CH316483A - Process for the production of moldings from plastic and hardened masses, and moldings produced by this process - Google Patents

Process for the production of moldings from plastic and hardened masses, and moldings produced by this process

Info

Publication number
CH316483A
CH316483A CH316483DA CH316483A CH 316483 A CH316483 A CH 316483A CH 316483D A CH316483D A CH 316483DA CH 316483 A CH316483 A CH 316483A
Authority
CH
Switzerland
Prior art keywords
bodies
shape
final
preform
plastic
Prior art date
Application number
Other languages
German (de)
Inventor
Wuest H Peter
Original Assignee
Wuest H Peter
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 Wuest H Peter filed Critical Wuest H Peter
Publication of CH316483A publication Critical patent/CH316483A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/027Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles having an axis of symmetry

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Description

  

  



  Verfahren zum Herstellen von   Formkorpern    aus plastischen und erhärteten Massen, und nach diesem Verfahren hergestellter   Formkorper   
Die vorliegende Erfindung bezieht sich auf ein Verfahren zum Herstellen von Formkör  pern    aus plastischen und erhärteten Massen.



  Erfindungsgemäss ist vorgesehen, dass die plastische Masse in einer Vorform unter Verwendung eines   Abstreichorgans    zur Entfernung von überflüssigem Material in eine der gewünschten Form einigermassen ähnliche Form von annähernd gleichem Rauminhalt wie die endgültige Form vorgeformt wird, und dass der vorgeformte K¯rper nachher in eine Fertigform gebracht wird, in welcher sie mit Hilfe eines   Pressstempek    in die endgültige Form gepresst wird.



   Zwei Ausführungsbeispiele des   erfindungs-    gemässen Verfahrens sind in einzelnen Stufen in der beiliegenden Zeichnung dargestellt. Es zeigen :
Fig.   1    eine erste Möglichkeit zur Herstellung der Vorform,
Fig. 2 das Fertigpressen,
Fig. 3 einen fertigen Rohrummantelungsk¯rper,
Fig. 4 eine Variante zum Verfahren nach den Fig.   1    und 2.



   Die dargestellten Zeichnungsfiguren beziehen sich auf die Herstellung von Formkörpern   10 nach    Fig. 3, welche die eine UmrisshÏlfte einer   Rohrummantelung    zu bilden bestimmt sind.



   Es handelt sich demgemäss vor allem um prismatische Körper von halbkreisförmigem Profil, die aus einem erhärteten Wärmeisola  tionsmaterial besteben und an Stelle    der üblicherweise verwendeten Bandagen von    Heisswasser-, Dampf-und Kühlmediumsleitun-    gen zu deren Wärmeisolierung verwendet werden können. F r Abzweigstellen werden besonders geformte Isolierschalenkorper   verwen-    det.



   Gemϯ Fig.   1    wird eine heisse dickfliissige Masse 11, die zum Beispiel aus   : K : orkmehil mit      beigemischtem      Bitumenzusatz    als Bindemittel besteht oder   als Bindemittel Kunstha. rzmassen    mit   Härtungsbeimisehungen enthält,    in eine Vorform 12 eingefüllt und mittels einer Abstreiehsehablone 13 in die etwa nierenförmige   Quersehnittform vorgeformt.   



   Die sieh ergebende Querschnittform hat t eine gewisse   Verwandtschaft    zur endgültig angestrebten Halbkreisring-Profilform und hat vor allem annähernd den gleichen   Quersehnitt-      Flächeninhalt.    Die Formen 12 können mitsamt dem vorgeformten Material 11 nochmals er  hitzt    werden und nachher in eine Fertigform 14 gekippt werden, worin die Masse 11a mit Hilfe des Stempels 15 zur endgültigen Profilform 10 gepresst wird.



   Die   Fertigformen    14 und die Pressstempel 15 werden vorzugsweise durch Kühlluft oder Kühlwasser   geküMtt,    damit in ihr die Formkörper rasch erstarren.



   Gemäss Fig. 4 können mit einer gegenüber Fig. 1 anders geformten Vorform 16 und einer entsprechend anders geformten Abstreichschablone 17 ebenfalls   Massekörper    18 von   nierenformigem    Querschnitt hergestellt werden, die in Richtung des Pfeils 19 in eine Fertigform 14 geschoben werden können, in weleher sie durch den Pressstempel 15 in die endgültige Fertigform 10 (Fig. 3) gepresst werden.



   Es ist wichtig, dass die plastische   Au,, -      gangsmasse    zu einem möglichst kompakten Gef ge zusammengepresst werden kann, weshalb beispielsweise keine   schaumigen    Binde  mittelsubstanzen,    sondern zähflüssige Bindemassen verwendet werden sollten.



   Die fertigen   Sehalenkörper    10 können mit Hilfe von Drahtbinden raseh um Rohrleitungen gelegt und befestigt werden.



  



  Process for the production of moldings from plastic and hardened masses, and moldings produced according to this process
The present invention relates to a method for producing molded bodies from plastic and hardened masses.



  According to the invention it is provided that the plastic mass is preformed in a preform using a scraper to remove excess material in a shape that is somewhat similar to the desired shape and has approximately the same volume as the final shape, and that the preformed body is subsequently formed into a finished form is brought, in which it is pressed into the final shape with the help of a press punch.



   Two exemplary embodiments of the method according to the invention are shown in individual stages in the accompanying drawing. Show it :
1 shows a first possibility for producing the preform,
2 the final pressing,
3 shows a finished tubular casing body,
4 shows a variant of the method according to FIGS. 1 and 2.



