DE876909C - Process and injection molding device for the production of moldings from organic, powdery molding compounds - Google Patents

Process and injection molding device for the production of moldings from organic, powdery molding compounds

Info

Publication number
DE876909C
DE876909C DES9707D DES0009707D DE876909C DE 876909 C DE876909 C DE 876909C DE S9707 D DES9707 D DE S9707D DE S0009707 D DES0009707 D DE S0009707D DE 876909 C DE876909 C DE 876909C
Authority
DE
Germany
Prior art keywords
injection molding
organic
moldings
powdery
injection
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
Application number
DES9707D
Other languages
German (de)
Inventor
Walter Bucksch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DES9707D priority Critical patent/DE876909C/en
Application granted granted Critical
Publication of DE876909C publication Critical patent/DE876909C/en
Expired legal-status Critical Current

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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/58—Details
    • B29C45/585—Vibration means for the injection unit or parts thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

Bei der Verarbeitung pulverförmiger, organischer Preßmassen zu Formkörpern im Spritzgußverfahren muß die Masse vorher auf die geeignete Temperatur vorgewärmt werden, was in dem Spritzzylinder der Spritzgußvorrichtung selbst erfolgt. When processing powdery, organic molding compounds to moldings In the injection molding process, the mass must first be preheated to the appropriate temperature what takes place in the injection cylinder of the injection molding machine itself.

Diese Erwärmung ist jedoch mit gewissen Schwierígkeiten verbunden, da die Preßmassen an s4ch -bereits eine schlechte Wärmeleitfähigkeit besitzen, die bei dem pulverförmigen Zustand der Masse noch dadurch beeinträchtigt wird, daß das Pulver einen großen Luftgehalt besitzt.However, this warming is associated with certain difficulties since the molding compounds on s4ch already have poor thermal conductivity, the in the powdery state of the mass is still affected by the fact that the Powder has a high air content.

Gemäß der Erfindung kann nun die Erwärmung dieser Preßmassen dadurch wesentlich begünstigt werden, daß dem Spritzzylinder der Spritzgußvorrichtung Rüttelschwingungen aufgedrückt werden. Die Schwingungen haben eine bedeutende Verdichtung des Preßmassepulvers zur Folge, so daß die Wärmeübertragung von den Heizkörpern in das Innere der Masse wesentlich gefördert wird. According to the invention, this molding compound can now be heated be significantly favored that the injection cylinder of the injection molding device shaking vibrations be pushed on. The vibrations have a significant compression of the molding compound powder result, so that the heat transfer from the radiators to the interior of the mass is funded significantly.

Das Rütteln kann mit beliebigen Schwingungszahlen, beispielsweise zwischen 10 und 500 Schwingungen in der Sekunde, erfolgen. Vorteilhaft können übliche elektromagnetische oder elektrodynamische Rüttelvorrichtungen verwendet werden, die unmittelbar an das Wechsel stromnetz angeschlossen werden. Man kann gegebenenfalls für den Zweck der Erfindung aber auch Schwingungen in der Größenordnung von Ultraschall in Betracht ziehen, wie sie beispielsweise mit magnetostriktiven oder piezoelektrischen Schwingungen erzeugt werden.The shaking can be done with any number of vibrations, for example between 10 and 500 oscillations per second. Usual electromagnetic or electrodynamic vibrators are used, that are directly connected to the AC power grid. One can optionally for the purpose of the invention, however, also vibrations of the order of magnitude of ultrasound consider such as using magnetostrictive or piezoelectric Vibrations are generated.

Für die Zwecke der Erfindung eignen sich vorzugsweise übliche stehende Spritzgußvorrichtungen mit lotrechter Kolbenbewegung. In der Zeichnung ist ein Ausführungsbeispiel einer solchen Spritzgußvorrichtung, wie sie für härtbare oder wärmebildsame Kunstharzmassen in Betracht kommt, schematisch dargestellt. For the purposes of the invention, conventional standing ones are preferably suitable Injection molding devices with perpendicular piston movement. In the drawing is an embodiment such an injection molding device as it is for curable or thermosensitive synthetic resin compositions comes into consideration, shown schematically.

