EP0568718A1 - Process and apparatus for making profiled products by controlling the speed during depositing a sheet of material on a former - Google Patents

Process and apparatus for making profiled products by controlling the speed during depositing a sheet of material on a former Download PDF

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Publication number
EP0568718A1
EP0568718A1 EP92107706A EP92107706A EP0568718A1 EP 0568718 A1 EP0568718 A1 EP 0568718A1 EP 92107706 A EP92107706 A EP 92107706A EP 92107706 A EP92107706 A EP 92107706A EP 0568718 A1 EP0568718 A1 EP 0568718A1
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EP
European Patent Office
Prior art keywords
belt
material web
bed
shooting
profile
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP92107706A
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German (de)
French (fr)
Inventor
Albert Heinzmann
Gerhard Rothweiler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schmidt und Heinzmann GmbH and Co KG
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Schmidt und Heinzmann GmbH and Co KG
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Publication date
Application filed by Schmidt und Heinzmann GmbH and Co KG filed Critical Schmidt und Heinzmann GmbH and Co KG
Publication of EP0568718A1 publication Critical patent/EP0568718A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0205—Feeding the unshaped material to moulds or apparatus for producing shaped articles supplied to the moulding device in form of a coherent mass of material, e.g. a lump or an already partially preshaped tablet, pastil or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
    • B28B1/528—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement for producing corrugated sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/027—Feeding the moulding material in measured quantities from a container or silo by using a removable belt or conveyor transferring the moulding material to the moulding cavities

Definitions

  • the invention relates to a device for the production of profiled moldings, in particular corrugated sheets, by machine molding a material web section from a moldable hardening mass with a bed which has a formwork surface which forms a negative of the profile, and with a belt conveyor or the like which connects the material web section to the bed to be molded into it.
  • a conveyor belt of the device is a shooting belt that deposits a material web section made of a fiber-reinforced, hydraulically setting mass resting on a separating film in one movement parallel to the axial direction of the corrugation on the shaft crests of a shaped plate. Then will the material web section is pressed into the corrugation troughs of the shaped sheet with a stamp-like molding tool and is thereby drawn at least in sections over the shaped sheet.
  • the still sticky mass can adhere to the stamp-like molding tool.
  • the roughness of the plate surface machined with the molding tool is thereby undesirably increased, and there is contamination of the molding tool, which can be mastered according to DE-OS 38 20 495, but only with some outlay on equipment.
  • the object of the invention is to provide an apparatus of the type mentioned which is inexpensive in terms of apparatus and can be used for a wide variety of cross-sectional profiles of molded articles and with which material web sections can be molded into a bed without contact by a molding tool with 100% dimensional accuracy, in particular exact parallelism of the outer boundary surfaces, and high surface quality to let.
  • the profiled shaped bodies produced according to the invention are essentially two-dimensionally curved shaped bodies which have a profile which remains essentially unchanged in the longitudinal direction.
  • the longitudinal direction is the axial direction of the profile, and the transverse direction of the insertion movement in the bed is oriented perpendicular thereto.
  • the material web section is inserted into the bed without warping, without wrinkling and without slipping of the material web section on the formwork surface. In this way, optimum shape accuracy is achieved without straining the inner bond of the material web section.
  • the belt conveyor of the device according to the invention is a shooting belt which operates in the transverse direction of the molded body at a speed which is controlled as a function of the profile.
  • the belt running speed of the shooting belt and / or the forward or return speed of the shooting belt roller arrangement can be controlled depending on the profile. If, as preferred, the bed is stationary when it is inserted, the profile-dependent control of one of the two sizes is mandatory.
  • the belt conveyor has a conventional structure, i. H. a roller arrangement with stationary roller axes at the end at which the insertion of the material web section into the bed takes place.
  • the bed can be moved relative to the belt conveyor in the transverse direction of the molded body.
  • the belt running speed of the belt conveyor and / or the travel speed of the bed are controlled depending on the profile. The speed control of one of these variables is mandatory.
  • a belt conveyor can be assigned to the belt conveyor, to which material web sections are transferred from a continuously operating plate machine by means of an acceleration belt, with which the shooting belt runs synchronously in the same direction during the transfer of a material web section.
  • the belt running direction of the belt conveyor is preferably oriented perpendicular to that of the shooting belt, and the belt of the belt conveyor is at rest during the transfer of the material web section from the shooting belt.
  • the belt conveyor itself can be a shooting belt; the device then has two shooting belts working perpendicular to one another.
  • the deflection of the plate transport direction by 90 ° when the material web section is formed into the bed is particularly advantageous for elongated shaped bodies with profile extension and main reinforcement in the longitudinal direction, the width of which is determined by the working width of the panel machine.
  • material web sections are to be formed which consist of a non-hardened, fiber-reinforced, hydraulically setting mass resting on a separating film.
  • the fiber reinforcement preferably consists of fiber bundles and / or short fibers that are continuous in the longitudinal direction of the profile. Moldings made of plastic with or without fiber reinforcement can also be produced.
  • the system according to FIGS. 1 and 2 is used to produce corrugated sheets from cut, flat material web sections 10 which are rectangular in plan and which, lying on a belt, come from a plate machine 12 which operates continuously at a speed of 5 to 10 meters per minute.
  • the material web sections 10 consist of an uncured cement-bound mass which is reinforced with alkali-resistant glass fibers in the form of fiber bundles and short fibers.
  • the fiber bundles extend in the direction of ejection of the plate machine, ie in the longitudinal direction of the profile of the corrugated plates to be produced, and they go through the length of a material web section 10.
  • the mass lies on a water-impermeable separating film made of plastic which extends over the surface of the material web section 10.
  • the material web section 10 is transferred to an acceleration belt 14 running in the same height and direction, the transport speed of which corresponds to that of the belt of the plate machine 12 during the transfer. After the handover, the transport speed is steadily increased to approx. 30 meters per minute.
  • the acceleration belt 14 is followed by a first shooting belt 16 running in the same height and direction, which runs when the material web section 10 is transferred at a speed corresponding to the end speed of the acceleration belt 14.
  • the first shooting belt 16 transports the material web section 10 onto a second shooting belt 18, the running direction of which is directed transversely to that of the first shooting belt 16.
  • the second shooting belt 18 serves to transport the material web section 10 into a forming station 20 and to insert it there into a shaped plate 22 with a speed-controlled movement.
  • the first conveyor belt 16 has a front roller which can be moved horizontally in the direction of transport of the incoming material web sections 10 and which extends over the full width of the second conveyor belt 18.
  • a band length compensation is provided for the increasing horizontal barrel length of the first shooting belt 16.
  • the forward movement of the front roller is synchronized with the belt running speed of the first shooting belt 16 in such a way that the material web section 10 is transported to the side edge of the second shooting belt 18 and is braked there to a standstill.
  • the front roller then moves back at a speed that corresponds exactly to the belt running speed of the first shooting belt 16.
  • the shooting belt 16 thus unwinds under the material web section 10, which is placed on the second shooting belt 18 which is at rest. After completion of this process, the second shooting belt 18 starts to form the material web section 10 into a shaped plate 22.
  • the shaped sheets 22 have a corrugation which corresponds to that of the corrugated sheet to be produced. They come from a magazine that is located to the side of the forming station 20. The lowest of a stack of shaped sheets 22 is separated by means of a lever mechanism and transported into the forming station 20 with two chains running over a substructure.
  • the movement of the shaped plates 22 takes place parallel to the transport direction of the incoming material web sections 10, which corresponds to the axial direction of the corrugation.
  • a shaped plate 22 loaded with a plate molded therein is transported to the tray.
  • the shaped plates 22 have a width which corresponds to the lead length of the second shooting belt 18.
  • the second shooting belt 18 has a horizontally movable front roller 24, which enters the molding station 20 above an empty molding plate 22.
  • a band length compensation is provided for the increasing horizontal barrel length of the shooting belt 18.
  • the forward movement of the front roller 22 is synchronized with the belt running speed of the shooting belt 18 in such a way that the material web section 10 is transported in a controlled manner to a well-defined profile point in the lateral edge region of the shaped plate 22 and is braked to a standstill there. There is then a return movement of the front roller 24 and unwinding movement of the shooting belt 18, through which the material web section 10 comes free from the shooting belt 18 and is inserted into the shaped plate 22.
  • the shooting belt 18 operates at a speed which is controlled in accordance with the wave profile, such that during the movement of the shooting belt 18 over the molding plate 22 a web length of the material web section 10 corresponding to the swept profile length is released from the shooting belt 18 and lies completely over the molding plate 22.
  • the molding plate 22 is preferably stationary in this process, and the belt travel speed and / or return speed of the front roller 24 of the shooting belt 18 is controlled accordingly. In the case of a stationary shaped plate 22, a profile-dependent speed control of one of these two movement components is required.
  • the exact alignment of the shaped plate 22 with the axial direction of the corrugation transverse to the working direction of the shooting belt 18 is essential.
  • the material web sections 10 consist of a non-hardened cement-bound mass, which is reinforced with alkali-resistant glass fibers in the form of short fibers.
  • the mass lies on a water-impermeable separating film made of plastic, which is continuous over the surface of the material web section.
  • the material web section 10 is transferred to an acceleration belt 14 running in the same height and direction, the transport speed of which during the transfer of the belt of the plate machine 12 corresponds. After delivery, the transport speed is increased continuously.
  • the acceleration belt 14 is followed by a shooting belt 26 running in the same height and direction, which runs when the material web section 10 is transferred at a speed corresponding to the final speed of the acceleration belt 14.
  • the shooting belt 26 places the material web section in the manner described above in a shaped plate 28 which is located on the side of the shooting belt 26 facing away from the acceleration belt 14.
  • the corrugation of the shaped plate 28 is oriented transversely to the running direction of the plate machine 12, the acceleration belt 14 and the shooting belt 26.
  • the material web section 10 sinks into the shaped plate 22, 28 solely because of its own weight in such a way that it completely fills it. If necessary, this process can be supported by shaking or shocking the shaped plate 22, 28.

