DE1805090A1 - Synthetic materials prodn - Google Patents

Synthetic materials prodn

Info

Publication number
DE1805090A1
DE1805090A1 DE19681805090 DE1805090A DE1805090A1 DE 1805090 A1 DE1805090 A1 DE 1805090A1 DE 19681805090 DE19681805090 DE 19681805090 DE 1805090 A DE1805090 A DE 1805090A DE 1805090 A1 DE1805090 A1 DE 1805090A1
Authority
DE
Germany
Prior art keywords
mold
plastic
die
male
ultrasonic
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.)
Pending
Application number
DE19681805090
Other languages
German (de)
Inventor
Vogel Dipl-Ing Dr Wilhelm
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE19681805090 priority Critical patent/DE1805090A1/en
Publication of DE1805090A1 publication Critical patent/DE1805090A1/en
Pending 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/022—Melting the material to be shaped
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/0261—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using ultrasonic or sonic vibrations
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C2043/3205—Particular pressure exerting means for making definite articles
    • B29C2043/3266—Particular pressure exerting means for making definite articles vibrating tool 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3636—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons ultrasonically or sonically vibrating, e.g. sonotrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/251—Particles, powder or granules

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

Themoplastic resin is plasticised in the mould cavity between the punch and die by ultrasonic vibration energy transmitted through either the punch or the die and simultaneously compression moulded.

Description

Anlage zur Patent- Anmikdung Verfahren und Vorrichtung zum Herstellen von Gegenständen aus Kunststoff Die Erfindung bezieht sich auf ein Verfahren zum Herstellen von Gegenständen, insbesondere Hohlkörpern aus thermoplastischem Kunststoff, bei dem Kunststoff in einer aus Matrize und Patrize bestehenden Formeinheit plastifiziert und dadurch Verpreßen zwischen Matrize und Patrize zu einem Gegenstand geformt wird.Annex to the patent The invention relates to a method for producing objects, in particular hollow bodies made of thermoplastic material, in which the plastic is plasticized in a molding unit consisting of a female mold and a male mold, thereby pressing between the female and male molds to form an object is shaped.

Es ist beispielsweise durch die deutsche Auslegeschrift DAS 1 236 766 ein Verfahren bekanntgeworden, nach dem Gegenstände aus thermoplastischem Kunststoff dadurch hergestellt werden, daß Kunststoff als Granulat in die Porm eingebracht, unter der Wirkung von Schlagenergie aufgeschmolzen und im Formraum ausgebreitet wird. Nach Abkühlen der Schmelze kann der fertige Gegenstand aus der Form entnommen werden. Ein Nachteil dieses Verfahrens besteht darin; daß die für das Aufschmelzen nötige Energie nur ungenau dosiert werden kann. Es entstehen dann Körper mit ungleicher Homogenität. Hohlkörpern dieser Art, die als Verpackungsmittel für Plssigkeiten oder frPlüssigkeiten mit gelöstem Gas verwendet werden sollen, fehlt eine ausreichende Dichtigkeit.It is, for example, through the German interpretative document DAS 1 236 766 a process became known, according to which objects made of thermoplastic material are produced by that plastic as granules in the Porm introduced, melted under the effect of impact energy and in the mold space is spread. After the melt has cooled, the finished object can be removed from the Form can be taken. A disadvantage of this method is; that the for the energy required for melting can only be dosed imprecisely. It then arise Bodies with unequal homogeneity. Hollow bodies of this type, which are used as packaging means are to be used for liquids or liquids with dissolved gas, insufficient tightness is lacking.

Um. diese Nachteile zu vermeiden, wird nach der Erfindung vorgeschlagen, den Kunststoff in die Formeinheit durch Ultraschallschwingungen zu plastifizieren, die durch die Patrize und/oder die Matrize übertragen werden.Around. to avoid these disadvantages is proposed according to the invention, to plasticize the plastic in the mold unit by ultrasonic vibrations, which are transferred through the male mold and / or the female mold.

Besonders preiswert lassen sich Gegenstände nach dem erfindungsgemäßen Verfahren herstellen wenn als Ausgangsmatrial Kunststoffpulver verwendet wird.Objects according to the invention can be particularly inexpensive Manufacture process when plastic powder is used as the starting material.

Eine Vorrichtung mit einer aus einer Patrize und einer Matrize bestehenden Formeinheit zum Durchführen des erfindungsgemäßen Verfahrens ist dadurch gekennzeichnet, daß die Patrize und/oder Matrize mit einem Schwinger eines Ui-traschallgenerators verbunden ist.A device with one consisting of a male and a female mold Mold unit for performing the method according to the invention is characterized in that that the male and / or female mold with a transducer of a Ui-traschallgenerators connected is.

