SE190873C1

SE190873C1 -

Info

Publication number: SE190873C1
Authority: SE
Publication date: 1964-01-01

Description

Prioritet begard frem den 10 juni Gab 16 november 1959 (Forbundsrepubliken Tgskland) For bildning av korrugerade plattor av farska, plana fibercementplattor, som komma frail formatvalsen, finnas flera fOrfaranden. Enligt ett kant f8rfarande lagges den farska fibercementplattan pit ett vagformigt, styvt formunderlag och underkastas en tryckverkan mot en motform i form av valsar, som aro anordnade rorliga i hoj died med en sank-bar ram. Valsarna aro upphangda sâ i olika nivaer pa den sankbara ramen, att den for bildning av plattans mellersta vag avsedda valsen vid sankning av ramen forst kommer till anliggning mot fibercementplattan. Sedan den mellersta vagen har formats, komma efter varandra de pa bagge sidor om den mellersta valsen anordnade valsarna parvis samtidigt till verkan for bildning av tva vagor i plattan, medan fibercementplattans sidokanter stegvis dragas in mot den forst korrugerade mellandelen av plattan. Priority requested on 10 June Gab 16 November 1959 (Federal Republic of Germany) For the formation of corrugated sheets of fresh, flat fiber cement boards, which come from the format roll, there are several procedures. According to an edge method, the fresh fibrous cement slab pit is laid on a wavy, rigid mold base and subjected to a pressure action against a counter-mold in the form of rollers, which are arranged movably in height with a submersible frame. The rollers are suspended in different levels on the submersible frame so that the roller intended for forming the middle wave of the plate first comes into contact with the fiber cement plate when lowering the frame. After the middle web has been formed, the rollers arranged on the rear sides of the middle roll are arranged one after the other in pairs simultaneously to form two waves in the plate, while the side edges of the fiber cement plate are gradually retracted towards the first corrugated middle part of the plate.

Ett annat kant forfarande utnyttjar en anordning, i vilken formunderdelen och formOverdelen besta av enskilda element, som ha en offer den avsedda vagen avpassad arbetsyta och langstrackt form och vid sankning av formens overdel skjutas samman mot den mellersta kroppen transversellt mot sin langdriktning. Harvid korrugeras den farska fibercementplattan, som viler pa en lost pa formunderdelens enskilda kroppar lagd, bojlig duk av gummi eller annat elastiskt material, medan formoverdelen sankes och dess enskilda kroppar skjutas samman, mellan formunderdelens bojliga duk och en pa undersidan av formoverdelen anbragt, ocksa bojlig duk. For att de bojliga dukarna skola lianas fast pa de enskilda kropparna aro dessa ihaliga och ph de arbetsytorna bildande vaggarna forsedda med Ml, mot vilka de bojliga dukarna tryckas fast genom undertryck i de enskilda kropparna pa deras vaggar. Another edge method utilizes a device in which the mold lower part and the mold upper part consist of individual elements, which have a victim the intended wagon-adapted working surface and elongated shape and when lowering the upper part of the mold are pushed together towards the middle body transversely to its longitudinal direction. In this case, the fresh fiber cement plate, which rests on a load laid on the individual bodies of the molded part, is flexible, made of rubber or other elastic material, while the molded part is lowered and its individual bodies are pushed together, between the flexible cloth of the molded part and also flexible cloth. In order for the flexible cloths to be attached to the individual bodies, these hollow and ph the forming surfaces of the cradles are provided with Ml, against which the flexible cloths are pressed firmly by negative pressure in the individual bodies on their cradles.

En annan kand korrugeringsanordnings verkningssatt grundar sig aven pa styva formkroppar, som aro forskjutbara mot varandra. Denna anordning saknar dock en formunderdel med mot varandra forskjutbara kroppar. Formoverdelens mot varandra fOrskjutbara kroppar aro anbragta i en av ett bojligt holje bildad sugstampel med flera till sin volym foranderliga kamrar. Sugstampeln ken, eftersom holjets undersida ar luftgenomslappande, genom sugverkan fa upp och bara en plan fiberplatta, som skall formas. Plattan korrugeras genom mekanisk hopskjutning av de styva formkropparna, medan holjet med plat-tan Mlles fast pa formkropparnas undersida genom sugverkan. The operation of another known corrugator is also based on rigid bodies which are displaceable against each other. However, this device lacks a lower part with mutually displaceable bodies. The mutually displaceable bodies of the mold part are arranged in a suction stamp formed by a flexible housing with several chambers variable in volume. The suction punch, because the underside of the housing is air-permeable, can be raised by suction and only a flat fiber plate is to be formed. The plate is corrugated by mechanical joining of the rigid shaped bodies, while the casing with the plate is fixed to the underside of the shaped bodies by suction.

Det finnes aven ett f8rfarande f8r korrugering av fardigstallda, farska fibercementplattor under anvandning av ett formbord, som pa oversidan liar samma form som den anskade, korrugerade plattan. Pa formbordets yta lagges fibercementplattan sit uppifran genom en korbar transportanordning, att den under inverkan av sin egen vikt lagger sig i vagform pa formbordets yta, varefter plattan genom ett vertikalt glattningstryck bringas att anpassa sig tatt efter formytan. Glattningstrycket astadkommes med hjalp av latta valsar och/eller ett underifran mot vagdalarna i formbordets yta verkande undertryck. Genom detta fixeras samtidigt de avsnitt av de redan i vagform lagda fibereementplattorna med vagdalarna pa ytan av formbordet, som befinner sig omedelbart fore avlaggningsstallet. There is also a method of corrugating prefabricated, fresh fiber cement slabs using a mold table which, on the upper side, has the same shape as the claimed corrugated slab. On the surface of the mold table, the fiber cement plate is laid from above by a curable transport device, that it, under the influence of its own weight, lies in a wavy shape on the surface of the mold table, after which the plate is adapted to the mold surface by a vertical smoothing pressure. The smoothing pressure is achieved with the aid of light rollers and / or a negative pressure acting on the surface of the mold table from below the rocky valleys. This simultaneously fixes the sections of the fibrous element plates which have already been laid in the form of cradles with the cradles on the surface of the mold table, which are located immediately before the deposition stall.

Svarigheterna vid korrugering av farska fibercementplattor hero i forsta hand pa, att vid bildningen av vagtopparna och vagdalarna 2— — de konvext krokta delarna utsittas for dragning och de konkavt krOkta for tryck. Harvid foreligger risk for, att den mjuka, farska fi- bercementplattans ytstruktur undergar en andring, sa att latt sprickor uppkomma vid vagtopparna, vilka sprickor kunna leda till okad vattenupptagning med atfaljande frostskador. The difficulties in corrugating fresh fiber cement slabs are primarily due to the fact that during the formation of the carriage tops and carriage valves 2 - the convexly curved parts are subjected to drawing and the concave curved ones to pressure. In this case, there is a risk that the surface structure of the soft, fresh fiber cement slab undergoes a change, so that slight cracks appear at the tops of the carriages, which cracks can lead to increased water uptake with incidental frost damage.

Foreliggande uppfinning har till andarnal att undanroja denna risk och att samtidig forenkla korrugeringen och slutligen ¥ att forbattra korrugerade fibercementplattors mattnoggrannhet. The present invention has the object of eliminating this risk and at the same time simplifying the corrugation and finally improving the matte accuracy of the corrugated fiber cement boards.