Abstract

The material web section (10) consisting of a mouldable, curable composition is transferred, by means of a belt conveyor or similar, to a bed having a formwork surface forming a negative of the profile. The belt of the belt conveyor travels in the transverse direction of the profile. The bed is covered, following the profiling, with the material web section (10) for which purpose a relative transverse movement of belt conveyor and bed and/or the belt travel velocity of the belt conveyor are controlled corresponding to the development of the profile. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zur Herstellung von profilierten Formkörpern, insbesonder Wellplatten, durch maschinelles Formen eines Materialbahnabschnitts aus einer formbaren aushärtenden Masse mit einem Bett, das eine ein Negativ des Profils bildende Schalungsfläche hat, und mit einem Bandförderer oder ähnlichem, der den Materialbahnabschnitt dem Bett zum Einformen darin übergibt.The invention relates to a device for the production of profiled moldings, in particular corrugated sheets, by machine molding a material web section from a moldable hardening mass with a bed which has a formwork surface which forms a negative of the profile, and with a belt conveyor or the like which connects the material web section to the bed to be molded into it.

Eine derartige Vorrichtung ist aus der DE-OS 38 20 495 bekannt. Per Bandförderer der Vorrichtung ist ein Schießband, das einen Materialbahnabschnitt aus einer auf einer Trennfolie aufliegenden, faserbewehrten hydraulisch abbindenden Masse in einer Bewegung parallel zur Achsrichtung der Wellung auf die Wellenkuppen eines Formblechs ablegt. Anschließend wird der Materialbahnabschnitt mit einem stempelartigen Formwerkzeug in die Wellentäler des Formblechs eingedrückt und dabei zumindest abschnittsweise über das Formblech gezogen.Such a device is known from DE-OS 38 20 495. A conveyor belt of the device is a shooting belt that deposits a material web section made of a fiber-reinforced, hydraulically setting mass resting on a separating film in one movement parallel to the axial direction of the corrugation on the shaft crests of a shaped plate. Then will the material web section is pressed into the corrugation troughs of the shaped sheet with a stamp-like molding tool and is thereby drawn at least in sections over the shaped sheet.

