DE1529766A1 - Nozzle of an injection molding machine with mold for sprueless pre-chamber gate - Google Patents
Nozzle of an injection molding machine with mold for sprueless pre-chamber gateInfo
- Publication number
- DE1529766A1 DE1529766A1 DE19641529766 DE1529766A DE1529766A1 DE 1529766 A1 DE1529766 A1 DE 1529766A1 DE 19641529766 DE19641529766 DE 19641529766 DE 1529766 A DE1529766 A DE 1529766A DE 1529766 A1 DE1529766 A1 DE 1529766A1
- Authority
- DE
- Germany
- Prior art keywords
- nozzle
- piston
- cylinder
- antechamber
- mold
- 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
- 238000001746 injection moulding Methods 0.000 title claims description 4
- 238000005266 casting Methods 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000007654 immersion Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000003716 rejuvenation Effects 0.000 description 1
- 239000007921 spray 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
- B29C45/20—Injection nozzles
-
- 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
- B29C45/20—Injection nozzles
- B29C45/23—Feed stopping equipment
-
- 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
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
Patent- und Gebrzuchsmusterhilfsanmeldung Bezeichnung: Düse einer Spritsgießmaschine mit Gleßform für g oB uß * ----------------------------------------------------------------Die @rfindung besieht sich auf eine Düse einer Spritsgießmaschine lt it Gießform für angußlosen Vorkammeranguß.Patent and utility model auxiliary application Designation: Nozzle of a Injection molding machine with mold for g oB uss * ------------------------------------------ ----------------------The @rfindung refers to a nozzle of an injection molding machine lt it mold for sprueless antechamber gate.
Die an sich bekannten Gießf@rmen vergleichbarer Art weisen @or@ammern mit durchgehend konischer Gestalt auf. Der beim @ins@ritzvorgang in der Vorkammer komprimierte Kunststoff dehnt eieh lE Absetzen der Düse infolge Wegfallene des berdruckes aus und tritt teilweise rückseitig aus der Vorkamer. Das ausgetretene @lastische Material verschmutzt vial-ach @ach Düse und Heizbänier. Die Erfindung zeigt, daß letztere durch die Einwirkung dom ausgetretenen plastischen @aterials in lhrer Lebensdeuer beeinträchtigt sind. die aufgezeigten Nachteile werden erfindungsgemäß dadurch behohen, daß das freie mit wentralem Düsenkanal verschene . @nde der Düse als Kolben und die Vorkammer der Gießform als zum Rolben passender Zylinder ausgebildet ist, wobei der kolben beim Einspritzvorgang in den Zylinder eingetaucht ist.The casting molds of a comparable type known per se show @ or @ ammern with a conical shape throughout. The one during the @ ins @ scoring process in the antechamber Compressed plastic stretches eieh lE deposition of the nozzle as a result of the absence of the overpressure and partially emerges from the rear of the antechamber. The trodden @lastische Material is dirty vial-ach @ach nozzle and heating tape. The invention shows that the latter due to the influence of the leaked plastic @materials in your life are impaired. the disadvantages shown are corrected according to the invention by that the free with a ventral nozzle channel give away. @end the nozzle as a piston and the antechamber of the casting mold is designed as a cylinder that matches the roller, wherein the piston is immersed in the cylinder during the injection process.
3aoteinemweiterenMorktaalderErfindungweiataertolban einun Eiinteraehnltt auf. 3aotanother Morktaal of the invention also includes atertolban on.
In Weiterbildung des @rfindungsgedankene ist vorgesehen, daß die Vorkammer der Gießform auf der ihrer Hohlform zugewandten Seite in einen glockenartig gestalteten Vorkammerabschnitt ausläuft, der unmittelbar vor der Hohlform endigt. In a further development of the @rfindungsgedankene it is provided that the Antechamber of the casting mold on the side facing its hollow shape into a bell-shaped designed prechamber section expires, which ends immediately in front of the hollow shape.
; eckmäßigerweise ist die Düse als @chiebed@se ausgebildet und rückzeitig gegenüber dem Düsenkopf abgefedert. ; The nozzle is rectangularly designed as a @chiebed @ se and backwards cushioned against the nozzle head.
Nachstehend wird die Erfindung an Hand der Zeichnung an einem Ausführungsbeispiel erläutert: Es zeigen: Yi iiwvonderGießformabgewetzte,leeecmitten Düse oowio don der Dutte benachbarten Tell Gießform und Fig.2 die a@f die Gießform aufgezetzte Düse gemäß Fig.1. The invention is illustrated below with reference to the drawing using an exemplary embodiment explained: It shows: Yi iiw worn by the casting mold, leeec in the middle of the nozzle oowio don the Dutte neighboring Tell casting mold and Fig. 2 the a @ f attached to the casting mold Nozzle according to Fig. 1.
