DE6940043U - DEVICE FOR THE MANUFACTURING OF COMPRESSED BODIES WITH DUCTS, PASSINGS AND / OR ROTATIONS. - Google Patents

Description

RÄlEDRICH UhDE GnBH

71 006

October 13th 19 6 9

Device for the production of pressed bodies with indentations, passages and / or indentations

The invention relates to an apparatus for producing pressed bodies with fittings, feedthroughs and / or "ir. turns, right-angled" or at an angle to the body axes, such as insulators with shields, for high-voltage technology after isostatic pressing

body with indentations, passages and / or indentations Material that is difficult to work with or material that requires a complex treatment should be manufactured in this way as far as possible that no machining by material removal is required and the required properties are maintained. Insulators for high voltage technology must have a certain dielectric strength have a certain minimum tensile strength in relation to the electrical voltage. These isolators are bodies with indentations, leadthroughs and / or indentations, whereby so-called screens are obtained by the latter. The isolators are made of a material that is only green Condition can be processed by removing material.

There are two known methods of manufacturing insulators; the wet process and the dry process.

^ ei the wet process are made of plastic material Hubein (cylinder) produced by extrusion. These strokes are then subjected to a drying process of up to 4 yokes. First after this time, the shaping can be done on copy benches. . »After a 1 - 2 day drying time, the isolators are dem subject to final firing.

Lo. the dry process wezden stroke a shorter length (max. diameter; .. ^ jL.cr to the high 1: 1) rr.with light contour provisions; ebun £ en from powder _{ll /} . "; r, i2e: a material r ^ ttels hydraulic Pressing or middle ~ .s of

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^ o ^ citi ^ cher: Pressing process manufactured. In egg. subsequent. ■; o., 'irvor: uhror. outer. the bodies brought to their final shape. ^ -'.- <... λκγ.π the burning process, as mentioned above, take place.

->~~; Drying process over the Xaßverf Ahren the · advantage c. ^ Ss a wet processing with subsequent Filterpressenentv.Cscerur.j, unc cie drying times of about K VJo before η omitted. Dry-.vr.gj rooms are also not required. The hydraulic or isostatic pressing process also has the advantage of producing tension-free and tight hubs, the density a .. per ^ r point of the pressed part being the same. However, the dry process has the disadvantage compared to the wet process that the processing of the more solid dry material is cumbersome and more expensive.

The invention is based on the object of finding a device with the body made of difficult to machine material with indentations, passages and / or by means of the isostatic pressing process or recesses get their final shape. The device or mold is to be designed in such a way that it provides uniform precompression allowed and does not affect the shape during the pressing process.

The object is achieved according to the invention in that a compression mold ir.it Stützeinrichtunge .. (contouring molded parts) is used, which can be locked and released.

The advantages achieved by the invention are in particular: that pressed bodies with deep indentations, passages and / or indentations can be produced in the final form and the material to be pressed can be produced by means of a vibrating or centrifugal device sufficiently evenly and forir.stabil precompacted wercer. can and that this mold the pressure on the material not impaired, since the distances between the center lines of the indentations, passages and / or indentations reduce during the pressing process.

An embodiment of the invention is shown in the drawing -; elit and is described in more detail below. In the drawings Fig. 1 Cie mold for an insulator in section, Fig. 2 ir the die. Cer plan view, Fig. 3 shows the mold in the side view and FIG. H a compact rr.it 2 mutually perpendicular implementing

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Preilverfahrer. ver -.- er.uCte For,?, ir. Fi ^. 1 ..

'Ό1 ^ · :: Γ.όοη Aufbc-u, ur.c das Pre.overf ahrer. wire as fol ^ ~ carried out zv; enei Iige? re.jr orr .'.- Au.o ^ r '-' i ^ psr 1, ir »Fir, · 2 ^1Γ1 <- * - '? Draun:. "C ^ r - ό J * - 1 -" Ü ·, 'iCITj -. 1 "ΰ" tC ... S CuS ^ Ocirinr 1 Γ.Γ \ e 3 2 Z uο (ΰΓΤ.ΓΓ.Ο Γ. ^ C .. c; ~ "* CC Γ. - _....

. - r -.-.- i'C-rrr.-Au.ter.körpo r are cie in two parts. : J ~ üi: z "i ^p ir. £ e 3 cr ^ c orcr.tT - ^ * <'..'. J- ^ lij j.- · j C.". 2Tct U— 'O Γ. ^ 1Π CC Π Λ. Ι, ΘΓΓ.ΓΤ. 1 c; l 3 "ui ^ ΐ. Cj οΙΠ ^ Γ. Ot_S Ll. '. ..Ι IC Γ..". ^ "J". "' .- ur.:t;rcir,ar.cor err. alien. The Klcrj .-. leis tcr. 5 have i'ür eic 1 .-. rc. '. i ü.r.rur _v der Sch * cuben 4 Lc.nglccher, wii. ir. Fi ^. b can be seen. The silk tensioning screws 6 on each side are tightened and pull the support ring against the inner wall of the mold body ~ the shape is made. X'un the powder to be pressed is poured into the Gununirr.atrize and precompacted on a vibrating table. The powder fills the Gurrur.irr.atrize completely. The support rings 3 give Gen Schirme the Guirjr.imaxrize hold at the filler If the Guiruniir die is sufficiently filled, it is closed by means of the jacketed stopper 8. The Uiri jacket of the stopper is also wrapped around the mold like a collar and held in place by means of the rubber clamping ring 9. In the thus prepared press mold the clamping screws 6 are now loosened, whereby cie clamping strips 5 can move inwards and c ^ e support rings with the screws h, which are now freely movable axially in the elongated holes of the clamping strips, become free together. Then the mold is brought into the recipient with the pressure fluid. During the pressure build-up, the pressure comes into effect on the rubber die via the bores and openings in the press mold, the sealing plug and the support rings and compacts the pulper to be pressed.

Since the support rings can move freely in the axial direction, impair they do not prevent any axial change in distance between the insulation screens as a result of the pressure. After the pressing process the mold is removed from the recipient, the clamping ring 2 and the Gummisρannring 9 removed, the mold opened and the rubber die ».. peeled off from the compact. After the raw glaze has been applied, the firing process takes place.

In Fig. 3, the elongated holes in the terminal strip 5 can be seen, the enable the axial displacement of the support rings or other support devices or contouring molded parts. Fig. H shows one Isolator with 2 bushings arranged at right angles to one another

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- "• u; ₁₀ on, as it is used, for example, for vcrspanr.ur.ger. Front. Tramway overhead lines. Such a precut body can also be produced according to cbi _o e;.; Ancestors, incen the ineniie ^ encen contour ^ ebenden r'ürr. '. "ceile in the press form before the pre ^ vorganr, by inrer Arrexierun ^ jc ^ ös t v.'ercen.

Mi-L of the required mold can be produced by the isosta ~ ical pressing process materials of any type, if it can be pressed sine _v processed into articles of any shape with indentations, bushings and / or turned recesses. The material can be, for example, ceramic raw material, powdered hard metal, plastic or sintered metal.

694004317.1170

Claims (1)

protection request Press mold for the production of price bodies after the isostatic Pressing process j characterized in that the mold contour containing molded parts that can be locked and released. 694004317.12.70