Bei dem Einformen des Materialbahnabschnitts kann die noch klebrige Masse an dem stempelartigen Formwerkzeug haften bleiben. Die Rauhigkeit der mit dem Formwerkzeug bearbeiteten Plattenoberfläche wird dadurch in unerwünschter Weise erhöht, und es tritt eine Verschmutsung des Formwerkzeugs ein, die nach der DE-OS 38 20 495 durchaus zu beherrschen ist, doch nur mit einigem apparativen Aufwand.When the material web section is molded in, the still sticky mass can adhere to the stamp-like molding tool. The roughness of the plate surface machined with the molding tool is thereby undesirably increased, and there is contamination of the molding tool, which can be mastered according to DE-OS 38 20 495, but only with some outlay on equipment.

Aufgabe der Erfindung ist es, eine apparativ unaufwendige, für verschiedenste Querschnittsprofile von Formkörpern verwendbare Vorrichtung der genannten Art zu schaffen, mit der sich Materialbahnabschnitte ohne Berührung durch ein Formwerkzeug mit hundertprozentiger Formgenauigkeit, insbesondere exakter Parallelität der äußeren Begrenzungsflächen, und hoher Oberflächengüte in ein Bett einformen lassen.The object of the invention is to provide an apparatus of the type mentioned which is inexpensive in terms of apparatus and can be used for a wide variety of cross-sectional profiles of molded articles and with which material web sections can be molded into a bed without contact by a molding tool with 100% dimensional accuracy, in particular exact parallelism of the outer boundary surfaces, and high surface quality to let.

Diese Aufgabe wird mit einer Vorrichtung der genannten Art dadurch gelöst, daß das Band des Bandförderers in Querrichtung des Profils läuft, und daß das Bett der Profilierung folgend mit dem Materialbahnabschnitt belegbar ist, wozu eine relative Querbewegung von Bandförderer und Bett und/oder die Bandlaufgeschwindigkeit des Bandförderers der Abwicklung des Profils entsprechend steuerbar sind.This object is achieved with a device of the type mentioned in that the belt of the belt conveyor runs in the transverse direction of the profile, and that the bed following the profiling can be occupied with the material web section, for which purpose a relative transverse movement of the belt conveyor and bed and / or the belt running speed of the Belt conveyor of the processing of the profile can be controlled accordingly.

Bei den erfindungsgemäß hergestellten profilierten Formkörpern handelt es sich um im wesentlichen zweidimensional gekrümmte Formkörper, die ein in Längsrichtung im wesentlichen unverändert bleibendes Profil haben. Die Längsrichtung ist die Achsrichtung des Profils, und die Querrichtung der Einlegebewegung in das Bett dazu senkrecht orientiert. Eine Krümmung des Formkörpers in der dritten Dimension, d. h. senkrecht zu der von Längs- und Querrichtung aufgespannten Hauptebene, beispielsweise über einen Bogen von 5 bis 10°, ist ebenso möglich wie eine nicht zu große Abweichung von der Profilkonstanz in Längsrichtung des Formkörpers. Dank der erfindungsgemäßen Steuerung der relativen Querbewegung von Bandförderer und Bett bzw. der Bandlaufgeschwindigkeit des Bandförderers entsprechnd der Abwicklung des Profils erfolgt ein Einlegen des Materialbahnabschnitts in das Bett ohne Verziehen, ohne Faltenbildung und ohne Verrutschen des Materialbahnabschnitts auf der Schalungsfläche. Man erreicht so eine optimale Formgenauigkeit, ohne den inneren Verbund des Materialbahnabschnitts zu belasten.The profiled shaped bodies produced according to the invention are essentially two-dimensionally curved shaped bodies which have a profile which remains essentially unchanged in the longitudinal direction. The longitudinal direction is the axial direction of the profile, and the transverse direction of the insertion movement in the bed is oriented perpendicular thereto. A curvature of the molded body in the third dimension, i. H. perpendicular to the main plane spanned by the longitudinal and transverse directions, for example over an arc of 5 to 10 °, is just as possible as a not too great deviation from the profile constancy in the longitudinal direction of the shaped body. Thanks to the control according to the invention of the relative transverse movement of the belt conveyor and bed or the belt running speed of the belt conveyor corresponding to the processing of the profile, the material web section is inserted into the bed without warping, without wrinkling and without slipping of the material web section on the formwork surface. In this way, optimum shape accuracy is achieved without straining the inner bond of the material web section.

In einer ersten Ausführungsvariante ist der Bandförderer der erfindungsgemäßen Vorrichtung ein in Querrichtung des Formkörpers mit profilabhängig gesteuerter Geschwindigkeit arbeitendes Schießband.In a first embodiment variant, the belt conveyor of the device according to the invention is a shooting belt which operates in the transverse direction of the molded body at a speed which is controlled as a function of the profile.

Es können die Bandlaufgeschwindigkeit des Schießbands und/oder die Vor- bzw. Rücklaufgeschwindigkeit der Schießbandwalzenanordnung profilabhängig gesteuert werden. Wenn, wie bevorzugt, das Bett beim Einlegen stationär ist, ist die profilabhängige Steuerung einer der beiden Größen zwingend.The belt running speed of the shooting belt and / or the forward or return speed of the shooting belt roller arrangement can be controlled depending on the profile. If, as preferred, the bed is stationary when it is inserted, the profile-dependent control of one of the two sizes is mandatory.

In einer zweiten Variante der erfindungsgemäßen Vorrichtung hat der Bandförderer einen konventionellen Aufbau, d. h. eine Walzenanordnung mit stationären Walzenachsen an dem Ende, an dem das Einlegen des Materialbahnabschnitts in das Bett erfolgt. Das Bett läßt sich relativ zum Bandförderer in Querrichtung des Formkörpers verfahren. Es werden die Bandlaufgeschwindigkeit des Bandförderers und/oder die Verfahrgeschwindigkeit des Betts profilabhängig gesteuert. Die Geschwindigkeitssteuerung einer dieser Größen ist zwingend.In a second variant of the device according to the invention, the belt conveyor has a conventional structure, i. H. a roller arrangement with stationary roller axes at the end at which the insertion of the material web section into the bed takes place. The bed can be moved relative to the belt conveyor in the transverse direction of the molded body. The belt running speed of the belt conveyor and / or the travel speed of the bed are controlled depending on the profile. The speed control of one of these variables is mandatory.

