DE1939969A1 - Device for separating and returning the overflow in the production of rubberized fabric sheets - Google Patents

Description

- Dr-ing, from Kreisler Dr.-Irtg. SchSnwald. ^l

Dr.-lngJh.Meyer Dr.Fues Dipl.-Ghem.AtekvonKreisler

DilCb «OT, Carola Keller Df.-Ing. Klöpsch K <!> I η ι .Ptlohmannhäu ·

1969

, V ₁ , S OhV Is

UNIROYAL .EKGLEBERT- Deutsdland 'AG, - Aachen,

Device for separating and returning the overflow in the production of 'rubberized fabric sheets ,,', "---":

The finding of food: refers to: to a device sum; Separation and return of the zv / iscnen / calender rolls of gumming calenders on the side of a gummed fabric layer in the resulting rubber layer, the so-called overflow. ^; ' ^v ' ■■■. ■■; - "■■" ■ - '. _T / ^: \ - / .--

Lvif tr-eifen_ of vehicles Vieisen, known as reinforcements a number of layers of Cordgev / ebe- on. Before the cord fabric is used to build the green tire after impregnation, it is usually double-sided. Coating with a rubber compound as part of a completed processing

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stage on a specially set up machine; : the so-called fabric gumming calender «There the fabric sheet is rolled out together with a rolled-out rubber layer. which is referred to as a plate, sent through a ninth gap, so that all the spaces between the cords are filled by the rubber material and the cords on the coating side are still covered in any desired thickness; the rubber mixture under increased pressure on the fabric web runs up, - ^:

Under the pressure effect, the unvulcanized, plastic rubber material has the natural tendency to flow laterally out of the roller gap _o This creates a thin rubber edge strip of irregular width, which is a hindrance during the later processing of the rubberized fabric finish the last lateral cord »The protruding rubber layer of the so-called overflow is expediently removed immediately during calendering, as this gives the opportunity to _: the overflow into an upstream roller gap, which is used to pull out the plate., to be able to re-feed returning prepares the overflow nor difficulty s _s _ because it is thin to a right ■ and soft foil., which is difficult to handle. ; . , '

Attempts have been made to cut off the overflow immediately after the exit with knife-like tools and reel it up and feed it back in from time to time = As the width of the fabric web fluctuates, this results in

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the. Risk of edge damage _a In addition, the removal and reeling of the film creates special circumstances because of the changing speeds of the fabric web, because the angular speed of the reel also has to be adapted to the differences and the "separated rubber layer has only poor stability."

In another known method for bilateral Coating a cord fabric web gives the laterally protruding strips about half the width of the Cord fabric panel corresponding, width, ends on both Knurling of the plates of the protruding web The rubber mixture is removed from the ground and placed in the area of the Cord fabric web to be covered is brought together again, this merged web forming one of the rubber mixture plate running towards the orphan gap has such procedure; a relatively broad one Calender result ■ ", In addition, this procedure can only be applied, "-. when the corduroy web successively is coated on both "sides"

One has already proceeded in such a way that the overflow on one of the calender rolls is allowed to circulate with ", where ^{1 is used} shortly before the feeding gap for the rubber mixture. the protruding strips adhere to the roller and also separate easily and cleanly ¹ from the edges of the fabric web, which is continuously pulled off the roller gap in a straight line

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becomes j where the laterally outer cords are the separating:. perform the function opposite the protruding strip "» ". The scrapers must "because of the small thickness of the Rahdfolie lie relatively close to the V. 'salts. On the one hand, there is a risk that the highly sensitive roller surface will be damaged * even if the scrapers are made of a softer material Reconditioned wear and tear and renewed at intervals of time « be., Furthermore, the infeed of the scraper can not be so be made completely, so that there are not yet considerable rubber particles under these to the outside slip away. Which can easily lead to undesirable contamination on the bearing share of the rollers and thus requires increased maintenance " In addition, the return of the material into the feeding gap is not sufficient * It can lead to an unintentional frequent mixing of the rubber mixture applied to the fabric edge, which results in an unfavorable thermal stress on the rubber compound can result »

The object of the invention is the manufacture of rubberized Gev; ebbahnen the side overflows by means of calenders to be traced back to a simple, self-respecting and gentle way, The invention is characterized in that Rolling bodies resting on the surface of a roller are arranged, one of which is directed towards the roller ends Perform rotary movement "

In this way, the adhesive on the roll surface and protruding rubber layer easily and completely detached from the surface and on the other hand, at the same time The center of the roller is guided <> A scraping process on the roller

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surface is avoided. The supernatant Crummisehicht --SiCH can easily absorb und.in a way roll up = result of the rotation of the supported roller bodies is ensured. That the entire projecting edge is detected _o An unintentional slipping-through of rubber particles to the outside of the bearing points. . Rolling is definitely switched off. Even very thin rubber foils adhering to the rolling surface are fully covered, with the entire process of picking up the material from the roll surface and pushing it towards the center of the roll in a gentle manner

The rolling elements have expediently - viewed in the longitudinal direction one spherically shaped surface "and consist of a non-metal preferably made of wood the surface of the rolling elements, the detachment of the rubber mixture adhering to the roller surface becomes essential facilitated »The use of wood for the rolling elements guarantees that the roll surface will not be damaged can be.

The structural arrangement of the rolling elements can be done in such a way that they are freely floating on a guide _o Thus, the rolling elements only rest on the roller surface with little pressure. Rolling elements * drive shaft and gear motor can be combined to form a swiveling structural unit that can be displaced parallel to guides attached to the roller axis. ' In this way you can the rolling elements by the;

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Width of the protruding strip, its thickness and its Consistency resulting from various conditions easily adjust.

The invention is illustrated by means of one in the drawing AusfUhrungsbeispieles explained below

The single figure shows a view of a Mehrwalzenge rlist with the inventive device. Device for loosening the overflow it in the manufacture of a rubberized; _{Fabric web 0} ■ :, ■ -; "" - ■ - '. ".'-" ■ "" -.- .. = ■ ^; ; / .. ■ "'

In the roll stand 1, three relatively cylindrical vials 2, 5 and 4 are mounted laterally _Λ The 'roll gap iz formed by the rolls 3 and 4, the ver. Is shown enlarged ^ is used to apply the oiling to a web of cord 13 consisting of cords * ■■! The nip formed by the rollers 2 and 5 ' _s '-.;:'■; Is \ recycled into which the check of the rubberized ■ fabric web resulting overflow material ^ is used for pulling out "of the plate- On the surface of Walze3 are in the loading, reaching those due projecting strip rolling body 11, 11 ^f, which is a to the roll ends Execute directed rotary movement »These roller bodies ^ which are advantageously - ■ designed as spherically shaped wooden bodies * are: driven by a shaft lo., lo ¹ ^ which can be designed as a flexible shaft - gear motor 8 and 8 '= Wälzkörperwelle and gear motor, can form a structural unit {^ pivotally mounted istο on the stand 1 are .; support arms 5 and 5' s arranged auf.denen clamps 6 * ^6!

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are mounted longitudinally displaceable and lockable = An. these clamps is the unit 8, lo, 11 or, S ^! , lo ',. II ¹ by means of a universal joint 7, 7 'or the like «, articulated. This makes it possible to bring the drive units into a certain angular position relative to the roller 3, while the longitudinal displacement of the clamps on the guides 5 feeds the drive units 8, 8 'and the like towards the surface of the roller 3 allowed. A locking screw is denoted by 9 ″ =

In the roller gap 12 formed by the calender rollers 3 and k there is a fabric web with cord threads arranged in parallel in a plane Beiiri common passage of the cord fabric 15 and the KautSGhukplatten not shown is guided to the nip 12 * through the nip 12, the coating of the web is carried on one side or both sides ,, in this operation, the rubber mixture Ik flowing laterally from the nip 12 from where check in the Width constantly changing protruding edge tips 15 '* form the so-called overflow * The overflow sticks to the calender roll 3 due to the adhesive properties inherent in the rubber, whereby it separated from the gummed fabric tape 13 that was pulled off in a straight line right side of the nip "12 indicated scribe 16 erke The overflow 15 is initially carried along a short distance on the circumference of the calender roll 3

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Edge through the rolling element'11 of. the roller 3 detached and turned over "; - By the rotary movement given to the rolling element 11, the overflow continues to receive an impulse to continue pouring or" rolling towards the center of the calender roller 3 - the edge of the overflow 15 follows immediately leaving the rolling element in the form of a bead "" - on "" the surface of the calender roll and unites with the rubber material 14 '"located in front of the nip YJ . The material 14' leaves the nip 17 on the other side of the stand as a drawn-out plate that enters the nip 12 on the back of the calender roll (not shown). The plate material 14 'regenerates, not only from the overflows 15, 15'i but it also to an additional loading from the outside,

The return of the overflow 15, 15 'through the rolling elements 11, 11' takes place automatically and without external intervention as soon as the rolling elements are started together with the calender 3. The rolling elements can be made of any suitable material, such as wood, plastic material and the like, since it prevents damage from permanent friction on the roll surface. The drive of the rolling elements by a flexible shaft grants the rolling elements an elastic support on the roll surface, which are drive units advantageously infinitely variable., to be able to adjust the circumferential speeds of the rolling elements to the withdrawal speed of the fabric web 13, so that the overflow cannot ^{build up in front of the rolling elements /:} .; * "ct instead of the" drive units in the " swiveling "■ structural unit to be included," the drive device can also be fixed in place at any point, a flexible shaft leading to the WKtekbodyern, aie can be connected to a swiveling arm with the universal joints. . ■ - _

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Claims (1)

Expectations Device for separating and returning the between ^v - J Calender rolls of gumming calenders on the side of a gummed fabric web. "resulting protruding rubber layer (overflow), thereby geke η η - ■ _; I show η et _{3 that rolling elements (-1I 3} 11 '" are arranged on the surface of a roller (3)) are., which perform a rotational movement directed towards the roller ends = Device according to claim -! ,, as characterized in that the rolling elements (11, - II ¹ ) - seen in the longitudinal direction - have a spherically shaped surface and consist of a non-metal., ZoB = wood, plastic and the like ₀ ,,. "■ ■ ■ 5 = device according to claims 1 and. 2., thereby ge k en η ζ eich η et , - - that the rolling elements '11, 11 ') on a guide (5, 5') free-floating by means of a universal ^{joint (-7, 7!} ) Are arranged o - ~ ■ ο device according to ,, one of claims 1 to 3 ^ dad u ν chgeke η η ζ eich η e t - that the ■ -. Rolling bodies (11, 11 ') can be driven by means of a flexible shaft (lo.j lo ^! ), "". -. - Device .according to one of claims 1 to k, dad u r> chgeke η η ζ eic h. η et that the rolling element, drive shaft and motor -a pivotable construction- 009808/1524 -Io - form unity. Device according to one of Claims 1 to 5, characterized in that the pivotable roller bodies (11, 11 ') on a guide (5j. 5') are adjustable along the roller axis. 7 '° device according to one of claims 1 to 6, characterized in that - that the drive of the rolling elements is derived from the drive of the rollers. OQ98O0 / 1524