Vid sattet enligt uppfinningen anvandes en med sughal forsedd, styv formunderdel och en Over denna eftergivande, spand bojlig duk, pa vilken den fardiga, farska fibercementplattan lagges och pa vilken den under korruge- ringen bringas att ansmyga sig efter formunderdelens vagformiga oversida. Uppfinningen bestar i, att fibercementplattan, som är lagd pa en luftgenomslappande, under hela korrugeringen under inverkan av starka, transversella dragkrafter staende duk av tyg eller liknande, suges fast mot den styva sugladans profilerade lock genom foretradesvis I plattans mitt borjande och successivt sidodelar omkring densamma pa.verkande undertryck, som verkar genom sughal. In the method according to the invention, a suction-provided, rigid molded lower part is used and an over-compliant, stretched flexible cloth, on which the finished, fresh fiber cement plate is laid and on which it is made to bend after the corrugated upper part of the molded lower part during corrugation. The invention consists in that the fiber cement plate, which is laid on an air-permeable, under the whole corrugation under the influence of strong, transverse tensile forces cloth of fabric or the like, is sucked against the profiled lid of the rigid sugladan by preferably in the middle of the plate and successively side parts around it acting under pressure, which acts through the suction hall.

Sattet enligt uppfinningen skiljer sig salunda principiellt frail alla hittills kanda och i praktiken vanliga korrugeringsforfaranden genom att korrugeringen icke sasom hittills genomfOres under enbart eller extra anvandning av mekaniskt arbetande, fram och tillbaka eller uppat och nedat rorliga medel, utan uteslutande genom ett pa plattans ena sida verkande, successivt olika delar av plattan paverkande vakuum pa en stegvis efterdragen, bojlig, luftgenomslapplig duk. Harvid utsattas fibrerna icke pa langt nar f6r sa starka pakanningar i de kritiska zonerna, dvs. inom vagtopparna och vagdalarna som vid direkt, mekanisk eller pneumatisk tryckverkan pa fibercementplattan i vertikalled eller horisontailed. Tappan pa. en redan bildad vag Hiles fast mot formunderlaget genom sugning och hales fri frau alit tryck och dragning, da under den fortsatta korrugeringen sidodelarna av den bojliga duken med fibercementplattan drages in i riktning mot den redan korrugerade mellandelen av fibercementplattan. The method according to the invention thus differs in principle from all hitherto known and in practice ordinary corrugation procedures in that the corrugation is not carried out as hitherto under only or extra use of mechanical work, back and forth or up and down movable means, but exclusively through one side of the plate acting, successively different parts of the plate acting on a vacuum on a stepwise retracted, flexible, air-permeable fabric. In this case, the fibers are not exposed to such strong packings in the critical zones, ie. within the carriage tops and carriage valleys as in the case of direct, mechanical or pneumatic pressure action on the fiber cement plate in the vertical or horizontal direction. Tappan pa. an already formed vague Hiles fixed to the mold base by suction and hauls free frau alit pressure and drawing, then during the continued corrugation the side parts of the flexible fabric with the fiber cement plate are pulled in towards the already corrugated middle part of the fiber cement plate.

Vid korrugeringen av fibercementplattan enligt uppfinningen upptrada icke nagra deformationer i vagtopparnas enskilda skikt, utan IA es fibercementplattan mjukt omkring sugladelockets vagtoppar utan att nagon strukturandring intrader i fibercementplattan. Detsamma galler aven bildningen av va.gdalarna. Harigenom är huvudorsaken till uppkomsten av ytsprickor undanrojd. During the corrugation of the fiber cement plate according to the invention, no deformations occurred in the individual layers of the carriage tops, but the fiber cement plate softly around the carriage tops of the suction lid without any structural change entering the fiber cement plate. The same applies to the formation of va.gdalarna. As a result, the main cause of the appearance of surface cracks is eliminated.

Eftersom hela ytan pa det med flera hal med liten diameter forsedda formunderlaget bildar en styv kropp med oforanderligt exakt yta och vagbildningen uteslutande sker genom sugverkan, varvid de i tvarled verkande sug- kraftkomponenterna upptagas av duken, sakerstalles exakt, profiltrogen formning av plattan med slat yta. Since the entire surface of the small-diameter, small-diameter mold base forms a rigid body with an invariably precise surface and the vaginal formation takes place exclusively by suction, the transverse suction components being absorbed by the fabric, the precise, profile-faithful formation of the plate with a smooth surface is ensured. .

Det ma framhallas, att det finnes ett kant forfarande for framstallning av korrugerade fibercementplattor, enligt vilket en pastafor- mig blandning av fiberamnen och cement utbredas pa det korrugerade och med sughal forsedda locket till en med ett vatskegenom- slappligt ytskikt betackt suglada. Vid det kanda forfarandet smyger tygskiktet redan frail borjan tatt an mot sugladans korrugerade vagg, medan det noggrant folj er dess vagform, och forblir i detta lage oforanderligt liggande pa sugladelocket under den med fordelarvalsar och tryckvalsar genomforda bildningen av plattan och den darvid skeende komprimeringen av materialet. Genom sugladans sugverkan utsuges overskottsvatten ur den pastaformiga blandningen av fiberamne och cement, varvid tygskiktet tjanstgOr som filter. Genom sugladans sugverkan halles dessutom det massablandningen uppbarande tyget fast pa sugladelocket, da fordelarvalsarna och tryckvalsarna Elms fram och tillbaka Over massan, sa. att denna formas till en korrugerad platta. It should be noted that there is an edge process for the production of corrugated fiber cement boards, according to which a pasty mixture of the fiber blanks and cement is spread on the corrugated and suction-provided lid to a suglad covered with a liquid-permeable surface layer. In the known process, the fabric layer already sneaks from the beginning against the corrugated cradle of the sugladan, while carefully following its cradle shape, and in this layer remains unchanged lying on the suglade lid during the formation of the plate and the resulting compression of the material through distributor rollers and pressure rollers. . Through the suction action of the suction ladle, excess water is sucked out of the pasty mixture of fibrous substance and cement, whereby the fabric layer serves as a filter. Due to the suction action of the suction ladle, the fabric carrying the pulp mixture is also held firmly on the suction locket lid, as the distributor rollers and the pressure rollers Elms back and forth over the mass, so. that this is formed into a corrugated plate.

Vid sattet enligt uppfinningen kan den mot det korrugerade och perforerade formunderlaget verkande sugkraften verka lika starkt eller med vaxlande styrka Over fibercementplattans hela yta, sa att fibercementmaterialet komprimeras andamalsenligt pa alla stallen oberoende av om fibercementplattan i farskt och plant utgangstillstand pa enskilda stallen uppvisar av tillverkningen betingade tjockleksvariationer inom ramen for de tinatliga toleranserna eller om de efter varandra behandlade fibercementplattorna aro olika tjocka. Den skonsamma behandlingen av den mjuka fibercementplattan beframj as genoni den stramt Over formunderlaget spanda, bojliga duken och kan aven uppnas genom att undertryckets styrka och inverkningstid anpassas after fibercementmaterialets egenart i varje enskild korrugeringszon. Salunda kan det for bibehallande av den farska fibereementplattans ytstruktur vara lampligt att genomfora bildningen av den forsta vagen i varje platta nagot langsammare och de 8vriga va.gorna alit snabbare. Hela korrugeringen tar vasentligt mindre tid an vid de hittills kanda forfarandena, varigenom hogre kapacitet och battre rantabilitet uppnas vid den av mycket enkla anordningar bestaende anlaggningen. In the method according to the invention, the suction force acting on the corrugated and perforated mold substrate can act as strong or with varying strength over the entire surface of the fiber cement board, so that the fiber cement material is compressed proportionally in all stalls regardless of whether the fiber cement board. thickness variations within the limits of the tin tolerances or if the fiber cement boards treated one after the other are of different thicknesses. The gentle treatment of the soft fiber cement board promotes genius the tight Over the mold base spandy, flexible fabric and can also be achieved by adjusting the strength and impact time of the negative cement according to the uniqueness of the fiber cement material in each individual corrugation zone. Thus, in order to maintain the surface structure of the fresh fibrous element plate, it may be appropriate to carry out the formation of the first wave in each plate a little slower and the other waves a little faster. The whole corrugation takes considerably less time in the hitherto known procedures, whereby higher capacity and better profitability are achieved in the plant consisting of very simple devices.

