DE1877220U - DEVICE FOR VENTILATING INJECTION MOLDING. - Google Patents
DEVICE FOR VENTILATING INJECTION MOLDING.Info
- Publication number
- DE1877220U DE1877220U DEST13372U DEST013372U DE1877220U DE 1877220 U DE1877220 U DE 1877220U DE ST13372 U DEST13372 U DE ST13372U DE ST013372 U DEST013372 U DE ST013372U DE 1877220 U DE1877220 U DE 1877220U
- Authority
- DE
- Germany
- Prior art keywords
- injection
- grooves
- mold
- injection molding
- ventilating
- 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.)
- Expired
Links
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
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
Description
Einrichtung zum Entlüften von SpritzgußformenDevice for venting injection molds
Bei der Herstellung von Spritzgußformen spielt es eine Rolle, für die Entlüftung während des Spritzgießvorganges "besondere Vorrichtungen vorzusehen. Es war bisher üblich, an den Stirnseiten der Formen Entlüftungskanäle vorzusehen, um Lunker oder ähnliche durch Lufteinschlüsse verursachte Fehler an den herzustellenden Teilen zu vermeiden« In besonderen Fällen ist es jedoch nicht möglich, die Stirnseite hierzu zu benutzen, vor allem wenn die Stirnfläche des Erzeugnisses eine glatte Oberfläche besitzen soll· Das Verlegen der Entlüftungskanäle an die Seitenwände der Formen verhindert in vielen Fallen ein leichtes Herausnehmen des Erzeugnisses aus der Form,In the manufacture of injection molds it plays a role for the ventilation during the injection molding process "special devices to be provided. It has hitherto been customary to provide ventilation channels on the end faces of the molds in order to pass cavities or the like through air inclusions to avoid errors caused on the parts to be manufactured «In special cases, however, it is not possible to use the To use the front side for this purpose, especially if the front surface of the product should have a smooth surface Ventilation channels on the side walls of the molds prevent the product from being easily removed from the mold in many cases,
Gemäß der Erfindung wird deshalb zum Entlüften der Spritzgußformen für die Herstellung von insbesondere länglichen Spritzgußteilen aus thermoplastischem Werkstoff die Spritzgußform aus koaxial übereinanderlelegten Blechen oder Scheiben hergestellt, auf denen Nuten oder Rinnen angebracht sind, die von der Forminnenwand zur Außenwand führen. In den meisten Fällen ist es völlig ausreichend, in jedem Blech oder jeder Scheibe eine einzige Rinne oder Nut vorzusehen, die diametral über deren größere Fläche verläuft. Sie wird zweckmäßig eingeschliffen oder eingefräst und besitzt eine TiefeAccording to the invention is therefore used to vent the injection molds For the production of, in particular, elongated injection molded parts made of thermoplastic material, the injection mold made of coaxial superimposed sheets or disks made on which Grooves or channels are attached, which lead from the inner wall of the mold to the outer wall. In most cases it is sufficient to to provide a single groove or groove in each sheet or disk, which runs diametrically over its larger surface. she will suitably ground or milled and has a depth
20 von 0,01 bis 0,03 mm.20 from 0.01 to 0.03 mm.
Mit einer bpritzgußform, die eine Entlüftungseinrichtung gsmäß der Erfindung besitzt, können Federpimpel, Knöpfe und alle Teile, beiWith an injection mold that has a ventilation device Invention owns can feather pimples, buttons and all parts, at
Sdt/ilu - 2 -Sdt / ilu - 2 -
denen zur !Fertigung eine Form mit längerem Sackloch erforderlich ist, hergestellt werden. Neben den herstellungstechnischen Vorteilen für das Erzeugnis bestehen auch Vorteile bei dsr Herstellung der Form selbst, da diese durch Änderung der Zahl und der Art der zur Form dienenden Scheiben leicht angeändert werden kann.which require a mold with a longer blind hole for production is to be produced. In addition to the manufacturing advantages for the product, there are also advantages in manufacturing the shape itself, as these are easily altered by changing the number and type of disks used for the shape can.
