DE1479428A1 - Method for upholstering devices cast in cast synthetic resin - Google Patents

Method for upholstering devices cast in cast synthetic resin

Info

Publication number
DE1479428A1
DE1479428A1 DE19651479428 DE1479428A DE1479428A1 DE 1479428 A1 DE1479428 A1 DE 1479428A1 DE 19651479428 DE19651479428 DE 19651479428 DE 1479428 A DE1479428 A DE 1479428A DE 1479428 A1 DE1479428 A1 DE 1479428A1
Authority
DE
Germany
Prior art keywords
synthetic resin
cast
upholstery
devices
resin
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
Application number
DE19651479428
Other languages
German (de)
Other versions
DE1479428B2 (en
DE1479428C3 (en
Inventor
Karl Allmendinger
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of DE1479428A1 publication Critical patent/DE1479428A1/en
Publication of DE1479428B2 publication Critical patent/DE1479428B2/en
Application granted granted Critical
Publication of DE1479428C3 publication Critical patent/DE1479428C3/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00Processes for applying liquids or other fluent materials
    • B05D1/34Applying different liquids or other fluent materials simultaneously
    • 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
    • B29C37/00Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/005Compensating volume or shape change during moulding, in general
    • 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
    • B29C41/00Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/08Coating a former, core or other substrate by spraying or fluidisation, e.g. spraying powder
    • 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
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/34Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3406Components, e.g. resistors

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Description

Verfahren aun Polstern von in verfdLeßbarem Kunstharz eineefcossenen Geräten Das BingieBen gröBerer Metallteile in vergießbares Kunstharz, welche einer elektrischen Beanspruchung unterliegen, bereitet wegen der verschiedenen Ausdehnungskoeffisienten zwischen Harz und Eingußteil und des Polymerisationsschwundes des Harzes häutig erhebliche Schwierigkeiten. Die Aufgabe, dadurch entstehende Risse und BrUche im Harz su vermeiden, wird in herkömmlicher Weise dadurch gelöst, daß die einzugieß@nden Teile mit verachiedensten volumelastischen Werkstoffen gepolstert werden, un ein Schrumpfen des Harzumgusses ohne schädliche Wirkung zu ermöglichen. Um ein Eindringen des Harzes in die Poren oder Kapillaren dieser Polsterung zu vermeiden, wird auf diese ein abdichtender Belag aufgebracht und schließlich dieser Belag noch mit einer leitenden oder halbleitenden Schicht, beispielsweise aus Graphit, versehen, damit er elektrisch nicht beansprucht wird. Das Aufbringen dieser Polsterung, Abdichtung und Abschirmung ist jedoch zeitraubend und kostspielig. Method of upholstering a resin encapsulated in edible resin Devices The casting of larger metal parts in castable synthetic resin, which is a subject to electrical stress, prepares because of the different expansion coefficients between the resin and the sprue and the polymerisation shrinkage of the resin considerable difficulties. The task of the resulting cracks and breaks in the Resin avoid su, is solved in the conventional manner that the pouring in Parts are upholstered with various volumetric elastic materials, and one To allow shrinking of the resin encapsulation without damaging effect. To an intrusion To avoid the resin getting into the pores or capillaries this padding will be on this applied a sealing covering and finally this covering still with a conductive or semiconducting layer, for example made of graphite, provided with it it is not electrically stressed. Applying this padding, waterproofing however, shielding is time consuming and expensive.

Nun lot ein Gießharzstromwandler bekannt, dessen Eisenkern bsw. Wicklung nit einea Überzug aus vernetzendem, elastischen oder kompressiblem Werkstoff versehen und mit Gießharz umhfillt ist, dessen thermischer Ausdehnungskoeffisient kleiner lot als der des elastischen Werkstoffes. Auch bei dieses Stromwandler ist noch immer das Polstern, Abschirmen und Vergießen in getrennten Arbeitsgängen notwendig, die entsprechende Kosten verursachen.Now solder a cast resin current transformer known whose iron core bsw. Winding not provided with a cover made of cross-linking, elastic or compressible material and is encased with casting resin, the coefficient of thermal expansion of which is smaller lot than that of the elastic material. Also with this current transformer is still the upholstery, shielding and potting are necessary in separate operations cause corresponding costs.

Auch ein anderes, bekanntes Polsterverfahren mit Kunststoffchaux beruht auf demselben Prinsip.Another well-known upholstery process is based on plastic chaux on the same prinsip.

Be wird daher, us die genannten Nachteile zu vermeiden, vorgeschlagen, die vorliegende Aufgabe durch ein Verfahren zum Polatern von in vergieBbarem Kunotharz eingegossenen Geräten, insbesondere elektrischen Strom führenden Metallteilen, bei denen die eingegossenen Tells zunächst mit einem Überzug aus elastischen, gegebenenfalls kompressiblen Werkstoffen versehen sind, der gegebenenfalls abdichtende Belage und/oder leitende oder halbleitende Schichten aufweist, auf welche ein UmguB aus vergießbarem Kunstharz aufgebracht wird, su lösen. Gemäß der Erfindung wird auf die einzubettenden Tells ein spritzfähiges Kunstharz susammen mit einem achäusenden Treibmittel und verschiedenen, die Forderung nach Festigkeit und Elastizität ertUllenden Komponenten, wie Härter, Flexibilisatoren und Besohleuniger, aufgespritzt, nach Aushärten der dadurch entstehenden Polsterung ein flexibilisiertes, vergießbares Kunstharz auf diese Polsterung und darüber ein kunstharzgebundener Leitlack aufgetragen. Dabei kann das Aufspritzen beispielsweise mit einer handelsUblichen Mehrkomponenten-Dosier-Spritseinrichtung geschehen. Das auf das aufgeschäumte Kunsthars als Deckschicht aufgebrachte flexibilisierte Harz wird dann in der Regel ohne 8chEuEenae8 Treibmittel verwendet.It is therefore proposed to avoid the disadvantages mentioned, the task at hand by a method for polishing Kunotharz in pourable resin cast-in devices, in particular metal parts carrying electrical current which the cast-in Tells initially with a coating of elastic, if necessary compressible materials are provided, the possibly sealing coverings and / or Has conductive or semiconductive layers on which a castable coating Resin is applied, see below. According to the invention, the to be embedded Tells an injectable synthetic resin together with a spraying propellant and various components that meet the requirements for strength and elasticity, such as hardeners, flexibilizers and accelerators, sprayed on after the hardening the resulting upholstery is made of a flexible, castable synthetic resin this padding and a synthetic resin-bonded conductive varnish applied over it. Included For example, spraying can be done with a commercially available multi-component dosing spray device happen. The flexibilized layer applied to the foamed synthetic resin as a top layer Resin will then usually used without 8chEuEenae8 propellants.