For bibehallande av fibercementplattans ytstruktur inom vagtopparnas hjassor har det visat sig lampligt att undandra hjassavsnittens sugverkan. Detta kan uppnas pa enkelt satt genom att formunderlagets korrugerade hjassdelar utforas utan hal. In order to maintain the surface structure of the fiber cement plate within the shafts of the carriage tops, it has proved appropriate to avoid the suction effect of the shank sections. This can be achieved in a simple way by making the corrugated brass parts of the mold base without a halo.

Det ar vasentligt, att fibercementplattans, — —3 hjassdelar sa snarl som en vag liar bildats, Wallas kvar orubbligt pa det perforerade form- underlaget. For detta andamal anbringas pa. bfigge sidor om hjasszonen langsgaende, fina slitsar, sa att formunderlagets hj Ossdelar kun- na bildas av fasta eller glidbara valsar och de enskilda formplatdelarnas kanter sluta p. ringa avstand fran valsmanteln. It is essential that the fibers of the fiber cement slab, as soon as a wavy layer is formed, remain intact on the perforated mold substrate. For this purpose is applied to. bfigge sides of the hjas zone longitudinally, fine slits, so that the mold base hj Ossdelar can be formed by fixed or slidable rollers and the edges of the individual mold plate parts end at a small distance from the roll shell.

Uppfinningstanken kan aven forverkligas att vane enskild vag bildas med ett svagt undertryck av c:a 30 %, varefter vagen for- mas mom vagdalszonen med starkare undertryck, c:a 80 %. The inventive idea can also be realized that the habit of an individual wagon is formed with a slight negative pressure of about 30%, after which the wagon is formed in the vagal zone with a stronger negative pressure, about 80%.

For genomforande av sattet enligt uppfinningen anvandes en konstruktivt enkel anordning, vilken sa till vida liknar den redan omnamnda anordningen for framstfillning av korrugerade fibercementplattor av en pastaformig blandning av fibermaterial och cement, att den ocksit uppvisar en. suglada, som liar ett stelt lock, vilket fir korrugerat pA Oversidan och fOrsett med flera sughal. Detta lock är tackt med en bajlig, luftgenomslapplig duk av tyg eller liknande. For sugkorrugeringen enligt uppfinningen an anordningen utford pa ett speciellt salt. Det utmarkande for anordningen enligt uppfinningen bestar i, att sug'Arlan är uppdelad pa fiera mot sugladelockets vigor svarande antal lfingsghende, enskilda sugkamrar, som aro anslutna till en gemensam sugledning Over ventiler far den stegvis skeende inkopplingen av sugkamrarna efter varandra, medan den luftgenomslappliga, tunna, bojhiga duken, exempelvis ett tyg av slitstarka syntetfibrer, genom vikter halles spand eftergivande Over sugladelocket. For carrying out the set according to the invention, a constructively simple device was used, which is so similar to the already mentioned device for producing corrugated fiber cement boards from a pasty mixture of fiber material and cement, that it also has one. suglada, which has a rigid lid, which is corrugated on the upper side and provided with several suction halls. This lid is covered with a flexible, air-permeable cloth of fabric or the like. For the suction corrugation according to the invention, the device is challenged with a special salt. The distinguishing feature of the device according to the invention is that the suction chamber is divided into four corresponding suction chambers, corresponding to a number of living, individual suction chambers, which are connected to a common suction line above valves. thin, buoyant cloth, for example a cloth of durable synthetic fibers, through weights halls bucket resilient Over the sugladelocket.

Ventilerna kunna lampligen installas automatiskt med hjalp av en elektrisk anordning. Genom utbyte av belastningsvikterna ir det mojligt att avpassa den duken spdnnande kraften efter vikten pa de fibercementplattor, som skola korrugeras. The valves can be installed automatically with the help of an electrical device. By changing the load weights, it is possible to adjust the tensile force of the fabric to the weight of the fiber cement boards to be corrugated.

Vikterna maste lasas i det uppnadda hojdlaget, da korrugeringen an avslutad, sa att de, cla den korrugerade fibercementplattan lyftes fran sugladans lock med hjfilp av en i och far sig kind sugstampel, icke falla ned och genom oreglerbar strackning av duken deformera eller skada den nykorrugerade plattan. The weights must be loaded in the reached height layer, when the corrugation is completed, so that they, cla the corrugated fiber cement plate is lifted from the sugladan's lid with the help of an in and out cheek suction punch, do not fall down and by irregular stretching of the cloth deform or damage the newly corrugated the plate.

Enligt uppfinningen foreslas, att duken med sina kanter fastes pfi valsar och att for drivning av valsarna mot varandra mot verkan av det pa dem genom viktbelastningen verkande vridmomentet anordnas en tvangsmassig drivning genom en bromsvaxehnotor, som genom ett elektriskt kontaktverk, som sty inkopplingen av de enskilda sugkamrarna eller varandra, är styrd sd, att belastningsvikterna alltefter den for tdckning av den under inverkan av sugningen staende delen av sugladelocket erforderliga zonbredden av det bojliga underlaget lyftas med langsam och styrd hastighet och efter avtagning av den fardigkorrugerade fibercementplattan auto matiskt sdnkas till utgangslaget, medan den omstallda bromsvaxelmotorn automatiskt roterar baklanges. According to the invention, it is proposed that the cloth be fastened to rollers with its edges and that in order to drive the rollers against each other against the action of the torque acting on them by the weight load, a forced drive is arranged through a brake wax motor, which through an electrical contactor the suction chambers or each other are controlled so that the load weights are lifted at a slow and controlled speed according to the zone width of the flexible base required to cover the part of the suction lid under the influence of the suction, and after removal of the ready-corrugated fiber cement plate while the converted brake gear motor automatically rotates backwards.

Harvid glider duken med den dfirpa liggande, farska fibercementplattan under noggrann reglering av aktiveringen av de enskilda sug- kamrarna langsamt efter och korrugeringen sker av de enskilda ytavsnitten pa fiberce- mentplattan med konstant korrugeringshas- tighet sa langsamt, att den plana plattan far tihräcklig tid for vagbildning i motsvarighet till sin tjocklek. Sedan korrugeringen har av- slutats och den fardigkorrugerade fibercementplattan her tagits av fran sugladans lock omstalles bromsdrivmotorn automatiskt pa gang baklanges. Vikterna, Som halla duken stram Over sugladans lock, sfinkes hdrvid langsamt till sitt utgangslage utan att alltfor 'raga spfinnkrafter kunna komma till verkan pa duken. In this case, the fabric with the deep-lying, fresh fiber cement board slides slowly under careful control of the activation of the individual suction chambers and the corrugation of the individual surface sections on the fiber cement board with a constant corrugation speed so slowly that the flat board has sufficient time for vagal formation corresponding to its thickness. After the corrugation has been completed and the finished corrugated fiber cement plate has been removed from the sugladan's cover, the brake drive motor is automatically restructured in reverse. The weights, which hold the cloth tight over the lid of the sugladan, are thereby slowly spun to their starting position without too little spinning forces being able to take effect on the cloth.

