DE1525494A1 - Pressure connection - Google Patents

Description

£> r. Expl.

Dlpl.-Ing. Egon Prince J. Dr. Gertrud Haurer .ooo M ^ ₇ -P -... ,, J _0,. Dlpl.-Ing. Gottfried quieter

Patent attorneys 1 5 2 5 A 9 A

Telegram·! labyrinth munich

Telephone ι 83 15 10 • Postal check account ι Manchen 117078

tfichard L. Olson, 8701 Lynnwood Drive,

Hickory Hills, Illinois / USA.

Our sign; 0 276

Pressure connection

This invention relates generally to compression joints with an elastomeric weather strip Material with compressible gas cells and relates in particular to the sealing of hollow assemblies, in which separable connection points against penetration of a Pressure difference must be sealed, such. B. in core boxes, die casting molds, blow plates and molding boxes or molds engaged with these, and in other enclosures where an effective seal against internal or external pressure is required at times.

.ι-ine tongue and groove seal that allows the use of compressible elastomeric material with closed

ot «

S09825 / 0842 ¹ ^ n original

including its cells is already known. These Seal assembly has been found to be quite successful in practice, but it requires that a suitable groove is provided in a parting surface to accommodate the tongue-shaped strip of the sealing strip, which is carried by a groove in the associated separation surface and is fixed in it.

Avoiding the corresponding groove in one of the parting surfaces is the primary property of another earlier arrangement, “in which the compressible elastomeric Sealing strip is carried in a groove in one of the parting surfaces, and one normally protruding Hippe, which has been pressed into the body of the sealing strip through the opposite separating surface without a groove will. This construction has proven to be quite advantageous in practice and especially where there is economically or physically undesirable that to provide a corresponding groove receiving the sealing rib in the opposite separating surface, for example where a multitude of successive elements with sealingly engaged with the element carrying the seal must be brought *.

In

909825/084

In both of the known arrangements mentioned, the element carrying the seal has a sealing rib which normally protrudes from the interface in which it is fixed. In heavy-duty conditions, where e.g. For example, if rigid elements are pulled relatively over the sealing surface, damage is often caused by cutting off or pulling out portions of the protruding sealing rib. Under conditions where the A I'rennflächen must be extremely limited distance relationship during relative movement of the elements, is pulling out the protruding | Rib is sometimes a problem. Highly protruding parting lines are also a problem, particularly in relation to the use of the compressible strip or rib shape of the gasket due to the tension in joining and separating the separable elements. Also, of course, both earlier forms of gasket required at least one sample plate with a milled hat in it for molding the rigid edge or protrusion of the gasket. Milling the fury is difficult and expensive, especially with complicated contours.

"An important aim of the present invention is to

909825/0842

to provide a novel and improved seal, '■■ -' ■ is particularly suitable for temporarily sealing separable compounds in industrial operations, in addition _to: the tongue UUD hat and the pressure seals DER above-mentioned arrangements, and the progressive elastomeric material with compressible gas cells but uses any protruding tabs, tipping or ridges in the non-sealing state that avoids sealing. ■ --.- ^; ''"'" -

Another object of the invention is to provide a new and improved pressure connection which has a sealing strip made of elastomeric material with compressible gas cells and in which the sealing strip is normally in the plane of the separating surface of the element carrying the strip ; lies » _: - '" ■ -

Lin also? It is the aim of the invention to find a new and verbesüe-pfco 'j> iι ·· -1αηρ; made of expandable 'elastomeric' Hatsrial. with i-loosened cells for pressure connections to.; scüafj'en that are constructed and arranged is ,, that sic. ^ UiJ. Abdicatea .. to be pressurized can" . . .. "'. ■ ..-," .. .., - ... - ■■ .- .. '"

Yet

S0 9J2 & / 0M2

High, another object of the invention is to provide a novel and improved iterfänren for making egg-her To create sealing construction that together press ^ Bareg elastomeric material with closed cells and is so designed that it is used in the Yerwen ^ can be put under bridge *

Other objects, features and advantages of the present Invention emerge from the following description of preferred embodiments in connection with the Drawing * Show:

j? igj 1 a vertical line cut through an ab * · section of a magazine; zinc constriction of a core " blow molding machine and an associated element ^ of the use of dej? Srf -inäung explains, '.

i'igj .. 2 eiaen bewäßhtliöb. G

Iiawösentliciien in the0 # lt) en level like: ie Fig * I but only in the. Certificate of approval! and German

the froanf laugh and the separated i

IO11a § / U $ ii _BAD ORIGINAL

1125494

a cut ätinliö'la der! Hg, 2, der jedöcti the Irennflachen in a combined & lemmt era state and the obligation strip in his under Druel? shows standing bowed condition,

Fig. 4 a section atniliob. äem J ¹ Ia- * §, the jedocp. guin fgrgleieli shows how, the jJicatstrip

sia alane a§ opposite

@ in§n ieiin | tt, the. certain characteristics of the ¥ er-aüffi I§rgtelleR the Pigatuiig is inclined.