Der Vorteil diesels Verfahrena liegt vor allem darin, daB keine voneinander getremnt vorsunehmenden Arbeitagänge sus Postera, Dichten und Absohir » en mehr notwendig sind, sondern daß ies durch einen zuaammenhangenden Arbeitagang mittela ein Gerätes vorgenommen werden kann. Ein weiterer Vorteil ergibt sich dann, wenn das vergießbare Kunsthars und das Treibmittel, sowie die übrigen Komponenten so verapritst werden, daß sie sich erst im Spritsstrahl mischen, weil dann ein mogliehee UnbraueBbarwerven der Spritseinrichtung duroh vorzeitig an-oder aushärtendes Gießharz vermieden wird.The main advantage of this method lies in the fact that none of them are mutually exclusive separately undertaking work sessions sus postera, poetry and absohir »s more are necessary, but that this is done by means of a coherent course of work a device can be made. Another advantage arises when the castable synthetic resin and the propellant, as well as the other components as above be verapritst that they first mix in the spray, because then a possible Unbearable nerves of the spraying device due to cast resin hardening or hardening prematurely is avoided.

3Seiten Beschreibung 1 Patentanspruch 3 pages description 1 claim

Claims (1)

Verfahren us Polstern ton in vergießbarem Kunstharz eingegossenen Geräten, insbesonders elektrischen Strom führenden lLetallteilen, bei dinar die eingegogsenen Teile zunächst mit einem Uberzug aus elastischen, gegebenenfalls komprebbiblen Werketoffen vereehen aind, der gegebenenfalls abdichtende BelOge und/oder leitende oder halbleitende Schichten aufweist, auf welche ein Umgu6 au4 sergloBbtem Kunstharz autebraoht wird dadurch gekennzeichnet, daB auf die einzubettenden Telle ein apritzthienathartUBammenmiteinmaohau-t mendenTreibmitteldechiedenM,dieFrderun'na Festigkeit und Elastisität erfüllenden Komponenten, @@e Hürter, Plexibilisatoren und Besohleuniger, aufgeepritat. werdeni naoh Aushkrten der dadurch entetehendea Polsterung ein flexibiun lisierte, vergie8bares Kunstharz auf diese Polsterung und darober ein kunstharsgebundener Leitlack aufgetragen werden.Method of upholstery clay cast in castable synthetic resin Devices, especially metal parts carrying electrical current, at dinar die infused parts first with a coating of elastic, possibly compressible Materials are recognized, the possibly sealing lining and / or conductive or has semiconducting layers on which a rubber-coated synthetic resin surrounds it autebraoht is characterized by an apritzthienathartUBammenmiteinmaohau-t on the part to be embedded Using blowing agents, there are differences that meet the requirements for strength and elasticity Components, @@ e Hürter, plexibilizers and accelerators, checked out. will i After curing the resulting upholstery a flexible, pourable one Synthetic resin was applied to this upholstery and a synthetic resin-bonded conductive varnish on top will.
DE19651479428 1965-07-12 1965-07-12 Method for wrapping devices Expired DE1479428C3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL0051104 1965-07-12

Publications (3)

Publication Number Publication Date
DE1479428A1 true DE1479428A1 (en) 1969-07-10
DE1479428B2 DE1479428B2 (en) 1973-07-19
DE1479428C3 DE1479428C3 (en) 1975-09-25

Family

ID=7273850

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19651479428 Expired DE1479428C3 (en) 1965-07-12 1965-07-12 Method for wrapping devices

Country Status (1)

Country Link
DE (1) DE1479428C3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2541670A1 (en) * 1974-09-19 1976-04-01 Matsushita Electric Ind Co Ltd REEL WITH RESIN PACKING
DE3741032A1 (en) * 1987-12-03 1989-06-15 Mitsubishi Electric Corp HIGH VOLTAGE TRANSFORMER
DE4104868A1 (en) * 1991-02-17 1992-08-20 Moderne Maschinen Apparate Wer ISOLATED WINDING AND METHOD AND SEMI-FINISHED MATERIAL FOR THEIR MANUFACTURE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2541670A1 (en) * 1974-09-19 1976-04-01 Matsushita Electric Ind Co Ltd REEL WITH RESIN PACKING
DE3741032A1 (en) * 1987-12-03 1989-06-15 Mitsubishi Electric Corp HIGH VOLTAGE TRANSFORMER
DE4104868A1 (en) * 1991-02-17 1992-08-20 Moderne Maschinen Apparate Wer ISOLATED WINDING AND METHOD AND SEMI-FINISHED MATERIAL FOR THEIR MANUFACTURE

Also Published As

Publication number Publication date
DE1479428B2 (en) 1973-07-19
DE1479428C3 (en) 1975-09-25

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)