Bei dem Verfahren nach der Erfindung plastifiziert die Ultraschallenergie ähnlich wie beim Ultraschallschweißen die einzelnen Kunststoffteilchen und verbindet diese fest miteinander. Die dafür nötige Schallenergie kann leicht dosiert werden. Bin weiterer Vorteil besteht darin, daß-auch auf den plastischen Kunststoff Energie übertragen werden kann.In the method according to the invention, the ultrasonic energy plasticizes Similar to ultrasonic welding, the individual plastic particles and connects these firmly together. The sound energy required for this can easily be dosed. Another advantage is that-also on the plastic plastic can be transferred.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt, die eine Vorrichtung zum lIerstellen von becherförmigen Hohlkörpern teilweise im Schnitt vereinfacht zeigt.An embodiment of the invention is shown in the drawing, the one device for lIerstellen of cup-shaped hollow bodies partially in the Simplified section shows.

An einem Ultraschall-Schwinger 1, dessen Erregerspule 2 mit einem Ultraschallgenerator 3 verbunden ist, ist eine kegelstumpfförmige Sonotrode4 mit einem Bund 5 befestigt. Mittels eines Arbeitszylinders.11 ist eine Matrize 6 mit einer kegelstumpfförmigen Aussparung gegen die Sonotrode hebbar, so daß das obere Ende der Matrize 6 gegen den Bund 5 anliegt. -Die Matrize 6 und die Sonotrode 4 umschließen dabei einen becherförmigen Hohlraum 7, der sich an seinem oberen Ende über eine.On an ultrasonic transducer 1, the excitation coil 2 with a Ultrasonic generator 3 is connected, is a frustoconical sonotrode4 with a collar 5 attached. A die 6 is provided by means of a working cylinder. 11 a frustoconical recess liftable against the sonotrode, so that the upper The end of the die 6 rests against the collar 5. -The die 6 and the sonotrode 4 enclose a cup-shaped cavity 7, which is at its upper end over a.

Stufe zu einem Ring 7'erweitert. Die Matrize 6 hat einen ringförmigen Ilohlraum 8, in den ein Zulauf 9 und aus dem ein Ablauf 10 für ein Kühlmedium führen.Step extended to a ring 7 '. The die 6 has an annular shape Ilohlraum 8, in which an inlet 9 and out of which an outlet 10 for a cooling medium lead.

Die Vorrichtung wirkt wie folgt: In die Matrize 6 wird in deren unteren Stellung eine genau abgemessene Menge Kunststoffpulver eingefüllt. Sodann hebt der Arbeitszylinder 11 die Matrize 6 gegen die Sonotrode 4, die durch den Ultrasdhallgenerator 3 und den Schwinger 1 in Längsschwingungen versetzt ist. Beim Zusammendrücken des Kunststoffpulvers in der Matrize 6 durch die Sonotrode 4 wird das Kunststoffpulver durch die einwirkenden Ultraschallschwingungen Fla9,tifiziert. Der auf diese Weise in der durch die Matrize 6 vlsd die Sonotrode 4 gebildeten Formeinheit flüssig oder zahflüssig gemachte Kunststoff verteilt sich unter dem Druck des Arbeitszylinders 11 im gesamten Hohlraum der Formeinheit und nimmt die Gestalt deren Höhlung an. Wenn die Matrize 6 mit ihrem oberen Ende am Bund 5 der Sonotrode 4 anliegt und der plastifizierte Kunststoff im gesamten Hohlraum zwischen Sonotrode 4 und Matrize 6 ausfüllt, wird der Ultraschallgenerator 3 abgeechaltet und in den Hohlraum 8 der Matrize 6 ein Kühlmittel durch den Zulauf 9 eingeleitet. Nach einer beBtimrten Dauer der Abkühlung wird die Matrize 6 wieder gesenkt, worauf der so gebildete Gegenstand aus der Matrize 6 entnommen bzw. von der Sonotrode 4 abgezogen werden kann.The device works as follows: In the die 6 is in the lower Position a precisely measured amount of plastic powder filled in. Then he lifts Working cylinder 11, the die 6 against the sonotrode 4, which is generated by the Ultrasdhallgenerator 3 and the oscillator 1 is set in longitudinal oscillations. When squeezing the Plastic powder in the die 6 through the sonotrode 4 becomes the plastic powder by the acting ultrasonic vibrations Fla9. That way liquid or in the mold unit formed by the die 6 vlsd the sonotrode 4 Plasticized plastic is distributed under the pressure of the working cylinder 11 in the entire cavity of the mold unit and takes the shape of its cavity. When the upper end of the die 6 rests against the collar 5 of the sonotrode 4 and the plasticized plastic in the entire cavity between sonotrode 4 and die 6 fills, the ultrasonic generator 3 is switched off and into the cavity 8 of the A coolant is introduced into the die 6 through the inlet 9. After a limited period the cooling, the die 6 is lowered again, whereupon the object thus formed can be removed from the die 6 or withdrawn from the sonotrode 4.