Uppfinningen kommer i det foljande att beskrivas narmare med hanvisning till bifogade ritningar, vilka som exempel visa nagra utfaringsformer. Fig. 1 an en perspektivvy av sugformladan och sugledningen med en pa Mans lock liggande, redan korrugerad fibercementplatta. Fig. 2 och 3 visa i storre skala partiella tvfirsnitt genom sugladan enligt tvâ olika utforingsformer. Fig. 4 är en vy framifran av en anordning for korrugering av fibereementplattor genom sugning med en mekanisk drivanordning for stegvis lyftning och sankning av de belastningsvikter, som halla den bojliga duken spand. Fig. 5 fir en vy uppifrdn i forhallande till fig. 4 jamte en del av sugladan. Fig. 6 an ett kopplingsschema for den styranordning, som reglerar inkopplingen av de enskilda sugkamrarna och spanningen och den successiva eftergiften av den bojliga duken reglerande bromschivmotorn. Fig. 7 visar de mot styrinrattningens olika kopplings'igen svarande arbetstempona. The invention will be described in more detail below with reference to the accompanying drawings, which show by way of example some embodiments. Fig. 1 is a perspective view of the suction molding and the suction line with an already corrugated fiber cement plate lying on Mann's lid. Figs. 2 and 3 show on a larger scale partial cross-sections through the suction cup according to two different embodiments. Fig. 4 is a front view of a device for corrugating fiber cement boards by suction with a mechanical drive device for stepwise lifting and lowering of the load weights which hold the flexible fabric buckle. Fig. 5 is a top view in relation to Fig. 4 and a part of the suction cup. Fig. 6 is a circuit diagram of the control device which regulates the connection of the individual suction chambers and the voltage and the successive remission of the flexible cloth regulating the brake disc motor. Fig. 7 shows the operating temps corresponding to the various coupling devices of the control device.

I fig. 1 betecknar 1 en prismatisk platla.da, som ãr langstrackt rektanguldr i ldngd- och breddled. Den är nagot storre an den fibercementplatta 6, som skall korrugeras, da den fir plan och utbredd. Ladan 1 fir upptill sluten genom ett korrugerat lock 2, som fir for-sett med flera Over hela dess yta fordelade hal 3. Ladans inre ãr genom parallellt med Mans langsgaende vfiggar forlopande, vertikala mellanvaggar 4 uppdelat pa flera enskilda kamrar 5, vilkas antal är en enhet storre an antalet vagor i den korrugerade platta, som skall framstallas. In Fig. 1, 1 denotes a prismatic plate, which is an elongated rectangular gold in longitudinal and latitudinal directions. It is slightly larger than the fiber cement board 6 to be corrugated, as it is flat and widespread. The barn 1 is closed at the top by a corrugated lid 2, which is provided with several halls 3 distributed over its entire surface. one unit greater than the number of scales in the corrugated plate to be produced.

PA ritningen visas en anordning for framstallning av korrugerade plattor, vilka sasom vanligt vid den ena langsgdende kanten ha en stigande vagskankel 6a och vid den andra kanten en fallande vagskankel 6b och exempelvis omfatta fern vagor. The drawing shows a device for producing corrugated plates, which as usual have at one longitudinal edge a rising carriage leg 6a and at the other edge a falling carriage leg 6b and for example comprise four carriages.

Mellanvaggarna 4 aro anordnade nedanfor hjasslinjerna till de enskilda vasbergen i locket 2 under lufttat tillslutning av de enskilda 4— — kamrarna 5 mot varandra. Varje enskild kammare 5 fir genom en stuts 7 forbunden med en T-formig sugledning 8, vars grenror 8' är anslutet till en pa ritningen icke visad vakuumkalla, exempelvis en sugflakt av kand typ. I varje anslutningsstuts 7 finnes en ventil 9, som medelst en manoverspak 9' kan installas for hand eller hellre oppnas och stangas automatiskt genom en lamplig styranordning. The intermediate cradles 4 are arranged below the ridge lines of the individual vases in the lid 2 under aerated closure of the individual chambers 5 to each other. Each individual chamber 5 passes through a nozzle 7 connected to a T-shaped suction line 8, the manifolds 8 'of which are connected to a vacuum cold, not shown in the drawing, for example a suction flap of a known type. In each connection piece 7 there is a valve 9, which by means of a control lever 9 'can be installed by hand or rather be opened and closed automatically by a suitable control device.

OvanfOr det korrugerade locket 2 pa sugformla.dan 1 finnes en luftgenomslapplig, böj - hg duk 10, exempelvis av konst- eller syntetfibrer med hag draghallfasthet. Dukens 10 Over konsoler 13 i ladans bagge langsgaende kanter nedhangande kantdelar aro fOrsedda med fallar 11, i vilka som belastningsvikter verkande metallstanger 12 aro instuckna. Metallstangernas 12 vikt fir avpassad sâ efter vikten pa den fibercementplatta 6, som skall korrugeras, att duken är i stand att i stramt spant tillstand uppbara den pa duken lagda, plana fibercementplattan 6. Above the corrugated lid 2 on the suction formula 1 there is an air-permeable, bendable fabric 10, for example of artificial or synthetic fibers with high tensile strength. The edging parts of the fabric 10 Over brackets 13 in the ram's longitudinal edges hanging edge parts are provided with traps 11, in which metal rods 12 acting as load weights are inserted. The weight of the metal rods 12 is adapted to the weight of the fiber cement board 6 to be corrugated so that the fabric is able to support the flat fiber cement board 6 laid on the fabric in a tightly tensioned condition.

Den ovan till sina viktigaste delar beskrivna korrugeringsanordningen fungerar pa foljande satt: Sedan den i mjukt, formbart tillstand som en plan skiva fran formatvalsarna kommande fibercementplattan 6, som har tillskurits i det Alta formatet, liar lagts pa den luftgenomslappliga duken 10, alstras genom paverkan av spaken 9' till ventilen i stutsen 7, som le-der till sugladans 1 mellersta kammare 5, i denna kammare ett vakuum av c:a 30 %. Harvid drages plattans 6 centrala, langsga.- ende zon mot locket 2 tillsammans med du-ken. 10 ovanfor den under vakuum staende sugkammaren, sa att den forsta vagen bildas i fibercementplattan 6. Harefter oppnas samtidigt ventilerna 9 till mellankammarens bagge grannkamrar 5, sit att det pa bagge sidor om den forst bildade vagen bildas tva nya vagor i fibercementplattan 6. Pa samma satt alstras sedan de bagge yttersta vagorna och stutligen inkopplas den bakom sugladans framre, langsgaende vagg i fig. 1 befintliga sugkammaren 5, sit att den farska plattans 6 kantdel, som bildar den fallande skankeln 6b, bringas till tat anliggning mot sugladans 1 korrugerade lock 2. The corrugation device described above in its most important parts operates as follows: After the fiber cement plate 6, which has been cut in the Alta format, which has been cut in the Alta format in a soft, malleable condition, is laid on the air-permeable fabric 10, is generated by the influence of the lever 9 'to the valve in the nozzle 7, which leads to the middle chamber 5 of the suction dance 1, in this chamber a vacuum of about 30%. Then the central, longitudinal zone of the plate 6 is pulled towards the lid 2 together with the cloth. 10 above the suction chamber under vacuum, so that the first carriage is formed in the fiber cement plate 6. After this, the valves 9 to the rear chambers 5 of the intermediate chamber are opened simultaneously, so that on the rear sides of the first formed carriage two new carriages are formed in the fiber cement plate 6. then the ram's outermost cradles are generated and the suction chamber 5 existing behind the sugladan's longitudinal cradle in fig. .

Genom den periodiska inkopplingen av de enskilda sugkamrarna 5 drages den pa duken 10 liggande fibercementplattan 6 stegvis fran bagge sidor in mot plattans mitt. Det harvid upptradande friktionsmotstandet är Mgt till foljd av den mellanliggande, slata duken 10 och kan genom det redan beskrivna inbyggandet av valsar i sugladan minskas ytterligare. Due to the periodic connection of the individual suction chambers 5, the fiber cement plate 6 lying on the fabric 10 is pulled stepwise from rear sides towards the center of the plate. The frictional resistance which occurs in this case is Mgt due to the intermediate, smooth cloth 10 and can be further reduced by the already described incorporation of rollers in the suction barn.