Dem Bandförderer kann ein Schießband zugeordnet sein, dem Materialbahnabschnitte aus einer kontinuierlich arbeitenden Plattenmaschine mittels eines Beschleunigungsbands überstellt werden, mit dem das Schießband während der Übergabe eines Materialbahnabschnitts in gleicher Richtung synchron läuft. Die Bandlaufrichtung des Bandförderers ist vorzugsweise senkrecht zu der des Schießbands orientiert, und es befindet sich das Band des Bandförderers während der Übergabe des Materialbahnabschnitts von dem Schießband in Ruhe. Es sei daran erinnert, daß nach der ersten Ausführungsvariante der Bandförderer selbst ein Schießband sein kann; die Vorrichtung weist dann also zwei senkrecht zueinander arbeitende Schießbänder auf. Die Umlenkung der Plattentransportrichtung um 90° beim Einformen des Materialbahnabschnitts in das Bett ist besonders vorteilhaft für längliche Formkörper mit Profilerstreckung und Hauptbewehrung in Längsrichtung, deren Breite durch die Arbeitsbreite der Plattenmaschine bestimmt ist.A belt conveyor can be assigned to the belt conveyor, to which material web sections are transferred from a continuously operating plate machine by means of an acceleration belt, with which the shooting belt runs synchronously in the same direction during the transfer of a material web section. The belt running direction of the belt conveyor is preferably oriented perpendicular to that of the shooting belt, and the belt of the belt conveyor is at rest during the transfer of the material web section from the shooting belt. It should be remembered that, according to the first embodiment, the belt conveyor itself can be a shooting belt; the device then has two shooting belts working perpendicular to one another. The deflection of the plate transport direction by 90 ° when the material web section is formed into the bed is particularly advantageous for elongated shaped bodies with profile extension and main reinforcement in the longitudinal direction, the width of which is determined by the working width of the panel machine.

Es besteht aber auch die Möglichkeit, Materialbahnabschnitte aus einer kontinuierlich arbeitenden Plattenmaschine mittels eines Beschleunigungsbands unmittelbar dem Bandförderer zu überstellen, der während der Übergabe eines Materialbahnabschnitts in gleicher Richtung synchron mit dem Beschleunigungsband läuft. Die Laufrichtung des Bahnförderers beim Einformen des Materialbahnabschnitts in das Bett entspricht dann der der Plattenmaschine und des Beschleunigungsbands, und man kommt in apparativ unaufwendiger Weise ohne Umlenkung der Plattentransportrichtung aus. Es lassen sich so Profilkörper von praktisch beliebiger Querabmessung herstellen, deren Profillänge durch die Arbeitsbreite der Plattenmaschine bestimmt ist.However, there is also the possibility of transferring material web sections from a continuously operating plate machine directly to the belt conveyor by means of an acceleration belt, which runs synchronously with the acceleration belt during the transfer of a material web section. The direction of travel of the web conveyor when the material web section is formed into the bed then corresponds to that of the plate machine and the acceleration belt, and one does not need to redirect the plate transport direction in an apparatus-intensive manner. Profile bodies of practically any transverse dimension can thus be produced, the profile length of which is determined by the working width of the plate machine.

Normalerweise genügt es, den Materialbahnabschnitt allein durch sein Eigengewicht in das Bett einsinken zu lassen, um sicherzustellen, daß die Hohlräume des Betts vollständig ausgefüllt sind. Insbesondere bei komplizierten oder Feinstrukturen aufweisenden Profilen ist es aber empfehlenswert, das Bett zu rütteln und/oder zu schocken, während der Materialbahnabschnitt darin eingelegt wird. Die Absenkbewegung des Materialbahnabschnitts in das Bett wird so unterstützt.It is usually sufficient to let the material web section sink into the bed by its own weight to ensure that the cavities in the bed are completely filled. In the case of profiles which are complicated or have fine structures, however, it is advisable to shake and / or shock the bed while the material web section is inserted therein. The lowering movement of the material web section into the bed is thus supported.

Mit der erfindungsgemäßen Vorrichtung sollen insbesondere Materialbahnabschnitte geformt werden, die aus einer auf einer Trennfolie aufliegenden, nicht ausgehärteten faserbewehrten hydraulisch abbindenden Masse bestehen. Die Faserbewehrung besteht vorzugsweise aus in Profillängsrichtung durchgehenden Faserbündeln und/oder Kurzfasern. Es können aber auch Formkörper aus Kunststoff mit oder ohne Faserbewehrung hergestellt werden.With the device according to the invention, in particular material web sections are to be formed which consist of a non-hardened, fiber-reinforced, hydraulically setting mass resting on a separating film. The fiber reinforcement preferably consists of fiber bundles and / or short fibers that are continuous in the longitudinal direction of the profile. Moldings made of plastic with or without fiber reinforcement can also be produced.

Die Erfindung wird im folgenden anhand zweier in den Zeichnungen dargestellter Ausführungsbeispiele näher erläutert. Es zeigen:

Fig. 1
die schematische Draufsicht auf eine erste Anlage zur Formung von Wellplatten aus ebenen Materialbahnabschnitten;
Fig. 2
eine Vorderansicht der Anlage mit Blick in Richtung II von Fig. 1, und
Fig. 3
die schematische Draufsicht auf eine zweite Anlage zur Formung von Wellplatten aus ebenen Materialbahnabschnitten.
The invention is explained in more detail below with reference to two exemplary embodiments shown in the drawings. Show it:
Fig. 1
the schematic plan view of a first system for forming corrugated sheets from flat material web sections;
Fig. 2
a front view of the system with a view towards II of Fig. 1, and
Fig. 3
the schematic plan view of a second system for forming corrugated sheets from flat material web sections.

Die Anlage gemäß Fig. 1 und 2 dient zur Herstellung von Wellplatten aus geschnittenen, im Grundriß rechteckigen ebenen Materialbahnabschnitten 10, die auf einem Band liegend aus einer kontinuierlich mit einer Geschwindigkeit von 5 bis 10 Meter pro Minute arbeitenden Plattenmaschine 12 kommen.The system according to FIGS. 1 and 2 is used to produce corrugated sheets from cut, flat material web sections 10 which are rectangular in plan and which, lying on a belt, come from a plate machine 12 which operates continuously at a speed of 5 to 10 meters per minute.