Claims (4)

AnsprücheExpectations 1. Verfahren zum Herstellen von Gegenständen, insbesondere Hohlkörpern aus thermoplastischem Kunststoff, bei dem Kunststoff in einer aus Matrize und Patrize bestehenden Formeinheit plastifiziert und durch Verpressen zwischen Matrize und Patrize zu einem Gegenstand geformt wird, dadurch gekennzeichnet, daß der Kunststoff in der Formeinheit durch Ultraschallschwingungen plastifiziert wird, die durch die Patrize und/oder die Matrize übertragen werden.1. A method for producing objects, in particular hollow bodies made of thermoplastic plastic, with the plastic in a matrix and male mold existing mold unit and plasticized by pressing between the die and The male mold is formed into an object, characterized in that the plastic is plasticized in the mold unit by ultrasonic vibrations caused by the The male part and / or the female part can be transferred. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die-Patrize in Ultraschall-Längsschwingungen versetzt wird.2. The method according to claim 1, characterized in that the male mold is set in ultrasonic longitudinal vibrations. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß als Ausgangsmaterial Kunststoffpulver verwendet wird.3. The method according to claim 1 or 2, characterized in that as Starting material plastic powder is used. 4. Vorrichtung zum Herstellen von Hohlkörpern nach dem Verfahren nach Anspruch 1, mit einer aus einer Patrize und einer Matrize bestehenden Formeinheit, dadurch gekennzeichnet, daß die Patrize (4) und/oder die Matrize (6) mit einem Schwinger (1) eines Ultraschallgenerators (5) verbunden sind,4. Device for producing hollow bodies by the method according to Claim 1, with a molding unit consisting of a male mold and a female mold, characterized in that the male mold (4) and / or the female mold (6) with a vibrator (1) an ultrasonic generator (5) are connected,
DE19681805090 1968-10-25 1968-10-25 Synthetic materials prodn Pending DE1805090A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19681805090 DE1805090A1 (en) 1968-10-25 1968-10-25 Synthetic materials prodn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681805090 DE1805090A1 (en) 1968-10-25 1968-10-25 Synthetic materials prodn

Publications (1)

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DE1805090A1 true DE1805090A1 (en) 1970-05-21

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033862B1 (en) * 1980-01-28 1983-08-10 BASF Aktiengesellschaft Process for producing a moulded article from pulverulent to granular thermoplastic synthetics
WO1989003298A1 (en) * 1987-10-15 1989-04-20 Schunk Maschinen Und Automation Gmbh Process and device for manufacturing mouldings from particulate materials
US4957668A (en) * 1988-12-07 1990-09-18 General Motors Corporation Ultrasonic compacting and bonding particles
WO1999046098A1 (en) * 1998-03-12 1999-09-16 Diolaiti, Luigi Method and apparatus for forming items made of plastic material whereby the plastic material is heated by ultrasonic vibrations
FR2782667A1 (en) * 1998-09-01 2000-03-03 Internova International Innova PROCESS FOR PROCESSING A PREFORM FOR THE PRODUCTION OF A CONTAINER BY BLOWING
WO2007000380A1 (en) * 2005-06-29 2007-01-04 Robert Bosch Gmbh Method for calibrating the inner measurements of an, in particular, annular-shaped body

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033862B1 (en) * 1980-01-28 1983-08-10 BASF Aktiengesellschaft Process for producing a moulded article from pulverulent to granular thermoplastic synthetics
US4487728A (en) * 1980-01-28 1984-12-11 Basf Aktiengesellschaft Manufacture of a molding from a thermoplastic powder or granular material
WO1989003298A1 (en) * 1987-10-15 1989-04-20 Schunk Maschinen Und Automation Gmbh Process and device for manufacturing mouldings from particulate materials
US4957668A (en) * 1988-12-07 1990-09-18 General Motors Corporation Ultrasonic compacting and bonding particles
WO1999046098A1 (en) * 1998-03-12 1999-09-16 Diolaiti, Luigi Method and apparatus for forming items made of plastic material whereby the plastic material is heated by ultrasonic vibrations
FR2782667A1 (en) * 1998-09-01 2000-03-03 Internova International Innova PROCESS FOR PROCESSING A PREFORM FOR THE PRODUCTION OF A CONTAINER BY BLOWING
WO2000012290A1 (en) * 1998-09-01 2000-03-09 Internova International Innovation Company B.V. Method for treating a preform for producing a container by blow moulding
WO2007000380A1 (en) * 2005-06-29 2007-01-04 Robert Bosch Gmbh Method for calibrating the inner measurements of an, in particular, annular-shaped body
JP2009500198A (en) * 2005-06-29 2009-01-08 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Method for the correction of the internal dimensions of plastic, in particular ring-shaped members
JP4768811B2 (en) * 2005-06-29 2011-09-07 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Method for the correction of the internal dimensions of plastic, in particular ring-shaped members
US8247061B2 (en) 2005-06-29 2012-08-21 Robert Bosch Gmbh Method for calibrating the measurements of an annular body

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