Sedan alla sugkamrarna 5 ha kopplats in pa det ovan beskrivna sattet och korrugeringen av fibercementplattan 6 liar avslutats, stangas alla ventiler 9 samtidigt. For att den viktbelastade duken 10 i detta ogonbliek icke skall kunna medfora flagon deformering av den korrugerade plattan, maste de stangfor miga belastningsvikterna 12 sparras vid det hojdlage, som de inta under arbetsforloppets slutsteg. After all the suction chambers 5 have been connected in the manner described above and the corrugation of the fiber cement plate 6 has been completed, all valves 9 are closed simultaneously. In order that the weight-laden fabric 10 at this moment should not be able to cause flake deformation of the corrugated plate, the rod-shaped load weights 12 must be sparged at the height layer which they assume during the final step of the working process.

Hartill kan lampligen en mekaniskt eller elektriskt styrd anordning anvandas, scan dr sit utformad att den hailer kvar de stangformiga belastningsvikterna 12 flagon tid i det upphissade lfiget och under den period dit den fardigkorrugerade plattan 6 medelst en sugstampel lyftes frau sugladan 1, 2 och avlagges pit en staplingsvagn later dam langsamt sjunka ned till utgangslaget. Man maste under alla forhallanden undvika, att vikterna falla ned, emedan detta skulle kunna medfora skador pa. den nyformade plattan och alltfor hastig utnotning av duken 10. For this purpose, a mechanically or electrically controlled device can be used, the scan being designed so that it retains the rod-shaped load weights 12 for a while in the raised body and during the period where the finished corrugated plate 6 is lifted from the suction cup 1, 2 by means of a suction stamp a stacking trolley lets the lady slowly sink down to the starting team. Under all circumstances, the weights must be avoided, as this could cause damage. the newly formed plate and excessive use of the cloth 10.

Ovan liar korrugeringsforfarandet enligt uppfinningen beskrivits i sin enklaste utforingsform, med vilken fullt tillfredsstallande produkter kunna erhallas. Harvid har forutsatts, att mellanvaggarna 4, som skilja de enskilda kamrarna 5 fran varandra, stra.cka sig anda upp till undersidan av vagbergen i ladans 1 lock 2, sasom visas i fig. 2. De hangs vagbergens hjasslinjer forlopande zonerna av locket sakna sughal. Anda:malet harmed fir att undandra det kritiska hjassomradet i vagbergen pa fibercementplattan 6 suginverkan for undvikande av varje strukturandring vid vaghjassornas yta, vilken kan fora till sprickbildning. The above corrugation process according to the invention has been described in its simplest embodiment, with which fully satisfactory products can be obtained. It has been assumed that the intermediate cradles 4, which separate the individual chambers 5 from each other, extend upwards to the underside of the cradles in the lid 2 of the barn 1, as shown in Fig. 2. . The purpose is to absorb the critical area of the rock on the fiber cement slab 6 in order to avoid any structural change in the surface of the rock, which can lead to cracking.

Da de enskilda sugkamrarna 5 fran varandra skiljande mellanvaggarna 4 aro anordnade i genom hjassan pa vagbergen pa det korrugerade locket 2 resp. 2', gaende plan bli after bildning av den forsta mittvagen vid den anslutande inkopplingen av vardera tv& efterfoljande sugkamrar vid vane tillfalle all-Lid Ivit vagor fardigformade blott till hfilften, och darvid Mlles cementplattan av sughalen_ 3 i de under vakuum staende sugkamrarna fast mot farskjutning och vridning. mom omradet for vagbergen pa det vagformade locket ligger cementplattan 6 forst hell last pa det profilerade locket. Da de efterfoljande sugkamrarna sattes under vakuum, drages cementplattan 6 och den denna barande luftgenomslappliga duken 10 fast mot sughalen 3 pa dessa sugkamrar, och det fir ingen risk for att den bojliga duken och cementplattan utsates for en dragpalcanning inom omradet for vagbergen pa locket, dar det icke finnes nagra sughal. Pa detta salt uteslutes med sakerhet deformering av fibercementmaterialet mom omradet for va.ghjassan. When the individual suction chambers 5 separating the intermediate cradles 4 are arranged in through the tops of the cradles on the corrugated lid 2 resp. 2 ', the plane becomes after the formation of the first central carriage at the connecting connection of each of the two subsequent suction chambers, as usual and twisting. In the area of the rock bed on the rock-shaped lid, the cement plate 6 is first placed on the profiled lid. When the subsequent suction chambers were placed under vacuum, the cement plate 6 and the air-permeable cloth 10 carrying it are tightened against the suction tail 3 of these suction chambers, and there is no risk of the flexible cloth and cement plate being subjected to a tensile scan in the area of the rock there are no sughal. On this salt, deformation of the fiber cement material in the area of the wet mesh is certainly excluded.

Fasthallningen av de pa bagge sidor om vagbergets hjassa ligga:nde remsorna av fibercementplattan 6 ar sarskilt god med den i fig. 3 visade utformningen av sugladans 1 lock 2. I sugladan aro harvid inbyggda valsar 16, som bilda det korrugerade lockets vaghjassor. De V-formigt bojda, med sughal 3 forsedda platremsorna 2', som komplettera locket, nit under kvarlamnande av smala slitsar 17 anda - - fram till valsmantlarna. De millimeterfina, over sugladans 1 hela langd genomgaende slitsarna 17 medfora en mycket effektiv fasthillfling av plattan 6 pa bagge sidor om hjasszonen, da ett undertryek fistadkommes i underliggande kammare 5. The holding of the stripes of the fiber cement plate 6 lying on the rear sides of the rock wall is particularly good with the design of the column 1 of the suction cup 1 shown in Fig. 3. The V-shaped bent, suction hall 3 provided plate strips 2 ', which complete the lid, rivet while leaving narrow slits 17 breath - - up to the roll jackets. The millimeter-fine slits 17 passing over the entire length of the suction dance 1 entail a very effective fixing of the plate 6 on the rear sides of the hair zone, as a negative pressure is obtained in the underlying chamber 5.

Valsarna 16 kunna vara ihaliga eller massiva sasom visas i fig. 3 och lagrade roterbart I lhdans 1 gavlar. I sistnamnda fall utfora de en vridningsrorelse vid indragningen av plattans 6 sidokantdelar ph den bojliga duken 10, sh att den stegvis skeende indragningen kan forsiggâ nastan utan friktionsmotstand. The rollers 16 may be hollow or solid as shown in Fig. 3 and rotatably mounted in the ends of the dance 1. In the latter case, they perform a rotational movement during the retraction of the side edge parts of the plate 6 on the flexible fabric 10, so that the step-by-step retraction can proceed almost without frictional resistance.

Vid sarskilt breda plattor och/eller sarskilt Mgt antal vagor kunna valsarna 16 drivas synkront. In the case of particularly wide plates and / or a particularly large number of scales, the rollers 16 can be driven synchronously.

De pa avstand frail de roterbara valsarna 16 slutande mellanvaggarna 4 aro tatade mot valsarna 16 genom gummilister 18, som anligga mot valsarna frail bagge sidor och av vilka den ena eller den andra under inverkan av undertrycket i angransande kammare 5 bringas till tat anliggning mot valsen. The intermediate walls 4 closing at a distance from the rotatable rollers 16 are abutted against the rollers 16 by rubber strips 18, which abut against the rollers from behind sides and one or the other of which, under the influence of the negative pressure in adjacent chamber 5, is brought into close contact with the roller.