§In # n Saöilitt dyreb. A modified version

¹ ii * '- 7 tißsa $ © b .: iiit; f te ^ eö ^ ija ^ wide treatise ,,

$ ainea feilieijöitt itwa. ejaflaög ier i.ißie JX ^ -I

To the

Representation of an important industrial purpose of the seal'geraäss of the present invention is "shown in Fig. 1 a sand ceramic blowing machine construction, which consists of a magazine 10 with a sand container 11, in which a load of core sand and suitable binder is contained during operation, such as It is well known in casting technology, approximately on its lower left the magazine 10 has a lateral attachment flange 12 which creates a running surface 13 against which a location area 14 - the front face of a blow plate element 15 is secured by means of fastening means can be tightened under pressure, which consist of screws 17. In the assembly shown, the blower plate 15 serves as a bottom lock for the magazine Iu and carries a lower blower plate element 18, which is attached to it by one or more BlasbücliseLi 19, the corresponding distance s-ΐ lanec He \ sÖ zwi scb e a- den tlätt e aeiement en auf we isen ^ '■ - um; die.se .in A ^ standsbo ^ ieauar- zu hal ten, in order to produce oiuen X.ui: "uij.ustrittsaustaiid oder -spalt x'iir-with sieves; r provided Lnftdii'iiuvi ^ eh 21 in the uhte ^ rea 'il & tte 18". A.:, Ixr.ud α - ". ;; the lower ■ ülasplatteiielement · - 18-" -a lower ■ frevi-ifluehe ^ 2, which is designed so that s-ie'-from a jJre.fifl: - .e.: b 25 eiuer ^; daiidforo 24Ί such as B, - öi-ires> wa ^ -

s ^ inblastrociiners; üaä - 4%] i? * - ^ berluirt

BATH ORIGINAL

- 8 - ■: ■■■■■ - ■■ ■

Because the sand used for molding purposes is necessary is fine and the air pressure used in blowing the sand from the container 11 as a function of the practical requirements in, jode. ^ i special jj'all between .2 ^ 8- and 9.85 kg / cm "" and in particular If this can still exceed this consecration, it is blowing through through the trunks a danger to which one is exposed

^ Despite IRI ^r endwelcner deficiencies in the Treauflachen such. B.

small * Verziehunpen and the like, must pay attention. A kind of Seal or "DieLitmittel is" commonly used. In an effort to blow through not just from the den Container 11 forming cavity, but also from the äurcti a chamber 25 in the Jj'ormkastene'leiaent. 24 ■ to prevent cavity formed. Passed so far The etching en 'for this purpose from protruding ribs, Groins or "tongues, at least during" the Tronnuur the 'Treniiflächoii concerning the' franaflacne Qes

ψ_ the D.icntuag tj.-x oiiden element protruded, .uas. "iab

certain .ac..i "ucii_e, like it oo , n erwLLiit vmrde _t v / ie e.g. the '-i? reilie,; en ζ jlt ; eSchädigung, - the -drawing in Bozug on narrow aijst" .ride ■., Wena one of the separable ele ::. Ente relö / civ. in addition. anclere-a oev / egt- v / ird, and the i ^ iotv / encj inr.iGit a ent s'ore ca ends iSut in the pe ^ enüberiiegenaen u Ioυent for the tongue, rocker or bar,

we at

J.0Si8i | / Q842,

1S25494

when a © tongues "or liutendiehtung v@rvjei.id'©i5 uriti in de & Jformplatteneleaentj faönn a used"_Where's example anfisrfolgend at a Blasplai3t the 'gang, a fieiis & hl iron Mentistshen core box ö calls e VerWei the £ ung © & ~ mid Mütensrt d ©; r Biötituag ii that gedeje der E ^ röfcästen an auaggriförialge hat- ^ im grab into a suitable Sfiit in the Bla.splatt ©, or umgetenrt maes gtdea? The KernMstsn a © courage iaateen, di # mi £ the gungenftafiig-e sisn * tiag fits to Bla§plsiite * In the case of the BmeMiöniung brewery tiaa meat der J3rüfofe: rbinding _r dag fflit the Disätuti geadea. AeBoHt gmaasiMen is added, iceine

wear au, from © »a fföfflö. o.d © i * öegetiplattej di © di # has j mmeä lam öiössen des lienfDrstonenaen Ä to be sensitive to örgasenen *;