   The drawing figures shown relate to the production of molded bodies 10 according to FIG. 3, which are intended to form a contour half of a pipe casing.



   Accordingly, it is primarily a matter of prismatic bodies with a semicircular profile, which consist of a hardened thermal insulation material and can be used for thermal insulation in place of the commonly used bandages of hot water, steam and cooling medium lines. Specially shaped insulating shell bodies are used for branch points.



   According to Fig. 1, a hot, viscous mass 11 is made up, for example, of: K: orkmehil with added bitumen as a binder or synthetic resin as a binder. Contains rzmassen with hardening additives, filled into a preform 12 and preformed into the approximately kidney-shaped cross-sectional shape by means of a stripping template 13.



   The resulting cross-sectional shape has a certain relationship to the semicircular ring profile shape ultimately aimed at and, above all, has approximately the same cross-sectional area. The molds 12, together with the preformed material 11, can be heated again and then tipped into a finished mold 14, in which the mass 11a is pressed into the final profile shape 10 with the aid of the punch 15.



   The finished molds 14 and the ram 15 are preferably cooled by cooling air or cooling water, so that the moldings quickly solidify in them.



   According to FIG. 4, with a preform 16 shaped differently than in FIG. 1 and a correspondingly differently shaped scraper 17, mass bodies 18 of kidney-shaped cross-section can also be produced, which can be pushed in the direction of arrow 19 into a finished form 14 in which they can be passed through the Press ram 15 are pressed into the final finished form 10 (FIG. 3).



   It is important that the plastic starting material can be pressed together to form a structure that is as compact as possible, which is why, for example, viscous binding materials should not be used, but rather thick binding materials.



   The finished brace body 10 can be laid around pipes and fastened with the help of wire ties.

 

Claims (1)

PATENTANSPRÜCHE I. Verfahren zum Herstellen von Formkörpern aus plastischen und erhärteten Massen, dadurch gekennzeichnet, dass die plastische Masse in einer Vorform unter Verwendung eines Abstreichorganes zur Entfernung von überflüssigem Material in eine der gewünsehten Form einigermassen ähnliche Form von annähernd gleichem Rauminhalt wie die endgültige Form vorgeformt wird, und dass die vorgeformte Masse nachher in eine Fertigform gebracht wird, in welcher sie mit Hilfe eines Pressstempels in die endgültige Form gepresst wird. PATENT CLAIMS I. A method for producing molded bodies from plastic and hardened masses, characterized in that the plastic mass is preformed in a preform using a scraper to remove superfluous material into a shape somewhat similar to the desired shape and having approximately the same volume as the final shape is, and that the preformed mass is subsequently brought into a finished form in which it is pressed into the final shape with the aid of a press ram. II. Nach dem Verfahren von Patentanspruch I hergestellter Formkorper, dadureh gekennzeichnet, dass er aus erhärtetem Wärmeisolationsmaterial besteht und die eine Umriss- hÏlfte (10) einer Rohrummantelung bildet. II. Molded body produced according to the method of claim I, characterized in that it consists of hardened thermal insulation material and which forms an outline half (10) of a pipe casing. UNTEBANSPRÜCHE 1. Verfahren nach Patentanspruch I zum Herstellen von Formk¯rpern aus nur in warmem Zustand verformbarem Material, dadurch gekennzeichnet, dass die vorgeformten Körper in der Vorform noch einmal erhitzt werden und nachher zum Fertigpressen in die Endform gebraeht werden. SUBCLAIMS 1. The method according to claim I for producing molded bodies from material which can only be deformed in a warm state, characterized in that the preformed bodies are heated again in the preform and then brewed into the final shape for final pressing. 2. Verfahren nach Patentanspruch 1 zur Herstellung von Rohrummantelungskörpern (10) mit Halbkreisringprofil, dadurch gekennzeichnet, dass in der Vorform mit Hilfe einer Abstreichschablone zuerst Körper von nierenförmigem Querschnitt hergestellt werden und diese dann in einer Fertigform (14) mit Hilfe eines Pressstempels (15) in die endgültige Halbkreisring-Profilform gepresst werden. 2. The method according to claim 1 for the production of tubular casing bodies (10) with a semicircular ring profile, characterized in that bodies of kidney-shaped cross-section are first produced in the preform with the aid of a scraping template and then in a finished form (14) with the aid of a press punch (15) be pressed into the final semicircular profile shape. 3. Verfahren nach Unteranspruch 2, dar durch gekennzeiehnet, dass die Fertigform und der Pressstempel fortwährend gekühlt werden. 3. The method according to dependent claim 2, characterized by gekennzeiehnet that the finished mold and the ram are continuously cooled.
CH316483D 1953-12-31 1953-12-31 Process for the production of moldings from plastic and hardened masses, and moldings produced by this process CH316483A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH316483T 1953-12-31

Publications (1)

Publication Number Publication Date
CH316483A true CH316483A (en) 1956-10-15

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Application Number Title Priority Date Filing Date
CH316483D CH316483A (en) 1953-12-31 1953-12-31 Process for the production of moldings from plastic and hardened masses, and moldings produced by this process

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CH (1) CH316483A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949731A1 (en) * 1978-12-11 1980-06-19 United Technologies Corp DEVICE AND METHOD FOR SHAPING RIBBED SURFACE MATERIAL

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949731A1 (en) * 1978-12-11 1980-06-19 United Technologies Corp DEVICE AND METHOD FOR SHAPING RIBBED SURFACE MATERIAL

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