Fig. 3 visar em ytterligare mojlighet att utforma sugladan, vilken bestar i, att under vane vfigs vagdal en rorformig kanal 20 Or bildad senora anbringande av en uppfit Oppen halprofil 19. SA% snart som korrugeringen av fiberplattan 6 liar fullbordats under inverkan av ett vakuum av c:a 30 %, sattes kanalen 20 I forbindelse med ett starkt vakuum ph c:a 80 %. Harigenom uppnas, att fibercementmaterialet komprimeras ytterligare i vagdalen. utforingsformen enligt fig. 4 och 5 aro den bojliga dukens 10 sidokanter fasta i de cylindriska mantlarna till tva valsar 22 °eh 22', vilka aro lagrade vridbart i sugladans 1 bagge gavlar 1' pa samma niva som de lockets vagberg bildande valsarna 16. Vid sugMans andra gavel i forhallande till vakuumanslutningen aro de rullarna 22, 22' uppba.- rande axlarna 23 och 23' dragna genom gavelvaggen 1'. Fig. 3 shows a further possibility of designing the suction box, which consists in a tubular channel 20 formed during the usual valley of the carriageway. of about 30%, the channel 20 was connected to a strong vacuum ph about 80%. This ensures that the fiber cement material is further compressed in the vagal valley. In the embodiment according to Figs. 4 and 5, the side edges of the flexible fabric 10 are fixed in the cylindrical sheaths of two rollers 22 ° and 22 ', which are rotatably mounted in the ram ends 1' of the sugladan 1 at the same level as the rollers 16 forming the lid rock. The second end of the suction in relation to the vacuum connection is the shafts 22, 22 'supporting the shafts 23 and 23' pulled through the end wall 1 '.

Ph den fria anden till varje axel 23, 23' Or fast ett kedjehjul 24, 24', vars tillhorande kedjedrivhjul 25, 25' ar fast pa en centralt i gaveln 1' lagrad axel 26. Ph axelns 26 framre ande dr fastkilat ett stone kedjehjul 27. Detta Or genom en Andros kedja 28 forbundet med ett kedjehjul 29 fast pa axeltappen 31 till en under sugladan 1 anordnad, elektrisk bromsvaxelmotor 30. The free spirit of each shaft 23, 23 'is fixed to a sprocket 24, 24', the associated sprocket 25, 25 'of which is fixed to a shaft 26 centrally located in the end 1'. 27. This Or through an Andros chain 28 connected to a sprocket 29 fixed on the shaft pin 31 to an electric brake gear motor 30 arranged below the suction cup 1.

Elmotorns 30 vridmoment overfores Over kedjetransmissionen 29, 28, 27 och Over kedjorna 32 och 32', av vilka kedj an 32 Or led-hart fast pa ett stale ph det bakre kedjehjulet 25 och den andra kedjan 32' ph ett diametralt motstaende stalk pa det andra kedjehjulet 25', till kedjehjulen 24 och 24'. liarigenom bringas rullarna 22 och 22' att rotera mot varandra inat och utht. Vid -vridningen it, se pilen x i fig. 4, avspannes duken under lyftning av de pa. valsarna 22 och 22' ver kande vikterna 33 och 33', medan vid vridning utat, se pilen y i fig. 4, vikterna 33 och 33' sankas, sa. att de stracka duken 10. The torque of the electric motor 30 is transmitted over the chain transmission 29, 28, 27 and over the chains 32 and 32 ', of which the chain 32 is articulated to a rod ph the rear sprocket 25 and the other chain 32' to a diametrically opposed stalk thereof. second sprocket 25 ', to sprockets 24 and 24'. thereby causing the rollers 22 and 22 'to rotate toward each other inwardly and outwardly. When turning it, see arrow x in Fig. 4, the cloth is relaxed while lifting the pa. the rollers 22 and 22 'move the weights 33 and 33', while when turning outwards, see the arrow y in Fig. 4, the weights 33 and 33 'are lowered, sa. that they stretch the cloth 10.

Vikterna 33, 33' Oro upphangda i de nedathangande andarna ph kedjorna 32, 32', som gh Over kedjehjulen 24, 24'. Motsvarande vikter ph den fibercementplatta 6, som skall korrugeras, avpassas vikterna 33, 33' sa. att den bojliga duken 10 Mlles spand och icke mer eller mindre sjunker mellan hjassorna pi vagbergen ph locket 2, dfi cementplattan 6 lagges pi duken 10. Vikterna 33, 33' maste darutover vara sa stora att Oven sugningen frail de enskilda sugkamrarna 5 icke Or i stand till att bringa den bojliga duken 10 med den darpa lagda cementplattan 6 till fullstandig anliggning mot den vagiga profilen pa locket 2, resp. 2', 16. En fullstandig neddragning av duken 10 med cementplattan 6 ner i vagdalarna pa det profilerade locket ager i stallet forst rum da vikterna 33, 33' Over kedjehjulen 25, 25' och kedjorna 32, 32' lyftes ett litet stycke, som just racker till att efterdraga duken 10 fran bada sidorna sa mycket som kraves for en fullstandig anliggning av duken 10 och den darph vilande cementplattan 6 mot de for sugning utsatta zonremsorna ph det profilerade locket 2 resp. 2', 16. P0 detta satt st-yres den zonvisa indragningen av cementplattan 6 in i vagdalarna pa det profilerade locket 2 resp. 2', 16 exakt och en alltfor snabb, slagartad insugning mot det profilerade locket, vilken skulle kunna medfOra en bristling i den luftgenomslappliga duken 10 eller strackningen i cementplattan 6, forhindras. Weights 33, 33 'Concerns suspended in the downward spirits ph chains 32, 32', as gh Over sprockets 24, 24 '. Corresponding weights ph the fiber cement plate 6 to be corrugated are adapted to the weights 33, 33 'sa. that the flexible cloth 10 Mlles spand and not more or less sinks between the tops of the rock mountains ph the lid 2, dfi the cement plate 6 is laid on the cloth 10. The weights 33, 33 'must moreover be so large that the suction from the individual suction chambers 5 is not able to bring the flexible cloth 10 with the laid cement plate 6 into complete abutment against the wavy profile on the lid 2, resp. 2 ', 16. A complete lowering of the cloth 10 with the cement plate 6 down into the rock valleys on the profiled lid takes place in the stable only when the weights 33, 33' above the sprockets 25, 25 'and the chains 32, 32' are lifted a small piece, which just racks to retract the cloth 10 from both sides as much as is required for a complete abutment of the cloth 10 and the darph resting cement plate 6 against the zone strips exposed to suction ph the profiled lid 2 resp. 2 ', 16. In this way the zonal retraction of the cement plate 6 is controlled into the rock valleys on the profiled lid 2 resp. 2 ', 16 precisely and an excessively fast, impact-like suction against the profiled lid, which could cause a rupture in the air-permeable cloth 10 or the stretching in the cement plate 6, is prevented.

Vikterna 33 och 33' Oro utbildade som kolvar, vilka glida i vertikala cylindrar 34 och 34' och vilkas kolvstanger 36 och 36' Oro dragna genom packboxar 37 och 37' i cylindergaveln. I kolvstangernas 36 och 36' fria andar Oro kedjorna 32 och 32' fasta. Cylindrarna 34 och 34' Oro slutna upptill och nedtill samt i bagge gavlarna forsedda med em regleringsventil 38 och 38'. Dessa regleringsventiler Ora det mojligt att genom andring av arean feu- luftens instrOmning eller utstromning insatta en extra reglering av vikternas lyftnings- och sankningshastighet for uppnaende av den ratta hastigheten vid korrugeringen. Genom de som kolvar utformade vikterna 33 och 33' uppnfis samtidigt en dampnings- och buffertverkan. Cylindrarna 34 och 34' Oro fasta i sugladans gavel 1' genom stravor 35 och 35'. The weights 33 and 33 'Aro are formed as pistons which slide in vertical cylinders 34 and 34' and whose piston rods 36 and 36 'Aro are pulled through stuffing boxes 37 and 37' in the cylinder end. In the free spirits of the piston rods 36 and 36 ', the chains 32 and 32' are fixed. The cylinders 34 and 34 'Controls closed at the top and bottom and in the ram ends provided with a control valve 38 and 38'. These control valves make it possible, by changing the area of the inflow or outflow of the feu air, to insert an additional control of the lifting and lowering speed of the weights in order to achieve the steering speed during the corrugation. Due to the weights 33 and 33 'designed as pistons, a steaming and buffering effect is achieved at the same time. The cylinders 34 and 34 'are fixed in the gable end 1' by pistons 35 and 35 '.