d-θΐ voriiegenäsn invention iöt a © Öioittüng

j dis.io & tisgeflinrt igt ^ da§g si # direkl i Hau iätellö in the fr © imfläöh @ eiaus dar iÄL ^ fflente 'Üraels ^ erbigung © itige-goasem were man, and äit ie completely within the Ebtn @ lies., so UBlBM she la BütteEöstand yorsprung forms »oil of Iferv / eödttng

lays

• s JLU «** -

& iMi -fits malfunction

ii
the

lot j MiM gin © dei * ö gsgsn © ine against ! 'ig * 1 ge26 igrfj

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Given that

isüLl äit Wt & ®äüh & ä I

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f liä ^ iä g

i © iotr iiöi b @ 4d # a fto ti © Xa öta figi 1 üti4- I igt € i ^ jJi

* Ba _i wii-d

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ifitt Itt äiiitffl

i.ü.i _f ta © ia @ iieftffHellt 29 ittf Msiitmng in ü

n »ti

Oa ¹ O 4i @ anger 26-

in i§i < © in

'- Ii -' ■■ _ .;

complementary, general i'-fÖrrni (yen Querscrmittj where: the base 30 has a considerably wider area has as the mouth of the mouth, _. . -

e. ^ icbn ^ te jirpeüTiisse. were created by üersteiieri aer Dicntu-ap 27 made of compressible elastomer with many padding skins, which has a hone üraä ". from i \ ac: iR'iebip: .ieit. While for this purpose '... M

ucnauraf-cuirüai verv; ends v / grounding, various types of synthetic resin materials can also be used. ,, the p-egoBseii and. curb elastic, yielding,.-.._. susaAi; .. egg pressure: Daren, zellig; en elastomer can be deformed. On the other hand, the i) ichtunp: skkörper.er Zweck-Ei.xssi; 3.1 ane: eklebt .. üewOn über die Grundfldc :: u yU which is I \ ut. the jichtunn body rniu. one at-. · Lie.-c.iueii lnnen- ocier Hückflache .verseilen 33, the free lic ·, t ü; id a-ii is ^ utcnc-round flat non befestirrt _o.

tuwüji uer 3us5a-i:.! endrückp.are body of Jichtunji; Zl ans: -L: -. R: -, ■> .lerisctie = i i-i material mii; closed cells. aivJ _. *. :: 2c- completely filled out, reveals the susam— ni3tiär.icM;.! 'ire-EiP -.- nsciiaft of the seal C i "3 vjer.eusatz su J3r l.-ai" borrowed forbidden area ^ i .. property of a solid

Elastomers

BADOPiIGlNAL

Elastomer, without cells) the effective introduction of a pressure medium between the groove base 30 and the opposite .Rear side 33 of the seal in order to put the seal under pressure for sealing purposes. Although the sealing strip can be arranged completely around a cavity area to be sealed, the introduction of the pressure medium can take place at a point along the rear side 33. As shown, a pressure medium passage 3 ^ opens into the base 30 and continuously with a channel 35 ^ ¹¹ connection, which is on the outer surface

of the associated element 18 or 12 opens and is arranged in such a way that it can be connected by means of a connection piece 37 can be connected to a line 38, which from a suitable pressure medium source 39 »such. B. a Compressor, a compressed air tank or the like. Comes, and is under the control of a valve 4-0, through the air, which serves as a pressure medium, is supplied, around the seal; pressurized and deflated to loosen or ineffect the diaphragm. Although the Drucks./stem in i'ig. 1 schematically as -independent from iriiencieinern compressed air s, yst em can be operated and: the Steuerereinricatung therefore, depending on the Core blow preps in connection with the magazine 10 is operable, it will be readily apparent that

one

a summarized, synchronized, timed, sequentially operated or otherwise ■ suitable cooperative relationship may be provided. For convenient operation, for example, 'a Pneumatic or electro-pneumatic arrangement can be provided in which the operator has a single Actuating device such. B, a switch, a valve lever or the like *, must operate to both ^ pressurizing the gasket or seals c! 7 as well as the core blowing process of the machine. "In any case it is advisable to use the seals 27 to be put under pressure before the working pressure on the Junction of the cavity assembly occurs, which has the pressurized seal.