Die Materialbahnabschnitte 10 bestehen aus einer nicht ausgehärteten zementgebundenen Masse, die mit alkaliwiderstandsfähigen Glasfasern in Form von Faserbündeln und Kurzfasern bewehrt ist. Die Faserbündel erstrecken sich in Ausstoßrichtung der Plattenmaschine, d. h. in Profillängsrichtung der herzustellenden Wellplatten, und sie gehen über die Länge eines Materialbahnabschnitts 10 durch. Die Masse liegt auf einer über die Fläche des Materialbahnabschnitts 10 sich erstreckenden, wasserundurchlässigen Trennfolie aus Kunststoff auf. Am Ende der Plattenmaschine 12 wird der Materialbahnabschnitt 10 auf ein in gleicher Höhe und Richtung laufendes Beschleunigungsband 14 übergeben, dessen Transportgeschwindigkeit während der Übergabe der des Bands der Plattenmaschine 12 entspricht. Nach erfolgter Übergabe wird die Transportgeschwindigkeit stetig auf ca. 30 Meter pro Minute erhöht. An das Beschleunigungsband 14 schließt sich ein in gieicher Höhe und Richtung laufendes erstes Schießband 16 an, das bei der Übergabe des Materialbahnabschnitts 10 mit einer der Endgeschwindigkeit des Beschleunigungsbands 14 entsprechenden Geschwindigkeit läuft. Das erste Schießband 16 transportiert den Materialbahnabschnitt 10 auf ein zweites Schießband 18, dessen Laufrichtung quer zu der des ersten Schießbands 16 gerichtet ist. Das zweite Schießband 18 dient dazu, den Materialbahnabschnitt 10 in eine Formstation 20 zu transportieren und dort mit einer geschwindigkeitsgesteuerten Bewegung in ein Formblech 22 einzulegen.The material web sections 10 consist of an uncured cement-bound mass which is reinforced with alkali-resistant glass fibers in the form of fiber bundles and short fibers. The fiber bundles extend in the direction of ejection of the plate machine, ie in the longitudinal direction of the profile of the corrugated plates to be produced, and they go through the length of a material web section 10. The mass lies on a water-impermeable separating film made of plastic which extends over the surface of the material web section 10. At the end of the plate machine 12, the material web section 10 is transferred to an acceleration belt 14 running in the same height and direction, the transport speed of which corresponds to that of the belt of the plate machine 12 during the transfer. After the handover, the transport speed is steadily increased to approx. 30 meters per minute. The acceleration belt 14 is followed by a first shooting belt 16 running in the same height and direction, which runs when the material web section 10 is transferred at a speed corresponding to the end speed of the acceleration belt 14. The first shooting belt 16 transports the material web section 10 onto a second shooting belt 18, the running direction of which is directed transversely to that of the first shooting belt 16. The second shooting belt 18 serves to transport the material web section 10 into a forming station 20 and to insert it there into a shaped plate 22 with a speed-controlled movement.

Bei der Übergabe des Materialbahnabschnitts 10 von dem ersten Schießband 16 auf das zweite Schießband 18 befindet sich das letztere in Ruhe. Das erste Schießband 16 hat eine in Transportrichtung der ankommenden Materialbahnabschnitte 10 horizontal verfahrbare Frontrolle, die oberhalb des zweiten Schießbands 18 uber dessen volle Breite vorfährt. Fur die sich dabei vergrößernde horizontale Lauflänge des ersten Schießbands 16 ist ein Bandlängenausgleich vorhanden. Die Vorlaufbewegung der Frontrolle ist so mit der Bandlaufgeschwindigkeit des ersten Schießbands 16 synchronisiert, daß der Materialbahnabschnitt 10 an den seitlichen Rand des zweiten Schießbands 18 transportiert und dort zum Stillstand abgebremst wird. Es erfolgt dann eine Rücklaufbewegung der Frontrolle mit einer Geschwindigkeit, die genau der Bandlaufgeschwindigkeit des ersten Schießbands 16 entspricht. Das Schießband 16 wickelt sich so unter dem Materialbahnabschnitt 10 ab, der dabei auf das in Ruhe befindliche zweite Schießband 18 abgelegt wird. Nach Beendigung dieses Vorgangs läuft das zweite Schießband 18 an, um den Materialbahnabschnitt 10 in ein Formblech 22 einzuformen.When the material web section 10 is transferred from the first shooting belt 16 to the second shooting belt 18, the latter is at rest. The first conveyor belt 16 has a front roller which can be moved horizontally in the direction of transport of the incoming material web sections 10 and which extends over the full width of the second conveyor belt 18. A band length compensation is provided for the increasing horizontal barrel length of the first shooting belt 16. The forward movement of the front roller is synchronized with the belt running speed of the first shooting belt 16 in such a way that the material web section 10 is transported to the side edge of the second shooting belt 18 and is braked there to a standstill. The front roller then moves back at a speed that corresponds exactly to the belt running speed of the first shooting belt 16. The shooting belt 16 thus unwinds under the material web section 10, which is placed on the second shooting belt 18 which is at rest. After completion of this process, the second shooting belt 18 starts to form the material web section 10 into a shaped plate 22.

Die Formbleche 22 haben eine Wellung, die der der herzustellenden Wellplatte entspricht. Sie kommen aus einem Magazin, das sich seitlich neben der Formstation 20 befindet. Von einem Stapel Formbleche 22 wird mittels eines Hebelmechanismus jeweils das unterste vereinzelt und mit zwei über einen Unterbau laufenden Ketten in die Formstation 20 transportiert.The shaped sheets 22 have a corrugation which corresponds to that of the corrugated sheet to be produced. They come from a magazine that is located to the side of the forming station 20. The lowest of a stack of shaped sheets 22 is separated by means of a lever mechanism and transported into the forming station 20 with two chains running over a substructure.

Die Bewegung der Formbleche 22 erfolgt dabei parallel zu der Transportrichtung der ankommenden Materialbahnabschnitte 10, die der Achsrichtung der Wellung entspricht. Auf der anderen Seite der Formstation 20 befindet sich eine Ablage, bis zu der die Ketten laufen. Zugleich mit dem Einfahren eines leeren Formblechs 20 in die Formstation 18 erfolgt der Abtransport eines mit einer darin eingeformten Platte beschickten Formblechs 22 auf die Ablage.The movement of the shaped plates 22 takes place parallel to the transport direction of the incoming material web sections 10, which corresponds to the axial direction of the corrugation. On the other side of the forming station 20 there is a shelf to which the chains run. Simultaneously with the insertion of an empty shaped plate 20 into the forming station 18, a shaped plate 22 loaded with a plate molded therein is transported to the tray.