Den elektriska bromsvaxelmotorn 30 styres sa av en. elektrisk kopplingskrets, som samtidigt Oven astadkommer inkoppling efter varandra och stangning av de fore de enskilda sugkamrarna anordnade ventilerna, att motorn forst roterar framat en forutbestamd vinkel och sedan roterar baklanges Over hela vridningsomradet. The electric brake gear motor 30 is then controlled by a. electrical coupling circuit, which at the same time also provides successive connection and closing of the valves arranged in front of the individual suction chambers, that the motor first rotates forward at a predetermined angle and then rotates backwards over the entire range of rotation.

Kopplingskretsen och dess verkningssatt 6— — kommer i det foljande att beskrivas med hanvisning till kopplingsschemat enligt fig. 6. De olika arbetsforlopp, som astadkommas i kopplingskretsens olika lagen, visas i fig. 7. The switching circuit and its actuation 6— - will be described in the following with reference to the wiring diagram according to Fig. 6. The different work processes which are effected in the different laws of the switching circuit are shown in Fig. 7.

Den till natet anslutna kopplingskretsen har en axel 40 med flera kammar 39a, 39b, 39e, 39d, 39e och 39f och drives av en till natet ansIuten, icke visad, liten synkronmotor. Da kopplingskretsen och motorn 30 sta i sitt utgangslage, befinna sig belastningsvikterna 33 och 33' i sitt 'angst ned sankta lage och halla over de utat vridna spannvalsarna 22 och 22' duken 10 stramt spand Over sugladans lock 2. Vid det i fig. 7 visade, forsta arbetsfOrloppet 0 lagges pa duken 10 en plan, farsk fibercementplatta 6, varefter kopplingskretsen sattes igang. Genom kammen 39a slutes den genom kontaktorn 41a gaende stromkretsen, sit att motorn 30 bringas att rotera framat. The coupling circuit connected to the network has a shaft 40 with several cams 39a, 39b, 39e, 39d, 39e and 39f and is driven by a small synchronous motor connected to the network, not shown. When the clutch circuit and the motor 30 are in their initial position, the load weights 33 and 33 'are in their' anxiety 'down low position and hold over the outwardly turned clamping rollers 22 and 22' the cloth 10 tightly spanned over the suction cup lid 2. At the position shown in Fig. 7 shown, the first work cycle 0 is laid on the fabric 10 with a flat, fresh fiber cement plate 6, after which the switching circuit is started. Through the cam 39a, the circuit passing through the contactor 41a is closed, so that the motor 30 is caused to rotate forward.

Under det andra steget I sluter kammen 39b den genom elektroventilen 42 gaende stromkretsen, som ansluter de pa bagge sidor om det mellersta vagberget befintliga sugkamrarna till sugledningen. Harigenom sattas de pit bfigge sidor om hjassan pa den mellersta vagen i locket liggande sugkamrarna under undertryck, sit att. duken 10 med paliggande fibercementplatta 6 under styrd, avsatsvis hojning av vikterna 33, 33' och under stegvis efterdragning av den bOjliga duken 10 fran bada sidor insuges med noggrant reglerad, lag hastighet in i vagdalarna pa de zonremsor pa locket till sugladan, som befinna sig Over de aktuella under vakuum sta.- ende sugkamrarna. Samtidigt fixeras duken med fiberplattan mitt for lockets mellersta vagberg, se arbetsfasen I i fig. 7, emedan under detta vagberg, sasom redan har namnts, finnes en ytterligare sugkammare, som sattes under vakuum separat, eller kan vara forbunden med de angransande bagge sugkamrarna. During the second stage I, the cam 39b closes the circuit passing through the solenoid valve 42, which connects the suction chambers located on the rear sides of the middle rock to the suction line. As a result, the pit on both sides of the head is placed on the suction chambers lying in the middle of the lid under negative pressure. the fabric 10 with the underlying fiber cement plate 6 under controlled, gradually raising the weights 33, 33 'and during stepwise tightening of the flexible fabric 10 from both sides is sucked in with carefully regulated, low speed into the cradle valleys on the zone strips on the lid of the suction box, which are located Over the current suction chambers standing under vacuum. At the same time the cloth is fixed with the fiber plate in front of the middle rocker of the lid, see working phase I in Fig. 7, because under this rocker, as already mentioned, there is an additional suction chamber, which was placed under vacuum separately, or can be connected to the adjacent ram suction chambers.

Da axeln 40 fortsatter att rotera, oppnas det tredje kopplingslaget II de elektroventiler 42a och i det fjarde kopplingslaget III de elektroventiler 42b, som leda till de sugkamrar, som ligga narmast efter de forst under undertryck satta centrala sugkamrarna. As the shaft 40 continues to rotate, the third coupling layer II opens the solenoid valves 42a and in the fourth coupling layer III the solenoid valves 42b, which lead to the suction chambers closest to the first pressurized central suction chambers.

Den harvid skeende korrugeringen visas med arbetsfaserna II och III i fig. 7. The current corrugation is shown with working phases II and III in Fig. 7.

Motorns 30 rotation framat Or harvid avpassad sit efter aktiveringen av de enskilda sugkamrarna efter varandra, att spannvalsar- na 22 och 22' alltid frige sit mycket av duken 10 som erfordras for att dess enskilda ytor med paliggande platta 6 skall kunna sugas in med jamn hastighet i de vagclalar i locket 2, dar undertrycket just bar inkopplats. The rotation of the motor 30 forward Or is adapted after the activation of the individual suction chambers one after the other, that the clamping rollers 22 and 22 'always release much of the cloth 10 required for its individual surfaces with plying plate 6 to be sucked in at a constant speed in the vagclalar in the cover 2, where the negative pressure was just switched on.

Da axeln 40 liar natt det i fig. 6 med IV betecknade laget, fir korrugeringen i flera steg avslutad och kammen 59a bryter de Over alla elektroventilerna 42, 42a och 42b gaende stromkretsarna. Till foljd harav stangas de till de enskilda sugkamrarna fOrande venti- lerna. Samtidigt stoppas aven motorn 30 momentant. Den fardigkorrugerade plattan 6 kan nu lyftas frail den avspanda duken 10. When the shaft 40 lies at night with the layer designated IV in Fig. 6, the corrugation is completed in several steps and the cam 59a breaks the circuits going over all the solenoid valves 42, 42a and 42b. As a result, they are connected to the individual suction chambers leading the valves. At the same time, the motor 30 is also stopped momentarily. The ready-corrugated plate 6 can now be lifted from the relaxed cloth 10.

Sedan plattan 6 har lyfts, roterar axeln 40 ytterligare ett litet stycke vidare och sluter i kopplingslaget V Over kammen 39f en genom kontaktorn 41b gaende stromkrets, varigenom motorn 40 bringas att rotera baklanges. Genom de nu utat, i riktning enligt pilen y i fig. 4, drivna spannvalsarna 22 och 22' spannes duken 10 Over locket 2. DO motorns 30 axel 31 har kommit tillbaka till utgangslaget, ligger duken 10 stramt spand Over locket 2 och kan taga emot nasta fibercementplatta. Motorn 30 stoppas automatiskt, dO axelns 31 baklangesrotation Or avslutad. Forst da nasta platta 6 liar lagts pa den strackta duken 10, inkopplas kopplingskretsen genom en manuellt eller automatiskt utlost stromstallare och upprepas de ovan beskrivna, automatiska kopplings- och arbetsforloppen. After the plate 6 has been lifted, the shaft 40 rotates a further distance and closes in the coupling layer V over the cam 39f a circuit passing through the contactor 41b, whereby the motor 40 is caused to rotate backwards. Through the tensioning rollers 22 and 22 'now driven outwards, in the direction of the arrow y in Fig. 4, the cloth 10 is tensioned over the cover 2. The shaft 31 of the motor 30 has returned to the starting layer, the cloth 10 lies tightly stretched over the lid 2 and can receive nasta fibercement plate. The motor 30 is stopped automatically when the rearward rotation Or of the shaft 31 is completed. Only when the next plate 6 is laid on the stretched fabric 10, the switching circuit is switched on by a manually or automatically triggered switch and the automatic switching and working processes described above are repeated.