Ein Ausführungsbeispiel wird in der Zeichnung dargestellt, in derAn embodiment is shown in the drawing, in which
Figur 1 die Seitenansicht einer Spritzgußform mit den Merkmalen der Erfindung für einen zylindrischen Formling zeigt,Figure 1 is a side view of an injection mold with the features shows the invention for a cylindrical molding,
Figur 2 ist der Horizontalschnitt der Form nach Figur 1 in der Ebene A-B undFigure 2 is the horizontal section of the form of Figure 1 in FIG Level A-B and
Figur 3 eine etwa fünffache Vergrößerung des unteren Teils dieser Form im Schnitt der Ebene C-D von Figur 2.FIG. 3 shows an approximately five-fold enlargement of the lower part of this form in the section of the plane C-D of FIG.
Der Innenraum 5 der Form nach Figur 1 ist zylindrisch, wie durch die gestrichelte Linie angedeutet ist, Die Einführung der Spritzmasse erfolgt von unten, während der Hohlraum oben bei β verschlossen ist« Die Form selbst besteht aus einer starken oberen Platte 1 , aus sechs dünnen Platten 2 und schließlich aus einer wieder etwas stärkeren Platte 3, die die Fora nach unten hin abschließt. Die Scheiben 2 besitzen eingeschliffene Kanäle, die zwei gegenüberliegende Seiten der Form durch die in der Kitte liegende Bohrung 5 hindurch miteinander verbinden. Der Kanal 4, der zum Entweichen der Lufteinschlüsse dient, besitzt die Breite des Imionrauiaes der Form. Er kann gegebenenfalls aber auch schmaler gemacht werden. Figur 3 läßt erkennen, daß jede der sechs dünnen Scheiben mit einem solchen Kanal versehen ist. Die Kanäle selbst können von der 1.1 it to zum Rand der Form in ihrer Tiefe zunehmen, um den Widerstand der austretenden Luft zu verringern.The interior 5 of the shape of Figure 1 is cylindrical, as by the dashed line is indicated, the injection of the injection molding compound takes place from below, while the cavity is closed at the top at β « The shape itself consists of a strong top plate 1, six thin plates 2 and finally one more stronger plate 3, which closes the fora at the bottom. The disks 2 have ground-in channels, the two opposite one another Connect the sides of the mold through the hole 5 in the putty. The channel 4, which is used to escape the Serves air pockets, has the width of the Imionrauiaes of the form. However, it can also be made narrower if necessary. Figure 3 shows that each of the six thin disks is provided with such a channel. The channels themselves can range from 1.1 to The edge of the shape to increase in depth in order to reduce the resistance of the escaping air.
Anlagen;Investments;
3 Patentansprüche HG 25683 claims HG 2568
1 Bl.Zeichnungen (3 Fig.)1 sheet of drawings (3 figs.)
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST13372U DE1877220U (en) | 1961-03-30 | 1961-03-30 | DEVICE FOR VENTILATING INJECTION MOLDING. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST13372U DE1877220U (en) | 1961-03-30 | 1961-03-30 | DEVICE FOR VENTILATING INJECTION MOLDING. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1877220U true DE1877220U (en) | 1963-08-08 |
Family
ID=33150357
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEST13372U Expired DE1877220U (en) | 1961-03-30 | 1961-03-30 | DEVICE FOR VENTILATING INJECTION MOLDING. |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1877220U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19500005A1 (en) * | 1995-01-01 | 1996-07-04 | Seefeldt Rudolf | Device with gaps acting for forced deaeration of casting dies |
-
1961
- 1961-03-30 DE DEST13372U patent/DE1877220U/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19500005A1 (en) * | 1995-01-01 | 1996-07-04 | Seefeldt Rudolf | Device with gaps acting for forced deaeration of casting dies |
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