Die Formbleche 22 haben eine Breite, der die Vorlauflänge des zweiten Schießbands 18 entspricht. Das zweite Schießband 18 hat eine horizontal verfahrbare Frontrolle 24, die oberhalb eines leeren Formblechs 22 in die Formstation 20 einfährt. Für die sich dabei vergrößernde horizontale Lauflänge des Schießbands 18 ist ein Bandlängenausgleich vorhanden. Die Vorlaufbewegung der Frontrolle 22 ist so mit der Bandlaufgeschwindigkeit des Schießbands 18 synchronisiert, daß der Materialbahnabschnitt 10 millimetergenau gesteuert an einen wohldefinierten Profilpunkt im seitlichen Randbereich des Formblechs 22 transportiert und dort zum Stillstand abgebremst wird. Es erfolgt dann eine Rücklaufbewegung der Frontrolle 24 und Abwickelbewegung des Schießbands 18, durch die der Materialbahnabschnitt 10 von dem Schießband 18 freikommt und in das Formblech 22 eingelegt wird. Das Schießband 18 arbeitet dabei mit einer Geschwindigkeit, die dem Wellenprofil entsprechend gesteuert ist, derart, daß bei der Bewegung des Schießbands 18 über das Formblech 22 eine der überstrichenen Profillänge entsprechende Bahnlänge des Materialbahnabschnitts 10 von dem Schießband 18 freikommt und sich vollflächig in das Formblech 22 legt. Das Formblech 22 ist bei diesem Vorgang vorzugsweise stationär, und die Bandlaufgeschwindigkeit und/oder Rücklaufgeschwindigkeit der Frontrolle 24 des Schießbands 18 entsprechend gesteuert. Bei stationärem Formblech 22 ist eine profilabhängige Geschwindigkeitssteuerung einer dieser beiden Bewegungskomponenten erforderlich. Wesentlich ist die exakte Ausrichtung des Formblechs 22 mit der Achsrichtung der Wellung quer zu der Arbeitsrichtung des Schießbands 18.The shaped plates 22 have a width which corresponds to the lead length of the second shooting belt 18. The second shooting belt 18 has a horizontally movable front roller 24, which enters the molding station 20 above an empty molding plate 22. A band length compensation is provided for the increasing horizontal barrel length of the shooting belt 18. The forward movement of the front roller 22 is synchronized with the belt running speed of the shooting belt 18 in such a way that the material web section 10 is transported in a controlled manner to a well-defined profile point in the lateral edge region of the shaped plate 22 and is braked to a standstill there. There is then a return movement of the front roller 24 and unwinding movement of the shooting belt 18, through which the material web section 10 comes free from the shooting belt 18 and is inserted into the shaped plate 22. The shooting belt 18 operates at a speed which is controlled in accordance with the wave profile, such that during the movement of the shooting belt 18 over the molding plate 22 a web length of the material web section 10 corresponding to the swept profile length is released from the shooting belt 18 and lies completely over the molding plate 22. The molding plate 22 is preferably stationary in this process, and the belt travel speed and / or return speed of the front roller 24 of the shooting belt 18 is controlled accordingly. In the case of a stationary shaped plate 22, a profile-dependent speed control of one of these two movement components is required. The exact alignment of the shaped plate 22 with the axial direction of the corrugation transverse to the working direction of the shooting belt 18 is essential.

Die Anlage gemäß Fig. 3 dient zur Herstellung von Wellplatten aus geschnittenen, im Grundriß rechteckigen ebenen Materialbahnabschnitten 10, die auf einem Band liegend aus einer kontinuierlich arbeitenden Plattenmaschine 12 kommen. Die Materialbahnabschnitte 10 bestehen aus einer nicht ausgehärteten zementgebundenen Masse, die mit alkaliwiderstandsfähigen Glasfasern in Form von Kurzfasern bewehrt ist. Die Masse liegt auf einer über die Fläche des Materialbahnabschnitts durchgehenden, wasserundurchlässigen Trennfolie aus Kunststoff auf. Am Ende der Plattenmaschine 12 wird der Materialbahnabschnitt 10 auf ein in gleicher Höhe und Richtung laufendes Beschleunigungsband 14 übergeben, dessen Transportgeschwindigkeit während der Übergabe der des Bands der Plattenmaschine 12 entspricht. Nach erfolgter Übergabe wird die Transportgeschwindigkeit stetig erhöht. An das Beschleunigungsband 14 schließt sich ein in gleicher Höhe und Richtung laufendes Schießband 26 an, das bei der Übergabe des Materialbahnabschnitts 10 mit einer der Endgeschwindigkeit des Beschleunigungsbands 14 entsprechenden Geschwindigkeit läuft. Das Schießband 26 legt den Materialbahnabschnitt in der zuvor beschriebenen Weise in ein Formblech 28 ein, das sich auf der dem Beschleunigungsband 14 abgewandten Seite des Schießbands 26 befindet. Die Wellung des Formblechs 28 ist quer zu der Laufrichtung von Plattenmaschine 12, Beschleunigungsband 14 und Schießband 26 orientiert.3 is used to produce corrugated sheets from cut, flat material web sections 10 which are rectangular in plan and which come from a continuously operating plate machine 12 lying on a belt. The material web sections 10 consist of a non-hardened cement-bound mass, which is reinforced with alkali-resistant glass fibers in the form of short fibers. The mass lies on a water-impermeable separating film made of plastic, which is continuous over the surface of the material web section. At the end of the plate machine 12, the material web section 10 is transferred to an acceleration belt 14 running in the same height and direction, the transport speed of which during the transfer of the belt of the plate machine 12 corresponds. After delivery, the transport speed is increased continuously. The acceleration belt 14 is followed by a shooting belt 26 running in the same height and direction, which runs when the material web section 10 is transferred at a speed corresponding to the final speed of the acceleration belt 14. The shooting belt 26 places the material web section in the manner described above in a shaped plate 28 which is located on the side of the shooting belt 26 facing away from the acceleration belt 14. The corrugation of the shaped plate 28 is oriented transversely to the running direction of the plate machine 12, the acceleration belt 14 and the shooting belt 26.