Die Vorrichtung besteht aus dem Spritzzylinder 1, aus der die Masse von dem Spritzkolben 2 durch die Düse 3 in die (nicht dargestellte) Form gespritzt wird; dabei wird sie, wie an sich bekannt, beispielsweise durch den eingebauten Heizkörper 4 im Vorbeifiießen auf die erforderliche Spritztemperatur erhitzt. Nach Rückzug des Spritzkolbens 2 wird neue Masse durch den Fülikolben 5 aus dem Vorratsbehälter 6 in den Spritzzylinder I nachgefüllt. Gemäß der Erfindung ist nun an der Wandung des Spritzzylinders 1 eine Rüttelvorrichtung 2 angeflanscht, die dem Zylinder Rüttelschwingungen aufzwingt und dadurch eine Verdidhtung der eingefüllten Masse bzw. Entfernung der in ihr enthaltenen Luft zur Folge hat, wodurch eine bessere und schnellere Durchwärmung der Masse erzielt wird. Die Anordnung kann dabei vorzugsweise so getroffen werden, daß die von der Rüttelvorrichtung 2 erzeugten Schwingungen in lotrechter Richtung erfolgen. The device consists of the injection cylinder 1, from which the mass injected from the injection plunger 2 through the nozzle 3 into the (not shown) mold will; it is, as is known per se, for example by the built-in Heating element 4 heated to the required spray temperature in passing. To Withdrawal of the injection piston 2 is new mass through the filling piston 5 from the storage container 6 refilled into the injection cylinder I. According to the invention is now on the wall of the injection cylinder 1, a vibrating device 2 is flanged, which vibrates the cylinder forces and thereby a Verdidhtung the filled mass or removal of the air contained in it results, whereby a better and faster warming through the mass is achieved. The arrangement can preferably be made in such a way that that the vibrations generated by the vibrator 2 in the vertical direction take place.

Claims (2)

PATENTANSPRÜCHE: I. Verfahren zum Herstellen von Formkörpern aus pulverförmigen, organischen Preßmassen im Spritzgußverfahren, dadurch gekennzeichnet, daß dem Spritzzylinder (1) Rüttelschwingungen aufgedrückt werden. PATENT CLAIMS: I. Process for producing molded bodies from powdery, organic molding compounds in the injection molding process, characterized in, that the injection cylinder (1) shaking vibrations are pressed. 2. Spritzgußvorrichtung zur Durchführung des Verfahrens nach Anspruch I, gekennzeichnet durch eine auf den Spritzzylinder (i) ein wirkendeRüttelvorriclítung (2) an sich bekannter Bauart. 2. Injection molding device for performing the method according to claim I, characterized by a vibrating device acting on the injection cylinder (i) (2) known design.
DES9707D 1944-02-06 1944-02-06 Process and injection molding device for the production of moldings from organic, powdery molding compounds Expired DE876909C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES9707D DE876909C (en) 1944-02-06 1944-02-06 Process and injection molding device for the production of moldings from organic, powdery molding compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES9707D DE876909C (en) 1944-02-06 1944-02-06 Process and injection molding device for the production of moldings from organic, powdery molding compounds

Publications (1)

Publication Number Publication Date
DE876909C true DE876909C (en) 1953-05-18

Family

ID=7473076

Family Applications (1)

Application Number Title Priority Date Filing Date
DES9707D Expired DE876909C (en) 1944-02-06 1944-02-06 Process and injection molding device for the production of moldings from organic, powdery molding compounds

Country Status (1)

Country Link
DE (1) DE876909C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1186608B (en) * 1960-10-06 1965-02-04 Ankerwerk Gebr Goller Screw injection molding machine for processing thermoplastics
DE1271307B (en) * 1960-08-05 1968-06-27 Monsanto Co Device for melt spinning thermoplastic polymers
DE3516666A1 (en) * 1985-05-09 1986-11-13 Heinz Dr.-Ing. 5100 Aachen Derek Process for producing a moulding, in particular from low-viscosity moulding compositions
DE3724996A1 (en) * 1987-07-28 1989-02-09 Siemens Ag Filling of a volume with a resin or adhesive
EP0655308A1 (en) * 1993-10-11 1995-05-31 Ixtlan Aktiengesellschaft Device for transporting in the plastic state substances with a high coefficient of friction, facilitating the process by vibration

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1271307B (en) * 1960-08-05 1968-06-27 Monsanto Co Device for melt spinning thermoplastic polymers
DE1186608B (en) * 1960-10-06 1965-02-04 Ankerwerk Gebr Goller Screw injection molding machine for processing thermoplastics
DE3516666A1 (en) * 1985-05-09 1986-11-13 Heinz Dr.-Ing. 5100 Aachen Derek Process for producing a moulding, in particular from low-viscosity moulding compositions
DE3724996A1 (en) * 1987-07-28 1989-02-09 Siemens Ag Filling of a volume with a resin or adhesive
EP0655308A1 (en) * 1993-10-11 1995-05-31 Ixtlan Aktiengesellschaft Device for transporting in the plastic state substances with a high coefficient of friction, facilitating the process by vibration

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