DE2235657A1 - SHAPED, FLEXIBLE, MULTI-LAYER HOSE, AND METHOD OF MANUFACTURING THESE - Google Patents

Description

PATENT LAWYERS .. · .- ""

t, - DISie, H .. FINOKE.
Df PL, -INGF, H. BOHR - 'MülferstraflsST.

- (NGv S, STAEaiER '■ iZijDO /

fern-fifi> 2tf «0i0i: ■ ^; "'V'. ■

9208 gases 7124

INDUSTRY

Shaped j biegsaaerj, .- M @ hff3chich tiger hose

Manufacture

s "2t ₆ July 19tt - itaiieii

The present is £ 1m & tmg " Bleh refers to a terfaliren sur making iron swept, Mö ^ öamea

a reinforcement are vu && äie-- tjesönöers are suitable. as Terbin ^^ gselenieiit ^ £ Vb? the ^ cooler ^ from Eraft * faiirseugen. Furthermore, "the ifeflnä & g aaf produced by this method

It is "bekanitt _r that such an object ₉ is suitable from a elastonieren material having a? Erstärkuagseinla ^ e ^, ύ · η versoiiiederien iae (Iranian Beansgruchungeä which consists he Ibei use is subjected * resists * selbet from einemrschlauch- or tubular elements _s that already ^ during manufacture

with a corresponding Krüiimrang is shaped so that it is light can be attached to the nozzle, reducing the mass of the object itself and the hose when attaching does not need to be deformed.

The curvature of this sole can be more or less awkward be what each of the spatial arrangement of the axes of the two nozzles in which the hose is attached should and this curvature is created by the fact that the tubular element on a mandrel with a corresponding curvature is applied and vulcanized on "

In order to enable the hose to be attached to the dome, a reinforcement insert is preferably used, which consists of consists of a fiber network or fiber braid made of textile material, as this makes it possible to arrange the fibers differently according to the curvature of the dome.

In practice, such hoses are manufactured in such a way that that in two separate operations two concentric tubular layers made of a vulcanizable elastomer Composition of matter can be produced in unlimited length, wherein between the first and the second extrusion phase the Fiber braid is applied by means of a braiding machine, so that the braid between the two tubular layers too * This loop element is then cut into individual pieces © cut, the length of which is adapted to the respective purpose and this piece is applied to a Pormdorn on to which he is subjected to a heat vulcanization treatment and gut, Will get removed.

Such hoses generally have an internal Durohmesser of not more than 50 mm, the thickness of the hose wall is generally not greater than 5 mm.

209885/0991

Bas ffc2? Btärlrangsge.f! Echt is beneficial in the production of the sidestream. jjedooh iat ee don't worry; satisfactory because it's not that. Corresponds to the requirements that are placed on such an object during use . * is eineiü aolchen push au resist ^ eo that the Sohlaueh also be leicat in radial '"Eiphtiang aüsdehxit tiaä in the axial direction not yield lesfasi * There is therefore a risk that the hose you the socket _f · where it aiigebraeh% is, slips or ^! from. ""■; άβη llerameXementen is no longer recorded _a : / ^ '- ■■ -. '. . :

2weclc of the "invention is now a shaped, flexible hose:

n, which is particularly suitable as a connecting element for the Etihler JjcaftfahrzeugiQotoren and des? a Terstärkungs = _v · insert has _s \ ielche .-- einfltal ieicht wrerdenkanii mounted and, on the other hand the stress on the 'tube at (lebrauch resists V ν -;. - / - I-'..-..' ^:: :: - ;; ::::. '■., ".' ■ - '■."".-ί:" ■ ■ -; y ^: - "; ■ -'-""■" ■ ";

According to the invention, a method for the production of iron-shaped flexible hoses is proposed which have a reinforcing kunga insert and which are particularly suitable for use as Terbindungsieleraente for radiators of motor vehicle engines and where the following ^ steps are used? Extrusion of a vulcanizable elastomeric material composition in the form of a tube with an inner length of nichii more than i-3'0 mm and a thickness between 1 and 4 _; inm in unlimited length j applying a · ?; Reinforcement made of textile material on this hose. Extrusion of a further hanger of a vulcanizable elastomeric material in hose form with a thickness of 4 and 1 mm and unlimited lengths on the; "."; ^ Absehnei the individual pieces of the required Iiänge of this multi ** söhichtenmateriäl% ^application; the pieces on a Pprmdorn whose ■ ;. "Verstärkungsmat'erial so that this mass to be liable

209885 / QÖ9t

Axis has one or more curvatures $ vulcanizing the Clever cuts on the mandrel, whereupon the fully vulcanized molded hoses are pulled off the mandrel.

The novelty of the invention is that the reinforcement! position is made in such a way that at least one component of textile material on the first extruded tube helically is wound up at an angle not less than 60 ° with respect to the axis of the tube, the distance between two adjacent turns is not greater than 10 mm. .

The invention also relates to a flexible one with a reinforcement kung liner provided with the specified Process has been established.

It has been found that when the reinforcing insert of the hose by helically winding a Textilmaterial® takes place at a very specific angle, in this case the textile material easily follows the shape of the mandrel adapts to the application of the hose and follows the curve of the curve without affecting the layers of the elastomeric material be damaged, the hose continues to be solidified in the radial direction in order to counteract the deformation forces in this way to be able to counteract effectively in this direction ^ the on occur when the pressure of the liquid flowing in the hose grows larger during use.

Another major advantage of being applied in this catfish The reinforcement insert means that the hose can be manufactured continuously. .

When using braiding machines that were previously used to manufacture the reinforcement insert of hoses could be used

209885/0991

can only be processed at a speed which is slower than the extrusion speed of the two extruders, so that work usually has to be carried out discontinuously. In contrast, a winding machine can be set up in a simple manner in such a way that it operates at a speed that is the same as that of the extruder, so that in this way the manufacture of such hoses is considerably simplified.

According to a further embodiment of the invention, the reinforcing insert of the hose can be produced in such a way that single or multiple single components of the textile material on the first; extruded tube is applied in a single direction at an angle between 70 and 88 ° with Reference to the axis of the pipe,

It has been found that if the winding angle is observed with the, specified heigungsbereieh a produced in this way The hose corresponds exactly to the stresses in the radial direction, which are caused by the liquid pressure. without undesired twisting of the hose itself. The winding of the textile material under such In addition, the angle results in a sufficient deformation possibility, to dön hose on the corresponding, curved shape · » to be able to push on the thorn. .

According to a further feature of the invention, the reinforcement * insert of the hose can be made in such a way that two components of the textile material are wrinkled on the hose that was first pressed out in opposite directions, at an angle equal to and symmetrical with respect to the axis of the pipe and the awisehen gO and 86 ° . ■■ ';■■'.-; . , .. " ^: .; .. - ^; ". "; ^: - .V ^; ^J.

2 09885/0991

In this case, it was found that "with such a selection the winding angle is possible, the greatest possible deformation the reinforcement insert after applying the hose to the mandrel and the greatest resistance to it Stresses in the radial direction to which the hose is exposed during use *

The textile material used to make the reinforcement · «· The layer used in the hose according to the invention can be of an inorganic nature * In particular, it is preferred to use fibers or use cords made of regenerated cellulose, better than those made of polyamide, because the former is the material experiences less shrinkage during the vulcanization treatment and the reinforcement material between the two layers of the elastomeric material is better anchored and there is no detachment »

However, the textile material can also be of an inorganic nature and consist in particular of fibers or cords from & las.

In the following example, the method is explained in more detail and also reveals the advantages that are brought about by the arrangement the reinforcement insert according to the invention can be achieved.

Beiapiel

Its vulcanizable elastomeric composition of matter is described in Extruded the shape of a tube with a thickness of 3 mm and an inner diameter of 30 mm »onto this tube then fibers made of regenerated cellulose with a denier » Value of 1650 wound in a double winding with a pitch of 8 mm and an inclination of 85 ° with reference on the axis of the tube · On this! extile winding is then another layer of the vulcanizable elastomeric material in

209885/0991

Extruded form of a hose with a thickness of 2 mm. Dag The tubular multilayer material obtained will be dsasn; cut into individual pieces of about 35 cats and each piece is pushed onto a curved Pormdörn and on top of it a heat vulcanization

When the V'uikanization treatment is finished, the «* · / formed hoses pulled from the thorns, ^ ^

Further shaped tubes were produced in the manner indicated, by applying a thread of regenerated cellulose with a denier of 1650 in a single thread, namely with a pitch of 4 mm and a thread; Inclination of- 87 ° _β with respect to the axis of the tube expanded tubes were "* hergesstellt ter Oeiluiose with a BeniessWert of 16 $ Q 'by winding a thread of regeneriei? Wherein two oppositely extending coils were attached at a pitch of 8 mm ^^ and ^^ an inclination ^^ of 85 ° with respect to the axis of the tube _e . ^

The tubes thus prepared were first Sntersucbungen with respect to the diametrically directed I ^ ansionswideaistand compared with änderen hoses unterworf ^ n ₈ which were prepared in the usual manner and the one Gefleehtvers.tär · "effect of filaments of regenerated cellulose had each thread also Q $ .nen denier of 1650 had "■

When the investigation was carried out, each hose was attached to eJLneni Plug one end and plug it into the other end a water pump connected through the inside of the Sohlaueheß a water pressure of 2 at could be produced what a Internal pressure in the hose of 2 kg / cm corresponds to the diametrical expansion obtained was then measured according to of the invention / tubing had a medium

20988570991

Auedehnung of 1 and 2 $ with respect to the original diameter while were found in the middle VergleichBBohläuohen time dia "metrale expansion 0wischen 6 and 8 i> with respect to its original diameter ·

In addition, the hoses were subjected to a high pressure resistance and compared with the hoses cut in the usual manner.

It was found that Bowohl tie hoses according to the Invention as well as the well-known hoses in test pressure from f at resist.

It is therefore to be noted that by the special attachment of the reinforcing insert according to the invention, hoses can be produced which pressures which are aimed at Expanding the hose in the diametrical direction is very effective resist »^ VV-W ·:

This has is naturally also reduces with the result that to alter the tendency of the hose oneself in achialer direction to a minimum, so that f "ste connection of the hose with the Aneatastutzen when -Be operating siehergestellt is *

Bs is added by the new reinforcement insert of the Resistance to breakage of the hose is not changed,

On the attached drawing there are two floodplain guides · foratti by flexible hoses according to the invention echematiech dtvgätttllt namely »own:

Pig * 1 a mehrechfcigen hose with a atörkungeeinlage and

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Pig. 2 a hose with a double textile reinforcement

As can be seen from the drawings, the multilayer flexible hose consists of an inner tube a made of an elastomeric vulcanizable material which can be produced in unlimited length. On this inner tube a text is b attached 11-reinforcing insert and that by winding a thread or -Garne.s of textile material or glass fibers, wherein the schraubenlinienförinige winding this TsiXtil-Vei '- takes place strengthening insert at an angle of not less than 60 ° , ■ _.'.- ■. ■■■■ '._ ■. ■■■■■■ "-'. ■ ':.'. ■ .; -: _ -.

In the embodiment according to FIG. 2 this is also shown. wrapped textile layer b through another textile layer Winding up in the most opposite winding direction like the first layer applied, namely this * Wiokelwinkel sswischen 60 and

On this textile insert b or "b ^v " a further outer layer c of © inesi vulcanisable elaetomeric material is optionally applied by extrusion "

Claimsί _/

98ÖS / 09 94

Claims (1)

Claims Iy process for the production of shaped flexible hoses, which are provided with a reinforcement insert and which are suitable as connecting elements for radiators of motor vehicle engines are by applying a reinforcing insert made of textile material to an extruded inner tube made of vulcanized elastomeric material and extruding another tube made of vulcanizable material onto this, then cutting this multi-layer tube into the desired catches and placing it on an in Desired shape curved form dome applied and one on it Is subjected to heat vulcanization treatment, characterized in that the reinforcing insert by winding at least a component of a textile material »on the first extruded Hose takes place at an angle of not less than 60 ° with respect to the hose axis, the distance between two consecutive turns is not greater than 10 now. 2. The method according to Anapnueh I _9, characterized in that one or more components of a textile material are wound onto the first extruded tube in a single direction at an angle between 70 ° and 88 ° with respect to the tube axis. 3 * Method according to claim 1, characterized in that the Winding up one or more times with two components of the textile material on the first extruded tube in opposite directions, namely at an angle between 60 ° and 86 ° symmetrically with respect to the axis of the hose. 4. The method according to claim 1 to 3 »characterized daft the textile material of the reinforcement insert consists of fibers or cords made of regenerated cellulose. 209885 / Ö991 5 "Method according to claims 1 to 3 _S thereby gekennaeiob.net \ dtß dao textile material of the reinforcement insert made of fibers or Sennüron aue oils? consists. ^v . 6. Window, flexible, multilayer hose ait one Textile reinforcement insert, consisting of an inner tube made from vulcanized elastomeric material Förraig wrapped reinforcement insert made of textile material © the ^c £ las and a sweeter hose aue vulcanisierberem Material. . T- '. ; ■ - - '-. ■ - ■ ■■■ - .. - ■ -. ■ '. ■; ■■ '"■■ -.--./ ■' ■ 7 · Hose according to itasprueh 6 * characterized by the fact that the wound reinforcement insert is attached in one or more layers, with the second winding mechanism being wound in the opposite direction to the first .. ; ', ■ - "■''-'"': -: y- ■ - '] ^; : _; ".- ■"": , "$ Is because the iron first- Textilöohicht at an angle not smaller wound al," 60 ° \ '..: ^-; - _;;: _ ^;;, "8 hose naehrdeii Ansprüohen 6 and I ₉ gekenniseichnet characterized. _: ■■■ ;. ^:: ; ^{:: i} ■ "-" ■. 9. Hose according to claims 6 and 7> characterized by the fact that the wide layer of textiles is at an angle of 60 ° and is wound at 86 °. fÄiJäiTÄH $ wt. · OIPLHMG. a.STÄB3EB 209885/0991 Al Blank page