Es besteht die Möglichkeit, das zweite Schießband 16 (Fig. 1 und 2) bzw. alleinige Schießband 26 (Fig. 3) durch ein herkömmliches Förderband zu ersetzen, das an dem Ende, an dem das Einformen des Materialbahnabschnitts 10 in das Formblech 22, 28 erfolgt, eine Walzenanordnung mit stationärer Walzenachse hat. In diesem Fall muß beim Einlegen des Materialbahnabschnitts 10 eine Relativbewegung des Formblechs 22, 28 zu dieser Walzenanordnung erfolgen, und zwar mit einer profilabhängigen Steuerung der Verfahrgeschwindigkeit und/oder Bandlaufgeschwindigkeit.It is possible to replace the second shooting belt 16 (FIGS. 1 and 2) or sole shooting belt 26 (FIG. 3) with a conventional conveyor belt which, at the end at which the material web section 10 is molded into the shaped plate 22, 28 takes place, has a roller arrangement with a stationary roller axis. In this case, when the material web section 10 is inserted, the mold plate 22, 28 must move relative to this roller arrangement, with a profile-dependent control of the travel speed and / or the belt running speed.

Der Materialbahnabschnitt 10 sinkt allein aufgrund seines Eigengewichts derart in das Formblech 22, 28 ein, daß er es gänzlich ausfüllt. Erforderlichenfalls kann dieser Vorgang durch ein Rütteln oder Schocken des Formblechs 22, 28 unterstützt werden.The material web section 10 sinks into the shaped plate 22, 28 solely because of its own weight in such a way that it completely fills it. If necessary, this process can be supported by shaking or shocking the shaped plate 22, 28.

Liste der BezugszeichenList of reference numbers

1010th
MaterialbahnabschnittMaterial web section
1212
PlattenmaschinePlate machine
1414
BeschleunigungsbandAcceleration band
1616
erstes Schießbandfirst shooting line
1818th
zweites Schießbandsecond shooting belt
2020th
FormstationForming station
2222
FormblechShaped sheet
2424th
FrontrolleFront role
2626
SchießbandShooting range
2828
FormblechShaped sheet

Claims (15)

Vorrichtung zur Herstellung von profilierten Formkörpern, insbesondere Wellplatten, durch maschinelles Formen eines Materialbahnabschnitts aus einer formbaren aushärtenden Masse mit einem Bett, das eine ein Negativ des Profils bildende Schalungsfläche hat, und mit einem Bandförderer oder ähnlichem, der den Materialbahnabschnitt dem Bett zum Einformen darin übergibt, dadurch gekennzeichnet, daß das Band des Bandförderers in Querrichtung des Profils läuft, und daß das Bett der Profilierung folgend mit dem Materialbahnabschnitt (10) belegbar ist, wozu eine relative Querbewegung von Bandförderer und Bett und/oder die Bandlaufgeschwindigkeit des Bandförderers der Abwicklung des Profils entsprechend steuerbar sind.Apparatus for the production of profiled shaped bodies, in particular corrugated sheets, by machine molding a material web section from a moldable hardening mass with a bed which has a formwork surface which forms a negative of the profile, and with a belt conveyor or the like which transfers the material web section to the bed for molding therein , characterized in that the belt of the belt conveyor runs in the transverse direction of the profile, and that the bed can be covered with the material web section (10) following the profiling is what a relative transverse movement of the belt conveyor and bed and / or the belt running speed of the belt conveyor can be controlled in accordance with the processing of the profile. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Bandförderer ein in Querrichtung des Formkörpers mit profilabhängig gesteuerter Geschwindigkeit arbeitendes Schießband (zweites Schießband 18; 26) ist.Apparatus according to claim 1, characterized in that the belt conveyor is a shooting belt (second shooting belt 18; 26) which operates in the transverse direction of the shaped body at a speed which is controlled as a function of the profile. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Bandlaufgeschwindigkeit des Schießbands (zweites Schießband 18; 26) profilabhängig steuerbar ist.Apparatus according to claim 1 or 2, characterized in that the belt running speed of the shooting belt (second shooting belt 18; 26) can be controlled depending on the profile. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Vor- bzw. Rücklaufgeschwindigkeit der Walzenanordnung des Schießbands (zweites Schießband 18; 26) profilabhängig steuerbar ist.Device according to one of claims 1 to 3, characterized in that the forward or reverse speed of the roller arrangement of the shooting belt (second shooting belt 18; 26) can be controlled depending on the profile. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Bett beim Einlegen stationär ist.Device according to one of claims 1 to 4, characterized in that the bed is stationary when inserted. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Bandförderer an dem Ende, an dem das Einlegen des Materialbahnabschnitts (10) in das Bett erfolgt, eine Walzenanordnung mit stationärer Walzenachse hat, und daß das Bett relativ zum Bandförderer in Querrichtung des Formkörpers verfahrbar ist.Device according to claim 1, characterized in that the belt conveyor at the end at which the insertion of the material web section (10) into the bed, has a roller arrangement with a stationary roller axis, and that the bed can be moved relative to the belt conveyor in the transverse direction of the shaped body. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Bandlaufgeschwindigkeit des Bandförderers profilabhängig steuerbar ist.Apparatus according to claim 6, characterized in that the belt running speed of the belt conveyor can be controlled depending on the profile. Vorrichunng nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Verfahrgeschwindigkeit des Betts profilabhängig steuerbar ist.Device according to claim 6 or 7, characterized in that the travel speed of the bed can be controlled depending on the profile. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß dem Bandförderer ein Schießband (erstes Schießband 16) zugeordnet ist, dem Materialbahnabschnitte (10) aus einer kontinuierlich arbeitenden Plattenmaschine (12) mittels eines Beschleunigungsbands (14) überstellt werden, mit dem das Schießband (erstes Schießband 16) während der Übergabe eines Materialbahnabschnitts (10) in gleicher Richtung synchron läuft, daß die Bandlaufrichtung des Bandförderers senkrecht zu der des Schießbands (erstes Schießband 16) orientiert ist, und daß sich das Band des Bandförderers während der Übergabe des Materialbahnabschnitts (10) von dem Schießband (erstes Schießband 16) in Ruhe befindet (Fig. 1 und 2).Device according to one of claims 1 to 8, characterized in that the conveyor belt is assigned a shooting belt (first shooting belt 16) to which material web sections (10) are transferred from a continuously operating plate machine (12) by means of an acceleration belt (14) with which the The shooting belt (first shooting belt 16) runs synchronously in the same direction during the transfer of a material web section (10), that the belt running direction of the belt conveyor is oriented perpendicular to that of the shooting belt (first shooting belt 16), and that the belt of the belt conveyor is oriented during the transfer of the material web section (10) of that Shooting range (first shooting range 16) is at rest (Fig. 1 and 2). Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß dem Bandförderer Materialbahnabschnitte (10) aus einer kontinuierlich arbeitenden Plattenmaschine (12) mittels eines Beschleunigungsbands (14) überstellt werden, mit dem der Bandförderer während der Übergabe eines Materialbahnabschnitts (10) in gleicher Richtung synchron läuft (Fig. 3).Device according to one of claims 1 to 8, characterized in that material web sections (10) are transferred to the belt conveyor from a continuously operating plate machine (12) by means of an acceleration belt (14) with which the belt conveyor is in the same during the transfer of a material web section (10) Direction runs synchronously (Fig. 3). Vorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß sie eine Einrichtung zum Rütteln und/oder Schocken des Betts während des Einlegens des Materialbahnabschnitts (10) darin aufweist.Device according to one of claims 1 to 10, characterized in that it has a device for shaking and / or shocking the bed while the material web section (10) is inserted therein. Verfahren zur Herstellung von profilierten Formkörpern, insbesondere Wellplatten, durch maschinelles Einformen eines Materialbahnabschnitts aus einer formbaren aushärtenden Masse in ein Bett, das eine ein Negativ des Profils bildende Schalungsfläche hat, dadurch gekennzeichnet, daß der Materialbahnabschnitt (10) in Querrichtung des Profils fortschreitend und der Profilierung folgend mit einer Bahnlänge in das Bett eingelegt wird, die der Abwicklung des Profils entspricht.A process for the production of profiled moldings, in particular corrugated sheets, by machine molding a material web section from a moldable hardening mass into a bed which has a formwork surface forming a negative of the profile, characterized in that the material web section (10) progresses in the transverse direction of the profile and the The profiling is then inserted into the bed with a length of web that corresponds to the processing of the profile. Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß ein Materialbahnabschnitt (10) aus einer auf einer Trennfolie aufliegenden, nicht ausgehärteten faserbewehrten hydraulisch abbindenden Masse in das Bett eingelegt wird.A method according to claim 12, characterized in that a material web section (10) made of a non-hardened, fiber-reinforced, hydraulically setting mass resting on a separating film is placed in the bed. Verfahren nach Anspruch 12 oder 13, dadurch gekennzeichnet, daß ein mit Glasfasern in Form von in Profillängsrichtung durchgehenden Faserbündeln und/oder Kurzfasern bewehrter Materialbahnabschnitt (10) in das Bett eingelegt wird.Method according to claim 12 or 13, characterized in that a material web section (10) reinforced with glass fibers in the form of fiber bundles and / or short fibers continuous in the longitudinal direction of the profile is inserted into the bed. Verfahren nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, daß das Bett beim Einlegen des Materialbahnabschnitts (10) gerüttelt und/oder geschockt wird.Method according to one of claims 12 to 14, characterized in that the bed is shaken and / or shocked when the material web section (10) is inserted.
EP92107706A 1991-01-04 1992-05-07 Process and apparatus for making profiled products by controlling the speed during depositing a sheet of material on a former Withdrawn EP0568718A1 (en)