As a series of compressible and elastic ones properties when introducing the pressure medium through the Passage 34 in. The area between the free base area 30 and the rear side 33 of the seal act back 33 and the body of the seal like a membrane, to open a pressure medium gap along the length of the sealing strip. This effect is so even scumeil along the length of the ripening that they Instantly for all practical purposes. :

if

90d82-6 / Ö6'42

BAD OBiQJNAL

- IA ~ ■■■ '■ .. ■.''- ^:

If sie, the seal back 33 bulges under -the applied pressure, a sealing pressure is created by. -The Seal 2 body? through against the sealing surface 29 generated, whereby this sealing against the opposite Junction or (focal surface 23 or 14 presses, as shown in "Fig. 3.. The The size of the sealing pressure can easily be calculated in advance or for special operating requirements the pressure factor or · the compressibility of the material of the seal 27 »the pressure exerted by the pressure medium and the area of the rear side of the seal relative to the sealing surface 29 are predetermined. It will also be clear that when the back of the seal 33 bulges from the base 30, the entire upper surface area of the surface 33 by stretching this one! "laugh rises continuously and thereby the The ratio of the pressure area of the rear side to the sealing surface is continuously increased for the sealing effect. These Effect is increased by the fact that the entire area of the sealing back 33> dsr exposed to the pressure medium is, is initially significantly larger than the area of the sealing surface 29, which is caused by the The reason of the groove enclosing the seal has a greater width than the outer end of the groove, which the

Üeiten

Sides of the seal limited and the width of the sealing surface 29 determined. ■

After the pressurized pressure medium has flowed off The seal 27 relaxes immediately, expands with a diaphragm pumping action to the pressure medium between ■ the seal back 33 and the base surface 30 to challenge, and the sealing surface 29 remains in the plane of the parting surface 22 when the opposite element 24 is released

Λο im for some reason, either unintentional or inadvertently, the pressure medium which is steady under pressure is not drained when the opposite element is separated relative to the seal or if the pressure medium is missing in the absence of a seal on the interface 22 adjacent trim area behind the seal ströiiieu kacm, enables the seal 27 own after- p; iebi: re elasticity that the dicub surface 29> as it is shown in i'it "-. 4 ~: e, as a result of Ji'etilen's a limitation nacii aussei fVewölot is, ucs nerausDlasen the seal w'ix ^ d "jeaocfl -prevented, since never whip-poetry ■ üeu - ^ e -: efiüü6rlie-enaeu Fl,.;. Cuea aer die -Jiclitung üerren- ^ ienaen i> ut'2t> are lived out. The fact is that the

Seal 9 09 826/0842 BADORlQlNAt

Seal 27, if desired, the entire pressurized Inevitably includes pressure medium without leakage losses, and membrane-like pressurization or expansion the seal, as shown in Fig. 4, can be used for Testing purposes are deliberately carried out.

Complete sticking of the sides of the sealing strip 2? ^ in the groove 28, in particular on the sealing surface 29, is advantageous where fine particles, e.g. B. sand in which pressure medium to be included in the hollow assembly, since the * adhesive connection requires incorporation, of particles of this material between the seal and the delimiting wall of the groove prevents.

Although it is generally desirable that the seal 27 is glued with its sides in the groove 28, this may not be necessary for some purposes, and that "undercut groove sections 5I and the lateral Flanges 32 of the seal therein then effect during a sealing process in an advantageous manner a seal against leakage of the pressure medium from the Back of the seal by an effect known as See "corking" or pressure-sealing interaction between the corresponding seals j> 2

and

• and-inwardly directed shoulders · 41 • which ^: face the ^: 3? 1 face opposite and ■ "'' _ against which -the Elans are pressed during the pressurization of the seal. Especially the curvature of the ' pressurized rear portion of the' seal against the sealing surface 29, the material of the seal and "in particular the" flanges 32 in the buttock cuts 31 "and in particular against the '^

Shoulder surfaces 4 ^ 1 and the pronounced angles 42 at the connection of the s-se hiüal en ¹ AIb cut it. The groove 28 is pressed with its wider section. '" ^: -' - ■

Although, if desired or expedient, the seal 2? manufactured as a pre-cast or pressed strip and then inserted into the gutter 28, which is suitably shaped in the element carrying the strip, there is an extremely secure process in the shaping of the seal 2? ' and- in place · ilin Such forms of the Dichtung''aii place in der'Mut. place can be carried out with the necessary modifications ¹ by known techniques, UHi the "desired ilr'gebiiisse to hold der'Dichtfläche '29' to ' eggs level "of the relevant separating surface 22" to egg 'aim' ^ wobei'die sides of ^'; sealing strip to the counter

309325 / QSU

overlyingö, n

BATH ORIGINAL

overlying-. J ¹ IaCtLeH.-the ¹ -limiting groove glued on- '-' s ind ,; and _: the ,. Riic-kse.it ■ & 3δ ^; the :. Seal, essentially 1 ic ti en ■ · 'completely unbound and -free ... from,: the opposite base 3: Q-the hat · is; Zn-for this purpose the; hat 28 is complete auf.irgendeine preferred way 'preformed w.ie. z _k B * through most precise positioning of the core in the cast piece, or by spanabta.ebende .:-i ^l anufacturing, ■ how-to "z, - ■' by B. suitable milling operations .. '.For - such spariäb- "' factual processing is a relatively sufficient raw processing, da. accuracy ^r of the surfaces in the groove and even with respect to the location of the groove opening not critical!. is. · - ■ '■ - ^; '