Der Düsenkopf 1 ist über ein Außengewinde mit dem Spritzsylinder (nicht gezeichnet) verb@nden. Im Düsenkopf ist eine mit zentralen Düsenkenal 11 und radial verlaufenden Querkanälen 12 versehene Schiebedüse 2, 2', 2' derart begrenzt längsverschiebbar gela@ert, daß die Querkanäle 12 bei abgesetztem Spritz@ylinder vom Gleitlager der Schiebedüse abgedeckt un@ bei Vrschiebung derselben infolge Auftreffen auf der Gießform 5 bis 11 mit dom Innern des Spritzzylinders in Verbindung gebracht sind. tin eolehea Vereohlußeyetem tat jedoch nicht Voraussetzung fur @@e Verwirklichung des Erfindungsgeda@@@ens. D@e Sc@iebedüse 2, 2', 2" weist einen zylindrischen, im Gleitlager des D@senkopfes 1 @eführten Abschnitt 2 auf, mit de@ : rückseitig ein Schraubenbolzen 3 lösber verbunden ist. Vvrdors*1tig geht der im Gleitlager geführte Abachnitt 2 der Schiebedüse in sinen zylindrischen Teil 2' größeren Durchmessere über, der sich kenisch verjüegt hl sehließlich in einen Vorkammerkolben 2@ ausläuft. Im Bereich dieses Vorkammerkolbens weist der zentrale Düsenkanal 11, 11' e Abwehaittgwriawrrliehtwr<it<tut,wodurchdiw Austrittsgeschwindigkeit des plastischen Materiales aus der Düse und damit die Fühigkeit desselben, @iderstände in der Vorkammer der Gi@@form zu überwinden, er@öht ist. The nozzle head 1 is connected to the injection cylinder via an external thread (not shown) connect. In the nozzle head is a central nozzle valley 11 and sliding nozzles 2, 2 ', 2' provided with radially extending transverse channels 12 are limited in this way It is possible to move longitudinally so that the transverse channels 12 when the spray cylinder is detached covered by the slide bearing of the sliding nozzle and when it is shifted as a result of impact on the mold 5 to 11 with the interior of the injection cylinder in connection are. tin eolehea Vereohlußeyetem, however, was not a prerequisite for @@ e realization of the invention. The Sc @ iebedüse 2, 2 ', 2 "has a cylindrical, im Slide bearing of die head 1 @ listed section 2, with de @: on the back Screw bolt 3 is connected loosely. Vvrdors * 1tig goes the one guided in the plain bearing Section 2 of the sliding nozzle in its cylindrical part 2 'of larger diameters about who is rejuvenated in Kenyan hl finally in an antechamber flask 2 @ expires. In the area of this prechamber piston, the central nozzle channel 11, 11 'e Abwehaittgwriawrrliehtwr <it <does, whereby the exit velocity of the plastic material from the nozzle and thus its ability to resist to overcome in the antechamber of the Gi @@ form, he @ öht is.
ßl Vor@ammer 4, 4', 4" der G@@@@orm 5-10 ist als zum @olben 2" der Schiebedüse passender Zylinder ausgebildet.ßl Before @ ammer 4, 4 ', 4 "the G @@@@ orm 5-10 is as to @olben 2" the Sliding nozzle designed to match the cylinder.
@ie aus Fig.2 er@ichtlich, ist der @it einem @interschnitt 2"' versehene @olben bei@ Einspritzvorgang vollständig in den Zyli@der 4 der Gießform eingstauc@t. i<VwitMr4,4',4'dwr(MftformKurtfdtrihrHohl-(J form 11 zu@e@andten Seite in einem glockenartig gestellteten Vorkammer-Ab@@nitt 4" a@s, der unnittelbar vor der Hohlform eniXt.As can be seen from Fig. 2, the @it is provided with an @intcut 2 "' The piston is completely jammed in the cylinder 4 of the mold during the injection process. i <VwitMr4,4 ', 4'dwr (MftformKurtfdtrihrHohl- (J form 11 to @ e @ other side in one bell-shaped antechamber Ab @@ nitt 4 "a @ s, the one in front of the hollow form eniXt.
