia tuleje wtryskowe(7) ogrzewane grzalkami(8) w strefie srodkowej.2. System according to claim A method according to claim 1, characterized in that the supply channels (6) are injection sleeves (7) heated by heaters (8) in the central zone. 3. Uklad wedlug zastrz. 2, znamienny tym, ze od strony kanalów rozprowadzajacych (2), tuleje (7) sa izolowane termicznie warstwa (12) od plyty zawierajacej kanaly (2).3. System according to claim A method as claimed in claim 2, characterized in that on the side of the distribution channels (2), the sleeves (7) are thermally insulated with a layer (12) from the plate containing the channels (2). 4. Uklad wedlug zastrz. 3, znamienny tym, ze warstwe izolacyjne (12) stanowi przetworzone tworzywo wypelniajace szczeline miedzy tuleja (7) a plyta (3). 11 06 08 10 f3 09 Pracownia Poligraficzna UP PRL. Naklad 100 egz. Cena 100 zl PL4. System according to claim The method of claim 3, characterized in that the insulating layer (12) is a processed material filling the gap between the sleeve (7) and the plate (3). 11 06 08 10 f3 09 Printing studio of the Polish People's Republic. Mintage 100 copies. Price PLN 100 PL
PL22963981A 1981-02-10 1981-02-10 Mould filling system for plastic injection moulding processes PL127503B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL22963981A PL127503B2 (en) 1981-02-10 1981-02-10 Mould filling system for plastic injection moulding processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL22963981A PL127503B2 (en) 1981-02-10 1981-02-10 Mould filling system for plastic injection moulding processes

Publications (2)

Publication Number Publication Date
PL229639A2 PL229639A2 (en) 1981-12-11
PL127503B2 true PL127503B2 (en) 1983-10-31

Family

ID=20007306

Family Applications (1)

Application Number Title Priority Date Filing Date
PL22963981A PL127503B2 (en) 1981-02-10 1981-02-10 Mould filling system for plastic injection moulding processes

Country Status (1)

Country Link
PL (1) PL127503B2 (en)

Also Published As

Publication number Publication date
PL229639A2 (en) 1981-12-11

Similar Documents

Publication Publication Date Title
EP0144532B1 (en) Injection molding system having an insulation sleeve
US4500279A (en) Heat pipe manifold system
US5051086A (en) Insulated injection molding nozzle
AU727837B2 (en) On-demand fast cycle mold
US5147663A (en) Modular manifold assembly
CN1059859C (en) Mould injection nozzle with radial wings
CA1141119A (en) Injection moulding die with heavy-duty sprue bush
US7137806B2 (en) Thermally balanced hot runner nozzle
AU2001229918A1 (en) Mould having embedded heating element and improved thermal conductivity
GB1509159A (en) Hot plastic injection bushing
EP0920969A1 (en) Injection molding means
PL181842B1 (en) Injection assembly with heated passages
EP0229689B1 (en) Plastic injection moulding system with multiple tip torpedo heater
WO1999020451A1 (en) Heater block with unitized removable heat conductive member
WO2005105408A1 (en) Small pitch molding manifold
US4492555A (en) Multiple hot runner injection bush
JPH04308718A (en) Injection molding device
PL127503B2 (en) Mould filling system for plastic injection moulding processes
EP0336748A3 (en) Plastic injection mold apparatus with multiple tip torpedo heater
CA1153523A (en) Injection molding fixed pin gate
EP1428646B1 (en) Nozzle with a removable and replaceable heating device
EP1584442B1 (en) Nozzle having a nozzle body with heated and unheated nozzle body segments
JPS6315892B2 (en)
EP0309585A1 (en) Hot runner system
JPS63256415A (en) Heating path device for plastic injection molding machine