As a precursor in the iOrmverfahren-which are Mut "the Elächen treated eihschliesslich 31 and 41 with a suitable adhesive. Is on the bottom surface of the groove JO a suitable release agent aufgebracht. spell is unausgehär" 28 bildenden.seitlichen wall surfaces fetes ELA 'stomerisehes material M- (B'ig «5)», for example in the form of a conventional pressed band or a rod, inserted into the groove 28 in a predetermined amount per length of the groove. -A 'mold plate-P is then attached in a sealing-off relation to the' groove 28 '. This plate 'can' be a separate molding plate or the element

be,

be with; for example the parting surface 22 the use of the seal will form a junction. The assembly is then ready for endothermic iien or exothermic curing or even for Cold hardening, as it is expedient for the material M. can be in order to generate the inflating agent therein unrelated, preferably small closed, gas-filled bubbles in the press J shape of the cured elastomeric sealing body solve, ji's will be understandable that the opposite Area of the mold plate P with the release agent needs to be treated. As a result, after termination the curing, glue the gasket 27 on its sides to the sides of the groove 28, but from the Form plate P aa of the sealing surface and from the base 30 of the groove must be free.

Because the expansion of the material forming the diaphragm η during the hardening in the limited in the uut 28 As the chamber progresses, air will be released from the i.ut ejected forward and escapes through the connection .a parts between the l'renafläotie 22 and the mold plate P. Air that is otherwise in the base area of the I'-ut might be enclosed by the passage

90982670842 .. ^ _0RIGlNA J

TS25494

34 · drained. A. Escape of Bichtungsmaterials by the .Entlüftmigsdurohlass the zweckmHssigerweise a screw · a wan of Äussenseite of the seal carrying member accessible ¥ er-Mngeruügsböhrung 44- Ioclcer in is prevented by "closing means 43, from. ..Bestahen obtained by. The passage ^ screwed 34- ijät * Due to its high Tislcositrat is the ^ Bichtungsinaterial niehit by the loose thread entweich.eEt but _t can Euft leiehit under the ausgeüfeten by the expanding pressure Mchtungskörper escape »Hachd em the itusfOrmung the seal is Tollend et, the plug is 4-J removed, and a short stopper.4-5 is inserted into the extension hole 4-4- with a seal and leaves the passage 34- in free connection with the channel 35

If for any reason it is necessary to

normal suction or extremely high pressure ■■■ '· ■■■■ ·'. '■ ..

wear, which a flat contact of the sealing surface of the seal does not sufficiently block the passage through a connection point, at least within the for Available or possible pressure medium load or pressurization of the seal, it can be desired be, the interface opposite the seal,

with

90 9.8'2-6V 084 2- ^bath

to be provided with 'a groove', in which the gasket is hineinyerlägert sealingly ^v "when it 'is pressurized. In a zweökmässigen J? örm, as shown in -B'igv β is a groove, such . as a general, common it-shaped groove 47, the element is in the focal surface 23 \ 24'- "is provided and over which the seal delimiting groove 28'-, but has a lower Breiteι as" the groove 28S thus, when "the elements 18 ^l J

and * are assembled 24 ■, so that the separation surfaces 22'- and 23'- steaen in contact with each other, the "groove is located in a layer 47 to the sealing surface 29 'of the Dichtüngsatreifens 27 ^ς take. Therefore, when the sealing strip is placed under pressure via the passage 34 ^ in order ^{to arch the pressure-absorbing surface 23 l of} the seal from the rib-shaped base 3ö like a membrane, the sealing body 27 '* is displaced in addition to the pressurization in the section opposite the groove 47 in order to protruding into the groove in a sealing manner. As a result, the sealing surface 29 ^{1 forms} a sealing abutment with a significantly enlarged area of the element. 24 ^u her, and the- j section, of the seal, which goes into "the groove". 47 protrudes j. J forms a web over the joint area * This is a particularly useful arrangement if

~ ■■ ^; ■ ORIGINAL BATHROOM

the surface junction a little ' Gap has or is corrugated or "from 'another No reason for a metal coating is feasible.

change arrangement that actually '"forms" a tongue and groove seal in Druckzuständ the screening is shown in JJ ¹ Ig * 7 "In this' arrangement, the seal 2 fills?""normally ^lt an NUET 28, which generally includes a dovetail-shaped cross-section has, the side walls of the groove including the sections J1 "'at' the widest base cut essentially a straight, although not necessarily a straight line shape from the outside to the inside of the hand to open the wider flange sections 32" of the liicntuhgsltorpeis . In the normal uncoupled state of the seal. -27 "'your surface area" 33 " lies on the base surface 30" er _$ "as shown in the interbl'öfeener line $ and the sealing surface or surface 29" lies within the plane of the eft M '% "'■" ^ "'

If it is w / unsöht, the Ü ^ Eennflache 23 "des." associated -Elemehtes 14 "'of the assembly with a lot

number

number of grooves -4-8, which - are in the Same direction and opposite in alignment Relationship with the opening of the seal at 28 "extend. When the pressure medium through the passage 34 "inserted against the back 33" of the seal is to press the seal outwards, the back side 33 "" arches from the base 30 "continues, and the sealing surface 29" of the seal is pressed into the grooves 4-8 in a complementary relationship and forms a transverse row of pressure-resistant tongues along the Junction between the parting surfaces 22 "and 23 ".

The embodiments of ^{FIGS. 1 "1} Xg. 6 and 7 achieve all the advantages of the completely retracted sealing construction, even if the corresponding seals 2?." or 27 "have practically no gas bubbles or cells but consist of elastomeric material with a low durometer hardness. Since the sealing surface section of the sealing strip is displaced into the corresponding ragges aligned with it in the opposite separating surface, there is a sufficient membrane-like displacement of the body of the seal under pressure to a sufficient pressure receiving chamber area between

the

90982B / 0642

the base of anger and the opposite. to form the end of the sealing strip. On the other hand, as a result of its inherent flexibility and elasticity, the sealing material springs back into the normal position, which fills the anger and does not form a protrusion to the outside, when the onerous pressure is released ₀

^ A major benefit is achieved through the application of the present invention achieved in the construction of cavity assemblies such. B. with core box that loose parts, require the necessary, for example Recesses in the surfaces of the blown cores form and those from the core box with the molded Sand core must be pulled out before the parts . can be removed from the core «In the core box arrangement such loose parts are expediently sealed to prevent sand between the

P parts and the assembled container is blown, about getting stuck and damaging the core while taking out the core from the core box to avoid. Seals with protruding tongues, Ridges or ribs are when they are supposed to be tight, a substantial improvement over ungrounded loose parts, but the problem still persists

the

30982S / QS42

1525Α84 -, y ■ «- ■ -

Projection /, of the adjoining, the & grooves and the like, - The present li fi3 alle? Ort @ ile. "ä.esi? lMicUtung dei ^v Φ © 11 e against

in dl © Ie ^ in4u "ägast © llan oftne. irgen & we.lolae

rL bleeding, since the bioh-

m the desipre.Qtienden ¥ e ^ in-

dung flaol and thus the loose ^f l ^v eile iusaiiimen ™ joined and, .sä 'Äei ^^ keraiisgeziagen feannan, as if "'" no li

q! ig * '8 igt ζχίτ banste ling a ■ l

d; i§ consists of a% ia layers iffeil 49, tlgreabeMes recess 30 to- etoeiii Kex ^ sharesS ^ li'ti a Keaaufiiahmefionlrauin; 52 d ^ in d% in a the core

Ooig@i-te.il 51 work et a '$ T% m £ \ & ßM% together ^ the iiiit a _: eB

^ ti © the _; ^ o ^ l

© Αξι © a ^ gtiieiitete: fti ^ binding ^ st ^ lle: with: & ± vyä3>

^ - des,

ÜMf © inen Bt ^ den: Gsujadl

lM

BATH ORIGINAL

nut; goes through and via a channel 60 with a suitable pressure medium source is in connection which it is connected, for example, by means of an elastic hose 61.

In the relationship of the box elements 51 and 54 and the loose part 49 assembled together with the core ^{bubbles, the upper surface of the loose 1} ileie lies flush with the interface, $ 8 » ^u n & if the sealing strip 5? When pressurized, it forms a seal against the opposite interface of the loose part as well as against the interface

Ium deducts, en. the junction or the Tremtfli.chenber @ i0h @ awisohen ä®t & loose Bimsatziteil 49 and the »ctl @ Ä ^ ss ^^ uag- Sö-biMeMen opposite

is a uiafet; iangss; treif: en: 62 iia KerÄastenunt 51 »vorgöse'teeai» deir- au this purpose with a g © -

g 9) versetea is

dii @ Bieb-tiaoag 5? ^ * ^ i® Blefetaug 62 the Sigeiis di @ l ^ BLtefeioE di @ x Mektiang 2? iarai isife swecfe.—

with;. ges © W.osaeiae lit iteeja liahe ^ uisjtaniä !, lies diie

of the seal 62 within the planes of the respective surfaces on the n opposing surfaces of the insert 4-9. attack and are directed into the core box cavity 52. The sealing pressurization of the. Seal 62 is effected in the same manner as in the seal 27, namely, by introducing pressure fluid, such as, for example, compressed air, behind the free, opposite the groove bottom surface of the seal, for example d by a passage 64 corresponding to a pressure medium source communicates via a line, such as ■ ζ-. B. an elastic hose line 65 ··

On the inserted seal 62 are opposite one another Ends 6? provided with the sealing surface the seal 57 in the assembly can be brought into sealing contact. A passage of pressure medium from the rear of the seal 62 past the ends 67 is prevented by an end wall 68 which has part - " the i-reni surface 58 and partly the opposite one The ends of the pressure groove 63 are closed. At its ends is the 'the at strip- 62 on the inside and Endfldcae, i glued to the wall 68, and the sealing ... · - .. ". ^ Näabscani-cte 67 of the Dicatung gain in alignment Bs ^ i3hung to ireiraflache 58 in an unpressurized idle state

9β25 / Οΐ 4 2 BAD ORIGINAL

condition of seal 62. When assembly is complete is, wherein the Treniiflächeii 55 and 58 abut one another and seal 57 extends along the top of insert 49 and seal ends 67 extends, when the seal 62 is pressurized, it is not only against the opposing surfaces of the insert 49 pressed but also the sealing

tk end 67 against the opposite portion of seal 571 as indicated by directional ^{arrows in Ji 1} Xg. 9, and the seal 57 in turn presses against the seal ends 67 under pressure, thereby forming a careful seal against the escape of air from the cavity 52 on the insert 49 leached. When the seal 62 is relaxed, the insert 49 can be inserted and removed from the recess 50 as if there were no seal. The explanation of the JTig. B can also be used as an example

~ to be considered as the one under pressure Poetry not only nrmäos of the present invention for simple linear separators Iac hen soncxom for actually any dividing line that may occur is applicable including overridden l'renrii'lccben and paragraphs, where iffimer they occur in a hollow assembly and

wxe

90982S / 0842

as they often occur, for example, with core box and other Äandform constructions. The complete freedom from the spring protrusion of the seal beyond the surface in which it is contained enables complete freedom of movement during assembly and when running through sliding movements of the abutting parting surfaces of the assembly. When the gasket _(jodoch is pressurized ,, a- carefully sealed joint is obtained.

Sponsorship claims

BATH ORIGINAL

909825/0042

Claims (1)

P a "b. E η t an s ρ r; ü ch e 1. Pressure connection between a pair of each other separable, essentially rigid elements opposing interfaces. the one separable Form a connection point around a cavity, which largely resists a pressure difference. r is to be sealed, with an element in its irennf lache has an elongated: recess that faces the opposite separating surface opens, characterized in that the recess is one of the. Recess opening directly opposite Green area has that a strip hurry made of elastomeric material that fills uffmmg and an outer visible surface within the plane the! 'running surface of one element has that the strip with its sides on the saving limiting sides is retained, and the base is free-,, and that means are provided for introducing a pressure medium between the strip and the base and in which exhibit a pressure medium channel an element x ⁴ x, of a binding with a pressure medium source bar 90 982S / 0S4 is cash, whereby after introduction; of pressure means between the strip and the base of the Strips under pressure sealingly pressed against and in abutment on the burning surface of the other of the elements will »- ■ 2. -Pressure connection 'according to claim 1, characterized in that the strip of elastomeric g | Material essentially separate independently acting small, generally vesicular gas cells with elastic connecting walls made of elastomeriscaera i-iaterial, which makes the material compressible and is elastic, so that when the pressure medium is between the strip and the base α it. · Strip is introduced, the strip itself from the Gruiidfläcae bulges and one continuous increasing 'el jerk-dependent η surface area ■ uilaet ;. "Λ 3. üi'UckvürDinduiiiX nacti claims 1, because : ^ ic niiet ,. that the other of the elements eiue eir.e x) ic:; tu, i, aafnahmende liut in its Trenuflache and ; o .enÜLvr of the sealing surface of the strip, so that when the strip is put mrier pressure. the 90 982 $ / 0 84 2 BAD ORIGINAL the sealing surface moves into the groove and a pressure-locking tongue over the connection point forms, 4. Pressure connection according to claim 3, characterized marked-_ draws that the elastomeric material of the Strip made of a solid elastomer of low durometer hardness and considerable elasticity ordered so that the strip is dependent shifts slightly elastically by the applied pressure and snaps back into its rest position, wherein the sealing surface lies within the plane of the interface of one element when the Pressure is released, 5. Pressure connection according to claim 1, characterized in that that the sides of the recess near the base are further apart are called the recess opening and that the strip Has flange sections that cut into the essentially rear-end areas of the recess intervene, which is formed by the broader propriety; be det. O. 90 9825/084 2 ^ ⁰ 6 .. pressure connection according to claim 5? characterized by that the broader intermediate space is provided by sneakers arranged at a distance from the base is limited, the one projecting Viinkel connection with the narrower portion of the recess facing the recess opening leads. . 7 · pressure connection according to claim 5 ,. characterized, that the cross-section of the recess: is dovetail-shaped » 8. Drue lever binding according to claim 1, characterized in that the recess in their ooitenwdnderi Has longitudinal undercuts and that the strip has flanges glued into the Liinterscnneidüngen having. 9., .Druckverbindting according to claim 1, characterized gekennzoichnet, that the recess in the racing surface ■ - *. des eicien Klomentes is a courage and that the side L,: jii of the waterproofing strip to those who develop courage anp; u are alive .. 10. 90982S / 0842 1.0. Pressure connection according to claim 9 »characterized , that the. the courage-building sides ; . and the sealing strip interlocking Have tongue and hat means. 11, printing compound according to claim 9, characterized · overall 'indicates that the hat forming ^sides: m have tenflachen schulterfürmige means, which work together with the pressurized weatherstrip to keep the pressurized standing state of the sealing strip Relocation of the JJeitenabschnitte .. of the maturation out of the courage to prevent «. - -12. Pressure connection according to claim 1 or 9, characterized marked that the strip she ti membrane—. - ■ 'well-behaved towards the surface of the G and away from it % ■■ '■■■ "■■■■■. ■■ emotional* - . ■.-.-. 15, bridge connection according to claim 9, characterized in p: e- indicates. that the hat with the sealing strip in one of the two -. '!' rerinflachen between an element, that has a cavity and one in the '.' "■ - ■ '■. -. Cavity 5 / U842 . -35 - Has a cavity-opening recess intended to receive an insert element, and is arranged on an insert element which fits freely into the recess. '- Pressure connection according to claim 13, characterized in that the one provided with the cavity Element has a separating surface that looks like this - || is performed so that it can accommodate a supplementary element that closes the cavity, that the recess is also through the separating surface of the element provided with the cavity extends therethrough that the insert element is provided with the separating surface of the cavity Element has aligned interface and that the jn ut and die nt strip ends in the ibene the dividing surface of the provided with the cavity a Element and with the aligned interface have, whereby when the sealing strip is pressurized, its ends resen the er-.Kdilso Press the element. 15.- BAD ORiGJNAt, 90982S / 0842 15. Pressure connection after. Claim 14, characterized in that that; the ends of the groove closure portions of the; an element over a considerable amount Area near the base and touched by the ends of the sealing strip in order to prevent pressure medium from flowing out of the ends of the groove. 16ν pressure connection according to claim 14 or 15 »thereby marked, dasa the one filling the groove Strips of elastomeric material create a sealing ■ fläotie which usually laugh with the separators just close the recess so that: its ends with the interface of one element: just absohliesseii and 'dlös. the other of the elements in. its interface has an alignment groove which is marked with ' the ends of the gymnastics in the 'lusaparung . and the seal öt ripe 0n @: in-flushes and over the insert element runs away and in the © in ■ -> Remove strips by removing the separating surfaces § the ends of the the sealing pressure 17th 82S / JÖS4 , - 37 - ■ "■ '■ 17. A method of sealing a pressure connection between a pair of separable, essentially rigid elements with opposing parting surfaces, one against form a pressure difference substantially sealed connection point, characterized through the following process steps: Forming a groove in one of the Irennflachen for receiving a gasket, treating the side wall surfaces of the groove with an adhesive, treating the base of the groove with a separating agent, forming a blow-out channel from the separating surface from., Verse enclose this channel with an element that allows air to be blown off but prevents highly viscous material from flowing through, inserting raw elastomeric material Material with a blowing agent in the groove, "" ■■■■■ Closing the groove with a mold plate, the one opposite the groove. Area with a Release agent is treated, curing the material in the locked groove to expand it and To fill in the hat, expelling the air between the expanding material and the base while ^ _ . BAD ORiGINAL 909825/0842 during hardening by the closure element, Removal of the closure element after it has completely hardened and opened of the channel for connection to a pressure medium source. 18. The method according to claim 17, characterized by providing the channel with a thread and delicious screwing in of the closure element into the channel, whereby the air during the curing of the elastomeric material escapes through the thread-fermented " 009825/0842 Blank page