D lEuft d Vorks mer in einen konischen Absc@nitt 4' a dessen beigusgewin@el des Neigungswinke@ d@s Teiles 2' der Schiebedüse im koni@ch auslaufenden Bereich entspricht.The precsmer runs into a conical section 4'a of which the thread is attached of the angle of inclination @ d @ s part 2 'of the sliding nozzle in the conical area is equivalent to.
Luf diese Weise vermag die wandung der Vor@@@mer in konischen Abschnitt 4' @ewissermaßen als Vestileite zu wirken, auf dem der Teil 2' dre Schiebed@se in konizeh verjün@ten Bereich als Ventilkörper aufliegt.In this way it is possible to turn the front into a conical section 4 '@ to act as a vestibule on which the part 2' dre slide @ se in Konizeh tapered area rests as a valve body.
In übrigen ist aber bereite durch genaus @assung des Vork@@@erkolbens 2' der Schiebedüse im Zylinder 4 der Gießf@rm eine @ ausreiehende AMithtumg errsicht, so daß ein Austreten des beim Elneprltzvorgong in der Vorker@@r komprinierten plastischen Ut riait nicht ; ehr möglic@ ist. D*r Minteraohnitt 2"' in kolbec 2' stellt sicher, daß der durch die V@rkammer gebildete @usststoff-Formling nach @rst@@ren aus dieser beim Absetzen des Spritzzylindere berausgenommen wird. Die @@@iebedüse ist r@ekseitig durch s@ischen Düsenkopf und Vorderteil der Schiebedüse angeordnete Tellerfedern 7 abgefe@ert. An der Grease zwischen demZentrierbund5 und der Fassenplatte 13 verlaufen Kühlkenäle 9, die durch Dichtungen 10 abgesichert sind. io Vorkamnerplatte 1T nimmt tell an der Bildung der Hchlform 11, die innenseitig durch einen Kern 8 begrenzt ist.In other respects, however, it is prepared by exact @@@ Erkolbens 2 'of the sliding nozzle in cylinder 4 of the casting mold a sufficient amount of material is obtained, so that an escape of the plastic which was compressed in the front row at the Elneprltzvorgong Ut riait not; or more possible @ is. The Minteraohnitt 2 "'in kolbec 2' ensures that the plastic molded article formed by the vial chamber after @ rst @@ ren from this is excluded when the injection cylinder is set down. The @@@ iebedüse is on the right Disc springs arranged by the s @ sic nozzle head and the front part of the sliding nozzle 7 fired. On the grease between the centering collar 5 and the grip plate 13 run cooling channels 9, which are secured by seals 10. io prechamber plate 1T takes part in the formation of the hollow shape 11, which is formed on the inside by a core 8 is limited.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA0045306 | 1964-02-22 | ||
DEA0045306 | 1964-02-22 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE1529766A1 true DE1529766A1 (en) | 1970-02-12 |
DE1529766B2 DE1529766B2 (en) | 1972-07-06 |
DE1529766C DE1529766C (en) | 1973-02-15 |
Family
ID=
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2550989A1 (en) * | 1983-08-30 | 1985-03-01 | Allibert Sa | Process and device for moulding large-sized plastic articles. |
EP0186633A2 (en) * | 1984-12-24 | 1986-07-02 | RUTIL S.r.l. | Improved mould and nozzle in an injection molding machine |
EP0700765A1 (en) * | 1994-09-01 | 1996-03-13 | Gencorp Inc. | Molding apparatus |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2550989A1 (en) * | 1983-08-30 | 1985-03-01 | Allibert Sa | Process and device for moulding large-sized plastic articles. |
EP0186633A2 (en) * | 1984-12-24 | 1986-07-02 | RUTIL S.r.l. | Improved mould and nozzle in an injection molding machine |
EP0186633A3 (en) * | 1984-12-24 | 1988-01-20 | RUTIL S.r.l. | Improved mould and nozzle in an injection molding machine |
EP0700765A1 (en) * | 1994-09-01 | 1996-03-13 | Gencorp Inc. | Molding apparatus |
US6106275A (en) * | 1994-09-01 | 2000-08-22 | Gencorp Inc. | Molding press apparatus |
Also Published As
Publication number | Publication date |
---|---|
DE1529766B2 (en) | 1972-07-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
SH | Request for examination between 03.10.1968 and 22.04.1971 | ||
C3 | Grant after two publication steps (3rd publication) | ||
E77 | Valid patent as to the heymanns-index 1977 | ||
EHJ | Ceased/non-payment of the annual fee |