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DE4100072A1 (en) * 1991-01-04 1992-07-09 Schmidt & Heinzmann Gmbh & Co DEVICE AND METHOD FOR PRODUCING PROFILED MOLDED BODIES BY SPEED-CONTROLLED INSERTING A MATERIAL SECTION INTO A BED

Citations (6)

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Publication number Priority date Publication date Assignee Title
GB621135A (en) * 1945-06-08 1949-04-05 Turners Asbestos Cement Co Improvements in plants for the treatment of asbestos-cement or like sheets in the plastic state
US2586481A (en) * 1945-06-08 1952-02-19 Turners Asbestos Cement Co Method of and apparatus for corrugating asbestos-cement sheets
FR1076660A (en) * 1952-05-15 1954-10-28 Filtrox Werk Ag Method and device for the production of plate products from a mixture of fibrous materials and a hydraulic binder
GB825723A (en) * 1956-08-18 1959-12-23 Cie De Pont A Mousson Improved machine for the manufacture of corrugated plates of asbestos-cement and similar products
EP0459270A2 (en) * 1990-05-31 1991-12-04 Heidelberger Zement AG Process and apparatus for making in particular corrugated fibrous concrete products
DE4100072A1 (en) * 1991-01-04 1992-07-09 Schmidt & Heinzmann Gmbh & Co DEVICE AND METHOD FOR PRODUCING PROFILED MOLDED BODIES BY SPEED-CONTROLLED INSERTING A MATERIAL SECTION INTO A BED

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GB621135A (en) * 1945-06-08 1949-04-05 Turners Asbestos Cement Co Improvements in plants for the treatment of asbestos-cement or like sheets in the plastic state
US2586481A (en) * 1945-06-08 1952-02-19 Turners Asbestos Cement Co Method of and apparatus for corrugating asbestos-cement sheets
FR1076660A (en) * 1952-05-15 1954-10-28 Filtrox Werk Ag Method and device for the production of plate products from a mixture of fibrous materials and a hydraulic binder
GB825723A (en) * 1956-08-18 1959-12-23 Cie De Pont A Mousson Improved machine for the manufacture of corrugated plates of asbestos-cement and similar products
EP0459270A2 (en) * 1990-05-31 1991-12-04 Heidelberger Zement AG Process and apparatus for making in particular corrugated fibrous concrete products
DE4100072A1 (en) * 1991-01-04 1992-07-09 Schmidt & Heinzmann Gmbh & Co DEVICE AND METHOD FOR PRODUCING PROFILED MOLDED BODIES BY SPEED-CONTROLLED INSERTING A MATERIAL SECTION INTO A BED

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