I stallet for den som exempel visade och beskrivna, elektriska kopplingskretsen kan man Oven for styrning av korrugeringen anvanda pneumatiska eller hydrauliska anordningar. Instead of the electrical coupling circuit shown and described as an example, pneumatic or hydraulic devices can also be used to control the corrugation.

Vid korrugering av fibercementplattor med sarskilt sma vagor Or det lampligt att driva de i lockets 2 vagberg befintliga valsarna 16 mekaniskt, sit att valsarnas periferihastighet blir lika med den hastighet, med vilken duken 10 drages Korrugeringsforfarandet enligt uppfinningen gor det mOjligt att pa en gang korrugera tva. eller flera Hied tunna, bojliga meilanlagg pa varandra lagda fibercementplattor, varvid det ibland kan vara nOdvandigt och fordelaktigt att arbeta med starkt undertryck. Anlaggningens kapacitet kan okas vasentligt pa detta satt. When corrugating fiber cement slabs with particularly small scales, it is suitable to drive the rollers 16 present in the rocker 2 of the cover 2, mechanically, so that the peripheral speed of the rollers is equal to the speed at which the fabric 10 is drawn. . or several Hied thin, flexible meilanlags on top of each other laid fiber cement slabs, whereby it can sometimes be necessary and advantageous to work with strong negative pressure. The capacity of the plant can be significantly increased in this way.

Forfarandet enligt uppfinningen f6r formning av material i plastiskt tillstand genom sugverkan till kroppar kan fOrutom fOr fram- stallning av korrugerade fibercementplattor med likformiga vagor Oven anvandas fOr framstallning air korrugerade fibercementplat- tor med olikformiga eller oregelbunclna va- gor, exempelvis sit kallade korrugerade dekorationsplattor, liksom Oven for tillverkning av andra produkter, sasom takrannor, vagformstycken, skalar, blomlador av fibercement eller plast. The process according to the invention for forming materials in a plastic state by suction action to bodies can, in addition to producing corrugated fiber cement boards with uniform scales, also be used for making air corrugated fiber cement boards with non-uniform or irregularly curved corrugated sheets, for example cold decorative corrugated sheets, for example Above for the manufacture of other products, such as gutters, waders, shells, fibrous or plastic flower beds.

Forfarandet kan Oven tillampas vid korrugering eller formning av foremal av annat material On fibercementmassa, exempelvis ay termoplaster, sit lange som plasten befinner sig i formbart tillstand. The method can also be applied when corrugating or forming molds of other material.

Claims

Patent claim:

1. Set to corrugate ready-made, fresh fiber-cement slabs with a suction-shaped molding part, using a resilient over the molded part spanded, flexible cloth, on which the fibrous cement plate is laid and on which during the corrugation it is made to adhere to the wavy shape of the molded part. upper side, may be characterized by the fact that on an air-permeable, under the whole corrugation under the influence of air strong, transversely acting tensile forces, the cloth of fabric or similar laid fiber cement plate is sucked against the rigid sugladans with suction-provided, profiled lids preferably in the middle of the plate. that the sides insert suction effect.

2. According to patent claim 1, it can be characterized in that the suction action first forms a first tag in the central zone of the plate and that then two further waves are always formed on the rear sides of the central zone at the same time.

3. Set according to patent claim 1 or 2, characterized in that each individual wave is formed under a weak vacuum, about Vo, and that then a strong vacuum, about 80%, is caused to act on the rock valley zone.

Device for carrying out the set according to patent claim 1 with a suction cup, the rigid, corrugated surface of which deflects lids is provided with several suction halls and provided with a flexible, air-permeable cloth of fabric or the like, characterized in that the suction cup (1) is divided on several longitudinal, longitudinal, individual suction chambers (5) corresponding to the number of waves in the suction cap (2), which are connected to a common suction line (8, 8 ') and provided with check valves (9) for the successively continuous, stepwise entry of the suction chambers , and that Over sugladelocket the air-permeable, thin, flexible cloth (10), for example a simple layer of fabric made of traction-resistant synthetic or synthetic fibers, Hiles spanded resiliently by load weights (12).

Device according to claim 4 for carrying out the set according to claim 3, characterized in that separate channels (20) are formed below the vagal valley zones of the suction lid (2), which after generating a slight negative pressure in the chambers surrounding the channels (5). ) continued under stronger negative pressure.

Device according to patent claim 4, characterized in that the hairy areas on the rock of the suction lid (2) are closed without suction.

Device according to claims 4 and 6, characterized in that the hairy areas at the rock of the suction lid (2) are formed by rollers (16), to which the sheaths cover the grain-plating plate sections (2 ') while leaving the entire lid (2). continuous, narrow suction slots (17).

Device according to patent claims 4, 6 and 7, characterized in that the rollers (16) are rotatably mounted.

Device according to claim 4-8, characterized in that the intermediate suction chambers (5) separating the individual suction chambers (5) end below the rotatable rollers (16) under the rotatable rollers (16) and on both sides of the upper section of each intermediate-4: 4g (4) are two rubber strips (18) fastened, which abut against the jacket on the roller (16) arranged above each other, two adjacent suction chambers facing each other.

Device according to claim 4, characterized in that the load weights for tensioning the fabric (10) are variable and preferably consist of metal rods (12) interchangeably arranged along the ridge longitudinal edges of the fabric.

Device according to claim 4 or 10, characterized by a mechanism for sparring the raised weights in the raised layer, which acts on the weights, then the entire plate (6). is corrugated.

Device according to claim 4, characterized in that the fabric (10) with its side edges is fixed in rotatable rollers (22, 22 ') and that it is forced to rotate the rollers towards each other against the action of part by weight loading (33, 33') A torque acting on them is provided by an electric brake gear motor (30), which is controlled by a successive connection of the individual suction chambers, an electric or pressure medium driven device (the electric coupling circuit 40, 39a-39f) so that the load weights (33, 83 ') is slowly raised according to the filling of the sections of the sugared lid placed under vacuum under the influence of vacuum with the required zone widths of the cloth (10), and that the rollers, after lifting off the finished corrugated plate (6), are reassembled by the brake gear motor (30) to the starting team.

Device according to claim 12, characterized in that the shaft (26), seated, driving sprocket (25, 25 ') driven on a common, over a chain transmission (29, 28, 27) by the electric brake gear motor (30) in diametrically opposite places there are articulated fixed chains (32, 32 '), through which the clamping rollers (22, 22') standing under the influence of the weights (33, 33 ') are caused to rotate forcibly against each other to tension the fabric (10) and compulsively out for stretching the cloth.

Device according to patent claims 12 and 13, characterized in that the load weights (33, 33 ') are suspended in the sprockets (24, 24') of the over-span sections (24, 24 ') required in the air chains. (32, 32 ').

Device according to claim 1214, characterized in that the loading weights (33, 33 ') consist of pistons sliding in cylinders (34, 34'), in which piston rods (36, 36 ') the chains (32, 32') are fixed, and that the cylinders closed at the top and bottom are provided with control valves (38, 38 ') for setting the lifting and lowering speed of the weights by changing the inflow and outflow area of the air. Request publications: